upload-pack.con commit i18n: git-merge "You have not concluded your merge" messages (2ce216e)
   1#include "cache.h"
   2#include "refs.h"
   3#include "pkt-line.h"
   4#include "sideband.h"
   5#include "tag.h"
   6#include "object.h"
   7#include "commit.h"
   8#include "exec_cmd.h"
   9#include "diff.h"
  10#include "revision.h"
  11#include "list-objects.h"
  12#include "run-command.h"
  13
  14static const char upload_pack_usage[] = "git upload-pack [--strict] [--timeout=<n>] <dir>";
  15
  16/* bits #0..7 in revision.h, #8..10 in commit.c */
  17#define THEY_HAVE       (1u << 11)
  18#define OUR_REF         (1u << 12)
  19#define WANTED          (1u << 13)
  20#define COMMON_KNOWN    (1u << 14)
  21#define REACHABLE       (1u << 15)
  22
  23#define SHALLOW         (1u << 16)
  24#define NOT_SHALLOW     (1u << 17)
  25#define CLIENT_SHALLOW  (1u << 18)
  26
  27static unsigned long oldest_have;
  28
  29static int multi_ack, nr_our_refs;
  30static int use_thin_pack, use_ofs_delta, use_include_tag;
  31static int no_progress, daemon_mode;
  32static int shallow_nr;
  33static struct object_array have_obj;
  34static struct object_array want_obj;
  35static struct object_array extra_edge_obj;
  36static unsigned int timeout;
  37/* 0 for no sideband,
  38 * otherwise maximum packet size (up to 65520 bytes).
  39 */
  40static int use_sideband;
  41static int debug_fd;
  42static int advertise_refs;
  43static int stateless_rpc;
  44
  45static void reset_timeout(void)
  46{
  47        alarm(timeout);
  48}
  49
  50static int strip(char *line, int len)
  51{
  52        if (len && line[len-1] == '\n')
  53                line[--len] = 0;
  54        return len;
  55}
  56
  57static ssize_t send_client_data(int fd, const char *data, ssize_t sz)
  58{
  59        if (use_sideband)
  60                return send_sideband(1, fd, data, sz, use_sideband);
  61        if (fd == 3)
  62                /* emergency quit */
  63                fd = 2;
  64        if (fd == 2) {
  65                /* XXX: are we happy to lose stuff here? */
  66                xwrite(fd, data, sz);
  67                return sz;
  68        }
  69        return safe_write(fd, data, sz);
  70}
  71
  72static FILE *pack_pipe = NULL;
  73static void show_commit(struct commit *commit, void *data)
  74{
  75        if (commit->object.flags & BOUNDARY)
  76                fputc('-', pack_pipe);
  77        if (fputs(sha1_to_hex(commit->object.sha1), pack_pipe) < 0)
  78                die("broken output pipe");
  79        fputc('\n', pack_pipe);
  80        fflush(pack_pipe);
  81        free(commit->buffer);
  82        commit->buffer = NULL;
  83}
  84
  85static void show_object(struct object *obj, const struct name_path *path, const char *component)
  86{
  87        /* An object with name "foo\n0000000..." can be used to
  88         * confuse downstream git-pack-objects very badly.
