Move pthread* manpages to lib/libpthread as they are not libc_r specific.
[dragonfly.git] / lib / libpthread / sem_open.3
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28.\" $FreeBSD: src/lib/libc_r/man/sem_open.3,v 1.1.2.6 2001/12/17 10:08:26 ru Exp $
1de703da 29.\" $DragonFly: src/lib/libc_r/man/sem_open.3,v 1.2 2003/06/17 04:26:48 dillon Exp $
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30.Dd February 15, 2000
31.Dt SEM_OPEN 3
32.Os
33.Sh NAME
34.Nm sem_open ,
35.Nm sem_close ,
36.Nm sem_unlink
37.Nd named semaphore operations
38.Sh LIBRARY
39.Lb libc_r
40.Sh SYNOPSIS
41.In semaphore.h
42.Ft sem_t *
43.Fn sem_open "const char *name" "int oflag" "..."
44.Ft int
45.Fn sem_close "sem_t *sem"
46.Ft int
47.Fn sem_unlink "const char *name"
48.Sh DESCRIPTION
49The
50.Fn sem_open ,
51.Fn sem_close ,
52and
53.Fn sem_unlink
54functions are not supported by this implementation.
55.Sh RETURN VALUES
56.Fn sem_open
57returns SEM_FAILED and sets
58.Va errno
59to indicate an error.
60.Fn sem_close
61and
62.Fn sem_unlink
63return -1 and set
64.Va errno
65to indicate an error.
66.Sh ERRORS
67.Fn sem_open ,
68.Fn sem_close ,
69and
70.Fn sem_unlink
71will fail:
72.Bl -tag -width Er
73.It Bq Er ENOSYS
74Function not supported by this implementation.
75.El
76.Sh STANDARDS
77.Fn sem_open ,
78.Fn sem_close ,
79and
80.Fn sem_unlink
81conform to
82.St -p1003.1-96 .