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_DENTRY_OPEN_USE_PATH
105 #define ll_dentry_open(a,b,c) dentry_open(a,b,c)
108 * dentry_open handles its own reference counting since Linux v3.6
109 * (commit 765927b2). Callers should free their own references.
111 * Prior versions expected the caller to increment the references.
112 * The references are retained on success and freed on error.
114 static inline struct file *ll_dentry_open(struct path *path, int flags,
115 const struct cred *cred)
119 return dentry_open(path->dentry, path->mnt, flags, cred);
123 #ifdef HAVE_4ARGS_VFS_SYMLINK
124 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
125 vfs_symlink(dir, dentry, path, mode)
127 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
128 vfs_symlink(dir, dentry, path)
131 #if !defined(HAVE_FILE_LLSEEK_SIZE) || defined(HAVE_FILE_LLSEEK_SIZE_5ARGS)
132 #define ll_generic_file_llseek_size(file, offset, origin, maxbytes, eof) \
133 generic_file_llseek_size(file, offset, origin, maxbytes, eof);
135 #define ll_generic_file_llseek_size(file, offset, origin, maxbytes, eof) \
136 generic_file_llseek_size(file, offset, origin, maxbytes);
139 #ifdef HAVE_INODE_DIO_WAIT
140 /* inode_dio_wait(i) use as-is for write lock */
141 # define inode_dio_write_done(i) do {} while (0) /* for write unlock */
142 # define inode_dio_read(i) atomic_inc(&(i)->i_dio_count)
143 /* inode_dio_done(i) use as-is for read unlock */
145 # define inode_dio_wait(i) down_write(&(i)->i_alloc_sem)
146 # define inode_dio_write_done(i) up_write(&(i)->i_alloc_sem)
147 # define inode_dio_read(i) down_read(&(i)->i_alloc_sem)
148 # define inode_dio_done(i) up_read(&(i)->i_alloc_sem)
151 #ifndef FS_HAS_FIEMAP
152 #define FS_HAS_FIEMAP (0)
155 /* add a lustre compatible layer for crypto API */
156 #include <linux/crypto.h>
157 #define ll_crypto_hash crypto_hash
158 #define ll_crypto_cipher crypto_blkcipher
159 #define ll_crypto_alloc_hash(name, type, mask) crypto_alloc_hash(name, type, mask)
160 #define ll_crypto_hash_setkey(tfm, key, keylen) crypto_hash_setkey(tfm, key, keylen)
161 #define ll_crypto_hash_init(desc) crypto_hash_init(desc)
162 #define ll_crypto_hash_update(desc, sl, bytes) crypto_hash_update(desc, sl, bytes)
163 #define ll_crypto_hash_final(desc, out) crypto_hash_final(desc, out)
164 #define ll_crypto_blkcipher_setkey(tfm, key, keylen) \
165 crypto_blkcipher_setkey(tfm, key, keylen)
166 #define ll_crypto_blkcipher_set_iv(tfm, src, len) \
167 crypto_blkcipher_set_iv(tfm, src, len)
168 #define ll_crypto_blkcipher_get_iv(tfm, dst, len) \
169 crypto_blkcipher_get_iv(tfm, dst, len)
170 #define ll_crypto_blkcipher_encrypt(desc, dst, src, bytes) \
171 crypto_blkcipher_encrypt(desc, dst, src, bytes)
172 #define ll_crypto_blkcipher_decrypt(desc, dst, src, bytes) \
173 crypto_blkcipher_decrypt(desc, dst, src, bytes)
174 #define ll_crypto_blkcipher_encrypt_iv(desc, dst, src, bytes) \
175 crypto_blkcipher_encrypt_iv(desc, dst, src, bytes)
176 #define ll_crypto_blkcipher_decrypt_iv(desc, dst, src, bytes) \
177 crypto_blkcipher_decrypt_iv(desc, dst, src, bytes)
180 struct ll_crypto_cipher *ll_crypto_alloc_blkcipher(const char *name,
