diff options
Diffstat (limited to 'fs/exportfs')
-rw-r--r-- | fs/exportfs/expfs.c | 56 |
1 files changed, 3 insertions, 53 deletions
diff --git a/fs/exportfs/expfs.c b/fs/exportfs/expfs.c index 16287af34859..dd132bb7b8f8 100644 --- a/fs/exportfs/expfs.c +++ b/fs/exportfs/expfs.c | |||
@@ -391,61 +391,11 @@ out: | |||
391 | return error; | 391 | return error; |
392 | } | 392 | } |
393 | 393 | ||
394 | 394 | static struct dentry *get_dentry(struct super_block *sb, void *vobjp) | |
395 | static struct dentry *export_iget(struct super_block *sb, unsigned long ino, __u32 generation) | ||
396 | { | 395 | { |
397 | 396 | return ERR_PTR(-ESTALE); | |
398 | /* iget isn't really right if the inode is currently unallocated!! | ||
399 | * This should really all be done inside each filesystem | ||
400 | * | ||
401 | * ext2fs' read_inode has been strengthed to return a bad_inode if | ||
402 | * the inode had been deleted. | ||
403 | * | ||
404 | * Currently we don't know the generation for parent directory, so | ||
405 | * a generation of 0 means "accept any" | ||
406 | */ | ||
407 | struct inode *inode; | ||
408 | struct dentry *result; | ||
409 | if (ino == 0) | ||
410 | return ERR_PTR(-ESTALE); | ||
411 | inode = iget(sb, ino); | ||
412 | if (inode == NULL) | ||
413 | return ERR_PTR(-ENOMEM); | ||
414 | if (is_bad_inode(inode) | ||
415 | || (generation && inode->i_generation != generation) | ||
416 | ) { | ||
417 | /* we didn't find the right inode.. */ | ||
418 | dprintk("fh_verify: Inode %lu, Bad count: %d %d or version %u %u\n", | ||
419 | inode->i_ino, | ||
420 | inode->i_nlink, atomic_read(&inode->i_count), | ||
421 | inode->i_generation, | ||
422 | generation); | ||
423 | |||
424 | iput(inode); | ||
425 | return ERR_PTR(-ESTALE); | ||
426 | } | ||
427 | /* now to find a dentry. | ||
428 | * If possible, get a well-connected one | ||
429 | */ | ||
430 | result = d_alloc_anon(inode); | ||
431 | if (!result) { | ||
432 | iput(inode); | ||
433 | return ERR_PTR(-ENOMEM); | ||
434 | } | ||
435 | return result; | ||
436 | } | 397 | } |
437 | 398 | ||
438 | |||
439 | static struct dentry *get_object(struct super_block *sb, void *vobjp) | ||
440 | { | ||
441 | __u32 *objp = vobjp; | ||
442 | unsigned long ino = objp[0]; | ||
443 | __u32 generation = objp[1]; | ||
444 | |||
445 | return export_iget(sb, ino, generation); | ||
446 | } | ||
447 | |||
448 | |||
449 | /** | 399 | /** |
450 | * export_encode_fh - default export_operations->encode_fh function | 400 | * export_encode_fh - default export_operations->encode_fh function |
451 | * @dentry: the dentry to encode | 401 | * @dentry: the dentry to encode |
@@ -524,7 +474,7 @@ struct export_operations export_op_default = { | |||
524 | 474 | ||
525 | .get_name = get_name, | 475 | .get_name = get_name, |
526 | .get_parent = get_parent, | 476 | .get_parent = get_parent, |
527 | .get_dentry = get_object, | 477 | .get_dentry = get_dentry, |
528 | }; | 478 | }; |
529 | 479 | ||
530 | EXPORT_SYMBOL(export_op_default); | 480 | EXPORT_SYMBOL(export_op_default); |