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-rw-r--r--fetch-pack.c1226
1 files changed, 911 insertions, 315 deletions
diff --git a/fetch-pack.c b/fetch-pack.c
index b501d5c320..75047a4b2a 100644
--- a/fetch-pack.c
+++ b/fetch-pack.c
@@ -1,10 +1,12 @@
#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"
@@ -13,28 +15,33 @@
#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 unpack_limit = 100;
static int prefer_ofs_delta = 1;
static int no_done;
+static int deepen_since_ok;
+static int deepen_not_ok;
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 char *negotiation_algorithm;
+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)
-
-static int marked;
+#define ALTERNATE (1U << 1)
/*
* After sending this many "have"s if we do not get any new ACK , we
@@ -42,134 +49,83 @@ static int marked;
*/
#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). */
#define ALLOW_REACHABLE_SHA1 02
static unsigned int allow_unadvertised_object_request;
-static void rev_list_push(struct commit *commit, int mark)
+__attribute__((format (printf, 2, 3)))
+static inline void print_verbose(const struct fetch_pack_args *args,
+ const char *fmt, ...)
{
- if (!(commit->object.flags & mark)) {
- commit->object.flags |= mark;
-
- if (parse_commit(commit))
- return;
+ va_list params;
- prio_queue_put(&rev_list, commit);
+ if (!args->verbose)
+ return;
- if (!(commit->object.flags & COMMON))
- non_common_revs++;
- }
+ va_start(params, fmt);
+ vfprintf(stderr, fmt, params);
+ va_end(params);
+ fputc('\n', stderr);
}
-static int rev_list_insert_ref(const char *refname, const unsigned char *sha1)
+struct alternate_object_cache {
+ struct object **items;
+ size_t nr, alloc;
+};
+
+static void cache_one_alternate(const char *refname,
+ const struct object_id *oid,
+ void *vcache)
{
- struct object *o = deref_tag(parse_object(sha1), refname, 0);
+ struct alternate_object_cache *cache = vcache;
+ struct object *obj = parse_object(the_repository, oid);
- if (o && o->type == OBJ_COMMIT)
- rev_list_push((struct commit *)o, SEEN);
+ if (!obj || (obj->flags & ALTERNATE))
+ return;
- return 0;
+ obj->flags |= ALTERNATE;
+ ALLOC_GROW(cache->items, cache->nr + 1, cache->alloc);
+ cache->items[cache->nr++] = obj;
}
-static int rev_list_insert_ref_oid(const char *refname, const struct object_id *oid,
- int flag, void *cb_data)
+static void for_each_cached_alternate(struct fetch_negotiator *negotiator,
+ void (*cb)(struct fetch_negotiator *,
+ struct object *))
{
- return rev_list_insert_ref(refname, oid->hash);
-}
+ static int initialized;
+ static struct alternate_object_cache cache;
+ size_t i;
-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->hash), refname, 0);
+ if (!initialized) {
+ for_each_alternate_ref(cache_one_alternate, &cache);
+ initialized = 1;
+ }
- if (o && o->type == OBJ_COMMIT)
- clear_commit_marks((struct commit *)o,
- COMMON | COMMON_REF | SEEN | POPPED);
- return 0;
+ for (i = 0; i < cache.nr; i++)
+ cb(negotiator, cache.items[i]);
}
-/*
- 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)
+static int rev_list_insert_ref(struct fetch_negotiator *negotiator,
+ const char *refname,
+ const struct object_id *oid)
{
- if (commit != NULL && !(commit->object.flags & COMMON)) {
- struct object *o = (struct object *)commit;
+ struct object *o = deref_tag(the_repository,
+ parse_object(the_repository, oid),
+ refname, 0);
- if (!ancestors_only)
- o->flags |= COMMON;
+ if (o && o->type == OBJ_COMMIT)
+ negotiator->add_tip(negotiator, (struct commit *)o);
- 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);
- }
- }
+ return 0;
}
-/*
- Get the next rev to send, ignoring the common.
-*/
-
-static const unsigned char *get_rev(void)
+static int rev_list_insert_ref_oid(const char *refname, const struct object_id *oid,
+ int flag, void *cb_data)
{
- 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.hash;
+ return rev_list_insert_ref(cb_data, refname, oid);
}
enum ack_type {
@@ -182,7 +138,7 @@ enum ack_type {
static void consume_shallow_list(struct fetch_pack_args *args, int fd)
{
- if (args->stateless_rpc && args->depth > 0) {
+ 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.
