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 #ifdef HAVE_FS_STRUCT_RWLOCK
  49 # define LOCK_FS_STRUCT(fs)   cfs_write_lock(&(fs)->lock)
  50 # define UNLOCK_FS_STRUCT(fs) cfs_write_unlock(&(fs)->lock)
  51 #else
  52 # define LOCK_FS_STRUCT(fs)   cfs_spin_lock(&(fs)->lock)
  53 # define UNLOCK_FS_STRUCT(fs) cfs_spin_unlock(&(fs)->lock)
  54 #endif
  55
  56 #ifdef HAVE_FS_STRUCT_USE_PATH
  57 static inline void ll_set_fs_pwd(struct fs_struct *fs, struct vfsmount *mnt,
  58                                  struct dentry *dentry)
  59 {
  60         struct path path;
  61         struct path old_pwd;
  62
  63         path.mnt = mnt;
  64         path.dentry = dentry;
  65         LOCK_FS_STRUCT(fs);
  66         old_pwd = fs->pwd;
  67         path_get(&path);
  68         fs->pwd = path;
  69         UNLOCK_FS_STRUCT(fs);
  70
  71         if (old_pwd.dentry)
  72                 path_put(&old_pwd);
  73 }
  74
  75 #else
  76
  77 static inline void ll_set_fs_pwd(struct fs_struct *fs, struct vfsmount *mnt,
  78                 struct dentry *dentry)
  79 {
  80         struct dentry *old_pwd;
  81         struct vfsmount *old_pwdmnt;
  82
  83         LOCK_FS_STRUCT(fs);
  84         old_pwd = fs->pwd;
  85         old_pwdmnt = fs->pwdmnt;
  86         fs->pwdmnt = mntget(mnt);
  87         fs->pwd = dget(dentry);
  88         UNLOCK_FS_STRUCT(fs);
  89
  90         if (old_pwd) {
  91                 dput(old_pwd);
  92                 mntput(old_pwdmnt);
  93         }
  94 }
  95 #endif
  96
  97 /*
  98  * set ATTR_BLOCKS to a high value to avoid any risk of collision with other
  99  * ATTR_* attributes (see bug 13828)
 100  */
 101 #define ATTR_BLOCKS    (1 << 27)
 102
 103 #define current_ngroups current_cred()->group_info->ngroups
 104 #define current_groups current_cred()->group_info->small_block
 105
 106 /*
 107  * OBD need working random driver, thus all our
 108  * initialization routines must be called after device
 109  * driver initialization
 110  */
 111 #ifndef MODULE
 112 #undef module_init
 113 #define module_init(a)     late_initcall(a)
 114 #endif
 115
 116 #ifndef HAVE_TRYLOCK_PAGE
 117 #define trylock_page(page)              (!TestSetPageLocked(page))
 118 #endif
 119
 120 #define LTIME_S(time)                   (time.tv_sec)
 121
 122 #ifdef HAVE_EXPORT_INODE_PERMISSION
 123 #define ll_permission(inode,mask,nd)    inode_permission(inode,mask)
 124 #else
 125 #define ll_permission(inode,mask,nd)    permission(inode,mask,nd)
 126 #endif
 127
 128 #ifdef HAVE_GENERIC_PERMISSION_2ARGS
 129 # define ll_generic_permission(inode, mask, flags, check_acl) \
 130          generic_permission(inode, mask)
 131 #elif defined HAVE_GENERIC_PERMISSION_4ARGS
 132 # define ll_generic_permission(inode, mask, flags, check_acl) \
 133          generic_permission(inode, mask, flags, check_acl)
 134 #else
 135 # define ll_generic_permission(inode, mask, flags, check_acl) \
 136          generic_permission(inode, mask, check_acl)
 137 #endif
 138
 139 #define ll_pgcache_lock(mapping)          cfs_spin_lock(&mapping->page_lock)
 140 #define ll_pgcache_unlock(mapping)        cfs_spin_unlock(&mapping->page_lock)
 141 #define ll_call_writepage(inode, page)  \
 142                                 (inode)->i_mapping->a_ops->writepage(page, NULL)
 143 #define ll_invalidate_inode_pages(inode) \
 144                                 invalidate_inode_pages((inode)->i_mapping)
 145
