Thread: How to shutdown or restart a PC from a pthread-process

The Windows API to do stuff like this is ExitWidnowsEx.

It is not, normally considered polite to restart/shut down the machine programmatically tho'.

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Mats

Be sure to have the user's permission first. I would be quite annoyed if a program rebooted my machine without my permission.

Originally Posted by matsp

The Windows API to do stuff like this is ExitWidnowsEx.

It is not, normally considered polite to restart/shut down the machine programmatically tho'.

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Mats

thanks but I forgot to specify I need it for Linux!! I need a "clean" shutdown of course!!
I am talkinng of an industrial PC in an industrial application, not for the use of several users so SW shutdown and restart are needed!
The main process (multipthread) is written by me and a colleague and only a few other server daemons will be running (like ssh, ftp etc.)

system("init 1") will reboot the system. See http://unixhelp.ed.ac.uk/CGI/man-cgi?init+8

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Mats

Another (fast+forced+manual) way is (kernel must be compiled with magic sysrq keys):

Code:

FILE *f=fopen("/proc/sysrq-trigger", "w");
if (f)
{
    // s = sync
    // u = remount all read-only
    // b = reboot
    // o = halt
    fprintf(f, "s\n");

    ...
    // sleep between steps
    ...

    fclose(f);  // reached ???
}

So, basicly, you write 's' (sync), wait some time, write 'u' (remount ro), wait some time, and then write 'b' or 'o'. ('o' didn't test, but docs says it's for shutdown).

EDIT: assuming, of course, you have all the system under control, and can afford this approach...