lustre/include/linux/lustre_compat25.h

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   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.
   9  *
  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).
  15  *
  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
  19  *
  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
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2011, 2012, Whamcloud, Inc.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  */
  36
  37 #ifndef _LINUX_COMPAT25_H
  38 #define _LINUX_COMPAT25_H
  39
  40 #ifdef __KERNEL__
  41
  42 #include <linux/fs_struct.h>
  43 #include <linux/namei.h>
  44 #include <libcfs/linux/portals_compat25.h>
  45
  46 #include <linux/lustre_patchless_compat.h>
  47
  48 /* Some old kernels (like 2.6.9) may not define such SEEK_XXX. So the
  49  * definition allows to compile lustre client on more OS platforms. */
  50 #ifndef SEEK_SET
  51  #define SEEK_SET 0
  52  #define SEEK_CUR 1
  53  #define SEEK_END 2
  54 #endif
  55
  56 #ifdef HAVE_FS_STRUCT_RWLOCK
  57 # define LOCK_FS_STRUCT(fs)   cfs_write_lock(&(fs)->lock)
  58 # define UNLOCK_FS_STRUCT(fs) cfs_write_unlock(&(fs)->lock)
  59 #else
  60 # define LOCK_FS_STRUCT(fs)   cfs_spin_lock(&(fs)->lock)
  61 # define UNLOCK_FS_STRUCT(fs) cfs_spin_unlock(&(fs)->lock)
  62 #endif
  63
  64 #ifdef HAVE_FS_STRUCT_USE_PATH
  65 static inline void ll_set_fs_pwd(struct fs_struct *fs, struct vfsmount *mnt,
  66                                  struct dentry *dentry)
  67 {
  68         struct path path;
  69         struct path old_pwd;
  70
  71         path.mnt = mnt;
  72         path.dentry = dentry;
  73         LOCK_FS_STRUCT(fs);
  74         old_pwd = fs->pwd;
  75         path_get(&path);
  76         fs->pwd = path;
  77         UNLOCK_FS_STRUCT(fs);
  78
  79         if (old_pwd.dentry)
  80                 path_put(&old_pwd);
  81 }
  82
  83 #else
  84
  85 static inline void ll_set_fs_pwd(struct fs_struct *fs, struct vfsmount *mnt,
  86                 struct dentry *dentry)
  87 {
  88         struct dentry *old_pwd;
  89         struct vfsmount *old_pwdmnt;
  90
  91         LOCK_FS_STRUCT(fs);
  92         old_pwd = fs->pwd;
  93         old_pwdmnt = fs->pwdmnt;
  94         fs->pwdmnt = mntget(mnt);
  95         fs->pwd = dget(dentry);
  96         UNLOCK_FS_STRUCT(fs);
  97
  98         if (old_pwd) {
  99                 dput(old_pwd);
 100                 mntput(old_pwdmnt);
 101         }
 102 }
 103 #endif
 104
 105 /*
 106  * set ATTR_BLOCKS to a high value to avoid any risk of collision with other
 107  * ATTR_* attributes (see bug 13828)
 108  */
 109 #define ATTR_BLOCKS    (1 << 27)
 110
 111 #define current_ngroups current_cred()->group_info->ngroups
 112 #define current_groups current_cred()->group_info->small_block
 113
 114 #ifndef page_private
 115 #define page_private(page) ((page)->private)
 116 #define set_page_private(page, v) ((page)->private = (v))
 117 #endif
 118
 119 #define ll_kernel_locked()      kernel_locked()
 120
 121 /*
 122  * OBD need working random driver, thus all our
 123  * initialization routines must be called after device
 124  * driver initialization
 125  */
 126 #ifndef MODULE
 127 #undef module_init
 128 #define module_init(a)     late_initcall(a)
 129 #endif
 130
 131 /* XXX our code should be using the 2.6 calls, not the other way around */
 132 #ifdef HAVE_TRYLOCK_PAGE
 133 #define TestSetPageLocked(page)         (!trylock_page(page))
 134 #endif
 135
 136 #define Page_Uptodate(page)             PageUptodate(page)
 137 #define ll_redirty_page(page)           set_page_dirty(page)
 138
 139 #define KDEVT_INIT(val)                 (val)
 140
