[PBCKP-159] fix false directory init, add test to init.py

Tags: pg_probackup

Author: Sofia Kopikova

src/init.c

@@ -31,6 +31,16 @@ do_init(CatalogState *catalogState)
 		elog(ERROR, "cannot open backup catalog directory \"%s\": %s",
 			catalogState->catalog_path, strerror(errno_tmp));
 	}
+	else if (results == 1)
+	{
+		/* Check whether we have all(rwx) rights for directory */
+		if (access(catalogState->catalog_path, R_OK | W_OK | X_OK) == -1)
+		{
+			int errno_tmp = errno;
+			elog(ERROR, "cannot access backup catalog directory \"%s\": %s",
+				catalogState->catalog_path, strerror(errno_tmp));
+		}
+	}
 
 	/* create backup catalog root directory */
 	dir_create_dir(catalogState->catalog_path, DIR_PERMISSION, false);

tests/init.py

@@ -1,4 +1,5 @@
 import os
+import stat # for chmod
 import unittest
 from .helpers.ptrack_helpers import dir_files, ProbackupTest, ProbackupException
 import shutil
@@ -86,6 +87,29 @@ def test_already_exist(self):
 
         # Clean after yourself
         self.del_test_dir(module_name, fname)
+        
+    # @unittest.skip("skip")
+    def test_no_rights_for_directory(self):
+        """Failure with backup catalog existed and empty but user has no writing permissions"""
+        fname = self.id().split(".")[3]
+        backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
+        os.mkdir(backup_dir)
+        os.chmod(backup_dir, stat.S_IREAD) # set read-only flag for current user
+        assert os.access(backup_dir, os.R_OK) and not os.access(backup_dir, os.W_OK)
+        node = self.make_simple_node(base_dir=os.path.join(module_name, fname, 'node'))
+        self.init_pb(backup_dir)
+        try:
+            self.show_pb(backup_dir, 'node')
+            self.assertEqual(1, 0, 'Expecting Error due to initialization in empty directory with no rithts for writing. Output: {0} \n CMD: {1}'.format(
+                repr(self.output), self.cmd))
+        except ProbackupException as e:
+            self.assertIn(
+                "ERROR: Instance 'node' does not exist in this backup catalog",
+                e.message,
+                '\n Unexpected Error Message: {0}\n CMD: {1}'.format(repr(e.message), self.cmd))
+
+        # Clean after yourself
+        self.del_test_dir(module_name, fname)
 
     # @unittest.skip("skip")
     def test_abs_path(self):