e678fb0d52
Change all the uses of f_{dentry,vfsmnt} to f_path.{dentry,mnt} in the xfs
filesystem.
Signed-off-by: Josef "Jeff" Sipek <jsipek@cs.sunysb.edu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
517 lines
12 KiB
C
517 lines
12 KiB
C
/*
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* Copyright (c) 2000-2005 Silicon Graphics, Inc.
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "xfs.h"
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#include "xfs_bit.h"
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#include "xfs_log.h"
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#include "xfs_inum.h"
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#include "xfs_sb.h"
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#include "xfs_ag.h"
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#include "xfs_dir2.h"
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#include "xfs_trans.h"
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#include "xfs_dmapi.h"
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#include "xfs_mount.h"
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#include "xfs_bmap_btree.h"
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#include "xfs_alloc_btree.h"
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#include "xfs_ialloc_btree.h"
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#include "xfs_alloc.h"
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#include "xfs_btree.h"
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#include "xfs_attr_sf.h"
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#include "xfs_dir2_sf.h"
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#include "xfs_dinode.h"
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#include "xfs_inode.h"
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#include "xfs_error.h"
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#include "xfs_rw.h"
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#include "xfs_ioctl32.h"
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#include <linux/dcache.h>
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#include <linux/smp_lock.h>
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static struct vm_operations_struct xfs_file_vm_ops;
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#ifdef CONFIG_XFS_DMAPI
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static struct vm_operations_struct xfs_dmapi_file_vm_ops;
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#endif
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STATIC inline ssize_t
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__xfs_file_read(
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struct kiocb *iocb,
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const struct iovec *iov,
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unsigned long nr_segs,
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int ioflags,
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loff_t pos)
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{
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struct file *file = iocb->ki_filp;
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bhv_vnode_t *vp = vn_from_inode(file->f_path.dentry->d_inode);
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BUG_ON(iocb->ki_pos != pos);
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if (unlikely(file->f_flags & O_DIRECT))
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ioflags |= IO_ISDIRECT;
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return bhv_vop_read(vp, iocb, iov, nr_segs, &iocb->ki_pos,
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ioflags, NULL);
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}
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STATIC ssize_t
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xfs_file_aio_read(
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struct kiocb *iocb,
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const struct iovec *iov,
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unsigned long nr_segs,
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loff_t pos)
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{
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return __xfs_file_read(iocb, iov, nr_segs, IO_ISAIO, pos);
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}
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STATIC ssize_t
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xfs_file_aio_read_invis(
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struct kiocb *iocb,
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const struct iovec *iov,
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unsigned long nr_segs,
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loff_t pos)
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{
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return __xfs_file_read(iocb, iov, nr_segs, IO_ISAIO|IO_INVIS, pos);
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}
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STATIC inline ssize_t
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__xfs_file_write(
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struct kiocb *iocb,
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const struct iovec *iov,
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unsigned long nr_segs,
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int ioflags,
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loff_t pos)
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{
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struct file *file = iocb->ki_filp;
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struct inode *inode = file->f_mapping->host;
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bhv_vnode_t *vp = vn_from_inode(inode);
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BUG_ON(iocb->ki_pos != pos);
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if (unlikely(file->f_flags & O_DIRECT))
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ioflags |= IO_ISDIRECT;
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return bhv_vop_write(vp, iocb, iov, nr_segs, &iocb->ki_pos,
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ioflags, NULL);
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}
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STATIC ssize_t
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xfs_file_aio_write(
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struct kiocb *iocb,
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const struct iovec *iov,
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unsigned long nr_segs,
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loff_t pos)
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{
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return __xfs_file_write(iocb, iov, nr_segs, IO_ISAIO, pos);
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}
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STATIC ssize_t
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xfs_file_aio_write_invis(
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struct kiocb *iocb,
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const struct iovec *iov,
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unsigned long nr_segs,
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loff_t pos)
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{
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return __xfs_file_write(iocb, iov, nr_segs, IO_ISAIO|IO_INVIS, pos);
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}
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STATIC ssize_t
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xfs_file_sendfile(
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struct file *filp,
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loff_t *pos,
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size_t count,
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read_actor_t actor,
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void *target)
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{
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return bhv_vop_sendfile(vn_from_inode(filp->f_path.dentry->d_inode),
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filp, pos, 0, count, actor, target, NULL);
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}
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STATIC ssize_t
