Andrew's git - gitweb.git/blob

7560a31628115eafa40237f51f6c00e5b15b183c
   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        const char *argv[9];
  30        char commit[41];
  31        unsigned char sha1[20];
  32        int err = 0, ac = 0;
  33        struct packed_git *new_pack = NULL;
  34        size_t base_len;
  35
  36        if (fn(cb_data, sha1))
  37                return err;
  38
  39        if (transport && transport->smart_options &&
  40            transport->smart_options->self_contained_and_connected &&
  41            transport->pack_lockfile &&
  42            strip_suffix(transport->pack_lockfile, ".keep", &base_len)) {
  43                struct strbuf idx_file = STRBUF_INIT;
  44                strbuf_add(&idx_file, transport->pack_lockfile, base_len);
  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 (shallow_file) {
  51                argv[ac++] = "--shallow-file";
  52                argv[ac++] = shallow_file;
  53        }
  54        argv[ac++] = "rev-list";
  55        argv[ac++] = "--objects";
  56        argv[ac++] = "--stdin";
  57        argv[ac++] = "--not";
  58        argv[ac++] = "--all";
  59        argv[ac++] = "--quiet";
  60        argv[ac] = NULL;
  61
  62        rev_list.argv = argv;
  63        rev_list.git_cmd = 1;
  64        rev_list.in = -1;
  65        rev_list.no_stdout = 1;
  66        rev_list.no_stderr = quiet;
  67        if (start_command(&rev_list))
  68                return error(_("Could not run 'git rev-list'"));
  69
  70        sigchain_push(SIGPIPE, SIG_IGN);
  71
  72        commit[40] = '\n';
  73        do {
  74                /*
  75                 * If index-pack already checked that:
  76                 * - there are no dangling pointers in the new pack
  77                 * - the pack is self contained
  78                 * Then if the updated ref is in the new pack, then we
  79                 * are sure the ref is good and not sending it to
  80                 * rev-list for verification.
  81                 */
  82                if (new_pack && find_pack_entry_one(sha1, new_pack))
  83                        continue;
  84
  85                memcpy(commit, sha1_to_hex(sha1), 40);
  86                if (write_in_full(rev_list.in, commit, 41) < 0) {
  87                        if (errno != EPIPE && errno != EINVAL)
  88                                error_errno(_("failed write to rev-list"));
  89                        err = -1;
  90                        break;
  91                }
  92        } while (!fn(cb_data, sha1));
  93
  94        if (close(rev_list.in))
  95                err = error_errno(_("failed to close rev-list's stdin"));
  96
  97        sigchain_pop(SIGPIPE);
  98        return finish_command(&rev_list) || err;
  99}
 100
 101int check_everything_connected_with_transport(sha1_iterate_fn fn,
 102                                              int quiet,
 103                                              void *cb_data,
 104                                              struct transport *transport)
 105{
 106        return check_everything_connected_real(fn, quiet, cb_data,
 107                                               transport, NULL);
 108}
 109
 110int check_shallow_connected(sha1_iterate_fn fn, int quiet, void *cb_data,
 111                            const char *shallow_file)
 112{
 113        return check_everything_connected_real(fn, quiet, cb_data,
 114                                               NULL, shallow_file);
 115}