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libbb: code shrink: introduce and use [_]exit_SUCCESS()

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function                                             old     new   delta
exit_SUCCESS                                           -       7      +7
_exit_SUCCESS                                          -       7      +7
run_pipe                                            1562    1567      +5
pseudo_exec_argv                                     399     400      +1
finish                                                86      87      +1
start_stop_daemon_main                              1109    1107      -2
shutdown_on_signal                                    38      36      -2
runsv_main                                          1662    1660      -2
redirect                                            1070    1068      -2
read_line                                             79      77      -2
pause_and_low_level_reboot                            54      52      -2
list_i2c_busses_and_exit                             483     481      -2
less_exit                                             12      10      -2
identify                                            4123    4121      -2
grep_file                                           1161    1159      -2
getty_main                                          1519    1517      -2
fsck_minix_main                                     2681    2679      -2
free_session                                         132     130      -2
fdisk_main                                          4739    4737      -2
clean_up_and_exit                                     53      51      -2
bsd_select                                          1566    1564      -2
bb_daemonize_or_rexec                                198     196      -2
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 3/17 up/down: 21/-34)           Total: -13 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2022-01-05 22:16:06 +01:00
parent 076f5e064f
commit db5546ca10
24 changed files with 45 additions and 33 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
debianutils/start_stop_daemon.c
View File

@ -519,7 +519,7 @@ int start_stop_daemon_main(int argc UNUSED_PARAM, char **argv)
/* why _exit? the child may have changed the stack,
* so "return 0" may do bad things
*/
_exit(EXIT_SUCCESS);
_exit_SUCCESS();
}
/* Child */
setsid(); /* detach from controlling tty */
@ -531,7 +531,7 @@ int start_stop_daemon_main(int argc UNUSED_PARAM, char **argv)
*/
pid = xvfork();
if (pid != 0)
_exit(EXIT_SUCCESS); /* Parent */
_exit_SUCCESS(); /* Parent */
}
if (opt & OPT_MAKEPID) {
/* User wants _us_ to make the pidfile */

2
findutils/grep.c
View File

@ -470,7 +470,7 @@ static int grep_file(FILE *file)
* "exit immediately with zero status
* if any match is found,
* even if errors were detected" */
exit(EXIT_SUCCESS);
exit_SUCCESS();
}
/* -l "print filenames with matches": stop after the first match */
if (option_mask32 & OPT_l) {

2
include/libbb.h
View File

@ -1278,6 +1278,8 @@ void set_task_comm(const char *comm) FAST_FUNC;
# define re_execed_comm() 0
# define set_task_comm(name) ((void)0)
#endif
void exit_SUCCESS(void) NORETURN FAST_FUNC;
void _exit_SUCCESS(void) NORETURN FAST_FUNC;
/* Helpers for daemonization.
*

6
init/init.c
View File

@ -744,7 +744,7 @@ static void pause_and_low_level_reboot(unsigned magic)
pid = vfork();
if (pid == 0) { /* child */
reboot(magic);
_exit(EXIT_SUCCESS);
_exit_SUCCESS();
}
/* Used to have "while (1) sleep(1)" here.
* However, in containers reboot() call is ignored, and with that loop
@ -752,7 +752,7 @@ static void pause_and_low_level_reboot(unsigned magic)
*/
waitpid(pid, NULL, 0);
sleep1(); /* paranoia */
_exit(EXIT_SUCCESS);
_exit_SUCCESS();
}
static void run_shutdown_and_kill_processes(void)
@ -942,7 +942,7 @@ static void reload_inittab(void)
for (a = G.init_action_list; a; a = a->next)
if (a->action_type == 0 && a->pid != 0)
kill(a->pid, SIGKILL);
_exit(EXIT_SUCCESS);
_exit_SUCCESS();
}
}
#endif

4
libbb/vfork_daemon_rexec.c
View File

@ -308,7 +308,7 @@ void FAST_FUNC bb_daemonize_or_rexec(int flags, char **argv)
/* fflush_all(); - add it in fork_or_rexec() if necessary */
if (fork_or_rexec(argv))
_exit(EXIT_SUCCESS); /* parent */
_exit_SUCCESS(); /* parent */
/* if daemonizing, detach from stdio & ctty */
setsid();
dup2(fd, 0);
@ -320,7 +320,7 @@ void FAST_FUNC bb_daemonize_or_rexec(int flags, char **argv)
// * Prevent this: stop being a session leader.
// */
// if (fork_or_rexec(argv))
// _exit(EXIT_SUCCESS); /* parent */
// _exit_SUCCESS(); /* parent */
// }
}
while (fd > 2) {