 141 #define LTIME_S(time)                   (time.tv_sec)
 142 #define ll_path_lookup                  path_lookup
 143
 144 #ifdef HAVE_EXPORT_INODE_PERMISSION
 145 #define ll_permission(inode,mask,nd)    inode_permission(inode,mask)
 146 #else
 147 #define ll_permission(inode,mask,nd)    permission(inode,mask,nd)
 148 #endif
 149
 150 #ifdef HAVE_GENERIC_PERMISSION_4ARGS
 151 #define ll_generic_permission(inode, mask, flags, check_acl) \
 152         generic_permission(inode, mask, flags, check_acl)
 153 #else
 154 #define ll_generic_permission(inode, mask, flags, check_acl) \
 155         generic_permission(inode, mask, check_acl)
 156 #endif
 157
 158 #define ll_pgcache_lock(mapping)          cfs_spin_lock(&mapping->page_lock)
 159 #define ll_pgcache_unlock(mapping)        cfs_spin_unlock(&mapping->page_lock)
 160 #define ll_call_writepage(inode, page)  \
 161                                 (inode)->i_mapping->a_ops->writepage(page, NULL)
 162 #define ll_invalidate_inode_pages(inode) \
 163                                 invalidate_inode_pages((inode)->i_mapping)
 164
 165 #define ll_vfs_create(a,b,c,d)          vfs_create(a,b,c,d)
 166 #define ll_dev_t                        dev_t
 167 #define kdev_t                          dev_t
 168 #define to_kdev_t(dev)                  (dev)
 169 #define kdev_t_to_nr(dev)               (dev)
 170 #define val_to_kdev(dev)                (dev)
 171
 172 #ifdef HAVE_BLKDEV_PUT_2ARGS
 173 #define ll_blkdev_put(a, b) blkdev_put(a, b)
 174 #else
 175 #define ll_blkdev_put(a, b) blkdev_put(a)
 176 #endif
 177
 178 #ifdef HAVE_DENTRY_OPEN_4ARGS
 179 #define ll_dentry_open(a, b, c, d) dentry_open(a, b, c, d)
 180 #else
 181 #define ll_dentry_open(a, b, c, d) dentry_open(a, b, c)
 182 #endif
 183
 184 #include <linux/writeback.h>
 185
 186 static inline int cfs_cleanup_group_info(void)
 187 {
 188         struct group_info *ginfo;
 189
 190         ginfo = groups_alloc(0);
 191         if (!ginfo)
 192                 return -ENOMEM;
 193
 194         set_current_groups(ginfo);
 195         put_group_info(ginfo);
 196
 197         return 0;
 198 }
 199
 200 #define __set_page_ll_data(page, llap) \
 201         do {       \
 202                 page_cache_get(page); \
 203                 SetPagePrivate(page); \
 204                 set_page_private(page, (unsigned long)llap); \
 205         } while (0)
 206 #define __clear_page_ll_data(page) \
 207         do {       \
 208                 ClearPagePrivate(page); \
 209                 set_page_private(page, 0); \
 210                 page_cache_release(page); \
 211         } while(0)
 212
 213 #define kiobuf bio
 214
 215 #include <linux/proc_fs.h>
 216
 217 #define CheckWriteback(page, cmd) \
 218         ((!PageWriteback(page) && (cmd & OBD_BRW_READ)) || \
 219          (PageWriteback(page) && (cmd & OBD_BRW_WRITE)))
 220
 221 #ifdef HAVE_PAGE_LIST
 222 static inline int mapping_has_pages(struct address_space *mapping)
 223 {
 224         int rc = 1;
 225
 226         ll_pgcache_lock(mapping);
 227         if (cfs_list_empty(&mapping->dirty_pages) &&
 228             cfs_list_empty(&mapping->clean_pages) &&
 229             cfs_list_empty(&mapping->locked_pages)) {
 230                 rc = 0;
 231         }
 232         ll_pgcache_unlock(mapping);
 233
 234         return rc;
 235 }
 236 #else
 237 static inline int mapping_has_pages(struct address_space *mapping)
 238 {
 239         return mapping->nrpages > 0;
 240 }
 241 #endif
 242
 243 #ifdef HAVE_KIOBUF_KIO_BLOCKS
 244 #define KIOBUF_GET_BLOCKS(k) ((k)->kio_blocks)
 245 #else
 246 #define KIOBUF_GET_BLOCKS(k) ((k)->blocks)
 247 #endif
 248
 249 #ifdef HAVE_SECURITY_PLUG
 250 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
