user/sven/git.git/pack.h, branch v1.7.7.4

index-pack --verify: read anomalous offsets from v2 idx file

2011-02-28T07:29:03Z

A pack v2 .idx file usually records offset using 64-bit representation only when the offset does not fit within 31-bit, but you can handcraft your .idx file to record smaller offset using 64-bit, storing all zero in the upper 4-byte. By inspecting the original idx file when running index-pack --verify, encode such low offsets that do not need to be in 64-bit but are encoded using 64-bit just like the original idx file so that we can still validate the pack/idx pair by comparing the idx file recomputed with the original. Signed-off-by: Junio C Hamano

index-pack: --verify

2011-02-28T07:29:03Z

Given an existing .pack file and the .idx file that describes it, this new mode of operation reads and re-index the packfile and makes sure the existing .idx file matches the result byte-for-byte. All the objects in the .pack file are validated during this operation as well. Unlike verify-pack, which visits each object described in the .idx file in the SHA-1 order, index-pack efficiently exploits the delta-chain to avoid rebuilding the objects that are used as the base of deltified objects over and over again while validating the objects, resulting in much quicker verification of the .pack file and its .idx file. This version however cannot verify a .pack/.idx pair with a handcrafted v2 index that uses 64-bit offset representation for offsets that would fit within 31-bit. You can create such an .idx file by giving a custom offset to --index-version option to the command. Signed-off-by: Junio C Hamano

write_idx_file: introduce a struct to hold idx customization options

2011-02-28T07:29:03Z

Remove two globals, pack_idx_default version and pack_idx_off32_limit, and place them in a pack_idx_option structure. Allow callers to pass it to write_idx_file() as a parameter. Adjust all callers to the API change. Signed-off-by: Junio C Hamano

Merge branch 'sp/maint-dumb-http-pack-reidx'

2010-05-21T11:02:19Z

* sp/maint-dumb-http-pack-reidx: http.c::new_http_pack_request: do away with the temp variable filename http-fetch: Use temporary files for pack-*.idx until verified http-fetch: Use index-pack rather than verify-pack to check packs Allow parse_pack_index on temporary files Extract verify_pack_index for reuse from verify_pack Introduce close_pack_index to permit replacement http.c: Remove unnecessary strdup of sha1_to_hex result http.c: Don't store destination name in request structures http.c: Drop useless != NULL test in finish_http_pack_request http.c: Tiny refactoring of finish_http_pack_request t5550-http-fetch: Use subshell for repository operations http.c: Remove bad free of static block

Extract verify_pack_index for reuse from verify_pack

2010-04-20T00:56:13Z

The dumb HTTP transport should verify an index is completely valid before trying to use it. That requires checking the header/footer but also checking the complete content SHA-1. All of this logic is already in the front half of verify_pack, so pull it out into a new function that can be reused. Signed-off-by: Shawn O. Pearce Signed-off-by: Junio C Hamano

move encode_in_pack_object_header() to a better place

2010-02-23T21:10:56Z

Commit 1b22b6c897 made duplicated versions of encode_header() into a common version called encode_in_pack_object_header(). There is however a better location that sha1_file.c for such a function though, as sha1_file.c contains nothing related to the creation of packs, and it is quite populated already. Also the comment that was moved to the header file should really remain near the function as it covers implementation details and provides no information about the actual function interface. Signed-off-by: Nicolas Pitre Signed-off-by: Junio C Hamano

make "index-pack" a built-in

2010-01-22T18:10:27Z

This required some fairly trivial packfile function 'const' cleanup, since the builtin commands get a const char *argv[] array. Signed-off-by: Linus Torvalds Signed-off-by: Junio C Hamano

improve reliability of fixup_pack_header_footer()

2008-08-30T04:51:27Z

Currently, this function has the potential to read corrupted pack data from disk and give it a valid SHA1 checksum. Let's add the ability to validate SHA1 checksum of existing data along the way, including before and after any arbitrary point in the pack. Signed-off-by: Nicolas Pitre Signed-off-by: Junio C Hamano

verify-pack: check packed object CRC when using index version 2

2008-06-25T06:58:57Z

To do so, check_pack_crc() moved from builtin-pack-objects.c to pack-check.c where it is more logical to share. Signed-off-by: Nicolas Pitre Signed-off-by: Junio C Hamano

move show_pack_info() where it belongs

2008-06-25T06:58:57Z

This is called when verify_pack() has its verbose argument set, and verbose in this context makes sense only for the actual 'git verify-pack' command. Therefore let's move show_pack_info() to builtin-verify-pack.c instead and remove useless verbose argument from verify_pack(). Signed-off-by: Nicolas Pitre Signed-off-by: Junio C Hamano