/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- * vim:expandtab:shiftwidth=8:tabstop=8: */ #ifndef __LLU_H_ #define __LLU_H_ #include #include #include #include #include #include #include #include /* This should not be "optimized" use ~0ULL because page->index is a long and * 32-bit systems are therefore limited to 16TB in a mapping */ #define PAGE_CACHE_MAXBYTES ((__u64)(~0UL) << CFS_PAGE_SHIFT) struct ll_file_data { struct obd_client_handle fd_mds_och; __u32 fd_flags; struct lustre_handle fd_cwlockh; unsigned long fd_gid; }; struct llu_sb_info { struct obd_uuid ll_sb_uuid; struct obd_export *ll_md_exp; struct obd_export *ll_dt_exp; struct lu_fid ll_root_fid; int ll_flags; struct lustre_client_ocd ll_lco; struct list_head ll_conn_chain; struct obd_uuid ll_mds_uuid; struct obd_uuid ll_mds_peer_uuid; char *ll_instance; }; #define LL_SBI_NOLCK 0x1 enum lli_flags { /* MDS has an authority for the Size-on-MDS attributes. */ LLIF_MDS_SIZE_LOCK = (1 << 0), }; struct llu_inode_info { struct llu_sb_info *lli_sbi; struct lu_fid lli_fid; struct lov_stripe_md *lli_smd; char *lli_symlink_name; struct semaphore lli_open_sem; __u64 lli_maxbytes; unsigned long lli_flags; __u64 lli_ioepoch; /* for libsysio */ struct file_identifier lli_sysio_fid; struct lookup_intent *lli_it; /* XXX workaround for libsysio readdir */ loff_t lli_dir_pos; /* in libsysio we have no chance to store data in file, * so place it here. since it's possible that an file * was opened several times without close, we track an * open_count here */ struct ll_file_data *lli_file_data; int lli_open_flags; int lli_open_count; /* not for stat, change it later */ int lli_st_flags; unsigned long lli_st_generation; }; static inline struct llu_sb_info *llu_fs2sbi(struct filesys *fs) { return (struct llu_sb_info*)(fs->fs_private); } static inline struct llu_inode_info *llu_i2info(struct inode *inode) { return (struct llu_inode_info*)(inode->i_private); } static inline struct intnl_stat *llu_i2stat(struct inode *inode) { return &inode->i_stbuf; } static inline struct llu_sb_info *llu_i2sbi(struct inode *inode) { return llu_i2info(inode)->lli_sbi; } static inline struct obd_export *llu_i2obdexp(struct inode *inode) { return llu_i2info(inode)->lli_sbi->ll_dt_exp; } static inline struct obd_export *llu_i2mdexp(struct inode *inode) { return llu_i2info(inode)->lli_sbi->ll_md_exp; } static inline int llu_is_root_inode(struct inode *inode) { return (fid_seq(&llu_i2info(inode)->lli_fid) == fid_seq(&llu_i2info(inode)->lli_sbi->ll_root_fid) && fid_oid(&llu_i2info(inode)->lli_fid) == fid_oid(&llu_i2info(inode)->lli_sbi->ll_root_fid)); } #define LL_SAVE_INTENT(inode, it) \ do { \ struct lookup_intent *temp; \ LASSERT(llu_i2info(inode)->lli_it == NULL); \ OBD_ALLOC(temp, sizeof(*temp)); \ memcpy(temp, it, sizeof(*temp)); \ llu_i2info(inode)->lli_it = temp; \ CDEBUG(D_DENTRY, "alloc intent %p to inode %p(ino %llu)\n", \ temp, inode, (long long)llu_i2stat(inode)->st_ino); \ } while(0) #define LL_GET_INTENT(inode, it) \ do { \ it = llu_i2info(inode)->lli_it; \ \ LASSERT(it); \ llu_i2info(inode)->lli_it = NULL; \ CDEBUG(D_DENTRY, "dettach intent %p from inode %p(ino %llu)\n", \ it, inode, (long long)llu_i2stat(inode)->st_ino); \ } while(0) /* interpet return codes from intent lookup */ #define LL_LOOKUP_POSITIVE 1 #define LL_LOOKUP_NEGATIVE 2 static inline struct lu_fid *ll_inode2fid(struct inode *inode) { LASSERT(inode != NULL); return &llu_i2info(inode)->lli_fid; } struct it_cb_data { struct inode *icbd_parent; struct pnode *icbd_child; obd_id hash; }; void ll_i2gids(__u32 *suppgids, struct inode *i1,struct inode *i2); typedef int (*intent_finish_cb)(struct ptlrpc_request *, struct inode *parent, struct pnode *pnode, struct lookup_intent *, int offset, obd_id ino); int llu_intent_lock(struct inode *parent, struct pnode *pnode, struct lookup_intent *, int flags, intent_finish_cb); static inline __u64 