10
libbb/xfuncs.c
View File

@ -423,3 +423,13 @@ int FAST_FUNC wait4pid(pid_t pid)
return WTERMSIG(status) + 0x180;
return 0;
}
void FAST_FUNC exit_SUCCESS(void)
{
exit(EXIT_SUCCESS);
}
void FAST_FUNC _exit_SUCCESS(void)
{
_exit(EXIT_SUCCESS);
}

6
loginutils/getty.c
View File

@ -484,7 +484,7 @@ static char *get_logname(void)
if (read(STDIN_FILENO, &c, 1) < 1) {
finalize_tty_attrs();
if (errno == EINTR || errno == EIO)
exit(EXIT_SUCCESS);
exit_SUCCESS();
bb_simple_perror_msg_and_die(bb_msg_read_error);
}
@ -511,7 +511,7 @@ static char *get_logname(void)
case CTL('C'):
case CTL('D'):
finalize_tty_attrs();
exit(EXIT_SUCCESS);
exit_SUCCESS();
case '\0':
/* BREAK. If we have speeds to try,
* return NULL (will switch speeds and return here) */
@ -538,7 +538,7 @@ static char *get_logname(void)
static void alarm_handler(int sig UNUSED_PARAM)
{
finalize_tty_attrs();
_exit(EXIT_SUCCESS);
_exit_SUCCESS();
}
static void sleep10(void)

2
loginutils/login.c
View File

@ -312,7 +312,7 @@ static void alarm_handler(int sig UNUSED_PARAM)
/* unix API is brain damaged regarding O_NONBLOCK,
* we should undo it, or else we can affect other processes */
ndelay_off(STDOUT_FILENO);
_exit(EXIT_SUCCESS);
_exit_SUCCESS();
}
int login_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;

4
miscutils/devfsd.c
View File

@ -453,7 +453,7 @@ int devfsd_main(int argc, char **argv)
DEVFSD_PROTOCOL_REVISION_DAEMON, bb_msg_proto_rev, proto_rev);
if (DEVFSD_PROTOCOL_REVISION_DAEMON != proto_rev)
bb_error_msg_and_die("%s mismatch!", bb_msg_proto_rev);
exit(EXIT_SUCCESS); /* -v */
exit_SUCCESS(); /* -v */
}
/* Tell kernel we are special(i.e. we get to see hidden entries) */
xioctl(fd, DEVFSDIOC_SET_EVENT_MASK, 0);
@ -474,7 +474,7 @@ int devfsd_main(int argc, char **argv)
dir_operation(SERVICE, mount_point, 0, NULL);
if (ENABLE_DEVFSD_FG_NP && no_polling)
exit(EXIT_SUCCESS);
exit_SUCCESS();
if (ENABLE_DEVFSD_VERBOSE || ENABLE_DEBUG)
logmode = LOGMODE_BOTH;

2
miscutils/hdparm.c
View File

@ -1271,7 +1271,7 @@ static void identify(uint16_t *val)
}
}
exit(EXIT_SUCCESS);
exit_SUCCESS();
}
#endif

2
miscutils/i2c_tools.c
View File

@ -1212,7 +1212,7 @@ static void NORETURN list_i2c_busses_and_exit(void)
}
}
exit(EXIT_SUCCESS);
exit_SUCCESS();
}
static void NORETURN no_support(const char *cmd)

4
miscutils/less.c
View File

@ -333,10 +333,10 @@ static void restore_tty(void)
clear_line();
}
static void less_exit(void)
static NOINLINE void less_exit(void)
{
restore_tty();
exit(EXIT_SUCCESS);
exit_SUCCESS();
}
#if (ENABLE_FEATURE_LESS_DASHCMD && ENABLE_FEATURE_LESS_LINENUMS) \

2
miscutils/watchdog.c
View File

@ -76,7 +76,7 @@ static void shutdown_on_signal(int sig UNUSED_PARAM)
{
remove_pidfile_std_path_and_ext("watchdog");
shutdown_watchdog();
_exit(EXIT_SUCCESS);
_exit_SUCCESS();
}
static void watchdog_open(const char* device)

2
modutils/modprobe-small.c
View File

@ -415,7 +415,7 @@ static FAST_FUNC int fileAction(struct recursive_state *state,
/* Load was successful, there is nothing else to do.
* This can happen ONLY for "top-level" module load,
* not a dep, because deps don't do dirscan. */
exit(EXIT_SUCCESS);
exit_SUCCESS();
}
}

