diff options
| -rw-r--r-- | networking/udhcp/pidfile.c | 60 |
1 files changed, 0 insertions, 60 deletions
diff --git a/networking/udhcp/pidfile.c b/networking/udhcp/pidfile.c deleted file mode 100644 index be65d5fc9..000000000 --- a/networking/udhcp/pidfile.c +++ /dev/null @@ -1,60 +0,0 @@ -/* vi: set sw=4 ts=4: */ -/* pidfile.c - * - * Functions to assist in the writing and removing of pidfiles. - * - * Russ Dill <Russ.Dill@asu.edu> September 2001 - * - * 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., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include "common.h" - - -static const char *saved_pidfile; - -static void pidfile_delete(void) -{ - if (saved_pidfile) unlink(saved_pidfile); -} - - -int pidfile_acquire(const char *pidfile) -{ - int pid_fd; - if (!pidfile) return -1; - - pid_fd = open(pidfile, O_CREAT|O_WRONLY|O_TRUNC, 0644); - if (pid_fd < 0) { - bb_perror_msg("cannot open pidfile %s", pidfile); - } else { - lockf(pid_fd, F_LOCK, 0); - if (!saved_pidfile) - atexit(pidfile_delete); - saved_pidfile = pidfile; - } - - return pid_fd; -} - - -void pidfile_write_release(int pid_fd) -{ - if (pid_fd < 0) return; - - fdprintf(pid_fd, "%d\n", getpid()); - lockf(pid_fd, F_UNLCK, 0); - close(pid_fd); -} |