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Copyright 2015 Open Platform for NFV Project, Inc. and its contributors

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
ht .vi { color: #3333bb } /* Name.Variable.Instance */ .highlight .vm { color: #336699 } /* Name.Variable.Magic */ .highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */ } 
/*
 * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation.  2005.
 *
 *
 * This program 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.
 *
 *  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307
 *                                                                   USA
 */

#include "dtc.h"

#include <dirent.h>
#include <sys/stat.h>

static struct node *read_fstree(const char *dirname)
{
	DIR *d;
	struct dirent *de;
	struct stat st;
	struct node *tree;

	d = opendir(dirname);
	if (!d)
		die("Couldn't opendir() \"%s\": %s\n", dirname, strerror(errno));

	tree = build_node(NULL, NULL);

	while ((de = readdir(d)) != NULL) {
		char *tmpnam;

		if (streq(de->d_name, ".")
		    || streq(de->d_name, ".."))
			continue;

		tmpnam = join_path(dirname, de->d_name);

		if (lstat(tmpnam, &st) < 0)
			die("stat(%s): %s\n", tmpnam, strerror(errno));

		if (S_ISREG(st.st_mode)) {
			struct property *prop;
			FILE *pfile;

			pfile = fopen(tmpnam, "r");
			if (! pfile) {
				fprintf(stderr,
					"WARNING: Cannot open %s: %s\n",
					tmpnam, strerror(errno));
			} else {
				prop = build_property(xstrdup(de->d_name),
						      data_copy_file(pfile,
								     st.st_size));
				add_property(tree, prop);
				fclose(pfile);
			}
		} else if (S_ISDIR(st.st_mode)) {
			struct node *newchild;

			newchild = read_fstree(tmpnam);
			newchild = name_node(newchild, xstrdup(de->d_name));
			add_child(tree, newchild);
		}

		free(tmpnam);
	}

	closedir(d);
	return tree;
}

struct boot_info *dt_from_fs(const char *dirname)
{
	struct node *tree;

	tree = read_fstree(dirname);
	tree = name_node(tree, "");

	return build_boot_info(NULL, tree, guess_boot_cpuid(tree));
}