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Re: [Xen-devel] execve() in reboot.c ?
| To: | Mark Williamson <mark.williamson@xxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] execve() in reboot.c ? |
| From: | aq <aquynh@xxxxxxxxx> |
| Date: | Tue, 26 Jul 2005 03:26:34 +0900 |
| Cc: | Jeremy Katz <katzj@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx, Ian Pratt <m+Ian.Pratt@xxxxxxxxxxxx> |
| Delivery-date: | Mon, 25 Jul 2005 18:25:08 +0000 |
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| Reply-to: | aq <aquynh@xxxxxxxxx> |
| Sender: | xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
On 7/26/05, Mark Williamson <mark.williamson@xxxxxxxxxxxx> wrote: > > > Can't we just fire off a kernel thread to call sys_reboot and friends > > > directly? It seems unfortunate to have to rely on userspace > > > applications, having gone to the trouble of handling the cmsg in the > > > kernel. > > > > That doesn't do a graceful shutdown of running processes, does it? > > Hmmmm, I suppose not. Ah well, I think I'll withdraw my previous statement as > I can't think of another way to do this right now :-) > actually what you suggested is in use now ;-). firstly, the code use daemonize() to become kernel thread, then execute userspace code (shutdown/poweroff/halt...). if that failed (for example in case there is no such userspace binary), sys_reboot is called. i dont see why we try to call userspace comand first, then fail thru to sys_reboot(). why just call sys_reboot()? regards, aq _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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