diff options
Diffstat (limited to 'submodule.c')
| -rw-r--r-- | submodule.c | 1010 |
1 files changed, 694 insertions, 316 deletions
diff --git a/submodule.c b/submodule.c index b80ecacf60..0a2831d846 100644 --- a/submodule.c +++ b/submodule.c @@ -1,4 +1,5 @@ #include "cache.h" +#include "submodule-config.h" #include "submodule.h" #include "dir.h" #include "diff.h" @@ -11,12 +12,13 @@ #include "sha1-array.h" #include "argv-array.h" #include "blob.h" +#include "thread-utils.h" +#include "quote.h" +#include "worktree.h" -static struct string_list config_name_for_path; -static struct string_list config_fetch_recurse_submodules_for_name; -static struct string_list config_ignore_for_name; static int config_fetch_recurse_submodules = RECURSE_SUBMODULES_ON_DEMAND; -static struct string_list changed_submodule_paths; +static int parallel_jobs = 1; +static struct string_list changed_submodule_paths = STRING_LIST_INIT_NODUP; static int initialized_fetch_ref_tips; static struct sha1_array ref_tips_before_fetch; static struct sha1_array ref_tips_after_fetch; @@ -41,7 +43,6 @@ static int gitmodules_is_unmerged; */ static int gitmodules_is_modified; - int is_staging_gitmodules_ok(void) { return !gitmodules_is_modified; @@ -55,7 +56,7 @@ int is_staging_gitmodules_ok(void) int update_path_in_gitmodules(const char *oldpath, const char *newpath) { struct strbuf entry = STRBUF_INIT; - struct string_list_item *path_option; + const struct submodule *submodule; if (!file_exists(".gitmodules")) /* Do nothing without .gitmodules */ return -1; @@ -63,15 +64,15 @@ int update_path_in_gitmodules(const char *oldpath, const char *newpath) if (gitmodules_is_unmerged) die(_("Cannot change unmerged .gitmodules, resolve merge conflicts first")); - path_option = unsorted_string_list_lookup(&config_name_for_path, oldpath); - if (!path_option) { + submodule = submodule_from_path(null_sha1, 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, path_option->util); + strbuf_addstr(&entry, submodule->name); strbuf_addstr(&entry, ".path"); - if (git_config_set_in_file(".gitmodules", entry.buf, newpath) < 0) { + if (git_config_set_in_file_gently(".gitmodules", entry.buf, newpath) < 0) { /* Maybe the user already did that, don't error out here */ warning(_("Could not update .gitmodules entry %s"), entry.buf); strbuf_release(&entry); @@ -89,7 +90,7 @@ int update_path_in_gitmodules(const char *oldpath, const char *newpath) int remove_path_from_gitmodules(const char *path) { struct strbuf sect = STRBUF_INIT; - struct string_list_item *path_option; + const struct submodule *submodule; if (!file_exists(".gitmodules")) /* Do nothing without .gitmodules */ return -1; @@ -97,13 +98,13 @@ int remove_path_from_gitmodules(const char *path) if (gitmodules_is_unmerged) die(_("Cannot change unmerged .gitmodules, resolve merge conflicts first")); - path_option = unsorted_string_list_lookup(&config_name_for_path, path); - if (!path_option) { + submodule = submodule_from_path(null_sha1, path); + if (!submodule || !submodule->name) { warning(_("Could not find section in .gitmodules where path=%s"), path); return -1; } strbuf_addstr(§, "submodule."); - strbuf_addstr(§, path_option->util); + strbuf_addstr(§, submodule->name); if (git_config_rename_section_in_file(".gitmodules", sect.buf, NULL) < 0) { /* Maybe the user already did that, don't error out here */ warning(_("Could not remove .gitmodules entry for %s"), path); @@ -123,40 +124,16 @@ void stage_updated_gitmodules(void) static int add_submodule_odb(const char *path) { struct strbuf objects_directory = STRBUF_INIT; - struct alternate_object_database *alt_odb; int ret = 0; - const char *git_dir; - strbuf_addf(&objects_directory, "%s/.git", path); - git_dir = read_gitfile(objects_directory.buf); - if (git_dir) { - strbuf_reset(&objects_directory); - strbuf_addstr(&objects_directory, git_dir); - } - strbuf_addstr(&objects_directory, "/objects/"); + ret = strbuf_git_path_submodule(&objects_directory, path, "objects/"); + if (ret) + goto done; if (!is_directory(objects_directory.buf)) { ret = -1; goto done; } - /* avoid adding it twice */ - for (alt_odb = alt_odb_list; alt_odb; alt_odb = alt_odb->next) - if (alt_odb->name - alt_odb->base == objects_directory.len && - !strncmp(alt_odb->base, objects_directory.buf, - objects_directory.len)) - goto done; - - alt_odb = xmalloc(objects_directory.len + 42 + sizeof(*alt_odb)); - alt_odb->next = alt_odb_list; - strcpy(alt_odb->base, objects_directory.buf); - alt_odb->name = alt_odb->base + objects_directory.len; - alt_odb->name[2] = '/'; - alt_odb->name[40] = '\0'; - alt_odb->name[41] = '\0'; - alt_odb_list = alt_odb; - - /* add possible alternates from the submodule */ - read_info_alternates(objects_directory.buf, 0); - prepare_alt_odb(); + add_to_alternates_memory(objects_directory.buf); done: strbuf_release(&objects_directory); return ret; @@ -165,12 +142,10 @@ done: void set_diffopt_flags_from_submodule_config(struct diff_options *diffopt, const char *path) { - struct string_list_item *path_option, *ignore_option; - path_option = unsorted_string_list_lookup(&config_name_for_path, path); - if (path_option) { - ignore_option = unsorted_string_list_lookup(&config_ignore_for_name, path_option->util); - if (ignore_option) - handle_ignore_submodules_arg(diffopt, ignore_option->util); + const struct submodule *submodule = submodule_from_path(null_sha1, path); + if (submodule) { + if (submodule->ignore) + handle_ignore_submodules_arg(diffopt, submodule->ignore); else if (gitmodules_is_unmerged) DIFF_OPT_SET(diffopt, IGNORE_SUBMODULES); } @@ -178,7 +153,12 @@ void set_diffopt_flags_from_submodule_config(struct diff_options *diffopt, int submodule_config(const char *var, const char *value, void *cb) { - if (starts_with(var, "submodule.")) + if (!strcmp(var, "submodule.fetchjobs")) { + parallel_jobs = git_config_int(var, value); + if (parallel_jobs < 0) + die(_("negative values not allowed for submodule.fetchJobs")); + return 0; + } else if (starts_with(var, "submodule.")) return parse_submodule_config_option(var, value); else if (!strcmp(var, "fetch.recursesubmodules")) { config_fetch_recurse_submodules = parse_fetch_recurse_submodules_arg(var, value); @@ -219,58 +199,98 @@ void gitmodules_config(void) } } -int parse_submodule_config_option(const char *var, const char *value) +void gitmodules_config_sha1(const unsigned char *commit_sha1) { - struct string_list_item *config; - const char *name, *key; - int namelen; + struct strbuf rev = STRBUF_INIT; + unsigned char sha1[20]; - if (parse_config_key(var, "submodule", &name, &namelen, &key) < 0 || !name) - return 0; + if (gitmodule_sha1_from_commit(commit_sha1, sha1, &rev)) { + git_config_from_blob_sha1(submodule_config, rev.buf, + sha1, NULL); + } + strbuf_release(&rev); +} - if (!strcmp(key, "path")) { - if (!value) - return config_error_nonbool(var); - - config = unsorted_string_list_lookup(&config_name_for_path, value); - if (config) - free(config->util); - else - config = string_list_append(&config_name_for_path, xstrdup(value)); - config->util = xmemdupz(name, namelen); - } else if (!strcmp(key, "fetchrecursesubmodules")) { - char *name_cstr = xmemdupz(name, namelen); - config = unsorted_string_list_lookup(&config_fetch_recurse_submodules_for_name, name_cstr); - if (!config) - config = string_list_append(&config_fetch_recurse_submodules_for_name, name_cstr); - else - free(name_cstr); - config->util = (void *)(intptr_t)parse_fetch_recurse_submodules_arg(var, value); - } else if (!strcmp(key, "ignore")) { - char *name_cstr; - - if (!value) - return config_error_nonbool(var); - - if (strcmp(value, "untracked") && strcmp(value, "dirty") && - strcmp(value, "all") && strcmp(value, "none")) { - warning("Invalid parameter \"%s\" for config option \"submodule.%s.ignore\"", value, var); - return 0; - } +/* + * Determine if a submodule has been initialized at a given 'path' + */ +int is_submodule_initialized(const char *path) +{ + int ret = 0; + const struct submodule *module = NULL; - name_cstr = xmemdupz(name, namelen); - config = unsorted_string_list_lookup(&config_ignore_for_name, name_cstr); - if (config) { - free(config->util); - free(name_cstr); - } else - config = string_list_append(&config_ignore_for_name, name_cstr); - config->util = xstrdup(value); - return 0; + module = submodule_from_path(null_sha1, path); + + if (module) { + char *key = xstrfmt("submodule.