Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. All Rights Reserved. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify it |
| 5 | * under the terms of version 2 of the GNU General Public License as |
| 6 | * published by the Free Software Foundation. |
| 7 | * |
| 8 | * This program is distributed in the hope that it would be useful, but |
| 9 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| 11 | * |
| 12 | * Further, this software is distributed without any warranty that it is |
| 13 | * free of the rightful claim of any third person regarding infringement |
| 14 | * or the like. Any license provided herein, whether implied or |
| 15 | * otherwise, applies only to this software file. Patent licenses, if |
| 16 | * any, provided herein do not apply to combinations of this program with |
| 17 | * other software, or any other product whatsoever. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License along |
| 20 | * with this program; if not, write the Free Software Foundation, Inc., 59 |
| 21 | * Temple Place - Suite 330, Boston MA 02111-1307, USA. |
| 22 | * |
| 23 | * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, |
| 24 | * Mountain View, CA 94043, or: |
| 25 | * |
| 26 | * http://www.sgi.com |
| 27 | * |
| 28 | * For further information regarding this notice, see: |
| 29 | * |
| 30 | * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ |
| 31 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | #include "xfs.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame^] | 33 | #include "xfs_bit.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | #include "xfs_log.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame^] | 35 | #include "xfs_inum.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | #include "xfs_sb.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame^] | 37 | #include "xfs_ag.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | #include "xfs_dir.h" |
| 39 | #include "xfs_dir2.h" |
| 40 | #include "xfs_trans.h" |
| 41 | #include "xfs_dmapi.h" |
| 42 | #include "xfs_mount.h" |
| 43 | #include "xfs_bmap_btree.h" |
| 44 | #include "xfs_alloc_btree.h" |
| 45 | #include "xfs_ialloc_btree.h" |
| 46 | #include "xfs_alloc.h" |
| 47 | #include "xfs_btree.h" |
| 48 | #include "xfs_attr_sf.h" |
| 49 | #include "xfs_dir_sf.h" |
| 50 | #include "xfs_dir2_sf.h" |
| 51 | #include "xfs_dinode.h" |
| 52 | #include "xfs_inode.h" |
| 53 | #include "xfs_error.h" |
| 54 | #include "xfs_rw.h" |
| 55 | #include "xfs_ioctl32.h" |
| 56 | |
| 57 | #include <linux/dcache.h> |
| 58 | #include <linux/smp_lock.h> |
| 59 | |
| 60 | static struct vm_operations_struct linvfs_file_vm_ops; |
Dean Roehrich | 6fac0cb | 2005-06-21 14:07:45 +1000 | [diff] [blame] | 61 | #ifdef CONFIG_XFS_DMAPI |
| 62 | static struct vm_operations_struct linvfs_dmapi_file_vm_ops; |
| 63 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | |
| 65 | STATIC inline ssize_t |
| 66 | __linvfs_read( |
