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start_stop_daemon: make code a bit more readable

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This commit is contained in:
Denis Vlasenko 2006-12-17 19:43:10 +00:00
parent 0f5905e617
commit b8c77b5b25
1 changed files with 19 additions and 23 deletions
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42
debianutils/start_stop_daemon.c
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@ -194,7 +194,7 @@ static int do_stop(void)
} }
#if ENABLE_FEATURE_START_STOP_DAEMON_LONG_OPTIONS #if ENABLE_FEATURE_START_STOP_DAEMON_LONG_OPTIONS
static const struct option ssd_long_options[] = { static const struct option long_options[] = {
{ "stop", 0, NULL, 'K' }, { "stop", 0, NULL, 'K' },
{ "start", 0, NULL, 'S' }, { "start", 0, NULL, 'S' },
{ "background", 0, NULL, 'b' }, { "background", 0, NULL, 'b' },
@ -219,16 +219,16 @@ static const struct option ssd_long_options[] = {
}; };
#endif #endif
#define SSD_CTX_STOP 0x1 enum {
#define SSD_CTX_START 0x2 CTX_STOP = 0x1,
#define SSD_OPT_BACKGROUND 0x4 CTX_START = 0x2,
#define SSD_OPT_QUIET 0x8 OPT_BACKGROUND = 0x4,
#define SSD_OPT_MAKEPID 0x10 OPT_QUIET = 0x8,
#if ENABLE_FEATURE_START_STOP_DAEMON_FANCY OPT_MAKEPID = 0x10,
#define SSD_OPT_OKNODO 0x20 OPT_OKNODO = 0x20 * ENABLE_FEATURE_START_STOP_DAEMON_FANCY,
#define SSD_OPT_VERBOSE 0x40 OPT_VERBOSE = 0x40 * ENABLE_FEATURE_START_STOP_DAEMON_FANCY,
#define SSD_OPT_NICELEVEL 0x80 OPT_NICELEVEL = 0x80 * ENABLE_FEATURE_START_STOP_DAEMON_FANCY,
#endif };
int start_stop_daemon_main(int argc, char **argv) int start_stop_daemon_main(int argc, char **argv)
{ {
@ -241,7 +241,7 @@ int start_stop_daemon_main(int argc, char **argv)
char *opt_N; char *opt_N;
#endif #endif
#if ENABLE_FEATURE_START_STOP_DAEMON_LONG_OPTIONS #if ENABLE_FEATURE_START_STOP_DAEMON_LONG_OPTIONS
applet_long_options = ssd_long_options; applet_long_options = long_options;
#endif #endif
/* Check required one context option was given */ /* Check required one context option was given */
@ -254,8 +254,7 @@ int start_stop_daemon_main(int argc, char **argv)
// USE_FEATURE_START_STOP_DAEMON_FANCY(,&retry_arg) // USE_FEATURE_START_STOP_DAEMON_FANCY(,&retry_arg)
,&startas, &cmdname, &signame, &userspec, &chuid, &execname, &pidfile); ,&startas, &cmdname, &signame, &userspec, &chuid, &execname, &pidfile);
quiet = (opt & SSD_OPT_QUIET) quiet = (opt & OPT_QUIET) && !(opt & OPT_VERBOSE);
USE_FEATURE_START_STOP_DAEMON_FANCY(&& !(opt & SSD_OPT_VERBOSE));
if (signame) { if (signame) {
signal_nr = get_signum(signame); signal_nr = get_signum(signame);
@ -278,11 +277,9 @@ int start_stop_daemon_main(int argc, char **argv)
user_id = bb_xgetpwnam(userspec); user_id = bb_xgetpwnam(userspec);
} }
if (opt & SSD_CTX_STOP) { if (opt & CTX_STOP) {
int i = do_stop(); int i = do_stop();
return return (opt & OPT_OKNODO) ? 0 : (i<=0);
USE_FEATURE_START_STOP_DAEMON_FANCY((opt & SSD_OPT_OKNODO)
? 0 :) !!(i<=0);
} }
do_procinit(); do_procinit();
@ -290,15 +287,14 @@ int start_stop_daemon_main(int argc, char **argv)
if (found) { if (found) {
if (!quiet) if (!quiet)
printf("%s already running\n%d\n", execname, found->pid); printf("%s already running\n%d\n", execname, found->pid);
USE_FEATURE_START_STOP_DAEMON_FANCY(return !(opt & SSD_OPT_OKNODO);) return !(opt & OPT_OKNODO);
SKIP_FEATURE_START_STOP_DAEMON_FANCY(return EXIT_FAILURE;)
} }
*--argv = startas; *--argv = startas;
if (opt & SSD_OPT_BACKGROUND) { if (opt & OPT_BACKGROUND) {
xdaemon(0, 0); xdaemon(0, 0);
setsid(); setsid();
} }
if (opt & SSD_OPT_MAKEPID) { if (opt & OPT_MAKEPID) {
/* user wants _us_ to make the pidfile */ /* user wants _us_ to make the pidfile */
FILE *pidf = xfopen(pidfile, "w"); FILE *pidf = xfopen(pidfile, "w");
@ -313,7 +309,7 @@ int start_stop_daemon_main(int argc, char **argv)
xsetuid(user_id); xsetuid(user_id);
} }
#if ENABLE_FEATURE_START_STOP_DAEMON_FANCY #if ENABLE_FEATURE_START_STOP_DAEMON_FANCY
if (opt & SSD_OPT_NICELEVEL) { if (opt & OPT_NICELEVEL) {
/* Set process priority */ /* Set process priority */
int prio = getpriority(PRIO_PROCESS, 0) + xatoi_range(opt_N, INT_MIN/2, INT_MAX/2); int prio = getpriority(PRIO_PROCESS, 0) + xatoi_range(opt_N, INT_MIN/2, INT_MAX/2);
if (setpriority(PRIO_PROCESS, 0, prio) < 0) { if (setpriority(PRIO_PROCESS, 0, prio) < 0) {