Derrick Stolee 665d70ad03 commit-graph: use the "hash version" byte ... The commit-graph format reserved a byte among the header of the file to store a "hash version". During the SHA-256 work, this was not modified because file formats are not necessarily intended to work across hash versions. If a repository has SHA-256 as its hash algorithm, it automatically up-shifts the lengths of object names in all necessary formats. However, since we have this byte available for adjusting the version, we can make the file formats more obviously incompatible instead of relying on other context from the repository. Update the oid_version() method in commit-graph.c to add a new value, 2, for sha-256. This automatically writes the new value in a SHA-256 repository _and_ verifies the value is correct. This is a breaking change relative to the current 'master' branch since 092b677 (Merge branch 'bc/sha-256-cvs-svn-updates', 2020-08-13) but it is not breaking relative to any released version of Git. The test impact is relatively minor: the output of 'test-tool read-graph' lists the header information, so those instances of '1' need to be replaced with a variable determined by GIT_TEST_DEFAULT_HASH. A more careful test is added that specifically creates a repository of each type then swaps the commit-graph files. The important value here is that the "git log" command succeeds while writing a message to stderr. Helped-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Reviewed-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>		2020-08-17 16:45:14 -07:00
..
RelNotes	Seventh batch	2020-08-13 14:13:59 -07:00
config	Merge branch 'tb/upload-pack-filters'	2020-08-11 18:04:13 -07:00
howto	Merge branch 'js/pu-to-seen'	2020-07-06 22:09:16 -07:00
technical	commit-graph: use the "hash version" byte	2020-08-17 16:45:14 -07:00
.gitattributes	…
.gitignore	…
CodingGuidelines	Merge branch 'dl/python-2.7-is-the-floor-version'	2020-06-17 21:54:05 -07:00
Makefile	git.txt: add list of guides	2020-08-04 18:34:02 -07:00
MyFirstContribution.txt	docs: adjust for the recent rename of `pu` to `seen`	2020-06-25 09:18:53 -07:00
MyFirstObjectWalk.txt	MyFirstObjectWalk: remove unnecessary conditional statement	2020-03-30 11:16:41 -07:00
SubmittingPatches	Merge branch 'js/pu-to-seen'	2020-07-06 22:09:16 -07:00
asciidoc.conf	Doc: drop support for docbook-xsl before 1.72.0	2020-03-29 09:25:38 -07:00
asciidoctor-extensions.rb	…
blame-options.txt	blame-options.txt: document --first-parent option	2020-08-06 14:08:10 -07:00
build-docdep.perl	…
cat-texi.perl	…
cmd-list.perl	git.txt: add list of guides	2020-08-04 18:34:02 -07:00
config.txt	docs: add documentation for extensions.objectFormat	2020-07-30 09:16:49 -07:00
date-formats.txt	date-formats.txt: fix list continuation	2020-05-18 13:18:56 -07:00
diff-format.txt	doc: indent multi-line items in list	2019-12-13 12:18:07 -08:00
diff-generate-patch.txt	…
diff-options.txt	diff: add config option relative	2020-05-24 16:23:59 -07:00
doc-diff	doc-diff: use single-colon rule in rendering Makefile	2020-02-18 13:53:30 -08:00
docbook-xsl.css	…
docbook.xsl	…
everyday.txto	…
fetch-options.txt	Merge branch 'dr/doc-recurse-submodules'	2020-04-28 15:50:01 -07:00
fix-texi.perl	…
git-add.txt	…
