Add more information to the comment introducing the four reference
transaction update functions, so that each function's docstring
doesn't have to repeat it. Add a pointer from the individual
functions' docstrings to the introductory comment.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Add a docstring for update_ref(), emphasizing its similarity to
ref_transaction_update(). Rename its parameters to match those of
ref_transaction_update().
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Reviewed-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
If NULL is passed to ref_transaction_update()'s new_sha1 parameter,
then just verify old_sha1 (under lock) without trying to change the
new value of the reference.
Use this functionality to add a new function ref_transaction_verify(),
which checks the current value of the reference under lock but doesn't
change it.
Use ref_transaction_verify() in the implementation of "git update-ref
--stdin"'s "verify" command to avoid the awkward need to "update" the
reference to its existing value.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Reviewed-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
It makes no sense to delete a reference that is already known not to
exist.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Reviewed-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Creating a reference requires a new_sha1 that is not NULL and not
null_sha1.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Reviewed-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
If HEAD doesn't point at anything during the initial check, then we
should make sure that it *still* doesn't point at anything when we are
ready to update the reference. Otherwise, another process might commit
while we are working (e.g., while we are waiting for the user to edit
the commit message) and we will silently overwrite it.
This fixes a failing test in t7516.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Reviewed-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Committing involves the following steps:
1. Determine the current value of HEAD (if any).
2. Create the new commit object.
3. Update HEAD.
Please note that step 2 can take arbitrarily long, because it might
involve the user editing a commit message.
If a second process sneaks in a commit during step 2, then the first
commit process should fail. This is usually done correctly, because
step 3 verifies that HEAD still points at the same commit that it
pointed to during step 1.
However, if there is a race when creating an *orphan* commit, then the
test in step 3 is skipped.
Add tests for proper handling of such races. One of the new tests
fails. It will be fixed in a moment.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Instead, verify the reference's old value if and only if old_sha1 is
non-NULL.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Reviewed-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Instead, verify the reference's old value if and only if old_sha1 is
non-NULL.
ref_transaction_delete() will get the same treatment in a moment.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Reviewed-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Instead of having a separate have_old field, record this boolean value
as a bit in the "flags" field.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Change the following functions' "flags" arguments from "int" to
"unsigned int":
* ref_transaction_update()
* ref_transaction_create()
* ref_transaction_delete()
* update_ref()
* delete_ref()
* lock_ref_sha1_basic()
Also change the "flags" member in "struct ref_update" to unsigned.
Suggested-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This fixes a memory leak when building the cache entries as
refresh_cache_entry may decide to return NULL, but it does not
free the cache entry structure which was passed in as an argument.
Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The "git push" documentation made the "--repo=<there>" option
easily misunderstood.
* mg/push-repo-option-doc:
git-push.txt: document the behavior of --repo
Code to read branch name from various files in .git/ directory
would have misbehaved if the code to write them left an empty file.
* jk/status-read-branch-name-fix:
read_and_strip_branch: fix typo'd address-of operator
The documentation incorrectly said that C(opy) and R(ename) are the
only ones that can be followed by the score number in the output in
the --raw format.
* jc/diff-format-doc:
diff-format doc: a score can follow M for rewrite
A broken pack .idx file in the receiving repository prevented the
dumb http transport from fetching a good copy of it from the other
side.
* jk/dumb-http-idx-fetch-fix:
dumb-http: do not pass NULL path to parse_pack_index
The error message from "git commit", when a non-existing author
name was given as value to the "--author=" parameter, has been
reworded to avoid misunderstanding.
* mg/commit-author-no-match-malformed-message:
commit: reword --author error message
"git log --help" used to show rev-list options that are irrelevant
to the "log" command.
* jc/doc-log-rev-list-options:
Documentation: what does "git log --indexed-objects" even mean?
"git apply --whitespace=fix" used to under-allocate the memory
when the fix resulted in a longer text than the original patch.
* jc/apply-ws-fix-expands:
apply: count the size of postimage correctly
apply: make update_pre_post_images() sanity check the given postlen
apply.c: typofix
The interactive "show a list and let the user choose from it"
interface "add -i" used showed and prompted to the user even when
the candidate list was empty, against which the only "choice" the
user could have made was to choose nothing.
* ak/add-i-empty-candidates:
add -i: return from list_and_choose if there is no candidate
The insn sheet "git rebase -i" creates did not fully honor
core.abbrev settings.
