*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
* Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2012, 2014, Intel Corporation.
+ * Copyright (c) 2012, 2015, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#define DEBUG_SUBSYSTEM S_LOG
+#include <linux/list.h>
#include <libcfs/libcfs.h>
#include <obd_class.h>
#include <lustre_log.h>
#include <lustre_net.h>
-#include <libcfs/list.h>
#define LLOG_CLIENT_ENTRY(ctxt, imp) do { \
mutex_lock(&ctxt->loc_mutex); \
return rc;
}
-static int llog_client_destroy(const struct lu_env *env,
- struct llog_handle *loghandle)
-{
- struct obd_import *imp;
- struct ptlrpc_request *req = NULL;
- struct llogd_body *body;
- int rc;
- ENTRY;
-
- LLOG_CLIENT_ENTRY(loghandle->lgh_ctxt, imp);
- req = ptlrpc_request_alloc_pack(imp, &RQF_LLOG_ORIGIN_HANDLE_DESTROY,
- LUSTRE_LOG_VERSION,
- LLOG_ORIGIN_HANDLE_DESTROY);
- if (req == NULL)
- GOTO(err_exit, rc =-ENOMEM);
-
- body = req_capsule_client_get(&req->rq_pill, &RMF_LLOGD_BODY);
- body->lgd_logid = loghandle->lgh_id;
- body->lgd_llh_flags = loghandle->lgh_hdr->llh_flags;
-
- if (!(body->lgd_llh_flags & LLOG_F_IS_PLAIN))
- CERROR("%s: wrong llog flags %x\n", imp->imp_obd->obd_name,
- body->lgd_llh_flags);
-
- ptlrpc_request_set_replen(req);
- rc = ptlrpc_queue_wait(req);
-
- ptlrpc_req_finished(req);
-err_exit:
- LLOG_CLIENT_EXIT(loghandle->lgh_ctxt, imp);
- RETURN(rc);
-}
-
-
static int llog_client_next_block(const struct lu_env *env,
struct llog_handle *loghandle,
int *cur_idx, int next_idx,
req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_SERVER, len);
ptlrpc_request_set_replen(req);
rc = ptlrpc_queue_wait(req);
- if (rc)
- GOTO(out, rc);
+ /* -EIO has a special meaning here. If llog_osd_next_block()
+ * reaches the end of the log without finding the desired
+ * record then it updates *cur_offset and *cur_idx and returns
+ * -EIO. In llog_process_thread() we use this to detect
+ * EOF. But we must be careful to distinguish between -EIO
+ * coming from llog_osd_next_block() and -EIO coming from
+ * ptlrpc or below. */
+ if (rc == -EIO) {
+ if (req->rq_repmsg == NULL ||
+ lustre_msg_get_status(req->rq_repmsg) != -EIO)
+ GOTO(out, rc);
+ } else if (rc < 0) {
+ GOTO(out, rc);
+ }
- body = req_capsule_server_get(&req->rq_pill, &RMF_LLOGD_BODY);
- if (body == NULL)
- GOTO(out, rc =-EFAULT);
+ body = req_capsule_server_get(&req->rq_pill, &RMF_LLOGD_BODY);
+ if (body == NULL)
+ GOTO(out, rc = -EFAULT);
+
+ *cur_idx = body->lgd_saved_index;
+ *cur_offset = body->lgd_cur_offset;
+
+ if (rc < 0)
+ GOTO(out, rc);
/* The log records are swabbed as they are processed */
ptr = req_capsule_server_get(&req->rq_pill, &RMF_EADATA);
if (ptr == NULL)
GOTO(out, rc =-EFAULT);
- *cur_idx = body->lgd_saved_index;
- *cur_offset = body->lgd_cur_offset;
-
memcpy(buf, ptr, len);
EXIT;
out:
if (hdr == NULL)
GOTO(out, rc =-EFAULT);
- memcpy(handle->lgh_hdr, hdr, sizeof (*hdr));
- handle->lgh_last_idx = handle->lgh_hdr->llh_tail.lrt_index;
-
- /* sanity checks */
- llh_hdr = &handle->lgh_hdr->llh_hdr;
- if (llh_hdr->lrh_type != LLOG_HDR_MAGIC) {
- CERROR("bad log header magic: %#x (expecting %#x)\n",
- llh_hdr->lrh_type, LLOG_HDR_MAGIC);
- rc = -EIO;
- } else if (llh_hdr->lrh_len != LLOG_CHUNK_SIZE) {
- CERROR("incorrectly sized log header: %#x "
- "(expecting %#x)\n",
- llh_hdr->lrh_len, LLOG_CHUNK_SIZE);
- CERROR("you may need to re-run lconf --write_conf.\n");
- rc = -EIO;
- }
- EXIT;
+ if (handle->lgh_hdr_size < hdr->llh_hdr.lrh_len)
+ GOTO(out, rc = -EFAULT);
+
+ memcpy(handle->lgh_hdr, hdr, hdr->llh_hdr.lrh_len);
+ handle->lgh_last_idx = LLOG_HDR_TAIL(handle->lgh_hdr)->lrt_index;
+
+ /* sanity checks */
+ llh_hdr = &handle->lgh_hdr->llh_hdr;
+ if (llh_hdr->lrh_type != LLOG_HDR_MAGIC) {
+ CERROR("bad log header magic: %#x (expecting %#x)\n",
+ llh_hdr->lrh_type, LLOG_HDR_MAGIC);
+ rc = -EIO;
+ } else if (llh_hdr->lrh_len !=
+ LLOG_HDR_TAIL(handle->lgh_hdr)->lrt_len ||
+ (llh_hdr->lrh_len & (llh_hdr->lrh_len - 1)) != 0 ||
+ llh_hdr->lrh_len < LLOG_MIN_CHUNK_SIZE ||
+ llh_hdr->lrh_len > handle->lgh_hdr_size) {
+ CERROR("incorrectly sized log header: %#x, "
+ "expecting %#x (power of two > 8192)\n",
+ llh_hdr->lrh_len,
+ LLOG_HDR_TAIL(handle->lgh_hdr)->lrt_len);
+ CERROR("you may need to re-run lconf --write_conf.\n");
+ rc = -EIO;
+ }
+ EXIT;
out:
ptlrpc_req_finished(req);
err_exit:
.lop_prev_block = llog_client_prev_block,
.lop_read_header = llog_client_read_header,
.lop_open = llog_client_open,
- .lop_destroy = llog_client_destroy,
.lop_close = llog_client_close,
};
EXPORT_SYMBOL(llog_client_ops);