/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2014 Apple Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_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 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.
*
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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.
+ * 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_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
/*
* @(#)nfs_syscalls.c 8.5 (Berkeley) 3/30/95
* FreeBSD-Id: nfs_syscalls.c,v 1.32 1997/11/07 08:53:25 phk Exp $
*/
+/*
+ * NOTICE: This file was modified by SPARTA, Inc. in 2005 to introduce
+ * support for mandatory and extensible security protections. This notice
+ * is included in support of clause 2.2 (b) of the Apple Public License,
+ * Version 2.0.
+ */
#include <sys/param.h>
#include <sys/systm.h>
-/* XXX CSM 11/25/97 FreeBSD's generated syscall prototypes */
-#ifdef notyet
-#include <sys/sysproto.h>
-#endif
#include <sys/kernel.h>
-#include <sys/file.h>
+#include <sys/file_internal.h>
#include <sys/filedesc.h>
#include <sys/stat.h>
-#include <sys/vnode.h>
-#include <sys/mount.h>
-#include <sys/proc.h>
+#include <sys/vnode_internal.h>
+#include <sys/mount_internal.h>
+#include <sys/proc_internal.h> /* for fdflags */
+#include <sys/kauth.h>
#include <sys/sysctl.h>
+#include <sys/ubc.h>
#include <sys/uio.h>
#include <sys/malloc.h>
-#include <sys/buf.h>
-#include <sys/mbuf.h>
+#include <sys/kpi_mbuf.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/domain.h>
#include <sys/protosw.h>
-#include <sys/namei.h>
+#include <sys/fcntl.h>
+#include <sys/lockf.h>
#include <sys/syslog.h>
#include <sys/user.h>
-#include <machine/spl.h>
+#include <sys/sysproto.h>
+#include <sys/kpi_socket.h>
+#include <sys/fsevents.h>
+#include <libkern/OSAtomic.h>
+#include <kern/thread_call.h>
+#include <kern/task.h>
+
+#include <security/audit/audit.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
-#if ISO
-#include <netiso/iso.h>
-#endif
#include <nfs/xdr_subs.h>
#include <nfs/rpcv2.h>
#include <nfs/nfsproto.h>
#include <nfs/nfs.h>
#include <nfs/nfsm_subs.h>
#include <nfs/nfsrvcache.h>
+#include <nfs/nfs_gss.h>
#include <nfs/nfsmount.h>
#include <nfs/nfsnode.h>
-#include <nfs/nqnfs.h>
-#include <nfs/nfsrtt.h>
-
-
-/* Global defs. */
-extern int (*nfsrv3_procs[NFS_NPROCS]) __P((struct nfsrv_descript *nd,
- struct nfssvc_sock *slp,
- struct proc *procp,
- struct mbuf **mreqp));
-extern int nfs_numasync;
-extern time_t nqnfsstarttime;
-extern int nqsrv_writeslack;
-extern int nfsrtton;
-extern struct nfsstats nfsstats;
-extern int nfsrvw_procrastinate;
-extern int nfsrvw_procrastinate_v3;
-struct nfssvc_sock *nfs_udpsock, *nfs_cltpsock;
-static int nuidhash_max = NFS_MAXUIDHASH;
-
-static void nfsrv_zapsock __P((struct nfssvc_sock *slp));
-static int nfssvc_iod __P((struct proc *));
-
-#define TRUE 1
-#define FALSE 0
-
-static int nfs_asyncdaemon[NFS_MAXASYNCDAEMON];
-
-#ifndef NFS_NOSERVER
-int nfsd_waiting = 0;
-static struct nfsdrt nfsdrt;
-static int nfs_numnfsd = 0;
-static int notstarted = 1;
-static int modify_flag = 0;
-static void nfsd_rt __P((int sotype, struct nfsrv_descript *nd,
- int cacherep));
-static int nfssvc_addsock __P((struct file *, struct mbuf *,
- struct proc *));
-static int nfssvc_nfsd __P((struct nfsd_srvargs *,caddr_t,struct proc *));
-
-static int nfs_privport = 0;
-/* XXX CSM 11/25/97 Upgrade sysctl.h someday */
-#ifdef notyet
-SYSCTL_INT(_vfs_nfs, NFS_NFSPRIVPORT, nfs_privport, CTLFLAG_RW, &nfs_privport, 0, "");
-SYSCTL_INT(_vfs_nfs, OID_AUTO, gatherdelay, CTLFLAG_RW, &nfsrvw_procrastinate, 0, "");
-SYSCTL_INT(_vfs_nfs, OID_AUTO, gatherdelay_v3, CTLFLAG_RW, &nfsrvw_procrastinate_v3, 0, "");
+#include <nfs/nfs_lock.h>
+#if CONFIG_MACF
+#include <security/mac_framework.h>
+#endif
+
+kern_return_t thread_terminate(thread_t); /* XXX */
+
+#if NFSSERVER
+
+extern int (*nfsrv_procs[NFS_NPROCS])(struct nfsrv_descript *nd,
+ struct nfsrv_sock *slp,
+ vfs_context_t ctx,
+ mbuf_t *mrepp);
+extern int nfsrv_wg_delay;
+extern int nfsrv_wg_delay_v3;
+
+static int nfsrv_require_resv_port = 0;
+static time_t nfsrv_idlesock_timer_on = 0;
+static int nfsrv_sock_tcp_cnt = 0;
+#define NFSD_MIN_IDLE_TIMEOUT 30
+static int nfsrv_sock_idle_timeout = 3600; /* One hour */
+
+int nfssvc_export(user_addr_t argp);
+int nfssvc_nfsd(void);
+int nfssvc_addsock(socket_t, mbuf_t);
+void nfsrv_zapsock(struct nfsrv_sock *);
+void nfsrv_slpderef(struct nfsrv_sock *);
+void nfsrv_slpfree(struct nfsrv_sock *);
+
+#endif /* NFSSERVER */
+
+/*
+ * sysctl stuff
+ */
+SYSCTL_DECL(_vfs_generic);
+SYSCTL_NODE(_vfs_generic, OID_AUTO, nfs, CTLFLAG_RW|CTLFLAG_LOCKED, 0, "nfs hinge");
+
+#if NFSCLIENT
+SYSCTL_NODE(_vfs_generic_nfs, OID_AUTO, client, CTLFLAG_RW|CTLFLAG_LOCKED, 0, "nfs client hinge");
+SYSCTL_INT(_vfs_generic_nfs_client, OID_AUTO, initialdowndelay, CTLFLAG_RW | CTLFLAG_LOCKED, &nfs_tprintf_initial_delay, 0, "");
+SYSCTL_INT(_vfs_generic_nfs_client, OID_AUTO, nextdowndelay, CTLFLAG_RW | CTLFLAG_LOCKED, &nfs_tprintf_delay, 0, "");
+SYSCTL_INT(_vfs_generic_nfs_client, OID_AUTO, iosize, CTLFLAG_RW | CTLFLAG_LOCKED, &nfs_iosize, 0, "");
+SYSCTL_INT(_vfs_generic_nfs_client, OID_AUTO, access_cache_timeout, CTLFLAG_RW | CTLFLAG_LOCKED, &nfs_access_cache_timeout, 0, "");
+SYSCTL_INT(_vfs_generic_nfs_client, OID_AUTO, allow_async, CTLFLAG_RW | CTLFLAG_LOCKED, &nfs_allow_async, 0, "");
+SYSCTL_INT(_vfs_generic_nfs_client, OID_AUTO, statfs_rate_limit, CTLFLAG_RW | CTLFLAG_LOCKED, &nfs_statfs_rate_limit, 0, "");
+SYSCTL_INT(_vfs_generic_nfs_client, OID_AUTO, nfsiod_thread_max, CTLFLAG_RW | CTLFLAG_LOCKED, &nfsiod_thread_max, 0, "");
+SYSCTL_INT(_vfs_generic_nfs_client, OID_AUTO, nfsiod_thread_count, CTLFLAG_RD | CTLFLAG_LOCKED, &nfsiod_thread_count, 0, "");
+SYSCTL_INT(_vfs_generic_nfs_client, OID_AUTO, lockd_mounts, CTLFLAG_RD | CTLFLAG_LOCKED, &nfs_lockd_mounts, 0, "");
+SYSCTL_INT(_vfs_generic_nfs_client, OID_AUTO, max_async_writes, CTLFLAG_RW | CTLFLAG_LOCKED, &nfs_max_async_writes, 0, "");
+SYSCTL_INT(_vfs_generic_nfs_client, OID_AUTO, single_des, CTLFLAG_RW | CTLFLAG_LOCKED, &nfs_single_des, 0, "");
+SYSCTL_INT(_vfs_generic_nfs_client, OID_AUTO, access_delete, CTLFLAG_RW | CTLFLAG_LOCKED, &nfs_access_delete, 0, "");
+SYSCTL_INT(_vfs_generic_nfs_client, OID_AUTO, access_dotzfs, CTLFLAG_RW | CTLFLAG_LOCKED, &nfs_access_dotzfs, 0, "");
+SYSCTL_INT(_vfs_generic_nfs_client, OID_AUTO, access_for_getattr, CTLFLAG_RW | CTLFLAG_LOCKED, &nfs_access_for_getattr, 0, "");
+SYSCTL_INT(_vfs_generic_nfs_client, OID_AUTO, idmap_ctrl, CTLFLAG_RW | CTLFLAG_LOCKED, &nfs_idmap_ctrl, 0, "");
+SYSCTL_INT(_vfs_generic_nfs_client, OID_AUTO, callback_port, CTLFLAG_RW | CTLFLAG_LOCKED, &nfs_callback_port, 0, "");
+SYSCTL_INT(_vfs_generic_nfs_client, OID_AUTO, is_mobile, CTLFLAG_RW | CTLFLAG_LOCKED, &nfs_is_mobile, 0, "");
+SYSCTL_INT(_vfs_generic_nfs_client, OID_AUTO, squishy_flags, CTLFLAG_RW | CTLFLAG_LOCKED, &nfs_squishy_flags, 0, "");
+SYSCTL_UINT(_vfs_generic_nfs_client, OID_AUTO, debug_ctl, CTLFLAG_RW | CTLFLAG_LOCKED, &nfs_debug_ctl, 0, "");
+SYSCTL_INT(_vfs_generic_nfs_client, OID_AUTO, readlink_nocache, CTLFLAG_RW | CTLFLAG_LOCKED, &nfs_readlink_nocache, 0, "");
+SYSCTL_INT(_vfs_generic_nfs_client, OID_AUTO, root_steals_gss_context, CTLFLAG_RW | CTLFLAG_LOCKED, &nfs_root_steals_ctx, 0, "");
+#endif /* NFSCLIENT */
+
+#if NFSSERVER
+SYSCTL_NODE(_vfs_generic_nfs, OID_AUTO, server, CTLFLAG_RW|CTLFLAG_LOCKED, 0, "nfs server hinge");
+SYSCTL_INT(_vfs_generic_nfs_server, OID_AUTO, wg_delay, CTLFLAG_RW | CTLFLAG_LOCKED, &nfsrv_wg_delay, 0, "");
+SYSCTL_INT(_vfs_generic_nfs_server, OID_AUTO, wg_delay_v3, CTLFLAG_RW | CTLFLAG_LOCKED, &nfsrv_wg_delay_v3, 0, "");
+SYSCTL_INT(_vfs_generic_nfs_server, OID_AUTO, require_resv_port, CTLFLAG_RW | CTLFLAG_LOCKED, &nfsrv_require_resv_port, 0, "");
+SYSCTL_INT(_vfs_generic_nfs_server, OID_AUTO, async, CTLFLAG_RW | CTLFLAG_LOCKED, &nfsrv_async, 0, "");
+SYSCTL_INT(_vfs_generic_nfs_server, OID_AUTO, export_hash_size, CTLFLAG_RW | CTLFLAG_LOCKED, &nfsrv_export_hash_size, 0, "");
+SYSCTL_INT(_vfs_generic_nfs_server, OID_AUTO, reqcache_size, CTLFLAG_RW | CTLFLAG_LOCKED, &nfsrv_reqcache_size, 0, "");
+SYSCTL_INT(_vfs_generic_nfs_server, OID_AUTO, request_queue_length, CTLFLAG_RW | CTLFLAG_LOCKED, &nfsrv_sock_max_rec_queue_length, 0, "");
+SYSCTL_INT(_vfs_generic_nfs_server, OID_AUTO, user_stats, CTLFLAG_RW | CTLFLAG_LOCKED, &nfsrv_user_stat_enabled, 0, "");
+SYSCTL_UINT(_vfs_generic_nfs_server, OID_AUTO, gss_context_ttl, CTLFLAG_RW | CTLFLAG_LOCKED, &nfsrv_gss_context_ttl, 0, "");
+#if CONFIG_FSE
+SYSCTL_INT(_vfs_generic_nfs_server, OID_AUTO, fsevents, CTLFLAG_RW | CTLFLAG_LOCKED, &nfsrv_fsevents_enabled, 0, "");
#endif
+SYSCTL_INT(_vfs_generic_nfs_server, OID_AUTO, nfsd_thread_max, CTLFLAG_RW | CTLFLAG_LOCKED, &nfsd_thread_max, 0, "");
+SYSCTL_INT(_vfs_generic_nfs_server, OID_AUTO, nfsd_thread_count, CTLFLAG_RD | CTLFLAG_LOCKED, &nfsd_thread_count, 0, "");
+SYSCTL_INT(_vfs_generic_nfs_server, OID_AUTO, nfsd_sock_idle_timeout, CTLFLAG_RW | CTLFLAG_LOCKED, &nfsrv_sock_idle_timeout, 0, "");
+SYSCTL_INT(_vfs_generic_nfs_server, OID_AUTO, nfsd_tcp_connections, CTLFLAG_RD | CTLFLAG_LOCKED, &nfsrv_sock_tcp_cnt, 0, "");
+#ifdef NFS_UC_Q_DEBUG
+SYSCTL_INT(_vfs_generic_nfs_server, OID_AUTO, use_upcall_svc, CTLFLAG_RW | CTLFLAG_LOCKED, &nfsrv_uc_use_proxy, 0, "");
+SYSCTL_INT(_vfs_generic_nfs_server, OID_AUTO, upcall_queue_limit, CTLFLAG_RW | CTLFLAG_LOCKED, &nfsrv_uc_queue_limit, 0, "");
+SYSCTL_INT(_vfs_generic_nfs_server, OID_AUTO, upcall_queue_max_seen, CTLFLAG_RW | CTLFLAG_LOCKED, &nfsrv_uc_queue_max_seen, 0, "");
+SYSCTL_INT(_vfs_generic_nfs_server, OID_AUTO, upcall_queue_count, CTLFLAG_RD | CTLFLAG_LOCKED, __DECONST(int *, &nfsrv_uc_queue_count), 0, "");
+#endif
+#endif /* NFSSERVER */
+
+
+#if NFSCLIENT
+
+static int
+mapname2id(struct nfs_testmapid *map)
+{
+ int error;
+
+ error = nfs4_id2guid(map->ntm_name, &map->ntm_guid, map->ntm_grpflag);
+ if (error)
+ return (error);
+
+ if (map->ntm_grpflag)
+ error = kauth_cred_guid2gid(&map->ntm_guid, (gid_t *)&map->ntm_id);
+ else
+ error = kauth_cred_guid2uid(&map->ntm_guid, (uid_t *)&map->ntm_id);
+
+ return (error);
+}
+
+static int
+mapid2name(struct nfs_testmapid *map)
+{
+ int error;
+ int len = sizeof(map->ntm_name);
+
+ if (map->ntm_grpflag)
+ error = kauth_cred_gid2guid((gid_t)map->ntm_id, &map->ntm_guid);
+ else
+ error = kauth_cred_uid2guid((uid_t)map->ntm_id, &map->ntm_guid);
+
+ if (error)
+ return (error);
+
+ error = nfs4_guid2id(&map->ntm_guid, map->ntm_name, &len, map->ntm_grpflag);
+
+ return (error);
+
+}
+
+
+static int
+nfsclnt_testidmap(proc_t p, user_addr_t argp)
+{
+ struct nfs_testmapid mapid;
+ int error, coerror;
+
+ /* Let root make this call. */
+ error = proc_suser(p);
+ if (error)
+ return (error);
+
+ error = copyin(argp, &mapid, sizeof(mapid));
+ if (error)
+ return (error);
+ if (mapid.ntm_name2id)
+ error = mapname2id(&mapid);
+ else
+ error = mapid2name(&mapid);
+
+ coerror = copyout(&mapid, argp, sizeof(mapid));
+
+ return (error ? error : coerror);
+}
+
+int
+nfsclnt(proc_t p, struct nfsclnt_args *uap, __unused int *retval)
+{
+ struct lockd_ans la;
+ int error;
+
+ switch (uap->flag) {
+ case NFSCLNT_LOCKDANS:
+ error = copyin(uap->argp, &la, sizeof(la));
+ if (!error)
+ error = nfslockdans(p, &la);
+ break;
+ case NFSCLNT_LOCKDNOTIFY:
+ error = nfslockdnotify(p, uap->argp);
+ break;
+ case NFSCLNT_TESTIDMAP:
+ error = nfsclnt_testidmap(p, uap->argp);
+ break;
+ default:
+ error = EINVAL;
+ }
+ return (error);
+}
+
+
+/*
+ * Asynchronous I/O threads for client NFS.
