Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 1 | /* vi: set sw=4 ts=4: */ |
| 2 | /* |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 3 | * Utility routines. |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 4 | * |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 5 | * Copyright (C) 1999,2000 by Lineo, inc. and Erik Andersen |
| 6 | * Copyright (C) 1999,2000,2001 by Erik Andersen <andersee@debian.org> |
Eric Andersen | 8b113f9 | 2001-06-01 21:47:15 +0000 | [diff] [blame] | 7 | * Patched by a bunch of people. Feel free to acknowledge your work. |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 8 | * |
| 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. |
| 13 | * |
| 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. |
| 18 | * |
| 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 |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 22 | */ |
| 23 | |
| 24 | #include <stdio.h> |
| 25 | #include <string.h> |
| 26 | #include <dirent.h> |
Eric Andersen | c911a43 | 2001-05-15 17:42:16 +0000 | [diff] [blame] | 27 | #include <stdlib.h> |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 28 | #include "libbb.h" |
| 29 | |
| 30 | |
| 31 | |
Eric Andersen | c911a43 | 2001-05-15 17:42:16 +0000 | [diff] [blame] | 32 | extern char *find_real_root_device_name(const char* name) |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 33 | { |
| 34 | DIR *dir; |
| 35 | struct dirent *entry; |
| 36 | struct stat statBuf, rootStat; |
Eric Andersen | 8b113f9 | 2001-06-01 21:47:15 +0000 | [diff] [blame] | 37 | char *fileName = NULL; |
Matt Kraai | 774d135 | 2001-05-23 14:45:09 +0000 | [diff] [blame] | 38 | dev_t dev; |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 39 | |
Eric Andersen | 8b113f9 | 2001-06-01 21:47:15 +0000 | [diff] [blame] | 40 | if (stat("/", &rootStat) != 0) |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 41 | bb_perror_msg("could not stat '/'"); |
Eric Andersen | 8b113f9 | 2001-06-01 21:47:15 +0000 | [diff] [blame] | 42 | else { |
| 43 | if ((dev = rootStat.st_rdev)==0) |
| 44 | dev=rootStat.st_dev; |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 45 | |
Eric Andersen | 8b113f9 | 2001-06-01 21:47:15 +0000 | [diff] [blame] | 46 | dir = opendir("/dev"); |
| 47 | if (!dir) |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 48 | bb_perror_msg("could not open '/dev'"); |
Eric Andersen | 8b113f9 | 2001-06-01 21:47:15 +0000 | [diff] [blame] | 49 | else { |
| 50 | while((entry = readdir(dir)) != NULL) { |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 51 | |
Glenn L McGrath | 393183d | 2003-05-26 14:07:50 +0000 | [diff] [blame^] | 52 | fileName = concat_subpath_file("/dev", entry->d_name); |
| 53 | if(fileName == NULL) |
Eric Andersen | 8b113f9 | 2001-06-01 21:47:15 +0000 | [diff] [blame] | 54 | continue; |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 55 | |
Eric Andersen | 8b113f9 | 2001-06-01 21:47:15 +0000 | [diff] [blame] | 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) |
| 61 | break; |
| 62 | free(fileName); |
| 63 | fileName=NULL; |
| 64 | } |
| 65 | closedir(dir); |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 66 | } |
| 67 | } |
Eric Andersen | 8b113f9 | 2001-06-01 21:47:15 +0000 | [diff] [blame] | 68 | if(fileName==NULL) |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 69 | fileName=bb_xstrdup("/dev/root"); |
Matt Kraai | 774d135 | 2001-05-23 14:45:09 +0000 | [diff] [blame] | 70 | return fileName; |
Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 71 | } |
| 72 | |
| 73 | |
| 74 | /* END CODE */ |
| 75 | /* |
| 76 | Local Variables: |
| 77 | c-file-style: "linux" |
| 78 | c-basic-offset: 4 |
| 79 | tab-width: 4 |
| 80 | End: |
| 81 | */ |