| /* |
| * not really _using_ the compat macros, just make sure the_index |
| * declaration matches the definition in this file. |
| */ |
| #define USE_THE_INDEX_COMPATIBILITY_MACROS |
| #include "cache.h" |
| #include "repository.h" |
| #include "object-store.h" |
| #include "config.h" |
| #include "object.h" |
| #include "lockfile.h" |
| #include "submodule-config.h" |
| |
| /* The main repository */ |
| static struct repository the_repo; |
| struct repository *the_repository; |
| struct index_state the_index; |
| |
| void initialize_the_repository(void) |
| { |
| the_repository = &the_repo; |
| |
| the_repo.index = &the_index; |
| the_repo.objects = raw_object_store_new(); |
| the_repo.parsed_objects = parsed_object_pool_new(); |
| |
| repo_set_hash_algo(&the_repo, GIT_HASH_SHA1); |
| } |
| |
| static void expand_base_dir(char **out, const char *in, |
| const char *base_dir, const char *def_in) |
| { |
| free(*out); |
| if (in) |
| *out = xstrdup(in); |
| else |
| *out = xstrfmt("%s/%s", base_dir, def_in); |
| } |
| |
| static void repo_set_commondir(struct repository *repo, |
| const char *commondir) |
| { |
| struct strbuf sb = STRBUF_INIT; |
| |
| free(repo->commondir); |
| |
| if (commondir) { |
| repo->different_commondir = 1; |
| repo->commondir = xstrdup(commondir); |
| return; |
| } |
| |
| repo->different_commondir = get_common_dir_noenv(&sb, repo->gitdir); |
| repo->commondir = strbuf_detach(&sb, NULL); |
| } |
| |
| void repo_set_gitdir(struct repository *repo, |
| const char *root, |
| const struct set_gitdir_args *o) |
| { |
| const char *gitfile = read_gitfile(root); |
| /* |
| * repo->gitdir is saved because the caller could pass "root" |
| * that also points to repo->gitdir. We want to keep it alive |
| * until after xstrdup(root). Then we can free it. |
| */ |
| char *old_gitdir = repo->gitdir; |
| |
| repo->gitdir = xstrdup(gitfile ? gitfile : root); |
| free(old_gitdir); |
| |
| repo_set_commondir(repo, o->commondir); |
| |
| if (!repo->objects->odb) { |
| repo->objects->odb = xcalloc(1, sizeof(*repo->objects->odb)); |
| repo->objects->odb_tail = &repo->objects->odb->next; |
| } |
| expand_base_dir(&repo->objects->odb->path, o->object_dir, |
| repo->commondir, "objects"); |
| |
| free(repo->objects->alternate_db); |
| repo->objects->alternate_db = xstrdup_or_null(o->alternate_db); |
| expand_base_dir(&repo->graft_file, o->graft_file, |
| repo->commondir, "info/grafts"); |
| expand_base_dir(&repo->index_file, o->index_file, |
| repo->gitdir, "index"); |
| } |
| |
| void repo_set_hash_algo(struct repository *repo, int hash_algo) |
| { |
| repo->hash_algo = &hash_algos[hash_algo]; |
| #ifndef ENABLE_SHA256 |
| if (hash_algo != GIT_HASH_SHA1) |
| die(_("The hash algorithm %s is not supported in this build."), repo->hash_algo->name); |
| #endif |
| } |
| |
| /* |
| * Attempt to resolve and set the provided 'gitdir' for repository 'repo'. |
| * Return 0 upon success and a non-zero value upon failure. |
| */ |
| static int repo_init_gitdir(struct repository *repo, const char *gitdir) |
| { |
| int ret = 0; |
| int error = 0; |
| char *abspath = NULL; |
| const char *resolved_gitdir; |
| struct set_gitdir_args args = { NULL }; |
| |
| abspath = real_pathdup(gitdir, 0); |
| if (!abspath) { |
| ret = -1; |
| goto out; |
| } |
| |
| /* 'gitdir' must reference the gitdir directly */ |
| resolved_gitdir = resolve_gitdir_gently(abspath, &error); |
| if (!resolved_gitdir) { |
| ret = -1; |
| goto out; |
| } |
| |
| repo_set_gitdir(repo, resolved_gitdir, &args); |
| |
| out: |
| free(abspath); |
| return ret; |
| } |
| |
| void repo_set_worktree(struct repository *repo, const char *path) |
| { |
| repo->worktree = real_pathdup(path, 1); |
| |
| trace2_def_repo(repo); |
| } |
| |