+ * They do read-ahead and write-behind operations on the block I/O cache.
+ *
+ * The pool of up to nfsiod_thread_max threads is launched on demand and exit
+ * when unused for a while. There are as many nfsiod structs as there are
+ * nfsiod threads; however there's no strict tie between a thread and a struct.
+ * Each thread puts an nfsiod on the free list and sleeps on it. When it wakes
+ * up, it removes the next struct nfsiod from the queue and services it. Then
+ * it will put the struct at the head of free list and sleep on it.
+ * Async requests will pull the next struct nfsiod from the head of the free list,
+ * put it on the work queue, and wake whatever thread is waiting on that struct.
+ */
+
+/*
+ * nfsiod thread exit routine
+ *
+ * Must be called with nfsiod_mutex held so that the
+ * decision to terminate is atomic with the termination.
+ */
+void
+nfsiod_terminate(struct nfsiod *niod)
+{
+ nfsiod_thread_count--;
+ lck_mtx_unlock(nfsiod_mutex);
+ if (niod)
+ FREE(niod, M_TEMP);
+ else
+ printf("nfsiod: terminating without niod\n");
+ thread_terminate(current_thread());
+ /*NOTREACHED*/
+}
+
+/* nfsiod thread startup routine */
+void
+nfsiod_thread(void)
+{
+ struct nfsiod *niod;
+ int error;
+
+ MALLOC(niod, struct nfsiod *, sizeof(struct nfsiod), M_TEMP, M_WAITOK);
+ if (!niod) {
+ lck_mtx_lock(nfsiod_mutex);
+ nfsiod_thread_count--;
+ wakeup(current_thread());
+ lck_mtx_unlock(nfsiod_mutex);
+ thread_terminate(current_thread());
+ /*NOTREACHED*/
+ }
+ bzero(niod, sizeof(*niod));
+ lck_mtx_lock(nfsiod_mutex);
+ TAILQ_INSERT_HEAD(&nfsiodfree, niod, niod_link);
+ wakeup(current_thread());
+ error = msleep0(niod, nfsiod_mutex, PWAIT | PDROP, "nfsiod", NFS_ASYNCTHREADMAXIDLE*hz, nfsiod_continue);
+ /* shouldn't return... so we have an error */
+ /* remove an old nfsiod struct and terminate */
+ lck_mtx_lock(nfsiod_mutex);
+ if ((niod = TAILQ_LAST(&nfsiodfree, nfsiodlist)))
+ TAILQ_REMOVE(&nfsiodfree, niod, niod_link);
+ nfsiod_terminate(niod);
+ /*NOTREACHED*/
+}
+
+/*
+ * Start up another nfsiod thread.
+ * (unless we're already maxed out and there are nfsiods running)
+ */
+int
+nfsiod_start(void)
+{
+ thread_t thd = THREAD_NULL;
+
+ lck_mtx_lock(nfsiod_mutex);
+ if ((nfsiod_thread_count >= NFSIOD_MAX) && (nfsiod_thread_count > 0)) {
+ lck_mtx_unlock(nfsiod_mutex);
+ return (EBUSY);
+ }
+ nfsiod_thread_count++;
+ if (kernel_thread_start((thread_continue_t)nfsiod_thread, NULL, &thd) != KERN_SUCCESS) {
+ lck_mtx_unlock(nfsiod_mutex);
+ return (EBUSY);
+ }
+ /* wait for the thread to complete startup */
+ msleep(thd, nfsiod_mutex, PWAIT | PDROP, "nfsiodw", NULL);
+ thread_deallocate(thd);
+ return (0);
+}
+
+/*
+ * Continuation for Asynchronous I/O threads for NFS client.
+ *
+ * Grab an nfsiod struct to work on, do some work, then drop it
+ */
+int
+nfsiod_continue(int error)
+{
+ struct nfsiod *niod;
+ struct nfsmount *nmp;
+ struct nfsreq *req, *treq;
+ struct nfs_reqqhead iodq;
+ int morework;
+
+ lck_mtx_lock(nfsiod_mutex);
+ niod = TAILQ_FIRST(&nfsiodwork);
+ if (!niod) {
+ /* there's no work queued up */
+ /* remove an old nfsiod struct and terminate */
+ if ((niod = TAILQ_LAST(&nfsiodfree, nfsiodlist)))
+ TAILQ_REMOVE(&nfsiodfree, niod, niod_link);
+ nfsiod_terminate(niod);
+ /*NOTREACHED*/
+ }
+ TAILQ_REMOVE(&nfsiodwork, niod, niod_link);
+
+worktodo:
+ while ((nmp = niod->niod_nmp)) {
+ if (nmp == NULL){
+ niod->niod_nmp = NULL;
+ break;
+ }
+
+ /*
+ * Service this mount's async I/O queue.
+ *
+ * In order to ensure some level of fairness between mounts,
+ * we grab all the work up front before processing it so any
+ * new work that arrives will be serviced on a subsequent
+ * iteration - and we have a chance to see if other work needs
+ * to be done (e.g. the delayed write queue needs to be pushed
+ * or other mounts are waiting for an nfsiod).
+ */
+ /* grab the current contents of the queue */
+ TAILQ_INIT(&iodq);
+ TAILQ_CONCAT(&iodq, &nmp->nm_iodq, r_achain);
+ /* Mark each iod request as being managed by an iod */
+ TAILQ_FOREACH(req, &iodq, r_achain) {
+ lck_mtx_lock(&req->r_mtx);
+ assert(!(req->r_flags & R_IOD));
+ req->r_flags |= R_IOD;
+ lck_mtx_unlock(&req->r_mtx);
+ }
+ lck_mtx_unlock(nfsiod_mutex);
+
+ /* process the queue */
+ TAILQ_FOREACH_SAFE(req, &iodq, r_achain, treq) {
+ TAILQ_REMOVE(&iodq, req, r_achain);
+ req->r_achain.tqe_next = NFSREQNOLIST;
+ req->r_callback.rcb_func(req);
+ }
+
+ /* now check if there's more/other work to be done */
+ lck_mtx_lock(nfsiod_mutex);
+ morework = !TAILQ_EMPTY(&nmp->nm_iodq);
+ if (!morework || !TAILQ_EMPTY(&nfsiodmounts)) {
+ /*
+ * we're going to stop working on this mount but if the
+ * mount still needs more work so queue it up
+ */
+ if (morework && nmp->nm_iodlink.tqe_next == NFSNOLIST)
+ TAILQ_INSERT_TAIL(&nfsiodmounts, nmp, nm_iodlink);
+ nmp->nm_niod = NULL;
+ niod->niod_nmp = NULL;
+ }
+ }
+
+ /* loop if there's still a mount to work on */
+ if (!niod->niod_nmp && !TAILQ_EMPTY(&nfsiodmounts)) {
+ niod->niod_nmp = TAILQ_FIRST(&nfsiodmounts);
+ TAILQ_REMOVE(&nfsiodmounts, niod->niod_nmp, nm_iodlink);
+ niod->niod_nmp->nm_iodlink.tqe_next = NFSNOLIST;
+ }
+ if (niod->niod_nmp)
+ goto worktodo;
+
+ /* queue ourselves back up - if there aren't too many threads running */
+ if (nfsiod_thread_count <= NFSIOD_MAX) {
+ TAILQ_INSERT_HEAD(&nfsiodfree, niod, niod_link);
+ error = msleep0(niod, nfsiod_mutex, PWAIT | PDROP, "nfsiod", NFS_ASYNCTHREADMAXIDLE*hz, nfsiod_continue);
+ /* shouldn't return... so we have an error */
+ /* remove an old nfsiod struct and terminate */
+ lck_mtx_lock(nfsiod_mutex);
+ if ((niod = TAILQ_LAST(&nfsiodfree, nfsiodlist)))
+ TAILQ_REMOVE(&nfsiodfree, niod, niod_link);
+ }
+ nfsiod_terminate(niod);
+ /*NOTREACHED*/
+ return (0);
+}
+
+#endif /* NFSCLIENT */
+
+
+#if NFSSERVER
/*
* NFS server system calls
/*
* Get file handle system call
*/
-#ifndef _SYS_SYSPROTO_H_
-struct getfh_args {
- char *fname;
- fhandle_t *fhp;
-};
-#endif
int
-getfh(p, uap)
- struct proc *p;
- register struct getfh_args *uap;
+getfh(proc_t p, struct getfh_args *uap, __unused int *retval)
{
- register struct vnode *vp;
- fhandle_t fh;
- int error;
+ vnode_t vp;
+ struct nfs_filehandle nfh;
+ int error, fhlen, fidlen;
struct nameidata nd;
+ char path[MAXPATHLEN], *ptr;
+ size_t pathlen;
+ struct nfs_exportfs *nxfs;
+ struct nfs_export *nx;
/*
* Must be super user
*/
- error = suser(p->p_ucred, &p->p_acflag);
- if(error)
+ error = proc_suser(p);
+ if (error)
+ return (error);
+
+ error = copyinstr(uap->fname, path, MAXPATHLEN, &pathlen);
+ if (!error)
+ error = copyin(uap->fhp, &fhlen, sizeof(fhlen));
+ if (error)
return (error);
- NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->fname, p);
+ /* limit fh size to length specified (or v3 size by default) */
+ if ((fhlen != NFSV2_MAX_FH_SIZE) && (fhlen != NFSV3_MAX_FH_SIZE))
+ fhlen = NFSV3_MAX_FH_SIZE;
+ fidlen = fhlen - sizeof(struct nfs_exphandle);
+
+ if (!nfsrv_is_initialized())
+ return (EINVAL);
+
+ NDINIT(&nd, LOOKUP, OP_LOOKUP, FOLLOW | LOCKLEAF | AUDITVNPATH1,
+ UIO_SYSSPACE, CAST_USER_ADDR_T(path), vfs_context_current());
error = namei(&nd);
if (error)
return (error);
+ nameidone(&nd);
+
vp = nd.ni_vp;
- bzero((caddr_t)&fh, sizeof(fh));
- fh.fh_fsid = vp->v_mount->mnt_stat.f_fsid;
- error = VFS_VPTOFH(vp, &fh.fh_fid);
- vput(vp);
+
+ // find exportfs that matches f_mntonname
+ lck_rw_lock_shared(&nfsrv_export_rwlock);
+ ptr = vnode_mount(vp)->mnt_vfsstat.f_mntonname;
+ LIST_FOREACH(nxfs, &nfsrv_exports, nxfs_next) {
+ if (!strncmp(nxfs->nxfs_path, ptr, MAXPATHLEN))
+ break;
+ }
+ if (!nxfs || strncmp(nxfs->nxfs_path, path, strlen(nxfs->nxfs_path))) {
+ error = EINVAL;
+ goto out;
+ }
+ // find export that best matches remainder of path
+ ptr = path + strlen(nxfs->nxfs_path);
+ while (*ptr && (*ptr == '/'))
+ ptr++;
+ LIST_FOREACH(nx, &nxfs->nxfs_exports, nx_next) {
+ int len = strlen(nx->nx_path);
+ if (len == 0) // we've hit the export entry for the root directory
+ break;
+ if (!strncmp(nx->nx_path, ptr, len))
+ break;
+ }
+ if (!nx) {
+ error = EINVAL;
+ goto out;
+ }
+
+ bzero(&nfh, sizeof(nfh));
+ nfh.nfh_xh.nxh_version = htonl(NFS_FH_VERSION);
+ nfh.nfh_xh.nxh_fsid = htonl(nxfs->nxfs_id);
+ nfh.nfh_xh.nxh_expid = htonl(nx->nx_id);
+ nfh.nfh_xh.nxh_flags = 0;
+ nfh.nfh_xh.nxh_reserved = 0;
+ nfh.nfh_len = fidlen;
+ error = VFS_VPTOFH(vp, (int*)&nfh.nfh_len, &nfh.nfh_fid[0], NULL);
+ if (nfh.nfh_len > (uint32_t)fidlen)
+ error = EOVERFLOW;
+ nfh.nfh_xh.nxh_fidlen = nfh.nfh_len;
+ nfh.nfh_len += sizeof(nfh.nfh_xh);
+ nfh.nfh_fhp = (u_char*)&nfh.nfh_xh;
+
+out:
+ lck_rw_done(&nfsrv_export_rwlock);
+ vnode_put(vp);
if (error)
return (error);
- error = copyout((caddr_t)&fh, (caddr_t)uap->fhp, sizeof (fh));
+ error = copyout((caddr_t)&nfh, uap->fhp, sizeof(fhandle_t));
return (error);
}
-#endif /* NFS_NOSERVER */
+extern const struct fileops vnops;
+
/*
- * Nfs server psuedo system call for the nfsd's
- * Based on the flag value it either:
- * - adds a socket to the selection list
- * - remains in the kernel as an nfsd
- * - remains in the kernel as an nfsiod
+ * syscall for the rpc.lockd to use to translate a NFS file handle into
+ * an open descriptor.
