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

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>

2 files changed, 4 insertions, 4 deletions

diff --git a/loginutils/getty.c b/loginutils/getty.c
index 6c6d409f4..cd6378d80 100644
--- a/loginutils/getty.c
+++ b/loginutils/getty.c
@@ -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)
diff --git a/loginutils/login.c b/loginutils/login.c
index ce87e318a..569053c12 100644
--- a/loginutils/login.c
+++ b/loginutils/login.c
@@ -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;