X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Finclude%2Flinux%2Flustre_smfs.h;h=b51d628ad2317b08dc54b638be205a250640887c;hb=289e9caabec18e07df40f206b1000d91d9e305d7;hp=2cb6774e1aec69904a1622662d35dd7b4dd32aa2;hpb=cd9c585e8c7bdd6cfd802be64ef277dfd466be17;p=fs%2Flustre-release.git diff --git a/lustre/include/linux/lustre_smfs.h b/lustre/include/linux/lustre_smfs.h index 2cb6774..b51d628 100644 --- a/lustre/include/linux/lustre_smfs.h +++ b/lustre/include/linux/lustre_smfs.h @@ -1,9 +1,41 @@ +/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- + * vim:expandtab:shiftwidth=8:tabstop=8: + * + * Copyright (C) 2001-2003 Cluster File Systems, Inc. + * + * This file is part of Lustre, http://www.lustre.org. + * + * Lustre is free software; you can redistribute it and/or + * modify it under the terms of version 2 of the GNU General Public + * License as published by the Free Software Foundation. + * + * Lustre 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 for more details. + * + * You should have received a copy of the GNU General Public License + * along with Lustre; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + * smfs data structures. + * See also lustre_idl.h for wire formats of requests. + * + */ + #ifndef __LUSTRE_SMFS_H #define __LUSTRE_SMFS_H +struct snap_inode_info { + int sn_flags; /*the flags indicated inode type */ + int sn_gen; /*the inode generation*/ + int sn_index; /*the inode snap_index*/ + ino_t sn_root_ino; /*the root ino of this snap*/ +}; struct smfs_inode_info { - struct inode *smi_inode; - __u32 smi_flags; + struct inode *smi_inode; + __u32 smi_flags; + struct snap_inode_info sm_sninfo; }; struct journal_operations { @@ -21,254 +53,475 @@ struct sm_operations { struct file_operations sm_file_fops; struct file_operations sm_sym_fops; struct dentry_operations sm_dentry_ops; - struct journal_operations sm_journal_ops; + struct journal_operations sm_journal_ops; }; +/*smfs rec*/ +typedef int (*smfs_pack_rec_func)(char *buffer, struct dentry *dentry, + struct inode *dir, void *data1, + void *data2, int op); +typedef enum { + PACK_NORMAL = 0, + PACK_OST = 1, + PACK_MDS = 2, + PACK_MAX = 3, +} pack_func_t; + +struct mds_kml_pack_info { + int mpi_bufcount; + int mpi_size[4]; + int mpi_total_size; +}; +typedef int (*smfs_hook_func)(struct inode *inode, void *dentry, + void *data1, void *data2, int op, void *handle); +struct smfs_hook_ops { + struct list_head smh_list; + char * smh_name; + smfs_hook_func smh_post_op; + smfs_hook_func smh_pre_op; +}; struct smfs_super_info { - struct super_block *smsi_sb; - struct vfsmount *smsi_mnt; /* mount the cache kern with - * kern_do_mount (like MDS) */ - struct fsfilt_operations *sm_cache_fsfilt; /* fsfilt operations */ - struct fsfilt_operations *sm_fsfilt; /* fsfilt operations */ - struct sm_operations *sm_ops; /* cache ops for set cache - * inode ops */ - - struct lvfs_run_ctxt *smsi_ctxt; - struct llog_ctxt *smsi_rec_log; /* smfs kml llog */ - struct dentry *smsi_logs_dir; - struct dentry *smsi_objects_dir; - struct dentry *smsi_delete_dir; /* for delete inode dir */ - char *cache_fs_type; /* cache file system type */ - char *fs_type; /* file system type */ - __u32 flags; /* flags */ - __u32 ops_check; + struct