+++ /dev/null
-#ifndef __LVFS_H__
-#define __LVFS_H__
-
-#if defined __LINUX__ && defined __KERNEL__
-#include <linux/lvfs_linux.h>
-#endif
-
-#ifdef LIBLUSTRE
-#include <lvfs_user_fs.h>
-#endif
-
-/* simple.c */
-struct obd_ucred {
- __u32 ouc_fsuid;
- __u32 ouc_fsgid;
- __u32 ouc_cap;
- __u32 ouc_suppgid1;
- __u32 ouc_suppgid2;
-};
-
-#define OBD_RUN_CTXT_MAGIC 0xC0FFEEAA
-#define OBD_CTXT_DEBUG /* development-only debugging */
-struct obd_run_ctxt {
- struct vfsmount *pwdmnt;
- struct dentry *pwd;
- mm_segment_t fs;
- struct obd_ucred ouc;
- int ngroups;
-#ifdef OBD_CTXT_DEBUG
- __u32 magic;
-#endif
-};
-
-
-#ifdef OBD_CTXT_DEBUG
-#define OBD_SET_CTXT_MAGIC(ctxt) (ctxt)->magic = OBD_RUN_CTXT_MAGIC
-#else
-#define OBD_SET_CTXT_MAGIC(ctxt) do {} while(0)
-#endif
-
-#ifdef __KERNEL__
-
-void push_ctxt(struct obd_run_ctxt *save, struct obd_run_ctxt *new_ctx,
- struct obd_ucred *cred);
-void pop_ctxt(struct obd_run_ctxt *saved, struct obd_run_ctxt *new_ctx,
- struct obd_ucred *cred);
-struct dentry *simple_mkdir(struct dentry *dir, char *name, int mode);
-struct dentry *simple_mknod(struct dentry *dir, char *name, int mode);
-int lustre_fread(struct file *file, void *buf, int len, loff_t *off);
-int lustre_fwrite(struct file *file, const void *buf, int len, loff_t *off);
-int lustre_fsync(struct file *file);
-
-static inline void l_dput(struct dentry *de)
-{
- if (!de || IS_ERR(de))
- return;
- //shrink_dcache_parent(de);
- LASSERT(atomic_read(&de->d_count) > 0);
- dput(de);
-}
-
-/* We need to hold the inode semaphore over the dcache lookup itself, or we
- * run the risk of entering the filesystem lookup path concurrently on SMP
- * systems, and instantiating two inodes for the same entry. We still
- * protect against concurrent addition/removal races with the DLM locking.
- */
-static inline struct dentry *ll_lookup_one_len(char *fid_name,
- struct dentry *dparent,
- int fid_namelen)
-{
- struct dentry *dchild;
-
- down(&dparent->d_inode->i_sem);
- dchild = lookup_one_len(fid_name, dparent, fid_namelen);
- up(&dparent->d_inode->i_sem);
-
- return dchild;
-}
-
-static inline void ll_sleep(int t)
-{
- set_current_state(TASK_INTERRUPTIBLE);
- schedule_timeout(t * HZ);
- set_current_state(TASK_RUNNING);
-}
-#endif
-
-#define LL_FID_NAMELEN (16 + 1 + 8 + 1)
-static inline int ll_fid2str(char *str, __u64 id, __u32 generation)
-{
- return sprintf(str, "%llx:%08x", (unsigned long long)id, generation);
-}
-
-#endif
+++ /dev/null
-#ifndef __LVFS_LINUX_H__
-#define __LVFS_LINUX_H__
-
-#define l_file file
-#define l_dentry dentry
-#define l_inode inode
-
-#define l_dentry_open dentry_open
-#define l_filp_open filp_open
-
-#endif
+++ /dev/null
-.Xrefs
-config.log
-config.status
-configure
-Makefile
-Makefile.in
-.deps
-TAGS
-.*.cmd
+++ /dev/null
-# Copyright (C) 2001 Cluster File Systems, Inc.
-#
-# This code is issued under the GNU General Public License.
-# See the file COPYING in this distribution
-DEFS=
-MODULE = lvfs
-
-
-if EXTN
-FSMOD = fsfilt_extN
-else
-FSMOD = fsfilt_ext3
-endif
-
-
-if LIBLUSTRE
-lib_LIBRARIES = liblvfs.a
-liblvfs_a_SOURCES = lvfs_user_fs.c
-
-#if MYSQL
-#liblvfs_a_SOURCES += lvfs_user_mysql.c
-#endif
-
-else
-modulefs_DATA = lvfs.o $(FSMOD).o fsfilt_reiserfs.o
-
-EXTRA_PROGRAMS = lvfs $(FSMOD) fsfilt_reiserfs
-lvfs_SOURCES = lvfs_linux.c fsfilt.c
-endif
-
-
-include $(top_srcdir)/Rules
+++ /dev/null
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
-#define DEBUG_SUBSYSTEM S_FILTER
-
-#include <linux/fs.h>
-#include <linux/jbd.h>
-#include <linux/module.h>
-#include <linux/kmod.h>
-#include <linux/slab.h>
-#include <linux/kp30.h>
-#include <linux/lustre_fsfilt.h>
-
-LIST_HEAD(fsfilt_types);
-
-static struct fsfilt_operations *fsfilt_search_type(const char *type)
-{
- struct fsfilt_operations *found;
- struct list_head *p;
-
- list_for_each(p, &fsfilt_types) {
- found = list_entry(p, struct fsfilt_operations, fs_list);
- if (!strcmp(found->fs_type, type)) {
- return found;
- }
- }
- return NULL;
-}
-
-int fsfilt_register_ops(struct fsfilt_operations *fs_ops)
-{
- struct fsfilt_operations *found;
-
- /* lock fsfilt_types list */
- if ((found = fsfilt_search_type(fs_ops->fs_type))) {
- if (found != fs_ops) {
- CERROR("different operations for type %s\n",
- fs_ops->fs_type);
- /* unlock fsfilt_types list */
- RETURN(-EEXIST);
- }
- } else {
- PORTAL_MODULE_USE;
- list_add(&fs_ops->fs_list, &fsfilt_types);
- }
-
- /* unlock fsfilt_types list */
- return 0;
-}
-
-void fsfilt_unregister_ops(struct fsfilt_operations *fs_ops)
-{
- struct list_head *p;
-
- /* lock fsfilt_types list */
- list_for_each(p, &fsfilt_types) {
- struct fsfilt_operations *found;
-
- found = list_entry(p, typeof(*found), fs_list);
- if (found == fs_ops) {
- list_del(p);
- PORTAL_MODULE_UNUSE;
- break;
- }
- }
- /* unlock fsfilt_types list */
-}
-
-struct fsfilt_operations *fsfilt_get_ops(const char *type)
-{
- struct fsfilt_operations *fs_ops;
-
- /* lock fsfilt_types list */
- if (!(fs_ops = fsfilt_search_type(type))) {
- char name[32];
- int rc;
-
- snprintf(name, sizeof(name) - 1, "fsfilt_%s", type);
- name[sizeof(name) - 1] = '\0';
-
- if ((rc = request_module(name))) {
- fs_ops = fsfilt_search_type(type);
- CDEBUG(D_INFO, "Loaded module '%s'\n", name);
- if (!fs_ops)
- rc = -ENOENT;
- }
-
- if (rc) {
- CERROR("Can't find fsfilt_%s interface\n", name);
- RETURN(ERR_PTR(rc));
- /* unlock fsfilt_types list */
- }
- }
- try_module_get(fs_ops->fs_owner);
- /* unlock fsfilt_types list */
-
- return fs_ops;
-}
-
-void fsfilt_put_ops(struct fsfilt_operations *fs_ops)
-{
- module_put(fs_ops->fs_owner);
-}
-
-
-EXPORT_SYMBOL(fsfilt_register_ops);
-EXPORT_SYMBOL(fsfilt_unregister_ops);
-EXPORT_SYMBOL(fsfilt_get_ops);
-EXPORT_SYMBOL(fsfilt_put_ops);
+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * lustre/lib/fsfilt_ext3.c
- * Lustre filesystem abstraction routines
- *
- * Copyright (C) 2002, 2003 Cluster File Systems, Inc.
- * Author: Andreas Dilger <adilger@clusterfs.com>
- *
- * This file is part of Lustre, http://www.lustre.org.
- *
- * 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 DEBUG_SUBSYSTEM S_FILTER
-
-#include <linux/fs.h>
-#include <linux/jbd.h>
-#include <linux/slab.h>
-#include <linux/pagemap.h>
-#include <linux/quotaops.h>
-#include <linux/ext3_fs.h>
-#include <linux/ext3_jbd.h>
-#include <linux/version.h>
-/* XXX ugh */
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
- #include <linux/ext3_xattr.h>
-#else
- #include <linux/../../fs/ext3/xattr.h>
-#endif
-#include <linux/kp30.h>
-#include <linux/lustre_fsfilt.h>
-#include <linux/obd.h>
-#include <linux/obd_class.h>
-#include <linux/module.h>
-
-static kmem_cache_t *fcb_cache;
-static atomic_t fcb_cache_count = ATOMIC_INIT(0);
-
-struct fsfilt_cb_data {
- struct journal_callback cb_jcb; /* jbd private data - MUST BE FIRST */
- fsfilt_cb_t cb_func; /* MDS/OBD completion function */
- struct obd_device *cb_obd; /* MDS/OBD completion device */
- __u64 cb_last_rcvd; /* MDS/OST last committed operation */
- void *cb_data; /* MDS/OST completion function data */
-};
-
-#define EXT3_XATTR_INDEX_LUSTRE 5
-#define XATTR_LUSTRE_MDS_OBJID "system.lustre_mds_objid"
-
-/*
- * We don't currently need any additional blocks for rmdir and
- * unlink transactions because we are storing the OST oa_id inside
- * the inode (which we will be changing anyways as part of this
- * transaction).
- */
-static void *fsfilt_ext3_start(struct inode *inode, int op, void *desc_private)
-{
- /* For updates to the last recieved file */
- int nblocks = EXT3_DATA_TRANS_BLOCKS;
- void *handle;
-
- LASSERT(current->journal_info == NULL);
-
- switch(op) {
- case FSFILT_OP_CREATE_LOG:
- nblocks += EXT3_INDEX_EXTRA_TRANS_BLOCKS+EXT3_DATA_TRANS_BLOCKS;
- op = FSFILT_OP_CREATE;
- break;
- case FSFILT_OP_UNLINK_LOG:
- nblocks += EXT3_INDEX_EXTRA_TRANS_BLOCKS+EXT3_DATA_TRANS_BLOCKS;
- op = FSFILT_OP_UNLINK;
- break;
- }
-
- switch(op) {
- case FSFILT_OP_RMDIR:
- case FSFILT_OP_UNLINK:
- nblocks += EXT3_DELETE_TRANS_BLOCKS;
- break;
- case FSFILT_OP_RENAME:
- /* modify additional directory */
- nblocks += EXT3_DATA_TRANS_BLOCKS;
- /* no break */
- case FSFILT_OP_SYMLINK:
- /* additional block + block bitmap + GDT for long symlink */
- nblocks += 3;
- /* no break */
- case FSFILT_OP_CREATE:
- case FSFILT_OP_MKDIR:
- case FSFILT_OP_MKNOD:
- /* modify one inode + block bitmap + GDT */
- nblocks += 3;
- /* no break */
- case FSFILT_OP_LINK:
- /* modify parent directory */
- nblocks += EXT3_INDEX_EXTRA_TRANS_BLOCKS+EXT3_DATA_TRANS_BLOCKS;
- break;
- case FSFILT_OP_SETATTR:
- /* Setattr on inode */
- nblocks += 1;
- break;
- default: CERROR("unknown transaction start op %d\n", op);
- LBUG();
- }
-
- LASSERT(current->journal_info == desc_private);
- lock_kernel();
- handle = journal_start(EXT3_JOURNAL(inode), nblocks);
- unlock_kernel();
-
- if (!IS_ERR(handle))
- LASSERT(current->journal_info == handle);
- return handle;
-}
-
-/*
- * Calculate the number of buffer credits needed to write multiple pages in
- * a single ext3 transaction. No, this shouldn't be here, but as yet ext3
- * doesn't have a nice API for calculating this sort of thing in advance.
- *
- * See comment above ext3_writepage_trans_blocks for details. We assume
- * no data journaling is being done, but it does allow for all of the pages
- * being non-contiguous. If we are guaranteed contiguous pages we could
- * reduce the number of (d)indirect blocks a lot.
- *
- * With N blocks per page and P pages, for each inode we have at most:
- * N*P indirect
- * min(N*P, blocksize/4 + 1) dindirect blocks
- * niocount tindirect
- *
- * For the entire filesystem, we have at most:
- * min(sum(nindir + P), ngroups) bitmap blocks (from the above)
- * min(sum(nindir + P), gdblocks) group descriptor blocks (from the above)
- * objcount inode blocks
- * 1 superblock
- * 2 * EXT3_SINGLEDATA_TRANS_BLOCKS for the quota files
- *
- * 1 EXT3_DATA_TRANS_BLOCKS for the last_rcvd update.
- */
-static int fsfilt_ext3_credits_needed(int objcount, struct fsfilt_objinfo *fso)
-{
- struct super_block *sb = fso->fso_dentry->d_inode->i_sb;
- int blockpp = 1 << (PAGE_CACHE_SHIFT - sb->s_blocksize_bits);
- int addrpp = EXT3_ADDR_PER_BLOCK(sb) * blockpp;
- int nbitmaps = 0;
- int ngdblocks = 0;
- int needed = objcount + 1;
- int i;
-
- for (i = 0; i < objcount; i++, fso++) {
- int nblocks = fso->fso_bufcnt * blockpp;
- int ndindirect = min(nblocks, addrpp + 1);
- int nindir = nblocks + ndindirect + 1;
-
- nbitmaps += nindir + nblocks;
- ngdblocks += nindir + nblocks;
-
- needed += nindir;
- }
-
- /* Assumes ext3 and ext3 have same sb_info layout at the start. */
- if (nbitmaps > EXT3_SB(sb)->s_groups_count)
- nbitmaps = EXT3_SB(sb)->s_groups_count;
- if (ngdblocks > EXT3_SB(sb)->s_gdb_count)
- ngdblocks = EXT3_SB(sb)->s_gdb_count;
-
- needed += nbitmaps + ngdblocks;
-
- /* last_rcvd update */
- needed += EXT3_DATA_TRANS_BLOCKS;
-
-#ifdef CONFIG_QUOTA
- /* We assume that there will be 1 bit set in s_dquot.flags for each
- * quota file that is active. This is at least true for now.
- */
- needed += hweight32(sb_any_quota_enabled(sb)) *
- EXT3_SINGLEDATA_TRANS_BLOCKS;
-#endif
-
- return needed;
-}
-
-/* We have to start a huge journal transaction here to hold all of the
- * metadata for the pages being written here. This is necessitated by
- * the fact that we do lots of prepare_write operations before we do
- * any of the matching commit_write operations, so even if we split
- * up to use "smaller" transactions none of them could complete until
- * all of them were opened. By having a single journal transaction,
- * we eliminate duplicate reservations for common blocks like the
- * superblock and group descriptors or bitmaps.
- *
- * We will start the transaction here, but each prepare_write will
- * add a refcount to the transaction, and each commit_write will
- * remove a refcount. The transaction will be closed when all of
- * the pages have been written.
