diff options
Diffstat (limited to 'net/unix/af_unix.c')
-rw-r--r-- | net/unix/af_unix.c | 200 |
1 files changed, 100 insertions, 100 deletions
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c index b152e2b9b988..c6250d0055d2 100644 --- a/net/unix/af_unix.c +++ b/net/unix/af_unix.c | |||
@@ -164,7 +164,7 @@ static inline int unix_our_peer(struct sock *sk, struct sock *osk) | |||
164 | 164 | ||
165 | static inline int unix_may_send(struct sock *sk, struct sock *osk) | 165 | static inline int unix_may_send(struct sock *sk, struct sock *osk) |
166 | { | 166 | { |
167 | return (unix_peer(osk) == NULL || unix_our_peer(sk, osk)); | 167 | return unix_peer(osk) == NULL || unix_our_peer(sk, osk); |
168 | } | 168 | } |
169 | 169 | ||
170 | static inline int unix_recvq_full(struct sock const *sk) | 170 | static inline int unix_recvq_full(struct sock const *sk) |
@@ -197,7 +197,7 @@ static inline void unix_release_addr(struct unix_address *addr) | |||
197 | * - if started by zero, it is abstract name. | 197 | * - if started by zero, it is abstract name. |
198 | */ | 198 | */ |
199 | 199 | ||
200 | static int unix_mkname(struct sockaddr_un * sunaddr, int len, unsigned *hashp) | 200 | static int unix_mkname(struct sockaddr_un *sunaddr, int len, unsigned *hashp) |
201 | { | 201 | { |
202 | if (len <= sizeof(short) || len > sizeof(*sunaddr)) | 202 | if (len <= sizeof(short) || len > sizeof(*sunaddr)) |
203 | return -EINVAL; | 203 | return -EINVAL; |
@@ -211,12 +211,12 @@ static int unix_mkname(struct sockaddr_un * sunaddr, int len, unsigned *hashp) | |||
211 | * we are guaranteed that it is a valid memory location in our | 211 | * we are guaranteed that it is a valid memory location in our |
212 | * kernel address buffer. | 212 | * kernel address buffer. |
213 | */ | 213 | */ |
214 | ((char *)sunaddr)[len]=0; | 214 | ((char *)sunaddr)[len] = 0; |
215 | len = strlen(sunaddr->sun_path)+1+sizeof(short); | 215 | len = strlen(sunaddr->sun_path)+1+sizeof(short); |
216 | return len; | 216 | return len; |
217 | } | 217 | } |
218 | 218 | ||
219 | *hashp = unix_hash_fold(csum_partial((char*)sunaddr, len, 0)); | 219 | *hashp = unix_hash_fold(csum_partial(sunaddr, len, 0)); |
220 | return len; | 220 | return len; |
221 | } | 221 | } |
222 | 222 | ||
@@ -295,8 +295,7 @@ static struct sock *unix_find_socket_byinode(struct net *net, struct inode *i) | |||
295 | if (!net_eq(sock_net(s), net)) | 295 | if (!net_eq(sock_net(s), net)) |
296 | continue; | 296 | continue; |
297 | 297 | ||
298 | if(dentry && dentry->d_inode == i) | 298 | if (dentry && dentry->d_inode == i) { |
299 | { | ||
300 | sock_hold(s); | 299 | sock_hold(s); |
301 | goto found; | 300 | goto found; |
302 | } | 301 | } |
@@ -354,7 +353,7 @@ static void unix_sock_destructor(struct sock *sk) | |||
354 | WARN_ON(!sk_unhashed(sk)); | 353 | WARN_ON(!sk_unhashed(sk)); |
355 | WARN_ON(sk->sk_socket); | 354 | WARN_ON(sk->sk_socket); |
356 | if (!sock_flag(sk, SOCK_DEAD)) { | 355 | if (!sock_flag(sk, SOCK_DEAD)) { |
357 | printk("Attempt to release alive unix socket: %p\n", sk); | 356 | printk(KERN_INFO "Attempt to release alive unix socket: %p\n", sk); |
358 | return; | 357 | return; |
359 | } | 358 | } |
360 | 359 | ||
@@ -362,12 +361,16 @@ static void unix_sock_destructor(struct sock *sk) | |||
362 | unix_release_addr(u->addr); | 361 | unix_release_addr(u->addr); |
363 | 362 | ||
364 | atomic_dec(&unix_nr_socks); | 363 | atomic_dec(&unix_nr_socks); |
364 | local_bh_disable(); | ||
365 | sock_prot_inuse_add(sock_net(sk), sk->sk_prot, -1); | ||
366 | local_bh_enable(); | ||
365 | #ifdef UNIX_REFCNT_DEBUG | 367 | #ifdef UNIX_REFCNT_DEBUG |
366 | printk(KERN_DEBUG "UNIX %p is destroyed, %d are still alive.\n", sk, atomic_read(&unix_nr_socks)); | 368 | printk(KERN_DEBUG "UNIX %p is destroyed, %d are still alive.\n", sk, |
369 | atomic_read(&unix_nr_socks)); | ||
367 | #endif | 370 | #endif |
368 | } | 371 | } |
369 | 372 | ||
370 | static int unix_release_sock (struct sock *sk, int embrion) | 373 | static int unix_release_sock(struct sock *sk, int embrion) |
371 | { | 374 | { |
372 | struct unix_sock *u = unix_sk(sk); | 375 | struct unix_sock *u = unix_sk(sk); |
373 | struct dentry *dentry; | 376 | struct dentry *dentry; |
@@ -392,9 +395,9 @@ static int unix_release_sock (struct sock *sk, int embrion) | |||
392 | 395 | ||
393 | wake_up_interruptible_all(&u->peer_wait); | 396 | wake_up_interruptible_all(&u->peer_wait); |
