/*
- * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2015 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) 1982, 1986, 1989, 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* sendfile(2) and related extensions:
- * Copyright (c) 1998, David Greenman. All rights reserved.
+ * Copyright (c) 1998, David Greenman. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
*
* @(#)uipc_syscalls.c 8.4 (Berkeley) 2/21/94
*/
-
-
+/*
+ * 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>
#include <sys/filedesc.h>
#include <sys/proc_internal.h>
#include <sys/file_internal.h>
+#include <sys/vnode_internal.h>
#include <sys/malloc.h>
+#include <sys/mcache.h>
#include <sys/mbuf.h>
-#include <kern/lock.h>
+#include <kern/locks.h>
#include <sys/domain.h>
#include <sys/protosw.h>
#include <sys/signalvar.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
-#if KTRACE
-#include <sys/ktrace.h>
-#endif
#include <sys/kernel.h>
#include <sys/uio_internal.h>
+#include <sys/kauth.h>
+#include <kern/task.h>
+#include <sys/priv.h>
+#include <sys/sysctl.h>
-#include <bsm/audit_kernel.h>
+#include <security/audit/audit.h>
#include <sys/kdebug.h>
#include <sys/sysproto.h>
-
-#define f_flag f_fglob->fg_flag
-#define f_type f_fglob->fg_type
-#define f_msgcount f_fglob->fg_msgcount
-#define f_cred f_fglob->fg_cred
-#define f_ops f_fglob->fg_ops
-#define f_offset f_fglob->fg_offset
-#define f_data f_fglob->fg_data
-#if KDEBUG
-
-#define DBG_LAYER_IN_BEG NETDBG_CODE(DBG_NETSOCK, 0)
-#define DBG_LAYER_IN_END NETDBG_CODE(DBG_NETSOCK, 2)
-#define DBG_LAYER_OUT_BEG NETDBG_CODE(DBG_NETSOCK, 1)
-#define DBG_LAYER_OUT_END NETDBG_CODE(DBG_NETSOCK, 3)
-#define DBG_FNC_SENDMSG NETDBG_CODE(DBG_NETSOCK, (1 << 8) | 1)
-#define DBG_FNC_SENDTO NETDBG_CODE(DBG_NETSOCK, (2 << 8) | 1)
-#define DBG_FNC_SENDIT NETDBG_CODE(DBG_NETSOCK, (3 << 8) | 1)
-#define DBG_FNC_RECVFROM NETDBG_CODE(DBG_NETSOCK, (5 << 8))
-#define DBG_FNC_RECVMSG NETDBG_CODE(DBG_NETSOCK, (6 << 8))
-#define DBG_FNC_RECVIT NETDBG_CODE(DBG_NETSOCK, (7 << 8))
-
+#include <netinet/in.h>
+#include <net/route.h>
+#include <netinet/in_pcb.h>
+
+#if CONFIG_MACF_SOCKET_SUBSET
+#include <security/mac_framework.h>
+#endif /* MAC_SOCKET_SUBSET */
+
+#define f_flag f_fglob->fg_flag
+#define f_type f_fglob->fg_ops->fo_type
+#define f_msgcount f_fglob->fg_msgcount
+#define f_cred f_fglob->fg_cred
+#define f_ops f_fglob->fg_ops
+#define f_offset f_fglob->fg_offset
+#define f_data f_fglob->fg_data
+
+#define DBG_LAYER_IN_BEG NETDBG_CODE(DBG_NETSOCK, 0)
+#define DBG_LAYER_IN_END NETDBG_CODE(DBG_NETSOCK, 2)
+#define DBG_LAYER_OUT_BEG NETDBG_CODE(DBG_NETSOCK, 1)
+#define DBG_LAYER_OUT_END NETDBG_CODE(DBG_NETSOCK, 3)
+#define DBG_FNC_SENDMSG NETDBG_CODE(DBG_NETSOCK, (1 << 8) | 1)
+#define DBG_FNC_SENDTO NETDBG_CODE(DBG_NETSOCK, (2 << 8) | 1)
+#define DBG_FNC_SENDIT NETDBG_CODE(DBG_NETSOCK, (3 << 8) | 1)
+#define DBG_FNC_RECVFROM NETDBG_CODE(DBG_NETSOCK, (5 << 8))
+#define DBG_FNC_RECVMSG NETDBG_CODE(DBG_NETSOCK, (6 << 8))
+#define DBG_FNC_RECVIT NETDBG_CODE(DBG_NETSOCK, (7 << 8))
+#define DBG_FNC_SENDFILE NETDBG_CODE(DBG_NETSOCK, (10 << 8))
+#define DBG_FNC_SENDFILE_WAIT NETDBG_CODE(DBG_NETSOCK, ((10 << 8) | 1))
+#define DBG_FNC_SENDFILE_READ NETDBG_CODE(DBG_NETSOCK, ((10 << 8) | 2))
+#define DBG_FNC_SENDFILE_SEND NETDBG_CODE(DBG_NETSOCK, ((10 << 8) | 3))
+#define DBG_FNC_SENDMSG_X NETDBG_CODE(DBG_NETSOCK, (11 << 8))
+#define DBG_FNC_RECVMSG_X NETDBG_CODE(DBG_NETSOCK, (12 << 8))
+
+#if DEBUG || DEVELOPMENT
+#define DEBUG_KERNEL_ADDRPERM(_v) (_v)
+#define DBG_PRINTF(...) printf(__VA_ARGS__)
+#else
+#define DEBUG_KERNEL_ADDRPERM(_v) VM_KERNEL_ADDRPERM(_v)
+#define DBG_PRINTF(...) do { } while (0)
#endif
-
-#define HACK_FOR_4056224 1
-#if HACK_FOR_4056224
-static pid_t last_pid_4056224 = 0;
-#endif /* HACK_FOR_4056224 */
-
-
+/* TODO: should be in header file */
+int falloc_locked(proc_t, struct fileproc **, int *, vfs_context_t, int);
+
+static int sendit(struct proc *, struct socket *, struct user_msghdr *, uio_t,
+ int, int32_t *);
+static int recvit(struct proc *, int, struct user_msghdr *, uio_t, user_addr_t,
+ int32_t *);
+static int connectit(struct socket *, struct sockaddr *);
+static int getsockaddr(struct socket *, struct sockaddr **, user_addr_t,
+ size_t, boolean_t);
+static int getsockaddr_s(struct socket *, struct sockaddr_storage *,
+ user_addr_t, size_t, boolean_t);
#if SENDFILE
-static void sf_buf_init(void *arg);
-SYSINIT(sock_sf, SI_SUB_MBUF, SI_ORDER_ANY, sf_buf_init, NULL)
-static struct sf_buf *sf_buf_alloc(void);
-static void sf_buf_ref(caddr_t addr, u_int size);
-static void sf_buf_free(caddr_t addr, u_int size);
-
-static SLIST_HEAD(, sf_buf) sf_freelist;
-static vm_offset_t sf_base;
-static struct sf_buf *sf_bufs;
-static int sf_buf_alloc_want;
-#endif
-
-static int sendit(struct proc *p, int s, struct user_msghdr *mp, uio_t uiop,
- int flags, register_t *retval);
-static int recvit(struct proc *p, int s, struct user_msghdr *mp, uio_t uiop,
- user_addr_t namelenp, register_t *retval);
-
-static int accept1(struct proc *p, struct accept_args *uap, register_t *retval, int compat);
-static int getsockname1(struct proc *p, struct getsockname_args *uap,
- register_t *retval, int compat);
-static int getpeername1(struct proc *p, struct getpeername_args *uap,
- register_t *retval, int compat);
-
-
-#if COMPAT_43_SOCKET
-struct orecvmsg_args {
- int s;
- struct omsghdr *msg;
- int flags;
-};
-struct osendmsg_args {
- int s;
- caddr_t msg;
- int flags;
-};
-struct osend_args {
- int s;
- caddr_t buf;
- int len;
- int flags;
-};
-struct orecv_args {
- int s;
- caddr_t buf;
- int len;
- int flags;
-};
-
-int oaccept(struct proc *p, struct accept_args *uap, register_t *retval);
-int ogetpeername(struct proc *p, struct getpeername_args *uap, register_t *retval);
-int ogetsockname(struct proc *p, struct getsockname_args *uap, register_t *retval);
-int orecv(struct proc *p, struct orecv_args *uap, register_t *retval);
-int orecvfrom(struct proc *p, struct recvfrom_args *uap, register_t *retval);
-int orecvmsg(struct proc *p, struct orecvmsg_args *uap, register_t *retval);
-int osend(struct proc *p, struct osend_args *uap, register_t *retval);
-int osendmsg(struct proc *p, struct osendmsg_args *uap, register_t *retval);
-#endif // COMPAT_43_SOCKET
+static void alloc_sendpkt(int, size_t, unsigned int *, struct mbuf **,
+ boolean_t);
+#endif /* SENDFILE */
+static int connectx_nocancel(struct proc *, struct connectx_args *, int *);
+static int connectitx(struct socket *, struct sockaddr *,
+ struct sockaddr *, struct proc *, uint32_t, sae_associd_t,
+ sae_connid_t *, uio_t, unsigned int, user_ssize_t *);
+static int peeloff_nocancel(struct proc *, struct peeloff_args *, int *);
+static int disconnectx_nocancel(struct proc *, struct disconnectx_args *,
+ int *);
+static int socket_common(struct proc *, int, int, int, pid_t, int32_t *, int);
+
+static int internalize_user_msghdr_array(const void *, int, int, u_int,
+ struct user_msghdr_x *, struct uio **);
+static u_int externalize_user_msghdr_array(void *, int, int, u_int,
+ const struct user_msghdr_x *, struct uio **);
+
+static void free_uio_array(struct uio **, u_int);
+static int uio_array_is_valid(struct uio **, u_int);
+static int recv_msg_array_is_valid(struct recv_msg_elem *, u_int);
+static int internalize_recv_msghdr_array(const void *, int, int,
+ u_int, struct user_msghdr_x *, struct recv_msg_elem *);
+static u_int externalize_recv_msghdr_array(void *, int, int, u_int,
+ const struct user_msghdr_x *, struct recv_msg_elem *);
+static struct recv_msg_elem *alloc_recv_msg_array(u_int count);
+static void free_recv_msg_array(struct recv_msg_elem *, u_int);
+
+SYSCTL_DECL(_kern_ipc);
+
+static u_int somaxsendmsgx = 100;
+SYSCTL_UINT(_kern_ipc, OID_AUTO, maxsendmsgx,
+ CTLFLAG_RW | CTLFLAG_LOCKED, &somaxsendmsgx, 0, "");
+static u_int somaxrecvmsgx = 100;
+SYSCTL_UINT(_kern_ipc, OID_AUTO, maxrecvmsgx,
+ CTLFLAG_RW | CTLFLAG_LOCKED, &somaxrecvmsgx, 0, "");
/*
* System call interface to the socket abstraction.
*/
-extern struct fileops socketops;
+extern const struct fileops socketops;
+
+/*
+ * Returns: 0 Success
+ * EACCES Mandatory Access Control failure
+ * falloc:ENFILE
+ * falloc:EMFILE
+ * falloc:ENOMEM
+ * socreate:EAFNOSUPPORT
+ * socreate:EPROTOTYPE
+ * socreate:EPROTONOSUPPORT
+ * socreate:ENOBUFS
+ * socreate:ENOMEM
+ * socreate:??? [other protocol families, IPSEC]
+ */
+int
+socket(struct proc *p,
+ struct socket_args *uap,
+ int32_t *retval)
+{
+ return (socket_common(p, uap->domain, uap->type, uap->protocol,
+ proc_selfpid(), retval, 0));
+}
int
-socket(p, uap, retval)
- struct proc *p;
- register struct socket_args *uap;
- register_t *retval;
+socket_delegate(struct proc *p,
+ struct socket_delegate_args *uap,
+ int32_t *retval)
+{
+ return socket_common(p, uap->domain, uap->type, uap->protocol,
+ uap->epid, retval, 1);
+}
+
+static int
+socket_common(struct proc *p,
+ int domain,
+ int type,
+ int protocol,
+ pid_t epid,
+ int32_t *retval,
+ int delegate)
{
struct socket *so;
struct fileproc *fp;
int fd, error;
- AUDIT_ARG(socket, uap->domain, uap->type, uap->protocol);
+ AUDIT_ARG(socket, domain, type, protocol);
+#if CONFIG_MACF_SOCKET_SUBSET
+ if ((error = mac_socket_check_create(kauth_cred_get(), domain,
+ type, protocol)) != 0)
+ return (error);
+#endif /* MAC_SOCKET_SUBSET */
+
+ if (delegate) {
+ error = priv_check_cred(kauth_cred_get(),
+ PRIV_NET_PRIVILEGED_SOCKET_DELEGATE, 0);
+ if (error)
+ return (EACCES);
+ }
- error = falloc(p, &fp, &fd);
+ error = falloc(p, &fp, &fd, vfs_context_current());
if (error) {
return (error);
}
fp->f_flag = FREAD|FWRITE;
- fp->f_type = DTYPE_SOCKET;
fp->f_ops = &socketops;
- error = socreate(uap->domain, &so, uap->type, uap->protocol);
+ if (delegate)
+ error = socreate_delegate(domain, &so, type, protocol, epid);
+ else
+ error = socreate(domain, &so, type, protocol);
+
if (error) {
fp_free(p, fd, fp);
} else {
fp->f_data = (caddr_t)so;
proc_fdlock(p);
- *fdflags(p, fd) &= ~UF_RESERVED;
-
+ procfdtbl_releasefd(p, fd, NULL);
+
fp_drop(p, fd, fp, 1);
proc_fdunlock(p);
*retval = fd;
+ if (ENTR_SHOULDTRACE) {
+ KERNEL_ENERGYTRACE(kEnTrActKernSocket, DBG_FUNC_START,
+ fd, 0, (int64_t)VM_KERNEL_ADDRPERM(so));
+ }
}
return (error);
}
+/*
+ * Returns: 0 Success
+ * EDESTADDRREQ Destination address required
+ * EBADF Bad file descriptor
+ * EACCES Mandatory Access Control failure
+ * file_socket:ENOTSOCK
+ * file_socket:EBADF
+ * getsockaddr:ENAMETOOLONG Filename too long
+ * getsockaddr:EINVAL Invalid argument
+ * getsockaddr:ENOMEM Not enough space
+ * getsockaddr:EFAULT Bad address
+ * sobindlock:???
+ */
/* ARGSUSED */
int
-bind(struct proc *p, struct bind_args *uap, __unused register_t *retval)
+bind(__unused proc_t p, struct bind_args *uap, __unused int32_t *retval)
{
- struct sockaddr *sa;
+ struct sockaddr_storage ss;
+ struct sockaddr *sa = NULL;
struct socket *so;
+ boolean_t want_free = TRUE;
int error;
AUDIT_ARG(fd, uap->s);
error = file_socket(uap->s, &so);
- if (error)
+ if (error != 0)
return (error);
- error = getsockaddr(&sa, uap->name, uap->namelen);
- if (error)
- goto out;
- AUDIT_ARG(sockaddr, p, sa);
- if (so != NULL)
- error = sobind(so, sa);
- else
+ if (so == NULL) {
error = EBADF;
- FREE(sa, M_SONAME);
+ goto out;
+ }
+ if (uap->name == USER_ADDR_NULL) {
+ error = EDESTADDRREQ;
+ goto out;
+ }
+ if (uap->namelen > sizeof (ss)) {
+ error = getsockaddr(so, &sa, uap->name, uap->namelen, TRUE);
+ } else {
+ error = getsockaddr_s(so, &ss, uap->name, uap->namelen, TRUE);
+ if (error == 0) {
+ sa = (struct sockaddr *)&ss;
+ want_free = FALSE;
+ }
+ }
+ if (error != 0)
+ goto out;
+ AUDIT_ARG(sockaddr, vfs_context_cwd(vfs_context_current()), sa);
+#if CONFIG_MACF_SOCKET_SUBSET
+ if ((error = mac_socket_check_bind(kauth_cred_get(), so, sa)) == 0)
+ error = sobindlock(so, sa, 1); /* will lock socket */
+#else
+ error = sobindlock(so, sa, 1); /* will lock socket */
+#endif /* MAC_SOCKET_SUBSET */
+ if (want_free)
+ FREE(sa, M_SONAME);
out:
file_drop(uap->s);
return (error);
}
-
+/*
+ * Returns: 0 Success
+ * EBADF
+ * EACCES Mandatory Access Control failure
+ * file_socket:ENOTSOCK
+ * file_socket:EBADF
+ * solisten:EINVAL
+ * solisten:EOPNOTSUPP
+ * solisten:???
+ */
int
-listen(__unused struct proc *p, register struct listen_args *uap,
- __unused register_t *retval)
+listen(__unused struct proc *p, struct listen_args *uap,
+ __unused int32_t *retval)
{
int error;
- struct socket * so;
+ struct socket *so;
AUDIT_ARG(fd, uap->s);
error = file_socket(uap->s, &so);
if (error)
return (error);
if (so != NULL)
+#if CONFIG_MACF_SOCKET_SUBSET
+ {
+ error = mac_socket_check_listen(kauth_cred_get(), so);
+ if (error == 0)
+ error = solisten(so, uap->backlog);
+ }
+#else
error = solisten(so, uap->backlog);
+#endif /* MAC_SOCKET_SUBSET */
else
error = EBADF;
+
file_drop(uap->s);
return (error);
}
-#if !COMPAT_43_SOCKET
-#define accept1 accept
-#endif
-
-
-
+/*
+ * Returns: fp_getfsock:EBADF Bad file descriptor
+ * fp_getfsock:EOPNOTSUPP ...
+ * xlate => :ENOTSOCK Socket operation on non-socket
+ * :EFAULT Bad address on copyin/copyout
+ * :EBADF Bad file descriptor
+ * :EOPNOTSUPP Operation not supported on socket
+ * :EINVAL Invalid argument
+ * :EWOULDBLOCK Operation would block
+ * :ECONNABORTED Connection aborted
+ * :EINTR Interrupted function
+ * :EACCES Mandatory Access Control failure
+ * falloc_locked:ENFILE Too many files open in system
+ * falloc_locked::EMFILE Too many open files
+ * falloc_locked::ENOMEM Not enough space
+ * 0 Success
+ */
int
-accept1(struct proc *p, struct accept_args *uap, register_t *retval, int compat)
+accept_nocancel(struct proc *p, struct accept_nocancel_args *uap,
+ int32_t *retval)
{
struct fileproc *fp;
- struct sockaddr *sa;
+ struct sockaddr *sa = NULL;
socklen_t namelen;
int error;
struct socket *head, *so = NULL;
lck_mtx_t *mutex_held;
int fd = uap->s;
- int newfd;;
+ int newfd;
short fflag; /* type must match fp->f_flag */
int dosocklock = 0;
+ *retval = -1;
+
AUDIT_ARG(fd, uap->s);
+
if (uap->name) {
error = copyin(uap->anamelen, (caddr_t)&namelen,
- sizeof(socklen_t));
- if(error)
+ sizeof (socklen_t));
+ if (error)
return (error);
}
error = fp_getfsock(p, fd, &fp, &head);
error = EBADF;
goto out;
}
+#if CONFIG_MACF_SOCKET_SUBSET
+ if ((error = mac_socket_check_accept(kauth_cred_get(), head)) != 0)
+ goto out;
+#endif /* MAC_SOCKET_SUBSET */
socket_lock(head, 1);
if (head->so_proto->pr_getlock != NULL) {
mutex_held = (*head->so_proto->pr_getlock)(head, 0);
dosocklock = 1;
- }
- else {
+ } else {
mutex_held = head->so_proto->pr_domain->dom_mtx;
dosocklock = 0;
}
-
if ((head->so_options & SO_ACCEPTCONN) == 0) {
+ if ((head->so_proto->pr_flags & PR_CONNREQUIRED) == 0) {
+ error = EOPNOTSUPP;
+ } else {
+ /* POSIX: The socket is not accepting connections */
+ error = EINVAL;
+ }
socket_unlock(head, 1);
- error = EINVAL;
goto out;
}
+check_again:
if ((head->so_state & SS_NBIO) && head->so_comp.tqh_first == NULL) {
socket_unlock(head, 1);
error = EWOULDBLOCK;
goto out;
}
- while (TAILQ_EMPTY(&head->so_comp) && head->so_error == 0) {
+ while (TAILQ_EMPTY(&head->so_comp) && head->so_error == 0) {
if (head->so_state & SS_CANTRCVMORE) {
head->so_error = ECONNABORTED;
break;
}
if (head->so_usecount < 1)
- panic("accept1: head=%x refcount=%d\n", head, head->so_usecount);
- error = msleep((caddr_t)&head->so_timeo, mutex_held, PSOCK | PCATCH,
- "accept", 0);
+ panic("accept: head=%p refcount=%d\n", head,
+ head->so_usecount);
+ error = msleep((caddr_t)&head->so_timeo, mutex_held,
+ PSOCK | PCATCH, "accept", 0);
if (head->so_usecount < 1)
- panic("accept1: 2 head=%x refcount=%d\n", head, head->so_usecount);
+ panic("accept: 2 head=%p refcount=%d\n", head,
+ head->so_usecount);
if ((head->so_state & SS_DRAINING)) {
error = ECONNABORTED;
}
goto out;
}
-
/*
* At this point we know that there is at least one connection
* ready to be accepted. Remove it from the queue prior to
* instead.
