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, 2014, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
37 #ifndef _LUSTRE_COMPAT_H
38 #define _LUSTRE_COMPAT_H
40 #include <linux/fs_struct.h>
41 #include <linux/namei.h>
43 #include <lustre_patchless_compat.h>
45 #ifdef HAVE_FS_STRUCT_RWLOCK
46 # define LOCK_FS_STRUCT(fs) write_lock(&(fs)->lock)
47 # define UNLOCK_FS_STRUCT(fs) write_unlock(&(fs)->lock)
49 # define LOCK_FS_STRUCT(fs) spin_lock(&(fs)->lock)
50 # define UNLOCK_FS_STRUCT(fs) spin_unlock(&(fs)->lock)
53 static inline void ll_set_fs_pwd(struct fs_struct *fs, struct vfsmount *mnt,
54 struct dentry *dentry)
72 * set ATTR_BLOCKS to a high value to avoid any risk of collision with other
73 * ATTR_* attributes (see bug 13828)
75 #define ATTR_BLOCKS (1 << 27)
77 #define current_ngroups current_cred()->group_info->ngroups
78 #define current_groups current_cred()->group_info->small_block
81 * OBD need working random driver, thus all our
82 * initialization routines must be called after device
83 * driver initialization
87 #define module_init(a) late_initcall(a)
90 #ifndef MODULE_ALIAS_FS
91 #define MODULE_ALIAS_FS(name)
94 #define LTIME_S(time) (time.tv_sec)
96 #ifdef HAVE_GENERIC_PERMISSION_2ARGS
97 # define ll_generic_permission(inode, mask, flags, check_acl) \
98 generic_permission(inode, mask)
99 #elif defined HAVE_GENERIC_PERMISSION_4ARGS
100 # define ll_generic_permission(inode, mask, flags, check_acl) \
101 generic_permission(inode, mask, flags, check_acl)
103 # define ll_generic_permission(inode, mask, flags, check_acl) \
104 generic_permission(inode, mask, check_acl)
107 #ifdef HAVE_4ARGS_VFS_SYMLINK
108 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
109 vfs_symlink(dir, dentry, path, mode)
111 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
112 vfs_symlink(dir, dentry, path)
115 #if !defined(HAVE_FILE_LLSEEK_SIZE) || defined(HAVE_FILE_LLSEEK_SIZE_5ARGS)
116 #define ll_generic_file_llseek_size(file, offset, origin, maxbytes, eof) \
117 generic_file_llseek_size(file, offset, origin, maxbytes, eof);
119 #define ll_generic_file_llseek_size(file, offset, origin, maxbytes, eof) \
120 generic_file_llseek_size(file, offset, origin, maxbytes);
123 #ifdef HAVE_INODE_DIO_WAIT
124 /* inode_dio_wait(i) use as-is for write lock */
125 # define inode_dio_write_done(i) do {} while (0) /* for write unlock */
127 # define inode_dio_wait(i) down_write(&(i)->i_alloc_sem)
128 # define inode_dio_write_done(i) up_write(&(i)->i_alloc_sem)
131 #ifndef FS_HAS_FIEMAP
132 #define FS_HAS_FIEMAP (0)
135 /* add a lustre compatible layer for crypto API */
136 #include <linux/crypto.h>
137 static inline int ll_crypto_hmac(struct crypto_hash *tfm,
138 u8 *key, unsigned int *keylen,
139 struct scatterlist *sg,
140 unsigned int size, u8 *result)
142 struct hash_desc desc;
146 rv = crypto_hash_setkey(desc.tfm, key, *keylen);
148 CERROR("failed to hash setkey: %d\n", rv);
151 return crypto_hash_digest(&desc, sg, size, result);
155 unsigned int ll_crypto_tfm_alg_min_keysize(struct crypto_blkcipher *tfm)
157 return crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher.min_keysize;
160 #ifndef HAVE_SIMPLE_SETATTR
161 #define simple_setattr(dentry, ops) inode_setattr((dentry)->d_inode, ops)
164 #ifndef SLAB_DESTROY_BY_RCU
165 #define SLAB_DESTROY_BY_RCU 0
168 #ifndef HAVE_DQUOT_SUSPEND
169 # define ll_vfs_dq_init vfs_dq_init
170 # define ll_vfs_dq_drop vfs_dq_drop
171 # define ll_vfs_dq_transfer vfs_dq_transfer
172 # define ll_vfs_dq_off(sb, remount) vfs_dq_off(sb, remount)
174 # define ll_vfs_dq_init dquot_initialize
175 # define ll_vfs_dq_drop dquot_drop
176 # define ll_vfs_dq_transfer dquot_transfer