super_block *smsi_sb; + struct vfsmount *smsi_mnt; /* mount the cache kern */ + struct fsfilt_operations *sm_cache_fsfilt; /* fsfilt operations */ + struct fsfilt_operations *sm_fsfilt; /* fsfilt operations */ + struct sm_operations *sm_ops; /* cache ops */ + struct lvfs_run_ctxt *smsi_ctxt; + struct llog_ctxt *smsi_rec_log; /* smfs kml llog */ + struct dentry *smsi_logs_dir; + struct dentry *smsi_objects_dir; + struct dentry *smsi_delete_dir; /* for delete inode dir */ + char *smsi_cache_ftype; /* cache file system type */ + char *smsi_ftype; /* file system type */ + struct obd_export *smsi_exp; /* file system obd exp */ + struct snap_super_info *smsi_snap_info; /* snap table cow */ + smfs_pack_rec_func smsi_pack_rec[PACK_MAX]; /* sm_pack_rec type ops */ + __u32 smsi_flags; /* flags */ + __u32 smsi_ops_check; + struct list_head smsi_hook_list; + kmem_cache_t * smsi_inode_cachep; /*inode_cachep*/ }; -#define SMFS_FILE_TYPE "smfs" -#define SMFS_FILE_MAGIC 0x19760218 + +#define SMFS_FILE_TYPE "smfs" +#define SMFS_FILE_MAGIC 0x19760218 struct smfs_file_info { - struct file *c_file; - int magic; + struct file *c_file; + int magic; }; -struct smfs_record_extents { - size_t sre_count; - loff_t sre_off; +struct smfs_proc_args { + struct super_block *sr_sb; + int sr_count; + int sr_flags; + void *sr_data; +}; +struct fs_extent{ + __u32 e_block; /* first logical block extent covers */ + __u32 e_start; /* first physical block extents lives */ + __u32 e_num; /* number of blocks covered by extent */ }; -#define I2SMI(inode) ((struct smfs_inode_info *) (&(inode->u.generic_ip))) +#define I2SMI(inode) ((struct smfs_inode_info *) ((inode->u.generic_ip))) + #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)) -#define S2SMI(sb) ((struct smfs_super_info *) (&(sb->u.generic_sbp))) -#define S2CSB(sb) (((struct smfs_super_info *) (&(sb->u.generic_sbp)))->smsi_sb) +#define S2SMI(sb) ((struct smfs_super_info *) ((sb->u.generic_sbp))) +#define S2CSB(sb) (((struct smfs_super_info *)((sb->u.generic_sbp)))->smsi_sb) #else #define S2SMI(sb) ((struct smfs_super_info *) (sb->s_fs_info)) #define S2CSB(sb) (((struct smfs_super_info *) (sb->s_fs_info))->smsi_sb) #endif -#define I2CI(inode) (((struct smfs_inode_info*) (&(inode->u.generic_ip)))->smi_inode) +#define I2CI(inode) (((struct smfs_inode_info*) ((inode->u.generic_ip)))->smi_inode) #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)) -#define I2CSB(inode) ((struct smfs_super_info *) (&(inode->i_sb->u.generic_sbp))) +#define I2CSB(inode) ((struct smfs_super_info *) ((inode->i_sb->u.generic_sbp))) #else #define I2CSB(inode) ((struct smfs_super_info *) (inode->i_sb->s_fs_info)) #endif #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)) #define I2FOPS(inode) (((struct smfs_super_info *) \ - (&(inode->i_sb->u.generic_sbp)))->sm_cache_fsfilt) + ((inode->i_sb->u.generic_sbp)))->sm_cache_fsfilt) #else #define I2FOPS(inode) (((struct smfs_super_info *) \ - (inode->i_sb->s_fs_info))->sm_cache_fsfilt) + (inode->i_sb->s_fs_info))->sm_cache_fsfilt) #endif +#define I2SNAPI(inode) (&(I2SMI(inode)->sm_sninfo)) +#define I2SNAPCOPS(inode) ((S2SMI(inode->i_sb))->smsi_snap_info->snap_cache_fsfilt) +#define I2SNAPOPS(inode) ((S2SMI(inode->i_sb))->smsi_snap_info->snap_fsfilt) + +#define