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/slattach.c b/networking/slattach.c
index 17df4fa..e501d82 100644
--- a/networking/slattach.c
+++ b/networking/slattach.c
@@ -175,10 +175,12 @@
/* Trap signals in order to restore tty states upon exit */
if (!(opt & OPT_e_quit)) {
- signal(SIGHUP, sig_handler);
- signal(SIGINT, sig_handler);
- signal(SIGQUIT, sig_handler);
- signal(SIGTERM, sig_handler);
+ bb_signals(0
+ + (1 << SIGHUP)
+ + (1 << SIGINT)
+ + (1 << SIGQUIT)
+ + (1 << SIGTERM)
+ , sig_handler);
}
/* Open tty */