#include "cache.h"
+#include "repository.h"
#include "config.h"
#include "lockfile.h"
#include "refs.h"
#include "pkt-line.h"
#include "commit.h"
#include "tag.h"
-#include "exec_cmd.h"
+#include "exec-cmd.h"
#include "pack.h"
#include "sideband.h"
#include "fetch-pack.h"
#include "connect.h"
#include "transport.h"
#include "version.h"
-#include "prio-queue.h"
#include "sha1-array.h"
#include "oidset.h"
#include "packfile.h"
+#include "object-store.h"
+#include "connected.h"
+#include "fetch-negotiator.h"
+#include "fsck.h"
static int transfer_unpack_limit = -1;
static int fetch_unpack_limit = -1;
static int fetch_fsck_objects = -1;
static int transfer_fsck_objects = -1;
static int agent_supported;
+static int server_supports_filtering;
static struct lock_file shallow_lock;
static const char *alternate_shallow_file;
+static struct strbuf fsck_msg_types = STRBUF_INIT;
/* Remember to update object flag allocation in object.h */
#define COMPLETE (1U << 0)
-#define COMMON (1U << 1)
-#define COMMON_REF (1U << 2)
-#define SEEN (1U << 3)
-#define POPPED (1U << 4)
-#define ALTERNATE (1U << 5)
-
-static int marked;
+#define ALTERNATE (1U << 1)
/*
* After sending this many "have"s if we do not get any new ACK , we
*/
#define MAX_IN_VAIN 256
-static struct prio_queue rev_list = { compare_commits_by_commit_date };
-static int non_common_revs, multi_ack, use_sideband;
+static int multi_ack, use_sideband;
/* Allow specifying sha1 if it is a ref tip. */
#define ALLOW_TIP_SHA1 01
/* Allow request of a sha1 if it is reachable from a ref (possibly hidden ref). */
size_t nr, alloc;
};
-static void cache_one_alternate(const char *refname,
- const struct object_id *oid,
+static void cache_one_alternate(const struct object_id *oid,
void *vcache)
{
struct alternate_object_cache *cache = vcache;
- struct object *obj = parse_object(oid);
+ struct object *obj = parse_object(the_repository, oid);
if (!obj || (obj->flags & ALTERNATE))
return;
cache->items[cache->nr++] = obj;
}
-static void for_each_cached_alternate(void (*cb)(struct object *))
+static void for_each_cached_alternate(struct fetch_negotiator *negotiator,
+ void (*cb)(struct fetch_negotiator *,
+ struct object *))
{
static int initialized;
static struct alternate_object_cache cache;
}
for (i = 0; i < cache.nr; i++)
- cb(cache.items[i]);
+ cb(negotiator, cache.items[i]);
}
-static void rev_list_push(struct commit *commit, int mark)
+static int rev_list_insert_ref(struct fetch_negotiator *negotiator,
+ const char *refname,
+ const struct object_id *oid)
{
- if (!(commit->object.flags & mark)) {
- commit->object.flags |= mark;
-
- if (parse_commit(commit))
- return;
-
- prio_queue_put(&rev_list, commit);
-
- if (!(commit->object.flags & COMMON))
- non_common_revs++;
- }
-}
-
-static int rev_list_insert_ref(const char *refname, const struct object_id *oid)
-{
- struct object *o = deref_tag(parse_object(oid), refname, 0);
+ struct object *o = deref_tag(the_repository,
+ parse_object(the_repository, oid),
+ refname, 0);
if (o && o->type == OBJ_COMMIT)
- rev_list_push((struct commit *)o, SEEN);
+ negotiator->add_tip(negotiator, (struct commit *)o);
return 0;
}
static int rev_list_insert_ref_oid(const char *refname, const struct object_id *oid,
int flag, void *cb_data)
{
- return rev_list_insert_ref(refname, oid);
-}
-
-static int clear_marks(const char *refname, const struct object_id *oid,
- int flag, void *cb_data)
-{
- struct object *o = deref_tag(parse_object(oid), refname, 0);
-
- if (o && o->type == OBJ_COMMIT)
- clear_commit_marks((struct commit *)o,
- COMMON | COMMON_REF | SEEN | POPPED);
- return 0;
-}
-
-/*
- This function marks a rev and its ancestors as common.
- In some cases, it is desirable to mark only the ancestors (for example
- when only the server does not yet know that they are common).
-*/
-
-static void mark_common(struct commit *commit,
- int ancestors_only, int dont_parse)
-{
- if (commit != NULL && !(commit->object.flags & COMMON)) {
- struct object *o = (struct object *)commit;
-
- if (!ancestors_only)
- o->flags |= COMMON;
-
- if (!(o->flags & SEEN))
- rev_list_push(commit, SEEN);
- else {
- struct commit_list *parents;
-
- if (!ancestors_only && !(o->flags & POPPED))
- non_common_revs--;
- if (!o->parsed && !dont_parse)
- if (parse_commit(commit))
- return;
-
- for (parents = commit->parents;
- parents;
- parents = parents->next)
- mark_common(parents->item, 0, dont_parse);
- }
- }
-}
-
-/*
- Get the next rev to send, ignoring the common.
-*/
-
-static const struct object_id *get_rev(void)
-{
- struct commit *commit = NULL;
-
- while (commit == NULL) {
- unsigned int mark;
- struct commit_list *parents;
-
- if (rev_list.nr == 0 || non_common_revs == 0)
- return NULL;
-
- commit = prio_queue_get(&rev_list);
- parse_commit(commit);
- parents = commit->parents;
-
- commit->object.flags |= POPPED;
- if (!(commit->object.flags & COMMON))
- non_common_revs--;
-
- if (commit->object.flags & COMMON) {
- /* do not send "have", and ignore ancestors */
- commit = NULL;
- mark = COMMON | SEEN;
- } else if (commit->object.flags & COMMON_REF)
- /* send "have", and ignore ancestors */
- mark = COMMON | SEEN;
- else
- /* send "have", also for its ancestors */
- mark = SEEN;
-
- while (parents) {
- if (!(parents->item->object.flags & SEEN))
- rev_list_push(parents->item, mark);
- if (mark & COMMON)
- mark_common(parents->item, 1, 0);
- parents = parents->next;
- }
- }
-
- return &commit->object.oid;
+ return rev_list_insert_ref(cb_data, refname, oid);
}
enum ack_type {
ACK_ready
};
-static void consume_shallow_list(struct fetch_pack_args *args, int fd)
+static void consume_shallow_list(struct fetch_pack_args *args,
+ struct packet_reader *reader)
{
if (args->stateless_rpc && args->deepen) {
/* If we sent a depth we will get back "duplicate"
* shallow and unshallow commands every time there
* is a block of have lines exchanged.
