diff options
Diffstat (limited to 'setup.c')
| -rw-r--r-- | setup.c | 344 |
1 files changed, 277 insertions, 67 deletions
@@ -7,16 +7,22 @@ #include "exec-cmd.h" #include "gettext.h" #include "hex.h" +#include "object-file.h" #include "object-name.h" #include "refs.h" +#include "replace-object.h" #include "repository.h" #include "config.h" #include "dir.h" #include "setup.h" +#include "shallow.h" #include "string-list.h" +#include "strvec.h" #include "chdir-notify.h" #include "path.h" #include "quote.h" +#include "tmp-objdir.h" +#include "trace.h" #include "trace2.h" #include "worktree.h" #include "exec-cmd.h" @@ -51,7 +57,7 @@ static int abspath_part_inside_repo(char *path) size_t wtlen; char *path0; int off; - const char *work_tree = precompose_string_if_needed(get_git_work_tree()); + const char *work_tree = precompose_string_if_needed(repo_get_work_tree(the_repository)); struct strbuf realpath = STRBUF_INIT; if (!work_tree) @@ -147,9 +153,9 @@ char *prefix_path(const char *prefix, int len, const char *path) { char *r = prefix_path_gently(prefix, len, NULL, path); if (!r) { - const char *hint_path = get_git_work_tree(); + const char *hint_path = repo_get_work_tree(the_repository); if (!hint_path) - hint_path = get_git_dir(); + hint_path = repo_get_git_dir(the_repository); die(_("'%s' is outside repository at '%s'"), path, absolute_path(hint_path)); } @@ -468,14 +474,14 @@ int is_nonbare_repository_dir(struct strbuf *path) int is_inside_git_dir(void) { if (inside_git_dir < 0) - inside_git_dir = is_inside_dir(get_git_dir()); + inside_git_dir = is_inside_dir(repo_get_git_dir(the_repository)); return inside_git_dir; } int is_inside_work_tree(void) { if (inside_work_tree < 0) - inside_work_tree = is_inside_dir(get_git_work_tree()); + inside_work_tree = is_inside_dir(repo_get_work_tree(the_repository)); return inside_work_tree; } @@ -490,7 +496,7 @@ void setup_work_tree(void) if (work_tree_config_is_bogus) die(_("unable to set up work tree using invalid config")); - work_tree = get_git_work_tree(); + work_tree = repo_get_work_tree(the_repository); if (!work_tree || chdir_notify(work_tree)) die(_("this operation must be run in a work tree")); @@ -518,7 +524,7 @@ static void setup_original_cwd(void) * directory we inherited from our parent process, which is a * directory we want to avoid removing. * - * For convience, we would like to have the path relative to the + * For convenience, we would like to have the path relative to the * worktree instead of an absolute path. * * Yes, startup_info->original_cwd is usually the same as 'prefix', @@ -547,7 +553,7 @@ static void setup_original_cwd(void) * Get our worktree; we only protect the current working directory * if it's in the worktree. */ - worktree = get_git_work_tree(); + worktree = repo_get_work_tree(the_repository); if (!worktree) goto no_prevention_needed; @@ -677,6 +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; } @@ -1062,9 +1071,9 @@ static const char *setup_explicit_git_dir(const char *gitdirenv, set_git_work_tree("."); /* set_git_work_tree() must have been called by now */ - worktree = get_git_work_tree(); + worktree = repo_get_work_tree(the_repository); - /* both get_git_work_tree() and cwd are already normalized */ + /* both repo_get_work_tree() and cwd are already normalized */ if (!strcmp(cwd->buf, worktree)) { /* cwd == worktree */ set_git_dir(gitdirenv, 0); free(gitfile); @@ -1215,7 +1224,7 @@ static int canonicalize_ceiling_entry(struct string_list_item *item, } struct safe_directory_data { - const char *path; + char *path; int is_safe; }; @@ -1235,17 +1244,45 @@ static int safe_directory_cb(const char *key, const char *value, char *allowed = NULL; if (!git_config_pathname(&allowed, key, value)) { - const char *check = allowed ? allowed : value; - if (ends_with(check, "/*")) { - size_t len = strlen(check); - if (!fspathncmp(check, data->path, len - 1)) + char *normalized = NULL; + + /* + * Setting safe.directory to a non-absolute path + * makes little sense---it won't be relative to + * the configuration file the item is defined in. + * Except for ".", which means "if we are at the top + * level of a repository, then it is OK", which is + * slightly tighter than "*" that allows discovery. + */ + if (!is_absolute_path(allowed) && strcmp(allowed, ".")) { + warning(_("safe.directory '%s' not absolute"), + allowed); + goto next; + } + + /* + * A .gitconfig in $HOME may be shared across + * different machines and safe.directory entries + * may or may not exist as paths on all of these + * machines. In other words, it is not a warning + * worthy event when there is no such path on this + * machine---the entry may be useful elsewhere. + */ + normalized = real_pathdup(allowed, 0); + if (!normalized) + goto next; + + if (ends_with(normalized, "/*")) { + size_t len = strlen(normalized); + if (!fspathncmp(normalized, data->path, len - 1)) data->is_safe = 1; - } else if (!fspathcmp(data->path, check)) { + } else if (!fspathcmp(data->path, normalized)) { data->is_safe = 1; } - } - if (allowed != value) + next: + free(normalized); free(allowed); + } } return 0; @@ -1263,9 +1300,7 @@ static int ensure_valid_ownership(const char *gitfile, const char *worktree, const char *gitdir, struct strbuf *report) { - struct safe_directory_data data = { - .path = worktree ? worktree : gitdir - }; + struct safe_directory_data data = { 0 }; if (!git_env_bool("GIT_TEST_ASSUME_DIFFERENT_OWNER", 0) && (!gitfile || is_path_owned_by_current_user(gitfile, report)) && @@ -1274,12 +1309,22 @@ static int ensure_valid_ownership(const char *gitfile, return 1; /* + * normalize the data.path for comparison with normalized paths + * that come from the configuration file. The path is unsafe + * if it cannot be normalized. + */ + data.path = real_pathdup(worktree ? worktree : gitdir, 0); + if (!data.path) + return 0; + + /* * data.path is the "path" that identifies the repository and it is * constant regardless of what failed above. data.is_safe should be * initialized to false, and might be changed by the callback. */ git_protected_config(safe_directory_cb, &data); + free(data.path); return data.is_safe; } @@ -1577,6 +1622,106 @@ enum discovery_result discover_git_directory_reason(struct strbuf *commondir, return result; } +void setup_git_env(const char *git_dir) +{ + char *git_replace_ref_base; + const char *shallow_file; + const char *replace_ref_base; + struct set_gitdir_args args = { NULL }; + struct strvec to_free = STRVEC_INIT; + + args.commondir = getenv_safe(&to_free, GIT_COMMON_DIR_ENVIRONMENT); + args.object_dir = getenv_safe(&to_free, DB_ENVIRONMENT); + args.graft_file = getenv_safe(&to_free, GRAFT_ENVIRONMENT); + args.index_file = getenv_safe(&to_free, INDEX_ENVIRONMENT); + args.alternate_db = getenv_safe(&to_free, ALTERNATE_DB_ENVIRONMENT); + if (getenv(GIT_QUARANTINE_ENVIRONMENT)) { + args.disable_ref_updates = 1; + } + + repo_set_gitdir(the_repository, git_dir, &args); + strvec_clear(&to_free); + + if (getenv(NO_REPLACE_OBJECTS_ENVIRONMENT)) + disable_replace_refs(); + replace_ref_base = getenv(GIT_REPLACE_REF_BASE_ENVIRONMENT); + git_replace_ref_base = xstrdup(replace_ref_base ? replace_ref_base + : "refs/replace/"); + update_ref_namespace(NAMESPACE_REPLACE, git_replace_ref_base); + + shallow_file = getenv(GIT_SHALLOW_FILE_ENVIRONMENT); + if (shallow_file) + set_alternate_shallow_file(the_repository, shallow_file, 0); + + if (git_env_bool(NO_LAZY_FETCH_ENVIRONMENT, 0)) + fetch_if_missing = 0; +} + +static void set_git_dir_1(const char *path) +{ + xsetenv(GIT_DIR_ENVIRONMENT, path, 1); + setup_git_env(path); +} + +static void update_relative_gitdir(const char *name UNUSED, + const char *old_cwd, + const char *new_cwd, + void *data UNUSED) +{ + char *path = reparent_relative_path(old_cwd, new_cwd, + repo_get_git_dir(the_repository)); + struct tmp_objdir *tmp_objdir = tmp_objdir_unapply_primary_odb(); + + trace_printf_key(&trace_setup_key, + "setup: move $GIT_DIR to '%s'", + path); + set_git_dir_1(path); + if (tmp_objdir) + tmp_objdir_reapply_primary_odb(tmp_objdir, old_cwd, new_cwd); + free(path); +} + +void set_git_dir(const char *path, int make_realpath) +{ + struct strbuf realpath = STRBUF_INIT; + + if (make_realpath) { + strbuf_realpath(&realpath, path, 1); + path = realpath.buf; + } + + set_git_dir_1(path); + if (!is_absolute_path(path)) + chdir_notify_register(NULL, update_relative_gitdir, NULL); + + strbuf_release(&realpath); +} + +static int git_work_tree_initialized; + +/* + * Note. This works only before you used a work tree. This was added + * primarily to support git-clone to work in a new repository it just + * created, and