Andrew's git - gitweb.git/blob

a3bfc4e679e3f0d33dd84805c91f6ea81c467e3d
   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 */
  22static int check_everything_connected_real(sha1_iterate_fn fn,
  23                                           int quiet,
  24                                           void *cb_data,
  25                                           struct transport *transport,
  26                                           const char *shallow_file)
  27{
  28        struct child_process rev_list = CHILD_PROCESS_INIT;
  29        char commit[41];
  30        unsigned char sha1[20];
  31        int err = 0;
  32        struct packed_git *new_pack = NULL;
  33        size_t base_len;
  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            strip_suffix(transport->pack_lockfile, ".keep", &base_len)) {
  42                struct strbuf idx_file = STRBUF_INIT;
  43                strbuf_add(&idx_file, transport->pack_lockfile, base_len);
  44                strbuf_addstr(&idx_file, ".idx");
  45                new_pack = add_packed_git(idx_file.buf, idx_file.len, 1);
  46                strbuf_release(&idx_file);
  47        }
  48
  49        if (shallow_file) {
  50                argv_array_push(&rev_list.args, "--shallow-file");
  51                argv_array_push(&rev_list.args, shallow_file);
  52        }
  53        argv_array_push(&rev_list.args,"rev-list");
  54        argv_array_push(&rev_list.args, "--objects");
  55        argv_array_push(&rev_list.args, "--stdin");
  56        argv_array_push(&rev_list.args, "--not");
  57        argv_array_push(&rev_list.args, "--all");
  58        argv_array_push(&rev_list.args, "--quiet");
  59
  60        rev_list.git_cmd = 1;
  61        rev_list.in = -1;
  62        rev_list.no_stdout = 1;
  63        rev_list.no_stderr = quiet;
  64        if (start_command(&rev_list))
  65                return error(_("Could not run 'git rev-list'"));
  66
  67        sigchain_push(SIGPIPE, SIG_IGN);
  68
  69        commit[40] = '\n';
  70        do {
  71                /*
  72                 * If index-pack already checked that:
  73                 * - there are no dangling pointers in the new pack
  74                 * - the pack is self contained
  75                 * Then if the updated ref is in the new pack, then we
  76                 * are sure the ref is good and not sending it to
  77                 * rev-list for verification.
  78                 */
  79                if (new_pack && find_pack_entry_one(sha1, new_pack))
  80                        continue;
  81
  82                memcpy(commit, sha1_to_hex(sha1), 40);
  83                if (write_in_full(rev_list.in, commit, 41) < 0) {
  84                        if (errno != EPIPE && errno != EINVAL)
  85                                error_errno(_("failed write to rev-list"));
  86                        err = -1;
  87                        break;
  88                }
  89        } while (!fn(cb_data, sha1));
  90
  91        if (close(rev_list.in))
  92                err = error_errno(_("failed to close rev-list's stdin"));
  93
  94        sigchain_pop(SIGPIPE);
  95        return finish_command(&rev_list) || err;
  96}
  97
  98int check_everything_connected_with_transport(sha1_iterate_fn fn,
  99                                              int quiet,
 100                                              void *cb_data,
 101                                              struct transport *transport)
 102{
 103        return check_everything_connected_real(fn, quiet, cb_data,
 104                                               transport, NULL);
 105}
 106
 107int check_shallow_connected(sha1_iterate_fn fn, int quiet, void *cb_data,
 108                            const char *shallow_file)
 109{
 110        return check_everything_connected_real(fn, quiet, cb_data,
 111                                               NULL, shallow_file);
 112}