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Re: [Qemu-devel] [PATCH] qga: Fix shutdown command of guest agent to wor
From: |
Michael Tokarev |
Subject: |
Re: [Qemu-devel] [PATCH] qga: Fix shutdown command of guest agent to work with SysV |
Date: |
Wed, 06 Nov 2013 13:20:36 +0400 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130922 Icedove/17.0.9 |
06.11.2013 05:54, whitearchey wrote:
For now guest agent uses following command to shutdown system:
shutdown -P +0 "blabla"
but this syntax works only with shutdown command from systemd or upstart,
because SysV shutdown requires -h switch.
Following patch changes the command so it works with systemd, upstart and SysV
While the patch is one-liner indeed, it is a bit more than trivial.
Because it changes things in a non-obvious way, especially when
multiple systems are concerned. Cc'ing qemu-devel@ due to this.
--- a/qga/commands-posix.c
+++ b/qga/commands-posix.c
- execle("/sbin/shutdown", "shutdown", shutdown_flag, "+0",
+ execle("/sbin/shutdown", "shutdown", "-h", shutdown_flag, "+0",
Note that shutdown command is not in POSIX, despite the fact
that this is put into commands-posix.c
Note also that even shutdown from sysvinit on linux has another
option, -P, which mean poweroff, while -h means "halt OR poweroff"
(the latter is a bit unclear).
Does the same work on other *nixes? *BSD? Solaris?
Thanks,
/mjt
- Re: [Qemu-devel] [PATCH] qga: Fix shutdown command of guest agent to work with SysV,
Michael Tokarev <=