runsv: robustify signal handling - SIGTERM to child between vfork and exec could mess things up

While at it, rename bb_signals_recursive_norestart() to bb_signals_norestart():
"recursive" was implying we are setting SA_NODEFER allowing signal handler
to be entered recursively, but we do not do that.

function                                             old     new   delta
bb_signals_norestart                                   -      70     +70
startservice                                         380     394     +14
bb_signals_recursive_norestart                        70       -     -70
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 1/0 up/down: 84/-70)             Total: 14 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/console-tools/showkey.c b/console-tools/showkey.c
index 4d7a9b9e5..84eb38a0a 100644
--- a/console-tools/showkey.c
+++ b/console-tools/showkey.c
@@ -106,7 +106,7 @@ int showkey_main(int argc UNUSED_PARAM, char **argv)
                 xioctl(STDIN_FILENO, KDSKBMODE, (void *)(ptrdiff_t)((option_mask32 & OPT_k) ? K_MEDIUMRAW : K_RAW));
 
                 // we should exit on any signal; signals should interrupt read
-                bb_signals_recursive_norestart(BB_FATAL_SIGS, record_signo);
+                bb_signals_norestart(BB_FATAL_SIGS, record_signo);
 
                 // inform user that program ends after time of inactivity
                 printf(press_keys, "10s after last keypress");