From d897f2c16da9ab9588d2015121449d5bc54c9736 Mon Sep 17 00:00:00 2001 From: Caleb White Date: Fri, 29 Nov 2024 22:22:26 +0000 Subject: setup: correctly reinitialize repository version When reinitializing a repository, Git does not account for extensions other than `objectformat` and `refstorage` when determining the repository version. This can lead to a repository being downgraded to version 0 if extensions are set, causing Git future operations to fail. This patch teaches Git to check if other extensions are defined in the config to ensure that the repository version is set correctly. Signed-off-by: Caleb White Signed-off-by: Junio C Hamano --- setup.c | 32 +++++++++++++++++++++++--------- 1 file changed, 23 insertions(+), 9 deletions(-) (limited to 'setup.c') diff --git a/setup.c b/setup.c index 7b648de027..1e5c2eacb1 100644 --- a/setup.c +++ b/setup.c @@ -2204,8 +2204,8 @@ void initialize_repository_version(int hash_algo, enum ref_storage_format ref_storage_format, int reinit) { - char repo_version_string[10]; - int repo_version = GIT_REPO_VERSION; + struct strbuf repo_version = STRBUF_INIT; + int target_version = GIT_REPO_VERSION; /* * Note that we initialize the repository version to 1 when the ref @@ -2216,12 +2216,7 @@ void initialize_repository_version(int hash_algo, */ if (hash_algo != GIT_HASH_SHA1 || ref_storage_format != REF_STORAGE_FORMAT_FILES) - repo_version = GIT_REPO_VERSION_READ; - - /* This forces creation of new config file */ - xsnprintf(repo_version_string, sizeof(repo_version_string), - "%d", repo_version); - git_config_set("core.repositoryformatversion", repo_version_string); + target_version = GIT_REPO_VERSION_READ; if (hash_algo != GIT_HASH_SHA1 && hash_algo != GIT_HASH_UNKNOWN) git_config_set("extensions.objectformat", @@ -2234,6 +2229,25 @@ void initialize_repository_version(int hash_algo, ref_storage_format_to_name(ref_storage_format)); else if (reinit) git_config_set_gently("extensions.refstorage", NULL); + + if (reinit) { + struct strbuf config = STRBUF_INIT; + struct repository_format repo_fmt = REPOSITORY_FORMAT_INIT; + + strbuf_git_common_path(&config, the_repository, "config"); + read_repository_format(&repo_fmt, config.buf); + + if (repo_fmt.v1_only_extensions.nr) + target_version = GIT_REPO_VERSION_READ; + + strbuf_release(&config); + clear_repository_format(&repo_fmt); + } + + strbuf_addf(&repo_version, "%d", target_version); + git_config_set("core.repositoryformatversion", repo_version.buf); + + strbuf_release(&repo_version); } static int is_reinit(void) @@ -2333,7 +2347,7 @@ static int create_default_files(const char *template_path, adjust_shared_perm(repo_get_git_dir(the_repository)); } - initialize_repository_version(fmt->hash_algo, fmt->ref_storage_format, 0); + initialize_repository_version(fmt->hash_algo, fmt->ref_storage_format, reinit); /* Check filemode trustability */ path = git_path_buf(&buf, "config"); -- cgit v1.3 From 1860ba1a2a96c587fca1c294d8288accf9554096 Mon Sep 17 00:00:00 2001 From: Caleb White Date: Fri, 29 Nov 2024 22:22:34 +0000 Subject: worktree: add `relativeWorktrees` extension A new extension, `relativeWorktrees`, is added to indicate that at least one worktree in the repository has been linked with relative paths. This ensures older Git versions do not attempt to automatically prune worktrees with relative paths, as they would not not recognize the paths as being valid. Suggested-by: Junio C Hamano Signed-off-by: Caleb White Signed-off-by: Junio C Hamano --- Documentation/config/extensions.txt | 6 ++++++ repository.c | 1 + repository.h | 1 + setup.c | 7 +++++++ setup.h | 1 + 5 files changed, 16 insertions(+) (limited to 'setup.c') diff --git a/Documentation/config/extensions.txt b/Documentation/config/extensions.txt index 5dc569d1c9..5cb4721a0e 100644 --- a/Documentation/config/extensions.txt +++ b/Documentation/config/extensions.txt @@ -63,6 +63,12 @@ Note that this setting should only be set by linkgit:git-init[1] or linkgit:git-clone[1]. Trying to change it after initialization will not work and will produce hard-to-diagnose issues. +relativeWorktrees:: + If enabled, indicates at least one worktree has been linked with + relative paths. Automatically set if a worktree has been created or + repaired with either the `--relative-paths` option or with the + `worktree.useRelativePaths` config set to `true`. + worktreeConfig:: If enabled, then worktrees will load config settings from the `$GIT_DIR/config.worktree` file in addition to the diff --git a/repository.c b/repository.c index f988b8ae68..1a6a62bbd0 100644 --- a/repository.c +++ b/repository.c @@ -283,6 +283,7 @@ int repo_init(struct repository *repo, repo_set_compat_hash_algo(repo, format.compat_hash_algo); repo_set_ref_storage_format(repo, format.ref_storage_format); repo->repository_format_worktree_config = format.worktree_config; + repo->repository_format_relative_worktrees = format.relative_worktrees; /* take ownership of format.partial_clone */ repo->repository_format_partial_clone = format.partial_clone; diff --git a/repository.h b/repository.h index 24a66a496a..c4c92b2ab9 100644 --- a/repository.h +++ b/repository.h @@ -150,6 +150,7 @@ struct repository { /* Configurations */ int repository_format_worktree_config; + int repository_format_relative_worktrees; /* Indicate if a repository has a different 'commondir' from 'gitdir' */ unsigned different_commondir:1; diff --git a/setup.c b/setup.c index 1e5c2eacb1..39ff48d9dc 100644 --- a/setup.c +++ b/setup.c @@ -683,6 +683,9 @@ static enum extension_result handle_extension(const char *var, "extensions.refstorage", value); data->ref_storage_format = format; return EXTENSION_OK; + } else if (!strcmp(ext, "relativeworktrees")) { + data->relative_worktrees = git_config_bool(var, value); + return EXTENSION_OK; } return EXTENSION_UNKNOWN; } @@ -1854,6 +1857,8 @@ const char *setup_git_directory_gently(int *nongit_ok) repo_fmt.ref_storage_format); the_repository->repository_format_worktree_config = repo_fmt.worktree_config; + the_repository->repository_format_relative_worktrees = + repo_fmt.relative_worktrees; /* take ownership of repo_fmt.partial_clone */ the_repository->repository_format_partial_clone = repo_fmt.partial_clone; @@ -1950,6 +1955,8 @@ void check_repository_format(struct repository_format *fmt) fmt->ref_storage_format); the_repository->repository_format_worktree_config = fmt->worktree_config; + the_repository->repository_format_relative_worktrees = + fmt->relative_worktrees; the_repository->repository_format_partial_clone = xstrdup_or_null(fmt->partial_clone); clear_repository_format(&repo_fmt); diff --git a/setup.h b/setup.h index e496ab3e4d..18dc3b7368 100644 --- a/setup.h +++ b/setup.h @@ -129,6 +129,7 @@ struct repository_format { int precious_objects; char *partial_clone; /* value of extensions.partialclone */ int worktree_config; + int relative_worktrees; int is_bare; int hash_algo; int compat_hash_algo; -- cgit v1.3