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_2ARGS
 151 # define ll_generic_permission(inode, mask, flags, check_acl) \
 152          generic_permission(inode, mask)
 153 #elif defined HAVE_GENERIC_PERMISSION_4ARGS
 154 # define ll_generic_permission(inode, mask, flags, check_acl) \
 155          generic_permission(inode, mask, flags, check_acl)
 156 #else
 157 # define ll_generic_permission(inode, mask, flags, check_acl) \
 158          generic_permission(inode, mask, check_acl)
 159 #endif
 160
 161 #define ll_pgcache_lock(mapping)          cfs_spin_lock(&mapping->page_lock)
 162 #define ll_pgcache_unlock(mapping)        cfs_spin_unlock(&mapping->page_lock)
 163 #define ll_call_writepage(inode, page)  \
 164                                 (inode)->i_mapping->a_ops->writepage(page, NULL)
 165 #define ll_invalidate_inode_pages(inode) \
 166                                 invalidate_inode_pages((inode)->i_mapping)
 167
 168 #define ll_vfs_create(a,b,c,d)          vfs_create(a,b,c,d)
 169 #define ll_dev_t                        dev_t
 170 #define kdev_t                          dev_t
 171 #define to_kdev_t(dev)                  (dev)
 172 #define kdev_t_to_nr(dev)               (dev)
 173 #define val_to_kdev(dev)                (dev)
 174
 175 #ifdef HAVE_BLKDEV_PUT_2ARGS
 176 #define ll_blkdev_put(a, b) blkdev_put(a, b)
 177 #else
 178 #define ll_blkdev_put(a, b) blkdev_put(a)
 179 #endif
 180
 181 #ifdef HAVE_DENTRY_OPEN_4ARGS
 182 #define ll_dentry_open(a, b, c, d) dentry_open(a, b, c, d)
 183 #else
 184 #define ll_dentry_open(a, b, c, d) dentry_open(a, b, c)
 185 #endif
 186
 187 #include <linux/writeback.h>
 188
 189 static inline int cfs_cleanup_group_info(void)
 190 {
 191         struct group_info *ginfo;
 192
 193         ginfo = groups_alloc(0);
 194         if (!ginfo)
 195                 return -ENOMEM;
 196
 197         set_current_groups(ginfo);
 198         put_group_info(ginfo);
 199
 200         return 0;
 201 }
 202
 203 #define __set_page_ll_data(page, llap) \
 204         do {       \
 205                 page_cache_get(page); \
 206                 SetPagePrivate(page); \
 207                 set_page_private(page, (unsigned long)llap); \
 208         } while (0)
 209 #define __clear_page_ll_data(page) \
 210         do {       \
 211                 ClearPagePrivate(page); \
 212                 set_page_private(page, 0); \
 213                 page_cache_release(page); \
 214         } while(0)
 215
 216 #define kiobuf bio
 217
 218 #include <linux/proc_fs.h>
 219
 220 #define CheckWriteback(page, cmd) \
 221         ((!PageWriteback(page) && (cmd & OBD_BRW_READ)) || \
 222          (PageWriteback(page) && (cmd & OBD_BRW_WRITE)))
 223
 224 #ifdef HAVE_PAGE_LIST
 225 static inline int mapping_has_pages(struct address_space *mapping)
 226 {
 227         int rc = 1;
 228
 229         ll_pgcache_lock(mapping);
 230         if (cfs_list_empty(&mapping->dirty_pages) &&
 231             cfs_list_empty(&mapping->clean_pages) &&
 232             cfs_list_empty(&mapping->locked_pages)) {
 233                 rc = 0;
 234         }
 235         ll_pgcache_unlock(mapping);