git-am.txt	Documentation: document am --no-gpg-sign	2020-04-03 11:37:22 -07:00
git-annotate.txt	…
git-apply.txt	…
git-archimport.txt	…
git-archive.txt	…
git-bisect-lk2009.txt	Merge branch 'dl/lore-is-the-archive'	2019-12-06 15:09:24 -08:00
git-bisect.txt	…
git-blame.txt	…
git-branch.txt	docs: add missing diamond brackets	2020-06-24 09:14:21 -07:00
git-bugreport.txt	Merge branch 'es/bugreport-shell'	2020-06-08 18:06:28 -07:00
git-bundle.txt	bundle: add new version for use with SHA-256	2020-07-30 09:16:48 -07:00
git-cat-file.txt	cat-file: add missing [=<format>] to usage/synopsis	2020-07-01 15:54:05 -07:00
git-check-attr.txt	…
git-check-ignore.txt	Merge branch 'en/check-ignore' into maint	2020-03-17 15:02:23 -07:00
git-check-mailmap.txt	…
git-check-ref-format.txt	…
git-checkout-index.txt	…
git-checkout.txt	doc: --recurse-submodules mostly applies to active submodules	2020-04-06 13:42:43 -07:00
git-cherry-pick.txt	cherry-pick/revert: honour --no-gpg-sign in all case	2020-04-03 11:37:22 -07:00
git-cherry.txt	…
git-citool.txt	…
git-clean.txt	…
git-clone.txt	docs: add missing diamond brackets	2020-06-24 09:14:21 -07:00
git-column.txt	…
git-commit-graph.txt	Merge branch 'ds/commit-graph-bloom-updates' into master	2020-07-30 13:20:31 -07:00
git-commit-tree.txt	Documentation: merge commit-tree --[no-]gpg-sign	2020-04-03 11:37:22 -07:00
git-commit.txt	Documentation: reword commit --no-gpg-sign	2020-04-03 11:37:22 -07:00
git-config.txt	config: add '--show-scope' to print the scope of a config value	2020-02-10 10:49:12 -08:00
git-count-objects.txt	…
git-credential-cache--daemon.txt	…
git-credential-cache.txt	…
git-credential-store.txt	Merge branch 'cb/credential-store-ignore-bogus-lines'	2020-05-08 14:25:01 -07:00
git-credential.txt	git-credential.txt: use list continuation	2020-05-18 13:19:33 -07:00
git-cvsexportcommit.txt	…
git-cvsimport.txt	…
git-cvsserver.txt	…
git-daemon.txt	…
git-describe.txt	…
git-diff-files.txt	…
git-diff-index.txt	…
git-diff-tree.txt	…
git-diff.txt	git-diff.txt: reorder possible usages	2020-07-13 12:47:38 -07:00
git-difftool.txt	…
git-fast-export.txt	fast-export: allow seeding the anonymized mapping	2020-06-25 14:19:23 -07:00
git-fast-import.txt	Merge branch 'en/fast-import-looser-date'	2020-06-02 13:35:05 -07:00
git-fetch-pack.txt	…
git-fetch.txt	docs: adjust for the recent rename of `pu` to `seen`	2020-06-25 09:18:53 -07:00
git-filter-branch.txt	git-filter-branch.txt: wrap "maths" notation in backticks	2020-02-04 12:17:18 -08:00
git-fmt-merge-msg.txt	…
git-for-each-ref.txt	ref-filter: add support for %(contents:size)	2020-07-16 10:46:55 -07:00
git-format-patch.txt	format-patch: teach --no-encode-email-headers	2020-04-07 22:37:18 -07:00
git-fsck-objects.txt	…
git-fsck.txt	…
git-gc.txt	…
git-get-tar-commit-id.txt	…
git-grep.txt	Merge branch 'mt/grep-cquote-path'	2020-04-28 15:50:09 -07:00
git-gui.txt	…
git-hash-object.txt	…
git-help.txt	help: drop usage of 'common' and 'useful' for guides	2020-08-04 18:34:01 -07:00
git-http-backend.txt	…
git-http-fetch.txt	http-fetch: support fetching packfiles by URL	2020-06-10 18:06:34 -07:00
git-http-push.txt	…
git-imap-send.txt	…
git-index-pack.txt	Merge branch 'jb/doc-packfile-name' into master	2020-07-30 21:34:32 -07:00
git-init-db.txt	…
