2 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
25 #include "xfs_trans.h"
26 #include "xfs_dmapi.h"
27 #include "xfs_mount.h"
28 #include "xfs_bmap_btree.h"
29 #include "xfs_alloc_btree.h"
30 #include "xfs_ialloc_btree.h"
31 #include "xfs_alloc.h"
32 #include "xfs_btree.h"
33 #include "xfs_attr_sf.h"
34 #include "xfs_dir2_sf.h"
35 #include "xfs_dinode.h"
36 #include "xfs_inode.h"
37 #include "xfs_error.h"
39 #include "xfs_ioctl32.h"
41 #include <linux/dcache.h>
42 #include <linux/smp_lock.h>
44 static struct vm_operations_struct xfs_file_vm_ops
;
45 #ifdef CONFIG_XFS_DMAPI
46 static struct vm_operations_struct xfs_dmapi_file_vm_ops
;
52 const struct iovec
*iov
,
53 unsigned long nr_segs
,
57 struct file
*file
= iocb
->ki_filp
;
58 bhv_vnode_t
*vp
= vn_from_inode(file
->f_path
.dentry
->d_inode
);
60 BUG_ON(iocb
->ki_pos
!= pos
);
61 if (unlikely(file
->f_flags
& O_DIRECT
))
62 ioflags
|= IO_ISDIRECT
;
63 return bhv_vop_read(vp
, iocb
, iov
, nr_segs
, &iocb
->ki_pos
,
70 const struct iovec
*iov
,
71 unsigned long nr_segs
,
74 return __xfs_file_read(iocb
, iov
, nr_segs
, IO_ISAIO
, pos
);
78 xfs_file_aio_read_invis(
80 const struct iovec
*iov
,
81 unsigned long nr_segs
,
84 return __xfs_file_read(iocb
, iov
, nr_segs
, IO_ISAIO
|IO_INVIS
, pos
);
90 const struct iovec
*iov
,
91 unsigned long nr_segs
,
95 struct file
*file
= iocb
->ki_filp
;
96 struct inode
*inode
= file
->f_mapping
->host
;
97 bhv_vnode_t
*vp
= vn_from_inode(inode
);
99 BUG_ON(iocb
->ki_pos
!= pos
);
100 if (unlikely(file
->f_flags
& O_DIRECT
))
101 ioflags
|= IO_ISDIRECT
;
102 return bhv_vop_write(vp
, iocb
, iov
, nr_segs
, &iocb
->ki_pos
,
109 const struct iovec
*iov
,
110 unsigned long nr_segs
,
113 return __xfs_file_write(iocb
, iov
, nr_segs
, IO_ISAIO
, pos
);
117 xfs_file_aio_write_invis(
119 const struct iovec
*iov
,
120 unsigned long nr_segs
,
123 return __xfs_file_write(iocb
, iov
, nr_segs
, IO_ISAIO
|IO_INVIS
, pos
);
134 return bhv_vop_sendfile(vn_from_inode(filp
->f_path
.dentry
->d_inode
),
135 filp
, pos
, 0, count
, actor
, target
, NULL
);
139 xfs_file_sendfile_invis(
146 return bhv_vop_sendfile(vn_from_inode(filp
->f_path
.dentry
->d_inode
),
147 filp
, pos
, IO_INVIS
, count
, actor
, target
, NULL
);
151 xfs_file_splice_read(
154 struct pipe_inode_info
*pipe
,
158 return bhv_vop_splice_read(vn_from_inode(infilp
->f_path
.dentry
->d_inode
),
159 infilp
, ppos
, pipe
, len
, flags
, 0, NULL
);
163 xfs_file_splice_read_invis(
166 struct pipe_inode_info
*pipe
,
170 return bhv_vop_splice_read(vn_from_inode(infilp
->f_path
.dentry
->d_inode
),
171 infilp
, ppos
, pipe
, len
, flags
, IO_INVIS
,
176 xfs_file_splice_write(
177 struct pipe_inode_info
*pipe
,
178 struct file
*outfilp
,
183 return bhv_vop_splice_write(vn_from_inode(outfilp
->f_path
.dentry
->d_inode
),
184 pipe
, outfilp
, ppos
, len
, flags
, 0, NULL
);
188 xfs_file_splice_write_invis(
189 struct pipe_inode_info
*pipe
,
190 struct file
*outfilp
,
195 return bhv_vop_splice_write(vn_from_inode(outfilp
->f_path
.dentry
->d_inode
),
196 pipe
, outfilp
, ppos
, len
, flags
, IO_INVIS
,
205 if (!(filp
->f_flags
& O_LARGEFILE
) && i_size_read(inode
) > MAX_NON_LFS
)
