runit

commit dd0a306a38af8fd04c76b5e08683e80a385f2f82
parent 0e79d2a6554d1881f5f74576923ce12cfa54ed00
Author: Gerrit Pape <pape@smarden.org>
Date:   Sun, 23 Dec 2001 02:23:20 +0000

init.c moved to runit-init.c

Diffstat:
A
src/runit-init.c
 | 
82
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

1 file changed, 82 insertions(+), 0 deletions(-)
diff --git a/src/runit-init.c b/src/runit-init.c
@@ -0,0 +1,82 @@
+#include <sys/types.h>
+#include <signal.h>
+#include <unistd.h>
+#include "strerr.h"
+#include "pathexec.h"
+#include "sig.h"
+#include "open.h"
+#include "error.h"
+
+#define USAGE " 0|6"
+#define WARNING "init: warning: "
+#define FATAL "init: fatal: "
+
+#define RUNIT "/sbin/runit"
+#define STOPIT "/etc/runit/stopit"
+#define REBOOT "/etc/runit/reboot"
+
+const char *progname;
+
+void usage(void) {
+  strerr_die4x(1, "usage: ", progname, USAGE, "\n");
+}
+
+void runit_halt () {
+  if (open_trunc(STOPIT) == -1) {
+    strerr_die4sys(111, FATAL, "unable to create ", STOPIT, ": ");
+  }
+  if (unlink(REBOOT) == -1) {
+    if (errno != error_noent) {
+      strerr_die4sys(111, FATAL, "unable to remove ", REBOOT, ": ");
+    }
+  }
+  kill(1, sig_cont);
+  exit(0);
+}
+void runit_reboot () {
+  if (open_trunc(STOPIT) == -1) {
+    strerr_die4sys(111, FATAL, "unable to create ", STOPIT, ": ");
+  }
+  if (open_trunc(REBOOT) == -1) {
+    strerr_die4sys(111, FATAL, "unable to create ", REBOOT, ": ");
+  }
+  kill(1, sig_cont);
+  exit(0);
+}
+
+int main (int argc, const char * const *argv, const char * const *envp) {
+  const char *prog[2];
+
+  progname =*argv++;
+
+  if (getpid() == 1) {
+    prog[1] =0;
+    prog[0] ="runit";
+
+    /* kernel is starting init, runit does the job. */
+    pathexec_run(RUNIT, (const char * const *) prog, envp);
+
+    /* serious error */
+    strerr_die4sys(111, FATAL, "unable to start ", prog[0], ": ");
+  }
+
+  if (! *argv || ! **argv) usage();
+
+  switch (**argv) {
+  case '0':
+    runit_halt();
+    break;
+  case '6':
+    runit_reboot();
+    break;
+  case '-':
+    if ((*argv)[1] == 'V') {
+      strerr_warn1("$Id$\n", 0);
+    }
+  default:
+    usage();
+  }
+  
+  /* not reached */
+  exit(0);
+}