 236
 237         return rc;
 238 }
 239 #else
 240 static inline int mapping_has_pages(struct address_space *mapping)
 241 {
 242         return mapping->nrpages > 0;
 243 }
 244 #endif
 245
 246 #ifdef HAVE_KIOBUF_KIO_BLOCKS
 247 #define KIOBUF_GET_BLOCKS(k) ((k)->kio_blocks)
 248 #else
 249 #define KIOBUF_GET_BLOCKS(k) ((k)->blocks)
 250 #endif
 251
 252 #ifdef HAVE_SECURITY_PLUG
 253 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
 254                 vfs_symlink(dir, dentry, mnt, path, mode)
 255 #else
 256 #ifdef HAVE_4ARGS_VFS_SYMLINK
 257 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
 258                 vfs_symlink(dir, dentry, path, mode)
 259 #else
 260 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
 261                        vfs_symlink(dir, dentry, path)
 262 #endif
 263
 264 #endif
 265
 266 #ifndef container_of
 267 #define container_of(ptr, type, member) ({                      \
 268                 const typeof( ((type *)0)->member ) *__mptr = (ptr); \
 269                 (type *)( (char *)__mptr - offsetof(type,member) );})
 270 #endif
 271
 272 #define UP_WRITE_I_ALLOC_SEM(i)   up_write(&(i)->i_alloc_sem)
 273 #define DOWN_WRITE_I_ALLOC_SEM(i) down_write(&(i)->i_alloc_sem)
 274 #define LASSERT_I_ALLOC_SEM_WRITE_LOCKED(i) LASSERT(down_read_trylock(&(i)->i_alloc_sem) == 0)
 275
 276 #define UP_READ_I_ALLOC_SEM(i)    up_read(&(i)->i_alloc_sem)
 277 #define DOWN_READ_I_ALLOC_SEM(i)  down_read(&(i)->i_alloc_sem)
 278 #define LASSERT_I_ALLOC_SEM_READ_LOCKED(i) LASSERT(down_write_trylock(&(i)->i_alloc_sem) == 0)
 279
 280 #include <linux/mpage.h>        /* for generic_writepages */
 281
 282 #ifdef HAVE_HIDE_VFSMOUNT_GUTS
 283 # include <../fs/mount.h>
 284 #else
 285 # define real_mount(mnt)        (mnt)
 286 #endif
 287
 288 static inline const char *mnt_get_devname(struct vfsmount *mnt)
 289 {
 290         return real_mount(mnt)->mnt_devname;
 291 }
 292
 293 #ifndef HAVE_ATOMIC_MNT_COUNT
 294 static inline unsigned int mnt_get_count(struct vfsmount *mnt)
 295 {
 296 #ifdef CONFIG_SMP
 297         unsigned int count = 0;
 298         int cpu;
 299
 300         for_each_possible_cpu(cpu) {
 301                 count += per_cpu_ptr(real_mount(mnt)->mnt_pcp, cpu)->mnt_count;
 302         }
 303
 304         return count;
 305 #else
 306         return real_mount(mnt)->mnt_count;
 307 #endif
 308 }
 309 #else
 310 # define mnt_get_count(mnt)      cfs_atomic_read(&(real_mount(mnt)->mnt_count))
 311 #endif
 312
 313 #ifdef HAVE_RW_TREE_LOCK
 314 #define TREE_READ_LOCK_IRQ(mapping)     read_lock_irq(&(mapping)->tree_lock)
 315 #define TREE_READ_UNLOCK_IRQ(mapping) read_unlock_irq(&(mapping)->tree_lock)
 316 #else
 317 #define TREE_READ_LOCK_IRQ(mapping) cfs_spin_lock_irq(&(mapping)->tree_lock)
 318 #define TREE_READ_UNLOCK_IRQ(mapping) cfs_spin_unlock_irq(&(mapping)->tree_lock)
 319 #endif
 320
 321 #ifdef HAVE_UNREGISTER_BLKDEV_RETURN_INT
 322 #define ll_unregister_blkdev(a,b)       unregister_blkdev((a),(b))
 323 #else
 324 static inline
 325 int ll_unregister_blkdev(unsigned int dev, const char *name)
 326 {
 327         unregister_blkdev(dev, name);
