SEM_UNLINK(2) BSD System Calls Manual SEM_UNLINK(2)NAME
sem_unlink -- remove a named semaphore
SYNOPSIS
#include <semaphore.h>
int
sem_unlink(const char *name);
DESCRIPTION
The named semaphore named name is removed. If the semaphore is in use by other processes, then name is immediately disassociated with the
semaphore, but the semaphore itself will not be removed until all references to it have been closed. Subsequent calls to sem_open() using
name will refer to or create a new semaphore named name.
If successful, sem_unlink() will return 0. Otherwise, -1 is returned and errno is set, and the state of the semaphore is unchanged.
ERRORS
sem_unlink() succeeds unless:
[EACCES] Permission is denied to be remove the semaphore.
[ENAMETOOLONG] name exceeded SEM_NAME_LEN characters.
[ENOENT] The named semaphore does not exist.
SEE ALSO sem_close(2), sem_open(2), semctl(2), semget(2), semop(2)HISTORY
sem_unlink() is specified in the POSIX Realtime Extension (1003.1b-1993/1003.1i-1995).
Darwin June 8, 2000 Darwin
Check Out this Related Man Page
SEM_UNLINK(3) Linux Programmer's Manual SEM_UNLINK(3)NAME
sem_unlink - remove a named semaphore
SYNOPSIS
#include <semaphore.h>
int sem_unlink(const char *name);
Link with -lrt or -pthread.
DESCRIPTION
sem_unlink() removes the named semaphore referred to by name. The semaphore name is removed immediately. The semaphore is destroyed once
all other processes that have the semaphore open close it.
RETURN VALUE
On success sem_unlink() returns 0; on error, -1 is returned, with errno set to indicate the error.
ERRORS
EACCES The caller does not have permission to unlink this semaphore.
ENAMETOOLONG
name was too long.
ENOENT There is no semaphore with the given name.
CONFORMING TO
POSIX.1-2001.
SEE ALSO sem_getvalue(3), sem_open(3), sem_post(3), sem_wait(3), sem_overview(7)COLOPHON
This page is part of release 3.27 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
Linux 2006-03-25 SEM_UNLINK(3)
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