diff options
Diffstat (limited to 'third_party/git/submodule.c')
| -rw-r--r-- | third_party/git/submodule.c | 2229 |
1 files changed, 0 insertions, 2229 deletions
diff --git a/third_party/git/submodule.c b/third_party/git/submodule.c deleted file mode 100644 index 0f199c5137..0000000000 --- a/third_party/git/submodule.c +++ /dev/null @@ -1,2229 +0,0 @@ - -#include "cache.h" -#include "repository.h" -#include "config.h" -#include "submodule-config.h" -#include "submodule.h" -#include "dir.h" -#include "diff.h" -#include "commit.h" -#include "revision.h" -#include "run-command.h" -#include "diffcore.h" -#include "refs.h" -#include "string-list.h" -#include "sha1-array.h" -#include "argv-array.h" -#include "blob.h" -#include "thread-utils.h" -#include "quote.h" -#include "remote.h" -#include "worktree.h" -#include "parse-options.h" -#include "object-store.h" -#include "commit-reach.h" - -static int config_update_recurse_submodules = RECURSE_SUBMODULES_OFF; -static int initialized_fetch_ref_tips; -static struct oid_array ref_tips_before_fetch; -static struct oid_array ref_tips_after_fetch; - -/* - * Check if the .gitmodules file is unmerged. Parsing of the .gitmodules file - * will be disabled because we can't guess what might be configured in - * .gitmodules unless the user resolves the conflict. - */ -int is_gitmodules_unmerged(const struct index_state *istate) -{ - int pos = index_name_pos(istate, GITMODULES_FILE, strlen(GITMODULES_FILE)); - if (pos < 0) { /* .gitmodules not found or isn't merged */ - pos = -1 - pos; - if (istate->cache_nr > pos) { /* there is a .gitmodules */ - const struct cache_entry *ce = istate->cache[pos]; - if (ce_namelen(ce) == strlen(GITMODULES_FILE) && - !strcmp(ce->name, GITMODULES_FILE)) - return 1; - } - } - - return 0; -} - -/* - * Check if the .gitmodules file is safe to write. - * - * Writing to the .gitmodules file requires that the file exists in the - * working tree or, if it doesn't, that a brand new .gitmodules file is going - * to be created (i.e. it's neither in the index nor in the current branch). - * - * It is not safe to write to .gitmodules if it's not in the working tree but - * it is in the index or in the current branch, because writing new values - * (and staging them) would blindly overwrite ALL the old content. - */ -int is_writing_gitmodules_ok(void) -{ - struct object_id oid; - return file_exists(GITMODULES_FILE) || - (get_oid(GITMODULES_INDEX, &oid) < 0 && get_oid(GITMODULES_HEAD, &oid) < 0); -} - -/* - * Check if the .gitmodules file has unstaged modifications. This must be - * checked before allowing modifications to the .gitmodules file with the - * intention to stage them later, because when continuing we would stage the - * modifications the user didn't stage herself too. That might change in a - * future version when we learn to stage the changes we do ourselves without - * staging any previous modifications. - */ -int is_staging_gitmodules_ok(struct index_state *istate) -{ - int pos = index_name_pos(istate, GITMODULES_FILE, strlen(GITMODULES_FILE)); - - if ((pos >= 0) && (pos < istate->cache_nr)) { - struct stat st; - if (lstat(GITMODULES_FILE, &st) == 0 && - ie_match_stat(istate, istate->cache[pos], &st, 0) & DATA_CHANGED) - return 0; - } - - return 1; -} - -static int for_each_remote_ref_submodule(const char *submodule, - each_ref_fn fn, void *cb_data) -{ - return refs_for_each_remote_ref(get_submodule_ref_store(submodule), - fn, cb_data); -} - -/* - * Try to update the "path" entry in the "submodule.<name>" section of the - * .gitmodules file. Return 0 only if a .gitmodules file was found, a section - * with the correct path=<oldpath> setting was found and we could update it. - */ -int update_path_in_gitmodules(const char *oldpath, const char *newpath) -{ - struct strbuf entry = STRBUF_INIT; - const struct submodule *submodule; - int ret; - - if (!file_exists(GITMODULES_FILE)) /* Do nothing without .gitmodules */ - return -1; - - if (is_gitmodules_unmerged(the_repository->index)) - die(_("Cannot change unmerged .gitmodules, resolve merge conflicts first")); - - submodule = submodule_from_path(the_repository, &null_oid, oldpath); - if (!submodule || !submodule->name) { - warning(_("Could not find section in .gitmodules where path=%s"), oldpath); - return -1; - } - strbuf_addstr(&entry, "submodule."); - strbuf_addstr(&entry, submodule->name); - strbuf_addstr(&entry, ".path"); - ret = config_set_in_gitmodules_file_gently(entry.buf, newpath); - strbuf_release(&entry); - return ret; -} - -/* - * Try to remove the "submodule.<name>" section from .gitmodules where the given - * path is configured. Return 0 only if a .gitmodules file was found, a section - * with the correct path=<path> setting was found and we could remove it. - */ -int remove_path_from_gitmodules(const char *path) -{ - struct strbuf sect = STRBUF_INIT; - const struct submodule *submodule; - - if (!file_exists(GITMODULES_FILE)) /* Do nothing without .gitmodules */ - return -1; - - if (is_gitmodules_unmerged(the_repository->index)) - die(_("Cannot change unmerged .gitmodules, resolve merge conflicts first")); - - submodule = submodule_from_path(the_repository, &null_oid, path); - if (!submodule || !submodule->name) { - warning(_("Could not find section in .gitmodules where path=%s"), path); - return -1; - } - strbuf_addstr(§, "submodule."); - strbuf_addstr(§, submodule->name); - if (git_config_rename_section_in_file(GITMODULES_FILE, sect.buf, NULL) < 0) { - /* Maybe the user already did that, don't error out here */ - warning(_("Could not remove .gitmodules entry for %s"), path); - strbuf_release(§); - return -1; - } - strbuf_release(§); - return 0; -} - -void stage_updated_gitmodules(struct index_state *istate) -{ - if (add_file_to_index(istate, GITMODULES_FILE, 0)) - die(_("staging updated .gitmodules failed")); -} - -/* TODO: remove this function, use repo_submodule_init instead. */ -int add_submodule_odb(const char *path) -{ - struct strbuf objects_directory = STRBUF_INIT; - int ret = 0; - - ret = strbuf_git_path_submodule(&objects_directory, path, "objects/"); - if (ret) - goto done; - if (!is_directory(objects_directory.buf)) { - ret = -1; - goto done; - } - add_to_alternates_memory(objects_directory.buf); -done: - strbuf_release(&objects_directory); - return ret; -} - -void set_diffopt_flags_from_submodule_config(struct diff_options *diffopt, - const char *path) -{ - const struct submodule *submodule = submodule_from_path(the_repository, - &null_oid, path); - if (submodule) { - const char *ignore; - char *key; - - key = xstrfmt("submodule.%s.ignore", submodule->name); - if (repo_config_get_string_const(the_repository, key, &ignore)) - ignore = submodule->ignore; - free(key); - - if (ignore) - handle_ignore_submodules_arg(diffopt, ignore); - else if (is_gitmodules_unmerged(the_repository->index)) - diffopt->flags.ignore_submodules = 1; - } -} - -/* Cheap function that only determines if we're interested in submodules at all */ -int git_default_submodule_config(const char *var, const char *value, void *cb) -{ - if (!strcmp(var, "submodule.recurse")) { - int v = git_config_bool(var, value) ? - RECURSE_SUBMODULES_ON : RECURSE_SUBMODULES_OFF; - config_update_recurse_submodules = v; - } - return 0; -} - -int option_parse_recurse_submodules_worktree_updater(const struct option *opt, - const char *arg, int unset) -{ - if (unset) { - config_update_recurse_submodules = RECURSE_SUBMODULES_OFF; - return 0; - } - if (arg) - config_update_recurse_submodules = - parse_update_recurse_submodules_arg(opt->long_name, - arg); - else - config_update_recurse_submodules = RECURSE_SUBMODULES_ON; - - return 0; -} - -/* - * Determine if a submodule has been initialized at a given 'path' - */ -int is_submodule_active(struct repository *repo, const char *path) -{ - int ret = 0; - char *key = NULL; - char *value = NULL; - const struct string_list *sl; - const struct submodule *module; - - module = submodule_from_path(repo, &null_oid, path); - - /* early return if there isn't a path->module mapping */ - if (!module) - return 0; - - /* submodule.