1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation. 2005.
4 */
5
6 #include "dtc.h"
7
8 #include <dirent.h>
9 #include <sys/stat.h>
10
read_fstree(const char * dirname)11 static struct node *read_fstree(const char *dirname)
12 {
13 DIR *d;
14 struct dirent *de;
15 struct stat st;
16 struct node *tree;
17
18 d = opendir(dirname);
19 if (!d)
20 die("Couldn't opendir() \"%s\": %s\n", dirname, strerror(errno));
21
22 tree = build_node(NULL, NULL, NULL);
23
24 while ((de = readdir(d)) != NULL) {
25 char *tmpname;
26
27 if (streq(de->d_name, ".")
28 || streq(de->d_name, ".."))
29 continue;
30
31 tmpname = join_path(dirname, de->d_name);
32
33 if (stat(tmpname, &st) < 0)
34 die("stat(%s): %s\n", tmpname, strerror(errno));
35
36 if (S_ISREG(st.st_mode)) {
37 struct property *prop;
38 FILE *pfile;
39
40 pfile = fopen(tmpname, "rb");
41 if (! pfile) {
42 fprintf(stderr,
43 "WARNING: Cannot open %s: %s\n",
44 tmpname, strerror(errno));
45 } else {
46 prop = build_property(xstrdup(de->d_name),
47 data_copy_file(pfile,
48 st.st_size),
49 NULL);
50 add_property(tree, prop);
51 fclose(pfile);
52 }
53 } else if (S_ISDIR(st.st_mode)) {
54 struct node *newchild;
55
56 newchild = read_fstree(tmpname);
57 newchild = name_node(newchild, xstrdup(de->d_name));
58 add_child(tree, newchild);
59 }
60
61 free(tmpname);
62 }
63
64 closedir(d);
65 return tree;
66 }
67
dt_from_fs(const char * dirname)68 struct dt_info *dt_from_fs(const char *dirname)
69 {
70 struct node *tree;
71
72 tree = read_fstree(dirname);
73 tree = name_node(tree, "");
74
75 return build_dt_info(DTSF_V1, NULL, tree, guess_boot_cpuid(tree));
76 }
77