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Diffstat (limited to 'upload-pack.c')
-rw-r--r--upload-pack.c237
1 files changed, 158 insertions, 79 deletions
diff --git a/upload-pack.c b/upload-pack.c
index bdbd67bc1d..0c87bc00f0 100644
--- a/upload-pack.c
+++ b/upload-pack.c
@@ -11,7 +11,7 @@
#include "list-objects.h"
#include "run-command.h"
-static const char upload_pack_usage[] = "git-upload-pack [--strict] [--timeout=nn] <dir>";
+static const char upload_pack_usage[] = "git upload-pack [--strict] [--timeout=<n>] <dir>";
/* bits #0..7 in revision.h, #8..10 in commit.c */
#define THEY_HAVE (1u << 11)
@@ -28,15 +28,19 @@ static unsigned long oldest_have;
static int multi_ack, nr_our_refs;
static int use_thin_pack, use_ofs_delta, use_include_tag;
-static int no_progress;
+static int no_progress, daemon_mode;
+static int shallow_nr;
static struct object_array have_obj;
static struct object_array want_obj;
+static struct object_array extra_edge_obj;
static unsigned int timeout;
/* 0 for no sideband,
* otherwise maximum packet size (up to 65520 bytes).
*/
static int use_sideband;
static int debug_fd;
+static int advertise_refs;
+static int stateless_rpc;
static void reset_timeout(void)
{
@@ -66,7 +70,7 @@ static ssize_t send_client_data(int fd, const char *data, ssize_t sz)
}
static FILE *pack_pipe = NULL;
-static void show_commit(struct commit *commit)
+static void show_commit(struct commit *commit, void *data)
{
if (commit->object.flags & BOUNDARY)
fputc('-', pack_pipe);
@@ -78,11 +82,12 @@ static void show_commit(struct commit *commit)
commit->buffer = NULL;
}
-static void show_object(struct object *obj, const char *name)
+static void show_object(struct object *obj, const struct name_path *path, const char *component)
{
/* An object with name "foo\n0000000..." can be used to
* confuse downstream git-pack-objects very badly.
*/
+ const char *name = path_name(path, component);
const char *ep = strchr(name, '\n');
if (ep) {
fprintf(pack_pipe, "%s %.*s\n", sha1_to_hex(obj->sha1),
@@ -92,6 +97,7 @@ static void show_object(struct object *obj, const char *name)
else
fprintf(pack_pipe, "%s %s\n",
sha1_to_hex(obj->sha1), name);
+ free((char *)name);
}
static void show_edge(struct commit *commit)
@@ -99,14 +105,12 @@ static void show_edge(struct commit *commit)
fprintf(pack_pipe, "-%s\n", sha1_to_hex(commit->object.sha1));
}
-static int do_rev_list(int fd, void *create_full_pack)
+static int do_rev_list(int in, int out, void *user_data)
{
int i;
struct rev_info revs;
- pack_pipe = fdopen(fd, "w");
- if (create_full_pack)
- use_thin_pack = 0; /* no point doing it */
+ pack_pipe = xfdopen(out, "w");
init_revisions(&revs, NULL);
revs.tag_objects = 1;
revs.tree_objects = 1;
@@ -114,27 +118,26 @@ static int do_rev_list(int fd, void *create_full_pack)
if (use_thin_pack)
revs.edge_hint = 1;
- if (create_full_pack) {
- const char *args[] = {"rev-list", "--all", NULL};
- setup_revisions(2, args, &revs, NULL);
- } else {
- for (i = 0; i < want_obj.nr; i++) {
- struct object *o = want_obj.objects[i].item;
- /* why??? */
- o->flags &= ~UNINTERESTING;
- add_pending_object(&revs, o, NULL);
- }
- for (i = 0; i < have_obj.nr; i++) {
- struct object *o = have_obj.objects[i].item;
- o->flags |= UNINTERESTING;
- add_pending_object(&revs, o, NULL);
- }
- setup_revisions(0, NULL, &revs, NULL);
+ for (i = 0; i < want_obj.nr; i++) {
+ struct object *o = want_obj.objects[i].item;
+ /* why??? */
+ o->flags &= ~UNINTERESTING;
+ add_pending_object(&revs, o, NULL);
+ }
+ for (i = 0; i < have_obj.nr; i++) {
