int llog_process(const struct lu_env *env, struct llog_handle *loghandle,
llog_cb_t cb, void *data, void *catdata)
{
int rc;
rc = llog_process_or_fork(env, loghandle, cb, data, catdata, true);
return rc == LLOG_DEL_PLAIN ? 0 : rc;
}
/* backup plain llog */
int llog_backup(const struct lu_env *env, struct obd_device *obd,
struct llog_ctxt *ctxt, struct llog_ctxt *bctxt,
char *name, char *backup)
{
struct llog_handle *llh, *bllh;
int rc;
/* open original log */
rc = llog_open(env, ctxt, &llh, NULL, name, LLOG_OPEN_EXISTS);
if (rc < 0) {
/* the -ENOENT case is also reported to the caller
* but silently so it should handle that if needed.
*/
if (rc != -ENOENT)
CERROR("%s: failed to open log %s: rc = %d\n",
obd->obd_name, name, rc);
return rc;
}
rc = llog_init_handle(env, llh, LLOG_F_IS_PLAIN, NULL);
if (rc)
GOTO(out_close, rc);
/* Make sure there's no old backup log */
rc = llog_erase(env, bctxt, NULL, backup);
if (rc < 0 && rc != -ENOENT)
GOTO(out_close, rc);
/* open backup log */
rc = llog_open_create(env, bctxt, &bllh, NULL, backup);
if (rc) {
CERROR("%s: failed to open backup logfile %s: rc = %d\n",
obd->obd_name, backup, rc);
GOTO(out_close, rc);
}
/* check that backup llog is not the same object as original one */
if (llh->lgh_obj == bllh->lgh_obj) {
CERROR("%s: backup llog %s to itself (%s), objects %p/%p\n",
obd->obd_name, name, backup, llh->lgh_obj,
bllh->lgh_obj);
GOTO(out_backup, rc = -EEXIST);
}
rc = llog_init_handle(env, bllh, LLOG_F_IS_PLAIN, NULL);
if (rc)
GOTO(out_backup, rc);
/* Copy log record by record */
rc = llog_process_or_fork(env, llh, llog_copy_handler, (void *)bllh,
NULL, false);
if (rc)
CERROR("%s: failed to backup log %s: rc = %d\n",
obd->obd_name, name, rc);
out_backup:
llog_close(env, bllh);
out_close:
llog_close(env, llh);
return rc;
}
int llog_process(const struct lu_env *env, struct llog_handle *loghandle,
llog_cb_t cb, void *data, void *catdata)
{
return llog_process_or_fork(env, loghandle, cb, data, catdata, true);
}
