2005-07-05 22:45:37 +00:00
|
|
|
#include "cache.h"
|
|
|
|
#include "refs.h"
|
|
|
|
#include "pkt-line.h"
|
|
|
|
#include <sys/wait.h>
|
|
|
|
|
2005-10-13 01:12:27 +00:00
|
|
|
static const char clone_pack_usage[] =
|
2005-10-19 21:43:43 +00:00
|
|
|
"git-clone-pack [--exec=<git-upload-pack>] [<host>:]<directory> [<heads>]*";
|
2005-07-05 22:45:37 +00:00
|
|
|
static const char *exec = "git-upload-pack";
|
|
|
|
|
|
|
|
static void clone_handshake(int fd[2], struct ref *ref)
|
|
|
|
{
|
|
|
|
unsigned char sha1[20];
|
|
|
|
|
|
|
|
while (ref) {
|
2005-07-16 20:55:50 +00:00
|
|
|
packet_write(fd[1], "want %s\n", sha1_to_hex(ref->old_sha1));
|
2005-07-05 22:45:37 +00:00
|
|
|
ref = ref->next;
|
|
|
|
}
|
|
|
|
packet_flush(fd[1]);
|
|
|
|
|
|
|
|
/* We don't have nuttin' */
|
|
|
|
packet_write(fd[1], "done\n");
|
|
|
|
if (get_ack(fd[0], sha1))
|
|
|
|
error("Huh! git-clone-pack got positive ack for %s", sha1_to_hex(sha1));
|
|
|
|
}
|
|
|
|
|
|
|
|
static int is_master(struct ref *ref)
|
|
|
|
{
|
|
|
|
return !strcmp(ref->name, "refs/heads/master");
|
|
|
|
}
|
|
|
|
|
|
|
|
static void write_one_ref(struct ref *ref)
|
|
|
|
{
|
2005-08-09 15:30:22 +00:00
|
|
|
char *path = git_path("%s", ref->name);
|
2005-07-06 08:11:52 +00:00
|
|
|
int fd;
|
2005-07-05 22:45:37 +00:00
|
|
|
char *hex;
|
|
|
|
|
2005-10-14 01:57:39 +00:00
|
|
|
if (!strncmp(ref->name, "refs/", 5) &&
|
|
|
|
check_ref_format(ref->name + 5)) {
|
|
|
|
error("refusing to create funny ref '%s' locally", ref->name);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2005-07-06 08:11:52 +00:00
|
|
|
if (safe_create_leading_directories(path))
|
|
|
|
die("unable to create leading directory for %s", ref->name);
|
|
|
|
fd = open(path, O_CREAT | O_EXCL | O_WRONLY, 0666);
|
2005-07-05 22:45:37 +00:00
|
|
|
if (fd < 0)
|
|
|
|
die("unable to create ref %s", ref->name);
|
2005-07-16 20:55:50 +00:00
|
|
|
hex = sha1_to_hex(ref->old_sha1);
|
2005-07-05 22:45:37 +00:00
|
|
|
hex[40] = '\n';
|
|
|
|
if (write(fd, hex, 41) != 41)
|
|
|
|
die("unable to write ref %s", ref->name);
|
|
|
|
close(fd);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void write_refs(struct ref *ref)
|
|
|
|
{
|
|
|
|
struct ref *head = NULL, *head_ptr, *master_ref;
|
|
|
|
char *head_path;
|
|
|
|
|
2005-10-05 22:29:48 +00:00
|
|
|
/* Upload-pack must report HEAD first */
|
2005-07-05 22:45:37 +00:00
|
|
|
if (!strcmp(ref->name, "HEAD")) {
|
|
|
|
head = ref;
|
|
|
|
ref = ref->next;
|
|
|
|
}
|
|
|
|
head_ptr = NULL;
|
|
|
|
master_ref = NULL;
|
|
|
|
while (ref) {
|
|
|
|
