| Commit message (Collapse) | Author | Age | Files | Lines |
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After a note is removed, note_tree_consolidate is called to eliminate
some useless nodes. The typical case is that if you had an int_node
with 2 PTR_TYPE_NOTEs in it, and remove one of them, then the
PTR_TYPE_INTERNAL pointer in the parent tree can be replaced with the
remaining PTR_TYPE_NOTE.
This works fine when PTR_TYPE_NOTEs are involved, but falls flat when
other types are involved.
To put things in more practical terms, let's say we start from an empty
notes tree, and add 3 notes:
- one for a sha1 that starts with 424
- one for a sha1 that starts with 428
- one for a sha1 that starts with 4c
To keep track of this, note_tree.root will have a PTR_TYPE_INTERNAL at
a[4], pointing to an int_node*.
In turn, that int_node* will have a PTR_TYPE_NOTE at a[0xc], pointing to
the leaf_node* with the key and value, and a PTR_TYPE_INTERNAL at a[2],
pointing to another int_node*.
That other int_node* will have 2 PTR_TYPE_NOTE, one at a[4] and the
other at a[8].
When looking for the note for the sha1 starting with 428, get_note() will
recurse through (simplified) root.a[4].a[2].a[8].
Now, if we remove the note for the sha1 that starts with 4c, we're left
with a int_node* with only one PTR_TYPE_INTERNAL entry in it. After
note_tree_consolidate runs, root.a[4] now points to what used to be
pointed at by root.a[4].a[2].
Which means looking up for the note for the sha1 starting with 428 now
fails because there is nothing at root.a[4].a[2] anymore: there is only
root.a[4].a[4] and root.a[4].a[8], which don't match the expected
structure for the lookup.
So if all there is left in an int_node* is a PTR_TYPE_INTERNAL pointer,
we can't safely remove it. I think the same applies for PTR_TYPE_SUBTREE
pointers. IOW, only PTR_TYPE_NOTEs are safe to be moved to the parent
int_node*.
This doesn't have a practical effect on git because all that happens
after a remove_note is a write_notes_tree, which just iterates the entire
note tree, but this affects anything using libgit.a that would try to do
lookups after removing notes.
Signed-off-by: Mike Hommey <mh@glandium.org>
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.
* ab/doc-no-option-notation-fix:
doc: change erroneous --[no]-whatever into --[no-]whatever
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Change these two obvious typos to be in line with the rest of the
documentation, which uses the correct --[no-]whatever form.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Doc fix.
* ab/push-default-doc-fix:
push: mention "push.default=tracking" in the documentation
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Change the documentation for push.tracking=* to re-include a mention
of what "tracking" does.
The "tracking" option was renamed to "upstream" back in
53c4031 ("push.default: Rename 'tracking' to 'upstream'", 2011-02-16),
this section was then subsequently rewritten in 87a70e4 ("config doc:
rewrite push.default section", 2013-06-19) to remove any mention of
"tracking".
Maybe we should just warn or die nowadays if this option is in the
config, but I had some old config of mine use this option, I'd
forgotten that it was a synonym, and nothing in git's documentation
mentioned that.
That's bad, either we shouldn't support it at all, or we should
document what it does. This patch does the latter.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Doc fix.
* nd/commit-hook-doc-fix:
git-commit.txt: list post-rewrite in HOOKS section
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The hook was added in a86ed83cce (Merge branch 'tr/notes-display' -
2010-03-24), which updated githooks.txt but not git-commit.txt.
git-commit.txt was later updated in e858af6d50 (commit: document a
couple of options - 2012-06-08). Since this commit focused on command
line options, this section was probably forgotten.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The code to parse "git -c VAR=VAL cmd" and set configuration
variable for the duration of cmd had two small bugs, which have
been fixed.
This supersedes jc/config-case-cmdline topic that has been discarded.
