Author: jilles
Date: Sun Feb 8 21:58:25 2015
New Revision: 278410
URL: https://svnweb.freebsd.org/changeset/base/278410
Log:
MFC r277862: sem_post(): Fix and document semaphore value overflow error.
The error code is per Austin Group issue #315.
I provided different wording for the manual page change.
Submitted by: pluknet
Modified:
stable/10/lib/libc/gen/sem_new.c
stable/10/lib/libc/gen/sem_post.3
Directory Properties:
stable/10/ (props changed)
Modified: stable/10/lib/libc/gen/sem_new.c
==============================================================================
--- stable/10/lib/libc/gen/sem_new.c Sun Feb 8 21:49:29 2015
(r278409)
+++ stable/10/lib/libc/gen/sem_new.c Sun Feb 8 21:58:25 2015
(r278410)
@@ -439,8 +439,10 @@ _sem_post(sem_t *sem)
do {
count = sem->_kern._count;
- if (count + 1 > SEM_VALUE_MAX)
- return (EOVERFLOW);
+ if (count + 1 > SEM_VALUE_MAX) {
+ errno = EOVERFLOW;
+ return (-1);
+ }
} while(!atomic_cmpset_rel_int(&sem->_kern._count, count, count+1));
(void)usem_wake(&sem->_kern);
return (0);
Modified: stable/10/lib/libc/gen/sem_post.3
==============================================================================
--- stable/10/lib/libc/gen/sem_post.3 Sun Feb 8 21:49:29 2015
(r278409)
+++ stable/10/lib/libc/gen/sem_post.3 Sun Feb 8 21:58:25 2015
(r278410)
@@ -27,7 +27,7 @@
.\"
.\" $FreeBSD$
.\"
-.Dd February 15, 2000
+.Dd January 28, 2015
.Dt SEM_POST 3
.Os
.Sh NAME
@@ -65,6 +65,9 @@ The
.Fa sem
argument
points to an invalid semaphore.
+.It Bq Er EOVERFLOW
+The semaphore value would exceed
+.Dv SEM_VALUE_MAX .
.El
.Sh SEE ALSO
.Xr sem_getvalue 3 ,
_______________________________________________
svn-src-stable-10@freebsd.org mailing list
https://lists.freebsd.org/mailman/listinfo/svn-src-stable-10
To unsubscribe, send any mail to "svn-src-stable-10-unsubscr...@freebsd.org"
