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Copy pathconnected.c
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116 lines (104 loc) · 3.17 KB
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#include "cache.h"
#include "run-command.h"
#include "sigchain.h"
#include "connected.h"
#include "transport.h"
int check_everything_connected(sha1_iterate_fn fn, int quiet, void *cb_data)
{
return check_everything_connected_with_transport(fn, quiet, cb_data, NULL);
}
/*
* If we feed all the commits we want to verify to this command
*
* $ git rev-list --objects --stdin --not --all
*
* and if it does not error out, that means everything reachable from
* these commits locally exists and is connected to our existing refs.
* Note that this does _not_ validate the individual objects.
*
* Returns 0 if everything is connected, non-zero otherwise.
*/
static int check_everything_connected_real(sha1_iterate_fn fn,
int quiet,
void *cb_data,
struct transport *transport,
const char *shallow_file)
{
struct child_process rev_list = CHILD_PROCESS_INIT;
const char *argv[9];
char commit[41];
unsigned char sha1[20];
int err = 0, ac = 0;
struct packed_git *new_pack = NULL;
size_t base_len;
if (fn(cb_data, sha1))
return err;
if (transport && transport->smart_options &&
transport->smart_options->self_contained_and_connected &&
transport->pack_lockfile &&
strip_suffix(transport->pack_lockfile, ".keep", &base_len)) {
struct strbuf idx_file = STRBUF_INIT;
strbuf_add(&idx_file, transport->pack_lockfile, base_len);
strbuf_addstr(&idx_file, ".idx");
new_pack = add_packed_git(idx_file.buf, idx_file.len, 1);
strbuf_release(&idx_file);
}
if (shallow_file) {
argv[ac++] = "--shallow-file";
argv[ac++] = shallow_file;
}
argv[ac++] = "rev-list";
argv[ac++] = "--objects";
argv[ac++] = "--stdin";
argv[ac++] = "--not";
argv[ac++] = "--all";
if (quiet)
argv[ac++] = "--quiet";
argv[ac] = NULL;
rev_list.argv = argv;
rev_list.git_cmd = 1;
rev_list.in = -1;
rev_list.no_stdout = 1;
rev_list.no_stderr = quiet;
if (start_command(&rev_list))
return error(_("Could not run 'git rev-list'"));
sigchain_push(SIGPIPE, SIG_IGN);
commit[40] = '\n';
do {
/*
* If index-pack already checked that:
* - there are no dangling pointers in the new pack
* - the pack is self contained
* Then if the updated ref is in the new pack, then we
* are sure the ref is good and not sending it to
* rev-list for verification.
*/
if (new_pack && find_pack_entry_one(sha1, new_pack))
continue;
memcpy(commit, sha1_to_hex(sha1), 40);
if (write_in_full(rev_list.in, commit, 41) < 0) {
if (errno != EPIPE && errno != EINVAL)
error_errno(_("failed write to rev-list"));
err = -1;
break;
}
} while (!fn(cb_data, sha1));
if (close(rev_list.in))
err = error_errno(_("failed to close rev-list's stdin"));
sigchain_pop(SIGPIPE);
return finish_command(&rev_list) || err;
}
int check_everything_connected_with_transport(sha1_iterate_fn fn,
int quiet,
void *cb_data,
struct transport *transport)
{
return check_everything_connected_real(fn, quiet, cb_data,
transport, NULL);
}
int check_shallow_connected(sha1_iterate_fn fn, int quiet, void *cb_data,
const char *shallow_file)
{
return check_everything_connected_real(fn, quiet, cb_data,
NULL, shallow_file);
}