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#include "cache.h"

#include "run-command.h"

#include "sigchain.h"

#include "connected.h"

/*

* 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.

*/

int check_everything_connected(sha1_iterate_fn fn, int quiet, void *cb_data)

{

struct child_process rev_list;

const char *argv[] = {"rev-list", "--objects",

"--stdin", "--not", "--all", NULL, NULL};

char commit[41];

unsigned char sha1[20];

int err = 0;

if (fn(cb_data, sha1))

return err;

if (quiet)

argv[5] = "--quiet";

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 {

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;

}