sem_unlink(3) Library Functions Manual sem_unlink(3)
NAME
sem_unlink - remove a named semaphore
LIBRARY
POSIX threads library (libpthread, -lpthread)
SYNOPSIS
#include <semaphore.h>
int sem_unlink(const char *name);
DESCRIPTION
sem_unlink() removes the named semaphore referred to by name. The sema-
phore 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.
ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7).
┌────────────────────────────────────────────┬───────────────┬─────────┐
│ Interface │ Attribute │ Value │
├────────────────────────────────────────────┼───────────────┼─────────┤
│ sem_unlink() │ Thread safety │ MT-Safe │
└────────────────────────────────────────────┴───────────────┴─────────┘
STANDARDS
POSIX.1-2008.
HISTORY
POSIX.1-2001.
SEE ALSO
sem_getvalue(3), sem_open(3), sem_post(3), sem_wait(3), sem_overview(7)
Linux man-pages 6.9.1 2024-05-02 sem_unlink(3)
Generated by dwww version 1.16 on Tue Dec 16 04:41:19 CET 2025.