@@ -193,23 +149,23 @@ static void consume_shallow_list(struct fetch_pack_args *args, int fd)
continue;
if (starts_with(line, "unshallow "))
continue;
- die("git fetch-pack: expected shallow list");
+ die(_("git fetch-pack: expected shallow list"));
}
}
}
-static enum ack_type get_ack(int fd, unsigned char *result_sha1)
+static enum ack_type get_ack(int fd, 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 (!line)
+ die(_("git fetch-pack: expected ACK/NAK, got a flush packet"));
if (!strcmp(line, "NAK"))
return NAK;
if (skip_prefix(line, "ACK ", &arg)) {
- if (!get_sha1_hex(arg, result_sha1)) {
+ if (!get_oid_hex(arg, result_oid)) {
arg += 40;
len -= arg - line;
if (len < 1)
@@ -223,7 +179,9 @@ static enum ack_type get_ack(int fd, unsigned char *result_sha1)
return ACK;
}
}
- die("git fetch_pack: expected ACK/NAK, got '%s'", line);
+ if (skip_prefix(line, "ERR ", &arg))
+ die(_("remote error: %s"), arg);
+ die(_("git fetch-pack: expected ACK/NAK, got '%s'"), line);
}
static void send_request(struct fetch_pack_args *args,
@@ -236,33 +194,56 @@ static void send_request(struct fetch_pack_args *args,
write_or_die(fd, buf->buf, buf->len);
}
-static void insert_one_alternate_ref(const struct ref *ref, void *unused)
+static void insert_one_alternate_object(struct fetch_negotiator *negotiator,
+ struct object *obj)
{
- rev_list_insert_ref(NULL, ref->old_oid.hash);
+ rev_list_insert_ref(negotiator, NULL, &obj->oid);
}
#define INITIAL_FLUSH 16
#define PIPESAFE_FLUSH 32
-#define LARGE_FLUSH 1024
+#define LARGE_FLUSH 16384
-static int next_flush(struct fetch_pack_args *args, int count)
+static int next_flush(int stateless_rpc, int count)
{
- int flush_limit = args->stateless_rpc ? LARGE_FLUSH : PIPESAFE_FLUSH;
-
- if (count < flush_limit)
- count <<= 1;
- else
- count += flush_limit;
+ if (stateless_rpc) {
+ if (count < LARGE_FLUSH)
+ count <<= 1;
+ else
+ count = count * 11 / 10;
+ } else {
+ if (count < PIPESAFE_FLUSH)
+ count <<= 1;
+ else
+ count += PIPESAFE_FLUSH;
+ }
return count;
}
-static int find_common(struct fetch_pack_args *args,
- int fd[2], unsigned char *result_sha1,
+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 fetching;
int count = 0, flushes = 0, flush_at = INITIAL_FLUSH, retval;
- const unsigned char *sha1;
+ const struct object_id *oid;
unsigned in_vain = 0;
int got_continue = 0;
int got_ready = 0;
@@ -270,17 +251,14 @@ static int find_common(struct fetch_pack_args *args,
size_t state_len = 0;
if (args->stateless_rpc && multi_ack == 1)
- die("--stateless-rpc requires multi_ack_detailed");
- if (marked)
- for_each_ref(clear_marks, NULL);
- marked = 1;
+ die(_("--stateless-rpc requires multi_ack_detailed"));
- for_each_ref(rev_list_insert_ref_oid, NULL);
- for_each_alternate_ref(insert_one_alternate_ref, NULL);
+ mark_tips(negotiator, args->negotiation_tips);
+ for_each_cached_alternate(negotiator, insert_one_alternate_object);
fetching = 0;
for ( ; refs ; refs = refs->next) {
- unsigned char *remote = refs->old_oid.hash;
+ struct object_id *remote = &refs->old_oid;
const char *remote_hex;
struct object *o;
@@ -294,12 +272,12 @@ static int find_common(struct fetch_pack_args *args,
* interested in the case we *know* the object is
* reachable and we have already scanned it.
