show-branch: drop unused parameter from show_independent()
This ref_name parameter was never used since the inception of
show_independent() in 1f8af483df (show-branch: --list and --independent,
2005-09-09). Let's drop it.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
rev-list: drop unused void pointer from finish_commit()
Our finish_commit() function used to be passed directly to the revision
machinery as a callback. But after 989937221a (rev-list: fix
--verify-objects --quiet becoming --objects, 2012-02-28), it is used
only as a helper in show_commit().
It doesn't use its void "data" parameter, and we no longer have to
conform to the callback interface. Let's drop it.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
remove_all_fetch_refspecs(): drop unused "remote" parameter
This function already takes a "key" parameter which uniquely identifies
the config key that we need to remove. There's no need for it to look at
the "remote" parameter at all. Let's drop it in the name of simplicity.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
receive-pack: drop unused "commands" from prepare_shallow_update()
We pass in the list of proposed ref updates to prepare_shallow_update(),
but that function doesn't actually need it (and never has since its
inception in 0a1bc12b6e4). Only its caller, update_shallow_info(), needs
to look at the command list.
Let's drop the unused parameter to reduce confusion.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
When collecting the list of objects to pack in get_object_list(), we
pass our rev_info struct around to some functions that don't need it.
This is due to 03a9683d22 (Simplify is_kept_pack(), 2009-02-28), where
the kept-pack handling was moved out of the revision machinery.
Let's drop these unused parameters.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
name-rev: drop unused parameters from is_better_name()
When this function was extracted in 0041bf6544 (name-rev: refactor logic
to see if a new candidate is a better name, 2017-03-29), it ended up
getting more arguments than it needs.
It's possible we may later use these values to evaluate the name, but
since it's a static function with a single caller, it will be easy to
add them back then.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
The mktree_line() function does not actually look at the "len" parameter
it is passed, and assumes the buffer it receives is NUL-terminated.
Since the caller always passes a strbuf, this will be true. Let's drop
the useless parameter.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
The v2_fix_up_changed() function doesn't actually need to see the
wt_status struct. It's possible that could change in the future, but
this is a static-local function with one caller. It would be easy to
read-add it back then. Let's drop the unused parameter.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
read-cache: drop unused parameter from threaded load
The load_cache_entries_threaded() function takes a src_offset parameter
that it doesn't use. This has been there since its inception in 77ff1127a4 (read-cache: load cache entries on worker threads,
2018-10-10).
Digging on the mailing list, that parameter was part of an earlier
iteration of the series[1], but became unnecessary when the code
switched to using the IEOT extension.
Ever since the inception of this function in e6baf4a1ae (clone: clone
from a repository with relative alternates, 2011-08-22), the "dest"
parameter has been unused. Instead, we use add_to_alternates_file(),
which relies on git_pathdup() to find the right file. That in turn works
because we will have initialized and entered the destination repo by
this point.
It's a bit subtle, but this is how it has always worked. And if our
assumptions change, the test in t5601 from e6baf4a1ae should let us
know.
In the meantime, let's drop this unused and confusing parameter from
copy_alternates().
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
submodule: drop unused prefix parameter from some functions
We stopped using the "prefix" parameter of
relocate_single_git_dir_into_superproject() and its callers in 202275b96b (submodule.c: get_super_prefix_or_empty, 2017-03-14), where
we switched to using the environment global directly.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
builtin: consistently pass cmd_* prefix to parse_options
If a builtin uses RUN_SETUP to request that git.c enter the repository
directory, we'll get passed in a "prefix" variable with the path to the
original directory. It's important to pass this to parse_options(),
since we may use it to fix up relative OPT_FILENAME() options. Some
builtins don't bother; let's make sure we do so consistently.
There may not be any particular bugs fixed here; OPT_FILENAME is
actually pretty rare, and none of these commands use it directly.
However, this does future-proof us against somebody adding an option
that uses it and creating a subtle bug that only shows up when you're in
a subdirectory of the repository.
