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111 lines
2.5 KiB
C
111 lines
2.5 KiB
C
/*
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* lxc: linux Container library
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*
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* (C) Copyright IBM Corp. 2007, 2008
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*
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* Authors:
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* Daniel Lezcano <dlezcano at fr.ibm.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <unistd.h>
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#include <sys/param.h>
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#include <sys/signal.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/socket.h>
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#include <fcntl.h>
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#include <lxc/log.h>
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#include <lxc/start.h>
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#include "lxc.h"
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#include "commands.h"
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lxc_log_define(lxc_stop, lxc);
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int lxc_stop(const char *name)
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{
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struct lxc_command command = {
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.request = { .type = LXC_COMMAND_STOP },
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};
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int ret, stopped = 0;
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ret = lxc_command(name, &command,&stopped);
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if (ret < 0 && stopped) {
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INFO("'%s' is already stopped", name);
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return 0;
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}
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if (ret < 0) {
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ERROR("failed to send command");
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return -1;
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}
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/* we do not expect any answer, because we wait for the connection to be
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* closed
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*/
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if (ret > 0) {
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ERROR("failed to stop '%s': %s",
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name, strerror(-command.answer.ret));
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return -1;
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}
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INFO("'%s' has stopped", name);
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return 0;
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}
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/*----------------------------------------------------------------------------
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* functions used by lxc-start mainloop
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* to handle above command request.
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*--------------------------------------------------------------------------*/
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extern int lxc_stop_callback(int fd, struct lxc_request *request,
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struct lxc_handler *handler)
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{
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struct lxc_answer answer;
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int ret;
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answer.ret = kill(handler->pid, SIGKILL);
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if (!answer.ret) {
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ret = lxc_unfreeze(handler->name);
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if (!ret)
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return 0;
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ERROR("failed to unfreeze container");
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answer.ret = ret;
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}
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ret = send(fd, &answer, sizeof(answer), 0);
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if (ret < 0) {
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WARN("failed to send answer to the peer");
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goto out;
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}
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if (ret != sizeof(answer)) {
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ERROR("partial answer sent");
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goto out;
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}
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out:
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return -1;
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}
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