/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- * vim:expandtab:shiftwidth=8:tabstop=8: */ #ifndef LLITE_INTERNAL_H #define LLITE_INTERNAL_H # include #ifdef CONFIG_FS_POSIX_ACL # include #ifdef HAVE_XATTR_ACL # include #endif #ifdef HAVE_LINUX_POSIX_ACL_XATTR_H # include #endif #endif #include #include #include /* for s2sbi */ #define LL_IT2STR(it) ((it) ? ldlm_it2str((it)->it_op) : "0") #define LUSTRE_FPRIVATE(file) ((file)->private_data) #ifdef HAVE_VFS_INTENT_PATCHES static inline struct lookup_intent *ll_nd2it(struct nameidata *nd) { return &nd->intent; } #endif struct ll_dentry_data { int lld_cwd_count; int lld_mnt_count; struct obd_client_handle lld_cwd_och; struct obd_client_handle lld_mnt_och; #ifndef HAVE_VFS_INTENT_PATCHES struct lookup_intent *lld_it; #endif }; #define ll_d2d(de) ((struct ll_dentry_data*) de->d_fsdata) extern struct file_operations ll_pgcache_seq_fops; #define LLI_INODE_MAGIC 0x111d0de5 #define LLI_INODE_DEAD 0xdeadd00d /* remote client permission cache */ #define REMOTE_PERM_HASHSIZE 16 /* llite setxid/access permission for user on remote client */ struct ll_remote_perm { struct hlist_node lrp_list; uid_t lrp_uid; gid_t lrp_gid; uid_t lrp_fsuid; gid_t lrp_fsgid; int lrp_access_perm; /* MAY_READ/WRITE/EXEC, this is access permission with lrp_fsuid/lrp_fsgid. */ }; enum lli_flags { /* MDS has an authority for the Size-on-MDS attributes. */ LLIF_MDS_SIZE_LOCK = (1 << 0), /* Epoch close is postponed. */ LLIF_EPOCH_PENDING = (1 << 1), /* DONE WRITING is allowed. */ LLIF_DONE_WRITING = (1 << 2), /* Sizeon-on-MDS attributes are changed. An attribute update needs to * be sent to MDS. */ LLIF_SOM_DIRTY = (1 << 3), }; struct ll_inode_info { int lli_inode_magic; struct semaphore lli_size_sem; /* protect open and change size */ void *lli_size_sem_owner; struct semaphore lli_write_sem; char *lli_symlink_name; __u64 lli_maxbytes; __u64 lli_ioepoch; unsigned long lli_flags; /* this lock protects posix_acl, pending_write_llaps, mmap_cnt */ spinlock_t lli_lock; struct list_head lli_pending_write_llaps; struct list_head lli_close_list; /* handle is to be sent to MDS later on done_writing and setattr. * Open handle data are needed for the recovery to reconstruct * the inode state on the MDS. XXX: recovery is not ready yet. */ struct obd_client_handle *lli_pending_och; atomic_t lli_mmap_cnt; /* for writepage() only to communicate to fsync */ int lli_async_rc; struct posix_acl *lli_posix_acl; /* remote permission hash */ struct hlist_head *lli_remote_perms; unsigned long lli_rmtperm_utime; struct semaphore lli_rmtperm_sem; struct list_head lli_dead_list; struct semaphore lli_och_sem; /* Protects access to och pointers and their usage counters */ /* We need all three because every inode may be opened in different modes */ struct obd_client_handle *lli_mds_read_och; __u64 lli_open_fd_read_count; struct obd_client_handle *lli_mds_write_och; __u64 lli_open_fd_write_count; struct obd_client_handle *lli_mds_exec_och; __u64 lli_open_fd_exec_count; struct inode lli_vfs_inode; /* identifying fields for both metadata and data stacks. */ struct lu_fid lli_fid; struct lov_stripe_md *lli_smd; /* fid capability */ /* open count currently used by capability only, indicate whether * capability needs renewal */ atomic_t lli_open_count; struct obd_capa *lli_mds_capa; struct list_head lli_oss_capas; }; /* * Locking to guarantee consistency of non-atomic updates to long long i_size, * consistency between file size and KMS, and consistency within * ->lli_smd->lsm_oinfo[]'s. * * Implemented by ->lli_size_sem and ->lsm_sem, nested in that order. */ void ll_inode_size_lock(struct inode *inode, int lock_lsm); void ll_inode_size_unlock(struct inode *inode, int unlock_lsm); // FIXME: replace the name of this with LL_I to conform to kernel stuff // static inline struct ll_inode_info *LL_I(struct inode *inode) static inline struct ll_inode_info *ll_i2info(struct inode *inode) { return container_of(inode, struct ll_inode_info, lli_vfs_inode); } /* default to about 40meg of readahead on a given system. That much tied * up in 512k readahead requests serviced at 40ms each is about 1GB/s. */ #define SBI_DEFAULT_READAHEAD_MAX (40UL << (20 - CFS_PAGE_SHIFT)) /* default to read-ahead full files smaller than 2MB on the second read */ #define SBI_DEFAULT_READAHEAD_WHOLE_MAX (2UL << (20 - CFS_PAGE_SHIFT)) enum ra_stat { RA_STAT_HIT = 0, RA_STAT_MISS, RA_STAT_DISTANT_READPAGE, RA_STAT_MISS_IN_WINDOW, RA_STAT_FAILED_GRAB_PAGE, RA_STAT_FAILED_MATCH, RA_STAT_DISCARDED, RA_STAT_ZERO_LEN, RA_STAT_ZERO_WINDOW, RA_STAT_EOF, RA_STAT_MAX_IN_FLIGHT, RA_STAT_WRONG_GRAB_PAGE, _NR_RA_STAT, }; struct ll_ra_info { unsigned long ra_cur_pages; unsigned long ra_max_pages; unsigned long ra_max_read_ahead_whole_pages; unsigned long ra_stats[_NR_RA_STAT]; }; /* LL_HIST_MAX=32 causes an overflow */ #define LL_HIST_MAX 28 #define LL_HIST_START 12 /* buckets start at 2^12 = 4k */ #define LL_PROCESS_HIST_MAX 10 struct per_process_info { pid_t pid; struct obd_histogram pp_r_hist; struct obd_histogram pp_w_hist; }; /* pp_extents[LL_PROCESS_HIST_MAX] will hold the combined process info */ struct ll_rw_extents_info { struct per_process_info pp_extents[LL_PROCESS_HIST_MAX + 1]; }; #define LL_OFFSET_HIST_MAX 100 struct ll_rw_process_info { pid_t rw_pid; int rw_op; loff_t rw_range_start; loff_t rw_range_end; loff_t rw_last_file_pos; loff_t rw_offset; size_t rw_smallest_extent; size_t rw_largest_extent; struct file *rw_last_file; }; enum stats_track_type { STATS_TRACK_ALL = 0, /* track all processes */ STATS_TRACK_PID, /* track process with this pid */ STATS_TRACK_PPID, /* track processes with this ppid */ STATS_TRACK_GID, /* track processes with this gid */ STATS_TRACK_LAST, }; /* flags for sbi->ll_flags */ #define LL_SBI_NOLCK 0x01 /* DLM locking disabled (directio-only) */ #define LL_SBI_CHECKSUM 0x02 /* checksum each page as it's written */ #define LL_SBI_FLOCK 0x04 #define LL_SBI_USER_XATTR 0x08 /* support user xattr */ #define LL_SBI_ACL 0x10 /* support ACL */ #define LL_SBI_JOIN 0x20 /* support JOIN */ #define LL_SBI_RMT_CLIENT 0x40 /* remote client */ #define LL_SBI_MDS_CAPA 0x80 /* support mds capa */ #define LL_SBI_OSS_CAPA 0x100 /* support oss capa */ #define LL_SBI_LOCALFLOCK 0x200 /* Local flocks support by kernel */ #define LL_SBI_LRU_RESIZE 0x400 /* lru resize support */ struct ll_sb_info { struct list_head ll_list; /* this protects pglist and ra_info. It isn't safe to * grab from interrupt contexts */ spinlock_t ll_lock; spinlock_t ll_pp_extent_lock; /* Lock for pp_extent entries */ spinlock_t ll_process_lock; /* Lock for ll_rw_process_info */ struct obd_uuid ll_sb_uuid; struct obd_export *ll_md_exp; struct obd_export *ll_dt_exp; struct proc_dir_entry* ll_proc_root; struct lu_fid ll_root_fid; /* root object fid */ int ll_flags; struct list_head ll_conn_chain; /* per-conn chain of SBs */ struct lustre_client_ocd ll_lco; struct list_head ll_orphan_dentry_list; /*please don't ask -p*/ struct ll_close_queue *ll_lcq; struct lprocfs_stats *ll_stats; /* lprocfs