In some cases, like hash-object and upload-pack, we don't specify
RUN_SETUP, so we know the prefix will always be empty. It's still worth
passing the variable along to keep the idiom consistent across all
builtins (and of course it protects us if they ever _did_ switch to
using RUN_SETUP).
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
cmd_{read,write}_tree: rename "unused" variable that is used
The "prefix" variable passed by git.c into the builtin cmd_read_tree()
and cmd_write_tree() functions is named "unused_prefix". But we do in
fact pass it to parse_options(), which may use the prefix to adjust any
filename options. Let's get rid of this confusing name.
However, we can't just call it "prefix". The reason these variables were
renamed in the first place is that they shadowed local variables named
"prefix", because these commands both take a "--prefix" option.
So let's rename the parameters, but try to reduce further confusion:
1. In both cases we'll call them "cmd_prefix" to mark that they're
part of the cmd_* interface.
2. In cmd_write_tree(), we'll rename the local prefix variable to
"tree_prefix" to make it more clear that we're talking about the
prefix to be used for the tree we're writing.
3. In cmd_read_tree(), the "prefix" local has since migrated into
"struct unpack_trees_options". We'll leave that alone, as the
context within the struct makes its meaning clear (we actually
_could_ just call the parameter "prefix" now, but that invites
confusion in the other direction).
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
The autoconf generated configure script failed to use the right
gettext() implementations from -libintl by ignoring useless stub
implementations shipped in some C library, which has been
corrected.
* vk/autoconf-gettext:
autoconf: #include <libintl.h> when checking for gettext()
The logic to tell if a Git repository has a working tree protects
"git branch -D" from removing the branch that is currently checked
out by mistake. The implementation of this logic was broken for
repositories with unusual name, which unfortunately is the norm for
submodules these days. This has been fixed.
* jk/untracked-cache-more-fixes:
untracked-cache: simplify parsing by dropping "len"
untracked-cache: simplify parsing by dropping "next"
untracked-cache: be defensive about missing NULs in index
"make check-docs", "git help -a", etc. did not account for cases
where a particular build may deliberately omit some subcommands,
which has been corrected.
* js/misc-doc-fixes:
Turn `git serve` into a test helper
test-tool: handle the `-C <directory>` option just like `git`
check-docs: do not bother checking for legacy scripts' documentation
docs: exclude documentation for commands that have been excluded
check-docs: allow command-list.txt to contain excluded commands
help -a: do not list commands that are excluded from the build
Makefile: drop the NO_INSTALL variable
remote-testgit: move it into the support directory for t5801
Code tightening against a "wrong" object appearing where an object
of a different type is expected, instead of blindly assuming that
the connection between objects are correctly made.
* tb/unexpected:
rev-list: detect broken root trees
rev-list: let traversal die when --missing is not in use
get_commit_tree(): return NULL for broken tree
list-objects.c: handle unexpected non-tree entries
list-objects.c: handle unexpected non-blob entries
t: introduce tests for unexpected object types
t: move 'hex2oct' into test-lib-functions.sh
Further code clean-up to allow the lowest level of name-to-object
mapping layer to work with a passed-in repository other than the
default one.
* nd/sha1-name-c-wo-the-repository: (34 commits)
sha1-name.c: remove the_repo from get_oid_mb()
sha1-name.c: remove the_repo from other get_oid_*
sha1-name.c: remove the_repo from maybe_die_on_misspelt_object_name
submodule-config.c: use repo_get_oid for reading .gitmodules
sha1-name.c: add repo_get_oid()
sha1-name.c: remove the_repo from get_oid_with_context_1()
sha1-name.c: remove the_repo from resolve_relative_path()
sha1-name.c: remove the_repo from diagnose_invalid_index_path()
sha1-name.c: remove the_repo from handle_one_ref()
sha1-name.c: remove the_repo from get_oid_1()
sha1-name.c: remove the_repo from get_oid_basic()
sha1-name.c: remove the_repo from get_describe_name()
sha1-name.c: remove the_repo from get_oid_oneline()
sha1-name.c: add repo_interpret_branch_name()
sha1-name.c: remove the_repo from interpret_branch_mark()
sha1-name.c: remove the_repo from interpret_nth_prior_checkout()
sha1-name.c: remove the_repo from get_short_oid()
sha1-name.c: add repo_for_each_abbrev()
sha1-name.c: store and use repo in struct disambiguate_state
sha1-name.c: add repo_find_unique_abbrev_r()
...