394 | 397 | ||
395 | skpair=unix_peer(sk); | 398 | skpair = unix_peer(sk); |
396 | 399 | ||
397 | if (skpair!=NULL) { | 400 | if (skpair != NULL) { |
398 | if (sk->sk_type == SOCK_STREAM || sk->sk_type == SOCK_SEQPACKET) { | 401 | if (sk->sk_type == SOCK_STREAM || sk->sk_type == SOCK_SEQPACKET) { |
399 | unix_state_lock(skpair); | 402 | unix_state_lock(skpair); |
400 | /* No more writes */ | 403 | /* No more writes */ |
@@ -414,7 +417,7 @@ static int unix_release_sock (struct sock *sk, int embrion) | |||
414 | /* Try to flush out this socket. Throw out buffers at least */ | 417 | /* Try to flush out this socket. Throw out buffers at least */ |
415 | 418 | ||
416 | while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) { | 419 | while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) { |
417 | if (state==TCP_LISTEN) | 420 | if (state == TCP_LISTEN) |
418 | unix_release_sock(skb->sk, 1); | 421 | unix_release_sock(skb->sk, 1); |
419 | /* passed fds are erased in the kfree_skb hook */ | 422 | /* passed fds are erased in the kfree_skb hook */ |
420 | kfree_skb(skb); | 423 | kfree_skb(skb); |
@@ -453,11 +456,11 @@ static int unix_listen(struct socket *sock, int backlog) | |||
453 | struct unix_sock *u = unix_sk(sk); | 456 | struct unix_sock *u = unix_sk(sk); |
454 | 457 | ||
455 | err = -EOPNOTSUPP; | 458 | err = -EOPNOTSUPP; |
456 | if (sock->type!=SOCK_STREAM && sock->type!=SOCK_SEQPACKET) | 459 | if (sock->type != SOCK_STREAM && sock->type != SOCK_SEQPACKET) |
457 | goto out; /* Only stream/seqpacket sockets accept */ | 460 | goto out; /* Only stream/seqpacket sockets accept */ |
458 | err = -EINVAL; | 461 | err = -EINVAL; |
459 | if (!u->addr) | 462 | if (!u->addr) |
460 | goto out; /* No listens on an unbound socket */ | 463 | goto out; /* No listens on an unbound socket */ |
461 | unix_state_lock(sk); | 464 | unix_state_lock(sk); |
462 | if (sk->sk_state != TCP_CLOSE && sk->sk_state != TCP_LISTEN) | 465 | if (sk->sk_state != TCP_CLOSE && sk->sk_state != TCP_LISTEN) |
463 | goto out_unlock; | 466 | goto out_unlock; |
@@ -565,9 +568,9 @@ static const struct proto_ops unix_seqpacket_ops = { | |||
565 | }; | 568 | }; |
566 | 569 | ||
567 | static struct proto unix_proto = { | 570 | static struct proto unix_proto = { |
568 | .name = "UNIX", | 571 | .name = "UNIX", |
569 | .owner = THIS_MODULE, | 572 | .owner = THIS_MODULE, |
570 | .obj_size = sizeof(struct unix_sock), | 573 | .obj_size = sizeof(struct unix_sock), |
571 | }; | 574 | }; |
572 | 575 | ||
573 | /* | 576 | /* |
@@ -578,7 +581,7 @@ static struct proto unix_proto = { | |||
578 | */ | 581 | */ |
579 | static struct lock_class_key af_unix_sk_receive_queue_lock_key; | 582 | static struct lock_class_key af_unix_sk_receive_queue_lock_key; |
580 | 583 | ||
581 | static struct sock * unix_create1(struct net *net, struct socket *sock) | 584 | static struct sock *unix_create1(struct net *net, struct socket *sock) |
582 | { | 585 | { |
583 | struct sock *sk = NULL; | 586 | struct sock *sk = NULL; |
584 | struct unix_sock *u; | 587 | struct unix_sock *u; |
@@ -591,7 +594,7 @@ static struct sock * unix_create1(struct net *net, struct socket *sock) | |||
591 | if (!sk) | 594 | if (!sk) |
592 | goto out; | 595 | goto out; |
593 | 596 | ||
594 | sock_init_data(sock,sk); | 597 | sock_init_data(sock, sk); |
595 | lockdep_set_class(&sk->sk_receive_queue.lock, | 598 | lockdep_set_class(&sk->sk_receive_queue.lock, |
596 | &af_unix_sk_receive_queue_lock_key); | 599 | &af_unix_sk_receive_queue_lock_key); |
597 | 600 | ||
@@ -610,6 +613,11 @@ static struct sock * unix_create1(struct net *net, struct socket *sock) | |||
610 | out: | 613 | out: |
611 | if (sk == NULL) | 614 | if (sk == NULL) |
612 | atomic_dec(&unix_nr_socks); | 615 | atomic_dec(&unix_nr_socks); |
616 | else { | ||
617 | local_bh_disable(); | ||
618 | sock_prot_inuse_add(sock_net(sk), sk->sk_prot, 1); | ||
619 | local_bh_enable(); | ||
620 | } | ||
613 | return sk; | 621 | return sk; |
614 | } | 622 | } |
615 | 623 | ||
@@ -629,7 +637,7 @@ static int unix_create(struct net *net, struct socket *sock, int protocol) | |||
629 | * nothing uses it. | 637 | * nothing uses it. |
630 | */ | 638 | */ |
631 | case SOCK_RAW: | 639 | case SOCK_RAW: |
632 | sock->type=SOCK_DGRAM; | 640 | sock->type = SOCK_DGRAM; |
633 | case SOCK_DGRAM: | 641 | case SOCK_DGRAM: |
634 | sock->ops = &unix_dgram_ops; | 642 | sock->ops = &unix_dgram_ops; |
