mirror of
https://github.com/git/git.git
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70d5e2d77b
Connectivity checks have to traverse the entire object graph in the worst case (e.g., a full clone or a full push). For large repositories like linux.git, this can take 30-60 seconds, during which time git may produce little or no output. Let's add the option of showing progress, which is taken care of by rev-list. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
105 lines
2.9 KiB
C
105 lines
2.9 KiB
C
#include "cache.h"
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#include "run-command.h"
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#include "sigchain.h"
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#include "connected.h"
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#include "transport.h"
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/*
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* If we feed all the commits we want to verify to this command
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*
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* $ git rev-list --objects --stdin --not --all
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*
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* and if it does not error out, that means everything reachable from
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* these commits locally exists and is connected to our existing refs.
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* Note that this does _not_ validate the individual objects.
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*
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* Returns 0 if everything is connected, non-zero otherwise.
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*/
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int check_connected(sha1_iterate_fn fn, void *cb_data,
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struct check_connected_options *opt)
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{
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struct child_process rev_list = CHILD_PROCESS_INIT;
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struct check_connected_options defaults = CHECK_CONNECTED_INIT;
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char commit[41];
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unsigned char sha1[20];
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int err = 0;
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struct packed_git *new_pack = NULL;
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struct transport *transport;
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size_t base_len;
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if (!opt)
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opt = &defaults;
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transport = opt->transport;
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if (fn(cb_data, sha1)) {
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if (opt->err_fd)
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close(opt->err_fd);
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return err;
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}
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if (transport && transport->smart_options &&
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transport->smart_options->self_contained_and_connected &&
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transport->pack_lockfile &&
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strip_suffix(transport->pack_lockfile, ".keep", &base_len)) {
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struct strbuf idx_file = STRBUF_INIT;
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strbuf_add(&idx_file, transport->pack_lockfile, base_len);
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strbuf_addstr(&idx_file, ".idx");
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new_pack = add_packed_git(idx_file.buf, idx_file.len, 1);
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strbuf_release(&idx_file);
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}
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if (opt->shallow_file) {
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argv_array_push(&rev_list.args, "--shallow-file");
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argv_array_push(&rev_list.args, opt->shallow_file);
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}
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argv_array_push(&rev_list.args,"rev-list");
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argv_array_push(&rev_list.args, "--objects");
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argv_array_push(&rev_list.args, "--stdin");
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argv_array_push(&rev_list.args, "--not");
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argv_array_push(&rev_list.args, "--all");
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argv_array_push(&rev_list.args, "--quiet");
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if (opt->progress)
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argv_array_pushf(&rev_list.args, "--progress=%s",
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_("Checking connectivity"));
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rev_list.git_cmd = 1;
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rev_list.in = -1;
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rev_list.no_stdout = 1;
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if (opt->err_fd)
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rev_list.err = opt->err_fd;
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else
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rev_list.no_stderr = opt->quiet;
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if (start_command(&rev_list))
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return error(_("Could not run 'git rev-list'"));
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sigchain_push(SIGPIPE, SIG_IGN);
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commit[40] = '\n';
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do {
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/*
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* If index-pack already checked that:
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* - there are no dangling pointers in the new pack
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* - the pack is self contained
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* Then if the updated ref is in the new pack, then we
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* are sure the ref is good and not sending it to
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* rev-list for verification.
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*/
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if (new_pack && find_pack_entry_one(sha1, new_pack))
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continue;
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memcpy(commit, sha1_to_hex(sha1), 40);
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if (write_in_full(rev_list.in, commit, 41) < 0) {
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if (errno != EPIPE && errno != EINVAL)
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error_errno(_("failed write to rev-list"));
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err = -1;
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break;
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}
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} while (!fn(cb_data, sha1));
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if (close(rev_list.in))
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err = error_errno(_("failed to close rev-list's stdin"));
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sigchain_pop(SIGPIPE);
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return finish_command(&rev_list) || err;
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}
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