Modernize the build system.

[oweals/tinc.git] / lib / pidfile.c

diff --git a/lib/pidfile.c b/lib/pidfile.c
deleted file mode 100644 (file)
index 6e24d5f..0000000
--- a/lib/pidfile.c
+++ /dev/null
@@ -1,133 +0,0 @@
-/*
-    pidfile.c - interact with pidfiles
-    Copyright (c) 1995  Martin Schulze <Martin.Schulze@Linux.DE>
-
-    This file is part of the sysklogd package, a kernel and system log daemon.
-
-    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 2 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, write to the Free Software Foundation, Inc.,
-    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-*/
-
-/* left unaltered for tinc -- Ivo Timmermans */
-/*
- * Sat Aug 19 13:24:33 MET DST 1995: Martin Schulze
- *     First version (v0.2) released
- */
-
-#include "system.h"
-
-#include "pidfile.h"
-
-#ifndef HAVE_MINGW
-/* read_pid
- *
- * Reads the specified pidfile and returns the read pid.
- * 0 is returned if either there's no pidfile, it's empty
- * or no pid can be read.
- */
-pid_t read_pid (const char *pidfile)
-{
-  FILE *f;
-  long pid;
-
-  if (!(f=fopen(pidfile,"r")))
-    return 0;
-  if(fscanf(f,"%20ld", &pid) != 1)
-    pid = 0;
-  fclose(f);
-  return pid;
-}
-
-/* check_pid
- *
- * Reads the pid using read_pid and looks up the pid in the process
- * table (using /proc) to determine if the process already exists. If
- * so the pid is returned, otherwise 0.
- */
-pid_t check_pid (const char *pidfile)
-{
-  pid_t pid = read_pid(pidfile);
-
-  /* Amazing ! _I_ am already holding the pid file... */
-  if ((!pid) || (pid == getpid ()))
-    return 0;
-
-  /*
-   * The 'standard' method of doing this is to try and do a 'fake' kill
-   * of the process.  If an ESRCH error is returned the process cannot
-   * be found -- GW
-   */
-  /* But... errno is usually changed only on error.. */
-  errno = 0;
-  if (kill(pid, 0) && errno == ESRCH)
-         return 0;
-
-  return pid;
-}
-
-/* write_pid
- *
- * Writes the pid to the specified file. If that fails 0 is
- * returned, otherwise the pid.
- */
-pid_t write_pid (const char *pidfile)
-{
-  FILE *f;
-  int fd;
-  pid_t pid;
-
-  if ((fd = open(pidfile, O_RDWR|O_CREAT, 0644)) == -1) {
-      return 0;
-  }
-
-  if ((f = fdopen(fd, "r+")) == NULL) {
-      close(fd);
-      return 0;
-  }
-  
-#ifdef HAVE_FLOCK
-  if (flock(fd, LOCK_EX|LOCK_NB) == -1) {
-      fclose(f);
-      return 0;
-  }
-#endif
-
-  pid = getpid();
-  if (!fprintf(f,"%ld\n", (long)pid)) {
-      fclose(f);
-      return 0;
-  }
-  fflush(f);
-
-#ifdef HAVE_FLOCK
-  if (flock(fd, LOCK_UN) == -1) {
-      fclose(f);
-      return 0;
-  }
-#endif
-  fclose(f);
-
-  return pid;
-}
-
-/* remove_pid
- *
- * Remove the the specified file. The result from unlink(2)
- * is returned
- */
-int remove_pid (const char *pidfile)
-{
-  return unlink (pidfile);
-}
-#endif