/*
- * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2020 Apple Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
- *
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
- *
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ *
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
/*
* FreeBSD-Id: nfs_serv.c,v 1.52 1997/10/28 15:59:05 bde Exp $
*/
-/*
- * nfs version 2 and 3 server calls to vnode ops
- * - these routines generally have 3 phases
- * 1 - break down and validate rpc request in mbuf list
- * 2 - do the vnode ops for the request
- * (surprisingly ?? many are very similar to syscalls in vfs_syscalls.c)
- * 3 - build the rpc reply in an mbuf list
- * nb:
- * - do not mix the phases, since the nfsm_?? macros can return failures
- * on a bad rpc or similar and do not do any vrele() or vput()'s
- *
- * - the nfsm_reply() macro generates an nfs rpc reply with the nfs
- * error number iff error != 0 whereas
- * returning an error from the server function implies a fatal error
- * such as a badly constructed rpc request that should be dropped without
- * a reply.
- * For Version 3, nfsm_reply() does not return for the error case, since
- * most version 3 rpcs return more than the status for error cases.
- */
+#include <nfs/nfs_conf.h>
+#if CONFIG_NFS_SERVER
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
-#include <sys/namei.h>
+#include <sys/kauth.h>
#include <sys/unistd.h>
#include <sys/malloc.h>
#include <sys/vnode.h>
-#include <sys/mount.h>
+#include <sys/mount_internal.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
-#include <sys/mbuf.h>
+#include <sys/kpi_mbuf.h>
#include <sys/dirent.h>
#include <sys/stat.h>
#include <sys/kernel.h>
-#include <sys/sysctl.h>
#include <sys/ubc.h>
+#include <sys/vnode_internal.h>
+#include <sys/uio_internal.h>
+#include <libkern/OSAtomic.h>
+#include <sys/fsevents.h>
+#include <kern/thread_call.h>
+#include <sys/time.h>
#include <sys/vm.h>
#include <sys/vmparam.h>
-#include <machine/spl.h>
+
+#include <sys/fcntl.h>
+
+#include <netinet/in.h>
#include <nfs/nfsproto.h>
#include <nfs/rpcv2.h>
#include <nfs/nfs.h>
#include <nfs/xdr_subs.h>
#include <nfs/nfsm_subs.h>
-#include <nfs/nqnfs.h>
-
-nfstype nfsv3_type[9] = { NFNON, NFREG, NFDIR, NFBLK, NFCHR, NFLNK, NFSOCK,
- NFFIFO, NFNON };
-#ifndef NFS_NOSERVER
-nfstype nfsv2_type[9] = { NFNON, NFREG, NFDIR, NFBLK, NFCHR, NFLNK, NFNON,
- NFCHR, NFNON };
-/* Global vars */
-extern u_long nfs_xdrneg1;
-extern u_long nfs_false, nfs_true;
-extern enum vtype nv3tov_type[8];
-extern struct nfsstats nfsstats;
-
-int nfsrvw_procrastinate = NFS_GATHERDELAY * 1000;
-int nfsrvw_procrastinate_v3 = 0;
-
-int nfs_async = 0;
-#ifdef notyet
-/* XXX CSM 11/25/97 Upgrade sysctl.h someday */
-SYSCTL_INT(_vfs_nfs, OID_AUTO, async, CTLFLAG_RW, &nfs_async, 0, "");
+#include <nfs/nfsrvcache.h>
+#include <nfs/nfs_gss.h>
+
+#if CONFIG_MACF
+#include <security/mac.h>
+#include <security/mac_framework.h>
+#endif
+
+/*
+ * NFS server globals
+ */
+
+int nfsd_thread_count = 0;
+int nfsd_thread_max = 0;
+static LCK_GRP_DECLARE(nfsd_lck_grp, "nfsd");
+LCK_MTX_DECLARE(nfsd_mutex, &nfsd_lck_grp);
+struct nfsd_head nfsd_head, nfsd_queue;
+
+LCK_GRP_DECLARE(nfsrv_slp_rwlock_group, "nfsrv-slp-rwlock");
+LCK_GRP_DECLARE(nfsrv_slp_mutex_group, "nfsrv-slp-mutex");
+struct nfsrv_sockhead nfsrv_socklist, nfsrv_sockwg,
+ nfsrv_sockwait, nfsrv_sockwork;
+struct nfsrv_sock *nfsrv_udpsock = NULL;
+struct nfsrv_sock *nfsrv_udp6sock = NULL;
+
+/* NFS exports */
+struct nfsrv_expfs_list nfsrv_exports;
+struct nfsrv_export_hashhead *nfsrv_export_hashtbl = NULL;
+int nfsrv_export_hash_size = NFSRVEXPHASHSZ;
+u_long nfsrv_export_hash;
+static LCK_GRP_DECLARE(nfsrv_export_rwlock_group, "nfsrv-export-rwlock");
+LCK_RW_DECLARE(nfsrv_export_rwlock, &nfsrv_export_rwlock_group);
+
+#if CONFIG_FSE
+/* NFS server file modification event generator */
+struct nfsrv_fmod_hashhead *nfsrv_fmod_hashtbl;
+u_long nfsrv_fmod_hash;
+static LCK_GRP_DECLARE(nfsrv_fmod_grp, "nfsrv_fmod");
+LCK_MTX_DECLARE(nfsrv_fmod_mutex, &nfsrv_fmod_grp);
+static int nfsrv_fmod_timer_on = 0;
+int nfsrv_fsevents_enabled = 1;
+#endif
+
+/* NFS server timers */
+#if CONFIG_FSE
+thread_call_t nfsrv_fmod_timer_call;
#endif
+thread_call_t nfsrv_idlesock_timer_call;
+thread_call_t nfsrv_wg_timer_call;
+int nfsrv_wg_timer_on;
+
+/* globals for the active user list */
+uint32_t nfsrv_user_stat_enabled = 1;
+uint32_t nfsrv_user_stat_node_count = 0;
+uint32_t nfsrv_user_stat_max_idle_sec = NFSRV_USER_STAT_DEF_IDLE_SEC;
+uint32_t nfsrv_user_stat_max_nodes = NFSRV_USER_STAT_DEF_MAX_NODES;
+LCK_GRP_DECLARE(nfsrv_active_user_mutex_group, "nfs-active-user-mutex");
+
+int nfsrv_wg_delay = NFSRV_WGATHERDELAY * 1000;
+int nfsrv_wg_delay_v3 = 0;
+
+int nfsrv_async = 0;
+
+int nfsrv_authorize(vnode_t, vnode_t, kauth_action_t, vfs_context_t, struct nfs_export_options*, int);
+int nfsrv_wg_coalesce(struct nfsrv_descript *, struct nfsrv_descript *);
+void nfsrv_modified(vnode_t, vfs_context_t);
-static int nfsrv_access __P((struct vnode *,int,struct ucred *,int,
- struct proc *, int));
-static void nfsrvw_coalesce __P((struct nfsrv_descript *,
- struct nfsrv_descript *));
+extern void IOSleep(int);
+extern int safe_getpath(struct vnode *dvp, char *leafname, char *path, int _len, int *truncated_path);
/*
- * nfs v3 access service
+ * Initialize the data structures for the server.
*/
+
+#define NFSRV_NOT_INITIALIZED 0
+#define NFSRV_INITIALIZING 1
+#define NFSRV_INITIALIZED 2
+static volatile UInt32 nfsrv_initted = NFSRV_NOT_INITIALIZED;
+
int
-nfsrv3_access(nfsd, slp, procp, mrq)
- struct nfsrv_descript *nfsd;
- struct nfssvc_sock *slp;
- struct proc *procp;
- struct mbuf **mrq;
+nfsrv_is_initialized(void)
+{
+ return nfsrv_initted == NFSRV_INITIALIZED;
+}
+
+void
+nfsrv_init(void)
{
- struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
- struct mbuf *nam = nfsd->nd_nam;
- caddr_t dpos = nfsd->nd_dpos;
- struct ucred *cred = &nfsd->nd_cr;
- struct vnode *vp;
- nfsfh_t nfh;
- fhandle_t *fhp;
- register u_long *tl;
- register long t1;
- caddr_t bpos;
- int error = 0, rdonly, cache, getret;
- char *cp2;
- struct mbuf *mb, *mreq, *mb2;
- struct vattr vattr, *vap = &vattr;
- u_long testmode, nfsmode;
- u_quad_t frev;
-
-#ifndef nolint
- cache = 0;
+ /* make sure we init only once */
+ if (!OSCompareAndSwap(NFSRV_NOT_INITIALIZED, NFSRV_INITIALIZING, &nfsrv_initted)) {
+ /* wait until initialization is complete */
+ while (!nfsrv_is_initialized()) {
+ IOSleep(500);
+ }
+ return;
+ }
+
+ if (sizeof(struct nfsrv_sock) > NFS_SVCALLOC) {
+ printf("struct nfsrv_sock bloated (> %dbytes)\n", NFS_SVCALLOC);
+ }
+
+ /* init export data structures */
+ LIST_INIT(&nfsrv_exports);
+
+#if CONFIG_FSE
+ /* init NFS server file modified event generation */
+ nfsrv_fmod_hashtbl = hashinit(NFSRVFMODHASHSZ, M_TEMP, &nfsrv_fmod_hash);
+#endif
+
+ /* initialize NFS server timer callouts */
+#if CONFIG_FSE
+ nfsrv_fmod_timer_call = thread_call_allocate(nfsrv_fmod_timer, NULL);
#endif
- fhp = &nfh.fh_generic;
- nfsm_srvmtofh(fhp);
- nfsm_dissect(tl, u_long *, NFSX_UNSIGNED);
- if ((error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
- &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE))) {
- nfsm_reply(NFSX_UNSIGNED);
- nfsm_srvpostop_attr(1, (struct vattr *)0);
- return (0);
- }
- nfsmode = fxdr_unsigned(u_long, *tl);
- if ((nfsmode & NFSV3ACCESS_READ) &&
- nfsrv_access(vp, VREAD, cred, rdonly, procp, 0))
- nfsmode &= ~NFSV3ACCESS_READ;
- if (vp->v_type == VDIR)
- testmode = (NFSV3ACCESS_MODIFY | NFSV3ACCESS_EXTEND |
- NFSV3ACCESS_DELETE);
- else
- testmode = (NFSV3ACCESS_MODIFY | NFSV3ACCESS_EXTEND);
- if ((nfsmode & testmode) &&
- nfsrv_access(vp, VWRITE, cred, rdonly, procp, 0))
- nfsmode &= ~testmode;
- if (vp->v_type == VDIR)
- testmode = NFSV3ACCESS_LOOKUP;
- else
- testmode = NFSV3ACCESS_EXECUTE;
- if ((nfsmode & testmode) &&
- nfsrv_access(vp, VEXEC, cred, rdonly, procp, 0))
- nfsmode &= ~testmode;
- getret = VOP_GETATTR(vp, vap, cred, procp);
- vput(vp);
- nfsm_reply(NFSX_POSTOPATTR(1) + NFSX_UNSIGNED);
- nfsm_srvpostop_attr(getret, vap);
- nfsm_build(tl, u_long *, NFSX_UNSIGNED);
- *tl = txdr_unsigned(nfsmode);
- nfsm_srvdone;
+ nfsrv_idlesock_timer_call = thread_call_allocate(nfsrv_idlesock_timer, NULL);
+ nfsrv_wg_timer_call = thread_call_allocate(nfsrv_wg_timer, NULL);
+
+ /* Init server data structures */
+ TAILQ_INIT(&nfsrv_socklist);
+ TAILQ_INIT(&nfsrv_sockwait);
+ TAILQ_INIT(&nfsrv_sockwork);
+ TAILQ_INIT(&nfsrv_sockwg);
+ TAILQ_INIT(&nfsd_head);
+ TAILQ_INIT(&nfsd_queue);
+ nfsrv_udpsock = NULL;
+ nfsrv_udp6sock = NULL;
+
+ /* Setup the up-call handling */
+ nfsrv_uc_init();
+
+ /* initialization complete */
+ nfsrv_initted = NFSRV_INITIALIZED;
+}
+
+
+/*
+ *
+ * NFS version 2 and 3 server request processing functions
+ *
+ * These functions take the following parameters:
+ *
+ * struct nfsrv_descript *nd - the NFS request descriptor
+ * struct nfsrv_sock *slp - the NFS socket the request came in on
+ * vfs_context_t ctx - VFS context
+ * mbuf_t *mrepp - pointer to hold the reply mbuf list
+ *
+ * These routines generally have 3 phases:
+ *
+ * 1 - break down and validate the RPC request in the mbuf chain
+ * provided in nd->nd_nmreq.
+ * 2 - perform the vnode operations for the request
+ * (many are very similar to syscalls in vfs_syscalls.c and
+ * should therefore be kept in sync with those implementations)
+ * 3 - build the RPC reply in an mbuf chain (nmrep) and return the mbuf chain
+ *
+ */
+
+/*
+ * nfs v3 access service
+ */
+int
+nfsrv_access(
+ struct nfsrv_descript *nd,
+ struct nfsrv_sock *slp,
+ vfs_context_t ctx,
+ mbuf_t *mrepp)
+{
+ struct nfsm_chain *nmreq, nmrep;
+ vnode_t vp;
+ int error, attrerr;
+ struct vnode_attr vattr;
+ struct nfs_filehandle nfh;
+ u_int32_t nfsmode;
+ kauth_action_t testaction;
+ struct nfs_export *nx;
+ struct nfs_export_options *nxo;
+
+ error = 0;
+ attrerr = ENOENT;
+ nfsmode = 0;
+ nmreq = &nd->nd_nmreq;
+ nfsm_chain_null(&nmrep);
+ *mrepp = NULL;
+ vp = NULL;
+
+ nfsm_chain_get_fh_ptr(error, nmreq, NFS_VER3, nfh.nfh_fhp, nfh.nfh_len);
+ nfsm_chain_get_32(error, nmreq, nfsmode);
+ nfsmerr_if(error);
+ error = nfsrv_fhtovp(&nfh, nd, &vp, &nx, &nxo);
+ nfsmerr_if(error);
+
+ /* update export stats */
+ NFSStatAdd64(&nx->nx_stats.ops, 1);
+
+ /* update active user stats */
+ nfsrv_update_user_stat(nx, nd, kauth_cred_getuid(nd->nd_cr), 1, 0, 0);
+
+ error = nfsrv_credcheck(nd, ctx, nx, nxo);
+ nfsmerr_if(error);
+
+ /*
+ * Each NFS mode bit is tested separately.
+ *
+ * XXX this code is nominally correct, but returns a pessimistic
+ * rather than optimistic result. It will be necessary to add
+ * an NFS-specific interface to the vnode_authorize code to
+ * obtain good performance in the optimistic mode.
+ */
+ if (nfsmode & NFS_ACCESS_READ) {
+ testaction = vnode_isdir(vp) ? KAUTH_VNODE_LIST_DIRECTORY : KAUTH_VNODE_READ_DATA;
+ if (nfsrv_authorize(vp, NULL, testaction, ctx, nxo, 0)) {
+ nfsmode &= ~NFS_ACCESS_READ;
+ }
+ }
+ if ((nfsmode & NFS_ACCESS_LOOKUP) &&
+ (!vnode_isdir(vp) ||
+ nfsrv_authorize(vp, NULL, KAUTH_VNODE_SEARCH, ctx, nxo, 0))) {
+ nfsmode &= ~NFS_ACCESS_LOOKUP;
+ }
+ if (nfsmode & NFS_ACCESS_MODIFY) {
+ if (vnode_isdir(vp)) {
+ testaction =
+ KAUTH_VNODE_ADD_FILE |
+ KAUTH_VNODE_ADD_SUBDIRECTORY |
+ KAUTH_VNODE_DELETE_CHILD;
+ } else {
+ testaction =
+ KAUTH_VNODE_WRITE_DATA;
+ }
+ if (nfsrv_authorize(vp, NULL, testaction, ctx, nxo, 0)) {
+ nfsmode &= ~NFS_ACCESS_MODIFY;
+ }
+ }
+ if (nfsmode & NFS_ACCESS_EXTEND) {
+ if (vnode_isdir(vp)) {
+ testaction =
+ KAUTH_VNODE_ADD_FILE |
+ KAUTH_VNODE_ADD_SUBDIRECTORY;
+ } else {
+ testaction =
+ KAUTH_VNODE_WRITE_DATA |
+ KAUTH_VNODE_APPEND_DATA;
+ }
+ if (nfsrv_authorize(vp, NULL, testaction, ctx, nxo, 0)) {
+ nfsmode &= ~NFS_ACCESS_EXTEND;
+ }
+ }
+
+ /*
+ * Note concerning NFS_ACCESS_DELETE:
+ * For hard links, the answer may be wrong if the vnode
+ * has multiple parents with different permissions.
+ * Also, some clients (e.g. MacOSX 10.3) may incorrectly
+ * interpret the missing/cleared DELETE bit.
+ * So we'll just leave the DELETE bit alone. At worst,
+ * we're telling the client it might be able to do
+ * something it really can't.
+ */
+
+ if ((nfsmode & NFS_ACCESS_EXECUTE) &&
+ (vnode_isdir(vp) ||
+ nfsrv_authorize(vp, NULL, KAUTH_VNODE_EXECUTE, ctx, nxo, 0))) {
+ nfsmode &= ~NFS_ACCESS_EXECUTE;
+ }
+
+ /* get postop attributes */
+ nfsm_srv_vattr_init(&vattr, NFS_VER3);
+ attrerr = vnode_getattr(vp, &vattr, ctx);
+
+nfsmerr:
+ /* assemble reply */
+ nd->nd_repstat = error;
+ error = nfsrv_rephead(nd, slp, &nmrep, NFSX_POSTOPATTR(NFS_VER3) + NFSX_UNSIGNED);
+ nfsmout_if(error);
+ *mrepp = nmrep.nmc_mhead;
+ nfsmout_on_status(nd, error);
+ nfsm_chain_add_postop_attr(error, nd, &nmrep, attrerr, &vattr);
+ if (!nd->nd_repstat) {
+ nfsm_chain_add_32(error, &nmrep, nfsmode);
+ }
+nfsmout:
+ nfsm_chain_build_done(error, &nmrep);
+ if (vp) {
+ vnode_put(vp);
+ }
+ if (error) {
+ nfsm_chain_cleanup(&nmrep);
+ *mrepp = NULL;
+ }
+ return error;
}
/*
* nfs getattr service
*/
int
-nfsrv_getattr(nfsd, slp, procp, mrq)
- struct nfsrv_descript *nfsd;
- struct nfssvc_sock *slp;
- struct proc *procp;
- struct mbuf **mrq;
+nfsrv_getattr(
+ struct nfsrv_descript *nd,
+ struct nfsrv_sock *slp,
+ vfs_context_t ctx,
+ mbuf_t *mrepp)
{
- struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
- struct mbuf *nam = nfsd->nd_nam;
- caddr_t dpos = nfsd->nd_dpos;
- struct ucred *cred = &nfsd->nd_cr;
- register struct nfs_fattr *fp;
- struct vattr va;
- register struct vattr *vap = &va;
- struct vnode *vp;
- nfsfh_t nfh;
- fhandle_t *fhp;
- register u_long *tl;
- register long t1;
- caddr_t bpos;
- int error = 0, rdonly, cache;
- char *cp2;
- struct mbuf *mb, *mb2, *mreq;
- u_quad_t frev;
-
- fhp = &nfh.fh_generic;
- nfsm_srvmtofh(fhp);
- if ((error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
- &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE))) {
- nfsm_reply(0);
- return (0);
- }
- nqsrv_getl(vp, ND_READ);
- error = VOP_GETATTR(vp, vap, cred, procp);
- vput(vp);
- nfsm_reply(NFSX_FATTR(nfsd->nd_flag & ND_NFSV3));
- if (error)
- return (0);
- nfsm_build(fp, struct nfs_fattr *, NFSX_FATTR(nfsd->nd_flag & ND_NFSV3));
- nfsm_srvfillattr(vap, fp);
- nfsm_srvdone;
+ struct nfsm_chain *nmreq, nmrep;
+ struct vnode_attr vattr;
+ vnode_t vp;
+ int error;
+ struct nfs_filehandle nfh;
+ struct nfs_export *nx;
+ struct nfs_export_options *nxo;
+
+ error = 0;
+ nmreq = &nd->nd_nmreq;
+ nfsm_chain_null(&nmrep);
+ *mrepp = NULL;
+ vp = NULL;
+
+ nfsm_chain_get_fh_ptr(error, nmreq, nd->nd_vers, nfh.nfh_fhp, nfh.nfh_len);
+ nfsmerr_if(error);
+ error = nfsrv_fhtovp(&nfh, nd, &vp, &nx, &nxo);
+ nfsmerr_if(error);
+
+ /* update export stats */
+ NFSStatAdd64(&nx->nx_stats.ops, 1);
+
+ /* update active user stats */
+ nfsrv_update_user_stat(nx, nd, kauth_cred_getuid(nd->nd_cr), 1, 0, 0);
+
+ error = nfsrv_credcheck(nd, ctx, nx, nxo);
+ nfsmerr_if(error);
+
+#if CONFIG_MACF
+ if (mac_vnode_check_open(ctx, vp, FREAD)) {
+ error = ESTALE;
+ }
+ nfsmerr_if(error);
+#endif
+
+ nfsm_srv_vattr_init(&vattr, nd->nd_vers);
+ error = vnode_getattr(vp, &vattr, ctx);
+
+#if CONFIG_MACF
+ /* XXXab: Comment in the VFS code makes it sound like
+ * some arguments can be filtered out, but not
+ * what it actually means. Hopefully not like
+ * they gonna set mtime to 0 or something. For
+ * now trust there are no shenanigans here.
+ */
+ error = mac_vnode_check_getattr(ctx, NOCRED, vp, &vattr);
+ nfsmerr_if(error);
+#endif
+
+ vnode_put(vp);
+ vp = NULL;
+
+nfsmerr:
+ /* assemble reply */
+ nd->nd_repstat = error;
+ error = nfsrv_rephead(nd, slp, &nmrep, NFSX_FATTR(nd->nd_vers));
+ nfsmout_if(error);
+ *mrepp = nmrep.nmc_mhead;
+ nfsmout_if(nd->nd_repstat);
+ error = nfsm_chain_add_fattr(nd, &nmrep, &vattr);
+nfsmout:
+ nfsm_chain_build_done(error, &nmrep);
+ if (vp) {
+ vnode_put(vp);
+ }
+ if (error) {
+ nfsm_chain_cleanup(&nmrep);
+ *mrepp = NULL;
+ }
+ return error;
}
/*
* nfs setattr service
*/
int
-nfsrv_setattr(nfsd, slp, procp, mrq)
- struct nfsrv_descript *nfsd;
- struct nfssvc_sock *slp;
- struct proc *procp;
- struct mbuf **mrq;
+nfsrv_setattr(
+ struct nfsrv_descript *nd,
+ struct nfsrv_sock *slp,
+ vfs_context_t ctx,
+ mbuf_t *mrepp)
{
- struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
- struct mbuf *nam = nfsd->nd_nam;
- caddr_t dpos = nfsd->nd_dpos;
- struct ucred *cred = &nfsd->nd_cr;
- struct vattr va, preat;
- register struct vattr *vap = &va;
- register struct nfsv2_sattr *sp;
- register struct nfs_fattr *fp;
- struct vnode *vp;
- nfsfh_t nfh;
- fhandle_t *fhp;
- register u_long *tl;
- register long t1;
- caddr_t bpos;
- int error = 0, rdonly, cache, preat_ret = 1, postat_ret = 1;
- int v3 = (nfsd->nd_flag & ND_NFSV3), gcheck = 0;
- char *cp2;
- struct mbuf *mb, *mb2, *mreq;
- u_quad_t frev;
- struct timespec guard;
-
- fhp = &nfh.fh_generic;
- nfsm_srvmtofh(fhp);
- VATTR_NULL(vap);
- if (v3) {
- nfsm_srvsattr(vap);
- nfsm_dissect(tl, u_long *, NFSX_UNSIGNED);
- gcheck = fxdr_unsigned(int, *tl);
+ struct nfsm_chain *nmreq, nmrep;
+ struct vnode_attr preattr, postattr;
+ struct vnode_attr vattr, *vap = &vattr;
+ vnode_t vp;
+ struct nfs_export *nx;
+ struct nfs_export_options *nxo;
+ int error, preattrerr, postattrerr, gcheck;
+ struct nfs_filehandle nfh;
+ struct timespec guard = { .tv_sec = 0, .tv_nsec = 0 };
+ kauth_action_t action;
+ uid_t saved_uid;
+
+ error = 0;
+ preattrerr = postattrerr = ENOENT;
+ gcheck = 0;
+ nmreq = &nd->nd_nmreq;
+ nfsm_chain_null(&nmrep);
+ *mrepp = NULL;
+ vp = NULL;
+
+ nfsm_chain_get_fh_ptr(error, nmreq, nd->nd_vers, nfh.nfh_fhp, nfh.nfh_len);
+ nfsmerr_if(error);
+
+ VATTR_INIT(vap);
+ error = nfsm_chain_get_sattr(nd, nmreq, vap);
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_chain_get_32(error, nmreq, gcheck);
if (gcheck) {
- nfsm_dissect(tl, u_long *, 2 * NFSX_UNSIGNED);
- fxdr_nfsv3time(tl, &guard);
+ nfsm_chain_get_time(error, nmreq, nd->nd_vers, guard.tv_sec, guard.tv_nsec);
}
- } else {
- nfsm_dissect(sp, struct nfsv2_sattr *, NFSX_V2SATTR);
- /*
- * Nah nah nah nah na nah
- * There is a bug in the Sun client that puts 0xffff in the mode
- * field of sattr when it should put in 0xffffffff. The u_short
- * doesn't sign extend.
- * --> check the low order 2 bytes for 0xffff
- */
- if ((fxdr_unsigned(int, sp->sa_mode) & 0xffff) != 0xffff)
- vap->va_mode = nfstov_mode(sp->sa_mode);
- if (sp->sa_uid != nfs_xdrneg1)
- vap->va_uid = fxdr_unsigned(uid_t, sp->sa_uid);
- if (sp->sa_gid != nfs_xdrneg1)
- vap->va_gid = fxdr_unsigned(gid_t, sp->sa_gid);
- if (sp->sa_size != nfs_xdrneg1)
- vap->va_size = fxdr_unsigned(u_quad_t, sp->sa_size);
- if (sp->sa_atime.nfsv2_sec != nfs_xdrneg1) {
-#ifdef notyet
- fxdr_nfsv2time(&sp->sa_atime, &vap->va_atime);
-#else
- vap->va_atime.tv_sec =
- fxdr_unsigned(long, sp->sa_atime.nfsv2_sec);
- vap->va_atime.tv_nsec = 0;
-#endif
- }
- if (sp->sa_mtime.nfsv2_sec != nfs_xdrneg1)
- fxdr_nfsv2time(&sp->sa_mtime, &vap->va_mtime);
-
}
+ nfsmerr_if(error);
+
+ /*
+ * Save the original credential UID in case they are
+ * mapped and we need to map the IDs in the attributes.
+ */
+ saved_uid = kauth_cred_getuid(nd->nd_cr);
/*
* Now that we have all the fields, lets do it.
*/
- if ((error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
- &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE))) {
- nfsm_reply(2 * NFSX_UNSIGNED);
- nfsm_srvwcc_data(preat_ret, &preat, postat_ret, vap);
- return (0);
- }
- nqsrv_getl(vp, ND_WRITE);
- if (v3) {
- error = preat_ret = VOP_GETATTR(vp, &preat, cred, procp);
- if (!error && gcheck &&
- (preat.va_ctime.tv_sec != guard.tv_sec ||
- preat.va_ctime.tv_nsec != guard.tv_nsec))
+ error = nfsrv_fhtovp(&nfh, nd, &vp, &nx, &nxo);
+ nfsmerr_if(error);
+
+ /* update export stats */
+ NFSStatAdd64(&nx->nx_stats.ops, 1);
+
+ /* update active user stats */
+ nfsrv_update_user_stat(nx, nd, saved_uid, 1, 0, 0);
+
+ error = nfsrv_credcheck(nd, ctx, nx, nxo);
+ nfsmerr_if(error);
+
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_srv_pre_vattr_init(&preattr);
+ error = preattrerr = vnode_getattr(vp, &preattr, ctx);
+ if (!error && gcheck && VATTR_IS_SUPPORTED(&preattr, va_change_time) &&
+ (preattr.va_change_time.tv_sec != guard.tv_sec ||
+ preattr.va_change_time.tv_nsec != guard.tv_nsec)) {
error = NFSERR_NOT_SYNC;
- if (error) {
- vput(vp);
- nfsm_reply(NFSX_WCCDATA(v3));
- nfsm_srvwcc_data(preat_ret, &preat, postat_ret, vap);
- return (0);
}
+ if (!preattrerr && !VATTR_ALL_SUPPORTED(&preattr)) {
+ preattrerr = ENOENT;
+ }
+ nfsmerr_if(error);
}
/*
- * If the size is being changed write acces is required, otherwise
- * just check for a read only file system.
+ * If the credentials were mapped, we should
+ * map the same values in the attributes.
*/
- if (vap->va_size == ((u_quad_t)((quad_t) -1))) {
- if (rdonly || (vp->v_mount->mnt_flag & MNT_RDONLY)) {
- error = EROFS;
- goto out;
+ if ((vap->va_uid == saved_uid) && (kauth_cred_getuid(nd->nd_cr) != saved_uid)) {
+ int ismember;
+ VATTR_SET(vap, va_uid, kauth_cred_getuid(nd->nd_cr));
+ if (kauth_cred_ismember_gid(nd->nd_cr, vap->va_gid, &ismember) || !ismember) {
+ VATTR_SET(vap, va_gid, kauth_cred_getgid(nd->nd_cr));
}
- } else {
- if (vp->v_type == VDIR) {
- error = EISDIR;
- goto out;
- } else if ((error = nfsrv_access(vp, VWRITE, cred, rdonly,
- procp, 0)))
- goto out;
}
- error = VOP_SETATTR(vp, vap, cred, procp);
- postat_ret = VOP_GETATTR(vp, vap, cred, procp);
- if (!error)
- error = postat_ret;
-out:
- vput(vp);
- nfsm_reply(NFSX_WCCORFATTR(v3));
- if (v3) {
- nfsm_srvwcc_data(preat_ret, &preat, postat_ret, vap);
- return (0);
+
+ /* Authorize the attribute changes. */
+ error = vnode_authattr(vp, vap, &action, ctx);
+ if (!error) {
+ error = nfsrv_authorize(vp, NULL, action, ctx, nxo, 0);
+ }
+
+#if CONFIG_MACF
+ if (!error && mac_vnode_check_open(ctx, vp, FREAD | FWRITE)) {
+ error = ESTALE;
+ }
+
+ if (!error) {
+ /* chown case */
+ if (VATTR_IS_ACTIVE(vap, va_uid) || VATTR_IS_ACTIVE(vap, va_gid)) {
+ error = mac_vnode_check_setowner(ctx, vp,
+ VATTR_IS_ACTIVE(vap, va_uid) ? vap->va_uid : -1,
+ VATTR_IS_ACTIVE(vap, va_gid) ? vap->va_gid : -1);
+ }
+ /* chmod case */
+ if (!error && VATTR_IS_ACTIVE(vap, va_mode)) {
+ error = mac_vnode_check_setmode(ctx, vp, (mode_t)vap->va_mode);
+ }
+ /* truncate case */
+ if (!error && VATTR_IS_ACTIVE(vap, va_data_size)) {
+ /* NOTE: File has not been open for NFS case, so NOCRED for filecred */
+ error = mac_vnode_check_truncate(ctx, NOCRED, vp);
+ }
+ /* set utimes case */
+ if (!error && (VATTR_IS_ACTIVE(vap, va_access_time) || VATTR_IS_ACTIVE(vap, va_modify_time))) {
+ struct timespec current_time;
+ nanotime(¤t_time);
+
+ error = mac_vnode_check_setutimes(ctx, vp,
+ VATTR_IS_ACTIVE(vap, va_access_time) ? vap->va_access_time : current_time,
+ VATTR_IS_ACTIVE(vap, va_modify_time) ? vap->va_modify_time : current_time);
+ }
+ }
+#endif
+ /* set the new attributes */
+ if (!error) {
+ error = vnode_setattr(vp, vap, ctx);
+ }
+
+ if (!error || (nd->nd_vers == NFS_VER3)) {
+ nfsm_srv_vattr_init(&postattr, nd->nd_vers);
+ postattrerr = vnode_getattr(vp, &postattr, ctx);
+ if (!error) {
+ error = postattrerr;
+ }
+ }
+
+nfsmerr:
+ if (vp) {
+ vnode_put(vp);
+ }
+
+ /* assemble reply */
+ nd->nd_repstat = error;
+ error = nfsrv_rephead(nd, slp, &nmrep, NFSX_WCCORFATTR(nd->nd_vers));
+ nfsmout_if(error);
+ *mrepp = nmrep.nmc_mhead;
+ nfsmout_on_status(nd, error);
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_chain_add_wcc_data(error, nd, &nmrep,
+ preattrerr, &preattr, postattrerr, &postattr);
} else {
- nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
- nfsm_srvfillattr(vap, fp);
+ error = nfsm_chain_add_fattr(nd, &nmrep, &postattr);
+ }
+nfsmout:
+ nfsm_chain_build_done(error, &nmrep);
+ if (error) {
+ nfsm_chain_cleanup(&nmrep);
+ *mrepp = NULL;
}
- nfsm_srvdone;
+ return error;
}
/*
* nfs lookup rpc
*/
int
-nfsrv_lookup(nfsd, slp, procp, mrq)
- struct nfsrv_descript *nfsd;
- struct nfssvc_sock *slp;
- struct proc *procp;
- struct mbuf **mrq;
+nfsrv_lookup(
+ struct nfsrv_descript *nd,
+ struct nfsrv_sock *slp,
+ vfs_context_t ctx,
+ mbuf_t *mrepp)
{
- struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
- struct mbuf *nam = nfsd->nd_nam;
- caddr_t dpos = nfsd->nd_dpos;
- struct ucred *cred = &nfsd->nd_cr;
- register struct nfs_fattr *fp;
- struct nameidata nd, *ndp = &nd;
-#ifdef notdef
- struct nameidata ind;
+ struct nameidata ni;
+ vnode_t vp, dirp = NULL;
+ struct nfs_filehandle dnfh, nfh;
+ struct nfs_export *nx = NULL;
+ struct nfs_export_options *nxo;
+ int error, attrerr, dirattrerr, isdotdot;
+ uint32_t len = 0;
+ uid_t saved_uid;
+ struct vnode_attr va, dirattr, *vap = &va;
+ struct nfsm_chain *nmreq, nmrep;
+
+ error = 0;
+ attrerr = dirattrerr = ENOENT;
+ nmreq = &nd->nd_nmreq;
+ nfsm_chain_null(&nmrep);
+ saved_uid = kauth_cred_getuid(nd->nd_cr);
+
+ nfsm_chain_get_fh_ptr(error, nmreq, nd->nd_vers, dnfh.nfh_fhp, dnfh.nfh_len);
+ nfsm_chain_get_32(error, nmreq, len);
+ nfsm_name_len_check(error, nd, len);
+ nfsmerr_if(error);
+
+ ni.ni_cnd.cn_nameiop = LOOKUP;
+#if CONFIG_TRIGGERS
+ ni.ni_op = OP_LOOKUP;
#endif
- struct vnode *vp, *dirp;
- nfsfh_t nfh;
- fhandle_t *fhp;
- register caddr_t cp;
- register u_long *tl;
- register long t1;
- caddr_t bpos;
- int error = 0, cache, len, dirattr_ret = 1;
- int v3 = (nfsd->nd_flag & ND_NFSV3), pubflag;
- char *cp2;
- struct mbuf *mb, *mb2, *mreq;
- struct vattr va, dirattr, *vap = &va;
- u_quad_t frev;
-
- fhp = &nfh.fh_generic;
- nfsm_srvmtofh(fhp);
- nfsm_srvnamesiz(len);
-
- pubflag = nfs_ispublicfh(fhp);
-
- nd.ni_cnd.cn_cred = cred;
- nd.ni_cnd.cn_nameiop = LOOKUP;
- nd.ni_cnd.cn_flags = LOCKLEAF | SAVESTART;
- error = nfs_namei(&nd, fhp, len, slp, nam, &md, &dpos,
- &dirp, procp, (nfsd->nd_flag & ND_KERBAUTH), pubflag);
-
-/* XXX CSM 12/4/97 Revisit when enabling WebNFS */
-#ifdef notyet
- if (!error && pubflag) {
- if (nd.ni_vp->v_type == VDIR && nfs_pub.np_index != NULL) {
- /*
- * Setup call to lookup() to see if we can find
- * the index file. Arguably, this doesn't belong
- * in a kernel.. Ugh.
- */
- ind = nd;
- VOP_UNLOCK(nd.ni_vp, 0, procp);
- ind.ni_pathlen = strlen(nfs_pub.np_index);
- ind.ni_cnd.cn_nameptr = ind.ni_cnd.cn_pnbuf =
- nfs_pub.np_index;
- ind.ni_startdir = nd.ni_vp;
- VREF(ind.ni_startdir);
- error = lookup(&ind);
- if (!error) {
- /*
- * Found an index file. Get rid of
- * the old references.
- */
- if (dirp)
- vrele(dirp);
- dirp = nd.ni_vp;
- vrele(nd.ni_startdir);
- ndp = &ind;
- } else
- error = 0;
+ ni.ni_cnd.cn_flags = LOCKLEAF;
+ error = nfsm_chain_get_path_namei(nmreq, len, &ni);
+ isdotdot = ((len == 2) && (ni.ni_cnd.cn_pnbuf[0] == '.') && (ni.ni_cnd.cn_pnbuf[1] == '.'));
+ if (!error) {
+ error = nfsrv_namei(nd, ctx, &ni, &dnfh, &dirp, &nx, &nxo);
+ if (nx != NULL) {
+ /* update export stats */
+ NFSStatAdd64(&nx->nx_stats.ops, 1);
+
+ /* update active user stats */
+ nfsrv_update_user_stat(nx, nd, saved_uid, 1, 0, 0);
}
- /*
- * If the public filehandle was used, check that this lookup
- * didn't result in a filehandle outside the publicly exported
- * filesystem.
