diff options
Diffstat (limited to 'submodule.c')
| -rw-r--r-- | submodule.c | 208 |
1 files changed, 195 insertions, 13 deletions
diff --git a/submodule.c b/submodule.c index 5294cef641..68c1ba90b9 100644 --- a/submodule.c +++ b/submodule.c @@ -8,12 +8,27 @@ #include "diffcore.h" #include "refs.h" #include "string-list.h" +#include "sha1-array.h" +#include "argv-array.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 initialized_fetch_ref_tips; +static struct sha1_array ref_tips_before_fetch; +static struct sha1_array ref_tips_after_fetch; + +/* + * The following flag is set if the .gitmodules file is unmerged. We then + * disable recursion for all submodules where .git/config doesn't have a + * matching config entry because we can't guess what might be configured in + * .gitmodules unless the user resolves the conflict. When a command line + * option is given (which always overrides configuration) this flag will be + * ignored. + */ +static int gitmodules_is_unmerged; static int add_submodule_odb(const char *path) { @@ -23,7 +38,7 @@ static int add_submodule_odb(const char *path) const char *git_dir; strbuf_addf(&objects_directory, "%s/.git", path); - git_dir = read_gitfile_gently(objects_directory.buf); + git_dir = read_gitfile(objects_directory.buf); if (git_dir) { strbuf_reset(&objects_directory); strbuf_addstr(&objects_directory, git_dir); @@ -63,6 +78,8 @@ void set_diffopt_flags_from_submodule_config(struct diff_options *diffopt, ignore_option = unsorted_string_list_lookup(&config_ignore_for_name, path_option->util); if (ignore_option) handle_ignore_submodules_arg(diffopt, ignore_option->util); + else if (gitmodules_is_unmerged) + DIFF_OPT_SET(diffopt, IGNORE_SUBMODULES); } } @@ -82,9 +99,24 @@ void gitmodules_config(void) const char *work_tree = get_git_work_tree(); if (work_tree) { struct strbuf gitmodules_path = STRBUF_INIT; + int pos; strbuf_addstr(&gitmodules_path, work_tree); strbuf_addstr(&gitmodules_path, "/.gitmodules"); - git_config_from_file(submodule_config, gitmodules_path.buf, NULL); + if (read_cache() < 0) + die("index file corrupt"); + pos = cache_name_pos(".gitmodules", 11); + if (pos < 0) { /* .gitmodules not found or isn't merged */ + pos = -1 - pos; + if (active_nr > pos) { /* there is a .gitmodules */ + const struct cache_entry *ce = active_cache[pos]; + if (ce_namelen(ce) == 11 && + !memcmp(ce->name, ".gitmodules", 11)) + gitmodules_is_unmerged = 1; + } + } + + if (!gitmodules_is_unmerged) + git_config_from_file(submodule_config, gitmodules_path.buf, NULL); strbuf_release(&gitmodules_path); } } @@ -282,6 +314,114 @@ 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) +{ + return 1; +} + +static int submodule_needs_pushing(const char *path, const unsigned char sha1[20]) +{ + if (add_submodule_odb(path) || !lookup_commit_reference(sha1)) + 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 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; + 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); + if (strbuf_read(&buf, cp.out, 41)) + needs_pushing = 1; + finish_command(&cp); + close(cp.out); + strbuf_release(&buf); + return needs_pushing; + } + + return 0; +} + +static void collect_submodules_from_diff(struct diff_queue_struct *q, + struct diff_options *options, + void *data) +{ + int i; + int *needs_pushing = data; + + for (i = 0; i < q->nr; i++) { + struct diff_filepair *p = q->queue[i]; + if (!S_ISGITLINK(p->two->mode)) + continue; + if (submodule_needs_pushing(p->two->path, p->two->sha1)) { + *needs_pushing = 1; + break; + } + } +} + + +static void commit_need_pushing(struct commit *commit, struct commit_list *parent, int *needs_pushing) +{ + const unsigned char (*parents)[20]; + unsigned int i, n; + struct rev_info rev; + + n = commit_list_count(parent); + parents = xmalloc(n * sizeof(*parents)); + + for (i = 0; i < n; i++) { + hashcpy((unsigned char *)(parents + i), parent->item->object.sha1); + parent = parent->next; + } + + 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(commit->object.sha1, parents, n, 1, &rev); + + free((void *)parents); +} + +int check_submodule_needs_pushing(unsigned char new_sha1[20], const char *remotes_name) +{ + struct rev_info rev; + struct commit *commit; + const char *argv[] = {NULL, NULL, "--not", "NULL", NULL}; + int argc = ARRAY_SIZE(argv) - 1; + char *sha1_copy; + int needs_pushing = 0; + struct strbuf remotes_arg = STRBUF_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); + if (prepare_revision_walk(&rev)) + die("revision walk setup failed"); + + while ((commit = get_revision(&rev)) && !needs_pushing) + commit_need_pushing(commit, commit->parents, &needs_pushing); + + free(sha1_copy); + strbuf_release(&remotes_arg); + + return