- */
-static void *fsfilt_ext3_brw_start(int objcount, struct fsfilt_objinfo *fso,
- int niocount, void *desc_private)
-{
- journal_t *journal;
- handle_t *handle;
- int needed;
- ENTRY;
-
- LASSERT(current->journal_info == desc_private);
- journal = EXT3_SB(fso->fso_dentry->d_inode->i_sb)->s_journal;
- needed = fsfilt_ext3_credits_needed(objcount, fso);
-
- /* The number of blocks we could _possibly_ dirty can very large.
- * We reduce our request if it is absurd (and we couldn't get that
- * many credits for a single handle anyways).
- *
- * At some point we have to limit the size of I/Os sent at one time,
- * increase the size of the journal, or we have to calculate the
- * actual journal requirements more carefully by checking all of
- * the blocks instead of being maximally pessimistic. It remains to
- * be seen if this is a real problem or not.
- */
- if (needed > journal->j_max_transaction_buffers) {
- CERROR("want too many journal credits (%d) using %d instead\n",
- needed, journal->j_max_transaction_buffers);
- needed = journal->j_max_transaction_buffers;
- }
-
- lock_kernel();
- handle = journal_start(journal, needed);
- unlock_kernel();
- if (IS_ERR(handle)) {
- CERROR("can't get handle for %d credits: rc = %ld\n", needed,
- PTR_ERR(handle));
- } else {
- LASSERT(handle->h_buffer_credits >= needed);
- LASSERT(current->journal_info == handle);
- }
-
- RETURN(handle);
-}
-
-static int fsfilt_ext3_commit(struct inode *inode, void *h, int force_sync)
-{
- int rc;
- handle_t *handle = h;
-
- LASSERT(current->journal_info == handle);
- if (force_sync)
- handle->h_sync = 1; /* recovery likes this */
-
- lock_kernel();
- rc = journal_stop(handle);
- unlock_kernel();
-
- LASSERT(current->journal_info == NULL);
- return rc;
-}
-
-static int fsfilt_ext3_setattr(struct dentry *dentry, void *handle,
- struct iattr *iattr, int do_trunc)
-{
- struct inode *inode = dentry->d_inode;
- int rc;
-
- lock_kernel();
-
- /* A _really_ horrible hack to avoid removing the data stored
- * in the block pointers; this is really the "small" stripe MD data.
- * We can avoid further hackery by virtue of the MDS file size being
- * zero all the time (which doesn't invoke block truncate at unlink
- * time), so we assert we never change the MDS file size from zero. */
- if (iattr->ia_valid & ATTR_SIZE && !do_trunc) {
- /* ATTR_SIZE would invoke truncate: clear it */
- iattr->ia_valid &= ~ATTR_SIZE;
- EXT3_I(inode)->i_disksize = inode->i_size = iattr->ia_size;
-
- /* make sure _something_ gets set - so new inode
- * goes to disk (probably won't work over XFS */
- if (!(iattr->ia_valid & (ATTR_MODE | ATTR_MTIME | ATTR_CTIME))){
- iattr->ia_valid |= ATTR_MODE;
- iattr->ia_mode = inode->i_mode;
- }
- }
-
- /* Don't allow setattr to change file type */
- iattr->ia_mode = (inode->i_mode & S_IFMT)|(iattr->ia_mode & ~S_IFMT);
-
- if (inode->i_op->setattr) {
- rc = inode->i_op->setattr(dentry, iattr);
- } else {
- rc = inode_change_ok(inode, iattr);
- if (!rc)
- rc = inode_setattr(inode, iattr);
- }
-
- unlock_kernel();
-
- return rc;
-}
-
-static int fsfilt_ext3_set_md(struct inode *inode, void *handle,
- void *lmm, int lmm_size)
-{
- int rc;
-
- /* Nasty hack city - store stripe MD data in the block pointers if
- * it will fit, because putting it in an EA currently kills the MDS
- * performance. We'll fix this with "fast EAs" in the future.
- */
- if (inode->i_blocks == 0 && lmm_size <= sizeof(EXT3_I(inode)->i_data) -
- sizeof(EXT3_I(inode)->i_data[0])) {
- /* XXX old_size is debugging only */
- int old_size = EXT3_I(inode)->i_data[0];
- if (old_size != 0) {
- LASSERT(old_size < sizeof(EXT3_I(inode)->i_data));
- CERROR("setting EA on %lu again... interesting\n",
- inode->i_ino);
- }
-
- EXT3_I(inode)->i_data[0] = cpu_to_le32(lmm_size);
- memcpy(&EXT3_I(inode)->i_data[1], lmm, lmm_size);
- mark_inode_dirty(inode);
- return 0;
- } else {
- down(&inode->i_sem);
- lock_kernel();
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
- rc = ext3_xattr_set(handle, inode, EXT3_XATTR_INDEX_LUSTRE,
- XATTR_LUSTRE_MDS_OBJID, lmm, lmm_size, 0);
-#else
- rc = ext3_xattr_set_handle(handle, inode,
- EXT3_XATTR_INDEX_LUSTRE,
- XATTR_LUSTRE_MDS_OBJID, lmm,
- lmm_size, 0);
-#endif
- unlock_kernel();
- up(&inode->i_sem);
- }
-
- if (rc)
- CERROR("error adding MD data to inode %lu: rc = %d\n",
- inode->i_ino, rc);
- return rc;
-}
-
-static int fsfilt_ext3_get_md(struct inode *inode, void *lmm, int lmm_size)
-{
- int rc;
-
- if (inode->i_blocks == 0 && EXT3_I(inode)->i_data[0]) {
- int size = le32_to_cpu(EXT3_I(inode)->i_data[0]);
- LASSERT(size < sizeof(EXT3_I(inode)->i_data));
- if (lmm) {
- if (size > lmm_size)
- return -ERANGE;
- memcpy(lmm, &EXT3_I(inode)->i_data[1], size);
- }
- return size;
- }
-
- down(&inode->i_sem);
- lock_kernel();
- rc = ext3_xattr_get(inode, EXT3_XATTR_INDEX_LUSTRE,
- XATTR_LUSTRE_MDS_OBJID, lmm, lmm_size);
- unlock_kernel();
- up(&inode->i_sem);
-
- /* This gives us the MD size */
- if (lmm == NULL)
- return (rc == -ENODATA) ? 0 : rc;
-
- if (rc < 0) {
- CDEBUG(D_INFO, "error getting EA %s from inode %lu: "
- "rc = %d\n", XATTR_LUSTRE_MDS_OBJID, inode->i_ino, rc);
- memset(lmm, 0, lmm_size);
- return (rc == -ENODATA) ? 0 : rc;
- }
-
- return rc;
-}
-
-static ssize_t fsfilt_ext3_readpage(struct file *file, char *buf, size_t count,
- loff_t *off)
-{
- struct inode *inode = file->f_dentry->d_inode;
- int rc = 0;
-
- if (S_ISREG(inode->i_mode))
- rc = file->f_op->read(file, buf, count, off);
- else {
- const int blkbits = inode->i_sb->s_blocksize_bits;
- const int blksize = inode->i_sb->s_blocksize;
-
- CDEBUG(D_EXT2, "reading "LPSZ" at dir %lu+%llu\n",
- count, inode->i_ino, *off);
- while (count > 0) {
- struct buffer_head *bh;
-
- bh = NULL;
- if (*off < inode->i_size) {
- int err = 0;
-
- bh = ext3_bread(NULL, inode, *off >> blkbits,
- 0, &err);
-
- CDEBUG(D_EXT2, "read %u@%llu\n", blksize, *off);
-
- if (bh) {
- memcpy(buf, bh->b_data, blksize);
- brelse(bh);
- } else if (err) {
- /* XXX in theory we should just fake
- * this buffer and continue like ext3,
- * especially if this is a partial read
- */
- CERROR("error read dir %lu+%llu: %d\n",
- inode->i_ino, *off, err);
- RETURN(err);
- }
- }
- if (!bh) {
- struct ext3_dir_entry_2 *fake = (void *)buf;
-
- CDEBUG(D_EXT2, "fake %u@%llu\n", blksize, *off);
- memset(fake, 0, sizeof(*fake));
- fake->rec_len = cpu_to_le32(blksize);
- }
- count -= blksize;
- buf += blksize;
- *off += blksize;
- rc += blksize;
- }
- }
-
- return rc;
-}
-
-static void fsfilt_ext3_cb_func(struct journal_callback *jcb, int error)
-{
- struct fsfilt_cb_data *fcb = (struct fsfilt_cb_data *)jcb;
-
- fcb->cb_func(fcb->cb_obd, fcb->cb_last_rcvd, fcb->cb_data, error);
-
- OBD_SLAB_FREE(fcb, fcb_cache, sizeof *fcb);
- atomic_dec(&fcb_cache_count);
-}
-
-static int fsfilt_ext3_set_last_rcvd(struct obd_device *obd, __u64 last_rcvd,
- void *handle, fsfilt_cb_t cb_func,
- void *cb_data)
-{
- struct fsfilt_cb_data *fcb;
-
- OBD_SLAB_ALLOC(fcb, fcb_cache, GFP_NOFS, sizeof *fcb);
- if (fcb == NULL)
- RETURN(-ENOMEM);
-
- atomic_inc(&fcb_cache_count);
- fcb->cb_func = cb_func;
- fcb->cb_obd = obd;
- fcb->cb_last_rcvd = last_rcvd;
- fcb->cb_data = cb_data;
-
- CDEBUG(D_EXT2, "set callback for last_rcvd: "LPD64"\n", last_rcvd);
- lock_kernel();
- journal_callback_set(handle, fsfilt_ext3_cb_func,
- (struct journal_callback *)fcb);
- unlock_kernel();
-
- return 0;
-}
-
-static int fsfilt_ext3_journal_data(struct file *filp)
-{
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
- /* bug 1576: enable data journaling on 2.5 when appropriate */
- struct inode *inode = filp->f_dentry->d_inode;
- EXT3_I(inode)->i_flags |= EXT3_JOURNAL_DATA_FL;
-#endif
- return 0;
-}
-
-/*
- * We need to hack the return value for the free inode counts because
- * the current EA code requires one filesystem block per inode with EAs,
- * so it is possible to run out of blocks before we run out of inodes.
- *
- * This can be removed when the ext3 EA code is fixed.
- */
-static int fsfilt_ext3_statfs(struct super_block *sb, struct obd_statfs *osfs)
-{
- struct kstatfs sfs;
- int rc = vfs_statfs(sb, &sfs);
-
- if (!rc && sfs.f_bfree < sfs.f_ffree) {
- sfs.f_files = (sfs.f_files - sfs.f_ffree) + sfs.f_bfree;
- sfs.f_ffree = sfs.f_bfree;
- }
-
- statfs_pack(osfs, &sfs);
- return rc;
-}
-
-static int fsfilt_ext3_sync(struct super_block *sb)
-{
- return ext3_force_commit(sb);
-}
-
-extern int ext3_prep_san_write(struct inode *inode, long *blocks,
- int nblocks, loff_t newsize);
-static int fsfilt_ext3_prep_san_write(struct inode *inode, long *blocks,
- int nblocks, loff_t newsize)
-{
- return ext3_prep_san_write(inode, blocks, nblocks, newsize);
-}
-
-static int fsfilt_ext3_read_record(struct file * file, void *buf,
- int size, loff_t *offs)
-{
- struct buffer_head *bh;
- unsigned long block, boffs;
- struct inode *inode = file->f_dentry->d_inode;
- int err;
-
- if (inode->i_size < *offs + size) {
- CERROR("file size %llu is too short for read %u@%llu\n",
- inode->i_size, size, *offs);
- return -EIO;
- }
-
- block = *offs >> inode->i_blkbits;
- bh = ext3_bread(NULL, inode, block, 0, &err);
- if (!bh) {
- CERROR("can't read block: %d\n", err);
- return err;
- }
-
- boffs = (unsigned)*offs % bh->b_size;
- if (boffs + size > bh->b_size) {
- CERROR("request crosses block's border. offset %llu, size %u\n",
- *offs, size);
- brelse(bh);
- return -EIO;
- }
-
- memcpy(buf, bh->b_data + boffs, size);
- brelse(bh);
- *offs += size;
- return 0;
-}
-
-static int fsfilt_ext3_write_record(struct file *file, void *buf, int size,
- loff_t *offs, int force_sync)
-{
- struct buffer_head *bh;
- unsigned long block, boffs;
- struct inode *inode = file->f_dentry->d_inode;
- loff_t old_size = inode->i_size;
- journal_t *journal;
- handle_t *handle;
- int err;
-
- journal = EXT3_SB(inode->i_sb)->s_journal;
- handle = journal_start(journal, EXT3_DATA_TRANS_BLOCKS + 2);
- if (IS_ERR(handle)) {
- CERROR("can't start transaction\n");
- return PTR_ERR(handle);
- }
-
- block = *offs >> inode->i_blkbits;
- if (*offs + size > inode->i_size) {
- down(&inode->i_sem);
- if (*offs + size > inode->i_size)
- inode->i_size = ((loff_t)block + 1) << inode->i_blkbits;
- up(&inode->i_sem);
- }
-
- bh = ext3_bread(handle, inode, block, 1, &err);
- if (!bh) {
- CERROR("can't read/create block: %d\n", err);
- goto out;
- }
-
- /* This is a hack only needed because ext3_get_block_handle() updates
- * i_disksize after marking the inode dirty in ext3_splice_branch().
- * We will fix that when we get a chance, as ext3_mark_inode_dirty()
- * is not without cost, nor is it even exported.