 146 #define ll_vfs_create(a,b,c,d)          vfs_create(a,b,c,d)
 147 #define ll_dev_t                        dev_t
 148 #define kdev_t                          dev_t
 149 #define to_kdev_t(dev)                  (dev)
 150 #define kdev_t_to_nr(dev)               (dev)
 151 #define val_to_kdev(dev)                (dev)
 152
 153 #ifdef HAVE_BLKDEV_PUT_2ARGS
 154 #define ll_blkdev_put(a, b) blkdev_put(a, b)
 155 #else
 156 #define ll_blkdev_put(a, b) blkdev_put(a)
 157 #endif
 158
 159 #ifdef HAVE_DENTRY_OPEN_4ARGS
 160 #define ll_dentry_open(a, b, c, d) dentry_open(a, b, c, d)
 161 #else
 162 #define ll_dentry_open(a, b, c, d) dentry_open(a, b, c)
 163 #endif
 164
 165 #include <linux/writeback.h>
 166
 167 static inline int cfs_cleanup_group_info(void)
 168 {
 169         struct group_info *ginfo;
 170
 171         ginfo = groups_alloc(0);
 172         if (!ginfo)
 173                 return -ENOMEM;
 174
 175         set_current_groups(ginfo);
 176         put_group_info(ginfo);
 177
 178         return 0;
 179 }
 180
 181 #define __set_page_ll_data(page, llap) \
 182         do {       \
 183                 page_cache_get(page); \
 184                 SetPagePrivate(page); \
 185                 set_page_private(page, (unsigned long)llap); \
 186         } while (0)
 187 #define __clear_page_ll_data(page) \
 188         do {       \
 189                 ClearPagePrivate(page); \
 190                 set_page_private(page, 0); \
 191                 page_cache_release(page); \
 192         } while(0)
 193
 194 #define kiobuf bio
 195
 196 #include <linux/proc_fs.h>
 197
 198 #define CheckWriteback(page, cmd) \
 199         ((!PageWriteback(page) && (cmd & OBD_BRW_READ)) || \
 200          (PageWriteback(page) && (cmd & OBD_BRW_WRITE)))
 201
 202 #ifdef HAVE_PAGE_LIST
 203 static inline int mapping_has_pages(struct address_space *mapping)
 204 {
 205         int rc = 1;
 206
 207         ll_pgcache_lock(mapping);
 208         if (cfs_list_empty(&mapping->dirty_pages) &&
 209             cfs_list_empty(&mapping->clean_pages) &&
 210             cfs_list_empty(&mapping->locked_pages)) {
 211                 rc = 0;
 212         }
 213         ll_pgcache_unlock(mapping);
 214
 215         return rc;
 216 }
 217 #else
 218 static inline int mapping_has_pages(struct address_space *mapping)
 219 {
 220         return mapping->nrpages > 0;
 221 }
 222 #endif
 223
 224 #ifdef HAVE_KIOBUF_KIO_BLOCKS
 225 #define KIOBUF_GET_BLOCKS(k) ((k)->kio_blocks)
 226 #else
 227 #define KIOBUF_GET_BLOCKS(k) ((k)->blocks)
 228 #endif
 229
 230 #ifdef HAVE_SECURITY_PLUG
 231 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
 232                 vfs_symlink(dir, dentry, mnt, path, mode)
 233 #else
 234 #ifdef HAVE_4ARGS_VFS_SYMLINK
 235 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
 236                 vfs_symlink(dir, dentry, path, mode)
 237 #else
 238 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
 239                        vfs_symlink(dir, dentry, path)
 240 #endif
 241
 242 #endif
 243
 244 #ifndef container_of
 245 #define container_of(ptr, type, member) ({                      \
 246                 const typeof( ((type *)0)->member ) *__mptr = (ptr); \
 247                 (type *)( (char *)__mptr - offsetof(type,member) );})
 248 #endif
 249
 250 #define UP_WRITE_I_ALLOC_SEM(i)   up_write(&(i)->i_alloc_sem)
 251 #define DOWN_WRITE_I_ALLOC_SEM(i) down_write(&(i)->i_alloc_sem)