- */
+ if (!error && mac_vnode_check_open(ctx, ni.ni_vp, FREAD)) {
+ error = EACCES;
+ if (dirp) {
+ vnode_put(dirp);
+ dirp = NULL;
+ }
- if (!error && ndp->ni_vp->v_mount != nfs_pub.np_mount) {
- vput(nd.ni_vp);
- error = EPERM;
+ if (ni.ni_vp) {
+ vnode_put(ni.ni_vp);
+ ni.ni_vp = NULL;
+ }
}
}
-#endif
if (dirp) {
- if (v3)
- dirattr_ret = VOP_GETATTR(dirp, &dirattr, cred,
- procp);
- vrele(dirp);
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_srv_vattr_init(&dirattr, NFS_VER3);
+ dirattrerr = vnode_getattr(dirp, &dirattr, ctx);
+ }
+ vnode_put(dirp);
}
+ nfsmerr_if(error);
- if (error) {
- nfsm_reply(NFSX_POSTOPATTR(v3));
- nfsm_srvpostop_attr(dirattr_ret, &dirattr);
- return (0);
- }
-
- nqsrv_getl(ndp->ni_startdir, ND_READ);
- vrele(ndp->ni_startdir);
- FREE_ZONE(nd.ni_cnd.cn_pnbuf, nd.ni_cnd.cn_pnlen, M_NAMEI);
- nd.ni_cnd.cn_flags &= ~HASBUF;
- vp = ndp->ni_vp;
- bzero((caddr_t)fhp, sizeof(nfh));
- fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
- error = VFS_VPTOFH(vp, &fhp->fh_fid);
- if (!error)
- error = VOP_GETATTR(vp, vap, cred, procp);
- vput(vp);
- nfsm_reply(NFSX_SRVFH(v3) + NFSX_POSTOPORFATTR(v3) + NFSX_POSTOPATTR(v3));
- if (error) {
- nfsm_srvpostop_attr(dirattr_ret, &dirattr);
- return (0);
+ nameidone(&ni);
+
+ vp = ni.ni_vp;
+ error = nfsrv_vptofh(nx, nd->nd_vers, (isdotdot ? &dnfh : NULL), vp, ctx, &nfh);
+ if (!error) {
+ nfsm_srv_vattr_init(vap, nd->nd_vers);
+ attrerr = vnode_getattr(vp, vap, ctx);
}
- nfsm_srvfhtom(fhp, v3);
- if (v3) {
- nfsm_srvpostop_attr(0, vap);
- nfsm_srvpostop_attr(dirattr_ret, &dirattr);
- } else {
- nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
- nfsm_srvfillattr(vap, fp);
+ vnode_put(vp);
+
+nfsmerr:
+ /* assemble reply */
+ nd->nd_repstat = error;
+ error = nfsrv_rephead(nd, slp, &nmrep, NFSX_SRVFH(nd->nd_vers, &nfh) +
+ NFSX_POSTOPORFATTR(nd->nd_vers) + NFSX_POSTOPATTR(nd->nd_vers));
+ nfsmout_if(error);
+ *mrepp = nmrep.nmc_mhead;
+ if (nd->nd_repstat) {
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_chain_add_postop_attr(error, nd, &nmrep, dirattrerr, &dirattr);
+ }
+ goto nfsmout;
+ }
+ nfsm_chain_add_fh(error, &nmrep, nd->nd_vers, nfh.nfh_fhp, nfh.nfh_len);
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_chain_add_postop_attr(error, nd, &nmrep, attrerr, vap);
+ nfsm_chain_add_postop_attr(error, nd, &nmrep, dirattrerr, &dirattr);
+ } else if (!error) {
+ error = nfsm_chain_add_fattr(nd, &nmrep, vap);
+ }
+nfsmout:
+ nfsm_chain_build_done(error, &nmrep);
+ if (error) {
+ nfsm_chain_cleanup(&nmrep);
+ *mrepp = NULL;
}
- nfsm_srvdone;
+ return error;
}
/*
* nfs readlink service
*/
int
-nfsrv_readlink(nfsd, slp, procp, mrq)
- struct nfsrv_descript *nfsd;
- struct nfssvc_sock *slp;
- struct proc *procp;
- struct mbuf **mrq;
+nfsrv_readlink(
+ struct nfsrv_descript *nd,
+ struct nfsrv_sock *slp,
+ vfs_context_t ctx,
+ mbuf_t *mrepp)
{
- struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
- struct mbuf *nam = nfsd->nd_nam;
- caddr_t dpos = nfsd->nd_dpos;
- struct ucred *cred = &nfsd->nd_cr;
- struct iovec iv[(NFS_MAXPATHLEN+MLEN-1)/MLEN];
- register struct iovec *ivp = iv;
- register struct mbuf *mp;
- register u_long *tl;
- register long t1;
- caddr_t bpos;
- int error = 0, rdonly, cache, i, tlen, len, getret;
- int v3 = (nfsd->nd_flag & ND_NFSV3);
- char *cp2;
- struct mbuf *mb, *mb2, *mp2, *mp3, *mreq;
- struct vnode *vp;
- struct vattr attr;
- nfsfh_t nfh;
- fhandle_t *fhp;
- struct uio io, *uiop = &io;
- u_quad_t frev;
-
-#ifndef nolint
- mp2 = mp3 = (struct mbuf *)0;
-#endif
- fhp = &nfh.fh_generic;
- nfsm_srvmtofh(fhp);
- len = 0;
- i = 0;
- while (len < NFS_MAXPATHLEN) {
- MGET(mp, M_WAIT, MT_DATA);
- MCLGET(mp, M_WAIT);
- mp->m_len = NFSMSIZ(mp);
- if (len == 0)
- mp3 = mp2 = mp;
- else {
- mp2->m_next = mp;
- mp2 = mp;
- }
- if ((len+mp->m_len) > NFS_MAXPATHLEN) {
- mp->m_len = NFS_MAXPATHLEN-len;
- len = NFS_MAXPATHLEN;
- } else
- len += mp->m_len;
- ivp->iov_base = mtod(mp, caddr_t);
- ivp->iov_len = mp->m_len;
- i++;
- ivp++;
- }
- uiop->uio_iov = iv;
- uiop->uio_iovcnt = i;
- uiop->uio_offset = 0;
- uiop->uio_resid = len;
- uiop->uio_rw = UIO_READ;
- uiop->uio_segflg = UIO_SYSSPACE;
- uiop->uio_procp = (struct proc *)0;
- if ((error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
- &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE))) {
- m_freem(mp3);
- nfsm_reply(2 * NFSX_UNSIGNED);
- nfsm_srvpostop_attr(1, (struct vattr *)0);
- return (0);
- }
- if (vp->v_type != VLNK) {
- if (v3)
+ int error, mpcnt, tlen, len, attrerr;
+ vnode_t vp;
+ struct vnode_attr vattr;
+ struct nfs_filehandle nfh;
+ struct nfs_export *nx;
+ struct nfs_export_options *nxo;
+ struct nfsm_chain *nmreq, nmrep;
+ mbuf_t mpath, mp;
+ uio_t auio = NULL;
+ char uio_buf[UIO_SIZEOF(4)];
+ char *uio_bufp = &uio_buf[0];
+ int uio_buflen = UIO_SIZEOF(4);
+
+ error = 0;
+ attrerr = ENOENT;
+ nmreq = &nd->nd_nmreq;
+ nfsm_chain_null(&nmrep);
+ mpath = NULL;
+ vp = NULL;
+ len = NFS_MAXPATHLEN;
+
+ nfsm_chain_get_fh_ptr(error, nmreq, nd->nd_vers, nfh.nfh_fhp, nfh.nfh_len);
+ nfsmerr_if(error);
+
+ /* get mbuf list to hold symlink path */
+ error = nfsm_mbuf_get_list(len, &mpath, &mpcnt);
+ nfsmerr_if(error);
+ if (mpcnt > 4) {
+ uio_buflen = UIO_SIZEOF(mpcnt);
+ MALLOC(uio_bufp, char*, uio_buflen, M_TEMP, M_WAITOK);
+ if (!uio_bufp) {
+ error = ENOMEM;
+ }
+ nfsmerr_if(error);
+ }
+ auio = uio_createwithbuffer(mpcnt, 0, UIO_SYSSPACE, UIO_READ, uio_bufp, uio_buflen);
+ if (!auio) {
+ error = ENOMEM;
+ }
+ nfsmerr_if(error);
+
+ for (mp = mpath; mp; mp = mbuf_next(mp)) {
+ uio_addiov(auio, CAST_USER_ADDR_T((caddr_t)mbuf_data(mp)), mbuf_len(mp));
+ }
+
+ error = nfsrv_fhtovp(&nfh, nd, &vp, &nx, &nxo);
+ nfsmerr_if(error);
+
+ /* update export stats */
+ NFSStatAdd64(&nx->nx_stats.ops, 1);
+
+ /* update active user stats */
+ nfsrv_update_user_stat(nx, nd, kauth_cred_getuid(nd->nd_cr), 1, 0, 0);
+
+ error = nfsrv_credcheck(nd, ctx, nx, nxo);
+ nfsmerr_if(error);
+
+ if (vnode_vtype(vp) != VLNK) {
+ if (nd->nd_vers == NFS_VER3) {
error = EINVAL;
- else
+ } else {
error = ENXIO;
- goto out;
+ }
}
- nqsrv_getl(vp, ND_READ);
- error = VOP_READLINK(vp, uiop, cred);
-out:
- getret = VOP_GETATTR(vp, &attr, cred, procp);
- vput(vp);
- if (error) {
- m_freem(mp3);
- mp3 = NULL;
+
+ if (!error) {
+ error = nfsrv_authorize(vp, NULL, KAUTH_VNODE_READ_DATA, ctx, nxo, 0);
+ }
+#if CONFIG_MACF
+ if (mac_vnode_check_open(ctx, vp, FREAD)) {
+ error = ESTALE;
}
- nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_UNSIGNED);
- if (v3) {
- nfsm_srvpostop_attr(getret, &attr);
- if (error)
- return (0);
+ nfsmerr_if(error);
+ if (!error) {
+ error = mac_vnode_check_readlink(ctx, vp);
}
+#endif
if (!error) {
- if (uiop->uio_resid > 0) {
- len -= uiop->uio_resid;
- tlen = nfsm_rndup(len);
- nfsm_adj(mp3, NFS_MAXPATHLEN-tlen, tlen-len);
+ error = VNOP_READLINK(vp, auio, ctx);
+ }
+ if (vp) {
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_srv_vattr_init(&vattr, NFS_VER3);
+ attrerr = vnode_getattr(vp, &vattr, ctx);
}
- nfsm_build(tl, u_long *, NFSX_UNSIGNED);
- *tl = txdr_unsigned(len);
- mb->m_next = mp3;
+ vnode_put(vp);
+ vp = NULL;
}
- nfsm_srvdone;
-}
-
-/*
- * nfs read service
- */
-int
-nfsrv_read(nfsd, slp, procp, mrq)
- struct nfsrv_descript *nfsd;
- struct nfssvc_sock *slp;
- struct proc *procp;
- struct mbuf **mrq;
-{
- struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
- struct mbuf *nam = nfsd->nd_nam;
- caddr_t dpos = nfsd->nd_dpos;
- struct ucred *cred = &nfsd->nd_cr;
- register struct iovec *iv;
- struct iovec *iv2;
- register struct mbuf *m;
- register struct nfs_fattr *fp;
- register u_long *tl;
- register long t1;
- register int i;
- caddr_t bpos;
- int error = 0, rdonly, cache, cnt, len, left, siz, tlen, getret;
- int v3 = (nfsd->nd_flag & ND_NFSV3), reqlen;
- char *cp2;
- struct mbuf *mb, *mb2, *mreq;
- struct mbuf *m2;
- struct vnode *vp;
- nfsfh_t nfh;
- fhandle_t *fhp;
- struct uio io, *uiop = &io;
- struct vattr va, *vap = &va;
- off_t off;
- u_quad_t frev;
- int didhold = 0;
-
- fhp = &nfh.fh_generic;
- nfsm_srvmtofh(fhp);
- if (v3) {
- nfsm_dissect(tl, u_long *, 2 * NFSX_UNSIGNED);
- fxdr_hyper(tl, &off);
- } else {
- nfsm_dissect(tl, u_long *, NFSX_UNSIGNED);
- off = (off_t)fxdr_unsigned(u_long, *tl);
- }
- nfsm_srvstrsiz(reqlen, NFS_SRVMAXDATA(nfsd));
- if ((error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
- &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE))) {
- nfsm_reply(2 * NFSX_UNSIGNED);
- nfsm_srvpostop_attr(1, (struct vattr *)0);
- return (0);
- }
- if (vp->v_type != VREG) {
- if (v3)
- error = EINVAL;
- else
- error = (vp->v_type == VDIR) ? EISDIR : EACCES;
+ if (error) {
+ mbuf_freem(mpath);
+ mpath = NULL;
}
+
+nfsmerr:
+ /* assemble reply */
+ nd->nd_repstat = error;
+ error = nfsrv_rephead(nd, slp, &nmrep, NFSX_POSTOPATTR(nd->nd_vers) + NFSX_UNSIGNED);
+ nfsmout_if(error);
+ *mrepp = nmrep.nmc_mhead;
+ nfsmout_on_status(nd, error);
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_chain_add_postop_attr(error, nd, &nmrep, attrerr, &vattr);
+ }
+ if (error || nd->nd_repstat) {
+ nfsm_chain_build_done(error, &nmrep);
+ goto nfsmout;
+ }
+ if (auio && (uio_resid(auio) > 0)) {
+ len -= uio_resid(auio);
+ tlen = nfsm_rndup(len);
+ nfsm_adj(mpath, NFS_MAXPATHLEN - tlen, tlen - len);
+ }
+ nfsm_chain_add_32(error, &nmrep, len);
+ nfsm_chain_build_done(error, &nmrep);
+ nfsmout_if(error);
+ error = mbuf_setnext(nmrep.nmc_mcur, mpath);
if (!error) {
- nqsrv_getl(vp, ND_READ);
- if ((error = nfsrv_access(vp, VREAD, cred, rdonly, procp, 1)))
- error = nfsrv_access(vp, VEXEC, cred, rdonly, procp, 1);
+ mpath = NULL;
}
- getret = VOP_GETATTR(vp, vap, cred, procp);
- if (!error)
- error = getret;
- if (error) {
- vput(vp);
- nfsm_reply(NFSX_POSTOPATTR(v3));
- nfsm_srvpostop_attr(getret, vap);
- return (0);
- }
- if (off >= vap->va_size)
- cnt = 0;
- else if ((off + reqlen) > vap->va_size)
- cnt = nfsm_rndup(vap->va_size - off);
- else
- cnt = reqlen;
- nfsm_reply(NFSX_POSTOPORFATTR(v3) + 3 * NFSX_UNSIGNED+nfsm_rndup(cnt));
- if (v3) {
- nfsm_build(tl, u_long *, NFSX_V3FATTR + 4 * NFSX_UNSIGNED);
- *tl++ = nfs_true;
- fp = (struct nfs_fattr *)tl;
- tl += (NFSX_V3FATTR / sizeof (u_long));
- } else {
- nfsm_build(tl, u_long *, NFSX_V2FATTR + NFSX_UNSIGNED);
- fp = (struct nfs_fattr *)tl;
- tl += (NFSX_V2FATTR / sizeof (u_long));
+nfsmout:
+ if (vp) {
+ vnode_put(vp);
}
- len = left = cnt;
- if (cnt > 0) {
- /*
- * Generate the mbuf list with the uio_iov ref. to it.
- */
- i = 0;
- m = m2 = mb;
- while (left > 0) {
- siz = min(M_TRAILINGSPACE(m), left);
- if (siz > 0) {
- left -= siz;
- i++;
- }
- if (left > 0) {
- MGET(m, M_WAIT, MT_DATA);
- MCLGET(m, M_WAIT);
- m->m_len = 0;
- m2->m_next = m;
- m2 = m;
- }
- }
- MALLOC(iv, struct iovec *, i * sizeof (struct iovec),
- M_TEMP, M_WAITOK);
- uiop->uio_iov = iv2 = iv;
- m = mb;
- left = cnt;
- i = 0;
- while (left > 0) {
- if (m == NULL)
- panic("nfsrv_read iov");
- siz = min(M_TRAILINGSPACE(m), left);
- if (siz > 0) {
- iv->iov_base = mtod(m, caddr_t) + m->m_len;
- iv->iov_len = siz;
- m->m_len += siz;
- left -= siz;
- iv++;
- i++;
- }
- m = m->m_next;
- }
- uiop->uio_iovcnt = i;
- uiop->uio_offset = off;
- uiop->uio_resid = cnt;
- uiop->uio_rw = UIO_READ;
- uiop->uio_segflg = UIO_SYSSPACE;
- didhold = ubc_hold(vp);
- error = VOP_READ(vp, uiop, IO_NODELOCKED, cred);
- off = uiop->uio_offset;
- FREE((caddr_t)iv2, M_TEMP);
- /*
- * This may seem a little weird that we drop the whole
- * successful read if we get an error on the getattr.
- * The reason is because we've already set up the reply
- * to have postop attrs and omitting these optional bits
- * would require shifting all the data in the reply.
- *
- * It would be more correct if we would simply drop the
- * postop attrs if the getattr fails. We might be able to
- * do that easier if we allocated separate mbufs for the data.
- */
- if (error || (getret = VOP_GETATTR(vp, vap, cred, procp))) {
- VOP_UNLOCK(vp, 0, procp);
- if (didhold)
- ubc_rele(vp);
- if (!error)
- error = getret;
- m_freem(mreq);
- vrele(vp);
- nfsm_reply(NFSX_POSTOPATTR(v3));
- nfsm_srvpostop_attr(getret, vap);
- return (0);
- }
- VOP_UNLOCK(vp, 0, procp);
- if (didhold)
- ubc_rele(vp);
- vrele(vp);
- } else {
- uiop->uio_resid = 0;
- vput(vp);
+ if (mpath) {
+ mbuf_freem(mpath);
}
- nfsm_srvfillattr(vap, fp);
- len -= uiop->uio_resid;
- tlen = nfsm_rndup(len);
- if (cnt != tlen || tlen != len)
- nfsm_adj(mb, cnt - tlen, tlen - len);
- if (v3) {
- *tl++ = txdr_unsigned(len);
- if (len < reqlen)
- *tl++ = nfs_true;
- else
- *tl++ = nfs_false;
- }
- *tl = txdr_unsigned(len);
- nfsm_srvdone;
+ if (uio_bufp != &uio_buf[0]) {
+ FREE(uio_bufp, M_TEMP);
+ }
+ if (error) {
+ nfsm_chain_cleanup(&nmrep);
+ *mrepp = NULL;
+ }
+ return error;
}
/*
- * nfs write service
+ * nfs read service
*/
int
-nfsrv_write(nfsd, slp, procp, mrq)
- struct nfsrv_descript *nfsd;
- struct nfssvc_sock *slp;
- struct proc *procp;
- struct mbuf **mrq;
+nfsrv_read(
+ struct nfsrv_descript *nd,
+ struct nfsrv_sock *slp,
+ vfs_context_t ctx,
+ mbuf_t *mrepp)
{
- struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
- struct mbuf *nam = nfsd->nd_nam;
- caddr_t dpos = nfsd->nd_dpos;
- struct ucred *cred = &nfsd->nd_cr;
- register struct iovec *ivp;
- register int i, cnt;
- register struct mbuf *mp;
- register struct nfs_fattr *fp;
- struct iovec *iv;
- struct vattr va, forat;
- register struct vattr *vap = &va;
- register u_long *tl;
- register long t1;
- caddr_t bpos;
- int error = 0, rdonly, cache, len, forat_ret = 1;
- int ioflags, aftat_ret = 1, retlen, zeroing, adjust;
- int stable = NFSV3WRITE_FILESYNC;
- int v3 = (nfsd->nd_flag & ND_NFSV3);
- char *cp2;
- struct mbuf *mb, *mb2, *mreq;
- struct vnode *vp;
- nfsfh_t nfh;
- fhandle_t *fhp;
- struct uio io, *uiop = &io;
+ int error, attrerr, mreadcnt;
+ uint32_t reqlen, maxlen, count, len, tlen;
+ mbuf_t mread, m;
+ vnode_t vp;
+ struct nfs_filehandle nfh;
+ struct nfs_export *nx = NULL;
+ struct nfs_export_options *nxo;
+ uio_t auio = NULL;
+ char *uio_bufp = NULL;
+ struct vnode_attr vattr, *vap = &vattr;
off_t off;
- u_quad_t frev;
- int didhold = 0;
-
- if (mrep == NULL) {
- *mrq = NULL;
- return (0);
- }
- fhp = &nfh.fh_generic;
- nfsm_srvmtofh(fhp);
- if (v3) {
- nfsm_dissect(tl, u_long *, 5 * NFSX_UNSIGNED);
- fxdr_hyper(tl, &off);
- tl += 3;
- stable = fxdr_unsigned(int, *tl++);
+ uid_t saved_uid;
+ char uio_buf[UIO_SIZEOF(0)];
+ struct nfsm_chain *nmreq, nmrep;
+
+ error = 0;
+ attrerr = ENOENT;
+ nmreq = &nd->nd_nmreq;
+ nfsm_chain_null(&nmrep);
+ mread = NULL;
+ vp = NULL;
+ len = reqlen = 0;
+ saved_uid = kauth_cred_getuid(nd->nd_cr);
+
+ nfsm_chain_get_fh_ptr(error, nmreq, nd->nd_vers, nfh.nfh_fhp, nfh.nfh_len);
+ nfsmerr_if(error);
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_chain_get_64(error, nmreq, off);
} else {
- nfsm_dissect(tl, u_long *, 4 * NFSX_UNSIGNED);
- off = (off_t)fxdr_unsigned(u_long, *++tl);
- tl += 2;
- if (nfs_async)
- stable = NFSV3WRITE_UNSTABLE;
+ nfsm_chain_get_32(error, nmreq, off);
}
- retlen = len = fxdr_unsigned(long, *tl);
- cnt = i = 0;
+ nfsm_chain_get_32(error, nmreq, reqlen);
+ maxlen = NFSRV_NDMAXDATA(nd);
+ if (reqlen > maxlen) {
+ reqlen = maxlen;
+ }
+ nfsmerr_if(error);
+ error = nfsrv_fhtovp(&nfh, nd, &vp, &nx, &nxo);
+ nfsmerr_if(error);
- /*
- * For NFS Version 2, it is not obvious what a write of zero length
- * should do, but I might as well be consistent with Version 3,
- * which is to return ok so long as there are no permission problems.
- */
- if (len > 0) {
- zeroing = 1;
- mp = mrep;
- while (mp) {
- if (mp == md) {
- zeroing = 0;
- adjust = dpos - mtod(mp, caddr_t);
- mp->m_len -= adjust;
- if (mp->m_len > 0 && adjust > 0)
- NFSMADV(mp, adjust);
- }
- if (zeroing)
- mp->m_len = 0;
- else if (mp->m_len > 0) {
- i += mp->m_len;
- if (i > len) {
- mp->m_len -= (i - len);
- zeroing = 1;
- }
- if (mp->m_len > 0)
- cnt++;
- }
- mp = mp->m_next;
- }
- }
- if (len > NFS_MAXDATA || len < 0 || i < len) {
- error = EIO;
- nfsm_reply(2 * NFSX_UNSIGNED);
- nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, vap);
- return (0);
- }
- if ((error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
- &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE))) {
- nfsm_reply(2 * NFSX_UNSIGNED);
- nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, vap);
- return (0);
- }
- if (v3)
- forat_ret = VOP_GETATTR(vp, &forat, cred, procp);
- if (vp->v_type != VREG) {
- if (v3)
+ /* update export stats */
+ NFSStatAdd64(&nx->nx_stats.ops, 1);
+
+ error = nfsrv_credcheck(nd, ctx, nx, nxo);
+ nfsmerr_if(error);
+
+ if (vnode_vtype(vp) != VREG) {
+ if (nd->nd_vers == NFS_VER3) {
error = EINVAL;
- else
- error = (vp->v_type == VDIR) ? EISDIR : EACCES;
+ } else {
+ error = (vnode_vtype(vp) == VDIR) ? EISDIR : EACCES;
+ }
}
+
if (!error) {
- nqsrv_getl(vp, ND_WRITE);
- error = nfsrv_access(vp, VWRITE, cred, rdonly, procp, 1);
- }
- if (error) {
- vput(vp);
- nfsm_reply(NFSX_WCCDATA(v3));
- nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, vap);
- return (0);
+ if ((error = nfsrv_authorize(vp, NULL, KAUTH_VNODE_READ_DATA, ctx, nxo, 1))) {
+ error = nfsrv_authorize(vp, NULL, KAUTH_VNODE_EXECUTE, ctx, nxo, 1);
+ }
}
+#if CONFIG_MACF
+ if (!error) {
+ error = mac_vnode_check_open(ctx, vp, FREAD);
+ if (error) {
+ error = EACCES;
+ } else {
+ /* XXXab: Do we need to do this?! */
+ error = mac_vnode_check_read(ctx, vfs_context_ucred(ctx), vp);
+ if (error) {
+ error = EACCES;
+ }
+ /* mac_vnode_check_exec() can't be done here. */
+ }
+ }
+ nfsmerr_if(error);
+#endif
+ nfsm_srv_vattr_init(vap, nd->nd_vers);
+ attrerr = vnode_getattr(vp, vap, ctx);
+ if (!error) {
+ error = attrerr;
+ }
+ nfsmerr_if(error);
- if (len > 0) {
- MALLOC(ivp, struct iovec *, cnt * sizeof (struct iovec), M_TEMP,
- M_WAITOK);
- uiop->uio_iov = iv = ivp;
- uiop->uio_iovcnt = cnt;
- mp = mrep;
- while (mp) {
- if (mp->m_len > 0) {
- ivp->iov_base = mtod(mp, caddr_t);
- ivp->iov_len = mp->m_len;
- ivp++;
- }
- mp = mp->m_next;
- }
-
- /*
- * XXX
- * The IO_METASYNC flag indicates that all metadata (and not just
- * enough to ensure data integrity) mus be written to stable storage
- * synchronously.
- * (IO_METASYNC is not yet implemented in 4.4BSD-Lite.)
- */
- if (stable == NFSV3WRITE_UNSTABLE)
- ioflags = IO_NODELOCKED;
- else if (stable == NFSV3WRITE_DATASYNC)
- ioflags = (IO_SYNC | IO_NODELOCKED);
- else
- ioflags = (IO_METASYNC | IO_SYNC | IO_NODELOCKED);
- uiop->uio_resid = len;
- uiop->uio_rw = UIO_WRITE;
- uiop->uio_segflg = UIO_SYSSPACE;
- uiop->uio_procp = (struct proc *)0;
- uiop->uio_offset = off;
- didhold = ubc_hold(vp);
- error = VOP_WRITE(vp, uiop, ioflags, cred);
- nfsstats.srvvop_writes++;
- FREE((caddr_t)iv, M_TEMP);
- }
- aftat_ret = VOP_GETATTR(vp, vap, cred, procp);
- VOP_UNLOCK(vp, 0, procp);
- if (didhold)
- ubc_rele(vp);
- vrele(vp);
- if (!error)
- error = aftat_ret;
- nfsm_reply(NFSX_PREOPATTR(v3) + NFSX_POSTOPORFATTR(v3) +
- 2 * NFSX_UNSIGNED + NFSX_WRITEVERF(v3));
- if (v3) {
- nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, vap);
- if (error)
- return (0);
- nfsm_build(tl, u_long *, 4 * NFSX_UNSIGNED);
- *tl++ = txdr_unsigned(retlen);
- /*
- * If nfs_async is set, then pretend the write was FILESYNC.
- */
- if (stable == NFSV3WRITE_UNSTABLE && !nfs_async)
- *tl++ = txdr_unsigned(stable);
- else
- *tl++ = txdr_unsigned(NFSV3WRITE_FILESYNC);
- /*
- * Actually, there is no need to txdr these fields,
- * but it may make the values more human readable,
- * for debugging purposes.
- */
- *tl++ = txdr_unsigned(boottime.tv_sec);
- *tl = txdr_unsigned(boottime.tv_usec);
+ if ((u_quad_t)off >= vap->va_data_size) {
+ count = 0;
+ } else if (((u_quad_t)off + reqlen) > vap->va_data_size) {
+ count = (int)nfsm_rndup(vap->va_data_size - off);
+ } else {
+ count = reqlen;
+ }
+
+ len = count;
+ if (count > 0) {
+ /* get mbuf list to hold read data */
+ error = nfsm_mbuf_get_list(count, &mread, &mreadcnt);
+ nfsmerr_if(error);
+ MALLOC(uio_bufp, char *, UIO_SIZEOF(mreadcnt), M_TEMP, M_WAITOK);
+ if (uio_bufp) {
+ auio = uio_createwithbuffer(mreadcnt, off, UIO_SYSSPACE,
+ UIO_READ, uio_bufp, UIO_SIZEOF(mreadcnt));
+ }
+ if (!uio_bufp || !auio) {
+ error = ENOMEM;
+ goto errorexit;
+ }
+ for (m = mread; m; m = mbuf_next(m)) {
+ uio_addiov(auio, CAST_USER_ADDR_T((caddr_t)mbuf_data(m)), mbuf_len(m));
+ }
+ error = VNOP_READ(vp, auio, IO_NODELOCKED, ctx);
+ } else {
+ auio = uio_createwithbuffer(0, 0, UIO_SYSSPACE, UIO_READ, &uio_buf[0], sizeof(uio_buf));
+ if (!auio) {
+ error = ENOMEM;
+ goto errorexit;
+ }
+ }
+
+errorexit:
+ if (!error || (nd->nd_vers == NFS_VER3)) {
+ nfsm_srv_vattr_init(vap, nd->nd_vers);
+ attrerr = vnode_getattr(vp, vap, ctx);
+ if (!error && (nd->nd_vers == NFS_VER2)) {
+ error = attrerr; /* NFSv2 must have attributes to return */
+ }
+ }
+ nfsmerr_if(error);
+
+ vnode_put(vp);
+ vp = NULL;
+
+ /* trim off any data not actually read */
+ len -= uio_resid(auio);
+ tlen = nfsm_rndup(len);
+ if (count != tlen || tlen != len) {
+ nfsm_adj(mread, count - tlen, tlen - len);
+ }
+
+nfsmerr:
+ /* assemble reply */
+ nd->nd_repstat = error;
+ error = nfsrv_rephead(nd, slp, &nmrep, NFSX_POSTOPORFATTR(nd->nd_vers) + 3 * NFSX_UNSIGNED);
+ nfsmout_if(error);
+ *mrepp = nmrep.nmc_mhead;
+ nfsmout_on_status(nd, error);
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_chain_add_postop_attr(error, nd, &nmrep, attrerr, vap);
+ }
+ if (error || nd->nd_repstat) {
+ nfsm_chain_build_done(error, &nmrep);
+ goto nfsmout;
+ }
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_chain_add_32(error, &nmrep, len);
+ nfsm_chain_add_32(error, &nmrep, (len < reqlen) ? TRUE : FALSE);
} else {
- nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
- nfsm_srvfillattr(vap, fp);
+ error = nfsm_chain_add_fattr(nd, &nmrep, vap);
+ }
+ nfsm_chain_add_32(error, &nmrep, len);
+ nfsm_chain_build_done(error, &nmrep);
+ nfsmout_if(error);
+ error = mbuf_setnext(nmrep.nmc_mcur, mread);
+ if (!error) {
+ mread = NULL;
+ }
+
+ /* update export stats */
+ NFSStatAdd64(&nx->nx_stats.bytes_read, len);
+
+ /* update active user stats */
+ nfsrv_update_user_stat(nx, nd, saved_uid, 1, len, 0);
+nfsmout:
+ if (vp) {
+ vnode_put(vp);
+ }
+ if (mread) {
+ mbuf_freem(mread);
+ }
+ if (uio_bufp != NULL) {
+ FREE(uio_bufp, M_TEMP);
+ }
+ if (error) {
+ nfsm_chain_cleanup(&nmrep);
+ *mrepp = NULL;
}
- nfsm_srvdone;
+ return error;
}
+#if CONFIG_FSE
/*
- * NFS write service with write gathering support. Called when
- * nfsrvw_procrastinate > 0.
- * See: Chet Juszczak, "Improving the Write Performance of an NFS Server",
- * in Proc. of the Winter 1994 Usenix Conference, pg. 247-259, San Franscisco,
- * Jan. 1994.
+ * NFS File modification reporting
+ *
+ * When the contents of a file are changed, a "content modified"
+ * fsevent needs to be issued. Normally this would be done at
+ * file close time. This is difficult for NFS because the protocol
+ * has no "close" operation. The client sends a stream of write
+ * requests that just stop. So we keep a hash table full of
+ * vnodes that have been written to recently, and issue a
+ * "content modified" fsevent only if there are no writes to
+ * a vnode for nfsrv_fmod_pendtime milliseconds.
*/
-int
-nfsrv_writegather(ndp, slp, procp, mrq)
- struct nfsrv_descript **ndp;
- struct nfssvc_sock *slp;
- struct proc *procp;
- struct mbuf **mrq;
+int nfsrv_fmod_pending; /* count of vnodes being written to */
+int nfsrv_fmod_pendtime = 1000; /* msec to wait */
+int nfsrv_fmod_min_interval = 100; /* msec min interval between callbacks */
+
+/*
+ * This function is called via the kernel's callout
+ * mechanism. Calls are made only when there are
+ * vnodes pending a fsevent creation, and no more
+ * frequently than every nfsrv_fmod_min_interval ms.
+ */
+void
+nfsrv_fmod_timer(__unused void *param0, __unused void *param1)
{
- register struct iovec *ivp;
- register struct mbuf *mp;
- register struct nfsrv_descript *wp, *nfsd, *owp, *swp;
- register struct nfs_fattr *fp;
- register int i;
- struct iovec *iov;
- struct nfsrvw_delayhash *wpp;
- struct ucred *cred;
- struct vattr va, forat;
- register u_long *tl;
- register long t1;
- caddr_t bpos, dpos;
- int error = 0, rdonly, cache, len, forat_ret = 1;
- int ioflags, aftat_ret = 1, s, adjust, v3, zeroing;
- char *cp2;
- struct mbuf *mb, *mb2, *mreq, *mrep, *md;
- struct vnode *vp;
- struct uio io, *uiop = &io;
- u_quad_t frev, cur_usec;
- int didhold;
- struct timeval now;
+ struct nfsrv_fmod_hashhead *headp, firehead;
+ struct nfsrv_fmod *fp, *nfp, *pfp;
+ uint64_t timenow, next_deadline;
+ time_t interval = 0;
+ int i, fmod_fire;
+
+ LIST_INIT(&firehead);
+ lck_mtx_lock(&nfsrv_fmod_mutex);
+again:
+ clock_get_uptime(&timenow);
+ clock_interval_to_deadline(nfsrv_fmod_pendtime, 1000 * 1000,
+ &next_deadline);
-#ifndef nolint
- i = 0;
- len = 0;
-#endif
- *mrq = NULL;
- if (*ndp) {
- nfsd = *ndp;
- *ndp = NULL;
- mrep = nfsd->nd_mrep;
- md = nfsd->nd_md;
- dpos = nfsd->nd_dpos;
- cred = &nfsd->nd_cr;
- v3 = (nfsd->nd_flag & ND_NFSV3);
- LIST_INIT(&nfsd->nd_coalesce);
- nfsd->nd_mreq = NULL;
- nfsd->nd_stable = NFSV3WRITE_FILESYNC;
- microuptime(&now);
- cur_usec = (u_quad_t)now.tv_sec * 1000000 + (u_quad_t)now.tv_usec;
- nfsd->nd_time = cur_usec +
- (v3 ? nfsrvw_procrastinate_v3 : nfsrvw_procrastinate);
-
- /*
- * Now, get the write header..
- */
- nfsm_srvmtofh(&nfsd->nd_fh);
- if (v3) {
- nfsm_dissect(tl, u_long *, 5 * NFSX_UNSIGNED);
- fxdr_hyper(tl, &nfsd->nd_off);
- tl += 3;
- nfsd->nd_stable = fxdr_unsigned(int, *tl++);
- } else {
- nfsm_dissect(tl, u_long *, 4 * NFSX_UNSIGNED);
- nfsd->nd_off = (off_t)fxdr_unsigned(u_long, *++tl);
- tl += 2;
- if (nfs_async)
- nfsd->nd_stable = NFSV3WRITE_UNSTABLE;
- }
- len = fxdr_unsigned(long, *tl);
- nfsd->nd_len = len;
- nfsd->nd_eoff = nfsd->nd_off + len;
-
- /*
- * Trim the header out of the mbuf list and trim off any trailing
- * junk so that the mbuf list has only the write data.
- */
- zeroing = 1;
- i = 0;
- mp = mrep;
- while (mp) {
- if (mp == md) {
- zeroing = 0;
- adjust = dpos - mtod(mp, caddr_t);
- mp->m_len -= adjust;
- if (mp->m_len > 0 && adjust > 0)
- NFSMADV(mp, adjust);
- }
- if (zeroing)
- mp->m_len = 0;
- else {
- i += mp->m_len;
- if (i > len) {
- mp->m_len -= (i - len);
- zeroing = 1;
- }
- }
- mp = mp->m_next;
- }
- if (len > NFS_MAXDATA || len < 0 || i < len) {
-nfsmout:
- m_freem(mrep);
- mrep = NULL;
- error = EIO;
- nfsm_writereply(2 * NFSX_UNSIGNED, v3);
- if (v3)
- nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, &va);
- nfsd->nd_mreq = mreq;
- nfsd->nd_mrep = NULL;
- nfsd->nd_time = 0;
- }
-
- /*
- * Add this entry to the hash and time queues.
- */
- s = splsoftclock();
- owp = NULL;
- wp = slp->ns_tq.lh_first;
- while (wp && wp->nd_time < nfsd->nd_time) {
- owp = wp;
- wp = wp->nd_tq.le_next;
- }
- NFS_DPF(WG, ("Q%03x", nfsd->nd_retxid & 0xfff));
- if (owp) {
- LIST_INSERT_AFTER(owp, nfsd, nd_tq);
- } else {
- LIST_INSERT_HEAD(&slp->ns_tq, nfsd, nd_tq);
- }
- if (nfsd->nd_mrep) {
- wpp = NWDELAYHASH(slp, nfsd->nd_fh.fh_fid.fid_data);
- owp = NULL;
- wp = wpp->lh_first;
- while (wp &&
- bcmp((caddr_t)&nfsd->nd_fh,(caddr_t)&wp->nd_fh,NFSX_V3FH)) {
- owp = wp;
- wp = wp->nd_hash.le_next;
- }
- while (wp && wp->nd_off < nfsd->nd_off &&
- !bcmp((caddr_t)&nfsd->nd_fh,(caddr_t)&wp->nd_fh,NFSX_V3FH)) {
- owp = wp;
- wp = wp->nd_hash.le_next;
- }
- if (owp) {
- LIST_INSERT_AFTER(owp, nfsd, nd_hash);
-
- /*
- * Search the hash list for overlapping entries and
- * coalesce.
- */
- for(; nfsd && NFSW_CONTIG(owp, nfsd); nfsd = wp) {
- wp = nfsd->nd_hash.le_next;
- if (NFSW_SAMECRED(owp, nfsd))
- nfsrvw_coalesce(owp, nfsd);
- }
- } else {
- LIST_INSERT_HEAD(wpp, nfsd, nd_hash);
- }
- }
- splx(s);
- }
-
/*
- * Now, do VOP_WRITE()s for any one(s) that need to be done now
- * and generate the associated reply mbuf list(s).
