NORETURN void unable_to_lock_die(const char *path, int err)
{
struct strbuf buf = STRBUF_INIT;
unable_to_lock_message(path, err, &buf);
die("%s", buf.buf);
}
int unable_to_lock_error(const char *path, int err)
{
char *msg = unable_to_lock_message(path, err);
error("%s", msg);
free(msg);
return -1;
}
int unable_to_lock_error(const char *path, int err)
{
struct strbuf buf = STRBUF_INIT;
unable_to_lock_message(path, err, &buf);
error("%s", buf.buf);
strbuf_release(&buf);
return -1;
}
int packed_refs_lock(struct ref_store *ref_store, int flags, struct strbuf *err)
{
struct packed_ref_store *refs =
packed_downcast(ref_store, REF_STORE_WRITE | REF_STORE_MAIN,
"packed_refs_lock");
static int timeout_configured = 0;
static int timeout_value = 1000;
if (!timeout_configured) {
git_config_get_int("core.packedrefstimeout", &timeout_value);
timeout_configured = 1;
}
/*
* Note that we close the lockfile immediately because we
* don't write new content to it, but rather to a separate
* tempfile.
*/
if (hold_lock_file_for_update_timeout(
&refs->lock,
refs->path,
flags, timeout_value) < 0) {
unable_to_lock_message(refs->path, errno, err);
return -1;
}
if (close_lock_file_gently(&refs->lock)) {
strbuf_addf(err, "unable to close %s: %s", refs->path, strerror(errno));
rollback_lock_file(&refs->lock);
return -1;
}
/*
* Now that we hold the `packed-refs` lock, make sure that our
* snapshot matches the current version of the file. Normally
* `get_snapshot()` does that for us, but that function
* assumes that when the file is locked, any existing snapshot
* is still valid. We've just locked the file, but it might
* have changed the moment *before* we locked it.
*/
validate_snapshot(refs);
/*
* Now make sure that the packed-refs file as it exists in the
* locked state is loaded into the snapshot:
*/
get_snapshot(refs);
return 0;
}
NORETURN void unable_to_lock_index_die(const char *path, int err)
{
die("%s", unable_to_lock_message(path, err));
}