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/* vi: set sw=4 ts=4: */
/* common.c
*
* Functions for debugging and logging as well as some other
* simple helper functions.
*
* Russ Dill <Russ.Dill@asu.edu> 2001-2003
* Rewritten by Vladimir Oleynik <dzo@simtreas.ru> (C) 2003
*
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
#include <syslog.h>
#include "common.h"
long uptime(void)
{
struct sysinfo info;
sysinfo(&info);
return info.uptime;
}
#if ENABLE_FEATURE_PIDFILE
static const char *saved_pidfile;
static void pidfile_delete(void)
{
if (saved_pidfile)
remove_pidfile(saved_pidfile);
}
#endif
static void create_pidfile(const char *pidfile)
{
if (!pidfile)
return;
if (!write_pidfile(pidfile)) {
bb_perror_msg("cannot create pidfile %s", pidfile);
return;
}
#if ENABLE_FEATURE_PIDFILE
/* lockf(pid_fd, F_LOCK, 0); */
if (!saved_pidfile)
atexit(pidfile_delete);
saved_pidfile = pidfile;
#endif
}
void udhcp_make_pidfile(const char *pidfile)
{
/* Make sure fd 0,1,2 are open */
bb_sanitize_stdio();
/* Equivalent of doing a fflush after every \n */
setlinebuf(stdout);
/* Create pidfile */
create_pidfile(pidfile);
bb_info_msg("%s (v%s) started", applet_name, BB_VER);
}
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