| /* |
| * Builtin "git clone" |
| * |
| * Copyright (c) 2007 Kristian Høgsberg <krh@redhat.com>, |
| * 2008 Daniel Barkalow <barkalow@iabervon.org> |
| * Based on git-commit.sh by Junio C Hamano and Linus Torvalds |
| * |
| * Clone a repository into a different directory that does not yet exist. |
| */ |
| |
| #define USE_THE_INDEX_COMPATIBILITY_MACROS |
| #include "builtin.h" |
| #include "config.h" |
| #include "lockfile.h" |
| #include "parse-options.h" |
| #include "fetch-pack.h" |
| #include "refs.h" |
| #include "refspec.h" |
| #include "object-store.h" |
| #include "tree.h" |
| #include "tree-walk.h" |
| #include "unpack-trees.h" |
| #include "transport.h" |
| #include "strbuf.h" |
| #include "dir.h" |
| #include "dir-iterator.h" |
| #include "iterator.h" |
| #include "sigchain.h" |
| #include "branch.h" |
| #include "remote.h" |
| #include "run-command.h" |
| #include "connected.h" |
| #include "packfile.h" |
| #include "list-objects-filter-options.h" |
| |
| /* |
| * Overall FIXMEs: |
| * - respect DB_ENVIRONMENT for .git/objects. |
| * |
| * Implementation notes: |
| * - dropping use-separate-remote and no-separate-remote compatibility |
| * |
| */ |
| static const char * const builtin_clone_usage[] = { |
| N_("git clone [<options>] [--] <repo> [<dir>]"), |
| NULL |
| }; |
| |
| static int option_no_checkout, option_bare, option_mirror, option_single_branch = -1; |
| static int option_local = -1, option_no_hardlinks, option_shared; |
| static int option_no_tags; |
| static int option_shallow_submodules; |
| static int option_reject_shallow = -1; /* unspecified */ |
| static int config_reject_shallow = -1; /* unspecified */ |
| static int deepen; |
| static char *option_template, *option_depth, *option_since; |
| static char *option_origin = NULL; |
| static char *remote_name = NULL; |
| static char *option_branch = NULL; |
| static struct string_list option_not = STRING_LIST_INIT_NODUP; |
| static const char *real_git_dir; |
| static char *option_upload_pack = "git-upload-pack"; |
| static int option_verbosity; |
| static int option_progress = -1; |
| static int option_sparse_checkout; |
| static enum transport_family family; |
| static struct string_list option_config = STRING_LIST_INIT_NODUP; |
| static struct string_list option_required_reference = STRING_LIST_INIT_NODUP; |
| static struct string_list option_optional_reference = STRING_LIST_INIT_NODUP; |
| static int option_dissociate; |
| static int max_jobs = -1; |
| static struct string_list option_recurse_submodules = STRING_LIST_INIT_NODUP; |
| static struct list_objects_filter_options filter_options; |
| static struct string_list server_options = STRING_LIST_INIT_NODUP; |
| static int option_remote_submodules; |
| |
| static int recurse_submodules_cb(const struct option *opt, |
| const char *arg, int unset) |
| { |
| if (unset) |
| string_list_clear((struct string_list *)opt->value, 0); |
| else if (arg) |
| string_list_append((struct string_list *)opt->value, arg); |
| else |
| string_list_append((struct string_list *)opt->value, |
| (const char *)opt->defval); |
| |
| return 0; |
| } |
| |
| static struct option builtin_clone_options[] = { |
| OPT__VERBOSITY(&option_verbosity), |
| OPT_BOOL(0, "progress", &option_progress, |
| N_("force progress reporting")), |
| OPT_BOOL(0, "reject-shallow", &option_reject_shallow, |
| N_("don't clone shallow repository")), |
| OPT_BOOL('n', "no-checkout", &option_no_checkout, |
| N_("don't create a checkout")), |
| OPT_BOOL(0, "bare", &option_bare, N_("create a bare repository")), |
| OPT_HIDDEN_BOOL(0, "naked", &option_bare, |
| N_("create a bare repository")), |
| OPT_BOOL(0, "mirror", &option_mirror, |
| N_("create a mirror repository (implies bare)")), |
| OPT_BOOL('l', "local", &option_local, |
| N_("to clone from a local repository")), |
| OPT_BOOL(0, "no-hardlinks", &option_no_hardlinks, |
| N_("don't use local hardlinks, always copy")), |
| OPT_BOOL('s', "shared", &option_shared, |
| N_("setup as shared repository")), |
| { OPTION_CALLBACK, 0, "recurse-submodules", &option_recurse_submodules, |
| N_("pathspec"), N_("initialize submodules in the clone"), |
| PARSE_OPT_OPTARG, recurse_submodules_cb, (intptr_t)"." }, |
| OPT_ALIAS(0, "recursive", "recurse-submodules"), |
| OPT_INTEGER('j', "jobs", &max_jobs, |
| N_("number of submodules cloned in parallel")), |
| OPT_STRING(0, "template", &option_template, N_("template-directory"), |
| N_("directory from which templates will be used")), |
| OPT_STRING_LIST(0, "reference", &option_required_reference, N_("repo"), |
| N_("reference repository")), |
| OPT_STRING_LIST(0, "reference-if-able", &option_optional_reference, |
| N_("repo"), N_("reference repository")), |
| OPT_BOOL(0, "dissociate", &option_dissociate, |
| N_("use --reference only while cloning")), |
| OPT_STRING('o', "origin", &option_origin, N_("name"), |
| N_("use <name> instead of 'origin' to track upstream")), |
| OPT_STRING('b', "branch", &option_branch, N_("branch"), |
| N_("checkout <branch> instead of the remote's HEAD")), |
| OPT_STRING('u', "upload-pack", &option_upload_pack, N_("path"), |
