Move common linux procfs code to common/

gdb/common/linux-procfs.h

@@ -0,0 +1,29 @@
+/* Linux-specific PROCFS manipulation routines.
+   Copyright (C) 2011 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program 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 General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef COMMON_LINUX_PROCFS_H
+#define COMMON_LINUX_PROCFS_H
+
+#include <unistd.h>
+
+/* Return the TGID of LWPID from /proc/pid/status.  Returns -1 if not
+   found.  */
+
+extern int linux_proc_get_tgid (int lwpid);
+
+#endif /* COMMON_LINUX_PROCFS_H */