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git/t/t0004-unwritable.sh

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write-tree: properly detect failure to write tree objects Tomasz Fortuna reported that "git commit" does not error out properly when it cannot write tree objects out. "git write-tree" shares the same issue, as the failure to notice the error is deep in the logic to write tree objects out recursively. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-04-23 20:47:17 +04:00
#!/bin/sh
test_description='detect unwritable repository and fail correctly'
tests: add a test mode for SANITIZE=leak, run it in CI While git can be compiled with SANITIZE=leak, we have not run regression tests under that mode. Memory leaks have only been fixed as one-offs without structured regression testing. This change adds CI testing for it. We'll now build and small set of whitelisted t00*.sh tests under Linux with a new job called "linux-leaks". The CI target uses a new GIT_TEST_PASSING_SANITIZE_LEAK=true test mode. When running in that mode, we'll assert that we were compiled with SANITIZE=leak. We'll then skip all tests, except those that we've opted-in by setting "TEST_PASSES_SANITIZE_LEAK=true". A test setting "TEST_PASSES_SANITIZE_LEAK=true" setting can in turn make use of the "SANITIZE_LEAK" prerequisite, should they wish to selectively skip tests even under "GIT_TEST_PASSING_SANITIZE_LEAK=true". In the preceding commit we started doing this in "t0004-unwritable.sh" under SANITIZE=leak, now it'll combine nicely with "GIT_TEST_PASSING_SANITIZE_LEAK=true". This is how tests that don't set "TEST_PASSES_SANITIZE_LEAK=true" will be skipped under GIT_TEST_PASSING_SANITIZE_LEAK=true: $ GIT_TEST_PASSING_SANITIZE_LEAK=true ./t0001-init.sh 1..0 # SKIP skip all tests in t0001 under SANITIZE=leak, TEST_PASSES_SANITIZE_LEAK not set The intent is to add more TEST_PASSES_SANITIZE_LEAK=true annotations as follow-up change, but let's start small to begin with. In ci/run-build-and-tests.sh we make use of the default "*" case to run "make test" without any GIT_TEST_* modes. SANITIZE=leak is known to fail in combination with GIT_TEST_SPLIT_INDEX=true in t0016-oidmap.sh, and we're likely to have other such failures in various GIT_TEST_* modes. Let's focus on getting the base tests passing, we can expand coverage to GIT_TEST_* modes later. It would also be possible to implement a more lightweight version of this by only relying on setting "LSAN_OPTIONS". See <YS9OT/pn5rRK9cGB@coredump.intra.peff.net>[1] and <YS9ZIDpANfsh7N+S@coredump.intra.peff.net>[2] for a discussion of that. I've opted for this approach of adding a GIT_TEST_* mode instead because it's consistent with how we handle other special test modes. Being able to add a "!SANITIZE_LEAK" prerequisite and calling "test_done" early if it isn't satisfied also means that we can more incrementally add regression tests without being forced to fix widespread and hard-to-fix leaks at the same time. We have tests that do simple checking of some tool we're interested in, but later on in the script might be stressing trace2, or common sources of leaks like "git log" in combination with the tool (e.g. the commit-graph tests). To be clear having a prerequisite could also be accomplished by using "LSAN_OPTIONS" directly. On the topic of "LSAN_OPTIONS": It would be nice to have a mode to aggregate all failures in our various scripts, see [2] for a start at doing that which sets "log_path" in "LSAN_OPTIONS". I've punted on that for now, it can be added later. As of writing this we've got major regressions between master..seen, i.e. the t000*.sh tests and more fixed since 31f9acf9ce2 (Merge branch 'ah/plugleaks', 2021-08-04) have regressed recently. See the discussion at <87czsv2idy.fsf@evledraar.gmail.com>[3] about the lack of this sort of test mode, and 0e5bba53af (add UNLEAK annotation for reducing leak false positives, 2017-09-08) for the initial addition of SANITIZE=leak. See also 09595ab381 (Merge branch 'jk/leak-checkers', 2017-09-19), 7782066f67 (Merge branch 'jk/apache-lsan', 2019-05-19) and the recent 936e58851a (Merge branch 'ah/plugleaks', 2021-05-07) for some of the past history of "one-off" SANITIZE=leak (and more) fixes. As noted in [5] we can't support this on OSX yet until Clang 14 is released, at that point we'll probably want to resurrect that "osx-leaks" job. 1. https://github.com/google/sanitizers/wiki/AddressSanitizerLeakSanitizer 2. https://lore.kernel.org/git/YS9OT%2Fpn5rRK9cGB@coredump.intra.peff.net/ 3. https://lore.kernel.org/git/87czsv2idy.fsf@evledraar.gmail.com/ 4. https://lore.kernel.org/git/YS9ZIDpANfsh7N+S@coredump.intra.peff.net/ 5. https://lore.kernel.org/git/20210916035603.76369-1-carenas@gmail.com/ Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Carlo Marcelo Arenas Belón <carenas@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-23 12:20:46 +03:00
TEST_PASSES_SANITIZE_LEAK=true
