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2021-10-25Merge branch 'jt/no-abuse-alternate-odb-for-submodules'Libravatar Junio C Hamano1-3/+15
Follow through the work to use the repo interface to access submodule objects in-process, instead of abusing the alternate object database interface. * jt/no-abuse-alternate-odb-for-submodules: submodule: trace adding submodule ODB as alternate submodule: pass repo to check_has_commit() object-file: only register submodule ODB if needed merge-{ort,recursive}: remove add_submodule_odb() refs: peeling non-the_repository iterators is BUG refs: teach arbitrary repo support to iterators refs: plumb repo into ref stores
2021-10-13Merge branch 'en/removing-untracked-fixes'Libravatar Junio C Hamano1-0/+1
Various fixes in code paths that move untracked files away to make room. * en/removing-untracked-fixes: Documentation: call out commands that nuke untracked files/directories Comment important codepaths regarding nuking untracked files/dirs unpack-trees: avoid nuking untracked dir in way of locally deleted file unpack-trees: avoid nuking untracked dir in way of unmerged file Change unpack_trees' 'reset' flag into an enum Remove ignored files by default when they are in the way unpack-trees: make dir an internal-only struct unpack-trees: introduce preserve_ignored to unpack_trees_options read-tree, merge-recursive: overwrite ignored files by default checkout, read-tree: fix leak of unpack_trees_options.dir t2500: add various tests for nuking untracked files
2021-10-11Merge branch 'ab/designated-initializers'Libravatar Junio C Hamano1-3/+5
Code clean-up. * ab/designated-initializers: cbtree.h: define cb_init() in terms of CBTREE_INIT *.h: move some *_INIT to designated initializers *.h _INIT macros: don't specify fields equal to 0 *.[ch] *_INIT macros: use { 0 } for a "zero out" idiom submodule-config.h: remove unused SUBMODULE_INIT macro
2021-10-08submodule: trace adding submodule ODB as alternateLibravatar Jonathan Tan1-0/+2
Submodule ODBs are never added as alternates during the execution of the test suite, but there may be a rare interaction that the test suite does not have coverage of. Add a trace message when this happens, so that users who trace their commands can notice such occurrences. Signed-off-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-10-08submodule: pass repo to check_has_commit()Libravatar Jonathan Tan1-3/+13
Pass the repo explicitly when calling check_has_commit() to avoid relying on add_submodule_odb(). With this commit and the parent commit, the last remaining tests no longer rely on add_submodule_odb(), so mark these tests accordingly. Signed-off-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-10-06Merge branch 'jt/add-submodule-odb-clean-up'Libravatar Junio C Hamano1-19/+5
More code paths that use the hack to add submodule's object database to the set of alternate object store have been cleaned up. * jt/add-submodule-odb-clean-up: revision: remove "submodule" from opt struct repository: support unabsorbed in repo_submodule_init submodule: remove unnecessary unabsorbed fallback
2021-09-28Merge branch 'jk/ref-paranoia' into jt/no-abuse-alternate-odb-for-submodulesLibravatar Junio C Hamano1-22/+55
* jk/ref-paranoia: (71 commits) refs: drop "broken" flag from for_each_fullref_in() ref-filter: drop broken-ref code entirely ref-filter: stop setting FILTER_REFS_INCLUDE_BROKEN repack, prune: drop GIT_REF_PARANOIA settings refs: turn on GIT_REF_PARANOIA by default refs: omit dangling symrefs when using GIT_REF_PARANOIA refs: add DO_FOR_EACH_OMIT_DANGLING_SYMREFS flag refs-internal.h: reorganize DO_FOR_EACH_* flag documentation refs-internal.h: move DO_FOR_EACH_* flags next to each other t5312: be more assertive about command failure t5312: test non-destructive repack t5312: create bogus ref as necessary t5312: drop "verbose" helper t5600: provide detached HEAD for corruption failures t5516: don't use HEAD ref for invalid ref-deletion tests t7900: clean up some more broken refs The eighth batch t0000: avoid masking git exit value through pipes tree-diff: fix leak when not HAVE_ALLOCA_H pack-revindex.h: correct the time complexity descriptions ...