*/
- if (((o = lookup_object(remote)) != NULL) &&
+ if (((o = lookup_object(the_repository, remote->hash)) != NULL) &&
(o->flags & COMPLETE)) {
continue;
}
- remote_hex = sha1_to_hex(remote);
+ remote_hex = oid_to_hex(remote);
if (!fetching) {
struct strbuf c = STRBUF_INIT;
if (multi_ack == 2) strbuf_addstr(&c, " multi_ack_detailed");
@@ -307,12 +285,17 @@ static int find_common(struct fetch_pack_args *args,
if (no_done) strbuf_addstr(&c, " no-done");
if (use_sideband == 2) strbuf_addstr(&c, " side-band-64k");
if (use_sideband == 1) strbuf_addstr(&c, " side-band");
+ if (args->deepen_relative) strbuf_addstr(&c, " deepen-relative");
if (args->use_thin_pack) strbuf_addstr(&c, " thin-pack");
if (args->no_progress) strbuf_addstr(&c, " no-progress");
if (args->include_tag) strbuf_addstr(&c, " include-tag");
if (prefer_ofs_delta) strbuf_addstr(&c, " ofs-delta");
+ if (deepen_since_ok) strbuf_addstr(&c, " deepen-since");
+ 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
@@ -326,39 +309,53 @@ static int find_common(struct fetch_pack_args *args,
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);
+ 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 (server_supports_filtering && args->filter_options.choice)
+ packet_buf_write(&req_buf, "filter %s",
+ args->filter_options.filter_spec);
packet_buf_flush(&req_buf);
state_len = req_buf.len;
- if (args->depth > 0) {
+ if (args->deepen) {
char *line;
const char *arg;
- unsigned char sha1[20];
+ 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)) {
- if (get_sha1_hex(arg, sha1))
- die("invalid shallow line: %s", line);
- register_shallow(sha1);
+ if (get_oid_hex(arg, &oid))
+ die(_("invalid shallow line: %s"), line);
+ register_shallow(the_repository, &oid);
continue;
}
if (skip_prefix(line, "unshallow ", &arg)) {
- if (get_sha1_hex(arg, sha1))
- die("invalid unshallow line: %s", line);
- if (!lookup_object(sha1))
- die("object not found: %s", line);
+ if (get_oid_hex(arg, &oid))
+ die(_("invalid unshallow line: %s"), line);
+ if (!lookup_object(the_repository, oid.hash))
+ die(_("object not found: %s"), line);
/* make sure that it is parsed as shallow */
- if (!parse_object(sha1))
- die("error in object: %s", line);
- if (unregister_shallow(sha1))
- die("no shallow found: %s", line);
+ if (!parse_object(the_repository, &oid))
+ die(_("error in object: %s"), line);
+ if (unregister_shallow(&oid))
+ die(_("no shallow found: %s"), line);
continue;
}
- die("expected shallow/unshallow, got %s", line);
+ die(_("expected shallow/unshallow, got %s"), line);
}
} else if (!args->stateless_rpc)
send_request(args, fd[1], &req_buf);
@@ -373,10 +370,11 @@ static int find_common(struct fetch_pack_args *args,
flushes = 0;
retval = -1;
- while ((sha1 = get_rev())) {
- packet_buf_write(&req_buf, "have %s\n", sha1_to_hex(sha1));
- if (args->verbose)
- fprintf(stderr, "have %s\n", sha1_to_hex(sha1));
+ 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++;
if (flush_at <= ++count) {
int ack;
@@ -385,7 +383,7 @@ static int find_common(struct fetch_pack_args *args,
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
@@ -396,10 +394,10 @@ static int find_common(struct fetch_pack_args *args,
consume_shallow_list(args, fd[0]);
do {
- ack = get_ack(fd[0], result_sha1);
- if (args->verbose && ack)
- fprintf(stderr, "got ack %d %s\n", ack,
- sha1_to_hex(result_sha1));
+ ack = get_ack(fd[0], result_oid);
+ if (ack)
+ print_verbose(args, _("got %s %d %s"), "ack",
+ ack, oid_to_hex(result_oid));
switch (ack) {
case ACK:
flushes = 0;
@@ -410,38 +408,47 @@ static int find_common(struct fetch_pack_args *args,
case ACK_ready:
case ACK_continue: {
struct commit *commit =
- lookup_commit(result_sha1);
+ lookup_commit(the_repository,
+ result_oid);
+ int was_common;
+
if (!commit)
- die("invalid commit %s", sha1_to_hex(result_sha1));
+ 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.
*/
- const char *hex = sha1_to_hex(result_sha1);
+ const char *hex = oid_to_hex(result_oid);
packet_buf_write(&req_buf, "have %s\n", hex);
state_len = req_buf.len;
- }
- mark_common(commit, 0, 1);
+ /*
+ * Reset in_vain because an ack
+ * for this commit has not been
+ * seen.
