diff options
Diffstat (limited to 'fs/xfs/linux-2.6/xfs_file.c')
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_file.c | 493 |
1 files changed, 0 insertions, 493 deletions
diff --git a/fs/xfs/linux-2.6/xfs_file.c b/fs/xfs/linux-2.6/xfs_file.c deleted file mode 100644 index 0d4001eafd1..00000000000 --- a/fs/xfs/linux-2.6/xfs_file.c +++ /dev/null @@ -1,493 +0,0 @@ -/* - * Copyright (c) 2000-2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would 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 this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include "xfs.h" -#include "xfs_bit.h" -#include "xfs_log.h" -#include "xfs_inum.h" -#include "xfs_sb.h" -#include "xfs_ag.h" -#include "xfs_dir2.h" -#include "xfs_trans.h" -#include "xfs_dmapi.h" -#include "xfs_mount.h" -#include "xfs_bmap_btree.h" -#include "xfs_alloc_btree.h" -#include "xfs_ialloc_btree.h" -#include "xfs_alloc.h" -#include "xfs_btree.h" -#include "xfs_attr_sf.h" -#include "xfs_dir2_sf.h" -#include "xfs_dinode.h" -#include "xfs_inode.h" -#include "xfs_error.h" -#include "xfs_rw.h" -#include "xfs_ioctl32.h" - -#include <linux/dcache.h> -#include <linux/smp_lock.h> - -static struct vm_operations_struct xfs_file_vm_ops; -#ifdef CONFIG_XFS_DMAPI -static struct vm_operations_struct xfs_dmapi_file_vm_ops; -#endif - -STATIC_INLINE ssize_t -__xfs_file_read( - struct kiocb *iocb, - const struct iovec *iov, - unsigned long nr_segs, - int ioflags, - loff_t pos) -{ - struct file *file = iocb->ki_filp; - bhv_vnode_t *vp = vn_from_inode(file->f_path.dentry->d_inode); - - BUG_ON(iocb->ki_pos != pos); - if (unlikely(file->f_flags & O_DIRECT)) - ioflags |= IO_ISDIRECT; - return bhv_vop_read(vp, iocb, iov, nr_segs, &iocb->ki_pos, - ioflags, NULL); -} - -STATIC ssize_t -xfs_file_aio_read( - struct kiocb *iocb, - const struct iovec *iov, - unsigned long nr_segs, - loff_t pos) -{ - return __xfs_file_read(iocb, iov, nr_segs, IO_ISAIO, pos); -} - -STATIC ssize_t -xfs_file_aio_read_invis( - struct kiocb *iocb, - const struct iovec *iov, - unsigned long nr_segs, - loff_t pos) -{ - return __xfs_file_read(iocb, iov, nr_segs, IO_ISAIO|IO_INVIS, pos); -} - -STATIC_INLINE ssize_t -__xfs_file_write( - struct kiocb *iocb, - const struct iovec *iov, - unsigned long nr_segs, - int ioflags, - loff_t pos) -{ - struct file *file = iocb->ki_filp; - struct inode *inode = file->f_mapping->host; - bhv_vnode_t *vp = vn_from_inode(inode); - - BUG_ON(iocb->ki_pos != pos); - if (unlikely(file->f_flags & O_DIRECT)) - ioflags |= IO_ISDIRECT; - return bhv_vop_write(vp, iocb, iov, nr_segs, &iocb->ki_pos, - ioflags, NULL); -} - -STATIC ssize_t -xfs_file_aio_write( - struct kiocb *iocb, - const struct iovec *iov, - unsigned long nr_segs, - loff_t pos) -{ - return __xfs_file_write(iocb, iov, nr_segs, IO_ISAIO, pos); -} - -STATIC ssize_t -xfs_file_aio_write_invis( - struct kiocb *iocb, - const struct iovec *iov, - unsigned long nr_segs, - loff_t pos) -{ - return __xfs_file_write(iocb, iov, nr_segs, IO_ISAIO|IO_INVIS, pos); -} - -STATIC ssize_t -xfs_file_splice_read( - struct file *infilp, - loff_t *ppos, - struct pipe_inode_info *pipe, - size_t len, - unsigned int flags) -{ - return bhv_vop_splice_read(vn_from_inode(infilp->f_path.dentry->d_inode), - infilp, ppos, pipe, len, flags, 0, NULL); -} - -STATIC ssize_t -xfs_file_splice_read_invis( - struct file *infilp, - loff_t *ppos, - struct pipe_inode_info *pipe, - size_t len, - unsigned int flags) -{ - return bhv_vop_splice_read(vn_from_inode(infilp->f_path.dentry->d_inode), - infilp, ppos, pipe, len, flags, IO_INVIS, - NULL); -} - -STATIC ssize_t -xfs_file_splice_write( - struct pipe_inode_info *pipe, - struct file *outfilp, - loff_t *ppos, - size_t len, - unsigned int flags) -{ - return bhv_vop_splice_write(vn_from_inode(outfilp->f_path.dentry->d_inode), - pipe, outfilp, ppos, len, flags, 0, NULL); -} - -STATIC ssize_t -xfs_file_splice_write_invis( - struct pipe_inode_info *pipe, - struct file *outfilp, - loff_t *ppos, - size_t len, - unsigned int flags) -{ - return bhv_vop_splice_write(vn_from_inode(outfilp->f_path.dentry->d_inode), - pipe, outfilp, ppos, len, flags, IO_INVIS, - NULL); -} - -STATIC int -xfs_file_open( - struct inode *inode, - struct file *filp) -{ - if (!