mirror of
https://github.com/git/git
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63 lines
1.5 KiB
C
63 lines
1.5 KiB
C
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#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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/*
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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 --verify-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 some of our
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* existing refs.
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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_everything_connected(sha1_iterate_fn fn, int quiet, void *cb_data)
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{
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struct child_process rev_list;
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const char *argv[] = {"rev-list", "--verify-objects",
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"--stdin", "--not", "--all", NULL, NULL};
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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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if (fn(cb_data, sha1))
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return err;
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if (quiet)
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argv[5] = "--quiet";
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memset(&rev_list, 0, sizeof(rev_list));
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rev_list.argv = argv;
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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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rev_list.no_stderr = 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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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(_("failed write to rev-list: %s"),
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strerror(errno));
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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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error(_("failed to close rev-list's stdin: %s"), strerror(errno));
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err = -1;
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}
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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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