 328         return 0;
 329 }
 330 #endif
 331
 332 #ifdef HAVE_INVALIDATE_BDEV_2ARG
 333 #define ll_invalidate_bdev(a,b)         invalidate_bdev((a),(b))
 334 #else
 335 #define ll_invalidate_bdev(a,b)         invalidate_bdev((a))
 336 #endif
 337
 338 #define ll_inode_blksize(a)     (1<<(a)->i_blkbits)
 339
 340 #ifdef HAVE_FS_RENAME_DOES_D_MOVE
 341 #define LL_RENAME_DOES_D_MOVE   FS_RENAME_DOES_D_MOVE
 342 #else
 343 #define LL_RENAME_DOES_D_MOVE   FS_ODD_RENAME
 344 #endif
 345
 346 #ifndef HAVE_D_OBTAIN_ALIAS
 347 /* The old d_alloc_anon() didn't free the inode reference on error
 348  * like d_obtain_alias().  Hide that difference/inconvenience here. */
 349 static inline struct dentry *d_obtain_alias(struct inode *inode)
 350 {
 351         struct dentry *anon = d_alloc_anon(inode);
 352
 353         if (anon == NULL) {
 354                 iput(inode);
 355                 anon = ERR_PTR(-ENOMEM);
 356         }
 357
 358         return anon;
 359 }
 360 #endif
 361
 362 /* add a lustre compatible layer for crypto API */
 363 #include <linux/crypto.h>
 364 #ifdef HAVE_ASYNC_BLOCK_CIPHER
 365 #define ll_crypto_hash          crypto_hash
 366 #define ll_crypto_cipher        crypto_blkcipher
 367 #define ll_crypto_alloc_hash(name, type, mask)  crypto_alloc_hash(name, type, mask)
 368 #define ll_crypto_hash_setkey(tfm, key, keylen) crypto_hash_setkey(tfm, key, keylen)
 369 #define ll_crypto_hash_init(desc)               crypto_hash_init(desc)
 370 #define ll_crypto_hash_update(desc, sl, bytes)  crypto_hash_update(desc, sl, bytes)
 371 #define ll_crypto_hash_final(desc, out)         crypto_hash_final(desc, out)
 372 #define ll_crypto_blkcipher_setkey(tfm, key, keylen) \
 373                 crypto_blkcipher_setkey(tfm, key, keylen)
 374 #define ll_crypto_blkcipher_set_iv(tfm, src, len) \
 375                 crypto_blkcipher_set_iv(tfm, src, len)
 376 #define ll_crypto_blkcipher_get_iv(tfm, dst, len) \
 377                 crypto_blkcipher_get_iv(tfm, dst, len)
 378 #define ll_crypto_blkcipher_encrypt(desc, dst, src, bytes) \
 379                 crypto_blkcipher_encrypt(desc, dst, src, bytes)
 380 #define ll_crypto_blkcipher_decrypt(desc, dst, src, bytes) \
 381                 crypto_blkcipher_decrypt(desc, dst, src, bytes)
 382 #define ll_crypto_blkcipher_encrypt_iv(desc, dst, src, bytes) \
 383                 crypto_blkcipher_encrypt_iv(desc, dst, src, bytes)
 384 #define ll_crypto_blkcipher_decrypt_iv(desc, dst, src, bytes) \
 385                 crypto_blkcipher_decrypt_iv(desc, dst, src, bytes)
 386
 387 static inline
 388 struct ll_crypto_cipher *ll_crypto_alloc_blkcipher(const char *name,
 389                                                    u32 type, u32 mask)
 390 {
 391         struct ll_crypto_cipher *rtn = crypto_alloc_blkcipher(name, type, mask);
 392
 393         return (rtn == NULL ? ERR_PTR(-ENOMEM) : rtn);
 394 }
 395
 396 static inline int ll_crypto_hmac(struct ll_crypto_hash *tfm,
 397                                  u8 *key, unsigned int *keylen,
 398                                  struct scatterlist *sg,
 399                                  unsigned int size, u8 *result)
