commit 846d6fab1b58572eb32f6f944c55c312704b2ab0
parent 87a5da152561c040bbfe5fe9e71c0ab5865fcab2
Author: leitner <leitner>
Date: Mon, 28 Apr 2003 11:19:44 +0000
add contributed killall5 and ctrlaltdel-run script
Diffstat:
4 files changed, 108 insertions(+), 2 deletions(-)
diff --git a/CHANGES b/CHANGES
@@ -1,3 +1,8 @@
+0.10:
+ add sample script for /etc/minit/ctrlaltdel/run as
+ control/ctrlaltdel-run (Florian Westphal)
+ add killall5, needs /proc on Linux though (Florian Westphal)
+
0.9.1:
fix embarassing typo in msvc (Gelu G. Lupas)
diff --git a/Makefile b/Makefile
@@ -1,4 +1,4 @@
-all: minit msvc pidfilehack hard-reboot write_proc
+all: minit msvc pidfilehack hard-reboot write_proc killall5
#CFLAGS=-pipe -march=i386 -fomit-frame-pointer -Os -I../dietlibc/include
DIET=diet
@@ -21,7 +21,7 @@ str_start.o
$(DIET) $(CROSS)$(CC) $(CFLAGS) -c $^
clean:
- rm -f *.o minit msvc pidfilehack hard-reboot write_proc
+ rm -f *.o minit msvc pidfilehack hard-reboot write_proc killall5
test: test.c
gcc -nostdlib -o $@ $^ -I../dietlibc/include ../dietlibc/start.o ../dietlibc/dietlibc.a
@@ -35,6 +35,9 @@ hard-reboot: hard-reboot.c
write_proc: write_proc.c
$(DIET) $(CROSS)$(CC) $(CFLAGS) -o $@ $^
+killall5: killall5.c
+ $(DIET) $(CROSS)$(CC) $(CFLAGS) -o $@ $^
+
install-files:
install minit pidfilehack $(DESTDIR)/sbin
install write_proc hard-reboot $(DESTDIR)/sbin
diff --git a/contrib/ctrlaltdel-run b/contrib/ctrlaltdel-run
@@ -0,0 +1,30 @@
+#!/bin/sh
+
+# if umount -a fails give services additional time to shut down
+fail(){
+echo umount failed, try again.
+sleep 1
+sync
+umount -a || sleep 3
+}
+
+# Shut down "respawn" services - except getty/1.
+for i in `find /etc/minit -type f -name respawn | sed 's@/respawn$@@' | grep -v ^/etc/minit/getty/1$`;do
+ msvc -d "$i"
+done
+
+#send sigterm to all processes.
+/sbin/killall5 -15
+
+#send sighup to all processes.
+/sbin/killall5 -1
+
+sync
+# umount everything, mount "/" readonly
+/bin/umount -a || fail
+/sbin/swapoff -a
+
+# power down.
+# params should contain one of "RESTART", "HALT" or "POWER_OFF"
+exec /sbin/hard-reboot $1
+
diff --git a/killall5.c b/killall5.c
@@ -0,0 +1,68 @@
+/*
+
+killall5 -- send a signal to all processes.
+
+killall5 is the SystemV killall command. It sends a signal
+to all processes except init(PID 1) and the processes in its
+own session, so it won't kill the shell that is running the
+script it was called from. Its primary (only) use is in the rc
+scripts found in the /etc/init.d directory.
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version
+2 of the License, or (at your option) any later version.
+
+*/
+
+#include <dirent.h>
+#include <signal.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/types.h>
+
+#define USAGE "Usage: killall5 SIGNAL\n"
+#define NOPROC "No processes found - /proc not mounted?\n"
+
+int main(int argc, char **argv)
+{
+ struct dirent *dir;
+ DIR *dirstream;
+ register pid_t pid, sid, mypid, mysid;
+ int signal=-1;
+ unsigned int sig_sent=0;
+
+ if (argc == 2) {
+ if (argv[1][0] == '-') argv[1]++;
+ signal=atoi(argv[1]);
+ }
+
+ if ( (signal < 1) || ( signal > 31) ) { write(2,USAGE,sizeof USAGE - 1); return 1; }
+
+
+ kill(-1,SIGSTOP);
+
+ if ( (dirstream=opendir("/proc"))) {
+
+ mypid=getpid();
+ mysid=getsid(0);
+
+ while ( (dir=readdir(dirstream))){
+ pid=atoi(dir->d_name);
+
+ if (pid > 1 ){
+ sig_sent=1;
+ sid=getsid(pid);
+ if ( (pid != mypid) &&
+ ( sid !=mysid)) kill(pid,signal);
+ }
+ }
+ }
+
+ kill(-1,SIGCONT);
+ if (!sig_sent) { write(2,NOPROC, sizeof NOPROC -1); return 1; }
+
+return 0;
+}
+