+ *
+ * warning: do not remove the suser() call or this becomes one giant
+ * security hole.
*/
-#ifndef _SYS_SYSPROTO_H_
-struct nfssvc_args {
- int flag;
- caddr_t argp;
-};
-#endif
int
-nfssvc(p, uap)
- struct proc *p;
- register struct nfssvc_args *uap;
+fhopen( proc_t p,
+ struct fhopen_args *uap,
+ int32_t *retval)
{
-#ifndef NFS_NOSERVER
- struct nameidata nd;
- struct file *fp;
- struct mbuf *nam;
- struct nfsd_args nfsdarg;
- struct nfsd_srvargs nfsd_srvargs, *nsd = &nfsd_srvargs;
- struct nfsd_cargs ncd;
- struct nfsd *nfsd;
- struct nfssvc_sock *slp;
- struct nfsuid *nuidp;
- struct nfsmount *nmp;
-#endif /* NFS_NOSERVER */
- int error;
+ vnode_t vp;
+ struct nfs_filehandle nfh;
+ struct nfs_export *nx;
+ struct nfs_export_options *nxo;
+ struct flock lf;
+ struct fileproc *fp, *nfp;
+ int fmode, error, type;
+ int indx;
+ vfs_context_t ctx = vfs_context_current();
+ kauth_action_t action;
/*
* Must be super user
*/
- error = suser(p->p_ucred, &p->p_acflag);
- if(error)
+ error = suser(vfs_context_ucred(ctx), 0);
+ if (error) {
return (error);
- while (nfssvc_sockhead_flag & SLP_INIT) {
- nfssvc_sockhead_flag |= SLP_WANTINIT;
- (void) tsleep((caddr_t)&nfssvc_sockhead, PSOCK, "nfsd init", 0);
}
- if (uap->flag & NFSSVC_BIOD)
- error = nfssvc_iod(p);
-#ifdef NFS_NOSERVER
- else
- error = ENXIO;
-#else /* !NFS_NOSERVER */
- else if (uap->flag & NFSSVC_MNTD) {
- error = copyin(uap->argp, (caddr_t)&ncd, sizeof (ncd));
- if (error)
- return (error);
- NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE,
- ncd.ncd_dirp, p);
- error = namei(&nd);
- if (error)
- return (error);
- if ((nd.ni_vp->v_flag & VROOT) == 0)
- error = EINVAL;
- nmp = VFSTONFS(nd.ni_vp->v_mount);
- vput(nd.ni_vp);
- if (error)
- return (error);
- /* disable split funnels now */
- thread_funnel_merge(kernel_flock, network_flock);
-
- if ((nmp->nm_flag & NFSMNT_MNTD) &&
- (uap->flag & NFSSVC_GOTAUTH) == 0)
- return (0);
- nmp->nm_flag |= NFSMNT_MNTD;
- error = nqnfs_clientd(nmp, p->p_ucred, &ncd, uap->flag,
- uap->argp, p);
- } else if (uap->flag & NFSSVC_ADDSOCK) {
- error = copyin(uap->argp, (caddr_t)&nfsdarg, sizeof(nfsdarg));
- if (error)
- return (error);
- error = getsock(p->p_fd, nfsdarg.sock, &fp);
- if (error)
+ if (!nfsrv_is_initialized()) {
+ return (EINVAL);
+ }
+
+ fmode = FFLAGS(uap->flags);
+ /* why not allow a non-read/write open for our lockd? */
+ if (((fmode & (FREAD | FWRITE)) == 0) || (fmode & O_CREAT))
+ return (EINVAL);
+
+ error = copyin(uap->u_fhp, &nfh.nfh_len, sizeof(nfh.nfh_len));
+ if (error)
+ return (error);
+ if ((nfh.nfh_len < (int)sizeof(struct nfs_exphandle)) ||
+ (nfh.nfh_len > (int)NFSV3_MAX_FH_SIZE))
+ return (EINVAL);
+ error = copyin(uap->u_fhp, &nfh, sizeof(nfh.nfh_len) + nfh.nfh_len);
+ if (error)
+ return (error);
+ nfh.nfh_fhp = (u_char*)&nfh.nfh_xh;
+
+ lck_rw_lock_shared(&nfsrv_export_rwlock);
+ /* now give me my vnode, it gets returned to me with a reference */
+ error = nfsrv_fhtovp(&nfh, NULL, &vp, &nx, &nxo);
+ lck_rw_done(&nfsrv_export_rwlock);
+ if (error) {
+ if (error == NFSERR_TRYLATER)
+ error = EAGAIN; // XXX EBUSY? Or just leave as TRYLATER?
+ return (error);
+ }
+
+ /*
+ * From now on we have to make sure not
+ * to forget about the vnode.
+ * Any error that causes an abort must vnode_put(vp).
+ * Just set error = err and 'goto bad;'.
+ */
+
+ /*
+ * from vn_open
+ */
+ if (vnode_vtype(vp) == VSOCK) {
+ error = EOPNOTSUPP;
+ goto bad;
+ }
+
+ /* disallow write operations on directories */
+ if (vnode_isdir(vp) && (fmode & (FWRITE | O_TRUNC))) {
+ error = EISDIR;
+ goto bad;
+ }
+
+ /* compute action to be authorized */
+ action = 0;
+ if (fmode & FREAD)
+ action |= KAUTH_VNODE_READ_DATA;
+ if (fmode & (FWRITE | O_TRUNC))
+ action |= KAUTH_VNODE_WRITE_DATA;
+ if ((error = vnode_authorize(vp, NULL, action, ctx)) != 0)
+ goto bad;
+
+ if ((error = VNOP_OPEN(vp, fmode, ctx)))
+ goto bad;
+ if ((error = vnode_ref_ext(vp, fmode, 0)))
+ goto bad;
+
+ /*
+ * end of vn_open code
+ */
+
+ // starting here... error paths should call vn_close/vnode_put
+ if ((error = falloc(p, &nfp, &indx, ctx)) != 0) {
+ vn_close(vp, fmode & FMASK, ctx);
+ goto bad;
+ }
+ fp = nfp;
+
+ fp->f_fglob->fg_flag = fmode & FMASK;
+ fp->f_fglob->fg_ops = &vnops;
+ fp->f_fglob->fg_data = (caddr_t)vp;
+
+ // XXX do we really need to support this with fhopen()?
+ if (fmode & (O_EXLOCK | O_SHLOCK)) {
+ lf.l_whence = SEEK_SET;
+ lf.l_start = 0;
+ lf.l_len = 0;
+ if (fmode & O_EXLOCK)
+ lf.l_type = F_WRLCK;
+ else
+ lf.l_type = F_RDLCK;
+ type = F_FLOCK;
+ if ((fmode & FNONBLOCK) == 0)
+ type |= F_WAIT;
+ if ((error = VNOP_ADVLOCK(vp, (caddr_t)fp->f_fglob, F_SETLK, &lf, type, ctx, NULL))) {
+ struct vfs_context context = *vfs_context_current();
+ /* Modify local copy (to not damage thread copy) */
+ context.vc_ucred = fp->f_fglob->fg_cred;
+
+ vn_close(vp, fp->f_fglob->fg_flag, &context);
+ fp_free(p, indx, fp);
return (error);
- /*
- * Get the client address for connected sockets.
- */
- if (nfsdarg.name == NULL || nfsdarg.namelen == 0)
- nam = (struct mbuf *)0;
- else {
- error = sockargs(&nam, nfsdarg.name, nfsdarg.namelen,
- MT_SONAME);
- if (error)
- return (error);
}
- error = nfssvc_addsock(fp, nam, p);
- } else {
- error = copyin(uap->argp, (caddr_t)nsd, sizeof (*nsd));
- if (error)
- return (error);
+ fp->f_fglob->fg_flag |= FHASLOCK;
+ }
- /* disable split funnels now */
- thread_funnel_merge(kernel_flock, network_flock);
+ vnode_put(vp);
- if ((uap->flag & NFSSVC_AUTHIN) && ((nfsd = nsd->nsd_nfsd)) &&
- (nfsd->nfsd_slp->ns_flag & SLP_VALID)) {
- slp = nfsd->nfsd_slp;
+ proc_fdlock(p);
+ procfdtbl_releasefd(p, indx, NULL);
+ fp_drop(p, indx, fp, 1);
+ proc_fdunlock(p);
- /*
- * First check to see if another nfsd has already
- * added this credential.
- */
- for (nuidp = NUIDHASH(slp,nsd->nsd_cr.cr_uid)->lh_first;
- nuidp != 0; nuidp = nuidp->nu_hash.le_next) {
- if (nuidp->nu_cr.cr_uid == nsd->nsd_cr.cr_uid &&
- (!nfsd->nfsd_nd->nd_nam2 ||
- netaddr_match(NU_NETFAM(nuidp),
- &nuidp->nu_haddr, nfsd->nfsd_nd->nd_nam2)))
- break;
+ *retval = indx;
+ return (0);
+
+bad:
+ vnode_put(vp);
+ return (error);
+}
+
+/*
+ * NFS server pseudo system call
+ */
+int
+nfssvc(proc_t p, struct nfssvc_args *uap, __unused int *retval)
+{
+ mbuf_t nam;
+ struct user_nfsd_args user_nfsdarg;
+ socket_t so;
+ int error;
+
+ AUDIT_ARG(cmd, uap->flag);
+
+ /*
+ * Must be super user for most operations (export ops checked later).
+ */
+ if ((uap->flag != NFSSVC_EXPORT) && ((error = proc_suser(p))))
+ return (error);
+#if CONFIG_MACF
+ error = mac_system_check_nfsd(kauth_cred_get());
+ if (error)
+ return (error);
+#endif
+
+ /* make sure NFS server data structures have been initialized */
+ nfsrv_init();
+
+ if (uap->flag & NFSSVC_ADDSOCK) {
+ if (IS_64BIT_PROCESS(p)) {
+ error = copyin(uap->argp, (caddr_t)&user_nfsdarg, sizeof(user_nfsdarg));
+ } else {
+ struct nfsd_args tmp_args;
+ error = copyin(uap->argp, (caddr_t)&tmp_args, sizeof(tmp_args));
+ if (error == 0) {
+ user_nfsdarg.sock = tmp_args.sock;
+ user_nfsdarg.name = CAST_USER_ADDR_T(tmp_args.name);
+ user_nfsdarg.namelen = tmp_args.namelen;
}
- if (nuidp) {
- nfsrv_setcred(&nuidp->nu_cr,&nfsd->nfsd_nd->nd_cr);
- nfsd->nfsd_nd->nd_flag |= ND_KERBFULL;
- } else {
- /*
- * Nope, so we will.
- */
- if (slp->ns_numuids < nuidhash_max) {
- slp->ns_numuids++;
- nuidp = (struct nfsuid *)
- _MALLOC_ZONE(sizeof (struct nfsuid),
- M_NFSUID, M_WAITOK);
- } else
- nuidp = (struct nfsuid *)0;
- if ((slp->ns_flag & SLP_VALID) == 0) {
- if (nuidp)
- _FREE_ZONE((caddr_t)nuidp,
- sizeof (struct nfsuid), M_NFSUID);
- } else {
- if (nuidp == (struct nfsuid *)0) {
- nuidp = slp->ns_uidlruhead.tqh_first;
- LIST_REMOVE(nuidp, nu_hash);
- TAILQ_REMOVE(&slp->ns_uidlruhead, nuidp,
- nu_lru);
- if (nuidp->nu_flag & NU_NAM)
- m_freem(nuidp->nu_nam);
- }
- nuidp->nu_flag = 0;
- nuidp->nu_cr = nsd->nsd_cr;
- if (nuidp->nu_cr.cr_ngroups > NGROUPS)
- nuidp->nu_cr.cr_ngroups = NGROUPS;
- nuidp->nu_cr.cr_ref = 1;
- nuidp->nu_timestamp = nsd->nsd_timestamp;
- nuidp->nu_expire = time.tv_sec + nsd->nsd_ttl;
- /*
- * and save the session key in nu_key.
