Andrew's git - gitweb.git/blob

   1#include "cache.h"
   2#include "run-command.h"
   3#include "sigchain.h"
   4#include "connected.h"
   5#include "transport.h"
   6
   7int check_everything_connected(sha1_iterate_fn fn, int quiet, void *cb_data)
   8{
   9        return check_everything_connected_with_transport(fn, quiet, cb_data, NULL);
  10}
  11/*
  12 * If we feed all the commits we want to verify to this command
  13 *
  14 *  $ git rev-list --objects --stdin --not --all
  15 *
  16 * and if it does not error out, that means everything reachable from
  17 * these commits locally exists and is connected to our existing refs.
  18 * Note that this does _not_ validate the individual objects.
  19 *
  20 * Returns 0 if everything is connected, non-zero otherwise.
  21 */
  22int check_everything_connected_with_transport(sha1_iterate_fn fn,
  23                                              int quiet,
  24                                              void *cb_data,
  25                                              struct transport *transport)
  26{
  27        struct child_process rev_list;
  28        const char *argv[] = {"rev-list", "--objects",
  29                              "--stdin", "--not", "--all", NULL, NULL};
  30        char commit[41];
  31        unsigned char sha1[20];
  32        int err = 0;
  33        struct packed_git *new_pack = NULL;
  34
  35        if (fn(cb_data, sha1))
  36                return err;
  37
  38        if (transport && transport->smart_options &&
  39            transport->smart_options->self_contained_and_connected &&
  40            transport->pack_lockfile &&
  41            ends_with(transport->pack_lockfile, ".keep")) {
  42                struct strbuf idx_file = STRBUF_INIT;
  43                strbuf_addstr(&idx_file, transport->pack_lockfile);
  44                strbuf_setlen(&idx_file, idx_file.len - 5); /* ".keep" */
  45                strbuf_addstr(&idx_file, ".idx");
  46                new_pack = add_packed_git(idx_file.buf, idx_file.len, 1);
  47                strbuf_release(&idx_file);
  48        }
  49
  50        if (quiet)
  51                argv[5] = "--quiet";
  52
  53        memset(&rev_list, 0, sizeof(rev_list));
  54        rev_list.argv = argv;
  55        rev_list.git_cmd = 1;
  56        rev_list.in = -1;
  57        rev_list.no_stdout = 1;
  58        rev_list.no_stderr = quiet;
  59        if (start_command(&rev_list))
  60                return error(_("Could not run 'git rev-list'"));
  61
  62        sigchain_push(SIGPIPE, SIG_IGN);
  63
  64        commit[40] = '\n';
  65        do {
  66                /*
  67                 * If index-pack already checked that:
  68                 * - there are no dangling pointers in the new pack
  69                 * - the pack is self contained
  70                 * Then if the updated ref is in the new pack, then we
  71                 * are sure the ref is good and not sending it to
  72                 * rev-list for verification.
  73                 */
  74                if (new_pack && find_pack_entry_one(sha1, new_pack))
  75                        continue;
  76
  77                memcpy(commit, sha1_to_hex(sha1), 40);
  78                if (write_in_full(rev_list.in, commit, 41) < 0) {
  79                        if (errno != EPIPE && errno != EINVAL)
  80                                error(_("failed write to rev-list: %s"),
  81                                      strerror(errno));
  82                        err = -1;
  83                        break;
  84                }
  85        } while (!fn(cb_data, sha1));
  86
  87        if (close(rev_list.in)) {
  88                error(_("failed to close rev-list's stdin: %s"), strerror(errno));
  89                err = -1;
  90        }
  91
  92        sigchain_pop(SIGPIPE);
  93        return finish_command(&rev_list) || err;
  94}