| N_("path to git-upload-pack on the remote")), |
| OPT_STRING(0, "depth", &option_depth, N_("depth"), |
| N_("create a shallow clone of that depth")), |
| OPT_STRING(0, "shallow-since", &option_since, N_("time"), |
| N_("create a shallow clone since a specific time")), |
| OPT_STRING_LIST(0, "shallow-exclude", &option_not, N_("revision"), |
| N_("deepen history of shallow clone, excluding rev")), |
| OPT_BOOL(0, "single-branch", &option_single_branch, |
| N_("clone only one branch, HEAD or --branch")), |
| OPT_BOOL(0, "no-tags", &option_no_tags, |
| N_("don't clone any tags, and make later fetches not to follow them")), |
| OPT_BOOL(0, "shallow-submodules", &option_shallow_submodules, |
| N_("any cloned submodules will be shallow")), |
| OPT_STRING(0, "separate-git-dir", &real_git_dir, N_("gitdir"), |
| N_("separate git dir from working tree")), |
| OPT_STRING_LIST('c', "config", &option_config, N_("key=value"), |
| N_("set config inside the new repository")), |
| OPT_STRING_LIST(0, "server-option", &server_options, |
| N_("server-specific"), N_("option to transmit")), |
| OPT_SET_INT('4', "ipv4", &family, N_("use IPv4 addresses only"), |
| TRANSPORT_FAMILY_IPV4), |
| OPT_SET_INT('6', "ipv6", &family, N_("use IPv6 addresses only"), |
| TRANSPORT_FAMILY_IPV6), |
| OPT_PARSE_LIST_OBJECTS_FILTER(&filter_options), |
| OPT_BOOL(0, "remote-submodules", &option_remote_submodules, |
| N_("any cloned submodules will use their remote-tracking branch")), |
| OPT_BOOL(0, "sparse", &option_sparse_checkout, |
| N_("initialize sparse-checkout file to include only files at root")), |
| OPT_END() |
| }; |
| |
| static const char *get_repo_path_1(struct strbuf *path, int *is_bundle) |
| { |
| static char *suffix[] = { "/.git", "", ".git/.git", ".git" }; |
| static char *bundle_suffix[] = { ".bundle", "" }; |
| size_t baselen = path->len; |
| struct stat st; |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(suffix); i++) { |
| strbuf_setlen(path, baselen); |
| strbuf_addstr(path, suffix[i]); |
| if (stat(path->buf, &st)) |
| continue; |
| if (S_ISDIR(st.st_mode) && is_git_directory(path->buf)) { |
| *is_bundle = 0; |
| return path->buf; |
| } else if (S_ISREG(st.st_mode) && st.st_size > 8) { |
| /* Is it a "gitfile"? */ |
| char signature[8]; |
| const char *dst; |
| int len, fd = open(path->buf, O_RDONLY); |
| if (fd < 0) |
| continue; |
| len = read_in_full(fd, signature, 8); |
| close(fd); |
| if (len != 8 || strncmp(signature, "gitdir: ", 8)) |
| continue; |
| dst = read_gitfile(path->buf); |
| if (dst) { |
| *is_bundle = 0; |
| return dst; |
| } |
| } |
| } |
| |
| for (i = 0; i < ARRAY_SIZE(bundle_suffix); i++) { |
| strbuf_setlen(path, baselen); |
| strbuf_addstr(path, bundle_suffix[i]); |
| if (!stat(path->buf, &st) && S_ISREG(st.st_mode)) { |
| *is_bundle = 1; |
| return path->buf; |
| } |
| } |
| |
| return NULL; |
| } |
| |
| static char *get_repo_path(const char *repo, int *is_bundle) |
| { |
| struct strbuf path = STRBUF_INIT; |
| const char *raw; |
| char *canon; |
| |
| strbuf_addstr(&path, repo); |
| raw = get_repo_path_1(&path, is_bundle); |
| canon = raw ? absolute_pathdup(raw) : NULL; |
| strbuf_release(&path); |
| return canon; |
| } |
| |
| static int add_one_reference(struct string_list_item *item, void *cb_data) |
| { |
| struct strbuf err = STRBUF_INIT; |
| int *required = cb_data; |
| char *ref_git = compute_alternate_path(item->string, &err); |
| |
| if (!ref_git) { |
| if (*required) |
| die("%s", err.buf); |
| else |
| fprintf(stderr, |
| _("info: Could not add alternate for '%s': %s\n"), |
| item->string, err.buf); |
| } else { |
| struct strbuf sb = STRBUF_INIT; |
| strbuf_addf(&sb, "%s/objects", ref_git); |
| add_to_alternates_file(sb.buf); |
| strbuf_release(&sb); |
| } |
| |
| strbuf_release(&err); |
| free(ref_git); |
| return 0; |
| } |
| |
| static void setup_reference(void) |
| { |
| int required = 1; |
| for_each_string_list(&option_required_reference, |
| add_one_reference, &required); |
| required = 0; |
| for_each_string_list(&option_optional_reference, |
| add_one_reference, &required); |
| } |
| |
| static void copy_alternates(struct strbuf *src, const char *src_repo) |
| { |
| /* |
| * Read from the source objects/info/alternates file |
| * and copy the entries to corresponding file in the |
| * destination repository with add_to_alternates_file(). |
| * Both src and dst have "$path/objects/info/alternates". |
| * |
| * Instead of copying bit-for-bit from the original, |
| * we need to append to existing one so that the already |
| * created entry via "clone -s" is not lost, and also |
| * to turn entries with paths relative to the original |
| * absolute, so that they can be used in the new repository. |
| */ |
| FILE *in = xfopen(src->buf, "r"); |
| struct strbuf line = STRBUF_INIT; |
| |
| while (strbuf_getline(&line, in) != EOF) { |
| char *abs_path; |
| if (!line.len || line.buf[0] == '#') |
| continue; |
| if (is_absolute_path(line.buf)) { |
| add_to_alternates_file(line.buf); |
| continue; |
| } |
| abs_path = mkpathdup("%s/objects/%s", src_repo, line.buf); |
| if (!normalize_path_copy(abs_path, abs_path)) |
