*: code shrink and better "died from signal" reporting from wait4pid

function                                             old     new   delta
parse                                                964     967      +3
udhcp_run_script                                     670     665      -5
singlemount                                          911     906      -5
mount_it_now                                         360     355      -5
inotifyd_main                                        521     516      -5
xspawn                                                21       -     -21
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 1/4 up/down: 3/-41)             Total: -38 bytes

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

4 files changed, 7 insertions, 7 deletions

diff --git a/networking/ifplugd.c b/networking/ifplugd.c
index ac6607c91..62b135524 100644
--- a/networking/ifplugd.c
+++ b/networking/ifplugd.c
@@ -132,10 +132,10 @@ static int run_script(const char *action)
 	argv[3] = (char*) G.extra_arg;
 	argv[4] = NULL;
 
-	/* r < 0 - can't exec, 0 <= r < 1000 - exited, >1000 - killed by sig (r-1000) */
-	r = wait4pid(spawn(argv));
+	/* r < 0 - can't exec, 0 <= r < 0x180 - exited, >=0x180 - killed by sig (r-0x180) */
+	r = spawn_and_wait(argv);
 
-	bb_error_msg("exit code: %d", r);
+	bb_error_msg("exit code: %d", r & 0xff);
 	return (option_mask32 & FLAG_IGNORE_RETVAL) ? 0 : r;
 
 #else /* insanity */
diff --git a/networking/ntpd.c b/networking/ntpd.c
index 04df3fa7f..6d9183a4b 100644
--- a/networking/ntpd.c
+++ b/networking/ntpd.c
@@ -772,7 +772,7 @@ static void run_script(const char *action, double offset)
 
 	/* Don't want to wait: it may run hwclock --systohc, and that
 	 * may take some time (seconds): */
-	/*wait4pid(spawn(argv));*/
+	/*spawn_and_wait(argv);*/
 	spawn(argv);
 
 	unsetenv("stratum");
diff --git a/networking/udhcp/script.c b/networking/udhcp/script.c
index 574c74f45..a74697c90 100644
--- a/networking/udhcp/script.c
+++ b/networking/udhcp/script.c
@@ -271,7 +271,7 @@ void FAST_FUNC udhcp_run_script(struct dhcp_packet *packet, const char *name)
 	argv[0] = (char*) client_config.script;
 	argv[1] = (char*) name;
 	argv[2] = NULL;
-	wait4pid(spawn(argv));
+	spawn_and_wait(argv);
 
 	for (curr = envp; *curr; curr++) {
 		log2(" %s", *curr);
diff --git a/networking/zcip.c b/networking/zcip.c
index db10d0a26..6b0b1c491 100644
--- a/networking/zcip.c
+++ b/networking/zcip.c
@@ -160,13 +160,13 @@ static int run(char *argv[3], const char *param, struct in_addr *ip)
 	}
 	bb_info_msg(fmt, argv[2], argv[0], addr);
 
-	status = wait4pid(spawn(argv + 1));
+	status = spawn_and_wait(argv + 1);
 	if (status < 0) {
 		bb_perror_msg("%s %s %s" + 3, argv[2], argv[0]);
 		return -errno;
 	}
 	if (status != 0)
-		bb_error_msg("script %s %s failed, exitcode=%d", argv[1], argv[2], status);
+		bb_error_msg("script %s %s failed, exitcode=%d", argv[1], argv[2], status & 0xff);
 	return status;
 }