+ */
+ in_vain = 0;
+ } else if (!args->stateless_rpc
+ || ack != ACK_common)
+ in_vain = 0;
retval = 0;
- in_vain = 0;
got_continue = 1;
- if (ack == ACK_ready) {
- clear_prio_queue(&rev_list);
+ if (ack == ACK_ready)
got_ready = 1;
- }
break;
}
}
} while (ack);
flushes--;
if (got_continue && MAX_IN_VAIN < in_vain) {
- if (args->verbose)
- fprintf(stderr, "giving up\n");
+ print_verbose(args, _("giving up"));
break; /* give up */
}
+ if (got_ready)
+ break;
}
}
done:
@@ -449,8 +456,7 @@ done:
packet_buf_write(&req_buf, "done\n");
send_request(args, fd[1], &req_buf);
}
- if (args->verbose)
- fprintf(stderr, "done\n");
+ print_verbose(args, _("done"));
if (retval != 0) {
multi_ack = 0;
flushes++;
@@ -460,11 +466,10 @@ done:
if (!got_ready || !no_done)
consume_shallow_list(args, fd[0]);
while (flushes || multi_ack) {
- int ack = get_ack(fd[0], result_sha1);
+ int ack = get_ack(fd[0], result_oid);
if (ack) {
- if (args->verbose)
- fprintf(stderr, "got ack (%d) %s\n", ack,
- sha1_to_hex(result_sha1));
+ print_verbose(args, _("got %s (%d) %s"), "ack",
+ ack, oid_to_hex(result_oid));
if (ack == ACK)
return 0;
multi_ack = 1;
@@ -478,16 +483,16 @@ done:
static struct commit_list *complete;
-static int mark_complete(const unsigned char *sha1)
+static int mark_complete(const struct object_id *oid)
{
- struct object *o = parse_object(sha1);
+ 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.hash);
+ o = parse_object(the_repository, &t->tagged->oid);
}
if (o && o->type == OBJ_COMMIT) {
struct commit *commit = (struct commit *)o;
@@ -502,27 +507,51 @@ static int mark_complete(const unsigned char *sha1)
static int mark_complete_oid(const char *refname, const struct object_id *oid,
int flag, void *cb_data)
{
- return mark_complete(oid->hash);
+ return mark_complete(oid);
}
static void mark_recent_complete_commits(struct fetch_pack_args *args,
- unsigned long cutoff)
+ timestamp_t cutoff)
{
while (complete && cutoff <= complete->item->date) {
- if (args->verbose)
- fprintf(stderr, "Marking %s as complete\n",
- oid_to_hex(&complete->item->object.oid));
+ print_verbose(args, _("Marking %s as complete"),
+ oid_to_hex(&complete->item->object.oid));
pop_most_recent_commit(&complete, COMPLETE);
}
}
+static void add_refs_to_oidset(struct oidset *oids, struct ref *refs)
+{
+ for (; refs; refs = refs->next)
+ 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)
+{
+ /*
+ * 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);
+}
+
static void filter_refs(struct fetch_pack_args *args,
struct ref **refs,
struct ref **sought, int nr_sought)
{
struct ref *newlist = NULL;
struct ref **newtail = &newlist;
+ struct ref *unmatched = NULL;
struct ref *ref, *next;
+ struct oidset tip_oids = OIDSET_INIT;
int i;
i = 0;
@@ -540,69 +569,131 @@ static void filter_refs(struct fetch_pack_args *args,
break; /* definitely do not have it */
else if (cmp == 0) {
keep = 1; /* definitely have it */
- sought[i]->matched = 1;
+ sought[i]->match_status = REF_MATCHED;
}
i++;
}
- }
- if (!keep && args->fetch_all &&
- (!args->depth || !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;
ref->next = NULL;
newtail = &ref->next;
} else {
- free(ref);
+ ref->next = unmatched;
+ unmatched = ref;
}
}
/* Append unmatched requests to the list */
- if ((allow_unadvertised_object_request &
- (ALLOW_TIP_SHA1 | ALLOW_REACHABLE_SHA1))) {
- for (i = 0; i < nr_sought; i++) {
- unsigned char sha1[20];
+ for (i = 0; i < nr_sought; i++) {
+ struct object_id oid;
+ const char *p;
- ref = sought[i];
- if (ref->matched)
- continue;
- if (get_sha1_hex(ref->name, sha1) ||
- ref->name[40] != '\0' ||
- hashcmp(sha1, ref->old_oid.hash))
- continue;
+ ref = sought[i];
+ if (ref->match_status != REF_NOT_MATCHED)
+ continue;
+ if (parse_oid_hex(ref->name, &oid, &p) ||
+ *p != '\0' ||
+ !oideq(&oid, &ref->old_oid))
+ continue;
- ref->matched = 1;
+ if ((allow_unadvertised_object_request &
+ (ALLOW_TIP_SHA1 | ALLOW_REACHABLE_SHA1)) ||
+ tip_oids_contain(&tip_oids, unmatched, newlist,
+ &ref->old_oid)) {
+ ref->match_status = REF_MATCHED;
*newtail = copy_ref(ref);
newtail = &(*newtail)->next;
+ } else {
+ ref->match_status = REF_UNADVERTISED_NOT_ALLOWED;
}
}
+
+ oidset_clear(&tip_oids);
+ for (ref = unmatched; ref; ref = next) {
+ next = ref->next;
+ free(ref);
+ }
+
*refs = newlist;
}
-static void mark_alternate_complete(const struct ref *ref, void *unused)
+static void mark_alternate_complete(struct fetch_negotiator *unused,
+ struct object *obj)
{
- mark_complete(ref->old_oid.hash);
+ 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;
+};
+
+/*
+ * If the number of refs is not larger than the number of loose objects,
+ * this function stops inserting.