 400 {
 401         struct hash_desc desc;
 402         int              rv;
 403         desc.tfm   = tfm;
 404         desc.flags = 0;
 405         rv = crypto_hash_setkey(desc.tfm, key, *keylen);
 406         if (rv) {
 407                 CERROR("failed to hash setkey: %d\n", rv);
 408                 return rv;
 409         }
 410         return crypto_hash_digest(&desc, sg, size, result);
 411 }
 412 static inline
 413 unsigned int ll_crypto_tfm_alg_max_keysize(struct crypto_blkcipher *tfm)
 414 {
 415         return crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher.max_keysize;
 416 }
 417 static inline
 418 unsigned int ll_crypto_tfm_alg_min_keysize(struct crypto_blkcipher *tfm)
 419 {
 420         return crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher.min_keysize;
 421 }
 422
 423 #define ll_crypto_hash_blocksize(tfm)       crypto_hash_blocksize(tfm)
 424 #define ll_crypto_hash_digestsize(tfm)      crypto_hash_digestsize(tfm)
 425 #define ll_crypto_blkcipher_ivsize(tfm)     crypto_blkcipher_ivsize(tfm)
 426 #define ll_crypto_blkcipher_blocksize(tfm)  crypto_blkcipher_blocksize(tfm)
 427 #define ll_crypto_free_hash(tfm)            crypto_free_hash(tfm)
 428 #define ll_crypto_free_blkcipher(tfm)       crypto_free_blkcipher(tfm)
 429 #else /* HAVE_ASYNC_BLOCK_CIPHER */
 430 #include <linux/scatterlist.h>
 431 #define ll_crypto_hash          crypto_tfm
 432 #define ll_crypto_cipher        crypto_tfm
 433 #ifndef HAVE_STRUCT_HASH_DESC
 434 struct hash_desc {
 435         struct ll_crypto_hash *tfm;
 436         u32                    flags;
 437 };
 438 #endif
 439 #ifndef HAVE_STRUCT_BLKCIPHER_DESC
 440 struct blkcipher_desc {
 441         struct ll_crypto_cipher *tfm;
 442         void                    *info;
 443         u32                      flags;
 444 };
 445 #endif
 446 #define ll_crypto_blkcipher_setkey(tfm, key, keylen) \
 447         crypto_cipher_setkey(tfm, key, keylen)
 448 #define ll_crypto_blkcipher_set_iv(tfm, src, len) \
 449         crypto_cipher_set_iv(tfm, src, len)
 450 #define ll_crypto_blkcipher_get_iv(tfm, dst, len) \
 451         crypto_cipher_get_iv(tfm, dst, len)
 452 #define ll_crypto_blkcipher_encrypt(desc, dst, src, bytes) \
 453         crypto_cipher_encrypt((desc)->tfm, dst, src, bytes)
 454 #define ll_crypto_blkcipher_decrypt(desc, dst, src, bytes) \
 455         crypto_cipher_decrypt((desc)->tfm, dst, src, bytes)
 456 #define ll_crypto_blkcipher_decrypt_iv(desc, dst, src, bytes) \
 457         crypto_cipher_decrypt_iv((desc)->tfm, dst, src, bytes, (desc)->info)
 458 #define ll_crypto_blkcipher_encrypt_iv(desc, dst, src, bytes) \
 459         crypto_cipher_encrypt_iv((desc)->tfm, dst, src, bytes, (desc)->info)
 460
 461 static inline
 462 struct ll_crypto_cipher *ll_crypto_alloc_blkcipher(const char * algname,
 463                                                    u32 type, u32 mask)
 464 {
 465         struct ll_crypto_cipher *rtn;
 466         char                     buf[CRYPTO_MAX_ALG_NAME + 1];
 467         const char              *pan = algname;
 468         u32                      flag = 0;