| add_to_alternates_file(abs_path); |
| else |
| warning("skipping invalid relative alternate: %s/%s", |
| src_repo, line.buf); |
| free(abs_path); |
| } |
| strbuf_release(&line); |
| fclose(in); |
| } |
| |
| static void mkdir_if_missing(const char *pathname, mode_t mode) |
| { |
| struct stat st; |
| |
| if (!mkdir(pathname, mode)) |
| return; |
| |
| if (errno != EEXIST) |
| die_errno(_("failed to create directory '%s'"), pathname); |
| else if (stat(pathname, &st)) |
| die_errno(_("failed to stat '%s'"), pathname); |
| else if (!S_ISDIR(st.st_mode)) |
| die(_("%s exists and is not a directory"), pathname); |
| } |
| |
| static void copy_or_link_directory(struct strbuf *src, struct strbuf *dest, |
| const char *src_repo) |
| { |
| int src_len, dest_len; |
| struct dir_iterator *iter; |
| int iter_status; |
| unsigned int flags; |
| struct strbuf realpath = STRBUF_INIT; |
| |
| mkdir_if_missing(dest->buf, 0777); |
| |
| flags = DIR_ITERATOR_PEDANTIC | DIR_ITERATOR_FOLLOW_SYMLINKS; |
| iter = dir_iterator_begin(src->buf, flags); |
| |
| if (!iter) |
| die_errno(_("failed to start iterator over '%s'"), src->buf); |
| |
| strbuf_addch(src, '/'); |
| src_len = src->len; |
| strbuf_addch(dest, '/'); |
| dest_len = dest->len; |
| |
| while ((iter_status = dir_iterator_advance(iter)) == ITER_OK) { |
| strbuf_setlen(src, src_len); |
| strbuf_addstr(src, iter->relative_path); |
| strbuf_setlen(dest, dest_len); |
| strbuf_addstr(dest, iter->relative_path); |
| |
| if (S_ISDIR(iter->st.st_mode)) { |
| mkdir_if_missing(dest->buf, 0777); |
| continue; |
| } |
| |
| /* Files that cannot be copied bit-for-bit... */ |
| if (!fspathcmp(iter->relative_path, "info/alternates")) { |
| copy_alternates(src, src_repo); |
| continue; |
| } |
| |
| if (unlink(dest->buf) && errno != ENOENT) |
| die_errno(_("failed to unlink '%s'"), dest->buf); |
| if (!option_no_hardlinks) { |
| strbuf_realpath(&realpath, src->buf, 1); |
| if (!link(realpath.buf, dest->buf)) |
| continue; |
| if (option_local > 0) |
| die_errno(_("failed to create link '%s'"), dest->buf); |
| option_no_hardlinks = 1; |
| } |
| if (copy_file_with_time(dest->buf, src->buf, 0666)) |
| die_errno(_("failed to copy file to '%s'"), dest->buf); |
| } |
| |
| if (iter_status != ITER_DONE) { |
| strbuf_setlen(src, src_len); |
| die(_("failed to iterate over '%s'"), src->buf); |
| } |
| |
| strbuf_release(&realpath); |
| } |
| |
| static void clone_local(const char *src_repo, const char *dest_repo) |
| { |
| if (option_shared) { |
| struct strbuf alt = STRBUF_INIT; |
| get_common_dir(&alt, src_repo); |
| strbuf_addstr(&alt, "/objects"); |
| add_to_alternates_file(alt.buf); |
| strbuf_release(&alt); |
| } else { |
| struct strbuf src = STRBUF_INIT; |
| struct strbuf dest = STRBUF_INIT; |
| get_common_dir(&src, src_repo); |
| get_common_dir(&dest, dest_repo); |
| strbuf_addstr(&src, "/objects"); |
| strbuf_addstr(&dest, "/objects"); |
| copy_or_link_directory(&src, &dest, src_repo); |
| strbuf_release(&src); |
| strbuf_release(&dest); |
| } |
| |
| if (0 <= option_verbosity) |
| fprintf(stderr, _("done.\n")); |
| } |
| |
| static const char *junk_work_tree; |
| static int junk_work_tree_flags; |
| static const char *junk_git_dir; |
| static int junk_git_dir_flags; |
| static enum { |
| JUNK_LEAVE_NONE, |
| JUNK_LEAVE_REPO, |
| JUNK_LEAVE_ALL |
| } junk_mode = JUNK_LEAVE_NONE; |
| |
| static const char junk_leave_repo_msg[] = |
| N_("Clone succeeded, but checkout failed.\n" |
| "You can inspect what was checked out with 'git status'\n" |
| "and retry with 'git restore --source=HEAD :/'\n"); |
| |
| static void remove_junk(void) |
| { |
| struct strbuf sb = STRBUF_INIT; |
| |
| switch (junk_mode) { |
| case JUNK_LEAVE_REPO: |
| warning("%s", _(junk_leave_repo_msg)); |
| /* fall-through */ |
| case JUNK_LEAVE_ALL: |
| return; |
| default: |
| /* proceed to removal */ |
| break; |
| } |
| |
| if (junk_git_dir) { |
| strbuf_addstr(&sb, junk_git_dir); |
| remove_dir_recursively(&sb, junk_git_dir_flags); |
| strbuf_reset(&sb); |
| } |
| if (junk_work_tree) { |
| strbuf_addstr(&sb, junk_work_tree); |
| remove_dir_recursively(&sb, junk_work_tree_flags); |
| } |
| strbuf_release(&sb); |
| } |
| |
| static void remove_junk_on_signal(int signo) |
| { |
| remove_junk(); |
| sigchain_pop(signo); |
| raise(signo); |
| } |
| |
| static struct ref *find_remote_branch(const struct ref *refs, const char *branch) |
| { |
| struct ref *ref; |
| struct strbuf head = STRBUF_INIT; |
| strbuf_addstr(&head, "refs/heads/"); |
| strbuf_addstr(&head, branch); |
| ref = find_ref_by_name(refs, head.buf); |
| strbuf_release(&head); |
| |
| if (ref) |
| return ref; |
| |
| strbuf_addstr(&head, "refs/tags/"); |
| strbuf_addstr(&head, branch); |
| ref = find_ref_by_name(refs, head.buf); |
| strbuf_release(&head); |
| |
| return ref; |
| } |
| |
| static struct ref *wanted_peer_refs(const struct ref *refs, |
| struct refspec *refspec) |
| { |
| struct ref *head = copy_ref(find_ref_by_name(refs, "HEAD")); |
| struct ref *local_refs = head; |
| struct ref **tail = head ? &head->next : &local_refs; |
| |