*/
- char *line;
- while ((line = packet_read_line(fd, NULL))) {
- if (starts_with(line, "shallow "))
+ while (packet_reader_read(reader) == PACKET_READ_NORMAL) {
+ if (starts_with(reader->line, "shallow "))
continue;
- if (starts_with(line, "unshallow "))
+ if (starts_with(reader->line, "unshallow "))
continue;
die(_("git fetch-pack: expected shallow list"));
}
+ if (reader->status != PACKET_READ_FLUSH)
+ die(_("git fetch-pack: expected a flush packet after shallow list"));
}
}
-static enum ack_type get_ack(int fd, struct object_id *result_oid)
+static enum ack_type get_ack(struct packet_reader *reader,
+ struct object_id *result_oid)
{
int len;
- char *line = packet_read_line(fd, &len);
const char *arg;
- if (!len)
- die(_("git fetch-pack: expected ACK/NAK, got EOF"));
- if (!strcmp(line, "NAK"))
+ if (packet_reader_read(reader) != PACKET_READ_NORMAL)
+ die(_("git fetch-pack: expected ACK/NAK, got a flush packet"));
+ len = reader->pktlen;
+
+ if (!strcmp(reader->line, "NAK"))
return NAK;
- if (skip_prefix(line, "ACK ", &arg)) {
- if (!get_oid_hex(arg, result_oid)) {
- arg += 40;
- len -= arg - line;
+ if (skip_prefix(reader->line, "ACK ", &arg)) {
+ const char *p;
+ if (!parse_oid_hex(arg, result_oid, &p)) {
+ len -= p - reader->line;
if (len < 1)
return ACK;
- if (strstr(arg, "continue"))
+ if (strstr(p, "continue"))
return ACK_continue;
- if (strstr(arg, "common"))
+ if (strstr(p, "common"))
return ACK_common;
- if (strstr(arg, "ready"))
+ if (strstr(p, "ready"))
return ACK_ready;
return ACK;
}
}
- if (skip_prefix(line, "ERR ", &arg))
- die(_("remote error: %s"), arg);
- die(_("git fetch-pack: expected ACK/NAK, got '%s'"), line);
+ die(_("git fetch-pack: expected ACK/NAK, got '%s'"), reader->line);
}
static void send_request(struct fetch_pack_args *args,
if (args->stateless_rpc) {
send_sideband(fd, -1, buf->buf, buf->len, LARGE_PACKET_MAX);
packet_flush(fd);
- } else
- write_or_die(fd, buf->buf, buf->len);
+ } else {
+ if (write_in_full(fd, buf->buf, buf->len) < 0)
+ die_errno(_("unable to write to remote"));
+ }
}
-static void insert_one_alternate_object(struct object *obj)
+static void insert_one_alternate_object(struct fetch_negotiator *negotiator,
+ struct object *obj)
{
- rev_list_insert_ref(NULL, &obj->oid);
+ rev_list_insert_ref(negotiator, NULL, &obj->oid);
}
#define INITIAL_FLUSH 16
#define PIPESAFE_FLUSH 32
#define LARGE_FLUSH 16384
-static int next_flush(struct fetch_pack_args *args, int count)
+static int next_flush(int stateless_rpc, int count)
{
- if (args->stateless_rpc) {
+ if (stateless_rpc) {
if (count < LARGE_FLUSH)
count <<= 1;
else
return count;
}
-static int find_common(struct fetch_pack_args *args,
+static void mark_tips(struct fetch_negotiator *negotiator,
+ const struct oid_array *negotiation_tips)
+{
+ int i;
+
+ if (!negotiation_tips) {
+ for_each_ref(rev_list_insert_ref_oid, negotiator);
+ return;
+ }
+
+ for (i = 0; i < negotiation_tips->nr; i++)
+ rev_list_insert_ref(negotiator, NULL,
+ &negotiation_tips->oid[i]);
+ return;
+}
+
+static int find_common(struct fetch_negotiator *negotiator,
+ struct fetch_pack_args *args,
int fd[2], struct object_id *result_oid,
struct ref *refs)
{
int got_ready = 0;
struct strbuf req_buf = STRBUF_INIT;
size_t state_len = 0;
+ struct packet_reader reader;
if (args->stateless_rpc && multi_ack == 1)
die(_("--stateless-rpc requires multi_ack_detailed"));
- if (marked)
- for_each_ref(clear_marks, NULL);
- marked = 1;
- for_each_ref(rev_list_insert_ref_oid, NULL);
- for_each_cached_alternate(insert_one_alternate_object);
+ packet_reader_init(&reader, fd[0], NULL, 0,
+ PACKET_READ_CHOMP_NEWLINE |
+ PACKET_READ_DIE_ON_ERR_PACKET);
+
+ if (!args->no_dependents) {
+ mark_tips(negotiator, args->negotiation_tips);
+ for_each_cached_alternate(negotiator, insert_one_alternate_object);
+ }
fetching = 0;
for ( ; refs ; refs = refs->next) {
* We use lookup_object here because we are only
* interested in the case we *know* the object is
* reachable and we have already scanned it.
+ *
+ * Do this only if args->no_dependents is false (if it is true,
+ * we cannot trust the object flags).
*/
- if (((o = lookup_object(remote->hash)) != NULL) &&
+ if (!args->no_dependents &&
+ ((o = lookup_object(the_repository, remote)) != NULL) &&
(o->flags & COMPLETE)) {
continue;
}
if (deepen_not_ok) strbuf_addstr(&c, " deepen-not");
if (agent_supported) strbuf_addf(&c, " agent=%s",
git_user_agent_sanitized());
+ if (args->filter_options.choice)
+ strbuf_addstr(&c, " filter");
packet_buf_write(&req_buf, "want %s%s\n", remote_hex, c.buf);
strbuf_release(&c);
} else
return 1;
}
- if (is_repository_shallow())
+ if (is_repository_shallow(the_repository))
write_shallow_commits(&req_buf, 1, NULL);
if (args->depth > 0)
packet_buf_write(&req_buf, "deepen %d", args->depth);
packet_buf_write(&req_buf, "deepen-not %s", s->string);
}
}
+ if (server_supports_filtering && args->filter_options.choice) {
+ const char *spec =
+ expand_list_objects_filter_spec(&args->filter_options);
+ packet_buf_write(&req_buf, "filter %s", spec);
+ }
packet_buf_flush(&req_buf);
state_len = req_buf.len;
if (args->deepen) {
- char *line;
const char *arg;
struct object_id oid;
send_request(args, fd[1], &req_buf);
- while ((line = packet_read_line(fd[0], NULL))) {
- if (skip_prefix(line, "shallow ", &arg)) {
+ while (packet_reader_read(&reader) == PACKET_READ_NORMAL) {
+ if (skip_prefix(reader.line, "shallow ", &arg)) {
if (get_oid_hex(arg, &oid))
- die(_("invalid shallow line: %s"), line);
- register_shallow(&oid);
+ die(_("invalid shallow line: %s"), reader.line);
+ register_shallow(the_repository, &oid);
continue;
}
- if (skip_prefix(line, "unshallow ", &arg)) {
+ if (skip_prefix(reader.line, "unshallow ", &arg)) {
if (get_oid_hex(arg, &oid))
- die(_("invalid unshallow line: %s"), line);
- if (!lookup_object(oid.hash))
- die(_("object not found: %s"), line);
+ die(_("invalid unshallow line: %s"), reader.line);
+ if (!lookup_object(the_repository, &oid))
+ die(_("object not found: %s"), reader.line);
/* make sure that it is parsed as shallow */
- if (!parse_object(&oid))
- die(_("error in object: %s"), line);
+ if (!parse_object(the_repository, &oid))
+ die(_("error in object: %s"), reader.line);
if (unregister_shallow(&oid))
- die(_("no shallow found: %s"), line);
+ die(_("no shallow found: %s"), reader.line);
continue;
}
- die(_("expected shallow/unshallow, got %s"), line);
+ die(_("expected shallow/unshallow, got %s"), reader.line);
}
} else if (!args->stateless_rpc)
send_request(args, fd[1], &req_buf);
state_len = 0;
}
+ trace2_region_enter("fetch-pack", "negotiation_v0_v1", the_repository);
flushes = 0;
retval = -1;
- while ((oid = get_rev())) {
+ if (args->no_dependents)
+ goto done;
+ while ((oid = negotiator->next(negotiator))) {
packet_buf_write(&req_buf, "have %s\n", oid_to_hex(oid));
print_verbose(args, "have %s", oid_to_hex(oid));
in_vain++;
send_request(args, fd[1], &req_buf);
strbuf_setlen(&req_buf, state_len);
flushes++;
- flush_at = next_flush(args, count);
+ flush_at = next_flush(args->stateless_rpc, count);
/*
* We keep one window "ahead" of the other side, and
if (!args->stateless_rpc && count == INITIAL_FLUSH)
continue;
- consume_shallow_list(args, fd[0]);
+ consume_shallow_list(args, &reader);
do {
- ack = get_ack(fd[0], result_oid);
+ ack = get_ack(&reader, result_oid);
if (ack)
print_verbose(args, _("got %s %d %s"), "ack",
ack, oid_to_hex(result_oid));
case ACK_ready:
case ACK_continue: {
struct commit *commit =
- lookup_commit(result_oid);
+ lookup_commit(the_repository,
+ result_oid);
+ int was_common;
+
if (!commit)
die(_("invalid commit %s"), oid_to_hex(result_oid));
+ was_common = negotiator->ack(negotiator, commit);
if (args->stateless_rpc
&& ack == ACK_common
- && !(commit->object.flags & COMMON)) {
+ && !was_common) {
/* We need to replay the have for this object
* on the next RPC request so the peer knows
* it is in common with us.