* jc/config-case-cmdline-take-2:
config: use git_config_parse_key() in git_config_parse_parameter()
config: move a few helper functions up
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The parsing of one-shot assignments of configuration variables that
come from the command line historically was quite loose and allowed
anything to pass. It also downcased everything in the variable name,
even a three-level <section>.<subsection>.<variable> name in which
the <subsection> part must be treated in a case sensitive manner.
Existing git_config_parse_key() helper is used to parse the variable
name that comes from the command line, i.e. "git config VAR VAL",
and handles these details correctly. Replace the strbuf_tolower()
call in git_config_parse_parameter() with a call to it to correct
both issues. git_config_parse_key() does a bit more things that are
not necessary for the purpose of this codepath (e.g. it allocates a
separate buffer to return the canonicalized variable name because it
takes a "const char *" input), but we are not in a performance-critical
codepath here.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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git_config_parse_key() implements the validation and downcasing of
<section> and <variable> in "<section>[.<subsection>].<variable>"
configuration variable name. Move it (and helpers it uses) a bit up
so that it can be used by git_config_parse_parameter(), which is
used to check configuration settings that are given on the command
line (i.e. "git -c VAR=VAL cmd"), in a later patch.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The code to parse the command line "git grep <patterns>... <rev>
[[--] <pathspec>...]" has been cleaned up, and a handful of bugs
have been fixed (e.g. we used to check "--" if it is a rev).
* jk/grep-no-index-fix:
grep: treat revs the same for --untracked as for --no-index
grep: do not diagnose misspelt revs with --no-index
grep: avoid resolving revision names in --no-index case
grep: fix "--" rev/pathspec disambiguation
grep: re-order rev-parsing loop
grep: do not unnecessarily query repo for "--"
grep: move thread initialization a little lower
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git-grep has always disallowed grepping in a tree (as
opposed to the working directory) with both --untracked
and --no-index. But we traditionally did so by first
collecting the revs, and then complaining when any were
provided.
The --no-index option recently learned to detect revs
much earlier. This has two user-visible effects:
- we don't bother to resolve revision names at all. So
when there's a rev/path ambiguity, we always choose to
treat it as a path.
- likewise, when you do specify a revision without "--",
the error you get is "no such path" and not "--untracked
cannot be used with revs".
The rationale for doing this with --no-index is that it is
meant to be used outside a repository, and so parsing revs
at all does not make sense.
This patch gives --untracked the same treatment. While it
_is_ meant to be used in a repository, it is explicitly
about grepping the non-repository contents. Telling the user
"we found a rev, but you are not allowed to use revs" is
not really helpful compared to "we treated your argument as
a path, and could not find it".
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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If we are using --no-index, then our arguments cannot be
revs in the first place. Not only is it pointless to
diagnose them, but if we are not in a repository, we should
not be trying to resolve any names.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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We disallow the use of revisions with --no-index, but we
don't actually check and complain until well after we've
parsed the revisions.
This is the cause of a few problems:
1. We shouldn't be calling get_sha1() at all when we aren't
in a repository, as it might access the ref or object
databases. For now, this should generally just return
failure, but eventually it will become a BUG().
2. When there's a "--" disambiguator and you're outside a
repository, we'll complain early with "unable to resolve
revision". But we can give a much more specific error.
3. When there isn't a "--" disambiguator, we still do the
normal rev/path checks. This is silly, as we know we
cannot have any revs with --no-index. Everything we see
must be a path.
Outside of a repository this doesn't matter (since we
know it won't resolve), but inside one, we may complain
unnecessarily if a filename happens to also match a
refname.
This patch skips the get_sha1() call entirely in the
no-index case, and behaves as if it failed (with the
exception of giving a better error message).
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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If we see "git grep pattern rev -- file" then we apply the
usual rev/pathspec disambiguation rules: any "rev" before
the "--" must be a revision, and we do not need to apply the
verify_non_filename() check.
