git/fetch-pack.c, branch v2.29.2

Merge branch 'jt/lazy-fetch'

2020-09-03T19:37:04Z

Updates to on-demand fetching code in lazily cloned repositories. * jt/lazy-fetch: fetch: no FETCH_HEAD display if --no-write-fetch-head fetch-pack: remove no_dependents code promisor-remote: lazy-fetch objects in subprocess fetch-pack: do not lazy-fetch during ref iteration fetch: only populate existing_refs if needed fetch: avoid reading submodule config until needed fetch: allow refspecs specified through stdin negotiator/noop: add noop fetch negotiator

Merge branch 'jt/fetch-pack-loosen-validation-with-packfile-uri'

2020-09-03T19:37:01Z

Bugfix for "git fetch" when the packfile URI capability is in use. * jt/fetch-pack-loosen-validation-with-packfile-uri: fetch-pack: make packfile URIs work with transfer.fsckobjects fetch-pack: document only_packfile in get_pack() (various): document from_promisor parameter

fetch-pack: make packfile URIs work with transfer.fsckobjects

2020-08-25T00:34:24Z

When fetching with packfile URIs and transfer.fsckobjects=1, use the --fsck-objects instead of the --strict flag when invoking index-pack so that links are not checked, only objects. This is because incomplete links are expected. (A subsequent connectivity check will be done when all the packs have been downloaded regardless of whether transfer.fsckobjects is set.) This is similar to 98a2ea46c2 ("fetch-pack: do not check links for partial fetch", 2018-03-15), but for packfile URIs instead of partial clones. Signed-off-by: Jonathan Tan Signed-off-by: Junio C Hamano

fetch-pack: document only_packfile in get_pack()

2020-08-25T00:31:09Z

dd4b732df7 ("upload-pack: send part of packfile response as uri", 2020-06-10) added the "only_packfile" parameter to get_pack() but did not document it. Add documentation. Signed-off-by: Jonathan Tan Signed-off-by: Junio C Hamano

fetch-pack: in partial clone, pass --promisor

2020-08-20T20:18:27Z

When fetching a pack from a promisor remote, the corresponding .promisor file needs to be created. "fetch-pack" originally did this by passing "--promisor" to "index-pack", but in 5374a290aa ("fetch-pack: write fetched refs to .promisor", 2019-10-16), "fetch-pack" was taught to do this itself instead, because it needed to store ref information in the .promisor file. This causes a problem with superprojects when transfer.fsckobjects is set, because in the current implementation, it is "index-pack" that calls fsck_finish() to check the objects; before 5374a290aa, fsck_finish() would see that .gitmodules is a promisor object and tolerate it being missing, but after, there is no .promisor file (at the time of the invocation of fsck_finish() by "index-pack") to tell it that .gitmodules is a promisor object, so it returns an error. Therefore, teach "fetch-pack" to pass "--promisor" to index pack once again. "fetch-pack" will subsequently overwrite this file with the ref information. An alternative is to instead move object checking to "fetch-pack", and let "index-pack" only index the files. However, since "index-pack" has to inflate objects in order to index them, it seems reasonable to also let it check the objects (which also require inflated files). Signed-off-by: Jonathan Tan Signed-off-by: Junio C Hamano

fetch-pack: remove no_dependents code

2020-08-18T23:46:53Z

Now that Git has switched to using a subprocess to lazy-fetch missing objects, remove the no_dependents code as it is no longer used. Signed-off-by: Jonathan Tan Signed-off-by: Junio C Hamano

fetch-pack: do not lazy-fetch during ref iteration

2020-08-18T20:25:05Z

In order to determine negotiation tips, "fetch-pack" iterates over all refs and dereferences all annotated tags found. This causes the existence of targets of refs and annotated tags to be checked. Avoiding this is especially important when we use "git fetch" (which invokes "fetch-pack") to perform lazy fetches in a partial clone because a target of such a ref or annotated tag may need to be itself lazy-fetched (and otherwise causing an infinite loop). Therefore, teach "fetch-pack" not to lazy fetch whenever iterating over refs. This is done by using the raw form of ref iteration and by dereferencing tags ourselves. Signed-off-by: Jonathan Tan Signed-off-by: Junio C Hamano

strvec: fix indentation in renamed calls

2020-07-28T22:02:18Z

Code which split an argv_array call across multiple lines, like: argv_array_pushl(&args, "one argument", "another argument", "and more", NULL); was recently mechanically renamed to use strvec, which results in mis-matched indentation like: strvec_pushl(&args, "one argument", "another argument", "and more", NULL); Let's fix these up to align the arguments with the opening paren. I did this manually by sifting through the results of: git jump grep 'strvec_.*,$' and liberally applying my editor's auto-format. Most of the changes are of the form shown above, though I also normalized a few that had originally used a single-tab indentation (rather than our usual style of aligning with the open paren). I also rewrapped a couple of obvious cases (e.g., where previously too-long lines became short enough to fit on one), but I wasn't aggressive about it. In cases broken to three or more lines, the grouping of arguments is sometimes meaningful, and it wasn't worth my time or reviewer time to ponder each case individually. Signed-off-by: Jeff King Signed-off-by: Junio C Hamano

strvec: convert more callers away from argv_array name

2020-07-28T22:02:18Z

We eventually want to drop the argv_array name and just use strvec consistently. There's no particular reason we have to do it all at once, or care about interactions between converted and unconverted bits. Because of our preprocessor compat layer, the names are interchangeable to the compiler (so even a definition and declaration using different names is OK). This patch converts remaining files from the first half of the alphabet, to keep the diff to a manageable size. The conversion was done purely mechanically with: git ls-files '*.c' '*.h' | xargs perl -i -pe ' s/ARGV_ARRAY/STRVEC/g; s/argv_array/strvec/g; ' and then selectively staging files with "git add '[abcdefghjkl]*'". We'll deal with any indentation/style fallouts separately. Signed-off-by: Jeff King Signed-off-by: Junio C Hamano

Merge branch 'bc/sha-256-part-2'

2020-07-07T05:09:13Z

SHA-256 migration work continues. * bc/sha-256-part-2: (44 commits) remote-testgit: adapt for object-format bundle: detect hash algorithm when reading refs t5300: pass --object-format to git index-pack t5704: send object-format capability with SHA-256 t5703: use object-format serve option t5702: offer an object-format capability in the test t/helper: initialize the repository for test-sha1-array remote-curl: avoid truncating refs with ls-remote t1050: pass algorithm to index-pack when outside repo builtin/index-pack: add option to specify hash algorithm remote-curl: detect algorithm for dumb HTTP by size builtin/ls-remote: initialize repository based on fetch t5500: make hash independent serve: advertise object-format capability for protocol v2 connect: parse v2 refs with correct hash algorithm connect: pass full packet reader when parsing v2 refs Documentation/technical: document object-format for protocol v2 t1302: expect repo format version 1 for SHA-256 builtin/show-index: provide options to determine hash algo t5302: modernize test formatting ...