| Commit message (Collapse) | Author | Age | Files | Lines |
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"git for-each-ref --no-sort" still sorted the refs alphabetically
which paid non-trivial cost. It has been redefined to show output
in an unspecified order, to allow certain optimizations to take
advantage of.
* vd/for-each-ref-unsorted-optimization:
t/perf: add perf tests for for-each-ref
ref-filter.c: use peeled tag for '*' format fields
for-each-ref: clean up documentation of --format
ref-filter.c: filter & format refs in the same callback
ref-filter.c: refactor to create common helper functions
ref-filter.c: rename 'ref_filter_handler()' to 'filter_one()'
ref-filter.h: add functions for filter/format & format-only
ref-filter.h: move contains caches into filter
ref-filter.h: add max_count and omit_empty to ref_format
ref-filter.c: really don't sort when using --no-sort
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Add performance tests for 'for-each-ref'. The tests exercise different
combinations of filters/formats/options, as well as the overall performance
of 'git for-each-ref | git cat-file --batch-check' to demonstrate the
performance difference vs. 'git for-each-ref' with "%(*fieldname)" format
specifiers.
All tests are run against a repository with 40k loose refs - 10k commits,
each having a unique:
- branch
- custom ref (refs/custom/special_*)
- annotated tag pointing at the commit
- annotated tag pointing at the other annotated tag (i.e., a nested tag)
After those tests are finished, the refs are packed with 'pack-refs --all'
and the same tests are rerun.
Signed-off-by: Victoria Dye <vdye@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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In most builtins ('rev-parse <revision>^{}', 'show-ref --dereference'),
"dereferencing" a tag refers to a recursive peel of the tag object. Unlike
these cases, the dereferencing prefix ('*') in 'for-each-ref' format
specifiers triggers only a single, non-recursive dereference of a given tag
object. For most annotated tags, a single dereference is all that is needed
to access the tag's associated commit or tree; "recursive" and
"non-recursive" dereferencing are functionally equivalent in these cases.
However, nested tags (annotated tags whose target is another annotated tag)
dereferenced once return another tag, where a recursive dereference would
return the commit or tree.
Currently, if a user wants to filter & format refs and include information
about a recursively-dereferenced tag, they can do so with something like
'cat-file --batch-check':
git for-each-ref --format="%(objectname)^{} %(refname)" <pattern> |
git cat-file --batch-check="%(objectname) %(rest)"
But the combination of commands is inefficient. So, to improve the
performance of this use case and align the defererencing behavior of
'for-each-ref' with that of other commands, update the ref formatting code
to use the peeled tag (from 'peel_iterated_oid()') to populate '*' fields
rather than the tag's immediate target object (from 'get_tagged_oid()').
Additionally, add a test to 't6300-for-each-ref' to verify new nested tag
behavior and update 't6302-for-each-ref-filter.sh' to print the correct
value for nested dereferenced fields.
Signed-off-by: Victoria Dye <vdye@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When '--no-sort' is passed to 'for-each-ref', 'tag', and 'branch', the
printed refs are still sorted by ascending refname. Change the handling of
sort options in these commands so that '--no-sort' to truly disables
sorting.
'--no-sort' does not disable sorting in these commands is because their
option parsing does not distinguish between "the absence of '--sort'"
(and/or values for tag.sort & branch.sort) and '--no-sort'. Both result in
an empty 'sorting_options' string list, which is parsed by
'ref_sorting_options()' to create the 'struct ref_sorting *' for the
command. If the string list is empty, 'ref_sorting_options()' interprets
that as "the absence of '--sort'" and returns the default ref sorting
structure (equivalent to "refname" sort).
To handle '--no-sort' properly while preserving the "refname" sort in the
"absence of --sort'" case, first explicitly add "refname" to the string list
*before* parsing options. This alone doesn't actually change any behavior,
since 'compare_refs()' already falls back on comparing refnames if two refs
are equal w.r.t all other sort keys.
Now that the string list is populated by default, '--no-sort' is the only
way to empty the 'sorting_options' string list. Update
'ref_sorting_options()' to return a NULL 'struct ref_sorting *' if the
string list is empty, and add a condition to 'ref_array_sort()' to skip the
sort altogether if the sort structure is NULL. Note that other functions
using 'struct ref_sorting *' do not need any changes because they already
ignore NULL values.