 251                 vfs_symlink(dir, dentry, mnt, path, mode)
 252 #else
 253 #ifdef HAVE_4ARGS_VFS_SYMLINK
 254 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
 255                 vfs_symlink(dir, dentry, path, mode)
 256 #else
 257 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
 258                        vfs_symlink(dir, dentry, path)
 259 #endif
 260
 261 #endif
 262
 263 #ifndef container_of
 264 #define container_of(ptr, type, member) ({                      \
 265                 const typeof( ((type *)0)->member ) *__mptr = (ptr); \
 266                 (type *)( (char *)__mptr - offsetof(type,member) );})
 267 #endif
 268
 269 #define UP_WRITE_I_ALLOC_SEM(i)   up_write(&(i)->i_alloc_sem)
 270 #define DOWN_WRITE_I_ALLOC_SEM(i) down_write(&(i)->i_alloc_sem)
 271 #define LASSERT_I_ALLOC_SEM_WRITE_LOCKED(i) LASSERT(down_read_trylock(&(i)->i_alloc_sem) == 0)
 272
 273 #define UP_READ_I_ALLOC_SEM(i)    up_read(&(i)->i_alloc_sem)
 274 #define DOWN_READ_I_ALLOC_SEM(i)  down_read(&(i)->i_alloc_sem)
 275 #define LASSERT_I_ALLOC_SEM_READ_LOCKED(i) LASSERT(down_write_trylock(&(i)->i_alloc_sem) == 0)
 276
 277 #include <linux/mpage.h>        /* for generic_writepages */
 278
 279 #ifndef HAVE_ATOMIC_MNT_COUNT
 280 static inline unsigned int mnt_get_count(struct vfsmount *mnt)
 281 {
 282 #ifdef CONFIG_SMP
 283         unsigned int count = 0;
 284         int cpu;
 285
 286         for_each_possible_cpu(cpu) {
 287                 count += per_cpu_ptr(mnt->mnt_pcp, cpu)->mnt_count;
 288         }
 289
 290         return count;
 291 #else
 292         return mnt->mnt_count;
 293 #endif
 294 }
 295 #else
 296 # define mnt_get_count(mnt)      cfs_atomic_read(&mnt->mnt_count)
 297 #endif
 298
 299 #ifdef HAVE_STATFS_DENTRY_PARAM
 300 #define ll_do_statfs(sb, sfs) (sb)->s_op->statfs((sb)->s_root, (sfs))
 301 #else
 302 #define ll_do_statfs(sb, sfs) (sb)->s_op->statfs((sb), (sfs))
 303 #endif
 304
 305 #ifdef HAVE_RW_TREE_LOCK
 306 #define TREE_READ_LOCK_IRQ(mapping)     read_lock_irq(&(mapping)->tree_lock)
 307 #define TREE_READ_UNLOCK_IRQ(mapping) read_unlock_irq(&(mapping)->tree_lock)
 308 #else
 309 #define TREE_READ_LOCK_IRQ(mapping) cfs_spin_lock_irq(&(mapping)->tree_lock)
 310 #define TREE_READ_UNLOCK_IRQ(mapping) cfs_spin_unlock_irq(&(mapping)->tree_lock)
 311 #endif
 312
 313 #ifdef HAVE_UNREGISTER_BLKDEV_RETURN_INT
 314 #define ll_unregister_blkdev(a,b)       unregister_blkdev((a),(b))
 315 #else
 316 static inline
 317 int ll_unregister_blkdev(unsigned int dev, const char *name)
 318 {
 319         unregister_blkdev(dev, name);
 320         return 0;
 321 }
 322 #endif
 323
 324 #ifdef HAVE_INVALIDATE_BDEV_2ARG
 325 #define ll_invalidate_bdev(a,b)         invalidate_bdev((a),(b))
 326 #else
 327 #define ll_invalidate_bdev(a,b)         invalidate_bdev((a))
 328 #endif
 329
 330 #ifdef HAVE_INODE_BLKSIZE
 331 #define ll_inode_blksize(a)     (a)->i_blksize
 332 #else
 333 #define ll_inode_blksize(a)     (1<<(a)->i_blkbits)
 334 #endif
 335
 336 #ifdef HAVE_FS_RENAME_DOES_D_MOVE
 337 #define LL_RENAME_DOES_D_MOVE   FS_RENAME_DOES_D_MOVE
 338 #else
 339 #define LL_RENAME_DOES_D_MOVE   FS_ODD_RENAME
 340 #endif
 341
 342 #ifndef HAVE_D_OBTAIN_ALIAS
 343 /* The old d_alloc_anon() didn't free the inode reference on error
 344  * like d_obtain_alias().  Hide that difference/inconvenience here. */
 345 static inline struct dentry *d_obtain_alias(struct inode *inode)
 346 {
 347         struct dentry *anon = d_alloc_anon(inode);
 348
 349         if (anon == NULL) {
 350                 iput(inode);
 351                 anon = ERR_PTR(-ENOMEM);
 352         }
 353
 354         return anon;
 355 }
 356 #endif
 357
