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qga: Fix shutdown command of guest agent to work with SysV

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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

With upstart/systemd qga use one of thee commands, depending on 'mode' parameter:
  shutdown -P +0 "..."
  shutdown -H +0 "..."
  shutdown -r +0 "..."
SysV equivalents for these are:
  shutdown -h -P +0 "..."
  shutdown -h -H +0 "..."
  shutdown -h -r +0 "..."
and these retain their meaning with upstart/systemd.

According to FreeBSD manpages, shutdown does not accept -P and -H options. Commands should be:
  shutdown -p +0 "..."
  shutdown -h +0 "..."
  shutdown -r +0 "..."

shutdown in Solaris does not accept any of -hHpPr and does not accept time in "+0" format

Signed-off-by: Michael Avdienko <whitearchey@gmail.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
This commit is contained in:
whitearchey 2013-11-06 10:54:04 +09:00 committed by Michael Tokarev
parent 3325a83627
commit 485e741cd1
1 changed files with 1 additions and 1 deletions
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2
qga/commands-posix.c
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@ -99,7 +99,7 @@ void qmp_guest_shutdown(bool has_mode, const char *mode, Error **err)
reopen_fd_to_null(1); reopen_fd_to_null(1);
reopen_fd_to_null(2); reopen_fd_to_null(2);
execle("/sbin/shutdown", "shutdown", shutdown_flag, "+0", execle("/sbin/shutdown", "shutdown", "-h", shutdown_flag, "+0",
"hypervisor initiated shutdown", (char*)NULL, environ); "hypervisor initiated shutdown", (char*)NULL, environ);
_exit(EXIT_FAILURE); _exit(EXIT_FAILURE);
} else if (pid < 0) { } else if (pid < 0) {