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xfs_file_sendfile_invis(
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struct file *filp,
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loff_t *pos,
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size_t count,
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read_actor_t actor,
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void *target)
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{
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return bhv_vop_sendfile(vn_from_inode(filp->f_path.dentry->d_inode),
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filp, pos, IO_INVIS, count, actor, target, NULL);
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}
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STATIC ssize_t
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xfs_file_splice_read(
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struct file *infilp,
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loff_t *ppos,
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struct pipe_inode_info *pipe,
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size_t len,
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unsigned int flags)
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{
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return bhv_vop_splice_read(vn_from_inode(infilp->f_path.dentry->d_inode),
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infilp, ppos, pipe, len, flags, 0, NULL);
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}
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STATIC ssize_t
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xfs_file_splice_read_invis(
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struct file *infilp,
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loff_t *ppos,
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struct pipe_inode_info *pipe,
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size_t len,
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unsigned int flags)
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{
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return bhv_vop_splice_read(vn_from_inode(infilp->f_path.dentry->d_inode),
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infilp, ppos, pipe, len, flags, IO_INVIS,
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NULL);
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}
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STATIC ssize_t
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xfs_file_splice_write(
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struct pipe_inode_info *pipe,
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struct file *outfilp,
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loff_t *ppos,
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size_t len,
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unsigned int flags)
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{
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return bhv_vop_splice_write(vn_from_inode(outfilp->f_path.dentry->d_inode),
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pipe, outfilp, ppos, len, flags, 0, NULL);
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}
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STATIC ssize_t
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xfs_file_splice_write_invis(
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struct pipe_inode_info *pipe,
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struct file *outfilp,
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loff_t *ppos,
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size_t len,
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unsigned int flags)
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{
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return bhv_vop_splice_write(vn_from_inode(outfilp->f_path.dentry->d_inode),
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pipe, outfilp, ppos, len, flags, IO_INVIS,
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NULL);
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}
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STATIC int
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xfs_file_open(
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struct inode *inode,
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struct file *filp)
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{
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if (!(filp->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS)
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return -EFBIG;
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return -bhv_vop_open(vn_from_inode(inode), NULL);
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}
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STATIC int
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xfs_file_close(
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struct file *filp,
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fl_owner_t id)
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{
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return -bhv_vop_close(vn_from_inode(filp->f_path.dentry->d_inode), 0,
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file_count(filp) > 1 ? L_FALSE : L_TRUE, NULL);
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}
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STATIC int
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xfs_file_release(
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struct inode *inode,
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struct file *filp)
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{
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bhv_vnode_t *vp = vn_from_inode(inode);
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if (vp)
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return -bhv_vop_release(vp);
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return 0;
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}
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STATIC int
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xfs_file_fsync(
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struct file *filp,
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struct dentry *dentry,
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int datasync)
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{
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bhv_vnode_t *vp = vn_from_inode(dentry->d_inode);
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int flags = FSYNC_WAIT;
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if (datasync)
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flags |= FSYNC_DATA;
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if (VN_TRUNC(vp))
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VUNTRUNCATE(vp);
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return -bhv_vop_fsync(vp, flags, NULL, (xfs_off_t)0, (xfs_off_t)-1);
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}
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#ifdef CONFIG_XFS_DMAPI
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STATIC struct page *
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xfs_vm_nopage(
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struct vm_area_struct *area,
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unsigned long address,
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int *type)
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{
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struct inode *inode = area->vm_file->f_path.dentry->d_inode;
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bhv_vnode_t *vp = vn_from_inode(inode);
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ASSERT_ALWAYS(vp->v_vfsp->vfs_flag & VFS_DMI);
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if (XFS_SEND_MMAP(XFS_VFSTOM(vp->v_vfsp), area, 0))
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return NULL;
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return filemap_nopage(area, address, type);
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}
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#endif /* CONFIG_XFS_DMAPI */
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STATIC int
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xfs_file_readdir(
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struct file *filp,