207 return -bhv_vop_open(vn_from_inode(inode
), NULL
);
215 return -bhv_vop_close(vn_from_inode(filp
->f_path
.dentry
->d_inode
), 0,
216 file_count(filp
) > 1 ? L_FALSE
: L_TRUE
, NULL
);
224 bhv_vnode_t
*vp
= vn_from_inode(inode
);
227 return -bhv_vop_release(vp
);
234 struct dentry
*dentry
,
237 bhv_vnode_t
*vp
= vn_from_inode(dentry
->d_inode
);
238 int flags
= FSYNC_WAIT
;
244 return -bhv_vop_fsync(vp
, flags
, NULL
, (xfs_off_t
)0, (xfs_off_t
)-1);
247 #ifdef CONFIG_XFS_DMAPI
250 struct vm_area_struct
*area
,
251 unsigned long address
,
254 struct inode
*inode
= area
->vm_file
->f_path
.dentry
->d_inode
;
255 bhv_vnode_t
*vp
= vn_from_inode(inode
);
257 ASSERT_ALWAYS(vp
->v_vfsp
->vfs_flag
& VFS_DMI
);
258 if (XFS_SEND_MMAP(XFS_VFSTOM(vp
->v_vfsp
), area
, 0))
260 return filemap_nopage(area
, address
, type
);
262 #endif /* CONFIG_XFS_DMAPI */
271 bhv_vnode_t
*vp
= vn_from_inode(filp
->f_path
.dentry
->d_inode
);
276 int namelen
, size
= 0;
277 size_t rlen
= PAGE_CACHE_SIZE
;
278 xfs_off_t start_offset
, curr_offset
;
279 xfs_dirent_t
*dbp
= NULL
;
281 /* Try fairly hard to get memory */
283 if ((read_buf
= kmalloc(rlen
, GFP_KERNEL
)))
286 } while (rlen
>= 1024);
288 if (read_buf
== NULL
)
292 uio
.uio_segflg
= UIO_SYSSPACE
;
293 curr_offset
= filp
->f_pos
;
294 if (filp
->f_pos
!= 0x7fffffff)
295 uio
.uio_offset
= filp
->f_pos
;
297 uio
.uio_offset
= 0xffffffff;
300 uio
.uio_resid
= iov
.iov_len
= rlen
;
301 iov
.iov_base
= read_buf
;
304 start_offset
= uio
.uio_offset
;
306 error
= bhv_vop_readdir(vp
, &uio
, NULL
, &eof
);
307 if ((uio
.uio_offset
== start_offset
) || error
) {
312 size
= rlen
- uio
.uio_resid
;
313 dbp
= (xfs_dirent_t
*)read_buf
;
315 namelen
= strlen(dbp
->d_name
);
317 if (filldir(dirent
, dbp
->d_name
, namelen
,
318 (loff_t
) curr_offset
& 0x7fffffff,
323 size
-= dbp
->d_reclen
;
324 curr_offset
= (loff_t
)dbp
->d_off
/* & 0x7fffffff */;
325 dbp
= (xfs_dirent_t
*)((char *)dbp
+ dbp
->d_reclen
);
331 filp
->f_pos
= uio
.uio_offset
& 0x7fffffff;
333 filp
->f_pos
= curr_offset
;
343 struct vm_area_struct
*vma
)
345 vma
->vm_ops
= &xfs_file_vm_ops
;
347 #ifdef CONFIG_XFS_DMAPI
348 if (vn_from_inode(filp
->f_path
.dentry
->d_inode
)->v_vfsp
->vfs_flag
& VFS_DMI
)
349 vma
->vm_ops
= &xfs_dmapi_file_vm_ops
;
350 #endif /* CONFIG_XFS_DMAPI */
363 struct inode
*inode
= filp
->f_path
.dentry
->d_inode
;
364 bhv_vnode_t
*vp
= vn_from_inode(inode
);
366 error
= bhv_vop_ioctl(vp
, inode
, filp
, 0, cmd
, (void __user
*)p
);
369 /* NOTE: some of the ioctl's return positive #'s as a
370 * byte count indicating success, such as
371 * readlink_by_handle. So we don't "sign flip"
372 * like most other routines. This means true
373 * errors need to be returned as a negative value.
379 xfs_file_ioctl_invis(
385 struct inode
*inode
= filp
->f_path
.dentry
->d_inode
;
386 bhv_vnode_t
*vp
= vn_from_inode(inode
);
388 error
= bhv_vop_ioctl(vp
, inode
, filp
, IO_INVIS
, cmd
, (void __user
*)p
);
391 /* NOTE: some of the ioctl's return positive #'s as a
392 * byte count indicating success, such as
393 * readlink_by_handle. So we don't "sign flip"
394 * like most other routines. This means true
395 * errors need to be returned as a negative value.