- */
- if (inode->i_size > old_size)
- mark_inode_dirty(inode);
-
- boffs = (unsigned)*offs % bh->b_size;
- if (boffs + size > bh->b_size) {
- CERROR("request crosses block's border. offset %llu, size %u\n",
- *offs, size);
- err = -EIO;
- goto out;
- }
-
- err = ext3_journal_get_write_access(handle, bh);
- if (err) {
- CERROR("journal_get_write_access() returned error %d\n", err);
- goto out;
- }
- memcpy(bh->b_data + boffs, buf, size);
- err = ext3_journal_dirty_metadata(handle, bh);
- if (err) {
- CERROR("journal_dirty_metadata() returned error %d\n", err);
- goto out;
- }
-
- if (force_sync)
- handle->h_sync = 1; /* recovery likes this */
-out:
- if (bh)
- brelse(bh);
- journal_stop(handle);
- if (err == 0)
- *offs += size;
- return err;
-}
-
-static struct fsfilt_operations fsfilt_ext3_ops = {
- fs_type: "ext3",
- fs_owner: THIS_MODULE,
- fs_start: fsfilt_ext3_start,
- fs_brw_start: fsfilt_ext3_brw_start,
- fs_commit: fsfilt_ext3_commit,
- fs_setattr: fsfilt_ext3_setattr,
- fs_set_md: fsfilt_ext3_set_md,
- fs_get_md: fsfilt_ext3_get_md,
- fs_readpage: fsfilt_ext3_readpage,
- fs_journal_data: fsfilt_ext3_journal_data,
- fs_set_last_rcvd: fsfilt_ext3_set_last_rcvd,
- fs_statfs: fsfilt_ext3_statfs,
- fs_sync: fsfilt_ext3_sync,
- fs_prep_san_write: fsfilt_ext3_prep_san_write,
- fs_write_record: fsfilt_ext3_write_record,
- fs_read_record: fsfilt_ext3_read_record,
-};
-
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
-
-#warning "fsfilt_ext3_init() and fsfilt_ext3_exit() aren't called on 2.6. MUST be fixed"
-
-static int __init fsfilt_ext3_init(void)
-{
- int rc;
-
- //rc = ext3_xattr_register();
- fcb_cache = kmem_cache_create("fsfilt_ext3_fcb",
- sizeof(struct fsfilt_cb_data), 0,
- 0, NULL, NULL);
- if (!fcb_cache) {
- CERROR("error allocating fsfilt journal callback cache\n");
- GOTO(out, rc = -ENOMEM);
- }
-
- rc = fsfilt_register_ops(&fsfilt_ext3_ops);
-
- if (rc)
- kmem_cache_destroy(fcb_cache);
-out:
- return rc;
-}
-
-static void __exit fsfilt_ext3_exit(void)
-{
- int rc;
-
- fsfilt_unregister_ops(&fsfilt_ext3_ops);
- rc = kmem_cache_destroy(fcb_cache);
-
- if (rc || atomic_read(&fcb_cache_count)) {
- CERROR("can't free fsfilt callback cache: count %d, rc = %d\n",
- atomic_read(&fcb_cache_count), rc);
- }
-
- //rc = ext3_xattr_unregister();
-}
-
-MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
-MODULE_DESCRIPTION("Lustre ext3 Filesystem Helper v0.1");
-MODULE_LICENSE("GPL");
-
-module_init(fsfilt_ext3_init);
-module_exit(fsfilt_ext3_exit);
-
-#endif
-
+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * lustre/lib/fsfilt_extN.c
- * Lustre filesystem abstraction routines
- *
- * Copyright (C) 2002, 2003 Cluster File Systems, Inc.
- * Author: Andreas Dilger <adilger@clusterfs.com>
- *
- * This file is part of Lustre, http://www.lustre.org.
- *
- * 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 DEBUG_SUBSYSTEM S_FILTER
-
-#include <linux/fs.h>
-#include <linux/jbd.h>
-#include <linux/slab.h>
-#include <linux/pagemap.h>
-#include <linux/quotaops.h>
-#include <linux/extN_fs.h>
-#include <linux/extN_jbd.h>
-#include <linux/extN_xattr.h>
-#include <linux/kp30.h>
-#include <linux/lustre_fsfilt.h>
-#include <linux/obd.h>
-#include <linux/obd_class.h>
-#include <linux/module.h>
-
-static kmem_cache_t *fcb_cache;
-static atomic_t fcb_cache_count = ATOMIC_INIT(0);
-
-struct fsfilt_cb_data {
- struct journal_callback cb_jcb; /* jbd private data - MUST BE FIRST */
- fsfilt_cb_t cb_func; /* MDS/OBD completion function */
- struct obd_device *cb_obd; /* MDS/OBD completion device */
- __u64 cb_last_rcvd; /* MDS/OST last committed operation */
- void *cb_data; /* MDS/OST completion function data */
-};
-
-#define EXTN_XATTR_INDEX_LUSTRE 5
-#define XATTR_LUSTRE_MDS_OBJID "system.lustre_mds_objid"
-
-/*
- * We don't currently need any additional blocks for rmdir and
- * unlink transactions because we are storing the OST oa_id inside
- * the inode (which we will be changing anyways as part of this
- * transaction).
- */
-static void *fsfilt_extN_start(struct inode *inode, int op, void *desc_private)
-{
- /* For updates to the last recieved file */
- int nblocks = EXTN_DATA_TRANS_BLOCKS;
- void *handle;
-
- LASSERT(current->journal_info == NULL);
-
- switch(op) {
- case FSFILT_OP_CREATE_LOG:
- nblocks += EXTN_INDEX_EXTRA_TRANS_BLOCKS+EXTN_DATA_TRANS_BLOCKS;
- op = FSFILT_OP_CREATE;
- break;
- case FSFILT_OP_UNLINK_LOG:
- nblocks += EXTN_INDEX_EXTRA_TRANS_BLOCKS+EXTN_DATA_TRANS_BLOCKS;
- op = FSFILT_OP_UNLINK;
- break;
- }
-
- switch(op) {
- case FSFILT_OP_RMDIR:
- case FSFILT_OP_UNLINK:
- nblocks += EXTN_DELETE_TRANS_BLOCKS;
- break;
- case FSFILT_OP_RENAME:
- /* modify additional directory */
- nblocks += EXTN_DATA_TRANS_BLOCKS;
- /* no break */
- case FSFILT_OP_SYMLINK:
- /* additional block + block bitmap + GDT for long symlink */
- nblocks += 3;
- /* no break */
- case FSFILT_OP_CREATE:
- case FSFILT_OP_MKDIR:
- case FSFILT_OP_MKNOD:
- /* modify one inode + block bitmap + GDT */
- nblocks += 3;
- /* no break */
- case FSFILT_OP_LINK:
- /* modify parent directory */
- nblocks += EXTN_INDEX_EXTRA_TRANS_BLOCKS+EXTN_DATA_TRANS_BLOCKS;
- break;
- case FSFILT_OP_SETATTR:
- /* Setattr on inode */
- nblocks += 1;
- break;
- default: CERROR("unknown transaction start op %d\n", op);
- LBUG();
- }
-
- LASSERT(current->journal_info == desc_private);
- lock_kernel();
- handle = journal_start(EXTN_JOURNAL(inode), nblocks);
- unlock_kernel();
-
- if (!IS_ERR(handle))
- LASSERT(current->journal_info == handle);
- return handle;
-}
-
-/*
- * Calculate the number of buffer credits needed to write multiple pages in
- * a single extN transaction. No, this shouldn't be here, but as yet extN
- * doesn't have a nice API for calculating this sort of thing in advance.
- *
- * See comment above extN_writepage_trans_blocks for details. We assume
- * no data journaling is being done, but it does allow for all of the pages
- * being non-contiguous. If we are guaranteed contiguous pages we could
- * reduce the number of (d)indirect blocks a lot.
- *
- * With N blocks per page and P pages, for each inode we have at most:
- * N*P indirect
- * min(N*P, blocksize/4 + 1) dindirect blocks
- * niocount tindirect
- *
- * For the entire filesystem, we have at most:
- * min(sum(nindir + P), ngroups) bitmap blocks (from the above)
- * min(sum(nindir + P), gdblocks) group descriptor blocks (from the above)
- * objcount inode blocks
- * 1 superblock
- * 2 * EXTN_SINGLEDATA_TRANS_BLOCKS for the quota files
- *
- * 1 EXTN_DATA_TRANS_BLOCKS for the last_rcvd update.
- */
-static int fsfilt_extN_credits_needed(int objcount, struct fsfilt_objinfo *fso)
-{
- struct super_block *sb = fso->fso_dentry->d_inode->i_sb;
- int blockpp = 1 << (PAGE_CACHE_SHIFT - sb->s_blocksize_bits);
- int addrpp = EXTN_ADDR_PER_BLOCK(sb) * blockpp;
- int nbitmaps = 0;
- int ngdblocks = 0;
- int needed = objcount + 1;
- int i;
-
- for (i = 0; i < objcount; i++, fso++) {
- int nblocks = fso->fso_bufcnt * blockpp;
- int ndindirect = min(nblocks, addrpp + 1);
- int nindir = nblocks + ndindirect + 1;
-
- nbitmaps += nindir + nblocks;
- ngdblocks += nindir + nblocks;
-
- needed += nindir;
- }
-
- /* Assumes extN and extN have same sb_info layout at the start. */
- if (nbitmaps > EXTN_SB(sb)->s_groups_count)
- nbitmaps = EXTN_SB(sb)->s_groups_count;
- if (ngdblocks > EXTN_SB(sb)->s_gdb_count)
- ngdblocks = EXTN_SB(sb)->s_gdb_count;
-
- needed += nbitmaps + ngdblocks;
-
- /* last_rcvd update */
- needed += EXTN_DATA_TRANS_BLOCKS;
-
-#ifdef CONFIG_QUOTA
- /* We assume that there will be 1 bit set in s_dquot.flags for each
- * quota file that is active. This is at least true for now.
- */
- needed += hweight32(sb_any_quota_enabled(sb)) *
- EXTN_SINGLEDATA_TRANS_BLOCKS;
-#endif
-
- return needed;
-}
-
-/* We have to start a huge journal transaction here to hold all of the
- * metadata for the pages being written here. This is necessitated by
- * the fact that we do lots of prepare_write operations before we do
- * any of the matching commit_write operations, so even if we split
- * up to use "smaller" transactions none of them could complete until
- * all of them were opened. By having a single journal transaction,
- * we eliminate duplicate reservations for common blocks like the
- * superblock and group descriptors or bitmaps.
- *
- * We will start the transaction here, but each prepare_write will
- * add a refcount to the transaction, and each commit_write will
- * remove a refcount. The transaction will be closed when all of
- * the pages have been written.
- */
-static void *fsfilt_extN_brw_start(int objcount, struct fsfilt_objinfo *fso,
- int niocount, void *desc_private)
-{
- journal_t *journal;
- handle_t *handle;
- int needed;
- ENTRY;
-
- LASSERT(current->journal_info == desc_private);
- journal = EXTN_SB(fso->fso_dentry->d_inode->i_sb)->s_journal;
- needed = fsfilt_extN_credits_needed(objcount, fso);
-
- /* The number of blocks we could _possibly_ dirty can very large.
- * We reduce our request if it is absurd (and we couldn't get that
- * many credits for a single handle anyways).
- *
- * At some point we have to limit the size of I/Os sent at one time,
- * increase the size of the journal, or we have to calculate the
- * actual journal requirements more carefully by checking all of
- * the blocks instead of being maximally pessimistic. It remains to
- * be seen if this is a real problem or not.
- */
- if (needed > journal->j_max_transaction_buffers) {
- CERROR("want too many journal credits (%d) using %d instead\n",
- needed, journal->j_max_transaction_buffers);
- needed = journal->j_max_transaction_buffers;
- }
-
- lock_kernel();
- handle = journal_start(journal, needed);
- unlock_kernel();
- if (IS_ERR(handle)) {
- CERROR("can't get handle for %d credits: rc = %ld\n", needed,
- PTR_ERR(handle));
- } else {
- LASSERT(handle->h_buffer_credits >= needed);
- LASSERT(current->journal_info == handle);
- }
-
- RETURN(handle);
-}
-
-static int fsfilt_extN_commit(struct inode *inode, void *h, int force_sync)
-{
- int rc;
- handle_t *handle = h;
-
- LASSERT(current->journal_info == handle);
- if (force_sync)
- handle->h_sync = 1; /* recovery likes this */
-
- lock_kernel();
- rc = journal_stop(handle);
- unlock_kernel();
-
- LASSERT(current->journal_info == NULL);
- return rc;
-}
-
-static int fsfilt_extN_setattr(struct dentry *dentry, void *handle,
- struct iattr *iattr, int do_trunc)
-{
- struct inode *inode = dentry->d_inode;
- int rc;
-
- lock_kernel();
-
- /* A _really_ horrible hack to avoid removing the data stored
- * in the block pointers; this is really the "small" stripe MD data.
- * We can avoid further hackery by virtue of the MDS file size being
- * zero all the time (which doesn't invoke block truncate at unlink
- * time), so we assert we never change the MDS file size from zero. */
- if (iattr->ia_valid & ATTR_SIZE && !do_trunc) {
- /* ATTR_SIZE would invoke truncate: clear it */
- iattr->ia_valid &= ~ATTR_SIZE;
- EXTN_I(inode)->i_disksize = inode->i_size = iattr->ia_size;
-
- /* make sure _something_ gets set - so new inode
- * goes to disk (probably won't work over XFS */
- if (!(iattr->ia_valid & (ATTR_MODE | ATTR_MTIME | ATTR_CTIME))){
- iattr->ia_valid |= ATTR_MODE;
- iattr->ia_mode = inode->i_mode;
- }
- }
-
- /* Don't allow setattr to change file type */
- iattr->ia_mode = (inode->i_mode & S_IFMT)|(iattr->ia_mode & ~S_IFMT);
-
- if (inode->i_op->setattr) {
- rc = inode->i_op->setattr(dentry, iattr);
- } else {
- rc = inode_change_ok(inode, iattr);
- if (!rc)
- rc = inode_setattr(inode, iattr);
- }
-
- unlock_kernel();
-
- return rc;
-}
-
-static int fsfilt_extN_set_md(struct inode *inode, void *handle,
- void *lmm, int lmm_size)
-{
- int rc;
-
- /* Nasty hack city - store stripe MD data in the block pointers if
- * it will fit, because putting it in an EA currently kills the MDS
- * performance. We'll fix this with "fast EAs" in the future.