} else if (!args->stateless_rpc
|| ack != ACK_common)
in_vain = 0;
- mark_common(commit, 0, 1);
retval = 0;
got_continue = 1;
- if (ack == ACK_ready) {
- clear_prio_queue(&rev_list);
+ if (ack == ACK_ready)
got_ready = 1;
- }
break;
}
}
print_verbose(args, _("giving up"));
break; /* give up */
}
+ if (got_ready)
+ break;
}
}
done:
+ trace2_region_leave("fetch-pack", "negotiation_v0_v1", the_repository);
if (!got_ready || !no_done) {
packet_buf_write(&req_buf, "done\n");
send_request(args, fd[1], &req_buf);
strbuf_release(&req_buf);
if (!got_ready || !no_done)
- consume_shallow_list(args, fd[0]);
+ consume_shallow_list(args, &reader);
while (flushes || multi_ack) {
- int ack = get_ack(fd[0], result_oid);
+ int ack = get_ack(&reader, result_oid);
if (ack) {
print_verbose(args, _("got %s (%d) %s"), "ack",
ack, oid_to_hex(result_oid));
static int mark_complete(const struct object_id *oid)
{
- struct object *o = parse_object(oid);
+ struct object *o = parse_object(the_repository, oid);
while (o && o->type == OBJ_TAG) {
struct tag *t = (struct tag *) o;
if (!t->tagged)
break; /* broken repository */
o->flags |= COMPLETE;
- o = parse_object(&t->tagged->oid);
+ o = parse_object(the_repository, &t->tagged->oid);
}
if (o && o->type == OBJ_COMMIT) {
struct commit *commit = (struct commit *)o;
oidset_insert(oids, &refs->old_oid);
}
-static int tip_oids_contain(struct oidset *tip_oids,
- struct ref *unmatched, struct ref *newlist,
- const struct object_id *id)
+static int is_unmatched_ref(const struct ref *ref)
{
- /*
- * Note that this only looks at the ref lists the first time it's
- * called. This works out in filter_refs() because even though it may
- * add to "newlist" between calls, the additions will always be for
- * oids that are already in the set.
- */
- if (!tip_oids->map.map.tablesize) {
- add_refs_to_oidset(tip_oids, unmatched);
- add_refs_to_oidset(tip_oids, newlist);
- }
- return oidset_contains(tip_oids, id);
+ struct object_id oid;
+ const char *p;
+ return ref->match_status == REF_NOT_MATCHED &&
+ !parse_oid_hex(ref->name, &oid, &p) &&
+ *p == '\0' &&
+ oideq(&oid, &ref->old_oid);
}
static void filter_refs(struct fetch_pack_args *args,
struct ref *ref, *next;
struct oidset tip_oids = OIDSET_INIT;
int i;
+ int strict = !(allow_unadvertised_object_request &
+ (ALLOW_TIP_SHA1 | ALLOW_REACHABLE_SHA1));
i = 0;
for (ref = *refs; ref; ref = next) {
next = ref->next;
if (starts_with(ref->name, "refs/") &&
- check_refname_format(ref->name, 0))
- ; /* trash */
- else {
+ check_refname_format(ref->name, 0)) {
+ /*
+ * trash or a peeled value; do not even add it to
+ * unmatched list
+ */
+ free_one_ref(ref);
+ continue;
+ } else {
while (i < nr_sought) {
int cmp = strcmp(ref->name, sought[i]->name);
if (cmp < 0)
}
i++;
}
- }
- if (!keep && args->fetch_all &&
- (!args->deepen || !starts_with(ref->name, "refs/tags/")))
- keep = 1;
+ if (!keep && args->fetch_all &&
+ (!args->deepen || !starts_with(ref->name, "refs/tags/")))
+ keep = 1;
+ }
if (keep) {
*newtail = ref;
}
}
+ if (strict) {
+ for (i = 0; i < nr_sought; i++) {
+ ref = sought[i];
+ if (!is_unmatched_ref(ref))
+ continue;
+
+ add_refs_to_oidset(&tip_oids, unmatched);
+ add_refs_to_oidset(&tip_oids, newlist);
+ break;
+ }
+ }
+
/* Append unmatched requests to the list */
for (i = 0; i < nr_sought; i++) {
- struct object_id oid;
- const char *p;
-
ref = sought[i];
- if (ref->match_status != REF_NOT_MATCHED)
- continue;
- if (parse_oid_hex(ref->name, &oid, &p) ||
- *p != '\0' ||
- oidcmp(&oid, &ref->old_oid))
+ if (!is_unmatched_ref(ref))
continue;
- if ((allow_unadvertised_object_request &
- (ALLOW_TIP_SHA1 | ALLOW_REACHABLE_SHA1)) ||
- tip_oids_contain(&tip_oids, unmatched, newlist,
- &ref->old_oid)) {
+ if (!strict || oidset_contains(&tip_oids, &ref->old_oid)) {
ref->match_status = REF_MATCHED;
*newtail = copy_ref(ref);
newtail = &(*newtail)->next;
}
oidset_clear(&tip_oids);
- for (ref = unmatched; ref; ref = next) {
- next = ref->next;
- free(ref);
- }
+ free_refs(unmatched);
*refs = newlist;
}
-static void mark_alternate_complete(struct object *obj)
+static void mark_alternate_complete(struct fetch_negotiator *unused,
+ struct object *obj)
{
mark_complete(&obj->oid);
}
-static int everything_local(struct fetch_pack_args *args,
- struct ref **refs,
- struct ref **sought, int nr_sought)
+struct loose_object_iter {
+ struct oidset *loose_object_set;
+ struct ref *refs;
+};
+
+/*
+ * Mark recent commits available locally and reachable from a local ref as
+ * COMPLETE. If args->no_dependents is false, also mark COMPLETE remote refs as
+ * COMMON_REF (otherwise, we are not planning to participate in negotiation, and
+ * thus do not need COMMON_REF marks).
