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[104.178.186.189]) by smtp.gmail.com with ESMTPSA id jk3-20020a05622a748300b0041aff9339a2sm821638qtb.22.2023.10.13.12.25.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Oct 2023 12:25:33 -0700 (PDT) Date: Fri, 13 Oct 2023 15:25:32 -0400 From: Taylor Blau To: git@vger.kernel.org Cc: Junio C Hamano , Jeff King Subject: [PATCH 6/8] midx: read `OIDF` chunk with `pair_chunk_expect()` Message-ID: References: <20231009205544.GA3281950@coredump.intra.peff.net> Precedence: bulk X-Mailing-List: git@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: List-Unsubscribe-Post: List-Unsubscribe=One-Click Perform an identical conversion as in previous commits to read the OIDF chunk in the MIDX machinery. Signed-off-by: Taylor Blau --- midx.c | 21 ++++++--------------- 1 file changed, 6 insertions(+), 15 deletions(-) diff --git a/midx.c b/midx.c index 2f3863c936..38bf816cce 100644 --- a/midx.c +++ b/midx.c @@ -61,20 +61,6 @@ void get_midx_rev_filename(struct strbuf *out, struct multi_pack_index *m) strbuf_addf(out, "-%s.rev", hash_to_hex(get_midx_checksum(m))); } -static int midx_read_oid_fanout(const unsigned char *chunk_start, - size_t chunk_size, void *data) -{ - struct multi_pack_index *m = data; - m->chunk_oid_fanout = (uint32_t *)chunk_start; - - if (chunk_size != 4 * 256) { - error(_("multi-pack-index OID fanout is of the wrong size")); - return 1; - } - m->num_objects = ntohl(m->chunk_oid_fanout[255]); - return 0; -} - static int midx_read_oid_lookup(const unsigned char *chunk_start, size_t chunk_size, void *data) { @@ -173,8 +159,13 @@ struct multi_pack_index *load_multi_pack_index(const char *object_dir, int local if (pair_chunk(cf, MIDX_CHUNKID_PACKNAMES, &m->chunk_pack_names, &m->chunk_pack_names_len)) die(_("multi-pack-index required pack-name chunk missing or corrupted")); - if (read_chunk(cf, MIDX_CHUNKID_OIDFANOUT, midx_read_oid_fanout, m)) + if (pair_chunk_expect(cf, MIDX_CHUNKID_OIDFANOUT, + (const unsigned char **)&m->chunk_oid_fanout, + 256 * sizeof(uint32_t))) { + error(_("multi-pack-index OID fanout is of the wrong size")); die(_("multi-pack-index required OID fanout chunk missing or corrupted")); + } + m->num_objects = ntohl(m->chunk_oid_fanout[255]); if (read_chunk(cf, MIDX_CHUNKID_OIDLOOKUP, midx_read_oid_lookup, m)) die(_("multi-pack-index required OID lookup chunk missing or corrupted")); if (read_chunk(cf, MIDX_CHUNKID_OBJECTOFFSETS, midx_read_object_offsets, m)) -- 2.42.0.352.gd9c5062ff7.dirty