  89         */
  90        const char *name = path_name(path, component);
  91        const char *ep = strchr(name, '\n');
  92        if (ep) {
  93                fprintf(pack_pipe, "%s %.*s\n", sha1_to_hex(obj->sha1),
  94                       (int) (ep - name),
  95                       name);
  96        }
  97        else
  98                fprintf(pack_pipe, "%s %s\n",
  99                                sha1_to_hex(obj->sha1), name);
 100        free((char *)name);
 101}
 102
 103static void show_edge(struct commit *commit)
 104{
 105        fprintf(pack_pipe, "-%s\n", sha1_to_hex(commit->object.sha1));
 106}
 107
 108static int do_rev_list(int in, int out, void *user_data)
 109{
 110        int i;
 111        struct rev_info revs;
 112
 113        pack_pipe = xfdopen(out, "w");
 114        init_revisions(&revs, NULL);
 115        revs.tag_objects = 1;
 116        revs.tree_objects = 1;
 117        revs.blob_objects = 1;
 118        if (use_thin_pack)
 119                revs.edge_hint = 1;
 120
 121        for (i = 0; i < want_obj.nr; i++) {
 122                struct object *o = want_obj.objects[i].item;
 123                /* why??? */
 124                o->flags &= ~UNINTERESTING;
 125                add_pending_object(&revs, o, NULL);
 126        }
 127        for (i = 0; i < have_obj.nr; i++) {
 128                struct object *o = have_obj.objects[i].item;
 129                o->flags |= UNINTERESTING;
 130                add_pending_object(&revs, o, NULL);
 131        }
 132        setup_revisions(0, NULL, &revs, NULL);
 133        if (prepare_revision_walk(&revs))
 134                die("revision walk setup failed");
 135        mark_edges_uninteresting(revs.commits, &revs, show_edge);
 136        if (use_thin_pack)
 137                for (i = 0; i < extra_edge_obj.nr; i++)
 138                        fprintf(pack_pipe, "-%s\n", sha1_to_hex(
 139                                        extra_edge_obj.objects[i].item->sha1));
 140        traverse_commit_list(&revs, show_commit, show_object, NULL);
 141        fflush(pack_pipe);
 142        fclose(pack_pipe);
 143        return 0;
 144}
 145
 146static void create_pack_file(void)
 147{
 148        struct async rev_list;
 149        struct child_process pack_objects;
 150        int create_full_pack = (nr_our_refs == want_obj.nr && !have_obj.nr);
 151        char data[8193], progress[128];
 152        char abort_msg[] = "aborting due to possible repository "
 153                "corruption on the remote side.";
 154        int buffered = -1;
 155        ssize_t sz;
 156        const char *argv[10];
 157        int arg = 0;
 158
 159        if (shallow_nr) {
 160                memset(&rev_list, 0, sizeof(rev_list));
 161                rev_list.proc = do_rev_list;
 162                rev_list.out = -1;
 163                if (start_async(&rev_list))
 164                        die("git upload-pack: unable to fork git-rev-list");
 165                argv[arg++] = "pack-objects";
 166        } else {
 167                argv[arg++] = "pack-objects";
 168                argv[arg++] = "--revs";
 169                if (create_full_pack)
 170                        argv[arg++] = "--all";
 171                else if (use_thin_pack)
 172                        argv[arg++] = "--thin";
 173        }
 174
 175        argv[arg++] = "--stdout";
 176        if (!no_progress)
 177                argv[arg++] = "--progress";
 178        if (use_ofs_delta)
 179                argv[arg++] = "--delta-base-offset";
 180        if (use_include_tag)
 181                argv[arg++] = "--include-tag";
 182        argv[arg++] = NULL;
 183
 184        memset(&pack_objects, 0, sizeof(pack_objects));
 185        pack_objects.in = shallow_nr ? rev_list.out : -1;
 186        pack_objects.out = -1;
 187        pack_objects.err = -1;
 188        pack_objects.git_cmd = 1;
 189        pack_objects.argv = argv;
 190
 191        if (start_command(&pack_objects))
 192                die("git upload-pack: unable to fork git-pack-objects");
 193
 194        /* pass on revisions we (don't) want */
 195        if (!shallow_nr) {
 196                FILE *pipe_fd = xfdopen(pack_objects.in, "w");
 197                if (!create_full_pack) {
 198                        int i;
 199                        for (i = 0; i < want_obj.nr; i++)
 200                                fprintf(pipe_fd, "%s\n", sha1_to_hex(want_obj.objects[i].item->sha1));
 201                        fprintf(pipe_fd, "--not\n");
 202                        for (i = 0; i < have_obj.nr; i++)
 203                                fprintf(pipe_fd, "%s\n", sha1_to_hex(have_obj.objects[i].item->sha1));
 204                }
 205
 206                fprintf(pipe_fd, "\n");
 207                fflush(pipe_fd);
 208                fclose(pipe_fd);
 209        }
 210
 211
 212        /* We read from pack_objects.err to capture stderr output for
 213         * progress bar, and pack_objects.out to capture the pack data.