- */
- if (inode->i_blocks == 0 && lmm_size <= sizeof(EXTN_I(inode)->i_data) -
- sizeof(EXTN_I(inode)->i_data[0])) {
- /* XXX old_size is debugging only */
- int old_size = EXTN_I(inode)->i_data[0];
- if (old_size != 0) {
- LASSERT(old_size < sizeof(EXTN_I(inode)->i_data));
- CERROR("setting EA on %lu again... interesting\n",
- inode->i_ino);
- }
-
- EXTN_I(inode)->i_data[0] = cpu_to_le32(lmm_size);
- memcpy(&EXTN_I(inode)->i_data[1], lmm, lmm_size);
- mark_inode_dirty(inode);
- return 0;
- } else {
- down(&inode->i_sem);
- lock_kernel();
- rc = extN_xattr_set(handle, inode, EXTN_XATTR_INDEX_LUSTRE,
- XATTR_LUSTRE_MDS_OBJID, lmm, lmm_size, 0);
- unlock_kernel();
- up(&inode->i_sem);
- }
-
- if (rc)
- CERROR("error adding MD data to inode %lu: rc = %d\n",
- inode->i_ino, rc);
- return rc;
-}
-
-static int fsfilt_extN_get_md(struct inode *inode, void *lmm, int lmm_size)
-{
- int rc;
-
- if (inode->i_blocks == 0 && EXTN_I(inode)->i_data[0]) {
- int size = le32_to_cpu(EXTN_I(inode)->i_data[0]);
- LASSERT(size < sizeof(EXTN_I(inode)->i_data));
- if (lmm) {
- if (size > lmm_size)
- return -ERANGE;
- memcpy(lmm, &EXTN_I(inode)->i_data[1], size);
- }
- return size;
- }
-
- down(&inode->i_sem);
- lock_kernel();
- rc = extN_xattr_get(inode, EXTN_XATTR_INDEX_LUSTRE,
- XATTR_LUSTRE_MDS_OBJID, lmm, lmm_size);
- unlock_kernel();
- up(&inode->i_sem);
-
- /* This gives us the MD size */
- if (lmm == NULL)
- return (rc == -ENODATA) ? 0 : rc;
-
- if (rc < 0) {
- CDEBUG(D_INFO, "error getting EA %s from inode %lu: "
- "rc = %d\n", XATTR_LUSTRE_MDS_OBJID, inode->i_ino, rc);
- memset(lmm, 0, lmm_size);
- return (rc == -ENODATA) ? 0 : rc;
- }
-
- return rc;
-}
-
-static ssize_t fsfilt_extN_readpage(struct file *file, char *buf, size_t count,
- loff_t *off)
-{
- struct inode *inode = file->f_dentry->d_inode;
- int rc = 0;
-
- if (S_ISREG(inode->i_mode))
- rc = file->f_op->read(file, buf, count, off);
- else {
- const int blkbits = inode->i_sb->s_blocksize_bits;
- const int blksize = inode->i_sb->s_blocksize;
-
- CDEBUG(D_EXT2, "reading "LPSZ" at dir %lu+%llu\n",
- count, inode->i_ino, *off);
- while (count > 0) {
- struct buffer_head *bh;
-
- bh = NULL;
- if (*off < inode->i_size) {
- int err = 0;
-
- bh = extN_bread(NULL, inode, *off >> blkbits,
- 0, &err);
-
- CDEBUG(D_EXT2, "read %u@%llu\n", blksize, *off);
-
- if (bh) {
- memcpy(buf, bh->b_data, blksize);
- brelse(bh);
- } else if (err) {
- /* XXX in theory we should just fake
- * this buffer and continue like extN,
- * especially if this is a partial read
- */
- CERROR("error read dir %lu+%llu: %d\n",
- inode->i_ino, *off, err);
- RETURN(err);
- }
- }
- if (!bh) {
- struct extN_dir_entry_2 *fake = (void *)buf;
-
- CDEBUG(D_EXT2, "fake %u@%llu\n", blksize, *off);
- memset(fake, 0, sizeof(*fake));
- fake->rec_len = cpu_to_le32(blksize);
- }
- count -= blksize;
- buf += blksize;
- *off += blksize;
- rc += blksize;
- }
- }
-
- return rc;
-}
-
-static void fsfilt_extN_cb_func(struct journal_callback *jcb, int error)
-{
- struct fsfilt_cb_data *fcb = (struct fsfilt_cb_data *)jcb;
-
- fcb->cb_func(fcb->cb_obd, fcb->cb_last_rcvd, fcb->cb_data, error);
-
- OBD_SLAB_FREE(fcb, fcb_cache, sizeof *fcb);
- atomic_dec(&fcb_cache_count);
-}
-
-static int fsfilt_extN_set_last_rcvd(struct obd_device *obd, __u64 last_rcvd,
- void *handle, fsfilt_cb_t cb_func,
- void *cb_data)
-{
- struct fsfilt_cb_data *fcb;
-
- OBD_SLAB_ALLOC(fcb, fcb_cache, GFP_NOFS, sizeof *fcb);
- if (fcb == NULL)
- RETURN(-ENOMEM);
-
- atomic_inc(&fcb_cache_count);
- fcb->cb_func = cb_func;
- fcb->cb_obd = obd;
- fcb->cb_last_rcvd = last_rcvd;
- fcb->cb_data = cb_data;
-
- CDEBUG(D_EXT2, "set callback for last_rcvd: "LPD64"\n", last_rcvd);
- lock_kernel();
- journal_callback_set(handle, fsfilt_extN_cb_func,
- (struct journal_callback *)fcb);
- unlock_kernel();
-
- return 0;
-}
-
-static int fsfilt_extN_journal_data(struct file *filp)
-{
- struct inode *inode = filp->f_dentry->d_inode;
-
- EXTN_I(inode)->i_flags |= EXTN_JOURNAL_DATA_FL;
-
- return 0;
-}
-
-/*
- * We need to hack the return value for the free inode counts because
- * the current EA code requires one filesystem block per inode with EAs,
- * so it is possible to run out of blocks before we run out of inodes.
- *
- * This can be removed when the extN EA code is fixed.
- */
-static int fsfilt_extN_statfs(struct super_block *sb, struct obd_statfs *osfs)
-{
- struct kstatfs sfs;
- int rc = vfs_statfs(sb, &sfs);
-
- if (!rc && sfs.f_bfree < sfs.f_ffree) {
- sfs.f_files = (sfs.f_files - sfs.f_ffree) + sfs.f_bfree;
- sfs.f_ffree = sfs.f_bfree;
- }
-
- statfs_pack(osfs, &sfs);
- return rc;
-}
-
-static int fsfilt_extN_sync(struct super_block *sb)
-{
- return extN_force_commit(sb);
-}
-
-extern int extN_prep_san_write(struct inode *inode, long *blocks,
- int nblocks, loff_t newsize);
-static int fsfilt_extN_prep_san_write(struct inode *inode, long *blocks,
- int nblocks, loff_t newsize)
-{
- return extN_prep_san_write(inode, blocks, nblocks, newsize);
-}
-
-static int fsfilt_extN_read_record(struct file * file, void *buf,
- int size, loff_t *offs)
-{
- struct buffer_head *bh;
- unsigned long block, boffs;
- struct inode *inode = file->f_dentry->d_inode;
- int err;
-
- if (inode->i_size < *offs + size) {
- CERROR("file size %llu is too short for read %u@%llu\n",
- inode->i_size, size, *offs);
- return -EIO;
- }
-
- block = *offs >> inode->i_blkbits;
- bh = extN_bread(NULL, inode, block, 0, &err);
- if (!bh) {
- CERROR("can't read block: %d\n", err);
- return err;
- }
-
- boffs = (unsigned)*offs % bh->b_size;
- if (boffs + size > bh->b_size) {
- CERROR("request crosses block's border. offset %llu, size %u\n",
- *offs, size);
- brelse(bh);
- return -EIO;
- }
-
- memcpy(buf, bh->b_data + boffs, size);
- brelse(bh);
- *offs += size;
- return 0;
-}
-
-static int fsfilt_extN_write_record(struct file *file, void *buf, int size,
- loff_t *offs, int force_sync)
-{
- struct buffer_head *bh;
- unsigned long block, boffs;
- struct inode *inode = file->f_dentry->d_inode;
- loff_t old_size = inode->i_size;
- journal_t *journal;
- handle_t *handle;
- int err;
-
- journal = EXTN_SB(inode->i_sb)->s_journal;
- handle = journal_start(journal, EXTN_DATA_TRANS_BLOCKS + 2);
- if (IS_ERR(handle)) {
- CERROR("can't start transaction\n");
- return PTR_ERR(handle);
- }
-
- block = *offs >> inode->i_blkbits;
- if (*offs + size > inode->i_size) {
- down(&inode->i_sem);
- if (*offs + size > inode->i_size)
- inode->i_size = ((loff_t)block + 1) << inode->i_blkbits;
- up(&inode->i_sem);
- }
-
- bh = extN_bread(handle, inode, block, 1, &err);
- if (!bh) {
- CERROR("can't read/create block: %d\n", err);
- goto out;
- }
-
- /* This is a hack only needed because extN_get_block_handle() updates
- * i_disksize after marking the inode dirty in extN_splice_branch().
- * We will fix that when we get a chance, as extN_mark_inode_dirty()
- * is not without cost, nor is it even exported.
- */
- if (inode->i_size > old_size)
- mark_inode_dirty(inode);
-
- boffs = (unsigned)*offs % bh->b_size;
- if (boffs + size > bh->b_size) {
- CERROR("request crosses block's border. offset %llu, size %u\n",
- *offs, size);
- err = -EIO;
- goto out;
- }
-
- err = extN_journal_get_write_access(handle, bh);
- if (err) {
- CERROR("journal_get_write_access() returned error %d\n", err);
- goto out;
- }
- memcpy(bh->b_data + boffs, buf, size);
- err = extN_journal_dirty_metadata(handle, bh);
- if (err) {
- CERROR("journal_dirty_metadata() returned error %d\n", err);
- goto out;
- }
-
- if (force_sync)
- handle->h_sync = 1; /* recovery likes this */
-out:
- if (bh)
- brelse(bh);
- journal_stop(handle);
- if (err == 0)
- *offs += size;
- return err;
-}
-
-static struct fsfilt_operations fsfilt_extN_ops = {
- fs_type: "extN",
- fs_owner: THIS_MODULE,
- fs_start: fsfilt_extN_start,
- fs_brw_start: fsfilt_extN_brw_start,
- fs_commit: fsfilt_extN_commit,
- fs_setattr: fsfilt_extN_setattr,
- fs_set_md: fsfilt_extN_set_md,
- fs_get_md: fsfilt_extN_get_md,
- fs_readpage: fsfilt_extN_readpage,
- fs_journal_data: fsfilt_extN_journal_data,
- fs_set_last_rcvd: fsfilt_extN_set_last_rcvd,
- fs_statfs: fsfilt_extN_statfs,
- fs_sync: fsfilt_extN_sync,
- fs_prep_san_write: fsfilt_extN_prep_san_write,
- fs_write_record: fsfilt_extN_write_record,
- fs_read_record: fsfilt_extN_read_record,
-};
-
-static int __init fsfilt_extN_init(void)
-{
- int rc;
-
- //rc = extN_xattr_register();
- fcb_cache = kmem_cache_create("fsfilt_extN_fcb",
- sizeof(struct fsfilt_cb_data), 0,
- 0, NULL, NULL);
- if (!fcb_cache) {
- CERROR("error allocating fsfilt journal callback cache\n");
- GOTO(out, rc = -ENOMEM);
- }
-
- rc = fsfilt_register_ops(&fsfilt_extN_ops);
-
- if (rc)
- kmem_cache_destroy(fcb_cache);
-out:
- return rc;
-}
-
-static void __exit fsfilt_extN_exit(void)
-{
- int rc;
-
- fsfilt_unregister_ops(&fsfilt_extN_ops);
- rc = kmem_cache_destroy(fcb_cache);
-
- if (rc || atomic_read(&fcb_cache_count)) {
- CERROR("can't free fsfilt callback cache: count %d, rc = %d\n",
- atomic_read(&fcb_cache_count), rc);
- }
-
- //rc = extN_xattr_unregister();
-}
-
-MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
-MODULE_DESCRIPTION("Lustre extN Filesystem Helper v0.1");
-MODULE_LICENSE("GPL");
-
-module_init(fsfilt_extN_init);
-module_exit(fsfilt_extN_exit);
+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * lustre/lib/fsfilt_reiserfs.c
- * Lustre filesystem abstraction routines
- *
- * Copyright (C) 2002 Cluster File Systems, Inc.
- * Author: Andreas Dilger <adilger@clusterfs.com>
- *
- * This file is part of Lustre, http://www.lustre.org.
- *
- * 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.
- */
-
-/*
- * NOTE - According to Hans Reiser, this could actually be implemented more
- * efficiently than creating a directory and putting ASCII objids in it.
- * Instead, we should return the reiserfs object ID as the lustre objid
- * (although I'm not sure what impact that would have on backup/restore).
- */
-
-#define DEBUG_SUBSYSTEM S_FILTER
-
-#include <linux/fs.h>
-#include <linux/jbd.h>
-#include <linux/slab.h>
-#include <linux/pagemap.h>
-#include <linux/quotaops.h>
-#include <linux/version.h>
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
-#include <linux/init.h>
-#include <asm/statfs.h>
-#endif
-#include <linux/kp30.h>
-#include <linux/lustre_fsfilt.h>
-#include <linux/obd.h>
-#include <linux/obd_class.h>
-#include <linux/module.h>
-
-static void *fsfilt_reiserfs_start(struct inode *inode, int op,
- void *desc_private)
-{
- return (void *)0xf00f00be;
-}
-
-static void *fsfilt_reiserfs_brw_start(int objcount, struct fsfilt_objinfo *fso,
- int niocount, void *desc_private)
-{
- return (void *)0xf00f00be;
-}
-
-static int fsfilt_reiserfs_commit(struct inode *inode, void *handle,
- int force_sync)
-{
- if (handle != (void *)0xf00f00be) {
- CERROR("bad handle %p", handle);
- return -EINVAL;
- }
-
- return 0;
-}
-
-static int fsfilt_reiserfs_setattr(struct dentry *dentry, void *handle,
- struct iattr *iattr, int do_trunc)
-{
- struct inode *inode = dentry->d_inode;
- int rc;
-
- lock_kernel();
-
- /* A _really_ horrible hack to avoid removing the data stored
- * in the block pointers; this is really the "small" stripe MD data.
- * We can avoid further hackery by virtue of the MDS file size being
- * zero all the time (which doesn't invoke block truncate at unlink
- * time), so we assert we never change the MDS file size from zero.
- */
- if (iattr->ia_valid & ATTR_SIZE && !do_trunc) {
- /* ATTR_SIZE would invoke truncate: clear it */
- iattr->ia_valid &= ~ATTR_SIZE;
- inode->i_size = iattr->ia_size;
-
- /* make sure _something_ gets set - so new inode
- * goes to disk (probably won't work over XFS
- */
- if (!iattr->ia_valid & ATTR_MODE) {
- iattr->ia_valid |= ATTR_MODE;
- iattr->ia_mode = inode->i_mode;
- }
- }
- if (inode->i_op->setattr)
- rc = inode->i_op->setattr(dentry, iattr);
- else
- rc = inode_setattr(inode, iattr);
-
- unlock_kernel();
-
- return rc;
-}
-
-static int fsfilt_reiserfs_set_md(struct inode *inode, void *handle,
- void *lmm, int lmm_size)
-{
- /* XXX write stripe data into MDS file itself */
- CERROR("not implemented yet\n");
-
- return -ENOSYS;
-}
-
-static int fsfilt_reiserfs_get_md(struct inode *inode, void *lmm, int lmm_size)
-{
- if (lmm == NULL)
- return inode->i_size;
-
- CERROR("not implemented yet\n");
- return -ENOSYS;
-}
-
-static ssize_t fsfilt_reiserfs_readpage(struct file *file, char *buf, size_t count,
- loff_t *offset)
-{
- return file->f_op->read(file, buf, count, offset);
-}
-
-static int fsfilt_reiserfs_set_last_rcvd(struct obd_device *obd,
- __u64 last_rcvd, void *handle,
- fsfilt_cb_t cb_func, void *cb_data)
-{
- static long next = 0;
-
- if (time_after(jiffies, next)) {
- CERROR("no journal callback kernel patch, faking it...\n");
- next = jiffies + 300 * HZ;
- }
-
- cb_func(obd, last_rcvd, cb_data, 0);
-
- return 0;
-}
-
-static int fsfilt_reiserfs_journal_data(struct file *filp)
-{
- CERROR("not implemented yet\n");
- return 0;
-}
-
-static int fsfilt_reiserfs_statfs(struct super_block *sb, struct obd_statfs *osfs)
-{
- struct statfs sfs;
- int rc = vfs_statfs(sb, &sfs);
-
- statfs_pack(osfs, &sfs);
- return rc;
-}
-
-static int fsfilt_reiserfs_sync(struct super_block *sb)
-{
- CERROR("not implemented yet\n");
- return -ENOSYS;
-}
-
-static struct fsfilt_operations fsfilt_reiserfs_ops = {
- fs_type: "reiserfs",
- fs_owner: THIS_MODULE,
- fs_start: fsfilt_reiserfs_start,
- fs_brw_start: fsfilt_reiserfs_brw_start,
- fs_commit: fsfilt_reiserfs_commit,
- fs_setattr: fsfilt_reiserfs_setattr,
- fs_set_md: fsfilt_reiserfs_set_md,
- fs_get_md: fsfilt_reiserfs_get_md,
- fs_readpage: fsfilt_reiserfs_readpage,
- fs_journal_data: fsfilt_reiserfs_journal_data,
- fs_set_last_rcvd: fsfilt_reiserfs_set_last_rcvd,
- fs_statfs: fsfilt_reiserfs_statfs,
- fs_sync: fsfilt_reiserfs_sync,
-};
-
-static int __init fsfilt_reiserfs_init(void)
-{
- return fsfilt_register_ops(&fsfilt_reiserfs_ops);
-}
-
-static void __exit fsfilt_reiserfs_exit(void)
-{
- fsfilt_unregister_ops(&fsfilt_reiserfs_ops);
-}
-
-MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
-MODULE_DESCRIPTION("Lustre reiserfs Filesystem Helper v0.1");
-MODULE_LICENSE("GPL");
-
-module_init(fsfilt_reiserfs_init);
-module_exit(fsfilt_reiserfs_exit);
+++ /dev/null
-int fsfilt_ext3_init(void);
-void fsfilt_ext3_exit(void);
-
-int fsfilt_extN_init(void);
-void fsfilt_extN_exit(void);
-
-int fsfilt_reiser_init(void);
-void fsfilt_reiser_exit(void);
+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * lustre/lib/fsfilt_ext3.c
- * Lustre filesystem abstraction routines
- *
- * Copyright (C) 2002, 2003 Cluster File Systems, Inc.