<name>.active is set */ - key = xstrfmt("submodule.%s.active", module->name); - if (!repo_config_get_bool(repo, key, &ret)) { - free(key); - return ret; - } - free(key); - - /* submodule.active is set */ - sl = repo_config_get_value_multi(repo, "submodule.active"); - if (sl) { - struct pathspec ps; - struct argv_array args = ARGV_ARRAY_INIT; - const struct string_list_item *item; - - for_each_string_list_item(item, sl) { - argv_array_push(&args, item->string); - } - - parse_pathspec(&ps, 0, 0, NULL, args.argv); - ret = match_pathspec(repo->index, &ps, path, strlen(path), 0, NULL, 1); - - argv_array_clear(&args); - clear_pathspec(&ps); - return ret; - } - - /* fallback to checking if the URL is set */ - key = xstrfmt("submodule.%s.url", module->name); - ret = !repo_config_get_string(repo, key, &value); - - free(value); - free(key); - return ret; -} - -int is_submodule_populated_gently(const char *path, int *return_error_code) -{ - int ret = 0; - char *gitdir = xstrfmt("%s/.git", path); - - if (resolve_gitdir_gently(gitdir, return_error_code)) - ret = 1; - - free(gitdir); - return ret; -} - -/* - * Dies if the provided 'prefix' corresponds to an unpopulated submodule - */ -void die_in_unpopulated_submodule(const struct index_state *istate, - const char *prefix) -{ - int i, prefixlen; - - if (!prefix) - return; - - prefixlen = strlen(prefix); - - for (i = 0; i < istate->cache_nr; i++) { - struct cache_entry *ce = istate->cache[i]; - int ce_len = ce_namelen(ce); - - if (!S_ISGITLINK(ce->ce_mode)) - continue; - if (prefixlen <= ce_len) - continue; - if (strncmp(ce->name, prefix, ce_len)) - continue; - if (prefix[ce_len] != '/') - continue; - - die(_("in unpopulated submodule '%s'"), ce->name); - } -} - -/* - * Dies if any paths in the provided pathspec descends into a submodule - */ -void die_path_inside_submodule(const struct index_state *istate, - const struct pathspec *ps) -{ - int i, j; - - for (i = 0; i < istate->cache_nr; i++) { - struct cache_entry *ce = istate->cache[i]; - int ce_len = ce_namelen(ce); - - if (!S_ISGITLINK(ce->ce_mode)) - continue; - - for (j = 0; j < ps->nr ; j++) { - const struct pathspec_item *item = &ps->items[j]; - - if (item->len <= ce_len) - continue; - if (item->match[ce_len] != '/') - continue; - if (strncmp(ce->name, item->match, ce_len)) - continue; - if (item->len == ce_len + 1) - continue; - - die(_("Pathspec '%s' is in submodule '%.*s'"), - item->original, ce_len, ce->name); - } - } -} - -enum submodule_update_type parse_submodule_update_type(const char *value) -{ - if (!strcmp(value, "none")) - return SM_UPDATE_NONE; - else if (!strcmp(value, "checkout")) - return SM_UPDATE_CHECKOUT; - else if (!strcmp(value, "rebase")) - return SM_UPDATE_REBASE; - else if (!strcmp(value, "merge")) - return SM_UPDATE_MERGE; - else if (*value == '!') - return SM_UPDATE_COMMAND; - else - return SM_UPDATE_UNSPECIFIED; -} - -int parse_submodule_update_strategy(const char *value, - struct submodule_update_strategy *dst) -{ - enum submodule_update_type type; - - free((void*)dst->command); - dst->command = NULL; - - type = parse_submodule_update_type(value); - if (type == SM_UPDATE_UNSPECIFIED) - return -1; - - dst->type = type; - if (type == SM_UPDATE_COMMAND) - dst->command = xstrdup(value + 1); - - return 0; -} - -const char *submodule_strategy_to_string(const struct submodule_update_strategy *s) -{ - struct strbuf sb = STRBUF_INIT; - switch (s->type) { - case SM_UPDATE_CHECKOUT: - return "checkout"; - case SM_UPDATE_MERGE: - return "merge"; - case SM_UPDATE_REBASE: - return "rebase"; - case SM_UPDATE_NONE: - return "none"; - case SM_UPDATE_UNSPECIFIED: - return NULL; - case SM_UPDATE_COMMAND: - strbuf_addf(&sb, "!%s", s->command); - return strbuf_detach(&sb, NULL); - } - return NULL; -} - -void handle_ignore_submodules_arg(struct diff_options *diffopt, - const char *arg) -{ - diffopt->flags.ignore_submodules = 0; - diffopt->flags.ignore_untracked_in_submodules = 0; - diffopt->flags.ignore_dirty_submodules = 0; - - if (!strcmp(arg, "all")) - diffopt->flags.ignore_submodules = 1; - else if (!strcmp(arg, "untracked")) - diffopt->flags.ignore_untracked_in_submodules = 1; - else if (!strcmp(arg, "dirty")) - diffopt->flags.ignore_dirty_submodules = 1; - else if (strcmp(arg, "none")) - die("bad --ignore-submodules argument: %s", arg); - /* - * Please update _git_status() in git-completion.bash when you - * add new options - */ -} - -static int prepare_submodule_summary(struct rev_info *rev, const char *path, - struct commit *left, struct commit *right, - struct commit_list *merge_bases) -{ - struct commit_list *list; - - repo_init_revisions(the_repository, rev, NULL); - setup_revisions(0, NULL, rev, NULL); - rev->left_right = 1; - rev->first_parent_only = 1; - left->object.flags |= SYMMETRIC_LEFT; - add_pending_object(rev, &left->object, path); - add_pending_object(rev, &right->object, path); - for (list = merge_bases; list; list = list->next) { - list->item->object.flags |= UNINTERESTING; - add_pending_object(rev, &list->item->object, - oid_to_hex(&list->item->object.oid)); - } - return prepare_revision_walk(rev); -} - -static void print_submodule_summary(struct repository *r, struct rev_info *rev, struct diff_options *o) -{ - static const char format[] = " %m %s"; - struct strbuf sb = STRBUF_INIT; - struct commit *commit; - - while ((commit = get_revision(rev))) { - struct pretty_print_context ctx = {0}; - ctx.date_mode = rev->date_mode; - ctx.output_encoding = get_log_output_encoding(); - strbuf_setlen(&sb, 0); - repo_format_commit_message(r, commit, format, &sb, - &ctx); - strbuf_addch(&sb, '\n'); - if (commit->object.flags & SYMMETRIC_LEFT) - diff_emit_submodule_del(o, sb.buf); - else - diff_emit_submodule_add(o, sb.buf); - } - strbuf_release(&sb); -} - -static void prepare_submodule_repo_env_no_git_dir(struct argv_array *out) -{ - const char * const *var; - - for (var = local_repo_env; *var; var++) { - if (strcmp(*var, CONFIG_DATA_ENVIRONMENT)) - argv_array_push(out, *var); - } -} - -void prepare_submodule_repo_env(struct argv_array *out) -{ - prepare_submodule_repo_env_no_git_dir(out); - argv_array_pushf(out, "%s=%s", GIT_DIR_ENVIRONMENT, - DEFAULT_GIT_DIR_ENVIRONMENT); -} - -static void prepare_submodule_repo_env_in_gitdir(struct argv_array *out) -{ - prepare_submodule_repo_env_no_git_dir(out); - argv_array_pushf(out, "%s=.", GIT_DIR_ENVIRONMENT); -} - -/* - * Initialize a repository struct for a submodule based on the provided 'path'. - * - * Unlike repo_submodule_init, this tolerates submodules not present - * in .gitmodules. This function exists only to preserve historical behavior, - * - * Returns the repository struct on success, - * NULL when the submodule is not present. - */ -static struct repository *open_submodule(const char *path) -{ - struct strbuf sb = STRBUF_INIT; - struct repository *out = xmalloc(sizeof(*out)); - - if (submodule_to_gitdir(&sb, path) || repo_init(out, sb.buf, NULL)) { - strbuf_release(&sb); - free(out); - return