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34987447
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2020-06-30T10:13:26
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refdb: avoid unlimited spinning in case of symref cycles
To determine whether another reflog entry needs to be written for HEAD
on a reference update, we need to see whether HEAD directly or
indirectly points to the reference we're updating. The resolve logic is
currently completely unbounded except an error occurs, which effectively
means that we'd be spinning forever in case we have a symref loop in the
repository refdb.
Let's fix the issue by using `git_refdb_resolve` instead, which is
always bounded.
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cf7dd05b
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2020-06-30T13:26:05
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refdb: return resolved symbolic refs pointing to nonexistent refs
In some cases, resolving references requires us to also know about the
final symbolic reference that's pointing to a nonexistent branch, e.g.
in an empty repository where the main branch is yet unborn but HEAD
already points to it. Right now, the resolving logic is thus split up
into two, where one is the new refdb implementation and the second one
is an ad-hoc implementation inside "refs.c".
Let's extend `git_refdb_resolve` to also return such final dangling
references pointing to nonexistent branches so we can deduplicate the
resolving logic.
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c54f40e4
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2020-06-30T09:28:12
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refs: move resolving of references into the refdb
Resolving of symbolic references is currently implemented inside the
"refs" layer. As a result, it's hard to call this function from
low-level parts that only have a refdb available, but no repository, as
the "refs" layer always operates on the repository-level. So let's move
the function into the generic "refdb" implementation to lift this
restriction.
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1f39593b
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2020-06-30T08:53:59
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refdb: extract function to check whether to append HEAD to the reflog
The logic to determine whether a reflog entry should be for the HEAD
reference is non-trivial. Currently, the only user of this is the
filesystem-based refdb, but with the advent of the reftable refdb we're
going to add a second user that's interested in having the same
behaviour.
Let's pull out a new function that checks whether a given reference
should cause a entry to be written to the HEAD reflog as a preparatory
step.
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e02478b1
|
2020-06-05T08:17:03
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refdb: extract function to check whether a reflog should be written
The logic to determine whether a reflog should be written is
non-trivial. Currently, the only user of this is the filesystem-based
refdb, but with the advent of the reftable refdb we're going to add a
second user that's interested in having the same behaviour.
Let's pull out a new function that checks whether a given reference
should cause a reflog to be written as a preparatory step.
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baf411e7
|
2019-02-02T19:00:45
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refdb: ensure all mandatory functions are provided at setup time
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c2cf9844
|
2019-02-02T19:00:43
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|
refdb: check the version of the backend we're about to set
|
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f673e232
|
2018-12-27T13:47:34
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|
git_error: use new names in internal APIs and usage
Move to the `git_error` name in the internal API for error-related
functions.
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0c7f49dd
|
2017-06-30T13:39:01
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Make sure to always include "common.h" first
Next to including several files, our "common.h" header also declares
various macros which are then used throughout the project. As such, we
have to make sure to always include this file first in all
implementation files. Otherwise, we might encounter problems or even
silent behavioural differences due to macros or defines not being
defined as they should be. So in fact, our header and implementation
files should make sure to always include "common.h" first.
This commit does so by establishing a common include pattern. Header
files inside of "src" will now always include "common.h" as its first
other file, separated by a newline from all the other includes to make
it stand out as special. There are two cases for the implementation
files. If they do have a matching header file, they will always include
this one first, leading to "common.h" being transitively included as
first file. If they do not have a matching header file, they instead
include "common.h" as first file themselves.
This fixes the outlined problems and will become our standard practice
for header and source files inside of the "src/" from now on.
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909d5494
|
2016-12-29T12:25:15
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giterr_set: consistent error messages
Error messages should be sentence fragments, and therefore:
1. Should not begin with a capital letter,
2. Should not conclude with punctuation, and
3. Should not end a sentence and begin a new one
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ce5553d4
|
2016-03-10T22:01:09
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refdb: bubble up locked files on the read side
On Windows we can find locked files even when reading a reference or the
packed-refs file. Bubble up the error in this case as well to allow
callers on Windows to retry more intelligently.
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d3b29fb9
|
2015-10-01T00:50:37
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|
refdb and odb backends must provide `free` function
As refdb and odb backends can be allocated by client code, libgit2
can’t know whether an alternative memory allocator was used, and thus
should not try to call `git__free` on those objects.
Instead, odb and refdb backend implementations must always provide
their own `free` functions to ensure memory gets freed correctly.
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ab8d9242
|
2014-06-28T06:39:38
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|
Introduce reference transactions
A transaction allows you to lock multiple references and set up changes
for them before applying the changes all at once (or as close as the
backend supports).
This can be used for replication purposes, or for making sure some
operations run when the reference is locked and thus cannot be changed.
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bc91347b
|
2014-04-30T11:16:31
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|
Fix remaining init_options inconsistencies
There were a couple of "init_opts()" functions a few more cases
of structure initialization that I somehow missed.
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b9f81997
|
2014-03-05T21:49:23
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|
Added function-based initializers for every options struct.