 252 #define LASSERT_I_ALLOC_SEM_WRITE_LOCKED(i) LASSERT(down_read_trylock(&(i)->i_alloc_sem) == 0)
 253
 254 #define UP_READ_I_ALLOC_SEM(i)    up_read(&(i)->i_alloc_sem)
 255 #define DOWN_READ_I_ALLOC_SEM(i)  down_read(&(i)->i_alloc_sem)
 256 #define LASSERT_I_ALLOC_SEM_READ_LOCKED(i) LASSERT(down_write_trylock(&(i)->i_alloc_sem) == 0)
 257
 258 #include <linux/mpage.h>        /* for generic_writepages */
 259
 260 #ifdef HAVE_HIDE_VFSMOUNT_GUTS
 261 # include <../fs/mount.h>
 262 #else
 263 # define real_mount(mnt)        (mnt)
 264 #endif
 265
 266 static inline const char *mnt_get_devname(struct vfsmount *mnt)
 267 {
 268         return real_mount(mnt)->mnt_devname;
 269 }
 270
 271 #ifndef HAVE_ATOMIC_MNT_COUNT
 272 static inline unsigned int mnt_get_count(struct vfsmount *mnt)
 273 {
 274 #ifdef CONFIG_SMP
 275         unsigned int count = 0;
 276         int cpu;
 277
 278         for_each_possible_cpu(cpu) {
 279                 count += per_cpu_ptr(real_mount(mnt)->mnt_pcp, cpu)->mnt_count;
 280         }
 281
 282         return count;
 283 #else
 284         return real_mount(mnt)->mnt_count;
 285 #endif
 286 }
 287 #else
 288 # define mnt_get_count(mnt)      cfs_atomic_read(&(real_mount(mnt)->mnt_count))
 289 #endif
 290
 291 #ifdef HAVE_RW_TREE_LOCK
 292 #define TREE_READ_LOCK_IRQ(mapping)     read_lock_irq(&(mapping)->tree_lock)
 293 #define TREE_READ_UNLOCK_IRQ(mapping) read_unlock_irq(&(mapping)->tree_lock)
 294 #else
 295 #define TREE_READ_LOCK_IRQ(mapping) cfs_spin_lock_irq(&(mapping)->tree_lock)
 296 #define TREE_READ_UNLOCK_IRQ(mapping) cfs_spin_unlock_irq(&(mapping)->tree_lock)
 297 #endif
 298
 299 #ifdef HAVE_UNREGISTER_BLKDEV_RETURN_INT
 300 #define ll_unregister_blkdev(a,b)       unregister_blkdev((a),(b))
 301 #else
 302 static inline
 303 int ll_unregister_blkdev(unsigned int dev, const char *name)
 304 {
 305         unregister_blkdev(dev, name);
 306         return 0;
 307 }
 308 #endif
 309
 310 #ifdef HAVE_INVALIDATE_BDEV_2ARG
 311 #define ll_invalidate_bdev(a,b)         invalidate_bdev((a),(b))
 312 #else
 313 #define ll_invalidate_bdev(a,b)         invalidate_bdev((a))
 314 #endif
 315
 316 #define ll_inode_blksize(a)     (1<<(a)->i_blkbits)
 317
 318 #ifdef HAVE_FS_RENAME_DOES_D_MOVE
 319 #define LL_RENAME_DOES_D_MOVE   FS_RENAME_DOES_D_MOVE
 320 #else
 321 #define LL_RENAME_DOES_D_MOVE   FS_ODD_RENAME
 322 #endif
 323
 324 #ifndef HAVE_D_OBTAIN_ALIAS
 325 /* The old d_alloc_anon() didn't free the inode reference on error
 326  * like d_obtain_alias().  Hide that difference/inconvenience here. */
 327 static inline struct dentry *d_obtain_alias(struct inode *inode)
 328 {
 329         struct dentry *anon = d_alloc_anon(inode);
 330
 331         if (anon == NULL) {
 332                 iput(inode);
 333                 anon = ERR_PTR(-ENOMEM);
 334         }
 335
 336         return anon;
 337 }
 338 #endif
 339
 340 /* add a lustre compatible layer for crypto API */
 341 #include <linux/crypto.h>
 342 #ifdef HAVE_ASYNC_BLOCK_CIPHER
 343 #define ll_crypto_hash          crypto_hash
 344 #define ll_crypto_cipher        crypto_blkcipher
 345 #define ll_crypto_alloc_hash(name, type, mask)  crypto_alloc_hash(name, type, mask)
 346 #define ll_crypto_hash_setkey(tfm, key, keylen) crypto_hash_setkey(tfm, key, keylen)
 347 #define ll_crypto_hash_init(desc)               crypto_hash_init(desc)
 348 #define ll_crypto_hash_update(desc, sl, bytes)  crypto_hash_update(desc, sl, bytes)
