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| author | Ben Peart <benpeart@microsoft.com> | 2017-09-22 12:35:41 -0400 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2017-10-01 17:23:05 +0900 |
| commit | 780494b1f5c3744860c485d1e9f1b23879f8936f (patch) | |
| tree | 004b18325fca198ffb5e15b827728c6abf9f9edc /Documentation/technical | |
| parent | 883e248b8a0fd88773cb902ab8e91273eb147d07 (diff) | |
| download | git-780494b1f5c3744860c485d1e9f1b23879f8936f.tar.gz | |
fsmonitor: add documentation for the fsmonitor extension.
This includes the core.fsmonitor setting, the fsmonitor integration hook,
and the fsmonitor index extension.
Also add documentation for the new fsmonitor options to ls-files and
update-index.
Signed-off-by: Ben Peart <benpeart@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'Documentation/technical')
| -rw-r--r-- | Documentation/technical/index-format.txt | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/Documentation/technical/index-format.txt b/Documentation/technical/index-format.txt index ade0b0c445..db3572626b 100644 --- a/Documentation/technical/index-format.txt +++ b/Documentation/technical/index-format.txt @@ -295,3 +295,22 @@ The remaining data of each directory block is grouped by type: in the previous ewah bitmap. - One NUL. + +== File System Monitor cache + + The file system monitor cache tracks files for which the core.fsmonitor + hook has told us about changes. The signature for this extension is + { 'F', 'S', 'M', 'N' }. + + The extension starts with + + - 32-bit version number: the current supported version is 1. + + - 64-bit time: the extension data reflects all changes through the given + time which is stored as the nanoseconds elapsed since midnight, + January 1, 1970. + + - 32-bit bitmap size: the size of the CE_FSMONITOR_VALID bitmap. + + - An ewah bitmap, the n-th bit indicates whether the n-th index entry + is not CE_FSMONITOR_VALID. |