/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- * vim:expandtab:shiftwidth=8:tabstop=8: * * GPL HEADER START * * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 only, * as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License version 2 for more details (a copy is included * in the LICENSE file that accompanied this code). * * You should have received a copy of the GNU General Public License * version 2 along with this program; If not, see * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf * * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * * GPL HEADER END */ /* * Copyright 2008 Sun Microsystems, Inc. All rights reserved * Use is subject to license terms. */ /* * This file is part of Lustre, http://www.lustre.org/ * Lustre is a trademark of Sun Microsystems, Inc. */ #ifndef _LINUX_COMPAT25_H #define _LINUX_COMPAT25_H #ifdef __KERNEL__ #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,9) #error sorry, lustre requires at least linux kernel 2.6.9 or later #endif #include #include #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,14) struct ll_iattr { struct iattr iattr; unsigned int ia_attr_flags; }; #else #define ll_iattr iattr #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,14) */ #ifndef HAVE_SET_FS_PWD static inline void ll_set_fs_pwd(struct fs_struct *fs, struct vfsmount *mnt, struct dentry *dentry) { struct dentry *old_pwd; struct vfsmount *old_pwdmnt; write_lock(&fs->lock); old_pwd = fs->pwd; old_pwdmnt = fs->pwdmnt; fs->pwdmnt = mntget(mnt); fs->pwd = dget(dentry); write_unlock(&fs->lock); if (old_pwd) { dput(old_pwd); mntput(old_pwdmnt); } } #else #define ll_set_fs_pwd set_fs_pwd #endif /* HAVE_SET_FS_PWD */ /* * set ATTR_BLOCKS to a high value to avoid any risk of collision with other * ATTR_* attributes (see bug 13828) */ #define ATTR_BLOCKS (1 << 27) #if HAVE_INODE_I_MUTEX #define UNLOCK_INODE_MUTEX(inode) do {mutex_unlock(&(inode)->i_mutex); } while(0) #define LOCK_INODE_MUTEX(inode) do {mutex_lock(&(inode)->i_mutex); } while(0) #define TRYLOCK_INODE_MUTEX(inode) mutex_trylock(&(inode)->i_mutex) #else #define UNLOCK_INODE_MUTEX(inode) do {up(&(inode)->i_sem); } while(0) #define LOCK_INODE_MUTEX(inode) do {down(&(inode)->i_sem); } while(0) #define TRYLOCK_INODE_MUTEX(inode) (!down_trylock(&(inode)->i_sem)) #endif /* HAVE_INODE_I_MUTEX */ #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,15) #define d_child d_u.d_child #define d_rcu d_u.d_rcu #endif #ifdef HAVE_DQUOTOFF_MUTEX #define UNLOCK_DQONOFF_MUTEX(dqopt) do {mutex_unlock(&(dqopt)->dqonoff_mutex); } while(0) #define LOCK_DQONOFF_MUTEX(dqopt) do {mutex_lock(&(dqopt)->dqonoff_mutex); } while(0) #else #define UNLOCK_DQONOFF_MUTEX(dqopt) do {up(&(dqopt)->dqonoff_sem); } while(0) #define LOCK_DQONOFF_MUTEX(dqopt) do {down(&(dqopt)->dqonoff_sem); } while(0) #endif /* HAVE_DQUOTOFF_MUTEX */ #define current_ngroups current->group_info->ngroups #define current_groups current->group_info->small_block #ifndef page_private #define page_private(page) ((page)->private) #define set_page_private(page, v) ((page)->private = (v)) #endif #ifndef HAVE_GFP_T #define gfp_t int #endif #define lock_dentry(___dentry) spin_lock(&(___dentry)->d_lock) #define unlock_dentry(___dentry) spin_unlock(&(___dentry)->d_lock) #define ll_kernel_locked() kernel_locked() /* * OBD need working random driver, thus all our * initialization routines must be called after device * driver initialization */ #ifndef MODULE #undef module_init #define module_init(a) late_initcall(a) #endif /* XXX our code should be using the 2.6 calls, not the other way around */ #define TryLockPage(page) TestSetPageLocked(page) #define Page_Uptodate(page) PageUptodate(page) #define ll_redirty_page(page) set_page_dirty(page) #define KDEVT_INIT(val) (val) #define LTIME_S(time) (time.tv_sec) #define ll_path_lookup path_lookup #define ll_permission(inode,mask,nd) permission(inode,mask,nd) #define ll_pgcache_lock(mapping) spin_lock(&mapping->page_lock) #define ll_pgcache_unlock(mapping) spin_unlock(&mapping->page_lock) #define ll_call_writepage(inode, page) \ (inode)->i_mapping->a_ops->writepage(page, NULL) #define ll_invalidate_inode_pages(inode) \ invalidate_inode_pages((inode)->i_mapping) #define ll_truncate_complete_page(page) \ truncate_complete_page(page->mapping, page) #define ll_vfs_create(a,b,c,d) vfs_create(a,b,c,d) #define ll_dev_t dev_t #define kdev_t dev_t #define to_kdev_t(dev) (dev) #define kdev_t_to_nr(dev) (dev) #define val_to_kdev(dev) (dev) #define ILOOKUP(sb, ino, test, data) ilookup5(sb, ino, test, data); #include static inline int cleanup_group_info(void) { struct group_info *ginfo; ginfo = groups_alloc(0); if (!ginfo) return -ENOMEM; set_current_groups(ginfo); put_group_info(ginfo); return 0; } #define __set_page_ll_data(page, llap) \ do { \ page_cache_get(page); \ SetPagePrivate(page); \ set_page_private(page, (unsigned long)llap); \ } while (0) #define __clear_page_ll_data(page) \ do { \ ClearPagePrivate(page); \ set_page_private(page, 0); \ page_cache_release(page); \ } while(0) #define kiobuf bio #include #if !defined(HAVE_D_REHASH_COND) && defined(HAVE___D_REHASH) #define d_rehash_cond(dentry, lock) __d_rehash(dentry, lock) extern void __d_rehash(struct dentry *dentry, int lock); #endif #if !defined(HAVE_D_MOVE_LOCKED) && defined(HAVE___D_MOVE) #define d_move_locked(dentry, target) __d_move(dentry, target) extern void __d_move(struct dentry *dentry, struct dentry *target); #endif #ifdef HAVE_CAN_SLEEP_ARG #define ll_flock_lock_file_wait(file, lock, can_sleep) \ flock_lock_file_wait(file, lock, can_sleep) #else #define ll_flock_lock_file_wait(file, lock, can_sleep) \ flock_lock_file_wait(file, lock) #endif #define CheckWriteback(page, cmd) \ ((!PageWriteback(page) && (cmd & OBD_BRW_READ)) || \ (PageWriteback(page) && (cmd & OBD_BRW_WRITE))) #ifdef HAVE_PAGE_LIST static inline int mapping_has_pages(struct address_space *mapping) { int rc = 1; ll_pgcache_lock(mapping); if (list_empty(&mapping->dirty_pages) && list_empty(&mapping->clean_pages) && list_empty(&mapping->locked_pages)) { rc = 0; } ll_pgcache_unlock(mapping); return rc; } #else static inline