+++ /dev/null
-/*
- * GPL HEADER START
- *
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 only,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License version 2 for more details (a copy is included
- * in the LICENSE file that accompanied this code).
- *
- * 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.
- *
- * GPL HEADER END
- */
-/*
- * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
- * Use is subject to license terms.
- *
- * Copyright (c) 2011, 2012, Intel Corporation.
- */
-/*
- * This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
- *
- * lustre/ptlrpc/llog_server.c
- *
- * remote api for llog - server side
- *
- * Author: Andreas Dilger <adilger@clusterfs.com>
- */
-
-#define DEBUG_SUBSYSTEM S_LOG
-
-
-#include <obd_class.h>
-#include <lustre_log.h>
-#include <lustre_net.h>
-#include <lustre_fsfilt.h>
-
-#if defined(LUSTRE_LOG_SERVER)
-static int llog_origin_close(const struct lu_env *env, struct llog_handle *lgh)
-{
- if (lgh->lgh_hdr != NULL && lgh->lgh_hdr->llh_flags & LLOG_F_IS_CAT)
- return llog_cat_close(env, lgh);
- else
- return llog_close(env, lgh);
-}
-
-/* Only open is supported, no new llog can be created remotely */
-int llog_origin_handle_open(struct ptlrpc_request *req)
-{
- struct obd_export *exp = req->rq_export;
- struct obd_device *obd = exp->exp_obd;
- struct obd_device *disk_obd;
- struct lvfs_run_ctxt saved;
- struct llog_handle *loghandle;
- struct llogd_body *body;
- struct llog_logid *logid = NULL;
- struct llog_ctxt *ctxt;
- char *name = NULL;
- int rc;
-
- body = req_capsule_client_get(&req->rq_pill, &RMF_LLOGD_BODY);
- if (body == NULL)
- return -EFAULT;
-
- if (ostid_id(&body->lgd_logid.lgl_oi) > 0)
- logid = &body->lgd_logid;
-
- if (req_capsule_field_present(&req->rq_pill, &RMF_NAME, RCL_CLIENT)) {
- name = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
- if (name == NULL)
- return -EFAULT;
- CDEBUG(D_INFO, "%s: opening log %s\n", obd->obd_name, name);
- }
-
- ctxt = llog_get_context(obd, body->lgd_ctxt_idx);
- if (ctxt == NULL) {
- CDEBUG(D_WARNING, "%s: no ctxt. group=%p idx=%d name=%s\n",
- obd->obd_name, &obd->obd_olg, body->lgd_ctxt_idx, name);
- return -ENODEV;
- }
- disk_obd = ctxt->loc_exp->exp_obd;
- push_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
-
- rc = llog_open(req->rq_svc_thread->t_env, ctxt, &loghandle, logid,
- name, LLOG_OPEN_EXISTS);
- if (rc)
- GOTO(out_pop, rc);
-
- rc = req_capsule_server_pack(&req->rq_pill);
- if (rc)
- GOTO(out_close, rc = -ENOMEM);
-
- body = req_capsule_server_get(&req->rq_pill, &RMF_LLOGD_BODY);
- body->lgd_logid = loghandle->lgh_id;
-
-out_close:
- llog_origin_close(req->rq_svc_thread->t_env, loghandle);
-out_pop:
- pop_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
- llog_ctxt_put(ctxt);
- return rc;
-}
-EXPORT_SYMBOL(llog_origin_handle_open);
-
-int llog_origin_handle_destroy(struct ptlrpc_request *req)
-{
- struct obd_device *disk_obd;
- struct lvfs_run_ctxt saved;
- struct llogd_body *body;
- struct llog_logid *logid = NULL;
- struct llog_ctxt *ctxt;
- int rc;
-
- body = req_capsule_client_get(&req->rq_pill, &RMF_LLOGD_BODY);
- if (body == NULL)
- return -EFAULT;
-
- if (ostid_id(&body->lgd_logid.lgl_oi) > 0)
- logid = &body->lgd_logid;
-
- if (!(body->lgd_llh_flags & LLOG_F_IS_PLAIN))
- CERROR("%s: wrong llog flags %x\n",
- req->rq_export->exp_obd->obd_name, body->lgd_llh_flags);
-
- ctxt = llog_get_context(req->rq_export->exp_obd, body->lgd_ctxt_idx);
- if (ctxt == NULL)
- return -ENODEV;
-
- disk_obd = ctxt->loc_exp->exp_obd;
- push_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
-
- rc = req_capsule_server_pack(&req->rq_pill);
- /* erase only if no error and logid is valid */
- if (rc == 0)
- rc = llog_erase(req->rq_svc_thread->t_env, ctxt, logid, NULL);
- pop_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
- llog_ctxt_put(ctxt);
- return rc;