is not meant to flip between different work trees. + */ +void set_git_work_tree(const char *new_work_tree) +{ + if (git_work_tree_initialized) { + struct strbuf realpath = STRBUF_INIT; + + strbuf_realpath(&realpath, new_work_tree, 1); + new_work_tree = realpath.buf; + if (strcmp(new_work_tree, the_repository->worktree)) + die("internal error: work tree has already been set\n" + "Current worktree: %s\nNew worktree: %s", + the_repository->worktree, new_work_tree); + strbuf_release(&realpath); + return; + } + git_work_tree_initialized = 1; + repo_set_worktree(the_repository, new_work_tree); +} + const char *setup_git_directory_gently(int *nongit_ok) { static struct strbuf cwd = STRBUF_INIT; @@ -1712,6 +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; @@ -1800,7 +1947,7 @@ void check_repository_format(struct repository_format *fmt) struct repository_format repo_fmt = REPOSITORY_FORMAT_INIT; if (!fmt) fmt = &repo_fmt; - check_repository_format_gently(get_git_dir(), fmt, NULL); + check_repository_format_gently(repo_get_git_dir(the_repository), fmt, NULL); startup_info->have_repository = 1; repo_set_hash_algo(the_repository, fmt->hash_algo); repo_set_compat_hash_algo(the_repository, fmt->compat_hash_algo); @@ -1808,6 +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); @@ -1871,7 +2020,7 @@ struct template_dir_cb_data { }; static int template_dir_cb(const char *key, const char *value, - const struct config_context *ctx, void *d) + const struct config_context *ctx UNUSED, void *d) { struct template_dir_cb_data *data = d; @@ -2032,7 +2181,7 @@ static void copy_templates(const char *option_template) goto close_free_return; } - strbuf_addstr(&path, get_git_common_dir()); + strbuf_addstr(&path, repo_get_common_dir(the_repository)); strbuf_complete(&path, '/'); copy_templates_1(&path, &template_path, dir); close_free_return: @@ -2062,8 +2211,8 @@ 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 @@ -2074,12 +2223,7 @@ 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", @@ -2092,6 +2236,25 @@ 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) @@ -2156,7 +2319,7 @@ static int create_default_files(const char *template_path, char *path; int reinit; int filemode; - const char *work_tree = get_git_work_tree(); + const char *work_tree = repo_get_work_tree(the_repository); /* * First copy the templates -- we might have the default @@ -2188,10 +2351,10 @@ static int create_default_files(const char *template_path, * shared-repository settings, we would need to fix them up. */ if (get_shared_repository()) { - adjust_shared_perm(get_git_dir()); + 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"); @@ -2212,7 +2375,7 @@ static int create_default_files(const char *template_path, else { git_config_set("core.bare", "false"); /* allow template config file to override the default */ - if (log_all_ref_updates == LOG_REFS_UNSET) + if (repo_settings_get_log_all_ref_updates(the_repository) == LOG_REFS_UNSET) git_config_set("core.logallrefupdates", "true"); if (needs_work_tree_config(original_git_dir, work_tree)) git_config_set("core.worktree", work_tree); @@ -2246,7 +2409,7 @@ static void create_object_directory(void) struct strbuf path = STRBUF_INIT; size_t baselen; - strbuf_addstr(&path, get_object_directory()); + strbuf_addstr(&path, repo_get_object_directory(the_repository)); baselen = path.len; safe_create_dir(path.buf, 1); @@ -2278,20 +2441,73 @@ static void separate_git_dir(const char *git_dir, const char *git_link) if (rename(src, git_dir)) die_errno(_("unable to move %s to %s"), src, git_dir); - repair_worktrees(NULL, NULL); + repair_worktrees_after_gitdir_move(src); } write_file(git_link, "gitdir: %s", git_dir); } -static void validate_hash_algorithm(struct repository_format *repo_fmt, int hash) +struct default_format_config { + int hash; + enum ref_storage_format ref_format; +}; + +static int read_default_format_config(const char *key, const char *value, + const struct config_context *ctx UNUSED, + void *payload) +{ + struct default_format_config *cfg = payload; + char *str = NULL; + int ret; + + if (!strcmp(key, "init.defaultobjectformat")) { + ret = git_config_string(&str, key, value); + if (ret) + goto out; + cfg->hash = hash_algo_by_name(str); + if (cfg->hash == GIT_HASH_UNKNOWN) + warning(_("unknown hash algorithm '%s'"), str); + goto out; + } + + if (!strcmp(key, "init.defaultrefformat")) { + ret = git_config_string(&str, key, value); + if (ret) + goto out; + cfg->ref_format = ref_storage_format_by_name(str); + if (cfg->ref_format == REF_STORAGE_FORMAT_UNKNOWN) + warning(_("unknown ref storage format '%s'"), str); + goto out; + } + + ret = 0; +out: + free(str); + return ret; +} + +static void repository_format_configure(struct repository_format *repo_fmt, + int hash, enum ref_storage_format ref_format) { - const char *env = getenv(GIT_DEFAULT_HASH_ENVIRONMENT); + struct default_format_config cfg = { + .hash = GIT_HASH_UNKNOWN, + .ref_format = REF_STORAGE_FORMAT_UNKNOWN, + }; + struct config_options opts = { + .respect_includes = 1, + .ignore_repo = 1, + .ignore_worktree = 1, + }; + const char *env; + + config_with_options(read_default_format_config, &cfg, NULL, NULL, &opts); + /* * If we already have an initialized repo, don't allow the user to * specify a different algorithm, as that could cause corruption. * Otherwise, if the user has specified one on the command line, use it. */ + env = getenv(GIT_DEFAULT_HASH_ENVIRONMENT); if (repo_fmt->version >= 0 && hash != GIT_HASH_UNKNOWN && hash != repo_fmt->hash_algo) die(_("attempt to reinitialize repository with different hash")); else if (hash != GIT_HASH_UNKNOWN) @@ -2301,26 +2517,27 @@ static void validate_hash_algorithm(struct repository_format *repo_fmt, int hash if (env_algo == GIT_HASH_UNKNOWN) die(_("unknown hash algorithm '%s'"), env); repo_fmt->hash_algo = env_algo; + } else if (cfg.hash != GIT_HASH_UNKNOWN) { + repo_fmt->hash_algo = cfg.hash; } -} - -static void validate_ref_storage_format(struct repository_format *repo_fmt, - enum ref_storage_format format) -{ - const char *name = getenv("GIT_DEFAULT_REF_FORMAT"); + repo_set_hash_algo(the_repository, repo_fmt->hash_algo); + env = getenv("GIT_DEFAULT_REF_FORMAT"); if (repo_fmt->version >= 0 && - format != REF_STORAGE_FORMAT_UNKNOWN && - format != repo_fmt->ref_storage_format) { + ref_format != REF_STORAGE_FORMAT_UNKNOWN && + ref_format != repo_fmt->ref_storage_format) { die(_("attempt to reinitialize repository with different reference storage format")); - } else if (format != REF_STORAGE_FORMAT_UNKNOWN) { - repo_fmt->ref_storage_format = format; - } else if (name) { - format = ref_storage_format_by_name(name); - if (format == REF_STORAGE_FORMAT_UNKNOWN) - die(_("unknown ref storage format '%s'"), name); - repo_fmt->ref_storage_format = format; + } else if (ref_format != REF_STORAGE_FORMAT_UNKNOWN) { + repo_fmt->ref_storage_format = ref_format; + } else if (env) { + ref_format = ref_storage_format_by_name(env); + if (ref_format == REF_STORAGE_FORMAT_UNKNOWN) + die(_("unknown ref storage format '%s'"), env); + repo_fmt->ref_storage_format = ref_format; + } else if (cfg.ref_format != REF_STORAGE_FORMAT_UNKNOWN) { + repo_fmt->ref_storage_format = cfg.ref_format; } + repo_set_ref_storage_format(the_repository, repo_fmt->ref_storage_format); } int init_db(const char *git_dir, const char *real_git_dir, @@ -2344,31 +2561,24 @@ int init_db(const char *git_dir, const char *real_git_dir, die(_("%s already exists"), real_git_dir); set_git_dir(real_git_dir, 1); - git_dir = get_git_dir(); + git_dir = repo_get_git_dir(the_repository); separate_git_dir(git_dir, original_git_dir); } else { set_git_dir(git_dir, 1); - git_dir = get_git_dir(); + git_dir = repo_get_git_dir(the_repository); } startup_info->have_repository = 1; - /* Check to see if the repository version is right. + /* + * Check to see if the repository version is right. * Note that a newly created repository does not have * config file, so this will not fail. What we are catching * is an attempt to reinitialize new repository with an old tool. */ check_repository_format(&repo_fmt); - validate_hash_algorithm(&repo_fmt, hash); - validate_ref_storage_format(&repo_fmt, ref_storage_format); - - /* - * Now that we have set up both the hash algorithm and the ref storage - * format we can update the repository's settings accordingly. - */ - repo_set_hash_algo(the_repository, repo_fmt.hash_algo); - repo_set_ref_storage_format(the_repository, repo_fmt.ref_storage_format); + repository_format_configure(&repo_fmt, hash, ref_storage_format); /* * Ensure `core.hidedotfiles` is processed. This must happen after we |