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On-the-wire protocol v2 easily falls into a deadlock between the
remote-curl helper and the fetch-pack process when the server side
prematurely throws an error and disconnects. The communication has
been updated to make it more robust.
* dl/remote-curl-deadlock-fix:
stateless-connect: send response end packet
pkt-line: define PACKET_READ_RESPONSE_END
remote-curl: error on incomplete packet
pkt-line: extern packet_length()
transport: extract common fetch_pack() call
remote-curl: remove label indentation
remote-curl: fix typo
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"git bugreport" learns to report what shell is in use.
* es/bugreport-shell:
bugreport: include user interactive shell
help: add shell-path to --build-options
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Clean-up the commit-graph codepath.
* tb/commit-graph-no-check-oids:
commit-graph: drop COMMIT_GRAPH_WRITE_CHECK_OIDS flag
t5318: reorder test below 'graph_read_expect'
commit-graph.c: simplify 'fill_oids_from_commits'
builtin/commit-graph.c: dereference tags in builtin
builtin/commit-graph.c: extract 'read_one_commit()'
commit-graph.c: peel refs in 'add_ref_to_set'
commit-graph.c: show progress of finding reachable commits
commit-graph.c: extract 'refs_cb_data'
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Some repositories in the wild have commits that record nonsense
committer timezone (e.g. rails.git); "git fast-import" learned an
option to pass these nonsense timestamps intact to allow recreating
existing repositories as-is.
* en/fast-import-looser-date:
fast-import: add new --date-format=raw-permissive format
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The commands in the "diff" family learned to honor "diff.relative"
configuration variable.
* la/diff-relative-config:
diff: add config option relative
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Docfix.
* jx/pkt-line-doc-count-fix:
doc: fix wrong 4-byte length of pkt-line message
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"feature.experimental" configuration variable is to let volunteers
easily opt into a set of newer features, which use of the v2
transport protocol is now a part of.
* jn/experimental-opts-into-proto-v2:
config: let feature.experimental imply protocol.version=2
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There are multiple repositories in the wild with random, invalid
timezones. Most notably is a commit from rails.git with a timezone of
"+051800"[1]. A few searches will find other repos with that same
invalid timezone as well. Further, Peff reports that GitHub relaxed
their fsck checks in August 2011 to accept any timezone value[2], and
there have been multiple reports to filter-repo about fast-import
crashing while trying to import their existing repositories since they
had timezone values such as "-7349423" and "-43455309"[3].
The existing check on timezone values inside fast-import may prove
useful for people who are crafting fast-import input by hand or with a
new script. For them, the check may help them avoid accidentally
recording invalid dates. (Note that this check is rather simplistic and
there are still several forms of invalid dates that fast-import does not
check for: dates in the future, timezone values with minutes that are
not divisible by 15, and timezone values with minutes that are 60 or
greater.) While this simple check may have some value for those users,
other users or tools will want to import existing repositories as-is.
Provide a --date-format=raw-permissive format that will not error out on
these otherwise invalid timezones so that such existing repositories can
be imported.
[1] https://github.com/rails/rails/commit/4cf94979c9f4d6683c9338d694d5eb3106a4e734
[2] https://lore.kernel.org/git/20200521195513.GA1542632@coredump.intra.peff.net/
[3] https://github.com/newren/git-filter-repo/issues/88
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Docfix.
* bc/sha-256-part-1-of-4:
Documentation: correct hash environment variable
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Docfix.
* ma/rev-list-options-docfix:
rev-list-options.txt: start a list for `show-pulls`
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To set the default hash algorithm you can set the `GIT_DEFAULT_HASH`
environment variable. In the documentation this variable is named
`GIT_DEFAULT_HASH_ALGORITHM`, which is incorrect.
Signed-off-by: Toon Claes <toon@iotcl.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Doc markup fix.
* ss/faq-ignore:
gitfaq: avoid validation error with older asciidoc
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The explanation of the `--show-pulls` option added in commit 8d049e182e
("revision: --show-pulls adds helpful merges", 2020-04-10) consists of
several paragraphs and we use "+" throughout to tie them together in one
long chain of list continuations. Only thing is, we're not in any kind
of list, so these pluses end up being rendered literally.
