hush/networking/udhcp/common.c
Denis Vlasenko fbd2918f5c udhcp: MAC_BCAST_ADDR and blank_chaddr are in fact constant, move to rodata.
a few global variables reduced to smallints
function                                             old     new   delta
add_lease                                             75     227    +152
static.blank_chaddr                                    -      16     +16
MAC_BCAST_ADDR                                         -       6      +6
sockfd                                                 4       8      +4
udhcp_run_script                                    1153    1155      +2
state                                                  8       5      -3
listen_mode                                            4       1      -3
perform_release                                      152     148      -4
fd                                                     8       4      -4
blank_chaddr                                          16       -     -16
udhcpc_main                                         2518    2497     -21
.rodata                                           131864  131832     -32
oldest_expired_lease                                  61       -     -61
clear_lease                                          127       -    -127
------------------------------------------------------------------------------
(add/remove: 2/3 grow/shrink: 3/6 up/down: 180/-271)          Total: -91 bytes
2007-04-07 01:05:47 +00:00

67 lines
1.3 KiB
C

/* 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"
const uint8_t MAC_BCAST_ADDR[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
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);
}