-#include <signal.h>
-#include <sys/wait.h>
-#include <sys/poll.h>
#include "cache.h"
#include "refs.h"
#include "pkt-line.h"
#include "object.h"
#include "commit.h"
#include "exec_cmd.h"
+#include "diff.h"
+#include "revision.h"
+#include "list-objects.h"
static const char upload_pack_usage[] = "git-upload-pack [--strict] [--timeout=nn] <dir>";
#define COMMON_KNOWN (1u << 14)
#define REACHABLE (1u << 15)
+#define SHALLOW (1u << 16)
+#define NOT_SHALLOW (1u << 17)
+#define CLIENT_SHALLOW (1u << 18)
+
static unsigned long oldest_have;
static int multi_ack, nr_our_refs;
/* emergency quit */
fd = 2;
if (fd == 2) {
+ /* XXX: are we happy to lose stuff here? */
xwrite(fd, data, sz);
return sz;
}
return safe_write(fd, data, sz);
}
+FILE *pack_pipe = NULL;
+static void show_commit(struct commit *commit)
+{
+ if (commit->object.flags & BOUNDARY)
+ fputc('-', pack_pipe);
+ if (fputs(sha1_to_hex(commit->object.sha1), pack_pipe) < 0)
+ die("broken output pipe");
+ fputc('\n', pack_pipe);
+ fflush(pack_pipe);
+ free(commit->buffer);
+ commit->buffer = NULL;
+}
+
+static void show_object(struct object_array_entry *p)
+{
+ /* An object with name "foo\n0000000..." can be used to
+ * confuse downstream git-pack-objects very badly.
+ */
+ const char *ep = strchr(p->name, '\n');
+ if (ep) {
+ fprintf(pack_pipe, "%s %.*s\n", sha1_to_hex(p->item->sha1),
+ (int) (ep - p->name),
+ p->name);
+ }
+ else
+ fprintf(pack_pipe, "%s %s\n",
+ sha1_to_hex(p->item->sha1), p->name);
+}
+
+static void show_edge(struct commit *commit)
+{
+ fprintf(pack_pipe, "-%s\n", sha1_to_hex(commit->object.sha1));
+}
+
static void create_pack_file(void)
{
/* Pipes between rev-list to pack-objects, pack-objects to us
if (!pid_rev_list) {
int i;
- int args;
- const char **argv;
- const char **p;
- char *buf;
+ struct rev_info revs;
- if (create_full_pack) {
- args = 10;
- use_thin_pack = 0; /* no point doing it */
- }
- else
- args = have_obj.nr + want_obj.nr + 5;
- p = xmalloc(args * sizeof(char *));
- argv = (const char **) p;
- buf = xmalloc(args * 45);
+ pack_pipe = fdopen(lp_pipe[1], "w");
- dup2(lp_pipe[1], 1);
- close(0);
- close(lp_pipe[0]);
- close(lp_pipe[1]);
- *p++ = "rev-list";
- *p++ = use_thin_pack ? "--objects-edge" : "--objects";
if (create_full_pack)
- *p++ = "--all";
- else {
+ use_thin_pack = 0; /* no point doing it */
+ init_revisions(&revs, NULL);
+ revs.tag_objects = 1;
+ revs.tree_objects = 1;
+ revs.blob_objects = 1;
+ 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;
- *p++ = buf;
- memcpy(buf, sha1_to_hex(o->sha1), 41);
- buf += 41;
+ /* why??? */
+ o->flags &= ~UNINTERESTING;
+ add_pending_object(&revs, o, NULL);
}
- }
- if (!create_full_pack)
for (i = 0; i < have_obj.nr; i++) {
struct object *o = have_obj.objects[i].item;
- *p++ = buf;
- *buf++ = '^';
- memcpy(buf, sha1_to_hex(o->sha1), 41);
- buf += 41;
+ o->flags |= UNINTERESTING;
+ add_pending_object(&revs, o, NULL);
}
- *p++ = NULL;
- execv_git_cmd(argv);
- die("git-upload-pack: unable to exec git-rev-list");
+ setup_revisions(0, NULL, &revs, NULL);
+ }
+ prepare_revision_walk(&revs);
+ mark_edges_uninteresting(revs.commits, &revs, show_edge);
+ traverse_commit_list(&revs, show_commit, show_object);
+ exit(0);
}
if (pipe(pu_pipe) < 0)
*cp++ = buffered;
outsz++;
}
- sz = read(pu_pipe[0], cp,
+ sz = xread(pu_pipe[0], cp,
sizeof(data) - outsz);
if (0 < sz)
;
/* Status ready; we ship that in the side-band
* or dump to the standard error.