2021-09-27*.h: move some *_INIT to designated initializersLibravatar Ævar Arnfjörð Bjarmason1-3/+5
Move various *_INIT macros to use designated initializers. This helps readability. I've only picked those leftover macros that were not touched by another in-flight series of mine which changed others, but also how initialization was done. In the case of SUBMODULE_ALTERNATE_SETUP_INIT I've left an explicit initialization of "error_mode", even though SUBMODULE_ALTERNATE_ERROR_IGNORE itself is defined as "0". Let's not peek under the hood and assume that enum fields we know the value of will stay at "0". The change to "TESTSUITE_INIT" in "t/helper/test-run-command.c" was part of an earlier on-list version[1] of c90be786da9 (test-tool run-command: fix flip-flop init pattern, 2021-09-11). 1. https://lore.kernel.org/git/patch-1.1-0aa4523ab6e-20210909T130849Z-avarab@gmail.com/ Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-27Comment important codepaths regarding nuking untracked files/dirsLibravatar Elijah Newren1-0/+1
In the last few commits we focused on code in unpack-trees.c that mistakenly removed untracked files or directories. There may be more of those, but in this commit we change our focus: callers of toplevel commands that are expected to remove untracked files or directories. As noted previously, we have toplevel commands that are expected to delete untracked files such as 'read-tree --reset', 'reset --hard', and 'checkout --force'. However, that does not mean that other highlevel commands that happen to call these other commands thought about or conveyed to users the possibility that untracked files could be removed. Audit the code for such callsites, and add comments near existing callsites to mention whether these are safe or not. My auditing is somewhat incomplete, though; it skipped several cases: * git-rebase--preserve-merges.sh: is in the process of being deprecated/removed, so I won't leave a note that there are likely more bugs in that script. * contrib/git-new-workdir: why is the -f flag being used in a new empty directory?? It shouldn't hurt, but it seems useless. * git-p4.py: Don't see why -f is needed for a new dir (maybe it's not and is just superfluous), but I'm not at all familiar with the p4 stuff * git-archimport.perl: Don't care; arch is long since dead * git-cvs*.perl: Don't care; cvs is long since dead Also, the reset --hard in builtin/worktree.c looks safe, due to only running in an empty directory. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-23Merge branch 'jt/submodule-name-to-gitdir'Libravatar Junio C Hamano1-22/+55
Code refactoring. * jt/submodule-name-to-gitdir: submodule: extract path to submodule gitdir func
2021-09-22Merge branch 'jt/add-submodule-odb-clean-up' into ↵Libravatar Junio C Hamano1-19/+5
jt/no-abuse-alternate-odb-for-submodules * jt/add-submodule-odb-clean-up: revision: remove "submodule" from opt struct repository: support unabsorbed in repo_submodule_init submodule: remove unnecessary unabsorbed fallback
2021-09-20Merge branch 'ar/submodule-add-config'Libravatar Junio C Hamano1-0/+5
Large part of "git submodule add" gets rewritten in C. * ar/submodule-add-config: submodule--helper: introduce add-config subcommand
2021-09-20Merge branch 'dt/submodule-diff-fixes'Libravatar Junio C Hamano1-1/+13
"git diff --submodule=diff" showed failure from run_command() when trying to run diff inside a submodule, when the user manually removes the submodule directory. * dt/submodule-diff-fixes: diff --submodule=diff: don't print failure message twice diff --submodule=diff: do not fail on ever-initialied deleted submodules t4060: remove unused variable
2021-09-15submodule: extract path to submodule gitdir funcLibravatar Jonathan Tan1-22/+55
We currently store each submodule gitdir in ".git/modules/<name>", but this has problems with some submodule naming schemes, as described in a comment in submodule_name_to_gitdir() in this patch. Extract the determination of the location of a submodule's gitdir into its own function submodule_name_to_gitdir(). For now, the problem remains unsolved, but this puts us in a better position for finding a solution. This was motivated, at $DAYJOB, by a part of Android's repo hierarchy [1]. In particular, there is a repo "build", and several repos of the form "build/<name>". This is based on earlier work by Brandon Williams [2]. [1] https://android.googlesource.com/platform/ [2] https://lore.kernel.org/git/20180808223323.79989-2-bmwill@google.com/ Signed-off-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-09repository: support unabsorbed in repo_submodule_initLibravatar Jonathan Tan1-6/+3
