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sparse-checkout: create leading directories

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The 'git init' command creates the ".git/info" directory and fills it
with some default files. However, 'git worktree add' does not create
the info directory for that worktree. This causes a problem when running
"git sparse-checkout init" inside a worktree. While care was taken to
allow the sparse-checkout config to be specific to a worktree, this
initialization was untested.

Safely create the leading directories for the sparse-checkout file. This
is the safest thing to do even without worktrees, as a user could delete
their ".git/info" directory and expect Git to recover safely.

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Derrick Stolee 2020-01-24 21:19:33 +00:00 committed by Junio C Hamano
parent d622c34396
commit 3c754067a1
2 changed files with 14 additions and 0 deletions
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4
builtin/sparse-checkout.c
View file

@ -199,6 +199,10 @@ static int write_patterns_and_update(struct pattern_list *pl)
int result;
sparse_filename = get_sparse_checkout_filename();
if (safe_create_leading_directories(sparse_filename))
die(_("failed to create directory for sparse-checkout file"));
fd = hold_lock_file_for_update(&lk, sparse_filename,
LOCK_DIE_ON_ERROR);

10
t/t1091-sparse-checkout-builtin.sh
View file

@ -295,4 +295,14 @@ test_expect_success 'interaction with submodules' '
check_files super/modules/child a deep folder1 folder2
'
test_expect_success 'different sparse-checkouts with worktrees' '
git -C repo worktree add --detach ../worktree &&
check_files worktree "a deep folder1 folder2" &&
git -C worktree sparse-checkout init --cone &&
git -C repo sparse-checkout set folder1 &&
git -C worktree sparse-checkout set deep/deeper1 &&
check_files repo a folder1 &&
check_files worktree a deep
'
test_done