*/
- sz = read(pe_pipe[0], progress,
+ sz = xread(pe_pipe[0], progress,
sizeof(progress));
if (0 < sz)
send_client_data(2, progress, sz);
static void receive_needs(void)
{
+ struct object_array shallows = {0, 0, NULL};
static char line[1000];
- int len;
+ int len, depth = 0;
for (;;) {
struct object *o;
len = packet_read_line(0, line, sizeof(line));
reset_timeout();
if (!len)
- return;
+ break;
+ if (!strncmp("shallow ", line, 8)) {
+ 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);
+ if (!object)
+ die("did not find object for %s", line);
+ object->flags |= CLIENT_SHALLOW;
+ add_object_array(object, NULL, &shallows);
+ continue;
+ }
+ if (!strncmp("deepen ", line, 7)) {
+ char *end;
+ use_thin_pack = 0;
+ depth = strtol(line + 7, &end, 0);
+ if (end == line + 7 || depth <= 0)
+ die("Invalid deepen: %s", line);
+ continue;
+ }
if (strncmp("want ", line, 5) ||
get_sha1_hex(line+5, sha1_buf))
die("git-upload-pack: protocol error, "
add_object_array(o, NULL, &want_obj);
}
}
+ if (depth == 0 && shallows.nr == 0)
+ return;
+ if (depth > 0) {
+ struct commit_list *result, *backup;
+ int i;
+ backup = result = get_shallow_commits(&want_obj, depth,
+ SHALLOW, NOT_SHALLOW);
+ while (result) {
+ 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);
+ }
+ result = result->next;
+ }
+ free_commit_list(backup);
+ for (i = 0; i < shallows.nr; i++) {
+ struct object *object = shallows.objects[i].item;
+ if (object->flags & NOT_SHALLOW) {
+ struct commit_list *parents;
+ packet_write(1, "unshallow %s",
+ sha1_to_hex(object->sha1));
+ object->flags &= ~CLIENT_SHALLOW;
+ /* make sure the real parents are parsed */
+ unregister_shallow(object->sha1);
+ object->parsed = 0;
+ parse_commit((struct commit *)object);
+ parents = ((struct commit *)object)->parents;
+ while (parents) {
+ add_object_array(&parents->item->object,
+ NULL, &want_obj);
+ parents = parents->next;
+ }
+ }
+ /* make sure commit traversal conforms to client */
+ register_shallow(object->sha1);
+ }
+ packet_flush(1);
+ } else
+ if (shallows.nr > 0) {
+ int i;
+ for (i = 0; i < shallows.nr; i++)
+ register_shallow(shallows.objects[i].item->sha1);
+ }
+ free(shallows.objects);
}
static int send_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
{
- static const char *capabilities = "multi_ack thin-pack side-band side-band-64k ofs-delta";
+ static const char *capabilities = "multi_ack thin-pack side-band"
+ " side-band-64k ofs-delta shallow";
struct object *o = parse_object(sha1);
if (!o)
if (!enter_repo(dir, strict))
die("'%s': unable to chdir or not a git archive", dir);
-
+ if (is_repository_shallow())
+ die("attempt to fetch/clone from a shallow repository");
upload_pack();
return 0;
}