| 67 | struct kiocb *iocb, |
| 68 | char __user *buf, |
| 69 | int ioflags, |
| 70 | size_t count, |
| 71 | loff_t pos) |
| 72 | { |
| 73 | struct iovec iov = {buf, count}; |
| 74 | struct file *file = iocb->ki_filp; |
| 75 | vnode_t *vp = LINVFS_GET_VP(file->f_dentry->d_inode); |
| 76 | ssize_t rval; |
| 77 | |
| 78 | BUG_ON(iocb->ki_pos != pos); |
| 79 | |
| 80 | if (unlikely(file->f_flags & O_DIRECT)) |
| 81 | ioflags |= IO_ISDIRECT; |
| 82 | VOP_READ(vp, iocb, &iov, 1, &iocb->ki_pos, ioflags, NULL, rval); |
| 83 | return rval; |
| 84 | } |
| 85 | |
| 86 | |
| 87 | STATIC ssize_t |
| 88 | linvfs_aio_read( |
| 89 | struct kiocb *iocb, |
| 90 | char __user *buf, |
| 91 | size_t count, |
| 92 | loff_t pos) |
| 93 | { |
| 94 | return __linvfs_read(iocb, buf, IO_ISAIO, count, pos); |
| 95 | } |
| 96 | |
| 97 | STATIC ssize_t |
| 98 | linvfs_aio_read_invis( |
| 99 | struct kiocb *iocb, |
| 100 | char __user *buf, |
| 101 | size_t count, |
| 102 | loff_t pos) |
| 103 | { |
| 104 | return __linvfs_read(iocb, buf, IO_ISAIO|IO_INVIS, count, pos); |
| 105 | } |
| 106 | |
| 107 | |
| 108 | STATIC inline ssize_t |
| 109 | __linvfs_write( |
| 110 | struct kiocb *iocb, |
| 111 | const char __user *buf, |
| 112 | int ioflags, |
| 113 | size_t count, |
| 114 | loff_t pos) |
| 115 | { |
| 116 | struct iovec iov = {(void __user *)buf, count}; |
| 117 | struct file *file = iocb->ki_filp; |
| 118 | struct inode *inode = file->f_mapping->host; |
| 119 | vnode_t *vp = LINVFS_GET_VP(inode); |
| 120 | ssize_t rval; |
| 121 | |
| 122 | BUG_ON(iocb->ki_pos != pos); |
| 123 | if (unlikely(file->f_flags & O_DIRECT)) |
| 124 | ioflags |= IO_ISDIRECT; |
| 125 | |
| 126 | VOP_WRITE(vp, iocb, &iov, 1, &iocb->ki_pos, ioflags, NULL, rval); |
| 127 | return rval; |
| 128 | } |
| 129 | |
| 130 | |
| 131 | STATIC ssize_t |
| 132 | linvfs_aio_write( |
| 133 | struct kiocb *iocb, |
| 134 | const char __user *buf, |
| 135 | size_t count, |
| 136 | loff_t pos) |
| 137 | { |
| 138 | return __linvfs_write(iocb, buf, IO_ISAIO, count, pos); |
| 139 | } |
| 140 | |
| 141 | STATIC ssize_t |
| 142 | linvfs_aio_write_invis( |
| 143 | struct kiocb *iocb, |
| 144 | const char __user *buf, |
| 145 | size_t count, |
| 146 | loff_t pos) |
| 147 | { |
| 148 | return __linvfs_write(iocb, buf, IO_ISAIO|IO_INVIS, count, pos); |
| 149 | } |
| 150 | |
| 151 | |
| 152 | STATIC inline ssize_t |
| 153 | __linvfs_readv( |
| 154 | struct file *file, |
| 155 | const struct iovec *iov, |
| 156 | int ioflags, |
| 157 | unsigned long nr_segs, |
| 158 | loff_t *ppos) |
| 159 | { |
| 160 | struct inode *inode = file->f_mapping->host; |
| 161 | vnode_t *vp = LINVFS_GET_VP(inode); |
| 162 | struct kiocb kiocb; |
| 163 | ssize_t rval; |
| 164 | |
| 165 | init_sync_kiocb(&kiocb, file); |
| 166 | kiocb.ki_pos = *ppos; |
| 167 | |
| 168 | if (unlikely(file->f_flags & O_DIRECT)) |
| 169 | ioflags |= IO_ISDIRECT; |
| 170 | VOP_READ(vp, &kiocb, iov, nr_segs, &kiocb.ki_pos, ioflags, NULL, rval); |