635 | break; | 643 | break; |
@@ -652,7 +660,7 @@ static int unix_release(struct socket *sock) | |||
652 | 660 | ||
653 | sock->sk = NULL; | 661 | sock->sk = NULL; |
654 | 662 | ||
655 | return unix_release_sock (sk, 0); | 663 | return unix_release_sock(sk, 0); |
656 | } | 664 | } |
657 | 665 | ||
658 | static int unix_autobind(struct socket *sock) | 666 | static int unix_autobind(struct socket *sock) |
@@ -661,7 +669,7 @@ static int unix_autobind(struct socket *sock) | |||
661 | struct net *net = sock_net(sk); | 669 | struct net *net = sock_net(sk); |
662 | struct unix_sock *u = unix_sk(sk); | 670 | struct unix_sock *u = unix_sk(sk); |
663 | static u32 ordernum = 1; | 671 | static u32 ordernum = 1; |
664 | struct unix_address * addr; | 672 | struct unix_address *addr; |
665 | int err; | 673 | int err; |
666 | 674 | ||
667 | mutex_lock(&u->readlock); | 675 | mutex_lock(&u->readlock); |
@@ -680,7 +688,7 @@ static int unix_autobind(struct socket *sock) | |||
680 | 688 | ||
681 | retry: | 689 | retry: |
682 | addr->len = sprintf(addr->name->sun_path+1, "%05x", ordernum) + 1 + sizeof(short); | 690 | addr->len = sprintf(addr->name->sun_path+1, "%05x", ordernum) + 1 + sizeof(short); |
683 | addr->hash = unix_hash_fold(csum_partial((void*)addr->name, addr->len, 0)); | 691 | addr->hash = unix_hash_fold(csum_partial(addr->name, addr->len, 0)); |
684 | 692 | ||
685 | spin_lock(&unix_table_lock); | 693 | spin_lock(&unix_table_lock); |
686 | ordernum = (ordernum+1)&0xFFFFF; | 694 | ordernum = (ordernum+1)&0xFFFFF; |
@@ -735,14 +743,14 @@ static struct sock *unix_find_other(struct net *net, | |||
735 | 743 | ||
736 | path_put(&path); | 744 | path_put(&path); |
737 | 745 | ||
738 | err=-EPROTOTYPE; | 746 | err = -EPROTOTYPE; |
739 | if (u->sk_type != type) { | 747 | if (u->sk_type != type) { |
740 | sock_put(u); | 748 | sock_put(u); |
741 | goto fail; | 749 | goto fail; |
742 | } | 750 | } |
743 | } else { | 751 | } else { |
744 | err = -ECONNREFUSED; | 752 | err = -ECONNREFUSED; |
745 | u=unix_find_socket_byname(net, sunname, len, type, hash); | 753 | u = unix_find_socket_byname(net, sunname, len, type, hash); |
746 | if (u) { | 754 | if (u) { |
747 | struct dentry *dentry; | 755 | struct dentry *dentry; |
748 | dentry = unix_sk(u)->dentry; | 756 | dentry = unix_sk(u)->dentry; |
@@ -756,7 +764,7 @@ static struct sock *unix_find_other(struct net *net, | |||
756 | put_fail: | 764 | put_fail: |
757 | path_put(&path); | 765 | path_put(&path); |
758 | fail: | 766 | fail: |
759 | *error=err; | 767 | *error = err; |
760 | return NULL; | 768 | return NULL; |
761 | } | 769 | } |
762 | 770 | ||
@@ -766,8 +774,8 @@ static int unix_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) | |||
766 | struct sock *sk = sock->sk; | 774 | struct sock *sk = sock->sk; |
767 | struct net *net = sock_net(sk); | 775 | struct net *net = sock_net(sk); |
768 | struct unix_sock *u = unix_sk(sk); | 776 | struct unix_sock *u = unix_sk(sk); |
769 | struct sockaddr_un *sunaddr=(struct sockaddr_un *)uaddr; | 777 | struct sockaddr_un *sunaddr = (struct sockaddr_un *)uaddr; |
770 | struct dentry * dentry = NULL; | 778 | struct dentry *dentry = NULL; |
771 | struct nameidata nd; | 779 | struct nameidata nd; |
772 | int err; | 780 | int err; |
773 | unsigned hash; | 781 | unsigned hash; |
@@ -778,7 +786,7 @@ static int unix_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) | |||
778 | if (sunaddr->sun_family != AF_UNIX) | 786 | if (sunaddr->sun_family != AF_UNIX) |
779 | goto out; | 787 | goto out; |
780 | 788 | ||
781 | if (addr_len==sizeof(short)) { | 789 | if (addr_len == sizeof(short)) { |
782 | err = unix_autobind(sock); | 790 | err = unix_autobind(sock); |
783 | goto out; | 791 | goto out; |
784 | } | 792 | } |
@@ -874,8 +882,8 @@ out_mknod_unlock: | |||
874 | mutex_unlock(&nd.path.dentry->d_inode->i_mutex); | 882 | mutex_unlock(&nd.path.dentry->d_inode->i_mutex); |
875 | path_put(&nd.path); | 883 | path_put(&nd.path); |
876 | out_mknod_parent: | 884 | out_mknod_parent: |
877 | if (err==-EEXIST) | 885 | if (err == -EEXIST) |
878 | err=-EADDRINUSE; | 886 | err = -EADDRINUSE; |
879 | unix_release_addr(addr); | 887 | unix_release_addr(addr); |
880 | goto out_up; | 888 | goto out_up; |
881 | } | 889 | } |
@@ -910,7 +918,7 @@ static int unix_dgram_connect(struct socket *sock, struct sockaddr *addr, | |||
910 | { | 918 | { |
911 | struct sock *sk = sock->sk; | 919 | struct sock *sk = sock->sk; |
