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git/builtin/clone.c

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/*
* 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.
*/
#include "builtin.h"
#include "abspath.h"
#include "advice.h"
#include "config.h"
#include "copy.h"
#include "environment.h"
#include "gettext.h"
#include "hex.h"
#include "lockfile.h"
#include "parse-options.h"
#include "refs.h"
#include "refspec.h"
#include "object-file.h"
#include "object-store-ll.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 "setup.h"
#include "connected.h"
#include "packfile.h"
#include "path.h"
#include "pkt-line.h"
#include "list-objects-filter-options.h"
#include "hook.h"
#include "bundle.h"
#include "bundle-uri.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 const char *ref_format;
static const 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 = LIST_OBJECTS_FILTER_INIT;
static int option_filter_submodules = -1; /* unspecified */
static int config_filter_submodules = -1; /* unspecified */
static struct string_list server_options = STRING_LIST_INIT_NODUP;
static int option_remote_submodules;
static const char *bundle_uri;
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(0, "ref-format", &ref_format, N_("format"),
N_("specify the reference format to use")),
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_IPVERSION(&family),
OPT_PARSE_LIST_OBJECTS_FILTER(&filter_options),
OPT_BOOL(0, "also-filter-submodules", &option_filter_submodules,
N_("apply partial clone filters to submodules")),
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_STRING(0, "bundle-uri", &bundle_uri,
N_("uri"), N_("a URI for downloading bundles before fetching from origin remote")),
OPT_END()
};
static const char *get_repo_path_1(struct strbuf *path, int *is_bundle)
{
static const char *suffix[] = { "/.git", "", ".git/.git", ".git" };
static const 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;
/*
* Refuse copying directories by default which aren't owned by us. The
* code that performs either the copying or hardlinking is not prepared
* to handle various edge cases where an adversary may for example
* racily swap out files for symlinks. This can cause us to
* inadvertently use the wrong source file.
*
* Furthermore, even if we were prepared to handle such races safely,
* creating hardlinks across user boundaries is an inherently unsafe
* operation as the hardlinked files can be rewritten at will by the
* potentially-untrusted user. We thus refuse to do so by default.
*/
die_upon_dubious_ownership(NULL, NULL, src_repo);
mkdir_if_missing(dest->buf, 0777);
iter = dir_iterator_begin(src->buf, DIR_ITERATOR_PEDANTIC);
if (!iter) {
if (errno == ENOTDIR) {
int saved_errno = errno;
struct stat st;
if (!lstat(src->buf, &st) && S_ISLNK(st.st_mode))
die(_("'%s' is a symlink, refusing to clone with --local"),
src->buf);
errno = saved_errno;
}
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_ISLNK(iter->st.st_mode))
die(_("symlink '%s' exists, refusing to clone with --local"),
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) {
if (!link(src->buf, dest->buf)) {
struct stat st;
/*
* Sanity-check whether the created hardlink
* actually links to the expected file now. This
* catches time-of-check-time-of-use bugs in
* case the source file was meanwhile swapped.
*/
if (lstat(dest->buf, &st))
die(_("hardlink cannot be checked at '%s'"), dest->buf);
if (st.st_mode != iter->st.st_mode ||
st.st_ino != iter->st.st_ino ||
st.st_dev != iter->st.st_dev ||
st.st_size != iter->st.st_size ||
st.st_uid != iter->st.st_uid ||
st.st_gid != iter->st.st_gid)
die(_("hardlink different from source at '%s'"), 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);
}
}
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;
struct refspec_item tag_refspec;
refspec_item_init(&tag_refspec, TAG_REFSPEC, 0);
if (option_single_branch) {
struct ref *remote_head = NULL;
if (!option_branch)
remote_head = guess_remote_head(head, refs, 0);
else {
free_one_ref(head);
local_refs = head = 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);
}
free_refs(remote_head);
} 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);
refspec_item_clear(&tag_refspec);
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_store_transaction_begin(get_main_ref_store(the_repository),
&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,
NULL, 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 (!repo_has_object_file_with_flags(the_repository, &ref->old_oid,
OBJECT_INFO_QUICK |
OBJECT_INFO_SKIP_FETCH_OBJECT))
continue;
refs_update_ref(get_main_ref_store(the_repository), 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 (refs_update_symref(get_main_ref_store(the_repository), 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 *unborn, const char *msg)
{
const char *head;
if (our && skip_prefix(our->name, "refs/heads/", &head)) {
/* Local default branch link */
if (refs_update_symref(get_main_ref_store(the_repository), "HEAD", our->name, NULL) < 0)
die(_("unable to update HEAD"));
if (!option_bare) {
refs_update_ref(get_main_ref_store(the_repository),
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 */
refs_update_ref(get_main_ref_store(the_repository), 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.
