The first batch post 2.24 cycle
[git.git] / connected.c
blob36c4e5dedb6a7bc76e29bc5e9f8f44f12b7c7057
1 #include "cache.h"
2 #include "object-store.h"
3 #include "run-command.h"
4 #include "sigchain.h"
5 #include "connected.h"
6 #include "transport.h"
7 #include "packfile.h"
8 #include "promisor-remote.h"
11 * If we feed all the commits we want to verify to this command
13 * $ git rev-list --objects --stdin --not --all
15 * and if it does not error out, that means everything reachable from
16 * these commits locally exists and is connected to our existing refs.
17 * Note that this does _not_ validate the individual objects.
19 * Returns 0 if everything is connected, non-zero otherwise.
21 int check_connected(oid_iterate_fn fn, void *cb_data,
22 struct check_connected_options *opt)
24 struct child_process rev_list = CHILD_PROCESS_INIT;
25 struct check_connected_options defaults = CHECK_CONNECTED_INIT;
26 char commit[GIT_MAX_HEXSZ + 1];
27 struct object_id oid;
28 int err = 0;
29 struct packed_git *new_pack = NULL;
30 struct transport *transport;
31 size_t base_len;
32 const unsigned hexsz = the_hash_algo->hexsz;
34 if (!opt)
35 opt = &defaults;
36 transport = opt->transport;
38 if (fn(cb_data, &oid)) {
39 if (opt->err_fd)
40 close(opt->err_fd);
41 return err;
44 if (transport && transport->smart_options &&
45 transport->smart_options->self_contained_and_connected &&
46 transport->pack_lockfile &&
47 strip_suffix(transport->pack_lockfile, ".keep", &base_len)) {
48 struct strbuf idx_file = STRBUF_INIT;
49 strbuf_add(&idx_file, transport->pack_lockfile, base_len);
50 strbuf_addstr(&idx_file, ".idx");
51 new_pack = add_packed_git(idx_file.buf, idx_file.len, 1);
52 strbuf_release(&idx_file);
55 if (opt->check_refs_only) {
57 * For partial clones, we don't want to have to do a regular
58 * connectivity check because we have to enumerate and exclude
59 * all promisor objects (slow), and then the connectivity check
60 * itself becomes a no-op because in a partial clone every
61 * object is a promisor object. Instead, just make sure we
62 * received the objects pointed to by each wanted ref.
64 do {
65 if (!repo_has_object_file(the_repository, &oid))
66 return 1;
67 } while (!fn(cb_data, &oid));
68 return 0;
71 if (opt->shallow_file) {
72 argv_array_push(&rev_list.args, "--shallow-file");
73 argv_array_push(&rev_list.args, opt->shallow_file);
75 argv_array_push(&rev_list.args,"rev-list");
76 argv_array_push(&rev_list.args, "--objects");
77 argv_array_push(&rev_list.args, "--stdin");
78 if (has_promisor_remote())
79 argv_array_push(&rev_list.args, "--exclude-promisor-objects");
80 if (!opt->is_deepening_fetch) {
81 argv_array_push(&rev_list.args, "--not");
82 argv_array_push(&rev_list.args, "--all");
84 argv_array_push(&rev_list.args, "--quiet");
85 argv_array_push(&rev_list.args, "--alternate-refs");
86 if (opt->progress)
87 argv_array_pushf(&rev_list.args, "--progress=%s",
88 _("Checking connectivity"));
90 rev_list.git_cmd = 1;
91 rev_list.env = opt->env;
92 rev_list.in = -1;
93 rev_list.no_stdout = 1;
94 if (opt->err_fd)
95 rev_list.err = opt->err_fd;
96 else
97 rev_list.no_stderr = opt->quiet;
99 if (start_command(&rev_list))
100 return error(_("Could not run 'git rev-list'"));
102 sigchain_push(SIGPIPE, SIG_IGN);
104 commit[hexsz] = '\n';
105 do {
107 * If index-pack already checked that:
108 * - there are no dangling pointers in the new pack
109 * - the pack is self contained
110 * Then if the updated ref is in the new pack, then we
111 * are sure the ref is good and not sending it to
112 * rev-list for verification.
114 if (new_pack && find_pack_entry_one(oid.hash, new_pack))
115 continue;
117 memcpy(commit, oid_to_hex(&oid), hexsz);
118 if (write_in_full(rev_list.in, commit, hexsz + 1) < 0) {
119 if (errno != EPIPE && errno != EINVAL)
120 error_errno(_("failed write to rev-list"));
121 err = -1;
122 break;
124 } while (!fn(cb_data, &oid));
126 if (close(rev_list.in))
127 err = error_errno(_("failed to close rev-list's stdin"));
129 sigchain_pop(SIGPIPE);
130 return finish_command(&rev_list) || err;