+ * Scan all the hash chains
*/
-loop1:
- microuptime(&now);
- cur_usec = (u_quad_t)now.tv_sec * 1000000 + (u_quad_t)now.tv_usec;
- s = splsoftclock();
- for (nfsd = slp->ns_tq.lh_first; nfsd; nfsd = owp) {
- owp = nfsd->nd_tq.le_next;
- if (nfsd->nd_time > cur_usec)
- break;
- if (nfsd->nd_mreq)
- continue;
- NFS_DPF(WG, ("P%03x", nfsd->nd_retxid & 0xfff));
- LIST_REMOVE(nfsd, nd_tq);
- LIST_REMOVE(nfsd, nd_hash);
- splx(s);
- mrep = nfsd->nd_mrep;
- nfsd->nd_mrep = NULL;
- cred = &nfsd->nd_cr;
- v3 = (nfsd->nd_flag & ND_NFSV3);
- forat_ret = aftat_ret = 1;
- error = nfsrv_fhtovp(&nfsd->nd_fh, 1, &vp, cred, slp,
- nfsd->nd_nam, &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE);
- if (!error) {
- if (v3)
- forat_ret = VOP_GETATTR(vp, &forat, cred, procp);
- if (vp->v_type != VREG) {
- if (v3)
- error = EINVAL;
- else
- error = (vp->v_type == VDIR) ? EISDIR : EACCES;
- }
- } else
- vp = NULL;
- if (!error) {
- nqsrv_getl(vp, ND_WRITE);
- error = nfsrv_access(vp, VWRITE, cred, rdonly, procp, 1);
- }
-
- if (nfsd->nd_stable == NFSV3WRITE_UNSTABLE)
- ioflags = IO_NODELOCKED;
- else if (nfsd->nd_stable == NFSV3WRITE_DATASYNC)
- ioflags = (IO_SYNC | IO_NODELOCKED);
- else
- ioflags = (IO_METASYNC | IO_SYNC | IO_NODELOCKED);
- uiop->uio_rw = UIO_WRITE;
- uiop->uio_segflg = UIO_SYSSPACE;
- uiop->uio_procp = (struct proc *)0;
- uiop->uio_offset = nfsd->nd_off;
- uiop->uio_resid = nfsd->nd_eoff - nfsd->nd_off;
- didhold = 0;
- if (uiop->uio_resid > 0) {
- mp = mrep;
- i = 0;
- while (mp) {
- if (mp->m_len > 0)
- i++;
- mp = mp->m_next;
- }
- uiop->uio_iovcnt = i;
- MALLOC(iov, struct iovec *, i * sizeof (struct iovec),
- M_TEMP, M_WAITOK);
- uiop->uio_iov = ivp = iov;
- mp = mrep;
- while (mp) {
- if (mp->m_len > 0) {
- ivp->iov_base = mtod(mp, caddr_t);
- ivp->iov_len = mp->m_len;
- ivp++;
- }
- mp = mp->m_next;
- }
- if (!error) {
- didhold = ubc_hold(vp);
- error = VOP_WRITE(vp, uiop, ioflags, cred);
- nfsstats.srvvop_writes++;
- }
- FREE((caddr_t)iov, M_TEMP);
- }
- m_freem(mrep);
- mrep = NULL;
- if (vp) {
- aftat_ret = VOP_GETATTR(vp, &va, cred, procp);
- VOP_UNLOCK(vp, 0, procp);
- if (didhold)
- ubc_rele(vp);
- vrele(vp);
+ fmod_fire = 0;
+ for (i = 0; i < NFSRVFMODHASHSZ; i++) {
+ /*
+ * For each hash chain, look for an entry
+ * that has exceeded the deadline.
+ */
+ headp = &nfsrv_fmod_hashtbl[i];
+ LIST_FOREACH(fp, headp, fm_link) {
+ if (timenow >= fp->fm_deadline) {
+ break;
+ }
+ if (fp->fm_deadline < next_deadline) {
+ next_deadline = fp->fm_deadline;
+ }
}
/*
- * Loop around generating replies for all write rpcs that have
- * now been completed.
+ * If we have an entry that's exceeded the
+ * deadline, then the same is true for all
+ * following entries in the chain, since they're
+ * sorted in time order.
*/
- swp = nfsd;
- do {
- NFS_DPF(WG, ("R%03x", nfsd->nd_retxid & 0xfff));
- if (error) {
- nfsm_writereply(NFSX_WCCDATA(v3), v3);
- if (v3) {
- nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, &va);
- }
- } else {
- nfsm_writereply(NFSX_PREOPATTR(v3) +
- NFSX_POSTOPORFATTR(v3) + 2 * NFSX_UNSIGNED +
- NFSX_WRITEVERF(v3), v3);
- if (v3) {
- nfsm_srvwcc_data(forat_ret, &forat, aftat_ret, &va);
- nfsm_build(tl, u_long *, 4 * NFSX_UNSIGNED);
- *tl++ = txdr_unsigned(nfsd->nd_len);
- *tl++ = txdr_unsigned(swp->nd_stable);
- /*
- * Actually, there is no need to txdr these fields,
- * but it may make the values more human readable,
- * for debugging purposes.
- */
- *tl++ = txdr_unsigned(boottime.tv_sec);
- *tl = txdr_unsigned(boottime.tv_usec);
+ pfp = NULL;
+ while (fp) {
+ /* move each entry to the fire list */
+ nfp = LIST_NEXT(fp, fm_link);
+ LIST_REMOVE(fp, fm_link);
+ fmod_fire++;
+ if (pfp) {
+ LIST_INSERT_AFTER(pfp, fp, fm_link);
} else {
- nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
- nfsm_srvfillattr(&va, fp);
- }
- }
- nfsd->nd_mreq = mreq;
- if (nfsd->nd_mrep)
- panic("nfsrv_write: nd_mrep not free");
-
- /*
- * Done. Put it at the head of the timer queue so that
- * the final phase can return the reply.
- */
- s = splsoftclock();
- if (nfsd != swp) {
- nfsd->nd_time = 0;
- LIST_INSERT_HEAD(&slp->ns_tq, nfsd, nd_tq);
- }
- nfsd = swp->nd_coalesce.lh_first;
- if (nfsd) {
- LIST_REMOVE(nfsd, nd_tq);
- }
- splx(s);
- } while (nfsd);
- s = splsoftclock();
- swp->nd_time = 0;
- LIST_INSERT_HEAD(&slp->ns_tq, swp, nd_tq);
- splx(s);
- goto loop1;
+ LIST_INSERT_HEAD(&firehead, fp, fm_link);
+ }
+ pfp = fp;
+ fp = nfp;
+ }
+ }
+
+ if (fmod_fire) {
+ lck_mtx_unlock(&nfsrv_fmod_mutex);
+ /*
+ * Fire off the content modified fsevent for each
+ * entry and free it.
+ */
+ LIST_FOREACH_SAFE(fp, &firehead, fm_link, nfp) {
+ if (nfsrv_fsevents_enabled) {
+ fp->fm_context.vc_thread = current_thread();
+ add_fsevent(FSE_CONTENT_MODIFIED, &fp->fm_context,
+ FSE_ARG_VNODE, fp->fm_vp,
+ FSE_ARG_DONE);
+ }
+ vnode_put(fp->fm_vp);
+ kauth_cred_unref(&fp->fm_context.vc_ucred);
+ LIST_REMOVE(fp, fm_link);
+ FREE(fp, M_TEMP);
+ }
+ lck_mtx_lock(&nfsrv_fmod_mutex);
+ nfsrv_fmod_pending -= fmod_fire;
+ goto again;
}
- splx(s);
/*
- * Search for a reply to return.
+ * If there are still pending entries, set up another
+ * callout to handle them later. Set the timeout deadline
+ * so that the callout happens when the oldest pending
+ * entry is ready to send its fsevent.
*/
- s = splsoftclock();
- for (nfsd = slp->ns_tq.lh_first; nfsd; nfsd = nfsd->nd_tq.le_next)
- if (nfsd->nd_mreq) {
- NFS_DPF(WG, ("X%03x", nfsd->nd_retxid & 0xfff));
- LIST_REMOVE(nfsd, nd_tq);
- *mrq = nfsd->nd_mreq;
- *ndp = nfsd;
- break;
- }
- splx(s);
- return (0);
+ if (nfsrv_fmod_pending > 0) {
+ interval = ((time_t)(next_deadline - timenow)) / (1000 * 1000);
+ if (interval < nfsrv_fmod_min_interval) {
+ interval = nfsrv_fmod_min_interval;
+ }
+ }
+
+ nfsrv_fmod_timer_on = interval > 0;
+ if (nfsrv_fmod_timer_on) {
+ nfs_interval_timer_start(nfsrv_fmod_timer_call, interval);
+ }
+
+ lck_mtx_unlock(&nfsrv_fmod_mutex);
}
/*
- * Coalesce the write request nfsd into owp. To do this we must:
- * - remove nfsd from the queues
- * - merge nfsd->nd_mrep into owp->nd_mrep
- * - update the nd_eoff and nd_stable for owp
- * - put nfsd on owp's nd_coalesce list
- * NB: Must be called at splsoftclock().
+ * When a vnode has been written to, enter it in the hash
+ * table of vnodes pending creation of an fsevent. If the
+ * callout timer isn't already running, schedule a callback
+ * for nfsrv_fmod_pendtime msec from now.
*/
-static void
-nfsrvw_coalesce(owp, nfsd)
- register struct nfsrv_descript *owp;
- register struct nfsrv_descript *nfsd;
+void
+nfsrv_modified(vnode_t vp, vfs_context_t ctx)
{
- register int overlap;
- register struct mbuf *mp;
- struct nfsrv_descript *p;
+ uint64_t deadline;
+ struct nfsrv_fmod *fp;
+ struct nfsrv_fmod_hashhead *head;
- NFS_DPF(WG, ("C%03x-%03x",
- nfsd->nd_retxid & 0xfff, owp->nd_retxid & 0xfff));
- LIST_REMOVE(nfsd, nd_hash);
- LIST_REMOVE(nfsd, nd_tq);
- if (owp->nd_eoff < nfsd->nd_eoff) {
- overlap = owp->nd_eoff - nfsd->nd_off;
- if (overlap < 0)
- panic("nfsrv_coalesce: bad off");
- if (overlap > 0)
- m_adj(nfsd->nd_mrep, overlap);
- mp = owp->nd_mrep;
- while (mp->m_next)
- mp = mp->m_next;
- mp->m_next = nfsd->nd_mrep;
- owp->nd_eoff = nfsd->nd_eoff;
- } else
- m_freem(nfsd->nd_mrep);
- nfsd->nd_mrep = NULL;
- if (nfsd->nd_stable == NFSV3WRITE_FILESYNC)
- owp->nd_stable = NFSV3WRITE_FILESYNC;
- else if (nfsd->nd_stable == NFSV3WRITE_DATASYNC &&
- owp->nd_stable == NFSV3WRITE_UNSTABLE)
- owp->nd_stable = NFSV3WRITE_DATASYNC;
- LIST_INSERT_HEAD(&owp->nd_coalesce, nfsd, nd_tq);
+ lck_mtx_lock(&nfsrv_fmod_mutex);
/*
- * If nfsd had anything else coalesced into it, transfer them
- * to owp, otherwise their replies will never get sent.
+ * Compute the time in the future when the
+ * content modified fsevent is to be issued.
*/
- for (p = nfsd->nd_coalesce.lh_first; p;
- p = nfsd->nd_coalesce.lh_first) {
- LIST_REMOVE(p, nd_tq);
- LIST_INSERT_HEAD(&owp->nd_coalesce, p, nd_tq);
- }
-}
-
-/*
- * Sort the group list in increasing numerical order.
- * (Insertion sort by Chris Torek, who was grossed out by the bubble sort
- * that used to be here.)
- */
-void
-nfsrvw_sort(list, num)
- register gid_t *list;
- register int num;
-{
- register int i, j;
- gid_t v;
+ clock_interval_to_deadline(nfsrv_fmod_pendtime, 1000 * 1000, &deadline);
- /* Insertion sort. */
- for (i = 1; i < num; i++) {
- v = list[i];
- /* find correct slot for value v, moving others up */
- for (j = i; --j >= 0 && v < list[j];)
- list[j + 1] = list[j];
- list[j + 1] = v;
+ /*
+ * Check if there's already a file content change fsevent
+ * pending for this vnode. If there is, update its
+ * timestamp and make sure it's at the front of the hash chain.
+ */
+ head = &nfsrv_fmod_hashtbl[NFSRVFMODHASH(vp)];
+ LIST_FOREACH(fp, head, fm_link) {
+ if (vp == fp->fm_vp) {
+ fp->fm_deadline = deadline;
+ if (fp != LIST_FIRST(head)) {
+ LIST_REMOVE(fp, fm_link);
+ LIST_INSERT_HEAD(head, fp, fm_link);
+ }
+ lck_mtx_unlock(&nfsrv_fmod_mutex);
+ return;
+ }
}
-}
-/*
- * copy credentials making sure that the result can be compared with bcmp().
- */
-void
-nfsrv_setcred(incred, outcred)
- register struct ucred *incred, *outcred;
-{
- register int i;
-
- bzero((caddr_t)outcred, sizeof (struct ucred));
- outcred->cr_ref = 1;
- outcred->cr_uid = incred->cr_uid;
- outcred->cr_ngroups = incred->cr_ngroups;
- for (i = 0; i < incred->cr_ngroups; i++)
- outcred->cr_groups[i] = incred->cr_groups[i];
- nfsrvw_sort(outcred->cr_groups, outcred->cr_ngroups);
+ /*
+ * First content change fsevent for this vnode.
+ * Allocate a new file mod entry and add it
+ * on the front of the hash chain.
+ */
+ if (vnode_get(vp) != 0) {
+ goto done;
+ }
+ MALLOC(fp, struct nfsrv_fmod *, sizeof(*fp), M_TEMP, M_WAITOK);
+ if (fp == NULL) {
+ vnode_put(vp);
+ goto done;
+ }
+ fp->fm_vp = vp;
+ kauth_cred_ref(vfs_context_ucred(ctx));
+ fp->fm_context = *ctx;
+ fp->fm_deadline = deadline;
+ LIST_INSERT_HEAD(head, fp, fm_link);
+
+ /*
+ * If added to an empty hash table, then set the
+ * callout timer to go off after nfsrv_fmod_pendtime.
+ */
+ nfsrv_fmod_pending++;
+ if (!nfsrv_fmod_timer_on) {
+ nfsrv_fmod_timer_on = 1;
+ nfs_interval_timer_start(nfsrv_fmod_timer_call,
+ nfsrv_fmod_pendtime);
+ }
+done:
+ lck_mtx_unlock(&nfsrv_fmod_mutex);
+ return;
}
+#endif /* CONFIG_FSE */
/*
- * nfs create service
- * now does a truncate to 0 length via. setattr if it already exists
+ * nfs write service
*/
int
-nfsrv_create(nfsd, slp, procp, mrq)
- struct nfsrv_descript *nfsd;
- struct nfssvc_sock *slp;
- struct proc *procp;
- struct mbuf **mrq;
+nfsrv_write(
+ struct nfsrv_descript *nd,
+ struct nfsrv_sock *slp,
+ vfs_context_t ctx,
+ mbuf_t *mrepp)
{
- struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
- struct mbuf *nam = nfsd->nd_nam;
- caddr_t dpos = nfsd->nd_dpos;
- struct ucred *cred = &nfsd->nd_cr;
- register struct nfs_fattr *fp;
- struct vattr va, dirfor, diraft;
- register struct vattr *vap = &va;
- register struct nfsv2_sattr *sp;
- register u_long *tl;
- struct nameidata nd;
- register caddr_t cp;
- register long t1;
- caddr_t bpos;
- int error = 0, rdev, cache, len, tsize, dirfor_ret = 1, diraft_ret = 1;
- int v3 = (nfsd->nd_flag & ND_NFSV3), how, exclusive_flag = 0;
- char *cp2;
- struct mbuf *mb, *mb2, *mreq;
- struct vnode *vp, *dirp = (struct vnode *)0;
- nfsfh_t nfh;
- fhandle_t *fhp;
- u_quad_t frev, tempsize;
- u_char cverf[NFSX_V3CREATEVERF];
+ struct vnode_attr preattr, postattr;
+ int error, preattrerr, postattrerr;
+ int ioflags, len, retlen;
+ int mlen, mcount;
+ int stable = NFS_WRITE_FILESYNC;
+ mbuf_t m;
+ vnode_t vp;
+ struct nfs_filehandle nfh;
+ struct nfs_export *nx = NULL;
+ struct nfs_export_options *nxo;
+ uio_t auio = NULL;
+ char *uio_bufp = NULL;
+ off_t off;
+ uid_t saved_uid;
+ struct nfsm_chain *nmreq, nmrep;
-#ifndef nolint
- rdev = 0;
-#endif
- nd.ni_cnd.cn_nameiop = 0;
- fhp = &nfh.fh_generic;
- nfsm_srvmtofh(fhp);
- nfsm_srvnamesiz(len);
- nd.ni_cnd.cn_cred = cred;
- nd.ni_cnd.cn_nameiop = CREATE;
- nd.ni_cnd.cn_flags = LOCKPARENT | LOCKLEAF | SAVESTART;
- error = nfs_namei(&nd, fhp, len, slp, nam, &md, &dpos,
- &dirp, procp, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
- if (dirp) {
- if (v3)
- dirfor_ret = VOP_GETATTR(dirp, &dirfor, cred,
- procp);
- else {
- vrele(dirp);
- dirp = (struct vnode *)0;
- }
+ if (nd->nd_nmreq.nmc_mhead == NULL) {
+ *mrepp = NULL;
+ return 0;
}
- if (error) {
- nfsm_reply(NFSX_WCCDATA(v3));
- nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
- if (dirp)
- vrele(dirp);
- return (0);
- }
- VATTR_NULL(vap);
- if (v3) {
- nfsm_dissect(tl, u_long *, NFSX_UNSIGNED);
- how = fxdr_unsigned(int, *tl);
- switch (how) {
- case NFSV3CREATE_GUARDED:
- if (nd.ni_vp) {
- error = EEXIST;
- break;
- }
- case NFSV3CREATE_UNCHECKED:
- nfsm_srvsattr(vap);
- break;
- case NFSV3CREATE_EXCLUSIVE:
- nfsm_dissect(cp, caddr_t, NFSX_V3CREATEVERF);
- bcopy(cp, cverf, NFSX_V3CREATEVERF);
- exclusive_flag = 1;
- if (nd.ni_vp == NULL)
- vap->va_mode = 0;
- break;
- };
- vap->va_type = VREG;
+
+ error = 0;
+ preattrerr = postattrerr = ENOENT;
+ saved_uid = kauth_cred_getuid(nd->nd_cr);
+ nmreq = &nd->nd_nmreq;
+ nfsm_chain_null(&nmrep);
+ vp = NULL;
+ len = retlen = 0;
+
+ nfsm_chain_get_fh_ptr(error, nmreq, nd->nd_vers, nfh.nfh_fhp, nfh.nfh_len);
+ nfsmerr_if(error);
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_chain_get_64(error, nmreq, off);
+ nfsm_chain_adv(error, nmreq, NFSX_UNSIGNED);
+ nfsm_chain_get_32(error, nmreq, stable);
} else {
- nfsm_dissect(sp, struct nfsv2_sattr *, NFSX_V2SATTR);
- vap->va_type = IFTOVT(fxdr_unsigned(u_long, sp->sa_mode));
- if (vap->va_type == VNON)
- vap->va_type = VREG;
- vap->va_mode = nfstov_mode(sp->sa_mode);
- switch (vap->va_type) {
- case VREG:
- tsize = fxdr_unsigned(long, sp->sa_size);
- if (tsize != -1)
- vap->va_size = (u_quad_t)tsize;
- break;
- case VCHR:
- case VBLK:
- case VFIFO:
- rdev = fxdr_unsigned(long, sp->sa_size);
- break;
- };
+ nfsm_chain_adv(error, nmreq, NFSX_UNSIGNED);
+ nfsm_chain_get_32(error, nmreq, off);
+ nfsm_chain_adv(error, nmreq, NFSX_UNSIGNED);
+ if (nfsrv_async) {
+ stable = NFS_WRITE_UNSTABLE;
+ }
}
+ nfsm_chain_get_32(error, nmreq, len);
+ nfsmerr_if(error);
+ retlen = len;
/*
- * Iff doesn't exist, create it
- * otherwise just truncate to 0 length
- * should I set the mode too ??
+ * For NFS Version 2, it is not obvious what a write of zero length
+ * should do, but I might as well be consistent with Version 3,
+ * which is to return ok so long as there are no permission problems.
*/
- if (nd.ni_vp == NULL) {
- if (vap->va_type == VREG || vap->va_type == VSOCK) {
- vrele(nd.ni_startdir);
- nqsrv_getl(nd.ni_dvp, ND_WRITE);
- error = VOP_CREATE(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, vap);
- if (!error) {
- nfsrv_object_create(nd.ni_vp);
- FREE_ZONE(nd.ni_cnd.cn_pnbuf,
- nd.ni_cnd.cn_pnlen, M_NAMEI);
- nd.ni_cnd.cn_flags &= ~HASBUF;
- if (exclusive_flag) {
- exclusive_flag = 0;
- VATTR_NULL(vap);
- bcopy(cverf, (caddr_t)&vap->va_atime,
- NFSX_V3CREATEVERF);
- error = VOP_SETATTR(nd.ni_vp, vap, cred,
- procp);
- }
+
+ if (len > 0) {
+ error = nfsm_chain_trim_data(nmreq, len, &mlen);
+ nfsmerr_if(error);
+ } else {
+ mlen = 0;
+ }
+ if ((len > NFSRV_MAXDATA) || (len < 0) || (mlen < len)) {
+ error = EIO;
+ goto nfsmerr;
+ }
+ error = nfsrv_fhtovp(&nfh, nd, &vp, &nx, &nxo);
+ nfsmerr_if(error);
+
+ /* update export stats */
+ NFSStatAdd64(&nx->nx_stats.ops, 1);
+
+ error = nfsrv_credcheck(nd, ctx, nx, nxo);
+ nfsmerr_if(error);
+
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_srv_pre_vattr_init(&preattr);
+ preattrerr = vnode_getattr(vp, &preattr, ctx);
+ }
+ if (vnode_vtype(vp) != VREG) {
+ if (nd->nd_vers == NFS_VER3) {
+ error = EINVAL;
+ } else {
+ error = (vnode_vtype(vp) == VDIR) ? EISDIR : EACCES;
+ }
+ }
+ if (!error) {
+ error = nfsrv_authorize(vp, NULL, KAUTH_VNODE_WRITE_DATA, ctx, nxo, 1);
+ }
+ nfsmerr_if(error);
+
+#if CONFIG_MACF
+ if (!error) {
+ error = mac_vnode_check_open(ctx, vp, FWRITE);
+ if (error) {
+ error = EACCES;
+ } else {
+ /* XXXab: Do we need to do this?! */
+ error = mac_vnode_check_write(ctx, vfs_context_ucred(ctx), vp);
+ if (error) {
+ error = EACCES;
}
- } else if (vap->va_type == VCHR || vap->va_type == VBLK ||
- vap->va_type == VFIFO) {
- if (vap->va_type == VCHR && rdev == 0xffffffff)
- vap->va_type = VFIFO;
- if (vap->va_type != VFIFO &&
- (error = suser(cred, (u_short *)0))) {
- vrele(nd.ni_startdir);
- FREE_ZONE(nd.ni_cnd.cn_pnbuf,
- nd.ni_cnd.cn_pnlen, M_NAMEI);
- nd.ni_cnd.cn_flags &= ~HASBUF;
- VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
- vput(nd.ni_dvp);
- nfsm_reply(0);
- return (error);
- } else
- vap->va_rdev = (dev_t)rdev;
- nqsrv_getl(nd.ni_dvp, ND_WRITE);
- if ((error = VOP_MKNOD(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, vap))) {
- vrele(nd.ni_startdir);
- nfsm_reply(0);
- }
- nd.ni_cnd.cn_nameiop = LOOKUP;
- nd.ni_cnd.cn_flags &= ~(LOCKPARENT | SAVESTART);
- nd.ni_cnd.cn_proc = procp;
- nd.ni_cnd.cn_cred = cred;
- if ((error = lookup(&nd))) {
- FREE_ZONE(nd.ni_cnd.cn_pnbuf,
- nd.ni_cnd.cn_pnlen, M_NAMEI);
- nd.ni_cnd.cn_flags &= ~HASBUF;
- nfsm_reply(0);
- }
- nfsrv_object_create(nd.ni_vp);
- FREE_ZONE(nd.ni_cnd.cn_pnbuf,
- nd.ni_cnd.cn_pnlen, M_NAMEI);
- nd.ni_cnd.cn_flags &= ~HASBUF;
- if (nd.ni_cnd.cn_flags & ISSYMLINK) {
- vrele(nd.ni_dvp);
- vput(nd.ni_vp);
- VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
- error = EINVAL;
- nfsm_reply(0);
+ }
+ }
+ nfsmerr_if(error);
+#endif
+
+ if (len > 0) {
+ for (mcount = 0, m = nmreq->nmc_mcur; m; m = mbuf_next(m)) {
+ if (mbuf_len(m) > 0) {
+ mcount++;
}
- } else {
- vrele(nd.ni_startdir);
- FREE_ZONE(nd.ni_cnd.cn_pnbuf,
- nd.ni_cnd.cn_pnlen, M_NAMEI);
- nd.ni_cnd.cn_flags &= ~HASBUF;
- VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
- vput(nd.ni_dvp);
- error = ENXIO;
}
- vp = nd.ni_vp;
- } else {
- vrele(nd.ni_startdir);
- FREE_ZONE(nd.ni_cnd.cn_pnbuf, nd.ni_cnd.cn_pnlen, M_NAMEI);
- nd.ni_cnd.cn_flags &= ~HASBUF;
- vp = nd.ni_vp;
- if (nd.ni_dvp == vp)
- vrele(nd.ni_dvp);
- else
- vput(nd.ni_dvp);
- VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
- if (vap->va_size != -1) {
- error = nfsrv_access(vp, VWRITE, cred,
- (nd.ni_cnd.cn_flags & RDONLY), procp, 0);
- if (!error) {
- nqsrv_getl(vp, ND_WRITE);
- tempsize = vap->va_size;
- VATTR_NULL(vap);
- vap->va_size = tempsize;
- error = VOP_SETATTR(vp, vap, cred,
- procp);
- }
- if (error)
- vput(vp);
+ MALLOC(uio_bufp, char *, UIO_SIZEOF(mcount), M_TEMP, M_WAITOK);
+ if (uio_bufp) {
+ auio = uio_createwithbuffer(mcount, off, UIO_SYSSPACE, UIO_WRITE, uio_bufp, UIO_SIZEOF(mcount));
+ }
+ if (!uio_bufp || !auio) {
+ error = ENOMEM;
+ }
+ nfsmerr_if(error);
+ for (m = nmreq->nmc_mcur; m; m = mbuf_next(m)) {
+ if ((mlen = (int)mbuf_len(m)) > 0) {
+ uio_addiov(auio, CAST_USER_ADDR_T((caddr_t)mbuf_data(m)), mlen);
+ }
+ }
+ /*
+ * XXX The IO_METASYNC flag indicates that all metadata (and not just
+ * enough to ensure data integrity) mus be written to stable storage
+ * synchronously. (IO_METASYNC is not yet implemented in 4.4BSD-Lite.)
+ */
+ if (stable == NFS_WRITE_UNSTABLE) {
+ ioflags = IO_NODELOCKED;
+ } else if (stable == NFS_WRITE_DATASYNC) {
+ ioflags = (IO_SYNC | IO_NODELOCKED);
} else {
- if (error)
- vput(vp); /* make sure we catch the EEXIST for nfsv3 */
+ ioflags = (IO_METASYNC | IO_SYNC | IO_NODELOCKED);
+ }
+
+ error = VNOP_WRITE(vp, auio, ioflags, ctx);
+ OSAddAtomic64(1, &nfsstats.srvvop_writes);
+
+ /* update export stats */
+ NFSStatAdd64(&nx->nx_stats.bytes_written, len);
+
+ /* update active user stats */
+ nfsrv_update_user_stat(nx, nd, saved_uid, 1, 0, len);
+
+#if CONFIG_FSE
+ if (nfsrv_fsevents_enabled && !error && need_fsevent(FSE_CONTENT_MODIFIED, vp)) {
+ nfsrv_modified(vp, ctx);
}
+#endif
}
- if (!error) {
- bzero((caddr_t)fhp, sizeof(nfh));
- fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
- error = VFS_VPTOFH(vp, &fhp->fh_fid);
- if (!error)
- error = VOP_GETATTR(vp, vap, cred, procp);
- vput(vp);
- }
- if (v3) {
- if (exclusive_flag && !error &&
- bcmp(cverf, (caddr_t)&vap->va_atime, NFSX_V3CREATEVERF))
- error = EEXIST;
- diraft_ret = VOP_GETATTR(dirp, &diraft, cred, procp);
- vrele(dirp);
+ nfsm_srv_vattr_init(&postattr, nd->nd_vers);
+ postattrerr = vnode_getattr(vp, &postattr, ctx);
+ if (!error && (nd->nd_vers == NFS_VER2)) {
+ error = postattrerr; /* NFSv2 must have attributes to return */
}
- nfsm_reply(NFSX_SRVFH(v3) + NFSX_FATTR(v3) + NFSX_WCCDATA(v3));
- if (v3) {
- if (!error) {
- nfsm_srvpostop_fh(fhp);
- nfsm_srvpostop_attr(0, vap);
+ vnode_put(vp);
+ vp = NULL;
+
+nfsmerr:
+ /* assemble reply */
+ nd->nd_repstat = error;
+ error = nfsrv_rephead(nd, slp, &nmrep, NFSX_PREOPATTR(nd->nd_vers) +
+ NFSX_POSTOPORFATTR(nd->nd_vers) + 2 * NFSX_UNSIGNED +
+ NFSX_WRITEVERF(nd->nd_vers));
+ nfsmout_if(error);
+ *mrepp = nmrep.nmc_mhead;
+ nfsmout_on_status(nd, error);
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_chain_add_wcc_data(error, nd, &nmrep,
+ preattrerr, &preattr, postattrerr, &postattr);
+ nfsmout_if(error || nd->nd_repstat);
+ nfsm_chain_add_32(error, &nmrep, retlen);
+ /* If nfsrv_async is set, then pretend the write was FILESYNC. */
+ if ((stable == NFS_WRITE_UNSTABLE) && !nfsrv_async) {
+ nfsm_chain_add_32(error, &nmrep, stable);
+ } else {
+ nfsm_chain_add_32(error, &nmrep, NFS_WRITE_FILESYNC);
}
- nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
+ /* write verifier */
+ nfsm_chain_add_32(error, &nmrep, nx->nx_exptime.tv_sec);
+ nfsm_chain_add_32(error, &nmrep, nx->nx_exptime.tv_usec);
} else {
- nfsm_srvfhtom(fhp, v3);
- nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
- nfsm_srvfillattr(vap, fp);
+ error = nfsm_chain_add_fattr(nd, &nmrep, &postattr);
}
- return (0);
nfsmout:
- if (dirp)
- vrele(dirp);
- if (nd.ni_cnd.cn_nameiop) {
- vrele(nd.ni_startdir);
- FREE_ZONE((caddr_t)nd.ni_cnd.cn_pnbuf,
- nd.ni_cnd.cn_pnlen, M_NAMEI);
- nd.ni_cnd.cn_flags &= ~HASBUF;
- }
- VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
- if (nd.ni_dvp == nd.ni_vp)
- vrele(nd.ni_dvp);
- else
- vput(nd.ni_dvp);
- if (nd.ni_vp)
- vput(nd.ni_vp);
- return (error);
+ nfsm_chain_build_done(error, &nmrep);
+ if (vp) {
+ vnode_put(vp);
+ }
+ if (uio_bufp != NULL) {
+ FREE(uio_bufp, M_TEMP);
+ }
+ if (error) {
+ nfsm_chain_cleanup(&nmrep);
+ *mrepp = NULL;
+ }
+ return error;
}
/*
- * nfs v3 mknod service
+ * NFS write service with write gathering support. Called when
+ * nfsrv_wg_delay > 0.
+ * See: Chet Juszczak, "Improving the Write Performance of an NFS Server",
+ * in Proc. of the Winter 1994 Usenix Conference, pg. 247-259, San Franscisco,
+ * Jan. 1994.
+ */
+
+#define NWDELAYHASH(sock, f) \
+ (&(sock)->ns_wdelayhashtbl[(*((u_int32_t *)(f))) % NFS_WDELAYHASHSIZ])
+/* These macros compare nfsrv_descript structures. */
+#define NFSW_CONTIG(o, n) \
+ (((o)->nd_eoff >= (n)->nd_off) && nfsrv_fhmatch(&(o)->nd_fh, &(n)->nd_fh))
+/*
+ * XXX The following is an incorrect comparison; it fails to take into account
+ * XXX scoping of MAC labels, but we currently lack KPI for credential
+ * XXX comparisons.
*/
+#define NFSW_SAMECRED(o, n) \
+ (!bcmp((caddr_t)(o)->nd_cr, (caddr_t)(n)->nd_cr, \
+ sizeof (struct ucred)))
+
int
-nfsrv_mknod(nfsd, slp, procp, mrq)
- struct nfsrv_descript *nfsd;
- struct nfssvc_sock *slp;
- struct proc *procp;
- struct mbuf **mrq;
+nfsrv_writegather(
+ struct nfsrv_descript **ndp,
+ struct nfsrv_sock *slp,
+ vfs_context_t ctx,
+ mbuf_t *mrepp)
{
- struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
- struct mbuf *nam = nfsd->nd_nam;
- caddr_t dpos = nfsd->nd_dpos;
- struct ucred *cred = &nfsd->nd_cr;
- struct vattr va, dirfor, diraft;
- register struct vattr *vap = &va;
- register u_long *tl;
- struct nameidata nd;
- register long t1;
- caddr_t bpos;
- int error = 0, cache, len, dirfor_ret = 1, diraft_ret = 1;
- u_long major, minor;
- enum vtype vtyp;
- char *cp2;
- struct mbuf *mb, *mb2, *mreq;
- struct vnode *vp, *dirp = (struct vnode *)0;
- nfsfh_t nfh;
- fhandle_t *fhp;
- u_quad_t frev;
-
- nd.ni_cnd.cn_nameiop = 0;
- fhp = &nfh.fh_generic;
- nfsm_srvmtofh(fhp);
- nfsm_srvnamesiz(len);
- nd.ni_cnd.cn_cred = cred;
- nd.ni_cnd.cn_nameiop = CREATE;
- nd.ni_cnd.cn_flags = LOCKPARENT | LOCKLEAF | SAVESTART;
- error = nfs_namei(&nd, fhp, len, slp, nam, &md, &dpos,
- &dirp, procp, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
- if (dirp)
- dirfor_ret = VOP_GETATTR(dirp, &dirfor, cred, procp);
+ struct nfsrv_descript *nd, *wp, *owp, *swp;
+ struct nfs_export *nx;
+ struct nfs_export_options *nxo;
+ struct nfsrv_wg_delayhash *wpp;
+ uid_t saved_uid;
+ struct vnode_attr preattr, postattr;
+ int error, mlen, i, ioflags;
+ size_t tlen;
+ int preattrerr, postattrerr;
+ vnode_t vp;
+ mbuf_t m;
+ uio_t auio = NULL;
+ char *uio_bufp = NULL;
+ time_t cur_usec;
+ struct timeval now;
+ struct nfsm_chain *nmreq, nmrep;
+
+ error = 0;
+ preattrerr = postattrerr = ENOENT;
+ nfsm_chain_null(&nmrep);
+ vp = NULL;
+
+ *mrepp = NULL;
+ if (*ndp) {
+ nd = *ndp;
+ *ndp = NULL;
+ nmreq = &nd->nd_nmreq;
+ LIST_INIT(&nd->nd_coalesce);
+ nd->nd_mrep = NULL;
+ nd->nd_stable = NFS_WRITE_FILESYNC;
+ microuptime(&now);
+ cur_usec = now.tv_sec * 1000000 + now.tv_usec;
+ nd->nd_time = cur_usec +
+ ((nd->nd_vers == NFS_VER3) ? nfsrv_wg_delay_v3 : nfsrv_wg_delay);
+
+ /* Now, get the write header... */
+ nfsm_chain_get_fh_ptr(error, nmreq, nd->nd_vers, nd->nd_fh.nfh_fhp, nd->nd_fh.nfh_len);
+ /* XXX shouldn't we be checking for invalid FHs before doing any more work? */
+ nfsmerr_if(error);
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_chain_get_64(error, nmreq, nd->nd_off);
+ nfsm_chain_adv(error, nmreq, NFSX_UNSIGNED);
+ nfsm_chain_get_32(error, nmreq, nd->nd_stable);
+ } else {
+ nfsm_chain_adv(error, nmreq, NFSX_UNSIGNED);
+ nfsm_chain_get_32(error, nmreq, nd->nd_off);
+ nfsm_chain_adv(error, nmreq, NFSX_UNSIGNED);
+ if (nfsrv_async) {
+ nd->nd_stable = NFS_WRITE_UNSTABLE;
+ }
+ }
+ nfsm_chain_get_32(error, nmreq, nd->nd_len);
+ nfsmerr_if(error);
+ nd->nd_eoff = nd->nd_off + nd->nd_len;
+
+ if (nd->nd_len > 0) {
+ error = nfsm_chain_trim_data(nmreq, nd->nd_len, &mlen);
+ nfsmerr_if(error);
+ } else {
+ mlen = 0;
+ }
+
+ if ((nd->nd_len > NFSRV_MAXDATA) || (nd->nd_len < 0) || (mlen < nd->nd_len)) {
+ error = EIO;
+nfsmerr:
+ nd->nd_repstat = error;
+ error = nfsrv_rephead(nd, slp, &nmrep, NFSX_WCCDATA(nd->nd_vers));
+ if (!error) {
+ nd->nd_mrep = nmrep.nmc_mhead;
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_chain_add_wcc_data(error, nd, &nmrep,
+ preattrerr, &preattr, postattrerr, &postattr);
+ }
+ }
+ nfsm_chain_build_done(error, &nmrep);
+ nd->nd_time = 1;
+ }
+
+ /*
+ * Add this entry to the hash and time queues.
+ */
+ lck_mtx_lock(&slp->ns_wgmutex);
+ owp = NULL;
+ wp = slp->ns_tq.lh_first;
+ while (wp && wp->nd_time < nd->nd_time) {
+ owp = wp;
+ wp = wp->nd_tq.le_next;
+ }
+ if (owp) {
+ LIST_INSERT_AFTER(owp, nd, nd_tq);
+ } else {
+ LIST_INSERT_HEAD(&slp->ns_tq, nd, nd_tq);
+ }
+ if (!error) {
+ wpp = NWDELAYHASH(slp, nd->nd_fh.nfh_fid);
+ owp = NULL;
+ wp = wpp->lh_first;
+ while (wp && !nfsrv_fhmatch(&nd->nd_fh, &wp->nd_fh)) {
+ owp = wp;
+ wp = wp->nd_hash.le_next;
+ }
+ while (wp && (wp->nd_off < nd->nd_off) &&
+ nfsrv_fhmatch(&nd->nd_fh, &wp->nd_fh)) {
+ owp = wp;
+ wp = wp->nd_hash.le_next;
+ }
+ if (owp) {
+ LIST_INSERT_AFTER(owp, nd, nd_hash);
+ /*
+ * Search the hash list for overlapping entries and
+ * coalesce.