| 171 | |
| 172 | *ppos = kiocb.ki_pos; |
| 173 | return rval; |
| 174 | } |
| 175 | |
| 176 | STATIC ssize_t |
| 177 | linvfs_readv( |
| 178 | struct file *file, |
| 179 | const struct iovec *iov, |
| 180 | unsigned long nr_segs, |
| 181 | loff_t *ppos) |
| 182 | { |
| 183 | return __linvfs_readv(file, iov, 0, nr_segs, ppos); |
| 184 | } |
| 185 | |
| 186 | STATIC ssize_t |
| 187 | linvfs_readv_invis( |
| 188 | struct file *file, |
| 189 | const struct iovec *iov, |
| 190 | unsigned long nr_segs, |
| 191 | loff_t *ppos) |
| 192 | { |
| 193 | return __linvfs_readv(file, iov, IO_INVIS, nr_segs, ppos); |
| 194 | } |
| 195 | |
| 196 | |
| 197 | STATIC inline ssize_t |
| 198 | __linvfs_writev( |
| 199 | struct file *file, |
| 200 | const struct iovec *iov, |
| 201 | int ioflags, |
| 202 | unsigned long nr_segs, |
| 203 | loff_t *ppos) |
| 204 | { |
| 205 | struct inode *inode = file->f_mapping->host; |
| 206 | vnode_t *vp = LINVFS_GET_VP(inode); |
| 207 | struct kiocb kiocb; |
| 208 | ssize_t rval; |
| 209 | |
| 210 | init_sync_kiocb(&kiocb, file); |
| 211 | kiocb.ki_pos = *ppos; |
| 212 | if (unlikely(file->f_flags & O_DIRECT)) |
| 213 | ioflags |= IO_ISDIRECT; |
| 214 | |
| 215 | VOP_WRITE(vp, &kiocb, iov, nr_segs, &kiocb.ki_pos, ioflags, NULL, rval); |
| 216 | |
| 217 | *ppos = kiocb.ki_pos; |
| 218 | return rval; |
| 219 | } |
| 220 | |
| 221 | |
| 222 | STATIC ssize_t |
| 223 | linvfs_writev( |
| 224 | struct file *file, |
| 225 | const struct iovec *iov, |
| 226 | unsigned long nr_segs, |
| 227 | loff_t *ppos) |
| 228 | { |
| 229 | return __linvfs_writev(file, iov, 0, nr_segs, ppos); |
| 230 | } |
| 231 | |
| 232 | STATIC ssize_t |
| 233 | linvfs_writev_invis( |
| 234 | struct file *file, |
| 235 | const struct iovec *iov, |
| 236 | unsigned long nr_segs, |
| 237 | loff_t *ppos) |
| 238 | { |
| 239 | return __linvfs_writev(file, iov, IO_INVIS, nr_segs, ppos); |
| 240 | } |
| 241 | |
| 242 | STATIC ssize_t |
| 243 | linvfs_sendfile( |
| 244 | struct file *filp, |
| 245 | loff_t *ppos, |
| 246 | size_t count, |
| 247 | read_actor_t actor, |
| 248 | void *target) |
| 249 | { |
| 250 | vnode_t *vp = LINVFS_GET_VP(filp->f_dentry->d_inode); |
| 251 | ssize_t rval; |
| 252 | |
| 253 | VOP_SENDFILE(vp, filp, ppos, 0, count, actor, target, NULL, rval); |
| 254 | return rval; |
| 255 | } |
| 256 | |
| 257 | |
| 258 | STATIC int |
| 259 | linvfs_open( |
| 260 | struct inode *inode, |
| 261 | struct file *filp) |
| 262 | { |
| 263 | vnode_t *vp = LINVFS_GET_VP(inode); |
| 264 | int error; |
| 265 | |
| 266 | if (!(filp->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS) |
| 267 | return -EFBIG; |
| 268 | |
| 269 | ASSERT(vp); |
| 270 | VOP_OPEN(vp, NULL, error); |
| 271 | return -error; |
| 272 | } |
| 273 | |
| 274 | |
| 275 | STATIC int |
| 276 | linvfs_release( |
| 277 | struct inode *inode, |
| 278 | struct file *filp) |
| 279 | { |
| 280 | vnode_t *vp = LINVFS_GET_VP(inode); |
