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

26 files changed, 249 insertions, 154 deletions

diff --git a/console-tools/resize.c b/console-tools/resize.c
index b4cdf50d0..7f72b9a46 100644
--- a/console-tools/resize.c
+++ b/console-tools/resize.c
@@ -37,10 +37,12 @@ int resize_main(int argc, char **argv)
         new = old_termios;
         new.c_cflag |= (CLOCAL | CREAD);
         new.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG);
-        signal(SIGINT, onintr);
-        signal(SIGQUIT, onintr);
-        signal(SIGTERM, onintr);
-        signal(SIGALRM, onintr);
+        bb_signals(0
+                + (1 << SIGINT)
+                + (1 << SIGQUIT)
+                + (1 << SIGTERM)
+                + (1 << SIGALRM)
+                , onintr);
         tcsetattr(STDERR_FILENO, TCSANOW, &new);
 
         /* save_cursor_pos 7
diff --git a/coreutils/tee.c b/coreutils/tee.c
index 13fb4a3c1..b38801755 100644
--- a/coreutils/tee.c
+++ b/coreutils/tee.c
@@ -36,12 +36,12 @@ int tee_main(int argc, char **argv)
         mode += (retval & 2);   /* Since 'a' is the 2nd option... */
 
         if (retval & 1) {
-                signal(SIGINT, SIG_IGN); /* TODO - switch to sigaction. */
+                signal(SIGINT, SIG_IGN); /* TODO - switch to sigaction. (why?) */
         }
         retval = EXIT_SUCCESS;
         /* gnu tee ignores SIGPIPE in case one of the output files is a pipe
          * that doesn't consume all its input.  Good idea... */
-        signal(SIGPIPE, SIG_IGN);       /* TODO - switch to sigaction. */
+        signal(SIGPIPE, SIG_IGN);
 
         /* Allocate an array of FILE *'s, with one extra for a sentinal. */
         fp = files = xzalloc(sizeof(FILE *) * (argc + 2));
diff --git a/include/libbb.h b/include/libbb.h
index f505cc718..67afcdf94 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -274,14 +274,18 @@ char *xrealloc_getcwd_or_warn(char *cwd);
 
 char *xmalloc_follow_symlinks(const char *path);
 
-//TODO: signal(sid, f) is the same? then why?
-extern void sig_catch(int,void (*)(int));
-//#define sig_ignore(s) (sig_catch((s), SIG_IGN))
-//#define sig_uncatch(s) (sig_catch((s), SIG_DFL))
-extern void sig_block(int);
-extern void sig_unblock(int);
-/* UNUSED: extern void sig_blocknone(void); */
-extern void sig_pause(void);
+//enum {
+//      BB_SIGS_FATAL = ,
+//};
+void bb_signals(int sigs, void (*f)(int));
+/* Unlike signal() and bb_signals, sets handler with sigaction()
+ * and in a way that while signal handler is run, no other signals
+ * will be blocked: */
+void bb_signals_recursive(int sigs, void (*f)(int));
+void sig_block(int);
+void sig_unblock(int);
+/* UNUSED: void sig_blocknone(void); */
+void sig_pause(void);
 
 
 void xsetgid(gid_t gid);
diff --git a/init/init.c b/init/init.c
index 9e24817b7..080c5b3af 100644
--- a/init/init.c
+++ b/init/init.c
@@ -319,15 +319,17 @@ static pid_t run(const struct init_action *a)
         /* Child */
 
         /* Reset signal handlers that were set by the parent process */
-        signal(SIGUSR1, SIG_DFL);
-        signal(SIGUSR2, SIG_DFL);
-        signal(SIGINT, SIG_DFL);
-        signal(SIGTERM, SIG_DFL);
-        signal(SIGHUP, SIG_DFL);
-        signal(SIGQUIT, SIG_DFL);
-        signal(SIGCONT, SIG_DFL);
-        signal(SIGSTOP, SIG_DFL);
-        signal(SIGTSTP, SIG_DFL);
+        bb_signals(0
+                + (1 << SIGUSR1)
+                + (1 << SIGUSR2)
+                + (1 << SIGINT)
+                + (1 << SIGTERM)
+                + (1 << SIGHUP)
+                + (1 << SIGQUIT)
+                + (1 << SIGCONT)
+                + (1 << SIGSTOP)
+                + (1 << SIGTSTP)
+                , SIG_DFL);
 