Finally, remove the condition around sorting in 'ls-remote', since it's no
longer necessary. Unlike 'for-each-ref' et. al., it does *not* do any
sorting by default. This default is preserved by simply leaving its sort key
string list empty before parsing options; if no additional sort keys are
set, 'struct ref_sorting *' is NULL and sorting is skipped.
Signed-off-by: Victoria Dye <vdye@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Test and shell scripts clean-up.
* ps/ban-a-or-o-operator-with-test:
Makefile: stop using `test -o` when unlinking duplicate executables
contrib/subtree: convert subtree type check to use case statement
contrib/subtree: stop using `-o` to test for number of args
global: convert trivial usages of `test <expr> -a/-o <expr>`
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Our coding guidelines say to not use `test` with `-a` and `-o` because
it can easily lead to bugs. Convert trivial cases where we still use
these to instead instead concatenate multiple invocations of `test` via
`&&` and `||`, respectively.
While not all of the converted instances can cause ambiguity, it is
worth getting rid of all of them regardless:
- It becomes easier to reason about the code as we do not have to
argue why one use of `-a`/`-o` is okay while another one isn't.
- We don't encourage people to use these expressions.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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"git format-patch --encode-email-headers" ignored the option when
preparing the cover letter, which has been corrected.
* ss/format-patch-use-encode-headers-for-cover-letter:
format-patch: fix ignored encode_email_headers for cover letter
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When writing the cover letter, the encode_email_headers option was
ignored. That is, UTF-8 subject lines and email addresses were
written out as-is, without any Q-encoding, even if
--encode-email-headers was passed on the command line.
This is due to encode_email_headers not being copied over from
struct rev_info to struct pretty_print_context. Fix that and add
a test.
Signed-off-by: Simon Ser <contact@emersion.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Update ref-related tests.
* ps/ref-tests-update:
t: mark several tests that assume the files backend with REFFILES
t7900: assert the absence of refs via git-for-each-ref(1)
t7300: assert exact states of repo
t4207: delete replace references via git-update-ref(1)
t1450: convert tests to remove worktrees via git-worktree(1)
t: convert tests to not access reflog via the filesystem
t: convert tests to not access symrefs via the filesystem
t: convert tests to not write references via the filesystem
t: allow skipping expected object ID in `ref-store update-ref`
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Add the REFFILES prerequisite to several tests that assume we're using
the files backend. There are various reasons why we cannot easily
convert those tests to be backend-independent, where the most common
one is that we have no way to write corrupt references into the refdb
via our tooling. We may at a later point in time grow the tooling to
make this possible, but for now we just mark these tests as requiring
the files backend.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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We're asserting that a prefetch of remotes via git-maintenance(1)
doesn't write any references in refs/remotes by validating that the
directory ".git/refs/remotes" is missing. This is quite roundabout: we
don't care about the directory existing, we care about the references
not existing, and the way these are stored is on the behest of the
reference database.
Convert the test to instead check via git-for-each-ref(1) whether any
remote reference exist.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Some of the tests in t7300 verify that git-clean(1) doesn't touch
repositories that are embedded into the main repository. This is done by
asserting a small set of substructures that are assumed to always exist,
like the "refs/", "objects/" or "HEAD". This has the downside that we
need to assume a specific repository structure that may be subject to
change when new backends for the refdb land. At the same time, we don't
thoroughly assert that git-clean(1) really didn't end up cleaning any
files in the repository either.
Convert the tests to instead assert that all files continue to exist
after git-clean(1) by comparing a file listing via find(1) before and
after executing clean. This makes our actual assertions stricter while
having to care less about the repository's actual on-disk format.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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In t4207 we set up a set of replace objects via git-replace(1). Because
these references should not be impacting subsequent tests we also set up
some cleanup logic that deletes the replacement references via a call to
`rm -rf`. This reaches into the internal implementation details of the
reference backend and will thus break when we grow an alternative refdb
implementation.
Refactor the tests to delete the replacement refs via Git commands so
that we become independent of the actual refdb that's in use. As we
don't have a nice way to delete all replacements or all references in a
certain namespace, we opt for a combination of git-for-each-ref(1) and
git-update-ref(1)'s `--stdin` mode.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Some of our tests in t1450 create worktrees and then corrupt them.
As it is impossible to delete such worktrees via a normal call to `git
worktree remove`, we instead opt to remove them manually by calling
rm(1) instead.