912 | struct net *net = sock_net(sk); | 920 | struct net *net = sock_net(sk); |
913 | struct sockaddr_un *sunaddr=(struct sockaddr_un*)addr; | 921 | struct sockaddr_un *sunaddr = (struct sockaddr_un *)addr; |
914 | struct sock *other; | 922 | struct sock *other; |
915 | unsigned hash; | 923 | unsigned hash; |
916 | int err; | 924 | int err; |
@@ -926,7 +934,7 @@ static int unix_dgram_connect(struct socket *sock, struct sockaddr *addr, | |||
926 | goto out; | 934 | goto out; |
927 | 935 | ||
928 | restart: | 936 | restart: |
929 | other=unix_find_other(net, sunaddr, alen, sock->type, hash, &err); | 937 | other = unix_find_other(net, sunaddr, alen, sock->type, hash, &err); |
930 | if (!other) | 938 | if (!other) |
931 | goto out; | 939 | goto out; |
932 | 940 | ||
@@ -960,14 +968,14 @@ restart: | |||
960 | */ | 968 | */ |
961 | if (unix_peer(sk)) { | 969 | if (unix_peer(sk)) { |
962 | struct sock *old_peer = unix_peer(sk); | 970 | struct sock *old_peer = unix_peer(sk); |
963 | unix_peer(sk)=other; | 971 | unix_peer(sk) = other; |
964 | unix_state_double_unlock(sk, other); | 972 | unix_state_double_unlock(sk, other); |
965 | 973 | ||
966 | if (other != old_peer) | 974 | if (other != old_peer) |
967 | unix_dgram_disconnected(sk, old_peer); | 975 | unix_dgram_disconnected(sk, old_peer); |
968 | sock_put(old_peer); | 976 | sock_put(old_peer); |
969 | } else { | 977 | } else { |
970 | unix_peer(sk)=other; | 978 | unix_peer(sk) = other; |
971 | unix_state_double_unlock(sk, other); | 979 | unix_state_double_unlock(sk, other); |
972 | } | 980 | } |
973 | return 0; | 981 | return 0; |
@@ -1003,7 +1011,7 @@ static long unix_wait_for_peer(struct sock *other, long timeo) | |||
1003 | static int unix_stream_connect(struct socket *sock, struct sockaddr *uaddr, | 1011 | static int unix_stream_connect(struct socket *sock, struct sockaddr *uaddr, |
1004 | int addr_len, int flags) | 1012 | int addr_len, int flags) |
1005 | { | 1013 | { |
1006 | struct sockaddr_un *sunaddr=(struct sockaddr_un *)uaddr; | 1014 | struct sockaddr_un *sunaddr = (struct sockaddr_un *)uaddr; |
1007 | struct sock *sk = sock->sk; | 1015 | struct sock *sk = sock->sk; |
1008 | struct net *net = sock_net(sk); | 1016 | struct net *net = sock_net(sk); |
1009 | struct unix_sock *u = unix_sk(sk), *newu, *otheru; | 1017 | struct unix_sock *u = unix_sk(sk), *newu, *otheru; |
@@ -1177,13 +1185,13 @@ out: | |||
1177 | 1185 | ||
1178 | static int unix_socketpair(struct socket *socka, struct socket *sockb) | 1186 | static int unix_socketpair(struct socket *socka, struct socket *sockb) |
1179 | { | 1187 | { |
1180 | struct sock *ska=socka->sk, *skb = sockb->sk; | 1188 | struct sock *ska = socka->sk, *skb = sockb->sk; |
1181 | 1189 | ||
1182 | /* Join our sockets back to back */ | 1190 | /* Join our sockets back to back */ |
1183 | sock_hold(ska); | 1191 | sock_hold(ska); |
1184 | sock_hold(skb); | 1192 | sock_hold(skb); |
1185 | unix_peer(ska)=skb; | 1193 | unix_peer(ska) = skb; |
1186 | unix_peer(skb)=ska; | 1194 | unix_peer(skb) = ska; |
1187 | ska->sk_peercred.pid = skb->sk_peercred.pid = task_tgid_vnr(current); | 1195 | ska->sk_peercred.pid = skb->sk_peercred.pid = task_tgid_vnr(current); |
1188 | current_euid_egid(&skb->sk_peercred.uid, &skb->sk_peercred.gid); | 1196 | current_euid_egid(&skb->sk_peercred.uid, &skb->sk_peercred.gid); |
1189 | ska->sk_peercred.uid = skb->sk_peercred.uid; | 1197 | ska->sk_peercred.uid = skb->sk_peercred.uid; |
@@ -1206,7 +1214,7 @@ static int unix_accept(struct socket *sock, struct socket *newsock, int flags) | |||
1206 | int err; | 1214 | int err; |
1207 | 1215 | ||
1208 | err = -EOPNOTSUPP; | 1216 | err = -EOPNOTSUPP; |
1209 | if (sock->type!=SOCK_STREAM && sock->type!=SOCK_SEQPACKET) | 1217 | if (sock->type != SOCK_STREAM && sock->type != SOCK_SEQPACKET) |
1210 | goto out; | 1218 | goto out; |
1211 | 1219 | ||
1212 | err = -EINVAL; | 1220 | err = -EINVAL; |
@@ -1245,7 +1253,7 @@ static int unix_getname(struct socket *sock, struct sockaddr *uaddr, int *uaddr_ | |||
1245 | { | 1253 | { |
1246 | struct sock *sk = sock->sk; | 1254 | struct sock *sk = sock->sk; |
1247 | struct unix_sock *u; | 1255 | struct unix_sock *u; |
1248 | struct sockaddr_un *sunaddr=(struct sockaddr_un *)uaddr; | 1256 | struct sockaddr_un *sunaddr = (struct sockaddr_un *)uaddr; |
1249 | int err = 0; | 1257 | int err = 0; |
1250 | 1258 | ||
1251 | if (peer) { | 1259 | if (peer) { |