*/
lck_mtx_assert(mutex_held, LCK_MTX_ASSERT_OWNED);
+
+ so_acquire_accept_list(head, NULL);
+ if (TAILQ_EMPTY(&head->so_comp)) {
+ so_release_accept_list(head);
+ goto check_again;
+ }
+
so = TAILQ_FIRST(&head->so_comp);
TAILQ_REMOVE(&head->so_comp, so, so_list);
+ so->so_head = NULL;
+ so->so_state &= ~SS_COMP;
head->so_qlen--;
- socket_unlock(head, 0); /* unlock head to avoid deadlock with select, keep a ref on head */
+ so_release_accept_list(head);
+
+ /* unlock head to avoid deadlock with select, keep a ref on head */
+ socket_unlock(head, 0);
+
+#if CONFIG_MACF_SOCKET_SUBSET
+ /*
+ * Pass the pre-accepted socket to the MAC framework. This is
+ * cheaper than allocating a file descriptor for the socket,
+ * calling the protocol accept callback, and possibly freeing
+ * the file descriptor should the MAC check fails.
+ */
+ if ((error = mac_socket_check_accepted(kauth_cred_get(), so)) != 0) {
+ socket_lock(so, 1);
+ so->so_state &= ~SS_NOFDREF;
+ socket_unlock(so, 1);
+ soclose(so);
+ /* Drop reference on listening socket */
+ sodereference(head);
+ goto out;
+ }
+#endif /* MAC_SOCKET_SUBSET */
+
+ /*
+ * Pass the pre-accepted socket to any interested socket filter(s).
+ * Upon failure, the socket would have been closed by the callee.
+ */
+ if (so->so_filt != NULL && (error = soacceptfilter(so, head)) != 0) {
+ /* Drop reference on listening socket */
+ sodereference(head);
+ /* Propagate socket filter's error code to the caller */
+ goto out;
+ }
+
fflag = fp->f_flag;
- proc_fdlock(p);
- error = falloc_locked(p, &fp, &newfd, 1);
+ error = falloc(p, &fp, &newfd, vfs_context_current());
if (error) {
/*
- * Probably ran out of file descriptors. Put the
- * unaccepted connection back onto the queue and
- * do another wakeup so some other process might
- * have a chance at it.
+ * Probably ran out of file descriptors.
+ *
+ * <rdar://problem/8554930>
+ * Don't put this back on the socket like we used to, that
+ * just causes the client to spin. Drop the socket.
*/
- proc_fdunlock(p);
- socket_lock(head, 0);
- TAILQ_INSERT_HEAD(&head->so_comp, so, so_list);
- head->so_qlen++;
- wakeup_one((caddr_t)&head->so_timeo);
- socket_unlock(head, 1);
+ socket_lock(so, 1);
+ so->so_state &= ~SS_NOFDREF;
+ socket_unlock(so, 1);
+ soclose(so);
+ sodereference(head);
goto out;
- }
- *fdflags(p, newfd) &= ~UF_RESERVED;
+ }
*retval = newfd;
- fp->f_type = DTYPE_SOCKET;
fp->f_flag = fflag;
fp->f_ops = &socketops;
fp->f_data = (caddr_t)so;
- fp_drop(p, newfd, fp, 1);
- proc_fdunlock(p);
+
socket_lock(head, 0);
if (dosocklock)
socket_lock(so, 1);
- so->so_state &= ~SS_COMP;
- so->so_head = NULL;
- sa = 0;
+
+ /* Sync socket non-blocking/async state with file flags */
+ if (fp->f_flag & FNONBLOCK) {
+ so->so_state |= SS_NBIO;
+ } else {
+ so->so_state &= ~SS_NBIO;
+ }
+
+ if (fp->f_flag & FASYNC) {
+ so->so_state |= SS_ASYNC;
+ so->so_rcv.sb_flags |= SB_ASYNC;
+ so->so_snd.sb_flags |= SB_ASYNC;
+ } else {
+ so->so_state &= ~SS_ASYNC;
+ so->so_rcv.sb_flags &= ~SB_ASYNC;
+ so->so_snd.sb_flags &= ~SB_ASYNC;
+ }
+
(void) soacceptlock(so, &sa, 0);
socket_unlock(head, 1);
- if (sa == 0) {
+ if (sa == NULL) {
namelen = 0;
if (uap->name)
goto gotnoname;
- if (dosocklock)
- socket_unlock(so, 1);
error = 0;
- goto out;
+ goto releasefd;
}
- AUDIT_ARG(sockaddr, p, sa);
+ AUDIT_ARG(sockaddr, vfs_context_cwd(vfs_context_current()), sa);
+
if (uap->name) {
- /* check sa_len before it is destroyed */
- if (namelen > sa->sa_len)
- namelen = sa->sa_len;
-#if COMPAT_43_SOCKET
- if (compat)
- ((struct osockaddr *)sa)->sa_family =
- sa->sa_family;
-#endif
+ socklen_t sa_len;
+
+ /* save sa_len before it is destroyed */
+ sa_len = sa->sa_len;
+ namelen = MIN(namelen, sa_len);
error = copyout(sa, uap->name, namelen);
if (!error)
+ /* return the actual, untruncated address length */
+ namelen = sa_len;
gotnoname:
- error = copyout((caddr_t)&namelen, uap->anamelen,
- sizeof(socklen_t));
+ error = copyout((caddr_t)&namelen, uap->anamelen,
+ sizeof (socklen_t));
}
FREE(sa, M_SONAME);
+
+releasefd:
+ /*
+ * If the socket has been marked as inactive by sosetdefunct(),
+ * disallow further operations on it.
+ */
+ if (so->so_flags & SOF_DEFUNCT) {
+ sodefunct(current_proc(), so,
+ SHUTDOWN_SOCKET_LEVEL_DISCONNECT_INTERNAL);
+ }
+
if (dosocklock)
socket_unlock(so, 1);
+
+ proc_fdlock(p);
+ procfdtbl_releasefd(p, newfd, NULL);
+ fp_drop(p, newfd, fp, 1);
+ proc_fdunlock(p);
+
out:
file_drop(fd);
+
+ if (error == 0 && ENTR_SHOULDTRACE) {
+ KERNEL_ENERGYTRACE(kEnTrActKernSocket, DBG_FUNC_START,
+ newfd, 0, (int64_t)VM_KERNEL_ADDRPERM(so));
+ }
return (error);
}
int
-accept(struct proc *p, struct accept_args *uap, register_t *retval)
+accept(struct proc *p, struct accept_args *uap, int32_t *retval)
{
-
- return (accept1(p, uap, retval, 0));
+ __pthread_testcancel(1);
+ return (accept_nocancel(p, (struct accept_nocancel_args *)uap,
+ retval));
}
-#if COMPAT_43_SOCKET
+/*
+ * Returns: 0 Success
+ * EBADF Bad file descriptor
+ * EALREADY Connection already in progress
+ * EINPROGRESS Operation in progress
+ * ECONNABORTED Connection aborted
+ * EINTR Interrupted function
+ * EACCES Mandatory Access Control failure
+ * file_socket:ENOTSOCK
+ * file_socket:EBADF
+ * getsockaddr:ENAMETOOLONG Filename too long
+ * getsockaddr:EINVAL Invalid argument
+ * getsockaddr:ENOMEM Not enough space
+ * getsockaddr:EFAULT Bad address
+ * soconnectlock:EOPNOTSUPP
+ * soconnectlock:EISCONN
+ * soconnectlock:??? [depends on protocol, filters]
+ * msleep:EINTR
+ *
+ * Imputed: so_error error may be set from so_error, which
+ * may have been set by soconnectlock.
+ */
+/* ARGSUSED */
int
-oaccept(struct proc *p, struct accept_args *uap, register_t *retval)
+connect(struct proc *p, struct connect_args *uap, int32_t *retval)
{
-
- return (accept1(p, uap, retval, 1));
+ __pthread_testcancel(1);
+ return (connect_nocancel(p, (struct connect_nocancel_args *)uap,
+ retval));
}
-#endif /* COMPAT_43_SOCKET */
-/* ARGSUSED */
int
-connect(struct proc *p, struct connect_args *uap, __unused register_t *retval)
+connect_nocancel(proc_t p, struct connect_nocancel_args *uap, int32_t *retval)
{
+#pragma unused(p, retval)
struct socket *so;
- struct sockaddr *sa;
- lck_mtx_t *mutex_held;
+ struct sockaddr_storage ss;
+ struct sockaddr *sa = NULL;
int error;
int fd = uap->s;
+ boolean_t dgram;
AUDIT_ARG(fd, uap->s);
- error = file_socket( fd, &so);
- if (error)
+ error = file_socket(fd, &so);
+ if (error != 0)
return (error);
if (so == NULL) {
error = EBADF;
goto out;
}
- socket_lock(so, 1);
+ /*
+ * Ask getsockaddr{_s} to not translate AF_UNSPEC to AF_INET
+ * if this is a datagram socket; translate for other types.
+ */
+ dgram = (so->so_type == SOCK_DGRAM);
- if ((so->so_state & SS_NBIO) && (so->so_state & SS_ISCONNECTING)) {
- socket_unlock(so, 1);
- error = EALREADY;
- goto out;
+ /* Get socket address now before we obtain socket lock */
+ if (uap->namelen > sizeof (ss)) {
+ error = getsockaddr(so, &sa, uap->name, uap->namelen, !dgram);
+ } else {
+ error = getsockaddr_s(so, &ss, uap->name, uap->namelen, !dgram);
+ if (error == 0)
+ sa = (struct sockaddr *)&ss;
}
- error = getsockaddr(&sa, uap->name, uap->namelen);
- if (error) {
- socket_unlock(so, 1);
+ if (error != 0)
goto out;
- }
- AUDIT_ARG(sockaddr, p, sa);
- error = soconnectlock(so, sa, 0);
- if (error)
- goto bad;
- if ((so->so_state & SS_NBIO) && (so->so_state & SS_ISCONNECTING)) {
+
+ error = connectit(so, sa);
+
+ if (sa != NULL && sa != SA(&ss))
FREE(sa, M_SONAME);
- socket_unlock(so, 1);
- error = EINPROGRESS;
- goto out;
- }
- while ((so->so_state & SS_ISCONNECTING) && so->so_error == 0) {
- if (so->so_proto->pr_getlock != NULL)
- mutex_held = (*so->so_proto->pr_getlock)(so, 0);
- else
- mutex_held = so->so_proto->pr_domain->dom_mtx;
- error = msleep((caddr_t)&so->so_timeo, mutex_held, PSOCK | PCATCH,
- "connec", 0);
- if ((so->so_state & SS_DRAINING)) {
- error = ECONNABORTED;
- }
- if (error)
- break;
- }
- if (error == 0) {
- error = so->so_error;
- so->so_error = 0;
- }
-bad:
- so->so_state &= ~SS_ISCONNECTING;
- socket_unlock(so, 1);
- FREE(sa, M_SONAME);
if (error == ERESTART)
error = EINTR;
out:
return (error);
}
-int
-socketpair(struct proc *p, struct socketpair_args *uap, __unused register_t *retval)
+static int
+connectx_nocancel(struct proc *p, struct connectx_args *uap, int *retval)
{
- struct fileproc *fp1, *fp2;
- struct socket *so1, *so2;
- int fd, error, sv[2];
+#pragma unused(p, retval)
+ struct sockaddr_storage ss, sd;
+ struct sockaddr *src = NULL, *dst = NULL;
+ struct socket *so;
+ int error, error1, fd = uap->socket;
+ boolean_t dgram;
+ sae_connid_t cid = SAE_CONNID_ANY;
+ struct user32_sa_endpoints ep32;
+ struct user64_sa_endpoints ep64;
+ struct user_sa_endpoints ep;
+ user_ssize_t bytes_written = 0;
+ struct user_iovec *iovp;
+ uio_t auio = NULL;
- AUDIT_ARG(socket, uap->domain, uap->type, uap->protocol);
- error = socreate(uap->domain, &so1, uap->type, uap->protocol);
- if (error)
+ AUDIT_ARG(fd, uap->socket);
+ error = file_socket(fd, &so);
+ if (error != 0)
return (error);
- error = socreate(uap->domain, &so2, uap->type, uap->protocol);
- if (error)
- goto free1;
+ if (so == NULL) {
+ error = EBADF;
+ goto out;
+ }
- error = falloc(p, &fp1, &fd);
- if (error) {
- goto free2;
+ if (uap->endpoints == USER_ADDR_NULL) {
+ error = EINVAL;
+ goto out;
}
- fp1->f_flag = FREAD|FWRITE;
- fp1->f_type = DTYPE_SOCKET;
- fp1->f_ops = &socketops;
- fp1->f_data = (caddr_t)so1;
- sv[0] = fd;
- error = falloc(p, &fp2, &fd);
- if (error) {
- goto free3;
+ if (IS_64BIT_PROCESS(p)) {
+ error = copyin(uap->endpoints, (caddr_t)&ep64, sizeof(ep64));
+ if (error != 0)
+ goto out;
+
+ ep.sae_srcif = ep64.sae_srcif;
+ ep.sae_srcaddr = ep64.sae_srcaddr;
+ ep.sae_srcaddrlen = ep64.sae_srcaddrlen;
+ ep.sae_dstaddr = ep64.sae_dstaddr;
+ ep.sae_dstaddrlen = ep64.sae_dstaddrlen;
+ } else {
+ error = copyin(uap->endpoints, (caddr_t)&ep32, sizeof(ep32));
+ if (error != 0)
+ goto out;
+
+ ep.sae_srcif = ep32.sae_srcif;
+ ep.sae_srcaddr = ep32.sae_srcaddr;
+ ep.sae_srcaddrlen = ep32.sae_srcaddrlen;
+ ep.sae_dstaddr = ep32.sae_dstaddr;
+ ep.sae_dstaddrlen = ep32.sae_dstaddrlen;
}
- fp2->f_flag = FREAD|FWRITE;
- fp2->f_type = DTYPE_SOCKET;
- fp2->f_ops = &socketops;
- fp2->f_data = (caddr_t)so2;
- sv[1] = fd;
- error = soconnect2(so1, so2);
- if (error) {
- goto free4;
+ /*
+ * Ask getsockaddr{_s} to not translate AF_UNSPEC to AF_INET
+ * if this is a datagram socket; translate for other types.
+ */
+ dgram = (so->so_type == SOCK_DGRAM);
+
+ /* Get socket address now before we obtain socket lock */
+ if (ep.sae_srcaddr != USER_ADDR_NULL) {
+ if (ep.sae_srcaddrlen > sizeof (ss)) {
+ error = getsockaddr(so, &src, ep.sae_srcaddr, ep.sae_srcaddrlen, dgram);
+ } else {
+ error = getsockaddr_s(so, &ss, ep.sae_srcaddr, ep.sae_srcaddrlen, dgram);
+ if (error == 0)
+ src = (struct sockaddr *)&ss;
+ }
+
+ if (error)
+ goto out;
}
- if (uap->type == SOCK_DGRAM) {
- /*
- * Datagram socket connection is asymmetric.
- */
- error = soconnect2(so2, so1);
- if (error) {
- goto free4;
- }
+
+ if (ep.sae_dstaddr == USER_ADDR_NULL) {
+ error = EINVAL;
+ goto out;
}
- proc_fdlock(p);
- *fdflags(p, sv[0]) &= ~UF_RESERVED;
- *fdflags(p, sv[1]) &= ~UF_RESERVED;
- fp_drop(p, sv[0], fp1, 1);
- fp_drop(p, sv[1], fp2, 1);
- proc_fdunlock(p);
+ /* Get socket address now before we obtain socket lock */
+ if (ep.sae_dstaddrlen > sizeof (sd)) {
+ error = getsockaddr(so, &dst, ep.sae_dstaddr, ep.sae_dstaddrlen, dgram);
+ } else {
+ error = getsockaddr_s(so, &sd, ep.sae_dstaddr, ep.sae_dstaddrlen, dgram);
+ if (error == 0)
+ dst = (struct sockaddr *)&sd;
+ }
- error = copyout((caddr_t)sv, uap->rsv, 2 * sizeof(int));
-#if 0 /* old pipe(2) syscall compatability, unused these days */
- retval[0] = sv[0]; /* XXX ??? */
- retval[1] = sv[1]; /* XXX ??? */
-#endif /* 0 */
- return (error);
-free4:
- fp_free(p, sv[1], fp2);
-free3:
- fp_free(p, sv[0], fp1);
-free2:
- (void)soclose(so2);
-free1:
- (void)soclose(so1);
- return (error);
-}
+ if (error)
+ goto out;
+
+ VERIFY(dst != NULL);
+
+ if (uap->iov != USER_ADDR_NULL) {
+ /* Verify range before calling uio_create() */
+ if (uap->iovcnt <= 0 || uap->iovcnt > UIO_MAXIOV)
+ return (EINVAL);
+
+ if (uap->len == USER_ADDR_NULL)
+ return (EINVAL);
+
+ /* allocate a uio to hold the number of iovecs passed */
+ auio = uio_create(uap->iovcnt, 0,
+ (IS_64BIT_PROCESS(p) ? UIO_USERSPACE64 : UIO_USERSPACE32),
+ UIO_WRITE);
+
+ if (auio == NULL) {
+ error = ENOMEM;
+ goto out;
+ }
+
+ /*
+ * get location of iovecs within the uio.
+ * then copyin the iovecs from user space.
+ */
+ iovp = uio_iovsaddr(auio);
+ if (iovp == NULL) {
+ error = ENOMEM;
+ goto out;
+ }
+ error = copyin_user_iovec_array(uap->iov,
+ IS_64BIT_PROCESS(p) ? UIO_USERSPACE64 : UIO_USERSPACE32,
+ uap->iovcnt, iovp);
+ if (error != 0)
+ goto out;
+
+ /* finish setup of uio_t */
+ error = uio_calculateresid(auio);
+ if (error != 0) {
+ goto out;
+ }
+ }
+
+ error = connectitx(so, src, dst, p, ep.sae_srcif, uap->associd,
+ &cid, auio, uap->flags, &bytes_written);
+ if (error == ERESTART)
+ error = EINTR;
+
+ if (uap->len != USER_ADDR_NULL) {
+ error1 = copyout(&bytes_written, uap->len, sizeof (uap->len));
+ /* give precedence to connectitx errors */
+ if ((error1 != 0) && (error == 0))
+ error = error1;
+ }
+
+ if (uap->connid != USER_ADDR_NULL) {
+ error1 = copyout(&cid, uap->connid, sizeof (cid));
+ /* give precedence to connectitx errors */
+ if ((error1 != 0) && (error == 0))
+ error = error1;
+ }
+out:
+ file_drop(fd);
+ if (auio != NULL) {
+ uio_free(auio);
+ }
+ if (src != NULL && src != SA(&ss))
+ FREE(src, M_SONAME);
+ if (dst != NULL && dst != SA(&sd))
+ FREE(dst, M_SONAME);
+ return (error);
+}
+
+int
+connectx(struct proc *p, struct connectx_args *uap, int *retval)
+{
+ /*
+ * Due to similiarity with a POSIX interface, define as
+ * an unofficial cancellation point.
+ */
+ __pthread_testcancel(1);
+ return (connectx_nocancel(p, uap, retval));
+}
+
+static int
+connectit(struct socket *so, struct sockaddr *sa)
+{
+ int error;
+
+ AUDIT_ARG(sockaddr, vfs_context_cwd(vfs_context_current()), sa);
+#if CONFIG_MACF_SOCKET_SUBSET
+ if ((error = mac_socket_check_connect(kauth_cred_get(), so, sa)) != 0)
+ return (error);
+#endif /* MAC_SOCKET_SUBSET */
+
+ socket_lock(so, 1);
+ if ((so->so_state & SS_NBIO) && (so->so_state & SS_ISCONNECTING)) {
+ error = EALREADY;
+ goto out;
+ }
+ error = soconnectlock(so, sa, 0);
+ if (error != 0) {
+ so->so_state &= ~SS_ISCONNECTING;
+ goto out;
+ }
+ if ((so->so_state & SS_NBIO) && (so->so_state & SS_ISCONNECTING)) {
+ error = EINPROGRESS;
+ goto out;
+ }
+ while ((so->so_state & SS_ISCONNECTING) && so->so_error == 0) {
+ lck_mtx_t *mutex_held;
+
+ if (so->so_proto->pr_getlock != NULL)
+ mutex_held = (*so->so_proto->pr_getlock)(so, 0);
+ else
+ mutex_held = so->so_proto->pr_domain->dom_mtx;
+ error = msleep((caddr_t)&so->so_timeo, mutex_held,
+ PSOCK | PCATCH, __func__, 0);
+ if (so->so_state & SS_DRAINING) {
+ error = ECONNABORTED;
+ }
+ if (error != 0)
+ break;
+ }
+ if (error == 0) {
+ error = so->so_error;
+ so->so_error = 0;
+ }
+out:
+ socket_unlock(so, 1);
+ return (error);
+}
+
+static int
+connectitx(struct socket *so, struct sockaddr *src,
+ struct sockaddr *dst, struct proc *p, uint32_t ifscope,
+ sae_associd_t aid, sae_connid_t *pcid, uio_t auio, unsigned int flags,
+ user_ssize_t *bytes_written)
+{
+ int error;
+#pragma unused (flags)
+
+ VERIFY(dst != NULL);
+
+ AUDIT_ARG(sockaddr, vfs_context_cwd(vfs_context_current()), dst);
+#if CONFIG_MACF_SOCKET_SUBSET
+ if ((error = mac_socket_check_connect(kauth_cred_get(), so, dst)) != 0)
+ return (error);
+#endif /* MAC_SOCKET_SUBSET */
+
+ socket_lock(so, 1);
+ if ((so->so_state & SS_NBIO) && (so->so_state & SS_ISCONNECTING)) {
+ error = EALREADY;
+ goto out;
+ }
+
+ if ((so->so_proto->pr_flags & PR_DATA_IDEMPOTENT) &&
+ (flags & CONNECT_DATA_IDEMPOTENT)) {
+ so->so_flags1 |= SOF1_DATA_IDEMPOTENT;
+
+ if (flags & CONNECT_DATA_AUTHENTICATED)
+ so->so_flags |= SOF1_DATA_AUTHENTICATED;
+ }
+
+ /*
+ * Case 1: CONNECT_RESUME_ON_READ_WRITE set, no data.
