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2017-06-05builtin/diff-tree: cleanup references to sha1Libravatar Brandon Williams1-5/+3
Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-05diff-tree: convert diff_tree_sha1 to struct object_idLibravatar Brandon Williams6-22/+20
Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-05notes-merge: convert notes_merge* to struct object_idLibravatar Brandon Williams1-3/+3
Convert notes_merge and notes_merge_commit to use struct object_id. Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-02tree-diff: convert diff_root_tree_sha1 to struct object_idLibravatar Brandon Williams1-2/+2
Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-02combine-diff: convert diff_tree_combined to struct object_idLibravatar Brandon Williams1-1/+1
Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-02patch-ids: convert to struct object_idLibravatar Brandon Williams1-1/+1
Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-02diff: convert fill_filespec to struct object_idLibravatar Brandon Williams2-3/+3
Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-02grep: convert to struct object_idLibravatar Brandon Williams1-11/+11
Convert the remaining parts of grep to use struct object_id. Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-02notes: convert some accessor functions to struct object_idLibravatar brian m. carlson1-10/+10
Convert add_note, get_note, and copy_note to take struct object_id. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-02builtin/notes: convert to struct object_idLibravatar brian m. carlson3-57/+57
Convert most of the static functions to use struct object_id. In addition, convert copy_notes_for_rewrite and its callers. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-02notes: make get_note return pointer to struct object_idLibravatar brian m. carlson1-11/+11
Make get_note return a pointer to a const struct object_id. Add a defensive check to ensure we don't accidentally dereference a NULL pointer. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-06-02notes: convert for_each_note to struct object_idLibravatar brian m. carlson1-3/+3
Convert for_each_note and each of the callbacks to use struct object_id. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-30Merge branch 'js/larger-timestamps'Libravatar Junio C Hamano1-1/+1
A follow-up hotfix for a topic already in 'master'. * js/larger-timestamps: name-rev: change a "long" variable to timestamp_t
2017-05-30Merge branch 'bw/pathspec-sans-the-index'Libravatar Junio C Hamano6-17/+39
Simplify parse_pathspec() codepath and stop it from looking at the default in-core index. * bw/pathspec-sans-the-index: pathspec: convert find_pathspecs_matching_against_index to take an index pathspec: remove PATHSPEC_STRIP_SUBMODULE_SLASH_CHEAP ls-files: prevent prune_cache from overeagerly pruning submodules pathspec: remove PATHSPEC_STRIP_SUBMODULE_SLASH_EXPENSIVE flag submodule: add die_in_unpopulated_submodule function pathspec: provide a more descriptive die message
2017-05-30Merge branch 'jc/name-rev-lw-tag'Libravatar Junio C Hamano1-7/+52
"git describe --contains" penalized light-weight tags so much that they were almost never considered. Instead, give them about the same chance to be considered as an annotated tag that is the same age as the underlying commit would. * jc/name-rev-lw-tag: name-rev: favor describing with tags and use committer date to tiebreak name-rev: refactor logic to see if a new candidate is a better name
2017-05-29Merge branch 'bm/interpret-trailers-cut-line-is-eom'Libravatar Junio C Hamano1-1/+1
"git interpret-trailers", when used as GIT_EDITOR for "git commit -v", looked for and appended to a trailer block at the very end, i.e. at the end of the "diff" output. The command has been corrected to pay attention to the cut-mark line "commit -v" adds to the buffer---the real trailer block should appear just before it. * bm/interpret-trailers-cut-line-is-eom: interpret-trailers: honor the cut line