| 281 | int error = 0; |
| 282 | |
| 283 | if (vp) |
| 284 | VOP_RELEASE(vp, error); |
| 285 | return -error; |
| 286 | } |
| 287 | |
| 288 | |
| 289 | STATIC int |
| 290 | linvfs_fsync( |
| 291 | struct file *filp, |
| 292 | struct dentry *dentry, |
| 293 | int datasync) |
| 294 | { |
| 295 | struct inode *inode = dentry->d_inode; |
| 296 | vnode_t *vp = LINVFS_GET_VP(inode); |
| 297 | int error; |
| 298 | int flags = FSYNC_WAIT; |
| 299 | |
| 300 | if (datasync) |
| 301 | flags |= FSYNC_DATA; |
| 302 | |
| 303 | ASSERT(vp); |
| 304 | VOP_FSYNC(vp, flags, NULL, (xfs_off_t)0, (xfs_off_t)-1, error); |
| 305 | return -error; |
| 306 | } |
| 307 | |
| 308 | /* |
| 309 | * linvfs_readdir maps to VOP_READDIR(). |
| 310 | * We need to build a uio, cred, ... |
| 311 | */ |
| 312 | |
| 313 | #define nextdp(dp) ((struct xfs_dirent *)((char *)(dp) + (dp)->d_reclen)) |
| 314 | |
Dean Roehrich | bb3f724 | 2005-09-02 15:43:05 +1000 | [diff] [blame] | 315 | #ifdef CONFIG_XFS_DMAPI |
| 316 | |
| 317 | STATIC struct page * |
| 318 | linvfs_filemap_nopage( |
| 319 | struct vm_area_struct *area, |
| 320 | unsigned long address, |
| 321 | int *type) |
| 322 | { |
| 323 | struct inode *inode = area->vm_file->f_dentry->d_inode; |
| 324 | vnode_t *vp = LINVFS_GET_VP(inode); |
| 325 | xfs_mount_t *mp = XFS_VFSTOM(vp->v_vfsp); |
| 326 | int error; |
| 327 | |
| 328 | ASSERT_ALWAYS(vp->v_vfsp->vfs_flag & VFS_DMI); |
| 329 | |
| 330 | error = XFS_SEND_MMAP(mp, area, 0); |
| 331 | if (error) |
| 332 | return NULL; |
| 333 | |
| 334 | return filemap_nopage(area, address, type); |
| 335 | } |
| 336 | |
| 337 | #endif /* CONFIG_XFS_DMAPI */ |
| 338 | |
| 339 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | STATIC int |
| 341 | linvfs_readdir( |
| 342 | struct file *filp, |
| 343 | void *dirent, |
| 344 | filldir_t filldir) |
| 345 | { |
| 346 | int error = 0; |
| 347 | vnode_t *vp; |
| 348 | uio_t uio; |
| 349 | iovec_t iov; |
| 350 | int eof = 0; |
| 351 | caddr_t read_buf; |
| 352 | int namelen, size = 0; |
| 353 | size_t rlen = PAGE_CACHE_SIZE; |
| 354 | xfs_off_t start_offset, curr_offset; |
| 355 | xfs_dirent_t *dbp = NULL; |
| 356 | |
| 357 | vp = LINVFS_GET_VP(filp->f_dentry->d_inode); |
| 358 | ASSERT(vp); |
| 359 | |
| 360 | /* Try fairly hard to get memory */ |
| 361 | do { |
| 362 | if ((read_buf = (caddr_t)kmalloc(rlen, GFP_KERNEL))) |
| 363 | break; |
| 364 | rlen >>= 1; |
| 365 | } while (rlen >= 1024); |
| 366 | |
| 367 | if (read_buf == NULL) |
| 368 | return -ENOMEM; |
| 369 | |
| 370 | uio.uio_iov = &iov; |
| 371 | uio.uio_segflg = UIO_SYSSPACE; |
| 372 | curr_offset = filp->f_pos; |
| 373 | if (filp->f_pos != 0x7fffffff) |
| 374 | uio.uio_offset = filp->f_pos; |
| 375 | else |
| 376 | uio.uio_offset = 0xffffffff; |
| 377 | |
| 378 | while (!eof) { |
| 379 | uio.uio_resid = iov.iov_len = rlen; |
| 380 | iov.iov_base = read_buf; |
| 381 | uio.uio_iovcnt = 1; |
| 382 | |
| 383 | start_offset = uio.uio_offset; |
| 384 | |
