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| author | Taylor Blau <me@ttaylorr.com> | 2021-01-13 22:24:45 (GMT) |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2021-01-14 05:53:47 (GMT) |
| commit | 0a7e3642bc0d42a2c322886e64872ac9d736fa84 (patch) | |
| tree | 517f7f061419e0357e6d87f163eb72d4a33ec243 /packfile.c | |
| parent | fc150caf67d91b0eeba359d63b4ce707aba8b5ca (diff) | |
| download | git-0a7e3642bc0d42a2c322886e64872ac9d736fa84.zip git-0a7e3642bc0d42a2c322886e64872ac9d736fa84.tar.gz git-0a7e3642bc0d42a2c322886e64872ac9d736fa84.tar.bz2 | |
unpack_entry(): convert to new revindex API
Remove direct manipulation of the 'struct revindex_entry' type as well
as calls to the deprecated API in 'packfile.c:unpack_entry()'. Usual
clean-up is performed (replacing '->nr' with calls to
'pack_pos_to_index()' and so on).
Add an additional check to make sure that 'obj_offset()' points at a
valid object. In the case this check is violated, we cannot call
'mark_bad_packed_object()' because we don't know the OID. At the top of
the call stack is do_oid_object_info_extended() (via
packed_object_info()), which does mark the object.
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'packfile.c')
| -rw-r--r-- | packfile.c | 26 |
1 files changed, 18 insertions, 8 deletions
@@ -1694,11 +1694,21 @@ void *unpack_entry(struct repository *r, struct packed_git *p, off_t obj_offset, } if (do_check_packed_object_crc && p->index_version > 1) { - struct revindex_entry *revidx = find_pack_revindex(p, obj_offset); - off_t len = revidx[1].offset - obj_offset; - if (check_pack_crc(p, &w_curs, obj_offset, len, revidx->nr)) { + uint32_t pack_pos, index_pos; + off_t len; + + if (offset_to_pack_pos(p, obj_offset, &pack_pos) < 0) { + error("could not find object at offset %"PRIuMAX" in pack %s", + (uintmax_t)obj_offset, p->pack_name); + data = NULL; + goto out; + } + + len = pack_pos_to_offset(p, pack_pos + 1) - obj_offset; + index_pos = pack_pos_to_index(p, pack_pos); + if (check_pack_crc(p, &w_curs, obj_offset, len, index_pos)) { struct object_id oid; - nth_packed_object_id(&oid, p, revidx->nr); + nth_packed_object_id(&oid, p, index_pos); error("bad packed object CRC for %s", oid_to_hex(&oid)); mark_bad_packed_object(p, oid.hash); @@ -1781,11 +1791,11 @@ void *unpack_entry(struct repository *r, struct packed_git *p, off_t obj_offset, * This is costly but should happen only in the presence * of a corrupted pack, and is better than failing outright. */ - struct revindex_entry *revidx; + uint32_t pos; struct object_id base_oid; - revidx = find_pack_revindex(p, obj_offset); - if (revidx) { - nth_packed_object_id(&base_oid, p, revidx->nr); + if (!(offset_to_pack_pos(p, obj_offset, &pos))) { + nth_packed_object_id(&base_oid, p, + pack_pos_to_index(p, pos)); error("failed to read delta base object %s" " at offset %"PRIuMAX" from %s", oid_to_hex(&base_oid), (uintmax_t)obj_offset, |