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Diffstat (limited to 'upload-pack.c')
-rw-r--r--upload-pack.c173
1 files changed, 103 insertions, 70 deletions
diff --git a/upload-pack.c b/upload-pack.c
index c989a737f9..b3f6653ffd 100644
--- a/upload-pack.c
+++ b/upload-pack.c
@@ -17,7 +17,7 @@
static const char upload_pack_usage[] = "git upload-pack [--strict] [--timeout=<n>] <dir>";
-/* bits #0..7 in revision.h, #8..10 in commit.c */
+/* Remember to update object flag allocation in object.h */
#define THEY_HAVE (1u << 11)
#define OUR_REF (1u << 12)
#define WANTED (1u << 13)
@@ -35,7 +35,11 @@ static int multi_ack;
static int no_done;
static int use_thin_pack, use_ofs_delta, use_include_tag;
static int no_progress, daemon_mode;
-static int allow_tip_sha1_in_want;
+/* 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 int shallow_nr;
static struct object_array have_obj;
static struct object_array want_obj;
@@ -70,23 +74,29 @@ static ssize_t send_client_data(int fd, const char *data, ssize_t sz)
return sz;
}
+static int write_one_shallow(const struct commit_graft *graft, void *cb_data)
+{
+ FILE *fp = cb_data;
+ if (graft->nr_parent == -1)
+ fprintf(fp, "--shallow %s\n", oid_to_hex(&graft->oid));
+ return 0;
+}
+
static void create_pack_file(void)
{
- struct child_process pack_objects;
+ struct child_process pack_objects = CHILD_PROCESS_INIT;
char data[8193], progress[128];
char abort_msg[] = "aborting due to possible repository "
"corruption on the remote side.";
int buffered = -1;
ssize_t sz;
- const char *argv[12];
+ const char *argv[13];
int i, arg = 0;
FILE *pipe_fd;
- char *shallow_file = NULL;
if (shallow_nr) {
- shallow_file = setup_temporary_shallow();
argv[arg++] = "--shallow-file";
- argv[arg++] = shallow_file;
+ argv[arg++] = "";
}
argv[arg++] = "pack-objects";
argv[arg++] = "--revs";
@@ -94,6 +104,8 @@ static void create_pack_file(void)
argv[arg++] = "--thin";
argv[arg++] = "--stdout";
+ if (shallow_nr)
+ argv[arg++] = "--shallow";
if (!no_progress)
argv[arg++] = "--progress";
if (use_ofs_delta)
@@ -102,7 +114,6 @@ static void create_pack_file(void)
argv[arg++] = "--include-tag";
argv[arg++] = NULL;
- memset(&pack_objects, 0, sizeof(pack_objects));
pack_objects.in = -1;
pack_objects.out = -1;
pack_objects.err = -1;
@@ -114,16 +125,19 @@ static void create_pack_file(void)
pipe_fd = xfdopen(pack_objects.in, "w");
+ if (shallow_nr)
+ for_each_commit_graft(write_one_shallow, pipe_fd);
+
for (i = 0; i < want_obj.nr; i++)
fprintf(pipe_fd, "%s\n",
- sha1_to_hex(want_obj.objects[i].item->sha1));
+ oid_to_hex(&want_obj.objects[i].item->oid));
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));
+ oid_to_hex(&have_obj.objects[i].item->oid));
for (i = 0; i < extra_edge_obj.nr; i++)
fprintf(pipe_fd, "%s\n",
- sha1_to_hex(extra_edge_obj.objects[i].item->sha1));
+ oid_to_hex(&extra_edge_obj.objects[i].item->oid));
fprintf(pipe_fd, "\n");
fflush(pipe_fd);
fclose(pipe_fd);
@@ -158,7 +172,9 @@ static void create_pack_file(void)
if (!pollsize)
break;
- ret = poll(pfd, pollsize, 1000 * keepalive);
+ ret = poll(pfd, pollsize,
+ keepalive < 0 ? -1 : 1000 * keepalive);
+
if (ret < 0) {
if (errno != EINTR) {
error("poll failed, resuming: %s",
@@ -242,11 +258,6 @@ static void create_pack_file(void)
error("git upload-pack: git-pack-objects died with error.");
goto fail;
}
- if (shallow_file) {
- if (*shallow_file)
- unlink(shallow_file);
- free(shallow_file);
- }
/* flush the data */
if (0 <= buffered) {
