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author | Andreas Baumann <mail@andreasbaumann.cc> | 2015-01-03 12:04:58 +0100 |
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committer | Andreas Baumann <mail@andreasbaumann.cc> | 2015-01-03 12:04:58 +0100 |
commit | 008d0be72b2f160382c6e880765e96b64a050c65 (patch) | |
tree | 36f48a98a3815a408e2ce1693dd182af90f80305 /release/src/router/busybox/libbb/find_root_device.c | |
parent | 611becfb8726c60cb060368541ad98191d4532f5 (diff) | |
download | tomato-008d0be72b2f160382c6e880765e96b64a050c65.tar.gz tomato-008d0be72b2f160382c6e880765e96b64a050c65.tar.bz2 |
imported original firmware WRT54GL_v4.30.11_11_US
Diffstat (limited to 'release/src/router/busybox/libbb/find_root_device.c')
-rw-r--r-- | release/src/router/busybox/libbb/find_root_device.c | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/release/src/router/busybox/libbb/find_root_device.c b/release/src/router/busybox/libbb/find_root_device.c new file mode 100644 index 00000000..f8f68464 --- /dev/null +++ b/release/src/router/busybox/libbb/find_root_device.c @@ -0,0 +1,84 @@ +/* vi: set sw=4 ts=4: */ +/* + * Copyright (C) 2000,2001 by Lineo, inc. + * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org> + * + * Patched by a bunch of people. Feel free to acknowledge your work. + * + * 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 <stdio.h> +#include <string.h> +#include <dirent.h> +#include <stdlib.h> +#include "libbb.h" + + + +extern char *find_real_root_device_name(const char* name) +{ + DIR *dir; + struct dirent *entry; + struct stat statBuf, rootStat; + char *fileName = NULL; + dev_t dev; + + if (stat("/", &rootStat) != 0) + perror_msg("could not stat '/'"); + else { + if ((dev = rootStat.st_rdev)==0) + dev=rootStat.st_dev; + + dir = opendir("/dev"); + if (!dir) + perror_msg("could not open '/dev'"); + else { + while((entry = readdir(dir)) != NULL) { + + /* Must skip ".." since that is "/", and so we + * would get a false positive on ".." */ + if (strcmp(entry->d_name, "..") == 0) + continue; + + fileName = concat_path_file("/dev", entry->d_name); + + /* Some char devices have the same dev_t as block + * devices, so make sure this is a block device */ + if (stat(fileName, &statBuf) == 0 && + S_ISBLK(statBuf.st_mode)!=0 && + statBuf.st_rdev == dev) + break; + free(fileName); + fileName=NULL; + } + closedir(dir); + } + } + if(fileName==NULL) + fileName=xstrdup("/dev/root"); + return fileName; +} + + +/* END CODE */ +/* +Local Variables: +c-file-style: "linux" +c-basic-offset: 4 +tab-width: 4 +End: +*/ |