2017-05-29Merge branch 'ja/do-not-ask-needless-questions'Libravatar Junio C Hamano3-7/+8
Git sometimes gives an advice in a rhetorical question that does not require an answer, which can confuse new users and non native speakers. Attempt to rephrase them. * ja/do-not-ask-needless-questions: git-filter-branch: be more direct in an error message read-tree -m: make error message for merging 0 trees less smart aleck usability: don't ask questions if no reply is required
2017-05-29Merge branch 'jk/bug-to-abort'Libravatar Junio C Hamano1-0/+3
Introduce the BUG() macro to improve die("BUG: ..."). * jk/bug-to-abort: usage: add NORETURN to BUG() function definitions config: complain about --local outside of a git repo setup_git_env: convert die("BUG") to BUG() usage.c: add BUG() function
2017-05-29Merge branch 'jc/read-tree-empty-with-m'Libravatar Junio C Hamano1-1/+1
"git read-tree -m" (no tree-ish) gave a nonsense suggestion "use --empty if you want to clear the index". With "-m", such a request will still fail anyway, as you'd need to name at least one tree-ish to be merged. * jc/read-tree-empty-with-m: read-tree: "read-tree -m --empty" does not make sense
2017-05-29Merge branch 'js/plug-leaks'Libravatar Junio C Hamano11-35/+69
Fix memory leaks pointed out by Coverity (and people). * js/plug-leaks: (26 commits) checkout: fix memory leak submodule_uses_worktrees(): plug memory leak show_worktree(): plug memory leak name-rev: avoid leaking memory in the `deref` case remote: plug memory leak in match_explicit() add_reflog_for_walk: avoid memory leak shallow: avoid memory leak line-log: avoid memory leak receive-pack: plug memory leak in update() fast-export: avoid leaking memory in handle_tag() mktree: plug memory leaks reported by Coverity pack-redundant: plug memory leak setup_discovered_git_dir(): plug memory leak setup_bare_git_dir(): help static analysis split_commit_in_progress(): simplify & fix memory leak checkout: fix memory leak cat-file: fix memory leak mailinfo & mailsplit: check for EOF while parsing status: close file descriptor after reading git-rebase-todo difftool: address a couple of resource/memory leaks ...
2017-05-29Merge branch 'jk/disable-pack-reuse-when-broken'Libravatar Junio C Hamano1-1/+5
"pack-objects" can stream a slice of an existing packfile out when the pack bitmap can tell that the reachable objects are all needed in the output, without inspecting individual objects. This strategy however would not work well when "--local" and other options are in use, and need to be disabled. * jk/disable-pack-reuse-when-broken: t5310: fix "; do" style pack-objects: disable pack reuse for object-selection options
2017-05-29Merge branch 'bc/object-id'Libravatar Junio C Hamano38-311/+331
Conversion from uchar[20] to struct object_id continues. * bc/object-id: (53 commits) object: convert parse_object* to take struct object_id tree: convert parse_tree_indirect to struct object_id sequencer: convert do_recursive_merge to struct object_id diff-lib: convert do_diff_cache to struct object_id builtin/ls-tree: convert to struct object_id merge: convert checkout_fast_forward to struct object_id sequencer: convert fast_forward_to to struct object_id builtin/ls-files: convert overlay_tree_on_cache to object_id builtin/read-tree: convert to struct object_id sha1_name: convert internals of peel_onion to object_id upload-pack: convert remaining parse_object callers to object_id revision: convert remaining parse_object callers to object_id revision: rename add_pending_sha1 to add_pending_oid http-push: convert process_ls_object and descendants to object_id refs/files-backend: convert many internals to struct object_id refs: convert struct ref_update to use struct object_id ref-filter: convert some static functions to struct object_id Convert struct ref_array_item to struct object_id Convert the verify_pack callback to struct object_id Convert lookup_tag to struct object_id ...