+ */
+ for (; nd && NFSW_CONTIG(owp, nd); nd = wp) {
+ wp = nd->nd_hash.le_next;
+ if (NFSW_SAMECRED(owp, nd)) {
+ nfsrv_wg_coalesce(owp, nd);
+ }
+ }
+ } else {
+ LIST_INSERT_HEAD(wpp, nd, nd_hash);
+ }
+ }
+ } else {
+ lck_mtx_lock(&slp->ns_wgmutex);
+ }
+
+ /*
+ * Now, do VNOP_WRITE()s for any one(s) that need to be done now
+ * and generate the associated reply mbuf list(s).
+ */
+loop1:
+ microuptime(&now);
+ cur_usec = now.tv_sec * 1000000 + now.tv_usec;
+ for (nd = slp->ns_tq.lh_first; nd; nd = owp) {
+ owp = nd->nd_tq.le_next;
+ if (nd->nd_time > cur_usec) {
+ break;
+ }
+ if (nd->nd_mrep) {
+ continue;
+ }
+ LIST_REMOVE(nd, nd_tq);
+ LIST_REMOVE(nd, nd_hash);
+ nmreq = &nd->nd_nmreq;
+ preattrerr = postattrerr = ENOENT;
+
+ /* save the incoming uid before mapping, */
+ /* for updating active user stats later */
+ saved_uid = kauth_cred_getuid(nd->nd_cr);
+
+ error = nfsrv_fhtovp(&nd->nd_fh, nd, &vp, &nx, &nxo);
+ if (!error) {
+ /* update per-export stats */
+ NFSStatAdd64(&nx->nx_stats.ops, 1);
+
+ error = nfsrv_credcheck(nd, ctx, nx, nxo);
+ if (error) {
+ vnode_put(vp);
+ }
+ }
+ if (!error) {
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_srv_pre_vattr_init(&preattr);
+ preattrerr = vnode_getattr(vp, &preattr, ctx);
+ }
+ if (vnode_vtype(vp) != VREG) {
+ if (nd->nd_vers == NFS_VER3) {
+ error = EINVAL;
+ } else {
+ error = (vnode_vtype(vp) == VDIR) ? EISDIR : EACCES;
+ }
+ }
+ } else {
+ vp = NULL;
+ }
+ if (!error) {
+ error = nfsrv_authorize(vp, NULL, KAUTH_VNODE_WRITE_DATA, ctx, nxo, 1);
+ }
+
+ if (nd->nd_stable == NFS_WRITE_UNSTABLE) {
+ ioflags = IO_NODELOCKED;
+ } else if (nd->nd_stable == NFS_WRITE_DATASYNC) {
+ ioflags = (IO_SYNC | IO_NODELOCKED);
+ } else {
+ ioflags = (IO_METASYNC | IO_SYNC | IO_NODELOCKED);
+ }
+
+ if (!error && ((nd->nd_eoff - nd->nd_off) > 0)) {
+ for (i = 0, m = nmreq->nmc_mhead; m; m = mbuf_next(m)) {
+ if (mbuf_len(m) > 0) {
+ i++;
+ }
+ }
+
+ MALLOC(uio_bufp, char *, UIO_SIZEOF(i), M_TEMP, M_WAITOK);
+ if (uio_bufp) {
+ auio = uio_createwithbuffer(i, nd->nd_off, UIO_SYSSPACE,
+ UIO_WRITE, uio_bufp, UIO_SIZEOF(i));
+ }
+ if (!uio_bufp || !auio) {
+ error = ENOMEM;
+ }
+ if (!error) {
+ for (m = nmreq->nmc_mhead; m; m = mbuf_next(m)) {
+ if ((tlen = mbuf_len(m)) > 0) {
+ uio_addiov(auio, CAST_USER_ADDR_T((caddr_t)mbuf_data(m)), tlen);
+ }
+ }
+ error = VNOP_WRITE(vp, auio, ioflags, ctx);
+ OSAddAtomic64(1, &nfsstats.srvvop_writes);
+
+ /* update export stats */
+ NFSStatAdd64(&nx->nx_stats.bytes_written, nd->nd_len);
+ /* update active user stats */
+ nfsrv_update_user_stat(nx, nd, saved_uid, 1, 0, nd->nd_len);
+
+#if CONFIG_FSE
+ if (nfsrv_fsevents_enabled && !error && need_fsevent(FSE_CONTENT_MODIFIED, vp)) {
+ nfsrv_modified(vp, ctx);
+ }
+#endif
+ }
+ if (uio_bufp) {
+ FREE(uio_bufp, M_TEMP);
+ uio_bufp = NULL;
+ }
+ }
+ if (vp) {
+ nfsm_srv_vattr_init(&postattr, nd->nd_vers);
+ postattrerr = vnode_getattr(vp, &postattr, ctx);
+ vnode_put(vp);
+ }
+
+ /*
+ * Loop around generating replies for all write rpcs that have
+ * now been completed.
+ */
+ swp = nd;
+ do {
+ if (error) {
+ nd->nd_repstat = error;
+ error = nfsrv_rephead(nd, slp, &nmrep, NFSX_WCCDATA(nd->nd_vers));
+ if (!error && (nd->nd_vers == NFS_VER3)) {
+ nfsm_chain_add_wcc_data(error, nd, &nmrep,
+ preattrerr, &preattr, postattrerr, &postattr);
+ }
+ } else {
+ nd->nd_repstat = error;
+ error = nfsrv_rephead(nd, slp, &nmrep, NFSX_PREOPATTR(nd->nd_vers) +
+ NFSX_POSTOPORFATTR(nd->nd_vers) + 2 * NFSX_UNSIGNED +
+ NFSX_WRITEVERF(nd->nd_vers));
+ if (!error && (nd->nd_vers == NFS_VER3)) {
+ nfsm_chain_add_wcc_data(error, nd, &nmrep,
+ preattrerr, &preattr, postattrerr, &postattr);
+ nfsm_chain_add_32(error, &nmrep, nd->nd_len);
+ nfsm_chain_add_32(error, &nmrep, nd->nd_stable);
+ /* write verifier */
+ nfsm_chain_add_32(error, &nmrep, nx->nx_exptime.tv_sec);
+ nfsm_chain_add_32(error, &nmrep, nx->nx_exptime.tv_usec);
+ } else if (!error) {
+ error = nfsm_chain_add_fattr(nd, &nmrep, &postattr);
+ }
+ }
+ nfsm_chain_build_done(error, &nmrep);
+ nfsmerr_if(error);
+ nd->nd_mrep = nmrep.nmc_mhead;
+
+ /*
+ * Done. Put it at the head of the timer queue so that
+ * the final phase can return the reply.
+ */
+ if (nd != swp) {
+ nd->nd_time = 1;
+ LIST_INSERT_HEAD(&slp->ns_tq, nd, nd_tq);
+ }
+ nd = swp->nd_coalesce.lh_first;
+ if (nd) {
+ LIST_REMOVE(nd, nd_tq);
+ }
+ } while (nd);
+ swp->nd_time = 1;
+ LIST_INSERT_HEAD(&slp->ns_tq, swp, nd_tq);
+ goto loop1;
+ }
+
+ /*
+ * Search for a reply to return.
+ */
+ for (nd = slp->ns_tq.lh_first; nd; nd = nd->nd_tq.le_next) {
+ if (nd->nd_mrep) {
+ LIST_REMOVE(nd, nd_tq);
+ *mrepp = nd->nd_mrep;
+ *ndp = nd;
+ break;
+ }
+ }
+ slp->ns_wgtime = slp->ns_tq.lh_first ? slp->ns_tq.lh_first->nd_time : 0;
+ lck_mtx_unlock(&slp->ns_wgmutex);
+
+ /*
+ * If we've just created a write pending gather,
+ * start the timer to check on it soon to make sure
+ * the write will be completed.
+ *
+ * Add/Remove the socket in the nfsrv_sockwg queue as needed.
+ */
+ lck_mtx_lock(&nfsd_mutex);
+ if (slp->ns_wgtime) {
+ if (slp->ns_wgq.tqe_next == SLPNOLIST) {
+ TAILQ_INSERT_HEAD(&nfsrv_sockwg, slp, ns_wgq);
+ }
+ if (!nfsrv_wg_timer_on) {
+ nfsrv_wg_timer_on = 1;
+ nfs_interval_timer_start(nfsrv_wg_timer_call,
+ NFSRV_WGATHERDELAY);
+ }
+ } else if (slp->ns_wgq.tqe_next != SLPNOLIST) {
+ TAILQ_REMOVE(&nfsrv_sockwg, slp, ns_wgq);
+ slp->ns_wgq.tqe_next = SLPNOLIST;
+ }
+ lck_mtx_unlock(&nfsd_mutex);
+
+ return 0;
+}
+
+/*
+ * Coalesce the write request nd into owp. To do this we must:
+ * - remove nd from the queues
+ * - merge nd->nd_nmreq into owp->nd_nmreq
+ * - update the nd_eoff and nd_stable for owp
+ * - put nd on owp's nd_coalesce list
+ */
+int
+nfsrv_wg_coalesce(struct nfsrv_descript *owp, struct nfsrv_descript *nd)
+{
+ int error;
+ off_t overlap;
+ mbuf_t mp, mpnext;
+ struct nfsrv_descript *p;
+
+ LIST_REMOVE(nd, nd_hash);
+ LIST_REMOVE(nd, nd_tq);
+ if (owp->nd_eoff < nd->nd_eoff) {
+ overlap = owp->nd_eoff - nd->nd_off;
+ if (overlap < 0) {
+ return EIO;
+ }
+ if (overlap > 0) {
+ mbuf_adj(nd->nd_nmreq.nmc_mhead, (int)overlap);
+ }
+ mp = owp->nd_nmreq.nmc_mhead;
+ while ((mpnext = mbuf_next(mp))) {
+ mp = mpnext;
+ }
+ error = mbuf_setnext(mp, nd->nd_nmreq.nmc_mhead);
+ if (error) {
+ return error;
+ }
+ owp->nd_eoff = nd->nd_eoff;
+ } else {
+ mbuf_freem(nd->nd_nmreq.nmc_mhead);
+ }
+ nd->nd_nmreq.nmc_mhead = NULL;
+ nd->nd_nmreq.nmc_mcur = NULL;
+ if (nd->nd_stable == NFS_WRITE_FILESYNC) {
+ owp->nd_stable = NFS_WRITE_FILESYNC;
+ } else if ((nd->nd_stable == NFS_WRITE_DATASYNC) &&
+ (owp->nd_stable == NFS_WRITE_UNSTABLE)) {
+ owp->nd_stable = NFS_WRITE_DATASYNC;
+ }
+ LIST_INSERT_HEAD(&owp->nd_coalesce, nd, nd_tq);
+
+ /*
+ * If nd had anything else coalesced into it, transfer them
+ * to owp, otherwise their replies will never get sent.
+ */
+ while ((p = nd->nd_coalesce.lh_first)) {
+ LIST_REMOVE(p, nd_tq);
+ LIST_INSERT_HEAD(&owp->nd_coalesce, p, nd_tq);
+ }
+ return 0;
+}
+
+/*
+ * Scan the write gathering queues for writes that need to be
+ * completed now.
+ */
+void
+nfsrv_wg_timer(__unused void *param0, __unused void *param1)
+{
+ struct timeval now;
+ time_t cur_usec, next_usec;
+ time_t interval;
+ struct nfsrv_sock *slp;
+ int writes_pending = 0;
+
+ microuptime(&now);
+ cur_usec = now.tv_sec * 1000000 + now.tv_usec;
+ next_usec = cur_usec + (NFSRV_WGATHERDELAY * 1000);
+
+ lck_mtx_lock(&nfsd_mutex);
+ TAILQ_FOREACH(slp, &nfsrv_sockwg, ns_wgq) {
+ if (slp->ns_wgtime) {
+ writes_pending++;
+ if (slp->ns_wgtime <= cur_usec) {
+ lck_rw_lock_exclusive(&slp->ns_rwlock);
+ slp->ns_flag |= SLP_DOWRITES;
+ lck_rw_done(&slp->ns_rwlock);
+ nfsrv_wakenfsd(slp);
+ continue;
+ }
+ if (slp->ns_wgtime < next_usec) {
+ next_usec = slp->ns_wgtime;
+ }
+ }
+ }
+
+ if (writes_pending == 0) {
+ nfsrv_wg_timer_on = 0;
+ lck_mtx_unlock(&nfsd_mutex);
+ return;
+ }
+ lck_mtx_unlock(&nfsd_mutex);
+
+ /*
+ * Return the number of msec to wait again
+ */
+ interval = (next_usec - cur_usec) / 1000;
+ if (interval < 1) {
+ interval = 1;
+ }
+ nfs_interval_timer_start(nfsrv_wg_timer_call, interval);
+}
+
+/*
+ * Sort the group list in increasing numerical order.
+ * (Insertion sort by Chris Torek, who was grossed out by the bubble sort
+ * that used to be here.)
+ */
+void
+nfsrv_group_sort(gid_t *list, int num)
+{
+ int i, j;
+ gid_t v;
+
+ /* Insertion sort. */
+ for (i = 1; i < num; i++) {
+ v = list[i];
+ /* find correct slot for value v, moving others up */
+ for (j = i; --j >= 0 && v < list[j];) {
+ list[j + 1] = list[j];
+ }
+ list[j + 1] = v;
+ }
+}
+
+/*
+ * nfs create service
+ * now does a truncate to 0 length via. setattr if it already exists
+ */
+int
+nfsrv_create(
+ struct nfsrv_descript *nd,
+ struct nfsrv_sock *slp,
+ vfs_context_t ctx,
+ mbuf_t *mrepp)
+{
+ struct vnode_attr dpreattr, dpostattr, postattr;
+ struct vnode_attr va, *vap = &va;
+ struct nameidata ni;
+ int error, dpreattrerr, dpostattrerr, postattrerr;
+ int how, exclusive_flag;
+ uint32_t len = 0, cnflags;
+ uint64_t rdev;
+ vnode_t vp, dvp, dirp;
+ struct nfs_filehandle nfh;
+ struct nfs_export *nx = NULL;
+ struct nfs_export_options *nxo = NULL;
+ u_quad_t tempsize;
+ u_char cverf[NFSX_V3CREATEVERF];
+ uid_t saved_uid;
+ struct nfsm_chain *nmreq, nmrep;
+
+ error = 0;
+ dpreattrerr = dpostattrerr = postattrerr = ENOENT;
+ nmreq = &nd->nd_nmreq;
+ nfsm_chain_null(&nmrep);
+ vp = dvp = dirp = NULL;
+ exclusive_flag = 0;
+ ni.ni_cnd.cn_nameiop = 0;
+ rdev = 0;
+
+ saved_uid = kauth_cred_getuid(nd->nd_cr);
+
+ nfsm_chain_get_fh_ptr(error, nmreq, nd->nd_vers, nfh.nfh_fhp, nfh.nfh_len);
+ nfsm_chain_get_32(error, nmreq, len);
+ nfsm_name_len_check(error, nd, len);
+ nfsmerr_if(error);
+
+ ni.ni_cnd.cn_nameiop = CREATE;
+#if CONFIG_TRIGGERS
+ ni.ni_op = OP_LINK;
+#endif
+ ni.ni_cnd.cn_flags = LOCKPARENT | LOCKLEAF;
+ ni.ni_cnd.cn_ndp = ∋
+
+ error = nfsm_chain_get_path_namei(nmreq, len, &ni);
+ if (!error) {
+ error = nfsrv_namei(nd, ctx, &ni, &nfh, &dirp, &nx, &nxo);
+ if (nx != NULL) {
+ /* update export stats */
+ NFSStatAdd64(&nx->nx_stats.ops, 1);
+
+ /* update active user stats */
+ nfsrv_update_user_stat(nx, nd, saved_uid, 1, 0, 0);
+ }
+ }
+ if (dirp) {
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_srv_pre_vattr_init(&dpreattr);
+ dpreattrerr = vnode_getattr(dirp, &dpreattr, ctx);
+ } else {
+ vnode_put(dirp);
+ dirp = NULL;
+ }
+ }
+
+ if (error) {
+ ni.ni_cnd.cn_nameiop = 0;
+ goto nfsmerr;
+ }
+
+ dvp = ni.ni_dvp;
+ vp = ni.ni_vp;
+ VATTR_INIT(vap);
+
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_chain_get_32(error, nmreq, how);
+ nfsmerr_if(error);
+ switch (how) {
+ case NFS_CREATE_GUARDED:
+ if (vp) {
+ error = EEXIST;
+ break;
+ }
+ OS_FALLTHROUGH;
+ case NFS_CREATE_UNCHECKED:
+ error = nfsm_chain_get_sattr(nd, nmreq, vap);
+ break;
+ case NFS_CREATE_EXCLUSIVE:
+ nfsm_chain_get_opaque(error, nmreq, NFSX_V3CREATEVERF, cverf);
+ exclusive_flag = 1;
+ if (vp == NULL) {
+ VATTR_SET(vap, va_mode, 0);
+ }
+ break;
+ }
+ ;
+ VATTR_SET(vap, va_type, VREG);
+ } else {
+ enum vtype v_type;
+
+ error = nfsm_chain_get_sattr(nd, nmreq, vap);
+ nfsmerr_if(error);
+ v_type = vap->va_type;
+ if (v_type == VNON) {
+ v_type = VREG;
+ }
+ VATTR_SET(vap, va_type, v_type);
+
+ switch (v_type) {
+ case VCHR:
+ case VBLK:
+ case VFIFO:
+ rdev = vap->va_data_size;
+ VATTR_CLEAR_ACTIVE(vap, va_data_size);
+ break;
+ default:
+ break;
+ }
+ ;
+ }
+ nfsmerr_if(error);
+
+ /*
+ * If it doesn't exist, create it
+ * otherwise just truncate to 0 length
+ * should I set the mode too ??
+ */
+ if (vp == NULL) {
+ kauth_acl_t xacl = NULL;
+
+ /* authorize before creating */
+ error = nfsrv_authorize(dvp, NULL, KAUTH_VNODE_ADD_FILE, ctx, nxo, 0);
+
+ /* construct ACL and handle inheritance */
+ if (!error) {
+ error = kauth_acl_inherit(dvp,
+ NULL,
+ &xacl,
+ 0 /* !isdir */,
+ ctx);
+
+ if (!error && xacl != NULL) {
+ VATTR_SET(vap, va_acl, xacl);
+ }
+ }
+ VATTR_CLEAR_ACTIVE(vap, va_data_size);
+ VATTR_CLEAR_ACTIVE(vap, va_access_time);
+ /*
+ * Server policy is to alway use the mapped rpc credential for
+ * file system object creation. This has the nice side effect of
+ * enforcing BSD creation semantics
+ */
+ VATTR_CLEAR_ACTIVE(vap, va_uid);
+ VATTR_CLEAR_ACTIVE(vap, va_gid);
+
+ /* validate new-file security information */
+ if (!error) {
+ error = vnode_authattr_new(dvp, vap, 0, ctx);
+ }
+
+ if (!error) {
+ error = vn_authorize_create(dvp, &ni.ni_cnd, vap, ctx, NULL);
+ if (error) {
+ error = EACCES;
+ }
+ }
+
+ if (vap->va_type == VREG || vap->va_type == VSOCK) {
+ if (!error) {
+ error = VNOP_CREATE(dvp, &vp, &ni.ni_cnd, vap, ctx);
+ }
+
+ if (!error && !VATTR_ALL_SUPPORTED(vap)) {
+ /*
+ * If some of the requested attributes weren't handled by the VNOP,
+ * use our fallback code.
+ */
+ error = vnode_setattr_fallback(vp, vap, ctx);
+ }
+
+ if (xacl != NULL) {
+ kauth_acl_free(xacl);
+ }
+
+ if (!error) {
+ if (exclusive_flag) {
+ exclusive_flag = 0;
+ VATTR_INIT(vap);
+ bcopy(cverf, (caddr_t)&vap->va_access_time,
+ NFSX_V3CREATEVERF);
+ VATTR_SET_ACTIVE(vap, va_access_time);
+ // skip authorization, as this is an
+ // NFS internal implementation detail.
+ error = vnode_setattr(vp, vap, ctx);
+ }
+
+#if CONFIG_FSE
+ if (nfsrv_fsevents_enabled && need_fsevent(FSE_CREATE_FILE, vp)) {
+ add_fsevent(FSE_CREATE_FILE, ctx,
+ FSE_ARG_VNODE, vp,
+ FSE_ARG_DONE);
+ }
+#endif
+ }
+ } else if (vap->va_type == VCHR || vap->va_type == VBLK ||
+ vap->va_type == VFIFO) {
+ if (vap->va_type == VCHR && rdev == 0xffffffff) {
+ VATTR_SET(vap, va_type, VFIFO);
+ }
+ if (vap->va_type != VFIFO) {
+ error = suser(nd->nd_cr, NULL);
+ nfsmerr_if(error);
+ }
+ VATTR_SET(vap, va_rdev, (dev_t)rdev);
+
+ error = VNOP_MKNOD(dvp, &vp, &ni.ni_cnd, vap, ctx);
+
+ if (xacl != NULL) {
+ kauth_acl_free(xacl);
+ }
+
+ nfsmerr_if(error);
+
+ if (vp) {
+ vnode_recycle(vp);
+ vnode_put(vp);
+ vp = NULL;
+ }
+ ni.ni_cnd.cn_nameiop = LOOKUP;
+#if CONFIG_TRIGGERS
+ ni.ni_op = OP_LOOKUP;
+#endif
+ ni.ni_cnd.cn_flags &= ~LOCKPARENT;
+ ni.ni_cnd.cn_context = ctx;
+ ni.ni_startdir = dvp;
+ ni.ni_usedvp = dvp;
+ ni.ni_rootdir = rootvnode;
+ cnflags = ni.ni_cnd.cn_flags; /* store in case we have to restore */
+ while ((error = lookup(&ni)) == ERECYCLE) {
+ ni.ni_cnd.cn_flags = cnflags;
+ ni.ni_cnd.cn_nameptr = ni.ni_cnd.cn_pnbuf;
+ ni.ni_usedvp = ni.ni_dvp = ni.ni_startdir = dvp;
+ }
+ if (!error) {
+ if (ni.ni_cnd.cn_flags & ISSYMLINK) {
+ error = EINVAL;
+ }
+ vp = ni.ni_vp;
+ }
+ nfsmerr_if(error);
+ } else {
+ error = ENXIO;
+ }
+ /*
+ * nameidone has to happen before we vnode_put(dvp)
+ * since it may need to release the fs_nodelock on the dvp
+ */
+ nameidone(&ni);
+ ni.ni_cnd.cn_nameiop = 0;
+
+ vnode_put(dvp);
+ } else {
+ /*
+ * nameidone has to happen before we vnode_put(dvp)
+ * since it may need to release the fs_nodelock on the dvp
+ */
+ nameidone(&ni);
+ ni.ni_cnd.cn_nameiop = 0;
+
+ vnode_put(dvp);
+
+#if CONFIG_MACF
+ if (!error && VATTR_IS_ACTIVE(vap, va_data_size)) {
+ /* NOTE: File has not been open for NFS case, so NOCRED for filecred */
+ error = mac_vnode_check_truncate(ctx, NOCRED, vp);
+ if (error) {
+ error = EACCES;
+ }
+ }
+#endif
+ if (!error && VATTR_IS_ACTIVE(vap, va_data_size)) {
+ error = nfsrv_authorize(vp, NULL, KAUTH_VNODE_WRITE_DATA,
+ ctx, nxo, 0);
+ if (!error) {
+ tempsize = vap->va_data_size;
+ VATTR_INIT(vap);
+ VATTR_SET(vap, va_data_size, tempsize);
+ error = vnode_setattr(vp, vap, ctx);
+ }
+ }
+ }
+ if (!error) {
+ error = nfsrv_vptofh(nx, nd->nd_vers, NULL, vp, ctx, &nfh);
+ if (!error) {
+ nfsm_srv_vattr_init(&postattr, nd->nd_vers);
+ postattrerr = vnode_getattr(vp, &postattr, ctx);
+ if (nd->nd_vers == NFS_VER2) {
+ error = postattrerr;
+ }
+ }
+ }
+ if (vp) {
+ vnode_put(vp);
+ }
+
+ if (nd->nd_vers == NFS_VER3) {
+ if (exclusive_flag && !error &&
+ bcmp(cverf, &postattr.va_access_time, NFSX_V3CREATEVERF)) {
+ error = EEXIST;
+ }
+ nfsm_srv_vattr_init(&dpostattr, NFS_VER3);
+ dpostattrerr = vnode_getattr(dirp, &dpostattr, ctx);
+ vnode_put(dirp);
+ dirp = NULL;
+ }
+
+nfsmerr:
+ /* assemble reply */
+ nd->nd_repstat = error;
+ error = nfsrv_rephead(nd, slp, &nmrep, NFSX_SRVFH(nd->nd_vers, &nfh) +
+ NFSX_FATTR(nd->nd_vers) + NFSX_WCCDATA(nd->nd_vers));
+ nfsmout_if(error);
+ *mrepp = nmrep.nmc_mhead;
+ nfsmout_on_status(nd, error);
+ if (nd->nd_vers == NFS_VER3) {
+ if (!nd->nd_repstat) {
+ nfsm_chain_add_postop_fh(error, &nmrep, nfh.nfh_fhp, nfh.nfh_len);
+ nfsm_chain_add_postop_attr(error, nd, &nmrep, postattrerr, &postattr);
+ }
+ nfsm_chain_add_wcc_data(error, nd, &nmrep,
+ dpreattrerr, &dpreattr, dpostattrerr, &dpostattr);
+ } else {
+ nfsm_chain_add_fh(error, &nmrep, NFS_VER2, nfh.nfh_fhp, nfh.nfh_len);
+ if (!error) {
+ error = nfsm_chain_add_fattr(nd, &nmrep, &postattr);
+ }
+ }
+nfsmout:
+ nfsm_chain_build_done(error, &nmrep);
+ if (ni.ni_cnd.cn_nameiop) {
+ /*
+ * nameidone has to happen before we vnode_put(dvp)
+ * since it may need to release the fs_nodelock on the dvp
+ */
+ nameidone(&ni);
+
+ if (vp) {
+ vnode_put(vp);
+ }
+ vnode_put(dvp);
+ }
+ if (dirp) {
+ vnode_put(dirp);
+ }
+ if (error) {
+ nfsm_chain_cleanup(&nmrep);
+ *mrepp = NULL;
+ }
+ return error;
+}
+
+/*
+ * nfs v3 mknod service
+ */
+int
+nfsrv_mknod(
+ struct nfsrv_descript *nd,
+ struct nfsrv_sock *slp,
+ vfs_context_t ctx,
+ mbuf_t *mrepp)
+{
+ struct vnode_attr dpreattr, dpostattr, postattr;
+ struct vnode_attr va, *vap = &va;
+ struct nameidata ni;
+ int error, dpreattrerr, dpostattrerr, postattrerr;
+ uint32_t len = 0, cnflags;
+ u_int32_t major = 0, minor = 0;
+ enum vtype vtyp;
+ nfstype nvtype;
+ vnode_t vp, dvp, dirp;
+ struct nfs_filehandle nfh;
+ struct nfs_export *nx = NULL;
+ struct nfs_export_options *nxo = NULL;
+ uid_t saved_uid;
+ kauth_acl_t xacl = NULL;
+ struct nfsm_chain *nmreq, nmrep;
+
+ error = 0;
+ dpreattrerr = dpostattrerr = postattrerr = ENOENT;
+ nmreq = &nd->nd_nmreq;
+ nfsm_chain_null(&nmrep);
+ vp = dvp = dirp = NULL;
+ ni.ni_cnd.cn_nameiop = 0;
+
+ saved_uid = kauth_cred_getuid(nd->nd_cr);
+
+ nfsm_chain_get_fh_ptr(error, nmreq, NFS_VER3, nfh.nfh_fhp, nfh.nfh_len);
+ nfsm_chain_get_32(error, nmreq, len);
+ nfsm_name_len_check(error, nd, len);
+ nfsmerr_if(error);
+
+ ni.ni_cnd.cn_nameiop = CREATE;
+#if CONFIG_TRIGGERS
+ ni.ni_op = OP_LINK;
+#endif
+ ni.ni_cnd.cn_flags = LOCKPARENT | LOCKLEAF;
+ ni.ni_cnd.cn_ndp = ∋
+ error = nfsm_chain_get_path_namei(nmreq, len, &ni);
+ if (!error) {
+ error = nfsrv_namei(nd, ctx, &ni, &nfh, &dirp, &nx, &nxo);
+ if (nx != NULL) {
+ /* update export stats */
+ NFSStatAdd64(&nx->nx_stats.ops, 1);
+
+ /* update active user stats */
+ nfsrv_update_user_stat(nx, nd, saved_uid, 1, 0, 0);
+ }
+ }
+ if (dirp) {
+ nfsm_srv_pre_vattr_init(&dpreattr);
+ dpreattrerr = vnode_getattr(dirp, &dpreattr, ctx);
+ }
+ if (error) {
+ ni.ni_cnd.cn_nameiop = 0;
+ goto nfsmerr;
+ }
+
+ dvp = ni.ni_dvp;
+ vp = ni.ni_vp;
+
+ nfsm_chain_get_32(error, nmreq, nvtype);
+ nfsmerr_if(error);
+ vtyp = nfstov_type(nvtype, NFS_VER3);
+ if (!error && (vtyp != VCHR) && (vtyp != VBLK) && (vtyp != VSOCK) && (vtyp != VFIFO)) {
+ error = NFSERR_BADTYPE;
+ goto out;
+ }
+
+ VATTR_INIT(vap);
+ error = nfsm_chain_get_sattr(nd, nmreq, vap);
+ if ((vtyp == VCHR) || (vtyp == VBLK)) {
+ nfsm_chain_get_32(error, nmreq, major);
+ nfsm_chain_get_32(error, nmreq, minor);
+ nfsmerr_if(error);
+ VATTR_SET(vap, va_rdev, makedev(major, minor));
+ }
+ nfsmerr_if(error);
+
+ /*
+ * If it doesn't exist, create it.
+ */
+ if (vp) {
+ error = EEXIST;
+ goto out;
+ }
+ VATTR_SET(vap, va_type, vtyp);
+
+ /* authorize before creating */
+ error = nfsrv_authorize(dvp, NULL, KAUTH_VNODE_ADD_FILE, ctx, nxo, 0);
+
+ /* construct ACL and handle inheritance */
+ if (!error) {
+ error = kauth_acl_inherit(dvp,
+ NULL,
+ &xacl,
+ 0 /* !isdir */,
+ ctx);
+
+ if (!error && xacl != NULL) {
+ VATTR_SET(vap, va_acl, xacl);
+ }
+ }
+ VATTR_CLEAR_ACTIVE(vap, va_data_size);
+ VATTR_CLEAR_ACTIVE(vap, va_access_time);
+ /*
+ * Server policy is to alway use the mapped rpc credential for
+ * file system object creation. This has the nice side effect of
+ * enforcing BSD creation semantics
+ */
+ VATTR_CLEAR_ACTIVE(vap, va_uid);
+ VATTR_CLEAR_ACTIVE(vap, va_gid);
+
+ /* validate new-file security information */
+ if (!error) {
+ error = vnode_authattr_new(dvp, vap, 0, ctx);
+ }
+ if (!error) {
+ error = vn_authorize_create(dvp, &ni.ni_cnd, vap, ctx, NULL);
+ if (error) {
+ error = EACCES;
+ }
+ }
+ if (error) {
+ goto out1;
+ }
+
+ if (vtyp == VSOCK) {
+ error = VNOP_CREATE(dvp, &vp, &ni.ni_cnd, vap, ctx);
+
+ if (!error && !VATTR_ALL_SUPPORTED(vap)) {
+ /*
+ * If some of the requested attributes weren't handled by the VNOP,
+ * use our fallback code.
+ */
+ error = vnode_setattr_fallback(vp, vap, ctx);
+ }
+ } else {
+ if (vtyp != VFIFO && (error = suser(nd->nd_cr, (u_short *)0))) {
+ goto out1;
+ }
+ if ((error = VNOP_MKNOD(dvp, &vp, &ni.ni_cnd, vap, ctx))) {
+ goto out1;
+ }
+ if (vp) {
+ vnode_recycle(vp);
+ vnode_put(vp);
+ vp = NULL;
+ }
+ ni.ni_cnd.cn_nameiop = LOOKUP;
+#if CONFIG_TRIGGERS
+ ni.ni_op = OP_LOOKUP;
+#endif
+ ni.ni_cnd.cn_flags &= ~LOCKPARENT;
+ ni.ni_cnd.cn_context = vfs_context_current();
+ ni.ni_startdir = dvp;
+ ni.ni_usedvp = dvp;
+ ni.ni_rootdir = rootvnode;
+ cnflags = ni.ni_cnd.cn_flags; /* store in case we have to restore */
+ while ((error = lookup(&ni)) == ERECYCLE) {
+ ni.ni_cnd.cn_flags = cnflags;
+ ni.ni_cnd.cn_nameptr = ni.ni_cnd.cn_pnbuf;
+ ni.ni_usedvp = ni.ni_dvp = ni.ni_startdir = dvp;
+ }
+ if (!error) {
+ vp = ni.ni_vp;
+ if (ni.ni_cnd.cn_flags & ISSYMLINK) {
+ error = EINVAL;
+ }
+ }
+ }
+out1:
+ if (xacl != NULL) {
+ kauth_acl_free(xacl);
+ }
+out:
+ /*
+ * nameidone has to happen before we vnode_put(dvp)
+ * since it may need to release the fs_nodelock on the dvp
+ */
+ nameidone(&ni);
+ ni.ni_cnd.cn_nameiop = 0;
+
+ vnode_put(dvp);
+ dvp = NULL;
+
+ if (!error) {
+ error = nfsrv_vptofh(nx, NFS_VER3, NULL, vp, ctx, &nfh);
+ if (!error) {
+ nfsm_srv_vattr_init(&postattr, NFS_VER3);
+ postattrerr = vnode_getattr(vp, &postattr, ctx);
+ }
+ }
+ if (vp) {
+ vnode_put(vp);
+ vp = NULL;
+ }
+
+ nfsm_srv_vattr_init(&dpostattr, NFS_VER3);
+ dpostattrerr = vnode_getattr(dirp, &dpostattr, ctx);
+ vnode_put(dirp);
+ dirp = NULL;
+
+nfsmerr:
+ /* assemble reply */
+ nd->nd_repstat = error;
+ error = nfsrv_rephead(nd, slp, &nmrep, NFSX_SRVFH(NFS_VER3, &nfh) +
+ NFSX_POSTOPATTR(NFS_VER3) + NFSX_WCCDATA(NFS_VER3));
+ nfsmout_if(error);
+ *mrepp = nmrep.nmc_mhead;
+ nfsmout_on_status(nd, error);
+ if (!nd->nd_repstat) {
+ nfsm_chain_add_postop_fh(error, &nmrep, nfh.nfh_fhp, nfh.nfh_len);
+ nfsm_chain_add_postop_attr(error, nd, &nmrep, postattrerr, &postattr);
+ }
+ nfsm_chain_add_wcc_data(error, nd, &nmrep,
+ dpreattrerr, &dpreattr, dpostattrerr, &dpostattr);
+nfsmout:
+ nfsm_chain_build_done(error, &nmrep);
+ if (ni.ni_cnd.cn_nameiop) {
+ /*
+ * nameidone has to happen before we vnode_put(dvp)
+ * since it may need to release the fs_nodelock on the dvp
+ */
+ nameidone(&ni);
+
+ if (vp) {
+ vnode_put(vp);
+ }
+ vnode_put(dvp);
+ }
+ if (dvp) {
+ vnode_put(dvp);
+ }
+ if (vp) {
+ vnode_put(vp);
+ }
+ if (dirp) {
+ vnode_put(dirp);
+ }
+ if (error) {
+ nfsm_chain_cleanup(&nmrep);
+ *mrepp = NULL;
+ }
+ return error;
+}
+
+/*
+ * nfs remove service
+ */
+int
+nfsrv_remove(
+ struct nfsrv_descript *nd,
+ struct nfsrv_sock *slp,
+ vfs_context_t ctx,
+ mbuf_t *mrepp)
+{
+ struct nameidata ni;
+ int error, dpreattrerr, dpostattrerr;
+ uint32_t len = 0;
+ uid_t saved_uid;
+ vnode_t vp, dvp, dirp = NULL;
+ struct vnode_attr dpreattr, dpostattr;
+ struct nfs_filehandle nfh;
+ struct nfs_export *nx = NULL;
+ struct nfs_export_options *nxo = NULL;
+ struct nfsm_chain *nmreq, nmrep;
+
+ error = 0;
+ dpreattrerr = dpostattrerr = ENOENT;
+ saved_uid = kauth_cred_getuid(nd->nd_cr);
+ dvp = vp = dirp = NULL;
+ nmreq = &nd->nd_nmreq;
+ nfsm_chain_null(&nmrep);
+
+ nfsm_chain_get_fh_ptr(error, nmreq, nd->nd_vers, nfh.nfh_fhp, nfh.nfh_len);
+ nfsm_chain_get_32(error, nmreq, len);
+ nfsm_name_len_check(error, nd, len);
+ nfsmerr_if(error);
+
+ ni.ni_cnd.cn_nameiop = DELETE;
+#if CONFIG_TRIGGERS
+ ni.ni_op = OP_UNLINK;
+#endif
+ ni.ni_cnd.cn_flags = LOCKPARENT | LOCKLEAF;
+ ni.ni_cnd.cn_ndp = ∋
+ error = nfsm_chain_get_path_namei(nmreq, len, &ni);
+ if (!error) {
+ error = nfsrv_namei(nd, ctx, &ni, &nfh, &dirp, &nx, &nxo);
+ if (nx != NULL) {
+ /* update export stats */
+ NFSStatAdd64(&nx->nx_stats.ops, 1);
+
+ /* update active user stats */
+ nfsrv_update_user_stat(nx, nd, saved_uid, 1, 0, 0);
+ }
+ }
+ if (dirp) {
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_srv_pre_vattr_init(&dpreattr);
+ dpreattrerr = vnode_getattr(dirp, &dpreattr, ctx);
+ } else {
+ vnode_put(dirp);
+ dirp = NULL;
+ }
+ }
+
+ if (!error) {
+ dvp = ni.ni_dvp;
+ vp = ni.ni_vp;
+
+ if (vnode_vtype(vp) == VDIR) {
+ error = EPERM; /* POSIX */
+ } else if (vnode_isvroot(vp)) {
+ /*
+ * The root of a mounted filesystem cannot be deleted.