if (is_master(ref))
|
|
|
|
master_ref = ref;
|
2005-10-05 22:29:48 +00:00
|
|
|
if (head &&
|
|
|
|
!memcmp(ref->old_sha1, head->old_sha1, 20) &&
|
|
|
|
!strncmp(ref->name, "refs/heads/",11) &&
|
|
|
|
(!head_ptr || ref == master_ref))
|
|
|
|
head_ptr = ref;
|
|
|
|
|
2005-07-05 22:45:37 +00:00
|
|
|
write_one_ref(ref);
|
|
|
|
ref = ref->next;
|
|
|
|
}
|
2005-10-05 22:29:48 +00:00
|
|
|
if (!head) {
|
|
|
|
fprintf(stderr, "No HEAD in remote.\n");
|
2005-07-05 22:45:37 +00:00
|
|
|
return;
|
2005-10-05 22:29:48 +00:00
|
|
|
}
|
2005-07-05 22:45:37 +00:00
|
|
|
|
2005-10-05 22:29:48 +00:00
|
|
|
head_path = strdup(git_path("HEAD"));
|
2005-07-05 22:45:37 +00:00
|
|
|
if (!head_ptr) {
|
|
|
|
/*
|
|
|
|
* If we had a master ref, and it wasn't HEAD, we need to undo the
|
|
|
|
* symlink, and write a standalone HEAD. Give a warning, because that's
|
|
|
|
* really really wrong.
|
|
|
|
*/
|
|
|
|
if (master_ref) {
|
|
|
|
error("HEAD doesn't point to any refs! Making standalone HEAD");
|
|
|
|
unlink(head_path);
|
|
|
|
}
|
|
|
|
write_one_ref(head);
|
2005-10-05 22:29:48 +00:00
|
|
|
free(head_path);
|
2005-07-05 22:45:37 +00:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* We reset to the master branch if it's available */
|
|
|
|
if (master_ref)
|
|
|
|
return;
|
|
|
|
|
2005-10-05 22:29:48 +00:00
|
|
|
fprintf(stderr, "Setting HEAD to %s\n", head_ptr->name);
|
|
|
|
|
2005-07-05 22:45:37 +00:00
|
|
|
/*
|
|
|
|
* Uhhuh. Other end didn't have master. We start HEAD off with
|
|
|
|
* the first branch with the same value.
|
|
|
|
*/
|
2005-10-05 22:29:48 +00:00
|
|
|
if (create_symref(head_path, head_ptr->name) < 0)
|
2005-07-05 22:45:37 +00:00
|
|
|
die("unable to link HEAD to %s", head_ptr->name);
|
2005-10-05 22:29:48 +00:00
|
|
|
free(head_path);
|
2005-07-05 22:45:37 +00:00
|
|
|
}
|
|
|
|
|
2005-10-13 01:12:27 +00:00
|
|
|
static int finish_pack(const char *pack_tmp_name)
|
|
|
|
{
|
|
|
|
int pipe_fd[2];
|
|
|
|
pid_t pid;
|
|
|
|
char idx[PATH_MAX];
|
|
|
|
char final[PATH_MAX];
|
|
|
|
char hash[41];
|
|
|
|
unsigned char sha1[20];
|
|
|
|
char *cp;
|
|
|
|
int err = 0;
|
|
|
|
|
|
|
|
if (pipe(pipe_fd) < 0)
|
|
|
|
die("git-clone-pack: unable to set up pipe");
|
|
|
|
|
|
|
|
strcpy(idx, pack_tmp_name); /* ".git/objects/pack-XXXXXX" */
|
|
|
|
cp = strrchr(idx, '/');
|
|
|
|
memcpy(cp, "/pidx", 5);
|
|
|
|
|
|
|
|
pid = fork();
|
|
|
|
if (pid < 0)
|
|
|
|
die("git-clone-pack: unable to fork off git-index-pack");
|
|
|
|
if (!pid) {
|
|
|
|
close(0);
|
|
|
|
dup2(pipe_fd[1], 1);
|
|
|
|
close(pipe_fd[0]);