2017-05-29Merge branch 'bw/dir-c-stops-relying-on-the-index'Libravatar Junio C Hamano5-9/+11
API update. * bw/dir-c-stops-relying-on-the-index: dir: convert fill_directory to take an index dir: convert read_directory to take an index dir: convert read_directory_recursive to take an index dir: convert open_cached_dir to take an index dir: convert is_excluded to take an index dir: convert prep_exclude to take an index dir: convert add_excludes to take an index dir: convert is_excluded_from_list to take an index dir: convert last_exclude_matching_from_list to take an index dir: convert dir_add* to take an index dir: convert get_dtype to take index dir: convert directory_exists_in_index to take index dir: convert read_skip_worktree_file_from_index to take an index dir: stop using the index compatibility macros
2017-05-29Merge branch 'jc/repack-threads'Libravatar Junio C Hamano1-0/+5
"git repack" learned to accept the --threads=<n> option and pass it to pack-objects. * jc/repack-threads: repack: accept --threads=<n> and pass it down to pack-objects
2017-05-29Merge branch 'sb/reset-recurse-submodules'Libravatar Junio C Hamano1-0/+30
"git reset" learned "--recurse-submodules" option. * sb/reset-recurse-submodules: builtin/reset: add --recurse-submodules switch submodule.c: submodule_move_head works with broken submodules submodule.c: uninitialized submodules are ignored in recursive commands entry.c: submodule recursing: respect force flag correctly
2017-05-23Merge branch 'jt/push-options-doc'Libravatar Junio C Hamano1-2/+49
The receive-pack program now makes sure that the push certificate records the same set of push options used for pushing. * jt/push-options-doc: receive-pack: verify push options in cert docs: correct receive.advertisePushOptions default
2017-05-23Merge branch 'rs/checkout-am-fix-unborn'Libravatar Junio C Hamano2-2/+3
A few codepaths in "checkout" and "am" working on an unborn branch tried to access an uninitialized piece of memory. * rs/checkout-am-fix-unborn: am: check return value of resolve_refdup before using hash checkout: check return value of resolve_refdup before using hash
2017-05-23Merge branch 'ah/log-decorate-default-to-auto'Libravatar Junio C Hamano1-2/+2
Setting "log.decorate=false" in the configuration file did not take effect in v2.13, which has been corrected. * ah/log-decorate-default-to-auto: builtin/log: honor log.decorate
2017-05-20name-rev: change a "long" variable to timestamp_tLibravatar Junio C Hamano1-1/+1
Earlier dddbad72 ("timestamp_t: a new data type for timestamps", 2017-04-26) updated all in-core variables, fields and function return values that are used to store "seconds since epoch" to a new type timestamp_t. Unfortunately one variable "cutoff", which is used to keep track of the oldest timestamp of commit we saw on the command line, was "long" and left behind. Update it to timestamp_t as well. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-18interpret-trailers: honor the cut lineLibravatar Brian Malehorn1-1/+1
If a commit message is edited with the "verbose" option, the buffer will have a cut line and diff after the log message, like so: my subject # ------------------------ >8 ------------------------ # Do not touch the line above. # Everything below will be removed. diff --git a/foo.txt b/foo.txt index 5716ca5..7601807 100644 --- a/foo.txt +++ b/foo.txt @@ -1 +1 @@ -bar +baz "git interpret-trailers" is unaware of the cut line, and assumes the trailer block would be at the end of the whole thing. This can easily be seen with: $ GIT_EDITOR='git interpret-trailers --in-place --trailer Acked-by:me' \ git commit --amend -v Teach "git interpret-trailers" to notice the cut-line and ignore the remainder of the input when looking for a place to add new trailer block. This makes it consistent with how "git commit -v -s" inserts a new Signed-off-by: line. This can be done by the same logic as the existing helper function, wt_status_truncate_message_at_cut_line(), uses, but it wants the caller to pass a strbuf to it. Because the function ignore_non_trailer() used by the command takes a <pointer, length> pair, not a strbuf, steal the logic from wt_status_truncate_message_at_cut_line() to create a new wt_status_locate_end() helper function that takes <pointer, length> pair, and make ignore_non_trailer() call it to help "interpret-trailers". Since there is only one caller of wt_status_truncate_message_at_cut_line() in cmd_commit(), rewrite it to call wt_status_locate_end() helper instead and remove the old helper that no longer has any caller. Signed-off-by: Brian Malehorn <bmalehorn@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-16Merge branch 'js/larger-timestamps'Libravatar Junio C Hamano15-48/+48
Some platforms have ulong that is smaller than time_t, and our historical use of ulong for timestamp would mean they cannot represent some timestamp that the platform allows. Invent a separate and dedicated timestamp_t (so that we can distingiuish timestamps and a vanilla ulongs, which along is already a good move), and then declare uintmax_t is the type to be used as the timestamp_t. * js/larger-timestamps: archive-tar: fix a sparse 'constant too large' warning use uintmax_t for timestamps date.c: abort if the system time cannot handle one of our timestamps timestamp_t: a new data type for timestamps PRItime: introduce a new "printf format" for timestamps parse_timestamp(): specify explicitly where we parse timestamps t0006 & t5000: skip "far in the future" test when time_t is too limited t0006 & t5000: prepare for 64-bit timestamps ref-filter: avoid using `unsigned long` for catch-all data type
