diff options
| -rw-r--r-- | libdiskfs/dir-rename.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libdiskfs/dir-rename.c b/libdiskfs/dir-rename.c index 747c6666..867e395d 100644 --- a/libdiskfs/dir-rename.c +++ b/libdiskfs/dir-rename.c @@ -19,6 +19,7 @@ #include "priv.h" #include "fs_S.h" +#include <string.h> /* To avoid races in checkpath, and to prevent a directory from being simultaneously renamed by two processes, we serialize all renames of @@ -44,6 +45,10 @@ diskfs_S_dir_rename (struct protid *fromcred, if (! tocred) return EXDEV; + if (!strcmp (fromname, ".") || !strcmp (fromname, "..") + || !strcmp (toname, ".") || !strcmp (toname, "..")) + return EINVAL; + if (tocred->po->shadow_root != fromcred->po->shadow_root) /* Same translator, but in different shadow trees. */ return EXDEV; |