ll_file_maxbytes(struct inode *inode) { return llu_i2info(inode)->lli_maxbytes; } struct mount_option_s { char *md_uuid; char *dt_uuid; }; #define IS_BAD_PTR(ptr) \ ((unsigned long)(ptr) == 0 || (unsigned long)(ptr) > -1000UL) /* llite_lib.c */ int liblustre_process_log(struct config_llog_instance *cfg, char *mgsnid, char *profile, int allow_recov); int ll_parse_mount_target(const char *target, char **mgsnid, char **fsname); extern struct mount_option_s mount_option; /* super.c */ void llu_update_inode(struct inode *inode, struct mdt_body *body, struct lov_stripe_md *lmm); void obdo_to_inode(struct inode *dst, struct obdo *src, obd_flag valid); void obdo_from_inode(struct obdo *dst, struct inode *src, obd_flag valid); int ll_it_open_error(int phase, struct lookup_intent *it); struct inode *llu_iget(struct filesys *fs, struct lustre_md *md); int llu_inode_getattr(struct inode *inode, struct obdo *obdo); int llu_md_setattr(struct inode *inode, struct md_op_data *op_data, struct md_open_data **mod); int llu_setattr_raw(struct inode *inode, struct iattr *attr); extern struct fssw_ops llu_fssw_ops; /* file.c */ void llu_prep_md_op_data(struct md_op_data *op_data, struct inode *i1, struct inode *i2, const char *name, int namelen, int mode, __u32 opc); void llu_finish_md_op_data(struct md_op_data *op_data); int llu_create(struct inode *dir, struct pnode_base *pnode, int mode); int llu_local_open(struct llu_inode_info *lli, struct lookup_intent *it); int llu_iop_open(struct pnode *pnode, int flags, mode_t mode); int llu_md_close(struct obd_export *md_exp, struct inode *inode); int llu_file_release(struct inode *inode); int llu_sizeonmds_update(struct inode *inode, struct md_open_data *mod, struct lustre_handle *fh, __u64 ioepoch); int llu_iop_close(struct inode *inode); _SYSIO_OFF_T llu_iop_pos(struct inode *ino, _SYSIO_OFF_T off); int llu_vmtruncate(struct inode * inode, loff_t offset, obd_flag obd_flags); void obdo_refresh_inode(struct inode *dst, struct obdo *src, obd_flag valid); int llu_objects_destroy(struct ptlrpc_request *request, struct inode *dir); /* rw.c */ int llu_iop_read(struct inode *ino, struct ioctx *ioctxp); int llu_iop_write(struct inode *ino, struct ioctx *ioctxp); int llu_iop_iodone(struct ioctx *ioctxp); int llu_local_size(struct inode *inode); int llu_glimpse_size(struct inode *inode); int llu_extent_lock(struct ll_file_data *fd, struct inode *inode, struct lov_stripe_md *lsm, int mode, ldlm_policy_data_t *policy, struct lustre_handle *lockh, int ast_flags); int llu_extent_unlock(struct ll_file_data *fd, struct inode *inode, struct lov_stripe_md *lsm, int mode, struct lustre_handle *lockh); /* namei.c */ int llu_iop_lookup(struct pnode *pnode, struct inode **inop, struct intent *intnt, const char *path); void unhook_stale_inode(struct pnode *pno); struct inode *llu_inode_from_lock(struct ldlm_lock *lock); int llu_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc, void *data, int flag); /* dir.c */ ssize_t llu_iop_filldirentries(struct inode *ino, _SYSIO_OFF_T *basep, char *buf, size_t nbytes); /* liblustre/llite_fid.c*/ unsigned long llu_fid_build_ino(struct llu_sb_info *sbi, struct lu_fid *fid); /* ext2 related */ #define EXT2_NAME_LEN (255) struct ext2_dirent { __u32 inode; __u16 rec_len; __u8 name_len; __u8 file_type; char name[EXT2_NAME_LEN]; }; #define EXT2_DIR_PAD 4 #define EXT2_DIR_ROUND (EXT2_DIR_PAD - 1) #define EXT2_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT2_DIR_ROUND) & \ ~EXT2_DIR_ROUND) static inline struct ext2_dirent *ext2_next_entry(struct ext2_dirent *p) { return (struct ext2_dirent*)((char*) p + le16_to_cpu(p->rec_len)); } static inline void inode_init_lvb(struct inode *inode, struct ost_lvb *lvb) { struct intnl_stat *st = llu_i2stat(inode); lvb->lvb_size = st->st_size; lvb->lvb_blocks = st->st_blocks; lvb->lvb_mtime = st->st_mtime; lvb->lvb_atime = st->st_atime; lvb->lvb_ctime = st->st_ctime; } #endif