drm/i915: Create stolen memory region from local memory
[linux-2.6-microblaze.git] / scripts / dtc / fstree.c
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
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
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 }