| Commit message (Collapse) | Author | Age | Files | Lines |
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This value, which is stashed in the last byte of an object_id hash,
gets handed around a lot. So add a sanity check before using it in
`load_subtree()`.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* `prefix_len`
* `path_len`
* `i`
It's good hygiene.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Now that `get_oid_hex_segment()` does less, it makes sense to rename
it and simplify its semantics:
* Instead of a `hex_len` parameter, which was the number of hex
characters (and had to be even), use a `len` parameter, which is the
number of resulting bytes. This removes then need for the check that
`hex_len` is even and to divide it by two to determine the number of
bytes. For good hygiene, declare the `len` parameter to be `size_t`
instead of `unsigned int`.
* Change the order of the arguments to the more traditional (dst,
src, len).
* Rename the function to `hex_to_bytes()`.
* Remove a loop variable: just count `len` down instead.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Remove the feature of `get_oid_hex_segment()` that it pads the rest of
the `oid` argument with zeros. Instead, do this at the caller who
needs it.
This makes the functionality of this function more coherent and
removes the need for its `oid_len` argument.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Write the length into `object_oid` (before copying) rather than
`l->key_oid` (after copying). Then combine some code from the two `if`
blocks.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Nobody cares about the return value of get_oid_hex_segment() except to
check whether it failed. So just return 0 on success.
And while we're updating its docstring, update it for some argument
renaming that happened a while ago.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The old code converted any entry whose path constituted a full SHA-1
as a leaf node, without regard for the type of the entry. But only
blobs can be notes. So treat entries whose paths *look like* notes
paths but that are not blobs as non-notes.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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If an entry is not a tree entry, then it cannot possibly be an
internal node. But the old code checked this condition only after
allocating a leaf_node object and therefore leaked that memory.
Instead, check before even entering this branch of the code.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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There are only two legitimate notes path components:
* A hexadecimal string that fills the rest of the SHA-1
* A two-digit hexadecimal string that constitutes another internal
node.
So handle those two cases at the top level, and reject others as
non-notes without trying to parse them. The logic separation also
simplifies upcoming changes.
This prevents us from leaking memory for a leaf_node in the case of
wrong-sized paths. There are still memory leaks in this code; they will
be fixed in upcoming commits.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This comment was added in 851c2b3791 (Teach notes code to properly
preserve non-notes in the notes tree, 2010-02-13) when the
corresponding code was added. But I believe it was incorrect even
then. The condition `path_len != 2` a dozen lines up prevents a path
like "dead/beef" from being converted to "de/ad/beef", and indeed the
test added in commit 851c2b3 verifies that this case works correctly.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Declare the variables inside the loop, to make it more obvious that
their values are not carried across loop iterations.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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At this point in the code, len is *always* <= 20.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Put parentheses around sha1. Otherwise it could fail for something
like
GET_NIBBLE(n, (unsigned char *)data);
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
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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A test update.
* jt/t1450-fsck-corrupt-packfile:
tests: ensure fsck fails on corrupt packfiles
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t1450-fsck.sh does not have a test that checks fsck's behavior when a
packfile is invalid. It does have a test for when an object in a
packfile is invalid, but in that test, the packfile itself is valid.
Add such a test.
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Code clean-up.
* jb/t8008-cleanup:
t8008: rely on rev-parse'd HEAD instead of sha1 value
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Remove hard coded sha1 values, obtain the values using
'git rev-parse HEAD' which should be future proof regardless
of the hash function used.
Additionally future-proof the test by hard coding the
abbreviation length of the hash.
Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Code cleanup.
* jt/subprocess-handshake:
sub-process: refactor handshake to common function
Documentation: migrate sub-process docs to header
convert: add "status=delayed" to filter process protocol
convert: refactor capabilities negotiation
convert: move multiple file filter error handling to separate function
convert: put the flags field before the flag itself for consistent style
t0021: write "OUT <size>" only on success
t0021: make debug log file name configurable
t0021: keep filter log files on comparison
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Refactor, into a common function, the version and capability negotiation
done when invoking a long-running process as a clean or smudge filter.
This will be useful for other Git code that needs to interact similarly
with a long-running process.
As you can see in the change to t0021, this commit changes the error
message reported when the long-running process does not introduce itself
with the expected "server"-terminated line. Originally, the error
message reports that the filter "does not support filter protocol
version 2", differentiating between the old single-file filter protocol
and the new multi-file filter protocol - I have updated it to something
more generic and useful.
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Move the documentation for the sub-process API from a separate txt file
to its header file.
