diff options
Diffstat (limited to 'Documentation/technical')
| -rw-r--r-- | Documentation/technical/api-argv-array.txt | 3 | ||||
| -rw-r--r-- | Documentation/technical/api-parse-options.txt | 19 | ||||
| -rw-r--r-- | Documentation/technical/api-ref-iteration.txt | 2 | ||||
| -rw-r--r-- | Documentation/technical/api-remote.txt | 4 | ||||
| -rw-r--r-- | Documentation/technical/http-protocol.txt | 3 | ||||
| -rw-r--r-- | Documentation/technical/index-format.txt | 62 | ||||
| -rw-r--r-- | Documentation/technical/pack-protocol.txt | 16 | ||||
| -rw-r--r-- | Documentation/technical/protocol-capabilities.txt | 7 | ||||
| -rw-r--r-- | Documentation/technical/racy-git.txt | 8 |
9 files changed, 108 insertions, 16 deletions
diff --git a/Documentation/technical/api-argv-array.txt b/Documentation/technical/api-argv-array.txt index 1a797812fb..8076172a08 100644 --- a/Documentation/technical/api-argv-array.txt +++ b/Documentation/technical/api-argv-array.txt @@ -46,6 +46,9 @@ Functions Format a string and push it onto the end of the array. This is a convenience wrapper combining `strbuf_addf` and `argv_array_push`. +`argv_array_pushv`:: + Push a null-terminated array of strings onto the end of the array. + `argv_array_pop`:: Remove the final element from the array. If there are no elements in the array, do nothing. diff --git a/Documentation/technical/api-parse-options.txt b/Documentation/technical/api-parse-options.txt index 1f2db31312..5f0757dcc9 100644 --- a/Documentation/technical/api-parse-options.txt +++ b/Documentation/technical/api-parse-options.txt @@ -168,6 +168,12 @@ There are some macros to easily define options: Introduce an option with integer argument. The integer is put into `int_var`. +`OPT_MAGNITUDE(short, long, &unsigned_long_var, description)`:: + Introduce an option with a size argument. The argument must be a + non-negative integer and may include a suffix of 'k', 'm' or 'g' to + scale the provided value by 1024, 1024^2 or 1024^3 respectively. + The scaled value is put into `unsigned_long_var`. + `OPT_DATE(short, long, &int_var, description)`:: Introduce an option with date argument, see `approxidate()`. The timestamp is put into `int_var`. @@ -212,6 +218,19 @@ There are some macros to easily define options: Use it to hide deprecated options that are still to be recognized and ignored silently. +`OPT_PASSTHRU(short, long, &char_var, arg_str, description, flags)`:: + Introduce an option that will be reconstructed into a char* string, + which must be initialized to NULL. This is useful when you need to + pass the command-line option to another command. Any previous value + will be overwritten, so this should only be used for options where + the last one specified on the command line wins. + +`OPT_PASSTHRU_ARGV(short, long, &argv_array_var, arg_str, description, flags)`:: + Introduce an option where all instances of it on the command-line will + be reconstructed into an argv_array. This is useful when you need to + pass the command-line option, which can be specified multiple times, + to another command. + The last element of the array must be `OPT_END()`. diff --git a/Documentation/technical/api-ref-iteration.txt b/Documentation/technical/api-ref-iteration.txt index 02adfd45d3..37379d8337 100644 --- a/Documentation/technical/api-ref-iteration.txt +++ b/Documentation/technical/api-ref-iteration.txt @@ -6,7 +6,7 @@ Iteration of refs is done by using an iterate function which will call a callback function for every ref. The callback function has this signature: - int handle_one_ref(const char *refname, const unsigned char *sha1, + int handle_one_ref(const char *refname, const struct object_id *oid, int flags, void *cb_data); There are different kinds of iterate functions which all take a diff --git a/Documentation/technical/api-remote.txt b/Documentation/technical/api-remote.txt index 5d245aa9d1..2cfdd224a8 100644 --- a/Documentation/technical/api-remote.txt +++ b/Documentation/technical/api-remote.txt @@ -97,10 +97,6 @@ It contains: The name of the remote listed in the configuration. -`remote`:: - - The struct remote for that remote. - `merge_name`:: An array of the "merge" lines in the configuration. diff --git a/Documentation/technical/http-protocol.txt b/Documentation/technical/http-protocol.txt index 229f845dfa..1c561bdd92 100644 --- a/Documentation/technical/http-protocol.txt +++ b/Documentation/technical/http-protocol.txt @@ -319,7 +319,8 @@ Servers SHOULD support all capabilities defined here. Clients MUST send at least one "want" command in the request body. Clients MUST NOT reference an id in a "want" command which did not appear in the response obtained through ref discovery unless the -server advertises capability `allow-tip-sha1-in-want`. +server advertises capability `allow-tip-sha1-in-want` or +`allow-reachable-sha1-in-want`. compute_request = want_list have_list diff --git a/Documentation/technical/index-format.txt b/Documentation/technical/index-format.txt index 35112e4966..b7093af8b2 100644 --- a/Documentation/technical/index-format.txt +++ b/Documentation/technical/index-format.txt @@ -233,3 +233,65 @@ Git index format The remaining index entries after replaced ones will be added to the final index. These added entries are also sorted by entry name then stage. + +== Untracked cache + + Untracked cache saves the untracked file list and necessary data to + verify the cache. The signature for this extension is { 'U', 'N', + 'T', 'R' }. + + The extension starts with + + - A sequence of NUL-terminated strings, preceded by the size of the + sequence in variable width encoding. Each string describes the + environment where the cache can be used. + + - Stat data of $GIT_DIR/info/exclude. See "Index