When given a tag that points at a commit-ish, "git replace --graft"
failed to peel the tag before writing a replace ref, which did not
make sense because the old graft mechanism the feature wants to
mimick only allowed to replace one commit object with another.
This has been fixed.
* cc/replace-graft-peel-tags:
replace: peel tag when passing a tag first to --graft
replace: peel tag when passing a tag as parent to --graft
t6050: redirect expected error output to a file
t6050: use test_line_count instead of wc -l
The list of conflicted paths shown in the editor while concluding a
conflicted merge was shown above the scissors line when the
clean-up mode is set to "scissors", even though it was commented
out just like the list of updated paths and other information to
help the user explain the merge better.
* dl/merge-cleanup-scissors-fix:
cherry-pick/revert: add scissors line on merge conflict
sequencer.c: save and restore cleanup mode
merge: add scissors line on merge conflict
merge: cleanup messages like commit
parse-options.h: extract common --cleanup option
commit: extract cleanup_mode functions to sequencer
t7502: clean up style
t7604: clean up style
t3507: clean up style
t7600: clean up style
"git cherry-pick" run with the "-x" or the "--signoff" option used
to (and more importantly, ought to) clean up the commit log message
with the --cleanup=space option by default, but this has been
broken since late 2017. This has been fixed.
* pw/sequencer-cleanup-with-signoff-x-fix:
sequencer: fix cleanup with --signoff and -x
Running "git add" on a repository created inside the current
repository is an explicit indication that the user wants to add it
as a submodule, but when the HEAD of the inner repository is on an
unborn branch, it cannot be added as a submodule. Worse, the files
in its working tree can be added as if they are a part of the outer
repository, which is not what the user wants. These problems are
being addressed.
* km/empty-repo-is-still-a-repo:
add: error appropriately on repository with no commits
dir: do not traverse repositories with no commits
submodule: refuse to add repository with no commits
"git merge-recursive" backend recently learned a new heuristics to
infer file movement based on how other files in the same directory
moved. As this is inherently less robust heuristics than the one
based on the content similarity of the file itself (rather than
based on what its neighbours are doing), it sometimes gives an
outcome unexpected by the end users. This has been toned down to
leave the renamed paths in higher/conflicted stages in the index so
that the user can examine and confirm the result.
* en/merge-directory-renames:
merge-recursive: switch directory rename detection default
merge-recursive: give callers of handle_content_merge() access to contents
merge-recursive: track information associated with directory renames
t6043: fix copied test description to match its purpose
merge-recursive: switch from (oid,mode) pairs to a diff_filespec
merge-recursive: cleanup handle_rename_* function signatures
merge-recursive: track branch where rename occurred in rename struct
merge-recursive: remove ren[12]_other fields from rename_conflict_info
merge-recursive: shrink rename_conflict_info
merge-recursive: move some struct declarations together
merge-recursive: use 'ci' for rename_conflict_info variable name
merge-recursive: rename locals 'o' and 'a' to 'obuf' and 'abuf'
merge-recursive: rename diff_filespec 'one' to 'o'
merge-recursive: rename merge_options argument from 'o' to 'opt'
Use 'unsigned short' for mode, like diff_filespec does
The recently added feature to add addresses that are on
anything-by: trailers in 'git send-email' was found to be way too
eager and considered nonsense strings as if they can be legitimate
beginning of *-by: trailer. This has been tightened.
* bs/sendemail-tighten-anything-by:
send-email: don't cc *-by lines with '-' prefix
"git send-email" has been taught to use quoted-printable when the
payload contains carriage-return. The use of the mechanism is in
line with the design originally added the codepath that chooses QP
when the payload has overly long lines.