int mapping_has_pages(struct address_space *mapping) { return mapping->nrpages > 0; } #endif #ifdef HAVE_KIOBUF_KIO_BLOCKS #define KIOBUF_GET_BLOCKS(k) ((k)->kio_blocks) #else #define KIOBUF_GET_BLOCKS(k) ((k)->blocks) #endif #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,7)) #define ll_set_dflags(dentry, flags) do { dentry->d_vfs_flags |= flags; } while(0) #define ll_vfs_symlink(dir, dentry, path, mode) vfs_symlink(dir, dentry, path) #else #define ll_set_dflags(dentry, flags) do { \ spin_lock(&dentry->d_lock); \ dentry->d_flags |= flags; \ spin_unlock(&dentry->d_lock); \ } while(0) #ifdef HAVE_SECURITY_PLUG #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \ vfs_symlink(dir, dentry, mnt, path, mode) #else #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \ vfs_symlink(dir, dentry, path, mode) #endif #endif #ifndef container_of #define container_of(ptr, type, member) ({ \ const typeof( ((type *)0)->member ) *__mptr = (ptr); \ (type *)( (char *)__mptr - offsetof(type,member) );}) #endif #ifdef HAVE_I_ALLOC_SEM #define UP_WRITE_I_ALLOC_SEM(i) do { up_write(&(i)->i_alloc_sem); } while (0) #define DOWN_WRITE_I_ALLOC_SEM(i) do { down_write(&(i)->i_alloc_sem); } while(0) #define LASSERT_I_ALLOC_SEM_WRITE_LOCKED(i) LASSERT(down_read_trylock(&(i)->i_alloc_sem) == 0) #define UP_READ_I_ALLOC_SEM(i) do { up_read(&(i)->i_alloc_sem); } while (0) #define DOWN_READ_I_ALLOC_SEM(i) do { down_read(&(i)->i_alloc_sem); } while (0) #define LASSERT_I_ALLOC_SEM_READ_LOCKED(i) LASSERT(down_write_trylock(&(i)->i_alloc_sem) == 0) #else #define UP_READ_I_ALLOC_SEM(i) do { } while (0) #define DOWN_READ_I_ALLOC_SEM(i) do { } while (0) #define LASSERT_I_ALLOC_SEM_READ_LOCKED(i) do { } while (0) #define UP_WRITE_I_ALLOC_SEM(i) do { } while (0) #define DOWN_WRITE_I_ALLOC_SEM(i) do { } while (0) #define LASSERT_I_ALLOC_SEM_WRITE_LOCKED(i) do { } while (0) #endif #ifndef HAVE_GRAB_CACHE_PAGE_NOWAIT_GFP #define grab_cache_page_nowait_gfp(x, y, z) grab_cache_page_nowait((x), (y)) #endif #ifndef HAVE_FILEMAP_FDATAWRITE #define filemap_fdatawrite(mapping) filemap_fdatasync(mapping) #endif #ifdef HAVE_VFS_KERN_MOUNT static inline struct vfsmount * ll_kern_mount(const char *fstype, int flags, const char *name, void *data) { struct file_system_type *type = get_fs_type(fstype); struct vfsmount *mnt; if (!type) return ERR_PTR(-ENODEV); mnt = vfs_kern_mount(type, flags, name, data); module_put(type->owner); return mnt; } #else #define ll_kern_mount(fstype, flags, name, data) do_kern_mount((fstype), (flags), (name), (data)) #endif #ifndef HAVE_GENERIC_FILE_READ static inline ssize_t generic_file_read(struct file *filp, char __user *buf, size_t len, loff_t *ppos) { struct iovec iov = { .iov_base = (void __user *)buf, .iov_len = len }; struct kiocb kiocb; ssize_t ret; init_sync_kiocb(&kiocb, filp); kiocb.ki_pos = *ppos; kiocb.ki_left = len; ret = generic_file_aio_read(&kiocb, &iov, 1, kiocb.ki_pos); *ppos = kiocb.ki_pos; return ret; } #endif #ifndef HAVE_GENERIC_FILE_WRITE static inline ssize_t generic_file_write(struct file *filp, const char __user *buf, size_t len, loff_t *ppos) { struct iovec iov = { .iov_base = (void __user *)buf, .iov_len = len }; struct kiocb kiocb; ssize_t ret; init_sync_kiocb(&kiocb, filp); kiocb.ki_pos = *ppos; kiocb.ki_left = len; ret = generic_file_aio_write(&kiocb, &iov, 1, kiocb.ki_pos); *ppos = kiocb.ki_pos; return ret; } #endif #ifdef HAVE_STATFS_DENTRY_PARAM #define ll_do_statfs(sb, sfs) (sb)->s_op->statfs((sb)->s_root, (sfs)) #else #define ll_do_statfs(sb, sfs) (sb)->s_op->statfs((sb), (sfs)) #endif /* task_struct */ #ifndef HAVE_TASK_PPTR #define p_pptr parent #endif #ifndef HAVE_SB_TIME_GRAN #ifndef HAVE_S_TIME_GRAN #error Need s_time_gran patch! #endif static inline u32 get_sb_time_gran(struct super_block *sb) { return sb->s_time_gran; } #endif #ifdef HAVE_RW_TREE_LOCK #define TREE_READ_LOCK_IRQ(mapping) read_lock_irq(&(mapping)->tree_lock) #define TREE_READ_UNLOCK_IRQ(mapping) read_unlock_irq(&(mapping)->tree_lock) #else #define TREE_READ_LOCK_IRQ(mapping) spin_lock_irq(&(mapping)->tree_lock) #define TREE_READ_UNLOCK_IRQ(mapping) spin_unlock_irq(&(mapping)->tree_lock) #endif #ifdef HAVE_UNREGISTER_BLKDEV_RETURN_INT #define ll_unregister_blkdev(a,b) unregister_blkdev((a),(b)) #else static inline int ll_unregister_blkdev(unsigned int dev, const char *name) { unregister_blkdev(dev, name); return 0; } #endif #ifdef HAVE_INVALIDATE_BDEV_2ARG #define ll_invalidate_bdev(a,b) invalidate_bdev((a),(b)) #else #define ll_invalidate_bdev(a,b) invalidate_bdev((a)) #endif #ifdef HAVE_INODE_BLKSIZE #define ll_inode_blksize(a) (a)->i_blksize #else #define ll_inode_blksize(a) (1<<(a)->i_blkbits) #endif #ifdef HAVE_FS_RENAME_DOES_D_MOVE #define LL_RENAME_DOES_D_MOVE FS_RENAME_DOES_D_MOVE #else #define LL_RENAME_DOES_D_MOVE FS_ODD_RENAME #endif /* add a lustre compatible layer for crypto API */ #include #ifdef HAVE_ASYNC_BLOCK_CIPHER #define ll_crypto_hash crypto_hash #define ll_crypto_cipher crypto_blkcipher #define ll_crypto_alloc_hash(name, type, mask) crypto_alloc_hash(name, type, mask) #define ll_crypto_hash_setkey(tfm, key, keylen) crypto_hash_setkey(tfm, key, keylen) #define ll_crypto_hash_init(desc) crypto_hash_init(desc) #define ll_crypto_hash_update(desc, sl, bytes) crypto_hash_update(desc, sl, bytes) #define ll_crypto_hash_final(desc, out) crypto_hash_final(desc, out) #define ll_crypto_alloc_blkcipher(name, type, mask) \ crypto_alloc_blkcipher(name ,type, mask) #define ll_crypto_blkcipher_setkey(tfm, key, keylen) \ crypto_blkcipher_setkey(tfm, key, keylen) #define ll_crypto_blkcipher_set_iv(tfm, src, len) \ crypto_blkcipher_set_iv(tfm, src, len) #define ll_crypto_blkcipher_get_iv(tfm, dst, len) \ crypto_blkcipher_get_iv(tfm, dst, len) #define ll_crypto_blkcipher_encrypt(desc, dst, src, bytes) \ crypto_blkcipher_encrypt(desc, dst, src, bytes) #define ll_crypto_blkcipher_decrypt(desc, dst, src, bytes) \ crypto_blkcipher_decrypt(desc, dst, src, bytes) #define ll_crypto_blkcipher_encrypt_iv(desc, dst, src, bytes) \ crypto_blkcipher_encrypt_iv(desc, dst, src, bytes) #define ll_crypto_blkcipher_decrypt_iv(desc, dst, src, bytes) \ crypto_blkcipher_decrypt_iv(desc, dst, src, bytes) static inline int ll_crypto_hmac(struct ll_crypto_hash *tfm, u8 *key, unsigned int *keylen, struct scatterlist *sg, unsigned int size, u8 *result) { struct hash_desc desc; int rv; desc.tfm = tfm; desc.flags = 0; rv = crypto_hash_setkey(desc.tfm, key, *keylen); if (rv) { CERROR("failed to hash setkey: %d\n", rv); return rv; } return crypto_hash_digest(&desc, sg, size, result); } static inline unsigned int crypto_tfm_alg_max_keysize(struct crypto_blkcipher *tfm) { return crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher.max_keysize; } static inline unsigned int crypto_tfm_alg_min_keysize(struct crypto_blkcipher *tfm) { return crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher.min_keysize; } #define ll_crypto_hash_blocksize(tfm) crypto_hash_blocksize(tfm) #define ll_crypto_hash_digestsize(tfm) crypto_hash_digestsize(tfm) #define ll_crypto_blkcipher_ivsize(tfm) crypto_blkcipher_ivsize(tfm) #define ll_crypto_blkcipher_blocksize(tfm) crypto_blkcipher_blocksize(tfm) #define ll_crypto_free_hash(tfm) crypto_free_hash(tfm) #define ll_crypto_free_blkcipher(tfm) crypto_free_blkcipher(tfm) #else /* HAVE_ASYNC_BLOCK_CIPHER */ #include #define ll_crypto_hash crypto_tfm #define ll_crypto_cipher crypto_tfm struct hash_desc { struct ll_crypto_hash *tfm; u32 flags; }; struct blkcipher_desc { struct ll_crypto_cipher *tfm; void *info; u32 flags; }; #define ll_crypto_blkcipher_setkey(tfm, key, keylen) \ crypto_cipher_setkey(tfm, key, keylen) #define ll_crypto_blkcipher_set_iv(tfm, src, len) \ crypto_cipher_set_iv(tfm, src, len) #define ll_crypto_blkcipher_get_iv(tfm, dst, len) \ crypto_cipher_get_iv(tfm, dst, len) #define ll_crypto_blkcipher_encrypt(desc, dst, src, bytes) \ crypto_cipher_encrypt((desc)->tfm, dst, src, bytes) #define ll_crypto_blkcipher_decrypt(desc, dst, src, bytes) \ crypto_cipher_decrypt((desc)->tfm, dst, src, bytes) #define ll_crypto_blkcipher_decrypt_iv(desc, dst, src, bytes) \ crypto_cipher_decrypt_iv((desc)->tfm, dst, src, bytes, (desc)->info) #define ll_crypto_blkcipher_encrypt_iv(desc, dst, src, bytes) \ crypto_cipher_encrypt_iv((desc)->tfm, dst, src, bytes, (desc)->info) extern struct ll_crypto_cipher *ll_crypto_alloc_blkcipher( const char * algname, u32 type, u32 mask); static inline struct ll_crypto_hash *ll_crypto_alloc_hash(const char *alg, u32 type, u32 mask) { char buf[CRYPTO_MAX_ALG_NAME + 1]; const char *pan = alg; if (strncmp("hmac(", alg, 5) == 0) { char *vp = strnchr(alg, CRYPTO_MAX_ALG_NAME, ')'); if (vp) { memcpy(buf, alg+ 5, vp - alg- 5); buf[vp - alg - 5] = 0x00; pan = buf; } } return crypto_alloc_tfm(pan, 0); } static inline int ll_crypto_hash_init(struct hash_desc *desc) { crypto_digest_init(desc->tfm); return 0; } static inline int ll_crypto_hash_update(struct hash_desc *desc, struct scatterlist *sg, unsigned int nbytes) { struct scatterlist *sl = sg; unsigned int count; /* * This way is very weakness. We must ensure that * the sum of sg[0..i]->length isn't greater than nbytes. * In the upstream kernel the crypto_hash_update() also * via the nbytes computed the count of sg[...]