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1 | #include "cache.h" | |
2 | #include "run-command.h" | |
3 | #include "sigchain.h" | |
4 | #include "connected.h" | |
5 | #include "transport.h" | |
6 | #include "packfile.h" | |
7 | ||
8 | /* | |
9 | * If we feed all the commits we want to verify to this command | |
10 | * | |
11 | * $ git rev-list --objects --stdin --not --all | |
12 | * | |
13 | * and if it does not error out, that means everything reachable from | |
14 | * these commits locally exists and is connected to our existing refs. | |
15 | * Note that this does _not_ validate the individual objects. | |
16 | * | |
17 | * Returns 0 if everything is connected, non-zero otherwise. | |
18 | */ | |
19 | int check_connected(oid_iterate_fn fn, void *cb_data, | |
20 | struct check_connected_options *opt) | |
21 | { | |
22 | struct child_process rev_list = CHILD_PROCESS_INIT; | |
23 | struct check_connected_options defaults = CHECK_CONNECTED_INIT; | |
24 | char commit[GIT_MAX_HEXSZ + 1]; | |
25 | struct object_id oid; | |
26 | int err = 0; | |
27 | struct packed_git *new_pack = NULL; | |
28 | struct transport *transport; | |
29 | size_t base_len; | |
30 | ||
31 | if (!opt) | |
32 | opt = &defaults; | |
33 | transport = opt->transport; | |
34 | ||
35 | if (fn(cb_data, &oid)) { | |
36 | if (opt->err_fd) | |
37 | close(opt->err_fd); | |
38 | return err; | |
39 | } | |
40 | ||
41 | if (transport && transport->smart_options && | |
42 | transport->smart_options->self_contained_and_connected && | |
43 | transport->pack_lockfile && | |
44 | strip_suffix(transport->pack_lockfile, ".keep", &base_len)) { | |
45 | struct strbuf idx_file = STRBUF_INIT; | |
46 | strbuf_add(&idx_file, transport->pack_lockfile, base_len); | |
47 | strbuf_addstr(&idx_file, ".idx"); | |
48 | new_pack = add_packed_git(idx_file.buf, idx_file.len, 1); | |
49 | strbuf_release(&idx_file); | |
50 | } | |
51 | ||
52 | if (opt->shallow_file) { | |
53 | argv_array_push(&rev_list.args, "--shallow-file"); | |
54 | argv_array_push(&rev_list.args, opt->shallow_file); | |
55 | } | |
56 | argv_array_push(&rev_list.args,"rev-list"); | |
57 | argv_array_push(&rev_list.args, "--objects"); | |
58 | argv_array_push(&rev_list.args, "--stdin"); | |
59 | if (repository_format_partial_clone) | |
60 | argv_array_push(&rev_list.args, "--exclude-promisor-objects"); | |
61 | if (!opt->is_deepening_fetch) { | |
62 | argv_array_push(&rev_list.args, "--not"); | |
63 | argv_array_push(&rev_list.args, "--all"); | |
64 | } | |
65 | argv_array_push(&rev_list.args, "--quiet"); | |
66 | if (opt->progress) | |
67 | argv_array_pushf(&rev_list.args, "--progress=%s", | |
68 | _("Checking connectivity")); | |
69 | ||
70 | rev_list.git_cmd = 1; | |
71 | rev_list.env = opt->env; | |
72 | rev_list.in = -1; | |
73 | rev_list.no_stdout = 1; | |
74 | if (opt->err_fd) | |
75 | rev_list.err = opt->err_fd; | |
76 | else | |
77 | rev_list.no_stderr = opt->quiet; | |
78 | ||
79 | if (start_command(&rev_list)) | |
80 | return error(_("Could not run 'git rev-list'")); | |
81 | ||
82 | sigchain_push(SIGPIPE, SIG_IGN); | |
83 | ||
84 | commit[GIT_SHA1_HEXSZ] = '\n'; | |
85 | do { | |
86 | /* | |
87 | * If index-pack already checked that: | |
88 | * - there are no dangling pointers in the new pack | |
89 | * - the pack is self contained | |
90 | * Then if the updated ref is in the new pack, then we | |
91 | * are sure the ref is good and not sending it to | |
92 | * rev-list for verification. | |
93 | */ | |
94 | if (new_pack && find_pack_entry_one(oid.hash, new_pack)) | |
95 | continue; | |
96 | ||
97 | memcpy(commit, oid_to_hex(&oid), GIT_SHA1_HEXSZ); | |
98 | if (write_in_full(rev_list.in, commit, GIT_SHA1_HEXSZ + 1) < 0) { | |
99 | if (errno != EPIPE && errno != EINVAL) | |
100 | error_errno(_("failed write to rev-list")); | |
101 | err = -1; | |
102 | break; | |
103 | } | |
104 | } while (!fn(cb_data, &oid)); | |
105 | ||
106 | if (close(rev_list.in)) | |
107 | err = error_errno(_("failed to close rev-list's stdin")); | |
108 | ||
109 | sigchain_pop(SIGPIPE); | |
110 | return finish_command(&rev_list) || err; | |
111 | } |