Start preparing for 1.8.4.2
[alt-git.git] / connected.c
blobfae8d64c12e44cf6bcf4bab210abc4bc4b9c8ed9
1 #include "cache.h"
2 #include "run-command.h"
3 #include "sigchain.h"
4 #include "connected.h"
5 #include "transport.h"
7 int check_everything_connected(sha1_iterate_fn fn, int quiet, void *cb_data)
9 return check_everything_connected_with_transport(fn, quiet, cb_data, NULL);
12 * If we feed all the commits we want to verify to this command
14 * $ git rev-list --objects --stdin --not --all
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.
20 * Returns 0 if everything is connected, non-zero otherwise.
22 int check_everything_connected_with_transport(sha1_iterate_fn fn,
23 int quiet,
24 void *cb_data,
25 struct transport *transport)
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;
35 if (fn(cb_data, sha1))
36 return err;
38 if (transport && transport->smart_options &&
39 transport->smart_options->self_contained_and_connected &&
40 transport->pack_lockfile &&
41 !suffixcmp(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);
50 if (quiet)
51 argv[5] = "--quiet";
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'"));
62 sigchain_push(SIGPIPE, SIG_IGN);
64 commit[40] = '\n';
65 do {
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.
74 if (new_pack && find_pack_entry_one(sha1, new_pack))
75 continue;
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;
85 } while (!fn(cb_data, sha1));
87 if (close(rev_list.in)) {
88 error(_("failed to close rev-list's stdin: %s"), strerror(errno));
89 err = -1;
92 sigchain_pop(SIGPIPE);
93 return finish_command(&rev_list) || err;