 358 /* add a lustre compatible layer for crypto API */
 359 #include <linux/crypto.h>
 360 #ifdef HAVE_ASYNC_BLOCK_CIPHER
 361 #define ll_crypto_hash          crypto_hash
 362 #define ll_crypto_cipher        crypto_blkcipher
 363 #define ll_crypto_alloc_hash(name, type, mask)  crypto_alloc_hash(name, type, mask)
 364 #define ll_crypto_hash_setkey(tfm, key, keylen) crypto_hash_setkey(tfm, key, keylen)
 365 #define ll_crypto_hash_init(desc)               crypto_hash_init(desc)
 366 #define ll_crypto_hash_update(desc, sl, bytes)  crypto_hash_update(desc, sl, bytes)
 367 #define ll_crypto_hash_final(desc, out)         crypto_hash_final(desc, out)
 368 #define ll_crypto_blkcipher_setkey(tfm, key, keylen) \
 369                 crypto_blkcipher_setkey(tfm, key, keylen)
 370 #define ll_crypto_blkcipher_set_iv(tfm, src, len) \
 371                 crypto_blkcipher_set_iv(tfm, src, len)
 372 #define ll_crypto_blkcipher_get_iv(tfm, dst, len) \
 373                 crypto_blkcipher_get_iv(tfm, dst, len)
 374 #define ll_crypto_blkcipher_encrypt(desc, dst, src, bytes) \
 375                 crypto_blkcipher_encrypt(desc, dst, src, bytes)
 376 #define ll_crypto_blkcipher_decrypt(desc, dst, src, bytes) \
 377                 crypto_blkcipher_decrypt(desc, dst, src, bytes)
 378 #define ll_crypto_blkcipher_encrypt_iv(desc, dst, src, bytes) \
 379                 crypto_blkcipher_encrypt_iv(desc, dst, src, bytes)
 380 #define ll_crypto_blkcipher_decrypt_iv(desc, dst, src, bytes) \
 381                 crypto_blkcipher_decrypt_iv(desc, dst, src, bytes)
 382
 383 static inline
 384 struct ll_crypto_cipher *ll_crypto_alloc_blkcipher(const char *name,
 385                                                    u32 type, u32 mask)
 386 {
 387         struct ll_crypto_cipher *rtn = crypto_alloc_blkcipher(name, type, mask);
 388
 389         return (rtn == NULL ? ERR_PTR(-ENOMEM) : rtn);
 390 }
 391
 392 static inline int ll_crypto_hmac(struct ll_crypto_hash *tfm,
 393                                  u8 *key, unsigned int *keylen,
 394                                  struct scatterlist *sg,
 395                                  unsigned int size, u8 *result)
 396 {
 397         struct hash_desc desc;
 398         int              rv;
 399         desc.tfm   = tfm;
 400         desc.flags = 0;
 401         rv = crypto_hash_setkey(desc.tfm, key, *keylen);
 402         if (rv) {
 403                 CERROR("failed to hash setkey: %d\n", rv);
 404                 return rv;
 405         }
 406         return crypto_hash_digest(&desc, sg, size, result);
 407 }
 408 static inline
 409 unsigned int ll_crypto_tfm_alg_max_keysize(struct crypto_blkcipher *tfm)
 410 {
 411         return crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher.max_keysize;
 412 }
 413 static inline
 414 unsigned int ll_crypto_tfm_alg_min_keysize(struct crypto_blkcipher *tfm)
 415 {
 416         return crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher.min_keysize;
 417 }
 418
 419 #define ll_crypto_hash_blocksize(tfm)       crypto_hash_blocksize(tfm)
 420 #define ll_crypto_hash_digestsize(tfm)      crypto_hash_digestsize(tfm)
 421 #define ll_crypto_blkcipher_ivsize(tfm)     crypto_blkcipher_ivsize(tfm)
 422 #define ll_crypto_blkcipher_blocksize(tfm)  crypto_blkcipher_blocksize(tfm)
 423 #define ll_crypto_free_hash(tfm)            crypto_free_hash(tfm)
 424 #define ll_crypto_free_blkcipher(tfm)       crypto_free_blkcipher(tfm)
 425 #else /* HAVE_ASYNC_BLOCK_CIPHER */
 426 #include <linux/scatterlist.h>
 427 #define ll_crypto_hash          crypto_tfm
 428 #define ll_crypto_cipher        crypto_tfm
 429 #ifndef HAVE_STRUCT_HASH_DESC
 430 struct hash_desc {
 431         struct ll_crypto_hash *tfm;
 432         u32                    flags;