In preparation for a subsequent commit that migrates code using add_submodule_odb() to repo_submodule_init(), teach repo_submodule_init() to support submodules with unabsorbed gitdirs. (See the documentation for "git submodule absorbgitdirs" for more information about absorbed and unabsorbed gitdirs.) Signed-off-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-09submodule: remove unnecessary unabsorbed fallbackLibravatar Jonathan Tan1-13/+2
In get_submodule_repo_for(), there is a fallback code path for the case in which a submodule has an unabsorbed gitdir. (See the documentation for "git submodule absorbgitdirs" for more information about absorbed and unabsorbed gitdirs.) However, this code path is unnecessary, because such submodules are already handled: when the fetch_task is created in fetch_task_create(), it will create its own struct submodule with a path and name, and repo_submodule_init() can handle such a struct. This fallback was introduced in 26f80ccfc1 ("submodule: migrate get_next_submodule to use repository structs", 2018-12-05). It was unnecessary even then, but perhaps it escaped notice because its parent commit d5498e0871 ("repository: repo_submodule_init to take a submodule struct", 2018-12-05) was the one that taught repo_submodule_init() to handle such created structs. Before, it took a path and always checked .gitmodules, so it truly would have failed if there were no entry in .gitmodules. (Note to reviewers: in 26f80ccfc1, the "own struct submodule" I mentioned is in get_next_submodule(), not fetch_task_create().) Signed-off-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-08grep: use submodule-ODB-as-alternate lazy-additionLibravatar Jonathan Tan1-0/+5
In the parent commit, Git was taught to add submodule ODBs as alternates lazily, but grep does not use this because it computes the path to add directly, not going through add_submodule_odb(). Add an equivalent to add_submodule_odb() that takes the exact ODB path and teach grep to use it. Signed-off-by: Jonathan Tan <jonathantanmy@google.com> Reviewed-by: Emily Shaffer <emilyshaffer@google.com> Reviewed-by: Matheus Tavares <matheus.bernardino@usp.br> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-09-08submodule: lazily add submodule ODBs as alternatesLibravatar Jonathan Tan1-1/+19
Teach Git to add submodule ODBs as alternates to the object store of the_repository only upon the first access of an object not in the_repository, and not when add_submodule_odb() is called. This provides a means of gradually migrating from accessing a submodule's object through alternates to accessing a submodule's object by explicitly passing its repository object. Any Git command can declare that it might access submodule objects by calling add_submodule_odb() (as they do now), but the submodule ODBs themselves will not be added until needed, so individual commands and/or combinations of arguments can be migrated one by one. [The advantage of explicit repository-object passing is code clarity (it is clear which repository an object read is from), performance (there is no need to linearly search through all submodule ODBs whenever an object is accessed from any repository, whether superproject or submodule), and the possibility of future features like partial clone submodules (which right now is not possible because if an object is missing, we do not know which repository to lazy-fetch into).] This commit also introduces an environment variable that a test may set to make the actual registration of alternates fatal, in order to demonstrate that its codepaths do not need this registration. Signed-off-by: Jonathan Tan <jonathantanmy@google.com> Reviewed-by: Emily Shaffer <emilyshaffer@google.com> Reviewed-by: Matheus Tavares <matheus.bernardino@usp.br> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-08-31diff --submodule=diff: don't print failure message twiceLibravatar David Turner1-1/+3
When we fail to start a diff command inside a submodule, immediately exit the routine rather than trying to finish the command and printing a second message. Signed-off-by: David Turner <dturner@twosigma.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-08-31diff --submodule=diff: do not fail on ever-initialied deleted submodulesLibravatar David Turner1-0/+10
