43 lines
1,021 B
C
43 lines
1,021 B
C
/* tinyhalt 1.0 - small forerunner Author: Kees J. Bot
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*
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* Disk space on the root file system is a scarce resource. This little
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* program sits in /sbin. It normally calls the real halt/reboot, but if
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* that isn't available then it simply calls reboot(). Can't do any logging
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* of the event anyhow.
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*/
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#define nil 0
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#include <sys/types.h>
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#include <stdlib.h>
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#include <string.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <signal.h>
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int main(int argc, char **argv)
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{
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char *prog;
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char *reboot_code = "delay; boot";
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/* Try to run the real McCoy. */
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#if __minix_vmd
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execv("/usr/sbin/halt", argv);
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#else
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execv("/usr/bin/halt", argv);
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#endif
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if ((prog = strrchr(*argv,'/')) == nil) prog= argv[0]; else prog++;
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sleep(1); /* Not too fast. */
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signal(SIGHUP, SIG_IGN);
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signal(SIGTERM, SIG_IGN);
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kill(1, SIGTERM);
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kill(-1, SIGTERM);
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sleep(1);
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reboot(strcmp(prog, "reboot") == 0 ? RBT_MONITOR : RBT_HALT,
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reboot_code, strlen(reboot_code));
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write(2, "reboot call failed\n", 19);
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return 1;
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}
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