         /* Create a new session and make ourself the process
          * group leader */
@@ -349,9 +351,11 @@ static pid_t run(const struct init_action *a)
 
                 if (pid > 0) {
                         /* Parent - wait till the child is done */
-                        signal(SIGINT, SIG_IGN);
-                        signal(SIGTSTP, SIG_IGN);
-                        signal(SIGQUIT, SIG_IGN);
+                        bb_signals(0
+                                + (1 << SIGINT)
+                                + (1 << SIGTSTP)
+                                + (1 << SIGQUIT)
+                                , SIG_IGN);
                         signal(SIGCHLD, SIG_DFL);
 
                         waitfor(pid);
@@ -864,15 +868,21 @@ int init_main(int argc, char **argv)
                 }
                 /* Set up sig handlers  -- be sure to
                  * clear all of these in run() */
-                signal(SIGHUP, exec_restart_action);
-                signal(SIGQUIT, exec_restart_action);
-                signal(SIGUSR1, halt_reboot_pwoff); /* halt */
-                signal(SIGUSR2, halt_reboot_pwoff); /* poweroff */
-                signal(SIGTERM, halt_reboot_pwoff); /* reboot */
+                bb_signals(0
+                        + (1 << SIGHUP)
+                        + (1 << SIGQUIT)
+                        , exec_restart_action);
+                bb_signals(0
+                        + (1 << SIGUSR1)  /* halt */
+                        + (1 << SIGUSR2)  /* poweroff */
+                        + (1 << SIGTERM)  /* reboot */
+                        , halt_reboot_pwoff);
                 signal(SIGINT, ctrlaltdel_signal);
                 signal(SIGCONT, cont_handler);
-                signal(SIGSTOP, stop_handler);
-                signal(SIGTSTP, stop_handler);
+                bb_signals(0
+                        + (1 << SIGSTOP)
+                        + (1 << SIGTSTP)
+                        , stop_handler);
 
                 /* Turn off rebooting via CTL-ALT-DEL -- we get a
                  * SIGINT on CAD so we can shut things down gracefully... */
diff --git a/libbb/Kbuild b/libbb/Kbuild
index 2fb1b2420..515368de7 100644
--- a/libbb/Kbuild
+++ b/libbb/Kbuild
@@ -78,6 +78,7 @@ lib-y += safe_strncpy.o
 lib-y += safe_write.o
 lib-y += setup_environment.o
 lib-y += sha1.o
+lib-y += signals.o
 lib-y += simplify_path.o
 lib-y += skip_whitespace.o
 lib-y += speed_table.o
diff --git a/libbb/signals.c b/libbb/signals.c
new file mode 100644
index 000000000..f7e4908e7
--- /dev/null
+++ b/libbb/signals.c
@@ -0,0 +1,80 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Utility routines.
+ *
+ * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
+ * Copyright (C) 2006 Rob Landley
+ * Copyright (C) 2006 Denis Vlasenko
+ *
+ * Licensed under GPL version 2, see file LICENSE in this tarball for details.
+ */
+
+#include "libbb.h"
+
+void bb_signals(int sigs, void (*f)(int))
+{
+        int sig_no = 0;
+        int bit = 1;
+
+        while (sigs) {
+                if (sigs & bit) {
+                        sigs &= ~bit;
+                        signal(sig_no, f);
+                }
+                sig_no++;
+                bit <<= 1;
+        }
+}
+
+void bb_signals_recursive(int sigs, void (*f)(int))
+{
+        int sig_no = 0;
+        int bit = 1;
+        struct sigaction sa;
+
+        memset(&sa, 0, sizeof(sa));
+        sa.sa_handler = f;
+        /*sa.sa_flags = 0;*/
+        /*sigemptyset(&sa.sa_mask); - hope memset did it*/
+
+        while (sigs) {
+                if (sigs & bit) {
+                        sigs &= ~bit;
+                        sigaction(sig_no, &sa, NULL);
+                }
+                sig_no++;
+                bit <<= 1;
+        }
+}
+
+void sig_block(int sig)
+{
+        sigset_t ss;
+        sigemptyset(&ss);
+        sigaddset(&ss, sig);
+        sigprocmask(SIG_BLOCK, &ss, NULL);
+}
+
+void sig_unblock(int sig)
+{
+        sigset_t ss;
+        sigemptyset(&ss);
+        sigaddset(&ss, sig);
+        sigprocmask(SIG_UNBLOCK, &ss, NULL);
+}
+
+#if 0
+void sig_blocknone(void)
+{
+        sigset_t ss;
+        sigemptyset(&ss);
+        sigprocmask(SIG_SETMASK, &ss, NULL);
+}
+#endif
+
+void sig_pause(void)
+{
+        sigset_t ss;
+        sigemptyset(&ss);
+        sigsuspend(&ss);
+}
diff --git a/libbb/xfuncs.c b/libbb/xfuncs.c
index 445e07717..8dd414d6a 100644
--- a/libbb/xfuncs.c
+++ b/libbb/xfuncs.c
@@ -234,48 +234,6 @@ void xfflush_stdout(void)
         }
 }
 