+ *
+ * The cutoff time for recency is determined by this heuristic: it is the
+ * earliest commit time of the objects in refs that are commits and that we know
+ * the commit time of.
+ */
+static void mark_complete_and_common_ref(struct fetch_negotiator *negotiator,
+ struct fetch_pack_args *args,
+ struct ref **refs)
{
struct ref *ref;
- int retval;
+ int old_save_commit_buffer = save_commit_buffer;
timestamp_t cutoff = 0;
save_commit_buffer = 0;
+ trace2_region_enter("fetch-pack", "parse_remote_refs_and_find_cutoff", NULL);
for (ref = *refs; ref; ref = ref->next) {
struct object *o;
- if (!has_object_file(&ref->old_oid))
+ if (!has_object_file_with_flags(&ref->old_oid,
+ OBJECT_INFO_QUICK |
+ OBJECT_INFO_SKIP_FETCH_OBJECT))
continue;
-
- o = parse_object(&ref->old_oid);
+ o = parse_object(the_repository, &ref->old_oid);
if (!o)
continue;
- /* We already have it -- which may mean that we were
+ /*
+ * We already have it -- which may mean that we were
* in sync with the other side at some time after
* that (it is OK if we guess wrong here).
*/
cutoff = commit->date;
}
}
+ trace2_region_leave("fetch-pack", "parse_remote_refs_and_find_cutoff", NULL);
+ /*
+ * This block marks all local refs as COMPLETE, and then recursively marks all
+ * parents of those refs as COMPLETE.
+ */
+ trace2_region_enter("fetch-pack", "mark_complete_local_refs", NULL);
if (!args->deepen) {
for_each_ref(mark_complete_oid, NULL);
- for_each_cached_alternate(mark_alternate_complete);
+ for_each_cached_alternate(NULL, mark_alternate_complete);
commit_list_sort_by_date(&complete);
if (cutoff)
mark_recent_complete_commits(args, cutoff);
}
+ trace2_region_leave("fetch-pack", "mark_complete_local_refs", NULL);
/*
* Mark all complete remote refs as common refs.
* Don't mark them common yet; the server has to be told so first.
*/
+ trace2_region_enter("fetch-pack", "mark_common_remote_refs", NULL);
for (ref = *refs; ref; ref = ref->next) {
- struct object *o = deref_tag(lookup_object(ref->old_oid.hash),
+ struct object *o = deref_tag(the_repository,
+ lookup_object(the_repository,
+ &ref->old_oid),
NULL, 0);
if (!o || o->type != OBJ_COMMIT || !(o->flags & COMPLETE))
continue;
- if (!(o->flags & SEEN)) {
- rev_list_push((struct commit *)o, COMMON_REF | SEEN);
-
- mark_common((struct commit *)o, 1, 1);
- }
+ negotiator->known_common(negotiator,
+ (struct commit *)o);
}
+ trace2_region_leave("fetch-pack", "mark_common_remote_refs", NULL);
- filter_refs(args, refs, sought, nr_sought);
+ save_commit_buffer = old_save_commit_buffer;
+}
+
+/*
+ * Returns 1 if every object pointed to by the given remote refs is available
+ * locally and reachable from a local ref, and 0 otherwise.
+ */
+static int everything_local(struct fetch_pack_args *args,
+ struct ref **refs)
+{
+ struct ref *ref;
+ int retval;
for (retval = 1, ref = *refs; ref ; ref = ref->next) {
const struct object_id *remote = &ref->old_oid;
struct object *o;
- o = lookup_object(remote->hash);
+ o = lookup_object(the_repository, remote);
if (!o || !(o->flags & COMPLETE)) {
retval = 0;
print_verbose(args, "want %s (%s)", oid_to_hex(remote),
print_verbose(args, _("already have %s (%s)"), oid_to_hex(remote),
ref->name);
}
+
return retval;
}
return ret;
}
+static void write_promisor_file(const char *keep_name,
+ struct ref **sought, int nr_sought)
+{
+ struct strbuf promisor_name = STRBUF_INIT;
+ int suffix_stripped;
+ FILE *output;
+ int i;
+
+ strbuf_addstr(&promisor_name, keep_name);
+ suffix_stripped = strbuf_strip_suffix(&promisor_name, ".keep");
+ if (!suffix_stripped)
+ BUG("name of pack lockfile should end with .keep (was '%s')",
+ keep_name);
+ strbuf_addstr(&promisor_name, ".promisor");
+
+ output = xfopen(promisor_name.buf, "w");
+ for (i = 0; i < nr_sought; i++)
+ fprintf(output, "%s %s\n", oid_to_hex(&sought[i]->old_oid),
+ sought[i]->name);
+ fclose(output);
+
+ strbuf_release(&promisor_name);
+}
+
static int get_pack(struct fetch_pack_args *args,
- int xd[2], char **pack_lockfile)
+ int xd[2], char **pack_lockfile,
+ struct ref **sought, int nr_sought)
{
struct async demux;
int do_keep = args->keep_pack;
argv_array_push(&cmd.args, alternate_shallow_file);
}
- if (do_keep) {
+ if (do_keep || args->from_promisor) {
if (pack_lockfile)
cmd.out = -1;
cmd_name = "index-pack";
argv_array_push(&cmd.args, "-v");
if (args->use_thin_pack)
argv_array_push(&cmd.args, "--fix-thin");
- if (args->lock_pack || unpack_limit) {
+ if (do_keep && (args->lock_pack || unpack_limit)) {
char hostname[HOST_NAME_MAX + 1];
if (xgethostname(hostname, sizeof(hostname)))
xsnprintf(hostname, sizeof(hostname), "localhost");
}
if (args->check_self_contained_and_connected)
argv_array_push(&cmd.args, "--check-self-contained-and-connected");
+ /*
+ * If we're obtaining the filename of a lockfile, we'll use
+ * that filename to write a .promisor file with more
+ * information below. If not, we need index-pack to do it for
+ * us.
+ */
+ if (!(do_keep && pack_lockfile) && args->from_promisor)
+ argv_array_push(&cmd.args, "--promisor");
}
else {
cmd_name = "unpack-objects";
? fetch_fsck_objects
: transfer_fsck_objects >= 0
? transfer_fsck_objects
- : 0)
- argv_array_push(&cmd.args, "--strict");
+ : 0) {
+ if (args->from_promisor)
+ /*
+ * We cannot use --strict in index-pack because it
+ * checks both broken objects and links, but we only
+ * want to check for broken objects.
