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Move the running of the 'post-checkout' hook away from run-command.h
to the new hook.h library, except in the case of
builtin/worktree.c. That special-case will be handled in a subsequent
commit.
Signed-off-by: Emily Shaffer <emilyshaffer@google.com>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Acked-by: Emily Shaffer <emilyshaffer@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Traditionally, unpack_trees_options->reset was used to signal that it
was okay to delete any untracked files in the way. This was used by
`git read-tree --reset`, but then started appearing in other places as
well. However, many of the other uses should not be deleting untracked
files in the way. Change this value to an enum so that a value of 1
(i.e. "true") can be split into two:
UNPACK_RESET_PROTECT_UNTRACKED,
UNPACK_RESET_OVERWRITE_UNTRACKED
In order to catch accidental misuses (i.e. where folks call it the way
they traditionally used to), define the special enum value of
UNPACK_RESET_INVALID = 1
which will trigger a BUG().
Modify existing callers so that
read-tree --reset
reset --hard
checkout --force
continue using the UNPACK_RESET_OVERWRITE_UNTRACKED logic, while other
callers, including
am
checkout without --force
stash (though currently dead code; reset always had a value of 0)
numerous callers from rebase/sequencer to reset_head()
will use the new UNPACK_RESET_PROTECT_UNTRACKED value.
Also, note that it has been reported that 'git checkout <treeish>
<pathspec>' currently also allows overwriting untracked files[1]. That
case should also be fixed, but it does not use unpack_trees() and thus
is outside the scope of the current changes.
[1] https://lore.kernel.org/git/15dad590-087e-5a48-9238-5d2826950506@gmail.com/
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Change several commands to remove ignored files by default when they are
in the way. Since some commands (checkout, merge) take a
--no-overwrite-ignore option to allow the user to configure this, and it
may make sense to add that option to more commands (and in the case of
merge, actually plumb that configuration option through to more of the
backends than just the fast-forwarding special case), add little
comments about where such flags would be used.
Incidentally, this fixes a test failure in t7112.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Currently, every caller of unpack_trees() that wants to ensure ignored
files are overwritten by default needs to:
* allocate unpack_trees_options.dir
* flip the DIR_SHOW_IGNORED flag in unpack_trees_options.dir->flags
* call setup_standard_excludes
AND then after the call to unpack_trees() needs to
* call dir_clear()
* deallocate unpack_trees_options.dir
That's a fair amount of boilerplate, and every caller uses identical
code. Make this easier by instead introducing a new boolean value where
the default value (0) does what we want so that new callers of
unpack_trees() automatically get the appropriate behavior. And move all
the handling of unpack_trees_options.dir into unpack_trees() itself.
While preserve_ignored = 0 is the behavior we feel is the appropriate
default, we defer fixing commands to use the appropriate default until a
later commit. So, this commit introduces several locations where we
manually set preserve_ignored=1. This makes it clear where code paths
were previously preserving ignored files when they should not have been;
a future commit will flip these to instead use a value of 0 to get the
behavior we want.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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setup_unpack_trees_porcelain() populates various fields on
unpack_tree_opts, we need to call clear_unpack_trees_porcelain() to
avoid leaking them. Specifically, we used to leak
unpack_tree_opts.msgs_to_free.
We have to do this in leave_reset_head because there are multiple
scenarios where unpack_tree_opts has already been configured, followed
by a 'goto leave_reset_head'. But we can also 'goto leave_reset_head'
prior to having initialised unpack_tree_opts via memset(..., 0, ...).
Therefore we also move unpack_tree_opts initialisation to the start of
reset_head(), and convert it to use brace initialisation - which
guarantees that we can never clear an uninitialised unpack_tree_opts.
clear_unpack_tree_opts() is always safe to call as long as
unpack_tree_opts is at least zero-initialised, i.e. it does not depend
on a previous call to setup_unpack_trees_porcelain().
