diff options
| author |   tedu <tedu@openbsd.org> | 2013-11-18 23:17:52 +0000 |
|---|---|---|
| committer | tedu <tedu@openbsd.org> | 2013-11-18 23:17:52 +0000 |
| commit | cd1cb807a469c7ce8c3b3f6b0d803f559f92462d (patch) | |
| tree | 9c74f0d22303062c316ddf0d2166adf77c67bcf0 /lib/libpthread | |
| parent | interprocess semaphores ala sem_open. mostly following in the pattern (diff) | |
| download | wireguard-openbsd-cd1cb807a469c7ce8c3b3f6b0d803f559f92462d.tar.xz wireguard-openbsd-cd1cb807a469c7ce8c3b3f6b0d803f559f92462d.zip | |
boilerplate documentation
Diffstat (limited to 'lib/libpthread')
| -rw-r--r-- | lib/libpthread/man/sem_open.3 | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/lib/libpthread/man/sem_open.3 b/lib/libpthread/man/sem_open.3 index 22fdeeab5af..075f0aae121 100644 --- a/lib/libpthread/man/sem_open.3 +++ b/lib/libpthread/man/sem_open.3 @@ -1,4 +1,4 @@ -.\" $OpenBSD: sem_open.3,v 1.5 2013/06/05 03:44:50 tedu Exp $ +.\" $OpenBSD: sem_open.3,v 1.6 2013/11/18 23:17:52 tedu Exp $ .\" .\" Copyright (C) 2000 Jason Evans <jasone@FreeBSD.org>. .\" All rights reserved. @@ -28,7 +28,7 @@ .\" EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. .\" .\" $FreeBSD: src/lib/libc_r/man/sem_open.3,v 1.7 2001/10/01 16:09:09 ru Exp $ -.Dd $Mdocdate: June 5 2013 $ +.Dd $Mdocdate: November 18 2013 $ .Dt SEM_OPEN 3 .Os .Sh NAME @@ -46,11 +46,13 @@ .Fn sem_unlink "const char *name" .Sh DESCRIPTION The -.Fn sem_open , -.Fn sem_close , -and +.Fn sem_open +function opens and returns a named semaphore. +The .Fn sem_close +function closes a previously opened named semaphore without removing it. +The .Fn sem_unlink -functions are not supported by this implementation. +function removes the named semaphore from the system without closing it. .Sh RETURN VALUES .Fn sem_open returns SEM_FAILED and sets @@ -67,8 +69,10 @@ to indicate an error. .Fn sem_close , and .Fn sem_unlink -will fail: +may fail: .Bl -tag -width Er +.It Bq Er EPERM +An attempt was made to open a shared semaphore owned by another user. .It Bq Er ENOSYS Function not supported by this implementation. .El |