- * Author: Andreas Dilger <adilger@clusterfs.com>
- *
- * This file is part of Lustre, http://www.lustre.org.
- *
- * 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.
- */
-
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
-
-#define DEBUG_SUBSYSTEM S_FILTER
-
-#include <linux/version.h>
-#include <linux/fs.h>
-#include <asm/unistd.h>
-#include <linux/jbd.h>
-#include <linux/slab.h>
-#include <linux/pagemap.h>
-#include <linux/quotaops.h>
-#include <linux/ext3_fs.h>
-#include <linux/ext3_jbd.h>
-#include <linux/version.h>
-/* XXX ugh */
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
- #include <linux/ext3_xattr.h>
-#else
- #include <linux/../../fs/ext3/xattr.h>
-#endif
-#include <linux/kp30.h>
-#include <linux/lustre_fsfilt.h>
-#include <linux/obd.h>
-#include <linux/obd_class.h>
-#include <linux/module.h>
-#include <linux/lustre_compat25.h>
-#include <linux/lvfs.h>
-#include "lvfs_internal.h"
-
-#include <linux/obd.h>
-#include <linux/lustre_lib.h>
-
-/* Debugging check only needed during development */
-#ifdef OBD_CTXT_DEBUG
-# define ASSERT_CTXT_MAGIC(magic) LASSERT((magic) == OBD_RUN_CTXT_MAGIC)
-# define ASSERT_NOT_KERNEL_CTXT(msg) LASSERT(!segment_eq(get_fs(), get_ds()))
-# define ASSERT_KERNEL_CTXT(msg) LASSERT(segment_eq(get_fs(), get_ds()))
-#else
-# define ASSERT_CTXT_MAGIC(magic) do {} while(0)
-# define ASSERT_NOT_KERNEL_CTXT(msg) do {} while(0)
-# define ASSERT_KERNEL_CTXT(msg) do {} while(0)
-#endif
-
-/* push / pop to root of obd store */
-void push_ctxt(struct obd_run_ctxt *save, struct obd_run_ctxt *new_ctx,
- struct obd_ucred *uc)
-{
- //ASSERT_NOT_KERNEL_CTXT("already in kernel context!\n");
- ASSERT_CTXT_MAGIC(new_ctx->magic);
- OBD_SET_CTXT_MAGIC(save);
-
- /*
- CDEBUG(D_INFO,
- "= push %p->%p = cur fs %p pwd %p:d%d:i%d (%*s), pwdmnt %p:%d\n",
- save, current, current->fs, current->fs->pwd,
- atomic_read(¤t->fs->pwd->d_count),
- atomic_read(¤t->fs->pwd->d_inode->i_count),
- current->fs->pwd->d_name.len, current->fs->pwd->d_name.name,
- current->fs->pwdmnt,
- atomic_read(¤t->fs->pwdmnt->mnt_count));
- */
-
- save->fs = get_fs();
- LASSERT(atomic_read(¤t->fs->pwd->d_count));
- LASSERT(atomic_read(&new_ctx->pwd->d_count));
- save->pwd = dget(current->fs->pwd);
- save->pwdmnt = mntget(current->fs->pwdmnt);
- save->ngroups = current->ngroups;
-
- LASSERT(save->pwd);
- LASSERT(save->pwdmnt);
- LASSERT(new_ctx->pwd);
- LASSERT(new_ctx->pwdmnt);
-
- if (uc) {
- save->ouc.ouc_fsuid = current->fsuid;
- save->ouc.ouc_fsgid = current->fsgid;
- save->ouc.ouc_cap = current->cap_effective;
- save->ouc.ouc_suppgid1 = current->groups[0];
- save->ouc.ouc_suppgid2 = current->groups[1];
-
- current->fsuid = uc->ouc_fsuid;
- current->fsgid = uc->ouc_fsgid;
- current->cap_effective = uc->ouc_cap;
- current->ngroups = 0;
-
- if (uc->ouc_suppgid1 != -1)
- current->groups[current->ngroups++] = uc->ouc_suppgid1;
- if (uc->ouc_suppgid2 != -1)
- current->groups[current->ngroups++] = uc->ouc_suppgid2;
- }
- set_fs(new_ctx->fs);
- set_fs_pwd(current->fs, new_ctx->pwdmnt, new_ctx->pwd);
-
- /*
- CDEBUG(D_INFO,
- "= push %p->%p = cur fs %p pwd %p:d%d:i%d (%*s), pwdmnt %p:%d\n",
- new_ctx, current, current->fs, current->fs->pwd,
- atomic_read(¤t->fs->pwd->d_count),
- atomic_read(¤t->fs->pwd->d_inode->i_count),
- current->fs->pwd->d_name.len, current->fs->pwd->d_name.name,
- current->fs->pwdmnt,
- atomic_read(¤t->fs->pwdmnt->mnt_count));
- */
-}
-EXPORT_SYMBOL(push_ctxt);
-
-void pop_ctxt(struct obd_run_ctxt *saved, struct obd_run_ctxt *new_ctx,
- struct obd_ucred *uc)
-{
- //printk("pc0");
- ASSERT_CTXT_MAGIC(saved->magic);
- //printk("pc1");
- ASSERT_KERNEL_CTXT("popping non-kernel context!\n");
-
- /*
- CDEBUG(D_INFO,
- " = pop %p==%p = cur %p pwd %p:d%d:i%d (%*s), pwdmnt %p:%d\n",
- new_ctx, current, current->fs, current->fs->pwd,
- atomic_read(¤t->fs->pwd->d_count),
- atomic_read(¤t->fs->pwd->d_inode->i_count),
- current->fs->pwd->d_name.len, current->fs->pwd->d_name.name,
- current->fs->pwdmnt,
- atomic_read(¤t->fs->pwdmnt->mnt_count));
- */
-
- LASSERT(current->fs->pwd == new_ctx->pwd);
- LASSERT(current->fs->pwdmnt == new_ctx->pwdmnt);
-
- set_fs(saved->fs);
- set_fs_pwd(current->fs, saved->pwdmnt, saved->pwd);
-
- dput(saved->pwd);
- mntput(saved->pwdmnt);
- if (uc) {
- current->fsuid = saved->ouc.ouc_fsuid;
- current->fsgid = saved->ouc.ouc_fsgid;
- current->cap_effective = saved->ouc.ouc_cap;
- current->ngroups = saved->ngroups;
- current->groups[0] = saved->ouc.ouc_suppgid1;
- current->groups[1] = saved->ouc.ouc_suppgid2;
- }
-
- /*
- CDEBUG(D_INFO,
- "= pop %p->%p = cur fs %p pwd %p:d%d:i%d (%*s), pwdmnt %p:%d\n",
- saved, current, current->fs, current->fs->pwd,
- atomic_read(¤t->fs->pwd->d_count),
- atomic_read(¤t->fs->pwd->d_inode->i_count),
- current->fs->pwd->d_name.len, current->fs->pwd->d_name.name,
- current->fs->pwdmnt,
- atomic_read(¤t->fs->pwdmnt->mnt_count));
- */
-}
-EXPORT_SYMBOL(pop_ctxt);
-
-/* utility to make a file */
-struct dentry *simple_mknod(struct dentry *dir, char *name, int mode)
-{
- struct dentry *dchild;
- int err = 0;
- ENTRY;
-
- ASSERT_KERNEL_CTXT("kernel doing mknod outside kernel context\n");
- CDEBUG(D_INODE, "creating file %*s\n", (int)strlen(name), name);
-
- dchild = ll_lookup_one_len(name, dir, strlen(name));
- if (IS_ERR(dchild))
- GOTO(out_up, dchild);
-
- if (dchild->d_inode) {
- if (!S_ISREG(dchild->d_inode->i_mode))
- GOTO(out_err, err = -EEXIST);
-
- GOTO(out_up, dchild);
- }
-
- err = ll_vfs_create(dir->d_inode, dchild, (mode & ~S_IFMT) | S_IFREG, NULL);
- if (err)
- GOTO(out_err, err);
-
- RETURN(dchild);
-
-out_err:
- dput(dchild);
- dchild = ERR_PTR(err);
-out_up:
- return dchild;
-}
-EXPORT_SYMBOL(simple_mknod);
-
-/* utility to make a directory */
-struct dentry *simple_mkdir(struct dentry *dir, char *name, int mode)
-{
- struct dentry *dchild;
- int err = 0;
- ENTRY;
-
- ASSERT_KERNEL_CTXT("kernel doing mkdir outside kernel context\n");
- CDEBUG(D_INODE, "creating directory %*s\n", (int)strlen(name), name);
- dchild = ll_lookup_one_len(name, dir, strlen(name));
- if (IS_ERR(dchild))
- GOTO(out_up, dchild);
-
- if (dchild->d_inode) {
- if (!S_ISDIR(dchild->d_inode->i_mode))
- GOTO(out_err, err = -ENOTDIR);
-
- GOTO(out_up, dchild);
- }
-
- err = vfs_mkdir(dir->d_inode, dchild, mode);
- if (err)
- GOTO(out_err, err);
-
- RETURN(dchild);
-
-out_err:
- dput(dchild);
- dchild = ERR_PTR(err);
-out_up:
- return dchild;
-}
-EXPORT_SYMBOL(simple_mkdir);
-
-/*
- * Read a file from within kernel context. Prior to calling this
- * function we should already have done a push_ctxt().
- */
-int lustre_fread(struct file *file, void *buf, int len, loff_t *off)
-{
- ASSERT_KERNEL_CTXT("kernel doing read outside kernel context\n");
- if (!file || !file->f_op || !file->f_op->read || !off)
- RETURN(-ENOSYS);
-
- return file->f_op->read(file, buf, len, off);
-}
-EXPORT_SYMBOL(lustre_fread);
-
-/*
- * Write a file from within kernel context. Prior to calling this
- * function we should already have done a push_ctxt().
- */
-int lustre_fwrite(struct file *file, const void *buf, int len, loff_t *off)
-{
- ENTRY;
- ASSERT_KERNEL_CTXT("kernel doing write outside kernel context\n");
- if (!file)
- RETURN(-ENOENT);
- if (!file->f_op)
- RETURN(-ENOSYS);
- if (!off)
- RETURN(-EINVAL);
-
- if (!file->f_op->write)
- RETURN(-EROFS);
-
- RETURN(file->f_op->write(file, buf, len, off));
-}
-EXPORT_SYMBOL(lustre_fwrite);
-
-/*
- * Sync a file from within kernel context. Prior to calling this
- * function we should already have done a push_ctxt().
- */
-int lustre_fsync(struct file *file)
-{
- ENTRY;
- ASSERT_KERNEL_CTXT("kernel doing sync outside kernel context\n");
- if (!file || !file->f_op || !file->f_op->fsync)
- RETURN(-ENOSYS);
-
- RETURN(file->f_op->fsync(file, file->f_dentry, 0));
-}
-EXPORT_SYMBOL(lustre_fsync);
-
-
-
-
-
-
-
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
-
-static int __init lvfs_linux_init(void)
-{
- RETURN(0);
-}
-
-static void __exit lvfs_linux_exit(void)
-{
-
- return;
-}
-
-MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
-MODULE_DESCRIPTION("Lustre VFS Filesystem Helper v0.1");
-MODULE_LICENSE("GPL");
-
-module_init(lvfs_linux_init);
-module_exit(lvfs_linux_exit);
-
-#else
-
-#warning "lvfs_linux_init() and fsfilt_ext3_exit() aren't called on 2.6. MUST be fixed"
-
-
-#endif
+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * Copyright (C) 2001-2003 Cluster File Systems, Inc.
- * Author: Andreas Dilger <adilger@clusterfs.com>
- *
- * This file is part of Lustre, http://www.lustre.org.
- *
- * 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.
- *
- * OST<->MDS recovery logging infrastructure.
- *
- * Invariants in implementation:
- * - we do not share logs among different OST<->MDS connections, so that
- * if an OST or MDS fails it need only look at log(s) relevant to itself
- */
-
-#define DEBUG_SUBSYSTEM S_LOG
-
-#ifndef EXPORT_SYMTAB
-#define EXPORT_SYMTAB
-#endif
-
-#include <linux/fs.h>
-#include <linux/obd_class.h>
-#include <linux/lustre_log.h>
-#include <portals/list.h>
-
-/* Allocate a new log or catalog handle */
-struct llog_handle *llog_alloc_handle(void)
-{
- struct llog_handle *loghandle;
- ENTRY;
-
- OBD_ALLOC(loghandle, sizeof(*loghandle));
- if (loghandle == NULL)
- RETURN(ERR_PTR(-ENOMEM));
-
- OBD_ALLOC(loghandle->lgh_hdr, LLOG_CHUNK_SIZE);
- if (loghandle->lgh_hdr == NULL) {
- OBD_FREE(loghandle, sizeof(*loghandle));
- RETURN(ERR_PTR(-ENOMEM));
- }
-
- INIT_LIST_HEAD(&loghandle->lgh_list);
- sema_init(&loghandle->lgh_lock, 1);
-
- RETURN(loghandle);
-}
-EXPORT_SYMBOL(llog_alloc_handle);
-
-void llog_free_handle(struct llog_handle *loghandle)
-{
- if (!loghandle)
- return;
-
- list_del_init(&loghandle->lgh_list);
- OBD_FREE(loghandle->lgh_hdr, LLOG_CHUNK_SIZE);
- OBD_FREE(loghandle, sizeof(*loghandle));
-}
-EXPORT_SYMBOL(llog_free_handle);
-
-int llog_buf2reclen(int len)
-{
- int size;
-
- size = sizeof(struct llog_rec_hdr) + size_round(len) + sizeof(__u32);
- return size;
-}
-
-
-
-
-/* Remove a log entry from the catalog.
- * Assumes caller has already pushed us into the kernel context and is locking.