But there are two bugs here:
1. We keep a seen_dashdash flag to handle this case, but
we set it in the same left-to-right pass over the
arguments in which we parse "rev".
So when we see "rev", we do not yet know that there is
a "--", and we mistakenly complain if there is a
matching file.
We can fix this by making a preliminary pass over the
arguments to find the "--", and only then checking the rev
arguments.
2. If we can't resolve "rev" but there isn't a dashdash,
that's OK. We treat it like a path, and complain later
if it doesn't exist.
But if there _is_ a dashdash, then we know it must be a
rev, and should treat it as such, complaining if it
does not resolve. The current code instead ignores it
and tries to treat it like a path.
This patch fixes both bugs, and tries to comment the parsing
flow a bit better.
It adds tests that cover the two bugs, but also some related
situations (which already worked, but this confirms that our
fixes did not break anything).
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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We loop over the arguments, but every branch of the loop
hits either a "continue" or a "break". Surely we can make
this simpler.
The final conditional is:
if (arg is a rev) {
... handle rev ...
continue;
}
break;
We can rewrite this as:
if (arg is not a rev)
break;
... handle rev ...
That makes the flow a little bit simpler, and will make
things much easier to follow when we add more logic in
future patches.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When running a command of the form
git grep --no-index pattern -- path
in the absence of a Git repository, an error message will be printed:
fatal: BUG: setup_git_env called without repository
This is because "git grep" tries to interpret "--" as a rev. "git grep"
has always tried to first interpret "--" as a rev for at least a few
years, but this issue was upgraded from a pessimization to a bug in
commit 59332d1 ("Resurrect "git grep --no-index"", 2010-02-06), which
calls get_sha1 regardless of whether --no-index was specified. This bug
appeared to be benign until commit b1ef400 ("setup_git_env: avoid blind
fall-back to ".git"", 2016-10-20) when Git was taught to die in this
situation. (This "git grep" bug appears to be one of the bugs that
commit b1ef400 is meant to flush out.)
Therefore, always interpret "--" as signaling the end of options,
instead of trying to interpret it as a rev first.
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Originally, we set up the threads for grep before parsing
the non-option arguments. In 53b8d931b (grep: disable
threading in non-worktree case, 2011-12-12), the thread code
got bumped lower in the function because it now needed to
know whether we got any revision arguments.
That put a big block of code in between the parsing of revs
and the parsing of pathspecs, both of which share some loop
variables. That makes it harder to read the code than the
original, where the shared loops were right next to each
other.
Let's bump the thread initialization until after all of the
parsing is done.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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"git ls-remote" and "git archive --remote" are designed to work
without being in a directory under Git's control. However, recent
updates revealed that we randomly look into a directory called
.git/ without actually doing necessary set-up when working in a
repository. Stop doing so.
* jn/remote-helpers-with-git-dir:
remote helpers: avoid blind fall-back to ".git" when setting GIT_DIR
remote: avoid reading $GIT_DIR config in non-repo
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To push from or fetch to the current repository, remote helpers need
to know what repository that is. Accordingly, Git sets the GIT_DIR
environment variable to the path to the current repository when
invoking remote helpers.
There is a special case it does not handle: "git ls-remote" and "git
archive --remote" can be run to inspect a remote repository without
being run from any local repository. GIT_DIR is not useful in this
scenario:
- if we are not in a repository, we don't need to set GIT_DIR to
override an existing GIT_DIR value from the environment. If GIT_DIR
is present then we would be in a repository if it were valid and
would have called die() if it weren't.
- not setting GIT_DIR may cause a helper to do the usual discovery
walk to find the repository. But we know we're not in one, or we
would have found it ourselves. So in the worst case it may expend
a little extra effort to try to find a repository and fail (for
example, remote-curl would do this to try to find repository-level
configuration).
So leave GIT_DIR unset in this case. This makes GIT_DIR easier to
understand for remote helper authors and makes transport code less of
a special case for repository discovery.