* bc/send-email-qp-cr:
send-email: default to quoted-printable when CR is present
Code clean-up and a fix for "git fetch" by an explicit object name
(as opposed to fetching refs by name).
* jk/fetch-reachability-error-fix:
fetch: do not consider peeled tags as advertised tips
remote.c: make singular free_ref() public
fetch: use free_refs()
pkt-line: prepare buffer before handling ERR packets
upload-pack: send ERR packet for non-tip objects
t5530: check protocol response for "not our ref"
t5516: drop ok=sigpipe from unreachable-want tests
"git blame -- path" in a non-bare repository starts blaming from
the working tree, and the same command in a bare repository errors
out because there is no working tree by definition. The command
has been taught to instead start blaming from the commit at HEAD,
which is more useful.
* sg/blame-in-bare-start-at-head:
blame: default to HEAD in a bare repo when no start commit is given
Updating the display with progress message has been cleaned up to
deal better with overlong messages.
* sg/overlong-progress-fix:
progress: break too long progress bar lines
progress: clear previous progress update dynamically
progress: assemble percentage and counters in a strbuf before printing
progress: make display_progress() return void
While running "git diff" in a lazy clone, we can upfront know which
missing blobs we will need, instead of waiting for the on-demand
machinery to discover them one by one. Aim to achieve better
performance by batching the request for these promised blobs.
* jt/batch-fetch-blobs-in-diff:
diff: batch fetching of missing blobs
sha1-file: support OBJECT_INFO_FOR_PREFETCH
Conversion from unsigned char[20] to struct object_id continues.
* bc/hash-transition-16: (35 commits)
gitweb: make hash size independent
Git.pm: make hash size independent
read-cache: read data in a hash-independent way
dir: make untracked cache extension hash size independent
builtin/difftool: use parse_oid_hex
refspec: make hash size independent
archive: convert struct archiver_args to object_id
builtin/get-tar-commit-id: make hash size independent
get-tar-commit-id: parse comment record
hash: add a function to lookup hash algorithm by length
remote-curl: make hash size independent
http: replace sha1_to_hex
http: compute hash of downloaded objects using the_hash_algo
http: replace hard-coded constant with the_hash_algo
http-walker: replace sha1_to_hex
http-push: remove remaining uses of sha1_to_hex
http-backend: allow 64-character hex names
http-push: convert to use the_hash_algo
builtin/pull: make hash-size independent
builtin/am: make hash size independent
...
* en/fast-import-parsing-fix:
fast-import: fix erroneous handling of get-mark with empty orphan commits
fast-import: only allow cat-blob requests where it makes sense
fast-import: check most prominent commands first
git-fast-import.txt: fix wording about where ls command can appear
t9300: demonstrate bug with get-mark and empty orphan commits
Code cleanup with more careful error checking before using data
read from the commit-graph file.
* ab/commit-graph-fixes:
commit-graph: improve & i18n error messages
commit-graph write: don't die if the existing graph is corrupt
commit-graph verify: detect inability to read the graph
commit-graph: don't pass filename to load_commit_graph_one_fd_st()
commit-graph: don't early exit(1) on e.g. "git status"
commit-graph: fix segfault on e.g. "git status"
commit-graph tests: test a graph that's too small
commit-graph tests: split up corrupt_graph_and_verify()
Fix various glitches in "git gc" around reflog handling.
* ab/gc-reflog:
gc: handle & check gc.reflogExpire config
reflog tests: assert lack of early exit with expiry="never"
reflog tests: test for the "points nowhere" warning
reflog tests: make use of "test_config" idiom
gc: refactor a "call me once" pattern
gc: convert to using the_hash_algo
gc: remove redundant check for gc_auto_threshold
"git checkout -m <other>" was about carrying the differences
between HEAD and the working-tree files forward while checking out
another branch, and ignored the differences between HEAD and the
index. The command has been taught to abort when the index and the
HEAD are different.
