#include "pack.h"
#include "sideband.h"
#include "fetch-pack.h"
+#include "remote.h"
+#include "run-command.h"
-static int keep_pack;
static int transfer_unpack_limit = -1;
static int fetch_unpack_limit = -1;
static int unpack_limit = 100;
-static int quiet;
-static int verbose;
-static int fetch_all;
-static int depth;
-static int no_progress;
+static struct fetch_pack_args args = {
+ /* .uploadpack = */ "git-upload-pack",
+};
+
static const char fetch_pack_usage[] =
-"git-fetch-pack [--all] [--quiet|-q] [--keep|-k] [--thin] [--upload-pack=<git-upload-pack>] [--depth=<n>] [--no-progress] [-v] [<host>:]<directory> [<refs>...]";
-static const char *uploadpack = "git-upload-pack";
+"git fetch-pack [--all] [--quiet|-q] [--keep|-k] [--thin] [--include-tag] [--upload-pack=<git-upload-pack>] [--depth=<n>] [--no-progress] [-v] [<host>:]<directory> [<refs>...]";
#define COMPLETE (1U << 0)
#define COMMON (1U << 1)
#define SEEN (1U << 3)
#define POPPED (1U << 4)
+static int marked;
+
/*
* 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;
-static int non_common_revs, multi_ack, use_thin_pack, use_sideband;
+static int non_common_revs, multi_ack, use_sideband;
static void rev_list_push(struct commit *commit, int mark)
{
commit->object.flags |= mark;
if (!(commit->object.parsed))
- parse_commit(commit);
+ if (parse_commit(commit))
+ return;
insert_by_date(commit, &rev_list);
return 0;
}
+static int clear_marks(const char *path, const unsigned char *sha1, int flag, void *cb_data)
+{
+ struct object *o = deref_tag(parse_object(sha1), path, 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
if (!ancestors_only && !(o->flags & POPPED))
non_common_revs--;
if (!o->parsed && !dont_parse)
- parse_commit(commit);
+ if (parse_commit(commit))
+ return;
for (parents = commit->parents;
parents;
while (commit == NULL) {
unsigned int mark;
- struct commit_list* parents;
+ struct commit_list *parents;
if (rev_list == NULL || non_common_revs == 0)
return NULL;
commit = rev_list->item;
- if (!(commit->object.parsed))
+ if (!commit->object.parsed)
parse_commit(commit);
+ parents = commit->parents;
+
commit->object.flags |= POPPED;
if (!(commit->object.flags & COMMON))
non_common_revs--;
- parents = commit->parents;
-
if (commit->object.flags & COMMON) {
/* do not send "have", and ignore ancestors */
commit = NULL;
unsigned in_vain = 0;
int got_continue = 0;
+ if (marked)
+ for_each_ref(clear_marks, NULL);
+ marked = 1;
+
for_each_ref(rev_list_insert_ref, NULL);
fetching = 0;
}
if (!fetching)
- packet_write(fd[1], "want %s%s%s%s%s%s%s\n",
+ packet_write(fd[1], "want %s%s%s%s%s%s%s%s\n",
sha1_to_hex(remote),
(multi_ack ? " multi_ack" : ""),
(use_sideband == 2 ? " side-band-64k" : ""),
(use_sideband == 1 ? " side-band" : ""),
- (use_thin_pack ? " thin-pack" : ""),
- (no_progress ? " no-progress" : ""),
+ (args.use_thin_pack ? " thin-pack" : ""),
+ (args.no_progress ? " no-progress" : ""),
+ (args.include_tag ? " include-tag" : ""),
" ofs-delta");
else
packet_write(fd[1], "want %s\n", sha1_to_hex(remote));
}
if (is_repository_shallow())
write_shallow_commits(fd[1], 1);
- if (depth > 0)
- packet_write(fd[1], "deepen %d", depth);
+ if (args.depth > 0)
+ packet_write(fd[1], "deepen %d", args.depth);
packet_flush(fd[1]);
if (!fetching)
return 1;