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* ls/filter-process-delayed:
convert: add "status=delayed" to filter process protocol
convert: refactor capabilities negotiation
convert: move multiple file filter error handling to separate function
convert: put the flags field before the flag itself for consistent style
t0021: write "OUT <size>" only on success
t0021: make debug log file name configurable
t0021: keep filter log files on comparison
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Some `clean` / `smudge` filters may require a significant amount of
time to process a single blob (e.g. the Git LFS smudge filter might
perform network requests). During this process the Git checkout
operation is blocked and Git needs to wait until the filter is done to
continue with the checkout.
Teach the filter process protocol, introduced in edcc8581 ("convert: add
filter.<driver>.process option", 2016-10-16), to accept the status
"delayed" as response to a filter request. Upon this response Git
continues with the checkout operation. After the checkout operation Git
calls "finish_delayed_checkout" which queries the filter for remaining
blobs. If the filter is still working on the completion, then the filter
is expected to block. If the filter has completed all remaining blobs
then an empty response is expected.
Git has a multiple code paths that checkout a blob. Support delayed
checkouts only in `clone` (in unpack-trees.c) and `checkout` operations
for now. The optimization is most effective in these code paths as all
files of the tree are processed.
Signed-off-by: Lars Schneider <larsxschneider@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The code to negotiate long running filter capabilities was very
repetitive for new capabilities. Replace the repetitive conditional
statements with a table-driven approach. This is useful for the
subsequent patch 'convert: add "status=delayed" to filter process
protocol'.
Suggested-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Lars Schneider <larsxschneider@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Refactoring the filter error handling is useful for the subsequent patch
'convert: add "status=delayed" to filter process protocol'.
In addition, replace the parentheses around the empty "if" block with a
single semicolon to adhere to the Git style guide.
Signed-off-by: Lars Schneider <larsxschneider@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Suggested-by: Jeff King <peff@peff.net>
Signed-off-by: Lars Schneider <larsxschneider@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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"rot13-filter.pl" always writes "OUT <size>" to the debug log at the end
of a response.
This works perfectly for the existing responses "abort", "error", and
"success". A new response "delayed", that will be introduced in a
subsequent patch, accepts the input without giving the filtered result
right away. At this point we cannot know the size of the response.
Therefore, we do not write "OUT <size>" for "delayed" responses.
To simplify the code we do not write "OUT <size>" for "abort" and
"error" responses either as their size is always zero.
Signed-off-by: Lars Schneider <larsxschneider@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The "rot13-filter.pl" helper wrote its debug logs always to "rot13-filter.log".
Make this configurable by defining the log file as first parameter of
"rot13-filter.pl".
This is useful if "rot13-filter.pl" is configured multiple times similar to the
subsequent patch 'convert: add "status=delayed" to filter process protocol'.
Signed-off-by: Lars Schneider <larsxschneider@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The filter log files are modified on comparison. That might be
unexpected by the caller. It would be even undesirable if the caller
wants to reuse the original log files.
Address these issues by using temp files for modifications. This is
useful for the subsequent patch 'convert: add "status=delayed" to
filter process protocol'.
Signed-off-by: Lars Schneider <larsxschneider@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Code cleanup.
* dc/fmt-merge-msg-microcleanup:
fmt-merge-msg: fix coding style
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Align argument list and place opening brace on its own line.
Signed-off-by: Dimitrios Christidis <dimitrios@christidis.me>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Doc update.
* ah/doc-wserrorhighlight:
doc: add missing values "none" and "default" for diff.wsErrorHighlight
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The values have eluded documentation so far. While at it streamline
the wording by grouping relevant parts together.
Signed-off-by: Andreas Heiduk <asheiduk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Code cleanup.
* cc/ref-is-hidden-microcleanup:
refs: use skip_prefix() in ref_is_hidden()
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This is shorter, makes the logic a bit easier to follow, and is
perhaps a bit faster too.
The logic is to make the final decision only when "subject" is there,
its early part matches "match", and the match is at the slash
boundary (or the whole thing).
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Reviewed-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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API fix.
* js/run-process-parallel-api-fix:
run_processes_parallel: change confusing task_cb convention
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By declaring the task_cb parameter of type `void **`, the signature of
the get_next_task method suggests that the "task-specific cookie" can be
defined in that method, and the signatures of the start_failure and of
the task_finished methods declare that parameter of type `void *`,
suggesting that those methods are mere users of said cookie.
That convention makes a total lot of sense, because the tasks are pretty
much dead when one of the latter two methods is called: there would be
little use to reset that cookie at that point because nobody would be
able to see the change afterwards.