This is ultimately unnecessary though as we can use the `-f` switch to
remove the worktree. Let's convert the tests to do so such that we don't
have to reach into internal implementation details of worktrees.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Some of our tests reach directly into the filesystem in order to both
read or modify the reflog, which will break once we have a second
reference backend in our codebase that stores reflogs differently.
Refactor these tests to either use git-reflog(1) or the ref-store test
helper. Note that the refactoring to use git-reflog(1) also requires us
to adapt our expectations in some cases where we previously verified the
exact on-disk log entries. This seems like an acceptable tradeoff though
to ensure that different backends have the same user-visible behaviour
as any user would typically use git-reflog(1) anyway to access the logs.
Any backend-specific verification of the written on-disk format should
be implemented in a separate, backend-specific test.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Some of our tests access symbolic references via the filesystem
directly. While this works with the current files reference backend, it
this will break once we have a second reference backend in our codebase.
Refactor these tests to instead use git-symbolic-ref(1) or our
`ref-store` test tool. The latter is required in some cases where safety
checks of git-symbolic-ref(1) would otherwise reject writing a symbolic
reference.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Some of our tests manually create, update or delete references by
writing the respective new values into the filesystem directly. While
this works with the current files reference backend, this will break
once we have a second reference backend implementation in our codebase.
Refactor these tests to instead use git-update-ref(1) or our `ref-store`
test tool. The latter is required in some cases where safety checks of
git-update-ref(1) would otherwise reject a reference update.
While at it, refactor some of the tests to schedule the cleanup command
via `test_when_finished` before modifying the repository.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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We require the caller to pass both the old and new expected object ID to
our `test-tool ref-store update-ref` helper. When trying to update a
symbolic reference though it's impossible to specify the expected object
ID, which means that the test would instead have to force-update the
reference. This is currently impossible though.
Update the helper to optionally skip verification of the old object ID
in case the test passes in an empty old object ID as input.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* ps/show-ref:
t: use git-show-ref(1) to check for ref existence
builtin/show-ref: add new mode to check for reference existence
builtin/show-ref: explicitly spell out different modes in synopsis
builtin/show-ref: ensure mutual exclusiveness of subcommands
builtin/show-ref: refactor options for patterns subcommand
builtin/show-ref: stop using global vars for `show_one()`
builtin/show-ref: stop using global variable to count matches
builtin/show-ref: refactor `--exclude-existing` options
builtin/show-ref: fix dead code when passing patterns
builtin/show-ref: fix leaking string buffer
builtin/show-ref: split up different subcommands
builtin/show-ref: convert pattern to a local variable
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"git add" and "git stash" learned to support the ":(attr:...)"
magic pathspec.
* jw/git-add-attr-pathspec:
attr: enable attr pathspec magic for git-add and git-stash
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Allow users to limit or exclude files based on file attributes
during git-add and git-stash.
For example, the chromium project would like to use
$ git add . ':(exclude,attr:submodule)'
as submodules are managed by an external tool, forbidding end users
to record changes with "git add". Allowing "git add" to often
records changes that users do not want in their commits.
This commit does not change any attr magic implementation. It is
only adding attr as an allowed pathspec in git-add and git-stash,
which was previously blocked by GUARD_PATHSPEC and a pathspec mask
in parse_pathspec()).
However, we fix a bug in prefix_magic() where attr values were
unintentionally removed. This was triggerable when parse_pathspec()
is called with PATHSPEC_PREFIX_ORIGIN as a flag, which was the case
for git-stash (Bug originally filed here [*])
Furthermore, while other commands hit this code path it did not
result in unexpected behavior because this bug only impacts the
pathspec->items->original field which is NOT used to filter
paths. However, git-stash does use pathspec->items->original when
building args used to call other git commands. (See add_pathspecs()
usage and implementation in stash.c)
It is possible that when the attr pathspec feature was first added
in b0db704652 (pathspec: allow querying for attributes, 2017-03-13),
"PATHSPEC_ATTR" was just unintentionally left out of a few
GUARD_PATHSPEC() invocations.
Later, to get a more user-friendly error message when attr was used
with git-add, PATHSPEC_ATTR was added as a mask to git-add's
invocation of parse_pathspec() 84d938b732 (add: do not accept
pathspec magic 'attr', 2018-09-18). However, this user-friendly
error message was never added for git-stash.
