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Diffstat (limited to 'fs/xfs/libxfs/xfs_dir2.c')
-rw-r--r--fs/xfs/libxfs/xfs_dir2.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/fs/xfs/libxfs/xfs_dir2.c b/fs/xfs/libxfs/xfs_dir2.c
index 229152cd1a24..156ce95c9c45 100644
--- a/fs/xfs/libxfs/xfs_dir2.c
+++ b/fs/xfs/libxfs/xfs_dir2.c
@@ -703,3 +703,20 @@ xfs_dir2_shrink_inode(
xfs_trans_log_inode(tp, dp, XFS_ILOG_CORE);
return 0;
}
+
+/* Returns true if the directory entry name is valid. */
+bool
+xfs_dir2_namecheck(
+ const void *name,
+ size_t length)
+{
+ /*
+ * MAXNAMELEN includes the trailing null, but (name/length) leave it
+ * out, so use >= for the length check.
+ */
+ if (length >= MAXNAMELEN)
+ return false;
+
+ /* There shouldn't be any slashes or nulls here */
+ return !memchr(name, '/', length) && !memchr(name, 0, length);
+}