 349 #define ll_crypto_hash_final(desc, out)         crypto_hash_final(desc, out)
 350 #define ll_crypto_blkcipher_setkey(tfm, key, keylen) \
 351                 crypto_blkcipher_setkey(tfm, key, keylen)
 352 #define ll_crypto_blkcipher_set_iv(tfm, src, len) \
 353                 crypto_blkcipher_set_iv(tfm, src, len)
 354 #define ll_crypto_blkcipher_get_iv(tfm, dst, len) \
 355                 crypto_blkcipher_get_iv(tfm, dst, len)
 356 #define ll_crypto_blkcipher_encrypt(desc, dst, src, bytes) \
 357                 crypto_blkcipher_encrypt(desc, dst, src, bytes)
 358 #define ll_crypto_blkcipher_decrypt(desc, dst, src, bytes) \
 359                 crypto_blkcipher_decrypt(desc, dst, src, bytes)
 360 #define ll_crypto_blkcipher_encrypt_iv(desc, dst, src, bytes) \
 361                 crypto_blkcipher_encrypt_iv(desc, dst, src, bytes)
 362 #define ll_crypto_blkcipher_decrypt_iv(desc, dst, src, bytes) \
 363                 crypto_blkcipher_decrypt_iv(desc, dst, src, bytes)
 364
 365 static inline
 366 struct ll_crypto_cipher *ll_crypto_alloc_blkcipher(const char *name,
 367                                                    u32 type, u32 mask)
 368 {
 369         struct ll_crypto_cipher *rtn = crypto_alloc_blkcipher(name, type, mask);
 370
 371         return (rtn == NULL ? ERR_PTR(-ENOMEM) : rtn);
 372 }
 373
 374 static inline int ll_crypto_hmac(struct ll_crypto_hash *tfm,
 375                                  u8 *key, unsigned int *keylen,
 376                                  struct scatterlist *sg,
 377                                  unsigned int size, u8 *result)
 378 {
 379         struct hash_desc desc;
 380         int              rv;
 381         desc.tfm   = tfm;
 382         desc.flags = 0;
 383         rv = crypto_hash_setkey(desc.tfm, key, *keylen);
 384         if (rv) {
 385                 CERROR("failed to hash setkey: %d\n", rv);
 386                 return rv;
 387         }
 388         return crypto_hash_digest(&desc, sg, size, result);
 389 }
 390 static inline
 391 unsigned int ll_crypto_tfm_alg_max_keysize(struct crypto_blkcipher *tfm)
 392 {
 393         return crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher.max_keysize;
 394 }
 395 static inline
 396 unsigned int ll_crypto_tfm_alg_min_keysize(struct crypto_blkcipher *tfm)
 397 {
 398         return crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher.min_keysize;
 399 }
 400
 401 #define ll_crypto_hash_blocksize(tfm)       crypto_hash_blocksize(tfm)
 402 #define ll_crypto_hash_digestsize(tfm)      crypto_hash_digestsize(tfm)
 403 #define ll_crypto_blkcipher_ivsize(tfm)     crypto_blkcipher_ivsize(tfm)
 404 #define ll_crypto_blkcipher_blocksize(tfm)  crypto_blkcipher_blocksize(tfm)
 405 #define ll_crypto_free_hash(tfm)            crypto_free_hash(tfm)
 406 #define ll_crypto_free_blkcipher(tfm)       crypto_free_blkcipher(tfm)
 407 #else /* HAVE_ASYNC_BLOCK_CIPHER */
 408 #include <linux/scatterlist.h>
 409 #define ll_crypto_hash          crypto_tfm
 410 #define ll_crypto_cipher        crypto_tfm
 411 #ifndef HAVE_STRUCT_HASH_DESC
 412 struct hash_desc {
 413         struct ll_crypto_hash *tfm;
 414         u32                    flags;
 415 };
 416 #endif
 417 #ifndef HAVE_STRUCT_BLKCIPHER_DESC
 418 struct blkcipher_desc {
 419         struct ll_crypto_cipher *tfm;
 420         void                    *info;
 421         u32                      flags;
 422 };
 423 #endif