- if (depth > 0) {
+ if (args.depth > 0) {
char line[1024];
unsigned char sha1[20];
int len;
if (!lookup_object(sha1))
die("object not found: %s", line);
/* make sure that it is parsed as shallow */
- parse_object(sha1);
+ if (!parse_object(sha1))
+ die("error in object: %s", line);
if (unregister_shallow(sha1))
die("no shallow found: %s", line);
continue;
retval = -1;
while ((sha1 = get_rev())) {
packet_write(fd[1], "have %s\n", sha1_to_hex(sha1));
- if (verbose)
+ if (args.verbose)
fprintf(stderr, "have %s\n", sha1_to_hex(sha1));
in_vain++;
if (!(31 & ++count)) {
do {
ack = get_ack(fd[0], result_sha1);
- if (verbose && ack)
+ if (args.verbose && ack)
fprintf(stderr, "got ack %d %s\n", ack,
sha1_to_hex(result_sha1));
if (ack == 1) {
} while (ack);
flushes--;
if (got_continue && MAX_IN_VAIN < in_vain) {
- if (verbose)
+ if (args.verbose)
fprintf(stderr, "giving up\n");
break; /* give up */
}
}
done:
packet_write(fd[1], "done\n");
- if (verbose)
+ if (args.verbose)
fprintf(stderr, "done\n");
if (retval != 0) {
multi_ack = 0;
while (flushes || multi_ack) {
int ack = get_ack(fd[0], result_sha1);
if (ack) {
- if (verbose)
+ if (args.verbose)
fprintf(stderr, "got ack (%d) %s\n", ack,
sha1_to_hex(result_sha1));
if (ack == 1)
}
flushes--;
}
- return retval;
+ /* it is no error to fetch into a completely empty repo */
+ return count ? retval : 0;
}
static struct commit_list *complete;
static void mark_recent_complete_commits(unsigned long cutoff)
{
while (complete && cutoff <= complete->item->date) {
- if (verbose)
+ if (args.verbose)
fprintf(stderr, "Marking %s as complete\n",
sha1_to_hex(complete->item->object.sha1));
pop_most_recent_commit(&complete, COMPLETE);
struct ref *ref, *next;
struct ref *fastarray[32];
- if (nr_match && !fetch_all) {
+ if (nr_match && !args.fetch_all) {
if (ARRAY_SIZE(fastarray) < nr_match)
return_refs = xcalloc(nr_match, sizeof(struct ref *));
else {
if (!memcmp(ref->name, "refs/", 5) &&
check_ref_format(ref->name + 5))
; /* trash */
- else if (fetch_all &&
- (!depth || prefixcmp(ref->name, "refs/tags/") )) {
+ else if (args.fetch_all &&
+ (!args.depth || prefixcmp(ref->name, "refs/tags/") )) {
*newtail = ref;
ref->next = NULL;
newtail = &ref->next;
free(ref);
}
- if (!fetch_all) {
+ if (!args.fetch_all) {
int i;
for (i = 0; i < nr_match; i++) {
ref = return_refs[i];
int retval;
unsigned long cutoff = 0;
- track_object_refs = 0;
save_commit_buffer = 0;
for (ref = *refs; ref; ref = ref->next) {
}
}
- if (!depth) {
+ if (!args.depth) {
for_each_ref(mark_complete, NULL);
if (cutoff)
mark_recent_complete_commits(cutoff);
o = lookup_object(remote);
if (!o || !(o->flags & COMPLETE)) {
retval = 0;
- if (!verbose)
+ if (!args.verbose)
continue;
fprintf(stderr,
"want %s (%s)\n", sha1_to_hex(remote),
}
hashcpy(ref->new_sha1, local);
- if (!verbose)
+ if (!args.verbose)
continue;
fprintf(stderr,
"already have %s (%s)\n", sha1_to_hex(remote),
return retval;
}
-static pid_t setup_sideband(int fd[2], int xd[2])
+static int sideband_demux(int fd, void *data)
{
- pid_t side_pid;
+ int *xd = data;
- if (!use_sideband) {
- fd[0] = xd[0];
- fd[1] = xd[1];
- return 0;
- }
- /* xd[] is talking with upload-pack; subprocess reads from
- * xd[0], spits out band#2 to stderr, and feeds us band#1
- * through our fd[0].