Noticed using b1ef400e (setup_git_env: avoid blind fall-back to
".git", 2016-10-20) from 'next':
$ cd /tmp
$ git ls-remote https://kernel.googlesource.com/pub/scm/git/git
fatal: BUG: setup_git_env called without repository
Helped-by: Jeff King <peff@peff.net>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The "git ls-remote" command can be run outside of a
repository, but needs to look up configured remotes. The
config code is smart enough to handle this case itself, but
we also check the historical "branches" and "remotes" paths
in $GIT_DIR. The git_path() function causes us to blindly
look at ".git/remotes", even if we know we aren't in a git
repository.
For now, this is just an unlikely bug (you probably don't
have such a file if you're not in a repository), but it will
become more obvious once we merge b1ef400ee (setup_git_env:
avoid blind fall-back to ".git", 2016-10-20):
[now]
$ git ls-remote
fatal: No remote configured to list refs from.
[with b1ef400ee]
$ git ls-remote
fatal: BUG: setup_git_env called without repository
We can fix this by skipping these sources entirely when
we're outside of a repository.
The test is a little more complex than the demonstration
above. Rather than detect the correct behavior by parsing
the error message, we can actually set up a case where the
remote name we give is a valid repository, but b1ef400ee
would cause us to die in the configuration step.
This test doesn't fail now, but it future-proofs us for the
b1ef400ee change.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Code to read submodule.<name>.ignore config did not state the
variable name correctly when giving an error message diagnosing
misconfiguration.
* sb/submodule-config-parse-ignore-fix:
submodule-config: correct error reporting for invalid ignore value
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As 'var' contains the whole value we get error messages that repeat
the section and key currently:
warning: Invalid parameter 'true' for config option 'submodule.submodule.plugins/hooks.ignore.ignore'
Fix this by only giving the section name in the warning.
Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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"git push" had a handful of codepaths that could lead to a deadlock
when unexpected error happened, which has been fixed.
* jk/push-deadlock-regression-fix:
send-pack: report signal death of pack-objects
send-pack: read "unpack" status even on pack-objects failure
send-pack: improve unpack-status error messages
send-pack: use skip_prefix for parsing unpack status
send-pack: extract parsing of "unpack" response
receive-pack: fix deadlock when we cannot create tmpdir
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If our pack-objects sub-process dies of a signal, then it
likely didn't have a chance to write anything useful to
stderr. The user may be left scratching their head why the
push failed. Let's detect this situation and write something
to stderr.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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If the local pack-objects of a push fails, we'll tell the
user about it. But one likely cause is that the remote
index-pack stopped reading for some reason (because it
didn't like our input, or encountered another error). In
that case we'd expect the remote to report more details to
us via the "unpack ..." status line. However, the current
code just hangs up completely, and the user never sees it.
Instead, let's call receive_unpack_status(), which will
complain on stderr with whatever reason the remote told us.
Note that if our pack-objects fails because the connection
was severed or the remote just crashed entirely, then our
packet_read_line() call may fail with "the remote end hung
up unexpectedly". That's OK. It's a more accurate
description than what we get now (which is just "some refs
failed to push").
This should be safe from any deadlocks. At the point we make
this call we'll have closed the writing end of the
connection to the server (either by handing it off to
a pack-objects which exited, explicitly in the stateless_rpc
case, or by doing a half-duplex shutdown for a socket). So
there should be no chance that the other side is waiting
for the rest of our pack-objects input.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When the remote tells us that the "unpack" step failed, we
show an error message. However, unless you are familiar with
the internals of send-pack and receive-pack, it was not
clear that this represented an error on the remote side.
Let's re-word to make that more obvious.
Likewise, when we got an unexpected packet from the other
end, we complained with a vague message but did not actually
show the packet. Let's fix that.
