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 */
  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        if (quiet)
  60                argv[ac++] = "--quiet";
  61        argv[ac] = NULL;
  62
  63        rev_list.argv = argv;
  64        rev_list.git_cmd = 1;
  65        rev_list.in = -1;
  66        rev_list.no_stdout = 1;
  67        rev_list.no_stderr = quiet;
  68        if (start_command(&rev_list))
  69                return error(_("Could not run 'git rev-list'"));
  70
  71        sigchain_push(SIGPIPE, SIG_IGN);
  72
  73        commit[40] = '\n';
  74        do {
  75                /*
  76                 * If index-pack already checked that:
  77                 * - there are no dangling pointers in the new pack
  78                 * - the pack is self contained
  79                 * Then if the updated ref is in the new pack, then we
  80                 * are sure the ref is good and not sending it to
  81                 * rev-list for verification.
  82                 */
  83                if (new_pack && find_pack_entry_one(sha1, new_pack))
  84                        continue;
  85
  86                memcpy(commit, sha1_to_hex(sha1), 40);
  87                if (write_in_full(rev_list.in, commit, 41) < 0) {
  88                        if (errno != EPIPE && errno != EINVAL)
  89                                error(_("failed write to rev-list: %s"),
  90                                      strerror(errno));
  91                        err = -1;
  92                        break;
  93                }
  94        } while (!fn(cb_data, sha1));
  95
  96        if (close(rev_list.in)) {
  97                error(_("failed to close rev-list's stdin: %s"), strerror(errno));
  98                err = -1;
  99        }
 100
 101        sigchain_pop(SIGPIPE);
 102        return finish_command(&rev_list) || err;
 103}
 104
 105int check_everything_connected_with_transport(sha1_iterate_fn fn,
 106                                              int quiet,
 107                                              void *cb_data,
 108                                              struct transport *transport)
 109{
 110        return check_everything_connected_real(fn, quiet, cb_data,
 111                                               transport, NULL);
 112}
 113
 114int check_shallow_connected(sha1_iterate_fn fn, int quiet, void *cb_data,
 115                            const char *shallow_file)
 116{
 117        return check_everything_connected_real(fn, quiet, cb_data,
 118                                               NULL, shallow_file);
 119}