If you have ever initialized a submodule, open_submodule will open it. If you then delete the submodule's worktree directory (but don't remove it from .gitmodules), git diff --submodule=diff would error out as it attempted to chdir into the now-deleted working tree directory. This only matters if the submodules git dir is absorbed. If not, then we no longer have anywhere to run the diff. But that case does not trigger this error, because in that case, open_submodule fails, so we don't resolve a left commit, so we exit early, which is the only thing we could do. If absorbed, then we can run the diff from the submodule's absorbed git dir (.git/modules/sm2). In practice, that's a bit more complicated, because `git diff` expects to be run from inside a working directory, not a git dir. So it looks in the config for core.worktree, and does chdir("../../../sm2"), which is the very dir that we're trying to avoid visiting because it's been deleted. We work around this by setting GIT_WORK_TREE (and GIT_DIR) to ".". It is little weird to set GIT_WORK_TREE to something that is not a working tree just to avoid an unnecessary chdir, but it works. Signed-off-by: David Turner <dturner@twosigma.com Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-08-10submodule--helper: introduce add-config subcommandLibravatar Atharva Raykar1-0/+5
Add a new "add-config" subcommand to `git submodule--helper` with the goal of converting part of the shell code in git-submodule.sh related to `git submodule add` into C code. This new subcommand sets the configuration variables of a newly added submodule, by registering the url in local git config, as well as the submodule name and path in the .gitmodules file. It also sets 'submodule.<name>.active' to "true" if the submodule path has not already been covered by any pathspec specified in 'submodule.active'. This is meant to be a faithful conversion from shell to C, although we add comments to areas that could be improved in future patches, after the conversion has settled. Signed-off-by: Atharva Raykar <raykar.ath@gmail.com> Mentored-by: Christian Couder <christian.couder@gmail.com> Mentored-by: Shourya Shukla <periperidip@gmail.com> Based-on-patch-by: Shourya Shukla <periperidip@gmail.com> Based-on-patch-by: Prathamesh Chavan <pc44800@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-06-28run-command: refactor subprocess env preparationLibravatar Jonathan Tan1-16/+2
submodule.c has functionality that prepares the environment for running a subprocess in a new repo. The lazy-fetching code (used in partial clones) will need this in a subsequent commit, so move it to a more central location. Signed-off-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> Reviewed-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-06-28submodule: refrain from filtering GIT_CONFIG_COUNTLibravatar Jonathan Tan1-1/+2
14111fc492 ("git: submodule honor -c credential.* from command line", 2016-03-01) taught Git to pass through the GIT_CONFIG_PARAMETERS environment variable when invoking a subprocess on behalf of a submodule. But when d8d77153ea ("config: allow specifying config entries via envvar pairs", 2021-01-15) introduced support for GIT_CONFIG_COUNT (and its associated GIT_CONFIG_KEY_? and GIT_CONFIG_VALUE_?), the subprocess mechanism wasn't updated to also pass through these variables. Since they are conceptually the same (d8d77153ea was written to address a shortcoming of GIT_CONFIG_PARAMETERS), update the submodule subprocess mechanism to also pass through GIT_CONFIG_COUNT. Signed-off-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-05-10Merge branch 'bc/hash-transition-interop-part-1'Libravatar Junio C Hamano1-12/+14
SHA-256 transition. * bc/hash-transition-interop-part-1: hex: print objects using the hash algorithm member hex: default to the_hash_algo on zero algorithm value builtin/pack-objects: avoid using struct object_id for pack hash commit-graph: don't store file hashes as struct object_id builtin/show-index: set the algorithm for object IDs hash: provide per-algorithm null OIDs hash: set, copy, and use algo field in struct object_id builtin/pack-redundant: avoid casting buffers to struct object_id Use the final_oid_fn to finalize hashing of object IDs hash: add a function to finalize object IDs http-push: set algorithm when reading object ID Always use oidread to read into struct object_id hash: add an algo member to struct object_id