| 385 | VOP_READDIR(vp, &uio, NULL, &eof, error); |
| 386 | if ((uio.uio_offset == start_offset) || error) { |
| 387 | size = 0; |
| 388 | break; |
| 389 | } |
| 390 | |
| 391 | size = rlen - uio.uio_resid; |
| 392 | dbp = (xfs_dirent_t *)read_buf; |
| 393 | while (size > 0) { |
| 394 | namelen = strlen(dbp->d_name); |
| 395 | |
| 396 | if (filldir(dirent, dbp->d_name, namelen, |
| 397 | (loff_t) curr_offset & 0x7fffffff, |
| 398 | (ino_t) dbp->d_ino, |
| 399 | DT_UNKNOWN)) { |
| 400 | goto done; |
| 401 | } |
| 402 | size -= dbp->d_reclen; |
| 403 | curr_offset = (loff_t)dbp->d_off /* & 0x7fffffff */; |
| 404 | dbp = nextdp(dbp); |
| 405 | } |
| 406 | } |
| 407 | done: |
| 408 | if (!error) { |
| 409 | if (size == 0) |
| 410 | filp->f_pos = uio.uio_offset & 0x7fffffff; |
| 411 | else if (dbp) |
| 412 | filp->f_pos = curr_offset; |
| 413 | } |
| 414 | |
| 415 | kfree(read_buf); |
| 416 | return -error; |
| 417 | } |
| 418 | |
| 419 | |
| 420 | STATIC int |
| 421 | linvfs_file_mmap( |
| 422 | struct file *filp, |
| 423 | struct vm_area_struct *vma) |
| 424 | { |
| 425 | struct inode *ip = filp->f_dentry->d_inode; |
| 426 | vnode_t *vp = LINVFS_GET_VP(ip); |
| 427 | vattr_t va = { .va_mask = XFS_AT_UPDATIME }; |
| 428 | int error; |
| 429 | |
Dean Roehrich | 6fac0cb | 2005-06-21 14:07:45 +1000 | [diff] [blame] | 430 | vma->vm_ops = &linvfs_file_vm_ops; |
| 431 | |
Dean Roehrich | 6fac0cb | 2005-06-21 14:07:45 +1000 | [diff] [blame] | 432 | #ifdef CONFIG_XFS_DMAPI |
Dean Roehrich | bb3f724 | 2005-09-02 15:43:05 +1000 | [diff] [blame] | 433 | if (vp->v_vfsp->vfs_flag & VFS_DMI) { |
Dean Roehrich | 6fac0cb | 2005-06-21 14:07:45 +1000 | [diff] [blame] | 434 | vma->vm_ops = &linvfs_dmapi_file_vm_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | } |
Dean Roehrich | bb3f724 | 2005-09-02 15:43:05 +1000 | [diff] [blame] | 436 | #endif /* CONFIG_XFS_DMAPI */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | VOP_SETATTR(vp, &va, XFS_AT_UPDATIME, NULL, error); |
| 439 | if (!error) |
| 440 | vn_revalidate(vp); /* update Linux inode flags */ |
| 441 | return 0; |
| 442 | } |
| 443 | |
| 444 | |
| 445 | STATIC long |
| 446 | linvfs_ioctl( |
| 447 | struct file *filp, |
| 448 | unsigned int cmd, |
| 449 | unsigned long arg) |
| 450 | { |
| 451 | int error; |
| 452 | struct inode *inode = filp->f_dentry->d_inode; |
| 453 | vnode_t *vp = LINVFS_GET_VP(inode); |
| 454 | |
| 455 | VOP_IOCTL(vp, inode, filp, 0, cmd, (void __user *)arg, error); |
| 456 | VMODIFY(vp); |
| 457 | |
| 458 | /* NOTE: some of the ioctl's return positive #'s as a |
| 459 | * byte count indicating success, such as |
| 460 | * readlink_by_handle. So we don't "sign flip" |
| 461 | * like most other routines. This means true |
| 462 | * errors need to be returned as a negative value. |
| 463 | */ |
| 464 | return error; |
| 465 | } |
| 466 | |
| 467 | STATIC long |
| 468 | linvfs_ioctl_invis( |
| 469 | struct file *filp, |
| 470 | unsigned int cmd, |
