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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;

const char *argv[9];

char commit[41];

unsigned char sha1[20];

int err = 0, ac = 0;

struct packed_git *new_pack = NULL;

if (fn(cb_data, sha1))

return err;

if (transport && transport->smart_options &&

transport->smart_options->self_contained_and_connected &&

transport->pack_lockfile &&

ends_with(transport->pack_lockfile, ".keep")) {

struct strbuf idx_file = STRBUF_INIT;

strbuf_addstr(&idx_file, transport->pack_lockfile);

strbuf_setlen(&idx_file, idx_file.len - 5); /* ".keep" */

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;

memset(&rev_list, 0, sizeof(rev_list));

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(_("failed write to rev-list: %s"),

strerror(errno));

err = -1;

break;

}

} while (!fn(cb_data, sha1));

if (close(rev_list.in)) {

error(_("failed to close rev-list's stdin: %s"), strerror(errno));

err = -1;

}

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);

}