26936bfd9b
When stripping a suffix like:
if (ends_with(str, "foo"))
buf = xmemdupz(str, strlen(str) - 3);
we can instead use strip_suffix to avoid the constant 3,
which must match the literal "foo" (we sometimes use
strlen("foo") instead, but that means we are repeating
ourselves). The example above becomes:
if (strip_suffix(str, "foo", &len))
buf = xmemdupz(str, len);
This also saves a strlen(), since we calculate the string
length when detecting the suffix.
Note that in some cases we also switch from xstrndup to
xmemdupz, which saves a further strlen call.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
121 lines
3.2 KiB
C
121 lines
3.2 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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int check_everything_connected(sha1_iterate_fn fn, int quiet, void *cb_data)
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{
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return check_everything_connected_with_transport(fn, quiet, cb_data, NULL);
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}
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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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static int check_everything_connected_real(sha1_iterate_fn fn,
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int quiet,
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void *cb_data,
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struct transport *transport,
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const char *shallow_file)
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{
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struct child_process rev_list;
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const char *argv[9];
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char commit[41];
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unsigned char sha1[20];
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int err = 0, ac = 0;
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struct packed_git *new_pack = NULL;
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size_t base_len;
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if (fn(cb_data, sha1))
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return err;
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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 (shallow_file) {
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argv[ac++] = "--shallow-file";
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argv[ac++] = shallow_file;
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}
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argv[ac++] = "rev-list";
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argv[ac++] = "--objects";
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argv[ac++] = "--stdin";
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argv[ac++] = "--not";
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argv[ac++] = "--all";
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if (quiet)
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argv[ac++] = "--quiet";
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argv[ac] = NULL;
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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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/*
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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(_("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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int check_everything_connected_with_transport(sha1_iterate_fn fn,
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int quiet,
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void *cb_data,
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struct transport *transport)
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{
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return check_everything_connected_real(fn, quiet, cb_data,
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transport, NULL);
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}
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int check_shallow_connected(sha1_iterate_fn fn, int quiet, void *cb_data,
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const char *shallow_file)
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{
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return check_everything_connected_real(fn, quiet, cb_data,
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NULL, shallow_file);
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}
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