@@ -1285,7 +1293,7 @@ static void unix_detach_fds(struct scm_cookie *scm, struct sk_buff *skb) | |||
1285 | skb->destructor = sock_wfree; | 1293 | skb->destructor = sock_wfree; |
1286 | UNIXCB(skb).fp = NULL; | 1294 | UNIXCB(skb).fp = NULL; |
1287 | 1295 | ||
1288 | for (i=scm->fp->count-1; i>=0; i--) | 1296 | for (i = scm->fp->count-1; i >= 0; i--) |
1289 | unix_notinflight(scm->fp->fp[i]); | 1297 | unix_notinflight(scm->fp->fp[i]); |
1290 | } | 1298 | } |
1291 | 1299 | ||
@@ -1314,7 +1322,7 @@ static int unix_attach_fds(struct scm_cookie *scm, struct sk_buff *skb) | |||
1314 | if (!UNIXCB(skb).fp) | 1322 | if (!UNIXCB(skb).fp) |
1315 | return -ENOMEM; | 1323 | return -ENOMEM; |
1316 | 1324 | ||
1317 | for (i=scm->fp->count-1; i>=0; i--) | 1325 | for (i = scm->fp->count-1; i >= 0; i--) |
1318 | unix_inflight(scm->fp->fp[i]); | 1326 | unix_inflight(scm->fp->fp[i]); |
1319 | skb->destructor = unix_destruct_fds; | 1327 | skb->destructor = unix_destruct_fds; |
1320 | return 0; | 1328 | return 0; |
@@ -1331,7 +1339,7 @@ static int unix_dgram_sendmsg(struct kiocb *kiocb, struct socket *sock, | |||
1331 | struct sock *sk = sock->sk; | 1339 | struct sock *sk = sock->sk; |
1332 | struct net *net = sock_net(sk); | 1340 | struct net *net = sock_net(sk); |
1333 | struct unix_sock *u = unix_sk(sk); | 1341 | struct unix_sock *u = unix_sk(sk); |
1334 | struct sockaddr_un *sunaddr=msg->msg_name; | 1342 | struct sockaddr_un *sunaddr = msg->msg_name; |
1335 | struct sock *other = NULL; | 1343 | struct sock *other = NULL; |
1336 | int namelen = 0; /* fake GCC */ | 1344 | int namelen = 0; /* fake GCC */ |
1337 | int err; | 1345 | int err; |
@@ -1373,7 +1381,7 @@ static int unix_dgram_sendmsg(struct kiocb *kiocb, struct socket *sock, | |||
1373 | goto out; | 1381 | goto out; |
1374 | 1382 | ||
1375 | skb = sock_alloc_send_skb(sk, len, msg->msg_flags&MSG_DONTWAIT, &err); | 1383 | skb = sock_alloc_send_skb(sk, len, msg->msg_flags&MSG_DONTWAIT, &err); |
1376 | if (skb==NULL) | 1384 | if (skb == NULL) |
1377 | goto out; | 1385 | goto out; |
1378 | 1386 | ||
1379 | memcpy(UNIXCREDS(skb), &siocb->scm->creds, sizeof(struct ucred)); | 1387 | memcpy(UNIXCREDS(skb), &siocb->scm->creds, sizeof(struct ucred)); |
@@ -1385,7 +1393,7 @@ static int unix_dgram_sendmsg(struct kiocb *kiocb, struct socket *sock, | |||
1385 | unix_get_secdata(siocb->scm, skb); | 1393 | unix_get_secdata(siocb->scm, skb); |
1386 | 1394 | ||
1387 | skb_reset_transport_header(skb); | 1395 | skb_reset_transport_header(skb); |
1388 | err = memcpy_fromiovec(skb_put(skb,len), msg->msg_iov, len); | 1396 | err = memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len); |
1389 | if (err) | 1397 | if (err) |
1390 | goto out_free; | 1398 | goto out_free; |
1391 | 1399 | ||
@@ -1399,7 +1407,7 @@ restart: | |||
1399 | 1407 | ||
1400 | other = unix_find_other(net, sunaddr, namelen, sk->sk_type, | 1408 | other = unix_find_other(net, sunaddr, namelen, sk->sk_type, |
1401 | hash, &err); | 1409 | hash, &err); |
1402 | if (other==NULL) | 1410 | if (other == NULL) |
1403 | goto out_free; | 1411 | goto out_free; |
1404 | } | 1412 | } |
1405 | 1413 | ||
@@ -1419,7 +1427,7 @@ restart: | |||
1419 | err = 0; | 1427 | err = 0; |
1420 | unix_state_lock(sk); | 1428 | unix_state_lock(sk); |
1421 | if (unix_peer(sk) == other) { | 1429 | if (unix_peer(sk) == other) { |
1422 | unix_peer(sk)=NULL; | 1430 | unix_peer(sk) = NULL; |
1423 | unix_state_unlock(sk); | 1431 | unix_state_unlock(sk); |
1424 | 1432 | ||
1425 | unix_dgram_disconnected(sk, other); | 1433 | unix_dgram_disconnected(sk, other); |
@@ -1485,10 +1493,10 @@ static int unix_stream_sendmsg(struct kiocb *kiocb, struct socket *sock, | |||
1485 | struct sock_iocb *siocb = kiocb_to_siocb(kiocb); | 1493 | struct sock_iocb *siocb = kiocb_to_siocb(kiocb); |
1486 | struct sock *sk = sock->sk; | 1494 | struct sock *sk = sock->sk; |
1487 | struct sock *other = NULL; | 1495 | struct sock *other = NULL; |
1488 | struct sockaddr_un *sunaddr=msg->msg_name; | 1496 | struct sockaddr_un *sunaddr = msg->msg_name; |
1489 | int err,size; | 1497 | int err, size; |
1490 | struct sk_buff *skb; | 1498 | struct sk_buff *skb; |
1491 | int sent=0; | 1499 | int sent = 0; |
1492 | struct scm_cookie tmp_scm; | 1500 | struct scm_cookie tmp_scm; |
1493 | 1501 | ||
1494 | if (NULL == siocb->scm) | 1502 | if (NULL == siocb->scm) |
@@ -1516,8 +1524,7 @@ static int unix_stream_sendmsg(struct kiocb *kiocb, struct socket *sock, | |||