 433 };
 434 #endif
 435 #ifndef HAVE_STRUCT_BLKCIPHER_DESC
 436 struct blkcipher_desc {
 437         struct ll_crypto_cipher *tfm;
 438         void                    *info;
 439         u32                      flags;
 440 };
 441 #endif
 442 #define ll_crypto_blkcipher_setkey(tfm, key, keylen) \
 443         crypto_cipher_setkey(tfm, key, keylen)
 444 #define ll_crypto_blkcipher_set_iv(tfm, src, len) \
 445         crypto_cipher_set_iv(tfm, src, len)
 446 #define ll_crypto_blkcipher_get_iv(tfm, dst, len) \
 447         crypto_cipher_get_iv(tfm, dst, len)
 448 #define ll_crypto_blkcipher_encrypt(desc, dst, src, bytes) \
 449         crypto_cipher_encrypt((desc)->tfm, dst, src, bytes)
 450 #define ll_crypto_blkcipher_decrypt(desc, dst, src, bytes) \
 451         crypto_cipher_decrypt((desc)->tfm, dst, src, bytes)
 452 #define ll_crypto_blkcipher_decrypt_iv(desc, dst, src, bytes) \
 453         crypto_cipher_decrypt_iv((desc)->tfm, dst, src, bytes, (desc)->info)
 454 #define ll_crypto_blkcipher_encrypt_iv(desc, dst, src, bytes) \
 455         crypto_cipher_encrypt_iv((desc)->tfm, dst, src, bytes, (desc)->info)
 456
 457 static inline
 458 struct ll_crypto_cipher *ll_crypto_alloc_blkcipher(const char * algname,
 459                                                    u32 type, u32 mask)
 460 {
 461         struct ll_crypto_cipher *rtn;
 462         char                     buf[CRYPTO_MAX_ALG_NAME + 1];
 463         const char              *pan = algname;
 464         u32                      flag = 0;
 465
 466         if (strncmp("cbc(", algname, 4) == 0)
 467                 flag |= CRYPTO_TFM_MODE_CBC;
 468         else if (strncmp("ecb(", algname, 4) == 0)
 469                 flag |= CRYPTO_TFM_MODE_ECB;
 470         if (flag) {
 471                 char *vp = strnchr(algname, CRYPTO_MAX_ALG_NAME, ')');
 472                 if (vp) {
 473                         memcpy(buf, algname + 4, vp - algname - 4);
 474                         buf[vp - algname - 4] = '\0';
 475                         pan = buf;
 476                 } else {
 477                         flag = 0;
 478                 }
 479         }
 480         rtn = crypto_alloc_tfm(pan, flag);
 481         return (rtn == NULL ?  ERR_PTR(-ENOMEM) : rtn);
 482 }
 483
 484 static inline
 485 struct ll_crypto_hash *ll_crypto_alloc_hash(const char *alg, u32 type, u32 mask)
 486 {
 487         char        buf[CRYPTO_MAX_ALG_NAME + 1];
 488         const char *pan = alg;
 489
 490         if (strncmp("hmac(", alg, 5) == 0) {
 491                 char *vp = strnchr(alg, CRYPTO_MAX_ALG_NAME, ')');
 492                 if (vp) {
 493                         memcpy(buf, alg+ 5, vp - alg- 5);
 494                         buf[vp - alg - 5] = 0x00;
 495                         pan = buf;
 496                 }
 497         }
 498         return crypto_alloc_tfm(pan, 0);
 499 }
 500 static inline int ll_crypto_hash_init(struct hash_desc *desc)
 501 {
 502        crypto_digest_init(desc->tfm); return 0;
 503 }
 504 static inline int ll_crypto_hash_update(struct hash_desc *desc,
 505                                         struct scatterlist *sg,
 506                                         unsigned int nbytes)
 507 {
 508         struct scatterlist *sl = sg;
 509         unsigned int        count;
 510                 /*
 511                  * This way is very weakness. We must ensure that
 512                  * the sum of sg[0..i]->length isn't greater than nbytes.
 513                  * In the upstream kernel the crypto_hash_update() also
 514                  * via the nbytes computed the count of sg[...].
 515                  * The old style is more safely. but it gone.
