X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Fmdc%2Fmdc_reint.c;h=d09227029db1d6c815f2323acd6343d3104cb392;hb=f98de6c88bbea09960f6019c7ad92a03a2b44913;hp=9f67163fdbb7c4874e8dc36ca25debc66b9db4fb;hpb=a93f57342d4ab3f77a1f8519ef0e659a10c1e4b2;p=fs%2Flustre-release.git diff --git a/lustre/mdc/mdc_reint.c b/lustre/mdc/mdc_reint.c index 9f67163..d092270 100644 --- a/lustre/mdc/mdc_reint.c +++ b/lustre/mdc/mdc_reint.c @@ -1,97 +1,238 @@ -/* - * Copryright (C) 2001 Cluster File Systems, Inc. +/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- + * vim:expandtab:shiftwidth=8:tabstop=8: * + * Copyright (C) 2001-2003 Cluster File Systems, Inc. + * + * This file is part of Lustre, http://www.sf.net/projects/lustre/ + * + * Lustre is free software; you can redistribute it and/or + * modify it under the terms of version 2 of the GNU General Public + * License as published by the Free Software Foundation. + * + * Lustre 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 for more details. + * + * You should have received a copy of the GNU General Public License + * along with Lustre; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ -#define EXPORT_SYMTAB - -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include - -#include -#include -#include -#include -#include -#include - -#include -#include -#include +#ifndef EXPORT_SYMTAB +# define EXPORT_SYMTAB +#endif +#define DEBUG_SUBSYSTEM S_MDC + +#ifdef __KERNEL__ +# include +# include +# include +#else +# include +#endif + +#include #include +#include "mdc_internal.h" + +/* mdc_setattr does its own semaphore handling */ +static int mdc_reint(struct ptlrpc_request *request, + struct mdc_rpc_lock *rpc_lock, int level) +{ + int rc; + + + request->rq_send_state = level; + + mdc_get_rpc_lock(rpc_lock, NULL); + rc = ptlrpc_queue_wait(request); + mdc_put_rpc_lock(rpc_lock, NULL); + if (rc) + CDEBUG(D_INFO, "error in handling %d\n", rc); + else if (!lustre_swab_repbuf(request, 0, sizeof(struct mds_body), + lustre_swab_mds_body)) { + CERROR ("Can't unpack mds_body\n"); + rc = -EPROTO; + } + return rc; +} + +/* If mdc_setattr is called with an 'iattr', then it is a normal RPC that + * should take the normal semaphore and go to the normal portal. + * + * If it is called with iattr->ia_valid & ATTR_FROM_OPEN, then it is a + * magic open-path setattr that should take the setattr semaphore and + * go to the setattr portal. */ +int mdc_setattr(struct obd_export *exp, struct mdc_op_data *data, + struct iattr *iattr, void *ea, int ealen, void *ea2, int ea2len, + struct ptlrpc_request **request) +{ + struct ptlrpc_request *req; + struct mds_rec_setattr *rec; + struct mdc_rpc_lock *rpc_lock; + struct obd_device *obd = exp->exp_obd; + int rc, bufcount = 1, size[3] = {sizeof(*rec), ealen, ea2len}; + ENTRY; + + LASSERT(iattr != NULL); + + if (ealen > 0) { + bufcount = 2; + if (ea2len > 0) + bufcount = 3; + } + + req = ptlrpc_prep_req(class_exp2cliimp(exp), MDS_REINT, bufcount, + size, NULL); + if (req == NULL) + RETURN(-ENOMEM); + + if (iattr->ia_valid & ATTR_FROM_OPEN) { + req->rq_request_portal = MDS_SETATTR_PORTAL; //XXX FIXME bug 249 + rpc_lock = obd->u.cli.cl_setattr_lock; + } else { + rpc_lock = obd->u.cli.cl_rpc_lock; + } + + if (iattr->ia_valid & (ATTR_MTIME | ATTR_CTIME)) + CDEBUG(D_INODE, "setting mtime %lu, ctime %lu\n", + LTIME_S(iattr->ia_mtime), LTIME_S(iattr->ia_ctime)); + mdc_setattr_pack(req, data, iattr, ea, ealen, ea2, ea2len); + + size[0] = sizeof(struct mds_body); + req->rq_replen = lustre_msg_size(1, size); + + rc = mdc_reint(req, rpc_lock, LUSTRE_IMP_FULL); + *request = req; + if (rc == -ERESTARTSYS) + rc = 0; + + RETURN(rc); +} + +int mdc_create(struct obd_export *exp, struct mdc_op_data *op_data, + const void *data, int datalen, int mode, __u32 uid, __u32 gid, + __u64 rdev, struct ptlrpc_request **request) +{ + struct obd_device *obd = exp->exp_obd; + struct ptlrpc_request *req; + int rc, size[3] = {sizeof(struct mds_rec_create), op_data->namelen + 1}; + int level, bufcount = 2; + ENTRY; + + if (data && datalen) { + size[bufcount] = datalen; + bufcount++; + } + + req = ptlrpc_prep_req(class_exp2cliimp(exp), MDS_REINT, bufcount, + size, NULL); + if (req == NULL) + RETURN(-ENOMEM); + + /* mdc_create_pack fills msg->bufs[1] with name + * and msg->bufs[2] with tgt, for symlinks or lov MD data */ + mdc_create_pack(req, 0, op_data, mode, rdev, data, datalen); + + size[0] = sizeof(struct mds_body); + req->rq_replen = lustre_msg_size(1, size); + + level = LUSTRE_IMP_FULL; + resend: + rc = mdc_reint(req, obd->u.cli.cl_rpc_lock, level); + /* Resend if we were told to. */ + if (rc == -ERESTARTSYS) { + level = LUSTRE_IMP_RECOVER; + goto resend; + } + + if (!rc) + mdc_store_inode_generation(req, 0, 0); + + *request = req; + RETURN(rc); +} -extern int mdc_reint(struct mds_request *request); -extern struct mds_request *mds_prep_req(int opcode, int namelen, char *name, int tgtlen, char *tgt); +int mdc_unlink(struct obd_export *exp, struct mdc_op_data *data, + struct ptlrpc_request **request) +{ + struct obd_device *obddev = class_exp2obd(exp); + struct ptlrpc_request *req = *request; + int rc, size[2] = {sizeof(struct mds_rec_unlink), data->namelen + 1}; + ENTRY; + + LASSERT(req == NULL); + req = ptlrpc_prep_req(class_exp2cliimp(exp), MDS_REINT, 2, size, + NULL); + if (req == NULL) + RETURN(-ENOMEM); + *request = req; + + size[0] = sizeof(struct mds_body); + size[1] = obddev->u.cli.cl_max_mds_easize; + size[2] = obddev->u.cli.cl_max_mds_cookiesize; + req->rq_replen = lustre_msg_size(3, size); + + mdc_unlink_pack(req, 0, data); + + rc = mdc_reint(req, obddev->u.cli.cl_rpc_lock, LUSTRE_IMP_FULL); + if (rc == -ERESTARTSYS) + rc = 0; + RETURN(rc); +} -int mdc_setattr(struct inode *inode, struct iattr *iattr, - struct mds_rep **rep, struct mds_rep_hdr **hdr) +int mdc_link(struct obd_export *exp, struct mdc_op_data *data, + struct ptlrpc_request **request) { - int rc; - struct mds_request *request; - struct mds_rec_setattr *rec; - - request = mds_prep_req(MDS_REINT, 0, NULL, sizeof(*rec), NULL); - if (!request) { - printk("mdc request: cannot pack\n"); - return -ENOMEM; - } - - rec = mds_req_tgt(request->rq_req); - mds_setattr_pack(rec, inode, iattr); - request->rq_req->opcode = HTON__u32(REINT_SETATTR); - - rc = mdc_reint(request); - - if (rep) { - *rep = request->rq_rep; - } - if (hdr) { - *hdr = request->rq_rephdr; - } - - kfree(request); - return rc; + struct obd_device *obd = exp->exp_obd; + struct ptlrpc_request *req; + int rc, size[2] = {sizeof(struct mds_rec_link), data->namelen + 1}; + ENTRY; + + req = ptlrpc_prep_req(class_exp2cliimp(exp), MDS_REINT, 2, size, + NULL); + if (req == NULL) + RETURN(-ENOMEM); + + mdc_link_pack(req, 0, data); + + size[0] = sizeof(struct mds_body); + req->rq_replen = lustre_msg_size(1, size); + + rc = mdc_reint(req, obd->u.cli.cl_rpc_lock, LUSTRE_IMP_FULL); + *request = req; + if (rc == -ERESTARTSYS) + rc = 0; + + RETURN(rc); } -int mdc_create(struct inode *dir, const char *name, int namelen, - int mode, __u64 id, __u32 uid, __u32 gid, __u64 time, - struct mds_rep **rep, struct mds_rep_hdr **hdr) +int mdc_rename(struct obd_export *exp, struct mdc_op_data *data, + const char *old, int oldlen, const char *new, int newlen, + struct ptlrpc_request **request) { - int rc; - struct mds_request *request; - struct mds_rec_create *rec; - - request = mds_prep_req(MDS_REINT, 0, NULL, - sizeof(*rec) + size_round(namelen + 1), - NULL); - if (!request) { - printk("mdc_create: cannot pack\n"); - return -ENOMEM; - } - - rec = mds_req_tgt(request->rq_req); - mds_create_pack(rec, dir, name, namelen, mode, id, uid, gid, time); - - rc = mdc_reint(request); - - if (rep) { - *rep = request->rq_rep; - } - if (hdr) { - *hdr = request->rq_rephdr; - } - - kfree(request); - return rc; + struct obd_device *obd = exp->exp_obd; + struct ptlrpc_request *req; + int rc, size[3] = {sizeof(struct mds_rec_rename), oldlen + 1, + newlen + 1}; + ENTRY; + + req = ptlrpc_prep_req(class_exp2cliimp(exp), MDS_REINT, 3, size, + NULL); + if (req == NULL) + RETURN(-ENOMEM); + + mdc_rename_pack(req, 0, data, old, oldlen, new, newlen); + + size[0] = sizeof(struct mds_body); + size[1] = obd->u.cli.cl_max_mds_easize; + req->rq_replen = lustre_msg_size(2, size); + + rc = mdc_reint(req, obd->u.cli.cl_rpc_lock, LUSTRE_IMP_FULL); + *request = req; + if (rc == -ERESTARTSYS) + rc = 0; + + RETURN(rc); }