fstree.c revision 318102 
1/*
2 * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation.  2005.
3 *
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation; either version 2 of the
8 * License, or (at your option) any later version.
9 *
10 *  This program is distributed in the hope that it will be useful,
11 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
12 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13 *  General Public License for more details.
14 *
15 *  You should have received a copy of the GNU General Public License
16 *  along with this program; if not, write to the Free Software
17 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
18 *                                                                   USA
19 */
20
21#include "dtc.h"
22
23#include <dirent.h>
24#include <sys/stat.h>
25
26static struct node *read_fstree(const char *dirname)
27{
28	DIR *d;
29	struct dirent *de;
30	struct stat st;
31	struct node *tree;
32
33	d = opendir(dirname);
34	if (!d)
35		die("Couldn't opendir() \"%s\": %s\n", dirname, strerror(errno));
36
37	tree = build_node(NULL, NULL);
38
39	while ((de = readdir(d)) != NULL) {
40		char *tmpname;
41
42		if (streq(de->d_name, ".")
43		    || streq(de->d_name, ".."))
44			continue;
45
46		tmpname = join_path(dirname, de->d_name);
47
48		if (lstat(tmpname, &st) < 0)
49			die("stat(%s): %s\n", tmpname, strerror(errno));
50
51		if (S_ISREG(st.st_mode)) {
52			struct property *prop;
53			FILE *pfile;
54
55			pfile = fopen(tmpname, "rb");
56			if (! pfile) {
57				fprintf(stderr,
58					"WARNING: Cannot open %s: %s\n",
59					tmpname, strerror(errno));
60			} else {
61				prop = build_property(xstrdup(de->d_name),
62						      data_copy_file(pfile,
63								     st.st_size));
64				add_property(tree, prop);
65				fclose(pfile);
66			}
67		} else if (S_ISDIR(st.st_mode)) {
68			struct node *newchild;
69
70			newchild = read_fstree(tmpname);
71			newchild = name_node(newchild, xstrdup(de->d_name));
72			add_child(tree, newchild);
73		}
74
75		free(tmpname);
76	}
77
78	closedir(d);
79	return tree;
80}
81
82struct dt_info *dt_from_fs(const char *dirname)
83{
84	struct node *tree;
85
86	tree = read_fstree(dirname);
87	tree = name_node(tree, "");
88
89	return build_dt_info(DTSF_V1, NULL, tree, guess_boot_cpuid(tree));
90}
91