git-init.txt	init: allow specifying the initial branch name for the new repository	2020-06-24 09:14:21 -07:00
git-instaweb.txt	…
git-interpret-trailers.txt	…
git-log.txt	git-log.txt: include rev-list-description.txt	2020-07-08 22:08:54 -07:00
git-ls-files.txt	doc: --recurse-submodules mostly applies to active submodules	2020-04-06 13:42:43 -07:00
git-ls-remote.txt	docs: adjust for the recent rename of `pu` to `seen`	2020-06-25 09:18:53 -07:00
git-ls-tree.txt	…
git-mailinfo.txt	…
git-mailsplit.txt	…
git-merge-base.txt	…
git-merge-file.txt	…
git-merge-index.txt	…
git-merge-one-file.txt	…
git-merge-tree.txt	…
git-merge.txt	Doc: reference the "stash list" in autostash docs	2020-05-05 16:07:30 -07:00
git-mergetool--lib.txt	…
git-mergetool.txt	…
git-mktag.txt	…
git-mktree.txt	…
git-multi-pack-index.txt	multi-pack-index: respect repack.packKeptObjects=false	2020-05-10 09:50:55 -07:00
git-mv.txt	…
git-name-rev.txt	…
git-notes.txt	docs: improve the example that illustrates git-notes path names	2020-08-03 12:40:09 -07:00
git-p4.txt	git-p4: add p4 submit hooks	2020-02-14 08:58:53 -08:00
git-pack-objects.txt	pack-objects: no fetch when allow-{any,promisor}	2020-08-06 13:01:03 -07:00
git-pack-redundant.txt	…
git-pack-refs.txt	…
git-parse-remote.txt	…
git-patch-id.txt	…
git-prune-packed.txt	…
git-prune.txt	…
git-pull.txt	Merge branch 'dl/merge-autostash'	2020-04-29 16:15:27 -07:00
git-push.txt	…
git-quiltimport.txt	…
git-range-diff.txt	…
git-read-tree.txt	doc: --recurse-submodules mostly applies to active submodules	2020-04-06 13:42:43 -07:00
git-rebase.txt	Merge branch 'ma/rebase-doc-typofix' into master	2020-07-09 14:00:45 -07:00
git-receive-pack.txt	…
git-reflog.txt	…
git-remote-ext.txt	…
git-remote-fd.txt	…
git-remote-helpers.txto	…
git-remote.txt	…
git-repack.txt	…
git-replace.txt	…
git-request-pull.txt	…
git-rerere.txt	…
git-reset.txt	doc: document --recurse-submodules for reset and restore	2020-04-06 13:42:43 -07:00
git-restore.txt	Merge branch 'es/restore-staged-from-head-by-default'	2020-05-08 14:25:08 -07:00
git-rev-list.txt	git-log.txt: include rev-list-description.txt	2020-07-08 22:08:54 -07:00
git-rev-parse.txt	…
git-revert.txt	cherry-pick/revert: honour --no-gpg-sign in all case	2020-04-03 11:37:22 -07:00
git-rm.txt	rm: support the --pathspec-from-file option	2020-02-19 10:56:49 -08:00
git-send-email.txt	…
git-send-pack.txt	…
git-sh-i18n--envsubst.txt	…
git-sh-i18n.txt	…
git-sh-setup.txt	…
git-shell.txt	…
git-shortlog.txt	…
git-show-branch.txt	…
git-show-index.txt	builtin/show-index: provide options to determine hash algo	2020-05-27 10:07:07 -07:00
git-show-ref.txt	…
git-show.txt	…
git-sparse-checkout.txt	Merge branch 'en/sparse-with-submodule-doc'	2020-06-22 15:55:03 -07:00
git-stage.txt	…
git-stash.txt	stash push: support the --pathspec-from-file option	2020-02-19 10:56:49 -08:00
git-status.txt	…
git-stripspace.txt	…
git-submodule.txt	submodule: fall back to remote's HEAD for missing remote.<name>.branch	2020-06-24 09:14:21 -07:00
git-svn.txt	…
git-switch.txt	doc: --recurse-submodules mostly applies to active submodules	2020-04-06 13:42:43 -07:00
git-symbolic-ref.txt	…
git-tag.txt	…
git-tools.txt	…
git-unpack-file.txt	…
git-unpack-objects.txt	…
git-update-index.txt	doc: dissuade users from trying to ignore tracked files	2020-01-22 12:27:49 -08:00