1516 | if (sk->sk_shutdown & SEND_SHUTDOWN) | 1524 | if (sk->sk_shutdown & SEND_SHUTDOWN) |
1517 | goto pipe_err; | 1525 | goto pipe_err; |
1518 | 1526 | ||
1519 | while(sent < len) | 1527 | while (sent < len) { |
1520 | { | ||
1521 | /* | 1528 | /* |
1522 | * Optimisation for the fact that under 0.01% of X | 1529 | * Optimisation for the fact that under 0.01% of X |
1523 | * messages typically need breaking up. | 1530 | * messages typically need breaking up. |
@@ -1536,9 +1543,10 @@ static int unix_stream_sendmsg(struct kiocb *kiocb, struct socket *sock, | |||
1536 | * Grab a buffer | 1543 | * Grab a buffer |
1537 | */ | 1544 | */ |
1538 | 1545 | ||
1539 | skb=sock_alloc_send_skb(sk,size,msg->msg_flags&MSG_DONTWAIT, &err); | 1546 | skb = sock_alloc_send_skb(sk, size, msg->msg_flags&MSG_DONTWAIT, |
1547 | &err); | ||
1540 | 1548 | ||
1541 | if (skb==NULL) | 1549 | if (skb == NULL) |
1542 | goto out_err; | 1550 | goto out_err; |
1543 | 1551 | ||
1544 | /* | 1552 | /* |
@@ -1559,7 +1567,8 @@ static int unix_stream_sendmsg(struct kiocb *kiocb, struct socket *sock, | |||
1559 | } | 1567 | } |
1560 | } | 1568 | } |
1561 | 1569 | ||
1562 | if ((err = memcpy_fromiovec(skb_put(skb,size), msg->msg_iov, size)) != 0) { | 1570 | err = memcpy_fromiovec(skb_put(skb, size), msg->msg_iov, size); |
1571 | if (err) { | ||
1563 | kfree_skb(skb); | 1572 | kfree_skb(skb); |
1564 | goto out_err; | 1573 | goto out_err; |
1565 | } | 1574 | } |
@@ -1573,7 +1582,7 @@ static int unix_stream_sendmsg(struct kiocb *kiocb, struct socket *sock, | |||
1573 | skb_queue_tail(&other->sk_receive_queue, skb); | 1582 | skb_queue_tail(&other->sk_receive_queue, skb); |
1574 | unix_state_unlock(other); | 1583 | unix_state_unlock(other); |
1575 | other->sk_data_ready(other, size); | 1584 | other->sk_data_ready(other, size); |
1576 | sent+=size; | 1585 | sent += size; |
1577 | } | 1586 | } |
1578 | 1587 | ||
1579 | scm_destroy(siocb->scm); | 1588 | scm_destroy(siocb->scm); |
@@ -1585,8 +1594,8 @@ pipe_err_free: | |||
1585 | unix_state_unlock(other); | 1594 | unix_state_unlock(other); |
1586 | kfree_skb(skb); | 1595 | kfree_skb(skb); |
1587 | pipe_err: | 1596 | pipe_err: |
1588 | if (sent==0 && !(msg->msg_flags&MSG_NOSIGNAL)) | 1597 | if (sent == 0 && !(msg->msg_flags&MSG_NOSIGNAL)) |
1589 | send_sig(SIGPIPE,current,0); | 1598 | send_sig(SIGPIPE, current, 0); |
1590 | err = -EPIPE; | 1599 | err = -EPIPE; |
1591 | out_err: | 1600 | out_err: |
1592 | scm_destroy(siocb->scm); | 1601 | scm_destroy(siocb->scm); |
@@ -1676,13 +1685,10 @@ static int unix_dgram_recvmsg(struct kiocb *iocb, struct socket *sock, | |||
1676 | siocb->scm->creds = *UNIXCREDS(skb); | 1685 | siocb->scm->creds = *UNIXCREDS(skb); |
1677 | unix_set_secdata(siocb->scm, skb); | 1686 | unix_set_secdata(siocb->scm, skb); |
1678 | 1687 | ||
1679 | if (!(flags & MSG_PEEK)) | 1688 | if (!(flags & MSG_PEEK)) { |
1680 | { | ||
1681 | if (UNIXCB(skb).fp) | 1689 | if (UNIXCB(skb).fp) |
1682 | unix_detach_fds(siocb->scm, skb); | 1690 | unix_detach_fds(siocb->scm, skb); |
1683 | } | 1691 | } else { |
1684 | else | ||
1685 | { | ||
1686 | /* It is questionable: on PEEK we could: | 1692 | /* It is questionable: on PEEK we could: |
1687 | - do not return fds - good, but too simple 8) | 1693 | - do not return fds - good, but too simple 8) |
1688 | - return fds, and do not return them on read (old strategy, | 1694 | - return fds, and do not return them on read (old strategy, |
@@ -1703,7 +1709,7 @@ static int unix_dgram_recvmsg(struct kiocb *iocb, struct socket *sock, | |||
1703 | scm_recv(sock, msg, siocb->scm, flags); | 1709 | scm_recv(sock, msg, siocb->scm, flags); |
1704 | 1710 | ||
1705 | out_free: | 1711 | out_free: |
1706 | skb_free_datagram(sk,skb); | 1712 | skb_free_datagram(sk, skb); |
1707 | out_unlock: | 1713 | out_unlock: |
1708 | mutex_unlock(&u->readlock); | 1714 | mutex_unlock(&u->readlock); |
1709 | out: | 1715 | out: |
@@ -1714,7 +1720,7 @@ out: | |||
1714 | * Sleep until data has arrive. But check for races.. | 1720 | * Sleep until data has arrive. But check for races.. |
1715 | */ | 1721 | */ |
1716 | 1722 | ||
1717 | static long unix_stream_data_wait(struct sock * sk, long timeo) | 1723 | static long unix_stream_data_wait(struct sock *sk, long timeo) |
1718 | { | 1724 | { |
1719 | DEFINE_WAIT(wait); | 1725 | DEFINE_WAIT(wait); |
1720 | 1726 | ||
@@ -1752,7 +1758,7 @@ static int unix_stream_recvmsg(struct kiocb *iocb, struct socket *sock, | |||