* nd/checkout-m:
checkout: prevent losing staged changes with --merge
read-tree: add --quiet
unpack-trees: rename "gently" flag to "quiet"
unpack-trees: keep gently check inside add_rejected_path
"git cherry-pick --options A..B", after giving control back to the
user to ask help resolving a conflicted step, did not honor the
options it originally received, which has been corrected.
* pw/cherry-pick-continue:
cherry-pick --continue: remember options
cherry-pick: demonstrate option amnesia
sequencer: break some long lines
Code clean-up around a much-less-important-than-it-used-to-be
update_server_info() funtion.
* jk/server-info-rabbit-hole:
update_info_refs(): drop unused force parameter
server-info: drop objdirlen pointer arithmetic
server-info: drop nr_alloc struct member
server-info: use strbuf to read old info/packs file
server-info: simplify cleanup in parse_pack_def()
server-info: fix blind pointer arithmetic
http: simplify parsing of remote objects/info/packs
packfile: fix pack basename computation
midx: check both pack and index names for containment
t5319: drop useless --buffer from cat-file
t5319: fix bogus cat-file argument
pack-revindex: open index if necessary
packfile.h: drop extern from function declarations
* jk/unused-params-even-more:
parse_opt_ref_sorting: always use with NONEG flag
pretty: drop unused strbuf from parse_padding_placeholder()
pretty: drop unused "type" parameter in needs_rfc2047_encoding()
parse-options: drop unused ctx parameter from show_gitcomp()
fetch_pack(): drop unused parameters
report_path_error(): drop unused prefix parameter
unpack-trees: drop unused error_type parameters
unpack-trees: drop name_entry from traverse_by_cache_tree()
test-date: drop unused "now" parameter from parse_dates()
update-index: drop unused prefix_length parameter from do_reupdate()
log: drop unused "len" from show_tagger()
log: drop unused rev_info from early output
revision: drop some unused "revs" parameters
Test framework update to more robustly clean up leftover files and
processes after tests are done.
* sg/test-atexit:
t9811-git-p4-label-import: fix pipeline negation
git p4 test: disable '-x' tracing in the p4d watchdog loop
git p4 test: simplify timeout handling
git p4 test: clean up the p4d cleanup functions
git p4 test: use 'test_atexit' to kill p4d and the watchdog process
t0301-credential-cache: use 'test_atexit' to stop the credentials helper
tests: use 'test_atexit' to stop httpd
git-daemon: use 'test_atexit` to stop 'git-daemon'
test-lib: introduce 'test_atexit'
t/lib-git-daemon: make sure to kill the 'git-daemon' process
test-lib: fix interrupt handling with 'dash' and '--verbose-log -x'
The scripted version of "git rebase -i" wrote and rewrote the todo
list many times during a single step of its operation, and the
recent C-rewrite made a faithful conversion of the logic to C. The
implementation has been updated to carry necessary information
around in-core to avoid rewriting the same file over and over
unnecessarily.
* ag/sequencer-reduce-rewriting-todo:
rebase--interactive: move transform_todo_file()
sequencer: use edit_todo_list() in complete_action()
rebase-interactive: rewrite edit_todo_list() to handle the initial edit
rebase-interactive: append_todo_help() changes
rebase-interactive: use todo_list_write_to_file() in edit_todo_list()
sequencer: refactor skip_unnecessary_picks() to work on a todo_list
rebase--interactive: move rearrange_squash_in_todo_file()
rebase--interactive: move sequencer_add_exec_commands()
sequencer: change complete_action() to use the refactored functions
sequencer: make sequencer_make_script() write its script to a strbuf
sequencer: refactor rearrange_squash() to work on a todo_list
sequencer: refactor sequencer_add_exec_commands() to work on a todo_list
sequencer: refactor check_todo_list() to work on a todo_list
sequencer: introduce todo_list_write_to_file()
sequencer: refactor transform_todos() to work on a todo_list
sequencer: remove the 'arg' field from todo_item
sequencer: make the todo_list structure public
sequencer: changes in parse_insn_buffer()
The tests have been updated not to rely on the abbreviated option
names the parse-options API offers, to protect us from an
abbreviated form of an option that used to be unique within the
command getting non-unique when a new option that share the same
prefix is added.