-}
-EXPORT_SYMBOL(llog_origin_handle_destroy);
-
-int llog_origin_handle_next_block(struct ptlrpc_request *req)
-{
- struct obd_device *disk_obd;
- struct llog_handle *loghandle;
- struct llogd_body *body;
- struct llogd_body *repbody;
- struct lvfs_run_ctxt saved;
- struct llog_ctxt *ctxt;
- __u32 flags;
- void *ptr;
- int rc;
-
- body = req_capsule_client_get(&req->rq_pill, &RMF_LLOGD_BODY);
- if (body == NULL)
- return -EFAULT;
-
- ctxt = llog_get_context(req->rq_export->exp_obd, body->lgd_ctxt_idx);
- if (ctxt == NULL)
- return -ENODEV;
-
- disk_obd = ctxt->loc_exp->exp_obd;
- push_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
-
- rc = llog_open(req->rq_svc_thread->t_env, ctxt, &loghandle,
- &body->lgd_logid, NULL, LLOG_OPEN_EXISTS);
- if (rc)
- GOTO(out_pop, rc);
-
- flags = body->lgd_llh_flags;
- rc = llog_init_handle(req->rq_svc_thread->t_env, loghandle, flags,
- NULL);
- if (rc)
- GOTO(out_close, rc);
-
- req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_SERVER,
- LLOG_CHUNK_SIZE);
- rc = req_capsule_server_pack(&req->rq_pill);
- if (rc)
- GOTO(out_close, rc = -ENOMEM);
-
- repbody = req_capsule_server_get(&req->rq_pill, &RMF_LLOGD_BODY);
- *repbody = *body;
-
- ptr = req_capsule_server_get(&req->rq_pill, &RMF_EADATA);
- rc = llog_next_block(req->rq_svc_thread->t_env, loghandle,
- &repbody->lgd_saved_index, repbody->lgd_index,
- &repbody->lgd_cur_offset, ptr, LLOG_CHUNK_SIZE);
- if (rc)
- GOTO(out_close, rc);
-out_close:
- llog_origin_close(req->rq_svc_thread->t_env, loghandle);
-out_pop:
- pop_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
- llog_ctxt_put(ctxt);
- return rc;
-}
-EXPORT_SYMBOL(llog_origin_handle_next_block);
-
-int llog_origin_handle_prev_block(struct ptlrpc_request *req)
-{
- struct llog_handle *loghandle;
- struct llogd_body *body;
- struct llogd_body *repbody;
- struct obd_device *disk_obd;
- struct lvfs_run_ctxt saved;
- struct llog_ctxt *ctxt;
- __u32 flags;
- void *ptr;
- int rc;
-
- body = req_capsule_client_get(&req->rq_pill, &RMF_LLOGD_BODY);
- if (body == NULL)
- return -EFAULT;
-
- ctxt = llog_get_context(req->rq_export->exp_obd, body->lgd_ctxt_idx);
- if (ctxt == NULL)
- return -ENODEV;
-
- disk_obd = ctxt->loc_exp->exp_obd;
- push_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
-
- rc = llog_open(req->rq_svc_thread->t_env, ctxt, &loghandle,
- &body->lgd_logid, NULL, LLOG_OPEN_EXISTS);
- if (rc)
- GOTO(out_pop, rc);
-
- flags = body->lgd_llh_flags;
- rc = llog_init_handle(req->rq_svc_thread->t_env, loghandle, flags,
- NULL);
- if (rc)
- GOTO(out_close, rc);
-
- req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_SERVER,
- LLOG_CHUNK_SIZE);
- rc = req_capsule_server_pack(&req->rq_pill);
- if (rc)
- GOTO(out_close, rc = -ENOMEM);
-
- repbody = req_capsule_server_get(&req->rq_pill, &RMF_LLOGD_BODY);
- *repbody = *body;
-
- ptr = req_capsule_server_get(&req->rq_pill, &RMF_EADATA);
- rc = llog_prev_block(req->rq_svc_thread->t_env, loghandle,
- body->lgd_index, ptr, LLOG_CHUNK_SIZE);
- if (rc)
- GOTO(out_close, rc);
-
-out_close:
- llog_origin_close(req->rq_svc_thread->t_env, loghandle);
-out_pop:
- pop_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
- llog_ctxt_put(ctxt);
- return rc;
-}
-EXPORT_SYMBOL(llog_origin_handle_prev_block);
-
-int llog_origin_handle_read_header(struct ptlrpc_request *req)
-{
- struct obd_device *disk_obd;
- struct llog_handle *loghandle;
- struct llogd_body *body;
- struct llog_log_hdr *hdr;
- struct lvfs_run_ctxt saved;
- struct llog_ctxt *ctxt;
- __u32 flags;
- int rc;
-
- body = req_capsule_client_get(&req->rq_pill, &RMF_LLOGD_BODY);
- if (body == NULL)
- return -EFAULT;
-
- ctxt = llog_get_context(req->rq_export->exp_obd, body->lgd_ctxt_idx);
- if (ctxt == NULL)
- return -ENODEV;
-
- disk_obd = ctxt->loc_exp->exp_obd;
- push_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
-
