Undo last change. Add asflags-cpu to ASFLAGS in the same place we add
[glibc/history.git] / nptl / sem_unlink.c
blob17074774db3a1619028eefc046df2839772aeb3a
1 /* Copyright (C) 2002, 2004 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
18 02111-1307 USA. */
20 #include <errno.h>
21 #include <semaphore.h>
22 #include <stdlib.h>
23 #include <string.h>
24 #include <unistd.h>
25 #include "semaphoreP.h"
28 int
29 sem_unlink (name)
30 const char *name;
32 char *fname;
33 size_t namelen;
35 /* Determine where the shmfs is mounted. */
36 INTUSE(__pthread_once) (&__namedsem_once, __where_is_shmfs);
38 /* If we don't know the mount points there is nothing we can do. Ever. */
39 if (mountpoint.dir == NULL)
41 __set_errno (ENOSYS);
42 return -1;
45 /* Construct the filename. */
46 while (name[0] == '/')
47 ++name;
49 if (name[0] == '\0')
51 /* The name "/" is not supported. */
52 __set_errno (ENOENT);
53 return -1;
55 namelen = strlen (name);
57 /* Create the name of the file. */
58 fname = (char *) alloca (mountpoint.dirlen + namelen + 1);
59 __mempcpy (__mempcpy (fname, mountpoint.dir, mountpoint.dirlen),
60 name, namelen + 1);
62 /* Now try removing it. */
63 int ret = unlink (fname);
64 if (ret < 0 && errno == EPERM)
65 __set_errno (EACCES);
66 return ret;