|
|
|
|
close(pipe_fd[1]);
|
|
|
|
execlp("git-index-pack","git-index-pack",
|
|
|
|
"-o", idx, pack_tmp_name, NULL);
|
|
|
|
error("cannot exec git-index-pack <%s> <%s>",
|
|
|
|
idx, pack_tmp_name);
|
|
|
|
exit(1);
|
|
|
|
}
|
|
|
|
close(pipe_fd[1]);
|
|
|
|
if (read(pipe_fd[0], hash, 40) != 40) {
|
|
|
|
error("git-clone-pack: unable to read from git-index-pack");
|
|
|
|
err = 1;
|
|
|
|
}
|
|
|
|
close(pipe_fd[0]);
|
|
|
|
|
|
|
|
for (;;) {
|
|
|
|
int status, code;
|
|
|
|
int retval = waitpid(pid, &status, 0);
|
|
|
|
|
|
|
|
if (retval < 0) {
|
|
|
|
if (errno == EINTR)
|
|
|
|
continue;
|
|
|
|
error("waitpid failed (%s)", strerror(retval));
|
|
|
|
goto error_die;
|
|
|
|
}
|
|
|
|
if (WIFSIGNALED(status)) {
|
|
|
|
int sig = WTERMSIG(status);
|
|
|
|
error("git-index-pack died of signal %d", sig);
|
|
|
|
goto error_die;
|
|
|
|
}
|
|
|
|
if (!WIFEXITED(status)) {
|
|
|
|
error("git-index-pack died of unnatural causes %d",
|
|
|
|
status);
|
|
|
|
goto error_die;
|
|
|
|
}
|
|
|
|
code = WEXITSTATUS(status);
|
|
|
|
if (code) {
|
|
|
|
error("git-index-pack died with error code %d", code);
|
|
|
|
goto error_die;
|
|
|
|
}
|
|
|
|
if (err)
|
|
|
|
goto error_die;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
hash[40] = 0;
|
|
|
|
if (get_sha1_hex(hash, sha1)) {
|
|
|
|
error("git-index-pack reported nonsense '%s'", hash);
|
|
|
|
goto error_die;
|
|
|
|
}
|
|
|
|
/* Now we have pack in pack_tmp_name[], and
|
|
|
|
* idx in idx[]; rename them to their final names.
|
|
|
|
*/
|
|
|
|
snprintf(final, sizeof(final),
|
|
|
|
"%s/pack/pack-%s.pack", get_object_directory(), hash);
|
|
|
|
move_temp_to_file(pack_tmp_name, final);
|
2005-10-13 01:12:27 +00:00
|
|
|
chmod(final, 0444);
|
2005-10-13 01:12:27 +00:00
|
|
|
snprintf(final, sizeof(final),
|
|
|
|
"%s/pack/pack-%s.idx", get_object_directory(), hash);
|
|
|
|
move_temp_to_file(idx, final);
|
2005-10-13 01:12:27 +00:00
|
|
|
chmod(final, 0444);
|
2005-10-13 01:12:27 +00:00
|
|
|
return 0;
|
|
|
|
|
|
|
|
error_die:
|
|
|
|
unlink(idx);
|
|
|
|
unlink(pack_tmp_name);
|
|
|
|
exit(1);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int clone_without_unpack(int fd[2])
|
|
|
|
{
|
|
|
|
char tmpfile[PATH_MAX];
|
|
|
|
int ofd, ifd;
|
|
|
|
|
|
|
|
ifd = fd[0];
|
|
|
|
snprintf(tmpfile, sizeof(tmpfile),
|
2005-10-25 23:41:20 +00:00
|
|
|
"%s/pack/tmp-XXXXXX", get_object_directory());
|
2005-10-13 01:12:27 +00:00
|
|
|
ofd = mkstemp(tmpfile);
|
|
|
|
if (ofd < 0)
|
|
|
|
return error("unable to create temporary file %s", tmpfile);
|
|
|
|
|
|
|
|
