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SEM_UNLINK

Section: Linux Programmer's Manual (3)
Updated: 2015-08-08
Index Return to Main Contents
 

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).
InterfaceAttributeValue
sem_unlink() Thread safetyMT-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