The basic structure of each function is courtesy of arrbee.
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7ee8c7e6
|
2014-02-05T11:07:34
|
|
refs: placeholder conditional delete
We don't actually pass the old value yet.
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91123661
|
2014-02-04T22:04:00
|
|
refdb: add conditional symbolic updates
Add a parameter to the backend to allow checking for the old symbolic
target.
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9b148098
|
2013-12-18T19:58:16
|
|
refs: conditional ref updates
Allow updating references if the old value matches the given one.
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8d5ec910
|
2013-11-23T14:13:01
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|
refs: expose a way to ensure a ref has a log
Sometimes (e.g. stash) we want to make sure that a log will be written,
even if it's not in one of the standard locations. Let's make that
easier.
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f2105129
|
2013-11-23T14:39:53
|
|
refs: expose has_log() on the backend
The frontend used to look at the file directly, but that's obviously not
the right thing to do. Expose it on the backend and use that function
instead.
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a57dd3b7
|
2013-11-13T18:15:20
|
|
reflog: integrate into the ref writing
Whenever a reference is created or updated, we need to write to the
reflog regardless of whether the user gave us a message, so we shouldn't
leave that to the ref frontend, but integrate it into the backend.
This also eliminates the race between ref update and writing to the
reflog, as we protect the reflog with the ref lock.
As an additional benefit, this reflog append on the backend happens by
appending to the file instead of parsing and rewriting it.
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110df893
|
2013-11-13T13:36:37
|
|
refdb: add a `message` parameter for appending to the log
This is as yet unused.
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|
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b976f3c2
|
2013-08-19T13:01:49
|
|
reflog: move the reflog implementation into refdb_fs
References and their logs are logically coupled, let's make it so in
the code by moving the fs-based reflog implementation to live next to
the fs-based refs one.
As part of the change, make the function take names rather than
references, as only the names are relevant when looking up and
handling reflogs.
|
|
e3f3868a
|
2013-09-24T11:04:14
|
|
'del' instead of 'delete' for the poor C++ users
|
|
6de9b2ee
|
2013-06-12T21:10:33
|
|
util: It's called `memzero`
|
|
|
eb58e2d0
|
2013-06-12T21:05:48
|
|
Merge remote-tracking branch 'arrbee/minor-paranoia' into development
|
|
|
3e9e6cda
|
2013-06-07T09:54:33
|
|
Add safe memset and use it
This adds a `git__memset` routine that will not be optimized away
and updates the places where I memset() right before a free() call
to use it.
|
|
|
f658dc43
|
2013-05-31T14:09:58
|
|
Zero memory for major objects before freeing
By zeroing out the memory when we free larger objects (i.e. those
that serve as collections of other data, such as repos, odb, refdb),
I'm hoping that it will be easier for libgit2 bindings to find
errors in their object management code.
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|
|
979f75d8
|
2013-05-30T17:19:43
|
|
Refcounting
|
|
|
4e6e2ff2
|
2013-05-30T03:47:10
|
|
...Aaaand this works
|
|
|
ec24e542
|
2013-05-29T22:47:37
|
|
What are the chances, really
|
|
|
56960b83
|
2013-05-28T20:47:55
|
|
Liike this
|
|
|
c58cac12
|
2013-05-04T18:06:14
|
|
Introduce a glob-filtering iterator
If the backend doesn't provide support for it, the matching is done in
refdb on top of a normal iterator.
|
|
|
2b562c3a
|
2013-05-04T16:32:58
|
|
refs: remove the OID/SYMBOLIC filtering
Nobody should ever be using anything other than ALL at this level, so
remove the option altogether.
As part of this, git_reference_foreach_glob is now implemented in the
frontend using an iterator. Backends will later regain the ability of
doing the glob filtering in the backend.
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|
|
51fc5e89
|
2013-05-04T15:16:55
|
|
Make sure the ref iterator works in an repo without physical presence
|
|
|
4def7035
|
2013-03-02T19:31:03
|
|
refs: introduce an iterator
This allows us to get a list of reference names in a loop instead of callbacks.
|
|
|
21ca0451
|
2013-04-21T12:52:17
|
|
Move git_reference__alloc to include/git2/sys
Create a new include/git2/sys/refs.h and move the reference alloc
functions there. Also fix some documentation issues and some
minor code cleanups.
|
|
|
4dcd8780
|
2013-04-19T17:17:44
|
|
Move refdb_backend to include/git2/sys
This moves most of the refdb stuff over to the include/git2/sys
directory, with some minor shifts in function organization.
While I was making the necessary updates, I also removed the
trailing whitespace in a few files that I modified just because I
was there and it was bugging me.
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|
|
4e4eab52
|
2013-04-19T18:19:53
|
|
alloc doesn't take a refdb; git_refdb_free nicely in the tests
|
|
|
7ebc249c
|
2013-04-04T11:38:17
|
|
dec refcount on refdb instead of always freeing
|
|
|
d00d5464
|
2013-03-01T15:37:33
|
|
immutable references and a pluggable ref database
|