+ */
+ error = EBUSY;
+ } else {
+ error = nfsrv_authorize(vp, dvp, KAUTH_VNODE_DELETE, ctx, nxo, 0);
+ }
+
+ if (!error) {
+ error = vn_authorize_unlink(dvp, vp, &ni.ni_cnd, ctx, NULL);
+ if (error) {
+ error = EACCES;
+ }
+ }
+
+ if (!error) {
+#if CONFIG_FSE
+ char *path = NULL;
+ int plen = 0;
+ fse_info finfo;
+
+ if (nfsrv_fsevents_enabled && need_fsevent(FSE_DELETE, dvp)) {
+ plen = MAXPATHLEN;
+ if ((path = get_pathbuff()) && !vn_getpath(vp, path, &plen)) {
+ get_fse_info(vp, &finfo, ctx);
+ } else if (path) {
+ release_pathbuff(path);
+ path = NULL;
+ }
+ }
+#endif
+ error = VNOP_REMOVE(dvp, vp, &ni.ni_cnd, 0, ctx);
+
+#if CONFIG_FSE
+ if (path) {
+ if (!error) {
+ add_fsevent(FSE_DELETE, ctx,
+ FSE_ARG_STRING, plen, path,
+ FSE_ARG_FINFO, &finfo,
+ FSE_ARG_DONE);
+ }
+ release_pathbuff(path);
+ }
+#endif
+ }
+
+ /*
+ * nameidone has to happen before we vnode_put(dvp)
+ * since it may need to release the fs_nodelock on the dvp
+ */
+ nameidone(&ni);
+
+ vnode_put(vp);
+ vnode_put(dvp);
+ }
+
+nfsmerr:
+ if (dirp) {
+ nfsm_srv_vattr_init(&dpostattr, nd->nd_vers);
+ dpostattrerr = vnode_getattr(dirp, &dpostattr, ctx);
+ vnode_put(dirp);
+ }
+
+ /* assemble reply */
+ nd->nd_repstat = error;
+ error = nfsrv_rephead(nd, slp, &nmrep, NFSX_WCCDATA(nd->nd_vers));
+ nfsmout_if(error);
+ *mrepp = nmrep.nmc_mhead;
+ nfsmout_on_status(nd, error);
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_chain_add_wcc_data(error, nd, &nmrep,
+ dpreattrerr, &dpreattr, dpostattrerr, &dpostattr);
+ }
+nfsmout:
+ nfsm_chain_build_done(error, &nmrep);
+ if (error) {
+ nfsm_chain_cleanup(&nmrep);
+ *mrepp = NULL;
+ }
+ return error;
+}
+
+/*
+ * nfs rename service
+ */
+int
+nfsrv_rename(
+ struct nfsrv_descript *nd,
+ struct nfsrv_sock *slp,
+ vfs_context_t ctx,
+ mbuf_t *mrepp)
+{
+ kauth_cred_t saved_cred = NULL;
+ uid_t saved_uid;
+ int error;
+ uint32_t fromlen, tolen;
+ int fdpreattrerr, fdpostattrerr;
+ int tdpreattrerr, tdpostattrerr;
+ char *frompath = NULL, *topath = NULL;
+ struct nameidata fromni, toni;
+ vnode_t fvp, tvp, tdvp, fdvp, fdirp, tdirp;
+ struct vnode_attr fdpreattr, fdpostattr;
+ struct vnode_attr tdpreattr, tdpostattr;
+ struct nfs_filehandle fnfh, tnfh;
+ struct nfs_export *fnx, *tnx;
+ struct nfs_export_options *fnxo, *tnxo;
+ enum vtype fvtype, tvtype;
+ int holding_mntlock;
+ mount_t locked_mp;
+ struct nfsm_chain *nmreq, nmrep;
+ char *from_name, *to_name;
+#if CONFIG_FSE
+ int from_len = 0, to_len = 0;
+ fse_info from_finfo, to_finfo;
+#endif
+ u_char didstats = 0;
+ const char *oname;
+
+ error = 0;
+ fdpreattrerr = fdpostattrerr = ENOENT;
+ tdpreattrerr = tdpostattrerr = ENOENT;
+ saved_uid = kauth_cred_getuid(nd->nd_cr);
+ fromlen = tolen = 0;
+ frompath = topath = NULL;
+ fdirp = tdirp = NULL;
+ nmreq = &nd->nd_nmreq;
+ nfsm_chain_null(&nmrep);
+
+ /*
+ * these need to be set before calling any code
+ * that they may take us out through the error path.
+ */
+ holding_mntlock = 0;
+ fvp = tvp = NULL;
+ fdvp = tdvp = NULL;
+ locked_mp = NULL;
+
+ nfsm_chain_get_fh_ptr(error, nmreq, nd->nd_vers, fnfh.nfh_fhp, fnfh.nfh_len);
+ nfsm_chain_get_32(error, nmreq, fromlen);
+ nfsm_name_len_check(error, nd, fromlen);
+ nfsmerr_if(error);
+ error = nfsm_chain_get_path_namei(nmreq, fromlen, &fromni);
+ nfsmerr_if(error);
+ frompath = fromni.ni_cnd.cn_pnbuf;
+
+ nfsm_chain_get_fh_ptr(error, nmreq, nd->nd_vers, tnfh.nfh_fhp, tnfh.nfh_len);
+ nfsm_chain_get_32(error, nmreq, tolen);
+ nfsm_name_len_check(error, nd, tolen);
+ nfsmerr_if(error);
+ error = nfsm_chain_get_path_namei(nmreq, tolen, &toni);
+ nfsmerr_if(error);
+ topath = toni.ni_cnd.cn_pnbuf;
+
+ /*
+ * Remember our original uid so that we can reset cr_uid before
+ * the second nfsrv_namei() call, in case it is remapped.
+ */
+ saved_cred = nd->nd_cr;
+ kauth_cred_ref(saved_cred);
+retry:
+ fromni.ni_cnd.cn_nameiop = DELETE;
+#if CONFIG_TRIGGERS
+ fromni.ni_op = OP_UNLINK;
+#endif
+ fromni.ni_cnd.cn_flags = WANTPARENT;
+
+ fromni.ni_cnd.cn_pnbuf = frompath;
+ frompath = NULL;
+ fromni.ni_cnd.cn_pnlen = MAXPATHLEN;
+ fromni.ni_cnd.cn_flags |= HASBUF;
+ fromni.ni_cnd.cn_ndp = &fromni;
+
+ error = nfsrv_namei(nd, ctx, &fromni, &fnfh, &fdirp, &fnx, &fnxo);
+ if (error) {
+ goto out;
+ }
+ fdvp = fromni.ni_dvp;
+ fvp = fromni.ni_vp;
+
+ if (fdirp) {
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_srv_pre_vattr_init(&fdpreattr);
+ fdpreattrerr = vnode_getattr(fdirp, &fdpreattr, ctx);
+ } else {
+ vnode_put(fdirp);
+ fdirp = NULL;
+ }
+ }
+ fvtype = vnode_vtype(fvp);
+
+ /* reset credential if it was remapped */
+ if (nd->nd_cr != saved_cred) {
+ kauth_cred_ref(saved_cred);
+ kauth_cred_unref(&nd->nd_cr);
+ ctx->vc_ucred = nd->nd_cr = saved_cred;
+ }
+
+ toni.ni_cnd.cn_nameiop = RENAME;
+#if CONFIG_TRIGGERS
+ toni.ni_op = OP_RENAME;
+#endif
+ toni.ni_cnd.cn_flags = WANTPARENT;
+
+ toni.ni_cnd.cn_pnbuf = topath;
+ topath = NULL;
+ toni.ni_cnd.cn_pnlen = MAXPATHLEN;
+ toni.ni_cnd.cn_flags |= HASBUF;
+ toni.ni_cnd.cn_ndp = &toni;
+
+ if (fvtype == VDIR) {
+ toni.ni_cnd.cn_flags |= WILLBEDIR;
+ }
+
+ tnx = NULL;
+ error = nfsrv_namei(nd, ctx, &toni, &tnfh, &tdirp, &tnx, &tnxo);
+ if (error) {
+ /*
+ * Translate error code for rename("dir1", "dir2/.").
+ */
+ if (error == EISDIR && fvtype == VDIR) {
+ if (nd->nd_vers == NFS_VER3) {
+ error = EINVAL;
+ } else {
+ error = ENOTEMPTY;
+ }
+ }
+ goto out;
+ }
+ tdvp = toni.ni_dvp;
+ tvp = toni.ni_vp;
+
+ if (!didstats) {
+ /* update export stats once only */
+ if (tnx != NULL) {
+ /* update export stats */
+ NFSStatAdd64(&tnx->nx_stats.ops, 1);
+
+ /* update active user stats */
+ nfsrv_update_user_stat(tnx, nd, saved_uid, 1, 0, 0);
+ didstats = 1;
+ }
+ }
+
+ if (tdirp) {
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_srv_pre_vattr_init(&tdpreattr);
+ tdpreattrerr = vnode_getattr(tdirp, &tdpreattr, ctx);
+ } else {
+ vnode_put(tdirp);
+ tdirp = NULL;
+ }
+ }
+
+ if (tvp != NULL) {
+ tvtype = vnode_vtype(tvp);
+
+ if (fvtype == VDIR && tvtype != VDIR) {
+ if (nd->nd_vers == NFS_VER3) {
+ error = EEXIST;
+ } else {
+ error = EISDIR;
+ }
+ goto out;
+ } else if (fvtype != VDIR && tvtype == VDIR) {
+ if (nd->nd_vers == NFS_VER3) {
+ error = EEXIST;
+ } else {
+ error = ENOTDIR;
+ }
+ goto out;
+ }
+ if (tvtype == VDIR && vnode_mountedhere(tvp)) {
+ if (nd->nd_vers == NFS_VER3) {
+ error = EXDEV;
+ } else {
+ error = ENOTEMPTY;
+ }
+ goto out;
+ }
+ }
+ if (fvp == tdvp) {
+ if (nd->nd_vers == NFS_VER3) {
+ error = EINVAL;
+ } else {
+ error = ENOTEMPTY;
+ }
+ goto out;
+ }
+
+ /*
+ * Authorization.
+ *
+ * If tvp is a directory and not the same as fdvp, or tdvp is not the same as fdvp,
+ * the node is moving between directories and we need rights to remove from the
+ * old and add to the new.
+ *
+ * If tvp already exists and is not a directory, we need to be allowed to delete it.
+ *
+ * Note that we do not inherit when renaming. XXX this needs to be revisited to
+ * implement the deferred-inherit bit.
+ */
+ {
+ int moving = 0;
+
+ error = 0;
+ if ((tvp != NULL) && vnode_isdir(tvp)) {
+ if (tvp != fdvp) {
+ moving = 1;
+ }
+ } else if (tdvp != fdvp) {
+ moving = 1;
+ }
+ if (moving) {
+ /* moving out of fdvp, must have delete rights */
+ if ((error = nfsrv_authorize(fvp, fdvp, KAUTH_VNODE_DELETE, ctx, fnxo, 0)) != 0) {
+ goto auth_exit;
+ }
+ /* moving into tdvp or tvp, must have rights to add */
+ if ((error = nfsrv_authorize(((tvp != NULL) && vnode_isdir(tvp)) ? tvp : tdvp,
+ NULL,
+ vnode_isdir(fvp) ? KAUTH_VNODE_ADD_SUBDIRECTORY : KAUTH_VNODE_ADD_FILE,
+ ctx, tnxo, 0)) != 0) {
+ goto auth_exit;
+ }
+ } else {
+ /* node staying in same directory, must be allowed to add new name */
+ if ((error = nfsrv_authorize(fdvp, NULL,
+ vnode_isdir(fvp) ? KAUTH_VNODE_ADD_SUBDIRECTORY : KAUTH_VNODE_ADD_FILE,
+ ctx, fnxo, 0)) != 0) {
+ goto auth_exit;
+ }
+ }
+ /* overwriting tvp */
+ if ((tvp != NULL) && !vnode_isdir(tvp) &&
+ ((error = nfsrv_authorize(tvp, tdvp, KAUTH_VNODE_DELETE, ctx, tnxo, 0)) != 0)) {
+ goto auth_exit;
+ }
+
+ if (!error &&
+ ((error = vn_authorize_rename(fdvp, fvp, &fromni.ni_cnd, tdvp, tvp, &toni.ni_cnd, ctx, NULL)) != 0)) {
+ if (error) {
+ error = EACCES;
+ }
+ goto auth_exit;
+ }
+ /* XXX more checks? */
+
+auth_exit:
+ /* authorization denied */
+ if (error != 0) {
+ goto out;
+ }
+ }
+
+ if ((vnode_mount(fvp) != vnode_mount(tdvp)) ||
+ (tvp && (vnode_mount(fvp) != vnode_mount(tvp)))) {
+ if (nd->nd_vers == NFS_VER3) {
+ error = EXDEV;
+ } else {
+ error = ENOTEMPTY;
+ }
+ goto out;
+ }
+ /*
+ * The following edge case is caught here:
+ * (to cannot be a descendent of from)
+ *
+ * o fdvp
+ * /
+ * /
+ * o fvp
+ * \
+ * \
+ * o tdvp
+ * /
+ * /
+ * o tvp
+ */
+ if (tdvp->v_parent == fvp) {
+ if (nd->nd_vers == NFS_VER3) {
+ error = EXDEV;
+ } else {
+ error = ENOTEMPTY;
+ }
+ goto out;
+ }
+ if (fvtype == VDIR && vnode_mountedhere(fvp)) {
+ if (nd->nd_vers == NFS_VER3) {
+ error = EXDEV;
+ } else {
+ error = ENOTEMPTY;
+ }
+ goto out;
+ }
+ /*
+ * If source is the same as the destination (that is the
+ * same vnode) then there is nothing to do...
+ * EXCEPT if the underlying file system supports case
+ * insensitivity and is case preserving. In this case
+ * the file system needs to handle the special case of
+ * getting the same vnode as target (fvp) and source (tvp).
+ *
+ * Only file systems that support pathconf selectors _PC_CASE_SENSITIVE
+ * and _PC_CASE_PRESERVING can have this exception, and they need to
+ * handle the special case of getting the same vnode as target and
+ * source. NOTE: Then the target is unlocked going into vnop_rename,
+ * so not to cause locking problems. There is a single reference on tvp.
+ *
+ * NOTE - that fvp == tvp also occurs if they are hard linked - NOTE
+ * that correct behaviour then is just to remove the source (link)
+ */
+ if ((fvp == tvp) && (fdvp == tdvp)) {
+ if (fromni.ni_cnd.cn_namelen == toni.ni_cnd.cn_namelen &&
+ !bcmp(fromni.ni_cnd.cn_nameptr, toni.ni_cnd.cn_nameptr,
+ fromni.ni_cnd.cn_namelen)) {
+ goto out;
+ }
+ }
+
+ if (holding_mntlock && vnode_mount(fvp) != locked_mp) {
+ /*
+ * we're holding a reference and lock
+ * on locked_mp, but it no longer matches
+ * what we want to do... so drop our hold
+ */
+ mount_unlock_renames(locked_mp);
+ mount_drop(locked_mp, 0);
+ holding_mntlock = 0;
+ }
+ if (tdvp != fdvp && fvtype == VDIR) {
+ /*
+ * serialize renames that re-shape
+ * the tree... if holding_mntlock is
+ * set, then we're ready to go...
+ * otherwise we
+ * first need to drop the iocounts
+ * we picked up, second take the
+ * lock to serialize the access,
+ * then finally start the lookup
+ * process over with the lock held
+ */
+ if (!holding_mntlock) {
+ /*
+ * need to grab a reference on
+ * the mount point before we
+ * drop all the iocounts... once
+ * the iocounts are gone, the mount
+ * could follow
+ */
+ locked_mp = vnode_mount(fvp);
+ mount_ref(locked_mp, 0);
+
+ /* make a copy of to path to pass to nfsrv_namei() again */
+ topath = zalloc(ZV_NAMEI);
+ bcopy(toni.ni_cnd.cn_pnbuf, topath, tolen + 1);
+
+ /*
+ * nameidone has to happen before we vnode_put(tdvp)
+ * since it may need to release the fs_nodelock on the tdvp
+ */
+ nameidone(&toni);
+
+ if (tvp) {
+ vnode_put(tvp);
+ }
+ vnode_put(tdvp);
+
+ /* make a copy of from path to pass to nfsrv_namei() again */
+ frompath = zalloc(ZV_NAMEI);
+ bcopy(fromni.ni_cnd.cn_pnbuf, frompath, fromlen + 1);
+
+ /*
+ * nameidone has to happen before we vnode_put(fdvp)
+ * since it may need to release the fs_nodelock on the fdvp
+ */
+ nameidone(&fromni);
+
+ vnode_put(fvp);
+ vnode_put(fdvp);
+
+ if (fdirp) {
+ vnode_put(fdirp);
+ fdirp = NULL;
+ }
+ if (tdirp) {
+ vnode_put(tdirp);
+ tdirp = NULL;
+ }
+ mount_lock_renames(locked_mp);
+ holding_mntlock = 1;
+
+ fvp = tvp = NULL;
+ fdvp = tdvp = NULL;
+
+ fdpreattrerr = tdpreattrerr = ENOENT;
+
+ if (!topath || !frompath) {
+ /* we couldn't allocate a path, so bail */
+ error = ENOMEM;
+ goto out;
+ }
+
+ /* reset credential if it was remapped */
+ if (nd->nd_cr != saved_cred) {
+ kauth_cred_ref(saved_cred);
+ kauth_cred_unref(&nd->nd_cr);
+ ctx->vc_ucred = nd->nd_cr = saved_cred;
+ }
+
+ goto retry;
+ }
+ } else {
+ /*
+ * when we dropped the iocounts to take
+ * the lock, we allowed the identity of
+ * the various vnodes to change... if they did,
+ * we may no longer be dealing with a rename
+ * that reshapes the tree... once we're holding
+ * the iocounts, the vnodes can't change type
+ * so we're free to drop the lock at this point
+ * and continue on
+ */
+ if (holding_mntlock) {
+ mount_unlock_renames(locked_mp);
+ mount_drop(locked_mp, 0);
+ holding_mntlock = 0;
+ }
+ }
+
+ // save these off so we can later verify that fvp is the same
+ vnode_t oparent;
+ oname = fvp->v_name;
+ oparent = fvp->v_parent;
+
+ /*
+ * If generating an fsevent, then
+ * stash any pre-rename info we may need.
+ */
+#if CONFIG_FSE
+ if (nfsrv_fsevents_enabled && need_fsevent(FSE_RENAME, fvp)) {
+ int from_truncated = 0, to_truncated = 0;
+
+ get_fse_info(fvp, &from_finfo, ctx);
+ if (tvp) {
+ get_fse_info(tvp, &to_finfo, ctx);
+ }
+
+ from_name = get_pathbuff();
+ if (from_name) {
+ from_len = safe_getpath(fdvp, fromni.ni_cnd.cn_nameptr, from_name, MAXPATHLEN, &from_truncated);
+ }
+
+ to_name = from_name ? get_pathbuff() : NULL;
+ if (to_name) {
+ to_len = safe_getpath(tdvp, toni.ni_cnd.cn_nameptr, to_name, MAXPATHLEN, &to_truncated);
+ }
+
+ if (from_truncated || to_truncated) {
+ from_finfo.mode |= FSE_TRUNCATED_PATH;
+ }
+ } else {
+ from_name = NULL;
+ to_name = NULL;
+ }
+#else /* CONFIG_FSE */
+ from_name = NULL;
+ to_name = NULL;
+#endif /* CONFIG_FSE */
+
+ error = VNOP_RENAME(fromni.ni_dvp, fromni.ni_vp, &fromni.ni_cnd,
+ toni.ni_dvp, toni.ni_vp, &toni.ni_cnd, ctx);
+ /*
+ * fix up name & parent pointers. note that we first
+ * check that fvp has the same name/parent pointers it
+ * had before the rename call... this is a 'weak' check
+ * at best...
+ */
+ if (oname == fvp->v_name && oparent == fvp->v_parent) {
+ int update_flags;
+ update_flags = VNODE_UPDATE_NAME;
+ if (fdvp != tdvp) {
+ update_flags |= VNODE_UPDATE_PARENT;
+ }
+ vnode_update_identity(fvp, tdvp, toni.ni_cnd.cn_nameptr,
+ toni.ni_cnd.cn_namelen, toni.ni_cnd.cn_hash, update_flags);
+ }
+
+ /*
+ * If the rename is OK and we've got the paths
+ * then add an fsevent.
+ */
+#if CONFIG_FSE
+ if (nfsrv_fsevents_enabled && !error && from_name && to_name) {
+ if (tvp) {
+ add_fsevent(FSE_RENAME, ctx,
+ FSE_ARG_STRING, from_len, from_name,
+ FSE_ARG_FINFO, &from_finfo,
+ FSE_ARG_STRING, to_len, to_name,
+ FSE_ARG_FINFO, &to_finfo,
+ FSE_ARG_DONE);
+ } else {
+ add_fsevent(FSE_RENAME, ctx,
+ FSE_ARG_STRING, from_len, from_name,
+ FSE_ARG_FINFO, &from_finfo,
+ FSE_ARG_STRING, to_len, to_name,
+ FSE_ARG_DONE);
+ }
+ }
+ if (from_name) {
+ release_pathbuff(from_name);
+ }
+ if (to_name) {
+ release_pathbuff(to_name);
+ }
+#endif /* CONFIG_FSE */
+ from_name = to_name = NULL;
+
+out:
+ if (holding_mntlock) {
+ mount_unlock_renames(locked_mp);
+ mount_drop(locked_mp, 0);
+ holding_mntlock = 0;
+ }
+ if (tdvp) {
+ /*
+ * nameidone has to happen before we vnode_put(tdvp)
+ * since it may need to release the fs_nodelock on the tdvp
+ */
+ nameidone(&toni);
+ if (tvp) {
+ vnode_put(tvp);
+ }
+ vnode_put(tdvp);
+
+ tdvp = NULL;
+ }
+ if (fdvp) {
+ /*
+ * nameidone has to happen before we vnode_put(fdvp)
+ * since it may need to release the fs_nodelock on the fdvp
+ */
+ nameidone(&fromni);
+
+ if (fvp) {
+ vnode_put(fvp);
+ }
+ vnode_put(fdvp);
+
+ fdvp = NULL;
+ }
+ if (fdirp) {
+ nfsm_srv_vattr_init(&fdpostattr, nd->nd_vers);
+ fdpostattrerr = vnode_getattr(fdirp, &fdpostattr, ctx);
+ vnode_put(fdirp);
+ fdirp = NULL;
+ }
+ if (tdirp) {
+ nfsm_srv_vattr_init(&tdpostattr, nd->nd_vers);
+ tdpostattrerr = vnode_getattr(tdirp, &tdpostattr, ctx);
+ vnode_put(tdirp);
+ tdirp = NULL;
+ }
+
+nfsmerr:
+ /* assemble reply */
+ nd->nd_repstat = error;
+ error = nfsrv_rephead(nd, slp, &nmrep, 2 * NFSX_WCCDATA(nd->nd_vers));
+ nfsmout_if(error);
+ *mrepp = nmrep.nmc_mhead;
+ nfsmout_on_status(nd, error);
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_chain_add_wcc_data(error, nd, &nmrep,
+ fdpreattrerr, &fdpreattr, fdpostattrerr, &fdpostattr);
+ nfsm_chain_add_wcc_data(error, nd, &nmrep,
+ tdpreattrerr, &tdpreattr, tdpostattrerr, &tdpostattr);
+ }
+nfsmout:
+ nfsm_chain_build_done(error, &nmrep);
+ if (holding_mntlock) {
+ mount_unlock_renames(locked_mp);
+ mount_drop(locked_mp, 0);
+ }
+ if (tdvp) {
+ /*
+ * nameidone has to happen before we vnode_put(tdvp)
+ * since it may need to release the fs_nodelock on the tdvp
+ */
+ nameidone(&toni);
+
+ if (tvp) {
+ vnode_put(tvp);
+ }
+ vnode_put(tdvp);
+ }
+ if (fdvp) {
+ /*
+ * nameidone has to happen before we vnode_put(fdvp)
+ * since it may need to release the fs_nodelock on the fdvp
+ */
+ nameidone(&fromni);
+
+ if (fvp) {
+ vnode_put(fvp);
+ }
+ vnode_put(fdvp);
+ }
+ if (fdirp) {
+ vnode_put(fdirp);
+ }
+ if (tdirp) {
+ vnode_put(tdirp);
+ }
+ if (frompath) {
+ NFS_ZFREE(ZV_NAMEI, frompath);
+ }
+ if (topath) {
+ NFS_ZFREE(ZV_NAMEI, topath);
+ }
+ if (saved_cred) {
+ kauth_cred_unref(&saved_cred);
+ }
+ if (error) {
+ nfsm_chain_cleanup(&nmrep);
+ *mrepp = NULL;
+ }
+ return error;
+}
+
+/*
+ * nfs link service
+ */
+int
+nfsrv_link(
+ struct nfsrv_descript *nd,
+ struct nfsrv_sock *slp,
+ vfs_context_t ctx,
+ mbuf_t *mrepp)
+{
+ struct nameidata ni;
+ int error, dpreattrerr, dpostattrerr, attrerr;
+ uint32_t len = 0;
+ vnode_t vp, xp, dvp, dirp;
+ struct vnode_attr dpreattr, dpostattr, attr;
+ struct nfs_filehandle nfh, dnfh;
+ struct nfs_export *nx;
+ struct nfs_export_options *nxo;
+ struct nfsm_chain *nmreq, nmrep;
+
+ error = 0;
+ dpreattrerr = dpostattrerr = attrerr = ENOENT;
+ vp = xp = dvp = dirp = NULL;
+ nmreq = &nd->nd_nmreq;
+ nfsm_chain_null(&nmrep);
+
+ nfsm_chain_get_fh_ptr(error, nmreq, nd->nd_vers, nfh.nfh_fhp, nfh.nfh_len);
+ nfsm_chain_get_fh_ptr(error, nmreq, nd->nd_vers, dnfh.nfh_fhp, dnfh.nfh_len);
+ nfsm_chain_get_32(error, nmreq, len);
+ nfsm_name_len_check(error, nd, len);
+ nfsmerr_if(error);
+ error = nfsrv_fhtovp(&nfh, nd, &vp, &nx, &nxo);
+ nfsmerr_if(error);
+
+ /* update export stats */
+ NFSStatAdd64(&nx->nx_stats.ops, 1);
+
+ /* update active user stats */
+ nfsrv_update_user_stat(nx, nd, kauth_cred_getuid(nd->nd_cr), 1, 0, 0);
+
+ error = nfsrv_credcheck(nd, ctx, nx, nxo);
+ nfsmerr_if(error);
+
+ /* we're not allowed to link to directories... */
+ if (vnode_vtype(vp) == VDIR) {
+ error = EPERM; /* POSIX */
+ goto out;
+ }
+
+ /* ...or to anything that kauth doesn't want us to (eg. immutable items) */
+ if ((error = nfsrv_authorize(vp, NULL, KAUTH_VNODE_LINKTARGET, ctx, nxo, 0)) != 0) {
+ goto out;
+ }
+
+ ni.ni_cnd.cn_nameiop = CREATE;
+#if CONFIG_TRIGGERS
+ ni.ni_op = OP_LINK;
+#endif
+ ni.ni_cnd.cn_flags = LOCKPARENT;
+ error = nfsm_chain_get_path_namei(nmreq, len, &ni);
+ if (!error) {
+ error = nfsrv_namei(nd, ctx, &ni, &dnfh, &dirp, &nx, &nxo);
+ }
+ if (dirp) {
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_srv_pre_vattr_init(&dpreattr);
+ dpreattrerr = vnode_getattr(dirp, &dpreattr, ctx);
+ } else {
+ vnode_put(dirp);
+ dirp = NULL;
+ }
+ }
if (error) {
- nfsm_reply(NFSX_WCCDATA(1));
- nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
- if (dirp)
- vrele(dirp);
- return (0);
- }
- nfsm_dissect(tl, u_long *, NFSX_UNSIGNED);
- vtyp = nfsv3tov_type(*tl);
- if (vtyp != VCHR && vtyp != VBLK && vtyp != VSOCK && vtyp != VFIFO) {
- vrele(nd.ni_startdir);
- FREE_ZONE((caddr_t)nd.ni_cnd.cn_pnbuf,
- nd.ni_cnd.cn_pnlen, M_NAMEI);
- nd.ni_cnd.cn_flags &= ~HASBUF;
- error = NFSERR_BADTYPE;
- VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
- vput(nd.ni_dvp);
goto out;
}
- VATTR_NULL(vap);
- nfsm_srvsattr(vap);
- if (vtyp == VCHR || vtyp == VBLK) {
- nfsm_dissect(tl, u_long *, 2 * NFSX_UNSIGNED);
- major = fxdr_unsigned(u_long, *tl++);
- minor = fxdr_unsigned(u_long, *tl);
- vap->va_rdev = makedev(major, minor);
- }
+ dvp = ni.ni_dvp;
+ xp = ni.ni_vp;
- /*
- * Iff doesn't exist, create it.
- */
- if (nd.ni_vp) {
- vrele(nd.ni_startdir);
- FREE_ZONE((caddr_t)nd.ni_cnd.cn_pnbuf,
- nd.ni_cnd.cn_pnlen, M_NAMEI);
- nd.ni_cnd.cn_flags &= ~HASBUF;
+ if (xp != NULL) {
error = EEXIST;
- VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
- vput(nd.ni_dvp);
- goto out;
- }
- vap->va_type = vtyp;
- if (vtyp == VSOCK) {
- vrele(nd.ni_startdir);
- nqsrv_getl(nd.ni_dvp, ND_WRITE);
- error = VOP_CREATE(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, vap);
- if (!error)
- FREE_ZONE(nd.ni_cnd.cn_pnbuf,
- nd.ni_cnd.cn_pnlen, M_NAMEI);
- nd.ni_cnd.cn_flags &= ~HASBUF;
+ } else if (vnode_mount(vp) != vnode_mount(dvp)) {
+ error = EXDEV;
} else {
- if (vtyp != VFIFO && (error = suser(cred, (u_short *)0))) {
- vrele(nd.ni_startdir);
- FREE_ZONE((caddr_t)nd.ni_cnd.cn_pnbuf,
- nd.ni_cnd.cn_pnlen, M_NAMEI);
- nd.ni_cnd.cn_flags &= ~HASBUF;
- VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
- vput(nd.ni_dvp);
- goto out;
- }
- nqsrv_getl(nd.ni_dvp, ND_WRITE);
- if ((error = VOP_MKNOD(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, vap))) {
- vrele(nd.ni_startdir);
- goto out;
- }
- nd.ni_cnd.cn_nameiop = LOOKUP;
- nd.ni_cnd.cn_flags &= ~(LOCKPARENT | SAVESTART);
- nd.ni_cnd.cn_proc = procp;
- nd.ni_cnd.cn_cred = procp->p_ucred;
- error = lookup(&nd);
- FREE_ZONE(nd.ni_cnd.cn_pnbuf, nd.ni_cnd.cn_pnlen, M_NAMEI);
- nd.ni_cnd.cn_flags &= ~HASBUF;
- if (error)
- goto out;
- if (nd.ni_cnd.cn_flags & ISSYMLINK) {
- vrele(nd.ni_dvp);
- vput(nd.ni_vp);
- VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
- error = EINVAL;
- }
+ error = nfsrv_authorize(dvp, NULL, KAUTH_VNODE_ADD_FILE, ctx, nxo, 0);
}
-out:
- vp = nd.ni_vp;
+
+#if CONFIG_MACF
if (!error) {
- bzero((caddr_t)fhp, sizeof(nfh));
- fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
- error = VFS_VPTOFH(vp, &fhp->fh_fid);
- if (!error)
- error = VOP_GETATTR(vp, vap, cred, procp);
- vput(vp);
- }
- diraft_ret = VOP_GETATTR(dirp, &diraft, cred, procp);
- vrele(dirp);
- nfsm_reply(NFSX_SRVFH(1) + NFSX_POSTOPATTR(1) + NFSX_WCCDATA(1));
+ error = mac_vnode_check_link(ctx, dvp, vp, &ni.ni_cnd);
+ if (error) {
+ error = EACCES;
+ }
+ }
+#endif
if (!error) {
- nfsm_srvpostop_fh(fhp);
- nfsm_srvpostop_attr(0, vap);
+ error = VNOP_LINK(vp, dvp, &ni.ni_cnd, ctx);
}
- nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
- return (0);
-nfsmout:
- if (dirp)
- vrele(dirp);
- if (nd.ni_cnd.cn_nameiop) {
- vrele(nd.ni_startdir);
- FREE_ZONE((caddr_t)nd.ni_cnd.cn_pnbuf,
- nd.ni_cnd.cn_pnlen, M_NAMEI);
- nd.ni_cnd.cn_flags &= ~HASBUF;
- }
- VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
- if (nd.ni_dvp == nd.ni_vp)
- vrele(nd.ni_dvp);
- else
- vput(nd.ni_dvp);
- if (nd.ni_vp)
- vput(nd.ni_vp);
- return (error);
-}
-/*
- * nfs remove service
- */
-int
-nfsrv_remove(nfsd, slp, procp, mrq)
- struct nfsrv_descript *nfsd;
- struct nfssvc_sock *slp;
- struct proc *procp;
- struct mbuf **mrq;
-{
- struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
- struct mbuf *nam = nfsd->nd_nam;
- caddr_t dpos = nfsd->nd_dpos;
- struct ucred *cred = &nfsd->nd_cr;
- struct nameidata nd;
- register u_long *tl;
- register long t1;
- caddr_t bpos;
- int error = 0, cache, len, dirfor_ret = 1, diraft_ret = 1;
- int v3 = (nfsd->nd_flag & ND_NFSV3);
- char *cp2;
- struct mbuf *mb, *mreq;
- struct vnode *vp, *dirp;
- struct vattr dirfor, diraft;
- nfsfh_t nfh;
- fhandle_t *fhp;
- u_quad_t frev;
-
-#ifndef nolint
- vp = (struct vnode *)0;
+#if CONFIG_FSE
+ if (nfsrv_fsevents_enabled && !error && need_fsevent(FSE_CREATE_FILE, dvp)) {
+ char *target_path = NULL;
+ int plen, truncated = 0;
+ fse_info finfo;
+
+ /* build the path to the new link file */
+ target_path = get_pathbuff();
+ if (target_path) {
+ plen = safe_getpath(dvp, ni.ni_cnd.cn_nameptr, target_path, MAXPATHLEN, &truncated);
+
+ if (get_fse_info(vp, &finfo, ctx) == 0) {
+ if (truncated) {
+ finfo.mode |= FSE_TRUNCATED_PATH;
+ }
+ add_fsevent(FSE_CREATE_FILE, ctx,
+ FSE_ARG_STRING, plen, target_path,
+ FSE_ARG_FINFO, &finfo,
+ FSE_ARG_DONE);
+ }
+
+ release_pathbuff(target_path);
+ }
+ }
#endif
- fhp = &nfh.fh_generic;
- nfsm_srvmtofh(fhp);
- nfsm_srvnamesiz(len);
- nd.ni_cnd.cn_cred = cred;
- nd.ni_cnd.cn_nameiop = DELETE;
- nd.ni_cnd.cn_flags = LOCKPARENT | LOCKLEAF;
- error = nfs_namei(&nd, fhp, len, slp, nam, &md, &dpos,
- &dirp, procp, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
- if (dirp) {
- if (v3)
- dirfor_ret = VOP_GETATTR(dirp, &dirfor, cred,
- procp);
- else
- vrele(dirp);
+
+ /*
+ * nameidone has to happen before we vnode_put(dvp)
+ * since it may need to release the fs_nodelock on the dvp
+ */
+ nameidone(&ni);
+
+ if (xp) {
+ vnode_put(xp);
}
- if (!error) {
- vp = nd.ni_vp;
- if (vp->v_type == VDIR) {
- error = EPERM; /* POSIX */
- goto out;
- }
- /*
- * The root of a mounted filesystem cannot be deleted.
- */
- if (vp->v_flag & VROOT) {
- error = EBUSY;
- goto out;
- }
+ vnode_put(dvp);
out:
- if (!error) {
- nqsrv_getl(nd.ni_dvp, ND_WRITE);
- nqsrv_getl(vp, ND_WRITE);
-
- error = VOP_REMOVE(nd.ni_dvp, nd.ni_vp, &nd.ni_cnd);
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_srv_vattr_init(&attr, NFS_VER3);
+ attrerr = vnode_getattr(vp, &attr, ctx);
+ }
+ if (dirp) {
+ nfsm_srv_vattr_init(&dpostattr, nd->nd_vers);
+ dpostattrerr = vnode_getattr(dirp, &dpostattr, ctx);
+ vnode_put(dirp);
+ dirp = NULL;
+ }
+ vnode_put(vp);
+ vp = NULL;
- } else {
- VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
- if (nd.ni_dvp == vp)
- vrele(nd.ni_dvp);
- else
- vput(nd.ni_dvp);
- vput(vp);
- }
+nfsmerr:
+ /* assemble reply */
+ nd->nd_repstat = error;
+ error = nfsrv_rephead(nd, slp, &nmrep, NFSX_POSTOPATTR(nd->nd_vers) + NFSX_WCCDATA(nd->nd_vers));
+ nfsmout_if(error);
+ *mrepp = nmrep.nmc_mhead;
+ nfsmout_on_status(nd, error);
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_chain_add_postop_attr(error, nd, &nmrep, attrerr, &attr);
+ nfsm_chain_add_wcc_data(error, nd, &nmrep,
+ dpreattrerr, &dpreattr, dpostattrerr, &dpostattr);
}
- if (dirp && v3) {
- diraft_ret = VOP_GETATTR(dirp, &diraft, cred, procp);
- vrele(dirp);
+nfsmout:
+ nfsm_chain_build_done(error, &nmrep);
+ if (vp) {
+ vnode_put(vp);
}
- nfsm_reply(NFSX_WCCDATA(v3));
- if (v3) {
- nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
- return (0);
+ if (error) {
+ nfsm_chain_cleanup(&nmrep);
+ *mrepp = NULL;
}
- nfsm_srvdone;
+ return error;
}
/*
- * nfs rename service
+ * nfs symbolic link service
*/
int
-nfsrv_rename(nfsd, slp, procp, mrq)
- struct nfsrv_descript *nfsd;
- struct nfssvc_sock *slp;
- struct proc *procp;
- struct mbuf **mrq;
+nfsrv_symlink(
+ struct nfsrv_descript *nd,
+ struct nfsrv_sock *slp,
+ vfs_context_t ctx,
+ mbuf_t *mrepp)
{
- struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
- struct mbuf *nam = nfsd->nd_nam;
- caddr_t dpos = nfsd->nd_dpos;
- struct ucred *cred = &nfsd->nd_cr;
- register u_long *tl;
- register long t1;
- caddr_t bpos;
- int error = 0, cache, len, len2, fdirfor_ret = 1, fdiraft_ret = 1;
- int tdirfor_ret = 1, tdiraft_ret = 1;
- int v3 = (nfsd->nd_flag & ND_NFSV3);
- char *cp2;
- struct mbuf *mb, *mreq;
- struct nameidata fromnd, tond;
- struct vnode *fvp, *tvp, *tdvp, *fdirp = (struct vnode *)0;
- struct vnode *tdirp = (struct vnode *)0;
- struct vattr fdirfor, fdiraft, tdirfor, tdiraft;
- nfsfh_t fnfh, tnfh;
- fhandle_t *ffhp, *tfhp;
- u_quad_t frev;
+ struct vnode_attr dpreattr, dpostattr, postattr;
+ struct vnode_attr va, *vap = &va;
+ struct nameidata ni;
+ int error, dpreattrerr, dpostattrerr, postattrerr;
+ uint32_t len = 0, linkdatalen, cnflags;
uid_t saved_uid;
+ char *linkdata;
+ vnode_t vp, dvp, dirp;
+ struct nfs_filehandle nfh;
+ struct nfs_export *nx = NULL;
+ struct nfs_export_options *nxo = NULL;
+ uio_t auio = NULL;
+ char uio_buf[UIO_SIZEOF(1)];
+ struct nfsm_chain *nmreq, nmrep;
+
+ error = 0;
+ dpreattrerr = dpostattrerr = postattrerr = ENOENT;
+ nmreq = &nd->nd_nmreq;
+ nfsm_chain_null(&nmrep);
+ linkdata = NULL;
+ dirp = NULL;
+
+ saved_uid = kauth_cred_getuid(nd->nd_cr);
-#ifndef nolint
- fvp = (struct vnode *)0;
+ ni.ni_cnd.cn_nameiop = 0;
+ vp = dvp = NULL;
+
+ nfsm_chain_get_fh_ptr(error, nmreq, nd->nd_vers, nfh.nfh_fhp, nfh.nfh_len);
+ nfsm_chain_get_32(error, nmreq, len);
+ nfsm_name_len_check(error, nd, len);
+ nfsmerr_if(error);
+
+ ni.ni_cnd.cn_nameiop = CREATE;
+#if CONFIG_TRIGGERS
+ ni.ni_op = OP_LINK;
#endif
- ffhp = &fnfh.fh_generic;
- tfhp = &tnfh.fh_generic;
- fromnd.ni_cnd.cn_nameiop = 0;
- tond.ni_cnd.cn_nameiop = 0;
- nfsm_srvmtofh(ffhp);
- nfsm_srvnamesiz(len);
- /*
- * Remember our original uid so that we can reset cr_uid before
- * the second nfs_namei() call, in case it is remapped.