entry" section from + ctime field until "file size". + + - Stat data of core.excludesfile + + - 32-bit dir_flags (see struct dir_struct) + + - 160-bit SHA-1 of $GIT_DIR/info/exclude. Null SHA-1 means the file + does not exist. + + - 160-bit SHA-1 of core.excludesfile. Null SHA-1 means the file does + not exist. + + - NUL-terminated string of per-dir exclude file name. This usually + is ".gitignore". + + - The number of following directory blocks, variable width + encoding. If this number is zero, the extension ends here with a + following NUL. + + - A number of directory blocks in depth-first-search order, each + consists of + + - The number of untracked entries, variable width encoding. + + - The number of sub-directory blocks, variable width encoding. + + - The directory name terminated by NUL. + + - A number of untrached file/dir names terminated by NUL. + +The remaining data of each directory block is grouped by type: + + - An ewah bitmap, the n-th bit marks whether the n-th directory has + valid untracked cache entries. + + - An ewah bitmap, the n-th bit records "check-only" bit of + read_directory_recursive() for the n-th directory. + + - An ewah bitmap, the n-th bit indicates whether SHA-1 and stat data + is valid for the n-th directory and exists in the next data. + + - An array of stat data. The n-th data corresponds with the n-th + "one" bit in the previous ewah bitmap. + + - An array of SHA-1. The n-th SHA-1 corresponds with the n-th "one" bit + in the previous ewah bitmap. + + - One NUL. diff --git a/Documentation/technical/pack-protocol.txt b/Documentation/technical/pack-protocol.txt index 462e20645f..4064fc796f 100644 --- a/Documentation/technical/pack-protocol.txt +++ b/Documentation/technical/pack-protocol.txt @@ -1,11 +1,11 @@ Packfile transfer protocols =========================== -Git supports transferring data in packfiles over the ssh://, git:// and +Git supports transferring data in packfiles over the ssh://, git://, http:// and file:// transports. There exist two sets of protocols, one for pushing data from a client to a server and another for fetching data from a -server to a client. All three transports (ssh, git, file) use the same -protocol to transfer data. +server to a client. The three transports (ssh, git, file) use the same +protocol to transfer data. http is documented in http-protocol.txt. The processes invoked in the canonical Git implementation are 'upload-pack' on the server side and 'fetch-pack' on the client side for fetching data; @@ -465,7 +465,7 @@ contain all the objects that the server will need to complete the new references. ---- - update-request = *shallow ( command-list | push-cert ) [pack-file] + update-request = *shallow ( command-list | push-cert ) [packfile] shallow = PKT-LINE("shallow" SP obj-id LF) @@ -491,7 +491,7 @@ references. *PKT-LINE(gpg-signature-lines LF) PKT-LINE("push-cert-end" LF) - pack-file = "PACK" 28*(OCTET) + packfile = "PACK" 28*(OCTET) ---- If the receiving end does not support delete-refs, the sending end MUST @@ -502,11 +502,11 @@ MUST NOT send a push-cert command. When a push-cert command is sent, command-list MUST NOT be sent; the commands recorded in the push certificate is used instead. -The pack-file MUST NOT be sent if the only command used is 'delete'. +The packfile MUST NOT be sent if the only command used is 'delete'. -A pack-file MUST be sent if either create or update command is used, +A packfile MUST be sent if either create or update command is used, even if the server already has all the necessary objects. In this -case the client MUST send an empty pack-file. The only time this +case the client MUST send an empty packfile. The only time this is likely to happen is if the client is creating a new branch or a tag that points to an existing obj-id. diff --git a/Documentation/technical/protocol-capabilities.txt b/Documentation/technical/protocol-capabilities.txt index 4f8a7bfb4c..eaab6b4ac7 100644 --- a/Documentation/technical/protocol-capabilities.txt +++ b/Documentation/technical/protocol-capabilities.txt @@ -260,6 +260,13 @@ If the upload-pack server advertises this capability, fetch-pack may send "want" lines with SHA-1s that exist at the server but are not advertised by upload-pack. +allow-reachable-sha1-in-want +---------------------------- + +If the upload-pack server advertises this capability, fetch-pack may +send "want" lines with SHA-1s that exist at the server but are not +advertised by upload-pack. + push-cert=<nonce> ----------------- diff --git a/Documentation/technical/racy-git.txt b/Documentation/technical/racy-git.txt index 242a044db9..4a8be4d144 100644 --- a/Documentation/technical/racy-git.txt +++ b/Documentation/technical/racy-git.txt @@ -41,13 +41,17 @@ With a `USE_STDEV` compile-time option, `st_dev` is also compared, but this is not enabled by default because this member is not stable on network filesystems. With `USE_NSEC` compile-time option, `st_mtim.tv_nsec` and `st_ctim.tv_nsec` -members are also compared, but this is not enabled by default +members are also compared. On Linux, this is not enabled by default because in-core timestamps can have finer granularity than on-disk timestamps, resulting in meaningless changes when an inode is evicted from the inode cache. See commit 8ce13b0 of git://git.kernel.org/pub/scm/linux/kernel/git/tglx/history.git ([PATCH] Sync in core time granularity with filesystems, -2005-01-04). +2005-01-04). This patch is included in kernel 2.6.11 and newer, but +only fixes the issue for file systems with exactly 1 ns or 1 s +resolution. Other file systems are still broken in current Linux +kernels (e.g. CEPH, CIFS, NTFS, UDF), see +https://lkml.org/lkml/2015/6/9/714 Racy Git -------- |