 469
 470         if (strncmp("cbc(", algname, 4) == 0)
 471                 flag |= CRYPTO_TFM_MODE_CBC;
 472         else if (strncmp("ecb(", algname, 4) == 0)
 473                 flag |= CRYPTO_TFM_MODE_ECB;
 474         if (flag) {
 475                 char *vp = strnchr(algname, CRYPTO_MAX_ALG_NAME, ')');
 476                 if (vp) {
 477                         memcpy(buf, algname + 4, vp - algname - 4);
 478                         buf[vp - algname - 4] = '\0';
 479                         pan = buf;
 480                 } else {
 481                         flag = 0;
 482                 }
 483         }
 484         rtn = crypto_alloc_tfm(pan, flag);
 485         return (rtn == NULL ?  ERR_PTR(-ENOMEM) : rtn);
 486 }
 487
 488 static inline
 489 struct ll_crypto_hash *ll_crypto_alloc_hash(const char *alg, u32 type, u32 mask)
 490 {
 491         char        buf[CRYPTO_MAX_ALG_NAME + 1];
 492         const char *pan = alg;
 493
 494         if (strncmp("hmac(", alg, 5) == 0) {
 495                 char *vp = strnchr(alg, CRYPTO_MAX_ALG_NAME, ')');
 496                 if (vp) {
 497                         memcpy(buf, alg+ 5, vp - alg- 5);
 498                         buf[vp - alg - 5] = 0x00;
 499                         pan = buf;
 500                 }
 501         }
 502         return crypto_alloc_tfm(pan, 0);
 503 }
 504 static inline int ll_crypto_hash_init(struct hash_desc *desc)
 505 {
 506        crypto_digest_init(desc->tfm); return 0;
 507 }
 508 static inline int ll_crypto_hash_update(struct hash_desc *desc,
 509                                         struct scatterlist *sg,
 510                                         unsigned int nbytes)
 511 {
 512         struct scatterlist *sl = sg;
 513         unsigned int        count;
 514                 /*
 515                  * This way is very weakness. We must ensure that
 516                  * the sum of sg[0..i]->length isn't greater than nbytes.
 517                  * In the upstream kernel the crypto_hash_update() also
 518                  * via the nbytes computed the count of sg[...].
 519                  * The old style is more safely. but it gone.
 520                  */
 521         for (count = 0; nbytes > 0; count ++, sl ++) {
 522                 nbytes -= sl->length;
 523         }
 524         crypto_digest_update(desc->tfm, sg, count); return 0;
 525 }
 526 static inline int ll_crypto_hash_final(struct hash_desc *desc, u8 *out)
 527 {
 528         crypto_digest_final(desc->tfm, out); return 0;
 529 }
 530 static inline int ll_crypto_hmac(struct crypto_tfm *tfm,
 531                                  u8 *key, unsigned int *keylen,
 532                                  struct scatterlist *sg,
 533                                  unsigned int nbytes,
 534                                  u8 *out)
 535 {
 536         struct scatterlist *sl = sg;
 537         int                 count;
 538         for (count = 0; nbytes > 0; count ++, sl ++) {
 539                 nbytes -= sl->length;
 540         }
 541         crypto_hmac(tfm, key, keylen, sg, count, out);
 542         return 0;
 543 }
 544