- */
- bcopy(nsd->nsd_key, nuidp->nu_key,
- sizeof (nsd->nsd_key));
- if (nfsd->nfsd_nd->nd_nam2) {
- struct sockaddr_in *saddr;
-
- saddr = mtod(nfsd->nfsd_nd->nd_nam2,
- struct sockaddr_in *);
- switch (saddr->sin_family) {
- case AF_INET:
- nuidp->nu_flag |= NU_INETADDR;
- nuidp->nu_inetaddr =
- saddr->sin_addr.s_addr;
- break;
- case AF_ISO:
- default:
- nuidp->nu_flag |= NU_NAM;
- nuidp->nu_nam = m_copym(
- nfsd->nfsd_nd->nd_nam2, 0,
- M_COPYALL, M_WAIT);
- break;
- };
- }
- TAILQ_INSERT_TAIL(&slp->ns_uidlruhead, nuidp,
- nu_lru);
- LIST_INSERT_HEAD(NUIDHASH(slp, nsd->nsd_uid),
- nuidp, nu_hash);
- nfsrv_setcred(&nuidp->nu_cr,
- &nfsd->nfsd_nd->nd_cr);
- nfsd->nfsd_nd->nd_flag |= ND_KERBFULL;
- }
+ }
+ if (error)
+ return (error);
+ /* get the socket */
+ error = file_socket(user_nfsdarg.sock, &so);
+ if (error)
+ return (error);
+ /* Get the client address for connected sockets. */
+ if (user_nfsdarg.name == USER_ADDR_NULL || user_nfsdarg.namelen == 0) {
+ nam = NULL;
+ } else {
+ error = sockargs(&nam, user_nfsdarg.name, user_nfsdarg.namelen, MBUF_TYPE_SONAME);
+ if (error) {
+ /* drop the iocount file_socket() grabbed on the file descriptor */
+ file_drop(user_nfsdarg.sock);
+ return (error);
}
}
- if ((uap->flag & NFSSVC_AUTHINFAIL) && (nfsd = nsd->nsd_nfsd))
- nfsd->nfsd_flag |= NFSD_AUTHFAIL;
- error = nfssvc_nfsd(nsd, uap->argp, p);
+ /*
+ * nfssvc_addsock() will grab a retain count on the socket
+ * to keep the socket from being closed when nfsd closes its
+ * file descriptor for it.
+ */
+ error = nfssvc_addsock(so, nam);
+ /* drop the iocount file_socket() grabbed on the file descriptor */
+ file_drop(user_nfsdarg.sock);
+ } else if (uap->flag & NFSSVC_NFSD) {
+ error = nfssvc_nfsd();
+ } else if (uap->flag & NFSSVC_EXPORT) {
+ error = nfssvc_export(uap->argp);
+ } else {
+ error = EINVAL;
}
-#endif /* NFS_NOSERVER */
if (error == EINTR || error == ERESTART)
error = 0;
return (error);
}
-#ifndef NFS_NOSERVER
/*
* Adds a socket to the list for servicing by nfsds.
*/
-static int
-nfssvc_addsock(fp, mynam, p)
- struct file *fp;
- struct mbuf *mynam;
- struct proc *p;
+int
+nfssvc_addsock(socket_t so, mbuf_t mynam)
{
- register struct mbuf *m;
- register int siz;
- register struct nfssvc_sock *slp;
- register struct socket *so;
- struct nfssvc_sock *tslp;
- int error, s;
-
- so = (struct socket *)fp->f_data;
- tslp = (struct nfssvc_sock *)0;
- /*
- * Add it to the list, as required.
- */
- thread_funnel_switch(KERNEL_FUNNEL, NETWORK_FUNNEL);
- if (so->so_proto->pr_protocol == IPPROTO_UDP) {
- tslp = nfs_udpsock;
- if (tslp->ns_flag & SLP_VALID) {
- m_freem(mynam);
- thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
- return (EPERM);
- }
-#if ISO
- } else if (so->so_proto->pr_protocol == ISOPROTO_CLTP) {
- tslp = nfs_cltpsock;
- if (tslp->ns_flag & SLP_VALID) {
- m_freem(mynam);
- thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
- return (EPERM);
- }
-#endif /* ISO */
+ struct nfsrv_sock *slp;
+ int error = 0, sodomain, sotype, soprotocol, on = 1;
+ int first;
+ struct timeval timeo;
+
+ /* make sure mbuf constants are set up */
+ if (!nfs_mbuf_mhlen)
+ nfs_mbuf_init();
+
+ sock_gettype(so, &sodomain, &sotype, &soprotocol);
+
+ /* There should be only one UDP socket for each of IPv4 and IPv6 */
+ if ((sodomain == AF_INET) && (soprotocol == IPPROTO_UDP) && nfsrv_udpsock) {
+ mbuf_freem(mynam);
+ return (EEXIST);
}
- if (so->so_type == SOCK_STREAM)
- siz = NFS_MAXPACKET + sizeof (u_long);
- else
- siz = NFS_MAXPACKET;
- error = soreserve(so, siz, siz);
- if (error) {
- m_freem(mynam);
- thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
- return (error);
+ if ((sodomain == AF_INET6) && (soprotocol == IPPROTO_UDP) && nfsrv_udp6sock) {
+ mbuf_freem(mynam);
+ return (EEXIST);
+ }
+
+ /* Set protocol options and reserve some space (for UDP). */
+ if (sotype == SOCK_STREAM) {
+ error = nfsrv_check_exports_allow_address(mynam);
+ if (error)
+ return (error);
+ sock_setsockopt(so, SOL_SOCKET, SO_KEEPALIVE, &on, sizeof(on));
+ }
+ if ((sodomain == AF_INET) && (soprotocol == IPPROTO_TCP))
+ sock_setsockopt(so, IPPROTO_TCP, TCP_NODELAY, &on, sizeof(on));
+ if (sotype == SOCK_DGRAM) { /* set socket buffer sizes for UDP */
+ int reserve = NFS_UDPSOCKBUF;
+ error |= sock_setsockopt(so, SOL_SOCKET, SO_SNDBUF, &reserve, sizeof(reserve));
+ error |= sock_setsockopt(so, SOL_SOCKET, SO_RCVBUF, &reserve, sizeof(reserve));
+ if (error) {
+ log(LOG_INFO, "nfssvc_addsock: UDP socket buffer setting error(s) %d\n", error);
+ error = 0;
+ }
}
+ sock_nointerrupt(so, 0);
/*
- * Set protocol specific options { for now TCP only } and
- * reserve some space. For datagram sockets, this can get called
- * repeatedly for the same socket, but that isn't harmful.
+ * Set socket send/receive timeouts.
+ * Receive timeout shouldn't matter, but setting the send timeout
+ * will make sure that an unresponsive client can't hang the server.
*/
- if (so->so_type == SOCK_STREAM) {
- struct sockopt sopt;
- int val;
-
- bzero(&sopt, sizeof sopt);
- sopt.sopt_level = SOL_SOCKET;
- sopt.sopt_name = SO_KEEPALIVE;
- sopt.sopt_val = &val;
- sopt.sopt_valsize = sizeof val;
- val = 1;
- sosetopt(so, &sopt);
+ timeo.tv_usec = 0;
+ timeo.tv_sec = 1;
+ error |= sock_setsockopt(so, SOL_SOCKET, SO_RCVTIMEO, &timeo, sizeof(timeo));
+ timeo.tv_sec = 30;
+ error |= sock_setsockopt(so, SOL_SOCKET, SO_SNDTIMEO, &timeo, sizeof(timeo));
+ if (error) {
+ log(LOG_INFO, "nfssvc_addsock: socket timeout setting error(s) %d\n", error);
+ error = 0;
+ }
+
+ MALLOC(slp, struct nfsrv_sock *, sizeof(struct nfsrv_sock), M_NFSSVC, M_WAITOK);
+ if (!slp) {
+ mbuf_freem(mynam);
+ return (ENOMEM);
}
- if (so->so_proto->pr_domain->dom_family == AF_INET &&
- so->so_proto->pr_protocol == IPPROTO_TCP) {
- struct sockopt sopt;
- int val;
-
- bzero(&sopt, sizeof sopt);
- sopt.sopt_level = IPPROTO_TCP;
- sopt.sopt_name = TCP_NODELAY;
- sopt.sopt_val = &val;
- sopt.sopt_valsize = sizeof val;
- val = 1;
- sosetopt(so, &sopt);
+ bzero((caddr_t)slp, sizeof (struct nfsrv_sock));
+ lck_rw_init(&slp->ns_rwlock, nfsrv_slp_rwlock_group, LCK_ATTR_NULL);
+ lck_mtx_init(&slp->ns_wgmutex, nfsrv_slp_mutex_group, LCK_ATTR_NULL);
+
+ lck_mtx_lock(nfsd_mutex);
+
+ if (soprotocol == IPPROTO_UDP) {
+ if (sodomain == AF_INET) {
+ /* There should be only one UDP/IPv4 socket */
+ if (nfsrv_udpsock) {
+ lck_mtx_unlock(nfsd_mutex);
+ nfsrv_slpfree(slp);
+ mbuf_freem(mynam);
+ return (EEXIST);
+ }
+ nfsrv_udpsock = slp;
+ }
+ if (sodomain == AF_INET6) {
+ /* There should be only one UDP/IPv6 socket */
+ if (nfsrv_udp6sock) {
+ lck_mtx_unlock(nfsd_mutex);
+ nfsrv_slpfree(slp);
+ mbuf_freem(mynam);
+ return (EEXIST);
+ }
+ nfsrv_udp6sock = slp;
+ }
}
- so->so_rcv.sb_flags &= ~SB_NOINTR;
- so->so_rcv.sb_timeo = 0;
- so->so_snd.sb_flags &= ~SB_NOINTR;
- so->so_snd.sb_timeo = 0;
- thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
- if (tslp)
- slp = tslp;
- else {
- MALLOC(slp, struct nfssvc_sock *, sizeof(struct nfssvc_sock),
- M_NFSSVC, M_WAITOK);
- bzero((caddr_t)slp, sizeof (struct nfssvc_sock));
- TAILQ_INIT(&slp->ns_uidlruhead);
- TAILQ_INSERT_TAIL(&nfssvc_sockhead, slp, ns_chain);
+ /* add the socket to the list */
+ first = TAILQ_EMPTY(&nfsrv_socklist);
+ TAILQ_INSERT_TAIL(&nfsrv_socklist, slp, ns_chain);
+ if (soprotocol == IPPROTO_TCP) {
+ nfsrv_sock_tcp_cnt++;
+ if (nfsrv_sock_idle_timeout < 0)
+ nfsrv_sock_idle_timeout = 0;
+ if (nfsrv_sock_idle_timeout && (nfsrv_sock_idle_timeout < NFSD_MIN_IDLE_TIMEOUT))
+ nfsrv_sock_idle_timeout = NFSD_MIN_IDLE_TIMEOUT;
+ /*
+ * Possibly start or stop the idle timer. We only start the idle timer when
+ * we have more than 2 * nfsd_thread_max connections. If the idle timer is
+ * on then we may need to turn it off based on the nvsrv_sock_idle_timeout or
+ * the number of connections.
+ */
+ if ((nfsrv_sock_tcp_cnt > 2 * nfsd_thread_max) || nfsrv_idlesock_timer_on) {
+ if (nfsrv_sock_idle_timeout == 0 || nfsrv_sock_tcp_cnt <= 2 * nfsd_thread_max) {
+ if (nfsrv_idlesock_timer_on) {
+ thread_call_cancel(nfsrv_idlesock_timer_call);
+ nfsrv_idlesock_timer_on = 0;
+ }
+ } else {
+ struct nfsrv_sock *old_slp;
+ struct timeval now;
+ time_t time_to_wait = nfsrv_sock_idle_timeout;
+ /*
+ * Get the oldest tcp socket and calculate the
+ * earliest time for the next idle timer to fire
+ * based on the possibly updated nfsrv_sock_idle_timeout
+ */
+ TAILQ_FOREACH(old_slp, &nfsrv_socklist, ns_chain) {
+ if (old_slp->ns_sotype == SOCK_STREAM) {
+ microuptime(&now);
+ time_to_wait -= now.tv_sec - old_slp->ns_timestamp;
+ if (time_to_wait < 1)
+ time_to_wait = 1;
+ break;
+ }
+ }
+ /*
+ * If we have a timer scheduled, but if its going to fire too late,
+ * turn it off.
+ */
+ if (nfsrv_idlesock_timer_on > now.tv_sec + time_to_wait) {
+ thread_call_cancel(nfsrv_idlesock_timer_call);
+ nfsrv_idlesock_timer_on = 0;
+ }
+ /* Schedule the idle thread if it isn't already */
+ if (!nfsrv_idlesock_timer_on) {
+ nfs_interval_timer_start(nfsrv_idlesock_timer_call, time_to_wait * 1000);
+ nfsrv_idlesock_timer_on = now.tv_sec + time_to_wait;
+ }
+ }
+ }
}
+
+ sock_retain(so); /* grab a retain count on the socket */
slp->ns_so = so;
+ slp->ns_sotype = sotype;
slp->ns_nam = mynam;
- slp->ns_fp = fp;
- (void)fref(fp);
- thread_funnel_switch(KERNEL_FUNNEL, NETWORK_FUNNEL);
- s = splnet();
- so->so_upcallarg = (caddr_t)slp;
- so->so_upcall = nfsrv_rcv;
- so->so_rcv.sb_flags |= SB_UPCALL; /* required for freebsd merge */
- thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
- slp->ns_flag = (SLP_VALID | SLP_NEEDQ);
+
+ /* set up the socket up-call */
+ nfsrv_uc_addsock(slp, first);
+
+ /* mark that the socket is not in the nfsrv_sockwg list */
+ slp->ns_wgq.tqe_next = SLPNOLIST;
+
+ slp->ns_flag = SLP_VALID | SLP_NEEDQ;
+
nfsrv_wakenfsd(slp);
- splx(s);
+ lck_mtx_unlock(nfsd_mutex);
+
return (0);
}
/*
- * Called by nfssvc() for nfsds. Just loops around servicing rpc requests
- * until it is killed by a signal.