+ */
+static int add_loose_objects_to_set(const struct object_id *oid,
+ const char *path,
+ void *data)
+{
+ struct loose_object_iter *iter = data;
+ oidset_insert(iter->loose_object_set, oid);
+ if (iter->refs == NULL)
+ return 1;
+
+ iter->refs = iter->refs->next;
+ return 0;
+}
+
+/*
+ * 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;
- unsigned long cutoff = 0;
+ int old_save_commit_buffer = save_commit_buffer;
+ timestamp_t cutoff = 0;
+ struct oidset loose_oid_set = OIDSET_INIT;
+ int use_oidset = 0;
+ struct loose_object_iter iter = {&loose_oid_set, *refs};
+
+ /* Enumerate all loose objects or know refs are not so many. */
+ use_oidset = !for_each_loose_object(add_loose_objects_to_set,
+ &iter, 0);
save_commit_buffer = 0;
for (ref = *refs; ref; ref = ref->next) {
struct object *o;
+ unsigned int flags = OBJECT_INFO_QUICK;
- if (!has_object_file(&ref->old_oid))
- continue;
+ if (use_oidset &&
+ !oidset_contains(&loose_oid_set, &ref->old_oid)) {
+ /*
+ * I know this does not exist in the loose form,
+ * so check if it exists in a non-loose form.
+ */
+ flags |= OBJECT_INFO_IGNORE_LOOSE;
+ }
- o = parse_object(ref->old_oid.hash);
+ if (!has_object_file_with_flags(&ref->old_oid, flags))
+ continue;
+ o = parse_object(the_repository, &ref->old_oid);
if (!o)
continue;
@@ -617,54 +708,63 @@ static int everything_local(struct fetch_pack_args *args,
}
}
- if (!args->depth) {
- for_each_ref(mark_complete_oid, NULL);
- for_each_alternate_ref(mark_alternate_complete, NULL);
- commit_list_sort_by_date(&complete);
- if (cutoff)
- mark_recent_complete_commits(args, cutoff);
- }
+ oidset_clear(&loose_oid_set);
- /*
- * Mark all complete remote refs as common refs.
- * Don't mark them common yet; the server has to be told so first.
- */
- for (ref = *refs; ref; ref = ref->next) {
- struct object *o = deref_tag(lookup_object(ref->old_oid.hash),
- NULL, 0);
+ if (!args->no_dependents) {
+ if (!args->deepen) {
+ for_each_ref(mark_complete_oid, NULL);
+ for_each_cached_alternate(NULL, mark_alternate_complete);
+ commit_list_sort_by_date(&complete);
+ if (cutoff)
+ mark_recent_complete_commits(args, cutoff);
+ }
- if (!o || o->type != OBJ_COMMIT || !(o->flags & COMPLETE))
- continue;
+ /*
+ * Mark all complete remote refs as common refs.
+ * Don't mark them common yet; the server has to be told so first.
+ */
+ for (ref = *refs; ref; ref = ref->next) {
+ struct object *o = deref_tag(the_repository,
+ lookup_object(the_repository,
+ ref->old_oid.hash),
+ NULL, 0);
- if (!(o->flags & SEEN)) {
- rev_list_push((struct commit *)o, COMMON_REF | SEEN);
+ if (!o || o->type != OBJ_COMMIT || !(o->flags & COMPLETE))
+ continue;
- mark_common((struct commit *)o, 1, 1);
+ negotiator->known_common(negotiator,
+ (struct commit *)o);
}
}
- 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 unsigned char *remote = ref->old_oid.hash;
+ const struct object_id *remote = &ref->old_oid;
struct object *o;
- o = lookup_object(remote);
+ o = lookup_object(the_repository, remote->hash);
if (!o || !(o->flags & COMPLETE)) {
retval = 0;
- if (!args->verbose)
- continue;
- fprintf(stderr,
- "want %s (%s)\n", sha1_to_hex(remote),
- ref->name);
+ print_verbose(args, "want %s (%s)", oid_to_hex(remote),
+ ref->name);
continue;
}
- if (!args->verbose)
- continue;
- fprintf(stderr,
- "already have %s (%s)\n", sha1_to_hex(remote),
- ref->name);
+ print_verbose(args, _("already have %s (%s)"), oid_to_hex(remote),
+ ref->name);
}
+
return retval;
}
@@ -700,8 +800,7 @@ static int get_pack(struct fetch_pack_args *args,
demux.out = -1;
demux.isolate_sigpipe = 1;
if (start_async(&demux))
- die("fetch-pack: unable to fork off sideband"
- " demultiplexer");
+ die(_("fetch-pack: unable to fork off sideband demultiplexer"));
}
else
demux.out = xd[0];
@@ -709,7 +808,7 @@ static int get_pack(struct fetch_pack_args *args,
if (!args->keep_pack && unpack_limit) {
if (read_pack_header(demux.out, &header))
- die("protocol error: bad pack header");
+ die(_("protocol error: bad pack header"));
pass_header = 1;
if (ntohl(header.hdr_entries) < unpack_limit)
do_keep = 0;
@@ -722,7 +821,7 @@ static int get_pack(struct fetch_pack_args *args,
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";
@@ -732,9 +831,9 @@ static int get_pack(struct fetch_pack_args *args,
argv_array_push(&cmd.args, "-v");
if (args->use_thin_pack)
argv_array_push(&cmd.args, "--fix-thin");
- if (args->lock_pack || unpack_limit) {
- char hostname[256];
- if (gethostname(hostname, sizeof(hostname)))
+ if (do_keep && (args->lock_pack || unpack_limit)) {
+ char hostname[HOST_NAME_MAX + 1];
+ if (xgethostname(hostname, sizeof(hostname)))
xsnprintf(hostname, sizeof(hostname), "localhost");
argv_array_pushf(&cmd.args,
"--keep=fetch-pack %"PRIuMAX " on %s",