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void *dirent,
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filldir_t filldir)
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{
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int error = 0;
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bhv_vnode_t *vp = vn_from_inode(filp->f_path.dentry->d_inode);
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uio_t uio;
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iovec_t iov;
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int eof = 0;
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caddr_t read_buf;
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int namelen, size = 0;
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size_t rlen = PAGE_CACHE_SIZE;
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xfs_off_t start_offset, curr_offset;
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xfs_dirent_t *dbp = NULL;
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/* Try fairly hard to get memory */
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do {
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if ((read_buf = kmalloc(rlen, GFP_KERNEL)))
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break;
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rlen >>= 1;
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} while (rlen >= 1024);
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if (read_buf == NULL)
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return -ENOMEM;
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uio.uio_iov = &iov;
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uio.uio_segflg = UIO_SYSSPACE;
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curr_offset = filp->f_pos;
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if (filp->f_pos != 0x7fffffff)
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uio.uio_offset = filp->f_pos;
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else
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uio.uio_offset = 0xffffffff;
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while (!eof) {
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uio.uio_resid = iov.iov_len = rlen;
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iov.iov_base = read_buf;
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uio.uio_iovcnt = 1;
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start_offset = uio.uio_offset;
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error = bhv_vop_readdir(vp, &uio, NULL, &eof);
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if ((uio.uio_offset == start_offset) || error) {
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size = 0;
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break;
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}
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size = rlen - uio.uio_resid;
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dbp = (xfs_dirent_t *)read_buf;
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while (size > 0) {
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namelen = strlen(dbp->d_name);
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if (filldir(dirent, dbp->d_name, namelen,
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(loff_t) curr_offset & 0x7fffffff,
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(ino_t) dbp->d_ino,
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DT_UNKNOWN)) {
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goto done;
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}
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size -= dbp->d_reclen;
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curr_offset = (loff_t)dbp->d_off /* & 0x7fffffff */;
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dbp = (xfs_dirent_t *)((char *)dbp + dbp->d_reclen);
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}
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}
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done:
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if (!error) {
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if (size == 0)
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filp->f_pos = uio.uio_offset & 0x7fffffff;
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else if (dbp)
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filp->f_pos = curr_offset;
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}
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kfree(read_buf);
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return -error;
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}
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STATIC int
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xfs_file_mmap(
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struct file *filp,
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struct vm_area_struct *vma)
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{
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vma->vm_ops = &xfs_file_vm_ops;
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#ifdef CONFIG_XFS_DMAPI
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if (vn_from_inode(filp->f_path.dentry->d_inode)->v_vfsp->vfs_flag & VFS_DMI)
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vma->vm_ops = &xfs_dmapi_file_vm_ops;
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#endif /* CONFIG_XFS_DMAPI */
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file_accessed(filp);
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return 0;
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}
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STATIC long
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xfs_file_ioctl(
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struct file *filp,
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unsigned int cmd,
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unsigned long p)
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{
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int error;
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struct inode *inode = filp->f_path.dentry->d_inode;
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bhv_vnode_t *vp = vn_from_inode(inode);
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error = bhv_vop_ioctl(vp, inode, filp, 0, cmd, (void __user *)p);
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VMODIFY(vp);
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/* NOTE: some of the ioctl's return positive #'s as a
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* byte count indicating success, such as
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* readlink_by_handle. So we don't "sign flip"
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* like most other routines. This means true
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* errors need to be returned as a negative value.
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*/
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return error;
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}
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STATIC long
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xfs_file_ioctl_invis(
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struct file *filp,
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unsigned int cmd,
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unsigned long p)
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{
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int error;
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struct inode *inode = filp->f_path.dentry->d_inode;
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bhv_vnode_t *vp = vn_from_inode(inode);
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error = bhv_vop_ioctl(vp, inode, filp, IO_INVIS, cmd, (void __user *)p);
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VMODIFY(vp);
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/* NOTE: some of the ioctl's return positive #'s as a
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* byte count indicating success, such as
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* readlink_by_handle. So we don't "sign flip"
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* like most other routines. This means true
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* errors need to be returned as a negative value.
