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[104.178.186.189]) by smtp.gmail.com with ESMTPSA id s7sm1584005ioc.42.2021.09.09.16.24.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 09 Sep 2021 16:24:33 -0700 (PDT) Date: Thu, 9 Sep 2021 19:24:32 -0400 From: Taylor Blau To: git@vger.kernel.org Cc: avarab@gmail.com, gitster@pobox.com Subject: [PATCH v2 2/9] bulk-checkin.c: store checksum directly Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org finish_bulk_checkin() stores the checksum from finalize_hashfile() by writing to the `hash` member of `struct object_id`, but that hash has nothing to do with an object id (it's just a convenient location that happens to be sized correctly). Store the hash directly in an unsigned char array. This behaves the same as writing to the `hash` member, but makes the intent clearer (and avoids allocating an extra four bytes for the `algo` member of `struct object_id`). It likewise prevents the possibility of a segfault when reading `algo` (e.g., by calling `oid_to_hex()`) if it is uninitialized. Signed-off-by: Taylor Blau --- bulk-checkin.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/bulk-checkin.c b/bulk-checkin.c index b023d9959a..6283bc8bd9 100644 --- a/bulk-checkin.c +++ b/bulk-checkin.c @@ -25,7 +25,7 @@ static struct bulk_checkin_state { static void finish_bulk_checkin(struct bulk_checkin_state *state) { - struct object_id oid; + unsigned char hash[GIT_MAX_RAWSZ]; struct strbuf packname = STRBUF_INIT; int i; @@ -37,11 +37,11 @@ static void finish_bulk_checkin(struct bulk_checkin_state *state) unlink(state->pack_tmp_name); goto clear_exit; } else if (state->nr_written == 1) { - finalize_hashfile(state->f, oid.hash, CSUM_HASH_IN_STREAM | CSUM_FSYNC | CSUM_CLOSE); + finalize_hashfile(state->f, hash, CSUM_HASH_IN_STREAM | CSUM_FSYNC | CSUM_CLOSE); } else { - int fd = finalize_hashfile(state->f, oid.hash, 0); - fixup_pack_header_footer(fd, oid.hash, state->pack_tmp_name, - state->nr_written, oid.hash, + int fd = finalize_hashfile(state->f, hash, 0); + fixup_pack_header_footer(fd, hash, state->pack_tmp_name, + state->nr_written, hash, state->offset); close(fd); } @@ -49,7 +49,7 @@ static void finish_bulk_checkin(struct bulk_checkin_state *state) strbuf_addf(&packname, "%s/pack/pack-", get_object_directory()); finish_tmp_packfile(&packname, state->pack_tmp_name, state->written, state->nr_written, - &state->pack_idx_opts, oid.hash); + &state->pack_idx_opts, hash); for (i = 0; i < state->nr_written; i++) free(state->written[i]); -- 2.33.0.96.g73915697e6