 516                  */
 517         for (count = 0; nbytes > 0; count ++, sl ++) {
 518                 nbytes -= sl->length;
 519         }
 520         crypto_digest_update(desc->tfm, sg, count); return 0;
 521 }
 522 static inline int ll_crypto_hash_final(struct hash_desc *desc, u8 *out)
 523 {
 524         crypto_digest_final(desc->tfm, out); return 0;
 525 }
 526 static inline int ll_crypto_hmac(struct crypto_tfm *tfm,
 527                                  u8 *key, unsigned int *keylen,
 528                                  struct scatterlist *sg,
 529                                  unsigned int nbytes,
 530                                  u8 *out)
 531 {
 532         struct scatterlist *sl = sg;
 533         int                 count;
 534         for (count = 0; nbytes > 0; count ++, sl ++) {
 535                 nbytes -= sl->length;
 536         }
 537         crypto_hmac(tfm, key, keylen, sg, count, out);
 538         return 0;
 539 }
 540
 541 #define ll_crypto_hash_setkey(tfm, key, keylen) crypto_digest_setkey(tfm, key, keylen)
 542 #define ll_crypto_blkcipher_blocksize(tfm)      crypto_tfm_alg_blocksize(tfm)
 543 #define ll_crypto_blkcipher_ivsize(tfm) crypto_tfm_alg_ivsize(tfm)
 544 #define ll_crypto_hash_digestsize(tfm)  crypto_tfm_alg_digestsize(tfm)
 545 #define ll_crypto_hash_blocksize(tfm)   crypto_tfm_alg_blocksize(tfm)
 546 #define ll_crypto_free_hash(tfm)        crypto_free_tfm(tfm)
 547 #define ll_crypto_free_blkcipher(tfm)   crypto_free_tfm(tfm)
 548 #define ll_crypto_tfm_alg_min_keysize   crypto_tfm_alg_min_keysize
 549 #define ll_crypto_tfm_alg_max_keysize   crypto_tfm_alg_max_keysize
 550 #endif /* HAVE_ASYNC_BLOCK_CIPHER */
 551
 552 #ifdef HAVE_FILE_REMOVE_SUID
 553 # define ll_remove_suid(file, mnt)       file_remove_suid(file)
 554 #else
 555 # ifdef HAVE_SECURITY_PLUG
 556 #  define ll_remove_suid(file,mnt)      remove_suid(file->f_dentry,mnt)
 557 # else
 558 #  define ll_remove_suid(file,mnt)      remove_suid(file->f_dentry)
 559 # endif
 560 #endif
 561
 562 #ifdef HAVE_SECURITY_PLUG
 563 #define ll_vfs_rmdir(dir,entry,mnt)             vfs_rmdir(dir,entry,mnt)
 564 #define ll_vfs_mkdir(inode,dir,mnt,mode)        vfs_mkdir(inode,dir,mnt,mode)
 565 #define ll_vfs_link(old,mnt,dir,new,mnt1)       vfs_link(old,mnt,dir,new,mnt1)
 566 #define ll_vfs_unlink(inode,entry,mnt)          vfs_unlink(inode,entry,mnt)
 567 #define ll_vfs_mknod(dir,entry,mnt,mode,dev)            \
 568                 vfs_mknod(dir,entry,mnt,mode,dev)
 569 #define ll_security_inode_unlink(dir,entry,mnt)         \
 570                 security_inode_unlink(dir,entry,mnt)
 571 #define ll_vfs_rename(old,old_dir,mnt,new,new_dir,mnt1) \
 572                 vfs_rename(old,old_dir,mnt,new,new_dir,mnt1)
 573 #else
 574 #define ll_vfs_rmdir(dir,entry,mnt)             vfs_rmdir(dir,entry)
 575 #define ll_vfs_mkdir(inode,dir,mnt,mode)        vfs_mkdir(inode,dir,mode)
 576 #define ll_vfs_link(old,mnt,dir,new,mnt1)       vfs_link(old,dir,new)
 577 #define ll_vfs_unlink(inode,entry,mnt)          vfs_unlink(inode,entry)
 578 #define ll_vfs_mknod(dir,entry,mnt,mode,dev)    vfs_mknod(dir,entry,mode,dev)
 579 #define ll_security_inode_unlink(dir,entry,mnt) security_inode_unlink(dir,entry)
 580 #define ll_vfs_rename(old,old_dir,mnt,new,new_dir,mnt1) \
 581                 vfs_rename(old,old_dir,new,new_dir)
 582 #endif /* HAVE_SECURITY_PLUG */
 583
 584 #ifdef for_each_possible_cpu
 585 #define cfs_for_each_possible_cpu(cpu) for_each_possible_cpu(cpu)
 586 #elif defined(for_each_cpu)
 587 #define cfs_for_each_possible_cpu(cpu) for_each_cpu(cpu)
 588 #endif
 589
 590 #ifdef HAVE_BIO_ENDIO_2ARG
 591 #define cfs_bio_io_error(a,b)   bio_io_error((a))
 592 #define cfs_bio_endio(a,b,c)    bio_endio((a),(c))
 593 #else
