sem_open.3 revision 57260
Copyright (C) 2000 Jason Evans <jasone@canonware.com>.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
$FreeBSD: head/lib/libc/gen/sem_open.3 57260 2000-02-16 19:31:53Z jasone $
.Dd February 15, 2000 .Dt SEM_OPEN 3 .Os .Sh NAME .Nm sem_open , .Nm sem_close , .Nm sem_unlink .Nd named semaphore operations .Sh SYNOPSIS .Fd #include <semaphore.h> .Ft sem_t * .Fn sem_open "const char *name" "int oflag" "..." .Ft int .Fn sem_close "sem_t *sem" .Ft int .Fn sem_unlink "const char *name" .Sh DESCRIPTION The .Fn sem_open , .Fn sem_close , and .Fn sem_unlink functions are not supported by this implementation. .Sh RETURN VALUES .Fn sem_open returns SEM_FAILED and sets .Va errno to indicate an error. .Fn sem_close and .Fn sem_unlink return -1 and set .Va errno to indicate an error. .Sh ERRORS .Fn sem_open , .Fn sem_close , and .Fn sem_unlink will fail: l -tag -width Er t Bq Er ENOSYS Function not supported by this implementation. .El .Sh STANDARDS .Fn sem_open , .Fn sem_close , and .Fn sem_unlink conform to ISO/IEC 9945-1 ANSI/IEEE
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice(s), this list of conditions and the following disclaimer as
the first lines of this file unmodified other than the possible
addition of one or more copyright notices.
2. Redistributions in binary form must reproduce the above copyright
notice(s), this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY
EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
$FreeBSD: head/lib/libc/gen/sem_open.3 57260 2000-02-16 19:31:53Z jasone $
.Dd February 15, 2000 .Dt SEM_OPEN 3 .Os .Sh NAME .Nm sem_open , .Nm sem_close , .Nm sem_unlink .Nd named semaphore operations .Sh SYNOPSIS .Fd #include <semaphore.h> .Ft sem_t * .Fn sem_open "const char *name" "int oflag" "..." .Ft int .Fn sem_close "sem_t *sem" .Ft int .Fn sem_unlink "const char *name" .Sh DESCRIPTION The .Fn sem_open , .Fn sem_close , and .Fn sem_unlink functions are not supported by this implementation. .Sh RETURN VALUES .Fn sem_open returns SEM_FAILED and sets .Va errno to indicate an error. .Fn sem_close and .Fn sem_unlink return -1 and set .Va errno to indicate an error. .Sh ERRORS .Fn sem_open , .Fn sem_close , and .Fn sem_unlink will fail: l -tag -width Er t Bq Er ENOSYS Function not supported by this implementation. .El .Sh STANDARDS .Fn sem_open , .Fn sem_close , and .Fn sem_unlink conform to ISO/IEC 9945-1 ANSI/IEEE
q Dq Tn POSIX Std 1003.1 1996 Edition.