diff options
Diffstat (limited to 'subversion/libsvn_fs_fs/structure')
| -rw-r--r-- | subversion/libsvn_fs_fs/structure | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/subversion/libsvn_fs_fs/structure b/subversion/libsvn_fs_fs/structure index 7b5129f17cee9..f624d616c7b52 100644 --- a/subversion/libsvn_fs_fs/structure +++ b/subversion/libsvn_fs_fs/structure @@ -150,12 +150,14 @@ The formats are: Format 5, understood by Subversion 1.7-dev, never released Format 6, understood by Subversion 1.8 Format 7, understood by Subversion 1.9 + Format 8, understood by Subversion 1.10 The differences between the formats are: Delta representation in revision files - Format 1: svndiff0 only - Formats 2+: svndiff0 or svndiff1 + Format 1: svndiff0 only + Formats 2-7: svndiff0 or svndiff1 + Formats 8: svndiff0, svndiff1 or svndiff2 Format options Formats 1-2: none permitted @@ -198,9 +200,9 @@ Shard packing: (i.e. same min packed revision) Addressing: - Format 1-6: Physical addressing; uses fixed positions within a rev file + Format 1+: Physical addressing; uses fixed positions within a rev file Format 7+: Logical addressing; uses item index that will be translated - on-the-fly to the actual rev / pack file location + on-the-fly to the actual rev / pack file location (default for 7+ created) Repository IDs: Format 1+: The first line of db/uuid contains the repository UUID @@ -525,6 +527,7 @@ A revision file contains a concatenation of various kinds of data: * Text and property representations * Node-revisions * The changed-path data + * Two offsets at the very end (physical addressing only) * Index data (logical addressing only) * Revision / pack file footer (logical addressing only) @@ -565,6 +568,9 @@ defined: ### in formats >=4, also present: <sha1-digest> gives hex SHA1 digest of expanded rep <uniquifier> see representation_t->uniquifier in fs.h + ### Starting from format 8, a special notation "-" + can be used for optional values that are not present + (<sha1-digest> and <uniquifier>). cpath FS pathname node was created at copyfrom "<rev> <path>" of copyfrom data copyroot "<rev> <created-path>" of the root of this copy @@ -757,6 +763,9 @@ Format 7 introduces logical addressing that requires item indexes to be translated / mapped to physical rev / pack file offsets. These indexes are appended to the respective rev / pack file. +The indexes map (revision number, item-index) pairs to absolute file offsets +and absolute file offsets to (revision number, item-index, item metadata). + Details of the binary format used by these index files can be found in structure-indexes. |