| if (option_single_branch) { |
| struct ref *remote_head = NULL; |
| |
| if (!option_branch) |
| remote_head = guess_remote_head(head, refs, 0); |
| else { |
| local_refs = NULL; |
| tail = &local_refs; |
| remote_head = copy_ref(find_remote_branch(refs, option_branch)); |
| } |
| |
| if (!remote_head && option_branch) |
| warning(_("Could not find remote branch %s to clone."), |
| option_branch); |
| else { |
| int i; |
| for (i = 0; i < refspec->nr; i++) |
| get_fetch_map(remote_head, &refspec->items[i], |
| &tail, 0); |
| |
| /* if --branch=tag, pull the requested tag explicitly */ |
| get_fetch_map(remote_head, tag_refspec, &tail, 0); |
| } |
| } else { |
| int i; |
| for (i = 0; i < refspec->nr; i++) |
| get_fetch_map(refs, &refspec->items[i], &tail, 0); |
| } |
| |
| if (!option_mirror && !option_single_branch && !option_no_tags) |
| get_fetch_map(refs, tag_refspec, &tail, 0); |
| |
| return local_refs; |
| } |
| |
| static void write_remote_refs(const struct ref *local_refs) |
| { |
| const struct ref *r; |
| |
| struct ref_transaction *t; |
| struct strbuf err = STRBUF_INIT; |
| |
| t = ref_transaction_begin(&err); |
| if (!t) |
| die("%s", err.buf); |
| |
| for (r = local_refs; r; r = r->next) { |
| if (!r->peer_ref) |
| continue; |
| if (ref_transaction_create(t, r->peer_ref->name, &r->old_oid, |
| 0, NULL, &err)) |
| die("%s", err.buf); |
| } |
| |
| if (initial_ref_transaction_commit(t, &err)) |
| die("%s", err.buf); |
| |
| strbuf_release(&err); |
| ref_transaction_free(t); |
| } |
| |
| static void write_followtags(const struct ref *refs, const char *msg) |
| { |
| const struct ref *ref; |
| for (ref = refs; ref; ref = ref->next) { |
| if (!starts_with(ref->name, "refs/tags/")) |
| continue; |
| if (ends_with(ref->name, "^{}")) |
| continue; |
| if (!has_object_file_with_flags(&ref->old_oid, |
| OBJECT_INFO_QUICK | |
| OBJECT_INFO_SKIP_FETCH_OBJECT)) |
| continue; |
| update_ref(msg, ref->name, &ref->old_oid, NULL, 0, |
| UPDATE_REFS_DIE_ON_ERR); |
| } |
| } |
| |
| static const struct object_id *iterate_ref_map(void *cb_data) |
| { |
| struct ref **rm = cb_data; |
| struct ref *ref = *rm; |
| |
| /* |
| * Skip anything missing a peer_ref, which we are not |
| * actually going to write a ref for. |
| */ |
| while (ref && !ref->peer_ref) |
| ref = ref->next; |
| if (!ref) |
| return NULL; |
| |
| *rm = ref->next; |
| return &ref->old_oid; |
| } |
| |
| static void update_remote_refs(const struct ref *refs, |
| const struct ref *mapped_refs, |
| const struct ref *remote_head_points_at, |
| const char *branch_top, |
| const char *msg, |
| struct transport *transport, |
| int check_connectivity) |
| { |
| const struct ref *rm = mapped_refs; |
| |
| if (check_connectivity) { |
| struct check_connected_options opt = CHECK_CONNECTED_INIT; |
| |
| opt.transport = transport; |
| opt.progress = transport->progress; |
| |
| if (check_connected(iterate_ref_map, &rm, &opt)) |
| die(_("remote did not send all necessary objects")); |
| } |
| |
| if (refs) { |
| write_remote_refs(mapped_refs); |
| if (option_single_branch && !option_no_tags) |
| write_followtags(refs, msg); |
| } |
| |
| if (remote_head_points_at && !option_bare) { |
| struct strbuf head_ref = STRBUF_INIT; |
| strbuf_addstr(&head_ref, branch_top); |
| strbuf_addstr(&head_ref, "HEAD"); |
| if (create_symref(head_ref.buf, |
| remote_head_points_at->peer_ref->name, |
| msg) < 0) |
| die(_("unable to update %s"), head_ref.buf); |
| strbuf_release(&head_ref); |
| } |
| } |
| |
| static void update_head(const struct ref *our, const struct ref *remote, |
| const char *msg) |
| { |
| const char *head; |
| if (our && skip_prefix(our->name, "refs/heads/", &head)) { |
| /* Local default branch link */ |
| if (create_symref("HEAD", our->name, NULL) < 0) |
| die(_("unable to update HEAD")); |
| if (!option_bare) { |
| update_ref(msg, "HEAD", &our->old_oid, NULL, 0, |
| UPDATE_REFS_DIE_ON_ERR); |
| install_branch_config(0, head, remote_name, our->name); |
| } |
| } else if (our) { |
| struct commit *c = lookup_commit_reference(the_repository, |
| &our->old_oid); |
| /* --branch specifies a non-branch (i.e. tags), detach HEAD */ |
| update_ref(msg, "HEAD", &c->object.oid, NULL, REF_NO_DEREF, |
| UPDATE_REFS_DIE_ON_ERR); |
| } else if (remote) { |
| /* |
| * We know remote HEAD points to a non-branch, or |
| * HEAD points to a branch but we don't know which one. |
| * Detach HEAD in all these cases. |
| */ |
| update_ref(msg, "HEAD", &remote->old_oid, NULL, REF_NO_DEREF, |
| UPDATE_REFS_DIE_ON_ERR); |
| } |
| } |
| |
| static int git_sparse_checkout_init(const char *repo) |
| { |
| struct strvec argv = STRVEC_INIT; |
| int result = 0; |
| strvec_pushl(&argv, "-C", repo, "sparse-checkout", "init", NULL); |
| |
| /* |
| * We must apply the setting in the current process |
| * for the later checkout to use the sparse-checkout file. |
| */ |
| core_apply_sparse_checkout = 1; |
| |
| if (run_command_v_opt(argv.v, RUN_GIT_CMD)) { |
| error(_("failed to initialize sparse-checkout")); |
| result = 1; |
| } |
| |
| strvec_clear(&argv); |
| return result; |
| } |
| |
