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.
35 extern int find_real_root_device_name(char* name)
39 struct stat statBuf, rootStat;
40 char fileName[BUFSIZ];
42 if (stat("/", &rootStat) != 0) {
43 error_msg("could not stat '/'");
47 dir = opendir("/dev");
49 error_msg("could not open '/dev'");
53 while((entry = readdir(dir)) != NULL) {
55 /* Must skip ".." since that is "/", and so we
56 * would get a false positive on ".." */
57 if (strcmp(entry->d_name, "..") == 0)
60 snprintf( fileName, strlen(name)+1, "/dev/%s", entry->d_name);
62 if (stat(fileName, &statBuf) != 0)
64 /* Some char devices have the same dev_t as block
65 * devices, so make sure this is a block device */
66 if (! S_ISBLK(statBuf.st_mode))
68 if (statBuf.st_rdev == rootStat.st_rdev) {
69 strcpy(name, fileName);