diff options
Diffstat (limited to 'submodule.c')
| -rw-r--r-- | submodule.c | 1101 |
1 files changed, 831 insertions, 270 deletions
diff --git a/submodule.c b/submodule.c index 0a2831d846..36f45f5a5a 100644 --- a/submodule.c +++ b/submodule.c @@ -1,4 +1,6 @@ #include "cache.h" +#include "repository.h" +#include "config.h" #include "submodule-config.h" #include "submodule.h" #include "dir.h" @@ -14,14 +16,17 @@ #include "blob.h" #include "thread-utils.h" #include "quote.h" +#include "remote.h" #include "worktree.h" +#include "parse-options.h" static int config_fetch_recurse_submodules = RECURSE_SUBMODULES_ON_DEMAND; +static int config_update_recurse_submodules = RECURSE_SUBMODULES_OFF; static int parallel_jobs = 1; -static struct string_list changed_submodule_paths = STRING_LIST_INIT_NODUP; +static struct string_list changed_submodule_paths = STRING_LIST_INIT_DUP; static int initialized_fetch_ref_tips; -static struct sha1_array ref_tips_before_fetch; -static struct sha1_array ref_tips_after_fetch; +static struct oid_array ref_tips_before_fetch; +static struct oid_array ref_tips_after_fetch; /* * The following flag is set if the .gitmodules file is unmerged. We then @@ -151,7 +156,8 @@ void set_diffopt_flags_from_submodule_config(struct diff_options *diffopt, } } -int submodule_config(const char *var, const char *value, void *cb) +/* For loading from the .gitmodules file. */ +static int git_modules_config(const char *var, const char *value, void *cb) { if (!strcmp(var, "submodule.fetchjobs")) { parallel_jobs = git_config_int(var, value); @@ -167,6 +173,56 @@ int submodule_config(const char *var, const char *value, void *cb) return 0; } +/* Loads all submodule settings from the config. */ +int 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; + } else { + return git_modules_config(var, value, cb); + } +} + +/* 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; +} + +void load_submodule_cache(void) +{ + if (config_update_recurse_submodules == RECURSE_SUBMODULES_OFF) + return; + + gitmodules_config(); + git_config(submodule_config, NULL); +} + void gitmodules_config(void) { const char *work_tree = get_git_work_tree(); @@ -194,18 +250,33 @@ void gitmodules_config(void) } if (!gitmodules_is_unmerged) - git_config_from_file(submodule_config, gitmodules_path.buf, NULL); + git_config_from_file(git_modules_config, + gitmodules_path.buf, NULL); strbuf_release(&gitmodules_path); } } +static int gitmodules_cb(const char *var, const char *value, void *data) +{ + struct repository *repo = data; + return submodule_config_option(repo, var, value); +} + +void repo_read_gitmodules(struct repository *repo) +{ + char *gitmodules_path = repo_worktree_path(repo, ".gitmodules"); + + git_config_from_file(gitmodules_cb, gitmodules_path, repo); + free(gitmodules_path); +} + void gitmodules_config_sha1(const unsigned char *commit_sha1) { struct strbuf rev = STRBUF_INIT; unsigned char sha1[20]; if (gitmodule_sha1_from_commit(commit_sha1, sha1, &rev)) { - git_config_from_blob_sha1(submodule_config, rev.buf, + git_config_from_blob_sha1(git_modules_config, rev.buf, sha1, NULL); } strbuf_release(&rev); @@ -214,41 +285,131 @@ void gitmodules_config_sha1(const unsigned char *commit_sha1) /* * Determine if a submodule has been initialized at a given 'path' */ -int is_submodule_initialized(const char *path) +int is_submodule_active(struct repository *repo, const char *path) { int ret = 0; - const struct submodule *module = NULL; - - module = submodule_from_path(null_sha1, path); + char *key = NULL; + char *value = NULL; + const struct string_list *sl; + const struct submodule *module; - if (module) { - char *key = xstrfmt("submodule.