| /* shm_unlink -- remove a POSIX shared memory object. Generic POSIX version. |
| Copyright (C) 2001-2014 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 |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 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, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <unistd.h> |
| |
| #if ! _POSIX_MAPPED_FILES |
| #include <rt/shm_unlink.c> |
| |
| #else |
| |
| #include <errno.h> |
| #include <sys/mman.h> |
| #include <string.h> |
| #include <stdlib.h> |
| #include <paths.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); |
| } |
| |
| #endif |