-void sig_block(int sig)
-{
-        sigset_t ss;
-        sigemptyset(&ss);
-        sigaddset(&ss, sig);
-        sigprocmask(SIG_BLOCK, &ss, NULL);
-}
-
-void sig_unblock(int sig)
-{
-        sigset_t ss;
-        sigemptyset(&ss);
-        sigaddset(&ss, sig);
-        sigprocmask(SIG_UNBLOCK, &ss, NULL);
-}
-
-#if 0
-void sig_blocknone(void)
-{
-        sigset_t ss;
-        sigemptyset(&ss);
-        sigprocmask(SIG_SETMASK, &ss, NULL);
-}
-#endif
-
-void sig_catch(int sig, void (*f)(int))
-{
-        struct sigaction sa;
-        sa.sa_handler = f;
-        sa.sa_flags = 0;
-        sigemptyset(&sa.sa_mask);
-        sigaction(sig, &sa, NULL);
-}
-
-void sig_pause(void)
-{
-        sigset_t ss;
-        sigemptyset(&ss);
-        sigsuspend(&ss);
-}
-
-
 void xsetenv(const char *key, const char *value)
 {
         if (setenv(key, value, 1))
diff --git a/loginutils/passwd.c b/loginutils/passwd.c
index 0df084e5a..2f85e9f21 100644
--- a/loginutils/passwd.c
+++ b/loginutils/passwd.c
@@ -171,9 +171,11 @@ int passwd_main(int argc, char **argv)
 
         rlimit_fsize.rlim_cur = rlimit_fsize.rlim_max = 512L * 30000;
         setrlimit(RLIMIT_FSIZE, &rlimit_fsize);
-        signal(SIGHUP, SIG_IGN);
-        signal(SIGINT, SIG_IGN);
-        signal(SIGQUIT, SIG_IGN);
+        bb_signals(0
+                + (1 << SIGHUP)
+                + (1 << SIGINT)
+                + (1 << SIGQUIT)
+                , SIG_IGN);
         umask(077);
         xsetuid(0);
 
diff --git a/miscutils/less.c b/miscutils/less.c
index 5ffebcd6d..85c5ec536 100644
--- a/miscutils/less.c
+++ b/miscutils/less.c
@@ -1355,8 +1355,10 @@ int less_main(int argc, char **argv)
                 empty_line_marker = "";
 
         tcgetattr(kbd_fd, &term_orig);
-        signal(SIGTERM, sig_catcher);
-        signal(SIGINT, sig_catcher);
+        bb_signals(0
+                + (1 << SIGTERM)
+                + (1 << SIGINT)
+                , sig_catcher);
         term_less = term_orig;
         term_less.c_lflag &= ~(ICANON | ECHO);
         term_less.c_iflag &= ~(IXON | ICRNL);
diff --git a/miscutils/microcom.c b/miscutils/microcom.c
index 63b07fd69..b9ed9e401 100644
--- a/miscutils/microcom.c
+++ b/miscutils/microcom.c
@@ -99,10 +99,12 @@ int microcom_main(int argc, char **argv)
         }
 
