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 }