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 -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
   Multithreading (see pthreads(7))
       The sem_unlink() function is thread-safe.

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 3.74 of the Linux man-pages project.  A  description  of  the
       project,  information  about  reporting  bugs, and the latest version of this page, can be
       found at http://www.kernel.org/doc/man-pages/.



Linux                                       2014-02-26                              SEM_UNLINK(3)