/**
* Helper function to get the llog size in records. It is used by MGS
* mostly to check that config llog exists and contains data.
*
* \param[in] env execution environment
* \param[in] ctxt llog context
* \param[in] name llog name
*
* \retval true if there are records in llog besides a header
* \retval false on error or llog without records
*/
int llog_is_empty(const struct lu_env *env, struct llog_ctxt *ctxt,
char *name)
{
struct llog_handle *llh;
int rc = 0;
rc = llog_open(env, ctxt, &llh, NULL, name, LLOG_OPEN_EXISTS);
if (rc < 0) {
if (likely(rc == -ENOENT))
rc = 0;
GOTO(out, rc);
}
rc = llog_init_handle(env, llh, LLOG_F_IS_PLAIN, NULL);
if (rc)
GOTO(out_close, rc);
rc = llog_get_size(llh);
out_close:
llog_close(env, llh);
out:
/* The header is record 1, the llog is still considered as empty
* if there is only header */
return (rc <= 1);
}
int llog_is_empty(const struct lu_env *env, struct llog_ctxt *ctxt,
char *name)
{
struct llog_handle *llh;
int rc = 0;
rc = llog_open(env, ctxt, &llh, NULL, name, LLOG_OPEN_EXISTS);
if (rc < 0) {
if (likely(rc == -ENOENT))
rc = 0;
goto out;
}
rc = llog_init_handle(env, llh, LLOG_F_IS_PLAIN, NULL);
if (rc)
goto out_close;
rc = llog_get_size(llh);
out_close:
llog_close(env, llh);
out:
/* header is record 1 */
return rc <= 1;
}
