4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2013, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
37 #ifndef _LINUX_COMPAT25_H
38 #define _LINUX_COMPAT25_H
40 #include <linux/fs_struct.h>
41 #include <linux/namei.h>
42 #include <libcfs/linux/portals_compat25.h>
44 #include <linux/lustre_patchless_compat.h>
46 #ifdef HAVE_FS_STRUCT_RWLOCK
47 # define LOCK_FS_STRUCT(fs) write_lock(&(fs)->lock)
48 # define UNLOCK_FS_STRUCT(fs) write_unlock(&(fs)->lock)
50 # define LOCK_FS_STRUCT(fs) spin_lock(&(fs)->lock)
51 # define UNLOCK_FS_STRUCT(fs) spin_unlock(&(fs)->lock)
54 static inline void ll_set_fs_pwd(struct fs_struct *fs, struct vfsmount *mnt,
55 struct dentry *dentry)
73 * set ATTR_BLOCKS to a high value to avoid any risk of collision with other
74 * ATTR_* attributes (see bug 13828)
76 #define ATTR_BLOCKS (1 << 27)
78 #define current_ngroups current_cred()->group_info->ngroups
79 #define current_groups current_cred()->group_info->small_block
82 * OBD need working random driver, thus all our
83 * initialization routines must be called after device
84 * driver initialization
88 #define module_init(a) late_initcall(a)
91 #define LTIME_S(time) (time.tv_sec)
93 #ifdef HAVE_GENERIC_PERMISSION_2ARGS
94 # define ll_generic_permission(inode, mask, flags, check_acl) \
95 generic_permission(inode, mask)
96 #elif defined HAVE_GENERIC_PERMISSION_4ARGS
97 # define ll_generic_permission(inode, mask, flags, check_acl) \
98 generic_permission(inode, mask, flags, check_acl)
100 # define ll_generic_permission(inode, mask, flags, check_acl) \
101 generic_permission(inode, mask, check_acl)
104 #ifdef HAVE_4ARGS_VFS_SYMLINK
105 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
106 vfs_symlink(dir, dentry, path, mode)
108 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
109 vfs_symlink(dir, dentry, path)
112 #if !defined(HAVE_FILE_LLSEEK_SIZE) || defined(HAVE_FILE_LLSEEK_SIZE_5ARGS)
113 #define ll_generic_file_llseek_size(file, offset, origin, maxbytes, eof) \
114 generic_file_llseek_size(file, offset, origin, maxbytes, eof);
116 #define ll_generic_file_llseek_size(file, offset, origin, maxbytes, eof) \
117 generic_file_llseek_size(file, offset, origin, maxbytes);
120 #ifdef HAVE_INODE_DIO_WAIT
121 /* inode_dio_wait(i) use as-is for write lock */
122 # define inode_dio_write_done(i) do {} while (0) /* for write unlock */
123 # define inode_dio_read(i) atomic_inc(&(i)->i_dio_count)
124 /* inode_dio_done(i) use as-is for read unlock */
126 # define inode_dio_wait(i) down_write(&(i)->i_alloc_sem)
127 # define inode_dio_write_done(i) up_write(&(i)->i_alloc_sem)
128 # define inode_dio_read(i) down_read(&(i)->i_alloc_sem)
129 # define inode_dio_done(i) up_read(&(i)->i_alloc_sem)
132 #ifndef FS_HAS_FIEMAP
133 #define FS_HAS_FIEMAP (0)
136 /* add a lustre compatible layer for crypto API */
137 #include <linux/crypto.h>
138 static inline int ll_crypto_hmac(struct crypto_hash *tfm,
139 u8 *key, unsigned int *keylen,
140 struct scatterlist *sg,
141 unsigned int size, u8 *result)
143 struct hash_desc desc;
147 rv = crypto_hash_setkey(desc.tfm, key, *keylen);
149 CERROR("failed to hash setkey: %d\n", rv);
152 return crypto_hash_digest(&desc, sg, size, result);
156 unsigned int ll_crypto_tfm_alg_min_keysize(struct crypto_blkcipher *tfm)
158 return crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher.min_keysize;
161 #ifdef for_each_possible_cpu
162 #define cfs_for_each_possible_cpu(cpu) for_each_possible_cpu(cpu)
163 #elif defined(for_each_cpu)
164 #define cfs_for_each_possible_cpu(cpu) for_each_cpu(cpu)
167 #ifndef HAVE_SIMPLE_SETATTR
168 #define simple_setattr(dentry, ops) inode_setattr((dentry)->d_inode, ops)
171 #ifndef SLAB_DESTROY_BY_RCU
172 #define SLAB_DESTROY_BY_RCU 0
175 #ifndef HAVE_DQUOT_SUSPEND
176 # define ll_vfs_dq_init vfs_dq_init
177 # define ll_vfs_dq_drop vfs_dq_drop
178 # define ll_vfs_dq_transfer vfs_dq_transfer
179 # define ll_vfs_dq_off(sb, remount) vfs_dq_off(sb, remount)
181 # define ll_vfs_dq_init dquot_initialize
182 # define ll_vfs_dq_drop dquot_drop
183 # define ll_vfs_dq_transfer dquot_transfer
184 # define ll_vfs_dq_off(sb, remount) dquot_suspend(sb, -1)