- */
-int llog_delete_log(struct llog_handle *cathandle,struct llog_handle *loghandle)
-{
- struct llog_cookie *lgc = &loghandle->lgh_cookie;
- int catindex = lgc->lgc_index;
- struct llog_log_hdr *llh = cathandle->lgh_hdr;
- loff_t offset = 0;
- int rc = 0;
- ENTRY;
-
- CDEBUG(D_HA, "log "LPX64":%x empty, closing\n",
- lgc->lgc_lgl.lgl_oid, lgc->lgc_lgl.lgl_ogen);
-
- if (!ext2_clear_bit(catindex, llh->llh_bitmap)) {
- CERROR("catalog index %u already clear?\n", catindex);
- LBUG();
- } else {
- rc = lustre_fwrite(cathandle->lgh_file, llh, sizeof(*llh),
- &offset);
-
- if (rc != sizeof(*llh)) {
- CERROR("log %u cancel error: rc %d\n", catindex, rc);
- if (rc >= 0)
- rc = -EIO;
- } else
- rc = 0;
- }
- RETURN(rc);
-}
-EXPORT_SYMBOL(llog_delete_log);
-
-int llog_process_log(struct llog_handle *loghandle, llog_cb_t cb, void *data)
-{
- struct llog_log_hdr *llh = loghandle->lgh_hdr;
- void *buf;
- __u64 cur_offset = LLOG_CHUNK_SIZE;
- int rc = 0, index = 0;
- ENTRY;
-
- OBD_ALLOC(buf, PAGE_SIZE);
- if (!buf)
- RETURN(-ENOMEM);
-
- while (rc == 0) {
- struct llog_rec_hdr *rec;
-
- /* there is likely a more efficient way than this */
- while (index < LLOG_BITMAP_BYTES * 8 &&
- !ext2_test_bit(index, llh->llh_bitmap))
- ++index;
-
- if (index >= LLOG_BITMAP_BYTES * 8)
- break;
-
- rc = llog_next_block(loghandle, 0, index,
- &cur_offset, buf, PAGE_SIZE);
- if (rc)
- RETURN(rc);
-
- rec = buf;
-
- /* skip records in buffer until we are at the one we want */
- while (rec->lrh_index < index) {
- if (rec->lrh_index == 0)
- RETURN(0); /* no more records */
-
- cur_offset += rec->lrh_len;
- rec = ((void *)rec + rec->lrh_len);
-
- if ((void *)rec > buf + PAGE_SIZE) {
- CERROR("log index %u not in log @ "LPU64"\n",
- index, cur_offset);
- LBUG(); /* record not in this buffer? */
- }
-
- rc = cb(loghandle, rec, data);
- ++index;
- }
- }
-
- RETURN(rc);
-}
-EXPORT_SYMBOL(llog_process_log);
-
-
-int llog_write_header(struct llog_handle *loghandle, int size)
-{
- struct llog_log_hdr *llh;
-
- LASSERT(sizeof(*llh) == LLOG_CHUNK_SIZE);
-
- if (loghandle->lgh_file->f_dentry->d_inode->i_size)
- RETURN(-EBUSY);
-
- llh = loghandle->lgh_hdr;
- llh->llh_size = size;
- llh->llh_hdr.lrh_type = LLOG_OBJECT_MAGIC;
- llh->llh_hdr.lrh_len = llh->llh_tail.lrt_len = sizeof(*llh);
- llh->llh_timestamp = LTIME_S(CURRENT_TIME);
- llh->llh_bitmap_offset = offsetof(typeof(*llh), llh_bitmap);
- memcpy(&llh->llh_tgtuuid, tgtuuid, sizeof(llh->llh_tgtuuid));
- loghandle->lgh_tgtuuid = &llh->llh_tgtuuid;
-
- /* write the header record in the log */
- rc = llog_write_record(loghandle, &llh, NULL, NULL, 0);
- if (rc > 0)
- rc = 0;
- RETURN(rc);
-}
-EXPORT_SYMBOL(llog_write_header);
+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * Copyright (C) 2001-2003 Cluster File Systems, Inc.
- * Author: Andreas Dilger <adilger@clusterfs.com>
- *
- * This file is part of Lustre, http://www.lustre.org.
- *
- * 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.
- *
- * OST<->MDS recovery logging infrastructure.
- *
- * Invariants in implementation:
- * - we do not share logs among different OST<->MDS connections, so that
- * if an OST or MDS fails it need only look at log(s) relevant to itself
- */
-
-#define DEBUG_SUBSYSTEM S_LOG
-
-#ifndef EXPORT_SYMTAB
-#define EXPORT_SYMTAB
-#endif
-
-#include <linux/fs.h>
-#include <linux/obd_class.h>
-#include <linux/lustre_log.h>
-#include <portals/list.h>
-
-/* Create a new log handle and add it to the open list.
- * This log handle will be closed when all of the records in it are removed.
- *
- * Assumes caller has already pushed us into the kernel context and is locking.
- */
-struct llog_handle *llog_cat_new_log(struct llog_handle *cathandle,
- struct obd_uuid *tgtuuid)
-{
- struct llog_handle *loghandle;
- struct llog_log_hdr *llh;
- struct llog_logid_rec rec;
- loff_t offset;
- int rc, index, bitmap_size, i;
- ENTRY;
-
- /* does this need a tgt uuid */
- rc = llog_create(cathandle->lgh_obd, &loghandle, NULL);
- if (rc)
- RETURN(ERR_PTR(rc));
-
-
- llh = cathandle->lgh_hdr;
- bitmap_size = sizeof(llh->llh_bitmap) * 8;
- /* This should basically always find the first entry free */
- for (i = 0, index = llh->llh_count; i < bitmap_size; i++, index++) {
- index %= bitmap_size;
- if (ext2_set_bit(index, llh->llh_bitmap)) {
- /* XXX This should trigger log clean up or similar */
- CERROR("catalog index %d is still in use\n", index);
- } else {
- llh->llh_count = (index + 1) % bitmap_size;
- break;
- }
- }
- if (i == bitmap_size) {
- CERROR("no free catalog slots for log...\n");
- GOTO(out_destroy, rc = -ENOSPC);
- }
-
- CDEBUG(D_HA, "new recovery log "LPX64":%x catalog index %u\n",
- loghandle->lgh_cookie.lgc_lgl.lgl_oid,
- loghandle->lgh_cookie.lgc_lgl.lgl_ogen, index);
- loghandle->lgh_cookie.lgc_index = index;
-
- rec.lid_hdr.lrh_len = sizeof(rec);
- rec.lid_hdr.lrh_index = index;
- rec.lid_hdr.lrh_type = LLOG_OBJECT_MAGIC;
- rec.lid_id = loghandle->lgh_id;
- rec.lid_tail.lrt_len = sizeof(rec);
- rec.lid_tail.lrt_index = index;
-
- rc = llog_write_record(cathandle, &rec, loghandle->lgh_my_cat_cookie,
- index);
- if (rc < 0) {
- GOTO(out_destroy, rc);
- }
-
- rc = llog_write_record(loghandle, )
-
-
-
- cathandle->lgh_current = loghandle;
- list_add_tail(&loghandle->lgh_list, &cathandle->lgh_list);
-
- out_destroy:
- llog_destroy(loghandle);
-
- RETURN(loghandle);
-}
-EXPORT_SYMBOL(llog_cat_new_log);
-
-/* Assumes caller has already pushed us into the kernel context and is locking.
- * We return a lock on the handle to ensure nobody yanks it from us.
- */
-int llog_cat_id2handle(struct llog_handle *cathandle,
- struct llog_handle **res,
- struct llog_logid *logid)
-{
- struct llog_handle *loghandle;
- int rc = 0;
- ENTRY;
-
- if (cathandle == NULL)
- RETURN(-EBADF);
-
- list_for_each_entry(loghandle, &cathandle->lgh_list, lgh_list) {
- struct llog_logid *cgl = &loghandle->lgh_cookie.lgc_lgl;
- if (cgl->lgl_oid == logid->lgl_oid) {
- if (cgl->lgl_ogen != logid->lgl_ogen) {
- CERROR("log "LPX64" generation %x != %x\n",
- logid->lgl_oid, cgl->lgl_ogen,
- logid->lgl_ogen);
- continue;
- }
- GOTO(out, rc = 0);
- }
- }
-
- rc = llog_open(cathandle->lgh_obd, &loghandle, logid);
- if (rc) {
- CERROR("error opening log id "LPX64":%x: rc %d\n",
- logid->lgl_oid, logid->lgl_ogen, rc);
- } else {
- list_add(&loghandle->lgh_list, &cathandle->lgh_list);
- }
-
-out:
- *res = loghandle;
- RETURN(rc);
-}
-
-/* Assumes caller has already pushed us into the kernel context. */
-int llog_cat_init(struct llog_handle *cathandle, struct obd_uuid *tgtuuid)
-{
- struct llog_log_hdr *llh;
- loff_t offset = 0;
- int rc = 0;
- ENTRY;
-
- LASSERT(sizeof(*llh) == LLOG_CHUNK_SIZE);
-
- down(&cathandle->lgh_lock);
- llh = cathandle->lgh_hdr;
-
- if (cathandle->lgh_file->f_dentry->d_inode->i_size == 0) {
- llog_write_header(cathandle, LLOG_HDR_FL_FIXED_SZ);
-
-write_hdr: llh->llh_hdr.lrh_type = LLOG_CATALOG_MAGIC;
- llh->llh_hdr.lrh_len = llh->llh_tail.lrt_len = LLOG_CHUNK_SIZE;
- llh->llh_timestamp = LTIME_S(CURRENT_TIME);
- llh->llh_bitmap_offset = offsetof(typeof(*llh), llh_bitmap);
- memcpy(&llh->llh_tgtuuid, tgtuuid, sizeof(llh->llh_tgtuuid));
- rc = lustre_fwrite(cathandle->lgh_file, llh, LLOG_CHUNK_SIZE,
- &offset);
- if (rc != LLOG_CHUNK_SIZE) {
- CERROR("error writing catalog header: rc %d\n", rc);
- OBD_FREE(llh, sizeof(*llh));
- if (rc >= 0)
- rc = -ENOSPC;
- } else
- rc = 0;
- } else {
- rc = lustre_fread(cathandle->lgh_file, llh, LLOG_CHUNK_SIZE,
- &offset);
- if (rc != LLOG_CHUNK_SIZE) {
- CERROR("error reading catalog header: rc %d\n", rc);
- /* Can we do much else if the header is bad? */
- goto write_hdr;
- } else
- rc = 0;
- }
-
- cathandle->lgh_tgtuuid = &llh->llh_tgtuuid;
- up(&cathandle->lgh_lock);
- RETURN(rc);
-}
-EXPORT_SYMBOL(llog_cat_init);
-
-/* Return the currently active log handle. If the current log handle doesn't
- * have enough space left for the current record, start a new one.
- *
- * If reclen is 0, we only want to know what the currently active log is,
- * otherwise we get a lock on this log so nobody can steal our space.
- *
- * Assumes caller has already pushed us into the kernel context and is locking.
- */
-static struct llog_handle *llog_cat_current_log(struct llog_handle *cathandle,
- int reclen)
-{
- struct llog_handle *loghandle = NULL;
- ENTRY;
-
- loghandle = cathandle->lgh_current;
- if (loghandle) {
- struct llog_log_hdr *llh = loghandle->lgh_hdr;
- if (llh->llh_count < sizeof(llh->llh_bitmap) * 8)
- RETURN(loghandle);
- }
-
- if (reclen)
- loghandle = llog_new_log(cathandle, cathandle->lgh_tgtuuid);
- RETURN(loghandle);
-}
-
-/* Add a single record to the recovery log(s) using a catalog
- * Returns as llog_write_record
- *
- * Assumes caller has already pushed us into the kernel context.
- */
-int llog_cat_add_record(struct llog_handle *cathandle, struct llog_rec_hdr *rec,
- struct llog_cookie *reccookie, void *buf)
-{
- struct llog_handle *loghandle;
- int reclen = rec->lrh_len;
- int rc;
- ENTRY;
-
- LASSERT(rec->lrh_len <= LLOG_CHUNK_SIZE);
- down(&cathandle->lgh_lock);
- loghandle = llog_cat_current_log(cathandle, reclen);
- if (IS_ERR(loghandle)) {
- up(&cathandle->lgh_lock);
- RETURN(PTR_ERR(loghandle));
- }
- down(&loghandle->lgh_lock);
- up(&cathandle->lgh_lock);
-
- rc = llog_write_record(loghandle, rec, reccookie, buf);
-
- up(&loghandle->lgh_lock);
- RETURN(rc);
-}
-EXPORT_SYMBOL(llog_cat_add_record);
-
-/* For each cookie in the cookie array, we clear the log in-use bit and either:
- * - the log is empty, so mark it free in the catalog header and delete it
- * - the log is not empty, just write out the log header
- *
- * The cookies may be in different log files, so we need to get new logs
- * each time.
- *
- * Assumes caller has already pushed us into the kernel context.
- */
-int llog_cancel_records(struct llog_handle *cathandle, int count,
- struct llog_cookie *cookies)
-{
- int i, rc = 0;
- ENTRY;
-
- down(&cathandle->lgh_lock);
- for (i = 0; i < count; i++, cookies++) {
- struct llog_handle *loghandle;
- struct llog_log_hdr *llh;
- struct llog_logid *lgl = &cookies->lgc_lgl;
- int res;
-
- rc = llog_cat_id2handle(cathandle, &loghandle, lgl);
- if (res) {
- CERROR("Cannot find log "LPX64"\n", lgl->lgl_oid);
- break;
- }
-
- down(&loghandle->lgh_lock);
- llh = loghandle->lgh_hdr;
- CDEBUG(D_HA, "cancelling "LPX64" index %u: %u\n",
- lgl->lgl_oid, cookies->lgc_index,
- ext2_test_bit(cookies->lgc_index, llh->llh_bitmap));
- if (!ext2_clear_bit(cookies->lgc_index, llh->llh_bitmap)) {
- CERROR("log index %u in "LPX64":%x already clear?\n",
- cookies->lgc_index, lgl->lgl_oid, lgl->lgl_ogen);
- } else if (--llh->llh_count == 0 &&
- loghandle != llog_cat_current_log(cathandle, 0)) {
- rc = llog_close_log(cathandle, loghandle);
- } else {
- loff_t offset = 0;
- int ret = lustre_fwrite(loghandle->lgh_file, llh,
- sizeof(*llh), &offset);
-
- if (ret != sizeof(*llh)) {
- CERROR("error cancelling index %u: rc %d\n",
- cookies->lgc_index, ret);
- /* XXX mark handle bad? */
- if (!rc)
- rc = ret;
- }
- }
- up(&loghandle->lgh_lock);
- }
- up(&cathandle->lgh_lock);
-
- RETURN(rc);
-}
-EXPORT_SYMBOL(llog_cancel_records);
-
-void llog_cat_put(struct obd_device *obd, struct llog_handle *cathandle)
-{
- struct llog_handle *loghandle, *n;
- struct obd_run_ctxt saved;
- int rc;
- ENTRY;
-
- push_ctxt(&saved, &obd->u.mds.mds_ctxt, NULL);
- list_for_each_entry_safe(loghandle, n, &cathandle->lgh_list, lgh_list)
- llog_cat_close(cathandle, loghandle);
- pop_ctxt(&saved, &obd->u.mds.mds_ctxt, NULL);
-
- EXIT;
-}
+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * Copyright (C) 2001-2003 Cluster File Systems, Inc.
