1 /* vi: set sw=4 ts=4: */
5 * Copyright (C) 1999,2000 by Lineo, inc. and Erik Andersen
6 * Copyright (C) 1999,2000,2001 by Erik Andersen <andersee@debian.org>
7 * Patched by a bunch of people. Feel free to acknowledge your work.
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
32 extern char *find_real_root_device_name(const char* name)
36 struct stat statBuf, rootStat;
37 char *fileName = NULL;
40 if (stat("/", &rootStat) != 0)
41 bb_perror_msg("could not stat '/'");
43 if ((dev = rootStat.st_rdev)==0)
46 dir = opendir("/dev");
48 bb_perror_msg("could not open '/dev'");
50 while((entry = readdir(dir)) != NULL) {
52 fileName = concat_subpath_file("/dev", entry->d_name);
56 /* Some char devices have the same dev_t as block
57 * devices, so make sure this is a block device */
58 if (stat(fileName, &statBuf) == 0 &&
59 S_ISBLK(statBuf.st_mode)!=0 &&
60 statBuf.st_rdev == dev)
69 fileName=bb_xstrdup("/dev/root");