[Reference]
* https://lore.kernel.org/git/CAMmZTi-0QKtj7Q=sbC5qhipGsQxJFOY-Qkk1jfkRYwfF5FcUVg@mail.gmail.com/)
Signed-off-by: Joanna Wang <jojwang@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Code clean-up for jk/chunk-bounds topic.
* jk/chunk-bounds-more:
commit-graph: mark chunk error messages for translation
commit-graph: drop verify_commit_graph_lite()
commit-graph: check order while reading fanout chunk
commit-graph: use fanout value for graph size
commit-graph: abort as soon as we see a bogus chunk
commit-graph: clarify missing-chunk error messages
commit-graph: drop redundant call to "lite" verification
midx: check consistency of fanout table
commit-graph: handle overflow in chunk_size checks
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We read the fanout chunk, storing a pointer to it, but only confirm that
the entries are monotonic in a final "lite" verification step. Let's
move that into the actual OIDF chunk callback, so that we can report
problems immediately (for all the reasons given in the previous
"commit-graph: abort as soon as we see a bogus chunk" commit).
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Commit-graph, midx, and pack idx files all have both a lookup table of
oids and an oid fanout table. In midx and pack idx files, we take the
final entry of the fanout table as the source of truth for the number of
entries, and then verify that the size of the lookup table matches that.
But for commit-graph files, we do the opposite: we use the size of the
lookup table as the source of truth, and then check the final fanout
entry against it.
As noted in 4169d89645 (commit-graph: check consistency of fanout
table, 2023-10-09), either is correct. But there are a few reasons to
prefer the fanout table as the source of truth:
1. The fanout entries are 32-bits on disk, and that defines the
maximum number of entries we can store. But since the size of the
lookup table is only bounded by the filesystem, it can be much
larger. And hence computing it as the commit-graph does means that
we may truncate the result when storing it in a uint32_t.
2. We read the fanout first, then the lookup table. If we're verifying
the chunks as we read them, then we'd want to take the fanout as
truth (we have nothing yet to check it against) and then we can
check that the lookup table matches what we already know.
3. It is pointlessly inconsistent with the midx and pack idx code.
Since the three have to do similar size and bounds checks, it is
easier to reason about all three if they use the same approach.
So this patch moves the assignment of g->num_commits to the fanout
parser, and then we can check the size of the lookup chunk as soon as we
try to load it.
There's already a test covering this situation, which munges the final
fanout entry to 2^32-1. In the current code we complain that it does not
agree with the table size. But now that we treat the munged value as the
source of truth, we'll complain that the lookup table is the wrong size
(again, either is correct). So we'll have to update the message we
expect (and likewise for an earlier test which does similar munging).
There's a similar test for this situation on the midx side, but rather
than making a very-large fanout value, it just truncates the lookup
table. We could do that here, too, but the very-large fanout value
actually shows an interesting corner case. On a 32-bit system,
multiplying to find the expected table size would cause an integer
overflow. Using st_mult() would detect that, but cause us to die()
rather than falling back to the non-graph code path. Checking the size
using division (as we do with existing chunk-size checks) avoids the
overflow entirely, and the test demonstrates this when run on a 32-bit
system.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When a required commit-graph chunk cannot be loaded, we leave its entry
in the struct NULL, and then later complain that it is missing. But
that's just one reason we might not have loaded it, as we also do some
data quality checks.
Let's switch these messages to say "missing or corrupted", which is
exactly what the midx code says for the same cases. Likewise, we'll use
the same phrasing and capitalization as those for consistency. And while
we're here, we can mark them for translation (just like the midx ones).
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The commit-graph, midx, and pack idx on-disk formats all have oid fanout
tables which are fed to bsearch_hash(). If these tables do not increase
monotonically, then the binary search may not only produce bogus values,
it may cause out of bounds reads.
We fixed this for commit graphs in 4169d89645 (commit-graph: check
consistency of fanout table, 2023-10-09). That commit argued that we did
not need to do the same for midx and pack idx files, because they
already did this check. However, that is wrong. We _do_ check the fanout
table for pack idx files when we load them, but we only do so for midx
files when running "git multi-pack-index verify". So it is possible to
get an out-of-bounds read by running a normal command with a specially
crafted midx file.
Let's fix this using the same solution (and roughly the same test) we
did for the commit-graph in 4169d89645. This replaces the same check
from "multi-pack-index verify", because verify uses the same read
routines, we'd bail on reading the midx much sooner now. So let's make
sure to copy its verbose error message.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Add support for GitLab CI.