%s.url", module->name); - char *value = NULL; + module = submodule_from_cache(repo, null_sha1, path); - ret = !git_config_get_string(key, &value); + /* early return if there isn't a path->module mapping */ + if (!module) + return 0; - free(value); + /* 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(&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; } -/* - * Determine if a submodule has been populated at a given 'path' - */ -int is_submodule_populated(const char *path) +int is_submodule_populated_gently(const char *path, int *return_error_code) { int ret = 0; char *gitdir = xstrfmt("%s/.git", path); - if (resolve_gitdir(gitdir)) + 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); + } + } +} + int parse_submodule_update_strategy(const char *value, struct submodule_update_strategy *dst) { @@ -358,6 +519,23 @@ static void print_submodule_summary(struct rev_info *rev, FILE *f, 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); +} + /* Helper function to display the submodule header line prior to the full * summary output. If it can locate the submodule objects directory it will * attempt to lookup both the left and right commits and put them into the @@ -397,8 +575,8 @@ static void show_submodule_header(FILE *f, const char *path, * Attempt to lookup the commit references, and determine if this is * a fast forward or fast backwards update. */ - *left = lookup_commit_reference(one->hash); - *right = lookup_commit_reference(two->hash); + *left = lookup_commit_reference(one); + *right = lookup_commit_reference(two); /* * Warn about missing commits in the submodule project, but only if @@ -504,7 +682,8 @@ void show_submodule_inline_diff(FILE *f, const char *path, cp.no_stdin = 1; /* TODO: other options may need to be passed here. */ - argv_array_push(&cp.args, "diff"); + argv_array_pushl(&cp.args, "diff", "--submodule=diff", NULL); + argv_array_pushf(&cp.args, "--line-prefix=%s", line_prefix); if (DIFF_OPT_TST(o, REVERSE_DIFF)) { argv_array_pushf(&cp.args, "--src-prefix=%s%s/", @@ -527,6 +706,7 @@ void show_submodule_inline_diff(FILE *f, const char *path, if (!(dirty_submodule & DIRTY_SUBMODULE_MODIFIED)) argv_array_push(&cp.args, oid_to_hex(new)); + prepare_submodule_repo_env(&cp.env_array); if (run_command(&cp)) fprintf(f, "(diff failed)\n"); @@ -545,41 +725,179 @@ void set_config_fetch_recurse_submodules(int value) config_fetch_recurse_submodules = value; } +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(null_sha1, ce->name); +} + +static struct oid_array *submodule_commits(struct string_list *submodules, + const char *path) +{ + struct string_list_item *item; + + item = string_list_insert(submodules, path); + 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; +} + +static void collect_changed_submodules_cb(struct diff_queue_struct *q, + struct diff_options *options, + void *data) +{ + int i; + struct string_list *changed = data; + + for (i = 0; i < q->nr; i++) { + struct diff_filepair *p = q->queue[i]; + struct oid_array *commits; + if (!S_ISGITLINK(p->two->mode)) + continue; + + if (S_ISGITLINK(p->one->mode)) { + /* + * NEEDSWORK: We should honor the name configured in + * the .gitmodules file of the commit we are examining + * here to be able to correctly follow submodules + * being moved around. + */ + commits = submodule_commits(changed, p->two->path); + oid_array_append(commits, &p->two->oid); + } else { + /* Submodule is new or was moved here */ + /* + * NEEDSWORK: When the .git directories of submodules + * live inside the superprojects .git directory some + * day we should fetch new submodules directly into + * that location too when config or options request + * that so they can be checked out from there. + */ + continue; + } + } +} + +/* + * 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 string_list *changed, + struct argv_array *argv) +{ + struct rev_info rev; + const struct commit *commit; + + init_revisions(&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; + + init_revisions(&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 = changed; + 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_sha1_to_argv(const unsigned char sha1[20], void *data) +static int append_oid_to_argv(const struct object_id *oid, void *data) { struct argv_array *argv = data; - argv_array_push(argv, sha1_to_hex(sha1)); + argv_array_push(argv, oid_to_hex(oid)); return 0; } -static int check_has_commit(const unsigned char sha1[20], void *data) +static int check_has_commit(const struct object_id *oid, void *data) { int *has_commit = data; - if (!lookup_commit_reference(sha1)) + if (!lookup_commit_reference(oid)) *has_commit = 0; return 0; } -static int submodule_has_commits(const char *path, struct sha1_array *commits) +static int submodule_has_commits(const char *path, struct oid_array *commits) { int has_commit = 1; + /* + * 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; - sha1_array_for_each_unique(commits, check_has_commit, &has_commit); + oid_array_for_each_unique(commits, check_has_commit, &has_commit); + + if (has_commit) { + /* + * 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 = 0; + + strbuf_release(&out); + } + return has_commit; } -static int submodule_needs_pushing(const char *path, struct sha1_array *commits) +static int submodule_needs_pushing(const char *path, struct oid_array *commits) { if (!submodule_has_commits(path, commits)) /* @@ -601,7 +919,7 @@ static int submodule_needs_pushing(const char *path, struct sha1_array *commits) int needs_pushing = 0; argv_array_push(&cp.args, "rev-list"); - sha1_array_for_each_unique(commits, append_sha1_to_argv, &cp.args); + 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); @@ -623,96 +941,40 @@ static int submodule_needs_pushing(const char *path, struct sha1_array *commits) return 0; } -static struct sha1_array *submodule_commits(struct string_list *submodules, - const char *path) -{ - struct string_list_item *item; - - item = string_list_insert(submodules, path); - if (item->util) - return (struct sha1_array *) item->util; - - /* NEEDSWORK: should we have sha1_array_init()? */ - item->util = xcalloc(1, sizeof(struct sha1_array)); - return (struct sha1_array *) item->util; -} - -static void collect_submodules_from_diff(struct diff_queue_struct *q, - struct diff_options *options, - void *data) -{ - int i; - struct string_list *submodules = data; - - for (i = 0; i < q->nr; i++) { - struct diff_filepair *p = q->queue[i]; - struct sha1_array *commits; - if (!S_ISGITLINK(p->two->mode)) - continue; - commits = submodule_commits(submodules, p->two->path); - sha1_array_append(commits, p->two->oid.hash); - } -} - -static void find_unpushed_submodule_commits(struct commit *commit, - struct string_list *needs_pushing) -{ - struct rev_info rev; - - init_revisions(&rev, NULL); - rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK; - rev.diffopt.format_callback = collect_submodules_from_diff; - rev.diffopt.format_callback_data = needs_pushing; - diff_tree_combined_merge(commit, 1, &rev); -} - -static void free_submodules_sha1s(struct string_list *submodules) -{ - struct string_list_item *item; - for_each_string_list_item(item, submodules) - sha1_array_clear((struct sha1_array *) item->util); - string_list_clear(submodules, 1); -} - -int find_unpushed_submodules(struct sha1_array *commits, +int find_unpushed_submodules(struct oid_array *commits, const char *remotes_name, struct string_list *needs_pushing) { - struct rev_info rev; - struct commit *commit; struct string_list submodules = STRING_LIST_INIT_DUP; struct string_list_item *submodule; struct argv_array argv = ARGV_ARRAY_INIT; - init_revisions(&rev, NULL); - /* argv.argv[0] will be ignored by setup_revisions */ argv_array_push(&argv, "find_unpushed_submodules"); - sha1_array_for_each_unique(commits, append_sha1_to_argv, &argv); + oid_array_for_each_unique(commits, append_oid_to_argv, &argv); argv_array_push(&argv, "--not"); argv_array_pushf(&argv, "--remotes=%s", remotes_name); - setup_revisions(argv.argc, argv.argv, &rev, NULL); - if (prepare_revision_walk(&rev)) - die("revision walk setup failed"); - - while ((commit = get_revision(&rev)) != NULL) - find_unpushed_submodule_commits(commit, &submodules); - - reset_revision_walk(); - argv_array_clear(&argv); + collect_changed_submodules(&submodules, &argv); for_each_string_list_item(submodule, &submodules) { - struct sha1_array *commits = (struct sha1_array *) submodule->util; + struct oid_array *commits = submodule->util; + const char *path = submodule->string; - if (submodule_needs_pushing(submodule->string, commits)) - string_list_insert(needs_pushing, submodule->string); + if (submodule_needs_pushing(path, commits)) + string_list_insert(needs_pushing, path); } - free_submodules_sha1s(&submodules); + + free_submodules_oids(&submodules); + argv_array_clear(&argv); return needs_pushing->nr; } -static int push_submodule(const char *path, int dry_run) +static int push_submodule(const char *path, + const struct remote *remote, + const char **refspec, int refspec_nr, + const struct string_list *push_options, + int dry_run) { if (add_submodule_odb(path)) return 1; @@ -723,6 +985,20 @@ static int push_submodule(const char *path, int dry_run) 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 < refspec_nr; i++) + argv_array_push(&cp.args, refspec[i]); + } + prepare_submodule_repo_env(&cp.env_array); cp.git_cmd = 1; cp.no_stdin = 1; @@ -735,20 +1011,79 @@ static int push_submodule(const char *path, int dry_run) return 1; } -int push_unpushed_submodules(struct sha1_array *commits, - const char *remotes_name, +/* + * 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 char **refspec, int refspec_nr) +{ + 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 < refspec_nr; i++) + argv_array_push(&cp.args, refspec[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 oid_array *commits, + const struct remote *remote, + const char **refspec, int refspec_nr, + 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(commits, remotes_name, &needs_pushing)) + if (!find_unpushed_submodules(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.hash, 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, + refspec, refspec_nr); + 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, dry_run)) { + if (!push_submodule(path, remote, refspec, refspec_nr, + push_options, dry_run)) { fprintf(stderr, "Unable to push submodule '%s'\n", path); ret = 0; } @@ -759,131 +1094,88 @@ int push_unpushed_submodules(struct sha1_array *commits, return ret; } -static int is_submodule_commit_present(const char *path, unsigned char sha1[20]) -{ - int is_present = 0; - if (!add_submodule_odb(path) && lookup_commit_reference(sha1)) { - /* Even if the submodule is checked out and the commit is - * present, make sure it is reachable from a ref. */ - struct child_process cp = CHILD_PROCESS_INIT; - const char *argv[] = {"rev-list", "-n", "1", NULL, "--not", "--all", NULL}; - struct strbuf buf = STRBUF_INIT; - - argv[3] = sha1_to_hex(sha1); - cp.argv = argv; - prepare_submodule_repo_env(&cp.env_array); - cp.git_cmd = 1; - cp.no_stdin = 1; - cp.dir = path; - if (!capture_command(&cp, &buf, 1024) && !buf.len) - is_present = 1; - - strbuf_release(&buf); - } - return is_present; -} - -static void submodule_collect_changed_cb(struct diff_queue_struct *q, - struct diff_options *options, - void *data) +static int append_oid_to_array(const char *ref, const struct object_id *oid, + int flags, void *data) { - int i; - for (i = 0; i < q->nr; i++) { - struct diff_filepair *p = q->queue[i]; - if (!S_ISGITLINK(p->two->mode)) - continue; - - if (S_ISGITLINK(p->one->mode)) { - /* NEEDSWORK: We should honor the name configured in - * the .gitmodules file of the commit we are examining - * here to be able