/* -*- 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 { /* this first part of struct should be the same as in mds_info_info */ //struct lustre_id smi_id; /* smfs part. */ struct inode *smi_inode; __u32 smi_flags; struct snap_inode_info sm_sninfo; }; #if 0 struct journal_operations { void *(*tr_start)(struct inode *, int op); void (*tr_commit)(void *handle); }; #endif struct sm_operations { /* operations on the file store */ struct super_operations sm_sb_ops; struct inode_operations sm_dir_iops; struct inode_operations sm_file_iops; struct inode_operations sm_sym_iops; struct inode_operations sm_special_iops; struct file_operations sm_dir_fops; struct file_operations sm_file_fops; struct file_operations sm_sym_fops; //struct dentry_operations sm_dentry_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; }; struct smfs_super_info { 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_kml_log; /* smfs kml llog */ struct dentry *smsi_logs_dir; struct dentry *smsi_objects_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 */ struct rw_semaphore plg_sem; /*rw semaphore to protect plg operations */ __u32 plg_flags; /* flags */ __u32 smsi_flags; __u32 smsi_ops_check; struct list_head smsi_plg_list; //kmem_cache_t * smsi_inode_cachep; /*inode_cachep*/ }; #define SMFS_FILE_TYPE "smfs" #define SMFS_FILE_MAGIC 0x19760218 struct smfs_file_info { struct file *c_file; int magic; }; 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 I2FSI(inode) (((inode->u.generic_ip))) #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)) #define S2FSI(sb) (((sb->u.generic_sbp))) #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 S2FSI(sb) ((sb->s_fs_info)) #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) #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)) #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) #else #define I2FOPS(inode) (((struct smfs_super_info *) \ (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)) /* SMFS external flags and methods */ #define SM_ALL_PLG 0x80L #define SM_KML_PLG 0x1L #define SM_DO_REC SM_KML_PLG //#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->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->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->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" #if 0 #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) #define GET_REC_COUNT_FLAGS(flag) \ ((flag & REC_COUNT_MASK) >> REC_COUNT_BIT) #define SET_REC_OP_FLAGS(flag, op_flag) \ (flag |= op_flag << REC_OP_BIT) #define GET_REC_OP_FLAGS(flag) \ ((flag & REC_OP_MASK) >> REC_OP_BIT) #define SET_REC_WRITE_KML_FLAGS(flag, op_flag) \ (flag |= op_flag << REC_OP_BIT) #define GET_REC_WRITE_KML_FLAGS(flag) \ ((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) #define GET_REC_DEC_LINK_FLAGS(flag) \ ((flag & REC_DEC_LINK_MASK) >> REC_DEC_LINK_BIT) #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 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_REC_ALL 0x1 //#define SMFS_REC_BY_COUNT 0x0 //#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) #define SMFS_DO_UNDO_REC(flag) \ (GET_REC_OP_FLAGS(flag) == SMFS_UNDO_REC) #define SMFS_DO_REC_ALL(flag) \ (GET_REC_COUNT_FLAGS(flag) == SMFS_REC_ALL) #define SMFS_DO_REC_BY_COUNT(flag) \ (GET_REC_COUNT_FLAGS(flag) == SMFS_REC_BY_COUNT) #define SMFS_DO_WRITE_KML(flag) \ (GET_REC_WRITE_KML_FLAGS(flag) == SMFS_WRITE_KML) #define SMFS_DO_DEC_LINK(flag) \ (GET_REC_DEC_LINK_FLAGS(flag) == SMFS_DEC_LINK) #define SMFS_DO_GET_OID(flag) \ (GET_REC_GET_OID_FLAGS(flag) == SMFS_GET_OID) #endif /*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) { 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; dst_inode->i_flags = src_inode->i_flags; /* 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) { 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 later. */ //cache_inode->i_state &=~I_LOCK; inode->i_blocks = cache_inode->i_blocks; } } static inline void i_nlink_inc(struct inode * inode) { inode->i_nlink++; if (I2SMI(inode)) I2CI(inode)->i_nlink++; } static inline void i_nlink_dec(struct inode * inode) { inode->i_nlink--; if (I2SMI(inode)) I2CI(inode)->i_nlink--; } static inline void pre_smfs_inode(struct inode *inode, struct inode *cache_inode) { if (inode && cache_inode) { cache_inode->i_flags = inode->i_flags; cache_inode->i_generation = inode->i_generation; } } /* instantiate a file handle to the cache 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 int smfs_get_dentry_name_index(struct dentry *dentry, struct qstr *str, int *index) { 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); qstr_assign(str, str_name, len); if (index && c == ':') *index = simple_strtoul(name, 0, 0); return 0; } static inline void smfs_free_dentry_name(struct qstr *str) { char *name = (char*)str->name; OBD_FREE(name, str->len + 1); } static int smfs_d_delete(struct dentry * dentry) { return 1; } static struct dentry_operations sm_dop = { .d_delete = smfs_d_delete, }; static inline void smfs_update_dentry(struct dentry *dentry, struct dentry *cache_dentry) { if (DCACHE_CROSS_REF & cache_dentry->d_flags) { dentry->d_flags |= DCACHE_CROSS_REF; dentry->d_generation = cache_dentry->d_generation; dentry->d_mdsnum = cache_dentry->d_mdsnum; dentry->d_fid = cache_dentry->d_fid; dentry->d_inum = cache_dentry->d_inum; } } 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); //wantedi support cache_dentry->d_fsdata = dentry->d_fsdata; //cmd support smfs_update_dentry(cache_dentry, dentry); if (!parent_dentry) cache_dentry->d_parent = cache_dentry; if (cache_inode) { atomic_inc(&cache_inode->i_count); //d_instantiate suppose that d_add(cache_dentry, cache_inode); } //defines d_delete op to force killing dentry cache_dentry->d_op = &sm_dop; RETURN(cache_dentry); } static inline void post_smfs_dentry(struct dentry *cache_dentry) { if (cache_dentry) dput(cache_dentry); } 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; } extern int smfs_write_extents(struct inode *dir, struct dentry *dentry, unsigned long from, unsigned long num); extern int smfs_rec_precreate(struct dentry *dentry, int *num, struct obdo *oa); extern int smfs_rec_unpack(struct smfs_proc_args *args, char *record, char **pbuf, int *opcode); #endif /* _LUSTRE_SMFS_H */