+ * nfssvc_nfsd()
+ *
+ * nfsd theory of operation:
+ *
+ * The first nfsd thread stays in user mode accepting new TCP connections
+ * which are then added via the "addsock" call. The rest of the nfsd threads
+ * simply call into the kernel and remain there in a loop handling NFS
+ * requests until killed by a signal.
+ *
+ * There's a list of nfsd threads (nfsd_head).
+ * There's an nfsd queue that contains only those nfsds that are
+ * waiting for work to do (nfsd_queue).
+ *
+ * There's a list of all NFS sockets (nfsrv_socklist) and two queues for
+ * managing the work on the sockets:
+ * nfsrv_sockwait - sockets w/new data waiting to be worked on
+ * nfsrv_sockwork - sockets being worked on which may have more work to do
+ * nfsrv_sockwg -- sockets which have pending write gather data
+ * When a socket receives data, if it is not currently queued, it
+ * will be placed at the end of the "wait" queue.
+ * Whenever a socket needs servicing we make sure it is queued and
+ * wake up a waiting nfsd (if there is one).
+ *
+ * nfsds will service at most 8 requests from the same socket before
+ * defecting to work on another socket.
+ * nfsds will defect immediately if there are any sockets in the "wait" queue
+ * nfsds looking for a socket to work on check the "wait" queue first and
+ * then check the "work" queue.
+ * When an nfsd starts working on a socket, it removes it from the head of
+ * the queue it's currently on and moves it to the end of the "work" queue.
+ * When nfsds are checking the queues for work, any sockets found not to
+ * have any work are simply dropped from the queue.
+ *
*/
-static int
-nfssvc_nfsd(nsd, argp, p)
- struct nfsd_srvargs *nsd;
- caddr_t argp;
- struct proc *p;
+int
+nfssvc_nfsd(void)
{
- register struct mbuf *m;
- register int siz;
- register struct nfssvc_sock *slp;
- register struct socket *so;
- register int *solockp;
- struct nfsd *nfsd = nsd->nsd_nfsd;
+ mbuf_t m, mrep;
+ struct nfsrv_sock *slp;
+ struct nfsd *nfsd;
struct nfsrv_descript *nd = NULL;
- struct mbuf *mreq;
- int error = 0, cacherep, s, sotype, writes_todo;
- int procrastinate;
+ int error = 0, cacherep, writes_todo;
+ int siz, procrastinate, opcnt = 0;
u_quad_t cur_usec;
- extern void nfs_aio_thread_init();
+ struct timeval now;
+ struct vfs_context context;
+ struct timespec to;
#ifndef nolint
cacherep = RC_DOIT;
writes_todo = 0;
#endif
- s = splnet();
- if (nfsd == (struct nfsd *)0) {
- MALLOC(nfsd, struct nfsd *, sizeof(struct nfsd), M_NFSD, M_WAITOK);
- nsd->nsd_nfsd = nfsd;
- bzero((caddr_t)nfsd, sizeof (struct nfsd));
- nfsd->nfsd_procp = p;
- TAILQ_INSERT_TAIL(&nfsd_head, nfsd, nfsd_chain);
- nfs_numnfsd++;
- nfs_aio_thread_init();
- }
+
+ MALLOC(nfsd, struct nfsd *, sizeof(struct nfsd), M_NFSD, M_WAITOK);
+ if (!nfsd)
+ return (ENOMEM);
+ bzero(nfsd, sizeof(struct nfsd));
+ lck_mtx_lock(nfsd_mutex);
+ if (nfsd_thread_count++ == 0)
+ nfsrv_initcache(); /* Init the server request cache */
+
+ TAILQ_INSERT_TAIL(&nfsd_head, nfsd, nfsd_chain);
+ lck_mtx_unlock(nfsd_mutex);
+
+ context.vc_thread = current_thread();
+
+ /* Set time out so that nfsd threads can wake up a see if they are still needed. */
+ to.tv_sec = 5;
+ to.tv_nsec = 0;
+
/*
* Loop getting rpc requests until SIGKILL.
*/
for (;;) {
- if ((nfsd->nfsd_flag & NFSD_REQINPROG) == 0) {
- while (nfsd->nfsd_slp == (struct nfssvc_sock *)0 &&
- (nfsd_head_flag & NFSD_CHECKSLP) == 0) {
+ if (nfsd_thread_max <= 0) {
+ /* NFS server shutting down, get out ASAP */
+ error = EINTR;
+ slp = nfsd->nfsd_slp;
+ } else if (nfsd->nfsd_flag & NFSD_REQINPROG) {
+ /* already have some work to do */
+ error = 0;
+ slp = nfsd->nfsd_slp;
+ } else {
+ /* need to find work to do */
+ error = 0;
+ lck_mtx_lock(nfsd_mutex);
+ while (!nfsd->nfsd_slp && TAILQ_EMPTY(&nfsrv_sockwait) && TAILQ_EMPTY(&nfsrv_sockwork)) {
+ if (nfsd_thread_count > nfsd_thread_max) {
+ /*
+ * If we have no socket and there are more
+ * nfsd threads than configured, let's exit.
+ */
+ error = 0;
+ goto done;
+ }
nfsd->nfsd_flag |= NFSD_WAITING;
- nfsd_waiting++;
- error = tsleep((caddr_t)nfsd, PSOCK | PCATCH,
- "nfsd", 0);
- nfsd_waiting--;
- if (error)
+ TAILQ_INSERT_HEAD(&nfsd_queue, nfsd, nfsd_queue);
+ error = msleep(nfsd, nfsd_mutex, PSOCK | PCATCH, "nfsd", &to);
+ if (error) {
+ if (nfsd->nfsd_flag & NFSD_WAITING) {
+ TAILQ_REMOVE(&nfsd_queue, nfsd, nfsd_queue);
+ nfsd->nfsd_flag &= ~NFSD_WAITING;
+ }
+ if (error == EWOULDBLOCK)
+ continue;
goto done;
+ }
}
- if (nfsd->nfsd_slp == (struct nfssvc_sock *)0 &&
- (nfsd_head_flag & NFSD_CHECKSLP) != 0) {
- for (slp = nfssvc_sockhead.tqh_first; slp != 0;
- slp = slp->ns_chain.tqe_next) {
- if ((slp->ns_flag & (SLP_VALID | SLP_DOREC))
- == (SLP_VALID | SLP_DOREC)) {
- slp->ns_flag &= ~SLP_DOREC;
- slp->ns_sref++;
- nfsd->nfsd_slp = slp;
- break;
- }
+ slp = nfsd->nfsd_slp;
+ if (!slp && !TAILQ_EMPTY(&nfsrv_sockwait)) {
+ /* look for a socket to work on in the wait queue */
+ while ((slp = TAILQ_FIRST(&nfsrv_sockwait))) {
+ lck_rw_lock_exclusive(&slp->ns_rwlock);
+ /* remove from the head of the queue */
+ TAILQ_REMOVE(&nfsrv_sockwait, slp, ns_svcq);
+ slp->ns_flag &= ~SLP_WAITQ;
+ if ((slp->ns_flag & SLP_VALID) && (slp->ns_flag & SLP_WORKTODO))
+ break;
+ /* nothing to do, so skip this socket */
+ lck_rw_done(&slp->ns_rwlock);
}
- if (slp == 0)
- nfsd_head_flag &= ~NFSD_CHECKSLP;
}
- if ((slp = nfsd->nfsd_slp) == (struct nfssvc_sock *)0)
+ if (!slp && !TAILQ_EMPTY(&nfsrv_sockwork)) {
+ /* look for a socket to work on in the work queue */
+ while ((slp = TAILQ_FIRST(&nfsrv_sockwork))) {
+ lck_rw_lock_exclusive(&slp->ns_rwlock);
+ /* remove from the head of the queue */
+ TAILQ_REMOVE(&nfsrv_sockwork, slp, ns_svcq);
+ slp->ns_flag &= ~SLP_WORKQ;
+ if ((slp->ns_flag & SLP_VALID) && (slp->ns_flag & SLP_WORKTODO))
+ break;
+ /* nothing to do, so skip this socket */
+ lck_rw_done(&slp->ns_rwlock);
+ }
+ }
+ if (!nfsd->nfsd_slp && slp) {
+ /* we found a socket to work on, grab a reference */
+ slp->ns_sref++;
+ microuptime(&now);
+ slp->ns_timestamp = now.tv_sec;
+ /* We keep the socket list in least recently used order for reaping idle sockets */
+ TAILQ_REMOVE(&nfsrv_socklist, slp, ns_chain);
+ TAILQ_INSERT_TAIL(&nfsrv_socklist, slp, ns_chain);
+ nfsd->nfsd_slp = slp;
+ opcnt = 0;
+ /* and put it at the back of the work queue */
+ TAILQ_INSERT_TAIL(&nfsrv_sockwork, slp, ns_svcq);
+ slp->ns_flag |= SLP_WORKQ;
+ lck_rw_done(&slp->ns_rwlock);
+ }
+ lck_mtx_unlock(nfsd_mutex);
+ if (!slp)
continue;
+ lck_rw_lock_exclusive(&slp->ns_rwlock);
if (slp->ns_flag & SLP_VALID) {
- if (slp->ns_flag & SLP_DISCONN)
- nfsrv_zapsock(slp);
- else if (slp->ns_flag & SLP_NEEDQ) {
+ if ((slp->ns_flag & (SLP_NEEDQ|SLP_DISCONN)) == SLP_NEEDQ) {
slp->ns_flag &= ~SLP_NEEDQ;
- (void) nfs_sndlock(&slp->ns_solock,
- (struct nfsreq *)0);
- thread_funnel_switch(KERNEL_FUNNEL, NETWORK_FUNNEL);
- nfsrv_rcv(slp->ns_so, (caddr_t)slp,
- M_WAIT);
- thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
- nfs_sndunlock(&slp->ns_solock);
+ nfsrv_rcv_locked(slp->ns_so, slp, MBUF_WAITOK);
}
+ if (slp->ns_flag & SLP_DISCONN)
+ nfsrv_zapsock(slp);
error = nfsrv_dorec(slp, nfsd, &nd);
- cur_usec = (u_quad_t)time.tv_sec * 1000000 +
- (u_quad_t)time.tv_usec;
- if (error && slp->ns_tq.lh_first &&
- slp->ns_tq.lh_first->nd_time <= cur_usec) {
- error = 0;
- cacherep = RC_DOIT;
- writes_todo = 1;
- } else
- writes_todo = 0;
+ if (error == EINVAL) { // RPCSEC_GSS drop
+ if (slp->ns_sotype == SOCK_STREAM)
+ nfsrv_zapsock(slp); // drop connection
+ }
+ writes_todo = 0;
+ if (error && (slp->ns_wgtime || (slp->ns_flag & SLP_DOWRITES))) {
+ microuptime(&now);
+ cur_usec = (u_quad_t)now.tv_sec * 1000000 +
+ (u_quad_t)now.tv_usec;
+ if (slp->ns_wgtime <= cur_usec) {
+ error = 0;
+ cacherep = RC_DOIT;
+ writes_todo = 1;
+ }
+ slp->ns_flag &= ~SLP_DOWRITES;
+ }
nfsd->nfsd_flag |= NFSD_REQINPROG;
}
- } else {
- error = 0;
- slp = nfsd->nfsd_slp;
+ lck_rw_done(&slp->ns_rwlock);
}
- if (error || (slp->ns_flag & SLP_VALID) == 0) {
+ if (error || (slp && !(slp->ns_flag & SLP_VALID))) {
if (nd) {
- _FREE_ZONE((caddr_t)nd,
- sizeof *nd, M_NFSRVDESC);
+ nfsm_chain_cleanup(&nd->nd_nmreq);
+ if (nd->nd_nam2)
+ mbuf_freem(nd->nd_nam2);
+ if (IS_VALID_CRED(nd->nd_cr))
+ kauth_cred_unref(&nd->nd_cr);
+ if (nd->nd_gss_context)
+ nfs_gss_svc_ctx_deref(nd->nd_gss_context);
+ FREE_ZONE(nd, sizeof(*nd), M_NFSRVDESC);
nd = NULL;
}
- nfsd->nfsd_slp = (struct nfssvc_sock *)0;
+ nfsd->nfsd_slp = NULL;
nfsd->nfsd_flag &= ~NFSD_REQINPROG;
- nfsrv_slpderef(slp);
+ if (slp)
+ nfsrv_slpderef(slp);
+ if (nfsd_thread_max <= 0)
+ break;
continue;
}
- splx(s);
- so = slp->ns_so;
- sotype = so->so_type;
- if (so->so_proto->pr_flags & PR_CONNREQUIRED)
- solockp = &slp->ns_solock;
- else
- solockp = (int *)0;
if (nd) {
- nd->nd_starttime = time;
+ microuptime(&nd->nd_starttime);
if (nd->nd_nam2)
nd->nd_nam = nd->nd_nam2;
else
nd->nd_nam = slp->ns_nam;
- /*
- * Check to see if authorization is needed.