187 #ifndef HAVE_BLKDEV_GET_BY_DEV
188 # define blkdev_get_by_dev(dev, mode, holder) open_by_devnum(dev, mode)
191 #ifndef HAVE_BLK_QUEUE_MAX_SEGMENTS
192 #define blk_queue_max_segments(rq, seg) \
193 do { blk_queue_max_phys_segments(rq, seg); \
194 blk_queue_max_hw_segments(rq, seg); } while (0)
196 #define queue_max_phys_segments(rq) queue_max_segments(rq)
197 #define queue_max_hw_segments(rq) queue_max_segments(rq)
200 #ifdef HAVE_KMAP_ATOMIC_HAS_1ARG
201 #define ll_kmap_atomic(a, b) kmap_atomic(a)
202 #define ll_kunmap_atomic(a, b) kunmap_atomic(a)
204 #define ll_kmap_atomic(a, b) kmap_atomic(a, b)
205 #define ll_kunmap_atomic(a, b) kunmap_atomic(a, b)
208 #ifndef HAVE_CLEAR_INODE
209 #define clear_inode(i) end_writeback(i)
212 #ifdef HAVE_DENTRY_D_ALIAS_HLIST
213 #define ll_d_hlist_node hlist_node
214 #define ll_d_hlist_empty(list) hlist_empty(list)
215 #define ll_d_hlist_entry(ptr, type, name) hlist_entry(ptr.first, type, name)
216 #define ll_d_hlist_for_each(tmp, i_dentry) hlist_for_each(tmp, i_dentry)
217 #ifdef HAVE_HLIST_FOR_EACH_3ARG
218 #define ll_d_hlist_for_each_entry(dentry, p, i_dentry, alias) \
219 p = NULL; hlist_for_each_entry(dentry, i_dentry, alias)
221 #define ll_d_hlist_for_each_entry(dentry, p, i_dentry, alias) \
222 hlist_for_each_entry(dentry, p, i_dentry, alias)
224 #define DECLARE_LL_D_HLIST_NODE_PTR(name) struct ll_d_hlist_node *name
226 #define ll_d_hlist_node list_head
227 #define ll_d_hlist_empty(list) list_empty(list)
228 #define ll_d_hlist_entry(ptr, type, name) list_entry(ptr.next, type, name)
229 #define ll_d_hlist_for_each(tmp, i_dentry) list_for_each(tmp, i_dentry)
230 #define ll_d_hlist_for_each_entry(dentry, p, i_dentry, alias) \
231 list_for_each_entry(dentry, i_dentry, alias)
232 #define DECLARE_LL_D_HLIST_NODE_PTR(name) /* nothing */
239 # define NO_QUOTA (-EDQUOT)
243 #define SEEK_DATA 3 /* seek to the next data */
246 #define SEEK_HOLE 4 /* seek to the next hole */
249 #ifndef FMODE_UNSIGNED_OFFSET
250 #define FMODE_UNSIGNED_OFFSET ((__force fmode_t)0x2000)
253 #if !defined(_ASM_GENERIC_BITOPS_EXT2_NON_ATOMIC_H_) && !defined(ext2_set_bit)
254 # define ext2_set_bit __test_and_set_bit_le
255 # define ext2_clear_bit __test_and_clear_bit_le
256 # define ext2_test_bit test_bit_le
257 # define ext2_find_first_zero_bit find_first_zero_bit_le
258 # define ext2_find_next_zero_bit find_next_zero_bit_le
261 #ifdef ATTR_TIMES_SET
262 # define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET | ATTR_TIMES_SET)
264 # define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET)
267 #ifndef HAVE_LM_XXX_LOCK_MANAGER_OPS
268 # define lm_compare_owner fl_compare_owner
272 * After 3.1, kernel's nameidata.intent.open.flags is different
273 * with lustre's lookup_intent.it_flags, as lustre's it_flags'
274 * lower bits equal to FMODE_xxx while kernel doesn't transliterate
275 * lower bits of nameidata.intent.open.flags to FMODE_xxx.
277 #include <linux/version.h>
278 static inline int ll_namei_to_lookup_intent_flag(int flag)
280 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 1, 0)
281 flag = (flag & ~O_ACCMODE) | OPEN_FMODE(flag);
286 #ifdef HAVE_VOID_MAKE_REQUEST_FN
287 # define ll_mrf_ret void
288 # define LL_MRF_RETURN(rc)
290 # define ll_mrf_ret int
291 # define LL_MRF_RETURN(rc) RETURN(rc)
294 #include <linux/fs.h>
295 #ifndef HAVE_PROTECT_I_NLINK
296 static inline void set_nlink(struct inode *inode, unsigned int nlink)
298 inode->i_nlink = nlink;
302 #ifdef HAVE_INODEOPS_USE_UMODE_T
303 # define ll_umode_t umode_t
305 # define ll_umode_t int
308 #include <linux/dcache.h>
309 #ifndef HAVE_D_MAKE_ROOT
310 static inline struct dentry *d_make_root(struct inode *root)
312 struct dentry *res = d_alloc_root(root);
314 if (res == NULL && root)
321 #ifdef HAVE_DIRTY_INODE_HAS_FLAG
322 # define ll_dirty_inode(inode, flag) (inode)->i_sb->s_op->dirty_inode((inode), flag)
324 # define ll_dirty_inode(inode, flag) (inode)->i_sb->s_op->dirty_inode((inode))
327 #ifdef HAVE_FILE_F_INODE
328 # define set_file_inode(file, inode) (file)->f_inode = inode
330 # define set_file_inode(file, inode)
333 #endif /* _COMPAT25_H */