 424 #define ll_crypto_blkcipher_setkey(tfm, key, keylen) \
 425         crypto_cipher_setkey(tfm, key, keylen)
 426 #define ll_crypto_blkcipher_set_iv(tfm, src, len) \
 427         crypto_cipher_set_iv(tfm, src, len)
 428 #define ll_crypto_blkcipher_get_iv(tfm, dst, len) \
 429         crypto_cipher_get_iv(tfm, dst, len)
 430 #define ll_crypto_blkcipher_encrypt(desc, dst, src, bytes) \
 431         crypto_cipher_encrypt((desc)->tfm, dst, src, bytes)
 432 #define ll_crypto_blkcipher_decrypt(desc, dst, src, bytes) \
 433         crypto_cipher_decrypt((desc)->tfm, dst, src, bytes)
 434 #define ll_crypto_blkcipher_decrypt_iv(desc, dst, src, bytes) \
 435         crypto_cipher_decrypt_iv((desc)->tfm, dst, src, bytes, (desc)->info)
 436 #define ll_crypto_blkcipher_encrypt_iv(desc, dst, src, bytes) \
 437         crypto_cipher_encrypt_iv((desc)->tfm, dst, src, bytes, (desc)->info)
 438
 439 static inline
 440 struct ll_crypto_cipher *ll_crypto_alloc_blkcipher(const char * algname,
 441                                                    u32 type, u32 mask)
 442 {
 443         struct ll_crypto_cipher *rtn;
 444         char                     buf[CRYPTO_MAX_ALG_NAME + 1];
 445         const char              *pan = algname;
 446         u32                      flag = 0;
 447
 448         if (strncmp("cbc(", algname, 4) == 0)
 449                 flag |= CRYPTO_TFM_MODE_CBC;
 450         else if (strncmp("ecb(", algname, 4) == 0)
 451                 flag |= CRYPTO_TFM_MODE_ECB;
 452         if (flag) {
 453                 char *vp = strnchr(algname, CRYPTO_MAX_ALG_NAME, ')');
 454                 if (vp) {
 455                         memcpy(buf, algname + 4, vp - algname - 4);
 456                         buf[vp - algname - 4] = '\0';
 457                         pan = buf;
 458                 } else {
 459                         flag = 0;
 460                 }
 461         }
 462         rtn = crypto_alloc_tfm(pan, flag);
 463         return (rtn == NULL ?  ERR_PTR(-ENOMEM) : rtn);
 464 }
 465
 466 static inline
 467 struct ll_crypto_hash *ll_crypto_alloc_hash(const char *alg, u32 type, u32 mask)
 468 {
 469         char        buf[CRYPTO_MAX_ALG_NAME + 1];
 470         const char *pan = alg;
 471
 472         if (strncmp("hmac(", alg, 5) == 0) {
 473                 char *vp = strnchr(alg, CRYPTO_MAX_ALG_NAME, ')');
 474                 if (vp) {
 475                         memcpy(buf, alg+ 5, vp - alg- 5);
 476                         buf[vp - alg - 5] = 0x00;
 477                         pan = buf;
 478                 }
 479         }
 480         return crypto_alloc_tfm(pan, 0);
 481 }
 482 static inline int ll_crypto_hash_init(struct hash_desc *desc)
 483 {
 484        crypto_digest_init(desc->tfm); return 0;
 485 }
 486 static inline int ll_crypto_hash_update(struct hash_desc *desc,
 487                                         struct scatterlist *sg,
 488                                         unsigned int nbytes)
 489 {
 490         struct scatterlist *sl = sg;
 491         unsigned int        count;
 492                 /*
 493                  * This way is very weakness. We must ensure that
 494                  * the sum of sg[0..i]->length isn't greater than nbytes.
 495                  * In the upstream kernel the crypto_hash_update() also
 496                  * via the nbytes computed the count of sg[...].
 497                  * The old style is more safely. but it gone.