* js/spell-out-options-in-tests:
tests: disallow the use of abbreviated options (by default)
tests (pack-objects): use the full, unabbreviated `--revs` option
tests (status): spell out the `--find-renames` option in full
tests (push): do not abbreviate the `--follow-tags` option
t5531: avoid using an abbreviated option
t7810: do not abbreviate `--no-exclude-standard` nor `--invert-match`
tests (rebase): spell out the `--force-rebase` option
tests (rebase): spell out the `--keep-empty` option
* js/check-docs-exe:
check-docs: fix for setups where executables have an extension
check-docs: do not expect guide pages to correspond to commands
check-docs: really look at the documented commands again
docs: do not document the `git remote-testgit` command
docs: move gitremote-helpers into section 7
* ps/stash-in-c: (28 commits)
tests: add a special setup where stash.useBuiltin is off
stash: optionally use the scripted version again
stash: add back the original, scripted `git stash`
stash: convert `stash--helper.c` into `stash.c`
stash: replace all `write-tree` child processes with API calls
stash: optimize `get_untracked_files()` and `check_changes()`
stash: convert save to builtin
stash: make push -q quiet
stash: convert push to builtin
stash: convert create to builtin
stash: convert store to builtin
stash: convert show to builtin
stash: convert list to builtin
stash: convert pop to builtin
stash: convert branch to builtin
stash: convert drop and clear to builtin
stash: convert apply to builtin
stash: mention options in `show` synopsis
stash: add tests for `git stash show` config
stash: rename test cases to be more descriptive
...
When "git branch -D <name>" is run, Git usually first checks if that
branch is currently checked out. But this check is not performed if the
Git directory of that repository is not at "<repo>/.git", which is the
case if that repository is a submodule that has its Git directory stored
as "super/.git/modules/<repo>", for example. This results in the branch
being deleted even though it is checked out.
This is because get_main_worktree() in worktree.c sets is_bare on a
worktree only using the heuristic that a repo is bare if the worktree's
path does not end in "/.git", and not bare otherwise. This is_bare code
was introduced in 92718b7438 ("worktree: add details to the worktree
struct", 2015-10-08), following a pre-core.bare heuristic. This patch
does 2 things:
- Teach get_main_worktree() to use is_bare_repository() instead,
introduced in 7d1864ce67 ("Introduce is_bare_repository() and
core.bare configuration variable", 2007-01-07) and updated in e90fdc39b6 ("Clean up work-tree handling", 2007-08-01). This solves
the "git branch -D <name>" problem described above. However...
- If a repository has core.bare=1 but the "git" command is being run
from one of its secondary worktrees, is_bare_repository() returns
false (which is fine, since there is a worktree available). However,
treating the main worktree as non-bare when it is bare causes issues:
for example, failure to delete a branch from a secondary worktree
that is referred to by a main worktree's HEAD, even if that main
worktree is bare.
In order to avoid that, also check core.bare when setting is_bare. If
core.bare=1, trust it, and otherwise, use is_bare_repository().
Signed-off-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
untracked-cache: simplify parsing by dropping "len"
The code which parses untracked-cache extensions from disk keeps a "len"
variable, which is the size of the string we are parsing. But since we
now have an "end of string" variable, we can just use that to get the
length when we need it. This eliminates the need to keep "len" up to
date (and removes the possibility of any errors where "len" and "eos"
get out of sync).
As a bonus, it means we are not storing a string length in an "int",
which is a potential source of overflows (though in this case it seems
fairly unlikely for that to cause any memory problems).
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
untracked-cache: simplify parsing by dropping "next"
When we parse an on-disk untracked cache, we have two pointers, "data"
and "next". As we parse, we point "next" to the end of an element, and
then later update "data" to match.
But we actually don't need two pointers. Each parsing step can just
update "data" directly from other variables we hold (and we don't have
to worry about bailing in an intermediate state, since any parsing
failure causes us to immediately discard "data" and return).
