/*****************************************************************************\
 *  cancel.c - cancel a slurm job or job step
 *****************************************************************************
 *  Copyright (C) 2002 The Regents of the University of California.
 *  Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
 *  Written by Morris Jette <jette1@llnl.gov>.
 *  CODE-OCEC-09-009. All rights reserved.
 *
 *  This file is part of SLURM, a resource management program.
 *  For details, see <http://www.schedmd.com/slurmdocs/>.
 *  Please also read the included file: DISCLAIMER.
 *
 *  SLURM is free software; you can redistribute it and/or modify it under
 *  the terms of the GNU General Public License as published by the Free
 *  Software Foundation; either version 2 of the License, or (at your option)
 *  any later version.
 *
 *  In addition, as a special exception, the copyright holders give permission
 *  to link the code of portions of this program with the OpenSSL library under
 *  certain conditions as described in each individual source file, and
 *  distribute linked combinations including the two. You must obey the GNU
 *  General Public License in all respects for all of the code used other than
 *  OpenSSL. If you modify file(s) with this exception, you may extend this
 *  exception to your version of the file(s), but you are not obligated to do
 *  so. If you do not wish to do so, delete this exception statement from your
 *  version.  If you delete this exception statement from all source files in
 *  the program, then also delete it here.
 *
 *  SLURM is distributed in the hope that it will be useful, but WITHOUT ANY
 *  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 *  FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
 *  details.
 *
 *  You should have received a copy of the GNU General Public License along
 *  with SLURM; if not, write to the Free Software Foundation, Inc.,
 *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA.
\*****************************************************************************/

#ifdef HAVE_CONFIG_H
#  include "config.h"
#endif

#include <errno.h>
#include <stdio.h>
#include <stdlib.h>

#include "slurm/slurm.h"

#include "src/common/macros.h"
#include "src/common/slurm_protocol_api.h"

/*
 * slurm_kill_job - send the specified signal to all steps of an existing job
 * IN job_id     - the job's id
 * IN signal     - signal number
 * IN flags      - see KILL_JOB_* flags above
 * RET 0 on success, otherwise return -1 and set errno to indicate the error
 */
extern int
slurm_kill_job (uint32_t job_id, uint16_t signal, uint16_t flags)
{
	int rc;
	slurm_msg_t msg;
	job_step_kill_msg_t req;

	slurm_msg_t_init(&msg);
	/*
	 * Request message:
	 */
	req.job_id      = job_id;
	req.job_step_id = NO_VAL;
	req.signal      = signal;
	req.flags       = flags;
	msg.msg_type    = REQUEST_CANCEL_JOB_STEP;
	msg.data        = &req;

	if (slurm_send_recv_controller_rc_msg(&msg, &rc) < 0)
		return SLURM_FAILURE;

	if (rc)
		slurm_seterrno_ret(rc);

	return SLURM_SUCCESS;
}

/*
 * Kill a job step with job id "job_id" and step id "step_id", optionally
 *	sending the processes in the job step a signal "signal"
 * IN job_id     - the job's id
 * IN step_id    - the job step's id
 * IN signal     - signal number
 * RET 0 on success, otherwise return -1 and set errno to indicate the error
 */
extern int
slurm_kill_job_step (uint32_t job_id, uint32_t step_id, uint16_t signal)
{
	int rc;
	slurm_msg_t msg;
	job_step_kill_msg_t req;

	slurm_msg_t_init(&msg);
	/*
	 * Request message:
	 */
	req.job_id      = job_id;
	req.job_step_id = step_id;
	req.signal      = signal;
	req.flags	= 0;
	msg.msg_type    = REQUEST_CANCEL_JOB_STEP;
        msg.data        = &req;

	if (slurm_send_recv_controller_rc_msg(&msg, &rc) < 0)
		return SLURM_FAILURE;

	if (rc)
		slurm_seterrno_ret(rc);

	return SLURM_SUCCESS;
}