 594 #define cfs_bio_io_error(a,b)   bio_io_error((a),(b))
 595 #define cfs_bio_endio(a,b,c)    bio_endio((a),(b),(c))
 596 #endif
 597
 598 #ifdef HAVE_FS_STRUCT_USE_PATH
 599 #define cfs_fs_pwd(fs)       ((fs)->pwd.dentry)
 600 #define cfs_fs_mnt(fs)       ((fs)->pwd.mnt)
 601 #define cfs_path_put(nd)     path_put(&(nd)->path)
 602 #else
 603 #define cfs_fs_pwd(fs)       ((fs)->pwd)
 604 #define cfs_fs_mnt(fs)       ((fs)->pwdmnt)
 605 #define cfs_path_put(nd)     path_release(nd)
 606 #endif
 607
 608 #ifndef abs
 609 static inline int abs(int x)
 610 {
 611         return (x < 0) ? -x : x;
 612 }
 613 #endif
 614
 615 #ifndef labs
 616 static inline long labs(long x)
 617 {
 618         return (x < 0) ? -x : x;
 619 }
 620 #endif /* HAVE_REGISTER_SHRINKER */
 621
 622 #ifdef HAVE_INVALIDATE_INODE_PAGES
 623 #define invalidate_mapping_pages(mapping,s,e) invalidate_inode_pages(mapping)
 624 #endif
 625
 626 #ifndef HAVE_SIMPLE_SETATTR
 627 #define simple_setattr(dentry, ops) inode_setattr((dentry)->d_inode, ops)
 628 #endif
 629
 630 #ifndef SLAB_DESTROY_BY_RCU
 631 #define CFS_SLAB_DESTROY_BY_RCU 0
 632 #else
 633 #define CFS_SLAB_DESTROY_BY_RCU SLAB_DESTROY_BY_RCU
 634 #endif
 635
 636 #ifdef HAVE_SB_HAS_QUOTA_ACTIVE
 637 #define ll_sb_has_quota_active(sb, type) sb_has_quota_active(sb, type)
 638 #else
 639 #define ll_sb_has_quota_active(sb, type) sb_has_quota_enabled(sb, type)
 640 #endif
 641
 642 #ifdef HAVE_SB_ANY_QUOTA_LOADED
 643 #define ll_sb_any_quota_active(sb) sb_any_quota_loaded(sb)
 644 #elif defined(HAVE_SB_ANY_QUOTA_ACTIVE)
 645 #define ll_sb_any_quota_active(sb) sb_any_quota_active(sb)
 646 #else
 647 #define ll_sb_any_quota_active(sb) sb_any_quota_enabled(sb)
 648 #endif
 649
 650 static inline int
 651 ll_quota_on(struct super_block *sb, int off, int ver, char *name, int remount)
 652 {
 653         int rc;
 654
 655         if (sb->s_qcop->quota_on) {
 656 #ifdef HAVE_QUOTA_ON_USE_PATH
 657                 struct path path;
 658
 659                 rc = kern_path(name, LOOKUP_FOLLOW, &path);
 660                 if (!rc)
 661                         return rc;
 662 #endif
 663                 rc = sb->s_qcop->quota_on(sb, off, ver
 664 #ifdef HAVE_QUOTA_ON_USE_PATH
 665                                             , &path
 666 #else
 667                                             , name
 668 #endif
 669 #ifdef HAVE_QUOTA_ON_5ARGS
 670                                             , remount
 671 #endif
 672                                            );
 673 #ifdef HAVE_QUOTA_ON_USE_PATH
 674                 path_put(&path);
 675 #endif
 676                 return rc;
 677         }
 678         else
 679                 return -ENOSYS;
 680 }
 681
 682 static inline int ll_quota_off(struct super_block *sb, int off, int remount)
 683 {
 684         if (sb->s_qcop->quota_off) {
 685                 return sb->s_qcop->quota_off(sb, off
 686 #ifdef HAVE_QUOTA_OFF_3ARGS
 687                                              , remount
 688 #endif
 689                                             );
 690         }
 691         else
 692                 return -ENOSYS;
 693 }
 694
 695 #ifndef HAVE_BLK_QUEUE_LOG_BLK_SIZE /* added in 2.6.31 */
 696 #define blk_queue_logical_block_size(q, sz) blk_queue_hardsect_size(q, sz)
 697 #endif
 698
 699 #ifndef HAVE_VFS_DQ_OFF
 700 # define ll_vfs_dq_init             DQUOT_INIT
 701 # define ll_vfs_dq_drop             DQUOT_DROP
 702 # define ll_vfs_dq_transfer         DQUOT_TRANSFER
 703 # define ll_vfs_dq_off(sb, remount) DQUOT_OFF(sb)
 704 #else
 705 # define ll_vfs_dq_init             vfs_dq_init
 706 # define ll_vfs_dq_drop             vfs_dq_drop
 707 # define ll_vfs_dq_transfer         vfs_dq_transfer
 708 # define ll_vfs_dq_off(sb, remount) vfs_dq_off(sb, remount)
 709 #endif
 710
