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over the years. Well I finally took the time to track this down. It turns out that inside linux/kernel/sys.c the kernel will call machine_halt(); do_exit(0); when halting, or will call machine_power_off(); do_exit(0); during a reboot. Unlike sysv init, we call reboot from within the init process, so if the call to machine_halt() or machine_power_off() returns, the call to do_exit(0) will cause the kernel to panic. Which is a very bad thing to happen. So I just added this little patch to fork and call the reboot syscall from within the forked child process, thereby neatly avoiding the problem. But IMHO, both calls to do_exit(0) within linux/kernel/sys.c are bugs and should be fixed. -Erik |
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.. | ||
Config.in | ||
halt.c | ||
init.c | ||
Makefile | ||
Makefile.in | ||
mesg.c | ||
poweroff.c | ||
reboot.c | ||
start_stop_daemon.c |