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*/
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return error;
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}
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#ifdef CONFIG_XFS_DMAPI
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#ifdef HAVE_VMOP_MPROTECT
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STATIC int
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xfs_vm_mprotect(
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struct vm_area_struct *vma,
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unsigned int newflags)
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{
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bhv_vnode_t *vp = vn_from_inode(vma->vm_file->f_path.dentry->d_inode);
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int error = 0;
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if (vp->v_vfsp->vfs_flag & VFS_DMI) {
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if ((vma->vm_flags & VM_MAYSHARE) &&
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(newflags & VM_WRITE) && !(vma->vm_flags & VM_WRITE)) {
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xfs_mount_t *mp = XFS_VFSTOM(vp->v_vfsp);
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error = XFS_SEND_MMAP(mp, vma, VM_WRITE);
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}
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}
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return error;
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}
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#endif /* HAVE_VMOP_MPROTECT */
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#endif /* CONFIG_XFS_DMAPI */
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#ifdef HAVE_FOP_OPEN_EXEC
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/* If the user is attempting to execute a file that is offline then
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* we have to trigger a DMAPI READ event before the file is marked as busy
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* otherwise the invisible I/O will not be able to write to the file to bring
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* it back online.
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*/
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STATIC int
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xfs_file_open_exec(
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struct inode *inode)
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{
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bhv_vnode_t *vp = vn_from_inode(inode);
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if (unlikely(vp->v_vfsp->vfs_flag & VFS_DMI)) {
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xfs_mount_t *mp = XFS_VFSTOM(vp->v_vfsp);
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xfs_inode_t *ip = xfs_vtoi(vp);
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if (!ip)
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return -EINVAL;
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if (DM_EVENT_ENABLED(vp->v_vfsp, ip, DM_EVENT_READ))
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return -XFS_SEND_DATA(mp, DM_EVENT_READ, vp,
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0, 0, 0, NULL);
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}
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return 0;
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}
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#endif /* HAVE_FOP_OPEN_EXEC */
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const struct file_operations xfs_file_operations = {
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.llseek = generic_file_llseek,
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.read = do_sync_read,
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.write = do_sync_write,
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.aio_read = xfs_file_aio_read,
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.aio_write = xfs_file_aio_write,
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.sendfile = xfs_file_sendfile,
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.splice_read = xfs_file_splice_read,
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.splice_write = xfs_file_splice_write,
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.unlocked_ioctl = xfs_file_ioctl,
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#ifdef CONFIG_COMPAT
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.compat_ioctl = xfs_file_compat_ioctl,
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#endif
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.mmap = xfs_file_mmap,
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.open = xfs_file_open,
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.flush = xfs_file_close,
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.release = xfs_file_release,
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.fsync = xfs_file_fsync,
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#ifdef HAVE_FOP_OPEN_EXEC
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.open_exec = xfs_file_open_exec,
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#endif
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};
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const struct file_operations xfs_invis_file_operations = {
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.llseek = generic_file_llseek,
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.read = do_sync_read,
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.write = do_sync_write,
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.aio_read = xfs_file_aio_read_invis,
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.aio_write = xfs_file_aio_write_invis,
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.sendfile = xfs_file_sendfile_invis,
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.splice_read = xfs_file_splice_read_invis,
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.splice_write = xfs_file_splice_write_invis,
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.unlocked_ioctl = xfs_file_ioctl_invis,
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#ifdef CONFIG_COMPAT
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.compat_ioctl = xfs_file_compat_invis_ioctl,
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#endif
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.mmap = xfs_file_mmap,
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.open = xfs_file_open,
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.flush = xfs_file_close,
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.release = xfs_file_release,
|
|
.fsync = xfs_file_fsync,
|
|
};
|
|
|
|
|
|
const struct file_operations xfs_dir_file_operations = {
|
|
.read = generic_read_dir,
|
|
.readdir = xfs_file_readdir,
|
|
.unlocked_ioctl = xfs_file_ioctl,
|
|
#ifdef CONFIG_COMPAT
|
|
.compat_ioctl = xfs_file_compat_ioctl,
|
|
#endif
|
|
.fsync = xfs_file_fsync,
|
|
};
|
|
|
|
static struct vm_operations_struct xfs_file_vm_ops = {
|
|
.nopage = filemap_nopage,
|
|
.populate = filemap_populate,
|
|
};
|
|
|
|
#ifdef CONFIG_XFS_DMAPI
|
|
static struct vm_operations_struct xfs_dmapi_file_vm_ops = {
|
|
.nopage = xfs_vm_nopage,
|
|
.populate = filemap_populate,
|
|
#ifdef HAVE_VMOP_MPROTECT
|
|
.mprotect = xfs_vm_mprotect,
|
|
#endif
|
|
};
|
|
#endif /* CONFIG_XFS_DMAPI */
|