         // setup signals
-        sig_catch(SIGHUP,  signal_handler);
-        sig_catch(SIGINT,  signal_handler);
-        sig_catch(SIGTERM, signal_handler);
-        sig_catch(SIGPIPE, signal_handler);
+        bb_signals_recursive(0
+                        + (1 << SIGHUP)
+                        + (1 << SIGINT)
+                        + (1 << SIGTERM)
+                        + (1 << SIGPIPE)
+                        , signal_handler);
 
         // error exit code if we fail to open the device
         signalled = 1;
diff --git a/miscutils/time.c b/miscutils/time.c
index d21944e01..677ca6d8b 100644
--- a/miscutils/time.c
+++ b/miscutils/time.c
@@ -61,7 +61,7 @@ static const char long_format[] ALIGN1 =
    Return 0 on error, 1 if ok.  */
 
 /* pid_t is short on BSDI, so don't try to promote it.  */
-static int resuse_end(pid_t pid, resource_t * resp)
+static int resuse_end(pid_t pid, resource_t *resp)
 {
         int status;
         pid_t caught;
@@ -69,7 +69,7 @@ static int resuse_end(pid_t pid, resource_t * resp)
         /* Ignore signals, but don't ignore the children.  When wait3
            returns the child process, set the time the command finished. */
         while ((caught = wait3(&status, 0, &resp->ru)) != pid) {
-                if (caught == -1)
+                if (caught == -1 && errno != EINTR)
                         return 0;
         }
         resp->elapsed_ms = (monotonic_us() / 1000) - resp->elapsed_ms;
@@ -373,24 +373,26 @@ static void summarize(const char *fmt, char **command, resource_t * resp)
 
 /* Run command CMD and return statistics on it.
    Put the statistics in *RESP.  */
-static void run_command(char *const *cmd, resource_t * resp)
+static void run_command(char *const *cmd, resource_t *resp)
 {
         pid_t pid;                      /* Pid of child.  */
-        __sighandler_t interrupt_signal, quit_signal;
+        void (*interrupt_signal)(int);
+        void (*quit_signal)(int);
 
         resp->elapsed_ms = monotonic_us() / 1000;
         pid = vfork();          /* Run CMD as child process.  */
         if (pid < 0)
                 bb_error_msg_and_die("cannot fork");
-        else if (pid == 0) {    /* If child.  */
+        if (pid == 0) { /* If child.  */
                 /* Don't cast execvp arguments; that causes errors on some systems,
                    versus merely warnings if the cast is left off.  */
                 BB_EXECVP(cmd[0], cmd);
-                bb_error_msg("cannot run %s", cmd[0]);
-                _exit(errno == ENOENT ? 127 : 126);
+                xfunc_error_retval = (errno == ENOENT ? 127 : 126);
+                bb_error_msg_and_die("cannot run %s", cmd[0]);
         }
 
         /* Have signals kill the child but not self (if possible).  */
+//TODO: just block all sigs? and reenable them in the very end in main?
         interrupt_signal = signal(SIGINT, SIG_IGN);
         quit_signal = signal(SIGQUIT, SIG_IGN);
 
diff --git a/miscutils/watchdog.c b/miscutils/watchdog.c
index e040c64fd..28bd35813 100644
--- a/miscutils/watchdog.c
+++ b/miscutils/watchdog.c
@@ -47,8 +47,10 @@ int watchdog_main(int argc, char **argv)
                 bb_daemonize_or_rexec(DAEMON_CHDIR_ROOT, argv);
         }
 
-        signal(SIGHUP, watchdog_shutdown);
-        signal(SIGINT, watchdog_shutdown);
+        bb_signals(0
+                + (1 << SIGHUP)
+                + (1 << SIGINT)
+                , watchdog_shutdown);
 