@@ -742,6 +841,8 @@ static int get_pack(struct fetch_pack_args *args,
}
if (args->check_self_contained_and_connected)
argv_array_push(&cmd.args, "--check-self-contained-and-connected");
+ if (args->from_promisor)
+ argv_array_push(&cmd.args, "--promisor");
}
else {
cmd_name = "unpack-objects";
@@ -759,13 +860,23 @@ static int get_pack(struct fetch_pack_args *args,
? 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;
if (start_command(&cmd))
- die("fetch-pack: unable to fork off %s", cmd_name);
+ die(_("fetch-pack: unable to fork off %s"), cmd_name);
if (do_keep && pack_lockfile) {
*pack_lockfile = index_pack_lockfile(cmd.out);
close(cmd.out);
@@ -781,9 +892,9 @@ static int get_pack(struct fetch_pack_args *args,
args->check_self_contained_and_connected &&
ret == 0;
else
- die("%s failed", cmd_name);
+ die(_("%s failed"), cmd_name);
if (use_sideband && finish_async(&demux))
- die("error in sideband demultiplexer");
+ die(_("error in sideband demultiplexer"));
return 0;
}
@@ -802,49 +913,46 @@ static struct ref *do_fetch_pack(struct fetch_pack_args *args,
char **pack_lockfile)
{
struct ref *ref = copy_ref_list(orig_ref);
- unsigned char sha1[20];
+ struct object_id oid;
const char *agent_feature;
int agent_len;
+ struct fetch_negotiator negotiator;
+ fetch_negotiator_init(&negotiator, negotiation_algorithm);
sort_ref_list(&ref, ref_compare_name);
- qsort(sought, nr_sought, sizeof(*sought), cmp_ref_by_name);
+ QSORT(sought, nr_sought, cmp_ref_by_name);
- if ((args->depth > 0 || is_repository_shallow()) && !server_supports("shallow"))
- die("Server does not support shallow clients");
+ if ((args->depth > 0 || is_repository_shallow(the_repository)) && !server_supports("shallow"))
+ 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")) {
- if (args->verbose)
- fprintf(stderr, "Server supports multi_ack_detailed\n");
+ print_verbose(args, _("Server supports multi_ack_detailed"));
multi_ack = 2;
if (server_supports("no-done")) {
- if (args->verbose)
- fprintf(stderr, "Server supports no-done\n");
+ print_verbose(args, _("Server supports no-done"));
if (args->stateless_rpc)
no_done = 1;
}
}
else if (server_supports("multi_ack")) {
- if (args->verbose)
- fprintf(stderr, "Server supports multi_ack\n");
+ print_verbose(args, _("Server supports multi_ack"));
multi_ack = 1;
}
if (server_supports("side-band-64k")) {
- if (args->verbose)
- fprintf(stderr, "Server supports side-band-64k\n");
+ print_verbose(args, _("Server supports side-band-64k"));
use_sideband = 2;
}
else if (server_supports("side-band")) {
- if (args->verbose)
- fprintf(stderr, "Server supports side-band\n");
+ print_verbose(args, _("Server supports side-band"));
use_sideband = 1;
}
if (server_supports("allow-tip-sha1-in-want")) {
- if (args->verbose)
- fprintf(stderr, "Server supports allow-tip-sha1-in-want\n");
+ print_verbose(args, _("Server supports allow-tip-sha1-in-want"));
allow_unadvertised_object_request |= ALLOW_TIP_SHA1;
}
if (server_supports("allow-reachable-sha1-in-want")) {
- if (args->verbose)
- fprintf(stderr, "Server supports allow-reachable-sha1-in-want\n");
+ print_verbose(args, _("Server supports allow-reachable-sha1-in-want"));
allow_unadvertised_object_request |= ALLOW_REACHABLE_SHA1;
}
if (!server_supports("thin-pack"))
@@ -853,33 +961,51 @@ static struct ref *do_fetch_pack(struct fetch_pack_args *args,
args->no_progress = 0;
if (!server_supports("include-tag"))
args->include_tag = 0;
- if (server_supports("ofs-delta")) {
- if (args->verbose)
- fprintf(stderr, "Server supports ofs-delta\n");
- } else
+ if (server_supports("ofs-delta"))
+ print_verbose(args, _("Server supports ofs-delta"));
+ else
prefer_ofs_delta = 0;
+ if (server_supports("filter")) {
+ server_supports_filtering = 1;
+ print_verbose(args, _("Server supports filter"));
+ } else if (args->filter_options.choice) {
+ warning("filtering not recognized by server, ignoring");
+ }
+
if ((agent_feature = server_feature_value("agent", &agent_len))) {
agent_supported = 1;
- if (args->verbose && agent_len)
- fprintf(stderr, "Server version is %.*s\n",
- agent_len, agent_feature);
+ if (agent_len)
+ print_verbose(args, _("Server version is %.*s"),
+ agent_len, agent_feature);
}
-
- if (everything_local(args, &ref, sought, nr_sought)) {
+ if (server_supports("deepen-since"))
+ deepen_since_ok = 1;
+ else if (args->deepen_since)
+ die(_("Server does not support --shallow-since"));
+ if (server_supports("deepen-not"))
+ deepen_not_ok = 1;
+ else if (args->deepen_not)
+ die(_("Server does not support --shallow-exclude"));
+ if (!server_supports("deepen-relative") && args->deepen_relative)
+ die(_("Server does not support --deepen"));
+
+ 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;
}
- if (find_common(args, fd, sha1, 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.