* ps/ci-gitlab:
ci: add support for GitLab CI
ci: install test dependencies for linux-musl
ci: squelch warnings when testing with unusable Git repo
ci: unify setup of some environment variables
ci: split out logic to set up failed test artifacts
ci: group installation of Docker dependencies
ci: make grouping setup more generic
ci: reorder definitions for grouping functions
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The linux-musl CI job executes tests on Alpine Linux, which is based on
musl libc instead of glibc. We're missing some test dependencies though,
which causes us to skip a subset of tests.
Install these test dependencies to increase our test coverage on this
platform. There are still some missing test dependecies, but these do
not have a corresponding package in the Alpine repositories:
- p4 and p4d, both parts of the Perforce version control system.
- cvsps, which generates patch sets for CVS.
- Subversion and the SVN::Core Perl library, the latter of which is
not available in the Alpine repositories. While the tool itself is
available, all Subversion-related tests are skipped without the
SVN::Core Perl library anyway.
The Apache2-based tests require a bit more care though. For one, the
module path is different on Alpine Linux, which requires us to add it to
the list of known module paths to detect it. But second, the WebDAV
module on Alpine Linux is broken because it does not bundle the default
database backend [1]. We thus need to skip the WebDAV-based tests on
Alpine Linux for now.
[1]: https://gitlab.alpinelinux.org/alpine/aports/-/issues/13112
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Update the base topic to work with CMake builds.
* js/doc-unit-tests-with-cmake:
cmake: handle also unit tests
cmake: use test names instead of full paths
cmake: fix typo in variable name
artifacts-tar: when including `.dll` files, don't forget the unit-tests
unit-tests: do show relative file paths
unit-tests: do not mistake `.pdb` files for being executable
cmake: also build unit tests
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Visual C interpolates `__FILE__` with the absolute _Windows_ path of
the source file. GCC interpolates it with the relative path, and the
tests even verify that.
So let's make sure that the unit tests only emit such paths.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When building the unit tests via CMake, the `.pdb` files are built.
Those are, essentially, files containing the debug information
separately from the executables.
Let's not confuse them with the executables we actually want to run.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Process to add some form of low-level unit tests has started.
* js/doc-unit-tests:
ci: run unit tests in CI
unit tests: add TAP unit test framework
unit tests: add a project plan document
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This patch contains an implementation for writing unit tests with TAP
output. Each test is a function that contains one or more checks. The
test is run with the TEST() macro and if any of the checks fail then the
test will fail. A complete program that tests STRBUF_INIT would look
like
#include "test-lib.h"
#include "strbuf.h"
static void t_static_init(void)
{
struct strbuf buf = STRBUF_INIT;
check_uint(buf.len, ==, 0);
check_uint(buf.alloc, ==, 0);
check_char(buf.buf[0], ==, '\0');
}
int main(void)
{
TEST(t_static_init(), "static initialization works);
return test_done();
}
The output of this program would be
ok 1 - static initialization works
1..1
If any of the checks in a test fail then they print a diagnostic message
to aid debugging and the test will be reported as failing. For example a
failing integer check would look like
# check "x >= 3" failed at my-test.c:102
# left: 2
# right: 3
not ok 1 - x is greater than or equal to three
There are a number of check functions implemented so far. check() checks
a boolean condition, check_int(), check_uint() and check_char() take two
values to compare and a comparison operator. check_str() will check if
two strings are equal. Custom checks are simple to implement as shown in
the comments above test_assert() in test-lib.h.
Tests can be skipped with test_skip() which can be supplied with a
reason for skipping which it will print. Tests can print diagnostic
messages with test_msg(). Checks that are known to fail can be wrapped
in TEST_TODO().
There are a couple of example test programs included in this
patch. t-basic.c implements some self-tests and demonstrates the
diagnostic output for failing test. The output of this program is
checked by t0080-unit-test-output.sh. t-strbuf.c shows some example
unit tests for strbuf.c
The unit tests will be built as part of the default "make all" target,
to avoid bitrot. If you wish to build just the unit tests, you can run
"make build-unit-tests". To run the tests, you can use "make unit-tests"
or run the test binaries directly, as in "./t/unit-tests/bin/t-strbuf".
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Josh Steadmon <steadmon@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Hooks executed by Subversion are spawned with an empty environment. By
default, not even variables like PATH will be propagated to them. In
order to ensure that we're still able to find required executables, we
thus write the current PATH variable into the hook script itself and
then re-export it in t9164.
