vfs: Implement shadow_copy2_get_real_filename_at()

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

diff --git a/source3/modules/vfs_shadow_copy2.c b/source3/modules/vfs_shadow_copy2.c
index cde46a9023bce34bad8cb18dfb007db5ad8d9238..673baf55651a317c28d500adf92f390dda6ace94 100644 (file)
--- a/source3/modules/vfs_shadow_copy2.c
+++ b/source3/modules/vfs_shadow_copy2.c
@@ -2609,9 +2609,91 @@ static NTSTATUS shadow_copy2_get_real_filename_at(
        TALLOC_CTX *mem_ctx,
        char **found_name)
 {
-       NTSTATUS status = shadow_copy2_get_real_filename(
-               handle, dirfsp->fsp_name, name, mem_ctx, found_name);
-       return status;
+       struct shadow_copy2_private *priv = NULL;
+       time_t timestamp = 0;
+       char *stripped = NULL;
+       char *conv;
+       struct smb_filename *conv_fname = NULL;
+       NTSTATUS status;
+       bool ok;
+
+       SMB_VFS_HANDLE_GET_DATA(handle, priv, struct shadow_copy2_private,
+                               return NT_STATUS_INTERNAL_ERROR);
+
+       DBG_DEBUG("Path=[%s] name=[%s]\n", fsp_str_dbg(dirfsp), name);
+
+       ok = shadow_copy2_strip_snapshot(
+               talloc_tos(), handle, dirfsp->fsp_name, &timestamp, &stripped);
+       if (!ok) {
+               status = map_nt_error_from_unix(errno);
+               DEBUG(10, ("shadow_copy2_strip_snapshot failed\n"));
+               return status;
+       }
+       if (timestamp == 0) {
+               DEBUG(10, ("timestamp == 0\n"));
+               return SMB_VFS_NEXT_GET_REAL_FILENAME_AT(
+                       handle, dirfsp, name, mem_ctx, found_name);
+       }
+
+       /*
+        * Note that stripped may be an empty string "" if path was ".". As
+        * shadow_copy2_convert() combines "" with the shadow-copy tree connect
+        * root fullpath and get_real_filename_full_scan() has an explicit check
+        * for "" this works.
+        */
+       DBG_DEBUG("stripped [%s]\n", stripped);
+
+       conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
+       if (conv == NULL) {
+               status = map_nt_error_from_unix(errno);
+               DBG_DEBUG("shadow_copy2_convert [%s] failed: %s\n",
+                         stripped,
+                         strerror(errno));
+               return status;
+       }
+
+       status = synthetic_pathref(
+               talloc_tos(),
+               dirfsp->conn->cwd_fsp,
+               conv,
+               NULL,
+               NULL,
+               0,
+               0,
+               &conv_fname);
+       if (!NT_STATUS_IS_OK(status)) {
+               return status;
+       }
+
+       DEBUG(10, ("Calling NEXT_GET_REAL_FILE_NAME for conv=[%s], "
+                  "name=[%s]\n", conv, name));
+       status = SMB_VFS_NEXT_GET_REAL_FILENAME_AT(
+               handle, conv_fname->fsp, name, mem_ctx, found_name);
+       DEBUG(10, ("NEXT_REAL_FILE_NAME returned %s\n", nt_errstr(status)));
+       if (NT_STATUS_IS_OK(status)) {
+               TALLOC_FREE(conv_fname);
+               return NT_STATUS_OK;
+       }
+       if (!NT_STATUS_EQUAL(status, NT_STATUS_NOT_SUPPORTED)) {
+               TALLOC_FREE(conv_fname);
+               TALLOC_FREE(conv);
+               return NT_STATUS_NOT_SUPPORTED;
+       }
+
+       status = get_real_filename_full_scan_at(
+               conv_fname->fsp, name, false, mem_ctx, found_name);
+       TALLOC_FREE(conv_fname);
+       if (!NT_STATUS_IS_OK(status)) {
+               DBG_DEBUG("Scan [%s] for [%s] failed\n",
+                         conv, name);
+               return status;
+       }
+
+       DBG_DEBUG("Scan [%s] for [%s] returned [%s]\n",
+                 conv, name, *found_name);
+
+       TALLOC_FREE(conv);
+       return NT_STATUS_OK;
 }
 
 static const char *shadow_copy2_connectpath(struct vfs_handle_struct *handle,