Vodz, last_patch_88

1 files changed, 7 insertions, 4 deletions

diff --git a/libbb/find_root_device.c b/libbb/find_root_device.c
index b12d392a2..654f17145 100644
--- a/libbb/find_root_device.c
+++ b/libbb/find_root_device.c
@@ -48,11 +48,14 @@ extern char *find_real_root_device_name(const char* name)
                         bb_perror_msg("could not open '/dev'");
                 else {
                         while((entry = readdir(dir)) != NULL) {
-
-                                fileName = concat_subpath_file("/dev", entry->d_name);
-                                if(fileName == NULL)
+                                const char *name = entry->d_name;
+                                /* Must skip ".." since that is "/", and so we
+                                 * would get a false positive on ".."  */
+                                if (name[0] == '.' && name[1] == '.' && !name[2])
                                         continue;
 
+                                fileName = concat_path_file("/dev", 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 && 
@@ -66,7 +69,7 @@ extern char *find_real_root_device_name(const char* name)
                 }
         }
         if(fileName==NULL)
-                fileName=bb_xstrdup("/dev/root");
+                fileName = bb_xstrdup("/dev/root");
         return fileName;
 }