2017-05-16Merge branch 'jn/clone-add-empty-config-from-command-line'Libravatar Junio C Hamano1-1/+3
"git clone --config var=val" is a way to populate the per-repository configuration file of the new repository, but it did not work well when val is an empty string. This has been fixed. * jn/clone-add-empty-config-from-command-line: clone: handle empty config values in -c
2017-05-16Merge branch 'ab/clone-no-tags'Libravatar Junio C Hamano1-2/+11
"git clone" learned the "--no-tags" option not to fetch all tags initially, and also set up the tagopt not to follow any tags in subsequent fetches. * ab/clone-no-tags: tests: rename a test having to do with shallow submodules clone: add a --no-tags option to clone without tags tests: change "cd ... && git fetch" to "cd &&\n\tgit fetch"
2017-05-16Merge branch 'sk/status-short-branch-color-config'Libravatar Junio C Hamano1-0/+4
The colors in which "git status --short --branch" showed the names of the current branch and its remote-tracking branch are now configurable. * sk/status-short-branch-color-config: status: add color config slots for branch info in "--short --branch" status: fix missing newline when comment chars are disabled
2017-05-16Merge branch 'jk/am-leakfix'Libravatar Junio C Hamano1-20/+14
The codepath in "git am" that is used when running "git rebase" leaked memory held for the log message of the commits being rebased. * jk/am-leakfix: am: shorten ident_split variable name in get_commit_info() am: simplify allocations in get_commit_info() am: fix commit buffer leak in get_commit_info()
2017-05-15builtin/log: honor log.decorateLibravatar brian m. carlson1-2/+2
The recent change that introduced autodecorating of refs accidentally broke the ability of users to set log.decorate = false to override it. When the git_log_config was traversed a second time with an option other than log.decorate, the decoration style would be set to the automatic style, even if the user had already overridden it. Instead of setting the option in config parsing, set it in init_log_defaults instead. Add a test for this case. The actual additional config option doesn't matter, but it needs to be something not already set in the configuration file. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Acked-by: Alex Henrie <alexhenrie24@gmail.com> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-15config: complain about --local outside of a git repoLibravatar Jeff King1-0/+3
The "--local" option instructs git-config to read or modify the repository-level config. This doesn't make any sense if you're not actually in a repository. Older versions of Git would blindly try to read or write ".git/config". For reading, this would result in a quiet failure, since there was no config to read (and thus no matching config value). Writing would generally fail noisily, since ".git" was unlikely to exist. But since b1ef400ee (setup_git_env: avoid blind fall-back to ".git", 2016-10-20), we catch this in the call to git_pathdup() and die with an assertion. Dying is the right thing to do, but we should catch the problem early and give a more human-friendly error message. Note that even without --local, git-config will sometimes default to using local repository config (e.g., when writing). These cases are already protected by similar checks, and covered by a test in t1308. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-12read-tree -m: make error message for merging 0 trees less smart aleckLibravatar Jean-Noel Avila1-2/+3
"git read-tree -m" requires a tree argument to name the tree to be merged in. Git uses a cutesy error message to say so and why: $ git read-tree -m warning: read-tree: emptying the index with no arguments is deprecated; use --empty fatal: just how do you expect me to merge 0 trees? $ git read-tree -m --empty fatal: just how do you expect me to merge 0 trees? When lucky, that could produce an ah-hah moment for the user, but it's more likely to irritate and distract them. Instead, tell the user plainly that the tree argument is required. Also document this requirement in the git-read-tree(1) manpage where there is room to explain it in a more straightforward way. Signed-off-by: Jean-Noel Avila <jn.avila@free.fr> Helped-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-12usability: don't ask questions if no reply is requiredLibravatar Jean-Noel Avila2-5/+5