 498                  */
 499         for (count = 0; nbytes > 0; count ++, sl ++) {
 500                 nbytes -= sl->length;
 501         }
 502         crypto_digest_update(desc->tfm, sg, count); return 0;
 503 }
 504 static inline int ll_crypto_hash_final(struct hash_desc *desc, u8 *out)
 505 {
 506         crypto_digest_final(desc->tfm, out); return 0;
 507 }
 508 static inline int ll_crypto_hmac(struct crypto_tfm *tfm,
 509                                  u8 *key, unsigned int *keylen,
 510                                  struct scatterlist *sg,
 511                                  unsigned int nbytes,
 512                                  u8 *out)
 513 {
 514         struct scatterlist *sl = sg;
 515         int                 count;
 516         for (count = 0; nbytes > 0; count ++, sl ++) {
 517                 nbytes -= sl->length;
 518         }
 519         crypto_hmac(tfm, key, keylen, sg, count, out);
 520         return 0;
 521 }
 522
 523 #define ll_crypto_hash_setkey(tfm, key, keylen) crypto_digest_setkey(tfm, key, keylen)
 524 #define ll_crypto_blkcipher_blocksize(tfm)      crypto_tfm_alg_blocksize(tfm)
 525 #define ll_crypto_blkcipher_ivsize(tfm) crypto_tfm_alg_ivsize(tfm)
 526 #define ll_crypto_hash_digestsize(tfm)  crypto_tfm_alg_digestsize(tfm)
 527 #define ll_crypto_hash_blocksize(tfm)   crypto_tfm_alg_blocksize(tfm)
 528 #define ll_crypto_free_hash(tfm)        crypto_free_tfm(tfm)
 529 #define ll_crypto_free_blkcipher(tfm)   crypto_free_tfm(tfm)
 530 #define ll_crypto_tfm_alg_min_keysize   crypto_tfm_alg_min_keysize
 531 #define ll_crypto_tfm_alg_max_keysize   crypto_tfm_alg_max_keysize
 532 #endif /* HAVE_ASYNC_BLOCK_CIPHER */
 533
 534 #ifdef HAVE_SECURITY_PLUG
 535 #define ll_vfs_rmdir(dir,entry,mnt)             vfs_rmdir(dir,entry,mnt)
 536 #define ll_vfs_mkdir(inode,dir,mnt,mode)        vfs_mkdir(inode,dir,mnt,mode)
 537 #define ll_vfs_link(old,mnt,dir,new,mnt1)       vfs_link(old,mnt,dir,new,mnt1)
 538 #define ll_vfs_unlink(inode,entry,mnt)          vfs_unlink(inode,entry,mnt)
 539 #define ll_vfs_mknod(dir,entry,mnt,mode,dev)            \
 540                 vfs_mknod(dir,entry,mnt,mode,dev)
 541 #define ll_security_inode_unlink(dir,entry,mnt)         \
 542                 security_inode_unlink(dir,entry,mnt)
 543 #define ll_vfs_rename(old,old_dir,mnt,new,new_dir,mnt1) \
 544                 vfs_rename(old,old_dir,mnt,new,new_dir,mnt1)
 545 #else
 546 #define ll_vfs_rmdir(dir,entry,mnt)             vfs_rmdir(dir,entry)
 547 #define ll_vfs_mkdir(inode,dir,mnt,mode)        vfs_mkdir(inode,dir,mode)
 548 #define ll_vfs_link(old,mnt,dir,new,mnt1)       vfs_link(old,dir,new)
 549 #define ll_vfs_unlink(inode,entry,mnt)          vfs_unlink(inode,entry)
 550 #define ll_vfs_mknod(dir,entry,mnt,mode,dev)    vfs_mknod(dir,entry,mode,dev)
 551 #define ll_security_inode_unlink(dir,entry,mnt) security_inode_unlink(dir,entry)
 552 #define ll_vfs_rename(old,old_dir,mnt,new,new_dir,mnt1) \
 553                 vfs_rename(old,old_dir,new,new_dir)
 554 #endif /* HAVE_SECURITY_PLUG */
 555
 556 #ifdef for_each_possible_cpu
 557 #define cfs_for_each_possible_cpu(cpu) for_each_possible_cpu(cpu)
 558 #elif defined(for_each_cpu)
 559 #define cfs_for_each_possible_cpu(cpu) for_each_cpu(cpu)
 560 #endif
 561
 562 #ifdef HAVE_BIO_ENDIO_2ARG
 563 #define cfs_bio_io_error(a,b)   bio_io_error((a))
 564 #define cfs_bio_endio(a,b,c)    bio_endio((a),(c))
 565 #else
 566 #define cfs_bio_io_error(a,b)   bio_io_error((a),(b))
