projects / mirror_zfs.git / blame
| Commit | Line | Data |
|---|---|---|
| 8299a1f4 BB |
1 | /* |
| 2 | * CDDL HEADER START | |
| 3 | * | |
| 4 | * The contents of this file are subject to the terms of the | |
| 5 | * Common Development and Distribution License (the "License"). | |
| 6 | * You may not use this file except in compliance with the License. | |
| 7 | * | |
| 8 | * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE | |
| 9 | * or http://www.opensolaris.org/os/licensing. | |
| 10 | * See the License for the specific language governing permissions | |
| 11 | * and limitations under the License. | |
| 12 | * | |
| 13 | * When distributing Covered Code, include this CDDL HEADER in each | |
| 14 | * file and include the License file at usr/src/OPENSOLARIS.LICENSE. | |
| 15 | * If applicable, add the following below this CDDL HEADER, with the | |
| 16 | * fields enclosed by brackets "[]" replaced with your own identifying | |
| 17 | * information: Portions Copyright [yyyy] [name of copyright owner] | |
| 18 | * | |
| 19 | * CDDL HEADER END | |
| 20 | */ | |
| 21 | ||
| 22 | /* | |
| 23 | * Copyright (C) 2011 Lawrence Livermore National Security, LLC. | |
| 24 | */ | |
| 25 | ||
| 26 | #ifndef _ZFS_DCACHE_H | |
| d1d7e268 | 27 | #define _ZFS_DCACHE_H |
| 8299a1f4 BB |
28 | |
| 29 | #include <linux/dcache.h> | |
| 30 | ||
| d1d7e268 MK |
31 | #define dname(dentry) ((char *)((dentry)->d_name.name)) |
| 32 | #define dlen(dentry) ((int)((dentry)->d_name.len)) | |
| 8299a1f4 | 33 | |
| 6a0936ba | 34 | #ifndef HAVE_D_MAKE_ROOT |
| d1d7e268 | 35 | #define d_make_root(inode) d_alloc_root(inode) |
| 6a0936ba RY |
36 | #endif /* HAVE_D_MAKE_ROOT */ |
| 37 | ||
| f1a05fa1 NB |
38 | /* |
| 39 | * 2.6.30 API change, | |
| 40 | * The const keyword was added to the 'struct dentry_operations' in | |
| 41 | * the dentry structure. To handle this we define an appropriate | |
| 42 | * dentry_operations_t typedef which can be used. | |
| 43 | */ | |
| 44 | #ifdef HAVE_CONST_DENTRY_OPERATIONS | |
| 45 | typedef const struct dentry_operations dentry_operations_t; | |
| 46 | #else | |
| 47 | typedef struct dentry_operations dentry_operations_t; | |
| 48 | #endif | |
| 49 | ||
| 50 | /* | |
| 51 | * 2.6.38 API change, | |
| 52 | * Added d_set_d_op() helper function which sets some flags in | |
| 53 | * dentry->d_flags based on which operations are defined. | |
| 54 | */ | |
| 55 | #ifndef HAVE_D_SET_D_OP | |
| 56 | static inline void | |
| 57 | d_set_d_op(struct dentry *dentry, dentry_operations_t *op) | |
| 58 | { | |
| 59 | dentry->d_op = op; | |
| 60 | } | |
| 61 | #endif /* HAVE_D_SET_D_OP */ | |
| 62 | ||
| bf01b5e6 BB |
63 | /* |
| 64 | * 2.6.38 API addition, | |
| 65 | * Added d_clear_d_op() helper function which clears some flags and the | |
| 66 | * registered dentry->d_op table. This is required because d_set_d_op() | |
| 67 | * issues a warning when the dentry operations table is already set. | |
| 68 | * For the .zfs control directory to work properly we must be able to | |
| 69 | * override the default operations table and register custom .d_automount | |
| 70 | * and .d_revalidate callbacks. | |
| 71 | */ | |
| 72 | static inline void | |
| 73 | d_clear_d_op(struct dentry *dentry) | |
| 74 | { | |
| 75 | #ifdef HAVE_D_SET_D_OP | |
| 76 | dentry->d_op = NULL; | |
| d1d7e268 MK |
77 | dentry->d_flags &= ~( |
| 78 | DCACHE_OP_HASH | DCACHE_OP_COMPARE | | |
| 79 | DCACHE_OP_REVALIDATE | DCACHE_OP_DELETE); | |
| bf01b5e6 BB |
80 | #endif /* HAVE_D_SET_D_OP */ |
| 81 | } | |
| 82 | ||
| 8299a1f4 | 83 | #endif /* _ZFS_DCACHE_H */ |