The preceding few paragraphs describe `--ancestry-path` and there we
*do* have a list, since we've started one with `--ancestry-path::`. In
fact, we have several such lists for all the various history-simplifying
options we're discussing earlier in this file.
Thus, we're missing a list both from a consistency point of view and
from a practical rendering standpoint.
Let's start a list for `--show-pulls` where we start actually discussing
the option, and keep the paragraphs preceding it out of that list. That
is, drop all those pluses before the new list we're adding here.
Helped-by: Derrick Stolee <stolee@gmail.com>
Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Reviewed-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When building with asciidoc-8.4.5 (as found on CentOS/Red Hat 6), the
period in the "[[files-in-.gitignore-are-tracked]]" anchor is not
properly parsed as a section:
WARNING: gitfaq.txt: line 245: missing [[files-in-.gitignore-are-tracked]] section
The resulting XML file fails to validate with xmlto:
xmlto: /git/Documentation/gitfaq.xml does not validate (status 3)
xmlto: Fix document syntax or use --skip-validation option
/git/Documentation/gitfaq.xml:3: element refentry: validity error :
Element refentry content does not follow the DTD, expecting
(beginpage? , indexterm* , refentryinfo? , refmeta? , (remark | link
| olink | ulink)* , refnamediv+ , refsynopsisdiv? , (refsect1+ |
refsection+)), got (refmeta refnamediv refsynopsisdiv refsect1
refsect1 refsect1 refsect1 variablelist refsect1 refsect1 )
Document /git/Documentation/gitfaq.xml does not validate
Let's avoid breaking users of platforms which ship an old version of
asciidoc, since the cost to do so is quite low.
Reported-by: Son Luong Ngoc <sluongng@gmail.com>
Signed-off-by: Todd Zullinger <tmz@pobox.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Various doc fixes.
* ma/doc-fixes:
git-sparse-checkout.txt: add missing '
git-credential.txt: use list continuation
git-commit-graph.txt: fix list rendering
git-commit-graph.txt: fix grammo
date-formats.txt: fix list continuation
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Currently, remote-curl acts as a proxy and blindly forwards packets
between an HTTP server and fetch-pack. In the case of a stateless RPC
connection where the connection is terminated before the transaction is
complete, remote-curl will blindly forward the packets before waiting on
more input from fetch-pack. Meanwhile, fetch-pack will read the
transaction and continue reading, expecting more input to continue the
transaction. This results in a deadlock between the two processes.
This can be seen in the following command which does not terminate:
$ git -c protocol.version=2 clone https://github.com/git/git.git --shallow-since=20151012
Cloning into 'git'...
whereas the v1 version does terminate as expected:
$ git -c protocol.version=1 clone https://github.com/git/git.git --shallow-since=20151012
Cloning into 'git'...
fatal: the remote end hung up unexpectedly
Instead of blindly forwarding packets, make remote-curl insert a
response end packet after proxying the responses from the remote server
when using stateless_connect(). On the RPC client side, ensure that each
response ends as described.
A separate control packet is chosen because we need to be able to
differentiate between what the remote server sends and remote-curl's
control packets. By ensuring in the remote-curl code that a server
cannot send response end packets, we prevent a malicious server from
being able to perform a denial of service attack in which they spoof a
response end packet and cause the described deadlock to happen.
Reported-by: Force Charlie <charlieio@outlook.com>
Helped-by: Jeff King <peff@peff.net>
Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The `diff.relative` boolean option set to `true` shows only changes in
the current directory/value specified by the `path` argument of the
`relative` option and shows pathnames relative to the aforementioned
directory.
Teach `--no-relative` to override earlier `--relative`
Add for git-format-patch(1) options documentation `--relative` and
`--no-relative`
Signed-off-by: Laurent Arnoud <laurent@spkdev.net>
Acked-by: Đoàn Trần Công Danh <congdanhqx@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The first four bytes of the line, the pkt-len, indicates the total
length of the pkt-line in hexadecimal. Fix wrong pkt-len headers of
some pkt-line messages in `http-protocol.txt` and `pack-protocol.txt`.