There has been a bug report by a corporate user that stated that "spelling mistake of stash followed by a yes prints character 'y' infinite times." This analysis was false. When the spelling of a command contains errors, the git program tries to help the user by providing candidates which are close to the unexisting command. E.g Git prints the following: git: 'stahs' is not a git command. See 'git --help'. Did you mean this? stash and then exits. The problem with this hint is that it is not formally indicated as an hint and the user is in fact encouraged to reply to the question, whereas the Git command is already finished. The user was unlucky enough that it was the command he was looking for, and replied "yes" on the command line, effectively launching the `yes` program. The initial error is that the Git programs, when launched in command-line mode (without interaction) must not ask questions, because these questions would normally require a user input as a reply that they won't handle indeed. That's a source of confusion on UX level. To improve the general usability of the Git suite, the following rule was applied: if the sentence * appears in a non-interactive session * is printed last before exit * is a question addressing the user ("you") the sentence is turned into affirmative and proposes the option. The basic rewording of the question sentences has been extended to other spots found in the source. Requested at https://github.com/git/git-scm.com/issues/999 by rpai1 Signed-off-by: Jean-Noel Avila <jn.avila@free.fr> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-12pathspec: convert find_pathspecs_matching_against_index to take an indexLibravatar Brandon Williams2-3/+3
Convert find_pathspecs_matching_against_index to take an index parameter. In addition mark pathspec.c with NO_THE_INDEX_COMPATIBILITY_MACROS now that it doesn't use any cache macros or reference 'the_index'. Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-12pathspec: remove PATHSPEC_STRIP_SUBMODULE_SLASH_CHEAPLibravatar Brandon Williams3-5/+2
Since (ae8d08242 pathspec: pass directory indicator to match_pathspec_item()) the path matching logic has been able to cope with submodules without needing to strip off a trailing slash if a path refers to a submodule. Since stripping the slash is no longer necessary, remove the PATHSPEC_STRIP_SUBMODULE_SLASH_CHEAP flag. Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-12ls-files: prevent prune_cache from overeagerly pruning submodulesLibravatar Brandon Williams1-6/+25
Since (ae8d08242 pathspec: pass directory indicator to match_pathspec_item()) the path matching logic has been able to cope with submodules without needing to strip off a trailing slash if a path refers to a submodule. ls-files is the only caller of 'parse_pathspec()' which relies on the behavior of the PATHSPEC_STRIP_SUBMODULE_SLASH_CHEAP flag because it uses the result to construct a common prefix of all provided pathspecs which is then used to prune the index of all entries which don't have that prefix. Since submodules entries in the index don't have a trailing slash 'prune_cache()' will be overeager and prune a submodule 'sub' if the common prefix is 'sub/'. To correct this behavior, only prune entries which don't match up to, but not including, a trailing slash of the common prefix. This is in preparation to remove the PATHSPEC_STRIP_SUBMODULE_SLASH_CHEAP flag in a later patch. Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-12pathspec: remove PATHSPEC_STRIP_SUBMODULE_SLASH_EXPENSIVE flagLibravatar Brandon Williams2-3/+6
Since (ae8d08242 pathspec: pass directory indicator to match_pathspec_item()) the path matching logic has been able to cope with submodules without needing to strip off a trailing slash if a path refers to a submodule. Since the stripping the trailing slash is no longer necessary, remove the PATHSPEC_STRIP_SUBMODULE_SLASH_EXPENSIVE flag. In addition, factor out the logic which dies if a path decends into a submodule so that it can still be used as a check after a pathspec struct has been initialized. Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-10read-tree: "read-tree -m --empty" does not make senseLibravatar Junio C Hamano1-1/+1
fb1bb965 ("read-tree: deprecate syntax without tree-ish args", 2010-09-10) wanted to deprecate "git read-tree" without any tree, which used to be the way to empty the index, and encourage use of "git read-tree --empty" instead. However, when used with "-m", "--empty" does not make any sense, either, simply because merging 0 trees will result in a different error anyway. Omit the deprecation warning and let the code to emit real error message diagnose the error. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-10submodule: add die_in_unpopulated_submodule functionLibravatar Brandon Williams1-0/+3
Currently 'git add' is the only command which dies when launched from an unpopulated submodule (the place-holder directory for a submodule which hasn't been checked out). This is triggered implicitly by passing the PATHSPEC_STRIP_SUBMODULE_SLASH_EXPENSIVE flag to 'parse_pathspec()'. Instead make this desire more explicit by creating a function 'die_in_unpopulated_submodule()' which dies if the provided 'prefix' has a leading path component which matches a submodule in the the index. Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-10receive-pack: verify push options in certLibravatar Jonathan Tan1-2/+49
