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| author |   tedu <tedu@openbsd.org> | 2013-11-20 03:26:56 +0000 |
|---|---|---|
| committer | tedu <tedu@openbsd.org> | 2013-11-20 03:26:56 +0000 |
| commit | 772c37b9b97521da4a5d1c4049df44e00ea61c00 (patch) | |
| tree | b00b7d9aa49da4640c1185d430880031faf2264c /lib/libpthread | |
| parent | more detail on error conditions (diff) | |
| download | wireguard-openbsd-772c37b9b97521da4a5d1c4049df44e00ea61c00.tar.xz wireguard-openbsd-772c37b9b97521da4a5d1c4049df44e00ea61c00.zip | |
this implementation may now be capable of shared semaphores
Diffstat (limited to 'lib/libpthread')
| -rw-r--r-- | lib/libpthread/man/sem_init.3 | 25 |
1 files changed, 8 insertions, 17 deletions
diff --git a/lib/libpthread/man/sem_init.3 b/lib/libpthread/man/sem_init.3 index e8595ebdbf7..92bd6d274fa 100644 --- a/lib/libpthread/man/sem_init.3 +++ b/lib/libpthread/man/sem_init.3 @@ -1,4 +1,4 @@ -.\" $OpenBSD: sem_init.3,v 1.5 2013/06/05 03:44:50 tedu Exp $ +.\" $OpenBSD: sem_init.3,v 1.6 2013/11/20 03:26:56 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_init.3,v 1.11 2001/10/01 16:09:09 ru Exp $ -.Dd $Mdocdate: June 5 2013 $ +.Dd $Mdocdate: November 20 2013 $ .Dt SEM_INIT 3 .Os .Sh NAME @@ -47,8 +47,7 @@ to have the value .Fa value . A non-zero value for .Fa pshared -specifies a shared semaphore that can be used by multiple processes, which this -implementation is not capable of. +specifies a shared semaphore that can be used by multiple processes. .Pp Following a successful call to .Fn sem_init , @@ -65,6 +64,11 @@ is no longer valid after a successful call to .Sh RETURN VALUES .Rv -std sem_init .Sh ERRORS +It is an error to call +.Fn sem_destroy +on a named semaphore created by +.Fn sem_open . +.Pp .Fn sem_init will fail if: .Bl -tag -width Er @@ -73,8 +77,6 @@ will fail if: exceeds SEM_VALUE_MAX. .It Bq Er ENOSPC Memory allocation error. -.It Bq Er EPERM -Unable to initialize a shared semaphore. .El .Sh SEE ALSO .Xr sem_destroy 3 , @@ -86,14 +88,3 @@ Unable to initialize a shared semaphore. .Fn sem_init conforms to .St -p1003.1-96 . -.Pp -This implementation does not support shared semaphores, and reports this fact -by setting -.Va errno -to -.Er EPERM . -This is perhaps a stretch of the intention of POSIX, but is -compliant, with the caveat that -.Fn sem_init -always reports a permissions error when an attempt to create a shared semaphore -is made. |