needs_pushing; +} + static int is_submodule_commit_present(const char *path, unsigned char sha1[20]) { int is_present = 0; @@ -340,16 +480,46 @@ static void submodule_collect_changed_cb(struct diff_queue_struct *q, } } +static int add_sha1_to_array(const char *ref, const unsigned char *sha1, + int flags, void *data) +{ + sha1_array_append(data, sha1); + return 0; +} + void check_for_new_submodule_commits(unsigned char new_sha1[20]) { + if (!initialized_fetch_ref_tips) { + for_each_ref(add_sha1_to_array, &ref_tips_before_fetch); + initialized_fetch_ref_tips = 1; + } + + sha1_array_append(&ref_tips_after_fetch, new_sha1); +} + +static void add_sha1_to_argv(const unsigned char sha1[20], void *data) +{ + argv_array_push(data, sha1_to_hex(sha1)); +} + +static void calculate_changed_submodule_paths(void) +{ struct rev_info rev; struct commit *commit; - const char *argv[] = {NULL, NULL, "--not", "--all", NULL}; - int argc = ARRAY_SIZE(argv) - 1; + struct argv_array argv = ARGV_ARRAY_INIT; + + /* No need to check if there are no submodules configured */ + if (!config_name_for_path.nr) + return; init_revisions(&rev, NULL); - argv[1] = xstrdup(sha1_to_hex(new_sha1)); - setup_revisions(argc, argv, &rev, NULL); + argv_array_push(&argv, "--"); /* argv[0] program name */ + sha1_array_for_each_unique(&ref_tips_after_fetch, + add_sha1_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"); @@ -362,6 +532,7 @@ void check_for_new_submodule_commits(unsigned char new_sha1[20]) 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; if (diff_setup_done(&diff_opts) < 0) @@ -372,7 +543,11 @@ void check_for_new_submodule_commits(unsigned char new_sha1[20]) parent = parent->next; } } - free((char *)argv[1]); + + argv_array_clear(&argv); + sha1_array_clear(&ref_tips_before_fetch); + sha1_array_clear(&ref_tips_after_fetch); + initialized_fetch_ref_tips = 0; } int fetch_populated_submodules(int num_options, const char **options, @@ -406,6 +581,8 @@ int fetch_populated_submodules(int num_options, const char **options, cp.git_cmd = 1; cp.no_stdin = 1; + calculate_changed_submodule_paths(); + for (i = 0; i < active_nr; i++) { struct strbuf submodule_path = STRBUF_INIT; struct strbuf submodule_git_dir = STRBUF_INIT; @@ -434,7 +611,8 @@ int fetch_populated_submodules(int num_options, const char **options, default_argv = "on-demand"; } } else { - if (config_fetch_recurse_submodules == RECURSE_SUBMODULES_OFF) + if ((config_fetch_recurse_submodules == RECURSE_SUBMODULES_OFF) || + gitmodules_is_unmerged) continue; if (config_fetch_recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND) { if (!unsorted_string_list_lookup(&changed_submodule_paths, ce->name)) @@ -451,7 +629,7 @@ int fetch_populated_submodules(int num_options, const char **options, strbuf_addf(&submodule_path, "%s/%s", work_tree, ce->name); strbuf_addf(&submodule_git_dir, "%s/.git", submodule_path.buf); strbuf_addf(&submodule_prefix, "%s%s/", prefix, ce->name); - git_dir = read_gitfile_gently(submodule_git_dir.buf); + git_dir = read_gitfile(submodule_git_dir.buf); if (!git_dir) git_dir = submodule_git_dir.buf; if (is_directory(git_dir)) { @@ -489,7 +667,7 @@ unsigned is_submodule_modified(const char *path, int ignore_untracked) const char *git_dir; strbuf_addf(&buf, "%s/.git", path); - git_dir = read_gitfile_gently(buf.buf); + git_dir = read_gitfile(buf.buf); if (!git_dir) git_dir = buf.buf; if (!is_directory(git_dir)) { @@ -511,7 +689,7 @@ unsigned is_submodule_modified(const char *path, int ignore_untracked) cp.out = -1; cp.dir = path; if (start_command(&cp)) - die("Could not run git status --porcelain"); + die("Could not run 'git status --porcelain' in submodule %s", path); len = strbuf_read(&buf, cp.out, 1024); line = buf.buf; @@ -536,7 +714,7 @@ unsigned is_submodule_modified(const char *path, int ignore_untracked) close(cp.out); if (finish_command(&cp)) - die("git status --porcelain failed"); + die("'git status --porcelain' failed in submodule %s", path); strbuf_release(&buf); return dirty_submodule; @@ -616,7 +794,7 @@ static void print_commit(struct commit *commit) 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]) + const unsigned char b[20], int search) { struct commit *commit_base, *commit_a, *commit_b; int parent_count; @@ -671,6 +849,10 @@ int merge_submodule(unsigned char result[20], const char *path, * user needs to confirm the resolution. */ + /* Skip the search if makes no sense to the calling context. */ + if (!search) + return 0; + /* find commit which merges them */ parent_count = find_first_merges(&merges, path, commit_a, commit_b); switch (parent_count) { |