+ * Case 2: CONNECT_RESUME_ON_READ_WRITE set, with data (user error)
+ * Case 3: CONNECT_RESUME_ON_READ_WRITE not set, with data
+ * Case 3 allows user to combine write with connect even if they have
+ * no use for TFO (such as regular TCP, and UDP).
+ * Case 4: CONNECT_RESUME_ON_READ_WRITE not set, no data (regular case)
+ */
+ if ((so->so_proto->pr_flags & PR_PRECONN_WRITE) &&
+ ((flags & CONNECT_RESUME_ON_READ_WRITE) || auio))
+ so->so_flags1 |= SOF1_PRECONNECT_DATA;
+
+ /*
+ * If a user sets data idempotent and does not pass an uio, or
+ * sets CONNECT_RESUME_ON_READ_WRITE, this is an error, reset
+ * SOF1_DATA_IDEMPOTENT.
+ */
+ if (!(so->so_flags1 & SOF1_PRECONNECT_DATA) &&
+ (so->so_flags1 & SOF1_DATA_IDEMPOTENT)) {
+ /* We should return EINVAL instead perhaps. */
+ so->so_flags1 &= ~SOF1_DATA_IDEMPOTENT;
+ }
+
+ error = soconnectxlocked(so, src, dst, p, ifscope,
+ aid, pcid, 0, NULL, 0, auio, bytes_written);
+ if (error != 0) {
+ so->so_state &= ~SS_ISCONNECTING;
+ goto out;
+ }
+ /*
+ * If, after the call to soconnectxlocked the flag is still set (in case
+ * data has been queued and the connect() has actually been triggered,
+ * it will have been unset by the transport), we exit immediately. There
+ * is no reason to wait on any event.
+ */
+ if (so->so_flags1 & SOF1_PRECONNECT_DATA) {
+ error = 0;
+ goto out;
+ }
+ if ((so->so_state & SS_NBIO) && (so->so_state & SS_ISCONNECTING)) {
+ error = EINPROGRESS;
+ goto out;
+ }
+ while ((so->so_state & SS_ISCONNECTING) && so->so_error == 0) {
+ lck_mtx_t *mutex_held;
+
+ if (so->so_proto->pr_getlock != NULL)
+ mutex_held = (*so->so_proto->pr_getlock)(so, 0);
+ else
+ mutex_held = so->so_proto->pr_domain->dom_mtx;
+ error = msleep((caddr_t)&so->so_timeo, mutex_held,
+ PSOCK | PCATCH, __func__, 0);
+ if (so->so_state & SS_DRAINING) {
+ error = ECONNABORTED;
+ }
+ if (error != 0)
+ break;
+ }
+ if (error == 0) {
+ error = so->so_error;
+ so->so_error = 0;
+ }
+out:
+ socket_unlock(so, 1);
+ return (error);
+}
+
+int
+peeloff(struct proc *p, struct peeloff_args *uap, int *retval)
+{
+ /*
+ * Due to similiarity with a POSIX interface, define as
+ * an unofficial cancellation point.
+ */
+ __pthread_testcancel(1);
+ return (peeloff_nocancel(p, uap, retval));
+}
static int
-sendit(struct proc *p, int s, struct user_msghdr *mp, uio_t uiop,
- int flags, register_t *retval)
+peeloff_nocancel(struct proc *p, struct peeloff_args *uap, int *retval)
{
- struct mbuf *control;
- struct sockaddr *to;
+ struct fileproc *fp;
+ struct socket *mp_so, *so = NULL;
+ int newfd, fd = uap->s;
+ short fflag; /* type must match fp->f_flag */
int error;
+
+ *retval = -1;
+
+ error = fp_getfsock(p, fd, &fp, &mp_so);
+ if (error != 0) {
+ if (error == EOPNOTSUPP)
+ error = ENOTSOCK;
+ goto out_nofile;
+ }
+ if (mp_so == NULL) {
+ error = EBADF;
+ goto out;
+ }
+
+ socket_lock(mp_so, 1);
+ error = sopeelofflocked(mp_so, uap->aid, &so);
+ if (error != 0) {
+ socket_unlock(mp_so, 1);
+ goto out;
+ }
+ VERIFY(so != NULL);
+ socket_unlock(mp_so, 0); /* keep ref on mp_so for us */
+
+ fflag = fp->f_flag;
+ error = falloc(p, &fp, &newfd, vfs_context_current());
+ if (error != 0) {
+ /* drop this socket (probably ran out of file descriptors) */
+ soclose(so);
+ sodereference(mp_so); /* our mp_so ref */
+ goto out;
+ }
+
+ fp->f_flag = fflag;
+ fp->f_ops = &socketops;
+ fp->f_data = (caddr_t)so;
+
+ /*
+ * If the socket has been marked as inactive by sosetdefunct(),
+ * disallow further operations on it.
+ */
+ if (so->so_flags & SOF_DEFUNCT) {
+ sodefunct(current_proc(), so,
+ SHUTDOWN_SOCKET_LEVEL_DISCONNECT_INTERNAL);
+ }
+
+ proc_fdlock(p);
+ procfdtbl_releasefd(p, newfd, NULL);
+ fp_drop(p, newfd, fp, 1);
+ proc_fdunlock(p);
+
+ sodereference(mp_so); /* our mp_so ref */
+ *retval = newfd;
+
+out:
+ file_drop(fd);
+
+out_nofile:
+ return (error);
+}
+
+int
+disconnectx(struct proc *p, struct disconnectx_args *uap, int *retval)
+{
+ /*
+ * Due to similiarity with a POSIX interface, define as
+ * an unofficial cancellation point.
+ */
+ __pthread_testcancel(1);
+ return (disconnectx_nocancel(p, uap, retval));
+}
+
+static int
+disconnectx_nocancel(struct proc *p, struct disconnectx_args *uap, int *retval)
+{
+#pragma unused(p, retval)
struct socket *so;
- user_ssize_t len;
-#if KTRACE
- uio_t ktruio = NULL;
-#endif
-
- KERNEL_DEBUG(DBG_FNC_SENDIT | DBG_FUNC_START, 0,0,0,0,0);
+ int fd = uap->s;
+ int error;
- error = file_socket(s, &so);
- if (error )
- {
- KERNEL_DEBUG(DBG_FNC_SENDIT | DBG_FUNC_END, error,0,0,0,0);
- return (error);
+ error = file_socket(fd, &so);
+ if (error != 0)
+ return (error);
+ if (so == NULL) {
+ error = EBADF;
+ goto out;
}
-
- if (mp->msg_name) {
- error = getsockaddr(&to, mp->msg_name, mp->msg_namelen);
+
+ error = sodisconnectx(so, uap->aid, uap->cid);
+out:
+ file_drop(fd);
+ return (error);
+}
+
+/*
+ * Returns: 0 Success
+ * socreate:EAFNOSUPPORT
+ * socreate:EPROTOTYPE
+ * socreate:EPROTONOSUPPORT
+ * socreate:ENOBUFS
+ * socreate:ENOMEM
+ * socreate:EISCONN
+ * socreate:??? [other protocol families, IPSEC]
+ * falloc:ENFILE
+ * falloc:EMFILE
+ * falloc:ENOMEM
+ * copyout:EFAULT
+ * soconnect2:EINVAL
+ * soconnect2:EPROTOTYPE
+ * soconnect2:??? [other protocol families[
+ */
+int
+socketpair(struct proc *p, struct socketpair_args *uap,
+ __unused int32_t *retval)
+{
+ struct fileproc *fp1, *fp2;
+ struct socket *so1, *so2;
+ int fd, error, sv[2];
+
+ AUDIT_ARG(socket, uap->domain, uap->type, uap->protocol);
+ error = socreate(uap->domain, &so1, uap->type, uap->protocol);
+ if (error)
+ return (error);
+ error = socreate(uap->domain, &so2, uap->type, uap->protocol);
+ if (error)
+ goto free1;
+
+ error = falloc(p, &fp1, &fd, vfs_context_current());
+ if (error) {
+ goto free2;
+ }
+ fp1->f_flag = FREAD|FWRITE;
+ fp1->f_ops = &socketops;
+ fp1->f_data = (caddr_t)so1;
+ sv[0] = fd;
+
+ error = falloc(p, &fp2, &fd, vfs_context_current());
+ if (error) {
+ goto free3;
+ }
+ fp2->f_flag = FREAD|FWRITE;
+ fp2->f_ops = &socketops;
+ fp2->f_data = (caddr_t)so2;
+ sv[1] = fd;
+
+ error = soconnect2(so1, so2);
+ if (error) {
+ goto free4;
+ }
+ if (uap->type == SOCK_DGRAM) {
+ /*
+ * Datagram socket connection is asymmetric.
+ */
+ error = soconnect2(so2, so1);
if (error) {
- KERNEL_DEBUG(DBG_FNC_SENDIT | DBG_FUNC_END, error,0,0,0,0);
- goto out;
+ goto free4;
}
- AUDIT_ARG(sockaddr, p, to);
- } else {
- to = 0;
}
- if (mp->msg_control) {
- if (mp->msg_controllen < ((socklen_t)sizeof(struct cmsghdr))
-#if COMPAT_43_SOCKET
- && !(mp->msg_flags & MSG_COMPAT)
-#endif
- ) {
+
+ if ((error = copyout(sv, uap->rsv, 2 * sizeof (int))) != 0)
+ goto free4;
+
+ proc_fdlock(p);
+ procfdtbl_releasefd(p, sv[0], NULL);
+ procfdtbl_releasefd(p, sv[1], NULL);
+ fp_drop(p, sv[0], fp1, 1);
+ fp_drop(p, sv[1], fp2, 1);
+ proc_fdunlock(p);
+
+ return (0);
+free4:
+ fp_free(p, sv[1], fp2);
+free3:
+ fp_free(p, sv[0], fp1);
+free2:
+ (void) soclose(so2);
+free1:
+ (void) soclose(so1);
+ return (error);
+}
+
+/*
+ * Returns: 0 Success
+ * EINVAL
+ * ENOBUFS
+ * EBADF
+ * EPIPE
+ * EACCES Mandatory Access Control failure
+ * file_socket:ENOTSOCK
+ * file_socket:EBADF
+ * getsockaddr:ENAMETOOLONG Filename too long
+ * getsockaddr:EINVAL Invalid argument
+ * getsockaddr:ENOMEM Not enough space
+ * getsockaddr:EFAULT Bad address
+ * <pru_sosend>:EACCES[TCP]
+ * <pru_sosend>:EADDRINUSE[TCP]
+ * <pru_sosend>:EADDRNOTAVAIL[TCP]
+ * <pru_sosend>:EAFNOSUPPORT[TCP]
+ * <pru_sosend>:EAGAIN[TCP]
+ * <pru_sosend>:EBADF
+ * <pru_sosend>:ECONNRESET[TCP]
+ * <pru_sosend>:EFAULT
+ * <pru_sosend>:EHOSTUNREACH[TCP]
+ * <pru_sosend>:EINTR
+ * <pru_sosend>:EINVAL
+ * <pru_sosend>:EISCONN[AF_INET]
+ * <pru_sosend>:EMSGSIZE[TCP]
+ * <pru_sosend>:ENETDOWN[TCP]
+ * <pru_sosend>:ENETUNREACH[TCP]
+ * <pru_sosend>:ENOBUFS
+ * <pru_sosend>:ENOMEM[TCP]
+ * <pru_sosend>:ENOTCONN[AF_INET]
+ * <pru_sosend>:EOPNOTSUPP
+ * <pru_sosend>:EPERM[TCP]
+ * <pru_sosend>:EPIPE
+ * <pru_sosend>:EWOULDBLOCK
+ * <pru_sosend>:???[TCP] [ignorable: mostly IPSEC/firewall/DLIL]
+ * <pru_sosend>:???[AF_INET] [whatever a filter author chooses]
+ * <pru_sosend>:??? [value from so_error]
+ * sockargs:???
+ */
+static int
+sendit(struct proc *p, struct socket *so, struct user_msghdr *mp, uio_t uiop,
+ int flags, int32_t *retval)
+{
+ struct mbuf *control = NULL;
+ struct sockaddr_storage ss;
+ struct sockaddr *to = NULL;
+ boolean_t want_free = TRUE;
+ int error;
+ user_ssize_t len;
+
+ KERNEL_DEBUG(DBG_FNC_SENDIT | DBG_FUNC_START, 0, 0, 0, 0, 0);
+
+ if (mp->msg_name != USER_ADDR_NULL) {
+ if (mp->msg_namelen > sizeof (ss)) {
+ error = getsockaddr(so, &to, mp->msg_name,
+ mp->msg_namelen, TRUE);
+ } else {
+ error = getsockaddr_s(so, &ss, mp->msg_name,
+ mp->msg_namelen, TRUE);
+ if (error == 0) {
+ to = (struct sockaddr *)&ss;
+ want_free = FALSE;
+ }
+ }
+ if (error != 0)
+ goto out;
+ AUDIT_ARG(sockaddr, vfs_context_cwd(vfs_context_current()), to);
+ }
+ if (mp->msg_control != USER_ADDR_NULL) {
+ if (mp->msg_controllen < sizeof (struct cmsghdr)) {
error = EINVAL;
goto bad;
}
error = sockargs(&control, mp->msg_control,
mp->msg_controllen, MT_CONTROL);
- if (error)
+ if (error != 0)
goto bad;
-#if COMPAT_43_SOCKET
- if (mp->msg_flags & MSG_COMPAT) {
- register struct cmsghdr *cm;
-
- M_PREPEND(control, sizeof(*cm), M_WAIT);
- if (control == 0) {
- error = ENOBUFS;
- goto bad;
- } else {
- cm = mtod(control, struct cmsghdr *);
- cm->cmsg_len = control->m_len;
- cm->cmsg_level = SOL_SOCKET;
- cm->cmsg_type = SCM_RIGHTS;
- }
- }
-#endif
- } else {
- control = 0;
}
-#if KTRACE
- if (KTRPOINT(p, KTR_GENIO)) {
- ktruio = uio_duplicate(uiop);
- }
-#endif
+#if CONFIG_MACF_SOCKET_SUBSET
+ /*
+ * We check the state without holding the socket lock;
+ * if a race condition occurs, it would simply result
+ * in an extra call to the MAC check function.
+ */
+ if (to != NULL &&
+ !(so->so_state & SS_DEFUNCT) &&
+ (error = mac_socket_check_send(kauth_cred_get(), so, to)) != 0)
+ goto bad;
+#endif /* MAC_SOCKET_SUBSET */
len = uio_resid(uiop);
- if (so == NULL)
- error = EBADF;
- else
- error = so->so_proto->pr_usrreqs->pru_sosend(so, to, uiop, 0, control,
- flags);
- if (error) {
+ error = so->so_proto->pr_usrreqs->pru_sosend(so, to, uiop, 0,
+ control, flags);
+ if (error != 0) {
if (uio_resid(uiop) != len && (error == ERESTART ||
error == EINTR || error == EWOULDBLOCK))
error = 0;
- /* Generation of SIGPIPE can be controlled per socket */
+ /* Generation of SIGPIPE can be controlled per socket */
if (error == EPIPE && !(so->so_flags & SOF_NOSIGPIPE))
psignal(p, SIGPIPE);
}
if (error == 0)
*retval = (int)(len - uio_resid(uiop));
bad:
-#if KTRACE
- if (ktruio != NULL) {
- if (error == 0) {
- uio_setresid(ktruio, retval[0]);
- ktrgenio(p->p_tracep, s, UIO_WRITE, ktruio, error);
- }
- uio_free(ktruio);
- }
-#endif
- if (to)
+ if (to != NULL && want_free)
FREE(to, M_SONAME);
- KERNEL_DEBUG(DBG_FNC_SENDIT | DBG_FUNC_END, error,0,0,0,0);
out:
- file_drop(s);
+ KERNEL_DEBUG(DBG_FNC_SENDIT | DBG_FUNC_END, error, 0, 0, 0, 0);
+
return (error);
}
+/*
+ * Returns: 0 Success
+ * ENOMEM
+ * sendit:??? [see sendit definition in this file]
+ * write:??? [4056224: applicable for pipes]
+ */
+int
+sendto(struct proc *p, struct sendto_args *uap, int32_t *retval)
+{
+ __pthread_testcancel(1);
+ return (sendto_nocancel(p, (struct sendto_nocancel_args *)uap, retval));
+}
int
-sendto(struct proc *p, struct sendto_args *uap, register_t *retval)
+sendto_nocancel(struct proc *p,
+ struct sendto_nocancel_args *uap,
+ int32_t *retval)
{
struct user_msghdr msg;
int error;
uio_t auio = NULL;
+ struct socket *so;
- KERNEL_DEBUG(DBG_FNC_SENDTO | DBG_FUNC_START, 0,0,0,0,0);
+ KERNEL_DEBUG(DBG_FNC_SENDTO | DBG_FUNC_START, 0, 0, 0, 0, 0);
AUDIT_ARG(fd, uap->s);
auio = uio_create(1, 0,
- (IS_64BIT_PROCESS(p) ? UIO_USERSPACE64 : UIO_USERSPACE32),
- UIO_WRITE);
+ (IS_64BIT_PROCESS(p) ? UIO_USERSPACE64 : UIO_USERSPACE32),
+ UIO_WRITE);
if (auio == NULL) {
- return (ENOMEM);
+ error = ENOMEM;
+ goto done;
}
uio_addiov(auio, uap->buf, uap->len);
msg.msg_control = 0;
msg.msg_flags = 0;
- error = sendit(p, uap->s, &msg, auio, uap->flags, retval);
-
- if (auio != NULL) {
+ error = file_socket(uap->s, &so);
+ if (error)
+ goto done;
+
+ if (so == NULL) {
+ error = EBADF;
+ } else {
+ error = sendit(p, so, &msg, auio, uap->flags, retval);
+ }
+
+ file_drop(uap->s);
+done:
+ if (auio != NULL)
uio_free(auio);
+
+ KERNEL_DEBUG(DBG_FNC_SENDTO | DBG_FUNC_END, error, *retval, 0, 0, 0);
+
+ return (error);
+}
+
+/*
+ * Returns: 0 Success
+ * ENOBUFS
+ * copyin:EFAULT
+ * sendit:??? [see sendit definition in this file]
+ */
+int
+sendmsg(struct proc *p, struct sendmsg_args *uap, int32_t *retval)
+{
+ __pthread_testcancel(1);
+ return (sendmsg_nocancel(p, (struct sendmsg_nocancel_args *)uap,
+ retval));
+}
+
+int
+sendmsg_nocancel(struct proc *p, struct sendmsg_nocancel_args *uap,
+ int32_t *retval)
+{
+ struct user32_msghdr msg32;
+ struct user64_msghdr msg64;
+ struct user_msghdr user_msg;
+ caddr_t msghdrp;
+ int size_of_msghdr;
+ int error;
+ uio_t auio = NULL;
+ struct user_iovec *iovp;
+ struct socket *so;
+
+ KERNEL_DEBUG(DBG_FNC_SENDMSG | DBG_FUNC_START, 0, 0, 0, 0, 0);
+ AUDIT_ARG(fd, uap->s);
+ if (IS_64BIT_PROCESS(p)) {
+ msghdrp = (caddr_t)&msg64;
+ size_of_msghdr = sizeof (msg64);
+ } else {
+ msghdrp = (caddr_t)&msg32;
+ size_of_msghdr = sizeof (msg32);
}
-
-#if HACK_FOR_4056224
- /*
- * Radar 4056224
- * Temporary workaround to let send() and recv() work over a pipe for binary compatibility
- * This will be removed in the release following Tiger
- */
- if (error == ENOTSOCK) {
- struct fileproc *fp;
-
- if (fp_lookup(p, uap->s, &fp, 0) == 0) {
- (void) fp_drop(p, uap->s, fp,0);
-
- if (fp->f_type == DTYPE_PIPE) {
- struct write_args write_uap;
- user_ssize_t write_retval;
-
- if (p->p_pid > last_pid_4056224) {
- last_pid_4056224 = p->p_pid;
-
- printf("%s[%d] uses send/recv on a pipe\n",
- p->p_comm, p->p_pid);
- }
-
- bzero(&write_uap, sizeof(struct write_args));
- write_uap.fd = uap->s;
- write_uap.cbuf = uap->buf;
- write_uap.nbyte = uap->len;
-
- error = write(p, &write_uap, &write_retval);
- *retval = (int)write_retval;
- }
+ error = copyin(uap->msg, msghdrp, size_of_msghdr);
+ if (error) {
+ KERNEL_DEBUG(DBG_FNC_SENDMSG | DBG_FUNC_END, error, 0, 0, 0, 0);
+ return (error);
+ }
+
+ if (IS_64BIT_PROCESS(p)) {
+ user_msg.msg_flags = msg64.msg_flags;
+ user_msg.msg_controllen = msg64.msg_controllen;
+ user_msg.msg_control = msg64.msg_control;
+ user_msg.msg_iovlen = msg64.msg_iovlen;
+ user_msg.msg_iov = msg64.msg_iov;
+ user_msg.msg_namelen = msg64.msg_namelen;
+ user_msg.msg_name = msg64.msg_name;
+ } else {
+ user_msg.msg_flags = msg32.msg_flags;
+ user_msg.msg_controllen = msg32.msg_controllen;
+ user_msg.msg_control = msg32.msg_control;
+ user_msg.msg_iovlen = msg32.msg_iovlen;
+ user_msg.msg_iov = msg32.msg_iov;
+ user_msg.msg_namelen = msg32.msg_namelen;
+ user_msg.msg_name = msg32.msg_name;
+ }
+
+ if (user_msg.msg_iovlen <= 0 || user_msg.msg_iovlen > UIO_MAXIOV) {
+ KERNEL_DEBUG(DBG_FNC_SENDMSG | DBG_FUNC_END, EMSGSIZE,
+ 0, 0, 0, 0);
+ return (EMSGSIZE);
+ }
+
+ /* allocate a uio large enough to hold the number of iovecs passed */
+ auio = uio_create(user_msg.msg_iovlen, 0,
+ (IS_64BIT_PROCESS(p) ? UIO_USERSPACE64 : UIO_USERSPACE32),
+ UIO_WRITE);
+ if (auio == NULL) {
+ error = ENOBUFS;
+ goto done;
+ }
+
+ if (user_msg.msg_iovlen) {
+ /*
+ * get location of iovecs within the uio.