@@ -305,17 +316,15 @@ static int reachable(struct commit *want)
commit_list_insert_by_date(want, &work);
while (work) {
- struct commit_list *list = work->next;
- struct commit *commit = work->item;
- free(work);
- work = list;
+ struct commit_list *list;
+ struct commit *commit = pop_commit(&work);
if (commit->object.flags & THEY_HAVE) {
want->object.flags |= COMMON_KNOWN;
break;
}
if (!commit->object.parsed)
- parse_object(commit->object.sha1);
+ parse_object(commit->object.oid.hash);
if (commit->object.flags & REACHABLE)
continue;
commit->object.flags |= REACHABLE;
@@ -394,7 +403,7 @@ static int get_common_commits(void)
got_other = 0;
continue;
}
- if (!prefixcmp(line, "have ")) {
+ if (starts_with(line, "have ")) {
switch (got_sha1(line+5, sha1)) {
case -1: /* they have what we do not */
got_other = 1;
@@ -435,8 +444,9 @@ static int get_common_commits(void)
static int is_our_ref(struct object *o)
{
- return o->flags &
- ((allow_tip_sha1_in_want ? HIDDEN_REF : 0) | OUR_REF);
+ int allow_hidden_ref = (allow_unadvertised_object_request &
+ (ALLOW_TIP_SHA1 | ALLOW_REACHABLE_SHA1));
+ return o->flags & ((allow_hidden_ref ? HIDDEN_REF : 0) | OUR_REF);
}
static void check_non_tip(void)
@@ -444,13 +454,17 @@ static void check_non_tip(void)
static const char *argv[] = {
"rev-list", "--stdin", NULL,
};
- static struct child_process cmd;
+ static struct child_process cmd = CHILD_PROCESS_INIT;
struct object *o;
char namebuf[42]; /* ^ + SHA-1 + LF */
int i;
- /* In the normal in-process case non-tip request can never happen */
- if (!stateless_rpc)
+ /*
+ * In the normal in-process case without
+ * uploadpack.allowReachableSHA1InWant,
+ * non-tip requests can never happen.
+ */
+ if (!stateless_rpc && !(allow_unadvertised_object_request & ALLOW_REACHABLE_SHA1))
goto error;
cmd.argv = argv;
@@ -477,7 +491,7 @@ static void check_non_tip(void)
continue;
if (!is_our_ref(o))
continue;
- memcpy(namebuf + 1, sha1_to_hex(o->sha1), 40);
+ memcpy(namebuf + 1, oid_to_hex(&o->oid), GIT_SHA1_HEXSZ);
if (write_in_full(cmd.in, namebuf, 42) < 0)
goto error;
}
@@ -486,7 +500,7 @@ static void check_non_tip(void)
o = want_obj.objects[i].item;
if (is_our_ref(o))
continue;
- memcpy(namebuf, sha1_to_hex(o->sha1), 40);
+ memcpy(namebuf, oid_to_hex(&o->oid), GIT_SHA1_HEXSZ);
if (write_in_full(cmd.in, namebuf, 41) < 0)
goto error;
}
@@ -520,7 +534,7 @@ error:
o = want_obj.objects[i].item;
if (!is_our_ref(o))
die("git upload-pack: not our ref %s",
- sha1_to_hex(o->sha1));
+ oid_to_hex(&o->oid));
}
}
@@ -540,7 +554,7 @@ static void receive_needs(void)
if (!line)
break;
- if (!prefixcmp(line, "shallow ")) {
+ if (starts_with(line, "shallow ")) {
unsigned char sha1[20];
struct object *object;
if (get_sha1_hex(line + 8, sha1))
@@ -556,14 +570,14 @@ static void receive_needs(void)
}
continue;
}
- if (!prefixcmp(line, "deepen ")) {
+ if (starts_with(line, "deepen ")) {
char *end;
depth = strtol(line + 7, &end, 0);
if (end == line + 7 || depth <= 0)
die("Invalid deepen: %s", line);
continue;
}
- if (prefixcmp(line, "want ") ||
+ if (!starts_with(line, "want ") ||
get_sha1_hex(line+5, sha1_buf))
die("git upload-pack: protocol error, "
"expected to get sha, not '%s'", line);
@@ -619,7 +633,7 @@ static void receive_needs(void)
if (depth > 0) {
struct commit_list *result = NULL, *backup = NULL;
int i;
- if (depth == INFINITE_DEPTH)
+ if (depth == INFINITE_DEPTH && !is_repository_shallow())
for (i = 0; i < shallows.nr; i++) {
struct object *object = shallows.objects[i].item;
object->flags |= NOT_SHALLOW;