| static int read_and_verify_repository_format(struct repository_format *format, |
| const char *commondir) |
| { |
| int ret = 0; |
| struct strbuf sb = STRBUF_INIT; |
| |
| strbuf_addf(&sb, "%s/config", commondir); |
| read_repository_format(format, sb.buf); |
| strbuf_reset(&sb); |
| |
| if (verify_repository_format(format, &sb) < 0) { |
| warning("%s", sb.buf); |
| ret = -1; |
| } |
| |
| strbuf_release(&sb); |
| return ret; |
| } |
| |
| /* |
| * Initialize 'repo' based on the provided 'gitdir'. |
| * Return 0 upon success and a non-zero value upon failure. |
| */ |
| int repo_init(struct repository *repo, |
| const char *gitdir, |
| const char *worktree) |
| { |
| struct repository_format format = REPOSITORY_FORMAT_INIT; |
| memset(repo, 0, sizeof(*repo)); |
| |
| repo->objects = raw_object_store_new(); |
| repo->parsed_objects = parsed_object_pool_new(); |
| |
| if (repo_init_gitdir(repo, gitdir)) |
| goto error; |
| |
| if (read_and_verify_repository_format(&format, repo->commondir)) |
| goto error; |
| |
| repo_set_hash_algo(repo, format.hash_algo); |
| |
| if (worktree) |
| repo_set_worktree(repo, worktree); |
| |
| clear_repository_format(&format); |
| return 0; |
| |
| error: |
| repo_clear(repo); |
| return -1; |
| } |
| |
| int repo_submodule_init(struct repository *subrepo, |
| struct repository *superproject, |
| const struct submodule *sub) |
| { |
| struct strbuf gitdir = STRBUF_INIT; |
| struct strbuf worktree = STRBUF_INIT; |
| int ret = 0; |
| |
| if (!sub) { |
| ret = -1; |
| goto out; |
| } |
| |
| strbuf_repo_worktree_path(&gitdir, superproject, "%s/.git", sub->path); |
| strbuf_repo_worktree_path(&worktree, superproject, "%s", sub->path); |
| |
| if (repo_init(subrepo, gitdir.buf, worktree.buf)) { |
| /* |
| * If initialization fails then it may be due to the submodule |
| * not being populated in the superproject's worktree. Instead |
| * we can try to initialize the submodule by finding it's gitdir |
| * in the superproject's 'modules' directory. In this case the |
| * submodule would not have a worktree. |
| */ |
| strbuf_reset(&gitdir); |
| strbuf_repo_git_path(&gitdir, superproject, |
| "modules/%s", sub->name); |
| |
| if (repo_init(subrepo, gitdir.buf, NULL)) { |
| ret = -1; |
| goto out; |
| } |
| } |
| |
| subrepo->submodule_prefix = xstrfmt("%s%s/", |
| superproject->submodule_prefix ? |
| superproject->submodule_prefix : |
| "", sub->path); |
| |
| out: |
| strbuf_release(&gitdir); |
| strbuf_release(&worktree); |
| return ret; |
| } |
| |
| void repo_clear(struct repository *repo) |
| { |
| FREE_AND_NULL(repo->gitdir); |
| FREE_AND_NULL(repo->commondir); |
| FREE_AND_NULL(repo->graft_file); |
| FREE_AND_NULL(repo->index_file); |
| FREE_AND_NULL(repo->worktree); |
| FREE_AND_NULL(repo->submodule_prefix); |
| |
| raw_object_store_clear(repo->objects); |
| FREE_AND_NULL(repo->objects); |
| |
| parsed_object_pool_clear(repo->parsed_objects); |
| FREE_AND_NULL(repo->parsed_objects); |
| |
| if (repo->config) { |
| git_configset_clear(repo->config); |
| FREE_AND_NULL(repo->config); |
| } |
| |
| if (repo->submodule_cache) { |
| submodule_cache_free(repo->submodule_cache); |
| repo->submodule_cache = NULL; |
| } |
| |
| if (repo->index) { |
| discard_index(repo->index); |
| if (repo->index != &the_index) |
| FREE_AND_NULL(repo->index); |
| } |
| } |
| |
| int repo_read_index(struct repository *repo) |
| { |
| if (!repo->index) |
| repo->index = xcalloc(1, sizeof(*repo->index)); |
| |
| return read_index_from(repo->index, repo->index_file, repo->gitdir); |
| } |
| |
| int repo_hold_locked_index(struct repository *repo, |
| struct lock_file *lf, |
| int flags) |
| { |
| if (!repo->index_file) |
| BUG("the repo hasn't been setup"); |
| return hold_lock_file_for_update(lf, repo->index_file, flags); |
| } |