NULL; - } - - /* Mark it as a submodule */ - out->submodule_prefix = xstrdup(path); - - strbuf_release(&sb); - return out; -} - -/* - * Helper function to display the submodule header line prior to the full - * summary output. - * - * If it can locate the submodule git directory it will create a repository - * handle for the submodule and lookup both the left and right commits and - * put them into the left and right pointers. - */ -static void show_submodule_header(struct diff_options *o, - const char *path, - struct object_id *one, struct object_id *two, - unsigned dirty_submodule, - struct repository *sub, - struct commit **left, struct commit **right, - struct commit_list **merge_bases) -{ - const char *message = NULL; - struct strbuf sb = STRBUF_INIT; - int fast_forward = 0, fast_backward = 0; - - if (dirty_submodule & DIRTY_SUBMODULE_UNTRACKED) - diff_emit_submodule_untracked(o, path); - - if (dirty_submodule & DIRTY_SUBMODULE_MODIFIED) - diff_emit_submodule_modified(o, path); - - if (is_null_oid(one)) - message = "(new submodule)"; - else if (is_null_oid(two)) - message = "(submodule deleted)"; - - if (!sub) { - if (!message) - message = "(commits not present)"; - goto output_header; - } - - /* - * Attempt to lookup the commit references, and determine if this is - * a fast forward or fast backwards update. - */ - *left = lookup_commit_reference(sub, one); - *right = lookup_commit_reference(sub, two); - - /* - * Warn about missing commits in the submodule project, but only if - * they aren't null. - */ - if ((!is_null_oid(one) && !*left) || - (!is_null_oid(two) && !*right)) - message = "(commits not present)"; - - *merge_bases = repo_get_merge_bases(sub, *left, *right); - if (*merge_bases) { - if ((*merge_bases)->item == *left) - fast_forward = 1; - else if ((*merge_bases)->item == *right) - fast_backward = 1; - } - - if (oideq(one, two)) { - strbuf_release(&sb); - return; - } - -output_header: - strbuf_addf(&sb, "Submodule %s ", path); - strbuf_add_unique_abbrev(&sb, one, DEFAULT_ABBREV); - strbuf_addstr(&sb, (fast_backward || fast_forward) ? ".." : "..."); - strbuf_add_unique_abbrev(&sb, two, DEFAULT_ABBREV); - if (message) - strbuf_addf(&sb, " %s\n", message); - else - strbuf_addf(&sb, "%s:\n", fast_backward ? " (rewind)" : ""); - diff_emit_submodule_header(o, sb.buf); - - strbuf_release(&sb); -} - -void show_submodule_summary(struct diff_options *o, const char *path, - struct object_id *one, struct object_id *two, - unsigned dirty_submodule) -{ - struct rev_info rev; - struct commit *left = NULL, *right = NULL; - struct commit_list *merge_bases = NULL; - struct repository *sub; - - sub = open_submodule(path); - show_submodule_header(o, path, one, two, dirty_submodule, - sub, &left, &right, &merge_bases); - - /* - * If we don't have both a left and a right pointer, there is no - * reason to try and display a summary. The header line should contain - * all the information the user needs. - */ - if (!left || !right || !sub) - goto out; - - /* Treat revision walker failure the same as missing commits */ - if (prepare_submodule_summary(&rev, path, left, right, merge_bases)) { - diff_emit_submodule_error(o, "(revision walker failed)\n"); - goto out; - } - - print_submodule_summary(sub, &rev, o); - -out: - if (merge_bases) - free_commit_list(merge_bases); - clear_commit_marks(left, ~0); - clear_commit_marks(right, ~0); - if (sub) { - repo_clear(sub); - free(sub); - } -} - -void show_submodule_inline_diff(struct diff_options *o, const char *path, - struct object_id *one, struct object_id *two, - unsigned dirty_submodule) -{ - const struct object_id *old_oid = the_hash_algo->empty_tree, *new_oid = the_hash_algo->empty_tree; - struct commit *left = NULL, *right = NULL; - struct commit_list *merge_bases = NULL; - struct child_process cp = CHILD_PROCESS_INIT; - struct strbuf sb = STRBUF_INIT; - struct repository *sub; - - sub = open_submodule(path); - show_submodule_header(o, path, one, two, dirty_submodule, - sub, &left, &right, &merge_bases); - - /* We need a valid left and right commit to display a difference */ - if (!(left || is_null_oid(one)) || - !(right || is_null_oid(two))) - goto done; - - if (left) - old_oid = one; - if (right) - new_oid = two; - - cp.git_cmd = 1; - cp.dir = path; - cp.out = -1; - cp.no_stdin = 1; - - /* TODO: other options may need to be passed here. */ - argv_array_pushl(&cp.args, "diff", "--submodule=diff", NULL); - argv_array_pushf(&cp.args, "--color=%s", want_color(o->use_color) ? - "always" : "never"); - - if (o->flags.reverse_diff) { - argv_array_pushf(&cp.args, "--src-prefix=%s%s/", - o->b_prefix, path); - argv_array_pushf(&cp.args, "--dst-prefix=%s%s/", - o->a_prefix, path); - } else { - argv_array_pushf(&cp.args, "--src-prefix=%s%s/", - o->a_prefix, path); - argv_array_pushf(&cp.args, "--dst-prefix=%s%s/", - o->b_prefix, path); - } - argv_array_push(&cp.args, oid_to_hex(old_oid)); - /* - * If the submodule has modified content, we will diff against the - * work tree, under the assumption that the user has asked for the - * diff format and wishes to actually see all differences even if they - * haven't yet been committed to the submodule yet. - */ - if (!(dirty_submodule & DIRTY_SUBMODULE_MODIFIED)) - argv_array_push(&cp.args, oid_to_hex(new_oid)); - - prepare_submodule_repo_env(&cp.env_array); - if (start_command(&cp)) - diff_emit_submodule_error(o, "(diff failed)\n"); - - while (strbuf_getwholeline_fd(&sb, cp.out, '\n') != EOF) - diff_emit_submodule_pipethrough(o, sb.buf, sb.len); - - if (finish_command(&cp)) - diff_emit_submodule_error(o, "(diff failed)\n"); - -done: - strbuf_release(&sb); - if (merge_bases) - free_commit_list(merge_bases); - if (left) - clear_commit_marks(left, ~0); - if (right) - clear_commit_marks(right, ~0); - if (sub) { - repo_clear(sub); - free(sub); - } -} - -int should_update_submodules(void) -{ - return config_update_recurse_submodules == RECURSE_SUBMODULES_ON; -} - -const struct submodule *submodule_from_ce(const struct cache_entry *ce) -{ - if (!S_ISGITLINK(ce->ce_mode)) - return NULL; - - if (!should_update_submodules()) - return NULL; - - return submodule_from_path(the_repository, &null_oid, ce->name); -} - -static struct oid_array *submodule_commits(struct string_list *submodules, - const char *name) -{ - struct string_list_item *item; - - item = string_list_insert(submodules, name); - if (item->util) - return (struct oid_array *) item->util; - - /* NEEDSWORK: should we have oid_array_init()? */ - item->util = xcalloc(1, sizeof(struct oid_array)); - return (struct oid_array *) item->util; -} - -struct collect_changed_submodules_cb_data { - struct repository *repo; - struct string_list *changed; - const struct object_id *commit_oid; -}; - -/* - * this would normally be two functions: default_name_from_path() and - * path_from_default_name(). Since the default name is the same as - * the submodule path we can get away with just one function which only - * checks whether there is a submodule in the working directory at that - * location. - */ -static const char *default_name_or_path(const char *path_or_name) -{ - int error_code; - - if (!is_submodule_populated_gently(path_or_name, &error_code)) - return NULL; - - return path_or_name; -} - -static void collect_changed_submodules_cb(struct diff_queue_struct *q, - struct diff_options *options, - void *data) -{ - struct collect_changed_submodules_cb_data *me = data; - struct string_list *changed = me->changed; - const struct object_id *commit_oid = me->commit_oid; - int i; - - for (i = 0; i < q->nr; i++) { - struct diff_filepair *p = q->queue[i]; - struct oid_array *commits; - const struct submodule *submodule; - const char *name; - - if (!S_ISGITLINK(p->two->mode)) - continue; - - submodule = submodule_from_path(me->repo, - commit_oid, p->two->path); - if (submodule) - name = submodule->name; - else { - name = default_name_or_path(p->two->path); - /* make sure name does not collide with existing one */ - if (name) - submodule = submodule_from_name(me->repo, - commit_oid, name); - if (submodule) { - warning("Submodule in commit %s at path: " - "'%s' collides with a submodule named " - "the same. Skipping it.", - oid_to_hex(commit_oid), p->two->path); - name = NULL; - } - } - - if (!name) - continue; - - commits = submodule_commits(changed, name); - oid_array_append(commits, &p->two->oid); - } -} - -/* - * Collect the paths of submodules in 'changed' which have changed based on - * the revisions as specified in 'argv'. Each entry in 'changed' will also - * have a corresponding 'struct oid_array' (in the 'util' field) which lists - * what the submodule pointers were updated to during the change. - */ -static void collect_changed_submodules(struct repository *r, - struct string_list *changed, - struct argv_array *argv) -{ - struct rev_info rev; - const struct commit *commit; - - repo_init_revisions(r, &rev, NULL); - setup_revisions(argv->argc, argv->argv, &rev, NULL); - if (prepare_revision_walk(&rev)) - die("revision walk setup failed"); - - while ((commit = get_revision(&rev))) { - struct rev_info diff_rev; - struct collect_changed_submodules_cb_data data; - data.repo = r; - data.changed = changed; - data.commit_oid = &commit->object.oid; - - repo_init_revisions(r, &diff_rev, NULL); - diff_rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK; - diff_rev.diffopt.format_callback = collect_changed_submodules_cb; - diff_rev.diffopt.format_callback_data = &data; - diff_tree_combined_merge(commit, 1, &diff_rev); - } - - reset_revision_walk(); -} - -static void free_submodules_oids(struct string_list *submodules) -{ - struct string_list_item *item; - for_each_string_list_item(item, submodules) - oid_array_clear((struct oid_array *) item->util); - string_list_clear(submodules, 1); -} - -static int has_remote(const char *refname, const struct object_id *oid, - int flags, void *cb_data) -{ - return 1; -} - -static int append_oid_to_argv(const struct object_id *oid, void *data) -{ - struct argv_array *argv = data; - argv_array_push(argv, oid_to_hex(oid)); - return 0; -} - -struct has_commit_data { - struct repository *repo; - int result; - const char *path; -}; - -static int check_has_commit(const struct object_id *oid, void *data) -{ - struct has_commit_data *cb = data; - - enum object_type type = oid_object_info(cb->repo, oid, NULL); - - switch (type) { - case OBJ_COMMIT: - return 0; - case OBJ_BAD: - /* - * Object is missing or invalid. If invalid, an error message - * has already been printed. - */ - cb->result = 0; - return 0; - default: - die(_("submodule entry '%s' (%s) is a %s, not a commit"), - cb->path, oid_to_hex(oid), type_name(type)); - } -} - -static int submodule_has_commits(struct repository *r, - const char *path, - struct oid_array *commits) -{ - struct has_commit_data has_commit = { r, 1, path }; - - /* - * Perform a cheap, but incorrect check for the existence of 'commits'. - * This is done by adding the submodule's object store to the in-core - * object store, and then querying for each commit's existence. If we - * do not have the commit object anywhere, there is no chance we have - * it in the object store of the correct submodule and have it - * reachable from a ref, so we can fail early without spawning rev-list - * which is expensive. - */ - if (add_submodule_odb(path)) - return 0; - - oid_array_for_each_unique(commits, check_has_commit, &has_commit); - - if (has_commit.result) { - /* - * Even if the submodule is checked out and the commit is - * present, make sure it exists in the submodule's object store - * and that it is reachable from a ref. - */ - struct child_process cp = CHILD_PROCESS_INIT; - struct strbuf out = STRBUF_INIT; - - argv_array_pushl(&cp.args, "rev-list", "-n", "1", NULL); - oid_array_for_each_unique(commits, append_oid_to_argv, &cp.args); - argv_array_pushl(&cp.args, "--not", "--all", NULL); - - prepare_submodule_repo_env(&cp.env_array); - cp.git_cmd = 1; - cp.no_stdin = 1; - cp.dir = path; - - if (capture_command(&cp, &out, GIT_MAX_HEXSZ + 1) || out.len) - has_commit.result = 0; - - strbuf_release(&out); - } - - return has_commit.result; -} - -static int submodule_needs_pushing(struct repository *r, - const char *path, - struct oid_array *commits) -{ - if (!submodule_has_commits(r, path, commits)) - /* - * NOTE: We do consider it safe to return "no" here. The - * correct answer would be "We do not know" instead of - * "No push needed", but it is quite hard to change - * the submodule pointer without having the submodule - * around. If a user did however change the submodules - * without having the submodule around, this indicates - * an expert who knows what they are doing or a - * maintainer integrating work from other people. In - * both cases it should be safe to skip this check. - */ - return 0; - - if (for_each_remote_ref_submodule(path, has_remote, NULL) > 0) { - struct child_process cp = CHILD_PROCESS_INIT; - struct strbuf buf = STRBUF_INIT; - int needs_pushing = 0; - - argv_array_push(&cp.args, "rev-list"); - oid_array_for_each_unique(commits, append_oid_to_argv, &cp.args); - argv_array_pushl(&cp.args, "--not", "--remotes", "-n", "1" , NULL); - - prepare_submodule_repo_env(&cp.env_array); - cp.git_cmd = 1; - cp.no_stdin = 1; - cp.out = -1; - cp.dir = path; - if (start_command(&cp)) - die("Could not run 'git rev-list <commits> --not --remotes -n 1' command in submodule %s", - path); - if (strbuf_read(&buf, cp.out, the_hash_algo->hexsz + 1)) - needs_pushing = 1; - finish_command(&cp); - close(cp.out); - strbuf_release(&buf); - return needs_pushing; - } - - return 0; -} - -int find_unpushed_submodules(struct repository *r, - struct oid_array *commits, - const char *remotes_name, - struct string_list *needs_pushing) -{ - struct string_list submodules = STRING_LIST_INIT_DUP; - struct string_list_item *name; - struct argv_array argv = ARGV_ARRAY_INIT; - - /* argv.argv[0] will be ignored by setup_revisions */ - argv_array_push(&argv, "find_unpushed_submodules"); - oid_array_for_each_unique(commits, append_oid_to_argv, &argv); - argv_array_push(&argv, "--not"); - argv_array_pushf(&argv, "--remotes=%s", remotes_name); - - collect_changed_submodules(r, &submodules, &argv); - - for_each_string_list_item(name, &submodules) { - struct oid_array *commits = name->util; - const struct submodule *submodule; - const char *path = NULL; - - submodule = submodule_from_name(r, &null_oid, name->string); - if (submodule) - path = submodule->path; - else - path = default_name_or_path(name->string); - - if (!path) - continue; - - if (submodule_needs_pushing(r, path, commits)) - string_list_insert(needs_pushing, path); - } - - free_submodules_oids(&submodules); - argv_array_clear(&argv); - - return needs_pushing->nr; -} - -static int push_submodule(const char *path, - const struct remote *remote, - const struct refspec *rs, - const struct string_list *push_options, - int dry_run) -{ - if (for_each_remote_ref_submodule(path, has_remote, NULL) > 0) { - struct child_process cp = CHILD_PROCESS_INIT; - argv_array_push(&cp.args, "push"); - if (dry_run) - argv_array_push(&cp.args, "--dry-run"); - - if (push_options && push_options->nr) { - const struct string_list_item *item; - for_each_string_list_item(item, push_options) - argv_array_pushf(&cp.args, "--push-option=%s", - item->string); - } - - if (remote->origin != REMOTE_UNCONFIGURED) { - int i; - argv_array_push(&cp.args, remote->name); - for (i = 0; i < rs->raw_nr; i++) - argv_array_push(&cp.args, rs->raw[i]); - } - - prepare_submodule_repo_env(&cp.env_array); - cp.git_cmd = 1; - cp.no_stdin = 1; - cp.dir = path; - if (run_command(&cp)) - return 0; - close(cp.out); - } - - return 1; -} - -/* - * Perform a check in the submodule to see if the remote and refspec work. - * Die if the submodule can't be pushed. - */ -static void submodule_push_check(const char *path, const char *head, - const struct remote *remote, - const struct refspec *rs) -{ - struct child_process cp = CHILD_PROCESS_INIT; - int i; - - argv_array_push(&cp.args, "submodule--helper"); - argv_array_push(&cp.args, "push-check"); - argv_array_push(&cp.args, head); - argv_array_push(&cp.args, remote->name); - - for (i = 0; i < rs->raw_nr; i++) - argv_array_push(&cp.args, rs->raw[i]); - - prepare_submodule_repo_env(&cp.env_array); - cp.git_cmd = 1; - cp.no_stdin = 1; - cp.no_stdout = 1; - cp.dir = path; - - /* - * Simply indicate if 'submodule--helper push-check' failed. - * More detailed error information will be provided by the - * child process. - */ - if (run_command(&cp)) - die("process for submodule '%s' failed", path); -} - -int push_unpushed_submodules(struct repository *r, - struct oid_array *commits, - const struct remote *remote, - const struct refspec *rs, - const struct string_list *push_options, - int dry_run) -{ - int i, ret = 1; - struct string_list needs_pushing = STRING_LIST_INIT_DUP; - - if (!find_unpushed_submodules(r, commits, - remote->name, &needs_pushing)) - return 1; - - /* - * Verify that the remote and refspec can be propagated to all - * submodules. This check can be skipped if the remote and refspec - * won't be propagated due to the remote being unconfigured (e.g. a URL - * instead of a remote name). - */ - if (remote->origin != REMOTE_UNCONFIGURED) { - char *head; - struct object_id head_oid; - - head = resolve_refdup("HEAD", 0, &head_oid, NULL); - if (!head) - die(_("Failed to resolve HEAD as a valid ref.")); - - for (i = 0; i < needs_pushing.nr; i++) - submodule_push_check(needs_pushing.items[i].string, - head, remote, rs); - free(head); - } - - /* Actually push the submodules */ - for (i = 0; i < needs_pushing.nr; i++) { - const char *path = needs_pushing.items[i].string; - fprintf(stderr, "Pushing submodule '%s'\n", path); - if (!push_submodule(path, remote, rs, - push_options, dry_run)) { - fprintf(stderr, "Unable to push submodule '%s'\n", path); - ret = 0; - } - } - - string_list_clear(&needs_pushing, 0); - - return ret; -} - -static int append_oid_to_array(const char *ref, const struct object_id *oid, - int flags, void *data) -{ - struct oid_array *array = data; - oid_array_append(array, oid); - return 0; -} - -void check_for_new_submodule_commits(struct object_id *oid) -{ - if (!initialized_fetch_ref_tips) { - for_each_ref(append_oid_to_array, &ref_tips_before_fetch); - initialized_fetch_ref_tips = 1; - } - - oid_array_append(&ref_tips_after_fetch, oid); -} - -static void calculate_changed_submodule_paths(struct repository *r, - struct string_list *changed_submodule_names) -{ - struct argv_array argv = ARGV_ARRAY_INIT; - struct string_list_item *name; - - /* No need to check if there are no submodules configured */ - if (!submodule_from_path(r, NULL, NULL)) - return; - - argv_array_push(&argv, "--"); /* argv[0] program name */ - oid_array_for_each_unique(&ref_tips_after_fetch, - append_oid_to_argv, &argv); - argv_array_push(&argv, "--not"); - oid_array_for_each_unique(&ref_tips_before_fetch, - append_oid_to_argv, &argv); - - /* - * Collect all submodules (whether checked out or not) for which new - * commits have been recorded upstream in "changed_submodule_names". - */ - collect_changed_submodules(r, changed_submodule_names, &argv); - - for_each_string_list_item(name, changed_submodule_names) { - struct oid_array *commits = name->util; - const struct submodule *submodule; - const char *path = NULL; - - submodule = submodule_from_name(r, &null_oid, name->string); - if (submodule) - path = submodule->path; - else - path = default_name_or_path(name->string); - - if (!path) - continue; - - if (submodule_has_commits(r, path, commits)) { - oid_array_clear(commits); - *name->string = '\0'; - } - } - - string_list_remove_empty_items(changed_submodule_names, 1); - - argv_array_clear(&argv); - oid_array_clear(&ref_tips_before_fetch); - oid_array_clear(&ref_tips_after_fetch); - initialized_fetch_ref_tips = 0; -} - -int submodule_touches_in_range(struct repository *r, - struct object_id *excl_oid, - struct object_id *incl_oid) -{ - struct string_list subs = STRING_LIST_INIT_DUP; - struct argv_array args = ARGV_ARRAY_INIT; - int ret; - - /* No need to check if there are no submodules configured */ - if (!submodule_from_path(r, NULL, NULL)) - return 0; - - argv_array_push(&args, "--"); /* args[0] program name */ - argv_array_push(&args, oid_to_hex(incl_oid)); - if (!is_null_oid(excl_oid)) { - argv_array_push(&args, "--not"); - argv_array_push(&args, oid_to_hex(excl_oid)); - } - - collect_changed_submodules(r, &subs, &args); - ret = subs.nr; - - argv_array_clear(&args); - - free_submodules_oids(&subs); - return ret; -} - -struct submodule_parallel_fetch { - int count; - struct argv_array args; - struct repository *r; - const char *prefix; - int command_line_option; - int default_option; - int quiet; - int result; - - struct string_list changed_submodule_names; - - /* Pending fetches by OIDs */ - struct fetch_task **oid_fetch_tasks; - int oid_fetch_tasks_nr, oid_fetch_tasks_alloc; -}; -#define SPF_INIT {0, ARGV_ARRAY_INIT, NULL, NULL, 0, 0, 0, 0, \ - STRING_LIST_INIT_DUP, \ - NULL, 0, 0} - -static int get_fetch_recurse_config(const struct submodule *submodule, - struct submodule_parallel_fetch *spf) -{ - if (spf->command_line_option != RECURSE_SUBMODULES_DEFAULT) - return spf->command_line_option; - - if (submodule) { - char *key; - const char *value; - - int fetch_recurse = submodule->fetch_recurse; - key = xstrfmt("submodule.%s.fetchRecurseSubmodules", submodule->name); - if (!repo_config_get_string_const(spf->r, key, &value)) { - fetch_recurse = parse_fetch_recurse_submodules_arg(key, value); - } - free(key); - - if (fetch_recurse != RECURSE_SUBMODULES_NONE) - /* local config overrules everything except commandline */ - return fetch_recurse; - } - - return spf->default_option; -} - -/* - * Fetch in progress (if callback data) or - * pending (if in oid_fetch_tasks in struct submodule_parallel_fetch) - */ -struct fetch_task { - struct repository *repo; - const struct submodule *sub; - unsigned free_sub : 1; /* Do we need to free the submodule? */ - - struct oid_array *commits; /* Ensure these commits are fetched */ -}; - -/** - * When a submodule is not defined in .gitmodules, we cannot access it - * via the regular submodule-config. Create a fake submodule, which we can - * work on. - */ -static const struct submodule *get_non_gitmodules_submodule(const char *path) -{ - struct submodule *ret = NULL; - const char *name = default_name_or_path(path); - - if (!name) - return NULL; - - ret = xmalloc(sizeof(*ret)); - memset(ret, 0, sizeof(*ret)); - ret->path = name; - ret->name = name; - - return (const struct submodule *) ret; -} - -static struct fetch_task *fetch_task_create(struct repository *r, - const char *path) -{ - struct fetch_task *task = xmalloc(sizeof(*task)); - memset(task, 0, sizeof(*task)); - - task->sub = submodule_from_path(r, &null_oid, path); - if (!task->sub) { - /* - * No entry in .gitmodules? Technically not a submodule, - * but historically we supported repositories that happen to be - * in-place where a gitlink is. Keep supporting them. - */ - task->sub = get_non_gitmodules_submodule(path); - if (!task->sub) { - free(task); - return NULL; - } - - task->free_sub = 1; - } - - return task; -} - -static void fetch_task_release(struct fetch_task *p) -{ - if (p->free_sub) - free((void*)p->sub); - p->free_sub = 0; - p->sub = NULL; - - if (p->repo) - repo_clear(p->repo); - FREE_AND_NULL(p->repo); -} - -static struct repository *get_submodule_repo_for(struct repository *r, - const struct submodule *sub) -{ - struct repository *ret = xmalloc(sizeof(*ret)); - - if (repo_submodule_init(ret, r, sub)) { - /* - * No entry in .gitmodules? Technically not a submodule, - * but historically we supported repositories that happen to be - * in-place where a gitlink is. Keep supporting them. - */ - struct strbuf gitdir = STRBUF_INIT; - strbuf_repo_worktree_path(&gitdir, r, "%s/.git", sub->path); - if (repo_init(ret, gitdir.buf, NULL)) { - strbuf_release(&gitdir); - free(ret); - return NULL; - } - strbuf_release(&gitdir); - } - - return ret; -} - -static int get_next_submodule(struct child_process *cp, - struct strbuf *err, void *data, void **task_cb) -{ - struct submodule_parallel_fetch *spf = data; - - for (; spf->count < spf->r->index->cache_nr; spf->count++) { - const struct cache_entry *ce = spf->r->index->cache[spf->count]; - const char *default_argv; - struct fetch_task *task; - - if (!S_ISGITLINK(ce->ce_mode)) - continue; - - task = fetch_task_create(spf->r, ce->name); - if (!task) - continue; - - switch (get_fetch_recurse_config(task->sub, spf)) - { - default: - case RECURSE_SUBMODULES_DEFAULT: - case RECURSE_SUBMODULES_ON_DEMAND: - if (!task->sub || - !string_list_lookup( - &spf->changed_submodule_names, - task->sub->name)) - continue; - default_argv = "on-demand"; - break; - case RECURSE_SUBMODULES_ON: - default_argv = "yes"; - break; - case RECURSE_SUBMODULES_OFF: - continue; - } - - task->repo = get_submodule_repo_for(spf->r, task->sub); - if (task->repo) { - struct strbuf submodule_prefix = STRBUF_INIT; - child_process_init(cp); - cp->dir = task->repo->gitdir; - prepare_submodule_repo_env_in_gitdir(&cp->env_array); - cp->git_cmd = 1; - if (!spf->quiet) - strbuf_addf(err, "Fetching submodule %s%s\n", - spf->prefix, ce->name); - argv_array_init(&cp->args); - argv_array_pushv(&cp->args, spf->args.argv); - argv_array_push(&cp->args, default_argv); - argv_array_push(&cp->args, "--submodule-prefix"); - - strbuf_addf(&submodule_prefix, "%s%s/", - spf->prefix, - task->sub->path); - argv_array_push(&cp->args, submodule_prefix.buf); - - spf->count++; - *task_cb = task; - - strbuf_release(&submodule_prefix); - return 1; - } else { - - fetch_task_release(task); - free(task); - - /* - * An empty directory is normal, - * the submodule is not initialized - */ - if (S_ISGITLINK(ce->ce_mode) && - !is_empty_dir(ce->name)) { - spf->result = 1; - strbuf_addf(err, - _("Could not access submodule '%s'"), - ce->name); - } - } - } - - if (spf->oid_fetch_tasks_nr) { - struct fetch_task *task = - spf->oid_fetch_tasks[spf->oid_fetch_tasks_nr - 1]; - struct strbuf submodule_prefix = STRBUF_INIT; - spf->oid_fetch_tasks_nr--; - - strbuf_addf(&submodule_prefix, "%s%s/", - spf->prefix, task->sub->path); - - child_process_init(cp); - prepare_submodule_repo_env_in_gitdir(&cp->env_array); - cp->git_cmd = 1; - cp->dir = task->repo->gitdir; - - argv_array_init(&cp->args); - argv_array_pushv(&cp->args, spf->args.argv); - argv_array_push(&cp->args, "on-demand"); - argv_array_push(&cp->args, "--submodule-prefix"); - argv_array_push(&cp->args, submodule_prefix.buf); - - /* NEEDSWORK: have get_default_remote from submodule--helper */ - argv_array_push(&cp->args, "origin"); - oid_array_for_each_unique(task->commits, - append_oid_to_argv, &cp->args); - - *task_cb = task; - strbuf_release(&submodule_prefix); - return 1; - } - - return 0; -} - -static int fetch_start_failure(struct strbuf *err, - void *cb, void *task_cb) -{ - struct submodule_parallel_fetch *spf = cb; - struct fetch_task *task = task_cb; - - spf->result = 1; - - fetch_task_release(task); - return 0; -} - -static int commit_missing_in_sub(const struct object_id *oid, void *data) -{ - struct repository *subrepo = data; - - enum object_type type = oid_object_info(subrepo, oid, NULL); - - return type != OBJ_COMMIT; -} - -static int fetch_finish(int retvalue, struct strbuf *err, - void *cb, void *task_cb) -{ - struct submodule_parallel_fetch *spf = cb; - struct fetch_task *task = task_cb; - - struct string_list_item *it; - struct oid_array *commits; - - if (retvalue) - /* - * NEEDSWORK: This indicates that the overall fetch - * failed, even though there may be a subsequent fetch - * by commit hash that might work. It may be a good - * idea to not indicate failure in this case, and only - * indicate failure if the subsequent fetch fails. - */ - spf->result = 1; - - if (!task || !task->sub) - BUG("callback cookie bogus"); - - /* Is this the second time we process this submodule? */ - if (task->commits) - goto out; - - it = string_list_lookup(&spf->changed_submodule_names, task->sub->name); - if (!it) - /* Could be an unchanged submodule, not contained in the list */ - goto out; - - commits = it->util; - oid_array_filter(commits, - commit_missing_in_sub, - task->repo); - - /* Are there commits we want, but do not exist? */ - if (commits->nr) { - task->commits = commits; - ALLOC_GROW(spf->oid_fetch_tasks, - spf->oid_fetch_tasks_nr + 1, - spf->oid_fetch_tasks_alloc); - spf->oid_fetch_tasks[spf->oid_fetch_tasks_nr] = task; - spf->oid_fetch_tasks_nr++; - return 0; - } - -out: - fetch_task_release(task); - - return 0; -} - -int fetch_populated_submodules(struct repository *r, - const struct argv_array *options, - const char *prefix, int command_line_option, - int default_option, - int quiet, int max_parallel_jobs) -{ - int i; - struct submodule_parallel_fetch spf = SPF_INIT; - - spf.r = r; - spf.command_line_option = command_line_option; - spf.default_option = default_option; - spf.quiet = quiet; - spf.prefix = prefix; - - if (!r->worktree) - goto out; - - if (repo_read_index(r) < 0) - die("index file corrupt"); - - argv_array_push(&spf.args, "fetch"); - for (i = 0; i < options->argc; i++) - argv_array_push(&spf.args, options->argv[i]); - argv_array_push(&spf.args, "--recurse-submodules-default"); - /* default value, "--submodule-prefix" and its value are added later */ - - calculate_changed_submodule_paths(r, &spf.changed_submodule_names); - string_list_sort(&spf.changed_submodule_names); - run_processes_parallel_tr2(max_parallel_jobs, - get_next_submodule, - fetch_start_failure, - fetch_finish, - &spf, - "submodule", "parallel/fetch"); - - argv_array_clear(&spf.args); -out: - free_submodules_oids(&spf.changed_submodule_names); - return spf.result; -} - -unsigned is_submodule_modified(const char *path, int ignore_untracked) -{ - struct child_process cp = CHILD_PROCESS_INIT; - struct strbuf buf = STRBUF_INIT; - FILE *fp; - unsigned dirty_submodule = 0; - const char *git_dir; - int ignore_cp_exit_code = 0; - - strbuf_addf(&buf, "%s/.git", path); - git_dir = read_gitfile(buf.buf); - if (!git_dir) - git_dir = buf.buf; - if (!is_git_directory(git_dir)) { - if (is_directory(git_dir)) - die(_("'%s' not recognized as a git repository"), git_dir); - strbuf_release(&buf); - /* The submodule is not checked out, so it is not modified */ - return 0; - } - strbuf_reset(&buf); - - argv_array_pushl(&cp.args, "status", "--porcelain=2", NULL); - if (ignore_untracked) - argv_array_push(&cp.args, "-uno"); - - prepare_submodule_repo_env(&cp.env_array); - cp.git_cmd = 1; - cp.no_stdin = 1; - cp.out = -1; - cp.dir = path; - if (start_command(&cp)) - die("Could not run 'git status --porcelain=2' in submodule %s", path); - - fp = xfdopen(cp.out, "r"); - while (strbuf_getwholeline(&buf, fp, '\n') != EOF) { - /* regular untracked files */ - if (buf.buf[0] == '?') - dirty_submodule |= DIRTY_SUBMODULE_UNTRACKED; - - if (buf.buf[0] == 'u' || - buf.buf[0] == '1' || - buf.buf[0] == '2') { - /* T = line type, XY = status, SSSS = submodule state */ - if (buf.len < strlen("T XY SSSS")) - BUG("invalid status --porcelain=2 line %s", - buf.buf); - - if (buf.buf[5] == 'S' && buf.buf[8] == 'U') - /* nested untracked file */ - dirty_submodule |= DIRTY_SUBMODULE_UNTRACKED; - - if (buf.buf[0] == 'u' || - buf.buf[0] == '2' || - memcmp(buf.buf + 5, "S..U", 4)) - /* other change */ - dirty_submodule |= DIRTY_SUBMODULE_MODIFIED; - } - - if ((dirty_submodule & DIRTY_SUBMODULE_MODIFIED) && - ((dirty_submodule & DIRTY_SUBMODULE_UNTRACKED) || - ignore_untracked)) { - /* - * We're not interested in any further information from - * the child any more, neither output nor its exit code. - */ - ignore_cp_exit_code = 1; - break; - } - } - fclose(fp); - - if (finish_command(&cp) && !ignore_cp_exit_code) - die("'git status --porcelain=2' failed in submodule %s", path); - - strbuf_release(&buf); - return dirty_submodule; -} - -int submodule_uses_gitfile(const char *path) -{ - struct child_process cp = CHILD_PROCESS_INIT; - const char *argv[] = { - "submodule", - "foreach", - "--quiet", - "--recursive", - "test -f .git", - NULL, - }; - struct strbuf buf = STRBUF_INIT; - const char *git_dir; - - strbuf_addf(&buf, "%s/.git", path); - git_dir = read_gitfile(buf.buf); - if (!git_dir) { - strbuf_release(&buf); - return 0; - } - strbuf_release(&buf); - - /* Now test that all nested submodules use a gitfile too */ - cp.argv = argv; - prepare_submodule_repo_env(&cp.env_array); - cp.git_cmd = 1; - cp.no_stdin = 1; - cp.no_stderr = 1; - cp.no_stdout = 1; - cp.dir = path; - if (run_command(&cp)) - return 0; - - return 1; -} - -/* - * Check if it is a bad idea to remove a submodule, i.e. if we'd lose data - * when doing so. - * - * Return 1 if we'd lose data, return 0 if the removal is fine, - * and negative values for errors. - */ -int bad_to_remove_submodule(const char *path, unsigned flags) -{ - ssize_t len; - struct child_process cp = CHILD_PROCESS_INIT; - struct strbuf buf = STRBUF_INIT; - int ret = 0; - - if (!file_exists(path) || is_empty_dir(path)) - return 0; - - if (!submodule_uses_gitfile(path)) - return 1; - - argv_array_pushl(&cp.args, "status", "--porcelain", - "--ignore-submodules=none", NULL); - - if (flags & SUBMODULE_REMOVAL_IGNORE_UNTRACKED) - argv_array_push(&cp.args, "-uno"); - else - argv_array_push(&cp.args, "-uall"); - - if (!(flags & SUBMODULE_REMOVAL_IGNORE_IGNORED_UNTRACKED)) - argv_array_push(&cp.args, "--ignored"); - - prepare_submodule_repo_env(&cp.env_array); - cp.git_cmd = 1; - cp.no_stdin = 1; - cp.out = -1; - cp.dir = path; - if (start_command(&cp)) { - if (flags & SUBMODULE_REMOVAL_DIE_ON_ERROR) - die(_("could not start 'git status' in submodule '%s'"), - path); - ret = -1; - goto out; - } - - len = strbuf_read(&buf, cp.out, 1024); - if (len > 2) - ret = 1; - close(cp.out); - - if (finish_command(&cp)) { - if (flags & SUBMODULE_REMOVAL_DIE_ON_ERROR) - die(_("could not run 'git status' in submodule '%s'"), - path); - ret = -1; - } -out: - strbuf_release(&buf); - return ret; -} - -void submodule_unset_core_worktree(const struct submodule *sub) -{ - char *config_path = xstrfmt("%s/modules/%s/config", - get_git_common_dir(), sub->name); - - if (git_config_set_in_file_gently(config_path, "core.worktree", NULL)) - warning(_("Could not unset core.worktree setting in submodule '%s'"), - sub->path); - - free(config_path); -} - -static const char *get_super_prefix_or_empty(void) -{ - const char *s = get_super_prefix(); - if (!s) - s = ""; - return s; -} - -static int submodule_has_dirty_index(const struct submodule *sub) -{ - struct child_process cp = CHILD_PROCESS_INIT; - - prepare_submodule_repo_env(&cp.env_array); - - cp.git_cmd = 1; - argv_array_pushl(&cp.args, "diff-index", "--quiet", - "--cached", "HEAD", NULL); - cp.no_stdin = 1; - cp.no_stdout = 1; - cp.dir = sub->path; - if (start_command(&cp)) - die("could not recurse into submodule '%s'", sub->path); - - return finish_command(&cp); -} - -static void submodule_reset_index(const char *path) -{ - struct child_process cp = CHILD_PROCESS_INIT; - prepare_submodule_repo_env(&cp.env_array); - - cp.git_cmd = 1; - cp.no_stdin = 1; - cp.dir = path; - - argv_array_pushf(&cp.args, "--super-prefix=%s%s/", - get_super_prefix_or_empty(), path); - argv_array_pushl(&cp.args, "read-tree", "-u", "--reset", NULL); - - argv_array_push(&cp.args, empty_tree_oid_hex()); - - if (run_command(&cp)) - die("could not reset submodule index"); -} - -/** - * Moves a submodule at a given path from a given head to another new head. - * For edge cases (a submodule coming into existence or removing a submodule) - * pass NULL for old or new respectively. - */ -int submodule_move_head(const char *path, - const char *old_head, - const char *new_head, - unsigned flags) -{ - int ret = 0; - struct child_process cp = CHILD_PROCESS_INIT; - const struct submodule *sub; - int *error_code_ptr, error_code; - - if (!is_submodule_active(the_repository, path)) - return 0; - - if (flags & SUBMODULE_MOVE_HEAD_FORCE) - /* - * Pass non NULL pointer to is_submodule_populated_gently - * to prevent die()-ing. We'll use connect_work_tree_and_git_dir - * to fixup the submodule in the force case later. - */ - error_code_ptr = &error_code; - else - error_code_ptr = NULL; - - if (old_head && !is_submodule_populated_gently(path, error_code_ptr)) - return 0; - - sub = submodule_from_path(the_repository, &null_oid, path); - - if (!sub) - BUG("could not get submodule information for '%s'", path); - - if (old_head && !(flags & SUBMODULE_MOVE_HEAD_FORCE)) { - /* Check if the submodule has a dirty index. */ - if (submodule_has_dirty_index(sub)) - return error(_("submodule '%s' has dirty index"), path); - } - - if (!(flags & SUBMODULE_MOVE_HEAD_DRY_RUN)) { - if (old_head) { - if (!submodule_uses_gitfile(path)) - absorb_git_dir_into_superproject(path, - ABSORB_GITDIR_RECURSE_SUBMODULES); - } else { - char *gitdir = xstrfmt("%s/modules/%s", - get_git_common_dir(), sub->name); - connect_work_tree_and_git_dir(path, gitdir, 0); - free(gitdir); - - /* make sure the index is clean as well */ - submodule_reset_index(path); - } - - if (old_head && (flags & SUBMODULE_MOVE_HEAD_FORCE)) { - char *gitdir = xstrfmt("%s/modules/%s", - get_git_common_dir(), sub->name); - connect_work_tree_and_git_dir(path, gitdir, 1); - free(gitdir); - } - } - - prepare_submodule_repo_env(&cp.env_array); - - cp.git_cmd = 1; - cp.no_stdin = 1; - cp.dir = path; - - argv_array_pushf(&cp.args, "--super-prefix=%s%s/", - get_super_prefix_or_empty(), path); - argv_array_pushl(&cp.args, "read-tree", "--recurse-submodules", NULL); - - if (flags & SUBMODULE_MOVE_HEAD_DRY_RUN) - argv_array_push(&cp.args, "-n"); - else - argv_array_push(&cp.args, "-u"); - - if (flags & SUBMODULE_MOVE_HEAD_FORCE) - argv_array_push(&cp.args, "--reset"); - else - argv_array_push(&cp.args, "-m"); - - if (!