git-update-ref.txt	update-ref: implement interactive transaction handling	2020-04-02 11:09:49 -07:00
git-update-server-info.txt	…
git-upload-archive.txt	…
git-upload-pack.txt	…
git-var.txt	…
git-verify-commit.txt	…
git-verify-pack.txt	…
git-verify-tag.txt	…
git-web--browse.txt	…
git-whatchanged.txt	…
git-worktree.txt	git-worktree.txt: link to man pages when citing other Git commands	2020-08-03 21:32:41 -07:00
git-write-tree.txt	…
git.txt	git.txt: add list of guides	2020-08-04 18:34:02 -07:00
gitattributes.txt	userdiff: support Markdown	2020-05-02 18:04:12 -07:00
gitcli.txt	Merge branch 'jc/doc-single-h-is-for-help' into maint	2020-03-17 15:02:24 -07:00
gitcore-tutorial.txt	doc/gitcore-tutorial: fix prose to match example command	2020-01-08 08:56:40 -08:00
gitcredentials.txt	command-list.txt: add missing 'gitcredentials' and 'gitremote-helpers'	2020-08-04 18:34:01 -07:00
gitcvs-migration.txt	…
gitdiffcore.txt	…
giteveryday.txt	docs: adjust for the recent rename of `pu` to `seen`	2020-06-25 09:18:53 -07:00
gitfaq.txt	Merge branch 'ss/faq-ignore'	2020-05-26 09:32:08 -07:00
gitglossary.txt	…
githooks.txt	githooks.txt: use correct "reference-transaction" hook name	2020-07-24 13:53:58 -07:00
gitignore.txt	…
gitk.txt	doc: log, gitk: line-log arguments must exist in starting revision	2019-12-26 11:00:15 -08:00
gitmodules.txt	submodule: fall back to remote's HEAD for missing remote.<name>.branch	2020-06-24 09:14:21 -07:00
gitnamespaces.txt	…
gitremote-helpers.txt	Merge branch 'bc/sha-256-part-2'	2020-07-06 22:09:13 -07:00
gitrepository-layout.txt	…
gitrevisions.txt	…
gitsubmodules.txt	doc: list all commands affected by submodule.recurse	2020-04-06 13:42:43 -07:00
gittutorial-2.txt	…
gittutorial.txt	…
gitweb.conf.txt	…
gitweb.txt	…
gitworkflows.txt	gitworkflows.txt: fix broken subsection underline	2020-07-18 13:43:34 -07:00
glossary-content.txt	…
howto-index.sh	…
i18n.txt	…
install-doc-quick.sh	…
install-webdoc.sh	…
line-range-format.txt	…
lint-gitlink.perl	…
mailmap.txt	…
manpage-base-url.xsl.in	…
manpage-bold-literal.xsl	manpage-bold-literal.xsl: stop using git.docbook.backslash	2020-03-29 09:25:38 -07:00
manpage-normal.xsl	manpage-normal.xsl: fold in manpage-base.xsl	2020-03-29 09:25:38 -07:00
manpage-quote-apos.xsl	…
manpage.xsl	…
merge-options.txt	Merge branch 'dl/merge-autostash'	2020-04-29 16:15:27 -07:00
merge-strategies.txt	…
pretty-formats.txt	Merge branch 'mk/pb-pretty-email-without-domain-part-fix'	2020-07-06 22:09:15 -07:00
pretty-options.txt	Merge branch 'dl/pretty-reference'	2019-12-10 13:11:43 -08:00
pull-fetch-param.txt	pull doc: refer to a specific section in 'fetch' doc	2020-04-05 15:00:03 -07:00
rev-list-description.txt	git-log.txt: include rev-list-description.txt	2020-07-08 22:08:54 -07:00
rev-list-options.txt	rev-list-options.txt: start a list for `show-pulls`	2020-05-26 08:04:36 -07:00
revisions.txt	revisions.txt: describe 'rev1 rev2 ...' meaning for ranges	2020-07-08 22:08:53 -07:00
sequencer.txt	…
texi.xsl	…
trace2-target-values.txt	…
transfer-data-leaks.txt	…
urls-remotes.txt	…
urls.txt	…
user-manual.conf	user-manual.conf: don't specify [listingblock]	2020-03-31 16:08:02 -07:00
user-manual.txt	docs: adjust for the recent rename of `pu` to `seen`	2020-06-25 09:18:53 -07:00