~lnykryn/upstart/global-configuration

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/* upstart
 *
 * parse_conf.c - general configuration parsing
 *
 * Copyright © 2009 Canonical Ltd.
 * Author: Scott James Remnant <scott@netsplit.com>.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2, as
 * published by the Free Software Foundation.
 *
 * This program 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 this program; 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 /* HAVE_CONFIG_H */


#include <nih/macros.h>
#include <nih/alloc.h>
#include <nih/list.h>
#include <nih/config.h>
#include <nih/logging.h>
#include <nih/error.h>

#include "conf.h"
#include "parse_conf.h"


/**
 * stanzas:
 *
 * This is the table of known configuration stanzas and the functions
 * that handle parsing them.
 **/
static NihConfigStanza stanzas[] = {
	NIH_CONFIG_LAST
};


/**
 * parse_conf:
 * @conffile: configuration file being parsed,
 * @file: file or string to parse,
 * @len: length of @file,
 * @pos: offset within @file,
 * @lineno: line number.
 *
 * This function is used to parse a job definition from @file, taking the
 * name from the stanza itself.  A block is expected containing a sequence
 * of stanzas is expected, defining the parameters of the job.
 *
 * The necessary configuration item is allocated and attached to the file
 * automatically.
 *
 * Returns: zero on success, negative value on raised error.
 **/
JobClass *
parse_conf (const void *parent,
	   Session    *session,
	   JobClass   *update,
	   const char *file,
	   size_t      len,
	   size_t     *pos,
	   size_t     *lineno)
{
 	JobClass *class;

	nih_assert (file != NULL);
	nih_assert (pos != NULL);

	if (update) {
		class = update;
		nih_debug ("Reusing template JobClass");
	} else {
		nih_debug ("Creating new template JobClass");
		class = job_class_new (parent, "GLOBAL", NULL, session);
		if (! class)
			nih_return_system_error (NULL);
	}

	if (nih_config_parse_file (file, len, pos, lineno,
				stanzas, class) < 0) {
		if (!update)
			nih_free (class);
		return NULL;
	}

	return class;
}