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
untracked-cache: be defensive about missing NULs in index
The on-disk format for the untracked-cache extension contains
NUL-terminated filenames. We parse these from the mmap'd file using
string functions like strlen(). This works fine in the normal case, but
if we see a malformed or corrupted index, we might read off the end of
our mmap.
Instead, let's use memchr() to find the trailing NUL within the bytes we
know are available, and return an error if it's missing.
Note that we can further simplify by folding another range check into
our conditional. After we find the end of the string, we set "next" to
the byte after the string and treat it as an error if there are no such
bytes left. That saves us from having to do a range check at the
beginning of each subsequent string (and works because there is always
data after each string). We can do both range checks together by
checking "!eos" (we didn't find a NUL) and "eos == end" (it was on the
last available byte, meaning there's nothing after). This replaces the
existing "next > end" checks.
Note also that the decode_varint() calls have a similar problem (we
don't even pass them "end"; they just keep parsing). These are probably
OK in practice since varints have a finite length (we stop parsing when
we'd overflow a uintmax_t), so the worst case is that we'd overflow into
reading the trailing bytes of the index.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Commit fde67d6896 (prune: use bitmaps for reachability traversal,
2019-02-13) uses bitmaps for pruning when they're available, but only
covers this functionality in the t/perf tests. This makes a kind of
sense, since the point is that the behaviour is indistinguishable before
and after the patch, just faster.
But since the bitmap code path is not exercised at all in the regular
test suite, it leaves us open to a regression where the behavior does in
fact change. The most thorough way to test that would be running the
whole suite with bitmaps enabled. But we don't yet have a way to do
that, and anyway it's expensive to do so. Let's at least add a basic
test that exercises this path and make sure we prune an object we should
(and not one that we shouldn't).
That would hopefully catch the most obvious breakages early.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
The `git serve` built-in was introduced in ed10cb952d31 (serve:
introduce git-serve, 2018-03-15) as a backend to serve Git protocol v2,
probably originally intended to be spawned by `git upload-pack`.
However, in the version that the protocol v2 patches made it into core
Git, `git upload-pack` calls the `serve()` function directly instead of
spawning `git serve`; The only reason in life for `git serve` to survive
as a built-in command is to provide a way to test the protocol v2
functionality.
Meaning that it does not even have to be a built-in that is installed
with end-user facing Git installations, but it can be a test helper
instead.
Let's make it so.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
test-tool: handle the `-C <directory>` option just like `git`
In preparation for moving `git serve` into `test-tool` (because it
really is only used by the test suite), we teach the `test-tool` the
useful trick to change the working directory before running the test
command, which will avoid introducing subshells in the test code.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
check-docs: do not bother checking for legacy scripts' documentation
In the recent years, there has been a big push to convert more and more
of Git's commands that are implemented as scripts to built-ins written
in pure, portable C, for robustness, speed and portability.
One strategy that served us well is to convert those scripts
incrementally, starting by renaming the scripts to
`git-legacy-<command>`, then introducing a built-in that does nothing
else at first than checking the config setting `<command>.useBuiltin`
(which defaults to `false` at the outset) and handing off to the legacy
script if so asked.
Obviously, those `git-legacy-<command>` commands share the documentation
with the built-in `git-<command>`, and are not intended to be called
directly anyway. So let's not try to ensure that they are documented
separately from their built-in versions.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
docs: exclude documentation for commands that have been excluded
When building with certain build options, some commands are excluded
from the build. For example, `git-credential-cache` is skipped when
building with `NO_UNIX_SOCKETS`.
Let's not build or package documentation for those excluded commands.
This issue was pointed out rightfully when running `make check-docs` on
Windows, where we do not yet have Unix sockets, and therefore the
`credential-cache` command is excluded (yet its documentation was built
and shipped).
Note: building the documentation via `make -C Documentation` leaves the
build system with no way to determine which commands have been
excluded. If called thusly, we gracefully fail to exclude their
documentation. Only when building the documentation via the top-level
Makefile will it get excluded properly, or after building
`Documentation/GIT-EXCLUDED-PROGRAMS` manually.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>