2021-04-27hash: provide per-algorithm null OIDsLibravatar brian m. carlson1-12/+14
Up until recently, object IDs did not have an algorithm member, only a hash. Consequently, it was possible to share one null (all-zeros) object ID among all hash algorithms. Now that we're going to be handling objects from multiple hash algorithms, it's important to make sure that all object IDs have a correct algorithm field. Introduce a per-algorithm null OID, and add it to struct hash_algo. Introduce a wrapper function as well, and use it everywhere we used to use the null_oid constant. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-04-14*: remove 'const' qualifier for struct index_stateLibravatar Derrick Stolee1-3/+3
Several methods specify that they take a 'struct index_state' pointer with the 'const' qualifier because they intend to only query the data, not change it. However, we will be introducing a step very low in the method stack that might modify a sparse-index to become a full index in the case that our queries venture inside a sparse-directory entry. This change only removes the 'const' qualifiers that are necessary for the following change which will actually modify the implementation of index_name_stage_pos(). Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Reviewed-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-01-25Merge branch 'sj/untracked-files-in-submodule-directory-is-not-dirty'Libravatar Junio C Hamano1-0/+1
"git diff" showed a submodule working tree with untracked cruft as "Submodule commit <objectname>-dirty", but a natural expectation is that the "-dirty" indicator would align with "git describe --dirty", which does not consider having untracked files in the working tree as source of dirtiness. The inconsistency has been fixed. * sj/untracked-files-in-submodule-directory-is-not-dirty: diff: do not show submodule with untracked files as "-dirty"
2020-12-09submodules: fix of regression on fetching of non-init subsub-repoLibravatar Peter Kaestle1-1/+6
A regression has been introduced by a62387b (submodule.c: fetch in submodules git directory instead of in worktree, 2018-11-28). The scenario in which it triggers is when one has a repository with a submodule inside a submodule like this: superproject/middle_repo/inner_repo Person A and B have both a clone of it, while Person B is not working with the inner_repo and thus does not have it initialized in his working copy. Now person A introduces a change to the inner_repo and propagates it through the middle_repo and the superproject. Once person A pushed the changes and person B wants to fetch them using "git fetch" at the superproject level, B's git call will return with error saying: Could not access submodule 'inner_repo' Errors during submodule fetch: middle_repo Expectation is that in this case the inner submodule will be recognized as uninitialized submodule and skipped by the git fetch command. This used to work correctly before 'a62387b (submodule.c: fetch in submodules git directory instead of in worktree, 2018-11-28)'. Starting with a62387b the code wants to evaluate "is_empty_dir()" inside .git/modules for a directory only existing in the worktree, delivering then of course wrong return value. This patch ensures is_empty_dir() is getting the correct path of the uninitialized submodule by concatenation of the actual worktree and the name of the uninitialized submodule. The first attempt to fix this regression, in 1b7ac4e6d4 (submodules: fix of regression on fetching of non-init subsub-repo, 2020-11-12), by simply reverting a62387b, resulted in an infinite loop of submodule fetches in the simpler case of a recursive fetch of a superproject with uninitialized submodules, and so this commit was reverted in 7091499bc0 (Revert "submodules: fix of regression on fetching of non-init subsub-repo", 2020-12-02). To prevent future breakages, also add a regression test for this scenario. Signed-off-by: Peter Kaestle <peter.kaestle@nokia.com> CC: Junio C Hamano <gitster@pobox.com> CC: Philippe Blain <levraiphilippeblain@gmail.com> CC: Ralf Thielow <ralf.thielow@gmail.com> CC: Eric Sunshine <sunshine@sunshineco.us> Reviewed-by: Philippe Blain <levraiphilippeblain@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-12-08diff: do not show submodule with untracked files as "-dirty"Libravatar Sangeeta Jain1-0/+1