write-tree: properly detect failure to write tree objects Tomasz Fortuna reported that "git commit" does not error out properly when it cannot write tree objects out. "git write-tree" shares the same issue, as the failure to notice the error is deep in the logic to write tree objects out recursively. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-04-23 20:47:17 +04:00
. ./test-lib.sh
test_expect_success setup '
>file &&
git add file &&
t0004: fix timing bug The test created an initial commit, made .git/objects unwritable and then exercised various codepaths to create loose commit, tree and blob objects to make sure the commands notice failures from these attempts. However, the initial commit was not preceded with test_tick, which made its object name depend on the timestamp. The names of all the later tree and blob objects the test tried to create were static. If the initial commit's object name happened to begin with the same two hexdigits as the tree or blob objects the test later attempted to create, the fan-out directory in which these tree or blob would be created is already created when the initial commit was made, and the object creation succeeds, and commands being tested should not notice any failure --- in short, the test was bogus. This makes the fan-out directories also unwritable, and adds test_tick before the commit object creation to make the test repeatable. The contents of the file to create a blob from "a" to "60" is to force the name of the blob object to begin with "1b", which shares the fan-out directory with the initial commit that is created with the test. This was useful when diagnosing the breakage of this test. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-07-12 15:15:56 +04:00
test_tick &&
write-tree: properly detect failure to write tree objects Tomasz Fortuna reported that "git commit" does not error out properly when it cannot write tree objects out. "git write-tree" shares the same issue, as the failure to notice the error is deep in the logic to write tree objects out recursively. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-04-23 20:47:17 +04:00
git commit -m initial &&
echo >file &&
git add file
'
tests: A SANITY test prereq for testing if we're root Some tests depend on not being able to write to files after chmod -w. This doesn't work when running the tests as root. Change test-lib.sh to test if this works, and if so it sets a new SANITY test prerequisite. The tests that use this previously failed when run under root. There was already a test for this in t3600-rm.sh, added by Junio C Hamano in 2283645 in 2006. That check now uses the new SANITY prerequisite. Some of this was resurrected from the "Tests in Cygwin" thread in May 2009: http://thread.gmane.org/gmane.comp.version-control.git/116729/focus=118385 Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-07 02:09:09 +04:00
test_expect_success POSIXPERM,SANITY 'write-tree should notice unwritable repository' '
t0004 (unwritable files): simplify error handling Instead of ... normal test script ... status=$? ... cleanup ... (exit $status) set up cleanup commands with test_when_finished. This makes the test script a little shorter, and more importantly, it ensures errors during cleanup are reported. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-09-07 05:50:17 +04:00
test_when_finished "chmod 775 .git/objects .git/objects/??" &&
chmod a-w .git/objects .git/objects/?? &&
unwritable tests: assert exact error output In preparation for fixing a regression where we started emitting some of these error messages twice, let's assert what the output from "git commit" and friends is now in the case of permission errors. As noted in [1] using test_expect_failure to mark up a TODO test has some unexpected edge cases, e.g. we don't want to break --run=3 by skipping the "test_lazy_prereq" here. This pattern allows us to test just the test_cmp (and the "cat", which shouldn't fail) with the added "test_expect_failure", we'll flip that to a "test_expect_success" in the next commit. 1. https://lore.kernel.org/git/87tuhmk19c.fsf@evledraar.gmail.com/T/#u Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-10-12 17:30:48 +03:00
test_must_fail git write-tree 2>out.write-tree
'
test_lazy_prereq WRITE_TREE_OUT 'test -e "$TRASH_DIRECTORY"/out.write-tree'
test_expect_success WRITE_TREE_OUT 'write-tree output on unwritable repository' '
cat >expect <<-\EOF &&
error: insufficient permission for adding an object to repository database .git/objects
fatal: git-write-tree: error building trees
EOF
test_cmp expect out.write-tree
write-tree: properly detect failure to write tree objects Tomasz Fortuna reported that "git commit" does not error out properly when it cannot write tree objects out. "git write-tree" shares the same issue, as the failure to notice the error is deep in the logic to write tree objects out recursively. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-04-23 20:47:17 +04:00
'