(flags & SUBMODULE_MOVE_HEAD_FORCE)) - argv_array_push(&cp.args, old_head ? old_head : empty_tree_oid_hex()); - - argv_array_push(&cp.args, new_head ? new_head : empty_tree_oid_hex()); - - if (run_command(&cp)) { - ret = error(_("Submodule '%s' could not be updated."), path); - goto out; - } - - if (!(flags & SUBMODULE_MOVE_HEAD_DRY_RUN)) { - if (new_head) { - child_process_init(&cp); - /* also set the HEAD accordingly */ - cp.git_cmd = 1; - cp.no_stdin = 1; - cp.dir = path; - - prepare_submodule_repo_env(&cp.env_array); - argv_array_pushl(&cp.args, "update-ref", "HEAD", - "--no-deref", new_head, NULL); - - if (run_command(&cp)) { - ret = -1; - goto out; - } - } else { - struct strbuf sb = STRBUF_INIT; - - strbuf_addf(&sb, "%s/.git", path); - unlink_or_warn(sb.buf); - strbuf_release(&sb); - - if (is_empty_dir(path)) - rmdir_or_warn(path); - - submodule_unset_core_worktree(sub); - } - } -out: - return ret; -} - -/* - * Embeds a single submodules git directory into the superprojects git dir, - * non recursively. - */ -static void relocate_single_git_dir_into_superproject(const char *path) -{ - char *old_git_dir = NULL, *real_old_git_dir = NULL, *real_new_git_dir = NULL; - const char *new_git_dir; - const struct submodule *sub; - - if (submodule_uses_worktrees(path)) - die(_("relocate_gitdir for submodule '%s' with " - "more than one worktree not supported"), path); - - old_git_dir = xstrfmt("%s/.git", path); - if (read_gitfile(old_git_dir)) - /* If it is an actual gitfile, it doesn't need migration. */ - return; - - real_old_git_dir = real_pathdup(old_git_dir, 1); - - sub = submodule_from_path(the_repository, &null_oid, path); - if (!sub) - die(_("could not lookup name for submodule '%s'"), path); - - new_git_dir = git_path("modules/%s", sub->name); - if (safe_create_leading_directories_const(new_git_dir) < 0) - die(_("could not create directory '%s'"), new_git_dir); - real_new_git_dir = real_pathdup(new_git_dir, 1); - - fprintf(stderr, _("Migrating git directory of '%s%s' from\n'%s' to\n'%s'\n"), - get_super_prefix_or_empty(), path, - real_old_git_dir, real_new_git_dir); - - relocate_gitdir(path, real_old_git_dir, real_new_git_dir); - - free(old_git_dir); - free(real_old_git_dir); - free(real_new_git_dir); -} - -/* - * Migrate the git directory of the submodule given by path from - * having its git directory within the working tree to the git dir nested - * in its superprojects git dir under modules/. - */ -void absorb_git_dir_into_superproject(const char *path, - unsigned flags) -{ - int err_code; - const char *sub_git_dir; - struct strbuf gitdir = STRBUF_INIT; - strbuf_addf(&gitdir, "%s/.git", path); - sub_git_dir = resolve_gitdir_gently(gitdir.buf, &err_code); - - /* Not populated? */ - if (!sub_git_dir) { - const struct submodule *sub; - - if (err_code == READ_GITFILE_ERR_STAT_FAILED) { - /* unpopulated as expected */ - strbuf_release(&gitdir); - return; - } - - if (err_code != READ_GITFILE_ERR_NOT_A_REPO) - /* We don't know what broke here. */ - read_gitfile_error_die(err_code, path, NULL); - - /* - * Maybe populated, but no git directory was found? - * This can happen if the superproject is a submodule - * itself and was just absorbed. The absorption of the - * superproject did not rewrite the git file links yet, - * fix it now. - */ - sub = submodule_from_path(the_repository, &null_oid, path); - if (!sub) - die(_("could not lookup name for submodule '%s'"), path); - connect_work_tree_and_git_dir(path, - git_path("modules/%s", sub->name), 0); - } else { - /* Is it already absorbed into the superprojects git dir? */ - char *real_sub_git_dir = real_pathdup(sub_git_dir, 1); - char *real_common_git_dir = real_pathdup(get_git_common_dir(), 1); - - if (!starts_with(real_sub_git_dir, real_common_git_dir)) - relocate_single_git_dir_into_superproject(path); - - free(real_sub_git_dir); - free(real_common_git_dir); - } - strbuf_release(&gitdir); - - if (flags & ABSORB_GITDIR_RECURSE_SUBMODULES) { - struct child_process cp = CHILD_PROCESS_INIT; - struct strbuf sb = STRBUF_INIT; - - if (flags & ~ABSORB_GITDIR_RECURSE_SUBMODULES) - BUG("we don't know how to pass the flags down?"); - - strbuf_addstr(&sb, get_super_prefix_or_empty()); - strbuf_addstr(&sb, path); - strbuf_addch(&sb, '/'); - - cp.dir = path; - cp.git_cmd = 1; - cp.no_stdin = 1; - argv_array_pushl(&cp.args, "--super-prefix", sb.buf, - "submodule--helper", - "absorb-git-dirs", NULL); - prepare_submodule_repo_env(&cp.env_array); - if (run_command(&cp)) - die(_("could not recurse into submodule '%s'"), path); - - strbuf_release(&sb); - } -} - -const char *get_superproject_working_tree(void) -{ - struct child_process cp = CHILD_PROCESS_INIT; - struct strbuf sb = STRBUF_INIT; - const char *one_up = real_path_if_valid("../"); - const char *cwd = xgetcwd(); - const char *ret = NULL; - const char *subpath; - int code; - ssize_t len; - - if (!is_inside_work_tree()) - /* - * FIXME: - * We might have a superproject, but it is harder - * to determine. - */ - return NULL; - - if (!one_up) - return NULL; - - subpath = relative_path(cwd, one_up, &sb); - - prepare_submodule_repo_env(&cp.env_array); - argv_array_pop(&cp.env_array); - - argv_array_pushl(&cp.args, "--literal-pathspecs", "-C", "..", - "ls-files", "-z", "--stage", "--full-name", "--", - subpath, NULL); - strbuf_reset(&sb); - - cp.no_stdin = 1; - cp.no_stderr = 1; - cp.out = -1; - cp.git_cmd = 1; - - if (start_command(&cp)) - die(_("could not start ls-files in ..")); - - len = strbuf_read(&sb, cp.out, PATH_MAX); - close(cp.out); - - if (starts_with(sb.buf, "160000")) { - int super_sub_len; - int cwd_len = strlen(cwd); - char *super_sub, *super_wt; - - /* - * There is a superproject having this repo as a submodule. - * The format is <mode> SP <hash> SP <stage> TAB <full name> \0, - * We're only interested in the name after the tab. - */ - super_sub = strchr(sb.buf, '\t') + 1; - super_sub_len = strlen(super_sub); - - if (super_sub_len > cwd_len || - strcmp(&cwd[cwd_len - super_sub_len], super_sub)) - BUG("returned path string doesn't match cwd?"); - - super_wt = xstrdup(cwd); - super_wt[cwd_len - super_sub_len] = '\0'; - - ret = real_path(super_wt); - free(super_wt); - } - strbuf_release(&sb); - - code = finish_command(&cp); - - if (code == 128) - /* '../' is not a git repository */ - return NULL; - if (code == 0 && len == 0) - /* There is an unrelated git repository at '../' */ - return NULL; - if (code) - die(_("ls-tree returned unexpected return code %d"), code); - - return ret; -} - -/* - * Put the gitdir for a submodule (given relative to the main - * repository worktree) into `buf`, or return -1 on error. - */ -int submodule_to_gitdir(struct strbuf *buf, const char *submodule) -{ - const struct submodule *sub; - const char *git_dir; - int ret = 0; - - strbuf_reset(buf); - strbuf_addstr(buf, submodule); - strbuf_complete(buf, '/'); - strbuf_addstr(buf, ".git"); - - git_dir = read_gitfile(buf->buf); - if (git_dir) { - strbuf_reset(buf); - strbuf_addstr(buf, git_dir); - } - if (!is_git_directory(buf->buf)) { - sub = submodule_from_path(the_repository, &null_oid, submodule); - if (!sub) { - ret = -1; - goto cleanup; - } - strbuf_reset(buf); - strbuf_git_path(buf, "%s/%s", "modules", sub->name); - } - -cleanup: - return ret; -} |