(filp->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS) - return -EFBIG; - return -bhv_vop_open(vn_from_inode(inode), NULL); -} - -STATIC int -xfs_file_release( - struct inode *inode, - struct file *filp) -{ - bhv_vnode_t *vp = vn_from_inode(inode); - - if (vp) - return -bhv_vop_release(vp); - return 0; -} - -STATIC int -xfs_file_fsync( - struct file *filp, - struct dentry *dentry, - int datasync) -{ - bhv_vnode_t *vp = vn_from_inode(dentry->d_inode); - int flags = FSYNC_WAIT; - - if (datasync) - flags |= FSYNC_DATA; - if (VN_TRUNC(vp)) - VUNTRUNCATE(vp); - return -bhv_vop_fsync(vp, flags, NULL, (xfs_off_t)0, (xfs_off_t)-1); -} - -#ifdef CONFIG_XFS_DMAPI -STATIC int -xfs_vm_fault( - struct vm_area_struct *vma, - struct vm_fault *vmf) -{ - struct inode *inode = vma->vm_file->f_path.dentry->d_inode; - bhv_vnode_t *vp = vn_from_inode(inode); - - ASSERT_ALWAYS(vp->v_vfsp->vfs_flag & VFS_DMI); - if (XFS_SEND_MMAP(XFS_VFSTOM(vp->v_vfsp), vma, 0)) - return VM_FAULT_SIGBUS; - return filemap_fault(vma, vmf); -} -#endif /* CONFIG_XFS_DMAPI */ - -STATIC int -xfs_file_readdir( - struct file *filp, - void *dirent, - filldir_t filldir) -{ - int error = 0; - bhv_vnode_t *vp = vn_from_inode(filp->f_path.dentry->d_inode); - uio_t uio; - iovec_t iov; - int eof = 0; - caddr_t read_buf; - int namelen, size = 0; - size_t rlen = PAGE_CACHE_SIZE; - xfs_off_t start_offset, curr_offset; - xfs_dirent_t *dbp = NULL; - - /* Try fairly hard to get memory */ - do { - if ((read_buf = kmalloc(rlen, GFP_KERNEL))) - break; - rlen >>= 1; - } while (rlen >= 1024); - - if (read_buf == NULL) - return -ENOMEM; - - uio.uio_iov = &iov; - uio.uio_segflg = UIO_SYSSPACE; - curr_offset = filp->f_pos; - if (filp->f_pos != 0x7fffffff) - uio.uio_offset = filp->f_pos; - else - uio.uio_offset = 0xffffffff; - - while (!eof) { - uio.uio_resid = iov.iov_len = rlen; - iov.iov_base = read_buf; - uio.uio_iovcnt = 1; - - start_offset = uio.uio_offset; - - error = bhv_vop_readdir(vp, &uio, NULL, &eof); - if ((uio.uio_offset == start_offset) || error) { - size = 0; - break; - } - - size = rlen - uio.uio_resid; - dbp = (xfs_dirent_t *)read_buf; - while (size > 0) { - namelen = strlen(dbp->d_name); - - if (filldir(dirent, dbp->d_name, namelen, - (loff_t) curr_offset & 0x7fffffff, - (ino_t) dbp->d_ino, - DT_UNKNOWN)) { - goto done; - } - size -= dbp->d_reclen; - curr_offset = (loff_t)dbp->d_off /* & 0x7fffffff */; - dbp = (xfs_dirent_t *)((char *)dbp + dbp->d_reclen); - } - } -done: - if (!error) { - if (size == 0) - filp->f_pos = uio.uio_offset & 0x7fffffff; - else if (dbp) - filp->f_pos = curr_offset; - } - - kfree(read_buf); - return -error; -} - -STATIC int -xfs_file_mmap( - struct file *filp, - struct vm_area_struct *vma) -{ - vma->vm_ops = &xfs_file_vm_ops; - vma->vm_flags |= VM_CAN_NONLINEAR; - -#ifdef CONFIG_XFS_DMAPI - if (vn_from_inode(filp->f_path.dentry->d_inode)->v_vfsp->vfs_flag & VFS_DMI) - vma->vm_ops = &xfs_dmapi_file_vm_ops; -#endif /* CONFIG_XFS_DMAPI */ - - file_accessed(filp); - return 0; -} - -STATIC long -xfs_file_ioctl( - struct file *filp, - unsigned int cmd, - unsigned long p) -{ - int error; - struct inode *inode = filp->f_path.dentry->d_inode; - bhv_vnode_t *vp = vn_from_inode(inode); - - error = bhv_vop_ioctl(vp, inode, filp, 0, cmd, (void __user *)p); - VMODIFY(vp); - - /* NOTE: some of the ioctl's return positive #'s as a - * byte count indicating success, such as - * readlink_by_handle. So we