And finally, neither message was marked for translation. The
message from the remote probably won't be translated, but
there's no reason we can't do better for the local half.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This avoids repeating ourselves, and the use of magic
numbers.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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After sending the pack, we call receive_status() which gets
both the "unpack" line and the ref status. Let's break these
into two functions so we can call the first part
independently.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The err_fd descriptor passed to the unpack() function is
intended to be handed off to the child index-pack, and our
async muxer will read until it gets EOF. However, if we
encounter an error before handing off the descriptor, we
must manually close(err_fd). Otherwise we will be waiting
for our muxer to finish, while the muxer is waiting for EOF
on err_fd.
We fixed an identical deadlock already in 49ecfa13f
(receive-pack: close sideband fd on early pack errors,
2013-04-19). But since then, the function grew a new
early-return in 722ff7f87 (receive-pack: quarantine objects
until pre-receive accepts, 2016-10-03), when we fail to
create a temporary directory. This return needs the same
treatment.
Reported-by: Horst Schirmeier <horst@schirmeier.com>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Map both old addresses to the new, hopefully more permanent one.
Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net>
Signed-off-by: Michael J Gruber <git@grubix.eu>
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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"Cc:" on the trailer part does not have to conform to RFC strictly,
unlike in the e-mail header. "git send-email" has been updated to
ignore anything after '>' when picking addresses, to allow non-address
cruft like " # stable 4.4" after the address.
* jh/send-email-one-cc:
send-email: only allow one address per body tag
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Adding comments after a tag in the body is a common practise (e.g. in
the Linux kernel) and git-send-email has been supporting this for years
by removing any trailing cruft after the address.
After some recent changes, any trailing comment is now instead appended
to the recipient name (with some random white space inserted) resulting
in undesirable noise in the headers, for example:
CC: "# 3 . 3 . x : 1b9508f : sched : Rate-limit newidle" <stable@vger.kernel.org>
Revert to the earlier behaviour of discarding anything after the (first)
address in a tag while parsing the body.
Note that multiple addresses after are still allowed after a command
line switch (and in a CC header field).
Also note that --suppress-cc=self was never honoured when using multiple
addresses in a tag.
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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A test that creates a confusing branch whose name is HEAD has been
corrected not to do so.
* jk/t6300-cleanup:
t6300: avoid creating refs/heads/HEAD
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In one test, we use "git checkout --orphan HEAD" to create
an unborn branch. Confusingly, the resulting branch is named
"refs/heads/HEAD". The original probably meant something
like:
git checkout --orphan orphaned-branch HEAD
Let's just use "orphaned-branch" here to make this less
confusing. Putting HEAD in the second argument is already
implied.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The code that parses header fields in the commit object has been
updated for (micro)performance and code hygiene.
* rs/commit-parsing-optim:
commit: don't check for space twice when looking for header
commit: be more precise when searching for headers
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Both standard_header_field() and excluded_header_field() check if
there's a space after the buffer that's handed to them. We already
check in the caller if that space is present. Don't bother calling
the functions if it's missing, as they are guaranteed to return 0 in
that case, and remove the now redundant checks from them.
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Search for a space character only within the current line in
read_commit_extra_header_lines() instead of searching in the whole
buffer (and possibly beyond, if it's not NUL-terminated) and then
discarding any results after the end of the current line.
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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"git show-branch" expected there were only very short branch names
in the repository and used a fixed-length buffer to hold them
without checking for overflow.
* jk/show-branch-lift-name-len-limit:
show-branch: use skip_prefix to drop magic numbers
show-branch: store resolved head in heap buffer
show-branch: drop head_len variable
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We make several starts_with() calls, only to advance
pointers. This is exactly what skip_prefix() is for, which
lets us avoid manually-counted magic numbers.
Helped-by: Pranit Bauva <pranit.bauva@gmail.com>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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We resolve HEAD and copy the result to a fixed-size buffer
with memcpy, never checking that it actually fits. This bug
dates back to 8098a178b (Add git-symbolic-ref, 2005-09-30).
Before that we used readlink(), which took a maximum buffer
size.