*/
refs_update_ref(get_main_ref_store(the_repository), msg,
"HEAD", &remote->old_oid, NULL, REF_NO_DEREF,
UPDATE_REFS_DIE_ON_ERR);
} else if (unborn && skip_prefix(unborn, "refs/heads/", &head)) {
/*
* Unborn head from remote; same as "our" case above except
* that we have no ref to update.
*/
if (refs_update_symref(get_main_ref_store(the_repository), "HEAD", unborn, NULL) < 0)
die(_("unable to update HEAD"));
if (!option_bare)
install_branch_config(0, head, remote_name, unborn);
}
}
static int git_sparse_checkout_init(const char *repo)
{
struct child_process cmd = CHILD_PROCESS_INIT;
int result = 0;
strvec_pushl(&cmd.args, "-C", repo, "sparse-checkout", "set", 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;
cmd.git_cmd = 1;
if (run_command(&cmd)) {
error(_("failed to initialize sparse-checkout"));
result = 1;
}
return result;
}
static int checkout(int submodule_progress, int filter_submodules,
enum ref_storage_format ref_storage_format)
{
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 = refs_resolve_refdup(get_main_ref_store(the_repository), "HEAD",
RESOLVE_REF_READING, &oid, NULL);
if (!head) {
warning(_("remote HEAD refers to nonexistent ref, "
"unable to checkout"));
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();
repo_hold_locked_index(the_repository, &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_repository->index;
opts.dst_index = the_repository->index;
init_checkout_metadata(&opts.meta, head, &oid, NULL);
tree = parse_tree_indirect(&oid);
if (!tree)
die(_("unable to parse commit %s"), oid_to_hex(&oid));
if (parse_tree(tree) < 0)
exit(128);
init_tree_desc(&t, &tree->object.oid, tree->buffer, tree->size);
if (unpack_trees(1, &t, &opts) < 0)
die(_("unable to checkout working tree"));
free(head);
if (write_locked_index(the_repository->index, &lock_file, COMMIT_LOCK))
die(_("unable to write new index file"));
err |= run_hooks_l(the_repository, "post-checkout", oid_to_hex(null_oid()),
oid_to_hex(&oid), "1", NULL);
if (!err && (option_recurse_submodules.nr > 0)) {
struct child_process cmd = CHILD_PROCESS_INIT;
strvec_pushl(&cmd.args, "submodule", "update", "--require-init",
"--recursive", NULL);
if (option_shallow_submodules == 1)
strvec_push(&cmd.args, "--depth=1");
if (max_jobs != -1)
strvec_pushf(&cmd.args, "--jobs=%d", max_jobs);
if (submodule_progress)
strvec_push(&cmd.args, "--progress");
if (option_verbosity < 0)
strvec_push(&cmd.args, "--quiet");
if (option_remote_submodules) {
strvec_push(&cmd.args, "--remote");
strvec_push(&cmd.args, "--no-fetch");
}
if (ref_storage_format != REF_STORAGE_FORMAT_UNKNOWN)
strvec_pushf(&cmd.args, "--ref-format=%s",
ref_storage_format_to_name(ref_storage_format));
if (filter_submodules && filter_options.choice)
strvec_pushf(&cmd.args, "--filter=%s",
expand_list_objects_filter_spec(&filter_options));
if (option_single_branch >= 0)
strvec_push(&cmd.args, option_single_branch ?