177 # define ll_vfs_dq_off(sb, remount) dquot_suspend(sb, -1)
180 #ifndef HAVE_BLKDEV_GET_BY_DEV
181 # define blkdev_get_by_dev(dev, mode, holder) open_by_devnum(dev, mode)
184 #ifdef HAVE_BVEC_ITER
185 #define bio_idx(bio) (bio->bi_iter.bi_idx)
186 #define bio_set_sector(bio, sector) (bio->bi_iter.bi_sector = sector)
187 #define bvl_to_page(bvl) (bvl.bv_page)
189 #define bio_idx(bio) (bio->bi_idx)
190 #define bio_set_sector(bio, sector) (bio->bi_sector = sector)
191 #define bio_sectors(bio) ((bio)->bi_size >> 9)
192 #ifndef HAVE_BIO_END_SECTOR
193 #define bio_end_sector(bio) (bio->bi_sector + bio_sectors(bio))
195 #define bvl_to_page(bvl) (bvl->bv_page)
198 #ifndef HAVE_BLK_QUEUE_MAX_SEGMENTS
199 #define blk_queue_max_segments(rq, seg) \
200 do { blk_queue_max_phys_segments(rq, seg); \
201 blk_queue_max_hw_segments(rq, seg); } while (0)
203 #define queue_max_phys_segments(rq) queue_max_segments(rq)
204 #define queue_max_hw_segments(rq) queue_max_segments(rq)
207 #ifdef HAVE_KMAP_ATOMIC_HAS_1ARG
208 #define ll_kmap_atomic(a, b) kmap_atomic(a)
209 #define ll_kunmap_atomic(a, b) kunmap_atomic(a)
211 #define ll_kmap_atomic(a, b) kmap_atomic(a, b)
212 #define ll_kunmap_atomic(a, b) kunmap_atomic(a, b)
215 #ifndef HAVE_CLEAR_INODE
216 #define clear_inode(i) end_writeback(i)
219 #ifndef HAVE_DENTRY_D_CHILD
220 #define d_child d_u.d_child
223 #ifdef HAVE_DENTRY_D_U_D_ALIAS
224 #define d_alias d_u.d_alias
227 #ifndef DATA_FOR_LLITE_IS_LIST
228 #define ll_d_hlist_node hlist_node
229 #define ll_d_hlist_empty(list) hlist_empty(list)
230 #define ll_d_hlist_entry(ptr, type, name) hlist_entry(ptr.first, type, name)
231 #define ll_d_hlist_for_each(tmp, i_dentry) hlist_for_each(tmp, i_dentry)
232 # ifdef HAVE_HLIST_FOR_EACH_3ARG
233 # define ll_d_hlist_for_each_entry(dentry, p, i_dentry) \
234 p = NULL; hlist_for_each_entry(dentry, i_dentry, d_alias)
236 # define ll_d_hlist_for_each_entry(dentry, p, i_dentry) \
237 hlist_for_each_entry(dentry, p, i_dentry, d_alias)
239 #define DECLARE_LL_D_HLIST_NODE_PTR(name) struct ll_d_hlist_node *name
241 #define ll_d_hlist_node list_head
242 #define ll_d_hlist_empty(list) list_empty(list)
243 #define ll_d_hlist_entry(ptr, type, name) list_entry(ptr.next, type, name)
244 #define ll_d_hlist_for_each(tmp, i_dentry) list_for_each(tmp, i_dentry)
245 #define ll_d_hlist_for_each_entry(dentry, p, i_dentry) \
246 list_for_each_entry(dentry, i_dentry, d_alias)
247 #define DECLARE_LL_D_HLIST_NODE_PTR(name) /* nothing */
248 #endif /* !DATA_FOR_LLITE_IS_LIST */
254 # define NO_QUOTA (-EDQUOT)
258 #define SEEK_DATA 3 /* seek to the next data */
261 #define SEEK_HOLE 4 /* seek to the next hole */
264 #ifndef FMODE_UNSIGNED_OFFSET
265 #define FMODE_UNSIGNED_OFFSET ((__force fmode_t)0x2000)
268 #if !defined(_ASM_GENERIC_BITOPS_EXT2_NON_ATOMIC_H_) && !defined(ext2_set_bit)
269 # define ext2_set_bit __test_and_set_bit_le
270 # define ext2_clear_bit __test_and_clear_bit_le
271 # define ext2_test_bit test_bit_le
272 # define ext2_find_first_zero_bit find_first_zero_bit_le
273 # define ext2_find_next_zero_bit find_next_zero_bit_le
276 #ifdef ATTR_TIMES_SET
277 # define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET | ATTR_TIMES_SET)
279 # define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET)
282 #ifndef HAVE_LM_XXX_LOCK_MANAGER_OPS
283 # define lm_compare_owner fl_compare_owner
287 * After 3.1, kernel's nameidata.intent.open.flags is different
288 * with lustre's lookup_intent.it_flags, as lustre's it_flags'
289 * lower bits equal to FMODE_xxx while kernel doesn't transliterate
290 * lower bits of nameidata.intent.open.flags to FMODE_xxx.