@@ -632,8 +646,8 @@ static void receive_needs(void)
struct object *object = &result->item->object;
if (!(object->flags & (CLIENT_SHALLOW|NOT_SHALLOW))) {
packet_write(1, "shallow %s",
- sha1_to_hex(object->sha1));
- register_shallow(object->sha1);
+ oid_to_hex(&object->oid));
+ register_shallow(object->oid.hash);
shallow_nr++;
}
result = result->next;
@@ -644,13 +658,12 @@ static void receive_needs(void)
if (object->flags & NOT_SHALLOW) {
struct commit_list *parents;
packet_write(1, "unshallow %s",
- sha1_to_hex(object->sha1));
+ oid_to_hex(&object->oid));
object->flags &= ~CLIENT_SHALLOW;
/* make sure the real parents are parsed */
- unregister_shallow(object->sha1);
+ unregister_shallow(object->oid.hash);
object->parsed = 0;
- if (parse_commit((struct commit *)object))
- die("invalid commit");
+ parse_commit_or_die((struct commit *)object);
parents = ((struct commit *)object)->parents;
while (parents) {
add_object_array(&parents->item->object,
@@ -660,14 +673,14 @@ static void receive_needs(void)
add_object_array(object, NULL, &extra_edge_obj);
}
/* make sure commit traversal conforms to client */
- register_shallow(object->sha1);
+ register_shallow(object->oid.hash);
}
packet_flush(1);
} else
if (shallows.nr > 0) {
int i;
for (i = 0; i < shallows.nr; i++)
- register_shallow(shallows.objects[i].item->sha1);
+ register_shallow(shallows.objects[i].item->oid.hash);
}
shallow_nr += shallows.nr;
@@ -675,20 +688,28 @@ static void receive_needs(void)
}
/* return non-zero if the ref is hidden, otherwise 0 */
-static int mark_our_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
+static int mark_our_ref(const char *refname, const char *refname_full,
+ const struct object_id *oid)
{
- struct object *o = lookup_unknown_object(sha1);
+ struct object *o = lookup_unknown_object(oid->hash);
- if (ref_is_hidden(refname)) {
+ if (ref_is_hidden(refname, refname_full)) {
o->flags |= HIDDEN_REF;
return 1;
}
- if (!o)
- die("git upload-pack: cannot find object %s:", sha1_to_hex(sha1));
o->flags |= OUR_REF;
return 0;
}
+static int check_ref(const char *refname_full, const struct object_id *oid,
+ int flag, void *cb_data)
+{
+ const char *refname = strip_namespace(refname_full);
+
+ mark_our_ref(refname, refname_full, oid);
+ return 0;
+}
+
static void format_symref_info(struct strbuf *buf, struct string_list *symref)
{
struct string_list_item *item;
@@ -699,48 +720,52 @@ static void format_symref_info(struct strbuf *buf, struct string_list *symref)
strbuf_addf(buf, " symref=%s:%s", item->string, (char *)item->util);
}
-static int send_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
+static int send_ref(const char *refname, const struct object_id *oid,
+ int flag, void *cb_data)
{
static const char *capabilities = "multi_ack thin-pack side-band"
" side-band-64k ofs-delta shallow no-progress"
" include-tag multi_ack_detailed";
const char *refname_nons = strip_namespace(refname);
- unsigned char peeled[20];
+ struct object_id peeled;
- if (mark_our_ref(refname, sha1, flag, NULL))
+ if (mark_our_ref(refname_nons, refname, oid))
return 0;
if (capabilities) {
struct strbuf symref_info = STRBUF_INIT;
format_symref_info(&symref_info, cb_data);
- packet_write(1, "%s %s%c%s%s%s%s agent=%s\n",
- sha1_to_hex(sha1), refname_nons,
+ packet_write(1, "%s %s%c%s%s%s%s%s agent=%s\n",
+ oid_to_hex(oid), refname_nons,
0, capabilities,
- allow_tip_sha1_in_want ? " allow-tip-sha1-in-want" : "",
+ (allow_unadvertised_object_request & ALLOW_TIP_SHA1) ?