We can fix this by using resolve_refdup(), which duplicates
the buffer on the heap. That also lets us just check
for a NULL pointer to see if we have resolved HEAD, and
drop the extra head_p variable.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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We copy the result of resolving HEAD into a buffer and keep
track of its length. But we never actually use the length
for anything besides the copy. Let's stop passing it around.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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A caller of tempfile API that uses stdio interface to write to
files may ignore errors while writing, which is detected when
tempfile is closed (with a call to ferror()). By that time, the
original errno that may have told us what went wrong is likely to
be long gone and was overwritten by an irrelevant value.
close_tempfile() now resets errno to EIO to make errno at least
predictable.
* jk/tempfile-ferror-fclose-confusion:
tempfile: set errno to a known value before calling ferror()
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In close_tempfile(), we return an error if ferror()
indicated a previous failure, or if fclose() failed. In the
latter case, errno is set and it is useful for callers to
report it.
However, if _only_ ferror() triggers, then the value of
errno is based on whatever syscall happened to last fail,
which may not be related to our filehandle at all. A caller
cannot tell the difference between the two cases, and may
use "die_errno()" or similar to report a nonsense errno value.
One solution would be to actually pass back separate return
values for the two cases, so a caller can write a more
appropriate message for each case. But that makes the
interface clunky.
Instead, let's just set errno to the generic EIO in this case.
That's not as descriptive as we'd like, but at least it's
predictable. So it's better than the status quo in all cases
but one: when the last syscall really did involve a failure
on our filehandle, we'll be wiping that out. But that's a
fragile thing for us to rely on.
In any case, we'll let the errno result from fclose() take
precedence over our value, as we know that's recent and
accurate (and many I/O errors will persist through the
fclose anyway).
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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"git remote rm X", when a branch has remote X configured as the
value of its branch.*.remote, tried to remove branch.*.remote and
branch.*.merge and failed if either is unset.
* rl/remote-allow-missing-branch-name-merge:
remote: ignore failure to remove missing branch.<name>.merge
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It is not all too unusual for a branch to use "branch.<name>.remote"
without "branch.<name>.merge". You may be using the 'push.default'
configuration set to 'current', for example, and do
$ git checkout -b side colleague/side
$ git config branch.side.remote colleague
However, "git remote rm" to remove the remote used in such a manner
fails with
"fatal: could not unset 'branch.<name>.merge'"
because it assumes that a branch that has .remote defined must also
have .merge defined. Detect the "cannot unset because it is not set
to begin with" case and ignore it.
Signed-off-by: Ross Lagerwall <rosslagerwall@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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A "gc.log" file left by a backgrounded "gc --auto" disables further
automatic gc; it has been taught to run at least once a day (by
default) by ignoring a stale "gc.log" file that is too old.
* dt/gc-ignore-old-gc-logs:
gc: ignore old gc.log files
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A server can end up in a state where there are lots of unreferenced
loose objects (say, because many users are doing a bunch of rebasing
and pushing their rebased branches). Running "git gc --auto" in
this state would cause a gc.log file to be created, preventing
future auto gcs, causing pack files to pile up. Since many git
operations are O(n) in the number of pack files, this would lead to
poor performance.
Git should never get itself into a state where it refuses to do any
maintenance, just because at some point some piece of the maintenance
didn't make progress.
Teach Git to ignore gc.log files which are older than (by default)
one day old, which can be tweaked via the gc.logExpiry configuration
variable. That way, these pack files will get cleaned up, if
necessary, at least once per day. And operators who find a need for
more-frequent gcs can adjust gc.logExpiry to meet their needs.
There is also some cleanup: a successful manual gc, or a
warning-free auto gc with an old log file, will remove any old
gc.log files.
It might still happen that manual intervention is required
(e.g. because the repo is corrupt), but at the very least it won't
be because Git is too dumb to try again.
Signed-off-by: David Turner <dturner@twosigma.com>
Helped-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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