| static int checkout(int submodule_progress) |
| { |
| struct object_id oid; |
| char *head; |
| struct lock_file lock_file = LOCK_INIT; |
| struct unpack_trees_options opts; |
| struct tree *tree; |
| struct tree_desc t; |
| int err = 0; |
| |
| if (option_no_checkout) |
| return 0; |
| |
| head = resolve_refdup("HEAD", RESOLVE_REF_READING, &oid, NULL); |
| if (!head) { |
| warning(_("remote HEAD refers to nonexistent ref, " |
| "unable to checkout.\n")); |
| return 0; |
| } |
| if (!strcmp(head, "HEAD")) { |
| if (advice_enabled(ADVICE_DETACHED_HEAD)) |
| detach_advice(oid_to_hex(&oid)); |
| FREE_AND_NULL(head); |
| } else { |
| if (!starts_with(head, "refs/heads/")) |
| die(_("HEAD not found below refs/heads!")); |
| } |
| |
| /* We need to be in the new work tree for the checkout */ |
| setup_work_tree(); |
| |
| hold_locked_index(&lock_file, LOCK_DIE_ON_ERROR); |
| |
| memset(&opts, 0, sizeof opts); |
| opts.update = 1; |
| opts.merge = 1; |
| opts.clone = 1; |
| opts.preserve_ignored = 0; |
| opts.fn = oneway_merge; |
| opts.verbose_update = (option_verbosity >= 0); |
| opts.src_index = &the_index; |
| opts.dst_index = &the_index; |
| init_checkout_metadata(&opts.meta, head, &oid, NULL); |
| |
| tree = parse_tree_indirect(&oid); |
| parse_tree(tree); |
| init_tree_desc(&t, tree->buffer, tree->size); |
| if (unpack_trees(1, &t, &opts) < 0) |
| die(_("unable to checkout working tree")); |
| |
| free(head); |
| |
| if (write_locked_index(&the_index, &lock_file, COMMIT_LOCK)) |
| die(_("unable to write new index file")); |
| |
| err |= run_hook_le(NULL, "post-checkout", oid_to_hex(null_oid()), |
| oid_to_hex(&oid), "1", NULL); |
| |
| if (!err && (option_recurse_submodules.nr > 0)) { |
| struct strvec args = STRVEC_INIT; |
| strvec_pushl(&args, "submodule", "update", "--require-init", "--recursive", NULL); |
| |
| if (option_shallow_submodules == 1) |
| strvec_push(&args, "--depth=1"); |
| |
| if (max_jobs != -1) |
| strvec_pushf(&args, "--jobs=%d", max_jobs); |
| |
| if (submodule_progress) |
| strvec_push(&args, "--progress"); |
| |
| if (option_verbosity < 0) |
| strvec_push(&args, "--quiet"); |
| |
| if (option_remote_submodules) { |
| strvec_push(&args, "--remote"); |
| strvec_push(&args, "--no-fetch"); |
| } |
| |
| if (option_single_branch >= 0) |
| strvec_push(&args, option_single_branch ? |
| "--single-branch" : |
| "--no-single-branch"); |
| |
| err = run_command_v_opt(args.v, RUN_GIT_CMD); |
| strvec_clear(&args); |
| } |
| |
| return err; |
| } |
| |
| static int git_clone_config(const char *k, const char *v, void *cb) |
| { |
| if (!strcmp(k, "clone.defaultremotename")) { |
| free(remote_name); |
| remote_name = xstrdup(v); |
| } |
| if (!strcmp(k, "clone.rejectshallow")) |
| config_reject_shallow = git_config_bool(k, v); |
| |
| return git_default_config(k, v, cb); |
| } |
| |
| static int write_one_config(const char *key, const char *value, void *data) |
| { |
| /* |
| * give git_clone_config a chance to write config values back to the |
| * environment, since git_config_set_multivar_gently only deals with |
| * config-file writes |
| */ |
| int apply_failed = git_clone_config(key, value, data); |
| if (apply_failed) |
| return apply_failed; |
| |
| return git_config_set_multivar_gently(key, |
| value ? value : "true", |
| CONFIG_REGEX_NONE, 0); |
| } |
| |
| static void write_config(struct string_list *config) |
| { |
| int i; |
| |
| for (i = 0; i < config->nr; i++) { |
| if (git_config_parse_parameter(config->items[i].string, |
| write_one_config, NULL) < 0) |
| die(_("unable to write parameters to config file")); |
| } |
| } |
| |
| static void write_refspec_config(const char *src_ref_prefix, |
| const struct ref *our_head_points_at, |
| const struct ref *remote_head_points_at, |
| struct strbuf *branch_top) |
| { |
| struct strbuf key = STRBUF_INIT; |
| struct strbuf value = STRBUF_INIT; |
| |
| if (option_mirror || !option_bare) { |
| if (option_single_branch && !option_mirror) { |
| if (option_branch) { |
| if (starts_with(our_head_points_at->name, "refs/tags/")) |
| strbuf_addf(&value, "+%s:%s", our_head_points_at->name, |
| our_head_points_at->name); |
| else |
| strbuf_addf(&value, "+%s:%s%s", our_head_points_at->name, |
| branch_top->buf, option_branch); |
| } else if (remote_head_points_at) { |
| const char *head = remote_head_points_at->name; |
| if (!skip_prefix(head, "refs/heads/", &head)) |
| BUG("remote HEAD points at non-head?"); |
| |
| strbuf_addf(&value, "+%s:%s%s", remote_head_points_at->name, |
| branch_top->buf, head); |
| } |
| /* |
| * otherwise, the next "git fetch" will |
| * simply fetch from HEAD without updating |
| * any remote-tracking branch, which is what |
| * we want. |
| */ |
| } else { |
| strbuf_addf(&value, "+%s*:%s*", src_ref_prefix, branch_top->buf); |
| } |
| /* Configure the remote */ |
| if (value.len) { |
| strbuf_addf(&key, "remote.%s.fetch", remote_name); |
| git_config_set_multivar(key.buf, value.buf, "^$", 0); |
| strbuf_reset(&key); |
| |
| if (option_mirror) { |
| strbuf_addf(&key, "remote.%s.mirror", remote_name); |
| git_config_set(key.buf, "true"); |
| strbuf_reset(&key); |
