vfs: Add streams_depot implementation of rename_stream()

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>

diff --git a/source3/modules/vfs_streams_depot.c b/source3/modules/vfs_streams_depot.c
index fd44eef76a55ccaad27e527bf4e571a883fd1c33..060e3a5aaaa305ecaea2307d38bcc511066c0e8e 100644 (file)
--- a/source3/modules/vfs_streams_depot.c
+++ b/source3/modules/vfs_streams_depot.c
@@ -1070,8 +1070,73 @@ static int streams_depot_rename_stream(struct vfs_handle_struct *handle,
                                       const char *dst_name,
                                       bool replace_if_exists)
 {
-       errno = ENOSYS;
-       return -1;
+       struct smb_filename *basename = src_fsp->base_fsp->fsp_name;
+       struct smb_filename *stream_dir = NULL;
+       struct smb_filename smb_fname_src_stream = {};
+       struct smb_filename smb_fname_dst_stream = {};
+       struct vfs_rename_how how = {.flags = 0};
+       int ret;
+
+       ret = stream_dir_pathref(talloc_tos(),
+                                handle,
+                                basename,
+                                &basename->st,
+                                false,
+                                &stream_dir);
+       if (ret != 0) {
+               errno = ret;
+               ret = -1;
+               goto done;
+       }
+
+       ret = stream_name(talloc_tos(),
+                         src_fsp->fsp_name->stream_name,
+                         &smb_fname_src_stream.base_name);
+       if (ret != 0) {
+               errno = ret;
+               ret = -1;
+               goto done;
+       }
+
+       ret = stream_name(talloc_tos(),
+                         dst_name,
+                         &smb_fname_dst_stream.base_name);
+       if (ret != 0) {
+               errno = ret;
+               ret = -1;
+               goto done;
+       }
+
+       if (!replace_if_exists) {
+               struct stat_ex st;
+
+               ret = SMB_VFS_FSTATAT(handle->conn,
+                                     stream_dir->fsp,
+                                     &smb_fname_dst_stream,
+                                     &st,
+                                     AT_SYMLINK_NOFOLLOW);
+               if (ret == 0) {
+                       errno = EEXIST;
+                       ret = -1;
+                       goto done;
+               }
+       }
+
+       ret = SMB_VFS_NEXT_RENAMEAT(handle,
+                                   stream_dir->fsp,
+                                   &smb_fname_src_stream,
+                                   stream_dir->fsp,
+                                   &smb_fname_dst_stream,
+                                   &how);
+done:
+       {
+               int err = errno;
+               TALLOC_FREE(stream_dir);
+               TALLOC_FREE(smb_fname_src_stream.base_name);
+               TALLOC_FREE(smb_fname_dst_stream.base_name);
+               errno = err;
+       }
+       return ret;
 }
 
 static bool add_one_stream(TALLOC_CTX *mem_ctx, unsigned int *num_streams,