leak tests: don't skip some tests under SANITIZE=leak The '!SANITIZE_LEAK' prerequisite added in 956d2e4639b (tests: add a test mode for SANITIZE=leak, run it in CI, 2021-09-23) has been used in various tests to skip individual tests in otherwise leak-free tests. Let's change the cases that have become leak-free since then to run under SANITIZE=leak. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-07-28 02:13:40 +03:00
test_expect_success POSIXPERM,SANITY 'commit should notice unwritable repository' '
t0004 (unwritable files): simplify error handling Instead of ... normal test script ... status=$? ... cleanup ... (exit $status) set up cleanup commands with test_when_finished. This makes the test script a little shorter, and more importantly, it ensures errors during cleanup are reported. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-09-07 05:50:17 +04:00
test_when_finished "chmod 775 .git/objects .git/objects/??" &&
chmod a-w .git/objects .git/objects/?? &&
unwritable tests: assert exact error output In preparation for fixing a regression where we started emitting some of these error messages twice, let's assert what the output from "git commit" and friends is now in the case of permission errors. As noted in [1] using test_expect_failure to mark up a TODO test has some unexpected edge cases, e.g. we don't want to break --run=3 by skipping the "test_lazy_prereq" here. This pattern allows us to test just the test_cmp (and the "cat", which shouldn't fail) with the added "test_expect_failure", we'll flip that to a "test_expect_success" in the next commit. 1. https://lore.kernel.org/git/87tuhmk19c.fsf@evledraar.gmail.com/T/#u Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-10-12 17:30:48 +03:00
test_must_fail git commit -m second 2>out.commit
'
test_lazy_prereq COMMIT_OUT 'test -e "$TRASH_DIRECTORY"/out.commit'
commit: fix duplication regression in permission error output Fix a regression in the error output emitted when .git/objects can't be written to. Before 9c4d6c0297b (cache-tree: Write updated cache-tree after commit, 2014-07-13) we'd emit only one "insufficient permission" error, now we'll do so again. The cause is rather straightforward, we've got WRITE_TREE_SILENT for the use-case of wanting to prepare an index silently, quieting any permission etc. error output. Then when we attempt to update to that (possibly broken) index we'll run into the same errors again. But with 9c4d6c0297b the gap between the cache-tree API and the object store wasn't closed in terms of asking write_object_file() to be silent. I.e. post-9c4d6c0297b the first call is to prepare_index(), and after that we'll call prepare_to_commit(). We only want verbose error output from the latter. So let's add and use that facility with a corresponding HASH_SILENT flag, its only user is cache-tree.c's update_one(), which will set it if its "WRITE_TREE_SILENT" flag is set. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-10-12 17:30:49 +03:00
test_expect_success COMMIT_OUT 'commit output on unwritable repository' '
unwritable tests: assert exact error output In preparation for fixing a regression where we started emitting some of these error messages twice, let's assert what the output from "git commit" and friends is now in the case of permission errors. As noted in [1] using test_expect_failure to mark up a TODO test has some unexpected edge cases, e.g. we don't want to break --run=3 by skipping the "test_lazy_prereq" here. This pattern allows us to test just the test_cmp (and the "cat", which shouldn't fail) with the added "test_expect_failure", we'll flip that to a "test_expect_success" in the next commit. 1. https://lore.kernel.org/git/87tuhmk19c.fsf@evledraar.gmail.com/T/#u Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-10-12 17:30:48 +03:00
cat >expect <<-\EOF &&
error: insufficient permission for adding an object to repository database .git/objects
error: Error building trees
EOF
test_cmp expect out.commit
write-tree: properly detect failure to write tree objects Tomasz Fortuna reported that "git commit" does not error out properly when it cannot write tree objects out. "git write-tree" shares the same issue, as the failure to notice the error is deep in the logic to write tree objects out recursively. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-04-23 20:47:17 +04:00
'
tests: A SANITY test prereq for testing if we're root Some tests depend on not being able to write to files after chmod -w. This doesn't work when running the tests as root. Change test-lib.sh to test if this works, and if so it sets a new SANITY test prerequisite. The tests that use this previously failed when run under root. There was already a test for this in t3600-rm.sh, added by Junio C Hamano in 2283645 in 2006. That check now uses the new SANITY prerequisite. Some of this was resurrected from the "Tests in Cygwin" thread in May 2009: http://thread.gmane.org/gmane.comp.version-control.git/116729/focus=118385 Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-07 02:09:09 +04:00