+ * then copyin the iovecs from user space.
+ */
+ iovp = uio_iovsaddr(auio);
+ if (iovp == NULL) {
+ error = ENOBUFS;
+ goto done;
}
+ error = copyin_user_iovec_array(user_msg.msg_iov,
+ IS_64BIT_PROCESS(p) ? UIO_USERSPACE64 : UIO_USERSPACE32,
+ user_msg.msg_iovlen, iovp);
+ if (error)
+ goto done;
+ user_msg.msg_iov = CAST_USER_ADDR_T(iovp);
+
+ /* finish setup of uio_t */
+ error = uio_calculateresid(auio);
+ if (error) {
+ goto done;
+ }
+ } else {
+ user_msg.msg_iov = 0;
}
-#endif /* HACK_FOR_4056224 */
- KERNEL_DEBUG(DBG_FNC_SENDTO | DBG_FUNC_END, error, *retval,0,0,0);
-
- return(error);
+ /* msg_flags is ignored for send */
+ user_msg.msg_flags = 0;
+
+ error = file_socket(uap->s, &so);
+ if (error) {
+ goto done;
+ }
+ if (so == NULL) {
+ error = EBADF;
+ } else {
+ error = sendit(p, so, &user_msg, auio, uap->flags, retval);
+ }
+ file_drop(uap->s);
+done:
+ if (auio != NULL) {
+ uio_free(auio);
+ }
+ KERNEL_DEBUG(DBG_FNC_SENDMSG | DBG_FUNC_END, error, 0, 0, 0, 0);
+
+ return (error);
}
-#if COMPAT_43_SOCKET
int
-osend(__unused struct proc *p,
- __unused struct osend_args *uap,
- __unused register_t *retval)
+sendmsg_x(struct proc *p, struct sendmsg_x_args *uap, user_ssize_t *retval)
{
- /* these are no longer supported and in fact
- * there is no way to call it directly.
- * LP64todo - remove this once we're sure there are no clients
+ int error = 0;
+ struct user_msghdr_x *user_msg_x = NULL;
+ struct uio **uiop = NULL;
+ struct socket *so;
+ u_int i;
+ struct sockaddr *to = NULL;
+ user_ssize_t len_before = 0, len_after;
+ int need_drop = 0;
+ size_t size_of_msghdr;
+ void *umsgp = NULL;
+ u_int uiocnt;
+ int has_addr_or_ctl = 0;
+
+ KERNEL_DEBUG(DBG_FNC_SENDMSG_X | DBG_FUNC_START, 0, 0, 0, 0, 0);
+
+ error = file_socket(uap->s, &so);
+ if (error) {
+ goto out;
+ }
+ need_drop = 1;
+ if (so == NULL) {
+ error = EBADF;
+ goto out;
+ }
+
+ /*
+ * Input parameter range check
+ */
+ if (uap->cnt == 0 || uap->cnt > UIO_MAXIOV) {
+ error = EINVAL;
+ goto out;
+ }
+ /*
+ * Clip to max currently allowed
+ */
+ if (uap->cnt > somaxsendmsgx)
+ uap->cnt = somaxsendmsgx;
+
+ user_msg_x = _MALLOC(uap->cnt * sizeof(struct user_msghdr_x),
+ M_TEMP, M_WAITOK | M_ZERO);
+ if (user_msg_x == NULL) {
+ DBG_PRINTF("%s _MALLOC() user_msg_x failed\n", __func__);
+ error = ENOMEM;
+ goto out;
+ }
+ uiop = _MALLOC(uap->cnt * sizeof(struct uio *),
+ M_TEMP, M_WAITOK | M_ZERO);
+ if (uiop == NULL) {
+ DBG_PRINTF("%s _MALLOC() uiop failed\n", __func__);
+ error = ENOMEM;
+ goto out;
+ }
+
+ size_of_msghdr = IS_64BIT_PROCESS(p) ?
+ sizeof(struct user64_msghdr_x) : sizeof(struct user32_msghdr_x);
+
+ umsgp = _MALLOC(uap->cnt * size_of_msghdr,
+ M_TEMP, M_WAITOK | M_ZERO);
+ if (umsgp == NULL) {
+ printf("%s _MALLOC() user_msg_x failed\n", __func__);
+ error = ENOMEM;
+ goto out;
+ }
+ error = copyin(uap->msgp, umsgp, uap->cnt * size_of_msghdr);
+ if (error) {
+ DBG_PRINTF("%s copyin() failed\n", __func__);
+ goto out;
+ }
+ error = internalize_user_msghdr_array(umsgp,
+ IS_64BIT_PROCESS(p) ? UIO_USERSPACE64 : UIO_USERSPACE32,
+ UIO_WRITE, uap->cnt, user_msg_x, uiop);
+ if (error) {
+ DBG_PRINTF("%s copyin_user_msghdr_array() failed\n", __func__);
+ goto out;
+ }
+ /*
+ * Make sure the size of each message iovec and
+ * the aggregate size of all the iovec is valid
+ */
+ if (uio_array_is_valid(uiop, uap->cnt) == 0) {
+ error = EINVAL;
+ goto out;
+ }
+
+ /*
+ * Sanity check on passed arguments
*/
- return (ENOTSUP);
+ for (i = 0; i < uap->cnt; i++) {
+ struct user_msghdr_x *mp = user_msg_x + i;
+
+ /*
+ * No flags on send message
+ */
+ if (mp->msg_flags != 0) {
+ error = EINVAL;
+ goto out;
+ }
+ /*
+ * No support for address or ancillary data (yet)
+ */
+ if (mp->msg_name != USER_ADDR_NULL || mp->msg_namelen != 0)
+ has_addr_or_ctl = 1;
+
+ if (mp->msg_control != USER_ADDR_NULL ||
+ mp->msg_controllen != 0)
+ has_addr_or_ctl = 1;
+
+#if CONFIG_MACF_SOCKET_SUBSET
+ /*
+ * We check the state without holding the socket lock;
+ * if a race condition occurs, it would simply result
+ * in an extra call to the MAC check function.
+ *
+ * Note: The following check is never true taken with the
+ * current limitation that we do not accept to pass an address,
+ * this is effectively placeholder code. If we add support for
+ * addresses, we will have to check every address.
+ */
+ if (to != NULL &&
+ !(so->so_state & SS_DEFUNCT) &&
+ (error = mac_socket_check_send(kauth_cred_get(), so, to))
+ != 0)
+ goto out;
+#endif /* MAC_SOCKET_SUBSET */
+ }
+
+ len_before = uio_array_resid(uiop, uap->cnt);
+
+ /*
+ * Feed list of packets at once only for connected socket without
+ * control message
+ */
+ if (so->so_proto->pr_usrreqs->pru_sosend_list !=
+ pru_sosend_list_notsupp &&
+ has_addr_or_ctl == 0 && somaxsendmsgx == 0) {
+ error = so->so_proto->pr_usrreqs->pru_sosend_list(so, uiop,
+ uap->cnt, uap->flags);
+ } else {
+ for (i = 0; i < uap->cnt; i++) {
+ struct user_msghdr_x *mp = user_msg_x + i;
+ struct user_msghdr user_msg;
+ uio_t auio = uiop[i];
+ int32_t tmpval;
+
+ user_msg.msg_flags = mp->msg_flags;
+ user_msg.msg_controllen = mp->msg_controllen;
+ user_msg.msg_control = mp->msg_control;
+ user_msg.msg_iovlen = mp->msg_iovlen;
+ user_msg.msg_iov = mp->msg_iov;
+ user_msg.msg_namelen = mp->msg_namelen;
+ user_msg.msg_name = mp->msg_name;
+
+ error = sendit(p, so, &user_msg, auio, uap->flags,
+ &tmpval);
+ if (error != 0)
+ break;
+ }
+ }
+ len_after = uio_array_resid(uiop, uap->cnt);
+
+ VERIFY(len_after <= len_before);
+
+ if (error != 0) {
+ if (len_after != len_before && (error == ERESTART ||
+ error == EINTR || error == EWOULDBLOCK ||
+ error == ENOBUFS))
+ error = 0;
+ /* Generation of SIGPIPE can be controlled per socket */
+ if (error == EPIPE && !(so->so_flags & SOF_NOSIGPIPE))
+ psignal(p, SIGPIPE);
+ }
+ if (error == 0) {
+ uiocnt = externalize_user_msghdr_array(umsgp,
+ IS_64BIT_PROCESS(p) ? UIO_USERSPACE64 : UIO_USERSPACE32,
+ UIO_WRITE, uap->cnt, user_msg_x, uiop);
+
+ *retval = (int)(uiocnt);
+ }
+out:
+ if (need_drop)
+ file_drop(uap->s);
+ if (umsgp != NULL)
+ _FREE(umsgp, M_TEMP);
+ if (uiop != NULL) {
+ free_uio_array(uiop, uap->cnt);
+ _FREE(uiop, M_TEMP);
+ }
+ if (user_msg_x != NULL)
+ _FREE(user_msg_x, M_TEMP);
+
+ KERNEL_DEBUG(DBG_FNC_SENDMSG_X | DBG_FUNC_END, error, 0, 0, 0, 0);
+
+ return (error);
+}
+
+
+static int
+copyout_sa(struct sockaddr *fromsa, user_addr_t name, socklen_t *namelen)
+{
+ int error = 0;
+ socklen_t sa_len = 0;
+ ssize_t len;
+
+ len = *namelen;
+ if (len <= 0 || fromsa == 0) {
+ len = 0;
+ } else {
+#ifndef MIN
+#define MIN(a, b) ((a) > (b) ? (b) : (a))
+#endif
+ sa_len = fromsa->sa_len;
+ len = MIN((unsigned int)len, sa_len);
+ error = copyout(fromsa, name, (unsigned)len);
+ if (error)
+ goto out;
+ }
+ *namelen = sa_len;
+out:
+ return (0);
}
-int
-osendmsg(__unused struct proc *p,
- __unused struct osendmsg_args *uap,
- __unused register_t *retval)
-{
- /* these are no longer supported and in fact
- * there is no way to call it directly.
- * LP64todo - remove this once we're sure there are no clients
- */
- return (ENOTSUP);
-}
-#endif
+static int
+copyout_control(struct proc *p, struct mbuf *m, user_addr_t control,
+ socklen_t *controllen, int *flags)
+{
+ int error = 0;
+ ssize_t len;
+ user_addr_t ctlbuf;
+
+ len = *controllen;
+ *controllen = 0;
+ ctlbuf = control;
+
+ while (m && len > 0) {
+ unsigned int tocopy;
+ struct cmsghdr *cp = mtod(m, struct cmsghdr *);
+ int cp_size = CMSG_ALIGN(cp->cmsg_len);
+ int buflen = m->m_len;
+
+ while (buflen > 0 && len > 0) {
+ /*
+ * SCM_TIMESTAMP hack because struct timeval has a
+ * different size for 32 bits and 64 bits processes
+ */
+ if (cp->cmsg_level == SOL_SOCKET && cp->cmsg_type == SCM_TIMESTAMP) {
+ unsigned char tmp_buffer[CMSG_SPACE(sizeof(struct user64_timeval))];
+ struct cmsghdr *tmp_cp = (struct cmsghdr *)(void *)tmp_buffer;
+ int tmp_space;
+ struct timeval *tv = (struct timeval *)(void *)CMSG_DATA(cp);
+
+ tmp_cp->cmsg_level = SOL_SOCKET;
+ tmp_cp->cmsg_type = SCM_TIMESTAMP;
+ if (proc_is64bit(p)) {
+ struct user64_timeval *tv64 = (struct user64_timeval *)(void *)CMSG_DATA(tmp_cp);
-int
-sendmsg(struct proc *p, register struct sendmsg_args *uap, register_t *retval)
-{
- struct msghdr msg;
- struct user_msghdr user_msg;
- caddr_t msghdrp;
- int size_of_msghdr;
- int error;
- int size_of_iovec;
- uio_t auio = NULL;
- struct user_iovec *iovp;
+ tv64->tv_sec = tv->tv_sec;
+ tv64->tv_usec = tv->tv_usec;
- KERNEL_DEBUG(DBG_FNC_SENDMSG | DBG_FUNC_START, 0,0,0,0,0);
- AUDIT_ARG(fd, uap->s);
- if (IS_64BIT_PROCESS(p)) {
- msghdrp = (caddr_t) &user_msg;
- size_of_msghdr = sizeof(user_msg);
- size_of_iovec = sizeof(struct user_iovec);
- }
- else {
- msghdrp = (caddr_t) &msg;
- size_of_msghdr = sizeof(msg);
- size_of_iovec = sizeof(struct iovec);
- }
- error = copyin(uap->msg, msghdrp, size_of_msghdr);
- if (error)
- {
- KERNEL_DEBUG(DBG_FNC_SENDMSG | DBG_FUNC_END, error,0,0,0,0);
- return (error);
- }
+ tmp_cp->cmsg_len = CMSG_LEN(sizeof(struct user64_timeval));
+ tmp_space = CMSG_SPACE(sizeof(struct user64_timeval));
+ } else {
+ struct user32_timeval *tv32 = (struct user32_timeval *)(void *)CMSG_DATA(tmp_cp);
- /* only need to copy if user process is not 64-bit */
- if (!IS_64BIT_PROCESS(p)) {
- user_msg.msg_flags = msg.msg_flags;
- user_msg.msg_controllen = msg.msg_controllen;
- user_msg.msg_control = CAST_USER_ADDR_T(msg.msg_control);
- user_msg.msg_iovlen = msg.msg_iovlen;
- user_msg.msg_iov = CAST_USER_ADDR_T(msg.msg_iov);
- user_msg.msg_namelen = msg.msg_namelen;
- user_msg.msg_name = CAST_USER_ADDR_T(msg.msg_name);
- }
+ tv32->tv_sec = tv->tv_sec;
+ tv32->tv_usec = tv->tv_usec;
- if (user_msg.msg_iovlen <= 0 || user_msg.msg_iovlen > UIO_MAXIOV) {
- KERNEL_DEBUG(DBG_FNC_SENDMSG | DBG_FUNC_END, EMSGSIZE,0,0,0,0);
- return (EMSGSIZE);
- }
+ tmp_cp->cmsg_len = CMSG_LEN(sizeof(struct user32_timeval));
+ tmp_space = CMSG_SPACE(sizeof(struct user32_timeval));
+ }
+ if (len >= tmp_space) {
+ tocopy = tmp_space;
+ } else {
+ *flags |= MSG_CTRUNC;
+ tocopy = len;
+ }
+ error = copyout(tmp_buffer, ctlbuf, tocopy);
+ if (error)
+ goto out;
+ } else {
+ if (cp_size > buflen) {
+ panic("cp_size > buflen, something"
+ "wrong with alignment!");
+ }
+ if (len >= cp_size) {
+ tocopy = cp_size;
+ } else {
+ *flags |= MSG_CTRUNC;
+ tocopy = len;
+ }
+ error = copyout((caddr_t) cp, ctlbuf, tocopy);
+ if (error)
+ goto out;
+ }
- /* allocate a uio large enough to hold the number of iovecs passed */
- auio = uio_create(user_msg.msg_iovlen, 0,
- (IS_64BIT_PROCESS(p) ? UIO_USERSPACE64 : UIO_USERSPACE32),
- UIO_WRITE);
- if (auio == NULL) {
- error = ENOBUFS;
- goto done;
- }
-
- if (user_msg.msg_iovlen) {
- /* get location of iovecs within the uio. then copyin the iovecs from
- * user space.
- */
- iovp = uio_iovsaddr(auio);
- if (iovp == NULL) {
- error = ENOBUFS;
- goto done;
+ ctlbuf += tocopy;
+ len -= tocopy;
+
+ buflen -= cp_size;
+ cp = (struct cmsghdr *)(void *)
+ ((unsigned char *) cp + cp_size);
+ cp_size = CMSG_ALIGN(cp->cmsg_len);
}
- error = copyin(user_msg.msg_iov, (caddr_t)iovp, (user_msg.msg_iovlen * size_of_iovec));
- if (error)
- goto done;
- user_msg.msg_iov = CAST_USER_ADDR_T(iovp);
-
- /* finish setup of uio_t */
- uio_calculateresid(auio);
- }
- else {
- user_msg.msg_iov = 0;
- }
-
-#if COMPAT_43_SOCKET
- user_msg.msg_flags = 0;
-#endif
- error = sendit(p, uap->s, &user_msg, auio, uap->flags, retval);
-done:
- if (auio != NULL) {
- uio_free(auio);
- }
- KERNEL_DEBUG(DBG_FNC_SENDMSG | DBG_FUNC_END, error,0,0,0,0);
+ m = m->m_next;
+ }
+ *controllen = ctlbuf - control;
+out:
return (error);
}
+/*
+ * Returns: 0 Success
+ * ENOTSOCK
+ * EINVAL
+ * EBADF
+ * EACCES Mandatory Access Control failure
+ * copyout:EFAULT
+ * fp_lookup:EBADF
+ * <pru_soreceive>:ENOBUFS
+ * <pru_soreceive>:ENOTCONN
+ * <pru_soreceive>:EWOULDBLOCK
+ * <pru_soreceive>:EFAULT
+ * <pru_soreceive>:EINTR
+ * <pru_soreceive>:EBADF
+ * <pru_soreceive>:EINVAL
+ * <pru_soreceive>:EMSGSIZE
+ * <pru_soreceive>:???
+ *
+ * Notes: Additional return values from calls through <pru_soreceive>
+ * depend on protocols other than TCP or AF_UNIX, which are
+ * documented above.
+ */
static int
-recvit(p, s, mp, uiop, namelenp, retval)
- register struct proc *p;
- int s;
- register struct user_msghdr *mp;
- uio_t uiop;
- user_addr_t namelenp;
- register_t *retval;
+recvit(struct proc *p, int s, struct user_msghdr *mp, uio_t uiop,
+ user_addr_t namelenp, int32_t *retval)
{
- int len, error;
- struct mbuf *m, *control = 0;
- user_addr_t ctlbuf;
+ ssize_t len;
+ int error;
+ struct mbuf *control = 0;
struct socket *so;
struct sockaddr *fromsa = 0;
struct fileproc *fp;
-#if KTRACE
- uio_t ktruio = NULL;
-#endif
- KERNEL_DEBUG(DBG_FNC_RECVIT | DBG_FUNC_START, 0,0,0,0,0);
+ KERNEL_DEBUG(DBG_FNC_RECVIT | DBG_FUNC_START, 0, 0, 0, 0, 0);
proc_fdlock(p);
- if ( (error = fp_lookup(p, s, &fp, 1)) ) {
- KERNEL_DEBUG(DBG_FNC_RECVIT | DBG_FUNC_END, error,0,0,0,0);
+ if ((error = fp_lookup(p, s, &fp, 1))) {
+ KERNEL_DEBUG(DBG_FNC_RECVIT | DBG_FUNC_END, error, 0, 0, 0, 0);
proc_fdunlock(p);
- return (error);
+ return (error);
}
if (fp->f_type != DTYPE_SOCKET) {
- fp_drop(p, s, fp,1);
+ fp_drop(p, s, fp, 1);
proc_fdunlock(p);
- return(ENOTSOCK);
+ return (ENOTSOCK);
}
- so = (struct socket *)fp->f_data;
+ so = (struct socket *)fp->f_data;
+ if (so == NULL) {
+ fp_drop(p, s, fp, 1);
+ proc_fdunlock(p);
+ return (EBADF);
+ }
proc_fdunlock(p);
+
+#if CONFIG_MACF_SOCKET_SUBSET
+ /*
+ * We check the state without holding the socket lock;
+ * if a race condition occurs, it would simply result
+ * in an extra call to the MAC check function.