- * Author: Andreas Dilger <adilger@clusterfs.com>
- *
- * This file is part of Lustre, http://www.lustre.org.
- *
- * 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.
- *
- * OST<->MDS recovery logging infrastructure.
- *
- * Invariants in implementation:
- * - we do not share logs among different OST<->MDS connections, so that
- * if an OST or MDS fails it need only look at log(s) relevant to itself
- */
-
-#define DEBUG_SUBSYSTEM S_LOG
-
-#ifndef EXPORT_SYMTAB
-#define EXPORT_SYMTAB
-#endif
-
-#include <linux/fs.h>
-#include <linux/obd_class.h>
-#include <linux/lustre_log.h>
-#include <portals/list.h>
-
-
-static int llog_lvfs_pad(struct l_file *file, int len, int index)
-{
- struct llog_rec_hdr rec;
- struct llog_rec_tail tail;
- ENTRY;
-
- LASSERT(len >= LLOG_MIN_REC_SIZE && (len & 0xf) == 0);
-
- tail.lrt_len = rec.lrh_len = len;
- tail.lrt_index = rec.lrh_index = index;
- rec.lrh_type = 0;
-
- rc = lustre_fwrite(file, &rec, sizeof(rec), &file->f_pos);
- if (rc != sizeof(rec)) {
- CERROR("error writing padding record: rc %d\n", rc);
- GOTO(out, rc < 0 ? rc : rc = -EIO);
- }
-
- file->f_pos += len - sizeof(rec) - sizeof(tail);
- rc = lustre_fwrite(file, &tail, sizeof(tail), &file->f_pos);
- if (rc != sizeof(tail)) {
- CERROR("error writing padding record: rc %d\n", rc);
- GOTO(out, rc < 0 ? rc : rc = -EIO);
- }
- rc = 0;
- out:
- RETURN(rc);
-}
-
-static int llog_vfs_write_blob(struct l_file *file, struct llog_rec_hdr *rec,
- void *buf, loff_t off)
-{
- int rc;
- struct llog_rec_tail end;
- loff_t saved_off = file->f_pos;
-
- ENTRY;
- file->f_pos = off;
-
- if (!buf) {
- rc = lustre_fwrite(file, rec, rec->lrh_len, &file->f_pos);
- if (rc != rec->lhr_len) {
- CERROR("error writing log record: rc %d\n", rc);
- GOTO(out, rc < 0 ? rc : rc = -ENOSPC);
- }
- GOTO(out, rc = 0);
- }
-
- /* the buf case */
- buflen = rec->lrh_len;
- rec->lrh_len = sizeof(*rec) + size_round(buflen) + sizeof(*end);
- rc = lustre_fwrite(file, rec, sizeof(*rec), &file->f_pos);
- if (rc != sizeof(*rec)) {
- CERROR("error writing log transhdr: rc %d\n", rc);
- GOTO(out, rc < 0 ? rc : rc = -ENOSPC);
- }
-
- rc = lustre_fwrite(file, buf, buflen, &file->f_pos);
- if (rc != buflen) {
- CERROR("error writing log buffer: rc %d\n", rc);
- GOTO(out, rc < 0 ? rc : rc = -ENOSPC);
- }
-
- loghandle->lgh_file->f_pos += size_round(buflen) - buflen;
- end.lrt_len = rec->lrh_len;
- end.lrt_index = rec->lrh_index;
- rc = lustre_fwrite(file, &end, sizeof(end), &file->f_pos);
- if (rc != sizeof(end)) {
- CERROR("error writing log tail: rc %d\n", rc);
- GOTO(out, rc < 0 ? rc : rc = -ENOSPC);
- }
-
- rc = 0;
- out:
- if (saved_off > file->f_pos)
- file->f_pos = saved_off;
- LASSERT(rc <= 0);
- RETURN(rc);
-}
-
-/* returns negative in on error; 0 if success && reccookie == 0; 1 otherwise */
-/* appends if idx == -1, otherwise overwrites record idx. */
-int llog_lvfs_write_record(struct llog_handle *loghandle, struct llog_rec_hdr *rec,
- struct llog_cookie *reccookie, void *buf, int idx)
-{
- struct llog_log_hdr *llh;
- int reclen = rec->lrh_len;
- struct file *file;
- loff_t offset;
- size_t left;
- int index;
- int rc;
- int buflen;
- ENTRY;
-
- llh = loghandle->lgh_hdr;
- file = loghandle->lgh_file;
-
- if (idx != -1) {
- loff_t saved_offset;
-
- /* no header: only allowed to insert record 0 */
- if (idx != 0 && !file->f_dentry->d_inode->i_size) {
- CERROR("idx != -1 in empty log ", );
- LBUG();
- }
-
- if (!loghandle->lgh_hdr->llh_size != rec->lrh_len)
- RETURN(-EINVAL);
-
- rc = llog_lvfs_write_blob(file, llh, NULL, 0);
- if (rc)
- RETURN(rc);
-
- saved_offset = sizeof(*llh) + idx * rec->lrh_len;
- rc = llog_lvfs_write_blob(file, rec, buf, saved_offset);
- if (rc)
- RETURN(rc);
- }
-
- /* Make sure that records don't cross a chunk boundary, so we can
- * process them page-at-a-time if needed. If it will cross a chunk
- * boundary, write in a fake (but referenced) entry to pad the chunk.
- *
- * We know that llog_current_log() will return a loghandle that is
- * big enough to hold reclen, so all we care about is padding here.
- */
- left = LLOG_CHUNK_SIZE - (file->f_pos & (LLOG_CHUNK_SIZE - 1));
-
- if (left != 0 && left <= reclen) {
- loghandle->lgh_index++;
- rc = llog_lvfs_pad(file, len, loghandle->lgh_index);
- if (rc)
- RETURN(rc);
- }
-
- index = loghandle->lgh_index++;
- rec->lrh_index = index;
- if (ext2_set_bit(index, llh->llh_bitmap)) {
- CERROR("argh, index %u already set in log bitmap?\n", index);
- LBUG(); /* should never happen */
- }
- llh->llh_count++;
-
-
- offset = 0;
- rc = llog_lvfs_write_blob(file, llh, NULL, 0);
- if (rc)
- RETURN(rc);
-
- rc = llog_lvfs_write_blob(file, rec, buf, file->f_pos);
- if (rc)
- RETURN(rc);
-
- out:
- CDEBUG(D_HA, "added record "LPX64":%x+%u, %u bytes\n",
- loghandle->lgh_cookie.lgc_lgl.lgl_oid,
- loghandle->lgh_cookie.lgc_lgl.lgl_ogen, index, rec->lrh_len);
- if (rc == 0 && reccookie) {
- reccookie->lgc_lgl = loghandle->lgh_id;
- reccookie->lgc_index = index;
- rc = 1;
- }
- RETURN(rc);
-}
-EXPORT_SYMBOL(llog_vfs_write_record);
-
-int llog_lvfs_next_block(struct llog_handle *loghandle, int cur_idx, int next_idx,
- __u64 *cur_offset, void *buf, int len)
-{
- int rc;
- ENTRY;
-
- if (len == 0 || len & (LLOG_CHUNK_SIZE - 1))
- RETURN(-EINVAL);
-
- CDEBUG(D_OTHER, "looking for log index %u (cur idx %u off "LPU64"\n",
- next_idx, cur_idx, *cur_offset);
-
- /* We can skip reading at least as many log blocks as the number of
- * minimum sized log records we are skipping. If it turns out that we
- * are not far enough along the log (because the actual records are
- * larger than minimum size) we just skip some more records. */
- while ((*cur_offset = (*cur_offset +
- (next_idx - cur_idx) * LLOG_MIN_REC_SIZE) &
- ~(LLOG_CHUNK_SIZE - 1)) <
- loghandle->lgh_file->f_dentry->d_inode->i_size) {
- struct llog_rec_hdr *rec;
-
- rc = fsfilt_read_record(loghandle->lgh_obd, loghandle->lgh_file,
- buf, LLOG_CHUNK_SIZE, *cur_offset);
- if (rc)
- RETURN(rc);
-
- rec = buf;
- /* sanity check that the start of the new buffer is no farther
- * than the record that we wanted. This shouldn't happen. */
- if (rec->lrh_index > next_idx) {
- CERROR("missed desired record? %u > %u\n",
- rec->lrh_index, next_idx);
- RETURN(-ENOENT);
- }
-
- /* Check if last record in this buffer is higher than what we
- * are looking for, or is zero (implying that this is the last
- * buffer in the log). In conjunction with the previous test,
- * this means that the record we are looking for is in the
- * current buffer, or the client asked for a record beyond the
- * end of the log, which is the client's problem. */
- rec = buf + LLOG_CHUNK_SIZE - sizeof(__u32);
- if (rec->lrh_index == 0)
- RETURN(0);
-
- cur_idx = rec->lrh_index;
- if (cur_idx >= next_idx) {
- while (rc == 0 && (len -= LLOG_CHUNK_SIZE) > 0) {
- buf += LLOG_CHUNK_SIZE;
- *cur_offset += LLOG_CHUNK_SIZE;
-
- rc = fsfilt_read_record(loghandle->lgh_obd,
- loghandle->lgh_file,
- buf, LLOG_CHUNK_SIZE,
- *cur_offset);
- }
-
- RETURN(rc);
- }
- }
-
- RETURN(-ENOENT);
-}
-EXPORT_SYMBOL(llog_lvfs_next_block);
-
-
-/* This is a callback from the llog_* functions.
- * Assumes caller has already pushed us into the kernel context. */
-int llog_lvfs_create(struct obd_device *obd,
- struct llog_handle **res, char *name)
-{
- char logname[24];
- struct llog_handle *loghandle;
- int rc, open_flags = O_RDWR | O_CREAT | O_LARGEFILE;
- ENTRY;
-
- loghandle = llog_alloc_handle();
- if (!loghandle)
- RETURN(-ENOMEM);
- *res = loghandle;
-
- if (name) {
- sprintf(logname, "LOGS/%s", name);
-
- loghandle->lgh_file = l_filp_open(logname, open_flags, 0644);
- if (IS_ERR(loghandle->lgh_file)) {
- rc = PTR_ERR(loghandle->lgh_file);
- CERROR(D_HA, "logfile creation %s: %d\n", logname, rc);
- obd->u.mds.mds_catalog->lgh_index++;
- GOTO(out_handle, rc);
- }
- loghandle->lgh_cookie.lgc_lgl.lgl_oid =
- loghandle->lgh_file->f_dentry->d_inode->i_ino;
- loghandle->lgh_cookie.lgc_lgl.lgl_ogen =
- loghandle->lgh_file->f_dentry->d_inode->i_generation;
- } else {
- struct obdo *oa;
- struct l_dentry *de;
- oa = obdo_alloc();
- if (!oa)
- GOTO(out, rc = -ENOMEM);
- /* XXX */
- oa->o_gr = 1;
- oa->o_valid = OBD_MD_FLGROUP;
- rc = obd_create(obd->obd_log_exp, oa, NULL, NULL);
- if (rc)
- GOTO(out, rc);
- de = lvfs_fid2dentry(loghandle->lgh_obd = obd, oa);
- if (IS_ERR(de))
- GOTO(out, rc = PTR_ERR(de));
- loghandle->lgh_file = l_dentry_open(de, open_flags);
- if (IS_ERR(loghandle->lgh_file))
- GOTO(out, rc = PTR_ERR(loghandle->lgh_file));
- loghandle->lgh_cookie.lgc_lgl.lgl_oid = oa->o_id;
- loghandle->lgh_cookie.lgc_lgl.lgl_ogr = oa->o_gr;
-
- }
-
- RETURN(loghandle);
-
-out_handle:
- obdo_free(oa);
- llog_free_handle(loghandle);
- return rc;
-}
-
-
-int llog_lvfs_close(struct llog_handle *handle)
-{
- int rc;
- ENTRY;
-
- rc = filp_close(handle->lgh_file, 0);
- if (rc)
- CERROR("error closing log: rc %d\n", rc);
-
- llog_free_handle(handle);
- RETURN(rc);
-}
-
-/* This is a callback from the llog_* functions.
- * Assumes caller has already pushed us into the kernel context. */
-int mds_log_close(struct llog_handle *cathandle, struct llog_handle *loghandle)
-{
- struct llog_log_hdr *llh = loghandle->lgh_hdr;
- struct mds_obd *mds = &cathandle->lgh_obd->u.mds;
- struct dentry *dchild = NULL;
- int rc;
- ENTRY;
-
- /* If we are going to delete this log, grab a ref before we close
- * it so we don't have to immediately do another lookup.
- */
- if (llh->llh_hdr.lrh_type != LLOG_CATALOG_MAGIC && llh->llh_count == 0){
- CDEBUG(D_INODE, "deleting log file "LPX64":%x\n",
- loghandle->lgh_cookie.lgc_lgl.lgl_oid,
- loghandle->lgh_cookie.lgc_lgl.lgl_ogen);
- down(&mds->mds_logs_dir->d_inode->i_sem);
- dchild = dget(loghandle->lgh_file->f_dentry);
- llog_delete_log(cathandle, loghandle);
- } else {
- CDEBUG(D_INODE, "closing log file "LPX64":%x\n",
- loghandle->lgh_cookie.lgc_lgl.lgl_oid,
- loghandle->lgh_cookie.lgc_lgl.lgl_ogen);
- }
-
- rc = filp_close(loghandle->lgh_file, 0);
-
- llog_free_handle(loghandle); /* also removes loghandle from list */
-
- if (dchild) {
- int err = vfs_unlink(mds->mds_logs_dir->d_inode, dchild);
- if (err) {
- CERROR("error unlinking empty log %*s: rc %d\n",
- dchild->d_name.len, dchild->d_name.name, err);
- if (!rc)
- rc = err;
- }
- l_dput(dchild);
- up(&mds->mds_logs_dir->d_inode->i_sem);
- }
- RETURN(rc);
-}
-
-struct llog_handle *mds_log_open(struct obd_device *obd,
- struct llog_cookie *logcookie);
-
-/* This is a callback from the llog_* functions.