test_expect_success POSIXPERM,SANITY 'update-index should notice unwritable repository' '
t0004 (unwritable files): simplify error handling Instead of ... normal test script ... status=$? ... cleanup ... (exit $status) set up cleanup commands with test_when_finished. This makes the test script a little shorter, and more importantly, it ensures errors during cleanup are reported. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-09-07 05:50:17 +04:00
test_when_finished "chmod 775 .git/objects .git/objects/??" &&
echo 6O >file &&
chmod a-w .git/objects .git/objects/?? &&
unwritable tests: assert exact error output In preparation for fixing a regression where we started emitting some of these error messages twice, let's assert what the output from "git commit" and friends is now in the case of permission errors. As noted in [1] using test_expect_failure to mark up a TODO test has some unexpected edge cases, e.g. we don't want to break --run=3 by skipping the "test_lazy_prereq" here. This pattern allows us to test just the test_cmp (and the "cat", which shouldn't fail) with the added "test_expect_failure", we'll flip that to a "test_expect_success" in the next commit. 1. https://lore.kernel.org/git/87tuhmk19c.fsf@evledraar.gmail.com/T/#u Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-10-12 17:30:48 +03:00
test_must_fail git update-index file 2>out.update-index
'
test_lazy_prereq UPDATE_INDEX_OUT 'test -e "$TRASH_DIRECTORY"/out.update-index'
test_expect_success UPDATE_INDEX_OUT 'update-index output on unwritable repository' '
cat >expect <<-\EOF &&
error: insufficient permission for adding an object to repository database .git/objects
error: file: failed to insert into database
fatal: Unable to process path file
EOF
test_cmp expect out.update-index
write-tree: properly detect failure to write tree objects Tomasz Fortuna reported that "git commit" does not error out properly when it cannot write tree objects out. "git write-tree" shares the same issue, as the failure to notice the error is deep in the logic to write tree objects out recursively. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-04-23 20:47:17 +04:00
'
tests: A SANITY test prereq for testing if we're root Some tests depend on not being able to write to files after chmod -w. This doesn't work when running the tests as root. Change test-lib.sh to test if this works, and if so it sets a new SANITY test prerequisite. The tests that use this previously failed when run under root. There was already a test for this in t3600-rm.sh, added by Junio C Hamano in 2283645 in 2006. That check now uses the new SANITY prerequisite. Some of this was resurrected from the "Tests in Cygwin" thread in May 2009: http://thread.gmane.org/gmane.comp.version-control.git/116729/focus=118385 Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-07 02:09:09 +04:00
test_expect_success POSIXPERM,SANITY 'add should notice unwritable repository' '
t0004 (unwritable files): simplify error handling Instead of ... normal test script ... status=$? ... cleanup ... (exit $status) set up cleanup commands with test_when_finished. This makes the test script a little shorter, and more importantly, it ensures errors during cleanup are reported. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-09-07 05:50:17 +04:00
test_when_finished "chmod 775 .git/objects .git/objects/??" &&
echo b >file &&
chmod a-w .git/objects .git/objects/?? &&
unwritable tests: assert exact error output In preparation for fixing a regression where we started emitting some of these error messages twice, let's assert what the output from "git commit" and friends is now in the case of permission errors. As noted in [1] using test_expect_failure to mark up a TODO test has some unexpected edge cases, e.g. we don't want to break --run=3 by skipping the "test_lazy_prereq" here. This pattern allows us to test just the test_cmp (and the "cat", which shouldn't fail) with the added "test_expect_failure", we'll flip that to a "test_expect_success" in the next commit. 1. https://lore.kernel.org/git/87tuhmk19c.fsf@evledraar.gmail.com/T/#u Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-10-12 17:30:48 +03:00
test_must_fail git add file 2>out.add
'
test_lazy_prereq ADD_OUT 'test -e "$TRASH_DIRECTORY"/out.add'
test_expect_success ADD_OUT 'add output on unwritable repository' '
cat >expect <<-\EOF &&
error: insufficient permission for adding an object to repository database .git/objects
error: file: failed to insert into database
error: unable to index file '\''file'\''
fatal: updating files failed
EOF
test_cmp expect out.add
write-tree: properly detect failure to write tree objects Tomasz Fortuna reported that "git commit" does not error out properly when it cannot write tree objects out. "git write-tree" shares the same issue, as the failure to notice the error is deep in the logic to write tree objects out recursively. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-04-23 20:47:17 +04:00
'
test_done