to correctly follow submodules - * being moved around. */ - struct string_list_item *path; - path = unsorted_string_list_lookup(&changed_submodule_paths, p->two->path); - if (!path && !is_submodule_commit_present(p->two->path, p->two->oid.hash)) - string_list_append(&changed_submodule_paths, xstrdup(p->two->path)); - } else { - /* Submodule is new or was moved here */ - /* NEEDSWORK: When the .git directories of submodules - * live inside the superprojects .git directory some - * day we should fetch new submodules directly into - * that location too when config or options request - * that so they can be checked out from there. */ - continue; - } - } -} - -static int add_sha1_to_array(const char *ref, const struct object_id *oid, - int flags, void *data) -{ - sha1_array_append(data, oid->hash); + struct oid_array *array = data; + oid_array_append(array, oid); return 0; } -void check_for_new_submodule_commits(unsigned char new_sha1[20]) +void check_for_new_submodule_commits(struct object_id *oid) { if (!initialized_fetch_ref_tips) { - for_each_ref(add_sha1_to_array, &ref_tips_before_fetch); + for_each_ref(append_oid_to_array, &ref_tips_before_fetch); initialized_fetch_ref_tips = 1; } - sha1_array_append(&ref_tips_after_fetch, new_sha1); -} - -static int add_sha1_to_argv(const unsigned char sha1[20], void *data) -{ - argv_array_push(data, sha1_to_hex(sha1)); - return 0; + oid_array_append(&ref_tips_after_fetch, oid); } static void calculate_changed_submodule_paths(void) { - struct rev_info rev; - struct commit *commit; struct argv_array argv = ARGV_ARRAY_INIT; + struct string_list changed_submodules = STRING_LIST_INIT_DUP; + const struct string_list_item *item; /* No need to check if there are no submodules configured */ if (!submodule_from_path(NULL, NULL)) return; - init_revisions(&rev, NULL); argv_array_push(&argv, "--"); /* argv[0] program name */ - sha1_array_for_each_unique(&ref_tips_after_fetch, - add_sha1_to_argv, &argv); + oid_array_for_each_unique(&ref_tips_after_fetch, + append_oid_to_argv, &argv); argv_array_push(&argv, "--not"); - sha1_array_for_each_unique(&ref_tips_before_fetch, - add_sha1_to_argv, &argv); - setup_revisions(argv.argc, argv.argv, &rev, NULL); - if (prepare_revision_walk(&rev)) - die("revision walk setup failed"); + 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_paths". */ - while ((commit = get_revision(&rev))) { - struct commit_list *parent = commit->parents; - while (parent) { - struct diff_options diff_opts; - diff_setup(&diff_opts); - DIFF_OPT_SET(&diff_opts, RECURSIVE); - diff_opts.output_format |= DIFF_FORMAT_CALLBACK; - diff_opts.format_callback = submodule_collect_changed_cb; - diff_setup_done(&diff_opts); - diff_tree_sha1(parent->item->object.oid.hash, commit->object.oid.hash, "", &diff_opts); - diffcore_std(&diff_opts); - diff_flush(&diff_opts); - parent = parent->next; - } + collect_changed_submodules(&changed_submodules, &argv); + + for_each_string_list_item(item, &changed_submodules) { + struct oid_array *commits = item->util; + const char *path = item->string; + + if (!submodule_has_commits(path, commits)) + string_list_append(&changed_submodule_paths, path); } + free_submodules_oids(&changed_submodules); argv_array_clear(&argv); - sha1_array_clear(&ref_tips_before_fetch); - sha1_array_clear(&ref_tips_after_fetch); + 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 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; + + gitmodules_config(); + /* No need to check if there are no submodules configured */ + if (!submodule_from_path(NULL, NULL)) + return 0; + + argv_array_push(&args, "--"); /* args[0] program name */ + argv_array_push(&args, oid_to_hex(incl_oid)); + argv_array_push(&args, "--not"); + argv_array_push(&args, oid_to_hex(excl_oid)); + + collect_changed_submodules(&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; @@ -1041,67 +1333,78 @@ out: unsigned is_submodule_modified(const char *path, int ignore_untracked) { - ssize_t len; struct child_process cp = CHILD_PROCESS_INIT; - const char *argv[] = { - "status", - "--porcelain", - NULL, - NULL, - }; struct strbuf buf = STRBUF_INIT; + FILE *fp; unsigned dirty_submodule = 0; - const char *line, *next_line; 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_directory(git_dir)) { + 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[2] = "-uno"; + argv_array_push(&cp.args, "-uno"); - cp.argv = argv; 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' in submodule %s", path); + die("Could not run 'git status --porcelain=2' in submodule %s", path); - len = strbuf_read(&buf, cp.out, 1024); - line = buf.buf; - while (len > 2) { - if ((line[0] == '?') && (line[1] == '?')) { + 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 (dirty_submodule & DIRTY_SUBMODULE_MODIFIED) - break; - } else { - dirty_submodule |= DIRTY_SUBMODULE_MODIFIED; - if (ignore_untracked || - (dirty_submodule & DIRTY_SUBMODULE_UNTRACKED)) - break; + + 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")) + die("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; } - next_line = strchr(line, '\n'); - if (!next_line) + + 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; - next_line++; - len -= (next_line - line); - line = next_line; + } } - close(cp.out); + fclose(fp); - if (finish_command(&cp)) - die("'git status --porcelain' failed in submodule %s", path); + if (finish_command(&cp) && !ignore_cp_exit_code) + die("'git status --porcelain=2' failed in submodule %s", path); strbuf_release(&buf); return dirty_submodule; @@ -1181,7 +1484,7 @@ int bad_to_remove_submodule(const char *path, unsigned flags) cp.dir = path; if (start_command(&cp)) { if (flags & SUBMODULE_REMOVAL_DIE_ON_ERROR) - die(_("could not start 'git status in submodule '%s'"), + die(_("could not start 'git status' in submodule '%s'"), path); ret = -1; goto out; @@ -1194,7 +1497,7 @@ int bad_to_remove_submodule(const char *path, unsigned flags) if (finish_command(&cp)) { if (flags & SUBMODULE_REMOVAL_DIE_ON_ERROR) - die(_("could not run 'git status in submodule '%s'"), + die(_("could not run 'git status' in submodule '%s'"), path); ret = -1; } @@ -1203,6 +1506,174 @@ out: return ret; } +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_SHA1_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, + const char *new, + 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 && !is_submodule_populated_gently(path, error_code_ptr)) + return 0; + + sub = submodule_from_path(null_sha1, path); + + if (!sub) + die("BUG: could not get submodule information for '%s'", path); + + if (old && !(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) { + 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); + free(gitdir); + + /* make sure the index is clean as well */ + submodule_reset_index(path); + } + + if (old && (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); + 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"); + + argv_array_push(&cp.args, old ? old : EMPTY_TREE_SHA1_HEX); + argv_array_push(&cp.args, new ? new : EMPTY_TREE_SHA1_HEX); + + if (run_command(&cp)) { + ret = -1; + goto out; + } + + if (!(flags & SUBMODULE_MOVE_HEAD_DRY_RUN)) { + if (new) { + 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", new, 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); + } + } +out: + return ret; +} + static int find_first_merges(struct object_array *result, const char *path, struct commit *a, struct commit *b) { @@ -1221,7 +1692,7 @@ static int find_first_merges(struct object_array *result, const char *path, memset(&rev_opts, 0, sizeof(rev_opts)); /* get all revisions that merge commit a */ - snprintf(merged_revision, sizeof(merged_revision), "^%s", + xsnprintf(merged_revision, sizeof(merged_revision), "^%s", oid_to_hex(&a->object.oid)); init_revisions(&revs, NULL); rev_opts.submodule = path; @@ -1274,9 +1745,9 @@ static void print_commit(struct commit *commit) #define MERGE_WARNING(path, msg) \ warning("Failed to merge submodule %s (%s)", path, msg); -int merge_submodule(unsigned char result[20], const char *path, - const unsigned char base[20], const unsigned char a[20], - const unsigned char b[20], int search) +int merge_submodule(struct object_id *result, const char *path, + const struct object_id *base, const struct object_id *a, + const struct object_id *b, int search) { struct commit *commit_base, *commit_a, *commit_b; int parent_count; @@ -1285,14 +1756,14 @@ int merge_submodule(unsigned char result[20], const char *path, int i; /* store a in result in case we fail */ - hashcpy(result, a); + oidcpy(result, a); /* we can not handle deletion conflicts */ - if (is_null_sha1(base)) + if (is_null_oid(base)) return 0; - if (is_null_sha1(a)) + if (is_null_oid(a)) return 0; - if (is_null_sha1(b)) + if (is_null_oid(b)) return 0; if (add_submodule_odb(path)) { @@ -1316,11 +1787,11 @@ int merge_submodule(unsigned char result[20], const char *path, /* Case #1: a is contained in b or vice versa */ if (in_merge_bases(commit_a, commit_b)) { - hashcpy(result, b); + oidcpy(result, b); return 1; } if (in_merge_bases(commit_b, commit_a)) { - hashcpy(result, a); + oidcpy(result, a); return 1; } @@ -1371,18 +1842,6 @@ int parallel_submodules(void) return parallel_jobs; } -void prepare_submodule_repo_env(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); - } - argv_array_pushf(out, "%s=%s", GIT_DIR_ENVIRONMENT, - DEFAULT_GIT_DIR_ENVIRONMENT); -} - /* * Embeds a single submodules git directory into the superprojects git dir, * non recursively. @@ -1414,11 +1873,8 @@ static void relocate_single_git_dir_into_superproject(const char *prefix, die(_("could not create directory '%s'"), new_git_dir); real_new_git_dir = real_pathdup(new_git_dir, 1); - if (!prefix) - prefix = get_super_prefix(); - fprintf(stderr, _("Migrating git directory of '%s%s' from\n'%s' to\n'%s'\n"), - prefix ? prefix : "", path, + 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); @@ -1445,8 +1901,6 @@ void absorb_git_dir_into_superproject(const char *prefix, /* Not populated? */ if (!sub_git_dir) { - char *real_new_git_dir; - const char *new_git_dir; const struct submodule *sub; if (err_code == READ_GITFILE_ERR_STAT_FAILED) { @@ -1469,13 +1923,8 @@ void absorb_git_dir_into_superproject(const char *prefix, sub = submodule_from_path(null_sha1, 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); - connect_work_tree_and_git_dir(path, real_new_git_dir); - - free(real_new_git_dir); + connect_work_tree_and_git_dir(path, + git_path("modules/%s", sub->name)); } else { /* Is it already absorbed into the superprojects git dir? */ char *real_sub_git_dir = real_pathdup(sub_git_dir, 1); @@ -1496,8 +1945,7 @@ void absorb_git_dir_into_superproject(const char *prefix, if (flags & ~ABSORB_GITDIR_RECURSE_SUBMODULES) die("BUG: we don't know how to pass the flags down?"); - if (get_super_prefix()) - strbuf_addstr(&sb, get_super_prefix()); + strbuf_addstr(&sb, get_super_prefix_or_empty()); strbuf_addstr(&sb, path); strbuf_addch(&sb, '/'); @@ -1514,3 +1962,116 @@ void absorb_git_dir_into_superproject(const char *prefix, 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 = sb.buf + sb.len - super_sub - 1; + + if (super_sub_len > cwd_len || + strcmp(&cwd[cwd_len - super_sub_len], super_sub)) + die (_("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; +} + +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)) { + gitmodules_config(); + sub = submodule_from_path(null_sha1, submodule); + if (!sub) { + ret = -1; + goto cleanup; + } + strbuf_reset(buf); + strbuf_git_path(buf, "%s/%s", "modules", sub->name); + } + +cleanup: + return ret; +} |