+ " allow-tip-sha1-in-want" : "",
+ (allow_unadvertised_object_request & ALLOW_REACHABLE_SHA1) ?
+ " allow-reachable-sha1-in-want" : "",
stateless_rpc ? " no-done" : "",
symref_info.buf,
git_user_agent_sanitized());
strbuf_release(&symref_info);
} else {
- packet_write(1, "%s %s\n", sha1_to_hex(sha1), refname_nons);
+ packet_write(1, "%s %s\n", oid_to_hex(oid), refname_nons);
}
capabilities = NULL;
- if (!peel_ref(refname, peeled))
- packet_write(1, "%s %s^{}\n", sha1_to_hex(peeled), refname_nons);
+ if (!peel_ref(refname, peeled.hash))
+ packet_write(1, "%s %s^{}\n", oid_to_hex(&peeled), refname_nons);
return 0;
}
-static int find_symref(const char *refname, const unsigned char *sha1, int flag,
- void *cb_data)
+static int find_symref(const char *refname, const struct object_id *oid,
+ int flag, void *cb_data)
{
const char *symref_target;
struct string_list_item *item;
- unsigned char unused[20];
+ struct object_id unused;
if ((flag & REF_ISSYMREF) == 0)
return 0;
- symref_target = resolve_ref_unsafe(refname, unused, 0, &flag);
+ symref_target = resolve_ref_unsafe(refname, 0, unused.hash, &flag);
if (!symref_target || (flag & REF_ISSYMREF) == 0)
die("'%s' is a symref but it is not?", refname);
item = string_list_append(cb_data, refname);
@@ -758,10 +783,11 @@ static void upload_pack(void)
reset_timeout();
head_ref_namespaced(send_ref, &symref);
for_each_namespaced_ref(send_ref, &symref);
+ advertise_shallow_grafts(1);
packet_flush(1);
} else {
- head_ref_namespaced(mark_our_ref, NULL);
- for_each_namespaced_ref(mark_our_ref, NULL);
+ head_ref_namespaced(check_ref, NULL);
+ for_each_namespaced_ref(check_ref, NULL);
}
string_list_clear(&symref, 1);
if (advertise_refs)
@@ -776,9 +802,17 @@ static void upload_pack(void)
static int upload_pack_config(const char *var, const char *value, void *unused)
{
- if (!strcmp("uploadpack.allowtipsha1inwant", var))
- allow_tip_sha1_in_want = git_config_bool(var, value);
- else if (!strcmp("uploadpack.keepalive", var)) {
+ if (!strcmp("uploadpack.allowtipsha1inwant", var)) {
+ if (git_config_bool(var, value))
+ allow_unadvertised_object_request |= ALLOW_TIP_SHA1;
+ else
+ allow_unadvertised_object_request &= ~ALLOW_TIP_SHA1;
+ } else if (!strcmp("uploadpack.allowreachablesha1inwant", var)) {
+ if (git_config_bool(var, value))
+ allow_unadvertised_object_request |= ALLOW_REACHABLE_SHA1;
+ else
+ allow_unadvertised_object_request &= ~ALLOW_REACHABLE_SHA1;
+ } else if (!strcmp("uploadpack.keepalive", var)) {
keepalive = git_config_int(var, value);
if (!keepalive)
keepalive = -1;
@@ -796,7 +830,7 @@ int main(int argc, char **argv)
packet_trace_identity("upload-pack");
git_extract_argv0_path(argv[0]);
- read_replace_refs = 0;
+ check_replace_refs = 0;
for (i = 1; i < argc; i++) {
char *arg = argv[i];
@@ -815,7 +849,7 @@ int main(int argc, char **argv)
strict = 1;
continue;
}
- if (!prefixcmp(arg, "--timeout=")) {
+ if (starts_with(arg, "--timeout=")) {
timeout = atoi(arg+10);
daemon_mode = 1;
continue;
@@ -835,8 +869,7 @@ int main(int argc, char **argv)
if (!enter_repo(dir, strict))
die("'%s' does not appear to be a git repository", dir);
- if (is_repository_shallow())
- die("attempt to fetch/clone from a shallow repository");
+
git_config(upload_pack_config, NULL);
upload_pack();
return 0;
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-05 00:31:52 +0000