while (1) {
|
|
|
|
char buf[8192];
|
|
|
|
ssize_t sz, wsz, pos;
|
|
|
|
sz = read(ifd, buf, sizeof(buf));
|
|
|
|
if (sz == 0)
|
|
|
|
break;
|
|
|
|
if (sz < 0) {
|
|
|
|
error("error reading pack (%s)", strerror(errno));
|
|
|
|
close(ofd);
|
|
|
|
unlink(tmpfile);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
pos = 0;
|
|
|
|
while (pos < sz) {
|
|
|
|
wsz = write(ofd, buf + pos, sz - pos);
|
|
|
|
if (wsz < 0) {
|
|
|
|
error("error writing pack (%s)",
|
|
|
|
strerror(errno));
|
|
|
|
close(ofd);
|
|
|
|
unlink(tmpfile);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
pos += wsz;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
close(ofd);
|
|
|
|
return finish_pack(tmpfile);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int clone_pack(int fd[2], int nr_match, char **match)
|
|
|
|
{
|
|
|
|
struct ref *refs;
|
|
|
|
int status;
|
|
|
|
|
2005-10-14 01:57:40 +00:00
|
|
|
get_remote_heads(fd[0], &refs, nr_match, match, 1);
|
2005-10-13 01:12:27 +00:00
|
|
|
if (!refs) {
|
|
|
|
packet_flush(fd[1]);
|
|
|
|
die("no matching remote head");
|
|
|
|
}
|
|
|
|
clone_handshake(fd, refs);
|
|
|
|
|
2005-10-19 21:43:43 +00:00
|
|
|
status = clone_without_unpack(fd);
|
2005-10-13 01:12:27 +00:00
|
|
|
|
|
|
|
if (!status)
|
|
|
|
write_refs(refs);
|
|
|
|
return status;
|
|
|
|
}
|
|
|
|
|
2005-07-05 22:45:37 +00:00
|
|
|
int main(int argc, char **argv)
|
|
|
|
{
|
|
|
|
int i, ret, nr_heads;
|
|
|
|
char *dest = NULL, **heads;
|
|
|
|
int fd[2];
|
|
|
|
pid_t pid;
|
|
|
|
|
2005-11-26 08:47:59 +00:00
|
|
|
setup_git_directory();
|
|
|
|
|
2005-07-05 22:45:37 +00:00
|
|
|
nr_heads = 0;
|
|
|
|
heads = NULL;
|
|
|
|
for (i = 1; i < argc; i++) {
|
|
|
|
char *arg = argv[i];
|
|
|
|
|
|
|
|
if (*arg == '-') {
|
2005-10-19 21:43:43 +00:00
|
|
|
if (!strcmp("-q", arg))
|
2005-07-09 17:52:35 +00:00
|
|
|
continue;
|
2005-07-14 03:25:54 +00:00
|
|
|
if (!strncmp("--exec=", arg, 7)) {
|
|
|
|
exec = arg + 7;
|
|
|
|
continue;
|
|
|
|
}
|
2005-10-19 21:43:43 +00:00
|
|
|
if (!strcmp("--keep", arg))
|
2005-10-13 01:12:27 +00:00
|
|
|
continue;
|
2005-07-05 22:45:37 +00:00
|
|
|
usage(clone_pack_usage);
|
|
|
|
}
|
|
|
|
dest = arg;
|
|
|
|
heads = argv + i + 1;
|
|
|
|
nr_heads = argc - i - 1;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (!dest)
|
|
|
|
usage(clone_pack_usage);
|
|
|
|
pid = git_connect(fd, dest, exec);
|
|
|
|
if (pid < 0)
|
|
|
|
return 1;
|
|
|
|
ret = clone_pack(fd, nr_heads, heads);
|
|
|
|
close(fd[0]);
|
|
|
|
close(fd[1]);
|
|
|
|
finish_connect(pid);
|
|
|
|
return ret;
|
|
|
|
}
|