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
diff --git a/networking/sendmail.c b/networking/sendmail.c
index 63305d1..fa995ab 100644
--- a/networking/sendmail.c
+++ b/networking/sendmail.c
@@ -111,8 +111,10 @@
_exit(127);
}
// parent - check whether child is alive
- sig_catch(SIGCHLD, signal_handler);
- sig_catch(SIGALRM, signal_handler);
+ bb_signals_recursive(0
+ + (1 << SIGCHLD)
+ + (1 << SIGALRM)
+ , signal_handler);
signal_handler(SIGCHLD);
// child seems OK -> parent goes on
}