From: Jeremy Allison <jra@samba.org>
Date: Thu, 11 Feb 2021 19:55:16 +0000 (-0800)
Subject: s3: VFS: unityed_media: Fix um_readlinkat() to cope with real directory fsps.
X-Git-Tag: tevent-0.11.0~1753
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=e884793cf280fe21cfe4c9d003d74342c50f670f;p=thirdparty%2Fsamba.git

s3: VFS: unityed_media: Fix um_readlinkat() to cope with real directory fsps.

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Noel Power <noel.power@suse.com>
---

diff --git a/source3/modules/vfs_unityed_media.c b/source3/modules/vfs_unityed_media.c
index fea026e82c9..2acd80d7dda 100644
--- a/source3/modules/vfs_unityed_media.c
+++ b/source3/modules/vfs_unityed_media.c
@@ -1322,10 +1322,19 @@ static int um_readlinkat(vfs_handle_struct *handle,
 {
 	int status;
 	struct smb_filename *client_fname = NULL;
+	struct smb_filename *full_fname = NULL;
 
 	DEBUG(10, ("Entering um_readlinkat\n"));
 
-	if (!is_in_media_files(smb_fname->base_name)) {
+	full_fname = full_path_from_dirfsp_atname(talloc_tos(),
+						dirfsp,
+						smb_fname);
+	if (full_fname == NULL) {
+		return -1;
+	}
+
+	if (!is_in_media_files(full_fname->base_name)) {
+		TALLOC_FREE(full_fname);
 		return SMB_VFS_NEXT_READLINKAT(handle,
 				dirfsp,
 				smb_fname,
@@ -1334,18 +1343,19 @@ static int um_readlinkat(vfs_handle_struct *handle,
 	}
 
 	status = alloc_get_client_smb_fname(handle, talloc_tos(),
-					    smb_fname, &client_fname);
+					    full_fname, &client_fname);
 	if (status != 0) {
 		goto err;
 	}
 
 	status = SMB_VFS_NEXT_READLINKAT(handle,
-				dirfsp,
+				handle->conn->cwd_fsp,
 				client_fname,
 				buf,
 				bufsiz);
 
 err:
+	TALLOC_FREE(full_fname);
 	TALLOC_FREE(client_fname);
 	return status;
 }