2
networking/arping.c
View File

@ -159,7 +159,7 @@ static void finish(void)
if (option_mask32 & DAD)
exit(!!received);
if (option_mask32 & UNSOLICITED)
exit(EXIT_SUCCESS);
exit_SUCCESS();
exit(!received);
}

2
networking/inetd.c
View File

@ -1208,7 +1208,7 @@ static void clean_up_and_exit(int sig UNUSED_PARAM)
close(sep->se_fd);
}
remove_pidfile_std_path_and_ext("inetd");
exit(EXIT_SUCCESS);
exit_SUCCESS();
}
int inetd_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;

2
networking/nc.c
View File

@ -268,7 +268,7 @@ int nc_main(int argc, char **argv)
nread = safe_read(pfds[fdidx].fd, iobuf, COMMON_BUFSIZE);
if (fdidx != 0) {
if (nread < 1)
exit(EXIT_SUCCESS);
exit_SUCCESS();
ofd = STDOUT_FILENO;
} else {
if (nread < 1) {

2
networking/telnetd.c
View File

@ -582,7 +582,7 @@ free_session(struct tsession *ts)
struct tsession *t;
if (option_mask32 & OPT_INETD)
exit(EXIT_SUCCESS);
exit_SUCCESS();
/* Unlink this telnet session from the session list */
t = G.sessions;

2
runit/runsv.c
View File

@ -700,7 +700,7 @@ int runsv_main(int argc UNUSED_PARAM, char **argv)
if (svd[0].sd_want == W_EXIT && svd[0].state == S_DOWN) {
if (svd[1].pid == 0)
_exit(EXIT_SUCCESS);
_exit_SUCCESS();
if (svd[1].sd_want != W_EXIT) {
svd[1].sd_want = W_EXIT;
/* stopservice(&svd[1]); */

2
shell/ash.c
View File

@ -5505,7 +5505,7 @@ openhere(union node *redir)
ignoresig(SIGTSTP); //signal(SIGTSTP, SIG_IGN);
signal(SIGPIPE, SIG_DFL);
xwrite(pip[1], p, len);
_exit(EXIT_SUCCESS);
_exit_SUCCESS();
}
out:
close(pip[1]);

4
shell/hush.c
View File

@ -8587,7 +8587,7 @@ static NOINLINE void pseudo_exec_argv(nommu_save_t *nommu_save,
* expand_assignments(): think about ... | var=`sleep 1` | ...
*/
free_strings(new_env);
_exit(EXIT_SUCCESS);
_exit_SUCCESS();
}
sv_shadowed = G.shadowed_vars_pp;
@ -8768,7 +8768,7 @@ static void pseudo_exec(nommu_save_t *nommu_save,
/* Case when we are here: ... | >file */
debug_printf_exec("pseudo_exec'ed null command\n");
_exit(EXIT_SUCCESS);
_exit_SUCCESS();
}
#if ENABLE_HUSH_JOB

4
util-linux/fdisk.c
View File

@ -665,7 +665,7 @@ read_line(const char *prompt)
sz = read_line_input(NULL, prompt, line_buffer, sizeof(line_buffer));
if (sz <= 0)
exit(EXIT_SUCCESS); /* Ctrl-D or Ctrl-C */
exit_SUCCESS(); /* Ctrl-D or Ctrl-C */
if (line_buffer[sz-1] == '\n')
line_buffer[--sz] = '\0';
@ -2855,7 +2855,7 @@ xselect(void)
if (ENABLE_FEATURE_CLEAN_UP)
close_dev_fd();
bb_putchar('\n');
exit(EXIT_SUCCESS);
exit_SUCCESS();
case 'r':
return;
case 's':

4
util-linux/fdisk_osf.c
View File

@ -383,7 +383,7 @@ bsd_select(void)
if (xbsd_readlabel(NULL) == 0)
if (xbsd_create_disklabel() == 0)
exit(EXIT_SUCCESS);
exit_SUCCESS();
#endif
@ -411,7 +411,7 @@ bsd_select(void)
case 'q':
if (ENABLE_FEATURE_CLEAN_UP)
close_dev_fd();
exit(EXIT_SUCCESS);
exit_SUCCESS();
case 'r':
return;
case 's':

2
util-linux/fsck_minix.c
View File

@ -423,7 +423,7 @@ static void check_mount(void)
cont = ask("Do you really want to continue", 0);
if (!cont) {
puts("Check aborted");
exit(EXIT_SUCCESS);
exit_SUCCESS();
}
}
}