+ */
+ if (!(so->so_state & SS_DEFUNCT) &&
+ !(so->so_state & SS_ISCONNECTED) &&
+ !(so->so_proto->pr_flags & PR_CONNREQUIRED) &&
+ (error = mac_socket_check_receive(kauth_cred_get(), so)) != 0)
+ goto out1;
+#endif /* MAC_SOCKET_SUBSET */
if (uio_resid(uiop) < 0) {
- KERNEL_DEBUG(DBG_FNC_RECVIT | DBG_FUNC_END, EINVAL,0,0,0,0);
+ KERNEL_DEBUG(DBG_FNC_RECVIT | DBG_FUNC_END, EINVAL, 0, 0, 0, 0);
error = EINVAL;
goto out1;
}
-#if KTRACE
- if (KTRPOINT(p, KTR_GENIO)) {
- ktruio = uio_duplicate(uiop);
- }
-#endif
len = uio_resid(uiop);
- if (so == NULL)
- error = EBADF;
- else {
- error = so->so_proto->pr_usrreqs->pru_soreceive(so, &fromsa, uiop,
- (struct mbuf **)0, mp->msg_control ? &control : (struct mbuf **)0,
- &mp->msg_flags);
- }
- AUDIT_ARG(sockaddr, p, fromsa);
+ error = so->so_proto->pr_usrreqs->pru_soreceive(so, &fromsa, uiop,
+ (struct mbuf **)0, mp->msg_control ? &control : (struct mbuf **)0,
+ &mp->msg_flags);
+ if (fromsa)
+ AUDIT_ARG(sockaddr, vfs_context_cwd(vfs_context_current()),
+ fromsa);
if (error) {
if (uio_resid(uiop) != len && (error == ERESTART ||
error == EINTR || error == EWOULDBLOCK))
error = 0;
}
-#if KTRACE
- if (ktruio != NULL) {
- if (error == 0) {
- uio_setresid(ktruio, len - uio_resid(uiop));
- ktrgenio(p->p_tracep, s, UIO_WRITE, ktruio, error);
- }
- uio_free(ktruio);
- }
-#endif
if (error)
goto out;
+
*retval = len - uio_resid(uiop);
+
if (mp->msg_name) {
- len = mp->msg_namelen;
- if (len <= 0 || fromsa == 0)
- len = 0;
- else {
-#ifndef MIN
-#define MIN(a,b) ((a)>(b)?(b):(a))
-#endif
- /* save sa_len before it is destroyed by MSG_COMPAT */
- len = MIN(len, fromsa->sa_len);
-#if COMPAT_43_SOCKET
- if (mp->msg_flags & MSG_COMPAT)
- ((struct osockaddr *)fromsa)->sa_family =
- fromsa->sa_family;
-#endif
- error = copyout(fromsa, mp->msg_name, (unsigned)len);
- if (error)
- goto out;
- }
- mp->msg_namelen = len;
+ error = copyout_sa(fromsa, mp->msg_name, &mp->msg_namelen);
+ if (error)
+ goto out;
+ /* return the actual, untruncated address length */
if (namelenp &&
- (error = copyout((caddr_t)&len, namelenp, sizeof (int)))) {
-#if COMPAT_43_SOCKET
- if (mp->msg_flags & MSG_COMPAT)
- error = 0; /* old recvfrom didn't check */
- else
-#endif
+ (error = copyout((caddr_t)&mp->msg_namelen, namelenp,
+ sizeof (int)))) {
goto out;
}
}
- if (mp->msg_control) {
-#if COMPAT_43_SOCKET
- /*
- * We assume that old recvmsg calls won't receive access
- * rights and other control info, esp. as control info
- * is always optional and those options didn't exist in 4.3.
- * If we receive rights, trim the cmsghdr; anything else
- * is tossed.
- */
- if (control && mp->msg_flags & MSG_COMPAT) {
- if (mtod(control, struct cmsghdr *)->cmsg_level !=
- SOL_SOCKET ||
- mtod(control, struct cmsghdr *)->cmsg_type !=
- SCM_RIGHTS) {
- mp->msg_controllen = 0;
- goto out;
- }
- control->m_len -= sizeof (struct cmsghdr);
- control->m_data += sizeof (struct cmsghdr);
- }
-#endif
- len = mp->msg_controllen;
- m = control;
- mp->msg_controllen = 0;
- ctlbuf = mp->msg_control;
-
- while (m && len > 0) {
- unsigned int tocopy;
-
- if (len >= m->m_len)
- tocopy = m->m_len;
- else {
- mp->msg_flags |= MSG_CTRUNC;
- tocopy = len;
- }
-
- error = copyout((caddr_t)mtod(m, caddr_t), ctlbuf, tocopy);
- if (error)
- goto out;
- ctlbuf += tocopy;
- len -= tocopy;
- m = m->m_next;
- }
- mp->msg_controllen = ctlbuf - mp->msg_control;
+ if (mp->msg_control) {
+ error = copyout_control(p, control, mp->msg_control,
+ &mp->msg_controllen, &mp->msg_flags);
}
out:
if (fromsa)
FREE(fromsa, M_SONAME);
if (control)
m_freem(control);
- KERNEL_DEBUG(DBG_FNC_RECVIT | DBG_FUNC_END, error,0,0,0,0);
+ KERNEL_DEBUG(DBG_FNC_RECVIT | DBG_FUNC_END, error, 0, 0, 0, 0);
out1:
fp_drop(p, s, fp, 0);
return (error);
}
+/*
+ * Returns: 0 Success
+ * ENOMEM
+ * copyin:EFAULT
+ * recvit:???
+ * read:??? [4056224: applicable for pipes]
+ *
+ * Notes: The read entry point is only called as part of support for
+ * binary backward compatability; new code should use read
+ * instead of recv or recvfrom when attempting to read data
+ * from pipes.
+ *
+ * For full documentation of the return codes from recvit, see
+ * the block header for the recvit function.
+ */
+int
+recvfrom(struct proc *p, struct recvfrom_args *uap, int32_t *retval)
+{
+ __pthread_testcancel(1);
+ return (recvfrom_nocancel(p, (struct recvfrom_nocancel_args *)uap,
+ retval));
+}
int
-recvfrom(p, uap, retval)
- struct proc *p;
- register struct recvfrom_args /* {
- int s;
- caddr_t buf;
- size_t len;
- int flags;
- caddr_t from;
- int *fromlenaddr;
- } */ *uap;
- register_t *retval;
+recvfrom_nocancel(struct proc *p, struct recvfrom_nocancel_args *uap,
+ int32_t *retval)
{
struct user_msghdr msg;
int error;
uio_t auio = NULL;
- KERNEL_DEBUG(DBG_FNC_RECVFROM | DBG_FUNC_START, 0,0,0,0,0);
+ KERNEL_DEBUG(DBG_FNC_RECVFROM | DBG_FUNC_START, 0, 0, 0, 0, 0);
AUDIT_ARG(fd, uap->s);
if (uap->fromlenaddr) {
(caddr_t)&msg.msg_namelen, sizeof (msg.msg_namelen));
if (error)
return (error);
- } else
+ } else {
msg.msg_namelen = 0;
+ }
msg.msg_name = uap->from;
auio = uio_create(1, 0,
- (IS_64BIT_PROCESS(p) ? UIO_USERSPACE64 : UIO_USERSPACE32),
- UIO_READ);
+ (IS_64BIT_PROCESS(p) ? UIO_USERSPACE64 : UIO_USERSPACE32),
+ UIO_READ);
if (auio == NULL) {
return (ENOMEM);
}
-
+
uio_addiov(auio, uap->buf, uap->len);
/* no need to set up msg_iov. recvit uses uio_t we send it */
msg.msg_iov = 0;
if (auio != NULL) {
uio_free(auio);
}
-
-#if HACK_FOR_4056224
- /*
- * Radar 4056224
- * Temporary workaround to let send() and recv() work over a pipe for binary compatibility
- * This will be removed in the release following Tiger
- */
- if (error == ENOTSOCK && proc_is64bit(p) == 0) {
- struct fileproc *fp;
-
- if (fp_lookup(p, uap->s, &fp, 0) == 0) {
- (void) fp_drop(p, uap->s, fp,0);
-
- if (fp->f_type == DTYPE_PIPE) {
- struct read_args read_uap;
- user_ssize_t read_retval;
-
- if (p->p_pid > last_pid_4056224) {
- last_pid_4056224 = p->p_pid;
-
- printf("%s[%d] uses send/recv on a pipe\n",
- p->p_comm, p->p_pid);
- }
-
- bzero(&read_uap, sizeof(struct read_args));
- read_uap.fd = uap->s;
- read_uap.cbuf = uap->buf;
- read_uap.nbyte = uap->len;
-
- error = read(p, &read_uap, &read_retval);
- *retval = (int)read_retval;
- }
- }
- }
-#endif /* HACK_FOR_4056224 */
-
- KERNEL_DEBUG(DBG_FNC_RECVFROM | DBG_FUNC_END, error,0,0,0,0);
-
- return (error);
-}
-
-#if COMPAT_43_SOCKET
-int
-orecvfrom(struct proc *p, struct recvfrom_args *uap, register_t *retval)
-{
-
- uap->flags |= MSG_COMPAT;
- return (recvfrom(p, uap, retval));
-}
-#endif
-
-#if COMPAT_43_SOCKET
-int
-orecv(__unused struct proc *p, __unused struct orecv_args *uap,
- __unused register_t *retval)
-{
- /* these are no longer supported and in fact
- * there is no way to call it directly.
- * LP64todo - remove this once we're sure there are no clients
- */
+ KERNEL_DEBUG(DBG_FNC_RECVFROM | DBG_FUNC_END, error, 0, 0, 0, 0);
- return (ENOTSUP);
+ return (error);
}
/*
- * Old recvmsg. This code takes advantage of the fact that the old msghdr
- * overlays the new one, missing only the flags, and with the (old) access
- * rights where the control fields are now.
+ * Returns: 0 Success
+ * EMSGSIZE
+ * ENOMEM
+ * copyin:EFAULT
+ * copyout:EFAULT
+ * recvit:???
+ *
+ * Notes: For full documentation of the return codes from recvit, see
+ * the block header for the recvit function.
*/
int
-orecvmsg(__unused struct proc *p, __unused struct orecvmsg_args *uap,
- __unused register_t *retval)
+recvmsg(struct proc *p, struct recvmsg_args *uap, int32_t *retval)
{
- /* these are no longer supported and in fact
- * there is no way to call it directly.
- * LP64todo - remove this once we're sure there are no clients
- */
-
- return (ENOTSUP);
-
+ __pthread_testcancel(1);
+ return (recvmsg_nocancel(p, (struct recvmsg_nocancel_args *)uap,
+ retval));
}
-#endif
int
-recvmsg(p, uap, retval)
- struct proc *p;
- struct recvmsg_args *uap;
- register_t *retval;
+recvmsg_nocancel(struct proc *p, struct recvmsg_nocancel_args *uap,
+ int32_t *retval)
{
- struct msghdr msg;
+ struct user32_msghdr msg32;
+ struct user64_msghdr msg64;
struct user_msghdr user_msg;
caddr_t msghdrp;
int size_of_msghdr;
user_addr_t uiov;
- register int error;
- int size_of_iovec;
+ int error;
uio_t auio = NULL;
struct user_iovec *iovp;
- KERNEL_DEBUG(DBG_FNC_RECVMSG | DBG_FUNC_START, 0,0,0,0,0);
+ KERNEL_DEBUG(DBG_FNC_RECVMSG | DBG_FUNC_START, 0, 0, 0, 0, 0);
AUDIT_ARG(fd, uap->s);
if (IS_64BIT_PROCESS(p)) {
- msghdrp = (caddr_t) &user_msg;
- size_of_msghdr = sizeof(user_msg);
- size_of_iovec = sizeof(struct user_iovec);
- }
- else {
- msghdrp = (caddr_t) &msg;
- size_of_msghdr = sizeof(msg);
- size_of_iovec = sizeof(struct iovec);
+ msghdrp = (caddr_t)&msg64;
+ size_of_msghdr = sizeof (msg64);
+ } else {
+ msghdrp = (caddr_t)&msg32;
+ size_of_msghdr = sizeof (msg32);
}
error = copyin(uap->msg, msghdrp, size_of_msghdr);
- if (error)
- {
- KERNEL_DEBUG(DBG_FNC_RECVMSG | DBG_FUNC_END, error,0,0,0,0);
+ if (error) {
+ KERNEL_DEBUG(DBG_FNC_RECVMSG | DBG_FUNC_END, error, 0, 0, 0, 0);
return (error);
}
- /* only need to copy if user process is not 64-bit */
- if (!IS_64BIT_PROCESS(p)) {
- user_msg.msg_flags = msg.msg_flags;
- user_msg.msg_controllen = msg.msg_controllen;
- user_msg.msg_control = CAST_USER_ADDR_T(msg.msg_control);
- user_msg.msg_iovlen = msg.msg_iovlen;
- user_msg.msg_iov = CAST_USER_ADDR_T(msg.msg_iov);
- user_msg.msg_namelen = msg.msg_namelen;
- user_msg.msg_name = CAST_USER_ADDR_T(msg.msg_name);
- }
+ /* only need to copy if user process is not 64-bit */
+ if (IS_64BIT_PROCESS(p)) {
+ user_msg.msg_flags = msg64.msg_flags;
+ user_msg.msg_controllen = msg64.msg_controllen;
+ user_msg.msg_control = msg64.msg_control;
+ user_msg.msg_iovlen = msg64.msg_iovlen;
+ user_msg.msg_iov = msg64.msg_iov;
+ user_msg.msg_namelen = msg64.msg_namelen;
+ user_msg.msg_name = msg64.msg_name;
+ } else {
+ user_msg.msg_flags = msg32.msg_flags;
+ user_msg.msg_controllen = msg32.msg_controllen;
+ user_msg.msg_control = msg32.msg_control;
+ user_msg.msg_iovlen = msg32.msg_iovlen;
+ user_msg.msg_iov = msg32.msg_iov;
+ user_msg.msg_namelen = msg32.msg_namelen;
+ user_msg.msg_name = msg32.msg_name;
+ }
+
+ if (user_msg.msg_iovlen <= 0 || user_msg.msg_iovlen > UIO_MAXIOV) {
+ KERNEL_DEBUG(DBG_FNC_RECVMSG | DBG_FUNC_END, EMSGSIZE,
+ 0, 0, 0, 0);
+ return (EMSGSIZE);
+ }
+
+ user_msg.msg_flags = uap->flags;
+
+ /* allocate a uio large enough to hold the number of iovecs passed */
+ auio = uio_create(user_msg.msg_iovlen, 0,
+ (IS_64BIT_PROCESS(p) ? UIO_USERSPACE64 : UIO_USERSPACE32),
+ UIO_READ);
+ if (auio == NULL) {
+ error = ENOMEM;
+ goto done;
+ }
+
+ /*
+ * get location of iovecs within the uio. then copyin the iovecs from
+ * user space.
+ */
+ iovp = uio_iovsaddr(auio);
+ if (iovp == NULL) {
+ error = ENOMEM;
+ goto done;
+ }
+ uiov = user_msg.msg_iov;
+ user_msg.msg_iov = CAST_USER_ADDR_T(iovp);
+ error = copyin_user_iovec_array(uiov,
+ IS_64BIT_PROCESS(p) ? UIO_USERSPACE64 : UIO_USERSPACE32,
+ user_msg.msg_iovlen, iovp);
+ if (error)
+ goto done;
+
+ /* finish setup of uio_t */
+ error = uio_calculateresid(auio);
+ if (error) {
+ goto done;
+ }
+
+ error = recvit(p, uap->s, &user_msg, auio, 0, retval);
+ if (!error) {
+ user_msg.msg_iov = uiov;
+ if (IS_64BIT_PROCESS(p)) {
+ msg64.msg_flags = user_msg.msg_flags;
+ msg64.msg_controllen = user_msg.msg_controllen;
+ msg64.msg_control = user_msg.msg_control;
+ msg64.msg_iovlen = user_msg.msg_iovlen;
+ msg64.msg_iov = user_msg.msg_iov;
+ msg64.msg_namelen = user_msg.msg_namelen;
+ msg64.msg_name = user_msg.msg_name;
+ } else {
+ msg32.msg_flags = user_msg.msg_flags;
+ msg32.msg_controllen = user_msg.msg_controllen;
+ msg32.msg_control = user_msg.msg_control;
+ msg32.msg_iovlen = user_msg.msg_iovlen;
+ msg32.msg_iov = user_msg.msg_iov;
+ msg32.msg_namelen = user_msg.msg_namelen;
+ msg32.msg_name = user_msg.msg_name;
+ }
+ error = copyout(msghdrp, uap->msg, size_of_msghdr);
+ }
+done:
+ if (auio != NULL) {
+ uio_free(auio);
+ }
+ KERNEL_DEBUG(DBG_FNC_RECVMSG | DBG_FUNC_END, error, 0, 0, 0, 0);
+ return (error);
+}
+
+int
+recvmsg_x(struct proc *p, struct recvmsg_x_args *uap, user_ssize_t *retval)
+{
+ int error = EOPNOTSUPP;
+ struct user_msghdr_x *user_msg_x = NULL;
+ struct recv_msg_elem *recv_msg_array = NULL;
+ struct socket *so;
+ user_ssize_t len_before = 0, len_after;
+ int need_drop = 0;
+ size_t size_of_msghdr;
+ void *umsgp = NULL;
+ u_int i;
+ u_int uiocnt;
+
+ KERNEL_DEBUG(DBG_FNC_RECVMSG_X | DBG_FUNC_START, 0, 0, 0, 0, 0);
+
+ error = file_socket(uap->s, &so);
+ if (error) {
+ goto out;
+ }
+ need_drop = 1;
+ if (so == NULL) {
+ error = EBADF;
+ goto out;
+ }
+ /*
+ * Input parameter range check
+ */
+ if (uap->cnt == 0 || uap->cnt > UIO_MAXIOV) {
+ error = EINVAL;
+ goto out;
+ }
+ if (uap->cnt > somaxrecvmsgx)
+ uap->cnt = somaxrecvmsgx;
+
+ user_msg_x = _MALLOC(uap->cnt * sizeof(struct user_msghdr_x),
+ M_TEMP, M_WAITOK | M_ZERO);
+ if (user_msg_x == NULL) {
+ DBG_PRINTF("%s _MALLOC() user_msg_x failed\n", __func__);
+ error = ENOMEM;
+ goto out;
+ }
+ recv_msg_array = alloc_recv_msg_array(uap->cnt);
+ if (recv_msg_array == NULL) {
+ DBG_PRINTF("%s alloc_recv_msg_array() failed\n", __func__);
+ error = ENOMEM;
+ goto out;
+ }
+ size_of_msghdr = IS_64BIT_PROCESS(p) ?
+ sizeof(struct user64_msghdr_x) : sizeof(struct user32_msghdr_x);
+
+ umsgp = _MALLOC(uap->cnt * size_of_msghdr, M_TEMP, M_WAITOK | M_ZERO);
+ if (umsgp == NULL) {
+ DBG_PRINTF("%s _MALLOC() umsgp failed\n", __func__);
+ error = ENOMEM;
+ goto out;
+ }
+ error = copyin(uap->msgp, umsgp, uap->cnt * size_of_msghdr);
+ if (error) {
+ DBG_PRINTF("%s copyin() failed\n", __func__);
+ goto out;
+ }
+ error = internalize_recv_msghdr_array(umsgp,
+ IS_64BIT_PROCESS(p) ? UIO_USERSPACE64 : UIO_USERSPACE32,
+ UIO_READ, uap->cnt, user_msg_x, recv_msg_array);
+ if (error) {
+ DBG_PRINTF("%s copyin_user_msghdr_array() failed\n", __func__);
+ goto out;
+ }
+ /*
+ * Make sure the size of each message iovec and
+ * the aggregate size of all the iovec is valid
+ */
+ if (recv_msg_array_is_valid(recv_msg_array, uap->cnt) == 0) {
+ error = EINVAL;
+ goto out;
+ }
+ /*
+ * Sanity check on passed arguments
+ */
+ for (i = 0; i < uap->cnt; i++) {
+ struct user_msghdr_x *mp = user_msg_x + i;
+
+ if (mp->msg_flags != 0) {
+ error = EINVAL;
+ goto out;
+ }
+ }
+#if CONFIG_MACF_SOCKET_SUBSET
+ /*
+ * We check the state without holding the socket lock;
+ * if a race condition occurs, it would simply result
+ * in an extra call to the MAC check function.