- */
- saved_uid = cred->cr_uid;
- fromnd.ni_cnd.cn_cred = cred;
- fromnd.ni_cnd.cn_nameiop = DELETE;
- fromnd.ni_cnd.cn_flags = WANTPARENT | SAVESTART;
- error = nfs_namei(&fromnd, ffhp, len, slp, nam, &md,
- &dpos, &fdirp, procp, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
- if (fdirp) {
- if (v3)
- fdirfor_ret = VOP_GETATTR(fdirp, &fdirfor, cred,
- procp);
- else {
- vrele(fdirp);
- fdirp = (struct vnode *)0;
+ ni.ni_cnd.cn_flags = LOCKPARENT;
+ ni.ni_flag = 0;
+ ni.ni_cnd.cn_ndp = ∋
+ error = nfsm_chain_get_path_namei(nmreq, len, &ni);
+ if (!error) {
+ error = nfsrv_namei(nd, ctx, &ni, &nfh, &dirp, &nx, &nxo);
+ if (nx != NULL) {
+ /* update export stats */
+ NFSStatAdd64(&nx->nx_stats.ops, 1);
+
+ /* update active user stats */
+ nfsrv_update_user_stat(nx, nd, saved_uid, 1, 0, 0);
}
}
- if (error) {
- nfsm_reply(2 * NFSX_WCCDATA(v3));
- nfsm_srvwcc_data(fdirfor_ret, &fdirfor, fdiraft_ret, &fdiraft);
- nfsm_srvwcc_data(tdirfor_ret, &tdirfor, tdiraft_ret, &tdiraft);
- if (fdirp)
- vrele(fdirp);
- return (0);
- }
- fvp = fromnd.ni_vp;
- nfsm_srvmtofh(tfhp);
- nfsm_strsiz(len2, NFS_MAXNAMLEN);
- cred->cr_uid = saved_uid;
- tond.ni_cnd.cn_cred = cred;
- tond.ni_cnd.cn_nameiop = RENAME;
- tond.ni_cnd.cn_flags = LOCKPARENT | LOCKLEAF | NOCACHE | SAVESTART;
- error = nfs_namei(&tond, tfhp, len2, slp, nam, &md,
- &dpos, &tdirp, procp, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
- if (tdirp) {
- if (v3)
- tdirfor_ret = VOP_GETATTR(tdirp, &tdirfor, cred,
- procp);
- else {
- vrele(tdirp);
- tdirp = (struct vnode *)0;
+ if (dirp) {
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_srv_pre_vattr_init(&dpreattr);
+ dpreattrerr = vnode_getattr(dirp, &dpreattr, ctx);
+ } else {
+ vnode_put(dirp);
+ dirp = NULL;
}
}
if (error) {
- VOP_ABORTOP(fromnd.ni_dvp, &fromnd.ni_cnd);
- vrele(fromnd.ni_dvp);
- vrele(fvp);
+ ni.ni_cnd.cn_nameiop = 0;
goto out1;
}
- tdvp = tond.ni_dvp;
- tvp = tond.ni_vp;
- if (tvp != NULL) {
- if (fvp->v_type == VDIR && tvp->v_type != VDIR) {
- if (v3)
- error = EEXIST;
- else
- error = EISDIR;
- goto out;
- } else if (fvp->v_type != VDIR && tvp->v_type == VDIR) {
- if (v3)
- error = EEXIST;
- else
- error = ENOTDIR;
- goto out;
- }
- if (tvp->v_type == VDIR && tvp->v_mountedhere) {
- if (v3)
- error = EXDEV;
- else
- error = ENOTEMPTY;
- goto out;
- }
- }
- if (fvp->v_type == VDIR && fvp->v_mountedhere) {
- if (v3)
- error = EXDEV;
- else
- error = ENOTEMPTY;
+ dvp = ni.ni_dvp;
+ vp = ni.ni_vp;
+
+ VATTR_INIT(vap);
+ if (nd->nd_vers == NFS_VER3) {
+ error = nfsm_chain_get_sattr(nd, nmreq, vap);
+ }
+ nfsm_chain_get_32(error, nmreq, linkdatalen);
+ if (!error && (((nd->nd_vers == NFS_VER2) && (linkdatalen > NFS_MAXPATHLEN)) ||
+ ((nd->nd_vers == NFS_VER3) && (linkdatalen > MAXPATHLEN)))) {
+ error = NFSERR_NAMETOL;
+ }
+ nfsmerr_if(error);
+ MALLOC(linkdata, caddr_t, linkdatalen + 1, M_TEMP, M_WAITOK);
+ if (linkdata) {
+ auio = uio_createwithbuffer(1, 0, UIO_SYSSPACE, UIO_READ,
+ &uio_buf[0], sizeof(uio_buf));
+ }
+ if (!linkdata || !auio) {
+ error = ENOMEM;
goto out;
}
- if (fvp->v_mount != tdvp->v_mount) {
- if (v3)
- error = EXDEV;
- else
- error = ENOTEMPTY;
+ uio_addiov(auio, CAST_USER_ADDR_T(linkdata), linkdatalen);
+ error = nfsm_chain_get_uio(nmreq, linkdatalen, auio);
+ if (!error && (nd->nd_vers == NFS_VER2)) {
+ error = nfsm_chain_get_sattr(nd, nmreq, vap);
+ }
+ nfsmerr_if(error);
+ *(linkdata + linkdatalen) = '\0';
+ if (vp) {
+ error = EEXIST;
goto out;
}
- if (fvp == tdvp)
- if (v3)
- error = EINVAL;
- else
- error = ENOTEMPTY;
+
+ VATTR_SET(vap, va_type, VLNK);
+ VATTR_CLEAR_ACTIVE(vap, va_data_size);
+ VATTR_CLEAR_ACTIVE(vap, va_access_time);
/*
- * If source is the same as the destination (that is the
- * same vnode) then there is nothing to do.
- * (fixed to have POSIX semantics - CSM 3/2/98)
+ * Server policy is to alway use the mapped rpc credential for
+ * file system object creation. This has the nice side effect of
+ * enforcing BSD creation semantics
*/
- if (fvp == tvp)
- error = -1;
-out:
+ VATTR_CLEAR_ACTIVE(vap, va_uid);
+ VATTR_CLEAR_ACTIVE(vap, va_gid);
+
+ /* authorize before creating */
+ error = nfsrv_authorize(dvp, NULL, KAUTH_VNODE_ADD_FILE, ctx, nxo, 0);
+
+ /* validate given attributes */
if (!error) {
- nqsrv_getl(fromnd.ni_dvp, ND_WRITE);
- nqsrv_getl(tdvp, ND_WRITE);
- if (tvp)
- nqsrv_getl(tvp, ND_WRITE);
- error = VOP_RENAME(fromnd.ni_dvp, fromnd.ni_vp, &fromnd.ni_cnd,
- tond.ni_dvp, tond.ni_vp, &tond.ni_cnd);
- } else {
- VOP_ABORTOP(tond.ni_dvp, &tond.ni_cnd);
- if (tdvp == tvp)
- vrele(tdvp);
- else
- vput(tdvp);
- if (tvp)
- vput(tvp);
- VOP_ABORTOP(fromnd.ni_dvp, &fromnd.ni_cnd);
- vrele(fromnd.ni_dvp);
- vrele(fvp);
- if (error == -1)
- error = 0;
- }
- vrele(tond.ni_startdir);
- FREE_ZONE(tond.ni_cnd.cn_pnbuf, tond.ni_cnd.cn_pnlen, M_NAMEI);
- tond.ni_cnd.cn_flags &= ~HASBUF;
-out1:
- if (fdirp) {
- fdiraft_ret = VOP_GETATTR(fdirp, &fdiraft, cred, procp);
- vrele(fdirp);
+ error = vnode_authattr_new(dvp, vap, 0, ctx);
}
- if (tdirp) {
- tdiraft_ret = VOP_GETATTR(tdirp, &tdiraft, cred, procp);
- vrele(tdirp);
- }
- vrele(fromnd.ni_startdir);
- FREE_ZONE(fromnd.ni_cnd.cn_pnbuf, fromnd.ni_cnd.cn_pnlen, M_NAMEI);
- fromnd.ni_cnd.cn_flags &= ~HASBUF;
- nfsm_reply(2 * NFSX_WCCDATA(v3));
- if (v3) {
- nfsm_srvwcc_data(fdirfor_ret, &fdirfor, fdiraft_ret, &fdiraft);
- nfsm_srvwcc_data(tdirfor_ret, &tdirfor, tdiraft_ret, &tdiraft);
+ if (!error) {
+ error = vn_authorize_create(dvp, &ni.ni_cnd, vap, ctx, NULL);
+ if (error) {
+ error = EACCES;
+ }
}
- return (0);
-
-nfsmout:
- if (fdirp)
- vrele(fdirp);
- if (tdirp)
- vrele(tdirp);
- if (tond.ni_cnd.cn_nameiop) {
- vrele(tond.ni_startdir);
- FREE_ZONE(tond.ni_cnd.cn_pnbuf, tond.ni_cnd.cn_pnlen, M_NAMEI);
- tond.ni_cnd.cn_flags &= ~HASBUF;
- }
- if (fromnd.ni_cnd.cn_nameiop) {
- vrele(fromnd.ni_startdir);
- FREE_ZONE(fromnd.ni_cnd.cn_pnbuf,
- fromnd.ni_cnd.cn_pnlen, M_NAMEI);
- fromnd.ni_cnd.cn_flags &= ~HASBUF;
- VOP_ABORTOP(fromnd.ni_dvp, &fromnd.ni_cnd);
- vrele(fromnd.ni_dvp);
- vrele(fvp);
- }
- return (error);
-}
-/*
- * nfs link service
- */
-int
-nfsrv_link(nfsd, slp, procp, mrq)
- struct nfsrv_descript *nfsd;
- struct nfssvc_sock *slp;
- struct proc *procp;
- struct mbuf **mrq;
-{
- struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
- struct mbuf *nam = nfsd->nd_nam;
- caddr_t dpos = nfsd->nd_dpos;
- struct ucred *cred = &nfsd->nd_cr;
- struct nameidata nd;
- register u_long *tl;
- register long t1;
- caddr_t bpos;
- int error = 0, rdonly, cache, len, dirfor_ret = 1, diraft_ret = 1;
- int getret = 1, v3 = (nfsd->nd_flag & ND_NFSV3);
- char *cp2;
- struct mbuf *mb, *mreq;
- struct vnode *vp, *xp, *dirp = (struct vnode *)0;
- struct vattr dirfor, diraft, at;
- nfsfh_t nfh, dnfh;
- fhandle_t *fhp, *dfhp;
- u_quad_t frev;
-
- fhp = &nfh.fh_generic;
- dfhp = &dnfh.fh_generic;
- nfsm_srvmtofh(fhp);
- nfsm_srvmtofh(dfhp);
- nfsm_srvnamesiz(len);
- if ((error = nfsrv_fhtovp(fhp, FALSE, &vp, cred, slp, nam,
- &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE))) {
- nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_WCCDATA(v3));
- nfsm_srvpostop_attr(getret, &at);
- nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
- return (0);
- }
- if (vp->v_type == VDIR) {
- error = EPERM; /* POSIX */
- goto out1;
+ if (!error) {
+ error = VNOP_SYMLINK(dvp, &vp, &ni.ni_cnd, vap, linkdata, ctx);
}
- nd.ni_cnd.cn_cred = cred;
- nd.ni_cnd.cn_nameiop = CREATE;
- nd.ni_cnd.cn_flags = LOCKPARENT;
- error = nfs_namei(&nd, dfhp, len, slp, nam, &md, &dpos,
- &dirp, procp, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
- if (dirp) {
- if (v3)
- dirfor_ret = VOP_GETATTR(dirp, &dirfor, cred,
- procp);
- else {
- vrele(dirp);
- dirp = (struct vnode *)0;
+
+ if (!error && (nd->nd_vers == NFS_VER3)) {
+ if (vp == NULL) {
+ ni.ni_cnd.cn_nameiop = LOOKUP;
+#if CONFIG_TRIGGERS
+ ni.ni_op = OP_LOOKUP;
+#endif
+ ni.ni_cnd.cn_flags &= ~(LOCKPARENT | FOLLOW);
+ ni.ni_cnd.cn_flags |= (NOFOLLOW | LOCKLEAF);
+ ni.ni_cnd.cn_context = ctx;
+ ni.ni_startdir = dvp;
+ ni.ni_usedvp = dvp;
+ ni.ni_rootdir = rootvnode;
+ cnflags = ni.ni_cnd.cn_flags; /* store in case we have to restore */
+ while ((error = lookup(&ni)) == ERECYCLE) {
+ ni.ni_cnd.cn_flags = cnflags;
+ ni.ni_cnd.cn_nameptr = ni.ni_cnd.cn_pnbuf;
+ ni.ni_usedvp = ni.ni_dvp = ni.ni_startdir = dvp;
+ }
+ if (!error) {
+ vp = ni.ni_vp;
+ }
+ }
+ if (!error) {
+ error = nfsrv_vptofh(nx, NFS_VER3, NULL, vp, ctx, &nfh);
+ if (!error) {
+ nfsm_srv_vattr_init(&postattr, NFS_VER3);
+ postattrerr = vnode_getattr(vp, &postattr, ctx);
+ }
}
}
- if (error)
- goto out1;
- xp = nd.ni_vp;
- if (xp != NULL) {
- error = EEXIST;
- goto out;
+
+#if CONFIG_FSE
+ if (nfsrv_fsevents_enabled && !error && vp) {
+ add_fsevent(FSE_CREATE_FILE, ctx,
+ FSE_ARG_VNODE, vp,
+ FSE_ARG_DONE);
}
- xp = nd.ni_dvp;
- if (vp->v_mount != xp->v_mount)
- error = EXDEV;
+#endif
out:
- if (!error) {
- nqsrv_getl(vp, ND_WRITE);
- nqsrv_getl(xp, ND_WRITE);
- error = VOP_LINK(vp, nd.ni_dvp, &nd.ni_cnd);
- } else {
- VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
- if (nd.ni_dvp == nd.ni_vp)
- vrele(nd.ni_dvp);
- else
- vput(nd.ni_dvp);
- if (nd.ni_vp)
- vrele(nd.ni_vp);
+ /*
+ * nameidone has to happen before we vnode_put(dvp)
+ * since it may need to release the fs_nodelock on the dvp
+ */
+ nameidone(&ni);
+ ni.ni_cnd.cn_nameiop = 0;
+ if (vp) {
+ vnode_put(vp);
}
+ vnode_put(dvp);
out1:
- if (v3)
- getret = VOP_GETATTR(vp, &at, cred, procp);
- if (dirp) {
- diraft_ret = VOP_GETATTR(dirp, &diraft, cred, procp);
- vrele(dirp);
+ if (linkdata) {
+ FREE(linkdata, M_TEMP);
+ linkdata = NULL;
}
- vrele(vp);
- nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_WCCDATA(v3));
- if (v3) {
- nfsm_srvpostop_attr(getret, &at);
- nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
- return (0);
+ if (dirp) {
+ nfsm_srv_vattr_init(&dpostattr, nd->nd_vers);
+ dpostattrerr = vnode_getattr(dirp, &dpostattr, ctx);
+ vnode_put(dirp);
+ dirp = NULL;
}
- nfsm_srvdone;
-}
-/*
- * nfs symbolic link service
- */
-int
-nfsrv_symlink(nfsd, slp, procp, mrq)
- struct nfsrv_descript *nfsd;
- struct nfssvc_sock *slp;
- struct proc *procp;
- struct mbuf **mrq;
-{
- struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
- struct mbuf *nam = nfsd->nd_nam;
- caddr_t dpos = nfsd->nd_dpos;
- struct ucred *cred = &nfsd->nd_cr;
- struct vattr va, dirfor, diraft;
- struct nameidata nd;
- register struct vattr *vap = &va;
- register u_long *tl;
- register long t1;
- struct nfsv2_sattr *sp;
- char *bpos, *pathcp = (char *)0, *cp2;
- struct uio io;
- struct iovec iv;
- int error = 0, cache, len, len2, dirfor_ret = 1, diraft_ret = 1;
- int v3 = (nfsd->nd_flag & ND_NFSV3);
- struct mbuf *mb, *mreq, *mb2;
- struct vnode *dirp = (struct vnode *)0;
- nfsfh_t nfh;
- fhandle_t *fhp;
- u_quad_t frev;
-
- nd.ni_cnd.cn_nameiop = 0;
- fhp = &nfh.fh_generic;
- nfsm_srvmtofh(fhp);
- nfsm_srvnamesiz(len);
- nd.ni_cnd.cn_cred = cred;
- nd.ni_cnd.cn_nameiop = CREATE;
- nd.ni_cnd.cn_flags = LOCKPARENT | SAVESTART;
- error = nfs_namei(&nd, fhp, len, slp, nam, &md, &dpos,
- &dirp, procp, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
- if (dirp) {
- if (v3)
- dirfor_ret = VOP_GETATTR(dirp, &dirfor, cred,
- procp);
- else {
- vrele(dirp);
- dirp = (struct vnode *)0;
+nfsmerr:
+ /* assemble reply */
+ nd->nd_repstat = error;
+ error = nfsrv_rephead(nd, slp, &nmrep, NFSX_SRVFH(nd->nd_vers, &nfh) +
+ NFSX_POSTOPATTR(nd->nd_vers) + NFSX_WCCDATA(nd->nd_vers));
+ nfsmout_if(error);
+ *mrepp = nmrep.nmc_mhead;
+ nfsmout_on_status(nd, error);
+ if (nd->nd_vers == NFS_VER3) {
+ if (!nd->nd_repstat) {
+ nfsm_chain_add_postop_fh(error, &nmrep, nfh.nfh_fhp, nfh.nfh_len);
+ nfsm_chain_add_postop_attr(error, nd, &nmrep, postattrerr, &postattr);
}
+ nfsm_chain_add_wcc_data(error, nd, &nmrep,
+ dpreattrerr, &dpreattr, dpostattrerr, &dpostattr);
}
- if (error)
- goto out;
- VATTR_NULL(vap);
- if (v3)
- nfsm_srvsattr(vap);
- nfsm_strsiz(len2, NFS_MAXPATHLEN);
- MALLOC(pathcp, caddr_t, len2 + 1, M_TEMP, M_WAITOK);
- iv.iov_base = pathcp;
- iv.iov_len = len2;
- io.uio_resid = len2;
- io.uio_offset = 0;
- io.uio_iov = &iv;
- io.uio_iovcnt = 1;
- io.uio_segflg = UIO_SYSSPACE;
- io.uio_rw = UIO_READ;
- io.uio_procp = (struct proc *)0;
- nfsm_mtouio(&io, len2);
- if (!v3) {
- nfsm_dissect(sp, struct nfsv2_sattr *, NFSX_V2SATTR);
- vap->va_mode = fxdr_unsigned(u_short, sp->sa_mode);
- }
- *(pathcp + len2) = '\0';
- if (nd.ni_vp) {
- vrele(nd.ni_startdir);
- FREE_ZONE(nd.ni_cnd.cn_pnbuf, nd.ni_cnd.cn_pnlen, M_NAMEI);
- nd.ni_cnd.cn_flags &= ~HASBUF;
- VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
- if (nd.ni_dvp == nd.ni_vp)
- vrele(nd.ni_dvp);
- else
- vput(nd.ni_dvp);
- vrele(nd.ni_vp);
- error = EEXIST;
- goto out;
- }
- nqsrv_getl(nd.ni_dvp, ND_WRITE);
- error = VOP_SYMLINK(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, vap, pathcp);
- if (error)
- vrele(nd.ni_startdir);
- else {
- if (v3) {
- nd.ni_cnd.cn_nameiop = LOOKUP;
- nd.ni_cnd.cn_flags &= ~(LOCKPARENT | SAVESTART | FOLLOW);
- nd.ni_cnd.cn_flags |= (NOFOLLOW | LOCKLEAF);
- nd.ni_cnd.cn_proc = procp;
- nd.ni_cnd.cn_cred = cred;
- error = lookup(&nd);
- if (!error) {
- bzero((caddr_t)fhp, sizeof(nfh));
- fhp->fh_fsid = nd.ni_vp->v_mount->mnt_stat.f_fsid;
- error = VFS_VPTOFH(nd.ni_vp, &fhp->fh_fid);
- if (!error)
- error = VOP_GETATTR(nd.ni_vp, vap, cred,
- procp);
- vput(nd.ni_vp);
- }
- } else
- vrele(nd.ni_startdir);
- FREE_ZONE(nd.ni_cnd.cn_pnbuf, nd.ni_cnd.cn_pnlen, M_NAMEI);
- nd.ni_cnd.cn_flags &= ~HASBUF;
+nfsmout:
+ nfsm_chain_build_done(error, &nmrep);
+ if (ni.ni_cnd.cn_nameiop) {
+ /*
+ * nameidone has to happen before we vnode_put(dvp)
+ * since it may need to release the fs_nodelock on the dvp
+ */
+ nameidone(&ni);
+
+ if (vp) {
+ vnode_put(vp);
+ }
+ vnode_put(dvp);
}
-out:
- if (pathcp)
- FREE(pathcp, M_TEMP);
if (dirp) {
- diraft_ret = VOP_GETATTR(dirp, &diraft, cred, procp);
- vrele(dirp);
+ vnode_put(dirp);
}
- nfsm_reply(NFSX_SRVFH(v3) + NFSX_POSTOPATTR(v3) + NFSX_WCCDATA(v3));
- if (v3) {
- if (!error) {
- nfsm_srvpostop_fh(fhp);
- nfsm_srvpostop_attr(0, vap);
- }
- nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
+ if (linkdata) {
+ FREE(linkdata, M_TEMP);
}
- return (0);
-nfsmout:
- if (nd.ni_cnd.cn_nameiop) {
- vrele(nd.ni_startdir);
- FREE_ZONE(nd.ni_cnd.cn_pnbuf, nd.ni_cnd.cn_pnlen, M_NAMEI);
- nd.ni_cnd.cn_flags &= ~HASBUF;
- }
- if (dirp)
- vrele(dirp);
- VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
- if (nd.ni_dvp == nd.ni_vp)
- vrele(nd.ni_dvp);
- else
- vput(nd.ni_dvp);
- if (nd.ni_vp)
- vrele(nd.ni_vp);
- if (pathcp)
- FREE(pathcp, M_TEMP);
- return (error);
+ if (error) {
+ nfsm_chain_cleanup(&nmrep);
+ *mrepp = NULL;
+ }
+ return error;
}
/*
* nfs mkdir service
*/
+
int
-nfsrv_mkdir(nfsd, slp, procp, mrq)
- struct nfsrv_descript *nfsd;
- struct nfssvc_sock *slp;
- struct proc *procp;
- struct mbuf **mrq;
+nfsrv_mkdir(
+ struct nfsrv_descript *nd,
+ struct nfsrv_sock *slp,
+ vfs_context_t ctx,
+ mbuf_t *mrepp)
{
- struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
- struct mbuf *nam = nfsd->nd_nam;
- caddr_t dpos = nfsd->nd_dpos;
- struct ucred *cred = &nfsd->nd_cr;
- struct vattr va, dirfor, diraft;
- register struct vattr *vap = &va;
- register struct nfs_fattr *fp;
- struct nameidata nd;
- register caddr_t cp;
- register u_long *tl;
- register long t1;
- caddr_t bpos;
- int error = 0, cache, len, dirfor_ret = 1, diraft_ret = 1;
- int v3 = (nfsd->nd_flag & ND_NFSV3);
- char *cp2;
- struct mbuf *mb, *mb2, *mreq;
- struct vnode *vp, *dirp = (struct vnode *)0;
- nfsfh_t nfh;
- fhandle_t *fhp;
- u_quad_t frev;
-
- fhp = &nfh.fh_generic;
- nfsm_srvmtofh(fhp);
- nfsm_srvnamesiz(len);
- nd.ni_cnd.cn_cred = cred;
- nd.ni_cnd.cn_nameiop = CREATE;
- nd.ni_cnd.cn_flags = LOCKPARENT;
- error = nfs_namei(&nd, fhp, len, slp, nam, &md, &dpos,
- &dirp, procp, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
+ struct vnode_attr dpreattr, dpostattr, postattr;
+ struct vnode_attr va, *vap = &va;
+ struct nameidata ni;
+ int error, dpreattrerr, dpostattrerr, postattrerr;
+ uint32_t len = 0;
+ vnode_t vp, dvp, dirp;
+ struct nfs_filehandle nfh;
+ struct nfs_export *nx = NULL;
+ struct nfs_export_options *nxo = NULL;
+ uid_t saved_uid;
+ kauth_acl_t xacl = NULL;
+ struct nfsm_chain *nmreq, nmrep;
+
+ error = 0;
+ dpreattrerr = dpostattrerr = postattrerr = ENOENT;
+ nmreq = &nd->nd_nmreq;
+ nfsm_chain_null(&nmrep);
+
+ saved_uid = kauth_cred_getuid(nd->nd_cr);
+
+ ni.ni_cnd.cn_nameiop = 0;
+ vp = dvp = dirp = NULL;
+
+ nfsm_chain_get_fh_ptr(error, nmreq, nd->nd_vers, nfh.nfh_fhp, nfh.nfh_len);
+ nfsm_chain_get_32(error, nmreq, len);
+ nfsm_name_len_check(error, nd, len);
+ nfsmerr_if(error);
+
+ ni.ni_cnd.cn_nameiop = CREATE;
+#if CONFIG_TRIGGERS
+ ni.ni_op = OP_LINK;
+#endif
+ ni.ni_cnd.cn_flags = LOCKPARENT | WILLBEDIR;
+ ni.ni_cnd.cn_ndp = ∋
+ error = nfsm_chain_get_path_namei(nmreq, len, &ni);
+ if (!error) {
+ error = nfsrv_namei(nd, ctx, &ni, &nfh, &dirp, &nx, &nxo);
+ if (nx != NULL) {
+ /* update export stats */
+ NFSStatAdd64(&nx->nx_stats.ops, 1);
+
+ /* update active user stats */
+ nfsrv_update_user_stat(nx, nd, saved_uid, 1, 0, 0);
+ }
+ }
if (dirp) {
- if (v3)
- dirfor_ret = VOP_GETATTR(dirp, &dirfor, cred,
- procp);
- else {
- vrele(dirp);
- dirp = (struct vnode *)0;
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_srv_pre_vattr_init(&dpreattr);
+ dpreattrerr = vnode_getattr(dirp, &dpreattr, ctx);
+ } else {
+ vnode_put(dirp);
+ dirp = NULL;
}
}
if (error) {
- nfsm_reply(NFSX_WCCDATA(v3));
- nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
- if (dirp)
- vrele(dirp);
- return (0);
- }
- VATTR_NULL(vap);
- if (v3) {
- nfsm_srvsattr(vap);
- } else {
- nfsm_dissect(tl, u_long *, NFSX_UNSIGNED);
- vap->va_mode = nfstov_mode(*tl++);
+ ni.ni_cnd.cn_nameiop = 0;
+ goto nfsmerr;
}
- vap->va_type = VDIR;
- vp = nd.ni_vp;
+ dvp = ni.ni_dvp;
+ vp = ni.ni_vp;
+
+ VATTR_INIT(vap);
+ error = nfsm_chain_get_sattr(nd, nmreq, vap);
+ nfsmerr_if(error);
+ VATTR_SET(vap, va_type, VDIR);
+
if (vp != NULL) {
- VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
- if (nd.ni_dvp == vp)
- vrele(nd.ni_dvp);
- else
- vput(nd.ni_dvp);
- vrele(vp);
+ /*
+ * nameidone has to happen before we vnode_put(dvp)
+ * since it may need to release the fs_nodelock on the dvp
+ */
+ nameidone(&ni);
+ vnode_put(dvp);
+ vnode_put(vp);
error = EEXIST;
goto out;
}
- nqsrv_getl(nd.ni_dvp, ND_WRITE);
- error = VOP_MKDIR(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, vap);
+
+ error = nfsrv_authorize(dvp, NULL, KAUTH_VNODE_ADD_SUBDIRECTORY, ctx, nxo, 0);
+
+ /* construct ACL and handle inheritance */
+ if (!error) {
+ error = kauth_acl_inherit(dvp,
+ NULL,
+ &xacl, /* isdir */
+ 1,
+ ctx);
+
+ if (!error && xacl != NULL) {
+ VATTR_SET(vap, va_acl, xacl);
+ }
+ }
+
+ VATTR_CLEAR_ACTIVE(vap, va_data_size);
+ VATTR_CLEAR_ACTIVE(vap, va_access_time);
+ /*
+ * We don't support the S_ISGID bit for directories. Solaris and other
+ * SRV4 derived systems might set this to get BSD semantics, which we enforce
+ * any ways.
+ */
+ if (VATTR_IS_ACTIVE(vap, va_mode)) {
+ vap->va_mode &= ~S_ISGID;
+ }
+ /*
+ * Server policy is to alway use the mapped rpc credential for
+ * file system object creation. This has the nice side effect of
+ * enforcing BSD creation semantics
+ */
+ VATTR_CLEAR_ACTIVE(vap, va_uid);
+ VATTR_CLEAR_ACTIVE(vap, va_gid);
+
+ /* validate new-file security information */
+ if (!error) {
+ error = vnode_authattr_new(dvp, vap, 0, ctx);
+ }
+ /*
+ * vnode_authattr_new can return errors other than EPERM, but that's not going to
+ * sit well with our clients so we map all errors to EPERM.
+ */
+ if (error) {
+ error = EPERM;
+ }
+
+ if (!error) {
+ error = vn_authorize_mkdir(dvp, &ni.ni_cnd, vap, ctx, NULL);
+ if (error) {
+ error = EACCES;
+ }
+ }
+
+ if (!error) {
+ error = VNOP_MKDIR(dvp, &vp, &ni.ni_cnd, vap, ctx);
+ }
+
+#if CONFIG_FSE
+ if (nfsrv_fsevents_enabled && !error) {
+ add_fsevent(FSE_CREATE_DIR, ctx, FSE_ARG_VNODE, vp, FSE_ARG_DONE);
+ }
+#endif
+
+ if (!error && !VATTR_ALL_SUPPORTED(vap)) {
+ /*
+ * If some of the requested attributes weren't handled by the VNOP,
+ * use our fallback code.
+ */
+ error = vnode_setattr_fallback(vp, vap, ctx);
+ }
+
+ if (xacl != NULL) {
+ kauth_acl_free(xacl);
+ }
+
if (!error) {
- vp = nd.ni_vp;
- bzero((caddr_t)fhp, sizeof(nfh));
- fhp->fh_fsid = vp->v_mount->mnt_stat.f_fsid;
- error = VFS_VPTOFH(vp, &fhp->fh_fid);
- if (!error)
- error = VOP_GETATTR(vp, vap, cred, procp);
- vput(vp);
+ error = nfsrv_vptofh(nx, nd->nd_vers, NULL, vp, ctx, &nfh);
+ if (!error) {
+ nfsm_srv_vattr_init(&postattr, nd->nd_vers);
+ postattrerr = vnode_getattr(vp, &postattr, ctx);
+ if (nd->nd_vers == NFS_VER2) {
+ error = postattrerr;
+ }
+ }
+ vnode_put(vp);
+ vp = NULL;
}
+ /*
+ * nameidone has to happen before we vnode_put(dvp)
+ * since it may need to release the fs_nodelock on the dvp
+ */
+ nameidone(&ni);
+ vnode_put(dvp);
out:
+ ni.ni_cnd.cn_nameiop = 0;
+
if (dirp) {
- diraft_ret = VOP_GETATTR(dirp, &diraft, cred, procp);
- vrele(dirp);
+ nfsm_srv_vattr_init(&dpostattr, nd->nd_vers);
+ dpostattrerr = vnode_getattr(dirp, &dpostattr, ctx);
+ vnode_put(dirp);
+ dirp = NULL;
}
- nfsm_reply(NFSX_SRVFH(v3) + NFSX_POSTOPATTR(v3) + NFSX_WCCDATA(v3));
- if (v3) {
- if (!error) {
- nfsm_srvpostop_fh(fhp);
- nfsm_srvpostop_attr(0, vap);
+
+nfsmerr:
+ /* assemble reply */
+ nd->nd_repstat = error;
+ error = nfsrv_rephead(nd, slp, &nmrep, NFSX_SRVFH(nd->nd_vers, &nfh) +
+ NFSX_POSTOPATTR(nd->nd_vers) + NFSX_WCCDATA(nd->nd_vers));
+ nfsmout_if(error);
+ *mrepp = nmrep.nmc_mhead;
+ nfsmout_on_status(nd, error);
+ if (nd->nd_vers == NFS_VER3) {
+ if (!nd->nd_repstat) {
+ nfsm_chain_add_postop_fh(error, &nmrep, nfh.nfh_fhp, nfh.nfh_len);
+ nfsm_chain_add_postop_attr(error, nd, &nmrep, postattrerr, &postattr);
}
- nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
+ nfsm_chain_add_wcc_data(error, nd, &nmrep,
+ dpreattrerr, &dpreattr, dpostattrerr, &dpostattr);
} else {
- nfsm_srvfhtom(fhp, v3);
- nfsm_build(fp, struct nfs_fattr *, NFSX_V2FATTR);
- nfsm_srvfillattr(vap, fp);
+ nfsm_chain_add_fh(error, &nmrep, NFS_VER2, nfh.nfh_fhp, nfh.nfh_len);
+ if (!error) {
+ error = nfsm_chain_add_fattr(nd, &nmrep, &postattr);
+ }
}
- return (0);
nfsmout:
- if (dirp)
- vrele(dirp);
- VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
- if (nd.ni_dvp == nd.ni_vp)
- vrele(nd.ni_dvp);
- else
- vput(nd.ni_dvp);
- if (nd.ni_vp)
- vrele(nd.ni_vp);
- return (error);
+ nfsm_chain_build_done(error, &nmrep);
+ if (ni.ni_cnd.cn_nameiop) {
+ /*
+ * nameidone has to happen before we vnode_put(dvp)
+ * since it may need to release the fs_nodelock on the dvp
+ */
+ nameidone(&ni);
+ vnode_put(dvp);
+ if (vp) {
+ vnode_put(vp);
+ }
+ }
+ if (dirp) {
+ vnode_put(dirp);
+ }
+ if (error) {
+ nfsm_chain_cleanup(&nmrep);
+ *mrepp = NULL;
+ }
+ return error;
}
/*
* nfs rmdir service
*/
int
-nfsrv_rmdir(nfsd, slp, procp, mrq)
- struct nfsrv_descript *nfsd;
- struct nfssvc_sock *slp;
- struct proc *procp;
- struct mbuf **mrq;
+nfsrv_rmdir(
+ struct nfsrv_descript *nd,
+ struct nfsrv_sock *slp,
+ vfs_context_t ctx,
+ mbuf_t *mrepp)
{
- struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
- struct mbuf *nam = nfsd->nd_nam;
- caddr_t dpos = nfsd->nd_dpos;
- struct ucred *cred = &nfsd->nd_cr;
- register u_long *tl;
- register long t1;
- caddr_t bpos;
- int error = 0, cache, len, dirfor_ret = 1, diraft_ret = 1;
- int v3 = (nfsd->nd_flag & ND_NFSV3);
- char *cp2;
- struct mbuf *mb, *mreq;
- struct vnode *vp, *dirp = (struct vnode *)0;
- struct vattr dirfor, diraft;
- nfsfh_t nfh;
- fhandle_t *fhp;
- struct nameidata nd;
- u_quad_t frev;
-
- fhp = &nfh.fh_generic;
- nfsm_srvmtofh(fhp);
- nfsm_srvnamesiz(len);
- nd.ni_cnd.cn_cred = cred;
- nd.ni_cnd.cn_nameiop = DELETE;
- nd.ni_cnd.cn_flags = LOCKPARENT | LOCKLEAF;
- error = nfs_namei(&nd, fhp, len, slp, nam, &md, &dpos,
- &dirp, procp, (nfsd->nd_flag & ND_KERBAUTH), FALSE);
+ int error, dpreattrerr, dpostattrerr;
+ uint32_t len = 0;
+ uid_t saved_uid;
+ vnode_t vp, dvp, dirp;
+ struct vnode_attr dpreattr, dpostattr;
+ struct nfs_filehandle nfh;
+ struct nfs_export *nx = NULL;
+ struct nfs_export_options *nxo = NULL;
+ struct nameidata ni;
+ struct nfsm_chain *nmreq, nmrep;
+
+ error = 0;
+ dpreattrerr = dpostattrerr = ENOENT;
+ saved_uid = kauth_cred_getuid(nd->nd_cr);
+ nmreq = &nd->nd_nmreq;
+ nfsm_chain_null(&nmrep);
+
+ vp = dvp = dirp = NULL;
+
+ nfsm_chain_get_fh_ptr(error, nmreq, nd->nd_vers, nfh.nfh_fhp, nfh.nfh_len);
+ nfsm_chain_get_32(error, nmreq, len);
+ nfsm_name_len_check(error, nd, len);
+ nfsmerr_if(error);
+
+ ni.ni_cnd.cn_nameiop = DELETE;
+#if CONFIG_TRIGGERS
+ ni.ni_op = OP_UNLINK;
+#endif
+ ni.ni_cnd.cn_flags = LOCKPARENT | LOCKLEAF;
+ ni.ni_cnd.cn_ndp = ∋
+ error = nfsm_chain_get_path_namei(nmreq, len, &ni);
+ if (!error) {
+ error = nfsrv_namei(nd, ctx, &ni, &nfh, &dirp, &nx, &nxo);
+ if (nx != NULL) {
+ /* update export stats */
+ NFSStatAdd64(&nx->nx_stats.ops, 1);
+
+ /* update active user stats */
+ nfsrv_update_user_stat(nx, nd, saved_uid, 1, 0, 0);
+ }
+ }
if (dirp) {
- if (v3)
- dirfor_ret = VOP_GETATTR(dirp, &dirfor, cred,
- procp);
- else {
- vrele(dirp);
- dirp = (struct vnode *)0;
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_srv_pre_vattr_init(&dpreattr);
+ dpreattrerr = vnode_getattr(dirp, &dpreattr, ctx);
+ } else {
+ vnode_put(dirp);
+ dirp = NULL;
}
}
- if (error) {
- nfsm_reply(NFSX_WCCDATA(v3));
- nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
- if (dirp)
- vrele(dirp);
- return (0);
- }
- vp = nd.ni_vp;
- if (vp->v_type != VDIR) {
+ nfsmerr_if(error);
+
+ dvp = ni.ni_dvp;
+ vp = ni.ni_vp;
+
+ if (vnode_vtype(vp) != VDIR) {
error = ENOTDIR;
goto out;
}
/*
* No rmdir "." please.
