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| author | Denis Vlasenko | 2008-02-16 22:58:56 +0000 |
|---|---|---|
| committer | Denis Vlasenko | 2008-02-16 22:58:56 +0000 |
| commit | 25591c322c9305bd54d3ab80cfaf01ef87640d77 (patch) | |
| tree | 66ce77758e35f4faa2d5f611d0535365f2cba00a /init | |
| parent | 7fc294cdfe1e7f4a12c44f984a698b0c0f609075 (diff) | |
| download | busybox-25591c322c9305bd54d3ab80cfaf01ef87640d77.zip busybox-25591c322c9305bd54d3ab80cfaf01ef87640d77.tar.gz | |
libbb: introduce bb_signals and bb_signals_recursive,
which sets same handler for many signals. sig_catch is nuked
(bb_signals_recursive is more descriptive name).
*: use them as appropriate.
function old new delta
bb_signals_recursive - 95 +95
bb_signals - 52 +52
run_command 258 273 +15
svlogd_main 1368 1377 +9
runsv_main 1746 1752 +6
runsvdir_main 1643 1646 +3
UNSPEC_print 64 66 +2
time_main 1128 1127 -1
...
resize_main 246 210 -36
sig_catch 63 - -63
set_fatal_sighandler 85 14 -71
------------------------------------------------------------------------------
(add/remove: 2/1 grow/shrink: 5/24 up/down: 182/-548) Total: -366 bytes
Diffstat (limited to 'init')
| -rw-r--r-- | init/init.c | 48 |
1 files changed, 29 insertions, 19 deletions
diff --git a/init/init.c b/init/init.c index 9e24817..080c5b3 100644 --- a/init/init.c +++ b/init/init.c @@ -319,15 +319,17 @@ static pid_t run(const struct init_action *a) /* Child */ /* Reset signal handlers that were set by the parent process */ - signal(SIGUSR1, SIG_DFL); - signal(SIGUSR2, SIG_DFL); - signal(SIGINT, SIG_DFL); - signal(SIGTERM, SIG_DFL); - signal(SIGHUP, SIG_DFL); - signal(SIGQUIT, SIG_DFL); - signal(SIGCONT, SIG_DFL); - signal(SIGSTOP, SIG_DFL); - signal(SIGTSTP, SIG_DFL); + bb_signals(0 + + (1 << SIGUSR1) + + (1 << SIGUSR2) + + (1 << SIGINT) + + (1 << SIGTERM) + + (1 << SIGHUP) + + (1 << SIGQUIT) + + (1 << SIGCONT) + + (1 << SIGSTOP) + + (1 << SIGTSTP) + , SIG_DFL); /* Create a new session and make ourself the process * group leader */ @@ -349,9 +351,11 @@ static pid_t run(const struct init_action *a) if (pid > 0) { /* Parent - wait till the child is done */ - signal(SIGINT, SIG_IGN); - signal(SIGTSTP, SIG_IGN); - signal(SIGQUIT, SIG_IGN); + bb_signals(0 + + (1 << SIGINT) + + (1 << SIGTSTP) + + (1 << SIGQUIT) + , SIG_IGN); signal(SIGCHLD, SIG_DFL); waitfor(pid); @@ -864,15 +868,21 @@ int init_main(int argc, char **argv) } /* Set up sig handlers -- be sure to * clear all of these in run() */ - signal(SIGHUP, exec_restart_action); - signal(SIGQUIT, exec_restart_action); - signal(SIGUSR1, halt_reboot_pwoff); /* halt */ - signal(SIGUSR2, halt_reboot_pwoff); /* poweroff */ - signal(SIGTERM, halt_reboot_pwoff); /* reboot */ + bb_signals(0 + + (1 << SIGHUP) + + (1 << SIGQUIT) + , exec_restart_action); + bb_signals(0 + + (1 << SIGUSR1) /* halt */ + + (1 << SIGUSR2) /* poweroff */ + + (1 << SIGTERM) /* reboot */ + , halt_reboot_pwoff); signal(SIGINT, ctrlaltdel_signal); signal(SIGCONT, cont_handler); - signal(SIGSTOP, stop_handler); - signal(SIGTSTP, stop_handler); + bb_signals(0 + + (1 << SIGSTOP) + + (1 << SIGTSTP) + , stop_handler); /* Turn off rebooting via CTL-ALT-DEL -- we get a * SIGINT on CAD so we can shut things down gracefully... */ |