SEM_UNLINK

Section: Linux Programmer's Manual (3)
Updated: 2015-08-08
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NAME

sem_unlink - remove a named semaphore  

SYNOPSIS

#include <semaphore.h>

int sem_unlink(const char *name);

Link with -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.

 

ATTRIBUTES

For an explanation of the terms used in this section, see attributes(7).

Interface	Attribute	Value
sem_unlink()	Thread safety	MT-Safe

 

CONFORMING TO

POSIX.1-2001, POSIX.1-2008.  

SEE ALSO

sem_getvalue(3), sem_open(3), sem_post(3), sem_wait(3), sem_overview(7)  

COLOPHON

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Index

NAME

SYNOPSIS

DESCRIPTION

RETURN VALUE

ERRORS

ATTRIBUTES

CONFORMING TO

SEE ALSO

COLOPHON