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sparse-checkout: check commit_lock_file when writing patterns

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When writing a new "sparse-checkout" file, we do the usual strategy of
writing to a lockfile and committing it into place. But we don't check
the outcome of commit_lock_file(). Failing there would prevent us from
writing a bogus file (good), but we would ignore the error and return a
successful exit code (bad).

Fix this by calling die(). Note that we need to keep the sparse_filename
variable valid for longer, since the filename stored in the lock_file
struct will be dropped when we run commit_lock_file().

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King
2024-09-05 23:47:38 -04:00
committed by Junio C Hamano
parent d39cc7185e
commit 19ace71de0
1 changed files with 3 additions and 2 deletions
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5
builtin/sparse-checkout.c
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@@ -338,7 +338,6 @@ static int write_patterns_and_update(struct pattern_list *pl)
fd = hold_lock_file_for_update(&lk, sparse_filename,
LOCK_DIE_ON_ERROR);
free(sparse_filename);
result = update_working_directory(pl);
if (result) {
@@ -355,10 +354,12 @@ static int write_patterns_and_update(struct pattern_list *pl)
write_patterns_to_file(fp, pl);
fflush(fp);
commit_lock_file(&lk);
if (commit_lock_file(&lk))
die_errno(_("unable to write %s"), sparse_filename);
out:
clear_pattern_list(pl);
free(sparse_filename);
return result;
}