| } |
| } |
| } |
| |
| strbuf_release(&key); |
| strbuf_release(&value); |
| } |
| |
| static void dissociate_from_references(void) |
| { |
| static const char* argv[] = { "repack", "-a", "-d", NULL }; |
| char *alternates = git_pathdup("objects/info/alternates"); |
| |
| if (!access(alternates, F_OK)) { |
| if (run_command_v_opt(argv, RUN_GIT_CMD|RUN_COMMAND_NO_STDIN)) |
| die(_("cannot repack to clean up")); |
| if (unlink(alternates) && errno != ENOENT) |
| die_errno(_("cannot unlink temporary alternates file")); |
| } |
| free(alternates); |
| } |
| |
| static int path_exists(const char *path) |
| { |
| struct stat sb; |
| return !stat(path, &sb); |
| } |
| |
| int cmd_clone(int argc, const char **argv, const char *prefix) |
| { |
| int is_bundle = 0, is_local; |
| int reject_shallow = 0; |
| const char *repo_name, *repo, *work_tree, *git_dir; |
| char *path = NULL, *dir, *display_repo = NULL; |
| int dest_exists, real_dest_exists = 0; |
| const struct ref *refs, *remote_head; |
| struct ref *remote_head_points_at = NULL; |
| const struct ref *our_head_points_at; |
| struct ref *mapped_refs; |
| const struct ref *ref; |
| struct strbuf key = STRBUF_INIT; |
| struct strbuf branch_top = STRBUF_INIT, reflog_msg = STRBUF_INIT; |
| struct transport *transport = NULL; |
| const char *src_ref_prefix = "refs/heads/"; |
| struct remote *remote; |
| int err = 0, complete_refs_before_fetch = 1; |
| int submodule_progress; |
| |
| struct transport_ls_refs_options transport_ls_refs_options = |
| TRANSPORT_LS_REFS_OPTIONS_INIT; |
| |
| packet_trace_identity("clone"); |
| |
| git_config(git_clone_config, NULL); |
| |
| argc = parse_options(argc, argv, prefix, builtin_clone_options, |
| builtin_clone_usage, 0); |
| |
| if (argc > 2) |
| usage_msg_opt(_("Too many arguments."), |
| builtin_clone_usage, builtin_clone_options); |
| |
| if (argc == 0) |
| usage_msg_opt(_("You must specify a repository to clone."), |
| builtin_clone_usage, builtin_clone_options); |
| |
| if (option_depth || option_since || option_not.nr) |
| deepen = 1; |
| if (option_single_branch == -1) |
| option_single_branch = deepen ? 1 : 0; |
| |
| if (option_mirror) |
| option_bare = 1; |
| |
| if (option_bare) { |
| if (option_origin) |
| die(_("--bare and --origin %s options are incompatible."), |
| option_origin); |
| if (real_git_dir) |
| die(_("--bare and --separate-git-dir are incompatible.")); |
| option_no_checkout = 1; |
| } |
| |
| repo_name = argv[0]; |
| |
| path = get_repo_path(repo_name, &is_bundle); |
| if (path) { |
| FREE_AND_NULL(path); |
| repo = absolute_pathdup(repo_name); |
| } else if (strchr(repo_name, ':')) { |
| repo = repo_name; |
| display_repo = transport_anonymize_url(repo); |
| } else |
| die(_("repository '%s' does not exist"), repo_name); |
| |
| /* no need to be strict, transport_set_option() will validate it again */ |
| if (option_depth && atoi(option_depth) < 1) |
| die(_("depth %s is not a positive number"), option_depth); |
| |
| if (argc == 2) |
| dir = xstrdup(argv[1]); |
| else |
| dir = git_url_basename(repo_name, is_bundle, option_bare); |
| strip_dir_trailing_slashes(dir); |
| |
| dest_exists = path_exists(dir); |
| if (dest_exists && !is_empty_dir(dir)) |
| die(_("destination path '%s' already exists and is not " |
| "an empty directory."), dir); |
| |
| if (real_git_dir) { |
| real_dest_exists = path_exists(real_git_dir); |
| if (real_dest_exists && !is_empty_dir(real_git_dir)) |
| die(_("repository path '%s' already exists and is not " |
| "an empty directory."), real_git_dir); |
| } |
| |
| |
| strbuf_addf(&reflog_msg, "clone: from %s", |
| display_repo ? display_repo : repo); |
| free(display_repo); |
| |
| if (option_bare) |
| work_tree = NULL; |
| else { |
| work_tree = getenv("GIT_WORK_TREE"); |
| if (work_tree && path_exists(work_tree)) |
| die(_("working tree '%s' already exists."), work_tree); |
| } |
| |
| if (option_bare || work_tree) |
| git_dir = xstrdup(dir); |
| else { |
| work_tree = dir; |
| git_dir = mkpathdup("%s/.git", dir); |
| } |
| |
| atexit(remove_junk); |
| sigchain_push_common(remove_junk_on_signal); |
| |
| if (!option_bare) { |
| if (safe_create_leading_directories_const(work_tree) < 0) |
| die_errno(_("could not create leading directories of '%s'"), |
| work_tree); |
| if (dest_exists) |
| junk_work_tree_flags |= REMOVE_DIR_KEEP_TOPLEVEL; |
| else if (mkdir(work_tree, 0777)) |
| die_errno(_("could not create work tree dir '%s'"), |
| work_tree); |
| junk_work_tree = work_tree; |
| set_git_work_tree(work_tree); |
| } |
| |
| if (real_git_dir) { |
| if (real_dest_exists) |
| junk_git_dir_flags |= REMOVE_DIR_KEEP_TOPLEVEL; |
| junk_git_dir = real_git_dir; |
| } else { |
| if (dest_exists) |
| junk_git_dir_flags |= REMOVE_DIR_KEEP_TOPLEVEL; |
| junk_git_dir = git_dir; |
| } |
| if (safe_create_leading_directories_const(git_dir) < 0) |
| die(_("could not create leading directories of '%s'"), git_dir); |
| |
| if (0 <= option_verbosity) { |
| if (option_bare) |
| fprintf(stderr, _("Cloning into bare repository '%s'...\n"), dir); |
| else |
| fprintf(stderr, _("Cloning into '%s'...\n"), dir); |