- */
- if (nfsd->nfsd_flag & NFSD_NEEDAUTH) {
- nfsd->nfsd_flag &= ~NFSD_NEEDAUTH;
- nsd->nsd_haddr = mtod(nd->nd_nam,
- struct sockaddr_in *)->sin_addr.s_addr;
- nsd->nsd_authlen = nfsd->nfsd_authlen;
- nsd->nsd_verflen = nfsd->nfsd_verflen;
- if (!copyout(nfsd->nfsd_authstr,nsd->nsd_authstr,
- nfsd->nfsd_authlen) &&
- !copyout(nfsd->nfsd_verfstr, nsd->nsd_verfstr,
- nfsd->nfsd_verflen) &&
- !copyout((caddr_t)nsd, argp, sizeof (*nsd)))
- return (ENEEDAUTH);
- cacherep = RC_DROPIT;
- } else
- cacherep = nfsrv_getcache(nd, slp, &mreq);
+ cacherep = nfsrv_getcache(nd, slp, &mrep);
- /*
- * Check for just starting up for NQNFS and send
- * fake "try again later" replies to the NQNFS clients.
- */
- if (notstarted && nqnfsstarttime <= time.tv_sec) {
- if (modify_flag) {
- nqnfsstarttime = time.tv_sec + nqsrv_writeslack;
- modify_flag = 0;
- } else
- notstarted = 0;
- }
- if (notstarted) {
- if ((nd->nd_flag & ND_NQNFS) == 0)
- cacherep = RC_DROPIT;
- else if (nd->nd_procnum != NFSPROC_WRITE) {
- nd->nd_procnum = NFSPROC_NOOP;
- nd->nd_repstat = NQNFS_TRYLATER;
- cacherep = RC_DOIT;
- } else
- modify_flag = 1;
- } else if (nfsd->nfsd_flag & NFSD_AUTHFAIL) {
- nfsd->nfsd_flag &= ~NFSD_AUTHFAIL;
- nd->nd_procnum = NFSPROC_NOOP;
- nd->nd_repstat = (NFSERR_AUTHERR | AUTH_TOOWEAK);
- cacherep = RC_DOIT;
- } else if (nfs_privport) {
- /* Check if source port is privileged */
- u_short port;
- struct sockaddr *nam = nd->nd_nam;
- struct sockaddr_in *sin;
-
- sin = (struct sockaddr_in *)nam;
- port = ntohs(sin->sin_port);
- if (port >= IPPORT_RESERVED &&
- nd->nd_procnum != NFSPROC_NULL) {
+ if (nfsrv_require_resv_port) {
+ /* Check if source port is a reserved port */
+ in_port_t port = 0;
+ struct sockaddr *saddr = mbuf_data(nd->nd_nam);
+
+ if (saddr->sa_family == AF_INET)
+ port = ntohs(((struct sockaddr_in*)saddr)->sin_port);
+ else if (saddr->sa_family == AF_INET6)
+ port = ntohs(((struct sockaddr_in6*)saddr)->sin6_port);
+ if ((port >= IPPORT_RESERVED) && (nd->nd_procnum != NFSPROC_NULL)) {
nd->nd_procnum = NFSPROC_NOOP;
nd->nd_repstat = (NFSERR_AUTHERR | AUTH_TOOWEAK);
cacherep = RC_DOIT;
- printf("NFS request from unprivileged port (%s:%d)\n",
- (char *)(inet_ntoa(sin->sin_addr)), port);
}
}
}
/*
- * Loop to get all the write rpc relies that have been
+ * Loop to get all the write RPC replies that have been
* gathered together.
*/
do {
switch (cacherep) {
case RC_DOIT:
- if (nd && (nd->nd_flag & ND_NFSV3))
- procrastinate = nfsrvw_procrastinate_v3;
+ if (nd && (nd->nd_vers == NFS_VER3))
+ procrastinate = nfsrv_wg_delay_v3;
else
- procrastinate = nfsrvw_procrastinate;
- if (writes_todo || (nd->nd_procnum == NFSPROC_WRITE &&
- procrastinate > 0 && !notstarted))
- error = nfsrv_writegather(&nd, slp,
- nfsd->nfsd_procp, &mreq);
+ procrastinate = nfsrv_wg_delay;
+ lck_rw_lock_shared(&nfsrv_export_rwlock);
+ context.vc_ucred = NULL;
+ if (writes_todo || ((nd->nd_procnum == NFSPROC_WRITE) && (procrastinate > 0)))
+ error = nfsrv_writegather(&nd, slp, &context, &mrep);
else
- error = (*(nfsrv3_procs[nd->nd_procnum]))(nd,
- slp, nfsd->nfsd_procp, &mreq);
- if (mreq == NULL)
+ error = (*(nfsrv_procs[nd->nd_procnum]))(nd, slp, &context, &mrep);
+ lck_rw_done(&nfsrv_export_rwlock);
+ if (mrep == NULL) {
+ /*
+ * If this is a stream socket and we are not going
+ * to send a reply we better close the connection
+ * so the client doesn't hang.
+ */
+ if (error && slp->ns_sotype == SOCK_STREAM) {
+ lck_rw_lock_exclusive(&slp->ns_rwlock);
+ nfsrv_zapsock(slp);
+ lck_rw_done(&slp->ns_rwlock);
+ printf("NFS server: NULL reply from proc = %d error = %d\n",
+ nd->nd_procnum, error);
+ }
break;
+
+ }
if (error) {
- if (nd->nd_procnum != NQNFSPROC_VACATED)
- nfsstats.srv_errs++;
- nfsrv_updatecache(nd, FALSE, mreq);
- if (nd->nd_nam2)
- m_freem(nd->nd_nam2);
+ OSAddAtomic64(1, &nfsstats.srv_errs);
+ nfsrv_updatecache(nd, FALSE, mrep);
+ if (nd->nd_nam2) {
+ mbuf_freem(nd->nd_nam2);
+ nd->nd_nam2 = NULL;
+ }
break;
}
- nfsstats.srvrpccnt[nd->nd_procnum]++;
- nfsrv_updatecache(nd, TRUE, mreq);
- nd->nd_mrep = (struct mbuf *)0;
+ OSAddAtomic64(1, &nfsstats.srvrpccnt[nd->nd_procnum]);
+ nfsrv_updatecache(nd, TRUE, mrep);
+ /* FALLTHRU */
+
case RC_REPLY:
- m = mreq;
+ if (nd->nd_gss_mb != NULL) { // It's RPCSEC_GSS
+ /*
+ * Need to checksum or encrypt the reply
+ */
+ error = nfs_gss_svc_protect_reply(nd, mrep);
+ if (error) {
+ mbuf_freem(mrep);
+ break;
+ }
+ }
+
+ /*
+ * Get the total size of the reply
+ */
+ m = mrep;
siz = 0;
while (m) {
- siz += m->m_len;
- m = m->m_next;
+ siz += mbuf_len(m);
+ m = mbuf_next(m);
}
if (siz <= 0 || siz > NFS_MAXPACKET) {
printf("mbuf siz=%d\n",siz);
panic("Bad nfs svc reply");
}
- m = mreq;
- m->m_pkthdr.len = siz;
- m->m_pkthdr.rcvif = (struct ifnet *)0;
+ m = mrep;
+ mbuf_pkthdr_setlen(m, siz);
+ error = mbuf_pkthdr_setrcvif(m, NULL);
+ if (error)
+ panic("nfsd setrcvif failed: %d", error);
/*
* For stream protocols, prepend a Sun RPC
* Record Mark.
*/
- if (sotype == SOCK_STREAM) {
- M_PREPEND(m, NFSX_UNSIGNED, M_WAIT);
- *mtod(m, u_long *) = htonl(0x80000000 | siz);
+ if (slp->ns_sotype == SOCK_STREAM) {
+ error = mbuf_prepend(&m, NFSX_UNSIGNED, MBUF_WAITOK);
+ if (!error)
+ *(u_int32_t*)mbuf_data(m) = htonl(0x80000000 | siz);
}
- if (solockp)
- (void) nfs_sndlock(solockp, (struct nfsreq *)0);
- if (slp->ns_flag & SLP_VALID)
- error = nfs_send(so, nd->nd_nam2, m, NULL);
- else {
- error = EPIPE;
- m_freem(m);
+ if (!error) {
+ if (slp->ns_flag & SLP_VALID) {
+ error = nfsrv_send(slp, nd->nd_nam2, m);
+ } else {
+ error = EPIPE;
+ mbuf_freem(m);
+ }
+ } else {
+ mbuf_freem(m);
}
- if (nfsrtton)
- nfsd_rt(sotype, nd, cacherep);
- if (nd->nd_nam2)
- MFREE(nd->nd_nam2, m);
- if (nd->nd_mrep)
- m_freem(nd->nd_mrep);
- if (error == EPIPE)
+ mrep = NULL;
+ if (nd->nd_nam2) {
+ mbuf_freem(nd->nd_nam2);
+ nd->nd_nam2 = NULL;
+ }
+ if (error == EPIPE) {
+ lck_rw_lock_exclusive(&slp->ns_rwlock);
nfsrv_zapsock(slp);
- if (solockp)
- nfs_sndunlock(solockp);
+ lck_rw_done(&slp->ns_rwlock);
+ }
if (error == EINTR || error == ERESTART) {
- _FREE_ZONE((caddr_t)nd,
- sizeof *nd, M_NFSRVDESC);
+ nfsm_chain_cleanup(&nd->nd_nmreq);
+ if (IS_VALID_CRED(nd->nd_cr))
+ kauth_cred_unref(&nd->nd_cr);
+ if (nd->nd_gss_context)
+ nfs_gss_svc_ctx_deref(nd->nd_gss_context);
+ FREE_ZONE(nd, sizeof(*nd), M_NFSRVDESC);
nfsrv_slpderef(slp);
- s = splnet();
+ lck_mtx_lock(nfsd_mutex);
goto done;
}
break;
case RC_DROPIT:
- if (nfsrtton)
- nfsd_rt(sotype, nd, cacherep);
- m_freem(nd->nd_mrep);
- m_freem(nd->nd_nam2);
+ mbuf_freem(nd->nd_nam2);
+ nd->nd_nam2 = NULL;
break;
};
+ opcnt++;
if (nd) {
- FREE_ZONE((caddr_t)nd, sizeof *nd, M_NFSRVDESC);
+ nfsm_chain_cleanup(&nd->nd_nmreq);
+ if (nd->nd_nam2)
+ mbuf_freem(nd->nd_nam2);
+ if (IS_VALID_CRED(nd->nd_cr))
+ kauth_cred_unref(&nd->nd_cr);
+ if (nd->nd_gss_context)
+ nfs_gss_svc_ctx_deref(nd->nd_gss_context);
+ FREE_ZONE(nd, sizeof(*nd), M_NFSRVDESC);
nd = NULL;
}
* Check to see if there are outstanding writes that
* need to be serviced.
*/
- cur_usec = (u_quad_t)time.tv_sec * 1000000 +
- (u_quad_t)time.tv_usec;
- s = splsoftclock();
- if (slp->ns_tq.lh_first &&
- slp->ns_tq.lh_first->nd_time <= cur_usec) {
- cacherep = RC_DOIT;
- writes_todo = 1;
- } else
- writes_todo = 0;
- splx(s);
+ writes_todo = 0;
+ if (slp->ns_wgtime) {
+ microuptime(&now);
+ cur_usec = (u_quad_t)now.tv_sec * 1000000 +
+ (u_quad_t)now.tv_usec;
+ if (slp->ns_wgtime <= cur_usec) {
+ cacherep = RC_DOIT;
+ writes_todo = 1;
+ }
+ }
} while (writes_todo);
- s = splnet();
- if (nfsrv_dorec(slp, nfsd, &nd)) {
+
+ nd = NULL;
+ if (TAILQ_EMPTY(&nfsrv_sockwait) && (opcnt < 8)) {
+ lck_rw_lock_exclusive(&slp->ns_rwlock);
+ error = nfsrv_dorec(slp, nfsd, &nd);
+ if (error == EINVAL) { // RPCSEC_GSS drop
+ if (slp->ns_sotype == SOCK_STREAM)
+ nfsrv_zapsock(slp); // drop connection
+ }
+ lck_rw_done(&slp->ns_rwlock);
+ }
+ if (!nd) {
+ /* drop our reference on the socket */
nfsd->nfsd_flag &= ~NFSD_REQINPROG;
nfsd->nfsd_slp = NULL;
nfsrv_slpderef(slp);
}
}
+ lck_mtx_lock(nfsd_mutex);
done:
TAILQ_REMOVE(&nfsd_head, nfsd, nfsd_chain);
- splx(s);
- _FREE((caddr_t)nfsd, M_NFSD);
- nsd->nsd_nfsd = (struct nfsd *)0;
- if (--nfs_numnfsd == 0)
- nfsrv_init(TRUE); /* Reinitialize everything */
+ FREE(nfsd, M_NFSD);
+ if (--nfsd_thread_count == 0)
+ nfsrv_cleanup();
+ lck_mtx_unlock(nfsd_mutex);
return (error);
}
-#endif /* NFS_NOSERVER */
-
-int nfs_defect = 0;
-/* XXX CSM 11/25/97 Upgrade sysctl.h someday */
-#ifdef notyet
-SYSCTL_INT(_vfs_nfs, OID_AUTO, defect, CTLFLAG_RW, &nfs_defect, 0, "");
-#endif
-static int nfssvc_iod_continue(int);
-
-/*
- * Asynchronous I/O daemons for client nfs.
- * They do read-ahead and write-behind operations on the block I/O cache.
- * Never returns unless it fails or gets killed.
- */
-static int
-nfssvc_iod(p)
- struct proc *p;
-{
- register struct buf *bp;
- register int i, myiod;
- struct nfsmount *nmp;
- int error = 0;
- struct uthread *ut;
-
- /*
- * Assign my position or return error if too many already running
- */
- myiod = -1;
- for (i = 0; i < NFS_MAXASYNCDAEMON; i++)
- if (nfs_asyncdaemon[i] == 0) {
- nfs_asyncdaemon[i]++;
- myiod = i;
- break;
- }
- if (myiod == -1)
- return (EBUSY);
- nfs_numasync++;
-
- /* stuff myiod into uthread to get off local stack for
- continuation */
-
- ut = get_bsdthread_info(current_act());
- ut->uu_state.uu_nfs_myiod = myiod; /* squirrel away for continuation */
-
- nfssvc_iod_continue(0);
- /* NOTREACHED */
-
-}
-
-/*
- * Continuation for Asynchronous I/O daemons for client nfs.