Git diff reports a submodule directory as -dirty even when there are only untracked files in the submodule directory. This is inconsistent with what `git describe --dirty` says when run in the submodule directory in that state. Make `--ignore-submodules=untracked` the default for `git diff` when there is no configuration variable or command line option, so that the command would not give '-dirty' suffix to a submodule whose working tree has untracked files, to make it consistent with `git describe --dirty` that is run in the submodule working tree. And also make `--ignore-submodules=none` the default for `git status` so that the user doesn't end up deleting a submodule that has uncommitted (untracked) files. Signed-off-by: Sangeeta Jain <sangunb09@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-05Merge branch 'so/combine-diff-simplify'Libravatar Junio C Hamano1-1/+2
Code simplification. * so/combine-diff-simplify: diff: get rid of redundant 'dense' argument
2020-09-29diff: get rid of redundant 'dense' argumentLibravatar Sergey Organov1-1/+2
Get rid of 'dense' argument that is redundant for every function that has 'struct rev_info *rev' argument as well, as the value of 'dense' passed is always taken from 'rev->dense_combined_merges' field. The only place where this was not the case is in 'submodule.c' where 'diff_tree_combined_merge()' was called with '1' for 'dense' argument. However, at that call the 'revs' instance used is local to the function, and we now just set 'revs->dense_combined_merges' to 1 in this local instance. Signed-off-by: Sergey Organov <sorganov@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-18Merge branch 'mf/submodule-summary-with-correct-repository'Libravatar Junio C Hamano1-5/+6
"git diff/show" on a change that involves a submodule used to read the information on commits in the submodule from a wrong repository and gave a wrong information when the commit-graph is involved. * mf/submodule-summary-with-correct-repository: submodule: use submodule repository when preparing summary revision: use repository from rev_info when parsing commits
2020-09-18Merge branch 'os/collect-changed-submodules-optim'Libravatar Junio C Hamano1-1/+8
Optimization around submodule handling. * os/collect-changed-submodules-optim: submodule: suppress checking for file name and ref ambiguity for object ids
2020-09-09Merge branch 'ss/submodule-summary-in-c'Libravatar Junio C Hamano1-5/+5
Yet another subcommand of "git submodule" is getting rewritten in C. * ss/submodule-summary-in-c: submodule: port submodule subcommand 'summary' from shell to C t7421: introduce a test script for verifying 'summary' output submodule: rename helper functions to avoid ambiguity submodule: remove extra line feeds between callback struct and macro
2020-09-06submodule: suppress checking for file name and ref ambiguity for object idsLibravatar Orgad Shaneh1-1/+8
The argv argument of collect_changed_submodules() contains only object ids (the objects references of all the refs). Notify setup_revisions() that the input is not filenames by passing assume_dashdash, so it can avoid redundant stat for each ref. Also suppress refname_ambiguity flag to avoid filesystem lookups for each object. Similar logic can be found in cat-file, pack-objects and more. This change reduces the time for git fetch in my repo from 25s to 6s. Signed-off-by: Orgad Shaneh <orgads@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-09-03Merge branch 'jc/run-command-use-embedded-args'Libravatar Junio C Hamano1-9/+4
Various callers of run_command API has been modernized. * jc/run-command-use-embedded-args: run_command: teach API users to use embedded 'args' more
2020-08-27Merge branch 'jk/leakfix'Libravatar Junio C Hamano1-2/+2
Code clean-up. * jk/leakfix: submodule--helper: fix leak of core.worktree value config: fix leak in git_config_get_expiry_in_days() config: drop git_config_get_string_const() config: fix leaks from git_config_get_string_const() checkout: fix leak of non-existent branch names submodule--helper: use strbuf_release() to free strbufs clear_pattern_list(): clear embedded hashmaps
2020-08-26run_command: teach API users to use embedded 'args' moreLibravatar Junio C Hamano1-9/+4
