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[fs/lustre-release.git] / lustre / ptlrpc / llog_client.c
index 27578a4..395d756 100644 (file)
 static int llog_client_create(struct llog_ctxt *ctxt, struct llog_handle **res,
                               struct llog_logid *logid, char *name)
 {
-        struct obd_import *imp;
-        struct llogd_body req_body;
-        struct llogd_body *body;
-        struct llog_handle *handle;
+        struct obd_import     *imp;
+        struct llogd_body     *body;
+        struct llog_handle    *handle;
         struct ptlrpc_request *req = NULL;
-        int size[3] = { sizeof(struct ptlrpc_body), sizeof(req_body) };
-        char *bufs[3] = { NULL, (char*)&req_body };
-        int bufcount = 2;
-        int rc;
+        int                    rc;
         ENTRY;
 
         if (ctxt->loc_imp == NULL) {
@@ -73,42 +69,49 @@ static int llog_client_create(struct llog_ctxt *ctxt, struct llog_handle **res,
                 RETURN(-ENOMEM);
         *res = handle;
 
-        memset(&req_body, 0, sizeof(req_body));
+        req = ptlrpc_request_alloc(imp, &RQF_LLOG_ORIGIN_HANDLE_CREATE);
+        if (req == NULL)
+                GOTO(err_free, rc = -ENOMEM);
+
+        if (name)
+                req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
+                                     strlen(name) + 1);
+
+        rc = ptlrpc_request_pack(req, LUSTRE_LOG_VERSION,
+                                 LLOG_ORIGIN_HANDLE_CREATE);
+        if (rc) {
+                ptlrpc_request_free(req);
+                GOTO(err_free, rc);
+        }
+        ptlrpc_request_set_replen(req);
+
+        body = req_capsule_client_get(&req->rq_pill, &RMF_LLOGD_BODY);
         if (logid)
-                req_body.lgd_logid = *logid;
-        req_body.lgd_ctxt_idx = ctxt->loc_idx - 1;
+                body->lgd_logid = *logid;
+        body->lgd_ctxt_idx = ctxt->loc_idx - 1;
 
         if (name) {
-                size[bufcount] = strlen(name) + 1;
-                bufs[bufcount] = name;
-                bufcount++;
+                char *tmp;
+                tmp = req_capsule_client_sized_get(&req->rq_pill, &RMF_NAME,
+                                                   strlen(name) + 1);
+                LASSERT(tmp);
+                strcpy(tmp, name);
         }
 
-        req = ptlrpc_prep_req(imp, LUSTRE_LOG_VERSION,
-                              LLOG_ORIGIN_HANDLE_CREATE, bufcount, size, bufs);
-        if (!req)
-                GOTO(err_free, rc = -ENOMEM);
-
-        ptlrpc_req_set_repsize(req, 2, size);
         rc = ptlrpc_queue_wait(req);
         if (rc)
                 GOTO(err_free, rc);
 
-        body = lustre_swab_repbuf(req, REPLY_REC_OFF, sizeof(*body),
-                                 lustre_swab_llogd_body);
-        if (body == NULL) {
-                CERROR ("Can't unpack llogd_body\n");
+        body = req_capsule_server_get(&req->rq_pill, &RMF_LLOGD_BODY);
+        if (body == NULL)
                 GOTO(err_free, rc =-EFAULT);
-        }
 
         handle->lgh_id = body->lgd_logid;
         handle->lgh_ctxt = ctxt;
-
+        EXIT;
 out:
-        if (req)
-                ptlrpc_req_finished(req);
-        RETURN(rc);
-
+        ptlrpc_req_finished(req);
+        return rc;
 err_free:
         llog_free_handle(handle);
         goto out;
@@ -116,23 +119,23 @@ err_free:
 
 static int llog_client_destroy(struct llog_handle *loghandle)
 {
-        struct obd_import *imp = loghandle->lgh_ctxt->loc_imp;
         struct ptlrpc_request *req = NULL;
-        struct llogd_body *body;
-        int size[] = { sizeof(struct ptlrpc_body), sizeof(*body) };
-        int rc;
+        struct llogd_body     *body;
+        int                    rc;
         ENTRY;
 