*/
- if (nd.ni_dvp == vp) {
+ if (dvp == vp) {
error = EINVAL;
goto out;
}
/*
* The root of a mounted filesystem cannot be deleted.
*/
- if (vp->v_flag & VROOT)
+ if (vnode_isvroot(vp)) {
error = EBUSY;
-out:
+ }
if (!error) {
- nqsrv_getl(nd.ni_dvp, ND_WRITE);
- nqsrv_getl(vp, ND_WRITE);
- error = VOP_RMDIR(nd.ni_dvp, nd.ni_vp, &nd.ni_cnd);
- } else {
- VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
- if (nd.ni_dvp == nd.ni_vp)
- vrele(nd.ni_dvp);
- else
- vput(nd.ni_dvp);
- vput(vp);
+ error = nfsrv_authorize(vp, dvp, KAUTH_VNODE_DELETE, ctx, nxo, 0);
+ }
+ if (!error) {
+ error = vn_authorize_rmdir(dvp, vp, &ni.ni_cnd, ctx, NULL);
+ if (error) {
+ error = EACCES;
+ }
+ }
+
+ if (!error) {
+#if CONFIG_FSE
+ char *path = NULL;
+ int plen = 0;
+ fse_info finfo;
+
+ if (nfsrv_fsevents_enabled && need_fsevent(FSE_DELETE, dvp)) {
+ plen = MAXPATHLEN;
+ if ((path = get_pathbuff()) && !vn_getpath(vp, path, &plen)) {
+ get_fse_info(vp, &finfo, ctx);
+ } else if (path) {
+ release_pathbuff(path);
+ path = NULL;
+ }
+ }
+#endif /* CONFIG_FSE */
+
+ error = VNOP_RMDIR(dvp, vp, &ni.ni_cnd, ctx);
+
+#if CONFIG_FSE
+ if (path) {
+ if (!error) {
+ add_fsevent(FSE_DELETE, ctx,
+ FSE_ARG_STRING, plen, path,
+ FSE_ARG_FINFO, &finfo,
+ FSE_ARG_DONE);
+ }
+ release_pathbuff(path);
+ }
+#endif /* CONFIG_FSE */
+ }
+out:
+ /*
+ * nameidone has to happen before we vnode_put(dvp)
+ * since it may need to release the fs_nodelock on the dvp
+ */
+ nameidone(&ni);
+
+ vnode_put(dvp);
+ vnode_put(vp);
+
+ if (dirp) {
+ nfsm_srv_vattr_init(&dpostattr, nd->nd_vers);
+ dpostattrerr = vnode_getattr(dirp, &dpostattr, ctx);
+ vnode_put(dirp);
+ dirp = NULL;
+ }
+
+nfsmerr:
+ /* assemble reply */
+ nd->nd_repstat = error;
+ error = nfsrv_rephead(nd, slp, &nmrep, NFSX_WCCDATA(nd->nd_vers));
+ nfsmout_if(error);
+ *mrepp = nmrep.nmc_mhead;
+ nfsmout_on_status(nd, error);
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_chain_add_wcc_data(error, nd, &nmrep,
+ dpreattrerr, &dpreattr, dpostattrerr, &dpostattr);
}
+nfsmout:
+ nfsm_chain_build_done(error, &nmrep);
if (dirp) {
- diraft_ret = VOP_GETATTR(dirp, &diraft, cred, procp);
- vrele(dirp);
+ vnode_put(dirp);
}
- nfsm_reply(NFSX_WCCDATA(v3));
- if (v3) {
- nfsm_srvwcc_data(dirfor_ret, &dirfor, diraft_ret, &diraft);
- return (0);
+ if (error) {
+ nfsm_chain_cleanup(&nmrep);
+ *mrepp = NULL;
}
- nfsm_srvdone;
+ return error;
}
/*
* nfs readdir service
* - mallocs what it thinks is enough to read
* count rounded up to a multiple of NFS_DIRBLKSIZ <= NFS_MAXREADDIR
- * - calls VOP_READDIR()
+ * - calls VNOP_READDIR()
* - loops around building the reply
* if the output generated exceeds count break out of loop
* The nfsm_clget macro is used here so that the reply will be packed
* tightly in mbuf clusters.
- * - it only knows that it has encountered eof when the VOP_READDIR()
+ * - it only knows that it has encountered eof when the VNOP_READDIR()
* reads nothing
* - as such one readdir rpc will return eof false although you are there
* and then the next will return eof
* - it trims out records with d_fileno == 0
* this doesn't matter for Unix clients, but they might confuse clients
* for other os'.
- * NB: It is tempting to set eof to true if the VOP_READDIR() reads less
+ * NB: It is tempting to set eof to true if the VNOP_READDIR() reads less
* than requested, but this may not apply to all filesystems. For
* example, client NFS does not { although it is never remote mounted
* anyhow }
* the EOF flag. For readdirplus, the maxcount is the same, and the
* dircount includes all that except for the entry attributes and handles.
*/
-struct flrep {
- nfsuint64 fl_off;
- u_long fl_postopok;
- u_long fl_fattr[NFSX_V3FATTR / sizeof (u_long)];
- u_long fl_fhok;
- u_long fl_fhsize;
- u_long fl_nfh[NFSX_V3FH / sizeof (u_long)];
-};
-
int
-nfsrv_readdir(nfsd, slp, procp, mrq)
- struct nfsrv_descript *nfsd;
- struct nfssvc_sock *slp;
- struct proc *procp;
- struct mbuf **mrq;
+nfsrv_readdir(
+ struct nfsrv_descript *nd,
+ struct nfsrv_sock *slp,
+ vfs_context_t ctx,
+ mbuf_t *mrepp)
{
- struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
- struct mbuf *nam = nfsd->nd_nam;
- caddr_t dpos = nfsd->nd_dpos;
- struct ucred *cred = &nfsd->nd_cr;
- register char *bp, *be;
- register struct mbuf *mp;
- register struct dirent *dp;
- register caddr_t cp;
- register u_long *tl;
- register long t1;
- caddr_t bpos;
- struct mbuf *mb, *mb2, *mreq, *mp2;
- char *cpos, *cend, *cp2, *rbuf;
- struct vnode *vp;
- struct vattr at;
- nfsfh_t nfh;
- fhandle_t *fhp;
- struct uio io;
- struct iovec iv;
- int len, nlen, rem, xfer, tsiz, i, error = 0, getret = 1;
- int siz, cnt, fullsiz, eofflag, rdonly, cache, ncookies = 0;
- int v3 = (nfsd->nd_flag & ND_NFSV3);
- u_quad_t frev, off, toff, verf;
- u_long *cookies = NULL, *cookiep;
-
- fhp = &nfh.fh_generic;
- nfsm_srvmtofh(fhp);
- if (v3) {
- nfsm_dissect(tl, u_long *, 5 * NFSX_UNSIGNED);
- fxdr_hyper(tl, &toff);
- tl += 2;
- fxdr_hyper(tl, &verf);
- tl += 2;
+ struct direntry *dp;
+ char *cpos, *cend, *rbuf;
+ vnode_t vp;
+ struct vnode_attr attr;
+ struct nfs_filehandle nfh;
+ struct nfs_export *nx;
+ struct nfs_export_options *nxo;
+ uio_t auio = NULL;
+ char uio_buf[UIO_SIZEOF(1)];
+ int len, nlen, rem, xfer, error, attrerr;
+ int siz, count, fullsiz, eofflag, nentries;
+ u_quad_t off, toff, verf = 0;
+ int vnopflag;
+ struct nfsm_chain *nmreq, nmrep;
+
+ error = 0;
+ attrerr = ENOENT;
+ count = nentries = 0;
+ nmreq = &nd->nd_nmreq;
+ nfsm_chain_null(&nmrep);
+ rbuf = NULL;
+ vp = NULL;
+
+ vnopflag = VNODE_READDIR_EXTENDED | VNODE_READDIR_REQSEEKOFF;
+
+ nfsm_chain_get_fh_ptr(error, nmreq, nd->nd_vers, nfh.nfh_fhp, nfh.nfh_len);
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_chain_get_64(error, nmreq, toff);
+ nfsm_chain_get_64(error, nmreq, verf);
} else {
- nfsm_dissect(tl, u_long *, 2 * NFSX_UNSIGNED);
- toff = fxdr_unsigned(u_quad_t, *tl++);
+ nfsm_chain_get_32(error, nmreq, toff);
}
+ nfsm_chain_get_32(error, nmreq, count);
+ nfsmerr_if(error);
+
off = toff;
- cnt = fxdr_unsigned(int, *tl);
- siz = ((cnt + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1));
- xfer = NFS_SRVMAXDATA(nfsd);
- if (siz > xfer)
+ siz = ((count + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1));
+ xfer = NFSRV_NDMAXDATA(nd);
+ if (siz > xfer) {
siz = xfer;
+ }
fullsiz = siz;
- if ((error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
- &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE))) {
- nfsm_reply(NFSX_UNSIGNED);
- nfsm_srvpostop_attr(getret, &at);
- return (0);
- }
- nqsrv_getl(vp, ND_READ);
- if (v3) {
- error = getret = VOP_GETATTR(vp, &at, cred, procp);
- if (!error && toff && verf && verf != at.va_filerev)
+
+ error = nfsrv_fhtovp(&nfh, nd, &vp, &nx, &nxo);
+ nfsmerr_if(error);
+
+ /* update export stats */
+ NFSStatAdd64(&nx->nx_stats.ops, 1);
+
+ /* update active user stats */
+ nfsrv_update_user_stat(nx, nd, kauth_cred_getuid(nd->nd_cr), 1, 0, 0);
+
+ error = nfsrv_credcheck(nd, ctx, nx, nxo);
+ nfsmerr_if(error);
+
+ if (nxo->nxo_flags & NX_MANGLEDNAMES || nd->nd_vers == NFS_VER2) {
+ vnopflag |= VNODE_READDIR_NAMEMAX;
+ }
+
+ if ((nd->nd_vers == NFS_VER2) || (nxo->nxo_flags & NX_32BITCLIENTS)) {
+ vnopflag |= VNODE_READDIR_SEEKOFF32;
+ }
+
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_srv_vattr_init(&attr, NFS_VER3);
+ error = attrerr = vnode_getattr(vp, &attr, ctx);
+ if (!error && toff && verf && (verf != attr.va_filerev)) {
error = NFSERR_BAD_COOKIE;
+ }
}
- if (!error)
- error = nfsrv_access(vp, VEXEC, cred, rdonly, procp, 0);
- if (error) {
- vput(vp);
- nfsm_reply(NFSX_POSTOPATTR(v3));
- nfsm_srvpostop_attr(getret, &at);
- return (0);
+ if (!error) {
+ error = nfsrv_authorize(vp, NULL, KAUTH_VNODE_LIST_DIRECTORY, ctx, nxo, 0);
+ }
+#if CONFIG_MACF
+ if (!error) {
+ if (!error && mac_vnode_check_open(ctx, vp, FREAD)) {
+ error = EACCES;
+ }
+
+ if (!error) {
+ error = mac_vnode_check_readdir(ctx, vp);
+ }
}
- VOP_UNLOCK(vp, 0, procp);
+#endif
+ nfsmerr_if(error);
+
MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK);
+ if (rbuf) {
+ auio = uio_createwithbuffer(1, 0, UIO_SYSSPACE, UIO_READ,
+ &uio_buf[0], sizeof(uio_buf));
+ }
+ if (!rbuf || !auio) {
+ error = ENOMEM;
+ goto nfsmerr;
+ }
again:
- iv.iov_base = rbuf;
- iv.iov_len = fullsiz;
- io.uio_iov = &iv;
- io.uio_iovcnt = 1;
- io.uio_offset = (off_t)off;
- io.uio_resid = fullsiz;
- io.uio_segflg = UIO_SYSSPACE;
- io.uio_rw = UIO_READ;
- io.uio_procp = (struct proc *)0;
+ uio_reset(auio, off, UIO_SYSSPACE, UIO_READ);
+ uio_addiov(auio, CAST_USER_ADDR_T(rbuf), fullsiz);
eofflag = 0;
+ error = VNOP_READDIR(vp, auio, vnopflag, &eofflag, &nentries, ctx);
+ off = uio_offset(auio);
- if (cookies) {
- _FREE((caddr_t)cookies, M_TEMP);
- cookies = NULL;
- }
- if (error = vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, procp)) {
- FREE((caddr_t)rbuf, M_TEMP);
- nfsm_reply(NFSX_POSTOPATTR(v3));
- nfsm_srvpostop_attr(getret, &at);
- return (0);
- }
- error = VOP_READDIR(vp, &io, cred, &eofflag, &ncookies, &cookies);
- off = (off_t)io.uio_offset;
- /*
- * We cannot set the error in the case where there are no cookies
- * and no error, only, as FreeBSD. In the scenario the client is
- * calling us back being told there were "more" entries on last readdir
- * return, and we have no more entries, our VOP_READDIR can give
- * cookies = NULL and no error. This is due to a zero size to MALLOC
- * returning NULL unlike FreeBSD which returns a pointer.
- * With FreeBSD it makes sense if the MALLOC failed and you get in that
- * bind. For us, we need something more. Thus, we should make sure we
- * had some cookies to return, but no pointer and no error for EPERM case.
- * Otherwise, go thru normal processing of sending back the eofflag. This check
- * is also legit on first call to the routine by client since . and ..
- * should be returned. Make same change to nfsrv_readdirplus.
- */
- if ((ncookies != 0) && !cookies && !error)
- error = NFSERR_PERM;
-
- if (v3) {
- getret = VOP_GETATTR(vp, &at, cred, procp);
- if (!error)
- error = getret;
- }
- VOP_UNLOCK(vp, 0, procp);
- if (error) {
- vrele(vp);
- _FREE((caddr_t)rbuf, M_TEMP);
- if (cookies)
- _FREE((caddr_t)cookies, M_TEMP);
- nfsm_reply(NFSX_POSTOPATTR(v3));
- nfsm_srvpostop_attr(getret, &at);
- return (0);
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_srv_vattr_init(&attr, NFS_VER3);
+ attrerr = vnode_getattr(vp, &attr, ctx);
}
- if (io.uio_resid) {
- siz -= io.uio_resid;
+ nfsmerr_if(error);
- /*
- * If nothing read, return eof
- * rpc reply
- */
+ if (uio_resid(auio) != 0) {
+ siz -= uio_resid(auio);
+
+ /* If nothing read, return empty reply with eof set */
if (siz == 0) {
- vrele(vp);
- nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_COOKIEVERF(v3) +
- 2 * NFSX_UNSIGNED);
- if (v3) {
- nfsm_srvpostop_attr(getret, &at);
- nfsm_build(tl, u_long *, 4 * NFSX_UNSIGNED);
- txdr_hyper(&at.va_filerev, tl);
- tl += 2;
- } else
- nfsm_build(tl, u_long *, 2 * NFSX_UNSIGNED);
- *tl++ = nfs_false;
- *tl = nfs_true;
- FREE((caddr_t)rbuf, M_TEMP);
- FREE((caddr_t)cookies, M_TEMP);
- return (0);
+ vnode_put(vp);
+ vp = NULL;
+ FREE(rbuf, M_TEMP);
+ /* assemble reply */
+ nd->nd_repstat = error;
+ error = nfsrv_rephead(nd, slp, &nmrep, NFSX_POSTOPATTR(nd->nd_vers) +
+ NFSX_COOKIEVERF(nd->nd_vers) + 2 * NFSX_UNSIGNED);
+ nfsmout_if(error);
+ *mrepp = nmrep.nmc_mhead;
+ nfsmout_on_status(nd, error);
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_chain_add_postop_attr(error, nd, &nmrep, attrerr, &attr);
+ nfsm_chain_add_64(error, &nmrep, attr.va_filerev);
+ }
+ nfsm_chain_add_32(error, &nmrep, FALSE);
+ nfsm_chain_add_32(error, &nmrep, TRUE);
+ nfsm_chain_build_done(error, &nmrep);
+ return error;
}
}
*/
cpos = rbuf;
cend = rbuf + siz;
- dp = (struct dirent *)cpos;
- cookiep = cookies;
-#ifdef __FreeBSD__
- /*
- * For some reason FreeBSD's ufs_readdir() chooses to back the
- * directory offset up to a block boundary, so it is necessary to
- * skip over the records that preceed the requested offset. This
- * requires the assumption that file offset cookies monotonically
- * increase.
- */
- while (cpos < cend && ncookies > 0 &&
- (dp->d_fileno == 0 || ((u_quad_t)(*cookiep)) <= toff)) {
-#else
- while (dp->d_fileno == 0 && cpos < cend && ncookies > 0) {
-#endif
+ dp = (struct direntry *)cpos;
+ while ((dp->d_fileno == 0) && (cpos < cend) && (nentries > 0)) {
cpos += dp->d_reclen;
- dp = (struct dirent *)cpos;
- cookiep++;
- ncookies--;
+ dp = (struct direntry *)cpos;
+ nentries--;
}
- if (cpos >= cend || ncookies == 0) {
+ if ((cpos >= cend) || (nentries == 0)) {
toff = off;
siz = fullsiz;
goto again;
}
- nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_COOKIEVERF(v3) + siz);
- if (v3) {
- len = NFSX_V3POSTOPATTR + NFSX_V3COOKIEVERF + 2 * NFSX_UNSIGNED;
- nfsm_srvpostop_attr(getret, &at);
- nfsm_build(tl, u_long *, 2 * NFSX_UNSIGNED);
- txdr_hyper(&at.va_filerev, tl);
- } else
- len = 2 * NFSX_UNSIGNED;
- mp = mp2 = mb;
- bp = bpos;
- be = bp + M_TRAILINGSPACE(mp);
+ vnode_put(vp);
+ vp = NULL;
+
+ /* assemble reply */
+ nd->nd_repstat = error;
+ error = nfsrv_rephead(nd, slp, &nmrep, NFSX_POSTOPATTR(nd->nd_vers) +
+ NFSX_COOKIEVERF(nd->nd_vers) + siz);
+ nfsmout_if(error);
+ *mrepp = nmrep.nmc_mhead;
+ nfsmout_on_status(nd, error);
+ nmrep.nmc_flags |= NFSM_CHAIN_FLAG_ADD_CLUSTERS;
+
+ len = 2 * NFSX_UNSIGNED;
+ if (nd->nd_vers == NFS_VER3) {
+ len += NFSX_V3POSTOPATTR + NFSX_V3COOKIEVERF;
+ nfsm_chain_add_postop_attr(error, nd, &nmrep, attrerr, &attr);
+ nfsm_chain_add_64(error, &nmrep, attr.va_filerev);
+ nfsmerr_if(error);
+ }
/* Loop through the records and build reply */
- while (cpos < cend && ncookies > 0) {
+ while ((cpos < cend) && (nentries > 0)) {
if (dp->d_fileno != 0) {
nlen = dp->d_namlen;
- rem = nfsm_rndup(nlen)-nlen;
+ if ((nd->nd_vers == NFS_VER2) && (nlen > NFS_MAXNAMLEN)) {
+ nlen = NFS_MAXNAMLEN;
+ }
+ rem = nfsm_rndup(nlen) - nlen;
len += (4 * NFSX_UNSIGNED + nlen + rem);
- if (v3)
+ if (nd->nd_vers == NFS_VER3) {
len += 2 * NFSX_UNSIGNED;
- if (len > cnt) {
+ }
+ if (len > count) {
eofflag = 0;
break;
}
- /*
- * Build the directory record xdr from
- * the dirent entry.
- */
- nfsm_clget;
- *tl = nfs_true;
- bp += NFSX_UNSIGNED;
- if (v3) {
- nfsm_clget;
- *tl = 0;
- bp += NFSX_UNSIGNED;
- }
- nfsm_clget;
- *tl = txdr_unsigned(dp->d_fileno);
- bp += NFSX_UNSIGNED;
- nfsm_clget;
- *tl = txdr_unsigned(nlen);
- bp += NFSX_UNSIGNED;
-
- /* And loop around copying the name */
- xfer = nlen;
- cp = dp->d_name;
- while (xfer > 0) {
- nfsm_clget;
- if ((bp+xfer) > be)
- tsiz = be-bp;
- else
- tsiz = xfer;
- bcopy(cp, bp, tsiz);
- bp += tsiz;
- xfer -= tsiz;
- if (xfer > 0)
- cp += tsiz;
- }
- /* And null pad to a long boundary */
- for (i = 0; i < rem; i++)
- *bp++ = '\0';
- nfsm_clget;
-
- /* Finish off the record */
- if (v3) {
- *tl = 0;
- bp += NFSX_UNSIGNED;
- nfsm_clget;
- }
- *tl = txdr_unsigned(*cookiep);
- bp += NFSX_UNSIGNED;
+ /* Build the directory record xdr from the direntry. */
+ nfsm_chain_add_32(error, &nmrep, TRUE);
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_chain_add_64(error, &nmrep, dp->d_fileno);
+ } else {
+ nfsm_chain_add_32(error, &nmrep, dp->d_fileno);
+ }
+ nfsm_chain_add_string(error, &nmrep, dp->d_name, nlen);
+ if (nd->nd_vers == NFS_VER3) {
+ if (vnopflag & VNODE_READDIR_SEEKOFF32) {
+ dp->d_seekoff &= 0x00000000ffffffffULL;
+ }
+ nfsm_chain_add_64(error, &nmrep, dp->d_seekoff);
+ } else {
+ nfsm_chain_add_32(error, &nmrep, dp->d_seekoff);
+ }
+ nfsmerr_if(error);
}
cpos += dp->d_reclen;
- dp = (struct dirent *)cpos;
- cookiep++;
- ncookies--;
- }
- vrele(vp);
- nfsm_clget;
- *tl = nfs_false;
- bp += NFSX_UNSIGNED;
- nfsm_clget;
- if (eofflag)
- *tl = nfs_true;
- else
- *tl = nfs_false;
- bp += NFSX_UNSIGNED;
- if (mp != mb) {
- if (bp < be)
- mp->m_len = bp - mtod(mp, caddr_t);
- } else
- mp->m_len += bp - bpos;
- FREE((caddr_t)rbuf, M_TEMP);
- FREE((caddr_t)cookies, M_TEMP);
- nfsm_srvdone;
+ dp = (struct direntry *)cpos;
+ nentries--;
+ }
+ nfsm_chain_add_32(error, &nmrep, FALSE);
+ nfsm_chain_add_32(error, &nmrep, eofflag ? TRUE : FALSE);
+ FREE(rbuf, M_TEMP);
+ goto nfsmout;
+nfsmerr:
+ if (rbuf) {
+ FREE(rbuf, M_TEMP);
+ }
+ if (vp) {
+ vnode_put(vp);
+ }
+ nd->nd_repstat = error;
+ error = nfsrv_rephead(nd, slp, &nmrep, NFSX_POSTOPATTR(nd->nd_vers));
+ nfsmout_if(error);
+ *mrepp = nmrep.nmc_mhead;
+ nfsmout_on_status(nd, error);
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_chain_add_postop_attr(error, nd, &nmrep, attrerr, &attr);
+ }
+nfsmout:
+ nfsm_chain_build_done(error, &nmrep);
+ if (error) {
+ nfsm_chain_cleanup(&nmrep);
+ *mrepp = NULL;
+ }
+ return error;
}
int
-nfsrv_readdirplus(nfsd, slp, procp, mrq)
- struct nfsrv_descript *nfsd;
- struct nfssvc_sock *slp;
- struct proc *procp;
- struct mbuf **mrq;
+nfsrv_readdirplus(
+ struct nfsrv_descript *nd,
+ struct nfsrv_sock *slp,
+ vfs_context_t ctx,
+ mbuf_t *mrepp)
{
- struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
- struct mbuf *nam = nfsd->nd_nam;
- caddr_t dpos = nfsd->nd_dpos;
- struct ucred *cred = &nfsd->nd_cr;
- register char *bp, *be;
- register struct mbuf *mp;
- register struct dirent *dp;
- register caddr_t cp;
- register u_long *tl;
- register long t1;
- caddr_t bpos;
- struct mbuf *mb, *mb2, *mreq, *mp2;
- char *cpos, *cend, *cp2, *rbuf;
- struct vnode *vp, *nvp;
- struct flrep fl;
- nfsfh_t nfh;
- fhandle_t *fhp, *nfhp = (fhandle_t *)fl.fl_nfh;
- struct uio io;
- struct iovec iv;
- struct vattr va, at, *vap = &va;
- struct nfs_fattr *fp;
- int len, nlen, rem, xfer, tsiz, i, error = 0, getret = 1;
- int siz, cnt, fullsiz, eofflag, rdonly, cache, dirlen, ncookies = 0;
- u_quad_t frev, off, toff, verf;
- u_long *cookies = NULL, *cookiep;
- void *file;
-
- fhp = &nfh.fh_generic;
- nfsm_srvmtofh(fhp);
- nfsm_dissect(tl, u_long *, 6 * NFSX_UNSIGNED);
- fxdr_hyper(tl, &toff);
- tl += 2;
- fxdr_hyper(tl, &verf);
- tl += 2;
- siz = fxdr_unsigned(int, *tl++);
- cnt = fxdr_unsigned(int, *tl);
+ struct direntry *dp;
+ char *cpos, *cend, *rbuf;
+ vnode_t vp, nvp;
+ struct nfs_filehandle dnfh, nfh;
+ struct nfs_export *nx;
+ struct nfs_export_options *nxo;
+ uio_t auio = NULL;
+ char uio_buf[UIO_SIZEOF(1)];
+ struct vnode_attr attr, va, *vap = &va;
+ int len, nlen, rem, xfer, error, attrerr, gotfh, gotattr;
+ int siz, dircount, maxcount, fullsiz, eofflag, dirlen, nentries, isdotdot;
+ u_quad_t off, toff, verf;
+ int vnopflag;
+ struct nfsm_chain *nmreq, nmrep;
+
+ error = 0;
+ attrerr = ENOENT;
+ nentries = 0;
+ nmreq = &nd->nd_nmreq;
+ nfsm_chain_null(&nmrep);
+ rbuf = NULL;
+ vp = NULL;
+ dircount = maxcount = 0;
+
+ vnopflag = VNODE_READDIR_EXTENDED | VNODE_READDIR_REQSEEKOFF;
+
+ nfsm_chain_get_fh_ptr(error, nmreq, nd->nd_vers, dnfh.nfh_fhp, dnfh.nfh_len);
+ nfsm_chain_get_64(error, nmreq, toff);
+ nfsm_chain_get_64(error, nmreq, verf);
+ nfsm_chain_get_32(error, nmreq, dircount);
+ nfsm_chain_get_32(error, nmreq, maxcount);
+ nfsmerr_if(error);
+
off = toff;
- siz = ((siz + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1));
- xfer = NFS_SRVMAXDATA(nfsd);
- if (siz > xfer)
- siz = xfer;
- fullsiz = siz;
- if ((error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
- &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE))) {
- nfsm_reply(NFSX_UNSIGNED);
- nfsm_srvpostop_attr(getret, &at);
- return (0);
- }
- error = getret = VOP_GETATTR(vp, &at, cred, procp);
- if (!error && toff && verf && verf != at.va_filerev)
+ xfer = NFSRV_NDMAXDATA(nd);
+ dircount = ((dircount + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1));
+ if (dircount > xfer) {
+ dircount = xfer;
+ }
+ fullsiz = siz = dircount;
+ maxcount = ((maxcount + DIRBLKSIZ - 1) & ~(DIRBLKSIZ - 1));
+ if (maxcount > xfer) {
+ maxcount = xfer;
+ }
+
+ error = nfsrv_fhtovp(&dnfh, nd, &vp, &nx, &nxo);
+ nfsmerr_if(error);
+
+ /* update export stats */
+ NFSStatAdd64(&nx->nx_stats.ops, 1);
+
+ /* update active user stats */
+ nfsrv_update_user_stat(nx, nd, kauth_cred_getuid(nd->nd_cr), 1, 0, 0);
+
+ error = nfsrv_credcheck(nd, ctx, nx, nxo);
+ nfsmerr_if(error);
+
+ if (nxo->nxo_flags & NX_32BITCLIENTS) {
+ vnopflag |= VNODE_READDIR_SEEKOFF32;
+ }
+
+ if (nxo->nxo_flags & NX_MANGLEDNAMES) {
+ vnopflag |= VNODE_READDIR_NAMEMAX;
+ }
+
+ nfsm_srv_vattr_init(&attr, NFS_VER3);
+ error = attrerr = vnode_getattr(vp, &attr, ctx);
+ if (!error && toff && verf && (verf != attr.va_filerev)) {
error = NFSERR_BAD_COOKIE;
+ }
if (!error) {
- nqsrv_getl(vp, ND_READ);
- error = nfsrv_access(vp, VEXEC, cred, rdonly, procp, 0);
+ error = nfsrv_authorize(vp, NULL, KAUTH_VNODE_LIST_DIRECTORY, ctx, nxo, 0);
}
- if (error) {
- vput(vp);
- nfsm_reply(NFSX_V3POSTOPATTR);
- nfsm_srvpostop_attr(getret, &at);
- return (0);
+#if CONFIG_MACF
+ if (!error) {
+ if (!error && mac_vnode_check_open(ctx, vp, FREAD)) {
+ error = EACCES;
+ }
+
+ if (!error) {
+ error = mac_vnode_check_readdir(ctx, vp);
+ }
}
- VOP_UNLOCK(vp, 0, procp);
+#endif
+ nfsmerr_if(error);
+
MALLOC(rbuf, caddr_t, siz, M_TEMP, M_WAITOK);
+ if (rbuf) {
+ auio = uio_createwithbuffer(1, 0, UIO_SYSSPACE, UIO_READ,
+ &uio_buf[0], sizeof(uio_buf));
+ }
+ if (!rbuf || !auio) {
+ error = ENOMEM;
+ goto nfsmerr;
+ }
+
again:
- iv.iov_base = rbuf;
- iv.iov_len = fullsiz;
- io.uio_iov = &iv;
- io.uio_iovcnt = 1;
- io.uio_offset = (off_t)off;
- io.uio_resid = fullsiz;
- io.uio_segflg = UIO_SYSSPACE;
- io.uio_rw = UIO_READ;
- io.uio_procp = (struct proc *)0;
+ uio_reset(auio, off, UIO_SYSSPACE, UIO_READ);
+ uio_addiov(auio, CAST_USER_ADDR_T(rbuf), fullsiz);
eofflag = 0;
- if (cookies) {
- _FREE((caddr_t)cookies, M_TEMP);
- cookies = NULL;
- }
- if (error = vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, procp)) {
- FREE((caddr_t)rbuf, M_TEMP);
- nfsm_reply(NFSX_V3POSTOPATTR);
- nfsm_srvpostop_attr(getret, &at);
- return (0);
- }
- error = VOP_READDIR(vp, &io, cred, &eofflag, &ncookies, &cookies);
- off = (u_quad_t)io.uio_offset;
- getret = VOP_GETATTR(vp, &at, cred, procp);
- VOP_UNLOCK(vp, 0, procp);
- /*
- * See nfsrv_readdir comment above on this
- */
- if ((ncookies != 0) && !cookies && !error)
- error = NFSERR_PERM;
-
- if (!error)
- error = getret;
- if (error) {
- vrele(vp);
- if (cookies)
- _FREE((caddr_t)cookies, M_TEMP);
- _FREE((caddr_t)rbuf, M_TEMP);
- nfsm_reply(NFSX_V3POSTOPATTR);
- nfsm_srvpostop_attr(getret, &at);
- return (0);
- }
- if (io.uio_resid) {
- siz -= io.uio_resid;
+ error = VNOP_READDIR(vp, auio, vnopflag, &eofflag, &nentries, ctx);
+ off = uio_offset(auio);
+ nfsm_srv_vattr_init(&attr, NFS_VER3);
+ attrerr = vnode_getattr(vp, &attr, ctx);
+ nfsmerr_if(error);
- /*
- * If nothing read, return eof
- * rpc reply
- */
+ if (uio_resid(auio) != 0) {
+ siz -= uio_resid(auio);
+
+ /* If nothing read, return empty reply with eof set */
if (siz == 0) {
- vrele(vp);
- nfsm_reply(NFSX_V3POSTOPATTR + NFSX_V3COOKIEVERF +
- 2 * NFSX_UNSIGNED);
- nfsm_srvpostop_attr(getret, &at);
- nfsm_build(tl, u_long *, 4 * NFSX_UNSIGNED);
- txdr_hyper(&at.va_filerev, tl);
- tl += 2;
- *tl++ = nfs_false;
- *tl = nfs_true;
- FREE((caddr_t)cookies, M_TEMP);
- FREE((caddr_t)rbuf, M_TEMP);
- return (0);
+ vnode_put(vp);
+ vp = NULL;
+ FREE(rbuf, M_TEMP);
+ /* assemble reply */
+ nd->nd_repstat = error;
+ error = nfsrv_rephead(nd, slp, &nmrep, NFSX_V3POSTOPATTR +
+ NFSX_V3COOKIEVERF + 2 * NFSX_UNSIGNED);
+ nfsmout_if(error);
+ *mrepp = nmrep.nmc_mhead;
+ nfsmout_on_status(nd, error);
+ nfsm_chain_add_postop_attr(error, nd, &nmrep, attrerr, &attr);
+ nfsm_chain_add_64(error, &nmrep, attr.va_filerev);
+ nfsm_chain_add_32(error, &nmrep, FALSE);
+ nfsm_chain_add_32(error, &nmrep, TRUE);
+ nfsm_chain_build_done(error, &nmrep);
+ return error;
}
}
*/
cpos = rbuf;
cend = rbuf + siz;
- dp = (struct dirent *)cpos;
- cookiep = cookies;
-#ifdef __FreeBSD__
- /*
- * For some reason FreeBSD's ufs_readdir() chooses to back the
- * directory offset up to a block boundary, so it is necessary to
- * skip over the records that preceed the requested offset. This
- * requires the assumption that file offset cookies monotonically
- * increase.
- */
- while (cpos < cend && ncookies > 0 &&
- (dp->d_fileno == 0 || ((u_quad_t)(*cookiep)) <= toff)) {
-#else
- while (dp->d_fileno == 0 && cpos < cend && ncookies > 0) {
-#endif
+ dp = (struct direntry *)cpos;
+ while ((dp->d_fileno == 0) && (cpos < cend) && (nentries > 0)) {
cpos += dp->d_reclen;
- dp = (struct dirent *)cpos;
- cookiep++;
- ncookies--;
+ dp = (struct direntry *)cpos;
+ nentries--;
}
- if (cpos >= cend || ncookies == 0) {
+ if ((cpos >= cend) || (nentries == 0)) {
toff = off;
siz = fullsiz;
goto again;
/*
* Probe one of the directory entries to see if the filesystem
- * supports VGET. See later comment for VFS_VGET changes.
+ * supports VGET.
*/
- if (vp->v_tag == VT_UFS)
- file = (void *) dp->d_fileno;
- else {
- file = &dp->d_fileno;
- }
-
- if (error = VFS_VGET(vp->v_mount, file, &nvp)) {
- if (error == EOPNOTSUPP) /* let others get passed back */
- error = NFSERR_NOTSUPP;
- vrele(vp);
- _FREE((caddr_t)cookies, M_TEMP);
- _FREE((caddr_t)rbuf, M_TEMP);
- nfsm_reply(NFSX_V3POSTOPATTR);
- nfsm_srvpostop_attr(getret, &at);
- return (0);
- }
- vput(nvp);
-
+ if ((error = VFS_VGET(vnode_mount(vp), (ino64_t)dp->d_fileno, &nvp, ctx))) {
+ if (error == ENOTSUP) { /* let others get passed back */
+ error = NFSERR_NOTSUPP;
+ }
+ goto nfsmerr;
+ }
+ vnode_put(nvp);
+
+ /* assemble reply */
+ nd->nd_repstat = error;
+ error = nfsrv_rephead(nd, slp, &nmrep, maxcount);
+ nfsmout_if(error);
+ *mrepp = nmrep.nmc_mhead;
+ nfsmout_on_status(nd, error);
+ nmrep.nmc_flags |= NFSM_CHAIN_FLAG_ADD_CLUSTERS;
+
dirlen = len = NFSX_V3POSTOPATTR + NFSX_V3COOKIEVERF + 2 * NFSX_UNSIGNED;
- nfsm_reply(cnt);
- nfsm_srvpostop_attr(getret, &at);
- nfsm_build(tl, u_long *, 2 * NFSX_UNSIGNED);
- txdr_hyper(&at.va_filerev, tl);
- mp = mp2 = mb;
- bp = bpos;
- be = bp + M_TRAILINGSPACE(mp);
+ nfsm_chain_add_postop_attr(error, nd, &nmrep, attrerr, &attr);
+ nfsm_chain_add_64(error, &nmrep, attr.va_filerev);
+ nfsmerr_if(error);
/* Loop through the records and build reply */
- while (cpos < cend && ncookies > 0) {
+ while ((cpos < cend) && (nentries > 0)) {
if (dp->d_fileno != 0) {
nlen = dp->d_namlen;
- rem = nfsm_rndup(nlen)-nlen;
-
- /*
- * Got to get the vnode for lookup per entry.
- * HFS+/volfs and others use address of file identifier to VGET
- * UFS, nullfs, umapfs use inode (u_int32_t)
- * until they are consistent, we must differentiate now.
- * UFS is the only one of the latter class that is exported.
- * Note this will be pulled out as we resolve the VGET issue
- * of which it should use u_in32_t or addresses.