+ */
+ if (!(so->so_state & SS_DEFUNCT) &&
+ !(so->so_state & SS_ISCONNECTED) &&
+ !(so->so_proto->pr_flags & PR_CONNREQUIRED) &&
+ (error = mac_socket_check_receive(kauth_cred_get(), so)) != 0)
+ goto out;
+#endif /* MAC_SOCKET_SUBSET */
+
+ len_before = recv_msg_array_resid(recv_msg_array, uap->cnt);
+
+ if (so->so_proto->pr_usrreqs->pru_soreceive_list !=
+ pru_soreceive_list_notsupp &&
+ somaxrecvmsgx == 0) {
+ error = so->so_proto->pr_usrreqs->pru_soreceive_list(so,
+ recv_msg_array, uap->cnt, &uap->flags);
+ } else {
+ int flags = uap->flags;
+
+ for (i = 0; i < uap->cnt; i++) {
+ struct recv_msg_elem *recv_msg_elem;
+ uio_t auio;
+ struct sockaddr **psa;
+ struct mbuf **controlp;
+
+ recv_msg_elem = recv_msg_array + i;
+ auio = recv_msg_elem->uio;
+
+ /*
+ * Do not block if we got at least one packet
+ */
+ if (i > 0)
+ flags |= MSG_DONTWAIT;
- if (user_msg.msg_iovlen <= 0 || user_msg.msg_iovlen > UIO_MAXIOV) {
- KERNEL_DEBUG(DBG_FNC_RECVMSG | DBG_FUNC_END, EMSGSIZE,0,0,0,0);
- return (EMSGSIZE);
+ psa = (recv_msg_elem->which & SOCK_MSG_SA) ?
+ &recv_msg_elem->psa : NULL;
+ controlp = (recv_msg_elem->which & SOCK_MSG_CONTROL) ?
+ &recv_msg_elem->controlp : NULL;
+
+ error = so->so_proto->pr_usrreqs->pru_soreceive(so, psa,
+ auio, (struct mbuf **)0, controlp, &flags);
+ if (error)
+ break;
+ /*
+ * We have some data
+ */
+ recv_msg_elem->which |= SOCK_MSG_DATA;
+ /*
+ * Stop on partial copy
+ */
+ if (flags & (MSG_RCVMORE | MSG_TRUNC))
+ break;
+ }
+ if ((uap->flags & MSG_DONTWAIT) == 0)
+ flags &= ~MSG_DONTWAIT;
+ uap->flags = flags;
}
-#if COMPAT_43_SOCKET
- user_msg.msg_flags = uap->flags &~ MSG_COMPAT;
-#else
- user_msg.msg_flags = uap->flags;
-#endif
+ len_after = recv_msg_array_resid(recv_msg_array, uap->cnt);
- /* allocate a uio large enough to hold the number of iovecs passed */
- auio = uio_create(user_msg.msg_iovlen, 0,
- (IS_64BIT_PROCESS(p) ? UIO_USERSPACE64 : UIO_USERSPACE32),
- UIO_READ);
- if (auio == NULL) {
- error = ENOMEM;
- goto done;
+ if (error) {
+ if (len_after != len_before && (error == ERESTART ||
+ error == EINTR || error == EWOULDBLOCK))
+ error = 0;
+ else
+ goto out;
}
- /* get location of iovecs within the uio. then copyin the iovecs from
- * user space.
- */
- iovp = uio_iovsaddr(auio);
- if (iovp == NULL) {
- error = ENOMEM;
- goto done;
+ uiocnt = externalize_recv_msghdr_array(umsgp,
+ IS_64BIT_PROCESS(p) ? UIO_USERSPACE64 : UIO_USERSPACE32,
+ UIO_READ, uap->cnt, user_msg_x, recv_msg_array);
+
+ error = copyout(umsgp, uap->msgp, uap->cnt * size_of_msghdr);
+ if (error) {
+ DBG_PRINTF("%s copyout() failed\n", __func__);
+ goto out;
}
- uiov = user_msg.msg_iov;
- user_msg.msg_iov = CAST_USER_ADDR_T(iovp);
- error = copyin(uiov, (caddr_t)iovp, (user_msg.msg_iovlen * size_of_iovec));
- if (error)
- goto done;
+ *retval = (int)(uiocnt);
- /* finish setup of uio_t */
- uio_calculateresid(auio);
-
- error = recvit(p, uap->s, &user_msg, auio, 0, retval);
- if (!error) {
- user_msg.msg_iov = uiov;
- /* only need to copy if user process is not 64-bit */
- if (!IS_64BIT_PROCESS(p)) {
- // LP64todo - do all these change? if not, then no need to copy all of them!
- msg.msg_flags = user_msg.msg_flags;
- msg.msg_controllen = user_msg.msg_controllen;
- msg.msg_control = CAST_DOWN(caddr_t, user_msg.msg_control);
- msg.msg_iovlen = user_msg.msg_iovlen;
- msg.msg_iov = (struct iovec *) CAST_DOWN(caddr_t, user_msg.msg_iov);
- msg.msg_namelen = user_msg.msg_namelen;
- msg.msg_name = CAST_DOWN(caddr_t, user_msg.msg_name);
+ for (i = 0; i < uap->cnt; i++) {
+ struct user_msghdr_x *mp = user_msg_x + i;
+ struct recv_msg_elem *recv_msg_elem = recv_msg_array + i;
+ struct sockaddr *fromsa = recv_msg_elem->psa;
+
+ if (mp->msg_name) {
+ error = copyout_sa(fromsa, mp->msg_name,
+ &mp->msg_namelen);
+ if (error)
+ goto out;
+ }
+ if (mp->msg_control) {
+ error = copyout_control(p, recv_msg_elem->controlp,
+ mp->msg_control, &mp->msg_controllen,
+ &mp->msg_flags);
+ if (error)
+ goto out;
}
- error = copyout(msghdrp, uap->msg, size_of_msghdr);
- }
-done:
- if (auio != NULL) {
- uio_free(auio);
}
- KERNEL_DEBUG(DBG_FNC_RECVMSG | DBG_FUNC_END, error,0,0,0,0);
+out:
+ if (need_drop)
+ file_drop(uap->s);
+ if (umsgp != NULL)
+ _FREE(umsgp, M_TEMP);
+ if (recv_msg_array != NULL)
+ free_recv_msg_array(recv_msg_array, uap->cnt);
+ if (user_msg_x != NULL)
+ _FREE(user_msg_x, M_TEMP);
+
+ KERNEL_DEBUG(DBG_FNC_RECVMSG_X | DBG_FUNC_END, error, 0, 0, 0, 0);
+
return (error);
}
+/*
+ * Returns: 0 Success
+ * EBADF
+ * file_socket:ENOTSOCK
+ * file_socket:EBADF
+ * soshutdown:EINVAL
+ * soshutdown:ENOTCONN
+ * soshutdown:EADDRNOTAVAIL[TCP]
+ * soshutdown:ENOBUFS[TCP]
+ * soshutdown:EMSGSIZE[TCP]
+ * soshutdown:EHOSTUNREACH[TCP]
+ * soshutdown:ENETUNREACH[TCP]
+ * soshutdown:ENETDOWN[TCP]
+ * soshutdown:ENOMEM[TCP]
+ * soshutdown:EACCES[TCP]
+ * soshutdown:EMSGSIZE[TCP]
+ * soshutdown:ENOBUFS[TCP]
+ * soshutdown:???[TCP] [ignorable: mostly IPSEC/firewall/DLIL]
+ * soshutdown:??? [other protocol families]
+ */
/* ARGSUSED */
int
-shutdown(__unused struct proc *p, struct shutdown_args *uap, __unused register_t *retval)
+shutdown(__unused struct proc *p, struct shutdown_args *uap,
+ __unused int32_t *retval)
{
- struct socket * so;
+ struct socket *so;
int error;
AUDIT_ARG(fd, uap->s);
error = soshutdown((struct socket *)so, uap->how);
out:
file_drop(uap->s);
- return(error);
+ return (error);
}
-
-
-
-
+/*
+ * Returns: 0 Success
+ * EFAULT
+ * EINVAL
+ * EACCES Mandatory Access Control failure
+ * file_socket:ENOTSOCK
+ * file_socket:EBADF
+ * sosetopt:EINVAL
+ * sosetopt:ENOPROTOOPT
+ * sosetopt:ENOBUFS
+ * sosetopt:EDOM
+ * sosetopt:EFAULT
+ * sosetopt:EOPNOTSUPP[AF_UNIX]
+ * sosetopt:???
+ */
/* ARGSUSED */
int
-setsockopt(struct proc *p, struct setsockopt_args *uap, __unused register_t *retval)
+setsockopt(struct proc *p, struct setsockopt_args *uap,
+ __unused int32_t *retval)
{
- struct socket * so;
+ struct socket *so;
struct sockopt sopt;
int error;
AUDIT_ARG(fd, uap->s);
if (uap->val == 0 && uap->valsize != 0)
return (EFAULT);
- if (uap->valsize < 0)
- return (EINVAL);
+ /* No bounds checking on size (it's unsigned) */
error = file_socket(uap->s, &so);
if (error)
error = EINVAL;
goto out;
}
- error = sosetopt(so, &sopt);
+#if CONFIG_MACF_SOCKET_SUBSET
+ if ((error = mac_socket_check_setsockopt(kauth_cred_get(), so,
+ &sopt)) != 0)
+ goto out;
+#endif /* MAC_SOCKET_SUBSET */
+ error = sosetoptlock(so, &sopt, 1); /* will lock socket */
out:
file_drop(uap->s);
- return(error);
+ return (error);
}
+/*
+ * Returns: 0 Success
+ * EINVAL
+ * EBADF
+ * EACCES Mandatory Access Control failure
+ * copyin:EFAULT
+ * copyout:EFAULT
+ * file_socket:ENOTSOCK
+ * file_socket:EBADF
+ * sogetopt:???
+ */
int
-getsockopt(struct proc *p, struct getsockopt_args *uap, __unused register_t *retval)
+getsockopt(struct proc *p, struct getsockopt_args *uap,
+ __unused int32_t *retval)
{
int error;
socklen_t valsize;
struct sockopt sopt;
- struct socket * so;
+ struct socket *so;
error = file_socket(uap->s, &so);
if (error)
return (error);
if (uap->val) {
- error = copyin(uap->avalsize, (caddr_t)&valsize, sizeof (valsize));
+ error = copyin(uap->avalsize, (caddr_t)&valsize,
+ sizeof (valsize));
if (error)
goto out;
- if (valsize < 0) {
- error = EINVAL;
- goto out;
- }
- } else
+ /* No bounds checking on size (it's unsigned) */
+ } else {
valsize = 0;
-
+ }
sopt.sopt_dir = SOPT_GET;
sopt.sopt_level = uap->level;
sopt.sopt_name = uap->name;
error = EBADF;
goto out;
}
- error = sogetopt((struct socket *)so, &sopt);
+#if CONFIG_MACF_SOCKET_SUBSET
+ if ((error = mac_socket_check_getsockopt(kauth_cred_get(), so,
+ &sopt)) != 0)
+ goto out;
+#endif /* MAC_SOCKET_SUBSET */
+ error = sogetoptlock((struct socket *)so, &sopt, 1); /* will lock */
if (error == 0) {
valsize = sopt.sopt_valsize;
- error = copyout((caddr_t)&valsize, uap->avalsize, sizeof (valsize));
+ error = copyout((caddr_t)&valsize, uap->avalsize,
+ sizeof (valsize));
}
out:
file_drop(uap->s);
/*
* Get socket name.
+ *
+ * Returns: 0 Success
+ * EBADF
+ * file_socket:ENOTSOCK
+ * file_socket:EBADF
+ * copyin:EFAULT
+ * copyout:EFAULT
+ * <pru_sockaddr>:ENOBUFS[TCP]
+ * <pru_sockaddr>:ECONNRESET[TCP]
+ * <pru_sockaddr>:EINVAL[AF_UNIX]
+ * <sf_getsockname>:???
*/
/* ARGSUSED */
-static int
-getsockname1(__unused struct proc *p, struct getsockname_args *uap, __unused register_t *retval,
- int compat)
+int
+getsockname(__unused struct proc *p, struct getsockname_args *uap,
+ __unused int32_t *retval)
{
struct socket *so;
struct sockaddr *sa;
socklen_t len;
+ socklen_t sa_len;
int error;
error = file_socket(uap->fdes, &so);
if (error)
return (error);
- error = copyin(uap->alen, (caddr_t)&len, sizeof(socklen_t));
+ error = copyin(uap->alen, (caddr_t)&len, sizeof (socklen_t));
if (error)
goto out;
if (so == NULL) {
sa = 0;
socket_lock(so, 1);
error = (*so->so_proto->pr_usrreqs->pru_sockaddr)(so, &sa);
- if (error == 0)
- {
- struct socket_filter_entry *filter;
- int filtered = 0;
- for (filter = so->so_filt; filter && error == 0;
- filter = filter->sfe_next_onsocket) {
- if (filter->sfe_filter->sf_filter.sf_getsockname) {
- if (!filtered) {
- filtered = 1;
- sflt_use(so);
- socket_unlock(so, 0);
- }
- error = filter->sfe_filter->sf_filter.sf_getsockname(filter->sfe_cookie,
- so, &sa);
- }
- }
-
+ if (error == 0) {
+ error = sflt_getsockname(so, &sa);
if (error == EJUSTRETURN)
error = 0;
-
- if (filtered) {
- socket_lock(so, 0);
- sflt_unuse(so);
- }
}
socket_unlock(so, 1);
if (error)
goto gotnothing;
}
- len = MIN(len, sa->sa_len);
-#if COMPAT_43_SOCKET
- if (compat)
- ((struct osockaddr *)sa)->sa_family = sa->sa_family;
-#endif
+ sa_len = sa->sa_len;
+ len = MIN(len, sa_len);
error = copyout((caddr_t)sa, uap->asa, len);
- if (error == 0)
+ if (error)
+ goto bad;
+ /* return the actual, untruncated address length */
+ len = sa_len;
gotnothing:
- error = copyout((caddr_t)&len, uap->alen, sizeof(socklen_t));
+ error = copyout((caddr_t)&len, uap->alen, sizeof (socklen_t));
bad:
if (sa)
FREE(sa, M_SONAME);
return (error);
}
-int
-getsockname(struct proc *p, struct getsockname_args *uap, register_t *retval)
-{
- return (getsockname1(p, uap, retval, 0));
-}
-
-#if COMPAT_43_SOCKET
-int
-ogetsockname(struct proc *p, struct getsockname_args *uap, register_t *retval)
-{
- return (getsockname1(p, uap, retval, 1));
-}
-#endif /* COMPAT_43_SOCKET */
-
/*
* Get name of peer for connected socket.
+ *
+ * Returns: 0 Success
+ * EBADF
+ * EINVAL
+ * ENOTCONN
+ * file_socket:ENOTSOCK
+ * file_socket:EBADF
+ * copyin:EFAULT
+ * copyout:EFAULT
+ * <pru_peeraddr>:???
+ * <sf_getpeername>:???
*/
/* ARGSUSED */
int
-getpeername1(__unused struct proc *p, struct getpeername_args *uap, __unused register_t *retval,
- int compat)
+getpeername(__unused struct proc *p, struct getpeername_args *uap,
+ __unused int32_t *retval)
{
struct socket *so;
struct sockaddr *sa;
socklen_t len;
+ socklen_t sa_len;
int error;
error = file_socket(uap->fdes, &so);
socket_lock(so, 1);
+ if ((so->so_state & (SS_CANTRCVMORE | SS_CANTSENDMORE)) ==
+ (SS_CANTRCVMORE | SS_CANTSENDMORE)) {
+ /* the socket has been shutdown, no more getpeername's */
+ socket_unlock(so, 1);
+ error = EINVAL;
+ goto out;
+ }
+
if ((so->so_state & (SS_ISCONNECTED|SS_ISCONFIRMING)) == 0) {
socket_unlock(so, 1);
error = ENOTCONN;
goto out;
}
- error = copyin(uap->alen, (caddr_t)&len, sizeof(socklen_t));
+ error = copyin(uap->alen, (caddr_t)&len, sizeof (socklen_t));
if (error) {
socket_unlock(so, 1);
goto out;
}
sa = 0;
error = (*so->so_proto->pr_usrreqs->pru_peeraddr)(so, &sa);
- if (error == 0)
- {
- struct socket_filter_entry *filter;
- int filtered = 0;
- for (filter = so->so_filt; filter && error == 0;
- filter = filter->sfe_next_onsocket) {
- if (filter->sfe_filter->sf_filter.sf_getpeername) {
- if (!filtered) {
- filtered = 1;
- sflt_use(so);
- socket_unlock(so, 0);
- }
- error = filter->sfe_filter->sf_filter.sf_getpeername(filter->sfe_cookie,
- so, &sa);
- }
- }
-
+ if (error == 0) {
+ error = sflt_getpeername(so, &sa);
if (error == EJUSTRETURN)
error = 0;
-
- if (filtered) {
- socket_lock(so, 0);
- sflt_unuse(so);
- }
}
socket_unlock(so, 1);
if (error)
len = 0;
goto gotnothing;
}
- len = MIN(len, sa->sa_len);
-#if COMPAT_43_SOCKET
- if (compat)
- ((struct osockaddr *)sa)->sa_family =
- sa->sa_family;
-#endif
- error = copyout(sa, uap->asa, len);
- if (error)
- goto bad;
-gotnothing:
- error = copyout((caddr_t)&len, uap->alen, sizeof(socklen_t));
-bad:
- if (sa) FREE(sa, M_SONAME);
-out:
- file_drop(uap->fdes);
+ sa_len = sa->sa_len;
+ len = MIN(len, sa_len);
+ error = copyout(sa, uap->asa, len);
+ if (error)
+ goto bad;
+ /* return the actual, untruncated address length */
+ len = sa_len;
+gotnothing:
+ error = copyout((caddr_t)&len, uap->alen, sizeof (socklen_t));
+bad:
+ if (sa) FREE(sa, M_SONAME);
+out:
+ file_drop(uap->fdes);
+ return (error);
+}
+
+int
+sockargs(struct mbuf **mp, user_addr_t data, int buflen, int type)
+{
+ struct sockaddr *sa;
+ struct mbuf *m;
+ int error;
+
+ size_t alloc_buflen = (size_t)buflen;
+
+ if (alloc_buflen > INT_MAX/2)
+ return (EINVAL);
+#ifdef __LP64__
+ /*
+ * The fd's in the buffer must expand to be pointers, thus we need twice
+ * as much space
+ */
+ if (type == MT_CONTROL)
+ alloc_buflen = ((buflen - sizeof(struct cmsghdr))*2) +
+ sizeof(struct cmsghdr);
+#endif
+ if (alloc_buflen > MLEN) {
+ if (type == MT_SONAME && alloc_buflen <= 112)
+ alloc_buflen = MLEN; /* unix domain compat. hack */
+ else if (alloc_buflen > MCLBYTES)
+ return (EINVAL);
+ }
+ m = m_get(M_WAIT, type);
+ if (m == NULL)
+ return (ENOBUFS);
+ if (alloc_buflen > MLEN) {
+ MCLGET(m, M_WAIT);
+ if ((m->m_flags & M_EXT) == 0) {
+ m_free(m);
+ return (ENOBUFS);
+ }
+ }
+ /*
+ * K64: We still copyin the original buflen because it gets expanded
+ * later and we lie about the size of the mbuf because it only affects
+ * unp_* functions
+ */
+ m->m_len = buflen;
+ error = copyin(data, mtod(m, caddr_t), (u_int)buflen);
+ if (error) {
+ (void) m_free(m);
+ } else {
+ *mp = m;
+ if (type == MT_SONAME) {
+ sa = mtod(m, struct sockaddr *);
+ sa->sa_len = buflen;
+ }
+ }
+ return (error);
+}
+
+/*
+ * Given a user_addr_t of length len, allocate and fill out a *sa.
+ *
+ * Returns: 0 Success
+ * ENAMETOOLONG Filename too long
+ * EINVAL Invalid argument
+ * ENOMEM Not enough space
+ * copyin:EFAULT Bad address
+ */
+static int
+getsockaddr(struct socket *so, struct sockaddr **namp, user_addr_t uaddr,
+ size_t len, boolean_t translate_unspec)
+{
+ struct sockaddr *sa;
+ int error;
+
+ if (len > SOCK_MAXADDRLEN)
+ return (ENAMETOOLONG);
+
+ if (len < offsetof(struct sockaddr, sa_data[0]))
+ return (EINVAL);
+
+ MALLOC(sa, struct sockaddr *, len, M_SONAME, M_WAITOK | M_ZERO);
+ if (sa == NULL) {
+ return (ENOMEM);
+ }
+ error = copyin(uaddr, (caddr_t)sa, len);
+ if (error) {
+ FREE(sa, M_SONAME);
+ } else {
+ /*
+ * Force sa_family to AF_INET on AF_INET sockets to handle
+ * legacy applications that use AF_UNSPEC (0). On all other
+ * sockets we leave it unchanged and let the lower layer
+ * handle it.
+ */
+ if (translate_unspec && sa->sa_family == AF_UNSPEC &&
+ SOCK_CHECK_DOM(so, PF_INET) &&
+ len == sizeof (struct sockaddr_in))
+ sa->sa_family = AF_INET;
+
+ sa->sa_len = len;
+ *namp = sa;
+ }
+ return (error);
+}
+
+static int
+getsockaddr_s(struct socket *so, struct sockaddr_storage *ss,
+ user_addr_t uaddr, size_t len, boolean_t translate_unspec)
+{
+ int error;
+
+ if (ss == NULL || uaddr == USER_ADDR_NULL ||
+ len < offsetof(struct sockaddr, sa_data[0]))
+ return (EINVAL);
+
+ /*
+ * sockaddr_storage size is less than SOCK_MAXADDRLEN,
+ * so the check here is inclusive.
