1 /* vi: set sw=4 ts=4: */
4 * Functions for debugging and logging as well as some other
5 * simple helper functions.
7 * Russ Dill <Russ.Dill@asu.edu> 2001-2003
8 * Rewritten by Vladimir Oleynik <dzo@simtreas.ru> (C) 2003
10 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
20 #include <sys/socket.h>
27 static int daemonized;
38 * This function makes sure our first socket calls
39 * aren't going to fd 1 (printf badness...) and are
40 * not later closed by daemon()
42 static inline void sanitize_fds(void)
45 if ((zero = open(_PATH_DEVNULL, O_RDWR, 0)) < 0) return;
46 while (zero < 3) zero = dup(zero);
51 void background(const char *pidfile)
54 LOG(LOG_ERR, "Cannot background in uclinux (yet)");
55 #else /* __uClinux__ */
58 /* hold lock during fork. */
59 pid_fd = pidfile_acquire(pidfile);
60 if (daemon(0, 0) == -1) { /* bb_xdaemon? */
65 pidfile_write_release(pid_fd);
66 #endif /* __uClinux__ */
72 void udhcp_logging(int level, const char *fmt, ...)
83 vsyslog(level, fmt, p2);
90 static char *syslog_level_msg[] = {
91 [LOG_EMERG] = "EMERGENCY!",
92 [LOG_ALERT] = "ALERT!",
93 [LOG_CRIT] = "critical!",
94 [LOG_WARNING] = "warning",
101 void udhcp_logging(int level, const char *fmt, ...)
107 printf("%s, ", syslog_level_msg[level]);
116 void start_log_and_pid(const char *client_server, const char *pidfile)
120 /* Make sure our syslog fd isn't overwritten */
123 /* do some other misc startup stuff while we are here to save bytes */
124 pid_fd = pidfile_acquire(pidfile);
125 pidfile_write_release(pid_fd);
127 /* equivelent of doing a fflush after every \n */
131 openlog(client_server, LOG_PID | LOG_CONS, LOG_LOCAL0);
134 udhcp_logging(LOG_INFO, "%s (v%s) started", client_server, VERSION);