400 #ifdef CONFIG_XFS_DMAPI
401 #ifdef HAVE_VMOP_MPROTECT
404 struct vm_area_struct
*vma
,
405 unsigned int newflags
)
407 bhv_vnode_t
*vp
= vn_from_inode(vma
->vm_file
->f_path
.dentry
->d_inode
);
410 if (vp
->v_vfsp
->vfs_flag
& VFS_DMI
) {
411 if ((vma
->vm_flags
& VM_MAYSHARE
) &&
412 (newflags
& VM_WRITE
) && !(vma
->vm_flags
& VM_WRITE
)) {
413 xfs_mount_t
*mp
= XFS_VFSTOM(vp
->v_vfsp
);
415 error
= XFS_SEND_MMAP(mp
, vma
, VM_WRITE
);
420 #endif /* HAVE_VMOP_MPROTECT */
421 #endif /* CONFIG_XFS_DMAPI */
423 #ifdef HAVE_FOP_OPEN_EXEC
424 /* If the user is attempting to execute a file that is offline then
425 * we have to trigger a DMAPI READ event before the file is marked as busy
426 * otherwise the invisible I/O will not be able to write to the file to bring
433 bhv_vnode_t
*vp
= vn_from_inode(inode
);
435 if (unlikely(vp
->v_vfsp
->vfs_flag
& VFS_DMI
)) {
436 xfs_mount_t
*mp
= XFS_VFSTOM(vp
->v_vfsp
);
437 xfs_inode_t
*ip
= xfs_vtoi(vp
);
441 if (DM_EVENT_ENABLED(vp
->v_vfsp
, ip
, DM_EVENT_READ
))
442 return -XFS_SEND_DATA(mp
, DM_EVENT_READ
, vp
,
447 #endif /* HAVE_FOP_OPEN_EXEC */
449 const struct file_operations xfs_file_operations
= {
450 .llseek
= generic_file_llseek
,
451 .read
= do_sync_read
,
452 .write
= do_sync_write
,
453 .aio_read
= xfs_file_aio_read
,
454 .aio_write
= xfs_file_aio_write
,
455 .sendfile
= xfs_file_sendfile
,
456 .splice_read
= xfs_file_splice_read
,
457 .splice_write
= xfs_file_splice_write
,
458 .unlocked_ioctl
= xfs_file_ioctl
,
460 .compat_ioctl
= xfs_file_compat_ioctl
,
462 .mmap
= xfs_file_mmap
,
463 .open
= xfs_file_open
,
464 .flush
= xfs_file_close
,
465 .release
= xfs_file_release
,
466 .fsync
= xfs_file_fsync
,
467 #ifdef HAVE_FOP_OPEN_EXEC
468 .open_exec
= xfs_file_open_exec
,
472 const struct file_operations xfs_invis_file_operations
= {
473 .llseek
= generic_file_llseek
,
474 .read
= do_sync_read
,
475 .write
= do_sync_write
,
476 .aio_read
= xfs_file_aio_read_invis
,
477 .aio_write
= xfs_file_aio_write_invis
,
478 .sendfile
= xfs_file_sendfile_invis
,
479 .splice_read
= xfs_file_splice_read_invis
,
480 .splice_write
= xfs_file_splice_write_invis
,
481 .unlocked_ioctl
= xfs_file_ioctl_invis
,
483 .compat_ioctl
= xfs_file_compat_invis_ioctl
,
485 .mmap
= xfs_file_mmap
,
486 .open
= xfs_file_open
,
487 .flush
= xfs_file_close
,
488 .release
= xfs_file_release
,
489 .fsync
= xfs_file_fsync
,
493 const struct file_operations xfs_dir_file_operations
= {
494 .read
= generic_read_dir
,
495 .readdir
= xfs_file_readdir
,
496 .unlocked_ioctl
= xfs_file_ioctl
,
498 .compat_ioctl
= xfs_file_compat_ioctl
,
500 .fsync
= xfs_file_fsync
,
503 static struct vm_operations_struct xfs_file_vm_ops
= {
504 .nopage
= filemap_nopage
,
505 .populate
= filemap_populate
,
508 #ifdef CONFIG_XFS_DMAPI
509 static struct vm_operations_struct xfs_dmapi_file_vm_ops
= {
510 .nopage
= xfs_vm_nopage
,
511 .populate
= filemap_populate
,
512 #ifdef HAVE_VMOP_MPROTECT
513 .mprotect
= xfs_vm_mprotect
,
516 #endif /* CONFIG_XFS_DMAPI */