S2SNAPI(sb) (S2SMI(sb)->smsi_snap_info) #define F2SMFI(file) ((struct smfs_file_info *)((file->private_data))) #define F2CF(file) (((struct smfs_file_info *) ((file->private_data)))->c_file) +#define SIZE2BLKS(size, inode) ((size + (I2CI(inode)->i_blksize)) >> (I2CI(inode)->i_blkbits)) +#define OFF2BLKS(off, inode) (off >> (I2CI(inode)->i_blkbits)) -#define SM_DO_REC 0x1 -#define SM_INIT_REC 0x2 -#define SM_CACHE_HOOK 0x4 +#define SM_DO_REC 0x1 +#define SM_INIT_REC 0x2 +#define SM_CACHE_HOOK 0x4 +#define SM_OVER_WRITE 0x8 +#define SM_DIRTY_WRITE 0x10 +#define SM_DO_COW 0x20 +#define SM_DO_COWED 0x40 -#define SMFS_DO_REC(smfs_info) (smfs_info->flags & SM_DO_REC) -#define SMFS_SET_REC(smfs_info) (smfs_info->flags |= SM_DO_REC) -#define SMFS_CLEAN_REC(smfs_info) (smfs_info->flags &= ~SM_DO_REC) +#define SMFS_DO_REC(smfs_info) (smfs_info->smsi_flags & SM_DO_REC) +#define SMFS_SET_REC(smfs_info) (smfs_info->smsi_flags |= SM_DO_REC) +#define SMFS_CLEAN_REC(smfs_info) (smfs_info->smsi_flags &= ~SM_DO_REC) -#define SMFS_INIT_REC(smfs_info) (smfs_info->flags & SM_INIT_REC) -#define SMFS_SET_INIT_REC(smfs_info) (smfs_info->flags |= SM_INIT_REC) -#define SMFS_CLEAN_INIT_REC(smfs_info) (smfs_info->flags &= ~SM_INIT_REC) +#define SMFS_INIT_REC(smfs_info) (smfs_info->smsi_flags & SM_INIT_REC) +#define SMFS_SET_INIT_REC(smfs_info) (smfs_info->smsi_flags |= SM_INIT_REC) +#define SMFS_CLEAN_INIT_REC(smfs_info) (smfs_info->smsi_flags &= ~SM_INIT_REC) #define SMFS_SET_INODE_REC(inode) (I2SMI(inode)->smi_flags |= SM_DO_REC) #define SMFS_DO_INODE_REC(inode) (I2SMI(inode)->smi_flags & SM_DO_REC) #define SMFS_CLEAN_INODE_REC(inode) (I2SMI(inode)->smi_flags &= ~SM_DO_REC) -#define SMFS_CACHE_HOOK(smfs_info) (smfs_info->flags & SM_CACHE_HOOK) -#define SMFS_SET_CACHE_HOOK(smfs_info) (smfs_info->flags |= SM_CACHE_HOOK) -#define SMFS_CLEAN_CACHE_HOOK(smfs_info) (smfs_info->flags &= ~SM_CACHE_HOOK) +#define SMFS_CACHE_HOOK(smfs_info) (smfs_info->smsi_flags & SM_CACHE_HOOK) +#define SMFS_SET_CACHE_HOOK(smfs_info) (smfs_info->smsi_flags |= SM_CACHE_HOOK) +#define SMFS_CLEAN_CACHE_HOOK(smfs_info) (smfs_info->smsi_flags &= ~SM_CACHE_HOOK) #define SMFS_INODE_CACHE_HOOK(inode) (I2SMI(inode)->smi_flags & SM_CACHE_HOOK) #define SMFS_SET_INODE_CACHE_HOOK(inode) (I2SMI(inode)->smi_flags |= SM_CACHE_HOOK) #define SMFS_CLEAN_INODE_CACHE_HOOK(inode) (I2SMI(inode)->smi_flags &= ~SM_CACHE_HOOK) +#define SMFS_INODE_OVER_WRITE(inode) (I2SMI(inode)->smi_flags & SM_OVER_WRITE) +#define SMFS_SET_INODE_OVER_WRITE(inode) (I2SMI(inode)->smi_flags |= SM_OVER_WRITE) +#define SMFS_CLEAN_INODE_OVER_WRITE(inode) (I2SMI(inode)->smi_flags &= ~SM_OVER_WRITE) + +#define SMFS_INODE_DIRTY_WRITE(inode) (I2SMI(inode)->smi_flags & SM_DIRTY_WRITE) +#define SMFS_SET_INODE_DIRTY_WRITE(inode) (I2SMI(inode)->smi_flags |= SM_DIRTY_WRITE) +#define SMFS_CLEAN_INODE_DIRTY_WRITE(inode) (I2SMI(inode)->smi_flags &= ~SM_DIRTY_WRITE) + +#define SMFS_DO_COW(smfs_info) (smfs_info->smsi_flags & SM_DO_COW) +#define SMFS_SET_COW(smfs_info) (smfs_info->smsi_flags |= SM_DO_COW) +#define SMFS_CLEAN_COW(smfs_info) (smfs_info->smsi_flags &= ~SM_DO_COW) + +#define SMFS_SET_INODE_COW(inode) (I2SMI(inode)->smi_flags |= SM_DO_COW) +#define