1 /* vi: set sw=4 ts=4: */
5 * Copyright (C) tons of folks. Tracking down who wrote what
6 * isn't something I'm going to worry about... If you wrote something
7 * here, please 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
23 * Based in part on code from sash, Copyright (c) 1999 by David I. Bell
24 * Permission has been granted to redistribute this code under the GPL.
36 extern char *find_real_root_device_name(const char* name)
40 struct stat statBuf, rootStat;
44 if (stat("/", &rootStat) != 0) {
45 perror_msg("could not stat '/'");
48 if ((dev = rootStat.st_rdev)==0) dev=rootStat.st_dev;
50 dir = opendir("/dev");
52 perror_msg("could not open '/dev'");
56 while((entry = readdir(dir)) != NULL) {
58 /* Must skip ".." since that is "/", and so we
59 * would get a false positive on ".." */
60 if (strcmp(entry->d_name, "..") == 0)
63 fileName = concat_path_file("/dev/", entry->d_name);
65 /* Some char devices have the same dev_t as block
66 * devices, so make sure this is a block device */
67 if (stat(fileName, &statBuf) == 0 &&
68 S_ISBLK(statBuf.st_mode)!=0 &&
69 statBuf.st_rdev == dev) {
77 /* don't use stack space, caller expects to free() result */
79 sprintf(fileName,"(rdev %u)",(unsigned int) rootStat.st_rdev);