shm_unlink(3)shm_unlink(3)NAMEshm_unlink - Removes a shared memory object created by a call to the
shm_open function (P1003.1b)
SYNOPSIS
#include <sys/mman.h>
int shm_unlink ( const char *name);
LIBRARY
Realtime Library (librt.so, librt.a)
PARAMETERS
Points to the name of the shared memory object.
DESCRIPTION
The shm_unlink function removes the name of the shared memory object
pointed to by name. If this file descriptor is used by other functions,
all references to the shared memory object are removed, but content
removal is delayed until all open and mapped references to the shared
memory object are removed.
RETURN VALUES
On a successful call to the shm_unlink function, a value of 0 (zero) is
returned. Otherwise, a value of -1 is returned and errno is set to
indicate the error.
ERRORS
The shm_unlink function fails under the following conditions: Permis‐
sion to unlink the shared memory object is denied. The length of the
name argument exceeds PATH_MAX, or a pathname component is longer than
NAME_MAX while _POSIX_NO_TRUNC is in effect. The named shared memory
object does not exist.
SEE ALSO
Functions: close(2), mmap(2), munmap(2), shm_open(3)
Guide to Realtime Programming
shm_unlink(3)