 214         */
 215
 216        while (1) {
 217                struct pollfd pfd[2];
 218                int pe, pu, pollsize;
 219
 220                reset_timeout();
 221
 222                pollsize = 0;
 223                pe = pu = -1;
 224
 225                if (0 <= pack_objects.out) {
 226                        pfd[pollsize].fd = pack_objects.out;
 227                        pfd[pollsize].events = POLLIN;
 228                        pu = pollsize;
 229                        pollsize++;
 230                }
 231                if (0 <= pack_objects.err) {
 232                        pfd[pollsize].fd = pack_objects.err;
 233                        pfd[pollsize].events = POLLIN;
 234                        pe = pollsize;
 235                        pollsize++;
 236                }
 237
 238                if (!pollsize)
 239                        break;
 240
 241                if (poll(pfd, pollsize, -1) < 0) {
 242                        if (errno != EINTR) {
 243                                error("poll failed, resuming: %s",
 244                                      strerror(errno));
 245                                sleep(1);
 246                        }
 247                        continue;
 248                }
 249                if (0 <= pe && (pfd[pe].revents & (POLLIN|POLLHUP))) {
 250                        /* Status ready; we ship that in the side-band
 251                         * or dump to the standard error.
 252                         */
 253                        sz = xread(pack_objects.err, progress,
 254                                  sizeof(progress));
 255                        if (0 < sz)
 256                                send_client_data(2, progress, sz);
 257                        else if (sz == 0) {
 258                                close(pack_objects.err);
 259                                pack_objects.err = -1;
 260                        }
 261                        else
 262                                goto fail;
 263                        /* give priority to status messages */
 264                        continue;
 265                }
 266                if (0 <= pu && (pfd[pu].revents & (POLLIN|POLLHUP))) {
 267                        /* Data ready; we keep the last byte to ourselves
 268                         * in case we detect broken rev-list, so that we
 269                         * can leave the stream corrupted.  This is
 270                         * unfortunate -- unpack-objects would happily
 271                         * accept a valid packdata with trailing garbage,
 272                         * so appending garbage after we pass all the
 273                         * pack data is not good enough to signal
 274                         * breakage to downstream.
 275                         */
 276                        char *cp = data;
 277                        ssize_t outsz = 0;
 278                        if (0 <= buffered) {
 279                                *cp++ = buffered;
 280                                outsz++;
 281                        }
 282                        sz = xread(pack_objects.out, cp,
 283                                  sizeof(data) - outsz);
 284                        if (0 < sz)
 285                                ;
 286                        else if (sz == 0) {
 287                                close(pack_objects.out);
 288                                pack_objects.out = -1;
 289                        }
 290                        else
 291                                goto fail;
 292                        sz += outsz;
 293                        if (1 < sz) {
 294                                buffered = data[sz-1] & 0xFF;
 295                                sz--;
 296                        }
 297                        else
 298                                buffered = -1;
 299                        sz = send_client_data(1, data, sz);
 300                        if (sz < 0)
 301                                goto fail;
 302                }
 303        }
 304
 305        if (finish_command(&pack_objects)) {
 306                error("git upload-pack: git-pack-objects died with error.");
 307                goto fail;
 308        }
 309        if (shallow_nr && finish_async(&rev_list))
 310                goto fail;      /* error was already reported */
 311
 312        /* flush the data */
 313        if (0 <= buffered) {
 314                data[0] = buffered;
 315                sz = send_client_data(1, data, 1);
 316                if (sz < 0)
 317                        goto fail;
 318                fprintf(stderr, "flushed.\n");
 319        }
 320        if (use_sideband)
 321                packet_flush(1);
 322        return;
 323
 324 fail:
 325        send_client_data(3, abort_msg, sizeof(abort_msg));
 326        die("git upload-pack: %s", abort_msg);
 327}
 328
 329static int got_sha1(char *hex, unsigned char *sha1)
 330{
 331        struct object *o;
 332        int we_knew_they_have = 0;
 333
 334        if (get_sha1_hex(hex, sha1))
 335                die("git upload-pack: expected SHA1 object, got '%s'", hex);
 336        if (!has_sha1_file(sha1))
 337                return -1;
 338
 339        o = lookup_object(sha1);
 340        if (!(o && o->parsed))
 341                o = parse_object(sha1);
 342        if (!o)
 343                die("oops (%s)", sha1_to_hex(sha1));
 344        if (o->type == OBJ_COMMIT) {