 545 #define ll_crypto_hash_setkey(tfm, key, keylen) crypto_digest_setkey(tfm, key, keylen)
 546 #define ll_crypto_blkcipher_blocksize(tfm)      crypto_tfm_alg_blocksize(tfm)
 547 #define ll_crypto_blkcipher_ivsize(tfm) crypto_tfm_alg_ivsize(tfm)
 548 #define ll_crypto_hash_digestsize(tfm)  crypto_tfm_alg_digestsize(tfm)
 549 #define ll_crypto_hash_blocksize(tfm)   crypto_tfm_alg_blocksize(tfm)
 550 #define ll_crypto_free_hash(tfm)        crypto_free_tfm(tfm)
 551 #define ll_crypto_free_blkcipher(tfm)   crypto_free_tfm(tfm)
 552 #define ll_crypto_tfm_alg_min_keysize   crypto_tfm_alg_min_keysize
 553 #define ll_crypto_tfm_alg_max_keysize   crypto_tfm_alg_max_keysize
 554 #endif /* HAVE_ASYNC_BLOCK_CIPHER */
 555
 556 #ifdef HAVE_SECURITY_PLUG
 557 #define ll_vfs_rmdir(dir,entry,mnt)             vfs_rmdir(dir,entry,mnt)
 558 #define ll_vfs_mkdir(inode,dir,mnt,mode)        vfs_mkdir(inode,dir,mnt,mode)
 559 #define ll_vfs_link(old,mnt,dir,new,mnt1)       vfs_link(old,mnt,dir,new,mnt1)
 560 #define ll_vfs_unlink(inode,entry,mnt)          vfs_unlink(inode,entry,mnt)
 561 #define ll_vfs_mknod(dir,entry,mnt,mode,dev)            \
 562                 vfs_mknod(dir,entry,mnt,mode,dev)
 563 #define ll_security_inode_unlink(dir,entry,mnt)         \
 564                 security_inode_unlink(dir,entry,mnt)
 565 #define ll_vfs_rename(old,old_dir,mnt,new,new_dir,mnt1) \
 566                 vfs_rename(old,old_dir,mnt,new,new_dir,mnt1)
 567 #else
 568 #define ll_vfs_rmdir(dir,entry,mnt)             vfs_rmdir(dir,entry)
 569 #define ll_vfs_mkdir(inode,dir,mnt,mode)        vfs_mkdir(inode,dir,mode)
 570 #define ll_vfs_link(old,mnt,dir,new,mnt1)       vfs_link(old,dir,new)
 571 #define ll_vfs_unlink(inode,entry,mnt)          vfs_unlink(inode,entry)
 572 #define ll_vfs_mknod(dir,entry,mnt,mode,dev)    vfs_mknod(dir,entry,mode,dev)
 573 #define ll_security_inode_unlink(dir,entry,mnt) security_inode_unlink(dir,entry)
 574 #define ll_vfs_rename(old,old_dir,mnt,new,new_dir,mnt1) \
 575                 vfs_rename(old,old_dir,new,new_dir)
 576 #endif /* HAVE_SECURITY_PLUG */
 577
 578 #ifdef for_each_possible_cpu
 579 #define cfs_for_each_possible_cpu(cpu) for_each_possible_cpu(cpu)
 580 #elif defined(for_each_cpu)
 581 #define cfs_for_each_possible_cpu(cpu) for_each_cpu(cpu)
 582 #endif
 583
 584 #ifdef HAVE_BIO_ENDIO_2ARG
 585 #define cfs_bio_io_error(a,b)   bio_io_error((a))
 586 #define cfs_bio_endio(a,b,c)    bio_endio((a),(c))
 587 #else
 588 #define cfs_bio_io_error(a,b)   bio_io_error((a),(b))
 589 #define cfs_bio_endio(a,b,c)    bio_endio((a),(b),(c))
 590 #endif
 591
 592 #ifdef HAVE_FS_STRUCT_USE_PATH
 593 #define cfs_fs_pwd(fs)       ((fs)->pwd.dentry)
 594 #define cfs_fs_mnt(fs)       ((fs)->pwd.mnt)
 595 #define cfs_path_put(nd)     path_put(&(nd)->path)
 596 #else
 597 #define cfs_fs_pwd(fs)       ((fs)->pwd)
 598 #define cfs_fs_mnt(fs)       ((fs)->pwdmnt)
 599 #define cfs_path_put(nd)     path_release(nd)
 600 #endif
 601
 602 #ifndef HAVE_SIMPLE_SETATTR
 603 #define simple_setattr(dentry, ops) inode_setattr((dentry)->d_inode, ops)
 604 #endif
 605
 606 #ifndef SLAB_DESTROY_BY_RCU
 607 #define SLAB_DESTROY_BY_RCU 0
