diff options
Diffstat (limited to 'submodule.c')
-rw-r--r-- | submodule.c | 492 |
1 files changed, 310 insertions, 182 deletions
diff --git a/submodule.c b/submodule.c index b3ae642f29..1b8a3b575d 100644 --- a/submodule.c +++ b/submodule.c @@ -16,11 +16,12 @@ #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_DEFAULT; +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 oid_array ref_tips_before_fetch; static struct oid_array ref_tips_after_fetch; @@ -153,7 +154,8 @@ 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); @@ -169,6 +171,56 @@ 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(); @@ -196,7 +248,8 @@ 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); } } @@ -207,7 +260,7 @@ void gitmodules_config_sha1(const unsigned char *commit_sha1) 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); @@ -282,6 +335,69 @@ int is_submodule_populated_gently(const char *path, int *return_error_code) 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) { @@ -447,8 +563,8 @@ 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 @@ -554,7 +670,8 @@ 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/", @@ -596,11 +713,6 @@ void set_config_fetch_recurse_submodules(int value) config_fetch_recurse_submodules = value; } -void set_config_update_recurse_submodules(int value) -{ - config_update_recurse_submodules = value; -} - int should_update_submodules(void) { return config_update_recurse_submodules == RECURSE_SUBMODULES_ON; @@ -617,6 +729,94 @@ const struct submodule *submodule_from_ce(const struct cache_entry *ce) 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) { @@ -634,7 +834,7 @@ static int check_has_commit(const struct object_id *oid, void *data) { int *has_commit = data; - if (!lookup_commit_reference(oid->hash)) + if (!lookup_commit_reference(oid)) *has_commit = 0; return 0; @@ -644,10 +844,44 @@ static int submodule_has_commits(const char *path, struct oid_array *commits) { int has_commit = 1; + /* + * Perform a cheap, but incorrect check for the existance 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 existance. 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) { + /* + * 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; } @@ -695,91 +929,31 @@ static int submodule_needs_pushing(const char *path, struct oid_array *commits) return 0; } -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_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 oid_array *commits; - if (!S_ISGITLINK(p->two->mode)) - continue; - commits = submodule_commits(submodules, p->two->path); - oid_array_append(commits, &p->two->oid); - } -} - -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) - oid_array_clear((struct oid_array *) item->util); - string_list_clear(submodules, 1); -} - 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"); 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 oid_array *commits = (struct oid_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; } @@ -896,125 +1070,56 @@ int push_unpushed_submodules(struct oid_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) -{ - oid_array_append(data, oid); + 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(add_sha1_to_array, &ref_tips_before_fetch); + 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 int add_oid_to_argv(const struct object_id *oid, void *data) -{ - argv_array_push(data, oid_to_hex(oid)); - return 0; -} - 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 */ oid_array_for_each_unique(&ref_tips_after_fetch, - add_oid_to_argv, &argv); + append_oid_to_argv, &argv); argv_array_push(&argv, "--not"); oid_array_for_each_unique(&ref_tips_before_fetch, - add_oid_to_argv, &argv); - setup_revisions(argv.argc, argv.argv, &rev, NULL); - if (prepare_revision_walk(&rev)) - die("revision walk setup failed"); + 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); oid_array_clear(&ref_tips_before_fetch); oid_array_clear(&ref_tips_after_fetch); @@ -1409,6 +1514,23 @@ int submodule_move_head(const char *path, int ret = 0; struct child_process cp = CHILD_PROCESS_INIT; const struct submodule *sub; + int *error_code_ptr, error_code; + + if (!is_submodule_initialized(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); @@ -1427,15 +1549,21 @@ int submodule_move_head(const char *path, absorb_git_dir_into_superproject("", path, ABSORB_GITDIR_RECURSE_SUBMODULES); } else { - struct strbuf sb = STRBUF_INIT; - strbuf_addf(&sb, "%s/modules/%s", + char *gitdir = xstrfmt("%s/modules/%s", get_git_common_dir(), sub->name); - connect_work_tree_and_git_dir(path, sb.buf); - strbuf_release(&sb); + 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); @@ -1567,9 +1695,9 @@ 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; @@ -1578,14 +1706,14 @@ 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)) { @@ -1609,11 +1737,11 @@ 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; } |