In commit f6a4e61 ("push: accept push options", 2016-07-14), send-pack was taught to include push options both within the signed cert (if the push is a signed push) and outside the signed cert; however, receive-pack ignores push options within the cert, only handling push options outside the cert. Teach receive-pack, in the case that push options are provided for a signed push, to verify that the push options both within the cert and outside the cert are consistent. This sets in stone the requirement that send-pack redundantly send its push options in 2 places, but I think that this is better than the alternatives. Sending push options only within the cert is backwards-incompatible with existing Git servers (which read push options only from outside the cert), and sending push options only outside the cert means that the push options are not signed for. Signed-off-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-09checkout: fix memory leakLibravatar Junio C Hamano1-0/+1
When "git checkout -m" does an in-core three-way merge to carry local modifications forward to check out a different branch, the code forgot to free the updated contents it has in-core. Noticed-by: René Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-09pack-objects: disable pack reuse for object-selection optionsLibravatar Jeff King1-1/+5
If certain options like --honor-pack-keep, --local, or --incremental are used with pack-objects, then we need to feed each potential object to want_object_in_pack() to see if it should be filtered out. But when the bitmap reuse_packfile optimization is in effect, we do not call that function at all, and in fact skip adding the objects to the to_pack list entirely. This means we have a bug: for certain requests we will silently ignore those options and include objects in that pack that should not be there. The problem has been present since the inception of the pack-reuse code in 6b8fda2db (pack-objects: use bitmaps when packing objects, 2013-12-21), but it was unlikely to come up in practice. These options are generally used for on-disk packing, not transfer packs (which go to stdout), but we've never allowed pack reuse for non-stdout packs (until 645c432d6, we did not even use bitmaps, which the reuse optimization relies on; after that, we explicitly turned it off when not packing to stdout). We can fix this by just disabling the reuse_packfile optimization when the options are in use. In theory we could teach the pack-reuse code to satisfy these checks, but it's not worth the complexity. The purpose of the optimization is to keep the amount of per-object work we do to a minimum. But these options inherently require us to search for other copies of each object, drowning out any benefit of the pack-reuse optimization. But note that the optimizations from 56dfeb626 (pack-objects: compute local/ignore_pack_keep early, 2016-07-29) happen before pack-reuse, meaning that specifying "--honor-pack-keep" in a repository with no .keep files can still follow the fast path. There are tests in t5310 that check these options with bitmaps and --stdout, but they didn't catch the bug, and it's hard to adapt them to do so. One problem is that they don't use --delta-base-offset; without that option, we always disable the reuse optimization entirely. It would be fine to add it in (it actually makes the test more realistic), but that still isn't quite enough. The other problem is that the reuse code is very picky; it only kicks in when it can reuse most of a pack, starting from the first byte. So we'd have to start from a fully repacked and bitmapped state to trigger it. But the tests for these options use a much more subtle state; they want to be sure that the want_object_in_pack() code is allowing some objects but not others. Doing a full repack runs counter to that. So this patch adds new tests at the end of the script which create the fully-packed state and make sure that each option is not fooled by reusable pack. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-08object: convert parse_object* to take struct object_idLibravatar brian m. carlson14-23/+26
Make parse_object, parse_object_or_die, and parse_object_buffer take a pointer to struct object_id. Remove the temporary variables inserted earlier, since they are no longer necessary. Transform all of the callers using the following semantic patch: @@ expression E1; @@ - parse_object(E1.hash) + parse_object(&E1) @@ expression E1; @@ - parse_object(E1->hash) + parse_object(E1) @@ expression E1, E2; @@ - parse_object_or_die(E1.hash, E2) + parse_object_or_die(&E1, E2) @@ expression E1, E2; @@ - parse_object_or_die(E1->hash, E2) + parse_object_or_die(E1, E2) @@ expression E1, E2, E3, E4, E5; @@ - parse_object_buffer(E1.hash, E2, E3, E4, E5) + parse_object_buffer(&E1, E2, E3, E4, E5) @@ expression E1, E2, E3, E4, E5; @@ - parse_object_buffer(E1->hash, E2, E3, E4, E5) + parse_object_buffer(E1, E2, E3, E4, E5) Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-08tree: convert parse_tree_indirect to struct object_idLibravatar brian m. carlson9-17/+17
Convert parse_tree_indirect to take a pointer to struct object_id. Update all the callers. This transformation was achieved using the following semantic patch and manual updates to the declaration and definition. Update builtin/checkout.c manually as well, since it uses a ternary expression not handled by the semantic patch. @@ expression E1; @@ - parse_tree_indirect(E1.hash) + parse_tree_indirect(&E1) @@ expression E1; @@ - parse_tree_indirect(E1->hash) + parse_tree_indirect(E1) Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>