| 471 | unsigned long arg) |
| 472 | { |
| 473 | int error; |
| 474 | struct inode *inode = filp->f_dentry->d_inode; |
| 475 | vnode_t *vp = LINVFS_GET_VP(inode); |
| 476 | |
| 477 | ASSERT(vp); |
| 478 | VOP_IOCTL(vp, inode, filp, IO_INVIS, cmd, (void __user *)arg, error); |
| 479 | VMODIFY(vp); |
| 480 | |
| 481 | /* NOTE: some of the ioctl's return positive #'s as a |
| 482 | * byte count indicating success, such as |
| 483 | * readlink_by_handle. So we don't "sign flip" |
| 484 | * like most other routines. This means true |
| 485 | * errors need to be returned as a negative value. |
| 486 | */ |
| 487 | return error; |
| 488 | } |
| 489 | |
Dean Roehrich | bb3f724 | 2005-09-02 15:43:05 +1000 | [diff] [blame] | 490 | #ifdef CONFIG_XFS_DMAPI |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | #ifdef HAVE_VMOP_MPROTECT |
| 492 | STATIC int |
| 493 | linvfs_mprotect( |
| 494 | struct vm_area_struct *vma, |
| 495 | unsigned int newflags) |
| 496 | { |
| 497 | vnode_t *vp = LINVFS_GET_VP(vma->vm_file->f_dentry->d_inode); |
| 498 | int error = 0; |
| 499 | |
| 500 | if (vp->v_vfsp->vfs_flag & VFS_DMI) { |
| 501 | if ((vma->vm_flags & VM_MAYSHARE) && |
| 502 | (newflags & VM_WRITE) && !(vma->vm_flags & VM_WRITE)) { |
| 503 | xfs_mount_t *mp = XFS_VFSTOM(vp->v_vfsp); |
| 504 | |
| 505 | error = XFS_SEND_MMAP(mp, vma, VM_WRITE); |
| 506 | } |
| 507 | } |
| 508 | return error; |
| 509 | } |
| 510 | #endif /* HAVE_VMOP_MPROTECT */ |
Dean Roehrich | bb3f724 | 2005-09-02 15:43:05 +1000 | [diff] [blame] | 511 | #endif /* CONFIG_XFS_DMAPI */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | |
| 513 | #ifdef HAVE_FOP_OPEN_EXEC |
| 514 | /* If the user is attempting to execute a file that is offline then |
| 515 | * we have to trigger a DMAPI READ event before the file is marked as busy |
| 516 | * otherwise the invisible I/O will not be able to write to the file to bring |
| 517 | * it back online. |
| 518 | */ |
| 519 | STATIC int |
| 520 | linvfs_open_exec( |
| 521 | struct inode *inode) |
| 522 | { |
| 523 | vnode_t *vp = LINVFS_GET_VP(inode); |
| 524 | xfs_mount_t *mp = XFS_VFSTOM(vp->v_vfsp); |
| 525 | int error = 0; |
| 526 | bhv_desc_t *bdp; |
| 527 | xfs_inode_t *ip; |
| 528 | |
| 529 | if (vp->v_vfsp->vfs_flag & VFS_DMI) { |
| 530 | bdp = vn_bhv_lookup(VN_BHV_HEAD(vp), &xfs_vnodeops); |
| 531 | if (!bdp) { |
| 532 | error = -EINVAL; |
| 533 | goto open_exec_out; |
| 534 | } |
| 535 | ip = XFS_BHVTOI(bdp); |
| 536 | if (DM_EVENT_ENABLED(vp->v_vfsp, ip, DM_EVENT_READ)) { |
| 537 | error = -XFS_SEND_DATA(mp, DM_EVENT_READ, vp, |
| 538 | 0, 0, 0, NULL); |
| 539 | } |
| 540 | } |
| 541 | open_exec_out: |
| 542 | return error; |
| 543 | } |
| 544 | #endif /* HAVE_FOP_OPEN_EXEC */ |
| 545 | |
| 546 | struct file_operations linvfs_file_operations = { |
| 547 | .llseek = generic_file_llseek, |
| 548 | .read = do_sync_read, |