LSAN output from t0021:
Direct leak of 192 byte(s) in 1 object(s) allocated from:
#0 0x49ab49 in realloc ../projects/compiler-rt/lib/asan/asan_malloc_linux.cpp:164:3
#1 0xa721e5 in xrealloc wrapper.c:126:8
#2 0x9f7861 in strvec_push_nodup strvec.c:19:2
#3 0x9f7861 in strvec_pushf strvec.c:39:2
#4 0xa43e14 in setup_unpack_trees_porcelain unpack-trees.c:129:3
#5 0x97e011 in reset_head reset.c:53:2
#6 0x61dfa5 in cmd_rebase builtin/rebase.c:1991:9
#7 0x4ce83e in run_builtin git.c:475:11
#8 0x4ccafe in handle_builtin git.c:729:3
#9 0x4cb01c in run_argv git.c:818:4
#10 0x4cb01c in cmd_main git.c:949:19
#11 0x6b3f3d in main common-main.c:52:11
#12 0x7fa8addf3349 in __libc_start_main (/lib64/libc.so.6+0x24349)
Indirect leak of 147 byte(s) in 1 object(s) allocated from:
#0 0x49ab49 in realloc ../projects/compiler-rt/lib/asan/asan_malloc_linux.cpp:164:3
#1 0xa721e5 in xrealloc wrapper.c:126:8
#2 0x9e8d54 in strbuf_grow strbuf.c:98:2
#3 0x9e8d54 in strbuf_vaddf strbuf.c:401:3
#4 0x9f7774 in strvec_pushf strvec.c:36:2
#5 0xa43e14 in setup_unpack_trees_porcelain unpack-trees.c:129:3
#6 0x97e011 in reset_head reset.c:53:2
#7 0x61dfa5 in cmd_rebase builtin/rebase.c:1991:9
#8 0x4ce83e in run_builtin git.c:475:11
#9 0x4ccafe in handle_builtin git.c:729:3
#10 0x4cb01c in run_argv git.c:818:4
#11 0x4cb01c in cmd_main git.c:949:19
#12 0x6b3f3d in main common-main.c:52:11
#13 0x7fa8addf3349 in __libc_start_main (/lib64/libc.so.6+0x24349)
Indirect leak of 134 byte(s) in 1 object(s) allocated from:
#0 0x49ab49 in realloc ../projects/compiler-rt/lib/asan/asan_malloc_linux.cpp:164:3
#1 0xa721e5 in xrealloc wrapper.c:126:8
#2 0x9e8d54 in strbuf_grow strbuf.c:98:2
#3 0x9e8d54 in strbuf_vaddf strbuf.c:401:3
#4 0x9f7774 in strvec_pushf strvec.c:36:2
#5 0xa43fe4 in setup_unpack_trees_porcelain unpack-trees.c:168:3
#6 0x97e011 in reset_head reset.c:53:2
#7 0x61dfa5 in cmd_rebase builtin/rebase.c:1991:9
#8 0x4ce83e in run_builtin git.c:475:11
#9 0x4ccafe in handle_builtin git.c:729:3
#10 0x4cb01c in run_argv git.c:818:4
#11 0x4cb01c in cmd_main git.c:949:19
#12 0x6b3f3d in main common-main.c:52:11
#13 0x7fa8addf3349 in __libc_start_main (/lib64/libc.so.6+0x24349)
Indirect leak of 130 byte(s) in 1 object(s) allocated from:
#0 0x49ab49 in realloc ../projects/compiler-rt/lib/asan/asan_malloc_linux.cpp:164:3
#1 0xa721e5 in xrealloc wrapper.c:126:8
#2 0x9e8d54 in strbuf_grow strbuf.c:98:2
#3 0x9e8d54 in strbuf_vaddf strbuf.c:401:3
#4 0x9f7774 in strvec_pushf strvec.c:36:2
#5 0xa43f20 in setup_unpack_trees_porcelain unpack-trees.c:150:3
#6 0x97e011 in reset_head reset.c:53:2
#7 0x61dfa5 in cmd_rebase builtin/rebase.c:1991:9
#8 0x4ce83e in run_builtin git.c:475:11
#9 0x4ccafe in handle_builtin git.c:729:3
#10 0x4cb01c in run_argv git.c:818:4
#11 0x4cb01c in cmd_main git.c:949:19
#12 0x6b3f3d in main common-main.c:52:11
#13 0x7fa8addf3349 in __libc_start_main (/lib64/libc.so.6+0x24349)
SUMMARY: AddressSanitizer: 603 byte(s) leaked in 4 allocation(s).
Signed-off-by: Andrzej Hunt <andrzej@ahunt.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Up until recently, object IDs did not have an algorithm member, only a
hash. Consequently, it was possible to share one null (all-zeros)
object ID among all hash algorithms. Now that we're going to be
handling objects from multiple hash algorithms, it's important to make
sure that all object IDs have a correct algorithm field.
Introduce a per-algorithm null OID, and add it to struct hash_algo.
Introduce a wrapper function as well, and use it everywhere we used to
use the null_oid constant.
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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"git merge" learns the "--autostash" option.
* dl/merge-autostash: (22 commits)
pull: pass --autostash to merge
t5520: make test_pull_autostash() accept expect_parent_num
merge: teach --autostash option
sequencer: implement apply_autostash_oid()
sequencer: implement save_autostash()
sequencer: unlink autostash in apply_autostash()
sequencer: extract perform_autostash() from rebase
rebase: generify create_autostash()
rebase: extract create_autostash()
reset: extract reset_head() from rebase
rebase: generify reset_head()
rebase: use apply_autostash() from sequencer.c
sequencer: rename stash_sha1 to stash_oid
sequencer: make apply_autostash() accept a path
rebase: use read_oneliner()
sequencer: make read_oneliner() extern
sequencer: configurably warn on non-existent files
sequencer: make read_oneliner() accept flags
sequencer: make file exists check more efficient
sequencer: stop leaking buf
...
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Continue the process of lib-ifying the autostash code. In a future
commit, this will be used to implement `--autostash` in other builtins.
This patch is best viewed with `--color-moved`.
Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Emily Shaffer
Elijah Newren
Andrzej Hunt
brian m. carlson
Junio C Hamano
Denton Liu