 567 #define cfs_bio_endio(a,b,c)    bio_endio((a),(b),(c))
 568 #endif
 569
 570 #ifdef HAVE_FS_STRUCT_USE_PATH
 571 #define cfs_fs_pwd(fs)       ((fs)->pwd.dentry)
 572 #define cfs_fs_mnt(fs)       ((fs)->pwd.mnt)
 573 #define cfs_path_put(nd)     path_put(&(nd)->path)
 574 #else
 575 #define cfs_fs_pwd(fs)       ((fs)->pwd)
 576 #define cfs_fs_mnt(fs)       ((fs)->pwdmnt)
 577 #define cfs_path_put(nd)     path_release(nd)
 578 #endif
 579
 580 #ifndef HAVE_SIMPLE_SETATTR
 581 #define simple_setattr(dentry, ops) inode_setattr((dentry)->d_inode, ops)
 582 #endif
 583
 584 #ifndef SLAB_DESTROY_BY_RCU
 585 #define SLAB_DESTROY_BY_RCU 0
 586 #endif
 587
 588 #ifndef HAVE_SB_HAS_QUOTA_ACTIVE
 589 #define sb_has_quota_active(sb, type) sb_has_quota_enabled(sb, type)
 590 #endif
 591
 592 #ifndef HAVE_SB_ANY_QUOTA_LOADED
 593 # ifdef HAVE_SB_ANY_QUOTA_ACTIVE
 594 # define sb_any_quota_loaded(sb) sb_any_quota_active(sb)
 595 # else
 596 # define sb_any_quota_loaded(sb) sb_any_quota_enabled(sb)
 597 # endif
 598 #endif
 599
 600 static inline int
 601 ll_quota_on(struct super_block *sb, int off, int ver, char *name, int remount)
 602 {
 603         int rc;
 604
 605         if (sb->s_qcop->quota_on) {
 606 #ifdef HAVE_QUOTA_ON_USE_PATH
 607                 struct path path;
 608
 609                 rc = kern_path(name, LOOKUP_FOLLOW, &path);
 610                 if (!rc)
 611                         return rc;
 612 #endif
 613                 rc = sb->s_qcop->quota_on(sb, off, ver
 614 #ifdef HAVE_QUOTA_ON_USE_PATH
 615                                             , &path
 616 #else
 617                                             , name
 618 #endif
 619 #ifdef HAVE_QUOTA_ON_5ARGS
 620                                             , remount
 621 #endif
 622                                            );
 623 #ifdef HAVE_QUOTA_ON_USE_PATH
 624                 path_put(&path);
 625 #endif
 626                 return rc;
 627         }
 628         else
 629                 return -ENOSYS;
 630 }
 631
 632 static inline int ll_quota_off(struct super_block *sb, int off, int remount)
 633 {
 634         if (sb->s_qcop->quota_off) {
 635                 return sb->s_qcop->quota_off(sb, off
 636 #ifdef HAVE_QUOTA_OFF_3ARGS
 637                                              , remount
 638 #endif
 639                                             );
 640         }
 641         else
 642                 return -ENOSYS;
 643 }
 644
 645 #ifndef HAVE_BLK_QUEUE_LOG_BLK_SIZE /* added in 2.6.31 */
 646 #define blk_queue_logical_block_size(q, sz) blk_queue_hardsect_size(q, sz)
 647 #endif
 648
 649 #ifndef HAVE_VFS_DQ_OFF
 650 # define ll_vfs_dq_init             DQUOT_INIT
 651 # define ll_vfs_dq_drop             DQUOT_DROP
 652 # define ll_vfs_dq_transfer         DQUOT_TRANSFER
 653 # define ll_vfs_dq_off(sb, remount) DQUOT_OFF(sb)
 654 #else
 655 # define ll_vfs_dq_init             vfs_dq_init
 656 # define ll_vfs_dq_drop             vfs_dq_drop
 657 # define ll_vfs_dq_transfer         vfs_dq_transfer
 658 # define ll_vfs_dq_off(sb, remount) vfs_dq_off(sb, remount)
 659 #endif
 660
 661 #ifdef HAVE_BDI_INIT
 662 #define ll_bdi_init(bdi)    bdi_init(bdi)
 663 #define ll_bdi_destroy(bdi) bdi_destroy(bdi)
 664 #else
 665 #define ll_bdi_init(bdi)    0
 666 #define ll_bdi_destroy(bdi) do { } while(0)
 667 #endif
 668
 669 #ifdef HAVE_NEW_BACKING_DEV_INFO
 670 # define ll_bdi_wb_cnt(bdi) ((bdi).wb_cnt)
 671 #else