+ struct object *o = have_obj.objects[i].item;
+ o->flags |= UNINTERESTING;
+ add_pending_object(&revs, o, NULL);
}
+ setup_revisions(0, NULL, &revs, NULL);
if (prepare_revision_walk(&revs))
die("revision walk setup failed");
mark_edges_uninteresting(revs.commits, &revs, show_edge);
- traverse_commit_list(&revs, show_commit, show_object);
+ if (use_thin_pack)
+ for (i = 0; i < extra_edge_obj.nr; i++)
+ fprintf(pack_pipe, "-%s\n", sha1_to_hex(
+ extra_edge_obj.objects[i].item->sha1));
+ traverse_commit_list(&revs, show_commit, show_object, NULL);
fflush(pack_pipe);
fclose(pack_pipe);
return 0;
@@ -153,13 +156,22 @@ static void create_pack_file(void)
const char *argv[10];
int arg = 0;
- rev_list.proc = do_rev_list;
- /* .data is just a boolean: any non-NULL value will do */
- rev_list.data = create_full_pack ? &rev_list : NULL;
- if (start_async(&rev_list))
- die("git upload-pack: unable to fork git-rev-list");
+ if (shallow_nr) {
+ memset(&rev_list, 0, sizeof(rev_list));
+ rev_list.proc = do_rev_list;
+ rev_list.out = -1;
+ if (start_async(&rev_list))
+ die("git upload-pack: unable to fork git-rev-list");
+ argv[arg++] = "pack-objects";
+ } else {
+ argv[arg++] = "pack-objects";
+ argv[arg++] = "--revs";
+ if (create_full_pack)
+ argv[arg++] = "--all";
+ else if (use_thin_pack)
+ argv[arg++] = "--thin";
+ }
- argv[arg++] = "pack-objects";
argv[arg++] = "--stdout";
if (!no_progress)
argv[arg++] = "--progress";
@@ -170,7 +182,7 @@ static void create_pack_file(void)
argv[arg++] = NULL;
memset(&pack_objects, 0, sizeof(pack_objects));
- pack_objects.in = rev_list.out; /* start_command closes it */
+ pack_objects.in = shallow_nr ? rev_list.out : -1;
pack_objects.out = -1;
pack_objects.err = -1;
pack_objects.git_cmd = 1;
@@ -179,6 +191,24 @@ static void create_pack_file(void)
if (start_command(&pack_objects))
die("git upload-pack: unable to fork git-pack-objects");
+ /* pass on revisions we (don't) want */
+ if (!shallow_nr) {
+ FILE *pipe_fd = xfdopen(pack_objects.in, "w");
+ if (!create_full_pack) {
+ int i;
+ for (i = 0; i < want_obj.nr; i++)
+ fprintf(pipe_fd, "%s\n", sha1_to_hex(want_obj.objects[i].item->sha1));
+ fprintf(pipe_fd, "--not\n");
+ for (i = 0; i < have_obj.nr; i++)
+ fprintf(pipe_fd, "%s\n", sha1_to_hex(have_obj.objects[i].item->sha1));
+ }
+
+ fprintf(pipe_fd, "\n");
+ fflush(pipe_fd);
+ fclose(pipe_fd);
+ }
+
+
/* We read from pack_objects.err to capture stderr output for
* progress bar, and pack_objects.out to capture the pack data.
*/
@@ -216,6 +246,23 @@ static void create_pack_file(void)
}
continue;
}
+ if (0 <= pe && (pfd[pe].revents & (POLLIN|POLLHUP))) {
+ /* Status ready; we ship that in the side-band
+ * or dump to the standard error.
+ */
+ sz = xread(pack_objects.err, progress,
+ sizeof(progress));
+ if (0 < sz)
+ send_client_data(2, progress, sz);
+ else if (sz == 0) {
+ close(pack_objects.err);
+ pack_objects.err = -1;
+ }
+ else
+ goto fail;
+ /* give priority to status messages */
+ continue;
+ }
if (0 <= pu && (pfd[pu].revents & (POLLIN|POLLHUP))) {
/* Data ready; we keep the last byte to ourselves
* in case we detect broken rev-list, so that we
@@ -235,7 +282,7 @@ static void create_pack_file(void)
sz = xread(pack_objects.out, cp,
sizeof(data) - outsz);
if (0 < sz)
- ;
+ ;
else if (sz == 0) {
close(pack_objects.out);
pack_objects.out = -1;
@@ -253,28 +300,13 @@ static void create_pack_file(void)
if (sz < 0)
goto fail;
}
- if (0 <= pe && (pfd[pe].revents & (POLLIN|POLLHUP))) {
- /* Status ready; we ship that in the side-band
- * or dump to the standard error.