 345                struct commit_list *parents;
 346                struct commit *commit = (struct commit *)o;
 347                if (o->flags & THEY_HAVE)
 348                        we_knew_they_have = 1;
 349                else
 350                        o->flags |= THEY_HAVE;
 351                if (!oldest_have || (commit->date < oldest_have))
 352                        oldest_have = commit->date;
 353                for (parents = commit->parents;
 354                     parents;
 355                     parents = parents->next)
 356                        parents->item->object.flags |= THEY_HAVE;
 357        }
 358        if (!we_knew_they_have) {
 359                add_object_array(o, NULL, &have_obj);
 360                return 1;
 361        }
 362        return 0;
 363}
 364
 365static int reachable(struct commit *want)
 366{
 367        struct commit_list *work = NULL;
 368
 369        commit_list_insert_by_date(want, &work);
 370        while (work) {
 371                struct commit_list *list = work->next;
 372                struct commit *commit = work->item;
 373                free(work);
 374                work = list;
 375
 376                if (commit->object.flags & THEY_HAVE) {
 377                        want->object.flags |= COMMON_KNOWN;
 378                        break;
 379                }
 380                if (!commit->object.parsed)
 381                        parse_object(commit->object.sha1);
 382                if (commit->object.flags & REACHABLE)
 383                        continue;
 384                commit->object.flags |= REACHABLE;
 385                if (commit->date < oldest_have)
 386                        continue;
 387                for (list = commit->parents; list; list = list->next) {
 388                        struct commit *parent = list->item;
 389                        if (!(parent->object.flags & REACHABLE))
 390                                commit_list_insert_by_date(parent, &work);
 391                }
 392        }
 393        want->object.flags |= REACHABLE;
 394        clear_commit_marks(want, REACHABLE);
 395        free_commit_list(work);
 396        return (want->object.flags & COMMON_KNOWN);
 397}
 398
 399static int ok_to_give_up(void)
 400{
 401        int i;
 402
 403        if (!have_obj.nr)
 404                return 0;
 405
 406        for (i = 0; i < want_obj.nr; i++) {
 407                struct object *want = want_obj.objects[i].item;
 408
 409                if (want->flags & COMMON_KNOWN)
 410                        continue;
 411                want = deref_tag(want, "a want line", 0);
 412                if (!want || want->type != OBJ_COMMIT) {
 413                        /* no way to tell if this is reachable by
 414                         * looking at the ancestry chain alone, so
 415                         * leave a note to ourselves not to worry about
 416                         * this object anymore.
 417                         */
 418                        want_obj.objects[i].item->flags |= COMMON_KNOWN;
 419                        continue;
 420                }
 421                if (!reachable((struct commit *)want))
 422                        return 0;
 423        }
 424        return 1;
 425}
 426
 427static int get_common_commits(void)
 428{
 429        static char line[1000];
 430        unsigned char sha1[20];
 431        char last_hex[41];
 432
 433        save_commit_buffer = 0;
 434
 435        for (;;) {
 436                int len = packet_read_line(0, line, sizeof(line));
 437                reset_timeout();
 438
 439                if (!len) {
 440                        if (have_obj.nr == 0 || multi_ack)
 441                                packet_write(1, "NAK\n");
 442                        if (stateless_rpc)
 443                                exit(0);
 444                        continue;
 445                }
 446                strip(line, len);
 447                if (!prefixcmp(line, "have ")) {
 448                        switch (got_sha1(line+5, sha1)) {
 449                        case -1: /* they have what we do not */
 450                                if (multi_ack && ok_to_give_up()) {
 451                                        const char *hex = sha1_to_hex(sha1);
 452                                        if (multi_ack == 2)
 453                                                packet_write(1, "ACK %s ready\n", hex);
 454                                        else
 455                                                packet_write(1, "ACK %s continue\n", hex);
 456                                }
 457                                break;
 458                        default:
 459                                memcpy(last_hex, sha1_to_hex(sha1), 41);
 460                                if (multi_ack == 2)
 461                                        packet_write(1, "ACK %s common\n", last_hex);
 462                                else if (multi_ack)
 463                                        packet_write(1, "ACK %s continue\n", last_hex);
 464                                else if (have_obj.nr == 1)
 465                                        packet_write(1, "ACK %s\n", last_hex);
 466                                break;
 467                        }
 468                        continue;
 469                }
 470                if (!strcmp(line, "done")) {
 471                        if (have_obj.nr > 0) {
 472                                if (multi_ack)