+ */
+ argv_array_push(&cmd.args, "--fsck-objects");
+ else
+ argv_array_pushf(&cmd.args, "--strict%s",
+ fsck_msg_types.buf);
+ }
cmd.in = demux.out;
cmd.git_cmd = 1;
die(_("%s failed"), cmd_name);
if (use_sideband && finish_async(&demux))
die(_("error in sideband demultiplexer"));
+
+ /*
+ * Now that index-pack has succeeded, write the promisor file using the
+ * obtained .keep filename if necessary
+ */
+ if (do_keep && pack_lockfile && args->from_promisor)
+ write_promisor_file(*pack_lockfile, sought, nr_sought);
+
return 0;
}
struct shallow_info *si,
char **pack_lockfile)
{
+ struct repository *r = the_repository;
struct ref *ref = copy_ref_list(orig_ref);
struct object_id oid;
const char *agent_feature;
int agent_len;
+ struct fetch_negotiator negotiator_alloc;
+ struct fetch_negotiator *negotiator;
+
+ if (args->no_dependents) {
+ negotiator = NULL;
+ } else {
+ negotiator = &negotiator_alloc;
+ fetch_negotiator_init(r, negotiator);
+ }
sort_ref_list(&ref, ref_compare_name);
QSORT(sought, nr_sought, cmp_ref_by_name);
- if ((args->depth > 0 || is_repository_shallow()) && !server_supports("shallow"))
+ if ((agent_feature = server_feature_value("agent", &agent_len))) {
+ agent_supported = 1;
+ if (agent_len)
+ print_verbose(args, _("Server version is %.*s"),
+ agent_len, agent_feature);
+ }
+
+ if (server_supports("shallow"))
+ print_verbose(args, _("Server supports %s"), "shallow");
+ else if (args->depth > 0 || is_repository_shallow(r))
die(_("Server does not support shallow clients"));
if (args->depth > 0 || args->deepen_since || args->deepen_not)
args->deepen = 1;
if (server_supports("multi_ack_detailed")) {
- print_verbose(args, _("Server supports multi_ack_detailed"));
+ print_verbose(args, _("Server supports %s"), "multi_ack_detailed");
multi_ack = 2;
if (server_supports("no-done")) {
- print_verbose(args, _("Server supports no-done"));
+ print_verbose(args, _("Server supports %s"), "no-done");
if (args->stateless_rpc)
no_done = 1;
}
}
else if (server_supports("multi_ack")) {
- print_verbose(args, _("Server supports multi_ack"));
+ print_verbose(args, _("Server supports %s"), "multi_ack");
multi_ack = 1;
}
if (server_supports("side-band-64k")) {
- print_verbose(args, _("Server supports side-band-64k"));
+ print_verbose(args, _("Server supports %s"), "side-band-64k");
use_sideband = 2;
}
else if (server_supports("side-band")) {
- print_verbose(args, _("Server supports side-band"));
+ print_verbose(args, _("Server supports %s"), "side-band");
use_sideband = 1;
}
if (server_supports("allow-tip-sha1-in-want")) {
- print_verbose(args, _("Server supports allow-tip-sha1-in-want"));
+ print_verbose(args, _("Server supports %s"), "allow-tip-sha1-in-want");
allow_unadvertised_object_request |= ALLOW_TIP_SHA1;
}
if (server_supports("allow-reachable-sha1-in-want")) {
- print_verbose(args, _("Server supports allow-reachable-sha1-in-want"));
+ print_verbose(args, _("Server supports %s"), "allow-reachable-sha1-in-want");
allow_unadvertised_object_request |= ALLOW_REACHABLE_SHA1;
}
- if (!server_supports("thin-pack"))
+ if (server_supports("thin-pack"))
+ print_verbose(args, _("Server supports %s"), "thin-pack");
+ else
args->use_thin_pack = 0;
- if (!server_supports("no-progress"))
+ if (server_supports("no-progress"))
+ print_verbose(args, _("Server supports %s"), "no-progress");
+ else
args->no_progress = 0;
- if (!server_supports("include-tag"))
+ if (server_supports("include-tag"))
+ print_verbose(args, _("Server supports %s"), "include-tag");
+ else
args->include_tag = 0;
if (server_supports("ofs-delta"))
- print_verbose(args, _("Server supports ofs-delta"));
+ print_verbose(args, _("Server supports %s"), "ofs-delta");
else
prefer_ofs_delta = 0;
- if ((agent_feature = server_feature_value("agent", &agent_len))) {
- agent_supported = 1;
- if (agent_len)
- print_verbose(args, _("Server version is %.*s"),
- agent_len, agent_feature);
+ if (server_supports("filter")) {
+ server_supports_filtering = 1;
+ print_verbose(args, _("Server supports %s"), "filter");
+ } else if (args->filter_options.choice) {
+ warning("filtering not recognized by server, ignoring");
}
- if (server_supports("deepen-since"))
+
+ if (server_supports("deepen-since")) {
+ print_verbose(args, _("Server supports %s"), "deepen-since");
deepen_since_ok = 1;
- else if (args->deepen_since)
+ } else if (args->deepen_since)
die(_("Server does not support --shallow-since"));
- if (server_supports("deepen-not"))
+ if (server_supports("deepen-not")) {
+ print_verbose(args, _("Server supports %s"), "deepen-not");
deepen_not_ok = 1;
- else if (args->deepen_not)
+ } else if (args->deepen_not)
die(_("Server does not support --shallow-exclude"));
- if (!server_supports("deepen-relative") && args->deepen_relative)
+ if (server_supports("deepen-relative"))
+ print_verbose(args, _("Server supports %s"), "deepen-relative");
+ else if (args->deepen_relative)
die(_("Server does not support --deepen"));
- if (everything_local(args, &ref, sought, nr_sought)) {
- packet_flush(fd[1]);
- goto all_done;
+ if (!args->no_dependents) {
+ mark_complete_and_common_ref(negotiator, args, &ref);
+ filter_refs(args, &ref, sought, nr_sought);
+ if (everything_local(args, &ref)) {
+ packet_flush(fd[1]);
+ goto all_done;
+ }
+ } else {
+ filter_refs(args, &ref, sought, nr_sought);
}
- if (find_common(args, fd, &oid, ref) < 0)
+ if (find_common(negotiator, args, fd, &oid, ref) < 0)
if (!args->keep_pack)
/* When cloning, it is not unusual to have
* no common commit.
alternate_shallow_file = setup_temporary_shallow(si->shallow);
else
alternate_shallow_file = NULL;
- if (get_pack(args, fd, pack_lockfile))
+ if (get_pack(args, fd, pack_lockfile, sought, nr_sought))
die(_("git fetch-pack: fetch failed."));
all_done:
+ if (negotiator)
+ negotiator->release(negotiator);
return ref;
}
+static void add_shallow_requests(struct strbuf *req_buf,
+ const struct fetch_pack_args *args)
+{
+ if (is_repository_shallow(the_repository))
+ write_shallow_commits(req_buf, 1, NULL);
+ if (args->depth > 0)
+ packet_buf_write(req_buf, "deepen %d", args->depth);
+ if (args->deepen_since) {
+ timestamp_t max_age = approxidate(args->deepen_since);
+ packet_buf_write(req_buf, "deepen-since %"PRItime, max_age);
+ }
+ if (args->deepen_not) {
+ int i;
+ for (i = 0; i < args->deepen_not->nr; i++) {
+ struct string_list_item *s = args->deepen_not->items + i;
+ packet_buf_write(req_buf, "deepen-not %s", s->string);
+ }
+ }
+ if (args->deepen_relative)
+ packet_buf_write(req_buf, "deepen-relative\n");
+}
+
+static void add_wants(int no_dependents, const struct ref *wants, struct strbuf *req_buf)
+{
+ int use_ref_in_want = server_supports_feature("fetch", "ref-in-want", 0);
+
+ for ( ; wants ; wants = wants->next) {
+ const struct object_id *remote = &wants->old_oid;
+ struct object *o;
+
+ /*
+ * If that object is complete (i.e. it is an ancestor of a
+ * local ref), we tell them we have it but do not have to
+ * tell them about its ancestors, which they already know
+ * about.
