reboot: signal init, add -f option to call reboot();

init: use SIGINT, use xsignal()

Now that oneit supports the same signals as our "sysv"-init for shutdown,
make reboot et al. signal pid 1 with the appropriate signal.
Of these signals, only SIGINT works with sysvinit 2.88, causing a reboot.
The others are only supported in Busybox init.

Also, make init accept SIGINT and use xsignal().

1 files changed, 7 insertions, 5 deletions

diff --git a/toys/pending/init.c b/toys/pending/init.c
index 529c1b9e..8d0d3f02 100644
--- a/toys/pending/init.c
+++ b/toys/pending/init.c
@@ -348,6 +348,7 @@ static void halt_poweroff_reboot_handler(int sig_no)
       reboot_magic_no=RB_POWER_OFF;
       break;
     case SIGTERM:  
+    case SIGINT:
       error_msg("Requesting system reboot");
       reboot_magic_no=RB_AUTOBOOT;
       break;
@@ -415,7 +416,7 @@ static void pause_handler(int sig_no)
 
   errno_backup = errno;
   signal_backup = caught_signal;
-  signal(SIGCONT, catch_signal);
+  xsignal(SIGCONT, catch_signal);
 
   while(1) {
     if (caught_signal == SIGCONT) break;
@@ -460,10 +461,11 @@ void init_main(void)
   putenv("USER=root");
 
   inittab_parsing();  
-  signal(SIGUSR1, halt_poweroff_reboot_handler);//halt
-  signal(SIGUSR2, halt_poweroff_reboot_handler);//poweroff
-  signal(SIGTERM, halt_poweroff_reboot_handler);//reboot
-  signal(SIGQUIT, restart_init_handler);//restart init
+  xsignal(SIGUSR1, halt_poweroff_reboot_handler);//halt
+  xsignal(SIGUSR2, halt_poweroff_reboot_handler);//poweroff
+  xsignal(SIGTERM, halt_poweroff_reboot_handler);//reboot
+  xsignal(SIGINT, halt_poweroff_reboot_handler);//reboot
+  xsignal(SIGQUIT, restart_init_handler);//restart init
   memset(&sig_act, 0, sizeof(sig_act));
   sigfillset(&sig_act.sa_mask);
   sigdelset(&sig_act.sa_mask, SIGCONT);