/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- * vim:expandtab:shiftwidth=8:tabstop=8: */#ifndef __LLU_H_#define __LLU_H_#include <liblustre.h>#include <obd.h>#include <obd_class.h>#include <lustre_mds.h>#include <lustre_lite.h>#include <lustre_ver.h>#include <sys/types.h>#include <sys/stat.h>/* 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_mdc_exp;        struct obd_export       *ll_osc_exp;        obd_id                   ll_rootino;        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#define LLI_F_HAVE_OST_SIZE_LOCK        0#define LLI_F_HAVE_MDS_SIZE_LOCK        1struct llu_inode_info {        struct llu_sb_info     *lli_sbi;        struct ll_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;        /* 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_osc_exp;}static inline struct obd_export *llu_i2mdcexp(struct inode *inode){        return llu_i2info(inode)->lli_sbi->ll_mdc_exp;}static inline int llu_is_root_inode(struct inode *inode){        return (llu_i2info(inode)->lli_fid.id ==                llu_i2info(inode)->lli_sbi->ll_rootino);}#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 2static inline void ll_inode2fid(struct ll_fid *fid, struct inode *inode){        *fid = 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 *mdc_uuid;        char *osc_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 mds_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 lov_stripe_md *lsm);int llu_setattr_raw(struct inode *inode, struct iattr *attr);int llu_file_flock(struct inode *ino, int cmd, struct file_lock *file_lock);extern struct fssw_ops llu_fssw_ops;/* file.c */void llu_prepare_mdc_op_data(struct mdc_op_data *data,                             struct inode *i1,                             struct inode *i2,                             const char *name,                             int namelen,                             int mode);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_mdc_close(struct obd_export *mdc_exp, struct inode *inode);int llu_file_release(struct inode *inode);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_glimpse_size(struct inode *inode);int llu_extent_lock_cancel_cb(struct ldlm_lock *lock,                                    struct ldlm_lock_desc *new, void *data,                                    int flag);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_mdc_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);/* 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