/* shm_unlink -- remove a POSIX shared memory object. Generic POSIX version.
- Copyright (C) 2001,02 Free Software Foundation, Inc.
+ Copyright (C) 2001-2019 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
#include <unistd.h>
#if ! _POSIX_MAPPED_FILES
-#include <sysdeps/generic/shm_unlink.c>
+#include <rt/shm_unlink.c>
#else
#include <errno.h>
-#include <sys/mman.h>
#include <string.h>
-#include <stdlib.h>
-#include <paths.h>
+#include "shm-directory.h"
-#define SHMDIR (_PATH_DEV "shm/")
/* Remove shared memory object. */
int
shm_unlink (const char *name)
{
- size_t namelen;
- char *fname;
-
- /* Construct the filename. */
- while (name[0] == '/')
- ++name;
-
- if (name[0] == '\0')
- {
- /* The name "/" is not supported. */
- __set_errno (EINVAL);
- return -1;
- }
-
- namelen = strlen (name);
- fname = (char *) __alloca (sizeof SHMDIR - 1 + namelen + 1);
- __mempcpy (__mempcpy (fname, SHMDIR, sizeof SHMDIR - 1),
- name, namelen + 1);
-
- return unlink (name);
+ SHM_GET_NAME (ENOENT, -1, "");
+
+ int result = unlink (shm_name);
+ if (result < 0 && errno == EPERM)
+ __set_errno (EACCES);
+ return result;
}
#endif