This happens too late in the script though, as we already tried to
execute the basename(1) utility before exporting the PATH variable. This
tends to work on most platforms as the fallback value of PATH for Bash
(see `getconf PATH`) is likely to contain this binary. But on more
exotic platforms like NixOS this is not the case, and thus the test
fails.
While we could work around this issue by simply setting PATH earlier, it
feels fragile to inject a user-controlled value into the script and have
the shell interpret it. Instead, we can refactor the hook setup to write
a `hooks-env` file that configures PATH for us. Like this, Subversion
will know to set up the environment as expected for all hooks.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When setting up httpd for our tests, we also install a passwd and
proxy-passwd file that contain the test user's credentials. These
credentials currently use crypt(3) as the password encryption schema.
This schema can be considered deprecated nowadays as it is not safe
anymore. Quoting Apache httpd's documentation [1]:
> Unix only. Uses the traditional Unix crypt(3) function with a
> randomly-generated 32-bit salt (only 12 bits used) and the first 8
> characters of the password. Insecure.
This is starting to cause issues in modern Linux distributions. glibc
has deprecated its libcrypt library that used to provide crypt(3) in
favor of the libxcrypt library. This newer replacement provides a
compile time switch to disable insecure password encryption schemata,
which causes crypt(3) to always return `EINVAL`. The end result is that
httpd tests that exercise authentication will fail on distros that use
libxcrypt without these insecure encryption schematas.
Regenerate the passwd files to instead use the default password
encryption schema, which is md5. While it feels kind of funny that an
MD5-based encryption schema should be more secure than anything else, it
is the current default and supported by all platforms. Furthermore, it
really doesn't matter all that much given that these files are only used
for testing purposes anyway.
[1]: https://httpd.apache.org/docs/2.4/misc/password_encryptions.html
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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In order to set up the Apache httpd server, we need to locate both the
httpd binary and its default module path. This is done with a hardcoded
list of locations that we scan. While this works okayish with distros
that more-or-less follow the Filesystem Hierarchy Standard, it falls
apart on others like NixOS that don't.
While it is possible to specify these paths via `LIB_HTTPD_PATH` and
`LIB_HTTPD_MODULE_PATH`, it is not a nice experience for the developer
to figure out how to set those up. And in fact we can do better by
dynamically detecting both httpd and its module path at runtime:
- The httpd binary can be located via PATH.
- The module directory can (in many cases) be derived via the
`HTTPD_ROOT` compile-time variable.
Amend the code to do so.
Note that the new runtime-detected paths will only be used as a fallback
in case none of the hardcoded paths are usable. For the PATH lookup this
is because httpd is typically installed into "/usr/sbin", which is often
not included in the user's PATH variable. And the module path detection
relies on a configured httpd installation and may thus not work in all
cases, either.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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"git rev-list --unpacked --objects" failed to exclude packed
non-commit objects, which has been corrected.
* tb/rev-list-unpacked-fix:
pack-bitmap: drop --unpacked non-commit objects from results
list-objects: drop --unpacked non-commit objects from results
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When performing revision queries with `--objects` and
`--use-bitmap-index`, the output may incorrectly contain objects which
are packed, even when the `--unpacked` option is given. This affects
traversals, but also other querying operations, like `--count`,
`--disk-usage`, etc.
Like in the previous commit, the fix is to exclude those objects from
the result set before they are shown to the user (or, in this case,
before the bitmap containing the result of the traversal is enumerated
and its objects listed).
This is performed by a new function in pack-bitmap.c, called
`filter_packed_objects_from_bitmap()`. Note that we do not have to
inspect individual bits in the result bitmap, since we know that the
first N (where N is the number of objects in the bitmap's pack/MIDX)
bits correspond to objects which packed by definition.
In other words, for an object to have a bitmap position (not in the
extended index), it must appear in either the bitmap's pack or one of
the packs in its MIDX.
This presents an appealing optimization to us, which is that we can
simply memset() the corresponding number of `eword_t`'s to zero,
provided that we handle any objects which spill into the next word (but
don't occupy all 64 bits of the word itself).
We only have to handle objects in the bitmap's extended index. These
objects may (or may not) appear in one or more pack(s). Since these
objects are known to not appear in either the bitmap's MIDX or pack,
they may be stored as loose, appear in other pack(s), or both.