1752 | struct scm_cookie tmp_scm; | 1758 | struct scm_cookie tmp_scm; |
1753 | struct sock *sk = sock->sk; | 1759 | struct sock *sk = sock->sk; |
1754 | struct unix_sock *u = unix_sk(sk); | 1760 | struct unix_sock *u = unix_sk(sk); |
1755 | struct sockaddr_un *sunaddr=msg->msg_name; | 1761 | struct sockaddr_un *sunaddr = msg->msg_name; |
1756 | int copied = 0; | 1762 | int copied = 0; |
1757 | int check_creds = 0; | 1763 | int check_creds = 0; |
1758 | int target; | 1764 | int target; |
@@ -1783,15 +1789,13 @@ static int unix_stream_recvmsg(struct kiocb *iocb, struct socket *sock, | |||
1783 | 1789 | ||
1784 | mutex_lock(&u->readlock); | 1790 | mutex_lock(&u->readlock); |
1785 | 1791 | ||
1786 | do | 1792 | do { |
1787 | { | ||
1788 | int chunk; | 1793 | int chunk; |
1789 | struct sk_buff *skb; | 1794 | struct sk_buff *skb; |
1790 | 1795 | ||
1791 | unix_state_lock(sk); | 1796 | unix_state_lock(sk); |
1792 | skb = skb_dequeue(&sk->sk_receive_queue); | 1797 | skb = skb_dequeue(&sk->sk_receive_queue); |
1793 | if (skb==NULL) | 1798 | if (skb == NULL) { |
1794 | { | ||
1795 | if (copied >= target) | 1799 | if (copied >= target) |
1796 | goto unlock; | 1800 | goto unlock; |
1797 | 1801 | ||
@@ -1799,7 +1803,8 @@ static int unix_stream_recvmsg(struct kiocb *iocb, struct socket *sock, | |||
1799 | * POSIX 1003.1g mandates this order. | 1803 | * POSIX 1003.1g mandates this order. |
1800 | */ | 1804 | */ |
1801 | 1805 | ||
1802 | if ((err = sock_error(sk)) != 0) | 1806 | err = sock_error(sk); |
1807 | if (err) | ||
1803 | goto unlock; | 1808 | goto unlock; |
1804 | if (sk->sk_shutdown & RCV_SHUTDOWN) | 1809 | if (sk->sk_shutdown & RCV_SHUTDOWN) |
1805 | goto unlock; | 1810 | goto unlock; |
@@ -1826,7 +1831,8 @@ static int unix_stream_recvmsg(struct kiocb *iocb, struct socket *sock, | |||
1826 | 1831 | ||
1827 | if (check_creds) { | 1832 | if (check_creds) { |
1828 | /* Never glue messages from different writers */ | 1833 | /* Never glue messages from different writers */ |
1829 | if (memcmp(UNIXCREDS(skb), &siocb->scm->creds, sizeof(siocb->scm->creds)) != 0) { | 1834 | if (memcmp(UNIXCREDS(skb), &siocb->scm->creds, |
1835 | sizeof(siocb->scm->creds)) != 0) { | ||
1830 | skb_queue_head(&sk->sk_receive_queue, skb); | 1836 | skb_queue_head(&sk->sk_receive_queue, skb); |
1831 | break; | 1837 | break; |
1832 | } | 1838 | } |
@@ -1837,8 +1843,7 @@ static int unix_stream_recvmsg(struct kiocb *iocb, struct socket *sock, | |||
1837 | } | 1843 | } |
1838 | 1844 | ||
1839 | /* Copy address just once */ | 1845 | /* Copy address just once */ |
1840 | if (sunaddr) | 1846 | if (sunaddr) { |
1841 | { | ||
1842 | unix_copy_addr(msg, skb->sk); | 1847 | unix_copy_addr(msg, skb->sk); |
1843 | sunaddr = NULL; | 1848 | sunaddr = NULL; |
1844 | } | 1849 | } |
@@ -1854,16 +1859,14 @@ static int unix_stream_recvmsg(struct kiocb *iocb, struct socket *sock, | |||
1854 | size -= chunk; | 1859 | size -= chunk; |
1855 | 1860 | ||
1856 | /* Mark read part of skb as used */ | 1861 | /* Mark read part of skb as used */ |
1857 | if (!(flags & MSG_PEEK)) | 1862 | if (!(flags & MSG_PEEK)) { |
1858 | { | ||
1859 | skb_pull(skb, chunk); | 1863 | skb_pull(skb, chunk); |
1860 | 1864 | ||
1861 | if (UNIXCB(skb).fp) | 1865 | if (UNIXCB(skb).fp) |
1862 | unix_detach_fds(siocb->scm, skb); | 1866 | unix_detach_fds(siocb->scm, skb); |
1863 | 1867 | ||
1864 | /* put the skb back if we didn't use it up.. */ | 1868 | /* put the skb back if we didn't use it up.. */ |
1865 | if (skb->len) | 1869 | if (skb->len) { |
1866 | { | ||
1867 | skb_queue_head(&sk->sk_receive_queue, skb); | 1870 | skb_queue_head(&sk->sk_receive_queue, skb); |
1868 | break; | 1871 | break; |
1869 | } | 1872 | } |
@@ -1872,9 +1875,7 @@ static int unix_stream_recvmsg(struct kiocb *iocb, struct socket *sock, | |||
1872 | 1875 | ||
1873 | if (siocb->scm->fp) | 1876 | if (siocb->scm->fp) |
1874 | break; | 1877 | break; |
1875 | } | 1878 | } else { |
1876 | else | ||
1877 | { | ||
1878 | /* It is questionable, see note in unix_dgram_recvmsg. | 1879 | /* It is questionable, see note in unix_dgram_recvmsg. |
1879 | */ | 1880 | */ |
1880 | if (UNIXCB(skb).fp) | 1881 | if (UNIXCB(skb).fp) |
@@ -1902,7 +1903,7 @@ static int unix_shutdown(struct socket *sock, int mode) | |||
1902 | if (mode) { | 1903 | if (mode) { |
1903 | unix_state_lock(sk); | 1904 | unix_state_lock(sk); |