. * The old style is more safely. but it gone. */ for (count = 0; nbytes > 0; count ++, sl ++) { nbytes -= sl->length; } crypto_digest_update(desc->tfm, sg, count); return 0; } static inline int ll_crypto_hash_final(struct hash_desc *desc, u8 *out) { crypto_digest_final(desc->tfm, out); return 0; } static inline int ll_crypto_hmac(struct crypto_tfm *tfm, u8 *key, unsigned int *keylen, struct scatterlist *sg, unsigned int nbytes, u8 *out) { struct scatterlist *sl = sg; int count; for (count = 0; nbytes > 0; count ++, sl ++) { nbytes -= sl->length; } crypto_hmac(tfm, key, keylen, sg, count, out); return 0; } #define ll_crypto_hash_setkey(tfm, key, keylen) crypto_digest_setkey(tfm, key, keylen) #define ll_crypto_blkcipher_blocksize(tfm) crypto_tfm_alg_blocksize(tfm) #define ll_crypto_blkcipher_ivsize(tfm) crypto_tfm_alg_ivsize(tfm) #define ll_crypto_hash_digestsize(tfm) crypto_tfm_alg_digestsize(tfm) #define ll_crypto_hash_blocksize(tfm) crypto_tfm_alg_blocksize(tfm) #define ll_crypto_free_hash(tfm) crypto_free_tfm(tfm) #define ll_crypto_free_blkcipher(tfm) crypto_free_tfm(tfm) #endif /* HAVE_ASYNC_BLOCK_CIPHER */ #ifdef HAVE_SECURITY_PLUG #define ll_remove_suid(inode,mnt) remove_suid(inode,mnt) #define ll_vfs_rmdir(dir,entry,mnt) vfs_rmdir(dir,entry,mnt) #define ll_vfs_mkdir(inode,dir,mnt,mode) vfs_mkdir(inode,dir,mnt,mode) #define ll_vfs_link(old,mnt,dir,new,mnt1) vfs_link(old,mnt,dir,new,mnt1) #define ll_vfs_unlink(inode,entry,mnt) vfs_unlink(inode,entry,mnt) #define ll_vfs_mknod(dir,entry,mnt,mode,dev) \ vfs_mknod(dir,entry,mnt,mode,dev) #define ll_security_inode_unlink(dir,entry,mnt) \ security_inode_unlink(dir,entry,mnt) #define ll_vfs_rename(old,old_dir,mnt,new,new_dir,mnt1) \ vfs_rename(old,old_dir,mnt,new,new_dir,mnt1) #else #define ll_remove_suid(inode,mnt) remove_suid(inode) #define ll_vfs_rmdir(dir,entry,mnt) vfs_rmdir(dir,entry) #define ll_vfs_mkdir(inode,dir,mnt,mode) vfs_mkdir(inode,dir,mode) #define ll_vfs_link(old,mnt,dir,new,mnt1) vfs_link(old,dir,new) #define ll_vfs_unlink(inode,entry,mnt) vfs_unlink(inode,entry) #define ll_vfs_mknod(dir,entry,mnt,mode,dev) vfs_mknod(dir,entry,mode,dev) #define ll_security_inode_unlink(dir,entry,mnt) security_inode_unlink(dir,entry) #define ll_vfs_rename(old,old_dir,mnt,new,new_dir,mnt1) \ vfs_rename(old,old_dir,new,new_dir) #endif #ifndef get_cpu #ifdef CONFIG_PREEMPT #define get_cpu() ({ preempt_disable(); smp_processor_id(); }) #define put_cpu() preempt_enable() #else #define get_cpu() smp_processor_id() #define put_cpu() #endif #endif /* get_cpu & put_cpu */ #ifndef for_each_possible_cpu #define for_each_possible_cpu(i) for_each_cpu(i) #endif #ifndef cpu_to_node #define cpu_to_node(cpu) 0 #endif #ifndef abs static inline int abs(int x) { return (x < 0) ? -x : x; } #endif #ifndef labs static inline long labs(long x) { return (x < 0) ? -x : x; } #endif /* Using kernel fls(). Userspace will use one defined in user-bitops.h. */ #ifndef __fls #define __fls fls #endif #endif /* __KERNEL__ */ #endif /* _COMPAT25_H */