 608 #endif
 609
 610 #ifndef HAVE_SB_HAS_QUOTA_ACTIVE
 611 #define sb_has_quota_active(sb, type) sb_has_quota_enabled(sb, type)
 612 #endif
 613
 614 #ifndef HAVE_SB_ANY_QUOTA_LOADED
 615 # ifdef HAVE_SB_ANY_QUOTA_ACTIVE
 616 # define sb_any_quota_loaded(sb) sb_any_quota_active(sb)
 617 # else
 618 # define sb_any_quota_loaded(sb) sb_any_quota_enabled(sb)
 619 # endif
 620 #endif
 621
 622 static inline int
 623 ll_quota_on(struct super_block *sb, int off, int ver, char *name, int remount)
 624 {
 625         int rc;
 626
 627         if (sb->s_qcop->quota_on) {
 628 #ifdef HAVE_QUOTA_ON_USE_PATH
 629                 struct path path;
 630
 631                 rc = kern_path(name, LOOKUP_FOLLOW, &path);
 632                 if (!rc)
 633                         return rc;
 634 #endif
 635                 rc = sb->s_qcop->quota_on(sb, off, ver
 636 #ifdef HAVE_QUOTA_ON_USE_PATH
 637                                             , &path
 638 #else
 639                                             , name
 640 #endif
 641 #ifdef HAVE_QUOTA_ON_5ARGS
 642                                             , remount
 643 #endif
 644                                            );
 645 #ifdef HAVE_QUOTA_ON_USE_PATH
 646                 path_put(&path);
 647 #endif
 648                 return rc;
 649         }
 650         else
 651                 return -ENOSYS;
 652 }
 653
 654 static inline int ll_quota_off(struct super_block *sb, int off, int remount)
 655 {
 656         if (sb->s_qcop->quota_off) {
 657                 return sb->s_qcop->quota_off(sb, off
 658 #ifdef HAVE_QUOTA_OFF_3ARGS
 659                                              , remount
 660 #endif
 661                                             );
 662         }
 663         else
 664                 return -ENOSYS;
 665 }
 666
 667 #ifndef HAVE_BLK_QUEUE_LOG_BLK_SIZE /* added in 2.6.31 */
 668 #define blk_queue_logical_block_size(q, sz) blk_queue_hardsect_size(q, sz)
 669 #endif
 670
 671 #ifndef HAVE_VFS_DQ_OFF
 672 # define ll_vfs_dq_init             DQUOT_INIT
 673 # define ll_vfs_dq_drop             DQUOT_DROP
 674 # define ll_vfs_dq_transfer         DQUOT_TRANSFER
 675 # define ll_vfs_dq_off(sb, remount) DQUOT_OFF(sb)
 676 #else
 677 # define ll_vfs_dq_init             vfs_dq_init
 678 # define ll_vfs_dq_drop             vfs_dq_drop
 679 # define ll_vfs_dq_transfer         vfs_dq_transfer
 680 # define ll_vfs_dq_off(sb, remount) vfs_dq_off(sb, remount)
 681 #endif
 682
 683 #ifdef HAVE_BDI_INIT
 684 #define ll_bdi_init(bdi)    bdi_init(bdi)
 685 #define ll_bdi_destroy(bdi) bdi_destroy(bdi)
 686 #else
 687 #define ll_bdi_init(bdi)    0
 688 #define ll_bdi_destroy(bdi) do { } while(0)
 689 #endif
 690
 691 #ifdef HAVE_NEW_BACKING_DEV_INFO
 692 # define ll_bdi_wb_cnt(bdi) ((bdi).wb_cnt)
 693 #else
 694 # define ll_bdi_wb_cnt(bdi) 1
 695 #endif
 696
 697 #ifdef HAVE_BLK_QUEUE_MAX_SECTORS /* removed in rhel6 */
 698 #define blk_queue_max_hw_sectors(q, sect) blk_queue_max_sectors(q, sect)
 699 #endif
 700
 701 #ifndef HAVE_BLKDEV_GET_BY_DEV
 702 # define blkdev_get_by_dev(dev, mode, holder) open_by_devnum(dev, mode)