The child_process structure has an embedded strvec for formulating the command line argument list these days, but code that predates the wide use of it prepared a separate char *argv[] array and manually set the child_process.argv pointer point at it. Teach these old-style code to lose the separate argv[] array. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-14config: fix leaks from git_config_get_string_const()Libravatar Jeff King1-2/+2
There are two functions to get a single config string: - git_config_get_string() - git_config_get_string_const() One might naively think that the first one allocates a new string and the second one just points us to the internal configset storage. But in fact they both allocate a new copy; the second one exists only to avoid having to cast when using it with a const global which we never intend to free. The documentation for the function explains that clearly, but it seems I'm not alone in being surprised by this. Of 17 calls to the function, 13 of them leak the resulting value. We could obviously fix these by adding the appropriate free(). But it would be simpler still if we actually had a non-allocating way to get the string. There's git_config_get_value() but that doesn't quite do what we want. If the config key is present but is a boolean with no value (e.g., "[foo]bar" in the file), then we'll get NULL (whereas the string versions will print an error and die). So let's introduce a new variant, git_config_get_string_tmp(), that behaves as these callers expect. We need a new name because we have new semantics but the same function signature (so even if we converted the four remaining callers, topics in flight might be surprised). The "tmp" is because this value should only be held onto for a short time. In practice it's rare for us to clear and refresh the configset, invalidating the pointer, but hopefully the "tmp" makes callers think about the lifetime. In each of the converted cases here the value only needs to last within the local function or its immediate caller. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-08-12submodule: rename helper functions to avoid ambiguityLibravatar Shourya Shukla1-5/+5
The helper functions: show_submodule_summary(), prepare_submodule_summary() and print_submodule_summary() are used by the builtin_diff() function in diff.c to generate a summary of submodules in the context of a diff. Functions with similar names are to be introduced in the upcoming port of submodule's summary subcommand. So, rename the helper functions to '*_diff_submodule_summary()' to avoid ambiguity. Mentored-by: Christian Couder <chriscool@tuxfamily.org> Mentored-by: Kaartic Sivaraam <kaartic.sivaraam@gmail.com> Signed-off-by: Shourya Shukla <shouryashukla.oo@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-07-30strvec: rename struct fieldsLibravatar Jeff King1-7/+7
The "argc" and "argv" names made sense when the struct was argv_array, but now they're just confusing. Let's rename them to "nr" (which we use for counts elsewhere) and "v" (which is rather terse, but reads well when combined with typical variable names like "args.v"). Note that we have to update all of the callers immediately. Playing tricks with the preprocessor is hard here, because we wouldn't want to rewrite unrelated tokens. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-07-28strvec: fix indentation in renamed callsLibravatar Jeff King1-15/+15
Code which split an argv_array call across multiple lines, like: argv_array_pushl(&args, "one argument", "another argument", "and more", NULL); was recently mechanically renamed to use strvec, which results in mis-matched indentation like: strvec_pushl(&args, "one argument", "another argument", "and more", NULL); Let's fix these up to align the arguments with the opening paren. I did this manually by sifting through the results of: git jump grep 'strvec_.*,$' and liberally applying my editor's auto-format. Most of the changes are of the form shown above, though I also normalized a few that had originally used a single-tab indentation (rather than our usual style of aligning with the open paren). I also rewrapped a couple of obvious cases (e.g., where previously too-long lines became short enough to fit on one), but I wasn't aggressive about it. In cases broken to three or more lines, the grouping of arguments is sometimes meaningful, and it wasn't worth my time or reviewer time to ponder each case individually. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-07-28strvec: convert remaining callers away from argv_array nameLibravatar Jeff King1-89/+89
