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CREATE EXTENSION adminpack;
-- create new file
SELECT pg_file_write('test_file1', 'test1', false);
SELECT pg_read_file('test_file1');
-- append
SELECT pg_file_write('test_file1', 'test1', true);
SELECT pg_read_file('test_file1');
-- error, already exists
SELECT pg_file_write('test_file1', 'test1', false);
SELECT pg_read_file('test_file1');
-- disallowed file paths
SELECT pg_file_write('../test_file0', 'test0', false);
SELECT pg_file_write('/tmp/test_file0', 'test0', false);
SELECT pg_file_write(current_setting('data_directory') || '/test_file4', 'test4', false);
SELECT pg_file_write(current_setting('data_directory') || '/../test_file4', 'test4', false);
-- rename file
SELECT pg_file_rename('test_file1', 'test_file2');
SELECT pg_read_file('test_file1'); -- not there
SELECT pg_read_file('test_file2');
-- error
SELECT pg_file_rename('test_file1', 'test_file2');
-- rename file and archive
SELECT pg_file_write('test_file3', 'test3', false);
SELECT pg_file_rename('test_file2', 'test_file3', 'test_file3_archive');
SELECT pg_read_file('test_file2'); -- not there
SELECT pg_read_file('test_file3');
SELECT pg_read_file('test_file3_archive');
-- unlink
SELECT pg_file_unlink('test_file1'); -- does not exist
SELECT pg_file_unlink('test_file2'); -- does not exist
SELECT pg_file_unlink('test_file3');
SELECT pg_file_unlink('test_file3_archive');
SELECT pg_file_unlink('test_file4');
-- superuser checks
CREATE USER regress_user1;
SET ROLE regress_user1;
SELECT pg_file_write('test_file0', 'test0', false);
SELECT pg_file_rename('test_file0', 'test_file0');
SELECT pg_file_unlink('test_file0');
SELECT pg_logdir_ls();
RESET ROLE;
DROP USER regress_user1;
-- no further tests for pg_logdir_ls() because it depends on the
-- server's logging setup
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