fstree.c

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/*
 * (C) Copyright David Gibson <[email protected]>, 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\n", 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\n", 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\n",
                    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));
}