+ */
+ if (len > sizeof (*ss))
+ return (ENAMETOOLONG);
+
+ bzero(ss, sizeof (*ss));
+ error = copyin(uaddr, (caddr_t)ss, len);
+ if (error == 0) {
+ /*
+ * Force sa_family to AF_INET on AF_INET sockets to handle
+ * legacy applications that use AF_UNSPEC (0). On all other
+ * sockets we leave it unchanged and let the lower layer
+ * handle it.
+ */
+ if (translate_unspec && ss->ss_family == AF_UNSPEC &&
+ SOCK_CHECK_DOM(so, PF_INET) &&
+ len == sizeof (struct sockaddr_in))
+ ss->ss_family = AF_INET;
+
+ ss->ss_len = len;
+ }
+ return (error);
+}
+
+int
+internalize_user_msghdr_array(const void *src, int spacetype, int direction,
+ u_int count, struct user_msghdr_x *dst, struct uio **uiop)
+{
+ int error = 0;
+ u_int i;
+ u_int namecnt = 0;
+ u_int ctlcnt = 0;
+
+ for (i = 0; i < count; i++) {
+ uio_t auio;
+ struct user_iovec *iovp;
+ struct user_msghdr_x *user_msg = dst + i;
+
+ if (spacetype == UIO_USERSPACE64) {
+ const struct user64_msghdr_x *msghdr64;
+
+ msghdr64 = ((const struct user64_msghdr_x *)src) + i;
+
+ user_msg->msg_name = msghdr64->msg_name;
+ user_msg->msg_namelen = msghdr64->msg_namelen;
+ user_msg->msg_iov = msghdr64->msg_iov;
+ user_msg->msg_iovlen = msghdr64->msg_iovlen;
+ user_msg->msg_control = msghdr64->msg_control;
+ user_msg->msg_controllen = msghdr64->msg_controllen;
+ user_msg->msg_flags = msghdr64->msg_flags;
+ user_msg->msg_datalen = msghdr64->msg_datalen;
+ } else {
+ const struct user32_msghdr_x *msghdr32;
+
+ msghdr32 = ((const struct user32_msghdr_x *)src) + i;
+
+ user_msg->msg_name = msghdr32->msg_name;
+ user_msg->msg_namelen = msghdr32->msg_namelen;
+ user_msg->msg_iov = msghdr32->msg_iov;
+ user_msg->msg_iovlen = msghdr32->msg_iovlen;
+ user_msg->msg_control = msghdr32->msg_control;
+ user_msg->msg_controllen = msghdr32->msg_controllen;
+ user_msg->msg_flags = msghdr32->msg_flags;
+ user_msg->msg_datalen = msghdr32->msg_datalen;
+ }
+
+ if (user_msg->msg_iovlen <= 0 ||
+ user_msg->msg_iovlen > UIO_MAXIOV) {
+ error = EMSGSIZE;
+ goto done;
+ }
+ auio = uio_create(user_msg->msg_iovlen, 0, spacetype,
+ direction);
+ if (auio == NULL) {
+ error = ENOMEM;
+ goto done;
+ }
+ uiop[i] = auio;
+
+ iovp = uio_iovsaddr(auio);
+ if (iovp == NULL) {
+ error = ENOMEM;
+ goto done;
+ }
+ error = copyin_user_iovec_array(user_msg->msg_iov,
+ spacetype, user_msg->msg_iovlen, iovp);
+ if (error)
+ goto done;
+ user_msg->msg_iov = CAST_USER_ADDR_T(iovp);
+
+ error = uio_calculateresid(auio);
+ if (error)
+ goto done;
+ user_msg->msg_datalen = uio_resid(auio);
+
+ if (user_msg->msg_name && user_msg->msg_namelen)
+ namecnt++;
+ if (user_msg->msg_control && user_msg->msg_controllen)
+ ctlcnt++;
+ }
+done:
+
+ return (error);
+}
+
+int
+internalize_recv_msghdr_array(const void *src, int spacetype, int direction,
+ u_int count, struct user_msghdr_x *dst,
+ struct recv_msg_elem *recv_msg_array)
+{
+ int error = 0;
+ u_int i;
+
+ for (i = 0; i < count; i++) {
+ struct user_iovec *iovp;
+ struct user_msghdr_x *user_msg = dst + i;
+ struct recv_msg_elem *recv_msg_elem = recv_msg_array + i;
+
+ if (spacetype == UIO_USERSPACE64) {
+ const struct user64_msghdr_x *msghdr64;
+
+ msghdr64 = ((const struct user64_msghdr_x *)src) + i;
+
+ user_msg->msg_name = msghdr64->msg_name;
+ user_msg->msg_namelen = msghdr64->msg_namelen;
+ user_msg->msg_iov = msghdr64->msg_iov;
+ user_msg->msg_iovlen = msghdr64->msg_iovlen;
+ user_msg->msg_control = msghdr64->msg_control;
+ user_msg->msg_controllen = msghdr64->msg_controllen;
+ user_msg->msg_flags = msghdr64->msg_flags;
+ user_msg->msg_datalen = msghdr64->msg_datalen;
+ } else {
+ const struct user32_msghdr_x *msghdr32;
+
+ msghdr32 = ((const struct user32_msghdr_x *)src) + i;
+
+ user_msg->msg_name = msghdr32->msg_name;
+ user_msg->msg_namelen = msghdr32->msg_namelen;
+ user_msg->msg_iov = msghdr32->msg_iov;
+ user_msg->msg_iovlen = msghdr32->msg_iovlen;
+ user_msg->msg_control = msghdr32->msg_control;
+ user_msg->msg_controllen = msghdr32->msg_controllen;
+ user_msg->msg_flags = msghdr32->msg_flags;
+ user_msg->msg_datalen = msghdr32->msg_datalen;
+ }
+
+ if (user_msg->msg_iovlen <= 0 ||
+ user_msg->msg_iovlen > UIO_MAXIOV) {
+ error = EMSGSIZE;
+ goto done;
+ }
+ recv_msg_elem->uio = uio_create(user_msg->msg_iovlen, 0,
+ spacetype, direction);
+ if (recv_msg_elem->uio == NULL) {
+ error = ENOMEM;
+ goto done;
+ }
+
+ iovp = uio_iovsaddr(recv_msg_elem->uio);
+ if (iovp == NULL) {
+ error = ENOMEM;
+ goto done;
+ }
+ error = copyin_user_iovec_array(user_msg->msg_iov,
+ spacetype, user_msg->msg_iovlen, iovp);
+ if (error)
+ goto done;
+ user_msg->msg_iov = CAST_USER_ADDR_T(iovp);
+
+ error = uio_calculateresid(recv_msg_elem->uio);
+ if (error)
+ goto done;
+ user_msg->msg_datalen = uio_resid(recv_msg_elem->uio);
+
+ if (user_msg->msg_name && user_msg->msg_namelen)
+ recv_msg_elem->which |= SOCK_MSG_SA;
+ if (user_msg->msg_control && user_msg->msg_controllen)
+ recv_msg_elem->which |= SOCK_MSG_CONTROL;
+ }
+done:
+
return (error);
}
-int
-getpeername(struct proc *p, struct getpeername_args *uap, register_t *retval)
+u_int
+externalize_user_msghdr_array(void *dst, int spacetype, int direction,
+ u_int count, const struct user_msghdr_x *src, struct uio **uiop)
{
+#pragma unused(direction)
+ u_int i;
+ int seenlast = 0;
+ u_int retcnt = 0;
+
+ for (i = 0; i < count; i++) {
+ const struct user_msghdr_x *user_msg = src + i;
+ uio_t auio = uiop[i];
+ user_ssize_t len = user_msg->msg_datalen - uio_resid(auio);
+
+ if (user_msg->msg_datalen != 0 && len == 0)
+ seenlast = 1;
+
+ if (seenlast == 0)
+ retcnt ++;
- return (getpeername1(p, uap, retval, 0));
+ if (spacetype == UIO_USERSPACE64) {
+ struct user64_msghdr_x *msghdr64;
+
+ msghdr64 = ((struct user64_msghdr_x *)dst) + i;
+
+ msghdr64->msg_flags = user_msg->msg_flags;
+ msghdr64->msg_datalen = len;
+
+ } else {
+ struct user32_msghdr_x *msghdr32;
+
+ msghdr32 = ((struct user32_msghdr_x *)dst) + i;
+
+ msghdr32->msg_flags = user_msg->msg_flags;
+ msghdr32->msg_datalen = len;
+ }
+ }
+ return (retcnt);
}
-#if COMPAT_43_SOCKET
-int
-ogetpeername(struct proc *p, struct getpeername_args *uap, register_t *retval)
+u_int
+externalize_recv_msghdr_array(void *dst, int spacetype, int direction,
+ u_int count, const struct user_msghdr_x *src,
+ struct recv_msg_elem *recv_msg_array)
{
+ u_int i;
+ int seenlast = 0;
+ u_int retcnt = 0;
+
+ for (i = 0; i < count; i++) {
+ const struct user_msghdr_x *user_msg = src + i;
+ struct recv_msg_elem *recv_msg_elem = recv_msg_array + i;
+ user_ssize_t len;
+
+ len = user_msg->msg_datalen - uio_resid(recv_msg_elem->uio);
+
+ if (direction == UIO_READ) {
+ if ((recv_msg_elem->which & SOCK_MSG_DATA) == 0)
+ seenlast = 1;
+ } else {
+ if (user_msg->msg_datalen != 0 && len == 0)
+ seenlast = 1;
+ }
+
+ if (seenlast == 0)
+ retcnt ++;
+
+ if (spacetype == UIO_USERSPACE64) {
+ struct user64_msghdr_x *msghdr64;
- return (getpeername1(p, uap, retval, 1));
+ msghdr64 = ((struct user64_msghdr_x *)dst) + i;
+
+ msghdr64->msg_flags = user_msg->msg_flags;
+ msghdr64->msg_datalen = len;
+
+ } else {
+ struct user32_msghdr_x *msghdr32;
+
+ msghdr32 = ((struct user32_msghdr_x *)dst) + i;
+
+ msghdr32->msg_flags = user_msg->msg_flags;
+ msghdr32->msg_datalen = len;
+ }
+ }
+ return (retcnt);
}
-#endif /* COMPAT_43_SOCKET */
-int
-sockargs(mp, data, buflen, type)
- struct mbuf **mp;
- user_addr_t data;
- int buflen, type;
+void
+free_uio_array(struct uio **uiop, u_int count)
{
- register struct sockaddr *sa;
- register struct mbuf *m;
- int error;
+ u_int i;
- if ((u_int)buflen > MLEN) {
-#if COMPAT_43_SOCKET
- if (type == MT_SONAME && (u_int)buflen <= 112)
- buflen = MLEN; /* unix domain compat. hack */
- else
-#endif
- if ((u_int)buflen > MCLBYTES)
- return (EINVAL);
- }
- m = m_get(M_WAIT, type);
- if (m == NULL)
- return (ENOBUFS);
- if ((u_int)buflen > MLEN) {
- MCLGET(m, M_WAIT);
- if ((m->m_flags & M_EXT) == 0) {
- m_free(m);
- return ENOBUFS;
- }
+ for (i = 0; i < count; i++) {
+ if (uiop[i] != NULL)
+ uio_free(uiop[i]);
}
- m->m_len = buflen;
- error = copyin(data, mtod(m, caddr_t), (u_int)buflen);
- if (error)
- (void) m_free(m);
- else {
- *mp = m;
- if (type == MT_SONAME) {
- sa = mtod(m, struct sockaddr *);
+}
-#if COMPAT_43_SOCKET && BYTE_ORDER != BIG_ENDIAN
- if (sa->sa_family == 0 && sa->sa_len < AF_MAX)
- sa->sa_family = sa->sa_len;
-#endif
- sa->sa_len = buflen;
- }
+__private_extern__ user_ssize_t
+uio_array_resid(struct uio **uiop, u_int count)
+{
+ user_ssize_t len = 0;
+ u_int i;
+
+ for (i = 0; i < count; i++) {
+ struct uio *auio = uiop[i];
+
+ if (auio != NULL)
+ len += uio_resid(auio);
}
- return (error);
+ return (len);
}
-/*
- * Given a user_addr_t of length len, allocate and fill out a *sa.
- */
int
-getsockaddr(struct sockaddr **namp, user_addr_t uaddr, size_t len)
+uio_array_is_valid(struct uio **uiop, u_int count)
{
- struct sockaddr *sa;
- int error;
+ user_ssize_t len = 0;
+ u_int i;
- if (len > SOCK_MAXADDRLEN)
- return ENAMETOOLONG;
+ for (i = 0; i < count; i++) {
+ struct uio *auio = uiop[i];
- if (len == 0)
- return EINVAL;
+ if (auio != NULL) {
+ user_ssize_t resid = uio_resid(auio);
- MALLOC(sa, struct sockaddr *, len, M_SONAME, M_WAITOK);
- if (sa == NULL) {
- return ENOMEM;
- }
- error = copyin(uaddr, (caddr_t)sa, len);
- if (error) {
- FREE(sa, M_SONAME);
- } else {
-#if COMPAT_43_SOCKET && BYTE_ORDER != BIG_ENDIAN
- if (sa->sa_family == 0 && sa->sa_len < AF_MAX)
- sa->sa_family = sa->sa_len;
-#endif
- sa->sa_len = len;
- *namp = sa;
+ /*
+ * Sanity check on the validity of the iovec:
+ * no point of going over sb_max
+ */
+ if (resid < 0 || (u_int32_t)resid > sb_max)
+ return (0);
+
+ len += resid;
+ if (len < 0 || (u_int32_t)len > sb_max)
+ return (0);
+ }
}
- return error;
+ return (1);
}
-#if SENDFILE
-/*
- * Allocate a pool of sf_bufs (sendfile(2) or "super-fast" if you prefer. :-))
- * XXX - The sf_buf functions are currently private to sendfile(2), so have
- * been made static, but may be useful in the future for doing zero-copy in
- * other parts of the networking code.
- */
-static void
-sf_buf_init(void *arg)
+struct recv_msg_elem *
+alloc_recv_msg_array(u_int count)
+{
+ struct recv_msg_elem *recv_msg_array;
+
+ recv_msg_array = _MALLOC(count * sizeof(struct recv_msg_elem),
+ M_TEMP, M_WAITOK | M_ZERO);
+
+ return (recv_msg_array);
+}
+
+void
+free_recv_msg_array(struct recv_msg_elem *recv_msg_array, u_int count)
{
- int i;
+ u_int i;
- SLIST_INIT(&sf_freelist);
- kmem_alloc_pageable(kernel_map, &sf_base, nsfbufs * PAGE_SIZE);
- MALLOC(sf_bufs, struct sf_buf *, nsfbufs * sizeof(struct sf_buf), M_TEMP, M_NOWAIT|M_ZERO);
- if (sf_bufs == NULL)
- return; /* XXX silently fail leaving sf_bufs NULL */
+ for (i = 0; i < count; i++) {
+ struct recv_msg_elem *recv_msg_elem = recv_msg_array + i;
- for (i = 0; i < nsfbufs; i++) {
- sf_bufs[i].kva = sf_base + i * PAGE_SIZE;
- SLIST_INSERT_HEAD(&sf_freelist, &sf_bufs[i], free_list);
+ if (recv_msg_elem->uio != NULL)
+ uio_free(recv_msg_elem->uio);
+ if (recv_msg_elem->psa != NULL)
+ _FREE(recv_msg_elem->psa, M_TEMP);
+ if (recv_msg_elem->controlp != NULL)
+ m_freem(recv_msg_elem->controlp);
}
+ _FREE(recv_msg_array, M_TEMP);
}
-/*
- * Get an sf_buf from the freelist. Will block if none are available.
- */
-static struct sf_buf *
-sf_buf_alloc()
+
+__private_extern__ user_ssize_t
+recv_msg_array_resid(struct recv_msg_elem *recv_msg_array, u_int count)
{
- struct sf_buf *sf;
+ user_ssize_t len = 0;
+ u_int i;
- while ((sf = SLIST_FIRST(&sf_freelist)) == NULL) {
- sf_buf_alloc_want = 1;
- tsleep(&sf_freelist, PVM, "sfbufa", 0);
+ for (i = 0; i < count; i++) {
+ struct recv_msg_elem *recv_msg_elem = recv_msg_array + i;
+
+ if (recv_msg_elem->uio != NULL)
+ len += uio_resid(recv_msg_elem->uio);
}
- SLIST_REMOVE_HEAD(&sf_freelist, free_list);
- sf->refcnt = 1;
- return (sf);
+ return (len);
}
-#define dtosf(x) (&sf_bufs[((uintptr_t)(x) - (uintptr_t)sf_base) >> PAGE_SHIFT])
-static void
-sf_buf_ref(caddr_t addr, u_int size)
+int
+recv_msg_array_is_valid(struct recv_msg_elem *recv_msg_array, u_int count)
{
- struct sf_buf *sf;
+ user_ssize_t len = 0;
+ u_int i;
+
+ for (i = 0; i < count; i++) {
+ struct recv_msg_elem *recv_msg_elem = recv_msg_array + i;
+
+ if (recv_msg_elem->uio != NULL) {
+ user_ssize_t resid = uio_resid(recv_msg_elem->uio);
+
+ /*
+ * Sanity check on the validity of the iovec:
+ * no point of going over sb_max
+ */
+ if (resid < 0 || (u_int32_t)resid > sb_max)
+ return (0);
- sf = dtosf(addr);
- if (sf->refcnt == 0)
- panic("sf_buf_ref: referencing a free sf_buf");
- sf->refcnt++;
+ len += resid;
+ if (len < 0 || (u_int32_t)len > sb_max)
+ return (0);
+ }
+ }
+ return (1);
}
-/*
- * Lose a reference to an sf_buf. When none left, detach mapped page
- * and release resources back to the system.
- *
- * Must be called at splimp.
- */
+#if SENDFILE
+
+#define SFUIOBUFS 64
+
+/* Macros to compute the number of mbufs needed depending on cluster size */
+#define HOWMANY_16K(n) ((((unsigned int)(n) - 1) >> M16KCLSHIFT) + 1)
+#define HOWMANY_4K(n) ((((unsigned int)(n) - 1) >> MBIGCLSHIFT) + 1)
+
+/* Upper send limit in bytes (SFUIOBUFS * PAGESIZE) */
+#define SENDFILE_MAX_BYTES (SFUIOBUFS << PGSHIFT)
+
+/* Upper send limit in the number of mbuf clusters */
+#define SENDFILE_MAX_16K HOWMANY_16K(SENDFILE_MAX_BYTES)
+#define SENDFILE_MAX_4K HOWMANY_4K(SENDFILE_MAX_BYTES)
+
static void
-sf_buf_free(caddr_t addr, u_int size)
+alloc_sendpkt(int how, size_t pktlen, unsigned int *maxchunks,
+ struct mbuf **m, boolean_t jumbocl)
{
- struct sf_buf *sf;
- struct vm_page *m;
-
- sf = dtosf(addr);
- if (sf->refcnt == 0)
- panic("sf_buf_free: freeing free sf_buf");
- sf->refcnt--;
- if (sf->refcnt == 0) {
- pmap_qremove((vm_offset_t)addr, 1);
- m = sf->m;
- vm_page_unwire(m, 0);
- /*
- * Check for the object going away on us. This can
- * happen since we don't hold a reference to it.
- * If so, we're responsible for freeing the page.
- */
- if (m->wire_count == 0 && m->object == NULL)
- vm_page_lock_queues();
- vm_page_free(m);
- vm_page_unlock_queues();
- sf->m = NULL;
- SLIST_INSERT_HEAD(&sf_freelist, sf, free_list);
- if (sf_buf_alloc_want) {
- sf_buf_alloc_want = 0;
- wakeup(&sf_freelist);
- }
+ unsigned int needed;
+
+ if (pktlen == 0)
+ panic("%s: pktlen (%ld) must be non-zero\n", __func__, pktlen);
+
+ /*
+ * Try to allocate for the whole thing. Since we want full control
+ * over the buffer size and be able to accept partial result, we can't
+ * use mbuf_allocpacket(). The logic below is similar to sosend().
+ */
+ *m = NULL;
+ if (pktlen > MBIGCLBYTES && jumbocl) {
+ needed = MIN(SENDFILE_MAX_16K, HOWMANY_16K(pktlen));
+ *m = m_getpackets_internal(&needed, 1, how, 0, M16KCLBYTES);
+ }
+ if (*m == NULL) {
+ needed = MIN(SENDFILE_MAX_4K, HOWMANY_4K(pktlen));
+ *m = m_getpackets_internal(&needed, 1, how, 0, MBIGCLBYTES);
+ }
+
+ /*
+ * Our previous attempt(s) at allocation had failed; the system
+ * may be short on mbufs, and we want to block until they are
+ * available. This time, ask just for 1 mbuf and don't return
+ * until we get it.
+ */
+ if (*m == NULL) {
+ needed = 1;
+ *m = m_getpackets_internal(&needed, 1, M_WAIT, 1, MBIGCLBYTES);
}
+ if (*m == NULL)
+ panic("%s: blocking allocation returned NULL\n", __func__);
+
+ *maxchunks = needed;
}
/*
* sendfile(2).
- * int sendfile(int fd, int s, off_t offset, size_t nbytes,
- * struct sf_hdtr *hdtr, off_t *sbytes, int flags)
+ * int sendfile(int fd, int s, off_t offset, off_t *nbytes,
+ * struct sf_hdtr *hdtr, int flags)
*
* Send a file specified by 'fd' and starting at 'offset' to a socket
- * specified by 's'. Send only 'nbytes' of the file or until EOF if
- * nbytes == 0. Optionally add a header and/or trailer to the socket
- * output. If specified, write the total number of bytes sent into *sbytes.