 711 #ifdef HAVE_BDI_INIT
 712 #define ll_bdi_init(bdi)    bdi_init(bdi)
 713 #define ll_bdi_destroy(bdi) bdi_destroy(bdi)
 714 #else
 715 #define ll_bdi_init(bdi)    0
 716 #define ll_bdi_destroy(bdi) do { } while(0)
 717 #endif
 718
 719 #ifdef HAVE_NEW_BACKING_DEV_INFO
 720 # define ll_bdi_wb_cnt(bdi) ((bdi).wb_cnt)
 721 #else
 722 # define ll_bdi_wb_cnt(bdi) 1
 723 #endif
 724
 725 #ifdef HAVE_BLK_QUEUE_MAX_SECTORS /* removed in rhel6 */
 726 #define blk_queue_max_hw_sectors(q, sect) blk_queue_max_sectors(q, sect)
 727 #endif
 728
 729 #ifndef HAVE_BLKDEV_GET_BY_DEV
 730 # define blkdev_get_by_dev(dev, mode, holder) open_by_devnum(dev, mode)
 731 #endif
 732
 733 #ifndef HAVE_REQUEST_QUEUE_LIMITS
 734 #define queue_max_sectors(rq)             ((rq)->max_sectors)
 735 #define queue_max_hw_sectors(rq)          ((rq)->max_hw_sectors)
 736 #define queue_max_phys_segments(rq)       ((rq)->max_phys_segments)
 737 #define queue_max_hw_segments(rq)         ((rq)->max_hw_segments)
 738 #endif
 739
 740 #ifndef HAVE_BLK_QUEUE_MAX_SEGMENTS
 741 #define blk_queue_max_segments(rq, seg)                      \
 742         do { blk_queue_max_phys_segments(rq, seg);           \
 743              blk_queue_max_hw_segments(rq, seg); } while (0)
 744 #else
 745 #define queue_max_phys_segments(rq)       queue_max_segments(rq)
 746 #define queue_max_hw_segments(rq)         queue_max_segments(rq)
 747 #endif
 748
 749
 750 #ifndef HAVE_BI_HW_SEGMENTS
 751 #define bio_hw_segments(q, bio) 0
 752 #endif
 753
 754 #ifndef HAVE_PAGEVEC_LRU_ADD_FILE
 755 #define pagevec_lru_add_file pagevec_lru_add
 756 #endif
 757
 758 #ifdef HAVE_ADD_TO_PAGE_CACHE_LRU
 759 #define ll_add_to_page_cache_lru(pg, mapping, off, gfp) \
 760         add_to_page_cache_lru(pg, mapping, off, gfp)
 761 #define ll_pagevec_init(pv, cold)       do {} while (0)
 762 #define ll_pagevec_add(pv, pg)          (0)
 763 #define ll_pagevec_lru_add_file(pv)     do {} while (0)
 764 #else
 765 #define ll_add_to_page_cache_lru(pg, mapping, off, gfp) \
 766         add_to_page_cache(pg, mapping, off, gfp)
 767 #define ll_pagevec_init(pv, cold)       pagevec_init(&lru_pvec, cold);
 768 #define ll_pagevec_add(pv, pg)                                  \
 769 ({                                                              \
 770         int __ret;                                              \
 771                                                                 \
 772         page_cache_get(pg);                                     \
 773         __ret = pagevec_add(pv, pg);                            \
 774 })
 775 #define ll_pagevec_lru_add_file(pv)     pagevec_lru_add_file(pv)
 776 #endif
 777
 778 #if !defined(HAVE_NODE_TO_CPUMASK) && defined(HAVE_CPUMASK_OF_NODE)
 779 #define node_to_cpumask(i)         (*(cpumask_of_node(i)))
 780 #define HAVE_NODE_TO_CPUMASK
 781 #endif
 782
 783 #ifndef QUOTA_OK
 784 # define QUOTA_OK 0
 785 #endif
 786 #ifndef NO_QUOTA
 787 # define NO_QUOTA (-EDQUOT)
 788 #endif
 789
 790 #if !defined(_ASM_GENERIC_BITOPS_EXT2_NON_ATOMIC_H_) && !defined(ext2_set_bit)
 791 # define ext2_set_bit             __test_and_set_bit_le
 792 # define ext2_clear_bit           __test_and_clear_bit_le
 793 # define ext2_test_bit            test_bit_le
 794 # define ext2_find_first_zero_bit find_first_zero_bit_le
 795 # define ext2_find_next_zero_bit  find_next_zero_bit_le
 796 #endif
 797
 798 #ifdef ATTR_TIMES_SET
 799 # define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET | ATTR_TIMES_SET)
 800 #else
 801 # define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET)
 802 #endif
 803
 804 #ifndef HAVE_SELINUX_IS_ENABLED
 805 static inline bool selinux_is_enabled(void)
 806 {
 807         return 0;
 808 }
 809 #endif
 810
 811 #endif /* __KERNEL__ */
 812 #endif /* _COMPAT25_H */