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author | Dmitry Torokhov <dtor@insightbb.com> | 2006-12-08 01:07:56 -0500 |
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committer | Dmitry Torokhov <dtor@insightbb.com> | 2006-12-08 01:07:56 -0500 |
commit | bef986502fa398b1785a3979b1aa17cd902d3527 (patch) | |
tree | b59c1afe7b1dfcc001b86e54863f550d7ddc8c34 /ipc/msg.c | |
parent | 4bdbd2807deeccc0793d57fb5120d7a53f2c0b3c (diff) | |
parent | c99767974ebd2a719d849fdeaaa1674456f5283f (diff) | |
download | blackbird-op-linux-bef986502fa398b1785a3979b1aa17cd902d3527.tar.gz blackbird-op-linux-bef986502fa398b1785a3979b1aa17cd902d3527.zip |
Merge rsync://rsync.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:
drivers/usb/input/hid.h
Diffstat (limited to 'ipc/msg.c')
-rw-r--r-- | ipc/msg.c | 44 |
1 files changed, 33 insertions, 11 deletions
diff --git a/ipc/msg.c b/ipc/msg.c index 1266b1d0c8e3..a388824740e7 100644 --- a/ipc/msg.c +++ b/ipc/msg.c @@ -626,12 +626,11 @@ static inline int pipelined_send(struct msg_queue *msq, struct msg_msg *msg) return 0; } -asmlinkage long -sys_msgsnd(int msqid, struct msgbuf __user *msgp, size_t msgsz, int msgflg) +long do_msgsnd(int msqid, long mtype, void __user *mtext, + size_t msgsz, int msgflg) { struct msg_queue *msq; struct msg_msg *msg; - long mtype; int err; struct ipc_namespace *ns; @@ -639,12 +638,10 @@ sys_msgsnd(int msqid, struct msgbuf __user *msgp, size_t msgsz, int msgflg) if (msgsz > ns->msg_ctlmax || (long) msgsz < 0 || msqid < 0) return -EINVAL; - if (get_user(mtype, &msgp->mtype)) - return -EFAULT; if (mtype < 1) return -EINVAL; - msg = load_msg(msgp->mtext, msgsz); + msg = load_msg(mtext, msgsz); if (IS_ERR(msg)) return PTR_ERR(msg); @@ -723,6 +720,16 @@ out_free: return err; } +asmlinkage long +sys_msgsnd(int msqid, struct msgbuf __user *msgp, size_t msgsz, int msgflg) +{ + long mtype; + + if (get_user(mtype, &msgp->mtype)) + return -EFAULT; + return do_msgsnd(msqid, mtype, msgp->mtext, msgsz, msgflg); +} + static inline int convert_mode(long *msgtyp, int msgflg) { /* @@ -742,8 +749,8 @@ static inline int convert_mode(long *msgtyp, int msgflg) return SEARCH_EQUAL; } -asmlinkage long sys_msgrcv(int msqid, struct msgbuf __user *msgp, size_t msgsz, - long msgtyp, int msgflg) +long do_msgrcv(int msqid, long *pmtype, void __user *mtext, + size_t msgsz, long msgtyp, int msgflg) { struct msg_queue *msq; struct msg_msg *msg; @@ -889,15 +896,30 @@ out_unlock: return PTR_ERR(msg); msgsz = (msgsz > msg->m_ts) ? msg->m_ts : msgsz; - if (put_user (msg->m_type, &msgp->mtype) || - store_msg(msgp->mtext, msg, msgsz)) { + *pmtype = msg->m_type; + if (store_msg(mtext, msg, msgsz)) msgsz = -EFAULT; - } + free_msg(msg); return msgsz; } +asmlinkage long sys_msgrcv(int msqid, struct msgbuf __user *msgp, size_t msgsz, + long msgtyp, int msgflg) +{ + long err, mtype; + + err = do_msgrcv(msqid, &mtype, msgp->mtext, msgsz, msgtyp, msgflg); + if (err < 0) + goto out; + + if (put_user(mtype, &msgp->mtype)) + err = -EFAULT; +out: + return err; +} + #ifdef CONFIG_PROC_FS static int sysvipc_msg_proc_show(struct seq_file *s, void *it) { |