don't "sign flip" - * like most other routines. This means true - * errors need to be returned as a negative value. - */ - return error; -} - -STATIC long -xfs_file_ioctl_invis( - struct file *filp, - unsigned int cmd, - unsigned long p) -{ - int error; - struct inode *inode = filp->f_path.dentry->d_inode; - bhv_vnode_t *vp = vn_from_inode(inode); - - error = bhv_vop_ioctl(vp, inode, filp, IO_INVIS, cmd, (void __user *)p); - VMODIFY(vp); - - /* NOTE: some of the ioctl's return positive #'s as a - * byte count indicating success, such as - * readlink_by_handle. So we don't "sign flip" - * like most other routines. This means true - * errors need to be returned as a negative value. - */ - return error; -} - -#ifdef CONFIG_XFS_DMAPI -#ifdef HAVE_VMOP_MPROTECT -STATIC int -xfs_vm_mprotect( - struct vm_area_struct *vma, - unsigned int newflags) -{ - bhv_vnode_t *vp = vn_from_inode(vma->vm_file->f_path.dentry->d_inode); - int error = 0; - - if (vp->v_vfsp->vfs_flag & VFS_DMI) { - if ((vma->vm_flags & VM_MAYSHARE) && - (newflags & VM_WRITE) && !(vma->vm_flags & VM_WRITE)) { - xfs_mount_t *mp = XFS_VFSTOM(vp->v_vfsp); - - error = XFS_SEND_MMAP(mp, vma, VM_WRITE); - } - } - return error; -} -#endif /* HAVE_VMOP_MPROTECT */ -#endif /* CONFIG_XFS_DMAPI */ - -#ifdef HAVE_FOP_OPEN_EXEC -/* If the user is attempting to execute a file that is offline then - * we have to trigger a DMAPI READ event before the file is marked as busy - * otherwise the invisible I/O will not be able to write to the file to bring - * it back online. - */ -STATIC int -xfs_file_open_exec( - struct inode *inode) -{ - bhv_vnode_t *vp = vn_from_inode(inode); - - if (unlikely(vp->v_vfsp->vfs_flag & VFS_DMI)) { - xfs_mount_t *mp = XFS_VFSTOM(vp->v_vfsp); - xfs_inode_t *ip = xfs_vtoi(vp); - - if (!ip) - return -EINVAL; - if (DM_EVENT_ENABLED(vp->v_vfsp, ip, DM_EVENT_READ)) - return -XFS_SEND_DATA(mp, DM_EVENT_READ, vp, - 0, 0, 0, NULL); - } - return 0; -} -#endif /* HAVE_FOP_OPEN_EXEC */ - -/* - * mmap()d file has taken write protection fault and is being made - * writable. We can set the page state up correctly for a writable - * page, which means we can do correct delalloc accounting (ENOSPC - * checking!) and unwritten extent mapping. - */ -STATIC int -xfs_vm_page_mkwrite( - struct vm_area_struct *vma, - struct page *page) -{ - return block_page_mkwrite(vma, page, xfs_get_blocks); -} - -const struct file_operations xfs_file_operations = { - .llseek = generic_file_llseek, - .read = do_sync_read, - .write = do_sync_write, - .aio_read = xfs_file_aio_read, - .aio_write = xfs_file_aio_write, - .splice_read = xfs_file_splice_read, - .splice_write = xfs_file_splice_write, - .unlocked_ioctl = xfs_file_ioctl, -#ifdef CONFIG_COMPAT - .compat_ioctl = xfs_file_compat_ioctl, -#endif - .mmap = xfs_file_mmap, - .open = xfs_file_open, - .release = xfs_file_release, - .fsync = xfs_file_fsync, -#ifdef HAVE_FOP_OPEN_EXEC - .open_exec = xfs_file_open_exec, -#endif -}; - -const struct file_operations xfs_invis_file_operations = { - .llseek = generic_file_llseek, - .read = do_sync_read, - .write = do_sync_write, - .aio_read = xfs_file_aio_read_invis, - .aio_write = xfs_file_aio_write_invis, - .splice_read = xfs_file_splice_read_invis, - .splice_write = xfs_file_splice_write_invis, - .unlocked_ioctl = xfs_file_ioctl_invis, -#ifdef CONFIG_COMPAT - .compat_ioctl = xfs_file_compat_invis_ioctl, -#endif - .mmap = xfs_file_mmap, - .open = xfs_file_open, - .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 = { - .fault = filemap_fault, - .page_mkwrite = xfs_vm_page_mkwrite, -}; - -#ifdef CONFIG_XFS_DMAPI -static struct vm_operations_struct xfs_dmapi_file_vm_ops = { - .fault = xfs_vm_fault, - .page_mkwrite = xfs_vm_page_mkwrite, -#ifdef HAVE_VMOP_MPROTECT - .mprotect = xfs_vm_mprotect, -#endif -}; -#endif /* CONFIG_XFS_DMAPI */ |