Reviewed-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Jiuyang Xie <jiuyang.xjy@alibaba-inc.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Git 2.26 used protocol v2 as its default protocol, but soon after
release, users noticed that the protocol v2 negotiation code was prone
to fail when fetching from some remotes that are far ahead of others
(such as linux-next.git versus Linus's linux.git). That has been
fixed by 0b07eecf6ed (Merge branch 'jt/v2-fetch-nego-fix',
2020-05-01), but to be cautious, we are using protocol v0 as the
default in 2.27 to buy some time for any other unanticipated issues to
surface.
To that end, let's ensure that users requesting the bleeding edge
using the feature.experimental flag *do* get protocol v2. This way,
we can gain experience with a wider audience for the new protocol
version and be more confident when it is time to enable it by default
for all users in some future Git version.
Implementation note: this isn't with the rest of the
feature.experimental options in repo-settings.c because those are tied
to a repository object, whereas this code path is used for operations
like "git ls-remote" that do not require a repository.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Doc fix.
* es/bugreport:
git-bugreport.txt: adjust reference to strftime(3)
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Where we explain the 'reapply' command, we don't properly wrap it in
single quote marks like we do with the other commands: We omit the
closing mark ("'reapply") and this ends up being rendered literally as
"'reapply". Add the missing "'".
Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Use list continuation to avoid the second and third paragraphs
rendering with a different indentation from the first one where we
describe the "url" attribute.
Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The first list item follows immediately on the paragraph where we
introduce the list. This makes the "*" render literally as part of one
huge paragraph. (With AsciiDoc, everything is fine after that, but with
Asciidoctor, we get some minor follow-on errors.) Add an empty line --
with a list continuation ("+") -- to make the first list item render ok.
Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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It's easy to mix up the possessive "its" and "it's" ("it is"). Correct
an instance of this.
Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The blank line before the lone "+" means it isn't detected as a list
continuation, but instead renders literally, at least with AsciiDoc.
Drop the empty line and, while at it, add a closing period to the
preceding paragraph.
Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The strftime(3) man page is outside of the Git suite. Refererence it as
we do other external man pages and avoid creating a broken link when
generating the HTML documentation.
Signed-off-by: Todd Zullinger <tmz@pobox.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Since 7c5c9b9c57 (commit-graph: error out on invalid commit oids in
'write --stdin-commits', 2019-08-05), the commit-graph builtin dies on
receiving non-commit OIDs as input to '--stdin-commits'.
This behavior can be cumbersome to work around in, say, the case of
piping 'git for-each-ref' to 'git commit-graph write --stdin-commits' if
the caller does not want to cull out non-commits themselves. In this
situation, it would be ideal if 'git commit-graph write' wrote the graph
containing the inputs that did pertain to commits, and silently ignored
the remainder of the input.
Some options have been proposed to the effect of '--[no-]check-oids'
which would allow callers to have the commit-graph builtin do just that.
After some discussion, it is difficult to imagine a caller who wouldn't
want to pass '--no-check-oids', suggesting that we should get rid of the
behavior of complaining about non-commit inputs altogether.
If callers do wish to retain this behavior, they can easily work around
this change by doing the following:
git for-each-ref --format='%(objectname) %(objecttype) %(*objecttype)' |
awk '
!/commit/ { print "not-a-commit:"$1 }
/commit/ { print $1 }
' |
git commit-graph write --stdin-commits
To make it so that valid OIDs that refer to non-existent objects are
indeed an error after loosening the error handling, perform an extra
lookup to make sure that object indeed exists before sending it to the
commit-graph internals.
Helped-by: Jeff King <peff@peff.net>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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"git multi-pack-index repack" has been taught to honor some
repack.* configuration variables.
* sn/midx-repack-with-config:
multi-pack-index: respect repack.packKeptObjects=false
midx: teach "git multi-pack-index repack" honor "git repack" configurations
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Code cleanup and typofixes
* ds/bloom-cleanup:
completion: offer '--(no-)patch' among 'git log' options
bloom: use num_changes not nr for limit detection
bloom: de-duplicate directory entries
Documentation: changed-path Bloom filters use byte words
bloom: parse commit before computing filters
test-bloom: fix usage typo
bloom: fix whitespace around tab length
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Doc update.