* ks/rebase-i-abbrev:
rebase -i: use full object name internally throughout the script
"git fetch" over a remote-helper that cannot respond to "list"
command could not fetch from a symbolic reference e.g. HEAD.
* mh/deref-symref-over-helper-transport:
transport-helper: do not request symbolic refs to remote helpers
Only Perl version 5.8.0 or later is required, but that comes with
an older Getopt::Long (2.32) that does not support the 'no-'
prefix. Support for that was added in Getopt::Long version 2.33.
Since the help only mentions the 'no-' prefix and not the 'no'
prefix, add explicit support for the 'no-' prefix to support
older GetOptions versions.
Reported-by: Tom G. Christensen <tgc@statsbiblioteket.dk>
Signed-off-by: Kyle J. McKay <mackyle@gmail.com>
Tested-by: Tom G. Christensen <tgc@statsbiblioteket.dk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
What we wanted out of the SANITY precondition is that the filesystem
behaves sensibly with permission bits settings.
- You should not be able to remove a file in a read-only directory,
- You should not be able to tell if a file in a directory exists if
the directory lacks read or execute permission bits.
We used to cheat by approximating that condition with "is the /
writable?" test and/or "are we running as root?" test. Neither test
is sufficient or appropriate in environments like Cygwin.
Signed-off-by: Torsten Bögershausen <tboegi@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Update this ancient test script to a more modern style in which the
expected result is prepared inside the body of the test that uses
it. Also, instead of using $tree, a shell variable, throughout the
test script, create a tag that points at it, to make it easier to
manually debug the test script in its trash directory.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The "sanitize" helper wanted to strip the similarity and
dissimilarity scores when making comparison, but it was
stripping away the object names as well.
While we do not want to require the exact object names the tests
expect to be maintained, as it would be seen as an extra burden,
this would have prevented us catching a silly bug such as showing
non 0{40} object name on the preimage side of an addition or on the
postimage side of a deletion, because all [0-9a-f]{40} strings were
considered equally OK.
In the longer term, when a test only wants to see the status of the
change without having to worry about object names, it should be
rewritten not to inspect the raw format.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
These two files have been modified since the tests started using
as test input, making the exact object names they expect to be
different from what actually happens in the trash repository they
use to run tests.
Instead, take a snapshot of these two files and keep them in
t/diff-lib/ so that we can update the real ones without having to
worry about breaking tests.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The output the test expects is bogus.
It was left unnoticed only because compare_diff_raw, which only
cares about the add/delete/rename/copy was used to check the result.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The output the test #36 expects is bogus. There are no blob objects
whose names are 36a590... or 046d037... when this test was run.
It was left unnoticed only because compare_diff_raw, which only
cares about the add/delete/rename/copy was used to check the result.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
A complete rewrite of a single file was originally designed to be
expressed as a deletion immediately followed by a creation of the
same file, and the comments in the test updated here were written to
reflect that design decision made in f345b0a0 (Add -B flag to diff-*
brothers., 2005-05-30). However, we later realized that a complete
rewrite is merely how a textual diff should be represented at
366175ef (Rework -B output., 2005-06-19), and updated the actual
tests. But we forgot to update the introductory text while doing
so.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
41 bytes is the exact number of bytes needed for having the returned
hex string represented. 50 seems to be an arbitrary number, such
that there are no benefits from alignment to certain address boundaries.
Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
A few files include the same header file directly more than once.
As all these headers protect themselves against repeated inclusion
by the "#ifndef FOO_H / #define FOO_H / ... / #endif" idiom, leave
only the first inclusion and remove the later inclusion as a no-op
clean-up.
Signed-off-by: Дилян Палаузов <git-dpa@aegee.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Sometimes people respond "y<ENTER>" (or "yes<ENTER>") when asked
this question:
Which 8bit encoding should I declare [UTF-8]?
We already have a mechanism to avoid accepting a mistyped e-mail
address (we ask to confirm when the given address lacks "@" in it);
reuse it to trigger the same confirmation when given a very short
answer. As a typical charset name is probably at least 4 chars or
longer (e.g. "UTF8" spelled without the dash, or "Big5"), this would
prevent such a mistake.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
A remote helper is currently only told about the 'check-connectivity',
'cloning', and 'update-shallow' options when it supports the 'fetch'
command, but not when it supports 'import' instead.
