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Merge branch 'tb/midx-race-in-pack-objects'

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The multi-pack-index code did not protect the packfile it is going
to depend on from getting removed while in use, which has been
corrected.

* tb/midx-race-in-pack-objects:
  builtin/pack-objects.c: ensure pack validity from MIDX bitmap objects
  builtin/pack-objects.c: ensure included `--stdin-packs` exist
  builtin/pack-objects.c: avoid redundant NULL check
  pack-bitmap.c: check preferred pack validity when opening MIDX bitmap
This commit is contained in:
Junio C Hamano
2022-06-03 14:30:35 -07:00
parent d8c8dccbaa 4090511e40
commit 091680472d
2 changed files with 42 additions and 19 deletions
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18
pack-bitmap.c
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@ -315,6 +315,8 @@ static int open_midx_bitmap_1(struct bitmap_index *bitmap_git,
struct stat st;
char *idx_name = midx_bitmap_filename(midx);
int fd = git_open(idx_name);
uint32_t i;
struct packed_git *preferred;
free(idx_name);
@ -353,6 +355,20 @@ static int open_midx_bitmap_1(struct bitmap_index *bitmap_git,
warning(_("multi-pack bitmap is missing required reverse index"));
goto cleanup;
}
for (i = 0; i < bitmap_git->midx->num_packs; i++) {
if (prepare_midx_pack(the_repository, bitmap_git->midx, i))
die(_("could not open pack %s"),
bitmap_git->midx->pack_names[i]);
}
preferred = bitmap_git->midx->packs[midx_preferred_pack(bitmap_git)];
if (!is_pack_valid(preferred)) {
warning(_("preferred pack (%s) is invalid"),
preferred->pack_name);
goto cleanup;
}
return 0;
cleanup:
@ -429,8 +445,6 @@ static int load_reverse_index(struct bitmap_index *bitmap_git)
* since we will need to make use of them in pack-objects.
*/
for (i = 0; i < bitmap_git->midx->num_packs; i++) {
if (prepare_midx_pack(the_repository, bitmap_git->midx, i))
die(_("load_reverse_index: could not open pack"));
ret = load_pack_revindex(bitmap_git->midx->packs[i]);
if (ret)
return ret;