We eventually want to drop the argv_array name and just use strvec consistently. There's no particular reason we have to do it all at once, or care about interactions between converted and unconverted bits. Because of our preprocessor compat layer, the names are interchangeable to the compiler (so even a definition and declaration using different names is OK). This patch converts all of the remaining files, as the resulting diff is reasonably sized. The conversion was done purely mechanically with: git ls-files '*.c' '*.h' | xargs perl -i -pe ' s/ARGV_ARRAY/STRVEC/g; s/argv_array/strvec/g; ' We'll deal with any indentation/style fallouts separately. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-07-28strvec: rename files from argv-array to strvecLibravatar Jeff King1-1/+1
This requires updating #include lines across the code-base, but that's all fairly mechanical, and was done with: git ls-files '*.c' '*.h' | xargs perl -i -pe 's/argv-array.h/strvec.h/' Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-06-24submodule: use submodule repository when preparing summaryLibravatar Michael Forney1-4/+4
In show_submodule_header(), we gather the left and right commits of the submodule repository, as well as the merge bases. However, prepare_submodule_summary() initializes the rev_info with the_repository, so we end up parsing the commit in the wrong repository. This results in a fatal error in parse_commit_in_graph(), since the passed item does not belong to the repository's commit graph. Signed-off-by: Michael Forney <mforney@mforney.org> Acked-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-04-22Merge branch 'jk/oid-array-cleanups'Libravatar Junio C Hamano1-1/+1
Code cleanup. * jk/oid-array-cleanups: oidset: stop referring to sha1-array ref-filter: stop referring to "sha1 array" bisect: stop referring to sha1_array test-tool: rename sha1-array to oid-array oid_array: rename source file from sha1-array oid_array: use size_t for iteration oid_array: use size_t for count and allocation
2020-03-30oid_array: rename source file from sha1-arrayLibravatar Jeff King1-1/+1
We renamed the actual data structure in 910650d2f8 (Rename sha1_array to oid_array, 2017-03-31), but the file is still called sha1-array. Besides being slightly confusing, it makes it more annoying to grep for leftover occurrences of "sha1" in various files, because the header is included in so many places. Let's complete the transition by renaming the source and header files (and fixing up a few comment references). I kept the "-" in the name, as that seems to be our style; cf. fc1395f4a4 (sha1_file.c: rename to use dash in file name, 2018-04-10). We also have oidmap.h and oidset.h without any punctuation, but those are "struct oidmap" and "struct oidset" in the code. We _could_ make this "oidarray" to match, but somehow it looks uglier to me because of the length of "array" (plus it would be a very invasive patch for little gain). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-03-10get_superproject_working_tree(): return strbufLibravatar Alexandr Miloslavskiy1-9/+8
Together with the previous commits, this commit fully fixes the problem of using shared buffer for `real_path()` in `get_superproject_working_tree()`. Signed-off-by: Alexandr Miloslavskiy <alexandr.miloslavskiy@syntevo.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-03-10real_path_if_valid(): remove unsafe APILibravatar Alexandr Miloslavskiy1-3/+4
This commit continues the work started with previous commit. Signed-off-by: Alexandr Miloslavskiy <alexandr.miloslavskiy@syntevo.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-03-10real_path: remove unsafe APILibravatar Alexandr Miloslavskiy1-1/+3
Returning a shared buffer invites very subtle bugs due to reentrancy or multi-threading, as demonstrated by the previous patch. There was an unfinished effort to abolish this [1]. Let's finally rid of `real_path()`, using `strbuf_realpath()` instead. This patch uses a local `strbuf` for most places where `real_path()` was previously called. However, two places return the value of `real_path()` to the caller. For them, a `static` local `strbuf` was added, effectively pushing the problem one level higher: read_gitfile_gently() get_superproject_working_tree() [1] https://lore.kernel.org/git/1480964316-99305-1-git-send-email-bmwill@google.com/ Signed-off-by: Alexandr Miloslavskiy <alexandr.miloslavskiy@syntevo.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>