#include "pkt-line.h"
#include "commit.h"
#include "tag.h"
-#include <time.h>
-#include <sys/wait.h>
+static int keep_pack;
static int quiet;
static int verbose;
+static int fetch_all;
static const char fetch_pack_usage[] =
-"git-fetch-pack [-q] [-v] [--exec=upload-pack] [host:]directory <refs>...";
+"git-fetch-pack [--all] [-q] [-v] [-k] [--thin] [--exec=upload-pack] [host:]directory <refs>...";
static const char *exec = "git-upload-pack";
#define COMPLETE (1U << 0)
#define SEEN (1U << 3)
#define POPPED (1U << 4)
+/*
+ * After sending this many "have"s if we do not get any new ACK , we
+ * give up traversing our history.
+ */
+#define MAX_IN_VAIN 256
+
static struct commit_list *rev_list = NULL;
-static int non_common_revs = 0, multi_ack = 0;
+static int non_common_revs = 0, multi_ack = 0, use_thin_pack = 0, use_sideband;
static void rev_list_push(struct commit *commit, int mark)
{
{
struct object *o = deref_tag(parse_object(sha1), path, 0);
- if (o && o->type == commit_type)
+ if (o && o->type == OBJ_COMMIT)
rev_list_push((struct commit *)o, SEEN);
return 0;
Get the next rev to send, ignoring the common.
*/
-static const unsigned char* get_rev()
+static const unsigned char* get_rev(void)
{
struct commit *commit = NULL;
int fetching;
int count = 0, flushes = 0, retval;
const unsigned char *sha1;
+ unsigned in_vain = 0;
+ int got_continue = 0;
for_each_ref(rev_list_insert_ref);
continue;
}
- packet_write(fd[1], "want %s%s\n", sha1_to_hex(remote),
- multi_ack ? " multi_ack" : "");
+ if (!fetching)
+ packet_write(fd[1], "want %s%s%s%s\n",
+ sha1_to_hex(remote),
+ (multi_ack ? " multi_ack" : ""),
+ (use_sideband ? " side-band" : ""),
+ (use_thin_pack ? " thin-pack" : ""));
+ else
+ packet_write(fd[1], "want %s\n", sha1_to_hex(remote));
fetching++;
}
packet_flush(fd[1]);
packet_write(fd[1], "have %s\n", sha1_to_hex(sha1));
if (verbose)
fprintf(stderr, "have %s\n", sha1_to_hex(sha1));
+ in_vain++;
if (!(31 & ++count)) {
int ack;
lookup_commit(result_sha1);
mark_common(commit, 0, 1);
retval = 0;
+ in_vain = 0;
+ got_continue = 1;
}
} while (ack);
flushes--;
+ if (got_continue && MAX_IN_VAIN < in_vain) {
+ if (verbose)
+ fprintf(stderr, "giving up\n");
+ break; /* give up */
+ }
}
}
done:
{
struct object *o = parse_object(sha1);
- while (o && o->type == tag_type) {
+ 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->sha1);
}
- if (o && o->type == commit_type) {
+ if (o && o->type == OBJ_COMMIT) {
struct commit *commit = (struct commit *)o;
commit->object.flags |= COMPLETE;
insert_by_date(commit, &complete);
static void filter_refs(struct ref **refs, int nr_match, char **match)
{
- struct ref *prev, *current, *next;
-
- if (!nr_match)
- return;
-
- for (prev = NULL, current = *refs; current; current = next) {
- next = current->next;
- if ((!memcmp(current->name, "refs/", 5) &&
- check_ref_format(current->name + 5)) ||
- !path_match(current->name, nr_match, match)) {
- if (prev == NULL)
- *refs = next;
- else
- prev->next = next;
- free(current);
- } else
- prev = current;
+ struct ref **return_refs;
+ struct ref *newlist = NULL;
+ struct ref **newtail = &newlist;
+ struct ref *ref, *next;
+ struct ref *fastarray[32];
+
+ if (nr_match && !fetch_all) {
+ if (ARRAY_SIZE(fastarray) < nr_match)
+ return_refs = xcalloc(nr_match, sizeof(struct ref *));
+ else {
+ return_refs = fastarray;
+ memset(return_refs, 0, sizeof(struct ref *) * nr_match);
+ }
}
+ else
+ return_refs = NULL;
+
+ for (ref = *refs; ref; ref = next) {
+ next = ref->next;
+ if (!memcmp(ref->name, "refs/", 5) &&
+ check_ref_format(ref->name + 5))
+ ; /* trash */
+ else if (fetch_all) {
+ *newtail = ref;
+ ref->next = NULL;
+ newtail = &ref->next;
+ continue;
+ }
+ else {
+ int order = path_match(ref->name, nr_match, match);
+ if (order) {
+ return_refs[order-1] = ref;
+ continue; /* we will link it later */
+ }
+ }
+ free(ref);
+ }
+
+ if (!fetch_all) {
+ int i;
+ for (i = 0; i < nr_match; i++) {
+ ref = return_refs[i];
+ if (ref) {
+ *newtail = ref;
+ ref->next = NULL;
+ newtail = &ref->next;
+ }
+ }
+ if (return_refs != fastarray)
+ free(return_refs);
+ }
+ *refs = newlist;
}
static int everything_local(struct ref **refs, int nr_match, char **match)
* in sync with the other side at some time after
* that (it is OK if we guess wrong here).