%s.url", module->name); + char *value = NULL; + + ret = !git_config_get_string(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 ret = 0; + char *gitdir = xstrfmt("%s/.git", path); + + if (resolve_gitdir(gitdir)) + ret = 1; + + free(gitdir); + return ret; +} + +int parse_submodule_update_strategy(const char *value, + struct submodule_update_strategy *dst) +{ + free((void*)dst->command); + dst->command = NULL; + if (!strcmp(value, "none")) + dst->type = SM_UPDATE_NONE; + else if (!strcmp(value, "checkout")) + dst->type = SM_UPDATE_CHECKOUT; + else if (!strcmp(value, "rebase")) + dst->type = SM_UPDATE_REBASE; + else if (!strcmp(value, "merge")) + dst->type = SM_UPDATE_MERGE; + else if (skip_prefix(value, "!", &value)) { + dst->type = SM_UPDATE_COMMAND; + dst->command = xstrdup(value); + } else + return -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) { @@ -290,9 +310,9 @@ void handle_ignore_submodules_arg(struct diff_options *diffopt, static int prepare_submodule_summary(struct rev_info *rev, const char *path, struct commit *left, struct commit *right, - int *fast_forward, int *fast_backward) + struct commit_list *merge_bases) { - struct commit_list *merge_bases, *list; + struct commit_list *list; init_revisions(rev, NULL); setup_revisions(0, NULL, rev, NULL); @@ -301,17 +321,10 @@ static int prepare_submodule_summary(struct rev_info *rev, const char *path, left->object.flags |= SYMMETRIC_LEFT; add_pending_object(rev, &left->object, path); add_pending_object(rev, &right->object, path); - merge_bases = get_merge_bases(left, right, 1); - if (merge_bases) { - if (merge_bases->item == left) - *fast_forward = 1; - else if (merge_bases->item == right) - *fast_backward = 1; - } for (list = merge_bases; list; list = list->next) { list->item->object.flags |= UNINTERESTING; add_pending_object(rev, &list->item->object, - sha1_to_hex(list->item->object.sha1)); + oid_to_hex(&list->item->object.oid)); } return prepare_revision_walk(rev); } @@ -345,45 +358,23 @@ static void print_submodule_summary(struct rev_info *rev, FILE *f, strbuf_release(&sb); } -int parse_fetch_recurse_submodules_arg(const char *opt, const char *arg) -{ - switch (git_config_maybe_bool(opt, arg)) { - case 1: - return RECURSE_SUBMODULES_ON; - case 0: - return RECURSE_SUBMODULES_OFF; - default: - if (!strcmp(arg, "on-demand")) - return RECURSE_SUBMODULES_ON_DEMAND; - die("bad %s argument: %s", opt, arg); - } -} - -void show_submodule_summary(FILE *f, const char *path, +/* 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 + * left and right pointers. + */ +static void show_submodule_header(FILE *f, const char *path, const char *line_prefix, - unsigned char one[20], unsigned char two[20], + struct object_id *one, struct object_id *two, unsigned dirty_submodule, const char *meta, - const char *del, const char *add, const char *reset) + const char *reset, + struct commit **left, struct commit **right, + struct commit_list **merge_bases) { - struct rev_info rev; - struct commit *left = NULL, *right = NULL; const char *message = NULL; struct strbuf sb = STRBUF_INIT; int fast_forward = 0, fast_backward = 0; - if (is_null_sha1(two)) - message = "(submodule deleted)"; - else if (add_submodule_odb(path)) - message = "(not checked out)"; - else if (is_null_sha1(one)) - message = "(new submodule)"; - else if (!(left = lookup_commit_reference(one)) || - !(right = lookup_commit_reference(two))) - message = "(commits not present)"; - else if (prepare_submodule_summary(&rev, path, left, right, - &fast_forward, &fast_backward)) - message = "(revision walker failed)"; - if (dirty_submodule & DIRTY_SUBMODULE_UNTRACKED) fprintf(f, "%sSubmodule %s contains untracked content\n", line_prefix, path); @@ -391,30 +382,162 @@ void show_submodule_summary(FILE *f, const char *path, fprintf(f, "%sSubmodule %s contains modified content\n", line_prefix, path); - if (!hashcmp(one, two)) { + if (is_null_oid(one)) + message = "(new submodule)"; + else if (is_null_oid(two)) + message = "(submodule deleted)"; + + if (add_submodule_odb(path)) { + if (!message) + message = "(not initialized)"; + 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(one->hash); + *right = lookup_commit_reference(two->hash); + + /* + * 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 = get_merge_bases(*left, *right); + if (*merge_bases) { + if ((*merge_bases)->item == *left) + fast_forward = 1; + else if ((*merge_bases)->item == *right) + fast_backward = 1; + } + + if (!oidcmp(one, two)) { strbuf_release(&sb); return; } - strbuf_addf(&sb, "%s%sSubmodule %s %s..", line_prefix, meta, path, - find_unique_abbrev(one, DEFAULT_ABBREV)); - if (!fast_backward && !fast_forward) - strbuf_addch(&sb, '.'); - strbuf_addf(&sb, "%s", find_unique_abbrev(two, DEFAULT_ABBREV)); +output_header: + strbuf_addf(&sb, "%s%sSubmodule %s ", line_prefix, meta, path); + strbuf_add_unique_abbrev(&sb, one->hash, DEFAULT_ABBREV); + strbuf_addstr(&sb, (fast_backward || fast_forward) ? ".." : "..."); + strbuf_add_unique_abbrev(&sb, two->hash, DEFAULT_ABBREV); if (message) strbuf_addf(&sb, " %s%s\n", message, reset); else strbuf_addf(&sb, "%s:%s\n", fast_backward ? " (rewind)" : "", reset); fwrite(sb.buf, sb.len, 1, f); - if (!message) /* only NULL if we succeeded in setting up the walk */ - print_submodule_summary(&rev, f, line_prefix, del, add, reset); + strbuf_release(&sb); +} + +void show_submodule_summary(FILE *f, const char *path, + const char *line_prefix, + struct object_id *one, struct object_id *two, + unsigned dirty_submodule, const char *meta, + const char *del, const char *add, const char *reset) +{ + struct rev_info rev; + struct commit *left = NULL, *right = NULL; + struct commit_list *merge_bases = NULL; + + show_submodule_header(f, path, line_prefix, one, two, dirty_submodule, + meta, reset, &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) + goto out; + + /* Treat revision walker failure the same as missing commits */ + if (prepare_submodule_summary(&rev, path, left, right, merge_bases)) { + fprintf(f, "%s(revision walker failed)\n", line_prefix); + goto out; + } + + print_submodule_summary(&rev, f, line_prefix, del, add, reset); + +out: + if (merge_bases) + free_commit_list(merge_bases); + clear_commit_marks(left, ~0); + clear_commit_marks(right, ~0); +} + +void show_submodule_inline_diff(FILE *f, const char *path, + const char *line_prefix, + struct object_id *one, struct object_id *two, + unsigned dirty_submodule, const char *meta, + const char *del, const char *add, const char *reset, + const struct diff_options *o) +{ + const struct object_id *old = &empty_tree_oid, *new = &empty_tree_oid; + struct commit *left = NULL, *right = NULL; + struct commit_list *merge_bases = NULL; + struct strbuf submodule_dir = STRBUF_INIT; + struct child_process cp = CHILD_PROCESS_INIT; + + show_submodule_header(f, path, line_prefix, one, two, dirty_submodule, + meta, reset, &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 = one; + if (right) + new = two; + + fflush(f); + cp.git_cmd = 1; + cp.dir = path; + cp.out = dup(fileno(f)); + cp.no_stdin = 1; + + /* TODO: other options may need to be passed here. */ + argv_array_push(&cp.args, "diff"); + 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/", + 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)); + /* + * 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)); + + if (run_command(&cp)) + fprintf(f, "(diff failed)\n"); + +done: + strbuf_release(&submodule_dir); + if (merge_bases) + free_commit_list(merge_bases); if (left) clear_commit_marks(left, ~0); if (right) clear_commit_marks(right, ~0); - - strbuf_release(&sb); } void set_config_fetch_recurse_submodules(int value) @@ -422,33 +545,73 @@ void set_config_fetch_recurse_submodules(int value) config_fetch_recurse_submodules = value; } -static int has_remote(const char *refname, const unsigned char *sha1, int flags, void *cb_data) +static int has_remote(const char *refname, const struct object_id *oid, + int flags, void *cb_data) { return 1; } -static int submodule_needs_pushing(const char *path, const unsigned char sha1[20]) +static int append_sha1_to_argv(const unsigned char sha1[20], void *data) +{ + struct argv_array *argv = data; + argv_array_push(argv, sha1_to_hex(sha1)); + return 0; +} + +static int check_has_commit(const unsigned char sha1[20], void *data) { - if (add_submodule_odb(path) || !lookup_commit_reference(sha1)) + int *has_commit = data; + + if (!lookup_commit_reference(sha1)) + *has_commit = 0; + + return 0; +} + +static int submodule_has_commits(const char *path, struct sha1_array *commits) +{ + int has_commit = 1; + + if (add_submodule_odb(path)) + return 0; + + sha1_array_for_each_unique(commits, check_has_commit, &has_commit); + return has_commit; +} + +static int submodule_needs_pushing(const char *path, struct sha1_array *commits) +{ + if (!submodule_has_commits(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; - const char *argv[] = {"rev-list", NULL, "--not", "--remotes", "-n", "1" , NULL}; + struct