"--single-branch" :
"--no-single-branch");
cmd.git_cmd = 1;
err = run_command(&cmd);
}
return err;
}
static int git_clone_config(const char *k, const char *v,
const struct config_context *ctx, void *cb)
{
if (!strcmp(k, "clone.defaultremotename")) {
if (!v)
return config_error_nonbool(k);
free(remote_name);
remote_name = xstrdup(v);
}
if (!strcmp(k, "clone.rejectshallow"))
config_reject_shallow = git_config_bool(k, v);
if (!strcmp(k, "clone.filtersubmodules"))
config_filter_submodules = git_config_bool(k, v);
return git_default_config(k, v, ctx, cb);
}
static int write_one_config(const char *key, const char *value,
const struct config_context *ctx,
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, ctx, 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)
{
char *alternates = git_pathdup("objects/info/alternates");
if (!access(alternates, F_OK)) {
struct child_process cmd = CHILD_PROCESS_INIT;
cmd.git_cmd = 1;
cmd.no_stdin = 1;
strvec_pushl(&cmd.args, "repack", "-a", "-d", NULL);
if (run_command(&cmd))
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 *repo_to_free = NULL;
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;
char *unborn_head = NULL;
struct ref *mapped_refs = NULL;
const struct ref *ref;
struct strbuf key = STRBUF_INIT;
struct strbuf buf = 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;
int filter_submodules = 0;
int hash_algo;
enum ref_storage_format ref_storage_format = REF_STORAGE_FORMAT_UNKNOWN;
const int do_not_override_repo_unix_permissions = -1;
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 (ref_format) {
ref_storage_format = ref_storage_format_by_name(ref_format);
if (ref_storage_format == REF_STORAGE_FORMAT_UNKNOWN)
die(_("unknown ref storage format '%s'"), ref_format);
}
if (option_mirror)
option_bare = 1;
if (option_bare) {
if (real_git_dir)
die(_("options '%s' and '%s' cannot be used together"), "--bare", "--separate-git-dir");
option_no_checkout = 1;
}
if (bundle_uri && deepen)
die(_("options '%s' and '%s' cannot be used together"),
"--bundle-uri",
"--depth/--shallow-since/--shallow-exclude");
repo_name = argv[0];
path = get_repo_path(repo_name, &is_bundle);
if (path) {
FREE_AND_NULL(path);
repo = repo_to_free = 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");
}
}
/*
* Initialize the repository, but skip initializing the reference
* database. We do not yet know about the object format of the
* repository, and reference backends may persist that information into
* their on-disk data structures.
*/
init_db(git_dir, real_git_dir, option_template, GIT_HASH_UNKNOWN,
ref_storage_format, NULL,
do_not_override_repo_unix_permissions, INIT_DB_QUIET | INIT_DB_SKIP_REFDB);
if (real_git_dir) {
free((char *)git_dir);
git_dir = real_git_dir;
}
/*
* We have a chicken-and-egg situation between initializing the refdb
* and spawning transport helpers:
*
* - Initializing the refdb requires us to know about the object
* format. We thus have to spawn the transport helper to learn
* about it.
*
* - The transport helper may want to access the Git repository. But
* because the refdb has not been initialized, we don't have "HEAD"
* or "refs/". Thus, the helper cannot find the Git repository.
*
* Ideally, we would have structured the helper protocol such that it's
* mandatory for the helper to first announce its capabilities without
* yet assuming a fully initialized repository. Like that, we could
* have added a "lazy-refdb-init" capability that announces whether the
* helper is ready to handle not-yet-initialized refdbs. If any helper
* didn't support them, we would have fully initialized the refdb with
* the SHA1 object format, but later on bailed out if we found out that
* the remote repository used a different object format.
*
* But we didn't, and thus we use the following workaround to partially
* initialize the repository's refdb such that it can be discovered by
* Git commands. To do so, we:
*
* - Create an invalid HEAD ref pointing at "refs/heads/.invalid".
*
* - Create the "refs/" directory.
*
* - Set up the ref storage format and repository version as
* required.
*
* This is sufficient for Git commands to discover the Git directory.
*/
initialize_repository_version(GIT_HASH_UNKNOWN,
the_repository->ref_storage_format, 1);
strbuf_addf(&buf, "%s/HEAD", git_dir);
write_file(buf.buf, "ref: refs/heads/.invalid");
strbuf_reset(&buf);
strbuf_addf(&buf, "%s/refs", git_dir);
safe_create_dir(buf.buf, 1);
/*
* 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;
/*
* If option_filter_submodules is specified from CLI option,
* ignore config_filter_submodules from git_clone_config.
*/
if (config_filter_submodules != -1)
filter_submodules = config_filter_submodules;
if (option_filter_submodules != -1)
filter_submodules = option_filter_submodules;
/*
* Exit if the user seems to be doing something silly with submodule
* filter flags (but not with filter configs, as those should be
* set-and-forget).