+ *
+ * We use lookup_object here because we are only
+ * interested in the case we *know* the object is
+ * reachable and we have already scanned it.
+ *
+ * Do this only if args->no_dependents is false (if it is true,
+ * we cannot trust the object flags).
+ */
+ if (!no_dependents &&
+ ((o = lookup_object(the_repository, remote)) != NULL) &&
+ (o->flags & COMPLETE)) {
+ continue;
+ }
+
+ if (!use_ref_in_want || wants->exact_oid)
+ packet_buf_write(req_buf, "want %s\n", oid_to_hex(remote));
+ else
+ packet_buf_write(req_buf, "want-ref %s\n", wants->name);
+ }
+}
+
+static void add_common(struct strbuf *req_buf, struct oidset *common)
+{
+ struct oidset_iter iter;
+ const struct object_id *oid;
+ oidset_iter_init(common, &iter);
+
+ while ((oid = oidset_iter_next(&iter))) {
+ packet_buf_write(req_buf, "have %s\n", oid_to_hex(oid));
+ }
+}
+
+static int add_haves(struct fetch_negotiator *negotiator,
+ struct strbuf *req_buf,
+ int *haves_to_send, int *in_vain)
+{
+ int ret = 0;
+ int haves_added = 0;
+ const struct object_id *oid;
+
+ while ((oid = negotiator->next(negotiator))) {
+ packet_buf_write(req_buf, "have %s\n", oid_to_hex(oid));
+ if (++haves_added >= *haves_to_send)
+ break;
+ }
+
+ *in_vain += haves_added;
+ if (!haves_added || *in_vain >= MAX_IN_VAIN) {
+ /* Send Done */
+ packet_buf_write(req_buf, "done\n");
+ ret = 1;
+ }
+
+ /* Increase haves to send on next round */
+ *haves_to_send = next_flush(1, *haves_to_send);
+
+ return ret;
+}
+
+static int send_fetch_request(struct fetch_negotiator *negotiator, int fd_out,
+ struct fetch_pack_args *args,
+ const struct ref *wants, struct oidset *common,
+ int *haves_to_send, int *in_vain,
+ int sideband_all)
+{
+ int ret = 0;
+ struct strbuf req_buf = STRBUF_INIT;
+
+ if (server_supports_v2("fetch", 1))
+ packet_buf_write(&req_buf, "command=fetch");
+ if (server_supports_v2("agent", 0))
+ packet_buf_write(&req_buf, "agent=%s", git_user_agent_sanitized());
+ if (args->server_options && args->server_options->nr &&
+ server_supports_v2("server-option", 1)) {
+ int i;
+ for (i = 0; i < args->server_options->nr; i++)
+ packet_buf_write(&req_buf, "server-option=%s",
+ args->server_options->items[i].string);
+ }
+
+ packet_buf_delim(&req_buf);
+ if (args->use_thin_pack)
+ packet_buf_write(&req_buf, "thin-pack");
+ if (args->no_progress)
+ packet_buf_write(&req_buf, "no-progress");
+ if (args->include_tag)
+ packet_buf_write(&req_buf, "include-tag");
+ if (prefer_ofs_delta)
+ packet_buf_write(&req_buf, "ofs-delta");
+ if (sideband_all)
+ packet_buf_write(&req_buf, "sideband-all");
+
+ /* Add shallow-info and deepen request */
+ if (server_supports_feature("fetch", "shallow", 0))
+ add_shallow_requests(&req_buf, args);
+ else if (is_repository_shallow(the_repository) || args->deepen)
+ die(_("Server does not support shallow requests"));
+
+ /* Add filter */
+ if (server_supports_feature("fetch", "filter", 0) &&
+ args->filter_options.choice) {
+ const char *spec =
+ expand_list_objects_filter_spec(&args->filter_options);
+ print_verbose(args, _("Server supports filter"));
+ packet_buf_write(&req_buf, "filter %s", spec);
+ } else if (args->filter_options.choice) {
+ warning("filtering not recognized by server, ignoring");
+ }
+
+ /* add wants */
+ add_wants(args->no_dependents, wants, &req_buf);
+
+ if (args->no_dependents) {
+ packet_buf_write(&req_buf, "done");
+ ret = 1;
+ } else {
+ /* Add all of the common commits we've found in previous rounds */
+ add_common(&req_buf, common);
+
+ /* Add initial haves */
+ ret = add_haves(negotiator, &req_buf, haves_to_send, in_vain);
+ }
+
+ /* Send request */
+ packet_buf_flush(&req_buf);
+ if (write_in_full(fd_out, req_buf.buf, req_buf.len) < 0)
+ die_errno(_("unable to write request to remote"));
+
+ strbuf_release(&req_buf);
+ return ret;
+}
+
+/*
+ * Processes a section header in a server's response and checks if it matches
+ * `section`. If the value of `peek` is 1, the header line will be peeked (and
+ * not consumed); if 0, the line will be consumed and the function will die if
+ * the section header doesn't match what was expected.
+ */
+static int process_section_header(struct packet_reader *reader,
+ const char *section, int peek)
+{
+ int ret;
+
+ if (packet_reader_peek(reader) != PACKET_READ_NORMAL)
+ die(_("error reading section header '%s'"), section);
+
+ ret = !strcmp(reader->line, section);
+
+ if (!peek) {
+ if (!ret)
+ die(_("expected '%s', received '%s'"),
+ section, reader->line);
+ packet_reader_read(reader);
+ }
+
+ return ret;
+}
+
+static int process_acks(struct fetch_negotiator *negotiator,
+ struct packet_reader *reader,
+ struct oidset *common)
+{
+ /* received */
+ int received_ready = 0;
+ int received_ack = 0;
+
+ process_section_header(reader, "acknowledgments", 0);
+ while (packet_reader_read(reader) == PACKET_READ_NORMAL) {
+ const char *arg;
+
+ if (!strcmp(reader->line, "NAK"))
+ continue;
+
+ if (skip_prefix(reader->line, "ACK ", &arg)) {
+ struct object_id oid;
+ if (!get_oid_hex(arg, &oid)) {
+ struct commit *commit;
+ oidset_insert(common, &oid);
+ commit = lookup_commit(the_repository, &oid);
+ if (negotiator)
+ negotiator->ack(negotiator, commit);
+ }
+ continue;
+ }
+
+ if (!strcmp(reader->line, "ready")) {
+ received_ready = 1;
+ continue;
+ }
+
+ die(_("unexpected acknowledgment line: '%s'"), reader->line);
+ }
+
+ if (reader->status != PACKET_READ_FLUSH &&
+ reader->status != PACKET_READ_DELIM)
+ die(_("error processing acks: %d"), reader->status);
+
+ /*
+ * If an "acknowledgments" section is sent, a packfile is sent if and
+ * only if "ready" was sent in this section. The other sections
+ * ("shallow-info" and "wanted-refs") are sent only if a packfile is
+ * sent. Therefore, a DELIM is expected if "ready" is sent, and a FLUSH
+ * otherwise.