- * Assumes caller has already pushed us into the kernel context. */
-static struct llog_handle *filter_log_create(struct obd_device *obd)
-{
- struct filter_obd *filter = &obd->u.filter;
- struct lustre_handle parent_lockh;
- struct dentry *dparent, *dchild;
- struct llog_handle *loghandle;
- struct file *file;
- struct obdo obdo;
- int err, rc;
- obd_id id;
- ENTRY;
-
- loghandle = llog_alloc_handle();
- if (!loghandle)
- RETURN(ERR_PTR(-ENOMEM));
-
- memset(&obdo, 0, sizeof(obdo));
- obdo.o_valid = OBD_MD_FLGROUP;
- obdo.o_gr = 1; /* FIXME: object groups */
- retry:
- id = filter_next_id(filter, &obdo);
-
- dparent = filter_parent_lock(obd, obdo.o_gr, id, LCK_PW, &parent_lockh);
- if (IS_ERR(dparent))
- GOTO(out_ctxt, rc = PTR_ERR(dparent));
-
- dchild = filter_fid2dentry(obd, dparent, obdo.o_gr, id);
- if (IS_ERR(dchild))
- GOTO(out_lock, rc = PTR_ERR(dchild));
-
- if (dchild->d_inode != NULL) {
- /* This would only happen if lastobjid was bad on disk */
- CERROR("Serious error: objid %*s already exists; is this "
- "filesystem corrupt? I will try to work around it.\n",
- dchild->d_name.len, dchild->d_name.name);
- f_dput(dchild);
- ldlm_lock_decref(&parent_lockh, LCK_PW);
- goto retry;
- }
-
- rc = ll_vfs_create(dparent->d_inode, dchild, S_IFREG, NULL);
- if (rc) {
- CERROR("log create failed rc = %d\n", rc);
- GOTO(out_child, rc);
- }
-
- rc = filter_update_last_objid(obd, obdo.o_gr, 0);
- if (rc) {
- CERROR("can't write lastobjid but log created: rc %d\n",rc);
- GOTO(out_destroy, rc);
- }
-
- /* dentry_open does a dput(dchild) and mntput(mnt) on error */
- mntget(filter->fo_vfsmnt);
- file = dentry_open(dchild, filter->fo_vfsmnt, O_RDWR | O_LARGEFILE);
- if (IS_ERR(file)) {
- rc = PTR_ERR(file);
- CERROR("error opening log file "LPX64": rc %d\n", id, rc);
- GOTO(out_destroy, rc);
- }
- ldlm_lock_decref(&parent_lockh, LCK_PW);
-
- loghandle->lgh_file = file;
- loghandle->lgh_cookie.lgc_lgl.lgl_oid = id;
- loghandle->lgh_cookie.lgc_lgl.lgl_ogen = dchild->d_inode->i_generation;
- loghandle->lgh_log_create = filter_log_create;
- loghandle->lgh_log_open = filter_log_open;
- loghandle->lgh_log_close = filter_log_close;
- loghandle->lgh_obd = obd;
-
- RETURN(loghandle);
-
-out_destroy:
- err = vfs_unlink(dparent->d_inode, dchild);
- if (err)
- CERROR("error unlinking %*s on error: rc %d\n",
- dchild->d_name.len, dchild->d_name.name, err);
-out_child:
- f_dput(dchild);
-out_lock:
- ldlm_lock_decref(&parent_lockh, LCK_PW);
-out_ctxt:
- llog_free_handle(loghandle);
- RETURN(ERR_PTR(rc));
-}
-
-/* This is a callback from the llog_* functions.
- * Assumes caller has already pushed us into the kernel context. */
-struct llog_handle *mds_log_open(struct obd_device *obd,
- struct llog_cookie *logcookie)
-{
- struct ll_fid fid = { .id = logcookie->lgc_lgl.lgl_oid,
- .generation = logcookie->lgc_lgl.lgl_ogen,
- .f_type = S_IFREG };
- struct llog_handle *loghandle;
- struct dentry *dchild;
- int rc;
- ENTRY;
-
- loghandle = llog_alloc_handle();
- if (loghandle == NULL)
- RETURN(ERR_PTR(-ENOMEM));
-
- down(&obd->u.mds.mds_logs_dir->d_inode->i_sem);
- dchild = mds_fid2dentry(&obd->u.mds, &fid, NULL);
- up(&obd->u.mds.mds_logs_dir->d_inode->i_sem);
- if (IS_ERR(dchild)) {
- rc = PTR_ERR(dchild);
- CERROR("error looking up log file "LPX64":%x: rc %d\n",
- fid.id, fid.generation, rc);
- GOTO(out, rc);
- }
-
- if (dchild->d_inode == NULL) {
- rc = -ENOENT;
- CERROR("nonexistent log file "LPX64":%x: rc %d\n",
- fid.id, fid.generation, rc);
- GOTO(out_put, rc);
- }
-
- /* dentry_open does a dput(de) and mntput(mds->mds_vfsmnt) on error */
- mntget(obd->u.mds.mds_vfsmnt);
- loghandle->lgh_file = dentry_open(dchild, obd->u.mds.mds_vfsmnt,
- O_RDWR | O_LARGEFILE);
- if (IS_ERR(loghandle->lgh_file)) {
- rc = PTR_ERR(loghandle->lgh_file);
- CERROR("error opening logfile "LPX64":%x: rc %d\n",
- fid.id, fid.generation, rc);
- GOTO(out, rc);
- }
- memcpy(&loghandle->lgh_cookie, logcookie, sizeof(*logcookie));
- loghandle->lgh_log_create = mds_log_create;
- loghandle->lgh_log_open = mds_log_open;
- loghandle->lgh_log_close = mds_log_close;
- loghandle->lgh_obd = obd;
-
- RETURN(loghandle);
-
-out_put:
- l_dput(dchild);
-out:
- llog_free_handle(loghandle);
- return ERR_PTR(rc);
-}
-
-
-
-struct llog_handle *mds_get_catalog(struct obd_device *obd)
-{
- struct mds_server_data *msd = obd->u.mds.mds_server_data;
- struct obd_run_ctxt saved;
- struct llog_handle *cathandle = NULL;
- int rc = 0;
- ENTRY;
-
- push_ctxt(&saved, &obd->u.mds.mds_ctxt, NULL);
-
- if (msd->msd_catalog_oid) {
- struct llog_cookie catcookie;
-
- catcookie.lgc_lgl.lgl_oid = le64_to_cpu(msd->msd_catalog_oid);
- catcookie.lgc_lgl.lgl_ogen = le32_to_cpu(msd->msd_catalog_ogen);
- cathandle = mds_log_open(obd, &catcookie);
- if (IS_ERR(cathandle)) {
- CERROR("error opening catalog "LPX64":%x: rc %d\n",
- catcookie.lgc_lgl.lgl_oid,
- catcookie.lgc_lgl.lgl_ogen,
- (int)PTR_ERR(cathandle));
- msd->msd_catalog_oid = 0;
- msd->msd_catalog_ogen = 0;
- }
- /* ORPHANS FIXME: compare catalog UUID to msd_peeruuid */
- }
-
- if (!msd->msd_catalog_oid) {
- struct llog_logid *lgl;
-
- cathandle = mds_log_create(obd, "LOGS/catalog");
- if (IS_ERR(cathandle)) {
- CERROR("error creating new catalog: rc %d\n",
- (int)PTR_ERR(cathandle));
- GOTO(out, cathandle);
- }
- lgl = &cathandle->lgh_cookie.lgc_lgl;
- msd->msd_catalog_oid = cpu_to_le64(lgl->lgl_oid);
- msd->msd_catalog_ogen = cpu_to_le32(lgl->lgl_ogen);
- rc = mds_update_server_data(obd, 1);
- if (rc) {
- CERROR("error writing new catalog to disk: rc %d\n",rc);
- GOTO(out_handle, rc);
- }
- }
-
- rc = llog_init_catalog(cathandle, &obd->u.mds.mds_lov_name);
-
-out:
- pop_ctxt(&saved, &obd->u.mds.mds_ctxt, NULL);
- RETURN(cathandle);
-
-out_handle:
- mds_log_close(cathandle, cathandle);
- cathandle = ERR_PTR(rc);
- goto out;
-
-}
-
-static struct llog_handle *filter_log_create(struct obd_device *obd);
-
-/* This is a callback from the llog_* functions.
- * Assumes caller has already pushed us into the kernel context. */
-static int filter_log_close(struct llog_handle *cathandle,
- struct llog_handle *loghandle)
-{
- struct llog_object_hdr *llh = loghandle->lgh_hdr;
- struct file *file = loghandle->lgh_file;
- struct dentry *dparent = NULL, *dchild = NULL;
- struct lustre_handle parent_lockh;
- struct llog_logid *lgl = &loghandle->lgh_cookie.lgc_lgl;
- int rc;
- ENTRY;
-
- /* If we are going to delete this log, grab a ref before we close
- * it so we don't have to immediately do another lookup. */
- if (llh->llh_hdr.lth_type != LLOG_CATALOG_MAGIC && llh->llh_count == 0){
- CDEBUG(D_INODE, "deleting log file "LPX64":%x\n",
- lgl->lgl_oid, lgl->lgl_ogen);
- dparent = filter_parent_lock(loghandle->lgh_obd, S_IFREG,
- lgl->lgl_oid,LCK_PW,&parent_lockh);
- if (IS_ERR(dparent)) {
- rc = PTR_ERR(dparent);
- CERROR("error locking parent, orphan log %*s: rc %d\n",
- file->f_dentry->d_name.len,
- file->f_dentry->d_name.name, rc);
- RETURN(rc);
- } else {
- dchild = dget(file->f_dentry);
- llog_delete_log(cathandle, loghandle);
- }
- } else {
- CDEBUG(D_INODE, "closing log file "LPX64":%x\n",
- lgl->lgl_oid, lgl->lgl_ogen);
- }
-
- rc = filp_close(file, 0);
-
- llog_free_handle(loghandle); /* also removes loghandle from list */
-
- if (dchild != NULL) {
- int err = vfs_unlink(dparent->d_inode, dchild);
- if (err) {
- CERROR("error unlinking empty log %*s: rc %d\n",
- dchild->d_name.len, dchild->d_name.name, err);
- if (!rc)
- rc = err;
- }
- f_dput(dchild);
- ldlm_lock_decref(&parent_lockh, LCK_PW);
- }
- RETURN(rc);
-}
-
-/* This is a callback from the llog_* functions.
- * Assumes caller has already pushed us into the kernel context. */
-static struct llog_handle *filter_log_open(struct obd_device *obd,
- struct llog_cookie *logcookie)
-{
- struct llog_logid *lgl = &logcookie->lgc_lgl;
- struct llog_handle *loghandle;
- struct dentry *dchild;
- int rc;
- ENTRY;
-
- loghandle = llog_alloc_handle();
- if (!loghandle)
- RETURN(ERR_PTR(-ENOMEM));
-
- dchild = filter_fid2dentry(obd, NULL, S_IFREG, lgl->lgl_oid);
- if (IS_ERR(dchild))
- GOTO(out_handle, rc = PTR_ERR(dchild));
-
- if (dchild->d_inode == NULL) {
- CERROR("logcookie references non-existent object %*s\n",
- dchild->d_name.len, dchild->d_name.name);
- GOTO(out_dentry, rc = -ENOENT);
- }
-
- if (dchild->d_inode->i_generation != lgl->lgl_ogen) {
- CERROR("logcookie for %*s had different generation %x != %x\n",
- dchild->d_name.len, dchild->d_name.name,
- dchild->d_inode->i_generation, lgl->lgl_ogen);
- GOTO(out_dentry, rc = -ESTALE);
- }
-
- /* dentry_open does a dput(dchild) and mntput(mnt) on error */
- mntget(obd->u.filter.fo_vfsmnt);
- loghandle->lgh_file = dentry_open(dchild, obd->u.filter.fo_vfsmnt,
- O_RDWR);
- if (IS_ERR(loghandle->lgh_file)) {
- rc = PTR_ERR(loghandle->lgh_file);
- CERROR("error opening logfile %*s: rc %d\n",
- dchild->d_name.len, dchild->d_name.name, rc);
- GOTO(out_dentry, rc);
- }
- memcpy(&loghandle->lgh_cookie, logcookie, sizeof(*logcookie));
- loghandle->lgh_obd = obd;
- RETURN(loghandle);
-
-out_dentry:
- f_dput(dchild);
-out_handle:
- llog_free_handle(loghandle);
- RETURN(ERR_PTR(rc));
-}
-
-
-/* This is called from filter_setup() and should be single threaded */
-struct llog_handle *filter_get_catalog(struct obd_device *obd)
-{
- struct filter_obd *filter = &obd->u.filter;
- struct filter_server_data *fsd = filter->fo_fsd;
- struct obd_run_ctxt saved;
- struct llog_handle *cathandle = NULL;
- int rc;
- ENTRY;
-
- push_ctxt(&saved, &filter->fo_ctxt, NULL);
- if (fsd->fsd_catalog_oid) {
- struct llog_cookie catcookie;
-
- catcookie.lgc_lgl.lgl_oid = le64_to_cpu(fsd->fsd_catalog_oid);
- catcookie.lgc_lgl.lgl_ogen = le32_to_cpu(fsd->fsd_catalog_ogen);
- cathandle = filter_log_open(obd, &catcookie);
- if (IS_ERR(cathandle)) {
- CERROR("error opening catalog "LPX64":%x: rc %d\n",
- catcookie.lgc_lgl.lgl_oid,
- catcookie.lgc_lgl.lgl_ogen,
- (int)PTR_ERR(cathandle));
- fsd->fsd_catalog_oid = 0;
- fsd->fsd_catalog_ogen = 0;
- }
- }
-
- if (!fsd->fsd_catalog_oid) {
- struct llog_logid *lgl;
-
- cathandle = filter_log_create(obd);
- if (IS_ERR(cathandle)) {
- CERROR("error creating new catalog: rc %d\n",
- (int)PTR_ERR(cathandle));
- GOTO(out, cathandle);
- }
- lgl = &cathandle->lgh_cookie.lgc_lgl;
- fsd->fsd_catalog_oid = cpu_to_le64(lgl->lgl_oid);
- fsd->fsd_catalog_ogen = cpu_to_le32(lgl->lgl_ogen);
- rc = filter_update_server_data(obd, filter->fo_rcvd_filp,fsd,0);
- if (rc) {
- CERROR("error writing new catalog to disk: rc %d\n",rc);
- GOTO(out_handle, rc);
- }
- }
-
- rc = llog_cat_init(cathandle, &obd->u.filter.fo_mdc_uuid);
- if (rc)
- GOTO(out_handle, rc);
-out:
- pop_ctxt(&saved, &filter->fo_ctxt, NULL);
- RETURN(cathandle);
-
-out_handle:
- filter_log_close(cathandle, cathandle);
- cathandle = ERR_PTR(rc);
- goto out;
-}
-
-void filter_put_catalog(struct llog_handle *cathandle)
-{
- struct llog_handle *loghandle, *n;
- int rc;
- ENTRY;
-
- list_for_each_entry_safe(loghandle, n, &cathandle->lgh_list, lgh_list)
- filter_log_close(cathandle, loghandle);
-
- rc = filp_close(cathandle->lgh_file, 0);
- if (rc)
- CERROR("error closing catalog: rc %d\n", rc);
-
- llog_free_handle(cathandle);
- EXIT;
-}
-
-int filter_log_cancel(struct obd_export *exp, struct lov_stripe_md *lsm,
- int num_cookies, struct llog_cookie *logcookies,
- int flags)
-{
- struct obd_device *obd = exp->exp_obd;
- struct obd_run_ctxt saved;
- int rc;
- ENTRY;
-
- push_ctxt(&saved, &obd->u.filter.fo_ctxt, NULL);
- rc = llog_cancel_records(obd->u.filter.fo_catalog, num_cookies,
- logcookies);
- pop_ctxt(&saved, &obd->u.filter.fo_ctxt, NULL);
-
- RETURN(rc);
-}
-
-struct llog_operations llog_lvfs_ops = {
- lop_write_rec: llog_lvfs_write_rec;
- lop_next_block: llog_lvfs_next_block;
- lop_open: llog_lvfs_open;
- lop_cancel: llog_lvfs_cancel;
- lop_create:llog_lvfs_create;
- lop_close:llog_lvfs_close;
-}
-EXPORT_SYMBOL(llog_lvfs_ops);
git://git.whamcloud.com / fs / lustre-release.git / commitdiff