- */
- if (pipe(fd) < 0)
- die("fetch-pack: unable to set up pipe");
- side_pid = fork();
- if (side_pid < 0)
- die("fetch-pack: unable to fork off sideband demultiplexer");
- if (!side_pid) {
- /* subprocess */
- close(fd[0]);
- if (xd[0] != xd[1])
- close(xd[1]);
- if (recv_sideband("fetch-pack", xd[0], fd[1], 2))
- exit(1);
- exit(0);
- }
- close(xd[0]);
- close(fd[1]);
- fd[1] = xd[1];
- return side_pid;
+ return recv_sideband("fetch-pack", xd[0], fd, 2);
}
-static int get_pack(int xd[2])
+static int get_pack(int xd[2], char **pack_lockfile)
{
- int status;
- pid_t pid, side_pid;
- int fd[2];
+ struct async demux;
const char *argv[20];
char keep_arg[256];
char hdr_arg[256];
const char **av;
- int do_keep = keep_pack;
-
- side_pid = setup_sideband(fd, xd);
+ int do_keep = args.keep_pack;
+ struct child_process cmd;
+
+ memset(&demux, 0, sizeof(demux));
+ if (use_sideband) {
+ /* xd[] is talking with upload-pack; subprocess reads from
+ * xd[0], spits out band#2 to stderr, and feeds us band#1
+ * through demux->out.
+ */
+ demux.proc = sideband_demux;
+ demux.data = xd;
+ if (start_async(&demux))
+ die("fetch-pack: unable to fork off sideband"
+ " demultiplexer");
+ }
+ else
+ demux.out = xd[0];
+ memset(&cmd, 0, sizeof(cmd));
+ cmd.argv = argv;
av = argv;
*hdr_arg = 0;
- if (unpack_limit) {
+ if (!args.keep_pack && unpack_limit) {
struct pack_header header;
- if (read_pack_header(fd[0], &header))
+ if (read_pack_header(demux.out, &header))
die("protocol error: bad pack header");
- snprintf(hdr_arg, sizeof(hdr_arg), "--pack_header=%u,%u",
+ snprintf(hdr_arg, sizeof(hdr_arg),
+ "--pack_header=%"PRIu32",%"PRIu32,
ntohl(header.hdr_version), ntohl(header.hdr_entries));
if (ntohl(header.hdr_entries) < unpack_limit)
do_keep = 0;
}
if (do_keep) {
+ if (pack_lockfile)
+ cmd.out = -1;
*av++ = "index-pack";
*av++ = "--stdin";
- if (!quiet && !no_progress)
+ if (!args.quiet && !args.no_progress)
*av++ = "-v";
- if (use_thin_pack)
+ if (args.use_thin_pack)
*av++ = "--fix-thin";
- if (keep_pack > 1 || unpack_limit) {
+ if (args.lock_pack || unpack_limit) {
int s = sprintf(keep_arg,
"--keep=fetch-pack %d on ", getpid());
if (gethostname(keep_arg + s, sizeof(keep_arg) - s))
}
else {
*av++ = "unpack-objects";
- if (quiet)
+ if (args.quiet)
*av++ = "-q";
}
if (*hdr_arg)
*av++ = hdr_arg;
*av++ = NULL;
- pid = fork();
- if (pid < 0)
+ cmd.in = demux.out;
+ cmd.git_cmd = 1;
+ if (start_command(&cmd))
die("fetch-pack: unable to fork off %s", argv[0]);
- if (!pid) {
- dup2(fd[0], 0);
- close(fd[0]);
- close(fd[1]);
- execv_git_cmd(argv);
- die("%s exec failed", argv[0]);
- }
- close(fd[0]);
- close(fd[1]);
- while (waitpid(pid, &status, 0) < 0) {
- if (errno != EINTR)
- die("waiting for %s: %s", argv[0], strerror(errno));
- }
- if (WIFEXITED(status)) {
- int code = WEXITSTATUS(status);
- if (code)
- die("%s died with error code %d", argv[0], code);
- return 0;
- }
- if (WIFSIGNALED(status)) {
- int sig = WTERMSIG(status);
- die("%s died of signal %d", argv[0], sig);
+ if (do_keep && pack_lockfile) {
+ *pack_lockfile = index_pack_lockfile(cmd.out);
+ close(cmd.out);
}
- die("%s died of unnatural causes %d", argv[0], status);
+
+ if (finish_command(&cmd))
+ die("%s failed", argv[0]);
+ if (use_sideband && finish_async(&demux))
