diff options
| -rw-r--r-- | utility.c | 36 |
1 files changed, 36 insertions, 0 deletions
@@ -1469,6 +1469,42 @@ extern char *find_unused_loop_device(void) } #endif /* BB_FEATURE_MOUNT_LOOP */ +#if defined BB_MOUNT +char* find_real_root_device_name(void) +{ + int gotIt=0; + DIR *dir; + struct dirent *entry; + struct stat statBuf, rootStat; + char fileName[BUFSIZ]; + + if (stat("/", &rootStat) != 0) + fatalError("Wierd. I could not stat '/'\n"); + + if (!(dir = opendir("/dev")); + fatalError("Wierd. I could not open '/dev'\n"); + + 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; + + sprintf( fileName, "/dev/%s", entry->d_name); + + if (stat(fileName, &statBuf) != 0) + continue; + if (statBuf.st_rdev == rootStat.st_rdev) { + return (strdup(fileName)); + } + } + + return( NULL); +} +#endif + + #if defined BB_MTAB #define whine_if_fstab_is_missing() {} #else |