/*
 * Copyright (c) 2012-2015 Dmitry V. Levin <ldv@altlinux.org>
 * Copyright (c) 2014-2017 The strace developers.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "defs.h"

#include "xlat/syslog_action_type.h"
#include "xlat/syslog_console_levels.h"

SYS_FUNC(syslog)
{
	int type = tcp->u_arg[0];
	int len = tcp->u_arg[2];

	if (entering(tcp)) {
		/* type */
		printxval_ex(syslog_action_type, type, "SYSLOG_ACTION_???",
			     XLAT_STYLE_VERBOSE | XLAT_STYLE_FMT_D);
	}

	switch (type) {
	/* Those commands have bufp and len ignored */
	case SYSLOG_ACTION_CLOSE:
	case SYSLOG_ACTION_OPEN:
	case SYSLOG_ACTION_CLEAR:
	case SYSLOG_ACTION_CONSOLE_OFF:
	case SYSLOG_ACTION_CONSOLE_ON:
	case SYSLOG_ACTION_SIZE_UNREAD:
	case SYSLOG_ACTION_SIZE_BUFFER:
		return RVAL_DECODED;

	case SYSLOG_ACTION_READ:
	case SYSLOG_ACTION_READ_ALL:
	case SYSLOG_ACTION_READ_CLEAR:
		if (entering(tcp)) {
			tprints(", ");
			return 0;
		}
		break;

	case SYSLOG_ACTION_CONSOLE_LEVEL: /* Uses len */
		tprints(", ");
		printaddr64(tcp->u_arg[1]);
		tprints(", ");
		printxval_ex(syslog_console_levels, len, "LOGLEVEL_???",
			     XLAT_STYLE_VERBOSE | XLAT_STYLE_FMT_D);
		return RVAL_DECODED;

	default:
		tprints(", ");
		printaddr64(tcp->u_arg[1]);
		tprintf(", %d", len);
		return RVAL_DECODED;
	}

	/* syscall exit handler for SYSLOG_ACTION_READ* */

	/* bufp */
	if (syserror(tcp))
		printaddr64(tcp->u_arg[1]);
	else
		printstrn(tcp, tcp->u_arg[1], tcp->u_rval);
	/* len */
	tprintf(", %d", len);

	return 0;
}