*/
if (option_filter_submodules > 0 && !filter_options.choice)
die(_("the option '%s' requires '%s'"),
"--also-filter-submodules", "--filter");
if (option_filter_submodules > 0 && !option_recurse_submodules.nr)
die(_("the option '%s' requires '%s'"),
"--also-filter-submodules", "--recurse-submodules");
/*
* 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) {
free(remote_name);
remote_name = xstrdup(option_origin);
}
if (!remote_name)
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();
remote = remote_get_early(remote_name);
refspec_appendf(&remote->fetch, "+%s*:%s*", src_ref_prefix,
branch_top.buf);
path = get_repo_path(remote->url.v[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 = transport_get(remote, path ? path : remote->url.v[0]);
transport_set_verbosity(transport, option_verbosity, option_progress);
transport->family = family;
transport->cloning = 1;
if (is_bundle) {
struct bundle_header header = BUNDLE_HEADER_INIT;
int fd = read_bundle_header(path, &header);
int has_filter = header.filter.choice != LOFC_DISABLED;
if (fd > 0)
close(fd);
bundle_header_release(&header);
if (has_filter)
die(_("cannot clone from filtered bundle"));
}
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);
/*
* Now that we know what algorithm the remote side is using, let's set
* ours to the same thing.
*/
hash_algo = hash_algo_by_ptr(transport_get_hash_algo(transport));
initialize_repository_version(hash_algo, the_repository->ref_storage_format, 1);
repo_set_hash_algo(the_repository, hash_algo);
create_reference_database(the_repository->ref_storage_format, NULL, 1);
/*
* Before fetching from the remote, download and install bundle
* data from the --bundle-uri option.
*/
if (bundle_uri) {
int has_heuristic = 0;
/* At this point, we need the_repository to match the cloned repo. */
if (repo_init(the_repository, git_dir, work_tree))
warning(_("failed to initialize the repo, skipping bundle URI"));
else if (fetch_bundle_uri(the_repository, bundle_uri, &has_heuristic))
warning(_("failed to fetch objects from bundle URI '%s'"),
bundle_uri);
else if (has_heuristic)
git_config_set_gently("fetch.bundleuri", bundle_uri);
} else {
/*
* Populate transport->got_remote_bundle_uri and
* transport->bundle_uri. We might get nothing.
*/
transport_get_remote_bundle_uri(transport);
if (transport->bundles &&
hashmap_get_size(&transport->bundles->bundles)) {
/* At this point, we need the_repository to match the cloned repo. */
if (repo_init(the_repository, git_dir, work_tree))
warning(_("failed to initialize the repo, skipping bundle URI"));
else if (fetch_bundle_list(the_repository,
transport->bundles))
warning(_("failed to fetch advertised bundles"));
} else {
clear_bundle_list(transport->bundles);
FREE_AND_NULL(transport->bundles);
}
}
if (refs)
mapped_refs = wanted_peer_refs(refs, &remote->fetch);
if (mapped_refs) {
/*
* 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 if (remote_head_points_at) {
our_head_points_at = remote_head_points_at;
} else if (remote_head) {
our_head_points_at = NULL;
} else {
char *to_free = NULL;
const char *branch;
if (!mapped_refs) {
warning(_("You appear to have cloned an empty repository."));
option_no_checkout = 1;
}
if (transport_ls_refs_options.unborn_head_target &&
skip_prefix(transport_ls_refs_options.unborn_head_target,
"refs/heads/", &branch)) {
unborn_head = xstrdup(transport_ls_refs_options.unborn_head_target);
} else {
branch = to_free = repo_default_branch_name(the_repository, 0);
unborn_head = xstrfmt("refs/heads/%s", branch);
}
/*
* We may have selected a local default branch name "foo",
* and even though the remote's HEAD does not point there,
* it may still have a "foo" branch. If so, set it up so
* that we can follow the usual checkout code later.
*
* Note that for an empty repo we'll already have set
* option_no_checkout above, which would work against us here.
* But for an empty repo, find_remote_branch() can never find
* a match.
*/
our_head_points_at = find_remote_branch(mapped_refs, branch);
free(to_free);
}
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 (mapped_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, unborn_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, 0);
transport_disconnect(transport);
if (option_dissociate) {
close_object_store(the_repository->objects);
dissociate_from_references();
}
if (option_sparse_checkout && git_sparse_checkout_init(dir))
return 1;
junk_mode = JUNK_LEAVE_REPO;
err = checkout(submodule_progress, filter_submodules,
ref_storage_format);
free(remote_name);
strbuf_release(&reflog_msg);
strbuf_release(&branch_top);
strbuf_release(&buf);
strbuf_release(&key);
free_refs(mapped_refs);
free_refs(remote_head_points_at);
free(unborn_head);
free(dir);
free(path);
free(repo_to_free);
UNLEAK(repo);
junk_mode = JUNK_LEAVE_ALL;
transport_ls_refs_options_release(&transport_ls_refs_options);
return err;
}
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