Fix sparse warnings and add an extra sprinkling of const.

[tinc] / lib / pidfile.h

diff --git a/lib/pidfile.h b/lib/pidfile.h
index d428d48..590a7bc 100644 (file)
--- a/lib/pidfile.h
+++ b/lib/pidfile.h
@@ -14,9 +14,9 @@
     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, write to the Free Software
-    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
 #ifndef HAVE_MINGW
@@ -26,7 +26,7 @@
  * 0 is returned if either there's no pidfile, it's empty
  * or no pid can be read.
  */
-int read_pid (char *pidfile);
+extern pid_t read_pid (const char *pidfile);
 
 /* check_pid
  *
@@ -34,19 +34,19 @@ int read_pid (char *pidfile);
  * table (using /proc) to determine if the process already exists. If
  * so 1 is returned, otherwise 0.
  */
-int check_pid (char *pidfile);
+extern pid_t check_pid (const char *pidfile);
 
 /* write_pid
  *
  * Writes the pid to the specified file. If that fails 0 is
  * returned, otherwise the pid.
  */
-int write_pid (char *pidfile);
+extern pid_t write_pid (const char *pidfile);
 
 /* remove_pid
  *
  * Remove the the specified file. The result from unlink(2)
  * is returned
  */
-int remove_pid (char *pidfile);
+extern int remove_pid (const char *pidfile);
 #endif