 473                                        packet_write(1, "ACK %s\n", last_hex);
 474                                return 0;
 475                        }
 476                        packet_write(1, "NAK\n");
 477                        return -1;
 478                }
 479                die("git upload-pack: expected SHA1 list, got '%s'", line);
 480        }
 481}
 482
 483static void receive_needs(void)
 484{
 485        struct object_array shallows = OBJECT_ARRAY_INIT;
 486        static char line[1000];
 487        int len, depth = 0;
 488
 489        shallow_nr = 0;
 490        if (debug_fd)
 491                write_str_in_full(debug_fd, "#S\n");
 492        for (;;) {
 493                struct object *o;
 494                unsigned char sha1_buf[20];
 495                len = packet_read_line(0, line, sizeof(line));
 496                reset_timeout();
 497                if (!len)
 498                        break;
 499                if (debug_fd)
 500                        write_in_full(debug_fd, line, len);
 501
 502                if (!prefixcmp(line, "shallow ")) {
 503                        unsigned char sha1[20];
 504                        struct object *object;
 505                        if (get_sha1(line + 8, sha1))
 506                                die("invalid shallow line: %s", line);
 507                        object = parse_object(sha1);
 508                        if (!object)
 509                                die("did not find object for %s", line);
 510                        object->flags |= CLIENT_SHALLOW;
 511                        add_object_array(object, NULL, &shallows);
 512                        continue;
 513                }
 514                if (!prefixcmp(line, "deepen ")) {
 515                        char *end;
 516                        depth = strtol(line + 7, &end, 0);
 517                        if (end == line + 7 || depth <= 0)
 518                                die("Invalid deepen: %s", line);
 519                        continue;
 520                }
 521                if (prefixcmp(line, "want ") ||
 522                    get_sha1_hex(line+5, sha1_buf))
 523                        die("git upload-pack: protocol error, "
 524                            "expected to get sha, not '%s'", line);
 525                if (strstr(line+45, "multi_ack_detailed"))
 526                        multi_ack = 2;
 527                else if (strstr(line+45, "multi_ack"))
 528                        multi_ack = 1;
 529                if (strstr(line+45, "thin-pack"))
 530                        use_thin_pack = 1;
 531                if (strstr(line+45, "ofs-delta"))
 532                        use_ofs_delta = 1;
 533                if (strstr(line+45, "side-band-64k"))
 534                        use_sideband = LARGE_PACKET_MAX;
 535                else if (strstr(line+45, "side-band"))
 536                        use_sideband = DEFAULT_PACKET_MAX;
 537                if (strstr(line+45, "no-progress"))
 538                        no_progress = 1;
 539                if (strstr(line+45, "include-tag"))
 540                        use_include_tag = 1;
 541
 542                /* We have sent all our refs already, and the other end
 543                 * should have chosen out of them; otherwise they are
 544                 * asking for nonsense.
 545                 *
 546                 * Hmph.  We may later want to allow "want" line that
 547                 * asks for something like "master~10" (symbolic)...
 548                 * would it make sense?  I don't know.
 549                 */
 550                o = lookup_object(sha1_buf);
 551                if (!o || !(o->flags & OUR_REF))
 552                        die("git upload-pack: not our ref %s",
 553                            sha1_to_hex(sha1_buf));
 554                if (!(o->flags & WANTED)) {
 555                        o->flags |= WANTED;
 556                        add_object_array(o, NULL, &want_obj);
 557                }
 558        }
 559        if (debug_fd)
 560                write_str_in_full(debug_fd, "#E\n");
 561
 562        if (!use_sideband && daemon_mode)
 563                no_progress = 1;
 564
 565        if (depth == 0 && shallows.nr == 0)
 566                return;
 567        if (depth > 0) {
 568                struct commit_list *result, *backup;
 569                int i;
 570                backup = result = get_shallow_commits(&want_obj, depth,
 571                        SHALLOW, NOT_SHALLOW);
 572                while (result) {
 573                        struct object *object = &result->item->object;
 574                        if (!(object->flags & (CLIENT_SHALLOW|NOT_SHALLOW))) {
 575                                packet_write(1, "shallow %s",
 576                                                sha1_to_hex(object->sha1));
 577                                register_shallow(object->sha1);
 578                                shallow_nr++;
 579                        }
 580                        result = result->next;
 581                }
 582                free_commit_list(backup);
 583                for (i = 0; i < shallows.nr; i++) {
 584                        struct object *object = shallows.objects[i].item;
 585                        if (object->flags & NOT_SHALLOW) {
 586                                struct commit_list *parents;
 587                                packet_write(1, "unshallow %s",