| } |
| |
| if (option_recurse_submodules.nr > 0) { |
| struct string_list_item *item; |
| struct strbuf sb = STRBUF_INIT; |
| int val; |
| |
| /* remove duplicates */ |
| string_list_sort(&option_recurse_submodules); |
| string_list_remove_duplicates(&option_recurse_submodules, 0); |
| |
| /* |
| * NEEDSWORK: In a multi-working-tree world, this needs to be |
| * set in the per-worktree config. |
| */ |
| for_each_string_list_item(item, &option_recurse_submodules) { |
| strbuf_addf(&sb, "submodule.active=%s", |
| item->string); |
| string_list_append(&option_config, |
| strbuf_detach(&sb, NULL)); |
| } |
| |
| if (!git_config_get_bool("submodule.stickyRecursiveClone", &val) && |
| val) |
| string_list_append(&option_config, "submodule.recurse=true"); |
| |
| if (option_required_reference.nr && |
| option_optional_reference.nr) |
| die(_("clone --recursive is not compatible with " |
| "both --reference and --reference-if-able")); |
| else if (option_required_reference.nr) { |
| string_list_append(&option_config, |
| "submodule.alternateLocation=superproject"); |
| string_list_append(&option_config, |
| "submodule.alternateErrorStrategy=die"); |
| } else if (option_optional_reference.nr) { |
| string_list_append(&option_config, |
| "submodule.alternateLocation=superproject"); |
| string_list_append(&option_config, |
| "submodule.alternateErrorStrategy=info"); |
| } |
| } |
| |
| init_db(git_dir, real_git_dir, option_template, GIT_HASH_UNKNOWN, NULL, |
| INIT_DB_QUIET); |
| |
| if (real_git_dir) { |
| free((char *)git_dir); |
| git_dir = real_git_dir; |
| } |
| |
| /* |
| * additional config can be injected with -c, make sure it's included |
| * after init_db, which clears the entire config environment. |
| */ |
| write_config(&option_config); |
| |
| /* |
| * re-read config after init_db and write_config to pick up any config |
| * injected by --template and --config, respectively. |
| */ |
| git_config(git_clone_config, NULL); |
| |
| /* |
| * If option_reject_shallow is specified from CLI option, |
| * ignore config_reject_shallow from git_clone_config. |
| */ |
| if (config_reject_shallow != -1) |
| reject_shallow = config_reject_shallow; |
| if (option_reject_shallow != -1) |
| reject_shallow = option_reject_shallow; |
| |
| /* |
| * apply the remote name provided by --origin only after this second |
| * call to git_config, to ensure it overrides all config-based values. |
| */ |
| if (option_origin != NULL) |
| remote_name = xstrdup(option_origin); |
| |
| if (remote_name == NULL) |
| remote_name = xstrdup("origin"); |
| |
| if (!valid_remote_name(remote_name)) |
| die(_("'%s' is not a valid remote name"), remote_name); |
| |
| if (option_bare) { |
| if (option_mirror) |
| src_ref_prefix = "refs/"; |
| strbuf_addstr(&branch_top, src_ref_prefix); |
| |
| git_config_set("core.bare", "true"); |
| } else { |
| strbuf_addf(&branch_top, "refs/remotes/%s/", remote_name); |
| } |
| |
| strbuf_addf(&key, "remote.%s.url", remote_name); |
| git_config_set(key.buf, repo); |
| strbuf_reset(&key); |
| |
| if (option_no_tags) { |
| strbuf_addf(&key, "remote.%s.tagOpt", remote_name); |
| git_config_set(key.buf, "--no-tags"); |
| strbuf_reset(&key); |
| } |
| |
| if (option_required_reference.nr || option_optional_reference.nr) |
| setup_reference(); |
| |
| if (option_sparse_checkout && git_sparse_checkout_init(dir)) |
| return 1; |
| |
| remote = remote_get(remote_name); |
| |
| refspec_appendf(&remote->fetch, "+%s*:%s*", src_ref_prefix, |
| branch_top.buf); |
| |
| transport = transport_get(remote, remote->url[0]); |
| transport_set_verbosity(transport, option_verbosity, option_progress); |
| transport->family = family; |
| |
| path = get_repo_path(remote->url[0], &is_bundle); |
| is_local = option_local != 0 && path && !is_bundle; |
| if (is_local) { |
| if (option_depth) |
| warning(_("--depth is ignored in local clones; use file:// instead.")); |
| if (option_since) |
| warning(_("--shallow-since is ignored in local clones; use file:// instead.")); |
| if (option_not.nr) |
| warning(_("--shallow-exclude is ignored in local clones; use file:// instead.")); |
| if (filter_options.choice) |
| warning(_("--filter is ignored in local clones; use file:// instead.")); |
| if (!access(mkpath("%s/shallow", path), F_OK)) { |
| if (reject_shallow) |
| die(_("source repository is shallow, reject to clone.")); |
| if (option_local > 0) |
| warning(_("source repository is shallow, ignoring --local")); |
| is_local = 0; |
| } |
| } |
| if (option_local > 0 && !is_local) |
| warning(_("--local is ignored")); |
| transport->cloning = 1; |
| |
| transport_set_option(transport, TRANS_OPT_KEEP, "yes"); |
| |
| if (reject_shallow) |
| transport_set_option(transport, TRANS_OPT_REJECT_SHALLOW, "1"); |
| if (option_depth) |
| transport_set_option(transport, TRANS_OPT_DEPTH, |
| option_depth); |
| if (option_since) |
| transport_set_option(transport, TRANS_OPT_DEEPEN_SINCE, |
| option_since); |
| if (option_not.nr) |
| transport_set_option(transport, TRANS_OPT_DEEPEN_NOT, |
| (const char *)&option_not); |
| if (option_single_branch) |
| transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, "1"); |
| |
| if (option_upload_pack) |
| transport_set_option(transport, TRANS_OPT_UPLOADPACK, |
| option_upload_pack); |
| |
| if (server_options.nr) |
| transport->server_options = &server_options; |
| |
| if (filter_options.choice) { |
| const char *spec = |
| expand_list_objects_filter_spec(&filter_options); |
| transport_set_option(transport, TRANS_OPT_LIST_OBJECTS_FILTER, |
| spec); |
| transport_set_option(transport, TRANS_OPT_FROM_PROMISOR, "1"); |
| } |
| |
| if (transport->smart_options && !deepen && !filter_options.choice) |
| transport->smart_options->check_self_contained_and_connected = 1; |
| |
| |
| strvec_push(&transport_ls_refs_options.ref_prefixes, "HEAD"); |
| refspec_ref_prefixes(&remote->fetch, |
| &transport_ls_refs_options.ref_prefixes); |
| if (option_branch) |
| expand_ref_prefix(&transport_ls_refs_options.ref_prefixes, |
| option_branch); |
| if (!option_no_tags) |
| strvec_push(&transport_ls_refs_options.ref_prefixes, |
| "refs/tags/"); |
| |
| refs = transport_get_remote_refs(transport, &transport_ls_refs_options); |
| |
| if (refs) { |
| int hash_algo = hash_algo_by_ptr(transport_get_hash_algo(transport)); |
| |
| /* |
| * Now that we know what algorithm the remote side is using, |
| * let's set ours to the same thing. |
| */ |
| initialize_repository_version(hash_algo, 1); |
| repo_set_hash_algo(the_repository, hash_algo); |
| |
| mapped_refs = wanted_peer_refs(refs, &remote->fetch); |
| /* |
| * transport_get_remote_refs() may return refs with null sha-1 |
| * in mapped_refs (see struct transport->get_refs_list |
| * comment). In that case we need fetch it early because |
| * remote_head code below relies on it. |
| * |
| * for normal clones, transport_get_remote_refs() should |
| * return reliable ref set, we can delay cloning until after |
| * remote HEAD check. |
| */ |
| for (ref = refs; ref; ref = ref->next) |
| if (is_null_oid(&ref->old_oid)) { |
| complete_refs_before_fetch = 0; |
| break; |
| } |
| |
| if (!is_local && !complete_refs_before_fetch) { |
| if (transport_fetch_refs(transport, mapped_refs)) |
| die(_("remote transport reported error")); |
| } |
| |
| remote_head = find_ref_by_name(refs, "HEAD"); |
| remote_head_points_at = |
| guess_remote_head(remote_head, mapped_refs, 0); |
| |
| if (option_branch) { |
| our_head_points_at = |
| find_remote_branch(mapped_refs, option_branch); |
| |
| if (!our_head_points_at) |
| die(_("Remote branch %s not found in upstream %s"), |
| option_branch, remote_name); |
| } |
| else |
| our_head_points_at = remote_head_points_at; |
| } |
| else { |
| const char *branch; |
| char *ref; |
| |
| if (option_branch) |
| die(_("Remote branch %s not found in upstream %s"), |
| option_branch, remote_name); |
| |
| warning(_("You appear to have cloned an empty repository.")); |
| mapped_refs = NULL; |
| our_head_points_at = NULL; |
| remote_head_points_at = NULL; |
| remote_head = NULL; |
| option_no_checkout = 1; |
| |
| if (transport_ls_refs_options.unborn_head_target && |
| skip_prefix(transport_ls_refs_options.unborn_head_target, |
| "refs/heads/", &branch)) { |
| ref = transport_ls_refs_options.unborn_head_target; |
| transport_ls_refs_options.unborn_head_target = NULL; |
| create_symref("HEAD", ref, reflog_msg.buf); |
| } else { |
| branch = git_default_branch_name(0); |
| ref = xstrfmt("refs/heads/%s", branch); |
| } |
| |
| if (!option_bare) |
| install_branch_config(0, branch, remote_name, ref); |
| |
| free(ref); |
| } |
| |
| write_refspec_config(src_ref_prefix, our_head_points_at, |
| remote_head_points_at, &branch_top); |
| |
| if (filter_options.choice) |
| partial_clone_register(remote_name, &filter_options); |
| |
| if (is_local) |
| clone_local(path, git_dir); |
| else if (refs && complete_refs_before_fetch) { |
| if (transport_fetch_refs(transport, mapped_refs)) |
| die(_("remote transport reported error")); |
| } |
| |
| update_remote_refs(refs, mapped_refs, remote_head_points_at, |
| branch_top.buf, reflog_msg.buf, transport, |
| !is_local); |
| |
| update_head(our_head_points_at, remote_head, reflog_msg.buf); |
| |
| /* |
| * We want to show progress for recursive submodule clones iff |
| * we did so for the main clone. But only the transport knows |
| * the final decision for this flag, so we need to rescue the value |
| * before we free the transport. |
| */ |
| submodule_progress = transport->progress; |
| |
| transport_unlock_pack(transport); |
| transport_disconnect(transport); |
| |
| if (option_dissociate) { |
| close_object_store(the_repository->objects); |
| dissociate_from_references(); |
| } |
| |
| junk_mode = JUNK_LEAVE_REPO; |
| err = checkout(submodule_progress); |
| |
| free(remote_name); |
| strbuf_release(&reflog_msg); |
| strbuf_release(&branch_top); |
| strbuf_release(&key); |
| free_refs(mapped_refs); |
| free_refs(remote_head_points_at); |
| free(dir); |
| free(path); |
| UNLEAK(repo); |
| junk_mode = JUNK_LEAVE_ALL; |
| |
| strvec_clear(&transport_ls_refs_options.ref_prefixes); |
| free(transport_ls_refs_options.unborn_head_target); |
| return err; |
| } |