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be753639d3
Attempting to use this function with a raw page not coming from a GiST
index would cause a crash, as it was missing the same sanity checks as
gist_page_items_bytea(). This slightly refactors the code so as all the
basic validation checks for GiST pages are done in a single routine,
in the same fashion as the pageinspect functions for hash and BRIN.
This fixes an issue similar to 076f4d9. A test is added to stress for
this case. While on it, I have added a similar test for
brin_page_items() with a combination make of a valid GiST index and a
raw btree page. This one was already protected, but it was not tested.
Reported-by: Egor Chindyaskin
Author: Dmitry Koval
Discussion: https://postgr.es/m/17815-fc4a2d3b74705703@postgresql.org
Backpatch-through: 14
40 lines
1.5 KiB
SQL
40 lines
1.5 KiB
SQL
CREATE TABLE test1 (a int, b text);
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INSERT INTO test1 VALUES (1, 'one');
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CREATE INDEX test1_a_idx ON test1 USING brin (a);
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SELECT brin_page_type(get_raw_page('test1_a_idx', 0));
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SELECT brin_page_type(get_raw_page('test1_a_idx', 1));
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SELECT brin_page_type(get_raw_page('test1_a_idx', 2));
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SELECT * FROM brin_metapage_info(get_raw_page('test1_a_idx', 0));
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SELECT * FROM brin_metapage_info(get_raw_page('test1_a_idx', 1));
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SELECT * FROM brin_revmap_data(get_raw_page('test1_a_idx', 0)) LIMIT 5;
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SELECT * FROM brin_revmap_data(get_raw_page('test1_a_idx', 1)) LIMIT 5;
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SELECT * FROM brin_page_items(get_raw_page('test1_a_idx', 2), 'test1_a_idx')
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ORDER BY blknum, attnum LIMIT 5;
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-- Mask DETAIL messages as these are not portable across architectures.
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\set VERBOSITY terse
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-- Failures for non-BRIN index.
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CREATE INDEX test1_a_btree ON test1 (a);
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SELECT brin_page_items(get_raw_page('test1_a_btree', 0), 'test1_a_btree');
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SELECT brin_page_items(get_raw_page('test1_a_btree', 0), 'test1_a_idx');
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-- Invalid special area size
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SELECT brin_page_type(get_raw_page('test1', 0));
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SELECT * FROM brin_metapage_info(get_raw_page('test1', 0));
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SELECT * FROM brin_revmap_data(get_raw_page('test1', 0));
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\set VERBOSITY default
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-- Tests with all-zero pages.
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SHOW block_size \gset
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SELECT brin_page_type(decode(repeat('00', :block_size), 'hex'));
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SELECT brin_page_items(decode(repeat('00', :block_size), 'hex'), 'test1_a_idx');
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SELECT brin_metapage_info(decode(repeat('00', :block_size), 'hex'));
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SELECT brin_revmap_data(decode(repeat('00', :block_size), 'hex'));
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DROP TABLE test1;
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