tgupdate: merge girocco base into girocco
[git/gitweb.git] / connected.c
blob136c2ac16839b8d4de9b653337dc4794c2a4ea34
1 #include "cache.h"
2 #include "run-command.h"
3 #include "sigchain.h"
4 #include "connected.h"
5 #include "transport.h"
7 /*
8 * If we feed all the commits we want to verify to this command
10 * $ git rev-list --objects --stdin --not --all
12 * and if it does not error out, that means everything reachable from
13 * these commits locally exists and is connected to our existing refs.
14 * Note that this does _not_ validate the individual objects.
16 * Returns 0 if everything is connected, non-zero otherwise.
18 int check_connected(sha1_iterate_fn fn, void *cb_data,
19 struct check_connected_options *opt)
21 struct child_process rev_list = CHILD_PROCESS_INIT;
22 struct check_connected_options defaults = CHECK_CONNECTED_INIT;
23 char commit[41];
24 unsigned char sha1[20];
25 int err = 0;
26 struct packed_git *new_pack = NULL;
27 struct transport *transport;
28 size_t base_len;
30 if (!opt)
31 opt = &defaults;
32 transport = opt->transport;
34 if (fn(cb_data, sha1)) {
35 if (opt->err_fd)
36 close(opt->err_fd);
37 return err;
40 if (transport && transport->smart_options &&
41 transport->smart_options->self_contained_and_connected &&
42 transport->pack_lockfile &&
43 strip_suffix(transport->pack_lockfile, ".keep", &base_len)) {
44 struct strbuf idx_file = STRBUF_INIT;
45 strbuf_add(&idx_file, transport->pack_lockfile, base_len);
46 strbuf_addstr(&idx_file, ".idx");
47 new_pack = add_packed_git(idx_file.buf, idx_file.len, 1);
48 strbuf_release(&idx_file);
51 if (opt->shallow_file) {
52 argv_array_push(&rev_list.args, "--shallow-file");
53 argv_array_push(&rev_list.args, opt->shallow_file);
55 argv_array_push(&rev_list.args,"rev-list");
56 argv_array_push(&rev_list.args, "--objects");
57 argv_array_push(&rev_list.args, "--stdin");
58 argv_array_push(&rev_list.args, "--not");
59 argv_array_push(&rev_list.args, "--all");
60 argv_array_push(&rev_list.args, "--quiet");
61 if (opt->progress)
62 argv_array_pushf(&rev_list.args, "--progress=%s",
63 _("Checking connectivity"));
65 rev_list.git_cmd = 1;
66 rev_list.env = opt->env;
67 rev_list.in = -1;
68 rev_list.no_stdout = 1;
69 if (opt->err_fd)
70 rev_list.err = opt->err_fd;
71 else
72 rev_list.no_stderr = opt->quiet;
74 if (start_command(&rev_list))
75 return error(_("Could not run 'git rev-list'"));
77 sigchain_push(SIGPIPE, SIG_IGN);
79 commit[40] = '\n';
80 do {
82 * If index-pack already checked that:
83 * - there are no dangling pointers in the new pack
84 * - the pack is self contained
85 * Then if the updated ref is in the new pack, then we
86 * are sure the ref is good and not sending it to
87 * rev-list for verification.
89 if (new_pack && find_pack_entry_one(sha1, new_pack))
90 continue;
92 memcpy(commit, sha1_to_hex(sha1), 40);
93 if (write_in_full(rev_list.in, commit, 41) < 0) {
94 if (errno != EPIPE && errno != EINVAL)
95 error_errno(_("failed write to rev-list"));
96 err = -1;
97 break;
99 } while (!fn(cb_data, sha1));
101 if (close(rev_list.in))
102 err = error_errno(_("failed to close rev-list's stdin"));
104 sigchain_pop(SIGPIPE);
105 return finish_command(&rev_list) || err;