1 files changed, 61 insertions, 0 deletions
diff --git a/libc/sysdeps/posix/shm_unlink.c b/libc/sysdeps/posix/shm_unlink.c
new file mode 100644
index 000000000..18ca416e1
--- /dev/null
+++ b/libc/sysdeps/posix/shm_unlink.c
@@ -0,0 +1,61 @@
+/* shm_unlink -- remove a POSIX shared memory object.  Generic POSIX version.
+   Copyright (C) 2001,2002,2005 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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#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