         /* Use known fd # - avoid needing global 'int fd' */
         xmove_fd(xopen(argv[argc - 1], O_WRONLY), 3);
diff --git a/networking/dnsd.c b/networking/dnsd.c
index 5e7886167..0a5278377 100644
--- a/networking/dnsd.c
+++ b/networking/dnsd.c
@@ -361,14 +361,16 @@ int dnsd_main(int argc, char **argv)
         dnsentryinit();
 
         signal(SIGINT, interrupt);
-        /* why? signal(SIGPIPE, SIG_IGN); */
-        signal(SIGHUP, SIG_IGN);
+        bb_signals(0
+                /* why? + (1 << SIGPIPE) */
+                + (1 << SIGHUP)
 #ifdef SIGTSTP
-        signal(SIGTSTP, SIG_IGN);
+                + (1 << SIGTSTP)
 #endif
 #ifdef SIGURG
-        signal(SIGURG, SIG_IGN);
+                + (1 << SIGURG)
 #endif
+                , SIG_IGN);
 
         lsa = xdotted2sockaddr(listen_interface, port);
         udps = xsocket(lsa->u.sa.sa_family, SOCK_DGRAM, 0);
diff --git a/networking/nc_bloaty.c b/networking/nc_bloaty.c
index 206c5e5d9..853577aef 100644
--- a/networking/nc_bloaty.c
+++ b/networking/nc_bloaty.c
@@ -683,14 +683,18 @@ int nc_main(int argc, char **argv)
         PTR_TO_GLOBALS = xzalloc(sizeof(G));
 
         /* catch a signal or two for cleanup */
-        signal(SIGINT, catch);
-        signal(SIGQUIT, catch);
-        signal(SIGTERM, catch);
+        bb_signals(0
+                + (1 << SIGINT)
+                + (1 << SIGQUIT)
+                + (1 << SIGTERM)
+                , catch);
         /* and suppress others... */
+        bb_signals(0
 #ifdef SIGURG
-        signal(SIGURG, SIG_IGN);
+                + (1 << SIGURG)
 #endif
-        signal(SIGPIPE, SIG_IGN); /* important! */
+                + (1 << SIGPIPE) /* important! */
+                , SIG_IGN);
 
         proggie = argv;
         while (*++proggie) {
diff --git a/networking/sendmail.c b/networking/sendmail.c
index 63305d149..fa995abf4 100644
--- a/networking/sendmail.c
+++ b/networking/sendmail.c
@@ -111,8 +111,10 @@ static void launch_helper(const char **argv)
                 _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
 }
diff --git a/networking/slattach.c b/networking/slattach.c
index 17df4fa9e..e501d82e1 100644
--- a/networking/slattach.c
+++ b/networking/slattach.c
@@ -175,10 +175,12 @@ int slattach_main(int argc, char **argv)
 
         /* 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 */
diff --git a/networking/telnetd.c b/networking/telnetd.c
index 962e5cc7b..0bffa9700 100644
--- a/networking/telnetd.c
+++ b/networking/telnetd.c
@@ -279,8 +279,7 @@ make_new_session(
         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
diff --git a/networking/udhcp/signalpipe.c b/networking/udhcp/signalpipe.c
index 918abd02d..1486b3b2d 100644
--- a/networking/udhcp/signalpipe.c
+++ b/networking/udhcp/signalpipe.c
@@ -42,9 +42,11 @@ void udhcp_sp_setup(void)
         close_on_exec_on(signal_pipe.rd);
         close_on_exec_on(signal_pipe.wr);
         ndelay_on(signal_pipe.wr);
-        signal(SIGUSR1, signal_handler);
-        signal(SIGUSR2, signal_handler);
-        signal(SIGTERM, signal_handler);
+        bb_signals(0
+                + (1 << SIGUSR1)
+                + (1 << SIGUSR2)
+                + (1 << SIGTERM)
+                , signal_handler);
 }
 
 
diff --git a/procps/top.c b/procps/top.c
index a47150ea7..f4bb5094a 100644
--- a/procps/top.c
+++ b/procps/top.c
@@ -772,8 +772,10 @@ int top_main(int argc, char **argv)
         /* unbuffered input, turn off echo */
         new_settings.c_lflag &= ~(ISIG | ICANON | ECHO | ECHONL);
 
