diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/config/pack.txt | 7 | ||||
| -rw-r--r-- | Documentation/git-index-pack.txt | 18 | ||||
| -rw-r--r-- | Documentation/technical/pack-format.txt | 20 |
3 files changed, 40 insertions, 5 deletions
diff --git a/Documentation/config/pack.txt b/Documentation/config/pack.txt index 837f1b1679..3da4ea98e2 100644 --- a/Documentation/config/pack.txt +++ b/Documentation/config/pack.txt @@ -133,3 +133,10 @@ pack.writeBitmapHashCache:: between an older, bitmapped pack and objects that have been pushed since the last gc). The downside is that it consumes 4 bytes per object of disk space. Defaults to true. + +pack.writeReverseIndex:: + When true, git will write a corresponding .rev file (see: + link:../technical/pack-format.html[Documentation/technical/pack-format.txt]) + for each new packfile that it writes in all places except for + linkgit:git-fast-import[1] and in the bulk checkin mechanism. + Defaults to false. diff --git a/Documentation/git-index-pack.txt b/Documentation/git-index-pack.txt index af0c26232c..69ba904d44 100644 --- a/Documentation/git-index-pack.txt +++ b/Documentation/git-index-pack.txt @@ -9,17 +9,18 @@ git-index-pack - Build pack index file for an existing packed archive SYNOPSIS -------- [verse] -'git index-pack' [-v] [-o <index-file>] <pack-file> +'git index-pack' [-v] [-o <index-file>] [--[no-]rev-index] <pack-file> 'git index-pack' --stdin [--fix-thin] [--keep] [-v] [-o <index-file>] - [<pack-file>] + [--[no-]rev-index] [<pack-file>] DESCRIPTION ----------- Reads a packed archive (.pack) from the specified file, and -builds a pack index file (.idx) for it. The packed archive -together with the pack index can then be placed in the -objects/pack/ directory of a Git repository. +builds a pack index file (.idx) for it. Optionally writes a +reverse-index (.rev) for the specified pack. The packed +archive together with the pack index can then be placed in +the objects/pack/ directory of a Git repository. OPTIONS @@ -35,6 +36,13 @@ OPTIONS fails if the name of packed archive does not end with .pack). +--[no-]rev-index:: + When this flag is provided, generate a reverse index + (a `.rev` file) corresponding to the given pack. If + `--verify` is given, ensure that the existing + reverse index is correct. Takes precedence over + `pack.writeReverseIndex`. + --stdin:: When this flag is provided, the pack is read from stdin instead and a copy is then written to <pack-file>. If diff --git a/Documentation/technical/pack-format.txt b/Documentation/technical/pack-format.txt index 96d2fc589f..8833b71c8b 100644 --- a/Documentation/technical/pack-format.txt +++ b/Documentation/technical/pack-format.txt @@ -274,6 +274,26 @@ Pack file entry: <+ Index checksum of all of the above. +== pack-*.rev files have the format: + + - A 4-byte magic number '0x52494458' ('RIDX'). + + - A 4-byte version identifier (= 1). + + - A 4-byte hash function identifier (= 1 for SHA-1, 2 for SHA-256). + + - A table of index positions (one per packed object, num_objects in + total, each a 4-byte unsigned integer in network order), sorted by + their corresponding offsets in the packfile. + + - A trailer, containing a: + + checksum of the corresponding packfile, and + + a checksum of all of the above. + +All 4-byte numbers are in network order. + == multi-pack-index (MIDX) files have the following format: The multi-pack-index files refer to multiple pack-files and loose objects. |