/*****************************************************************************\
 *  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 <https://slurm.schedmd.com/>.
 *  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.
\*****************************************************************************/

#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"
#include "src/common/xmalloc.h"
#include "src/common/xstring.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 in slurm.h
 * RET SLURM_SUCCESS on success, otherwise return SLURM_ERROR with errno set
 */
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:
	 */
	memset(&req, 0, sizeof(job_step_kill_msg_t));
	req.step_id.job_id = job_id;
	req.sjob_id     = NULL;
	req.step_id.step_id = NO_VAL;
	req.step_id.step_het_comp = 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, working_cluster_rec)<0)
		return SLURM_ERROR;

	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 SLURM_SUCCESS on success, otherwise return SLURM_ERROR with errno set
 */
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:
	 */
	memset(&req, 0, sizeof(job_step_kill_msg_t));
	req.step_id.job_id = job_id;
	req.sjob_id     = NULL;
	req.step_id.step_id = step_id;
	req.step_id.step_het_comp = NO_VAL;
	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, working_cluster_rec)<0)
		return SLURM_ERROR;

	if (rc)
		slurm_seterrno_ret(rc);

	return SLURM_SUCCESS;
}

/* slurm_kill_job2()
 */
int
slurm_kill_job2(const char *job_id, uint16_t signal, uint16_t flags)
{
	int cc, rc = SLURM_SUCCESS;
	slurm_msg_t msg;
	job_step_kill_msg_t req;

	if (job_id == NULL) {
		errno = EINVAL;
		return SLURM_ERROR;
	}

	slurm_msg_t_init(&msg);

	memset(&req, 0, sizeof(job_step_kill_msg_t));
	req.step_id.job_id = NO_VAL;
	req.sjob_id     = xstrdup(job_id);
	req.step_id.step_id = NO_VAL;
	req.step_id.step_het_comp = NO_VAL;
	req.signal      = signal;
	req.flags	= flags;
	msg.msg_type    = REQUEST_KILL_JOB;
        msg.data        = &req;

	if (slurm_send_recv_controller_rc_msg(&msg, &cc, working_cluster_rec)) {
		rc = SLURM_ERROR;
		goto fini;
	}

	if (cc)
		slurm_seterrno_ret(cc);

fini:
	xfree(req.sjob_id);
	return rc;
}

/*
 * slurm_kill_job_msg - send kill msg to and existing job or step.
 *
 * IN msg_type - msg_type to send
 * IN kill_msg - job_step_kill_msg_t parameters.
 * RET SLURM_SUCCESS on success, otherwise return SLURM_ERROR with errno set
 */
extern int slurm_kill_job_msg(uint16_t msg_type, job_step_kill_msg_t *kill_msg)
{
	int cc;
	slurm_msg_t msg;
	slurm_msg_t_init(&msg);

	msg.msg_type = msg_type;
        msg.data     = kill_msg;

	if (slurm_send_recv_controller_rc_msg(&msg, &cc, working_cluster_rec)<0)
		return SLURM_ERROR;

	if (cc)
		slurm_seterrno_ret(cc);

	return SLURM_SUCCESS;
}