*/
- warning("no common commits");
+ warning(_("no common commits"));
if (args->stateless_rpc)
packet_flush(fd[1]);
- if (args->depth > 0)
+ if (args->deepen)
setup_alternate_shallow(&shallow_lock, &alternate_shallow_file,
NULL);
else if (si->nr_ours || si->nr_theirs)
@@ -887,12 +1013,422 @@ static struct ref *do_fetch_pack(struct fetch_pack_args *args,
else
alternate_shallow_file = NULL;
if (get_pack(args, fd, pack_lockfile))
- die("git fetch-pack: fetch failed.");
+ die(_("git fetch-pack: fetch failed."));
all_done:
+ 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);
+ }
+ }
+}
+
+static void add_wants(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.
+ */
+ if (((o = lookup_object(the_repository, remote->hash)) != 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,
+ const struct fetch_pack_args *args,
+ const struct ref *wants, struct oidset *common,
+ int *haves_to_send, int *in_vain)
+{
+ 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_write_fmt(fd_out, "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");
+
+ /* 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) {
+ print_verbose(args, _("Server supports filter"));
+ packet_buf_write(&req_buf, "filter %s",
+ args->filter_options.filter_spec);
+ } else if (args->filter_options.choice) {
+ warning("filtering not recognized by server, ignoring");
+ }
+
+ /* add wants */
+ add_wants(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);
+ write_or_die(fd_out, req_buf.buf, req_buf.len);
+
+ 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);
+ 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);
+
+ /* 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)
+{
+ 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);
+ register_shallow(the_repository, &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.hash))
+ 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);
+ 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);
+
+ setup_alternate_shallow(&shallow_lock, &alternate_shallow_file, NULL);
+ args->deepen = 1;
+}
+
+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;
+ int i;
+
+ if (parse_oid_hex(reader->line, &oid, &end) || *end++ != ' ')
+ die(_("expected wanted-ref, got '%s'"), reader->line);
+
+ for (i = 0; i < nr_sought; i++) {
+ if (!strcmp(end, sought[i]->name)) {
+ oidcpy(&sought[i]->old_oid, &oid);
+ break;
+ }
+ }
+
+ if (i == nr_sought)
+ die(_("unexpected wanted-ref: '%s'"), reader->line);
+ }
+
+ 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,
+ char **pack_lockfile)
+{
+ 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;
+ int haves_to_send = INITIAL_FLUSH;
+ struct fetch_negotiator negotiator;
+ fetch_negotiator_init(&negotiator, negotiation_algorithm);
+ packet_reader_init(&reader, fd[0], NULL, 0,
+ PACKET_READ_CHOMP_NEWLINE);
+
+ 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 */
+ 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);
+ break;
+ case FETCH_SEND_REQUEST:
+ if (send_fetch_request(&negotiator, fd[1], args, ref,
+ &common,
+ &haves_to_send, &in_vain))
+ 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:
+ /* Check for shallow-info section */
+ if (process_section_header(&reader, "shallow-info", 1))
+ receive_shallow_info(args, &reader);
+
+ 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))
+ die(_("git fetch-pack: fetch failed."));
+
+ state = FETCH_DONE;
+ break;
+ case FETCH_DONE:
+ continue;
+ }
+ }
+
+ 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);
@@ -900,8 +1436,10 @@ static void fetch_pack_config(void)
git_config_get_bool("repack.usedeltabaseoffset", &prefer_ofs_delta);
git_config_get_bool("fetch.fsckobjects", &fetch_fsck_objects);
git_config_get_bool("transfer.fsckobjects", &transfer_fsck_objects);
+ git_config_get_string("fetch.negotiationalgorithm",
+ &negotiation_algorithm);
- git_config(git_default_config, NULL);