SMFS_DO_INODE_COW(inode) (I2SMI(inode)->smi_flags & SM_DO_COW) +#define SMFS_CLEAN_INODE_COW(inode) (I2SMI(inode)->smi_flags &= ~SM_DO_COW) + +#define SMFS_SET_INODE_COWED(inode) (I2SMI(inode)->smi_flags |= SM_DO_COWED) +#define SMFS_DO_INODE_COWED(inode) (I2SMI(inode)->smi_flags & SM_DO_COWED) +#define SMFS_CLEAN_INODE_COWED(inode) (I2SMI(inode)->smi_flags &= ~SM_DO_COWED) + + #define LVFS_SMFS_BACK_ATTR "lvfs_back_attr" -#define REC_COUNT_BIT 0 -#define REC_COUNT_MASK 0x01 /*0001*/ -#define REC_OP_BIT 1 -#define REC_OP_MASK 0x06 /*0110*/ -#define REC_WRITE_KML_BIT 3 -#define REC_WRITE_KML_MASK 0x08 /*1000*/ +#define REC_COUNT_BIT 0 +#define REC_COUNT_MASK 0x01 /*0001*/ +#define REC_OP_BIT 1 +#define REC_OP_MASK 0x06 /*0110*/ +#define REC_WRITE_KML_BIT 3 +#define REC_WRITE_KML_MASK 0x08 /*1000*/ #define REC_DEC_LINK_BIT 4 #define REC_DEC_LINK_MASK 0x10 /*10000* different with unlink*/ +#define REC_GET_OID_BIT 5 +#define REC_GET_OID_MASK 0x20 /*100000*/ +#define REC_PACK_TYPE_BIT 6 +#define REC_PACK_TYPE_MASK 0x1C0 /*111000000*/ #define SET_REC_COUNT_FLAGS(flag, count_flag) \ - (flag |= count_flag << REC_COUNT_BIT) + (flag |= count_flag << REC_COUNT_BIT) #define GET_REC_COUNT_FLAGS(flag) \ - ((flag & REC_COUNT_MASK) >> REC_COUNT_BIT) + ((flag & REC_COUNT_MASK) >> REC_COUNT_BIT) #define SET_REC_OP_FLAGS(flag, op_flag) \ - (flag |= op_flag << REC_OP_BIT) + (flag |= op_flag << REC_OP_BIT) #define GET_REC_OP_FLAGS(flag) \ - ((flag & REC_OP_MASK) >> REC_OP_BIT) + ((flag & REC_OP_MASK) >> REC_OP_BIT) #define SET_REC_WRITE_KML_FLAGS(flag, op_flag) \ - (flag |= op_flag << REC_OP_BIT) + (flag |= op_flag << REC_OP_BIT) #define GET_REC_WRITE_KML_FLAGS(flag) \ - ((flag & REC_WRITE_KML_MASK) >> REC_WRITE_KML_BIT) + ((flag & REC_WRITE_KML_MASK) >> REC_WRITE_KML_BIT) #define SET_REC_DEC_LINK_FLAGS(flag, op_flag) \ - (flag |= op_flag << REC_DEC_LINK_BIT) + (flag |= op_flag << REC_DEC_LINK_BIT) #define GET_REC_DEC_LINK_FLAGS(flag) \ - ((flag & REC_DEC_LINK_MASK) >> REC_DEC_LINK_BIT) + ((flag & REC_DEC_LINK_MASK) >> REC_DEC_LINK_BIT) -#define SMFS_REC_ALL 0x1 -#define SMFS_REC_BY_COUNT 0x0 +#define SET_REC_GET_ID_FLAGS(flag, op_flag) \ + (flag |= op_flag << REC_GET_OID_BIT) +#define GET_REC_GET_OID_FLAGS(flag) \ + ((flag & REC_GET_OID_MASK) >> REC_GET_OID_BIT) -#define SMFS_REINT_REC 0x1 -#define SMFS_UNDO_REC 0x2 +#define SET_REC_PACK_TYPE_INDEX(flag, op_flag) \ + (flag |= op_flag << REC_PACK_TYPE_BIT) +#define GET_REC_PACK_TYPE_INDEX(flag) \ + ((flag & REC_PACK_TYPE_MASK) >> REC_PACK_TYPE_BIT) -#define SMFS_WRITE_KML 0x1 +#define SMFS_REC_ALL 0x1 +#define SMFS_REC_BY_COUNT 0x0 -#define SMFS_DEC_LINK 0x1 +#define SMFS_REINT_REC 0x1 +#define SMFS_UNDO_REC 0x2 + +#define SMFS_WRITE_KML 0x1 +#define SMFS_DEC_LINK 0x1 +#define SMFS_GET_OID 0x1 #define SMFS_DO_REINT_REC(flag) \ - (GET_REC_OP_FLAGS(flag) == SMFS_REINT_REC) + (GET_REC_OP_FLAGS(flag) == SMFS_REINT_REC) #define SMFS_DO_UNDO_REC(flag) \ - (GET_REC_OP_FLAGS(flag) == SMFS_UNDO_REC) + (GET_REC_OP_FLAGS(flag) == SMFS_UNDO_REC) #define SMFS_DO_REC_ALL(flag) \ - (GET_REC_COUNT_FLAGS(flag) == SMFS_REC_ALL) + (GET_REC_COUNT_FLAGS(flag) == SMFS_REC_ALL) #define SMFS_DO_REC_BY_COUNT(flag) \ - (GET_REC_COUNT_FLAGS(flag) == SMFS_REC_BY_COUNT) + (GET_REC_COUNT_FLAGS(flag) == SMFS_REC_BY_COUNT) #define