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      1 /*	$NetBSD: fstree.c,v 1.1.1.3 2019/12/22 12:34:04 skrll Exp $	*/
      2 
      3 // SPDX-License-Identifier: GPL-2.0-or-later
      4 /*
      5  * (C) Copyright David Gibson <dwg (at) au1.ibm.com>, IBM Corporation.  2005.
      6  */
      7 
      8 #include "dtc.h"
      9 
     10 #include <dirent.h>
     11 #include <sys/stat.h>
     12 
     13 static struct node *read_fstree(const char *dirname)
     14 {
     15 	DIR *d;
     16 	struct dirent *de;
     17 	struct stat st;
     18 	struct node *tree;
     19 
     20 	d = opendir(dirname);
     21 	if (!d)
     22 		die("Couldn't opendir() \"%s\": %s\n", dirname, strerror(errno));
     23 
     24 	tree = build_node(NULL, NULL, NULL);
     25 
     26 	while ((de = readdir(d)) != NULL) {
     27 		char *tmpname;
     28 
     29 		if (streq(de->d_name, ".")
     30 		    || streq(de->d_name, ".."))
     31 			continue;
     32 
     33 		tmpname = join_path(dirname, de->d_name);
     34 
     35 		if (lstat(tmpname, &st) < 0)
     36 			die("stat(%s): %s\n", tmpname, strerror(errno));
     37 
     38 		if (S_ISREG(st.st_mode)) {
     39 			struct property *prop;
     40 			FILE *pfile;
     41 
     42 			pfile = fopen(tmpname, "rb");
     43 			if (! pfile) {
     44 				fprintf(stderr,
     45 					"WARNING: Cannot open %s: %s\n",
     46 					tmpname, strerror(errno));
     47 			} else {
     48 				prop = build_property(xstrdup(de->d_name),
     49 						      data_copy_file(pfile,
     50 								     st.st_size),
     51 						      NULL);
     52 				add_property(tree, prop);
     53 				fclose(pfile);
     54 			}
     55 		} else if (S_ISDIR(st.st_mode)) {
     56 			struct node *newchild;
     57 
     58 			newchild = read_fstree(tmpname);
     59 			newchild = name_node(newchild, xstrdup(de->d_name));
     60 			add_child(tree, newchild);
     61 		}
     62 
     63 		free(tmpname);
     64 	}
     65 
     66 	closedir(d);
     67 	return tree;
     68 }
     69 
     70 struct dt_info *dt_from_fs(const char *dirname)
     71 {
     72 	struct node *tree;
     73 
     74 	tree = read_fstree(dirname);
     75 	tree = name_node(tree, "");
     76 
     77 	return build_dt_info(DTSF_V1, NULL, tree, guess_boot_cpuid(tree));
     78 }
     79