- rc = llog_open(req->rq_svc_thread->t_env, ctxt, &loghandle,
- &body->lgd_logid, NULL, LLOG_OPEN_EXISTS);
- if (rc)
- GOTO(out_pop, rc);
-
- /*
- * llog_init_handle() reads the llog header
- */
- flags = body->lgd_llh_flags;
- rc = llog_init_handle(req->rq_svc_thread->t_env, loghandle, flags,
- NULL);
- if (rc)
- GOTO(out_close, rc);
- flags = loghandle->lgh_hdr->llh_flags;
-
- rc = req_capsule_server_pack(&req->rq_pill);
- if (rc)
- GOTO(out_close, rc = -ENOMEM);
-
- hdr = req_capsule_server_get(&req->rq_pill, &RMF_LLOG_LOG_HDR);
- *hdr = *loghandle->lgh_hdr;
-out_close:
- llog_origin_close(req->rq_svc_thread->t_env, loghandle);
-out_pop:
- pop_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
- llog_ctxt_put(ctxt);
- return rc;
-}
-EXPORT_SYMBOL(llog_origin_handle_read_header);
-
-int llog_origin_handle_close(struct ptlrpc_request *req)
-{
- /* Nothing to do */
- return 0;
-}
-EXPORT_SYMBOL(llog_origin_handle_close);
-
-int llog_origin_handle_cancel(struct ptlrpc_request *req)
-{
- int num_cookies, rc = 0, err, i, failed = 0;
- struct obd_device *disk_obd;
- struct llog_cookie *logcookies;
- struct llog_ctxt *ctxt = NULL;
- struct lvfs_run_ctxt saved;
- struct llog_handle *cathandle;
- struct inode *inode;
- void *handle;
-
- logcookies = req_capsule_client_get(&req->rq_pill, &RMF_LOGCOOKIES);
- num_cookies = req_capsule_get_size(&req->rq_pill, &RMF_LOGCOOKIES,
- RCL_CLIENT) / sizeof(*logcookies);
- if (logcookies == NULL || num_cookies == 0) {
- DEBUG_REQ(D_HA, req, "No llog cookies sent");
- return -EFAULT;
- }
-
- ctxt = llog_get_context(req->rq_export->exp_obd,
- logcookies->lgc_subsys);
- if (ctxt == NULL)
- return -ENODEV;
-
- disk_obd = ctxt->loc_exp->exp_obd;
- push_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
- for (i = 0; i < num_cookies; i++, logcookies++) {
- cathandle = ctxt->loc_handle;
- LASSERT(cathandle != NULL);
- inode = cathandle->lgh_file->f_dentry->d_inode;
-
- handle = fsfilt_start_log(disk_obd, inode,
- FSFILT_OP_CANCEL_UNLINK, NULL, 1);
- if (IS_ERR(handle)) {
- CERROR("fsfilt_start_log() failed: %ld\n",
- PTR_ERR(handle));
- GOTO(pop_ctxt, rc = PTR_ERR(handle));
- }
-
- rc = llog_cat_cancel_records(req->rq_svc_thread->t_env,
- cathandle, 1, logcookies);
-
- /*
- * Do not raise -ENOENT errors for resent rpcs. This rec already
- * might be killed.
- */
- if (rc == -ENOENT &&
- (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT)) {
- /*
- * Do not change this message, reply-single.sh test_59b
- * expects to find this in log.
- */
- CDEBUG(D_RPCTRACE, "RESENT cancel req %p - ignored\n",
- req);
- rc = 0;
- } else if (rc == 0) {
- CDEBUG(D_RPCTRACE, "Canceled %d llog-records\n",
- num_cookies);
- }
-
- err = fsfilt_commit(disk_obd, inode, handle, 0);
- if (err) {
- CERROR("Error committing transaction: %d\n", err);
- if (!rc)
- rc = err;
- failed++;
- GOTO(pop_ctxt, rc);
- } else if (rc)
- failed++;
- }
- GOTO(pop_ctxt, rc);
-pop_ctxt:
- pop_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
- if (rc)
- CERROR("Cancel %d of %d llog-records failed: %d\n",
- failed, num_cookies, rc);
-
- llog_ctxt_put(ctxt);
- return rc;
-}
-EXPORT_SYMBOL(llog_origin_handle_cancel);
-
-#else /* !__KERNEL__ */
-int llog_origin_handle_open(struct ptlrpc_request *req)
-{
- LBUG();
- return 0;
-}
-
-int llog_origin_handle_destroy(struct ptlrpc_request *req)
-{
- LBUG();
- return 0;
-}
-
-int llog_origin_handle_next_block(struct ptlrpc_request *req)
-{
- LBUG();
- return 0;
-}
-int llog_origin_handle_prev_block(struct ptlrpc_request *req)
-{
- LBUG();
- return 0;
-}
-int llog_origin_handle_read_header(struct ptlrpc_request *req)
-{
- LBUG();
- return 0;
-}
-int llog_origin_handle_close(struct ptlrpc_request *req)
-{
- LBUG();
- return 0;
-}
-int llog_origin_handle_cancel(struct ptlrpc_request *req)
-{
- LBUG();
- return 0;
-}
-#endif
projects / openwrt / staging / blogic.git / commitdiff