-        req = ptlrpc_prep_req(imp, LUSTRE_LOG_VERSION, 
-                              LLOG_ORIGIN_HANDLE_DESTROY, 2, size, NULL);
-        if (!req)
+        req = ptlrpc_request_alloc_pack(loghandle->lgh_ctxt->loc_imp,
+                                        &RQF_LLOG_ORIGIN_HANDLE_DESTROY,
+                                        LUSTRE_LOG_VERSION,
+                                        LLOG_ORIGIN_HANDLE_DESTROY);
+        if (req == NULL)
                 RETURN(-ENOMEM);
 
-        body = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF, sizeof(*body));
+        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;
 
-        ptlrpc_req_set_repsize(req, 2, size);
+        ptlrpc_request_set_replen(req);
         rc = ptlrpc_queue_wait(req);
         
         ptlrpc_req_finished(req);
@@ -144,20 +147,20 @@ static int llog_client_next_block(struct llog_handle *loghandle,
                                   int *cur_idx, int next_idx,
                                   __u64 *cur_offset, void *buf, int len)
 {
-        struct obd_import *imp = loghandle->lgh_ctxt->loc_imp;
         struct ptlrpc_request *req = NULL;
-        struct llogd_body *body;
-        void * ptr;
-        int size[3] = { sizeof(struct ptlrpc_body), sizeof(*body) };
-        int rc;
+        struct llogd_body     *body;
+        void                  *ptr;
+        int                    rc;
         ENTRY;
 
-        req = ptlrpc_prep_req(imp, LUSTRE_LOG_VERSION,
-                              LLOG_ORIGIN_HANDLE_NEXT_BLOCK, 2, size, NULL);
-        if (!req)
-                GOTO(out, rc = -ENOMEM);
+        req = ptlrpc_request_alloc_pack(loghandle->lgh_ctxt->loc_imp,
+                                        &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK,
+                                        LUSTRE_LOG_VERSION,
+                                        LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
+        if (req == NULL)
+                RETURN(-ENOMEM);
 
-        body = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF, sizeof(*body));
+        body = req_capsule_client_get(&req->rq_pill, &RMF_LLOGD_BODY);
         body->lgd_logid = loghandle->lgh_id;
         body->lgd_ctxt_idx = loghandle->lgh_ctxt->loc_idx - 1;
         body->lgd_llh_flags = loghandle->lgh_hdr->llh_flags;
@@ -166,120 +169,105 @@ static int llog_client_next_block(struct llog_handle *loghandle,
         body->lgd_len = len;
         body->lgd_cur_offset = *cur_offset;
 
-        size[REPLY_REC_OFF + 1] = len;
-        ptlrpc_req_set_repsize(req, 3, size);
+        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);
 
-        body = lustre_swab_repbuf(req, REPLY_REC_OFF, sizeof(*body),
-                                 lustre_swab_llogd_body);
-        if (body == NULL) {
-                CERROR ("Can't unpack llogd_body\n");
+        body = req_capsule_server_get(&req->rq_pill, &RMF_LLOGD_BODY);
+        if (body == NULL)
                 GOTO(out, rc =-EFAULT);
-        }
 
         /* The log records are swabbed as they are processed */
-        ptr = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF + 1, len);
-        if (ptr == NULL) {
-                CERROR ("Can't unpack bitmap\n");
+        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 (req)
-                ptlrpc_req_finished(req);
-        RETURN(rc);
+        ptlrpc_req_finished(req);
+        return rc;
 }
 
 static int llog_client_prev_block(struct llog_handle *loghandle,
                                   int prev_idx, void *buf, int len)
 {
-        struct obd_import *imp = loghandle->lgh_ctxt->loc_imp;
         struct ptlrpc_request *req = NULL;
-        struct llogd_body *body;
-        void * ptr;
-        int size[3] = { sizeof(struct ptlrpc_body), sizeof(*body) };
-        int rc;
+        struct llogd_body     *body;
+        void                  *ptr;
+        int                    rc;
         ENTRY;
 
-        req = ptlrpc_prep_req(imp, LUSTRE_LOG_VERSION,
-                              LLOG_ORIGIN_HANDLE_PREV_BLOCK, 2, size, NULL);
-        if (!req)
-                GOTO(out, rc = -ENOMEM);
+        req = ptlrpc_request_alloc_pack(loghandle->lgh_ctxt->loc_imp,
+                                        &RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK,
+                                        LUSTRE_LOG_VERSION,
+                                        LLOG_ORIGIN_HANDLE_PREV_BLOCK);
+        if (req == NULL)
+                RETURN(-ENOMEM);
 