-        signal(SIGTERM, sig_catcher);
-        signal(SIGINT, sig_catcher);
+        bb_signals(0
+                + (1 << SIGTERM)
+                + (1 << SIGINT)
+                , sig_catcher);
         tcsetattr(0, TCSANOW, (void *) &new_settings);
         atexit(reset_term);
 #endif /* FEATURE_USE_TERMIOS */
diff --git a/runit/runsv.c b/runit/runsv.c
index e1d99e2df..02271d68b 100644
--- a/runit/runsv.c
+++ b/runit/runsv.c
@@ -345,8 +345,10 @@ static void startservice(struct svdir *s)
                                 xdup2(logpipe.wr, 1);
                         }
                 }
-                signal(SIGCHLD, SIG_DFL);
-                signal(SIGTERM, SIG_DFL);
+                bb_signals(0
+                        + (1 << SIGCHLD)
+                        + (1 << SIGTERM)
+                        , SIG_DFL);
                 sig_unblock(SIGCHLD);
                 sig_unblock(SIGTERM);
                 execvp(*run, run);
@@ -460,9 +462,9 @@ int runsv_main(int argc, char **argv)
         ndelay_on(selfpipe.wr);
 
         sig_block(SIGCHLD);
-        sig_catch(SIGCHLD, s_child);
+        bb_signals_recursive(1 << SIGCHLD, s_child);
         sig_block(SIGTERM);
-        sig_catch(SIGTERM, s_term);
+        bb_signals_recursive(1 << SIGTERM, s_term);
 
         xchdir(dir);
         /* bss: svd[0].pid = 0; */
diff --git a/runit/runsvdir.c b/runit/runsvdir.c
index 4225ac101..3ff1d4c23 100644
--- a/runit/runsvdir.c
+++ b/runit/runsvdir.c
@@ -100,8 +100,10 @@ static void runsv(int no, const char *name)
                 /* child */
                 if (set_pgrp)
                         setsid();
-                signal(SIGHUP, SIG_DFL);
-                signal(SIGTERM, SIG_DFL);
+                bb_signals(0
+                        + (1 << SIGHUP)
+                        + (1 << SIGTERM)
+                        , SIG_DFL);
                 execvp(prog[0], prog);
                 fatal2_cannot("start runsv ", name);
         }
@@ -232,8 +234,8 @@ int runsvdir_main(int argc, char **argv)
                         bb_show_usage();
         }
 
-        sig_catch(SIGTERM, s_term);
-        sig_catch(SIGHUP, s_hangup);
+        bb_signals_recursive(1 << SIGTERM, s_term);
+        bb_signals_recursive(1 << SIGHUP, s_hangup);
         svdir = *argv++;
         if (argv && *argv) {
                 rplog = *argv;
diff --git a/runit/svlogd.c b/runit/svlogd.c
index 9c169da1f..73570dad0 100644
--- a/runit/svlogd.c
+++ b/runit/svlogd.c
@@ -222,9 +222,11 @@ static unsigned processorstart(struct logdir *ld)
                 int fd;
 
                 /* child */
-                signal(SIGTERM, SIG_DFL);
-                signal(SIGALRM, SIG_DFL);
-                signal(SIGHUP, SIG_DFL);
+                bb_signals(0
+                        + (1 << SIGTERM)
+                        + (1 << SIGALRM)
+                        + (1 << SIGHUP)
+                        , SIG_DFL);
                 sig_unblock(SIGTERM);
                 sig_unblock(SIGALRM);
                 sig_unblock(SIGHUP);
@@ -903,10 +905,10 @@ int svlogd_main(int argc, char **argv)
         sigaddset(&blocked_sigset, SIGALRM);
         sigaddset(&blocked_sigset, SIGHUP);
         sigprocmask(SIG_BLOCK, &blocked_sigset, NULL);
-        sig_catch(SIGTERM, sig_term_handler);
-        sig_catch(SIGCHLD, sig_child_handler);
-        sig_catch(SIGALRM, sig_alarm_handler);
-        sig_catch(SIGHUP, sig_hangup_handler);
+        bb_signals_recursive(1 << SIGTERM, sig_term_handler);
+        bb_signals_recursive(1 << SIGCHLD, sig_child_handler);
+        bb_signals_recursive(1 << SIGALRM, sig_alarm_handler);
+        bb_signals_recursive(1 << SIGHUP, sig_hangup_handler);
 
         logdirs_reopen();
 