* jc/codingstyle-compare-with-null:
CodingGuidelines: do not ==/!= compare with 0 or '\0' or NULL
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"git bugreport" learned to report enabled hooks in the repository.
* es/bugreport-with-hooks:
bugreport: collect list of populated hooks
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Random bits of FAQ.
* ss/faq-fetch-pull:
gitfaq: fetching and pulling a repository
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Random bits of FAQ.
* ss/faq-ignore:
gitfaq: files in .gitignore are tracked
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Minor in-code comments and documentation updates around credential
API.
* cb/credential-doc-fixes:
credential: document protocol updates
credential: update gitcredentials documentation
credential: correct order of parameters for credential_match
credential: update description for credential_from_url_gently
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It's possible a user may complain about the way that Git interacts with
their interactive shell, e.g. autocompletion or shell prompt. In that
case, it's useful for us to know which shell they're using
interactively.
Signed-off-by: Emily Shaffer <emilyshaffer@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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In Documentation/technical/commit-graph-format.txt, the definition
of the BIDX chunk specifies the length is a number of 8-byte words.
During development we discovered that using 8-byte words in the
Murmur3 hash algorithm causes issues with big-endian versus little-
endian machines. Thus, the hash algorithm was adapted to work on a
byte-by-byte basis. However, this caused a change in the definition
of a "word" in bloom.h. Now, a "word" is a single byte, which allows
filters to be as small as two bytes. These length-two filters are
demonstrated in t0095-bloom.sh, and a larger filter of length 25 is
demonstrated as well.
The original point of using 8-byte words was for alignment reasons.
It also presented opportunities for extremely sparse Bloom filters
when there were a small number of changes at a commit, creating a
very low false-positive rate. However, modifying the format at this
point is unlikely to be a valuable exercise. Also, this use of
single-byte granularity does present opportunities to save space.
It is unclear if 8-byte alignment of the filters would present any
meaningful performance benefits.
Modify the format document to reflect reality.
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When selecting a batch of pack-files to repack in the "git
multi-pack-index repack" command, Git should respect the
repack.packKeptObjects config option. When false, this option says that
the pack-files with an associated ".keep" file should not be repacked.
This config value is "false" by default.
There are two cases for selecting a batch of objects. The first is the
case where the input batch-size is zero, which specifies "repack
everything". The second is with a non-zero batch size, which selects
pack-files using a greedy selection criteria. Both of these cases are
updated and tested.
Reported-by: Son Luong Ngoc <sluongng@gmail.com>
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Doc update.
* bc/doc-credential-helper-value:
docs: document credential.helper allowed values
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Doc update.
* dl/doc-stash-remove-mention-of-reflog:
Doc: reference the "stash list" in autostash docs
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"git restore --staged --worktree" now defaults to take the contents
out of "HEAD", instead of erring out.
* es/restore-staged-from-head-by-default:
restore: default to HEAD when combining --staged and --worktree
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The coding guideline for shell scripts instructed to refer to a
variable with dollar-sign inside arithmetic expansion to work
around a bug in old versions of dash, which is a thing of the past.
Now we are not forbidden from writing $((var+1)).
* jk/arith-expansion-coding-guidelines:
CodingGuidelines: drop arithmetic expansion advice to use "$x"
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The samples in the credential documentation has been updated to
make it clear that we depict what would appear in the .git/config
file, by adding appropriate quotes as needed..
* jk/credential-sample-update:
gitcredentials(7): make shell-snippet example more realistic
gitcredentials(7): clarify quoting of helper examples
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The userdiff patterns for Markdown documents have been added.
* ah/userdiff-markdown:
userdiff: support Markdown
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Junio C Hamano
Elijah Newren
Toon Claes
Martin Ågren
Todd Zullinger
Denton Liu
Laurent Arnoud
Jiuyang Xie
Jonathan Nieder
Taylor Blau
Emily Shaffer
Derrick Stolee