- */
-static int
-nfssvc_iod_continue(error)
+int
+nfssvc_export(user_addr_t argp)
{
- register struct buf *bp;
- register int i, myiod;
- struct nfsmount *nmp;
- struct uthread *ut;
- struct proc *p;
+ int error = 0, is_64bit;
+ struct user_nfs_export_args unxa;
+ vfs_context_t ctx = vfs_context_current();
- /*
- * real myiod is stored in uthread, recover it
- */
- ut = get_bsdthread_info(current_act());
- myiod = ut->uu_state.uu_nfs_myiod;
- p = get_bsdtask_info(current_task());
+ is_64bit = IS_64BIT_PROCESS(vfs_context_proc(ctx));
- /*
- * Just loop around doin our stuff until SIGKILL
- * - actually we don't loop with continuations...
- */
- for (;;) {
- while (((nmp = nfs_iodmount[myiod]) == NULL
- || nmp->nm_bufq.tqh_first == NULL)
- && error == 0) {
- if (nmp)
- nmp->nm_bufqiods--;
- nfs_iodwant[myiod] = p;
- nfs_iodmount[myiod] = NULL;
- error = tsleep0((caddr_t)&nfs_iodwant[myiod],
- PWAIT | PCATCH, "nfsidl", 0, nfssvc_iod_continue);
- /* NOTREACHED */
- }
- if (error) {
- nfs_asyncdaemon[myiod] = 0;
- if (nmp) nmp->nm_bufqiods--;
- nfs_iodwant[myiod] = NULL;
- nfs_iodmount[myiod] = NULL;
- nfs_numasync--;
- if (error == EINTR || error == ERESTART)
- error = 0;
-#if defined (__i386__)
- return(error);
-#else
- unix_syscall_return(error);
-#endif
- }
- while ((bp = nmp->nm_bufq.tqh_first) != NULL) {
- /* Take one off the front of the list */
- TAILQ_REMOVE(&nmp->nm_bufq, bp, b_freelist);
- nmp->nm_bufqlen--;
- if (nmp->nm_bufqwant && nmp->nm_bufqlen < 2 * nfs_numasync) {
- nmp->nm_bufqwant = FALSE;
- wakeup(&nmp->nm_bufq);
- }
- if (ISSET(bp->b_flags, B_READ))
- (void) nfs_doio(bp, bp->b_rcred, (struct proc *)0);
- else
- (void) nfs_doio(bp, bp->b_wcred, (struct proc *)0);
-
- /*
- * If there are more than one iod on this mount, then defect
- * so that the iods can be shared out fairly between the mounts
- */
- if (nfs_defect && nmp->nm_bufqiods > 1) {
- NFS_DPF(ASYNCIO,
- ("nfssvc_iod: iod %d defecting from mount %p\n",
- myiod, nmp));
- nfs_iodmount[myiod] = NULL;
- nmp->nm_bufqiods--;
- break;
+ /* copy in pointers to path and export args */
+ if (is_64bit) {
+ error = copyin(argp, (caddr_t)&unxa, sizeof(unxa));
+ } else {
+ struct nfs_export_args tnxa;
+ error = copyin(argp, (caddr_t)&tnxa, sizeof(tnxa));
+ if (error == 0) {
+ /* munge into LP64 version of nfs_export_args structure */
+ unxa.nxa_fsid = tnxa.nxa_fsid;
+ unxa.nxa_expid = tnxa.nxa_expid;
+ unxa.nxa_fspath = CAST_USER_ADDR_T(tnxa.nxa_fspath);
+ unxa.nxa_exppath = CAST_USER_ADDR_T(tnxa.nxa_exppath);
+ unxa.nxa_flags = tnxa.nxa_flags;
+ unxa.nxa_netcount = tnxa.nxa_netcount;
+ unxa.nxa_nets = CAST_USER_ADDR_T(tnxa.nxa_nets);
}
- }
}
+ if (error)
+ return (error);
+
+ error = nfsrv_export(&unxa, ctx);
+
+ return (error);
}
/*
- * Shut down a socket associated with an nfssvc_sock structure.
+ * Shut down a socket associated with an nfsrv_sock structure.
* Should be called with the send lock set, if required.
* The trick here is to increment the sref at the start, so that the nfsds
* will stop using it and clear ns_flag at the end so that it will not be
* reassigned during cleanup.
*/
-static void
-nfsrv_zapsock(slp)
- register struct nfssvc_sock *slp;
+void
+nfsrv_zapsock(struct nfsrv_sock *slp)
{
- register struct nfsuid *nuidp, *nnuidp;
- register struct nfsrv_descript *nwp, *nnwp;
- struct socket *so;
- struct file *fp;
- struct mbuf *m;
- int s;
+ socket_t so;
+ if ((slp->ns_flag & SLP_VALID) == 0)
+ return;
slp->ns_flag &= ~SLP_ALLFLAGS;
- fp = slp->ns_fp;
- if (fp) {
- slp->ns_fp = (struct file *)0;
- so = slp->ns_so;
- thread_funnel_switch(KERNEL_FUNNEL, NETWORK_FUNNEL);
- so->so_upcall = NULL;
- so->so_rcv.sb_flags &= ~SB_UPCALL;
- soshutdown(so, 2);
- thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
- closef(fp, (struct proc *)0);
- if (slp->ns_nam)
- MFREE(slp->ns_nam, m);
- m_freem(slp->ns_raw);
- m_freem(slp->ns_rec);
- for (nuidp = slp->ns_uidlruhead.tqh_first; nuidp != 0;
- nuidp = nnuidp) {
- nnuidp = nuidp->nu_lru.tqe_next;
- LIST_REMOVE(nuidp, nu_hash);
- TAILQ_REMOVE(&slp->ns_uidlruhead, nuidp, nu_lru);
- if (nuidp->nu_flag & NU_NAM)
- m_freem(nuidp->nu_nam);
- _FREE_ZONE((caddr_t)nuidp,
- sizeof (struct nfsuid), M_NFSUID);
- }
- s = splsoftclock();
- for (nwp = slp->ns_tq.lh_first; nwp; nwp = nnwp) {
- nnwp = nwp->nd_tq.le_next;
- LIST_REMOVE(nwp, nd_tq);
- _FREE_ZONE((caddr_t)nwp, sizeof *nwp, M_NFSRVDESC);
- }
- LIST_INIT(&slp->ns_tq);
- splx(s);
- }
+
+ so = slp->ns_so;
+ if (so == NULL)
+ return;
+
+ sock_setupcall(so, NULL, NULL);
+ sock_shutdown(so, SHUT_RDWR);
+
+ /*
+ * Remove from the up-call queue
+ */
+ nfsrv_uc_dequeue(slp);
}
/*
- * Get an authorization string for the uid by having the mount_nfs sitting
- * on this mount point porpous out of the kernel and do it.
+ * cleanup and release a server socket structure.
*/
-int
-nfs_getauth(nmp, rep, cred, auth_str, auth_len, verf_str, verf_len, key)
- register struct nfsmount *nmp;
- struct nfsreq *rep;
- struct ucred *cred;
- char **auth_str;
- int *auth_len;
- char *verf_str;
- int *verf_len;
- NFSKERBKEY_T key; /* return session key */
+void
+nfsrv_slpfree(struct nfsrv_sock *slp)
{
- int error = 0;
+ struct nfsrv_descript *nwp, *nnwp;
- while ((nmp->nm_flag & NFSMNT_WAITAUTH) == 0) {
- nmp->nm_flag |= NFSMNT_WANTAUTH;
- (void) tsleep((caddr_t)&nmp->nm_authtype, PSOCK,
- "nfsauth1", 2 * hz);
- error = nfs_sigintr(nmp, rep, rep->r_procp);
- if (error) {
- nmp->nm_flag &= ~NFSMNT_WANTAUTH;
- return (error);
- }
- }
- nmp->nm_flag &= ~(NFSMNT_WAITAUTH | NFSMNT_WANTAUTH);
- MALLOC(*auth_str, char *, RPCAUTH_MAXSIZ, M_TEMP, M_WAITOK);
- nmp->nm_authstr = *auth_str;
- nmp->nm_authlen = RPCAUTH_MAXSIZ;
- nmp->nm_verfstr = verf_str;
- nmp->nm_verflen = *verf_len;
- nmp->nm_authuid = cred->cr_uid;
- wakeup((caddr_t)&nmp->nm_authstr);
-
- /*
- * And wait for mount_nfs to do its stuff.
- */
- while ((nmp->nm_flag & NFSMNT_HASAUTH) == 0 && error == 0) {
- (void) tsleep((caddr_t)&nmp->nm_authlen, PSOCK,
- "nfsauth2", 2 * hz);
- error = nfs_sigintr(nmp, rep, rep->r_procp);
+ if (slp->ns_so) {
+ sock_release(slp->ns_so);
+ slp->ns_so = NULL;
}
- if (nmp->nm_flag & NFSMNT_AUTHERR) {
- nmp->nm_flag &= ~NFSMNT_AUTHERR;
- error = EAUTH;
- }
- if (error)
- _FREE((caddr_t)*auth_str, M_TEMP);
- else {
- *auth_len = nmp->nm_authlen;
- *verf_len = nmp->nm_verflen;
- bcopy((caddr_t)nmp->nm_key, (caddr_t)key, sizeof (key));
+ if (slp->ns_nam)
+ mbuf_free(slp->ns_nam);
+ if (slp->ns_raw)
+ mbuf_freem(slp->ns_raw);
+ if (slp->ns_rec)
+ mbuf_freem(slp->ns_rec);
+ if (slp->ns_frag)
+ mbuf_freem(slp->ns_frag);
+ slp->ns_nam = slp->ns_raw = slp->ns_rec = slp->ns_frag = NULL;
+ slp->ns_reccnt = 0;
+
+ for (nwp = slp->ns_tq.lh_first; nwp; nwp = nnwp) {
+ nnwp = nwp->nd_tq.le_next;
+ LIST_REMOVE(nwp, nd_tq);
+ nfsm_chain_cleanup(&nwp->nd_nmreq);
+ if (nwp->nd_mrep)
+ mbuf_freem(nwp->nd_mrep);
+ if (nwp->nd_nam2)
+ mbuf_freem(nwp->nd_nam2);
+ if (IS_VALID_CRED(nwp->nd_cr))
+ kauth_cred_unref(&nwp->nd_cr);
+ if (nwp->nd_gss_context)
+ nfs_gss_svc_ctx_deref(nwp->nd_gss_context);
+ FREE_ZONE(nwp, sizeof(*nwp), M_NFSRVDESC);
}
- nmp->nm_flag &= ~NFSMNT_HASAUTH;
- nmp->nm_flag |= NFSMNT_WAITAUTH;
- if (nmp->nm_flag & NFSMNT_WANTAUTH) {
- nmp->nm_flag &= ~NFSMNT_WANTAUTH;
- wakeup((caddr_t)&nmp->nm_authtype);
- }
- return (error);
+ LIST_INIT(&slp->ns_tq);
+
+ lck_rw_destroy(&slp->ns_rwlock, nfsrv_slp_rwlock_group);
+ lck_mtx_destroy(&slp->ns_wgmutex, nfsrv_slp_mutex_group);
+ FREE(slp, M_NFSSVC);
}
/*
- * Get a nickname authenticator and verifier.
+ * Derefence a server socket structure. If it has no more references and
+ * is no longer valid, you can throw it away.
*/
-int
-nfs_getnickauth(nmp, cred, auth_str, auth_len, verf_str, verf_len)
- struct nfsmount *nmp;
- struct ucred *cred;
- char **auth_str;
- int *auth_len;
- char *verf_str;
- int verf_len;
+static void
+nfsrv_slpderef_locked(struct nfsrv_sock *slp)
{
- register struct nfsuid *nuidp;
- register u_long *nickp, *verfp;
- struct timeval ktvin, ktvout;
-
-#if DIAGNOSTIC
- if (verf_len < (4 * NFSX_UNSIGNED))
- panic("nfs_getnickauth verf too small");
-#endif
- for (nuidp = NMUIDHASH(nmp, cred->cr_uid)->lh_first;
- nuidp != 0; nuidp = nuidp->nu_hash.le_next) {
- if (nuidp->nu_cr.cr_uid == cred->cr_uid)
- break;
+ lck_rw_lock_exclusive(&slp->ns_rwlock);
+ slp->ns_sref--;
+
+ if (slp->ns_sref || (slp->ns_flag & SLP_VALID)) {
+ if ((slp->ns_flag & SLP_QUEUED) && !(slp->ns_flag & SLP_WORKTODO)) {
+ /* remove socket from queue since there's no work */
+ if (slp->ns_flag & SLP_WAITQ)
+ TAILQ_REMOVE(&nfsrv_sockwait, slp, ns_svcq);
+ else
+ TAILQ_REMOVE(&nfsrv_sockwork, slp, ns_svcq);
+ slp->ns_flag &= ~SLP_QUEUED;
+ }
+ lck_rw_done(&slp->ns_rwlock);
+ return;
}
- if (!nuidp || nuidp->nu_expire < time.tv_sec)
- return (EACCES);
- /*
- * Move to the end of the lru list (end of lru == most recently used).