However, this is not what the code actually does. For all three methods,
it passes the *address* of pp->children[i].data.
As reasoned above, this behavior makes no sense. So let's change the
implementation to adhere to the convention suggested by the signatures.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Acked-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Code clean-up.
* rs/pack-objects-pbase-cleanup:
pack-objects: remove unnecessary NULL check
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If done_pbase_paths is NULL then done_pbase_paths_num must be zero and
done_pbase_path_pos() returns -1 without accessing the array, so the
check is not necessary.
If the invariant was violated then the check would make sure we keep
on going and allocate the necessary amount of memory in the next
ALLOC_GROW call. That sounds nice, but all array entries except for
one would contain garbage data.
If the invariant was violated without the check we'd get a segfault in
done_pbase_path_pos(), i.e. an observable crash, alerting us of the
presence of a bug.
Currently there is no such bug: Only the functions check_pbase_path()
and cleanup_preferred_base() change pointer and counter, and both make
sure to keep them in sync. Get rid of the check anyway to allow us to
see if later changes introduce such a defect, and to simplify the code.
Detected by Coverity Scan.
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Code clean-up.
* jt/fsck-code-cleanup:
fsck: cleanup unused variable
object: remove "used" field from struct object
fsck: remove redundant parse_tree() invocation
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Remove the unused variable "heads" from cmd_fsck().
This variable was made unused in commit c3271a0 ("fsck: do not fallback
"git fsck <bogus>" to "git fsck"", 2017-01-17).
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Reviewed-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The "used" field in struct object is only used by builtin/fsck. Remove
that field and modify builtin/fsck to use a flag instead.
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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If obj->type == OBJ_TREE, an invocation of fsck_walk() will invoke
parse_tree() and return quickly if that returns nonzero, so it is of no
use for traverse_one_object() to invoke parse_tree() in this situation
before invoking fsck_walk(). Remove that code.
The behavior of traverse_one_object() is changed slightly in that it now
returns -1 instead of 1 in the case that parse_tree() fails, but this is
not an issue because its only caller (traverse_reachable) does not care
about the value as long as it is nonzero.
This code was introduced in commit 271b8d2 ("builtin-fsck: move away
from object-refs to fsck_walk", 2008-02-25). The same issue existed in
that commit.
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Code clean-up.
* rs/stat-data-unaligned-reads-fix:
dir: support platforms that require aligned reads
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The untracked cache is stored on disk by concatenating its memory
structures without any padding. Consequently some of the structs are
not aligned at a particular boundary when the whole extension is read
back in one go. That's only OK on platforms without strict alignment
requirements, or for byte-aligned data like strings or hash values.
Decode struct ondisk_untracked_cache carefully from the extension
blob by using explicit pointer arithmetic with offsets, avoiding
alignment issues. Use char pointers for passing stat_data objects to
stat_data_from_disk(), and use memcpy(3) in that function to get the
contents into a properly aligned struct, then perform the byte-order
adjustment in place there.
Found with Clang's UBSan.
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Code clean-up.
* rs/move-array:
ls-files: don't try to prune an empty index
apply: use COPY_ARRAY and MOVE_ARRAY in update_image()
use MOVE_ARRAY
add MOVE_ARRAY
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Exit early when asked to prune an index that contains no entries to
begin with. This avoids pointer arithmetic on istate->cache, which is
possibly NULL in that case.
Found with Clang's UBSan.
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Simplify the code by using the helper macros COPY_ARRAY and MOVE_ARRAY,
which also makes them more robust in the case we copy or move no lines,
as they allow using NULL points in that case, while memcpy(3) and
memmove(3) don't.
Found with Clang's UBSan.
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Simplify the code for moving members inside of an array and make it more
robust by using the helper macro MOVE_ARRAY. It calculates the size
based on the specified number of elements for us and supports NULL
pointers when that number is zero. Raw memmove(3) calls with NULL can
cause the compiler to (over-eagerly) optimize out later NULL checks.
This patch was generated with contrib/coccinelle/array.cocci and spatch
(Coccinelle).
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Similar to COPY_ARRAY (introduced in 60566cbb58), add a safe and
convenient helper for moving potentially overlapping ranges of array
entries. It infers the element size, multiplies automatically and
safely to get the size in bytes, does a basic type safety check by
comparing element sizes and unlike memmove(3) it supports NULL
pointers iff 0 elements are to be moved.
Also add a semantic patch to demonstrate the helper's intended usage.
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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