*/
- if (o->type == commit_type) {
+ if (o->type == OBJ_COMMIT) {
struct commit *commit = (struct commit *)o;
if (!cutoff || cutoff < commit->date)
cutoff = commit->date;
struct object *o = deref_tag(lookup_object(ref->old_sha1),
NULL, 0);
- if (!o || o->type != commit_type || !(o->flags & COMPLETE))
+ if (!o || o->type != OBJ_COMMIT || !(o->flags & COMPLETE))
continue;
if (!(o->flags & SEEN)) {
struct ref *ref;
unsigned char sha1[20];
int status;
- pid_t pid;
get_remote_heads(fd[0], &ref, 0, NULL, 0);
if (server_supports("multi_ack")) {
fprintf(stderr, "Server supports multi_ack\n");
multi_ack = 1;
}
+ if (server_supports("side-band")) {
+ if (verbose)
+ fprintf(stderr, "Server supports side-band\n");
+ use_sideband = 1;
+ }
if (!ref) {
packet_flush(fd[1]);
die("no matching remote head");
goto all_done;
}
if (find_common(fd, sha1, ref) < 0)
- fprintf(stderr, "warning: no common commits\n");
- pid = fork();
- if (pid < 0)
- die("git-fetch-pack: unable to fork off git-unpack-objects");
- if (!pid) {
- dup2(fd[0], 0);
- close(fd[0]);
- close(fd[1]);
- execlp("git-unpack-objects", "git-unpack-objects",
- quiet ? "-q" : NULL, NULL);
- die("git-unpack-objects exec failed");
- }
- close(fd[0]);
- close(fd[1]);
- while (waitpid(pid, &status, 0) < 0) {
- if (errno != EINTR)
- die("waiting for git-unpack-objects: %s", strerror(errno));
- }
- if (WIFEXITED(status)) {
- int code = WEXITSTATUS(status);
- if (code)
- die("git-unpack-objects died with error code %d", code);
-all_done:
- while (ref) {
- printf("%s %s\n",
- sha1_to_hex(ref->old_sha1), ref->name);
- ref = ref->next;
- }
- return 0;
- }
- if (WIFSIGNALED(status)) {
- int sig = WTERMSIG(status);
- die("git-unpack-objects died of signal %d", sig);
+ if (!keep_pack)
+ /* When cloning, it is not unusual to have
+ * no common commit.
+ */
+ fprintf(stderr, "warning: no common commits\n");
+
+ if (keep_pack)
+ status = receive_keep_pack(fd, "git-fetch-pack", quiet, use_sideband);
+ else
+ status = receive_unpack_pack(fd, "git-fetch-pack", quiet, use_sideband);
+
+ if (status)
+ die("git-fetch-pack: fetch failed.");
+
+ all_done:
+ while (ref) {
+ printf("%s %s\n",
+ sha1_to_hex(ref->old_sha1), ref->name);
+ ref = ref->next;
}
- die("Sherlock Holmes! git-unpack-objects died of unnatural causes %d!", status);
+ return 0;
}
int main(int argc, char **argv)
int fd[2];
pid_t pid;
+ setup_git_directory();
+
nr_heads = 0;
heads = NULL;
for (i = 1; i < argc; i++) {
exec = arg + 7;
continue;
}
- if (!strcmp("-q", arg)) {
+ if (!strcmp("--quiet", arg) || !strcmp("-q", arg)) {
quiet = 1;
continue;
}
+ if (!strcmp("--keep", arg) || !strcmp("-k", arg)) {
+ keep_pack = 1;
+ continue;
+ }
+ if (!strcmp("--thin", arg)) {
+ use_thin_pack = 1;
+ continue;
+ }
+ if (!strcmp("--all", arg)) {
+ fetch_all = 1;
+ continue;
+ }
if (!strcmp("-v", arg)) {
verbose = 1;
continue;
}
if (!dest)
usage(fetch_pack_usage);
+ if (keep_pack)
+ use_thin_pack = 0;
pid = git_connect(fd, dest, exec);
if (pid < 0)
return 1;