- */
- TAILQ_REMOVE(&nmp->nm_uidlruhead, nuidp, nu_lru);
- TAILQ_INSERT_TAIL(&nmp->nm_uidlruhead, nuidp, nu_lru);
+ /* This socket is no longer valid, so we'll get rid of it */
- MALLOC(nickp, u_long *, 2 * NFSX_UNSIGNED, M_TEMP, M_WAITOK);
- *nickp++ = txdr_unsigned(RPCAKN_NICKNAME);
- *nickp = txdr_unsigned(nuidp->nu_nickname);
- *auth_str = (char *)nickp;
- *auth_len = 2 * NFSX_UNSIGNED;
+ if (slp->ns_flag & SLP_QUEUED) {
+ if (slp->ns_flag & SLP_WAITQ)
+ TAILQ_REMOVE(&nfsrv_sockwait, slp, ns_svcq);
+ else
+ TAILQ_REMOVE(&nfsrv_sockwork, slp, ns_svcq);
+ slp->ns_flag &= ~SLP_QUEUED;
+ }
+ lck_rw_done(&slp->ns_rwlock);
- /*
- * Now we must encrypt the verifier and package it up.
- */
- verfp = (u_long *)verf_str;
- *verfp++ = txdr_unsigned(RPCAKN_NICKNAME);
- if (time.tv_sec > nuidp->nu_timestamp.tv_sec ||
- (time.tv_sec == nuidp->nu_timestamp.tv_sec &&
- time.tv_usec > nuidp->nu_timestamp.tv_usec))
- nuidp->nu_timestamp = time;
- else
- nuidp->nu_timestamp.tv_usec++;
- ktvin.tv_sec = txdr_unsigned(nuidp->nu_timestamp.tv_sec);
- ktvin.tv_usec = txdr_unsigned(nuidp->nu_timestamp.tv_usec);
+ TAILQ_REMOVE(&nfsrv_socklist, slp, ns_chain);
+ if (slp->ns_sotype == SOCK_STREAM)
+ nfsrv_sock_tcp_cnt--;
- /*
- * Now encrypt the timestamp verifier in ecb mode using the session
- * key.
- */
-#if NFSKERB
- XXX
-#endif
+ /* now remove from the write gather socket list */
+ if (slp->ns_wgq.tqe_next != SLPNOLIST) {
+ TAILQ_REMOVE(&nfsrv_sockwg, slp, ns_wgq);
+ slp->ns_wgq.tqe_next = SLPNOLIST;
+ }
+ nfsrv_slpfree(slp);
+}
- *verfp++ = ktvout.tv_sec;
- *verfp++ = ktvout.tv_usec;
- *verfp = 0;
- return (0);
+void
+nfsrv_slpderef(struct nfsrv_sock *slp)
+{
+ lck_mtx_lock(nfsd_mutex);
+ nfsrv_slpderef_locked(slp);
+ lck_mtx_unlock(nfsd_mutex);
}
/*
- * Save the current nickname in a hash list entry on the mount point.
+ * Check periodically for idle sockest if needed and
+ * zap them.
*/
-int
-nfs_savenickauth(nmp, cred, len, key, mdp, dposp, mrep)
- register struct nfsmount *nmp;
- struct ucred *cred;
- int len;
- NFSKERBKEY_T key;
- struct mbuf **mdp;
- char **dposp;
- struct mbuf *mrep;
+void
+nfsrv_idlesock_timer(__unused void *param0, __unused void *param1)
{
- register struct nfsuid *nuidp;
- register u_long *tl;
- register long t1;
- struct mbuf *md = *mdp;
- struct timeval ktvin, ktvout;
- u_long nick;
- char *dpos = *dposp, *cp2;
- int deltasec, error = 0;
-
- if (len == (3 * NFSX_UNSIGNED)) {
- nfsm_dissect(tl, u_long *, 3 * NFSX_UNSIGNED);
- ktvin.tv_sec = *tl++;
- ktvin.tv_usec = *tl++;
- nick = fxdr_unsigned(u_long, *tl);
+ struct nfsrv_sock *slp, *tslp;
+ struct timeval now;
+ time_t time_to_wait = nfsrv_sock_idle_timeout;
+
+ microuptime(&now);
+ lck_mtx_lock(nfsd_mutex);
+
+ /* Turn off the timer if we're suppose to and get out */
+ if (nfsrv_sock_idle_timeout < NFSD_MIN_IDLE_TIMEOUT)
+ nfsrv_sock_idle_timeout = 0;
+ if ((nfsrv_sock_tcp_cnt <= 2 * nfsd_thread_max) || (nfsrv_sock_idle_timeout == 0)) {
+ nfsrv_idlesock_timer_on = 0;
+ lck_mtx_unlock(nfsd_mutex);
+ return;
+ }
+ TAILQ_FOREACH_SAFE(slp, &nfsrv_socklist, ns_chain, tslp) {
+ lck_rw_lock_exclusive(&slp->ns_rwlock);
+ /* Skip udp and referenced sockets */
+ if (slp->ns_sotype == SOCK_DGRAM || slp->ns_sref) {
+ lck_rw_done(&slp->ns_rwlock);
+ continue;
+ }
/*
- * Decrypt the timestamp in ecb mode.
+ * If this is the first non-referenced socket that hasn't idle out,
+ * use its time stamp to calculate the earlist time in the future
+ * to start the next invocation of the timer. Since the nfsrv_socklist
+ * is sorted oldest access to newest. Once we find the first one,
+ * we're done and break out of the loop.
*/
-#if NFSKERB
- XXX
-#endif
- ktvout.tv_sec = fxdr_unsigned(long, ktvout.tv_sec);
- ktvout.tv_usec = fxdr_unsigned(long, ktvout.tv_usec);
- deltasec = time.tv_sec - ktvout.tv_sec;
- if (deltasec < 0)
- deltasec = -deltasec;
+ if (((slp->ns_timestamp + nfsrv_sock_idle_timeout) > now.tv_sec) ||
+ nfsrv_sock_tcp_cnt <= 2 * nfsd_thread_max) {
+ time_to_wait -= now.tv_sec - slp->ns_timestamp;
+ if (time_to_wait < 1)
+ time_to_wait = 1;
+ lck_rw_done(&slp->ns_rwlock);
+ break;
+ }
/*
- * If ok, add it to the hash list for the mount point.
+ * Bump the ref count. nfsrv_slpderef below will destroy
+ * the socket, since nfsrv_zapsock has closed it.
*/
- if (deltasec <= NFS_KERBCLOCKSKEW) {
- if (nmp->nm_numuids < nuidhash_max) {
- nmp->nm_numuids++;
- MALLOC_ZONE(nuidp, struct nfsuid *,
- sizeof (struct nfsuid),
- M_NFSUID, M_WAITOK);
- } else {
- nuidp = nmp->nm_uidlruhead.tqh_first;
- LIST_REMOVE(nuidp, nu_hash);
- TAILQ_REMOVE(&nmp->nm_uidlruhead, nuidp,
- nu_lru);
- }
- nuidp->nu_flag = 0;
- nuidp->nu_cr.cr_uid = cred->cr_uid;
- nuidp->nu_expire = time.tv_sec + NFS_KERBTTL;
- nuidp->nu_timestamp = ktvout;
- nuidp->nu_nickname = nick;
- bcopy(key, nuidp->nu_key, sizeof (key));
- TAILQ_INSERT_TAIL(&nmp->nm_uidlruhead, nuidp,
- nu_lru);
- LIST_INSERT_HEAD(NMUIDHASH(nmp, cred->cr_uid),
- nuidp, nu_hash);
- }
- } else
- nfsm_adv(nfsm_rndup(len));
-nfsmout:
- *mdp = md;
- *dposp = dpos;
- return (error);
-}
-
-#ifndef NFS_NOSERVER
-
-/*
- * Derefence a server socket structure. If it has no more references and
- * is no longer valid, you can throw it away.
- */
-void
-nfsrv_slpderef(slp)
- register struct nfssvc_sock *slp;
-{
- if (--(slp->ns_sref) == 0 && (slp->ns_flag & SLP_VALID) == 0) {
- TAILQ_REMOVE(&nfssvc_sockhead, slp, ns_chain);
- _FREE((caddr_t)slp, M_NFSSVC);
+ slp->ns_sref++;
+ nfsrv_zapsock(slp);
+ lck_rw_done(&slp->ns_rwlock);
+ nfsrv_slpderef_locked(slp);
}
+
+ /* Start ourself back up */
+ nfs_interval_timer_start(nfsrv_idlesock_timer_call, time_to_wait * 1000);
+ /* Remember when the next timer will fire for nfssvc_addsock. */
+ nfsrv_idlesock_timer_on = now.tv_sec + time_to_wait;
+ lck_mtx_unlock(nfsd_mutex);
}
/*
- * Initialize the data structures for the server.
- * Handshake with any new nfsds starting up to avoid any chance of
- * corruption.
+ * Clean up the data structures for the server.
*/
void
-nfsrv_init(terminating)
- int terminating;
+nfsrv_cleanup(void)
{
- register struct nfssvc_sock *slp, *nslp;
-
- if (nfssvc_sockhead_flag & SLP_INIT)
- panic("nfsd init");
- nfssvc_sockhead_flag |= SLP_INIT;
- if (terminating) {
- for (slp = nfssvc_sockhead.tqh_first; slp != 0; slp = nslp) {
- nslp = slp->ns_chain.tqe_next;
- if (slp->ns_flag & SLP_VALID)
- nfsrv_zapsock(slp);
- TAILQ_REMOVE(&nfssvc_sockhead, slp, ns_chain);
- _FREE((caddr_t)slp, M_NFSSVC);
- }
- nfsrv_cleancache(); /* And clear out server cache */
-/* XXX CSM 12/4/97 Revisit when enabling WebNFS */
-#ifdef notyet
- } else
- nfs_pub.np_valid = 0;
-#else
- }
+ struct nfsrv_sock *slp, *nslp;
+ struct timeval now;
+#if CONFIG_FSE
+ struct nfsrv_fmod *fp, *nfp;
+ int i;
#endif
- TAILQ_INIT(&nfssvc_sockhead);
- nfssvc_sockhead_flag &= ~SLP_INIT;
- if (nfssvc_sockhead_flag & SLP_WANTINIT) {
- nfssvc_sockhead_flag &= ~SLP_WANTINIT;
- wakeup((caddr_t)&nfssvc_sockhead);
+ microuptime(&now);
+ for (slp = TAILQ_FIRST(&nfsrv_socklist); slp != 0; slp = nslp) {
+ nslp = TAILQ_NEXT(slp, ns_chain);
+ lck_rw_lock_exclusive(&slp->ns_rwlock);
+ slp->ns_sref++;
+ if (slp->ns_flag & SLP_VALID)
+ nfsrv_zapsock(slp);
+ lck_rw_done(&slp->ns_rwlock);
+ nfsrv_slpderef_locked(slp);
}
+#
+#if CONFIG_FSE
+ /*
+ * Flush pending file write fsevents
+ */
+ lck_mtx_lock(nfsrv_fmod_mutex);
+ for (i = 0; i < NFSRVFMODHASHSZ; i++) {
+ for (fp = LIST_FIRST(&nfsrv_fmod_hashtbl[i]); fp; fp = nfp) {
+ /*
+ * Fire off the content modified fsevent for each
+ * entry, remove it from the list, and free it.
+ */
+ 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);
+ nfp = LIST_NEXT(fp, fm_link);
+ LIST_REMOVE(fp, fm_link);
+ FREE(fp, M_TEMP);
+ }
+ }
+ nfsrv_fmod_pending = 0;
+ lck_mtx_unlock(nfsrv_fmod_mutex);
+#endif
- TAILQ_INIT(&nfsd_head);
- nfsd_head_flag &= ~NFSD_CHECKSLP;
+ nfsrv_uc_cleanup(); /* Stop nfs socket up-call threads */
+
+ nfs_gss_svc_cleanup(); /* Remove any RPCSEC_GSS contexts */
- MALLOC(nfs_udpsock, struct nfssvc_sock *, sizeof(struct nfssvc_sock),
- M_NFSSVC, M_WAITOK);
- bzero((caddr_t)nfs_udpsock, sizeof (struct nfssvc_sock));
- TAILQ_INIT(&nfs_udpsock->ns_uidlruhead);
- TAILQ_INSERT_HEAD(&nfssvc_sockhead, nfs_udpsock, ns_chain);
+ nfsrv_cleancache(); /* And clear out server cache */
- MALLOC(nfs_cltpsock, struct nfssvc_sock *, sizeof(struct nfssvc_sock),
- M_NFSSVC, M_WAITOK);
- bzero((caddr_t)nfs_cltpsock, sizeof (struct nfssvc_sock));
- TAILQ_INIT(&nfs_cltpsock->ns_uidlruhead);
- TAILQ_INSERT_TAIL(&nfssvc_sockhead, nfs_cltpsock, ns_chain);
+ nfsrv_udpsock = NULL;
+ nfsrv_udp6sock = NULL;
}
-/*
- * Add entries to the server monitor log.
- */
-static void
-nfsd_rt(sotype, nd, cacherep)
- int sotype;
- register struct nfsrv_descript *nd;
- int cacherep;
-{
- register struct drt *rt;
-
- rt = &nfsdrt.drt[nfsdrt.pos];
- if (cacherep == RC_DOIT)
- rt->flag = 0;
- else if (cacherep == RC_REPLY)
- rt->flag = DRT_CACHEREPLY;
- else
- rt->flag = DRT_CACHEDROP;
- if (sotype == SOCK_STREAM)
- rt->flag |= DRT_TCP;
- if (nd->nd_flag & ND_NQNFS)
- rt->flag |= DRT_NQNFS;
- else if (nd->nd_flag & ND_NFSV3)
- rt->flag |= DRT_NFSV3;
- rt->proc = nd->nd_procnum;
- if (mtod(nd->nd_nam, struct sockaddr *)->sa_family == AF_INET)
- rt->ipadr = mtod(nd->nd_nam, struct sockaddr_in *)->sin_addr.s_addr;
- else
- rt->ipadr = INADDR_ANY;
- rt->resptime = ((time.tv_sec - nd->nd_starttime.tv_sec) * 1000000) +
- (time.tv_usec - nd->nd_starttime.tv_usec);
- rt->tstamp = time;
- nfsdrt.pos = (nfsdrt.pos + 1) % NFSRTTLOGSIZ;
-}
#endif /* NFS_NOSERVER */
projects / apple / xnu.git / blobdiff