Before returning a bitmap containing the result of the traversal back to
the caller, drop any bits from the extended index which appear in one or
more packs. This implements the correct behavior for rev-list operations
which use the bitmap index to compute their result.
Co-authored-by: Jeff King <peff@peff.net>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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In git-rev-list(1), we describe the `--unpacked` option as:
Only useful with `--objects`; print the object IDs that are not in
packs.
This is true of commits, which we discard via get_commit_action(), but
not of the objects they reach. So if we ask for an --objects traversal
with --unpacked, we may get arbitrarily many objects which are indeed
packed.
I am nearly certain this behavior dates back to the introduction of
`--unpacked` via 12d2a18780 ("git rev-list --unpacked" shows only
unpacked commits, 2005-07-03), but I couldn't get that revision of Git
to compile for me. At least as early as v2.0.0 this has been subtly
broken:
$ git.compile --version
git version 2.0.0
$ git.compile rev-list --objects --all --unpacked
72791fe96c93f9ec5c311b8bc966ab349b3b5bbe
05713d991c18bbeef7e154f99660005311b5004d v1.0
153ed8b7719c6f5a68ce7ffc43133e95a6ac0fdb
8e4020bb5a8d8c873b25de15933e75cc0fc275df one
9200b628cf9dc883a85a7abc8d6e6730baee589c two
3e6b46e1b7e3b91acce99f6a823104c28aae0b58 unpacked.t
There, only the first, third, and sixth entries are loose, with the
remaining set of objects belonging to at least one pack.
The implications for this are relatively benign: bare 'git repack'
invocations which invoke pack-objects with --unpacked are impacted, and
at worst we'll store a few extra objects that should have been excluded.
Arguably changing this behavior is a backwards-incompatible change,
since it alters the set of objects emitted from rev-list queries with
`--objects` and `--unpacked`. But I argue that this change is still
sensible, since the existing implementation deviates from
clearly-written documentation.
The fix here is straightforward: avoid showing any non-commit objects
which are contained in packs by discarding them within list-objects.c,
before they are shown to the user. Note that similar treatment for
`list-objects.c::show_commit()` is not needed, since that case is
already handled by `revision.c::get_commit_action()`.
Co-authored-by: Jeff King <peff@peff.net>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Leakfix.
* ps/leakfixes:
setup: fix leaking repository format
setup: refactor `upgrade_repository_format()` to have common exit
shallow: fix memory leak when registering shallow roots
test-bloom: stop setting up Git directory twice
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When registering shallow roots, we unset the list of parents of the
to-be-registered commit if it's already been parsed. This causes us to
leak memory though because we never free this list. Fix this.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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We're setting up the Git directory twice in the `test-tool bloom`
helper, once at the beginning of `cmd_bloom()` and once in the local
subcommand implementation `get_bloom_filter_for_commit()`. This can lead
to memory leaks as we'll overwrite variables of `the_repository` with
newly allocated data structures. On top of that it's simply unnecessary.
Fix this by only setting up the Git directory once.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Leakfix.
* jk/decoration-and-other-leak-fixes:
daemon: free listen_addr before returning
revision: clear decoration structs during release_revisions()
decorate: add clear_decoration() function
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Code clean-up.
* ob/t3404-typofix:
t3404-rebase-interactive.sh: fix typos in title of a rewording test
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Fix-up for a topic that already has graduated.
* bc/more-git-var:
var: avoid a segmentation fault when `HOME` is unset
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Test clean-up.
* ch/t6300-verify-commit-test-cleanup:
t/t6300: drop magic filtering
t/lib-gpg: forcibly run a trustdb update
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Test style fix.
* ob/t9001-indent-fix:
t9001: fix indentation in test_no_confirm()
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UBSAN options were not propagated through the test framework to git
run via the httpd, unlike ASAN options, which has been corrected.
* jk/test-pass-ubsan-options-to-http-test:
test-lib: set UBSAN_OPTIONS to match ASan
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"git diff --cached" codepath did not fill the necessary stat
information for a file when fsmonitor knows it is clean and ended
up behaving as if it is not clean, which has been corrected.
* js/diff-cached-fsmonitor-fix:
diff-lib: fix check_removed when fsmonitor is on
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"git diff --no-index -R <(one) <(two)" did not work correctly,
which has been corrected.
* pw/diff-no-index-from-named-pipes:
diff --no-index: fix -R with stdin
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