+ die("error in sideband demultiplexer");
+ return 0;
}
-static struct ref *do_fetch_pack(int fd[2], int nr_match, char **match)
+static struct ref *do_fetch_pack(int fd[2],
+ const struct ref *orig_ref,
+ int nr_match,
+ char **match,
+ char **pack_lockfile)
{
- struct ref *ref;
+ struct ref *ref = copy_ref_list(orig_ref);
unsigned char sha1[20];
- get_remote_heads(fd[0], &ref, 0, NULL, 0);
if (is_repository_shallow() && !server_supports("shallow"))
die("Server does not support shallow clients");
if (server_supports("multi_ack")) {
- if (verbose)
+ if (args.verbose)
fprintf(stderr, "Server supports multi_ack\n");
multi_ack = 1;
}
if (server_supports("side-band-64k")) {
- if (verbose)
+ if (args.verbose)
fprintf(stderr, "Server supports side-band-64k\n");
use_sideband = 2;
}
else if (server_supports("side-band")) {
- if (verbose)
+ if (args.verbose)
fprintf(stderr, "Server supports side-band\n");
use_sideband = 1;
}
- if (!ref) {
- packet_flush(fd[1]);
- die("no matching remote head");
- }
if (everything_local(&ref, nr_match, match)) {
packet_flush(fd[1]);
goto all_done;
}
if (find_common(fd, sha1, ref) < 0)
- if (keep_pack != 1)
+ if (!args.keep_pack)
/* When cloning, it is not unusual to have
* no common commit.
*/
fprintf(stderr, "warning: no common commits\n");
- if (get_pack(fd))
+ if (get_pack(fd, pack_lockfile))
die("git-fetch-pack: fetch failed.");
all_done:
heads[dst] = heads[src];
dst++;
}
- heads[dst] = 0;
return dst;
}
-static int fetch_pack_config(const char *var, const char *value)
+static int fetch_pack_config(const char *var, const char *value, void *cb)
{
if (strcmp(var, "fetch.unpacklimit") == 0) {
fetch_unpack_limit = git_config_int(var, value);
return 0;
}
- return git_default_config(var, value);
+ return git_default_config(var, value, cb);
}
static struct lock_file lock;
-void setup_fetch_pack(struct fetch_pack_args *args)
+static void fetch_pack_setup(void)
{
- uploadpack = args->uploadpack;
- quiet = args->quiet;
- keep_pack = args->keep_pack;
- if (args->unpacklimit >= 0)
- unpack_limit = args->unpacklimit;
- if (args->keep_pack)
- unpack_limit = 0;
- use_thin_pack = args->use_thin_pack;
- fetch_all = args->fetch_all;
- verbose = args->verbose;
- depth = args->depth;
- no_progress = args->no_progress;
+ static int did_setup;
+ if (did_setup)
+ return;
+ git_config(fetch_pack_config, NULL);
+ if (0 <= transfer_unpack_limit)
+ unpack_limit = transfer_unpack_limit;
+ else if (0 <= fetch_unpack_limit)
+ unpack_limit = fetch_unpack_limit;
+ did_setup = 1;
}
int cmd_fetch_pack(int argc, const char **argv, const char *prefix)
{
int i, ret, nr_heads;
- struct ref *ref;
+ struct ref *ref = NULL;
char *dest = NULL, **heads;
-
- git_config(fetch_pack_config);
-
- if (0 <= transfer_unpack_limit)
- unpack_limit = transfer_unpack_limit;
- else if (0 <= fetch_unpack_limit)
- unpack_limit = fetch_unpack_limit;
+ int fd[2];
+ struct child_process *conn;
nr_heads = 0;
heads = NULL;
if (*arg == '-') {
if (!prefixcmp(arg, "--upload-pack=")) {
- uploadpack = arg + 14;
+ args.uploadpack = arg + 14;
continue;
}
if (!prefixcmp(arg, "--exec=")) {
- uploadpack = arg + 7;
+ args.uploadpack = arg + 7;
continue;
}
if (!strcmp("--quiet", arg) || !strcmp("-q", arg)) {
- quiet = 1;
+ args.quiet = 1;