292 #include <linux/version.h>
293 static inline int ll_namei_to_lookup_intent_flag(int flag)
295 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 1, 0)
296 flag = (flag & ~O_ACCMODE) | OPEN_FMODE(flag);
301 #ifdef HAVE_QC_MAKE_REQUEST_FN
302 # define ll_mrf_ret blk_qc_t
303 # define LL_MRF_RETURN(rc) RETURN(BLK_QC_T_NONE)
305 # ifdef HAVE_VOID_MAKE_REQUEST_FN
306 # define ll_mrf_ret void
307 # define LL_MRF_RETURN(rc)
309 # define ll_mrf_ret int
310 # define LL_MRF_RETURN(rc) RETURN(rc)
314 #include <linux/fs.h>
315 #ifndef HAVE_PROTECT_I_NLINK
316 static inline void set_nlink(struct inode *inode, unsigned int nlink)
318 inode->i_nlink = nlink;
322 #ifdef HAVE_INODEOPS_USE_UMODE_T
323 # define ll_umode_t umode_t
325 # define ll_umode_t int
328 #include <linux/dcache.h>
329 #ifndef HAVE_D_MAKE_ROOT
330 static inline struct dentry *d_make_root(struct inode *root)
332 struct dentry *res = d_alloc_root(root);
334 if (res == NULL && root)
341 #ifdef HAVE_DIRTY_INODE_HAS_FLAG
342 # define ll_dirty_inode(inode, flag) (inode)->i_sb->s_op->dirty_inode((inode), flag)
344 # define ll_dirty_inode(inode, flag) (inode)->i_sb->s_op->dirty_inode((inode))
347 #ifdef HAVE_FILE_F_INODE
348 # define set_file_inode(file, inode) (file)->f_inode = inode
350 # define set_file_inode(file, inode)
353 #ifdef HAVE_OLDSIZE_TRUNCATE_PAGECACHE
354 #define ll_truncate_pagecache(inode, size) truncate_pagecache(inode, 0, size)
356 #define ll_truncate_pagecache(inode, size) truncate_pagecache(inode, size)
359 #ifdef HAVE_VFS_RENAME_5ARGS
360 #define ll_vfs_rename(a, b, c, d) vfs_rename(a, b, c, d, NULL)
361 #elif defined HAVE_VFS_RENAME_6ARGS
362 #define ll_vfs_rename(a, b, c, d) vfs_rename(a, b, c, d, NULL, 0)
364 #define ll_vfs_rename(a, b, c, d) vfs_rename(a, b, c, d)
367 #ifdef HAVE_VFS_UNLINK_3ARGS
368 #define ll_vfs_unlink(a, b) vfs_unlink(a, b, NULL)
370 #define ll_vfs_unlink(a, b) vfs_unlink(a, b)
373 #ifndef HAVE_RADIX_EXCEPTION_ENTRY
374 static inline int radix_tree_exceptional_entry(void *arg)
380 #ifndef HAVE_TRUNCATE_INODE_PAGES_FINAL
381 static inline void truncate_inode_pages_final(struct address_space *map)
383 truncate_inode_pages(map, 0);
384 /* Workaround for LU-118 */
386 spin_lock_irq(&map->tree_lock);
387 spin_unlock_irq(&map->tree_lock);
388 } /* Workaround end */
393 #define SIZE_MAX (~(size_t)0)
396 #ifdef HAVE_SECURITY_IINITSEC_CALLBACK
397 # define ll_security_inode_init_security(inode, dir, name, value, len, \
398 initxattrs, dentry) \
399 security_inode_init_security(inode, dir, &((dentry)->d_name), \
401 #elif defined HAVE_SECURITY_IINITSEC_QSTR
402 # define ll_security_inode_init_security(inode, dir, name, value, len, \
403 initxattrs, dentry) \
404 security_inode_init_security(inode, dir, &((dentry)->d_name), \
406 #else /* !HAVE_SECURITY_IINITSEC_CALLBACK && !HAVE_SECURITY_IINITSEC_QSTR */
407 # define ll_security_inode_init_security(inode, dir, name, value, len, \
408 initxattrs, dentry) \
409 security_inode_init_security(inode, dir, name, value, len)
412 #endif /* _LUSTRE_COMPAT_H */