SMFS_DO_WRITE_KML(flag) \ - (GET_REC_WRITE_KML_FLAGS(flag) == SMFS_WRITE_KML) + (GET_REC_WRITE_KML_FLAGS(flag) == SMFS_WRITE_KML) #define SMFS_DO_DEC_LINK(flag) \ - (GET_REC_DEC_LINK_FLAGS(flag) == SMFS_DEC_LINK) + (GET_REC_DEC_LINK_FLAGS(flag) == SMFS_DEC_LINK) + +#define SMFS_DO_GET_OID(flag) \ + (GET_REC_GET_OID_FLAGS(flag) == SMFS_GET_OID) + +/*DIRTY flags of write ops*/ +#define REINT_EXTENTS_FLAGS "replay_flags" +#define SMFS_DIRTY_WRITE 0x01 +#define SMFS_OVER_WRITE 0x02 + -static inline void duplicate_inode(struct inode *dst_inode, - struct inode *src_inode) +static inline void duplicate_inode(struct inode *dst_inode, + struct inode *src_inode) { - dst_inode->i_mode = src_inode->i_mode; - dst_inode->i_uid = src_inode->i_uid; - dst_inode->i_gid = src_inode->i_gid; - dst_inode->i_nlink = src_inode->i_nlink; - dst_inode->i_size = src_inode->i_size; - dst_inode->i_atime = src_inode->i_atime; - dst_inode->i_ctime = src_inode->i_ctime; - dst_inode->i_mtime = src_inode->i_mtime; - dst_inode->i_blksize = src_inode->i_blksize; - dst_inode->i_version = src_inode->i_version; - dst_inode->i_state = src_inode->i_state; - dst_inode->i_generation = src_inode->i_generation; - - /* This is to make creating special files working. */ - dst_inode->i_rdev = src_inode->i_rdev; + dst_inode->i_mode = src_inode->i_mode; + dst_inode->i_uid = src_inode->i_uid; + dst_inode->i_gid = src_inode->i_gid; + dst_inode->i_nlink = src_inode->i_nlink; + dst_inode->i_size = src_inode->i_size; + dst_inode->i_atime = src_inode->i_atime; + dst_inode->i_ctime = src_inode->i_ctime; + dst_inode->i_mtime = src_inode->i_mtime; + dst_inode->i_blksize = src_inode->i_blksize; + dst_inode->i_version = src_inode->i_version; + dst_inode->i_state = src_inode->i_state; + dst_inode->i_generation = src_inode->i_generation; + + /* This is to make creating special files working. */ + dst_inode->i_rdev = src_inode->i_rdev; } -static inline void post_smfs_inode(struct inode *inode, - struct inode *cache_inode) +static inline void post_smfs_inode(struct inode *inode, + struct inode *cache_inode) { - if (inode && cache_inode) { - duplicate_inode(inode, cache_inode); - /*Here we must release the cache_inode, - *Otherwise we will have no chance to - *do it - */ - cache_inode->i_state &=~I_LOCK; - inode->i_blocks = cache_inode->i_blocks; - } + if (inode && cache_inode) { + duplicate_inode(inode, cache_inode); + /*Here we must release the cache_inode, + *Otherwise we will have no chance to + *do it + */ + cache_inode->i_state &=~I_LOCK; + inode->i_blocks = cache_inode->i_blocks; + } } static inline void pre_smfs_inode(struct inode *inode, - struct inode *cache_inode) + struct inode *cache_inode) { - if (inode && cache_inode) - duplicate_inode(cache_inode, inode); + if (inode && cache_inode) { + cache_inode->i_state = inode->i_state; + // duplicate_inode(cache_inode, inode); + } } /* instantiate a file handle to the cache file */ -static inline void duplicate_file(struct file *dst_file, - struct file *src_file) +static inline void duplicate_file(struct file *dst_file, struct file *src_file) +{ + if (dst_file && src_file) { + dst_file->f_pos = src_file->f_pos; + dst_file->f_mode = src_file->f_mode; + dst_file->f_flags = src_file->f_flags; + dst_file->f_owner = src_file->f_owner; + dst_file->f_vfsmnt = src_file->f_vfsmnt; + + #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)) + dst_file->f_reada = src_file->f_reada; + dst_file->f_ramax = src_file->f_ramax; + dst_file->f_raend = src_file->f_raend; + dst_file->f_ralen = src_file->f_ralen; + dst_file->f_rawin = src_file->f_rawin; + #else + dst_file->f_ra = src_file->f_ra; + #endif + } +} + +static inline void duplicate_sb(struct super_block *dst_sb, + struct super_block *src_sb) +{ + dst_sb->s_blocksize = src_sb->s_blocksize; + dst_sb->s_magic = src_sb->s_magic; + dst_sb->s_blocksize_bits = src_sb->s_blocksize_bits; + dst_sb->s_maxbytes = src_sb->s_maxbytes; + dst_sb->s_flags = src_sb->s_flags; +} + +static inline void d_unalloc(struct dentry *dentry) { - dst_file->f_pos = src_file->f_pos; - dst_file->f_mode = src_file->f_mode; - dst_file->f_flags = src_file->f_flags; - dst_file->f_owner = src_file->f_owner; - dst_file->f_vfsmnt = src_file->f_vfsmnt; - #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)) - dst_file->f_reada = src_file->f_reada; - dst_file->f_ramax = src_file->f_ramax; - dst_file->f_raend = src_file->f_raend; - dst_file->f_ralen = src_file->f_ralen; - dst_file->f_rawin = src_file->f_rawin; + list_del(&dentry->d_hash); + INIT_LIST_HEAD(&dentry->d_hash); #else - dst_file->f_ra = src_file->f_ra; + hlist_del_init(&dentry->d_hash); + dentry->d_flags |= DCACHE_UNHASHED; #endif + dput(dentry); /* this will free the dentry memory */ } -static inline void duplicate_sb(struct super_block *dst_sb, - struct super_block *src_sb) +static inline int smfs_get_dentry_name_index(struct dentry *dentry, + struct qstr *str, + int *index) { - dst_sb->s_blocksize = src_sb->s_blocksize; - dst_sb->s_magic = src_sb->s_magic; - dst_sb->s_blocksize_bits = src_sb->s_blocksize_bits; - dst_sb->s_maxbytes = src_sb->s_maxbytes; + char *name = (char *)dentry->d_name.name; + unsigned long hash; + unsigned char c; + char *str_name; + int len = 0, name_len = 0; + + name_len = dentry->d_name.len; + if (!name_len) + return 0; + hash = init_name_hash(); + while (name_len--) { + c = *(const unsigned char *)name++; + if (c == ':' || c == '\0') + break; + hash = partial_name_hash(c, hash); + len ++; + } + str->hash = end_name_hash(hash); + OBD_ALLOC(str_name, len + 1); + memcpy(str_name, dentry->d_name.name, len); + str->len = len; + str->name = str_name; + if (index && c == ':') { + *index = simple_strtoul(name, 0, 0); + } + return 0; } -static inline void d_unalloc(struct dentry *dentry) +static inline void smfs_free_dentry_name(struct qstr *str) +{ + char *name = (char*)str->name; + OBD_FREE(name, str->len + 1); +} + +static inline struct dentry *pre_smfs_dentry(struct dentry *parent_dentry, + struct inode *cache_inode, + struct dentry *dentry) +{ + struct dentry *cache_dentry = NULL; + + cache_dentry = d_alloc(parent_dentry, &dentry->d_name); + if (!cache_dentry) + RETURN(NULL); + if (!parent_dentry) + cache_dentry->d_parent = cache_dentry; + if (cache_inode) + d_add(cache_dentry, cache_inode); + RETURN(cache_dentry); +} + +static inline void post_smfs_dentry(struct dentry *cache_dentry) { + if (!cache_dentry) + return; + if (cache_dentry->d_inode) + igrab(cache_dentry->d_inode); + d_unalloc(cache_dentry); +} + +static inline int lookup_by_path(char *path, int flags, struct nameidata *nd) +{ + struct dentry *dentry = NULL; + int rc = 0; + #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)) - list_del(&dentry->d_hash); - INIT_LIST_HEAD(&dentry->d_hash); + if (path_init(path, flags, nd)) { #else - hlist_del_init(&dentry->d_hash); + if (path_lookup(path, flags, nd)) { #endif - dput(dentry); /* this will free the dentry memory */ + rc = path_walk(path, nd); + if (rc) + RETURN(rc); + } else { + RETURN(-EINVAL); + } + + dentry = nd->dentry; + + if (!dentry->d_inode || is_bad_inode(dentry->d_inode)) { + path_release(nd); + RETURN(-ENODEV); + } + RETURN(rc); } -static inline struct dentry *pre_smfs_dentry(struct dentry *parent_dentry, - struct inode *cache_inode, - struct dentry *dentry) +/*FIXME there should be more conditions in this check*/ +static inline int smfs_do_rec(struct inode *inode) { - struct dentry *cache_dentry = NULL; - - cache_dentry = d_alloc(parent_dentry, &dentry->d_name); - if (!cache_dentry) - RETURN(NULL); - if (!parent_dentry) - cache_dentry->d_parent = cache_dentry; - if (cache_inode) - d_add(cache_dentry, cache_inode); - RETURN(cache_dentry); + struct super_block *sb = inode->i_sb; + struct smfs_super_info *smfs_info = S2SMI(sb); + + if (SMFS_DO_REC(smfs_info) && SMFS_INIT_REC(smfs_info) && + SMFS_DO_INODE_REC(inode)) + return 1; + return 0; } -static inline void post_smfs_dentry(struct dentry *cache_dentry) +static inline int smfs_cache_hook(struct inode *inode) { - if (!cache_dentry) - return; - if (cache_dentry->d_inode) - igrab(cache_dentry->d_inode); - d_unalloc(cache_dentry); + struct smfs_super_info *smfs_info = I2CSB(inode); + + if (SMFS_CACHE_HOOK(smfs_info) && SMFS_INIT_REC(smfs_info) && + SMFS_INODE_CACHE_HOOK(inode)) + return 1; + else + return 0; } + +static inline int smfs_do_cow(struct inode *inode) +{ + struct super_block *sb = inode->i_sb; + struct smfs_super_info *smfs_info = S2SMI(sb); + + if (SMFS_DO_COW(smfs_info) && SMFS_DO_INODE_COW(inode)) + return 1; + return 0; +} + + +/* XXX BUG 3188 -- must return to one set of opcodes */ +#define SMFS_TRANS_OP(inode, op) \ +{ \ + if (smfs_do_rec(inode)) \ + op = op | 0x10; \ + if (smfs_cache_hook(inode)) \ + op = op | 0x20; \ +} + +extern int smfs_start_rec(struct super_block *sb, struct vfsmount *mnt); +extern int smfs_stop_rec(struct super_block *sb); +extern int smfs_write_extents(struct inode *dir, struct dentry *dentry, + unsigned long from, unsigned long num); +extern int smfs_rec_setattr(struct inode *dir, struct dentry *dentry, + struct iattr *attr); +extern int smfs_rec_precreate(struct dentry *dentry, int *num, struct obdo *oa); +extern int smfs_rec_md(struct inode *inode, void * lmm, int lmm_size); +extern int smfs_rec_unpack(struct smfs_proc_args *args, char *record, + char **pbuf, int *opcode); + + +extern int smfs_post_setup(struct super_block *sb, struct vfsmount *mnt); +extern int smfs_post_cleanup(struct super_block *sb); +extern struct inode *smfs_get_inode (struct super_block *sb, ino_t hash, + struct inode *dir, int index); + +extern int is_smfs_sb(struct super_block *sb); #endif /* _LUSTRE_SMFS_H */