+ * specified by 's'. Send only '*nbytes' of the file or until EOF if
+ * *nbytes == 0. Optionally add a header and/or trailer to the socket
+ * output. If specified, write the total number of bytes sent into *nbytes.
*/
int
-sendfile(struct proc *p, struct sendfile_args *uap)
+sendfile(struct proc *p, struct sendfile_args *uap, __unused int *retval)
{
struct fileproc *fp;
struct vnode *vp;
- struct vm_object *obj;
struct socket *so;
- struct mbuf *m;
- struct sf_buf *sf;
- struct vm_page *pg;
- struct writev_args nuap;
- struct sf_hdtr hdtr;
- off_t off, xfsize, sbytes = 0;
- int error = 0, s;
-
- if (sf_bufs == NULL) {
- /* Fail if initialization failed */
- return ENOSYS;
- }
+ struct writev_nocancel_args nuap;
+ user_ssize_t writev_retval;
+ struct user_sf_hdtr user_hdtr;
+ struct user32_sf_hdtr user32_hdtr;
+ struct user64_sf_hdtr user64_hdtr;
+ off_t off, xfsize;
+ off_t nbytes = 0, sbytes = 0;
+ int error = 0;
+ size_t sizeof_hdtr;
+ off_t file_size;
+ struct vfs_context context = *vfs_context_current();
+
+ KERNEL_DEBUG_CONSTANT((DBG_FNC_SENDFILE | DBG_FUNC_START), uap->s,
+ 0, 0, 0, 0);
+
+ AUDIT_ARG(fd, uap->fd);
+ AUDIT_ARG(value32, uap->s);
/*
* Do argument checking. Must be a regular file in, stream
* type and connected socket out, positive offset.
*/
- if (error = fp_getfvp(p, uap->fd, &fp, &vp))
+ if ((error = fp_getfvp(p, uap->fd, &fp, &vp))) {
goto done;
- if (fp->f_flag & FREAD) == 0) {
+ }
+ if ((fp->f_flag & FREAD) == 0) {
error = EBADF;
goto done1;
}
- obj = vp->v_object;
- if (vp->v_type != VREG || obj == NULL) {
- error = EINVAL;
+ if (vnode_isreg(vp) == 0) {
+ error = ENOTSUP;
goto done1;
}
error = file_socket(uap->s, &so);
- if (error)
+ if (error) {
goto done1;
+ }
if (so == NULL) {
error = EBADF;
goto done2;
}
-
- socket_lock(so, 1);
-
if (so->so_type != SOCK_STREAM) {
error = EINVAL;
- goto done3;
+ goto done2;
}
if ((so->so_state & SS_ISCONNECTED) == 0) {
error = ENOTCONN;
- goto done3;
+ goto done2;
}
if (uap->offset < 0) {
error = EINVAL;
- goto done3;
+ goto done2;
+ }
+ if (uap->nbytes == USER_ADDR_NULL) {
+ error = EINVAL;
+ goto done2;
+ }
+ if (uap->flags != 0) {
+ error = EINVAL;
+ goto done2;
}
+ context.vc_ucred = fp->f_fglob->fg_cred;
+
+#if CONFIG_MACF_SOCKET_SUBSET
+ /* JMM - fetch connected sockaddr? */
+ error = mac_socket_check_send(context.vc_ucred, so, NULL);
+ if (error)
+ goto done2;
+#endif
+
+ /*
+ * Get number of bytes to send
+ * Should it applies to size of header and trailer?
+ * JMM - error handling?
+ */
+ copyin(uap->nbytes, &nbytes, sizeof (off_t));
+
/*
* If specified, get the pointer to the sf_hdtr struct for
* any headers/trailers.
*/
- if (uap->hdtr != NULL) {
- error = copyin(CAST_USER_ADDR_T(uap->hdtr), &hdtr, sizeof(hdtr));
+ if (uap->hdtr != USER_ADDR_NULL) {
+ caddr_t hdtrp;
+
+ bzero(&user_hdtr, sizeof (user_hdtr));
+ if (IS_64BIT_PROCESS(p)) {
+ hdtrp = (caddr_t)&user64_hdtr;
+ sizeof_hdtr = sizeof (user64_hdtr);
+ } else {
+ hdtrp = (caddr_t)&user32_hdtr;
+ sizeof_hdtr = sizeof (user32_hdtr);
+ }
+ error = copyin(uap->hdtr, hdtrp, sizeof_hdtr);
if (error)
- goto done3;
+ goto done2;
+ if (IS_64BIT_PROCESS(p)) {
+ user_hdtr.headers = user64_hdtr.headers;
+ user_hdtr.hdr_cnt = user64_hdtr.hdr_cnt;
+ user_hdtr.trailers = user64_hdtr.trailers;
+ user_hdtr.trl_cnt = user64_hdtr.trl_cnt;
+ } else {
+ user_hdtr.headers = user32_hdtr.headers;
+ user_hdtr.hdr_cnt = user32_hdtr.hdr_cnt;
+ user_hdtr.trailers = user32_hdtr.trailers;
+ user_hdtr.trl_cnt = user32_hdtr.trl_cnt;
+ }
+
/*
* Send any headers. Wimp out and use writev(2).
*/
- if (hdtr.headers != NULL) {
+ if (user_hdtr.headers != USER_ADDR_NULL) {
+ bzero(&nuap, sizeof (struct writev_args));
nuap.fd = uap->s;
- nuap.iovp = hdtr.headers;
- nuap.iovcnt = hdtr.hdr_cnt;
- error = writev(p, &nuap);
- if (error)
- goto done3;
- sbytes += p->p_retval[0];
+ nuap.iovp = user_hdtr.headers;
+ nuap.iovcnt = user_hdtr.hdr_cnt;
+ error = writev_nocancel(p, &nuap, &writev_retval);
+ if (error) {
+ goto done2;
+ }
+ sbytes += writev_retval;
}
}
/*
- * Protect against multiple writers to the socket.
+ * Get the file size for 2 reasons:
+ * 1. We don't want to allocate more mbufs than necessary
+ * 2. We don't want to read past the end of file
*/
- (void) sblock(&so->so_snd, M_WAIT);
+ if ((error = vnode_size(vp, &file_size, vfs_context_current())) != 0) {
+ goto done2;
+ }
/*
- * Loop through the pages in the file, starting with the requested
- * offset. Get a file page (do I/O if necessary), map the file page
- * into an sf_buf, attach an mbuf header to the sf_buf, and queue
- * it on the socket.
+ * Simply read file data into a chain of mbufs that used with scatter
+ * gather reads. We're not (yet?) setup to use zero copy external
+ * mbufs that point to the file pages.
*/
+ socket_lock(so, 1);
+ error = sblock(&so->so_snd, SBL_WAIT);
+ if (error) {
+ socket_unlock(so, 1);
+ goto done2;
+ }
for (off = uap->offset; ; off += xfsize, sbytes += xfsize) {
- vm_object_offset_t pindex;
- vm_object_offset_t pgoff;
+ mbuf_t m0 = NULL, m;
+ unsigned int nbufs = SFUIOBUFS, i;
+ uio_t auio;
+ char uio_buf[UIO_SIZEOF(SFUIOBUFS)]; /* 1 KB !!! */
+ size_t uiolen;
+ user_ssize_t rlen;
+ off_t pgoff;
+ size_t pktlen;
+ boolean_t jumbocl;
- pindex = OFF_TO_IDX(off);
-retry_lookup:
/*
- * Calculate the amount to transfer. Not to exceed a page,
+ * Calculate the amount to transfer.
+ * Align to round number of pages.
+ * Not to exceed send socket buffer,
* the EOF, or the passed in nbytes.
*/
- xfsize = obj->un_pager.vnp.vnp_size - off;
- if (xfsize > PAGE_SIZE_64)
- xfsize = PAGE_SIZE;
- pgoff = (vm_object_offset_t)(off & PAGE_MASK_64);
- if (PAGE_SIZE - pgoff < xfsize)
+ xfsize = sbspace(&so->so_snd);
+
+ if (xfsize <= 0) {
+ if (so->so_state & SS_CANTSENDMORE) {
+ error = EPIPE;
+ goto done3;
+ } else if ((so->so_state & SS_NBIO)) {
+ error = EAGAIN;
+ goto done3;
+ } else {
+ xfsize = PAGE_SIZE;
+ }
+ }
+
+ if (xfsize > SENDFILE_MAX_BYTES)
+ xfsize = SENDFILE_MAX_BYTES;
+ else if (xfsize > PAGE_SIZE)
+ xfsize = trunc_page(xfsize);
+ pgoff = off & PAGE_MASK_64;
+ if (pgoff > 0 && PAGE_SIZE - pgoff < xfsize)
xfsize = PAGE_SIZE_64 - pgoff;
- if (uap->nbytes && xfsize > (uap->nbytes - sbytes))
- xfsize = uap->nbytes - sbytes;
+ if (nbytes && xfsize > (nbytes - sbytes))
+ xfsize = nbytes - sbytes;
if (xfsize <= 0)
break;
+ if (off + xfsize > file_size)
+ xfsize = file_size - off;
+ if (xfsize <= 0)
+ break;
+
/*
- * Optimize the non-blocking case by looking at the socket space
- * before going to the extra work of constituting the sf_buf.
+ * Attempt to use larger than system page-size clusters for
+ * large writes only if there is a jumbo cluster pool and
+ * if the socket is marked accordingly.
*/
- if ((so->so_state & SS_NBIO) && sbspace(&so->so_snd) <= 0) {
- if (so->so_state & SS_CANTSENDMORE)
- error = EPIPE;
- else
- error = EAGAIN;
- sbunlock(&so->so_snd, 0); /* will release lock */
- goto done2;
+ jumbocl = sosendjcl && njcl > 0 &&
+ ((so->so_flags & SOF_MULTIPAGES) || sosendjcl_ignore_capab);
+
+ socket_unlock(so, 0);
+ alloc_sendpkt(M_WAIT, xfsize, &nbufs, &m0, jumbocl);
+ pktlen = mbuf_pkthdr_maxlen(m0);
+ if (pktlen < (size_t)xfsize)
+ xfsize = pktlen;
+
+ auio = uio_createwithbuffer(nbufs, off, UIO_SYSSPACE,
+ UIO_READ, &uio_buf[0], sizeof (uio_buf));
+ if (auio == NULL) {
+ printf("sendfile failed. nbufs = %d. %s", nbufs,
+ "File a radar related to rdar://10146739.\n");
+ mbuf_freem(m0);
+ error = ENXIO;
+ socket_lock(so, 0);
+ goto done3;
}
- /*
- * Attempt to look up the page. If the page doesn't exist or the
- * part we're interested in isn't valid, then read it from disk.
- * If some other part of the kernel has this page (i.e. it's busy),
- * then disk I/O may be occuring on it, so wait and retry.
- */
- pg = vm_page_lookup(obj, pindex);
- if (pg == NULL || (!(pg->flags & PG_BUSY) && !pg->busy &&
- !vm_page_is_valid(pg, pgoff, xfsize))) {
- struct uio auio;
- struct iovec aiov;
- int bsize;
-
- if (pg == NULL) {
- pg = vm_page_alloc(obj, pindex, VM_ALLOC_NORMAL);
- if (pg == NULL) {
- VM_WAIT;
- goto retry_lookup;
- }
- /*
- * don't just clear PG_BUSY manually -
- * vm_page_alloc() should be considered opaque,
- * use the VM routine provided to clear
- * PG_BUSY.
- */
- vm_page_wakeup(pg);
+ for (i = 0, m = m0, uiolen = 0;
+ i < nbufs && m != NULL && uiolen < (size_t)xfsize;
+ i++, m = mbuf_next(m)) {
+ size_t mlen = mbuf_maxlen(m);
+
+ if (mlen + uiolen > (size_t)xfsize)
+ mlen = xfsize - uiolen;
+ mbuf_setlen(m, mlen);
+ uio_addiov(auio, CAST_USER_ADDR_T(mbuf_datastart(m)),
+ mlen);
+ uiolen += mlen;
+ }
+
+ if (xfsize != uio_resid(auio))
+ printf("sendfile: xfsize: %lld != uio_resid(auio): "
+ "%lld\n", xfsize, (long long)uio_resid(auio));
+
+ KERNEL_DEBUG_CONSTANT((DBG_FNC_SENDFILE_READ | DBG_FUNC_START),
+ uap->s, (unsigned int)((xfsize >> 32) & 0x0ffffffff),
+ (unsigned int)(xfsize & 0x0ffffffff), 0, 0);
+ error = fo_read(fp, auio, FOF_OFFSET, &context);
+ socket_lock(so, 0);
+ if (error != 0) {
+ if (uio_resid(auio) != xfsize && (error == ERESTART ||
+ error == EINTR || error == EWOULDBLOCK)) {
+ error = 0;
+ } else {
+ mbuf_freem(m0);
+ goto done3;
}
- /*
- * Ensure that our page is still around when the I/O completes.
- */
- vm_page_io_start(pg);
- vm_page_wire(pg);
- /*
- * Get the page from backing store.
- */
- bsize = vp->v_mount->mnt_vfsstat.f_iosize;
- auio.uio_iov = &aiov;
- auio.uio_iovcnt = 1;
- aiov.iov_base = 0;
- aiov.iov_len = MAXBSIZE;
- auio.uio_offset = trunc_page(off);
- auio.uio_segflg = UIO_NOCOPY;
- auio.uio_rw = UIO_READ;
- uio_setresid(&auio, MAXBSIZE);
- error = VOP_READ(vp, &auio, IO_VMIO | ((MAXBSIZE / bsize) << 16),
- p->p_ucred);
- vm_page_flag_clear(pg, PG_ZERO);
- vm_page_io_finish(pg);
- if (error) {
- vm_page_unwire(pg, 0);
- /*
- * See if anyone else might know about this page.
- * If not and it is not valid, then free it.
- */
- if (pg->wire_count == 0 && pg->valid == 0 &&
- pg->busy == 0 && !(pg->flags & PG_BUSY) &&
- pg->hold_count == 0)
- vm_page_lock_queues();
- vm_page_free(pg);
- vm_page_unlock_queues();
- sbunlock(&so->so_snd, 0); /* will release socket lock */
- goto done2;
- }
- } else {
- if ((pg->flags & PG_BUSY) || pg->busy) {
- s = splvm();
- if ((pg->flags & PG_BUSY) || pg->busy) {
- /*
- * Page is busy. Wait and retry.
- */
- vm_page_flag_set(pg, PG_WANTED);
- tsleep(pg, PVM, "sfpbsy", 0);
- goto retry_lookup;
- }
- }
- /*
- * Protect from having the page ripped out from beneath us.
- */
- vm_page_wire(pg);
}
- /*
- * Allocate a kernel virtual page and insert the physical page
- * into it.
- */
- sf = sf_buf_alloc();
- sf->m = pg;
- pmap_qenter(sf->kva, &pg, 1);
- /*
- * Get an mbuf header and set it up as having external storage.
- */
- MGETHDR(m, M_WAIT, MT_DATA);
- if (m == NULL) {
- error = ENOBUFS;
- sbunlock(&so->so_snd, 0); /* will release socket lock */
- goto done2;
+ xfsize -= uio_resid(auio);
+ KERNEL_DEBUG_CONSTANT((DBG_FNC_SENDFILE_READ | DBG_FUNC_END),
+ uap->s, (unsigned int)((xfsize >> 32) & 0x0ffffffff),
+ (unsigned int)(xfsize & 0x0ffffffff), 0, 0);
+
+ if (xfsize == 0) {
+ // printf("sendfile: fo_read 0 bytes, EOF\n");
+ break;
}
- m->m_ext.ext_free = sf_buf_free;
- m->m_ext.ext_ref = sf_buf_ref;
- m->m_ext.ext_buf = (void *)sf->kva;
- m->m_ext.ext_size = PAGE_SIZE;
- m->m_data = (char *) sf->kva + pgoff;
- m->m_flags |= M_EXT;
- m->m_pkthdr.len = m->m_len = xfsize;
- /*
- * Add the buffer to the socket buffer chain.
- */
+ if (xfsize + off > file_size)
+ printf("sendfile: xfsize: %lld + off: %lld > file_size:"
+ "%lld\n", xfsize, off, file_size);
+ for (i = 0, m = m0, rlen = 0;
+ i < nbufs && m != NULL && rlen < xfsize;
+ i++, m = mbuf_next(m)) {
+ size_t mlen = mbuf_maxlen(m);
+
+ if (rlen + mlen > (size_t)xfsize)
+ mlen = xfsize - rlen;
+ mbuf_setlen(m, mlen);
+
+ rlen += mlen;
+ }
+ mbuf_pkthdr_setlen(m0, xfsize);
+
retry_space:
/*
* Make sure that the socket is still able to take more data.
error = so->so_error;
so->so_error = 0;
}
- m_freem(m);
- sbunlock(&so->so_snd, 0); /* will release socket lock */
- goto done2;
+ m_freem(m0);
+ goto done3;
}
/*
* Wait for socket space to become available. We do this just
* after checking the connection state above in order to avoid
* a race condition with sbwait().
*/
- if (sbspace(&so->so_snd) < so->so_snd.sb_lowat) {
+ if (sbspace(&so->so_snd) < (long)so->so_snd.sb_lowat) {
if (so->so_state & SS_NBIO) {
- m_freem(m);
- sbunlock(&so->so_snd, 0); /* will release socket lock */
+ m_freem(m0);
error = EAGAIN;
- goto done2;
+ goto done3;
}
+ KERNEL_DEBUG_CONSTANT((DBG_FNC_SENDFILE_WAIT |
+ DBG_FUNC_START), uap->s, 0, 0, 0, 0);
error = sbwait(&so->so_snd);
+ KERNEL_DEBUG_CONSTANT((DBG_FNC_SENDFILE_WAIT|
+ DBG_FUNC_END), uap->s, 0, 0, 0, 0);
/*
* An error from sbwait usually indicates that we've
* been interrupted by a signal. If we've sent anything
* then return bytes sent, otherwise return the error.
*/
if (error) {
- m_freem(m);
- sbunlock(&so->so_snd, 0);
- goto done2;
+ m_freem(m0);
+ goto done3;
}
goto retry_space;
}
- error = (*so->so_proto->pr_usrreqs->pru_send)(so, 0, m, 0, 0, p);
- splx(s);
+
+ struct mbuf *control = NULL;
+ {
+ /*
+ * Socket filter processing
+ */
+
+ error = sflt_data_out(so, NULL, &m0, &control, 0);
+ if (error) {
+ if (error == EJUSTRETURN) {
+ error = 0;
+ continue;
+ }
+ goto done3;
+ }
+ /*
+ * End Socket filter processing
+ */
+ }
+ KERNEL_DEBUG_CONSTANT((DBG_FNC_SENDFILE_SEND | DBG_FUNC_START),
+ uap->s, 0, 0, 0, 0);
+ error = (*so->so_proto->pr_usrreqs->pru_send)(so, 0, m0,
+ 0, control, p);
+ KERNEL_DEBUG_CONSTANT((DBG_FNC_SENDFILE_SEND | DBG_FUNC_START),
+ uap->s, 0, 0, 0, 0);
if (error) {
- sbunlock(&so->so_snd, 0); /* will release socket lock */
- goto done2;
+ goto done3;
}
}
- sbunlock(&so->so_snd, 0); /* will release socket lock */
-
+ sbunlock(&so->so_snd, FALSE); /* will unlock socket */
/*
* Send trailers. Wimp out and use writev(2).
*/
- if (uap->hdtr != NULL && hdtr.trailers != NULL) {
- nuap.fd = uap->s;
- nuap.iovp = hdtr.trailers;
- nuap.iovcnt = hdtr.trl_cnt;
- error = writev(p, &nuap);
- if (error)
- goto done2;
- sbytes += p->p_retval[0];
+ if (uap->hdtr != USER_ADDR_NULL &&
+ user_hdtr.trailers != USER_ADDR_NULL) {
+ bzero(&nuap, sizeof (struct writev_args));
+ nuap.fd = uap->s;
+ nuap.iovp = user_hdtr.trailers;
+ nuap.iovcnt = user_hdtr.trl_cnt;
+ error = writev_nocancel(p, &nuap, &writev_retval);
+ if (error) {
+ goto done2;
+ }
+ sbytes += writev_retval;
}
done2:
file_drop(uap->s);
done1:
file_drop(uap->fd);
done:
- if (uap->sbytes != NULL) {
+ if (uap->nbytes != USER_ADDR_NULL) {
/* XXX this appears bogus for some early failure conditions */
- copyout(&sbytes, CAST_USER_ADDR_T(uap->sbytes), sizeof(off_t));
+ copyout(&sbytes, uap->nbytes, sizeof (off_t));
}
+ KERNEL_DEBUG_CONSTANT((DBG_FNC_SENDFILE | DBG_FUNC_END), uap->s,
+ (unsigned int)((sbytes >> 32) & 0x0ffffffff),
+ (unsigned int)(sbytes & 0x0ffffffff), error, 0);
return (error);
done3:
- socket_unlock(so, 1);
+ sbunlock(&so->so_snd, FALSE); /* will unlock socket */
goto done2;
}
-#endif
+
+#endif /* SENDFILE */
projects / apple / xnu.git / blobdiff