- */
- sz = xread(pack_objects.err, progress,
- sizeof(progress));
- if (0 < sz)
- send_client_data(2, progress, sz);
- else if (sz == 0) {
- close(pack_objects.err);
- pack_objects.err = -1;
- }
- else
- goto fail;
- }
}
if (finish_command(&pack_objects)) {
error("git upload-pack: git-pack-objects died with error.");
goto fail;
}
- if (finish_async(&rev_list))
+ if (shallow_nr && finish_async(&rev_list))
goto fail; /* error was already reported */
/* flush the data */
@@ -334,7 +366,7 @@ static int reachable(struct commit *want)
{
struct commit_list *work = NULL;
- insert_by_date(want, &work);
+ commit_list_insert_by_date(want, &work);
while (work) {
struct commit_list *list = work->next;
struct commit *commit = work->item;
@@ -355,7 +387,7 @@ static int reachable(struct commit *want)
for (list = commit->parents; list; list = list->next) {
struct commit *parent = list->item;
if (!(parent->object.flags & REACHABLE))
- insert_by_date(parent, &work);
+ commit_list_insert_by_date(parent, &work);
}
}
want->object.flags |= REACHABLE;
@@ -396,37 +428,41 @@ static int get_common_commits(void)
{
static char line[1000];
unsigned char sha1[20];
- char hex[41], last_hex[41];
- int len;
+ char last_hex[41];
save_commit_buffer = 0;
- for(;;) {
- len = packet_read_line(0, line, sizeof(line));
+ for (;;) {
+ int len = packet_read_line(0, line, sizeof(line));
reset_timeout();
if (!len) {
if (have_obj.nr == 0 || multi_ack)
packet_write(1, "NAK\n");
+ if (stateless_rpc)
+ exit(0);
continue;
}
- len = strip(line, len);
+ strip(line, len);
if (!prefixcmp(line, "have ")) {
switch (got_sha1(line+5, sha1)) {
case -1: /* they have what we do not */
- if (multi_ack && ok_to_give_up())
- packet_write(1, "ACK %s continue\n",
- sha1_to_hex(sha1));
+ if (multi_ack && ok_to_give_up()) {
+ const char *hex = sha1_to_hex(sha1);
+ if (multi_ack == 2)
+ packet_write(1, "ACK %s ready\n", hex);
+ else
+ packet_write(1, "ACK %s continue\n", hex);
+ }
break;
default:
- memcpy(hex, sha1_to_hex(sha1), 41);
- if (multi_ack) {
- const char *msg = "ACK %s continue\n";
- packet_write(1, msg, hex);
- memcpy(last_hex, hex, 41);
- }
+ memcpy(last_hex, sha1_to_hex(sha1), 41);
+ if (multi_ack == 2)
+ packet_write(1, "ACK %s common\n", last_hex);
+ else if (multi_ack)
+ packet_write(1, "ACK %s continue\n", last_hex);
else if (have_obj.nr == 1)
- packet_write(1, "ACK %s\n", hex);
+ packet_write(1, "ACK %s\n", last_hex);
break;
}
continue;
@@ -446,12 +482,13 @@ static int get_common_commits(void)
static void receive_needs(void)
{
- struct object_array shallows = {0, 0, NULL};
+ struct object_array shallows = OBJECT_ARRAY_INIT;
static char line[1000];
int len, depth = 0;
+ shallow_nr = 0;
if (debug_fd)
- write_in_full(debug_fd, "#S\n", 3);
+ write_str_in_full(debug_fd, "#S\n");
for (;;) {
struct object *o;
unsigned char sha1_buf[20];
@@ -465,7 +502,6 @@ static void receive_needs(void)
if (!prefixcmp(line, "shallow ")) {
unsigned char sha1[20];
struct object *object;
- use_thin_pack = 0;
if (get_sha1(line + 8, sha1))
die("invalid shallow line: %s", line);
object = parse_object(sha1);
@@ -477,7 +513,6 @@ static void receive_needs(void)
}
if (!prefixcmp(line, "deepen ")) {
char *end;
- use_thin_pack = 0;
depth = strtol(line + 7, &end, 0);
if (end == line + 7 || depth <= 0)
die("Invalid deepen: %s", line);
@@ -487,7 +522,9 @@ static void receive_needs(void)
get_sha1_hex(line+5, sha1_buf))
die("git upload-pack: protocol error, "
"expected to get sha, not '%s'", line);
- if (strstr(line+45, "multi_ack"))