Dean Roehrich | bb3f724 | 2005-09-02 15:43:05 +1000 | [diff] [blame] | 549 | .write = do_sync_write, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 550 | .readv = linvfs_readv, |
| 551 | .writev = linvfs_writev, |
| 552 | .aio_read = linvfs_aio_read, |
| 553 | .aio_write = linvfs_aio_write, |
| 554 | .sendfile = linvfs_sendfile, |
| 555 | .unlocked_ioctl = linvfs_ioctl, |
| 556 | #ifdef CONFIG_COMPAT |
Nathan Scott | d387039 | 2005-05-06 06:44:46 -0700 | [diff] [blame] | 557 | .compat_ioctl = linvfs_compat_ioctl, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | #endif |
| 559 | .mmap = linvfs_file_mmap, |
| 560 | .open = linvfs_open, |
| 561 | .release = linvfs_release, |
| 562 | .fsync = linvfs_fsync, |
| 563 | #ifdef HAVE_FOP_OPEN_EXEC |
| 564 | .open_exec = linvfs_open_exec, |
| 565 | #endif |
| 566 | }; |
| 567 | |
| 568 | struct file_operations linvfs_invis_file_operations = { |
| 569 | .llseek = generic_file_llseek, |
| 570 | .read = do_sync_read, |
Dean Roehrich | bb3f724 | 2005-09-02 15:43:05 +1000 | [diff] [blame] | 571 | .write = do_sync_write, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | .readv = linvfs_readv_invis, |
| 573 | .writev = linvfs_writev_invis, |
| 574 | .aio_read = linvfs_aio_read_invis, |
| 575 | .aio_write = linvfs_aio_write_invis, |
| 576 | .sendfile = linvfs_sendfile, |
| 577 | .unlocked_ioctl = linvfs_ioctl_invis, |
| 578 | #ifdef CONFIG_COMPAT |
Nathan Scott | d387039 | 2005-05-06 06:44:46 -0700 | [diff] [blame] | 579 | .compat_ioctl = linvfs_compat_invis_ioctl, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 580 | #endif |
| 581 | .mmap = linvfs_file_mmap, |
| 582 | .open = linvfs_open, |
| 583 | .release = linvfs_release, |
| 584 | .fsync = linvfs_fsync, |
| 585 | }; |
| 586 | |
| 587 | |
| 588 | struct file_operations linvfs_dir_operations = { |
| 589 | .read = generic_read_dir, |
| 590 | .readdir = linvfs_readdir, |
| 591 | .unlocked_ioctl = linvfs_ioctl, |
Nathan Scott | d387039 | 2005-05-06 06:44:46 -0700 | [diff] [blame] | 592 | #ifdef CONFIG_COMPAT |
| 593 | .compat_ioctl = linvfs_compat_ioctl, |
| 594 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 595 | .fsync = linvfs_fsync, |
| 596 | }; |
| 597 | |
| 598 | static struct vm_operations_struct linvfs_file_vm_ops = { |
| 599 | .nopage = filemap_nopage, |
| 600 | .populate = filemap_populate, |
Dean Roehrich | 6fac0cb | 2005-06-21 14:07:45 +1000 | [diff] [blame] | 601 | }; |
| 602 | |
| 603 | #ifdef CONFIG_XFS_DMAPI |
| 604 | static struct vm_operations_struct linvfs_dmapi_file_vm_ops = { |
Dean Roehrich | bb3f724 | 2005-09-02 15:43:05 +1000 | [diff] [blame] | 605 | .nopage = linvfs_filemap_nopage, |
Dean Roehrich | 6fac0cb | 2005-06-21 14:07:45 +1000 | [diff] [blame] | 606 | .populate = filemap_populate, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 607 | #ifdef HAVE_VMOP_MPROTECT |
| 608 | .mprotect = linvfs_mprotect, |
| 609 | #endif |
| 610 | }; |
Dean Roehrich | 6fac0cb | 2005-06-21 14:07:45 +1000 | [diff] [blame] | 611 | #endif /* CONFIG_XFS_DMAPI */ |