-        body = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF, sizeof(*body));
+        body = req_capsule_client_get(&req->rq_pill, &RMF_LLOGD_BODY);
         body->lgd_logid = loghandle->lgh_id;
         body->lgd_ctxt_idx = loghandle->lgh_ctxt->loc_idx - 1;
         body->lgd_llh_flags = loghandle->lgh_hdr->llh_flags;
         body->lgd_index = prev_idx;
         body->lgd_len = len;
 
-        size[REPLY_REC_OFF + 1] = len;
-        ptlrpc_req_set_repsize(req, 3, size);
+        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);
 
-        body = lustre_swab_repbuf(req, REPLY_REC_OFF, sizeof(*body),
-                                 lustre_swab_llogd_body);
-        if (body == NULL) {
-                CERROR ("Can't unpack llogd_body\n");
+        body = req_capsule_server_get(&req->rq_pill, &RMF_LLOGD_BODY);
+        if (body == NULL)
                 GOTO(out, rc =-EFAULT);
-        }
 
-        ptr = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF + 1, len);
-        if (ptr == NULL) {
-                CERROR ("Can't unpack bitmap\n");
+        ptr = req_capsule_server_get(&req->rq_pill, &RMF_EADATA);
+        if (ptr == NULL)
                 GOTO(out, rc =-EFAULT);
-        }
 
         memcpy(buf, ptr, len);
-
+        EXIT;
 out:
-        if (req)
-                ptlrpc_req_finished(req);
-        RETURN(rc);
+        ptlrpc_req_finished(req);
+        return rc;
 }
 
 static int llog_client_read_header(struct llog_handle *handle)
 {
-        struct obd_import *imp = handle->lgh_ctxt->loc_imp;
         struct ptlrpc_request *req = NULL;
-        struct llogd_body *body;
-        struct llog_log_hdr *hdr;
-        struct llog_rec_hdr *llh_hdr;
-        int size[2] = { sizeof(struct ptlrpc_body), sizeof(*body) };
-        int repsize[2] = { sizeof(struct ptlrpc_body), sizeof(*hdr) };
-        int rc;
+        struct llogd_body     *body;
+        struct llog_log_hdr   *hdr;
+        struct llog_rec_hdr   *llh_hdr;
+        int                    rc;
         ENTRY;
 
-        req = ptlrpc_prep_req(imp, LUSTRE_LOG_VERSION,
-                              LLOG_ORIGIN_HANDLE_READ_HEADER, 2, size, NULL);
-        if (!req)
-                GOTO(out, rc = -ENOMEM);
+        req = ptlrpc_request_alloc_pack(handle->lgh_ctxt->loc_imp,
+                                        &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER,
+                                        LUSTRE_LOG_VERSION,
+                                        LLOG_ORIGIN_HANDLE_READ_HEADER);
+        if (req == NULL)
+                RETURN(-ENOMEM);
 
-        body = lustre_msg_buf(req->rq_reqmsg, REQ_REC_OFF, sizeof(*body));
+        body = req_capsule_client_get(&req->rq_pill, &RMF_LLOGD_BODY);
         body->lgd_logid = handle->lgh_id;
         body->lgd_ctxt_idx = handle->lgh_ctxt->loc_idx - 1;
         body->lgd_llh_flags = handle->lgh_hdr->llh_flags;
 
-        ptlrpc_req_set_repsize(req, 2, repsize);
+        ptlrpc_request_set_replen(req);
         rc = ptlrpc_queue_wait(req);
         if (rc)
                 GOTO(out, rc);
 
-        hdr = lustre_swab_repbuf(req, REPLY_REC_OFF, sizeof(*hdr),
-                                 lustre_swab_llog_hdr);
-        if (hdr == NULL) {
-                CERROR ("Can't unpack llog_hdr\n");
+        hdr = req_capsule_server_get(&req->rq_pill, &RMF_LLOG_LOG_HDR);
+        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;
@@ -297,11 +285,10 @@ static int llog_client_read_header(struct llog_handle *handle)
                 CERROR("you may need to re-run lconf --write_conf.\n");
                 rc = -EIO;
         }
-
+        EXIT;
 out:
-        if (req)
-                ptlrpc_req_finished(req);
-        RETURN(rc);
+        ptlrpc_req_finished(req);
+        return rc;
 }
 
 static int llog_client_close(struct llog_handle *handle)