+ */
+ if (received_ready && reader->status != PACKET_READ_DELIM)
+ die(_("expected packfile to be sent after 'ready'"));
+ if (!received_ready && reader->status != PACKET_READ_FLUSH)
+ die(_("expected no other sections to be sent after no 'ready'"));
+
+ /* return 0 if no common, 1 if there are common, or 2 if ready */
+ return received_ready ? 2 : (received_ack ? 1 : 0);
+}
+
+static void receive_shallow_info(struct fetch_pack_args *args,
+ struct packet_reader *reader,
+ struct oid_array *shallows,
+ struct shallow_info *si)
+{
+ int unshallow_received = 0;
+
+ process_section_header(reader, "shallow-info", 0);
+ while (packet_reader_read(reader) == PACKET_READ_NORMAL) {
+ const char *arg;
+ struct object_id oid;
+
+ if (skip_prefix(reader->line, "shallow ", &arg)) {
+ if (get_oid_hex(arg, &oid))
+ die(_("invalid shallow line: %s"), reader->line);
+ oid_array_append(shallows, &oid);
+ continue;
+ }
+ if (skip_prefix(reader->line, "unshallow ", &arg)) {
+ if (get_oid_hex(arg, &oid))
+ die(_("invalid unshallow line: %s"), reader->line);
+ if (!lookup_object(the_repository, &oid))
+ die(_("object not found: %s"), reader->line);
+ /* make sure that it is parsed as shallow */
+ if (!parse_object(the_repository, &oid))
+ die(_("error in object: %s"), reader->line);
+ if (unregister_shallow(&oid))
+ die(_("no shallow found: %s"), reader->line);
+ unshallow_received = 1;
+ continue;
+ }
+ die(_("expected shallow/unshallow, got %s"), reader->line);
+ }
+
+ if (reader->status != PACKET_READ_FLUSH &&
+ reader->status != PACKET_READ_DELIM)
+ die(_("error processing shallow info: %d"), reader->status);
+
+ if (args->deepen || unshallow_received) {
+ /*
+ * Treat these as shallow lines caused by our depth settings.
+ * In v0, these lines cannot cause refs to be rejected; do the
+ * same.
+ */
+ int i;
+
+ for (i = 0; i < shallows->nr; i++)
+ register_shallow(the_repository, &shallows->oid[i]);
+ setup_alternate_shallow(&shallow_lock, &alternate_shallow_file,
+ NULL);
+ args->deepen = 1;
+ } else if (shallows->nr) {
+ /*
+ * Treat these as shallow lines caused by the remote being
+ * shallow. In v0, remote refs that reach these objects are
+ * rejected (unless --update-shallow is set); do the same.
+ */
+ prepare_shallow_info(si, shallows);
+ if (si->nr_ours || si->nr_theirs)
+ alternate_shallow_file =
+ setup_temporary_shallow(si->shallow);
+ else
+ alternate_shallow_file = NULL;
+ } else {
+ alternate_shallow_file = NULL;
+ }
+}
+
+static int cmp_name_ref(const void *name, const void *ref)
+{
+ return strcmp(name, (*(struct ref **)ref)->name);
+}
+
+static void receive_wanted_refs(struct packet_reader *reader,
+ struct ref **sought, int nr_sought)
+{
+ process_section_header(reader, "wanted-refs", 0);
+ while (packet_reader_read(reader) == PACKET_READ_NORMAL) {
+ struct object_id oid;
+ const char *end;
+ struct ref **found;
+
+ if (parse_oid_hex(reader->line, &oid, &end) || *end++ != ' ')
+ die(_("expected wanted-ref, got '%s'"), reader->line);
+
+ found = bsearch(end, sought, nr_sought, sizeof(*sought),
+ cmp_name_ref);
+ if (!found)
+ die(_("unexpected wanted-ref: '%s'"), reader->line);
+ oidcpy(&(*found)->old_oid, &oid);
+ }
+
+ if (reader->status != PACKET_READ_DELIM)
+ die(_("error processing wanted refs: %d"), reader->status);
+}
+
+enum fetch_state {
+ FETCH_CHECK_LOCAL = 0,
+ FETCH_SEND_REQUEST,
+ FETCH_PROCESS_ACKS,
+ FETCH_GET_PACK,
+ FETCH_DONE,
+};
+
+static struct ref *do_fetch_pack_v2(struct fetch_pack_args *args,
+ int fd[2],
+ const struct ref *orig_ref,
+ struct ref **sought, int nr_sought,
+ struct oid_array *shallows,
+ struct shallow_info *si,
+ char **pack_lockfile)
+{
+ struct repository *r = the_repository;
+ struct ref *ref = copy_ref_list(orig_ref);
+ enum fetch_state state = FETCH_CHECK_LOCAL;
+ struct oidset common = OIDSET_INIT;
+ struct packet_reader reader;
+ int in_vain = 0, negotiation_started = 0;
+ int haves_to_send = INITIAL_FLUSH;
+ struct fetch_negotiator negotiator_alloc;
+ struct fetch_negotiator *negotiator;
+
+ if (args->no_dependents) {
+ negotiator = NULL;
+ } else {
+ negotiator = &negotiator_alloc;
+ fetch_negotiator_init(r, negotiator);
+ }
+
+ packet_reader_init(&reader, fd[0], NULL, 0,
+ PACKET_READ_CHOMP_NEWLINE |
+ PACKET_READ_DIE_ON_ERR_PACKET);
+ if (git_env_bool("GIT_TEST_SIDEBAND_ALL", 1) &&
+ server_supports_feature("fetch", "sideband-all", 0)) {
+ reader.use_sideband = 1;
+ reader.me = "fetch-pack";
+ }
+
+ while (state != FETCH_DONE) {
+ switch (state) {
+ case FETCH_CHECK_LOCAL:
+ sort_ref_list(&ref, ref_compare_name);
+ QSORT(sought, nr_sought, cmp_ref_by_name);
+
+ /* v2 supports these by default */
+ allow_unadvertised_object_request |= ALLOW_REACHABLE_SHA1;
+ use_sideband = 2;
+ if (args->depth > 0 || args->deepen_since || args->deepen_not)
+ args->deepen = 1;
+
+ /* Filter 'ref' by 'sought' and those that aren't local */
+ if (!args->no_dependents) {
+ mark_complete_and_common_ref(negotiator, args, &ref);
+ filter_refs(args, &ref, sought, nr_sought);
+ if (everything_local(args, &ref))
+ state = FETCH_DONE;
+ else
+ state = FETCH_SEND_REQUEST;
+
+ mark_tips(negotiator, args->negotiation_tips);
+ for_each_cached_alternate(negotiator,
+ insert_one_alternate_object);
+ } else {
+ filter_refs(args, &ref, sought, nr_sought);
+ state = FETCH_SEND_REQUEST;
+ }
+ break;
+ case FETCH_SEND_REQUEST:
+ if (!negotiation_started) {
+ negotiation_started = 1;
+ trace2_region_enter("fetch-pack",