+ if (strstr(line+45, "multi_ack_detailed"))
+ multi_ack = 2;
+ else if (strstr(line+45, "multi_ack"))
multi_ack = 1;
if (strstr(line+45, "thin-pack"))
use_thin_pack = 1;
@@ -512,14 +549,19 @@ static void receive_needs(void)
*/
o = lookup_object(sha1_buf);
if (!o || !(o->flags & OUR_REF))
- die("git upload-pack: not our ref %s", line+5);
+ die("git upload-pack: not our ref %s",
+ sha1_to_hex(sha1_buf));
if (!(o->flags & WANTED)) {
o->flags |= WANTED;
add_object_array(o, NULL, &want_obj);
}
}
if (debug_fd)
- write_in_full(debug_fd, "#E\n", 3);
+ write_str_in_full(debug_fd, "#E\n");
+
+ if (!use_sideband && daemon_mode)
+ no_progress = 1;
+
if (depth == 0 && shallows.nr == 0)
return;
if (depth > 0) {
@@ -533,6 +575,7 @@ static void receive_needs(void)
packet_write(1, "shallow %s",
sha1_to_hex(object->sha1));
register_shallow(object->sha1);
+ shallow_nr++;
}
result = result->next;
}
@@ -555,6 +598,7 @@ static void receive_needs(void)
NULL, &want_obj);
parents = parents->next;
}
+ add_object_array(object, NULL, &extra_edge_obj);
}
/* make sure commit traversal conforms to client */
register_shallow(object->sha1);
@@ -566,6 +610,8 @@ static void receive_needs(void)
for (i = 0; i < shallows.nr; i++)
register_shallow(shallows.objects[i].item->sha1);
}
+
+ shallow_nr += shallows.nr;
free(shallows.objects);
}
@@ -573,7 +619,7 @@ static int send_ref(const char *refname, const unsigned char *sha1, int flag, vo
{
static const char *capabilities = "multi_ack thin-pack side-band"
" side-band-64k ofs-delta shallow no-progress"
- " include-tag";
+ " include-tag multi_ack_detailed";
struct object *o = parse_object(sha1);
if (!o)
@@ -597,12 +643,32 @@ static int send_ref(const char *refname, const unsigned char *sha1, int flag, vo
return 0;
}
+static int mark_our_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
+{
+ struct object *o = parse_object(sha1);
+ if (!o)
+ die("git upload-pack: cannot find object %s:", sha1_to_hex(sha1));
+ if (!(o->flags & OUR_REF)) {
+ o->flags |= OUR_REF;
+ nr_our_refs++;
+ }
+ return 0;
+}
+
static void upload_pack(void)
{
- reset_timeout();
- head_ref(send_ref, NULL);
- for_each_ref(send_ref, NULL);
- packet_flush(1);
+ if (advertise_refs || !stateless_rpc) {
+ reset_timeout();
+ head_ref(send_ref, NULL);
+ for_each_ref(send_ref, NULL);
+ packet_flush(1);
+ } else {
+ head_ref(mark_our_ref, NULL);
+ for_each_ref(mark_our_ref, NULL);
+ }
+ if (advertise_refs)
+ return;
+
receive_needs();
if (want_obj.nr) {
get_common_commits();
@@ -616,17 +682,30 @@ int main(int argc, char **argv)
int i;
int strict = 0;
+ packet_trace_identity("upload-pack");
+ git_extract_argv0_path(argv[0]);
+ read_replace_refs = 0;
+
for (i = 1; i < argc; i++) {
char *arg = argv[i];
if (arg[0] != '-')
break;
+ if (!strcmp(arg, "--advertise-refs")) {
+ advertise_refs = 1;
+ continue;
+ }
+ if (!strcmp(arg, "--stateless-rpc")) {
+ stateless_rpc = 1;
+ continue;
+ }
if (!strcmp(arg, "--strict")) {
strict = 1;
continue;
}
if (!prefixcmp(arg, "--timeout=")) {
timeout = atoi(arg+10);
+ daemon_mode = 1;
continue;
}
if (!strcmp(arg, "--")) {
@@ -643,7 +722,7 @@ int main(int argc, char **argv)
dir = argv[i];
if (!enter_repo(dir, strict))
- die("'%s': unable to chdir or not a git archive", dir);
+ die("'%s' does not appear to be a git repository", dir);
if (is_repository_shallow())
die("attempt to fetch/clone from a shallow repository");
if (getenv("GIT_DEBUG_SEND_PACK"))
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-29 19:34:08 +0000