Refactor shm_{open,unlink} code to separate Linux-specific directory choice from POSIX-generic code.

1 files changed, 35 insertions, 0 deletions

diff --git a/sysdeps/posix/shm-directory.c b/sysdeps/posix/shm-directory.c
new file mode 100644
index 0000000000..aea5f963b0
--- /dev/null
+++ b/sysdeps/posix/shm-directory.c
@@ -0,0 +1,35 @@
+/* Determine directory for shm/sem files.  Generic POSIX version.
+   Copyright (C) 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 "shm-directory.h"
+#include <unistd.h>
+
+#if _POSIX_MAPPED_FILES
+
+# include <paths.h>
+
+# define SHMDIR (_PATH_DEV "shm/")
+
+const char *
+__shm_directory (size_t *len)
+{
+  *len = sizeof SHMDIR - 1;
+  return SHMDIR;
+}
+
+#endif