diff --git a/shell/hush.c b/shell/hush.c
index 8afa15e89..4d4843173 100644
--- a/shell/hush.c
+++ b/shell/hush.c
@@ -709,28 +709,34 @@ static void signal_SA_RESTART(int sig, void (*handler)(int))
 /* Signals are grouped, we handle them in batches */
 static void set_fatal_sighandler(void (*handler)(int))
 {
-        signal(SIGILL , handler);
-        signal(SIGTRAP, handler);
-        signal(SIGABRT, handler);
-        signal(SIGFPE , handler);
-        signal(SIGBUS , handler);
-        signal(SIGSEGV, handler);
+        bb_signals(0
+                + (1 << SIGILL)
+                + (1 << SIGTRAP)
+                + (1 << SIGABRT)
+                + (1 << SIGFPE)
+                + (1 << SIGBUS)
+                + (1 << SIGSEGV)
         /* bash 3.2 seems to handle these just like 'fatal' ones */
-        signal(SIGHUP , handler);
-        signal(SIGPIPE, handler);
-        signal(SIGALRM, handler);
+                + (1 << SIGHUP)
+                + (1 << SIGPIPE)
+                + (1 << SIGALRM)
+                , handler);
 }
 static void set_jobctrl_sighandler(void (*handler)(int))
 {
-        signal(SIGTSTP, handler);
-        signal(SIGTTIN, handler);
-        signal(SIGTTOU, handler);
+        bb_signals(0
+                + (1 << SIGTSTP)
+                + (1 << SIGTTIN)
+                + (1 << SIGTTOU)
+                , handler);
 }
 static void set_misc_sighandler(void (*handler)(int))
 {
-        signal(SIGINT , handler);
-        signal(SIGQUIT, handler);
-        signal(SIGTERM, handler);
+        bb_signals(0
+                + (1 << SIGINT)
+                + (1 << SIGQUIT)
+                + (1 << SIGTERM)
+                , handler);
 }
 /* SIGCHLD is special and handled separately */
 
diff --git a/sysklogd/klogd.c b/sysklogd/klogd.c
index d65b6f9a0..6a675b8b3 100644
--- a/sysklogd/klogd.c
+++ b/sysklogd/klogd.c
@@ -57,9 +57,10 @@ int klogd_main(int argc, char **argv)
         openlog("kernel", 0, LOG_KERN);
 
         /* Set up sig handlers */
-        signal(SIGINT, klogd_signal);
-        signal(SIGKILL, klogd_signal);
-        signal(SIGTERM, klogd_signal);
+        bb_signals(0
+                + (1 << SIGINT)
+                + (1 << SIGTERM)
+                , klogd_signal);
         signal(SIGHUP, SIG_IGN);
 
         /* "Open the log. Currently a NOP." */
diff --git a/sysklogd/syslogd.c b/sysklogd/syslogd.c
index 457f38103..c6e057138 100644
--- a/sysklogd/syslogd.c
+++ b/sysklogd/syslogd.c
@@ -540,9 +540,11 @@ static void do_syslogd(void)
         int sock_fd;
 
         /* Set up signal handlers */
-        signal(SIGINT, quit_signal);
-        signal(SIGTERM, quit_signal);
-        signal(SIGQUIT, quit_signal);
+        bb_signals(0
+                + (1 << SIGINT)
+                + (1 << SIGTERM)
+                + (1 << SIGQUIT)
+                , quit_signal);
         signal(SIGHUP, SIG_IGN);
         /* signal(SIGCHLD, SIG_IGN); - why? */
 #ifdef SYSLOGD_MARK
diff --git a/util-linux/more.c b/util-linux/more.c
index 2d7f3a9e4..eeeea509e 100644
--- a/util-linux/more.c
+++ b/util-linux/more.c
@@ -87,9 +87,11 @@ int more_main(int argc, char **argv)
         new_settings.c_cc[VMIN] = 1;
         new_settings.c_cc[VTIME] = 0;
         setTermSettings(cin_fileno, &new_settings);
-        signal(SIGINT, gotsig);
-        signal(SIGQUIT, gotsig);
-        signal(SIGTERM, gotsig);
+        bb_signals(0
+                + (1 << SIGINT)
+                + (1 << SIGQUIT)
+                + (1 << SIGTERM)
+                , gotsig);
 #endif
 
         do {