+ git_config(fetch_pack_config_cb, NULL);
}
static void fetch_pack_setup(void)
@@ -942,13 +1480,13 @@ static void update_shallow(struct fetch_pack_args *args,
struct ref **sought, int nr_sought,
struct shallow_info *si)
{
- struct sha1_array ref = SHA1_ARRAY_INIT;
+ struct oid_array ref = OID_ARRAY_INIT;
int *status;
int i;
- if (args->depth > 0 && alternate_shallow_file) {
+ 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);
@@ -965,18 +1503,18 @@ static void update_shallow(struct fetch_pack_args *args,
* shallow points that exist in the pack (iow in repo
* after get_pack() and reprepare_packed_git())
*/
- struct sha1_array extra = SHA1_ARRAY_INIT;
- unsigned char (*sha1)[20] = si->shallow->sha1;
+ struct oid_array extra = OID_ARRAY_INIT;
+ struct object_id *oid = si->shallow->oid;
for (i = 0; i < si->shallow->nr; i++)
- if (has_sha1_file(sha1[i]))
- sha1_array_append(&extra, sha1[i]);
+ if (has_object_file(&oid[i]))
+ oid_array_append(&extra, &oid[i]);
if (extra.nr) {
setup_alternate_shallow(&shallow_lock,
&alternate_shallow_file,
&extra);
commit_lock_file(&shallow_lock);
}
- sha1_array_clear(&extra);
+ oid_array_clear(&extra);
return;
}
@@ -987,7 +1525,7 @@ static void update_shallow(struct fetch_pack_args *args,
if (!si->nr_ours && !si->nr_theirs)
return;
for (i = 0; i < nr_sought; i++)
- sha1_array_append(&ref, sought[i]->old_oid.hash);
+ oid_array_append(&ref, &sought[i]->old_oid);
si->ref = &ref;
if (args->update_shallow) {
@@ -997,23 +1535,23 @@ static void update_shallow(struct fetch_pack_args *args,
* shallow roots that are actually reachable from new
* refs.
*/
- struct sha1_array extra = SHA1_ARRAY_INIT;
- unsigned char (*sha1)[20] = si->shallow->sha1;
+ struct oid_array extra = OID_ARRAY_INIT;
+ struct object_id *oid = si->shallow->oid;
assign_shallow_commits_to_refs(si, NULL, NULL);
if (!si->nr_ours && !si->nr_theirs) {
- sha1_array_clear(&ref);
+ oid_array_clear(&ref);
return;
}
for (i = 0; i < si->nr_ours; i++)
- sha1_array_append(&extra, sha1[si->ours[i]]);
+ oid_array_append(&extra, &oid[si->ours[i]]);
for (i = 0; i < si->nr_theirs; i++)
- sha1_array_append(&extra, sha1[si->theirs[i]]);
+ oid_array_append(&extra, &oid[si->theirs[i]]);
setup_alternate_shallow(&shallow_lock,
&alternate_shallow_file,
&extra);
commit_lock_file(&shallow_lock);
- sha1_array_clear(&extra);
- sha1_array_clear(&ref);
+ oid_array_clear(&extra);
+ oid_array_clear(&ref);
return;
}
@@ -1029,7 +1567,19 @@ static void update_shallow(struct fetch_pack_args *args,
sought[i]->status = REF_STATUS_REJECT_SHALLOW;
}
free(status);
- sha1_array_clear(&ref);
+ 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,
@@ -1037,8 +1587,9 @@ struct ref *fetch_pack(struct fetch_pack_args *args,
const struct ref *ref,
const char *dest,
struct ref **sought, int nr_sought,
- struct sha1_array *shallow,
- char **pack_lockfile)
+ struct oid_array *shallow,
+ char **pack_lockfile,
+ enum protocol_version version)
{
struct ref *ref_cpy;
struct shallow_info si;
@@ -1049,13 +1600,58 @@ struct ref *fetch_pack(struct fetch_pack_args *args,
if (!ref) {
packet_flush(fd[1]);
- die("no matching remote head");
+ 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)
+ ref_cpy = do_fetch_pack_v2(args, fd, ref, sought, nr_sought,
+ pack_lockfile);
+ else
+ 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);
return ref_cpy;
}
+
+int report_unmatched_refs(struct ref **sought, int nr_sought)
+{
+ int i, ret = 0;
+
+ for (i = 0; i < nr_sought; i++) {
+ if (!sought[i])
+ continue;
+ switch (sought[i]->match_status) {
+ case REF_MATCHED:
+ continue;
+ case REF_NOT_MATCHED:
+ error(_("no such remote ref %s"), sought[i]->name);
+ break;
+ case REF_UNADVERTISED_NOT_ALLOWED:
+ error(_("Server does not allow request for unadvertised object %s"),
+ sought[i]->name);
+ break;
+ }
+ ret = 1;
+ }
+ return ret;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-13 02:40:15 +0000