 703 #endif
 704
 705 #ifndef HAVE_REQUEST_QUEUE_LIMITS
 706 #define queue_max_sectors(rq)             ((rq)->max_sectors)
 707 #define queue_max_hw_sectors(rq)          ((rq)->max_hw_sectors)
 708 #define queue_max_phys_segments(rq)       ((rq)->max_phys_segments)
 709 #define queue_max_hw_segments(rq)         ((rq)->max_hw_segments)
 710 #endif
 711
 712 #ifndef HAVE_BLK_QUEUE_MAX_SEGMENTS
 713 #define blk_queue_max_segments(rq, seg)                      \
 714         do { blk_queue_max_phys_segments(rq, seg);           \
 715              blk_queue_max_hw_segments(rq, seg); } while (0)
 716 #else
 717 #define queue_max_phys_segments(rq)       queue_max_segments(rq)
 718 #define queue_max_hw_segments(rq)         queue_max_segments(rq)
 719 #endif
 720
 721
 722 #ifndef HAVE_BI_HW_SEGMENTS
 723 #define bio_hw_segments(q, bio) 0
 724 #endif
 725
 726 #ifndef HAVE_PAGEVEC_LRU_ADD_FILE
 727 #define pagevec_lru_add_file pagevec_lru_add
 728 #endif
 729
 730 #ifdef HAVE_ADD_TO_PAGE_CACHE_LRU
 731 #define ll_add_to_page_cache_lru(pg, mapping, off, gfp) \
 732         add_to_page_cache_lru(pg, mapping, off, gfp)
 733 #define ll_pagevec_init(pv, cold)       do {} while (0)
 734 #define ll_pagevec_add(pv, pg)          (0)
 735 #define ll_pagevec_lru_add_file(pv)     do {} while (0)
 736 #else
 737 #define ll_add_to_page_cache_lru(pg, mapping, off, gfp) \
 738         add_to_page_cache(pg, mapping, off, gfp)
 739 #define ll_pagevec_init(pv, cold)       pagevec_init(&lru_pvec, cold);
 740 #define ll_pagevec_add(pv, pg)                                  \
 741 ({                                                              \
 742         int __ret;                                              \
 743                                                                 \
 744         page_cache_get(pg);                                     \
 745         __ret = pagevec_add(pv, pg);                            \
 746 })
 747 #define ll_pagevec_lru_add_file(pv)     pagevec_lru_add_file(pv)
 748 #endif
 749
 750 #if !defined(HAVE_NODE_TO_CPUMASK) && defined(HAVE_CPUMASK_OF_NODE)
 751 #define node_to_cpumask(i)         (*(cpumask_of_node(i)))
 752 #define HAVE_NODE_TO_CPUMASK
 753 #endif
 754
 755 #ifndef QUOTA_OK
 756 # define QUOTA_OK 0
 757 #endif
 758 #ifndef NO_QUOTA
 759 # define NO_QUOTA (-EDQUOT)
 760 #endif
 761
 762 #if !defined(_ASM_GENERIC_BITOPS_EXT2_NON_ATOMIC_H_) && !defined(ext2_set_bit)
 763 # define ext2_set_bit             __test_and_set_bit_le
 764 # define ext2_clear_bit           __test_and_clear_bit_le
 765 # define ext2_test_bit            test_bit_le
 766 # define ext2_find_first_zero_bit find_first_zero_bit_le
 767 # define ext2_find_next_zero_bit  find_next_zero_bit_le
 768 #endif
 769
 770 #ifdef ATTR_TIMES_SET
 771 # define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET | ATTR_TIMES_SET)
 772 #else
 773 # define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET)
 774 #endif
 775
 776 #ifndef HAVE_SELINUX_IS_ENABLED
 777 static inline bool selinux_is_enabled(void)
 778 {
 779         return 0;
 780 }
 781 #endif
 782
 783 #endif /* __KERNEL__ */
 784 #endif /* _COMPAT25_H */