+ "negotiation_v2",
+ the_repository);
+ }
+ if (send_fetch_request(negotiator, fd[1], args, ref,
+ &common,
+ &haves_to_send, &in_vain,
+ reader.use_sideband))
+ state = FETCH_GET_PACK;
+ else
+ state = FETCH_PROCESS_ACKS;
+ break;
+ case FETCH_PROCESS_ACKS:
+ /* Process ACKs/NAKs */
+ switch (process_acks(negotiator, &reader, &common)) {
+ case 2:
+ state = FETCH_GET_PACK;
+ break;
+ case 1:
+ in_vain = 0;
+ /* fallthrough */
+ default:
+ state = FETCH_SEND_REQUEST;
+ break;
+ }
+ break;
+ case FETCH_GET_PACK:
+ trace2_region_leave("fetch-pack",
+ "negotiation_v2",
+ the_repository);
+ /* Check for shallow-info section */
+ if (process_section_header(&reader, "shallow-info", 1))
+ receive_shallow_info(args, &reader, shallows, si);
+
+ if (process_section_header(&reader, "wanted-refs", 1))
+ receive_wanted_refs(&reader, sought, nr_sought);
+
+ /* get the pack */
+ process_section_header(&reader, "packfile", 0);
+ if (get_pack(args, fd, pack_lockfile, sought, nr_sought))
+ die(_("git fetch-pack: fetch failed."));
+
+ state = FETCH_DONE;
+ break;
+ case FETCH_DONE:
+ continue;
+ }
+ }
+
+ if (negotiator)
+ negotiator->release(negotiator);
+ oidset_clear(&common);
+ return ref;
+}
+
+static int fetch_pack_config_cb(const char *var, const char *value, void *cb)
+{
+ if (strcmp(var, "fetch.fsck.skiplist") == 0) {
+ const char *path;
+
+ if (git_config_pathname(&path, var, value))
+ return 1;
+ strbuf_addf(&fsck_msg_types, "%cskiplist=%s",
+ fsck_msg_types.len ? ',' : '=', path);
+ free((char *)path);
+ return 0;
+ }
+
+ if (skip_prefix(var, "fetch.fsck.", &var)) {
+ if (is_valid_msg_type(var, value))
+ strbuf_addf(&fsck_msg_types, "%c%s=%s",
+ fsck_msg_types.len ? ',' : '=', var, value);
+ else
+ warning("Skipping unknown msg id '%s'", var);
+ return 0;
+ }
+
+ return git_default_config(var, value, cb);
+}
+
static void fetch_pack_config(void)
{
git_config_get_int("fetch.unpacklimit", &fetch_unpack_limit);
git_config_get_bool("fetch.fsckobjects", &fetch_fsck_objects);
git_config_get_bool("transfer.fsckobjects", &transfer_fsck_objects);
- git_config(git_default_config, NULL);
+ git_config(fetch_pack_config_cb, NULL);
}
static void fetch_pack_setup(void)
if (args->deepen && alternate_shallow_file) {
if (*alternate_shallow_file == '\0') { /* --unshallow */
- unlink_or_warn(git_path_shallow());
+ unlink_or_warn(git_path_shallow(the_repository));
rollback_lock_file(&shallow_lock);
} else
commit_lock_file(&shallow_lock);
+ alternate_shallow_file = NULL;
return;
}
&alternate_shallow_file,
&extra);
commit_lock_file(&shallow_lock);
+ alternate_shallow_file = NULL;
}
oid_array_clear(&extra);
return;
commit_lock_file(&shallow_lock);
oid_array_clear(&extra);
oid_array_clear(&ref);
+ alternate_shallow_file = NULL;
return;
}
oid_array_clear(&ref);
}
+static int iterate_ref_map(void *cb_data, struct object_id *oid)
+{
+ struct ref **rm = cb_data;
+ struct ref *ref = *rm;
+
+ if (!ref)
+ return -1; /* end of the list */
+ *rm = ref->next;
+ oidcpy(oid, &ref->old_oid);
+ return 0;
+}
+
struct ref *fetch_pack(struct fetch_pack_args *args,
- int fd[], struct child_process *conn,
+ int fd[],
const struct ref *ref,
- const char *dest,
struct ref **sought, int nr_sought,
struct oid_array *shallow,
- char **pack_lockfile)
+ char **pack_lockfile,
+ enum protocol_version version)
{
struct ref *ref_cpy;
struct shallow_info si;
+ struct oid_array shallows_scratch = OID_ARRAY_INIT;
fetch_pack_setup();
if (nr_sought)
nr_sought = remove_duplicates_in_refs(sought, nr_sought);
- if (!ref) {
+ if (args->no_dependents && !args->filter_options.choice) {
+ /*
+ * The protocol does not support requesting that only the
+ * wanted objects be sent, so approximate this by setting a
+ * "blob:none" filter if no filter is already set. This works
+ * for all object types: note that wanted blobs will still be
+ * sent because they are directly specified as a "want".
+ *
+ * NEEDSWORK: Add an option in the protocol to request that
+ * only the wanted objects be sent, and implement it.
+ */
+ parse_list_objects_filter(&args->filter_options, "blob:none");
+ }
+
+ if (version != protocol_v2 && !ref) {
packet_flush(fd[1]);
die(_("no matching remote head"));
}
- prepare_shallow_info(&si, shallow);
- ref_cpy = do_fetch_pack(args, fd, ref, sought, nr_sought,
- &si, pack_lockfile);
- reprepare_packed_git();
+ if (version == protocol_v2) {
+ if (shallow->nr)
+ BUG("Protocol V2 does not provide shallows at this point in the fetch");
+ memset(&si, 0, sizeof(si));
+ ref_cpy = do_fetch_pack_v2(args, fd, ref, sought, nr_sought,
+ &shallows_scratch, &si,
+ pack_lockfile);
+ } else {
+ prepare_shallow_info(&si, shallow);
+ ref_cpy = do_fetch_pack(args, fd, ref, sought, nr_sought,
+ &si, pack_lockfile);
+ }
+ reprepare_packed_git(the_repository);
+
+ if (!args->cloning && args->deepen) {
+ struct check_connected_options opt = CHECK_CONNECTED_INIT;
+ struct ref *iterator = ref_cpy;
+ opt.shallow_file = alternate_shallow_file;
+ if (args->deepen)
+ opt.is_deepening_fetch = 1;
+ if (check_connected(iterate_ref_map, &iterator, &opt)) {
+ error(_("remote did not send all necessary objects"));
+ free_refs(ref_cpy);
+ ref_cpy = NULL;
+ rollback_lock_file(&shallow_lock);
+ goto cleanup;
+ }
+ args->connectivity_checked = 1;
+ }
+
update_shallow(args, sought, nr_sought, &si);
+cleanup:
clear_shallow_info(&si);
+ oid_array_clear(&shallows_scratch);
return ref_cpy;
}
projects / thirdparty / git.git / blobdiff