183 struct ll_crypto_cipher *rtn = crypto_alloc_blkcipher(name, type, mask);
185 return (rtn == NULL ? ERR_PTR(-ENOMEM) : rtn);
188 static inline int ll_crypto_hmac(struct ll_crypto_hash *tfm,
189 u8 *key, unsigned int *keylen,
190 struct scatterlist *sg,
191 unsigned int size, u8 *result)
193 struct hash_desc desc;
197 rv = crypto_hash_setkey(desc.tfm, key, *keylen);
199 CERROR("failed to hash setkey: %d\n", rv);
202 return crypto_hash_digest(&desc, sg, size, result);
205 unsigned int ll_crypto_tfm_alg_max_keysize(struct crypto_blkcipher *tfm)
207 return crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher.max_keysize;
210 unsigned int ll_crypto_tfm_alg_min_keysize(struct crypto_blkcipher *tfm)
212 return crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher.min_keysize;
215 #define ll_crypto_hash_blocksize(tfm) crypto_hash_blocksize(tfm)
216 #define ll_crypto_hash_digestsize(tfm) crypto_hash_digestsize(tfm)
217 #define ll_crypto_blkcipher_ivsize(tfm) crypto_blkcipher_ivsize(tfm)
218 #define ll_crypto_blkcipher_blocksize(tfm) crypto_blkcipher_blocksize(tfm)
219 #define ll_crypto_free_hash(tfm) crypto_free_hash(tfm)
220 #define ll_crypto_free_blkcipher(tfm) crypto_free_blkcipher(tfm)
222 #ifdef for_each_possible_cpu
223 #define cfs_for_each_possible_cpu(cpu) for_each_possible_cpu(cpu)
224 #elif defined(for_each_cpu)
225 #define cfs_for_each_possible_cpu(cpu) for_each_cpu(cpu)
228 #ifdef HAVE_BIO_ENDIO_2ARG
229 #define cfs_bio_io_error(a,b) bio_io_error((a))
230 #define cfs_bio_endio(a,b,c) bio_endio((a),(c))
232 #define cfs_bio_io_error(a,b) bio_io_error((a),(b))
233 #define cfs_bio_endio(a,b,c) bio_endio((a),(b),(c))
236 #ifndef HAVE_SIMPLE_SETATTR
237 #define simple_setattr(dentry, ops) inode_setattr((dentry)->d_inode, ops)
240 #ifndef SLAB_DESTROY_BY_RCU
241 #define SLAB_DESTROY_BY_RCU 0
244 #ifndef HAVE_DQUOT_SUSPEND
245 # define ll_vfs_dq_init vfs_dq_init
246 # define ll_vfs_dq_drop vfs_dq_drop
247 # define ll_vfs_dq_transfer vfs_dq_transfer
248 # define ll_vfs_dq_off(sb, remount) vfs_dq_off(sb, remount)
250 # define ll_vfs_dq_init dquot_initialize
251 # define ll_vfs_dq_drop dquot_drop
252 # define ll_vfs_dq_transfer dquot_transfer
253 # define ll_vfs_dq_off(sb, remount) dquot_suspend(sb, -1)
256 #ifndef HAVE_BLKDEV_GET_BY_DEV
257 # define blkdev_get_by_dev(dev, mode, holder) open_by_devnum(dev, mode)
260 #ifndef HAVE_BLK_QUEUE_MAX_SEGMENTS
261 #define blk_queue_max_segments(rq, seg) \
262 do { blk_queue_max_phys_segments(rq, seg); \
263 blk_queue_max_hw_segments(rq, seg); } while (0)
265 #define queue_max_phys_segments(rq) queue_max_segments(rq)
266 #define queue_max_hw_segments(rq) queue_max_segments(rq)
269 #ifdef HAVE_KMAP_ATOMIC_HAS_1ARG
270 #define ll_kmap_atomic(a, b) kmap_atomic(a)
271 #define ll_kunmap_atomic(a, b) kunmap_atomic(a)
273 #define ll_kmap_atomic(a, b) kmap_atomic(a, b)
274 #define ll_kunmap_atomic(a, b) kunmap_atomic(a, b)
277 #ifndef HAVE_CLEAR_INODE
278 #define clear_inode(i) end_writeback(i)
281 #ifdef HAVE_DENTRY_D_ALIAS_HLIST
282 #define ll_d_hlist_node hlist_node
283 #define ll_d_hlist_empty(list) hlist_empty(list)