1904 | sk->sk_shutdown |= mode; | 1905 | sk->sk_shutdown |= mode; |
1905 | other=unix_peer(sk); | 1906 | other = unix_peer(sk); |
1906 | if (other) | 1907 | if (other) |
1907 | sock_hold(other); | 1908 | sock_hold(other); |
1908 | unix_state_unlock(sk); | 1909 | unix_state_unlock(sk); |
@@ -1937,16 +1938,15 @@ static int unix_shutdown(struct socket *sock, int mode) | |||
1937 | static int unix_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | 1938 | static int unix_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) |
1938 | { | 1939 | { |
1939 | struct sock *sk = sock->sk; | 1940 | struct sock *sk = sock->sk; |
1940 | long amount=0; | 1941 | long amount = 0; |
1941 | int err; | 1942 | int err; |
1942 | 1943 | ||
1943 | switch(cmd) | 1944 | switch (cmd) { |
1944 | { | 1945 | case SIOCOUTQ: |
1945 | case SIOCOUTQ: | 1946 | amount = atomic_read(&sk->sk_wmem_alloc); |
1946 | amount = atomic_read(&sk->sk_wmem_alloc); | 1947 | err = put_user(amount, (int __user *)arg); |
1947 | err = put_user(amount, (int __user *)arg); | 1948 | break; |
1948 | break; | 1949 | case SIOCINQ: |
1949 | case SIOCINQ: | ||
1950 | { | 1950 | { |
1951 | struct sk_buff *skb; | 1951 | struct sk_buff *skb; |
1952 | 1952 | ||
@@ -1963,21 +1963,21 @@ static int unix_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |||
1963 | } else { | 1963 | } else { |
1964 | skb = skb_peek(&sk->sk_receive_queue); | 1964 | skb = skb_peek(&sk->sk_receive_queue); |
1965 | if (skb) | 1965 | if (skb) |
1966 | amount=skb->len; | 1966 | amount = skb->len; |
1967 | } | 1967 | } |
1968 | spin_unlock(&sk->sk_receive_queue.lock); | 1968 | spin_unlock(&sk->sk_receive_queue.lock); |
1969 | err = put_user(amount, (int __user *)arg); | 1969 | err = put_user(amount, (int __user *)arg); |
1970 | break; | 1970 | break; |
1971 | } | 1971 | } |
1972 | 1972 | ||
1973 | default: | 1973 | default: |
1974 | err = -ENOIOCTLCMD; | 1974 | err = -ENOIOCTLCMD; |
1975 | break; | 1975 | break; |
1976 | } | 1976 | } |
1977 | return err; | 1977 | return err; |
1978 | } | 1978 | } |
1979 | 1979 | ||
1980 | static unsigned int unix_poll(struct file * file, struct socket *sock, poll_table *wait) | 1980 | static unsigned int unix_poll(struct file *file, struct socket *sock, poll_table *wait) |
1981 | { | 1981 | { |
1982 | struct sock *sk = sock->sk; | 1982 | struct sock *sk = sock->sk; |
1983 | unsigned int mask; | 1983 | unsigned int mask; |
@@ -1999,7 +1999,8 @@ static unsigned int unix_poll(struct file * file, struct socket *sock, poll_tabl | |||
1999 | mask |= POLLIN | POLLRDNORM; | 1999 | mask |= POLLIN | POLLRDNORM; |
2000 | 2000 | ||
2001 | /* Connection-based need to check for termination and startup */ | 2001 | /* Connection-based need to check for termination and startup */ |
2002 | if ((sk->sk_type == SOCK_STREAM || sk->sk_type == SOCK_SEQPACKET) && sk->sk_state == TCP_CLOSE) | 2002 | if ((sk->sk_type == SOCK_STREAM || sk->sk_type == SOCK_SEQPACKET) && |
2003 | sk->sk_state == TCP_CLOSE) | ||
2003 | mask |= POLLHUP; | 2004 | mask |= POLLHUP; |
2004 | 2005 | ||
2005 | /* | 2006 | /* |
@@ -2095,6 +2096,7 @@ struct unix_iter_state { | |||
2095 | struct seq_net_private p; | 2096 | struct seq_net_private p; |
2096 | int i; | 2097 | int i; |
2097 | }; | 2098 | }; |
2099 | |||
2098 | static struct sock *unix_seq_idx(struct seq_file *seq, loff_t pos) | 2100 | static struct sock *unix_seq_idx(struct seq_file *seq, loff_t pos) |
2099 | { | 2101 | { |
2100 | struct unix_iter_state *iter = seq->private; | 2102 | struct unix_iter_state *iter = seq->private; |
@@ -2111,7 +2113,6 @@ static struct sock *unix_seq_idx(struct seq_file *seq, loff_t pos) | |||
2111 | return NULL; | 2113 | return NULL; |
2112 | } | 2114 | } |
2113 | 2115 | ||
2114 | |||
2115 | static void *unix_seq_start(struct seq_file *seq, loff_t *pos) | 2116 | static void *unix_seq_start(struct seq_file *seq, loff_t *pos) |
2116 | __acquires(unix_table_lock) | 2117 | __acquires(unix_table_lock) |
2117 | { | 2118 | { |
@@ -2191,7 +2192,6 @@ static const struct seq_operations unix_seq_ops = { | |||
2191 | .show = unix_seq_show, | 2192 | .show = unix_seq_show, |
2192 | }; | 2193 | }; |
2193 | 2194 | ||
2194 | |||
2195 | static int unix_seq_open(struct inode *inode, struct file *file) | 2195 | static int unix_seq_open(struct inode *inode, struct file *file) |
2196 | { | 2196 | { |
2197 | return seq_open_net(inode, file, &unix_seq_ops, | 2197 | return seq_open_net(inode, file, &unix_seq_ops, |