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/telnetd.c b/networking/telnetd.c
index 962e5cc..0bffa97 100644
--- a/networking/telnetd.c
+++ b/networking/telnetd.c
@@ -279,8 +279,7 @@
setsid();
/* Restore default signal handling */
- signal(SIGCHLD, SIG_DFL);
- signal(SIGPIPE, SIG_DFL);
+ bb_signals((1 << SIGCHLD) + (1 << SIGPIPE), SIG_DFL);
/* open the child's side of the tty. */
/* NB: setsid() disconnects from any previous ctty's. Therefore