284 #define ll_d_hlist_entry(ptr, type, name) hlist_entry(ptr.first, type, name)
285 #define ll_d_hlist_for_each(tmp, i_dentry) hlist_for_each(tmp, i_dentry)
286 #ifdef HAVE_HLIST_FOR_EACH_3ARG
287 #define ll_d_hlist_for_each_entry(dentry, p, i_dentry, alias) \
288 p = NULL; hlist_for_each_entry(dentry, i_dentry, alias)
290 #define ll_d_hlist_for_each_entry(dentry, p, i_dentry, alias) \
291 hlist_for_each_entry(dentry, p, i_dentry, alias)
293 #define DECLARE_LL_D_HLIST_NODE_PTR(name) struct ll_d_hlist_node *name
295 #define ll_d_hlist_node list_head
296 #define ll_d_hlist_empty(list) list_empty(list)
297 #define ll_d_hlist_entry(ptr, type, name) list_entry(ptr.next, type, name)
298 #define ll_d_hlist_for_each(tmp, i_dentry) list_for_each(tmp, i_dentry)
299 #define ll_d_hlist_for_each_entry(dentry, p, i_dentry, alias) \
300 list_for_each_entry(dentry, i_dentry, alias)
301 #define DECLARE_LL_D_HLIST_NODE_PTR(name) /* nothing */
308 # define NO_QUOTA (-EDQUOT)
312 #define SEEK_DATA 3 /* seek to the next data */
315 #define SEEK_HOLE 4 /* seek to the next hole */
318 #ifndef FMODE_UNSIGNED_OFFSET
319 #define FMODE_UNSIGNED_OFFSET ((__force fmode_t)0x2000)
322 #if !defined(_ASM_GENERIC_BITOPS_EXT2_NON_ATOMIC_H_) && !defined(ext2_set_bit)
323 # define ext2_set_bit __test_and_set_bit_le
324 # define ext2_clear_bit __test_and_clear_bit_le
325 # define ext2_test_bit test_bit_le
326 # define ext2_find_first_zero_bit find_first_zero_bit_le
327 # define ext2_find_next_zero_bit find_next_zero_bit_le
330 #ifdef ATTR_TIMES_SET
331 # define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET | ATTR_TIMES_SET)
333 # define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET)
336 #ifndef HAVE_LM_XXX_LOCK_MANAGER_OPS
337 # define lm_compare_owner fl_compare_owner
341 * After 3.1, kernel's nameidata.intent.open.flags is different
342 * with lustre's lookup_intent.it_flags, as lustre's it_flags'
343 * lower bits equal to FMODE_xxx while kernel doesn't transliterate
344 * lower bits of nameidata.intent.open.flags to FMODE_xxx.
346 #include <linux/version.h>
347 static inline int ll_namei_to_lookup_intent_flag(int flag)
349 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 1, 0)
350 flag = (flag & ~O_ACCMODE) | OPEN_FMODE(flag);
355 #ifdef HAVE_VOID_MAKE_REQUEST_FN
356 # define ll_mrf_ret void
357 # define LL_MRF_RETURN(rc)
359 # define ll_mrf_ret int
360 # define LL_MRF_RETURN(rc) RETURN(rc)
363 #include <linux/fs.h>
364 #ifndef HAVE_PROTECT_I_NLINK
365 static inline void set_nlink(struct inode *inode, unsigned int nlink)
367 inode->i_nlink = nlink;
371 #ifdef HAVE_INODEOPS_USE_UMODE_T
372 # define ll_umode_t umode_t
374 # define ll_umode_t int
377 #include <linux/dcache.h>
378 #ifndef HAVE_D_MAKE_ROOT
379 static inline struct dentry *d_make_root(struct inode *root)
381 struct dentry *res = d_alloc_root(root);
383 if (res == NULL && root)
390 #ifdef HAVE_DIRTY_INODE_HAS_FLAG
391 # define ll_dirty_inode(inode, flag) (inode)->i_sb->s_op->dirty_inode((inode), flag)
393 # define ll_dirty_inode(inode, flag) (inode)->i_sb->s_op->dirty_inode((inode))
396 #endif /* _COMPAT25_H */