 588                                        sha1_to_hex(object->sha1));
 589                                object->flags &= ~CLIENT_SHALLOW;
 590                                /* make sure the real parents are parsed */
 591                                unregister_shallow(object->sha1);
 592                                object->parsed = 0;
 593                                if (parse_commit((struct commit *)object))
 594                                        die("invalid commit");
 595                                parents = ((struct commit *)object)->parents;
 596                                while (parents) {
 597                                        add_object_array(&parents->item->object,
 598                                                        NULL, &want_obj);
 599                                        parents = parents->next;
 600                                }
 601                                add_object_array(object, NULL, &extra_edge_obj);
 602                        }
 603                        /* make sure commit traversal conforms to client */
 604                        register_shallow(object->sha1);
 605                }
 606                packet_flush(1);
 607        } else
 608                if (shallows.nr > 0) {
 609                        int i;
 610                        for (i = 0; i < shallows.nr; i++)
 611                                register_shallow(shallows.objects[i].item->sha1);
 612                }
 613
 614        shallow_nr += shallows.nr;
 615        free(shallows.objects);
 616}
 617
 618static int send_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
 619{
 620        static const char *capabilities = "multi_ack thin-pack side-band"
 621                " side-band-64k ofs-delta shallow no-progress"
 622                " include-tag multi_ack_detailed";
 623        struct object *o = parse_object(sha1);
 624
 625        if (!o)
 626                die("git upload-pack: cannot find object %s:", sha1_to_hex(sha1));
 627
 628        if (capabilities)
 629                packet_write(1, "%s %s%c%s\n", sha1_to_hex(sha1), refname,
 630                        0, capabilities);
 631        else
 632                packet_write(1, "%s %s\n", sha1_to_hex(sha1), refname);
 633        capabilities = NULL;
 634        if (!(o->flags & OUR_REF)) {
 635                o->flags |= OUR_REF;
 636                nr_our_refs++;
 637        }
 638        if (o->type == OBJ_TAG) {
 639                o = deref_tag(o, refname, 0);
 640                if (o)
 641                        packet_write(1, "%s %s^{}\n", sha1_to_hex(o->sha1), refname);
 642        }
 643        return 0;
 644}
 645
 646static int mark_our_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
 647{
 648        struct object *o = parse_object(sha1);
 649        if (!o)
 650                die("git upload-pack: cannot find object %s:", sha1_to_hex(sha1));
 651        if (!(o->flags & OUR_REF)) {
 652                o->flags |= OUR_REF;
 653                nr_our_refs++;
 654        }
 655        return 0;
 656}
 657
 658static void upload_pack(void)
 659{
 660        if (advertise_refs || !stateless_rpc) {
 661                reset_timeout();
 662                head_ref(send_ref, NULL);
 663                for_each_ref(send_ref, NULL);
 664                packet_flush(1);
 665        } else {
 666                head_ref(mark_our_ref, NULL);
 667                for_each_ref(mark_our_ref, NULL);
 668        }
 669        if (advertise_refs)
 670                return;
 671
 672        receive_needs();
 673        if (want_obj.nr) {
 674                get_common_commits();
 675                create_pack_file();
 676        }
 677}
 678
 679int main(int argc, char **argv)
 680{
 681        char *dir;
 682        int i;
 683        int strict = 0;
 684
 685        git_extract_argv0_path(argv[0]);
 686        read_replace_refs = 0;
 687
 688        for (i = 1; i < argc; i++) {
 689                char *arg = argv[i];
 690
 691                if (arg[0] != '-')
 692                        break;
 693                if (!strcmp(arg, "--advertise-refs")) {
 694                        advertise_refs = 1;
 695                        continue;
 696                }
 697                if (!strcmp(arg, "--stateless-rpc")) {
 698                        stateless_rpc = 1;
 699                        continue;
 700                }
 701                if (!strcmp(arg, "--strict")) {
 702                        strict = 1;
 703                        continue;
 704                }
 705                if (!prefixcmp(arg, "--timeout=")) {
 706                        timeout = atoi(arg+10);
 707                        daemon_mode = 1;
 708                        continue;
 709                }
 710                if (!strcmp(arg, "--")) {
 711                        i++;
 712                        break;
 713                }
 714        }
 715
 716        if (i != argc-1)
 717                usage(upload_pack_usage);
 718
 719        setup_path();
 720
 721        dir = argv[i];
 722
 723        if (!enter_repo(dir, strict))
 724                die("'%s' does not appear to be a git repository", dir);
 725        if (is_repository_shallow())
 726                die("attempt to fetch/clone from a shallow repository");
 727        if (getenv("GIT_DEBUG_SEND_PACK"))
 728                debug_fd = atoi(getenv("GIT_DEBUG_SEND_PACK"));
 729        upload_pack();
 730        return 0;
 731}