child_process cp = CHILD_PROCESS_INIT; struct strbuf buf = STRBUF_INIT; int needs_pushing = 0; - argv[1] = sha1_to_hex(sha1); - memset(&cp, 0, sizeof(cp)); - cp.argv = argv; - cp.env = local_repo_env; + argv_array_push(&cp.args, "rev-list"); + sha1_array_for_each_unique(commits, append_sha1_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 %s --not --remotes -n 1' command in submodule %s", - sha1_to_hex(sha1), path); + die("Could not run 'git rev-list <commits> --not --remotes -n 1' command in submodule %s", + path); if (strbuf_read(&buf, cp.out, 41)) needs_pushing = 1; finish_command(&cp); @@ -460,19 +623,34 @@ static int submodule_needs_pushing(const char *path, const unsigned char sha1[20 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 *needs_pushing = data; + 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; - if (submodule_needs_pushing(p->two->path, p->two->sha1)) - string_list_insert(needs_pushing, p->two->path); + commits = submodule_commits(submodules, p->two->path); + sha1_array_append(commits, p->two->oid.hash); } } @@ -488,48 +666,64 @@ static void find_unpushed_submodule_commits(struct commit *commit, diff_tree_combined_merge(commit, 1, &rev); } -int find_unpushed_submodules(unsigned char new_sha1[20], +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, const char *remotes_name, struct string_list *needs_pushing) { struct rev_info rev; struct commit *commit; - const char *argv[] = {NULL, NULL, "--not", "NULL", NULL}; - int argc = ARRAY_SIZE(argv) - 1; - char *sha1_copy; - - struct strbuf remotes_arg = STRBUF_INIT; + struct string_list submodules = STRING_LIST_INIT_DUP; + struct string_list_item *submodule; + struct argv_array argv = ARGV_ARRAY_INIT; - strbuf_addf(&remotes_arg, "--remotes=%s", remotes_name); init_revisions(&rev, NULL); - sha1_copy = xstrdup(sha1_to_hex(new_sha1)); - argv[1] = sha1_copy; - argv[3] = remotes_arg.buf; - setup_revisions(argc, argv, &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); + 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, needs_pushing); + find_unpushed_submodule_commits(commit, &submodules); reset_revision_walk(); - free(sha1_copy); - strbuf_release(&remotes_arg); + argv_array_clear(&argv); + + for_each_string_list_item(submodule, &submodules) { + struct sha1_array *commits = (struct sha1_array *) submodule->util; + + if (submodule_needs_pushing(submodule->string, commits)) + string_list_insert(needs_pushing, submodule->string); + } + free_submodules_sha1s(&submodules); return needs_pushing->nr; } -static int push_submodule(const char *path) +static int push_submodule(const char *path, int dry_run) { if (add_submodule_odb(path)) return 1; if (for_each_remote_ref_submodule(path, has_remote, NULL) > 0) { - struct child_process cp; - const char *argv[] = {"push", NULL}; + struct child_process cp = CHILD_PROCESS_INIT; + argv_array_push(&cp.args, "push"); + if (dry_run) + argv_array_push(&cp.args, "--dry-run"); - memset(&cp, 0, sizeof(cp)); - cp.argv = argv; - cp.env = local_repo_env; + prepare_submodule_repo_env(&cp.env_array); cp.git_cmd = 1; cp.no_stdin = 1; cp.dir = path; @@ -541,21 +735,20 @@ static int push_submodule(const char *path) return 1; } -int push_unpushed_submodules(unsigned char new_sha1[20], const char *remotes_name) +int push_unpushed_submodules(struct sha1_array *commits, + const char *remotes_name, + int dry_run) { int i, ret = 1; - struct string_list needs_pushing; - - memset(&needs_pushing, 0, sizeof(struct string_list)); - needs_pushing.strdup_strings = 1; + struct string_list needs_pushing = STRING_LIST_INIT_DUP; - if (!find_unpushed_submodules(new_sha1, remotes_name, &needs_pushing)) + if (!find_unpushed_submodules(commits, remotes_name, &needs_pushing)) return 1; 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)) { + if (!push_submodule(path, dry_run)) { fprintf(stderr, "Unable to push submodule '%s'\n", path); ret = 0; } @@ -572,22 +765,19 @@ static int is_submodule_commit_present(const char *path, unsigned char sha1[20]) 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; + 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); - memset(&cp, 0, sizeof(cp)); cp.argv = argv; - cp.env = local_repo_env; + prepare_submodule_repo_env(&cp.env_array); cp.git_cmd = 1; cp.no_stdin = 1; - cp.out = -1; cp.dir = path; - if (!run_command(&cp) && !strbuf_read(&buf, cp.out, 1024)) + if (!capture_command(&cp, &buf, 1024) && !buf.len) is_present = 1; - close(cp.out); strbuf_release(&buf); } return is_present; @@ -610,7 +800,7 @@ static void submodule_collect_changed_cb(struct diff_queue_struct *q, * 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->sha1)) + 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 */ @@ -624,10 +814,10 @@ static void submodule_collect_changed_cb(struct diff_queue_struct *q, } } -static int add_sha1_to_array(const char *ref, const unsigned char *sha1, +static int add_sha1_to_array(const char *ref, const struct object_id *oid, int flags, void *data) { - sha1_array_append(data, sha1); + sha1_array_append(data, oid->hash); return 0; } @@ -641,9 +831,10 @@ void check_for_new_submodule_commits(unsigned char new_sha1[20]) sha1_array_append(&ref_tips_after_fetch, new_sha1); } -static void add_sha1_to_argv(const unsigned char sha1[20], void *data) +static int add_sha1_to_argv(const unsigned char sha1[20], void *data) { argv_array_push(data, sha1_to_hex(sha1)); + return 0; } static void calculate_changed_submodule_paths(void) @@ -653,7 +844,7 @@ static void calculate_changed_submodule_paths(void) struct argv_array argv = ARGV_ARRAY_INIT; /* No need to check if there are no submodules configured */ - if (!config_name_for_path.nr) + if (!submodule_from_path(NULL, NULL)) return; init_revisions(&rev, NULL); @@ -680,7 +871,7 @@ static void calculate_changed_submodule_paths(void) 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.sha1, commit->object.sha1, "", &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; @@ -693,57 +884,48 @@ static void calculate_changed_submodule_paths(void) initialized_fetch_ref_tips = 0; } -int fetch_populated_submodules(const struct argv_array *options, - const char *prefix, int command_line_option, - int quiet) +struct submodule_parallel_fetch { + int count; + struct argv_array args; + const char *work_tree; + const char *prefix; + int command_line_option; + int quiet; + int result; +}; +#define SPF_INIT {0, ARGV_ARRAY_INIT, NULL, NULL, 0, 0, 0} + +static int get_next_submodule(struct child_process *cp, + struct strbuf *err, void *data, void **task_cb) { - int i, result = 0; - struct child_process cp; - struct argv_array argv = ARGV_ARRAY_INIT; - struct string_list_item *name_for_path; - const char *work_tree = get_git_work_tree(); - if (!work_tree) - goto out; - - if (read_cache() < 0) - die("index file corrupt"); - - argv_array_push(&argv, "fetch"); - for (i = 0; i < options->argc; i++) - argv_array_push(&argv, options->argv[i]); - argv_array_push(&argv, "--recurse-submodules-default"); - /* default value, "--submodule-prefix" and its value are added later */ - - memset(&cp, 0, sizeof(cp)); - cp.env = local_repo_env; - cp.git_cmd = 1; - cp.no_stdin = 1; - - calculate_changed_submodule_paths(); + int ret = 0; + struct submodule_parallel_fetch *spf = data; - for (i = 0; i < active_nr; i++) { + for (; spf->count < active_nr; spf->count++) { struct strbuf submodule_path = STRBUF_INIT; struct strbuf submodule_git_dir = STRBUF_INIT; struct strbuf submodule_prefix = STRBUF_INIT; - const struct cache_entry *ce = active_cache[i]; - const char *git_dir, *name, *default_argv; + const struct cache_entry *ce = active_cache[spf->count]; + const char *git_dir, *default_argv; + const struct submodule *submodule; if (!S_ISGITLINK(ce->ce_mode)) continue; - name = ce->name; - name_for_path = unsorted_string_list_lookup(&config_name_for_path, ce->name); - if (name_for_path) - name = name_for_path->util; + submodule = submodule_from_path(null_sha1, ce->name); + if (!submodule) + submodule = submodule_from_name(null_sha1, ce->name); default_argv = "yes"; - if (command_line_option == RECURSE_SUBMODULES_DEFAULT) { - struct string_list_item *fetch_recurse_submodules_option; - fetch_recurse_submodules_option = unsorted_string_list_lookup(&config_fetch_recurse_submodules_for_name, name); - if (fetch_recurse_submodules_option) { - if ((intptr_t)fetch_recurse_submodules_option->util == RECURSE_SUBMODULES_OFF) + if (spf->command_line_option == RECURSE_SUBMODULES_DEFAULT) { + if (submodule && + submodule->fetch_recurse != + RECURSE_SUBMODULES_NONE) { + if (submodule->fetch_recurse == + RECURSE_SUBMODULES_OFF) continue; - if ((intptr_t)fetch_recurse_submodules_option->util == RECURSE_SUBMODULES_ON_DEMAND) { + if (submodule->fetch_recurse == + RECURSE_SUBMODULES_ON_DEMAND) { if (!unsorted_string_list_lookup(&changed_submodule_paths, ce->name)) continue; default_argv = "on-demand"; @@ -758,46 +940,109 @@ int fetch_populated_submodules(const struct argv_array *options, default_argv = "on-demand"; } } - } else if (command_line_option == RECURSE_SUBMODULES_ON_DEMAND) { + } else if (spf->command_line_option == RECURSE_SUBMODULES_ON_DEMAND) { if (!unsorted_string_list_lookup(&changed_submodule_paths, ce->name)) continue; default_argv = "on-demand"; } - strbuf_addf(&submodule_path, "%s/%s", work_tree, ce->name); + strbuf_addf(&submodule_path, "%s/%s", spf->work_tree, ce->name); strbuf_addf(&submodule_git_dir, "%s/.git", submodule_path.buf); - strbuf_addf(&submodule_prefix, "%s%s/", prefix, ce->name); + strbuf_addf(&submodule_prefix, "%s%s/", spf->prefix, ce->name); git_dir = read_gitfile(submodule_git_dir.buf); if (!git_dir) git_dir = submodule_git_dir.buf; if (is_directory(git_dir)) { - if (!quiet) - printf("Fetching submodule %s%s\n", prefix, ce->name); - cp.dir = submodule_path.buf; - argv_array_push(&argv, default_argv); - argv_array_push(&argv, "--submodule-prefix"); - argv_array_push(&argv, submodule_prefix.buf); - cp.argv = argv.argv; - if (run_command(&cp)) - result = 1; - argv_array_pop(&argv); - argv_array_pop(&argv); - argv_array_pop(&argv); + child_process_init(cp); + cp->dir = strbuf_detach(&submodule_path, NULL); + prepare_submodule_repo_env(&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"); + argv_array_push(&cp->args, submodule_prefix.buf); + ret = 1; } strbuf_release(&submodule_path); strbuf_release(&submodule_git_dir); strbuf_release(&submodule_prefix); + if (ret) { + spf->count++; + return 1; + } } - argv_array_clear(&argv); + return 0; +} + +static int fetch_start_failure(struct strbuf *err, + void *cb, void *task_cb) +{ + struct submodule_parallel_fetch *spf = cb; + + spf->result = 1; + + return 0; +} + +static int fetch_finish(int retvalue, struct strbuf *err, + void *cb, void *task_cb) +{ + struct submodule_parallel_fetch *spf = cb; + + if (retvalue) + spf->result = 1; + + return 0; +} + +int fetch_populated_submodules(const struct argv_array *options, + const char *prefix, int command_line_option, + int quiet, int max_parallel_jobs) +{ + int i; + struct submodule_parallel_fetch spf = SPF_INIT; + + spf.work_tree = get_git_work_tree(); + spf.command_line_option = command_line_option; + spf.quiet = quiet; + spf.prefix = prefix; + + if (!spf.work_tree) + goto out; + + if (read_cache() < 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 */ + + if (max_parallel_jobs < 0) + max_parallel_jobs = parallel_jobs; + + calculate_changed_submodule_paths(); + run_processes_parallel(max_parallel_jobs, + get_next_submodule, + fetch_start_failure, + fetch_finish, + &spf); + + argv_array_clear(&spf.args); out: string_list_clear(&changed_submodule_paths, 1); - return result; + return spf.result; } unsigned is_submodule_modified(const char *path, int ignore_untracked) { ssize_t len; - struct child_process cp; + struct child_process cp = CHILD_PROCESS_INIT; const char *argv[] = { "status", "--porcelain", @@ -824,9 +1069,8 @@ unsigned is_submodule_modified(const char *path, int ignore_untracked) if (ignore_untracked) argv[2] = "-uno"; - memset(&cp, 0, sizeof(cp)); cp.argv = argv; - cp.env = local_repo_env; + prepare_submodule_repo_env(&cp.env_array); cp.git_cmd = 1; cp.no_stdin = 1; cp.out = -1; @@ -865,7 +1109,7 @@ unsigned is_submodule_modified(const char *path, int ignore_untracked) int submodule_uses_gitfile(const char *path) { - struct child_process cp; + struct child_process cp = CHILD_PROCESS_INIT; const char *argv[] = { "submodule", "foreach", @@ -886,9 +1130,8 @@ int submodule_uses_gitfile(const char *path) strbuf_release(&buf); /* Now test that all nested submodules use a gitfile too */ - memset(&cp, 0, sizeof(cp)); cp.argv = argv; - cp.env = local_repo_env; + prepare_submodule_repo_env(&cp.env_array); cp.git_cmd = 1; cp.no_stdin = 1; cp.no_stderr = 1; @@ -900,47 +1143,64 @@ int submodule_uses_gitfile(const char *path) return 1; } -int ok_to_remove_submodule(const char *path) +/* + * 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) { - struct stat st; ssize_t len; - struct child_process cp; - const