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kernel/linux-imx6_3.14.28/scripts/dtc/fstree.c 2.22 KB
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  /*
   * (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
  ", 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
  ", 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
  ",
  					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));
  }