continue;
}
if (!strcmp("--keep", arg) || !strcmp("-k", arg)) {
- keep_pack++;
- unpack_limit = 0;
+ args.lock_pack = args.keep_pack;
+ args.keep_pack = 1;
continue;
}
if (!strcmp("--thin", arg)) {
- use_thin_pack = 1;
+ args.use_thin_pack = 1;
+ continue;
+ }
+ if (!strcmp("--include-tag", arg)) {
+ args.include_tag = 1;
continue;
}
if (!strcmp("--all", arg)) {
- fetch_all = 1;
+ args.fetch_all = 1;
continue;
}
if (!strcmp("-v", arg)) {
- verbose = 1;
+ args.verbose = 1;
continue;
}
if (!prefixcmp(arg, "--depth=")) {
- depth = strtol(arg + 8, NULL, 0);
+ args.depth = strtol(arg + 8, NULL, 0);
continue;
}
if (!strcmp("--no-progress", arg)) {
- no_progress = 1;
+ args.no_progress = 1;
continue;
}
usage(fetch_pack_usage);
if (!dest)
usage(fetch_pack_usage);
- ref = fetch_pack(dest, nr_heads, heads);
+ conn = git_connect(fd, (char *)dest, args.uploadpack,
+ args.verbose ? CONNECT_VERBOSE : 0);
+ if (conn) {
+ get_remote_heads(fd[0], &ref, 0, NULL, 0);
+ ref = fetch_pack(&args, fd, conn, ref, dest, nr_heads, heads, NULL);
+ close(fd[0]);
+ close(fd[1]);
+ if (finish_connect(conn))
+ ref = NULL;
+ } else {
+ ref = NULL;
+ }
ret = !ref;
+ if (!ret && nr_heads) {
+ /* If the heads to pull were given, we should have
+ * consumed all of them by matching the remote.
+ * Otherwise, 'git-fetch remote no-such-ref' would
+ * silently succeed without issuing an error.
+ */
+ for (i = 0; i < nr_heads; i++)
+ if (heads[i] && heads[i][0]) {
+ error("no such remote ref %s", heads[i]);
+ ret = 1;
+ }
+ }
while (ref) {
printf("%s %s\n",
sha1_to_hex(ref->old_sha1), ref->name);
return ret;
}
-struct ref *fetch_pack(const char *dest, int nr_heads, char **heads)
+struct ref *fetch_pack(struct fetch_pack_args *my_args,
+ int fd[], struct child_process *conn,
+ const struct ref *ref,
+ const char *dest,
+ int nr_heads,
+ char **heads,
+ char **pack_lockfile)
{
- int i, ret;
- int fd[2];
- pid_t pid;
- struct ref *ref;
struct stat st;
+ struct ref *ref_cpy;
- if (depth > 0) {
+ fetch_pack_setup();
+ memcpy(&args, my_args, sizeof(args));
+ if (args.depth > 0) {
if (stat(git_path("shallow"), &st))
st.st_mtime = 0;
}
- printf("connect to %s\n", dest);
-
- pid = git_connect(fd, (char *)dest, uploadpack,
- verbose ? CONNECT_VERBOSE : 0);
- if (pid < 0)
- return NULL;
if (heads && nr_heads)
nr_heads = remove_duplicates(nr_heads, heads);
- ref = do_fetch_pack(fd, nr_heads, heads);
- close(fd[0]);
- close(fd[1]);
- ret = finish_connect(pid);
-
- if (!ret && nr_heads) {
- /* If the heads to pull were given, we should have
- * consumed all of them by matching the remote.
- * Otherwise, 'git-fetch remote no-such-ref' would
- * silently succeed without issuing an error.
- */
- for (i = 0; i < nr_heads; i++)
- if (heads[i] && heads[i][0]) {
- error("no such remote ref %s", heads[i]);
- ret = 1;
- }
+ if (!ref) {
+ packet_flush(fd[1]);
+ die("no matching remote head");
}
+ ref_cpy = do_fetch_pack(fd, ref, nr_heads, heads, pack_lockfile);
- if (!ret && depth > 0) {
+ if (args.depth > 0) {
struct cache_time mtime;
char *shallow = git_path("shallow");
int fd;
unlink(shallow);
rollback_lock_file(&lock);
} else {
- close(fd);
commit_lock_file(&lock);
}
}
- if (ret)
- ref = NULL;
-
- return ref;
+ reprepare_packed_git();
+ return ref_cpy;
}