- */
-
- if (vp->v_tag == VT_UFS)
- file = (void *) dp->d_fileno;
- else
- file = &dp->d_fileno;
-
- if (VFS_VGET(vp->v_mount, file, &nvp))
- goto invalid;
- bzero((caddr_t)nfhp, NFSX_V3FH);
- nfhp->fh_fsid =
- nvp->v_mount->mnt_stat.f_fsid;
- if (VFS_VPTOFH(nvp, &nfhp->fh_fid)) {
- vput(nvp);
- goto invalid;
- }
- if (VOP_GETATTR(nvp, vap, cred, procp)) {
- vput(nvp);
- goto invalid;
- }
- vput(nvp);
+ rem = nfsm_rndup(nlen) - nlen;
+ gotfh = gotattr = 1;
+
+ /* Got to get the vnode for lookup per entry. */
+ if (VFS_VGET(vnode_mount(vp), (ino64_t)dp->d_fileno, &nvp, ctx)) {
+ /* Can't get the vnode... so no fh or attrs */
+ gotfh = gotattr = 0;
+ } else {
+ isdotdot = ((dp->d_namlen == 2) &&
+ (dp->d_name[0] == '.') && (dp->d_name[1] == '.'));
+ if (nfsrv_vptofh(nx, 0, (isdotdot ? &dnfh : NULL), nvp, ctx, &nfh)) {
+ gotfh = 0;
+ }
+ nfsm_srv_vattr_init(vap, NFS_VER3);
+ if (vnode_getattr(nvp, vap, ctx)) {
+ gotattr = 0;
+ }
+ vnode_put(nvp);
+ }
/*
* If either the dircount or maxcount will be
* are calculated conservatively, including all
* XDR overheads.
*/
- len += (8 * NFSX_UNSIGNED + nlen + rem + NFSX_V3FH +
- NFSX_V3POSTOPATTR);
- dirlen += (6 * NFSX_UNSIGNED + nlen + rem);
- if (len > cnt || dirlen > fullsiz) {
+ len += 8 * NFSX_UNSIGNED + nlen + rem;
+ if (gotattr) {
+ len += NFSX_V3FATTR;
+ }
+ if (gotfh) {
+ len += NFSX_UNSIGNED + nfsm_rndup(nfh.nfh_len);
+ }
+ dirlen += 6 * NFSX_UNSIGNED + nlen + rem;
+ if ((len > maxcount) || (dirlen > dircount)) {
eofflag = 0;
break;
}
- /*
- * Build the directory record xdr from
- * the dirent entry.
- */
- fp = (struct nfs_fattr *)&fl.fl_fattr;
- nfsm_srvfillattr(vap, fp);
- fl.fl_fhsize = txdr_unsigned(NFSX_V3FH);
- fl.fl_fhok = nfs_true;
- fl.fl_postopok = nfs_true;
- fl.fl_off.nfsuquad[0] = 0;
- fl.fl_off.nfsuquad[1] = txdr_unsigned(*cookiep);
-
- nfsm_clget;
- *tl = nfs_true;
- bp += NFSX_UNSIGNED;
- nfsm_clget;
- *tl = 0;
- bp += NFSX_UNSIGNED;
- nfsm_clget;
- *tl = txdr_unsigned(dp->d_fileno);
- bp += NFSX_UNSIGNED;
- nfsm_clget;
- *tl = txdr_unsigned(nlen);
- bp += NFSX_UNSIGNED;
-
- /* And loop around copying the name */
- xfer = nlen;
- cp = dp->d_name;
- while (xfer > 0) {
- nfsm_clget;
- if ((bp + xfer) > be)
- tsiz = be - bp;
- else
- tsiz = xfer;
- bcopy(cp, bp, tsiz);
- bp += tsiz;
- xfer -= tsiz;
- if (xfer > 0)
- cp += tsiz;
- }
- /* And null pad to a long boundary */
- for (i = 0; i < rem; i++)
- *bp++ = '\0';
-
- /*
- * Now copy the flrep structure out.
- */
- xfer = sizeof (struct flrep);
- cp = (caddr_t)&fl;
- while (xfer > 0) {
- nfsm_clget;
- if ((bp + xfer) > be)
- tsiz = be - bp;
- else
- tsiz = xfer;
- bcopy(cp, bp, tsiz);
- bp += tsiz;
- xfer -= tsiz;
- if (xfer > 0)
- cp += tsiz;
- }
- }
-invalid:
+ /* Build the directory record xdr from the direntry. */
+ nfsm_chain_add_32(error, &nmrep, TRUE);
+ nfsm_chain_add_64(error, &nmrep, dp->d_fileno);
+ nfsm_chain_add_string(error, &nmrep, dp->d_name, nlen);
+ if (vnopflag & VNODE_READDIR_SEEKOFF32) {
+ dp->d_seekoff &= 0x00000000ffffffffULL;
+ }
+ nfsm_chain_add_64(error, &nmrep, dp->d_seekoff);
+ nfsm_chain_add_postop_attr(error, nd, &nmrep, (gotattr ? 0 : ENOENT), vap);
+ if (gotfh) {
+ nfsm_chain_add_postop_fh(error, &nmrep, nfh.nfh_fhp, nfh.nfh_len);
+ } else {
+ nfsm_chain_add_32(error, &nmrep, FALSE);
+ }
+ nfsmerr_if(error);
+ }
cpos += dp->d_reclen;
- dp = (struct dirent *)cpos;
- cookiep++;
- ncookies--;
- }
- vrele(vp);
- nfsm_clget;
- *tl = nfs_false;
- bp += NFSX_UNSIGNED;
- nfsm_clget;
- if (eofflag)
- *tl = nfs_true;
- else
- *tl = nfs_false;
- bp += NFSX_UNSIGNED;
- if (mp != mb) {
- if (bp < be)
- mp->m_len = bp - mtod(mp, caddr_t);
- } else
- mp->m_len += bp - bpos;
- FREE((caddr_t)cookies, M_TEMP);
- FREE((caddr_t)rbuf, M_TEMP);
- nfsm_srvdone;
+ dp = (struct direntry *)cpos;
+ nentries--;
+ }
+ vnode_put(vp);
+ vp = NULL;
+ nfsm_chain_add_32(error, &nmrep, FALSE);
+ nfsm_chain_add_32(error, &nmrep, eofflag ? TRUE : FALSE);
+ FREE(rbuf, M_TEMP);
+ goto nfsmout;
+nfsmerr:
+ if (rbuf) {
+ FREE(rbuf, M_TEMP);
+ }
+ nd->nd_repstat = error;
+ error = nfsrv_rephead(nd, slp, &nmrep, NFSX_V3POSTOPATTR);
+ nfsmout_if(error);
+ *mrepp = nmrep.nmc_mhead;
+ nfsmout_on_status(nd, error);
+ nfsm_chain_add_postop_attr(error, nd, &nmrep, attrerr, &attr);
+nfsmout:
+ nfsm_chain_build_done(error, &nmrep);
+ if (vp) {
+ vnode_put(vp);
+ }
+ if (error) {
+ nfsm_chain_cleanup(&nmrep);
+ *mrepp = NULL;
+ }
+ return error;
}
/*
* nfs commit service
*/
int
-nfsrv_commit(nfsd, slp, procp, mrq)
- struct nfsrv_descript *nfsd;
- struct nfssvc_sock *slp;
- struct proc *procp;
- struct mbuf **mrq;
+nfsrv_commit(
+ struct nfsrv_descript *nd,
+ struct nfsrv_sock *slp,
+ vfs_context_t ctx,
+ mbuf_t *mrepp)
{
- struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
- struct mbuf *nam = nfsd->nd_nam;
- caddr_t dpos = nfsd->nd_dpos;
- struct ucred *cred = &nfsd->nd_cr;
- struct vattr bfor, aft;
- struct vnode *vp;
- nfsfh_t nfh;
- fhandle_t *fhp;
- register u_long *tl;
- register long t1;
- caddr_t bpos;
- int error = 0, rdonly, for_ret = 1, aft_ret = 1, cnt, cache;
- char *cp2;
- struct mbuf *mb, *mb2, *mreq;
- u_quad_t frev, off;
- int didhold;
-
-#ifndef nolint
- cache = 0;
-#endif
- fhp = &nfh.fh_generic;
- nfsm_srvmtofh(fhp);
- nfsm_dissect(tl, u_long *, 3 * NFSX_UNSIGNED);
+ vnode_t vp;
+ struct nfs_filehandle nfh;
+ struct nfs_export *nx = NULL;
+ struct nfs_export_options *nxo;
+ int error, preattrerr, postattrerr, count;
+ struct vnode_attr preattr, postattr;
+ u_quad_t off;
+ struct nfsm_chain *nmreq, nmrep;
+
+ error = 0;
+ preattrerr = postattrerr = ENOENT;
+ nmreq = &nd->nd_nmreq;
+ nfsm_chain_null(&nmrep);
+ vp = NULL;
/*
- * XXX At this time VOP_FSYNC() does not accept offset and byte
- * count parameters, so these arguments are useless (someday maybe).
+ * XXX At this time VNOP_FSYNC() does not accept offset and byte
+ * count parameters, so those arguments are useless (someday maybe).
*/
- fxdr_hyper(tl, &off);
- tl += 2;
- cnt = fxdr_unsigned(int, *tl);
- if ((error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
- &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE))) {
- nfsm_reply(2 * NFSX_UNSIGNED);
- nfsm_srvwcc_data(for_ret, &bfor, aft_ret, &aft);
- return (0);
- }
- for_ret = VOP_GETATTR(vp, &bfor, cred, procp);
- didhold = ubc_hold(vp);
- error = VOP_FSYNC(vp, cred, MNT_WAIT, procp);
- aft_ret = VOP_GETATTR(vp, &aft, cred, procp);
- VOP_UNLOCK(vp, 0, procp);
- if (didhold)
- ubc_rele(vp);
- vrele(vp);
- nfsm_reply(NFSX_V3WCCDATA + NFSX_V3WRITEVERF);
- nfsm_srvwcc_data(for_ret, &bfor, aft_ret, &aft);
- if (!error) {
- nfsm_build(tl, u_long *, NFSX_V3WRITEVERF);
- *tl++ = txdr_unsigned(boottime.tv_sec);
- *tl = txdr_unsigned(boottime.tv_usec);
- } else
- return (0);
- nfsm_srvdone;
+
+ nfsm_chain_get_fh_ptr(error, nmreq, NFS_VER3, nfh.nfh_fhp, nfh.nfh_len);
+ nfsm_chain_get_64(error, nmreq, off);
+ nfsm_chain_get_32(error, nmreq, count);
+ nfsmerr_if(error);
+
+ error = nfsrv_fhtovp(&nfh, nd, &vp, &nx, &nxo);
+ nfsmerr_if(error);
+
+ /* update export stats */
+ NFSStatAdd64(&nx->nx_stats.ops, 1);
+
+ /* update active user stats */
+ nfsrv_update_user_stat(nx, nd, kauth_cred_getuid(nd->nd_cr), 1, 0, 0);
+
+ error = nfsrv_credcheck(nd, ctx, nx, nxo);
+ nfsmerr_if(error);
+
+ nfsm_srv_pre_vattr_init(&preattr);
+ preattrerr = vnode_getattr(vp, &preattr, ctx);
+
+ error = VNOP_FSYNC(vp, MNT_WAIT, ctx);
+
+ nfsm_srv_vattr_init(&postattr, 1);
+ postattrerr = vnode_getattr(vp, &postattr, ctx);
+
+nfsmerr:
+ if (vp) {
+ vnode_put(vp);
+ }
+
+ /* assemble reply */
+ nd->nd_repstat = error;
+ error = nfsrv_rephead(nd, slp, &nmrep, NFSX_V3WCCDATA + NFSX_V3WRITEVERF);
+ nfsmout_if(error);
+ *mrepp = nmrep.nmc_mhead;
+ nfsmout_on_status(nd, error);
+ nfsm_chain_add_wcc_data(error, nd, &nmrep,
+ preattrerr, &preattr, postattrerr, &postattr);
+ if (!nd->nd_repstat) {
+ nfsm_chain_add_32(error, &nmrep, nx->nx_exptime.tv_sec);
+ nfsm_chain_add_32(error, &nmrep, nx->nx_exptime.tv_usec);
+ }
+nfsmout:
+ nfsm_chain_build_done(error, &nmrep);
+ if (error) {
+ nfsm_chain_cleanup(&nmrep);
+ *mrepp = NULL;
+ }
+ return error;
}
/*
* nfs statfs service
*/
int
-nfsrv_statfs(nfsd, slp, procp, mrq)
- struct nfsrv_descript *nfsd;
- struct nfssvc_sock *slp;
- struct proc *procp;
- struct mbuf **mrq;
+nfsrv_statfs(
+ struct nfsrv_descript *nd,
+ struct nfsrv_sock *slp,
+ vfs_context_t ctx,
+ mbuf_t *mrepp)
{
- struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
- struct mbuf *nam = nfsd->nd_nam;
- caddr_t dpos = nfsd->nd_dpos;
- struct ucred *cred = &nfsd->nd_cr;
- register struct statfs *sf;
- register struct nfs_statfs *sfp;
- register u_long *tl;
- register long t1;
- caddr_t bpos;
- int error = 0, rdonly, cache, getret = 1;
- int v3 = (nfsd->nd_flag & ND_NFSV3);
- char *cp2;
- struct mbuf *mb, *mb2, *mreq;
- struct vnode *vp;
- struct vattr at;
- nfsfh_t nfh;
- fhandle_t *fhp;
- struct statfs statfs;
- u_quad_t frev, tval;
-
-#ifndef nolint
- cache = 0;
-#endif
- fhp = &nfh.fh_generic;
- nfsm_srvmtofh(fhp);
- if ((error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
- &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE))) {
- nfsm_reply(NFSX_UNSIGNED);
- nfsm_srvpostop_attr(getret, &at);
- return (0);
- }
- sf = &statfs;
- error = VFS_STATFS(vp->v_mount, sf, procp);
- getret = VOP_GETATTR(vp, &at, cred, procp);
- vput(vp);
- nfsm_reply(NFSX_POSTOPATTR(v3) + NFSX_STATFS(v3));
- if (v3)
- nfsm_srvpostop_attr(getret, &at);
- if (error)
- return (0);
- nfsm_build(sfp, struct nfs_statfs *, NFSX_STATFS(v3));
- if (v3) {
- tval = (u_quad_t)(unsigned long)sf->f_blocks;
- tval *= (u_quad_t)(unsigned long)sf->f_bsize;
- txdr_hyper(&tval, &sfp->sf_tbytes);
- tval = (u_quad_t)(unsigned long)sf->f_bfree;
- tval *= (u_quad_t)(unsigned long)sf->f_bsize;
- txdr_hyper(&tval, &sfp->sf_fbytes);
- tval = (u_quad_t)(unsigned long)sf->f_bavail;
- tval *= (u_quad_t)(unsigned long)sf->f_bsize;
- txdr_hyper(&tval, &sfp->sf_abytes);
- sfp->sf_tfiles.nfsuquad[0] = 0;
- sfp->sf_tfiles.nfsuquad[1] = txdr_unsigned(sf->f_files);
- sfp->sf_ffiles.nfsuquad[0] = 0;
- sfp->sf_ffiles.nfsuquad[1] = txdr_unsigned(sf->f_ffree);
- sfp->sf_afiles.nfsuquad[0] = 0;
- sfp->sf_afiles.nfsuquad[1] = txdr_unsigned(sf->f_ffree);
- sfp->sf_invarsec = 0;
+ struct vfs_attr va;
+ int error, attrerr;
+ vnode_t vp;
+ struct vnode_attr attr;
+ struct nfs_filehandle nfh;
+ struct nfs_export *nx;
+ struct nfs_export_options *nxo;
+ off_t blksize;
+ struct nfsm_chain *nmreq, nmrep;
+
+ error = 0;
+ attrerr = ENOENT;
+ nmreq = &nd->nd_nmreq;
+ nfsm_chain_null(&nmrep);
+ vp = NULL;
+ blksize = 512;
+
+ nfsm_chain_get_fh_ptr(error, nmreq, nd->nd_vers, nfh.nfh_fhp, nfh.nfh_len);
+ nfsmerr_if(error);
+ error = nfsrv_fhtovp(&nfh, nd, &vp, &nx, &nxo);
+ nfsmerr_if(error);
+
+ /* update export stats */
+ NFSStatAdd64(&nx->nx_stats.ops, 1);
+
+ /* update active user stats */
+ nfsrv_update_user_stat(nx, nd, kauth_cred_getuid(nd->nd_cr), 1, 0, 0);
+
+ error = nfsrv_credcheck(nd, ctx, nx, nxo);
+ nfsmerr_if(error);
+
+ VFSATTR_INIT(&va);
+ VFSATTR_WANTED(&va, f_blocks);
+ VFSATTR_WANTED(&va, f_bfree);
+ VFSATTR_WANTED(&va, f_bavail);
+ VFSATTR_WANTED(&va, f_files);
+ VFSATTR_WANTED(&va, f_ffree);
+ error = vfs_getattr(vnode_mount(vp), &va, ctx);
+ blksize = vnode_mount(vp)->mnt_vfsstat.f_bsize;
+
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_srv_vattr_init(&attr, nd->nd_vers);
+ attrerr = vnode_getattr(vp, &attr, ctx);
+ }
+
+nfsmerr:
+ if (vp) {
+ vnode_put(vp);
+ }
+
+ /* assemble reply */
+ nd->nd_repstat = error;
+ error = nfsrv_rephead(nd, slp, &nmrep, NFSX_POSTOPATTR(nd->nd_vers) + NFSX_STATFS(nd->nd_vers));
+ nfsmout_if(error);
+ *mrepp = nmrep.nmc_mhead;
+ nfsmout_on_status(nd, error);
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_chain_add_postop_attr(error, nd, &nmrep, attrerr, &attr);
+ }
+ nfsmout_if(nd->nd_repstat);
+
+ if (nd->nd_vers == NFS_VER3) {
+ nfsm_chain_add_64(error, &nmrep, va.f_blocks * blksize);
+ nfsm_chain_add_64(error, &nmrep, va.f_bfree * blksize);
+ nfsm_chain_add_64(error, &nmrep, va.f_bavail * blksize);
+ nfsm_chain_add_64(error, &nmrep, va.f_files);
+ nfsm_chain_add_64(error, &nmrep, va.f_ffree);
+ nfsm_chain_add_64(error, &nmrep, va.f_ffree);
+ nfsm_chain_add_32(error, &nmrep, 0); /* invarsec */
} else {
- sfp->sf_tsize = txdr_unsigned(NFS_V2MAXDATA);
- sfp->sf_bsize = txdr_unsigned(sf->f_bsize);
- sfp->sf_blocks = txdr_unsigned(sf->f_blocks);
- sfp->sf_bfree = txdr_unsigned(sf->f_bfree);
- sfp->sf_bavail = txdr_unsigned(sf->f_bavail);
+ nfsm_chain_add_32(error, &nmrep, NFS_V2MAXDATA);
+ nfsm_chain_add_32(error, &nmrep, blksize);
+ nfsm_chain_add_32(error, &nmrep, va.f_blocks);
+ nfsm_chain_add_32(error, &nmrep, va.f_bfree);
+ nfsm_chain_add_32(error, &nmrep, va.f_bavail);
}
- nfsm_srvdone;
+nfsmout:
+ nfsm_chain_build_done(error, &nmrep);
+ if (error) {
+ nfsm_chain_cleanup(&nmrep);
+ *mrepp = NULL;
+ }
+ return error;
}
/*
* nfs fsinfo service
*/
int
-nfsrv_fsinfo(nfsd, slp, procp, mrq)
- struct nfsrv_descript *nfsd;
- struct nfssvc_sock *slp;
- struct proc *procp;
- struct mbuf **mrq;
+nfsrv_fsinfo(
+ struct nfsrv_descript *nd,
+ struct nfsrv_sock *slp,
+ vfs_context_t ctx,
+ mbuf_t *mrepp)
{
- struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
- struct mbuf *nam = nfsd->nd_nam;
- caddr_t dpos = nfsd->nd_dpos;
- struct ucred *cred = &nfsd->nd_cr;
- register u_long *tl;
- register struct nfsv3_fsinfo *sip;
- register long t1;
- caddr_t bpos;
- int error = 0, rdonly, cache, getret = 1, pref, max;
- char *cp2;
- struct mbuf *mb, *mb2, *mreq;
- struct vnode *vp;
- struct vattr at;
- nfsfh_t nfh;
- fhandle_t *fhp;
- u_quad_t frev;
-
-#ifndef nolint
- cache = 0;
-#endif
- fhp = &nfh.fh_generic;
- nfsm_srvmtofh(fhp);
- if ((error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
- &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE))) {
- nfsm_reply(NFSX_UNSIGNED);
- nfsm_srvpostop_attr(getret, &at);
- return (0);
- }
- getret = VOP_GETATTR(vp, &at, cred, procp);
- vput(vp);
- nfsm_reply(NFSX_V3POSTOPATTR + NFSX_V3FSINFO);
- nfsm_srvpostop_attr(getret, &at);
- nfsm_build(sip, struct nfsv3_fsinfo *, NFSX_V3FSINFO);
+ int error, attrerr, prefsize, maxsize;
+ vnode_t vp;
+ struct vnode_attr attr;
+ struct nfs_filehandle nfh;
+ struct nfs_export *nx;
+ struct nfs_export_options *nxo;
+ struct nfsm_chain *nmreq, nmrep;
+
+ error = 0;
+ attrerr = ENOENT;
+ nmreq = &nd->nd_nmreq;
+ nfsm_chain_null(&nmrep);
+ vp = NULL;
+
+ nfsm_chain_get_fh_ptr(error, nmreq, nd->nd_vers, nfh.nfh_fhp, nfh.nfh_len);
+ nfsmerr_if(error);
+ error = nfsrv_fhtovp(&nfh, nd, &vp, &nx, &nxo);
+ nfsmerr_if(error);
+
+ /* update export stats */
+ NFSStatAdd64(&nx->nx_stats.ops, 1);
+
+ /* update active user stats */
+ nfsrv_update_user_stat(nx, nd, kauth_cred_getuid(nd->nd_cr), 1, 0, 0);
+
+ error = nfsrv_credcheck(nd, ctx, nx, nxo);
+ nfsmerr_if(error);
+
+ nfsm_srv_vattr_init(&attr, NFS_VER3);
+ attrerr = vnode_getattr(vp, &attr, ctx);
+
+nfsmerr:
+ if (vp) {
+ vnode_put(vp);
+ }
+
+ /* assemble reply */
+ nd->nd_repstat = error;
+ error = nfsrv_rephead(nd, slp, &nmrep, NFSX_V3POSTOPATTR + NFSX_V3FSINFO);
+ nfsmout_if(error);
+ *mrepp = nmrep.nmc_mhead;
+ nfsmout_on_status(nd, error);
+ nfsm_chain_add_postop_attr(error, nd, &nmrep, attrerr, &attr);
+ nfsmout_if(nd->nd_repstat);
/*
- * XXX
- * There should be file system VFS OP(s) to get this information.
+ * XXX There should be file system VFS OP(s) to get this information.
* For now, assume our usual NFS defaults.
*/
- if (slp->ns_so->so_type == SOCK_DGRAM)
- max = pref = NFS_MAXDGRAMDATA;
- else
- max = pref = NFS_MAXDATA;
- sip->fs_rtmax = txdr_unsigned(max);
- sip->fs_rtpref = txdr_unsigned(pref);
- sip->fs_rtmult = txdr_unsigned(NFS_FABLKSIZE);
- sip->fs_wtmax = txdr_unsigned(max);
- sip->fs_wtpref = txdr_unsigned(pref);
- sip->fs_wtmult = txdr_unsigned(NFS_FABLKSIZE);
- sip->fs_dtpref = txdr_unsigned(pref);
- sip->fs_maxfilesize.nfsuquad[0] = 0xffffffff;
- sip->fs_maxfilesize.nfsuquad[1] = 0xffffffff;
- sip->fs_timedelta.nfsv3_sec = 0;
- sip->fs_timedelta.nfsv3_nsec = txdr_unsigned(1);
- sip->fs_properties = txdr_unsigned(NFSV3FSINFO_LINK |
- NFSV3FSINFO_SYMLINK | NFSV3FSINFO_HOMOGENEOUS |
- NFSV3FSINFO_CANSETTIME);
- nfsm_srvdone;
+ if (slp->ns_sotype == SOCK_DGRAM) {
+ maxsize = NFS_MAXDGRAMDATA;
+ prefsize = NFS_PREFDGRAMDATA;
+ } else {
+ maxsize = prefsize = slp->ns_sobufsize ? slp->ns_sobufsize / 2 : NFSRV_MAXDATA;
+ }
+
+ nfsm_chain_add_32(error, &nmrep, maxsize);
+ nfsm_chain_add_32(error, &nmrep, prefsize);
+ nfsm_chain_add_32(error, &nmrep, NFS_FABLKSIZE);
+ nfsm_chain_add_32(error, &nmrep, maxsize);
+ nfsm_chain_add_32(error, &nmrep, prefsize);
+ nfsm_chain_add_32(error, &nmrep, NFS_FABLKSIZE);
+ nfsm_chain_add_32(error, &nmrep, prefsize);
+ nfsm_chain_add_64(error, &nmrep, 0xffffffffffffffffULL);
+ nfsm_chain_add_32(error, &nmrep, 0);
+ nfsm_chain_add_32(error, &nmrep, 1);
+ /* XXX link/symlink support should be taken from volume capabilities */
+ nfsm_chain_add_32(error, &nmrep,
+ NFSV3FSINFO_LINK | NFSV3FSINFO_SYMLINK |
+ NFSV3FSINFO_HOMOGENEOUS | NFSV3FSINFO_CANSETTIME);
+
+nfsmout:
+ nfsm_chain_build_done(error, &nmrep);
+ if (error) {
+ nfsm_chain_cleanup(&nmrep);
+ *mrepp = NULL;
+ }
+ return error;
}
/*
* nfs pathconf service
*/
int
-nfsrv_pathconf(nfsd, slp, procp, mrq)
- struct nfsrv_descript *nfsd;
- struct nfssvc_sock *slp;
- struct proc *procp;
- struct mbuf **mrq;
+nfsrv_pathconf(
+ struct nfsrv_descript *nd,
+ struct nfsrv_sock *slp,
+ vfs_context_t ctx,
+ mbuf_t *mrepp)
{
- struct mbuf *mrep = nfsd->nd_mrep, *md = nfsd->nd_md;
- struct mbuf *nam = nfsd->nd_nam;
- caddr_t dpos = nfsd->nd_dpos;
- struct ucred *cred = &nfsd->nd_cr;
- register u_long *tl;
- register struct nfsv3_pathconf *pc;
- register long t1;
- caddr_t bpos;
- int error = 0, rdonly, cache, getret = 1, linkmax, namemax;
- int chownres, notrunc, case_sensitive, case_preserving;
- char *cp2;
- struct mbuf *mb, *mb2, *mreq;
- struct vnode *vp;
- struct vattr at;
- nfsfh_t nfh;
- fhandle_t *fhp;
- u_quad_t frev;
-
-#ifndef nolint
- cache = 0;
-#endif
- fhp = &nfh.fh_generic;
- nfsm_srvmtofh(fhp);
- if ((error = nfsrv_fhtovp(fhp, 1, &vp, cred, slp, nam,
- &rdonly, (nfsd->nd_flag & ND_KERBAUTH), TRUE))) {
- nfsm_reply(NFSX_UNSIGNED);
- nfsm_srvpostop_attr(getret, &at);
- return (0);
- }
- error = VOP_PATHCONF(vp, _PC_LINK_MAX, &linkmax);
- if (!error)
- error = VOP_PATHCONF(vp, _PC_NAME_MAX, &namemax);
- if (!error)
- error = VOP_PATHCONF(vp, _PC_CHOWN_RESTRICTED, &chownres);
- if (!error)
- error = VOP_PATHCONF(vp, _PC_NO_TRUNC, ¬runc);
- if (!error)
- error = VOP_PATHCONF(vp, _PC_CASE_SENSITIVE, &case_sensitive);
- if (!error)
- error = VOP_PATHCONF(vp, _PC_CASE_PRESERVING, &case_preserving);
- getret = VOP_GETATTR(vp, &at, cred, procp);
- vput(vp);
- nfsm_reply(NFSX_V3POSTOPATTR + NFSX_V3PATHCONF);
- nfsm_srvpostop_attr(getret, &at);
- if (error)
- return (0);
- nfsm_build(pc, struct nfsv3_pathconf *, NFSX_V3PATHCONF);
-
- pc->pc_linkmax = txdr_unsigned(linkmax);
- pc->pc_namemax = txdr_unsigned(namemax);
- pc->pc_notrunc = txdr_unsigned(notrunc);
- pc->pc_chownrestricted = txdr_unsigned(chownres);
- pc->pc_caseinsensitive = txdr_unsigned(!case_sensitive);
- pc->pc_casepreserving = txdr_unsigned(case_preserving);
-
- nfsm_srvdone;
+ int error, attrerr, linkmax = 0, namemax = 0;
+ int chownres = 0, notrunc = 0, case_sensitive = 0, case_preserving = 0;
+ vnode_t vp;
+ struct vnode_attr attr;
+ struct nfs_filehandle nfh;
+ struct nfs_export *nx;
+ struct nfs_export_options *nxo;
+ struct nfsm_chain *nmreq, nmrep;
+
+ error = 0;
+ attrerr = ENOENT;
+ nmreq = &nd->nd_nmreq;
+ nfsm_chain_null(&nmrep);
+ vp = NULL;
+
+ nfsm_chain_get_fh_ptr(error, nmreq, nd->nd_vers, nfh.nfh_fhp, nfh.nfh_len);
+ nfsmerr_if(error);
+ error = nfsrv_fhtovp(&nfh, nd, &vp, &nx, &nxo);
+ nfsmerr_if(error);
+
+ /* update export stats */
+ NFSStatAdd64(&nx->nx_stats.ops, 1);
+
+ /* update active user stats */
+ nfsrv_update_user_stat(nx, nd, kauth_cred_getuid(nd->nd_cr), 1, 0, 0);
+
+ error = nfsrv_credcheck(nd, ctx, nx, nxo);
+ nfsmerr_if(error);
+
+ error = VNOP_PATHCONF(vp, _PC_LINK_MAX, &linkmax, ctx);
+ if (!error) {
+ error = VNOP_PATHCONF(vp, _PC_NAME_MAX, &namemax, ctx);
+ }
+ if (!error) {
+ error = VNOP_PATHCONF(vp, _PC_CHOWN_RESTRICTED, &chownres, ctx);
+ }
+ if (!error) {
+ error = VNOP_PATHCONF(vp, _PC_NO_TRUNC, ¬runc, ctx);
+ }
+ if (!error) {
+ error = VNOP_PATHCONF(vp, _PC_CASE_SENSITIVE, &case_sensitive, ctx);
+ }
+ if (!error) {
+ error = VNOP_PATHCONF(vp, _PC_CASE_PRESERVING, &case_preserving, ctx);
+ }
+
+ nfsm_srv_vattr_init(&attr, NFS_VER3);
+ attrerr = vnode_getattr(vp, &attr, ctx);
+
+nfsmerr:
+ if (vp) {
+ vnode_put(vp);
+ }
+
+ /* assemble reply */
+ nd->nd_repstat = error;
+ error = nfsrv_rephead(nd, slp, &nmrep, NFSX_V3POSTOPATTR + NFSX_V3PATHCONF);
+ nfsmout_if(error);
+ *mrepp = nmrep.nmc_mhead;
+ nfsmout_on_status(nd, error);
+ nfsm_chain_add_postop_attr(error, nd, &nmrep, attrerr, &attr);
+ nfsmout_if(nd->nd_repstat);
+
+ nfsm_chain_add_32(error, &nmrep, linkmax);
+ nfsm_chain_add_32(error, &nmrep, namemax);
+ nfsm_chain_add_32(error, &nmrep, notrunc);
+ nfsm_chain_add_32(error, &nmrep, chownres);
+ nfsm_chain_add_32(error, &nmrep, !case_sensitive);
+ nfsm_chain_add_32(error, &nmrep, case_preserving);
+
+nfsmout:
+ nfsm_chain_build_done(error, &nmrep);
+ if (error) {
+ nfsm_chain_cleanup(&nmrep);
+ *mrepp = NULL;
+ }
+ return error;
}
/*
*/
/* ARGSUSED */
int
-nfsrv_null(nfsd, slp, procp, mrq)
- struct nfsrv_descript *nfsd;
- struct nfssvc_sock *slp;
- struct proc *procp;
- struct mbuf **mrq;
+nfsrv_null(
+ struct nfsrv_descript *nd,
+ struct nfsrv_sock *slp,
+ __unused vfs_context_t ctx,
+ mbuf_t *mrepp)
{
- struct mbuf *mrep = nfsd->nd_mrep;
- caddr_t bpos;
- int error = NFSERR_RETVOID, cache;
- struct mbuf *mb, *mreq;
- u_quad_t frev;
-
-#ifndef nolint
- cache = 0;
-#endif
- nfsm_reply(0);
- return (0);
+ int error = NFSERR_RETVOID;
+ struct nfsm_chain nmrep;
+
+ /*
+ * RPCSEC_GSS context setup ?
+ */
+ if (nd->nd_gss_context) {
+ return nfs_gss_svc_ctx_init(nd, slp, mrepp);
+ }
+
+ nfsm_chain_null(&nmrep);
+
+ /* assemble reply */
+ nd->nd_repstat = error;
+ error = nfsrv_rephead(nd, slp, &nmrep, 0);
+ nfsmout_if(error);
+ *mrepp = nmrep.nmc_mhead;
+nfsmout:
+ nfsm_chain_build_done(error, &nmrep);
+ if (error) {
+ nfsm_chain_cleanup(&nmrep);
+ *mrepp = NULL;
+ }
+ return error;
}
/*
*/
/* ARGSUSED */
int
-nfsrv_noop(nfsd, slp, procp, mrq)
- struct nfsrv_descript *nfsd;
- struct nfssvc_sock *slp;
- struct proc *procp;
- struct mbuf **mrq;
+nfsrv_noop(
+ struct nfsrv_descript *nd,
+ struct nfsrv_sock *slp,
+ __unused vfs_context_t ctx,
+ mbuf_t *mrepp)
{
- struct mbuf *mrep = nfsd->nd_mrep;
- caddr_t bpos;
- int error, cache;
- struct mbuf *mb, *mreq;
- u_quad_t frev;
-
-#ifndef nolint
- cache = 0;
-#endif
- if (nfsd->nd_repstat)
- error = nfsd->nd_repstat;
- else
+ int error;
+ struct nfsm_chain nmrep;
+
+ nfsm_chain_null(&nmrep);
+
+ if (nd->nd_repstat) {
+ error = nd->nd_repstat;
+ } else {
error = EPROCUNAVAIL;
- nfsm_reply(0);
- return (0);
+ }
+
+ /* assemble reply */
+ nd->nd_repstat = error;
+ error = nfsrv_rephead(nd, slp, &nmrep, 0);
+ nfsmout_if(error);
+ *mrepp = nmrep.nmc_mhead;
+nfsmout:
+ nfsm_chain_build_done(error, &nmrep);
+ if (error) {
+ nfsm_chain_cleanup(&nmrep);
+ *mrepp = NULL;
+ }
+ return error;
}
+const nfsrv_proc_t nfsrv_procs[NFS_NPROCS] = {
+ nfsrv_null,
+ nfsrv_getattr,
+ nfsrv_setattr,
+ nfsrv_lookup,
+ nfsrv_access,
+ nfsrv_readlink,
+ nfsrv_read,
+ nfsrv_write,
+ nfsrv_create,
+ nfsrv_mkdir,
+ nfsrv_symlink,
+ nfsrv_mknod,
+ nfsrv_remove,
+ nfsrv_rmdir,
+ nfsrv_rename,
+ nfsrv_link,
+ nfsrv_readdir,
+ nfsrv_readdirplus,
+ nfsrv_statfs,
+ nfsrv_fsinfo,
+ nfsrv_pathconf,
+ nfsrv_commit,
+ nfsrv_noop
+};
+
/*
* Perform access checking for vnodes obtained from file handles that would
* refer to files already opened by a Unix client. You cannot just use
- * vn_writechk() and VOP_ACCESS() for two reasons.
+ * vnode_authorize() for two reasons.
* 1 - You must check for exported rdonly as well as MNT_RDONLY for the write case
* 2 - The owner is to be given access irrespective of mode bits so that
* processes that chmod after opening a file don't break. I don't like
* this because it opens a security hole, but since the nfs server opens
* a security hole the size of a barn door anyhow, what the heck.
-
- * The exception to rule 2 is EPERM. If a file is IMMUTABLE, VOP_ACCESS()
+ *
+ * The exception to rule 2 is EPERM. If a file is IMMUTABLE, vnode_authorize()
* will return EPERM instead of EACCESS. EPERM is always an error.
*/
-static int
-nfsrv_access(vp, flags, cred, rdonly, p, override)
- register struct vnode *vp;
- int flags;
- register struct ucred *cred;
- int rdonly;
- struct proc *p;
- int override;
+int
+nfsrv_authorize(
+ vnode_t vp,
+ vnode_t dvp,
+ kauth_action_t action,
+ vfs_context_t ctx,
+ struct nfs_export_options *nxo,
+ int override)
{
- struct vattr vattr;
+ struct vnode_attr vattr;
int error;
- if (flags & VWRITE) {
- /* Just vn_writechk() changed to check rdonly */
+
+ if (action & KAUTH_VNODE_WRITE_RIGHTS) {
/*
- * Disallow write attempts on read-only file systems;
+ * Disallow write attempts on read-only exports;
* unless the file is a socket or a block or character
* device resident on the file system.
*/
- if (rdonly || (vp->v_mount->mnt_flag & MNT_RDONLY)) {
- switch (vp->v_type) {
+ if (nxo->nxo_flags & NX_READONLY) {
+ switch (vnode_vtype(vp)) {
case VREG: case VDIR: case VLNK: case VCPLX:
- return (EROFS);
+ return EROFS;
+ default:
+ break;
}
}
- /*
- * If there's shared text associated with
- * the inode, we can't allow writing.
- */
- if (vp->v_flag & VTEXT)
- return (ETXTBSY);
- }
- if ((error = VOP_GETATTR(vp, &vattr, cred, p)))
- return (error);
- error = VOP_ACCESS(vp, flags, cred, p);
- /*
- * Allow certain operations for the owner (reads and writes
- * on files that are already open). Picking up from FreeBSD.
- */
- if (override && error == EACCES && cred->cr_uid == vattr.va_uid)
- error = 0;
- return error;
+ }
+ error = vnode_authorize(vp, dvp, action, ctx);
+ /*
+ * Allow certain operations for the owner (reads and writes
+ * on files that are already open). Picking up from FreeBSD.
+ */
+ if (override && (error == EACCES)) {
+ VATTR_INIT(&vattr);
+ VATTR_WANTED(&vattr, va_uid);
+ if ((vnode_getattr(vp, &vattr, ctx) == 0) &&
+ (kauth_cred_getuid(vfs_context_ucred(ctx)) == vattr.va_uid)) {
+ error = 0;
+ }
+ }
+ return error;
}
-#endif /* NFS_NOSERVER */
+#endif /* CONFIG_NFS_SERVER */
projects / apple / xnu.git / blobdiff