 672 # define ll_bdi_wb_cnt(bdi) 1
 673 #endif
 674
 675 #ifdef HAVE_BLK_QUEUE_MAX_SECTORS /* removed in rhel6 */
 676 #define blk_queue_max_hw_sectors(q, sect) blk_queue_max_sectors(q, sect)
 677 #endif
 678
 679 #ifndef HAVE_BLKDEV_GET_BY_DEV
 680 # define blkdev_get_by_dev(dev, mode, holder) open_by_devnum(dev, mode)
 681 #endif
 682
 683 #ifndef HAVE_REQUEST_QUEUE_LIMITS
 684 #define queue_max_sectors(rq)             ((rq)->max_sectors)
 685 #define queue_max_hw_sectors(rq)          ((rq)->max_hw_sectors)
 686 #define queue_max_phys_segments(rq)       ((rq)->max_phys_segments)
 687 #define queue_max_hw_segments(rq)         ((rq)->max_hw_segments)
 688 #endif
 689
 690 #ifndef HAVE_BLK_QUEUE_MAX_SEGMENTS
 691 #define blk_queue_max_segments(rq, seg)                      \
 692         do { blk_queue_max_phys_segments(rq, seg);           \
 693              blk_queue_max_hw_segments(rq, seg); } while (0)
 694 #else
 695 #define queue_max_phys_segments(rq)       queue_max_segments(rq)
 696 #define queue_max_hw_segments(rq)         queue_max_segments(rq)
 697 #endif
 698
 699
 700 #ifndef HAVE_BI_HW_SEGMENTS
 701 #define bio_hw_segments(q, bio) 0
 702 #endif
 703
 704 #ifndef HAVE_PAGEVEC_LRU_ADD_FILE
 705 #define pagevec_lru_add_file pagevec_lru_add
 706 #endif
 707
 708 #ifdef HAVE_ADD_TO_PAGE_CACHE_LRU
 709 #define ll_add_to_page_cache_lru(pg, mapping, off, gfp) \
 710         add_to_page_cache_lru(pg, mapping, off, gfp)
 711 #define ll_pagevec_init(pv, cold)       do {} while (0)
 712 #define ll_pagevec_add(pv, pg)          (0)
 713 #define ll_pagevec_lru_add_file(pv)     do {} while (0)
 714 #else
 715 #define ll_add_to_page_cache_lru(pg, mapping, off, gfp) \
 716         add_to_page_cache(pg, mapping, off, gfp)
 717 #define ll_pagevec_init(pv, cold)       pagevec_init(&lru_pvec, cold);
 718 #define ll_pagevec_add(pv, pg)                                  \
 719 ({                                                              \
 720         int __ret;                                              \
 721                                                                 \
 722         page_cache_get(pg);                                     \
 723         __ret = pagevec_add(pv, pg);                            \
 724 })
 725 #define ll_pagevec_lru_add_file(pv)     pagevec_lru_add_file(pv)
 726 #endif
 727
 728 #if !defined(HAVE_NODE_TO_CPUMASK) && defined(HAVE_CPUMASK_OF_NODE)
 729 #define node_to_cpumask(i)         (*(cpumask_of_node(i)))
 730 #define HAVE_NODE_TO_CPUMASK
 731 #endif
 732
 733 #ifndef QUOTA_OK
 734 # define QUOTA_OK 0
 735 #endif
 736 #ifndef NO_QUOTA
 737 # define NO_QUOTA (-EDQUOT)
 738 #endif
 739
 740 #if !defined(_ASM_GENERIC_BITOPS_EXT2_NON_ATOMIC_H_) && !defined(ext2_set_bit)
 741 # define ext2_set_bit             __test_and_set_bit_le
 742 # define ext2_clear_bit           __test_and_clear_bit_le
 743 # define ext2_test_bit            test_bit_le
 744 # define ext2_find_first_zero_bit find_first_zero_bit_le
 745 # define ext2_find_next_zero_bit  find_next_zero_bit_le
 746 #endif
 747
 748 #ifdef ATTR_TIMES_SET
 749 # define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET | ATTR_TIMES_SET)
 750 #else
 751 # define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET)
 752 #endif
 753
 754 #ifndef HAVE_SELINUX_IS_ENABLED
 755 static inline bool selinux_is_enabled(void)
 756 {
 757         return 0;
 758 }
 759 #endif
 760
 761 #endif /* __KERNEL__ */
 762 #endif /* _COMPAT25_H */