char *argv[] = { - "status", - "--porcelain", - "-u", - "--ignore-submodules=none", - NULL, - }; + struct child_process cp = CHILD_PROCESS_INIT; struct strbuf buf = STRBUF_INIT; - int ok_to_remove = 1; + int ret = 0; - if ((lstat(path, &st) < 0) || is_empty_dir(path)) - return 1; + if (!file_exists(path) || is_empty_dir(path)) + return 0; if (!submodule_uses_gitfile(path)) - return 0; + return 1; - memset(&cp, 0, sizeof(cp)); - cp.argv = argv; - cp.env = local_repo_env; + 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)) - die("Could not run 'git status --porcelain -uall --ignore-submodules=none' in submodule %s", 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) - ok_to_remove = 0; + ret = 1; close(cp.out); - if (finish_command(&cp)) - die("'git status --porcelain -uall --ignore-submodules=none' failed in submodule %s", path); - + 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 ok_to_remove; + return ret; } static int find_first_merges(struct object_array *result, const char *path, @@ -962,10 +1222,10 @@ static int find_first_merges(struct object_array *result, const char *path, /* get all revisions that merge commit a */ snprintf(merged_revision, sizeof(merged_revision), "^%s", - sha1_to_hex(a->object.sha1)); + oid_to_hex(&a->object.oid)); init_revisions(&revs, NULL); rev_opts.submodule = path; - setup_revisions(sizeof(rev_args)/sizeof(char *)-1, rev_args, &revs, &rev_opts); + setup_revisions(ARRAY_SIZE(rev_args)-1, rev_args, &revs, &rev_opts); /* save all revisions from the above list that contain b */ if (prepare_revision_walk(&revs)) @@ -1005,7 +1265,7 @@ static void print_commit(struct commit *commit) { struct strbuf sb = STRBUF_INIT; struct pretty_print_context ctx = {0}; - ctx.date_mode = DATE_NORMAL; + ctx.date_mode.type = DATE_NORMAL; format_commit_message(commit, " %h: %m %s", &sb, &ctx); fprintf(stderr, "%s\n", sb.buf); strbuf_release(&sb); @@ -1093,7 +1353,7 @@ int merge_submodule(unsigned char result[20], const char *path, "by using:\n\n" " git update-index --cacheinfo 160000 %s \"%s\"\n\n" "which will accept this suggestion.\n", - sha1_to_hex(merges.objects[0].item->sha1), path); + oid_to_hex(&merges.objects[0].item->oid), path); break; default: @@ -1106,33 +1366,151 @@ int merge_submodule(unsigned char result[20], const char *path, return 0; } -/* Update gitfile and core.worktree setting to connect work tree and git dir */ -void connect_work_tree_and_git_dir(const char *work_tree, const char *git_dir) +int parallel_submodules(void) +{ + return parallel_jobs; +} + +void prepare_submodule_repo_env(struct argv_array *out) { - struct strbuf file_name = STRBUF_INIT; - struct strbuf rel_path = STRBUF_INIT; - const char *real_work_tree = xstrdup(real_path(work_tree)); - FILE *fp; - - /* Update gitfile */ - strbuf_addf(&file_name, "%s/.git", work_tree); - fp = fopen(file_name.buf, "w"); - if (!fp) - die(_("Could not create git link %s"), file_name.buf); - fprintf(fp, "gitdir: %s\n", relative_path(git_dir, real_work_tree, - &rel_path)); - fclose(fp); - - /* Update core.worktree setting */ - strbuf_reset(&file_name); - strbuf_addf(&file_name, "%s/config", git_dir); - if (git_config_set_in_file(file_name.buf, "core.worktree", - relative_path(real_work_tree, git_dir, - &rel_path))) - die(_("Could not set core.worktree in %s"), - file_name.buf); - - strbuf_release(&file_name); - strbuf_release(&rel_path); - free((void *)real_work_tree); + 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. + */ +static void relocate_single_git_dir_into_superproject(const char *prefix, + 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(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); + + if (!prefix) + prefix = get_super_prefix(); + + fprintf(stderr, _("Migrating git directory of '%s%s' from\n'%s' to\n'%s'\n"), + prefix ? prefix : "", 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 *prefix, + 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) { + char *real_new_git_dir; + const char *new_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(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); + } 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(prefix, 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) + 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, 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); + } } |