This is especially important for the 'cloning' option, because it
means a remote helper that only supports 'import' can't distinguish
between a clone and a pull besides doing some assumptions from the
git directory state.
Signed-off-by: Mike Hommey <mh@glandium.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Currently, a remote helper is only told about the progress and verbosity
options for the 'fetch' and 'push' commands. This means a remote helper
that implements 'import' and 'export' can never know the user requested
progress or verbosity (or lack thereof) through the command line.
Telling the remote helper about those options after asking for its
capabilities ensures it can act accordingly for all commands.
Signed-off-by: Mike Hommey <mh@glandium.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
There is no reason to "reserve" a gap between the public and private
flags values.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
It is only used internally now. Document it a little bit better, too.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Reviewed-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Since 0b6806b9 (xread, xwrite: limit size of IO to 8MB, 2013-08-20),
we chomp our calls to read(2) and write(2) into chunks of
MAX_IO_SIZE bytes (8 MiB), because a large IO results in a bad
latency when the program needs to be killed. This also brought our
IO below SSIZE_MAX, which is a limit POSIX allows read(2) and
write(2) to fail when the IO size exceeds it, for OS X, where a
problem was originally reported.
However, there are other systems that define SSIZE_MAX smaller than
our default, and feeding 8 MiB to underlying read(2)/write(2) would
fail. Make sure we clip our calls to the lower limit as well.
Reported-by: Joachim Schmitz <jojo@schmitz-digital.de>
Helped-by: Torsten Bögershausen <tboegi@web.de>
Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Mark file-local symbols as "static", and drop functions that nobody
uses.
* jc/unused-symbols:
shallow.c: make check_shallow_file_for_update() static
remote.c: make clear_cas_option() static
urlmatch.c: make match_urls() static
revision.c: make save_parents() and free_saved_parents() static
line-log.c: make line_log_data_init() static
pack-bitmap.c: make pack_bitmap_filename() static
prompt.c: remove git_getpass() nobody uses
http.c: make finish_active_slot() and handle_curl_result() static
Extending the js/push-to-deploy topic, the behaviour of "git push"
when updating the working tree and the index with an update to the
branch that is checked out can be tweaked by push-to-checkout hook.
* jc/push-to-checkout:
receive-pack: support push-to-checkout hook
receive-pack: refactor updateInstead codepath
"git push" has been taught a "--atomic" option that makes push to
update more than one ref an "all-or-none" affair.
* sb/atomic-push:
Document receive.advertiseatomic
t5543-atomic-push.sh: add basic tests for atomic pushes
push.c: add an --atomic argument
send-pack.c: add --atomic command line argument
send-pack: rename ref_update_to_be_sent to check_to_send_update
receive-pack.c: negotiate atomic push support
receive-pack.c: add execute_commands_atomic function
receive-pack.c: move transaction handling in a central place
receive-pack.c: move iterating over all commands outside execute_commands
receive-pack.c: die instead of error in case of possible future bug
receive-pack.c: shorten the execute_commands loop over all commands
Restructure "reflog expire" to fit the reflogs better with the
recently updated ref API.
Looked reasonable (except that some shortlog entries stood out like
a sore thumb).
* mh/reflog-expire: (24 commits)
refs.c: let fprintf handle the formatting
refs.c: don't expose the internal struct ref_lock in the header file
lock_any_ref_for_update(): inline function
refs.c: remove unlock_ref/close_ref/commit_ref from the refs api
reflog_expire(): new function in the reference API
expire_reflog(): treat the policy callback data as opaque
Move newlog and last_kept_sha1 to "struct expire_reflog_cb"
expire_reflog(): move rewrite to flags argument
expire_reflog(): move verbose to flags argument
expire_reflog(): pass flags through to expire_reflog_ent()
struct expire_reflog_cb: a new callback data type
Rename expire_reflog_cb to expire_reflog_policy_cb
expire_reflog(): move updateref to flags argument
expire_reflog(): move dry_run to flags argument
expire_reflog(): add a "flags" argument
expire_reflog(): extract two policy-related functions
Extract function should_expire_reflog_ent()
expire_reflog(): use a lock_file for rewriting the reflog file
expire_reflog(): return early if the reference has no reflog
expire_reflog(): rename "ref" parameter to "refname"
...
"git log --invert-grep --grep=WIP" will show only commits that do
not have the string "WIP" in their messages.
* cj/log-invert-grep:
log: teach --invert-grep option