stats counter */ unsigned long ll_async_page_max; unsigned long ll_async_page_count; unsigned long ll_pglist_gen; struct list_head ll_pglist; /* all pages (llap_pglist_item) */ struct ll_ra_info ll_ra_info; unsigned int ll_namelen; struct file_operations *ll_fop; #ifdef HAVE_EXPORT___IGET struct list_head ll_deathrow; /* inodes to be destroyed (b1443) */ spinlock_t ll_deathrow_lock; #endif /* =0 - hold lock over whole read/write * >0 - max. chunk to be read/written w/o lock re-acquiring */ unsigned long ll_max_rw_chunk; /* Statistics */ struct ll_rw_extents_info ll_rw_extents_info; int ll_extent_process_count; struct ll_rw_process_info ll_rw_process_info[LL_PROCESS_HIST_MAX]; unsigned int ll_offset_process_count; struct ll_rw_process_info ll_rw_offset_info[LL_OFFSET_HIST_MAX]; unsigned int ll_rw_offset_entry_count; enum stats_track_type ll_stats_track_type; int ll_stats_track_id; int ll_rw_stats_on; dev_t ll_sdev_orig; /* save s_dev before assign for * clustred nfs */ }; #define LL_DEFAULT_MAX_RW_CHUNK (32 * 1024 * 1024) struct ll_ra_read { pgoff_t lrr_start; pgoff_t lrr_count; struct task_struct *lrr_reader; struct list_head lrr_linkage; }; /* * per file-descriptor read-ahead data. */ struct ll_readahead_state { spinlock_t ras_lock; /* * index of the last page that read(2) needed and that wasn't in the * cache. Used by ras_update() to detect seeks. * * XXX nikita: if access seeks into cached region, Lustre doesn't see * this. */ unsigned long ras_last_readpage; /* * number of pages read after last read-ahead window reset. As window * is reset on each seek, this is effectively a number of consecutive * accesses. Maybe ->ras_accessed_in_window is better name. * * XXX nikita: window is also reset (by ras_update()) when Lustre * believes that memory pressure evicts read-ahead pages. In that * case, it probably doesn't make sense to expand window to * PTLRPC_MAX_BRW_PAGES on the third access. */ unsigned long ras_consecutive_pages; /* * number of read requests after the last read-ahead window reset * As window is reset on each seek, this is effectively the number * on consecutive read request and is used to trigger read-ahead. */ unsigned long ras_consecutive_requests; /* * Parameters of current read-ahead window. Handled by * ras_update(). On the initial access to the file or after a seek, * window is reset to 0. After 3 consecutive accesses, window is * expanded to PTLRPC_MAX_BRW_PAGES. Afterwards, window is enlarged by * PTLRPC_MAX_BRW_PAGES chunks up to ->ra_max_pages. */ unsigned long ras_window_start, ras_window_len; /* * Where next read-ahead should start at. This lies within read-ahead * window. Read-ahead window is read in pieces rather than at once * because: 1. lustre limits total number of pages under read-ahead by * ->ra_max_pages (see ll_ra_count_get()), 2. client cannot read pages * not covered by DLM lock. */ unsigned long ras_next_readahead; /* * Total number of ll_file_read requests issued, reads originating * due to mmap are not counted in this total. This value is used to * trigger full file read-ahead after multiple reads to a small file. */ unsigned long ras_requests; /* * Page index with respect to the current request, these value * will not be accurate when dealing with reads issued via mmap. */ unsigned long ras_request_index; /* * list of struct ll_ra_read's one per read(2) call current in * progress against this file descriptor. Used by read-ahead code, * protected by ->ras_lock. */ struct list_head ras_read_beads; }; struct ll_file_dir { }; extern cfs_mem_cache_t *ll_file_data_slab; struct lustre_handle; struct ll_file_data { struct ll_readahead_state fd_ras; int fd_omode; struct lustre_handle fd_cwlockh; unsigned long fd_gid; struct ll_file_dir fd_dir; __u32 fd_flags; }; struct lov_stripe_md; extern spinlock_t inode_lock; extern struct proc_dir_entry *proc_lustre_fs_root; static inline struct inode *ll_info2i(struct ll_inode_info *lli) { return &lli->lli_vfs_inode; } struct it_cb_data { struct inode *icbd_parent; struct dentry **icbd_childp; obd_id hash; }; void ll_i2gids(__u32 *suppgids, struct inode *i1,struct inode *i2); #define LLAP_MAGIC 98764321 extern cfs_mem_cache_t *ll_async_page_slab; extern size_t ll_async_page_slab_size; struct ll_async_page { int llap_magic; /* only trust these if the page lock is providing exclusion */ unsigned int llap_write_queued:1, llap_defer_uptodate:1, llap_origin:3, llap_ra_used:1, llap_ignore_quota:1; void *llap_cookie; struct page *llap_page; struct list_head llap_pending_write; struct list_head llap_pglist_item; /* checksum for paranoid I/O debugging */ __u32 llap_checksum; }; /* * enumeration of llap_from_page() call-sites. Used to export statistics in * /proc/fs/lustre/llite/fsN/dump_page_cache. */ enum { LLAP_ORIGIN_UNKNOWN = 0, LLAP_ORIGIN_READPAGE, LLAP_ORIGIN_READAHEAD, LLAP_ORIGIN_COMMIT_WRITE, LLAP_ORIGIN_WRITEPAGE, LLAP_ORIGIN_REMOVEPAGE, LLAP__ORIGIN_MAX, }; extern char *llap_origins[]; #ifdef HAVE_REGISTER_CACHE #define ll_register_cache(cache) register_cache(cache) #define ll_unregister_cache(cache) unregister_cache(cache) #else #define ll_register_cache(cache) do {} while (0) #define ll_unregister_cache(cache) do {} while (0) #endif void ll_ra_read_in(struct file *f, struct ll_ra_read *rar); void ll_ra_read_ex(struct file *f, struct ll_ra_read *rar); struct ll_ra_read *ll_ra_read_get(struct file *f); /* llite/lproc_llite.c */ #ifdef LPROCFS int lprocfs_register_mountpoint(struct proc_dir_entry *parent, struct super_block *sb, char *osc, char *mdc); void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi); void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, int count); #else static inline int lprocfs_register_mountpoint(struct proc_dir_entry *parent, struct super_block *sb, char *osc, char *mdc){return 0;} static inline void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi) {} static void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, int count) {} #endif /* llite/dir.c */ extern struct file_operations ll_dir_operations; extern struct inode_operations ll_dir_inode_operations; /* llite/namei.c */ int ll_objects_destroy(struct ptlrpc_request *request, struct inode *dir); struct inode *ll_iget(struct super_block *sb, ino_t hash, struct lustre_md *lic); struct dentry *ll_find_alias(struct inode *, struct dentry *); int ll_md_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *, void *data, int flag); #ifndef HAVE_VFS_INTENT_PATCHES struct lookup_intent *ll_convert_intent(struct open_intent *oit, int lookup_flags); #endif /* llite/rw.c */ int ll_prepare_write(struct file *, struct page *, unsigned from, unsigned to); int ll_commit_write(struct file *, struct page *, unsigned from, unsigned to); int ll_writepage(struct page *page); void ll_inode_fill_obdo(struct inode *inode, int cmd, struct obdo *oa); int ll_ap_completion(void *data, int cmd, struct obdo *oa, int rc); int llap_shrink_cache(struct ll_sb_info *sbi, int shrink_fraction); struct ll_async_page *llap_from_page(struct page *page, unsigned origin); extern struct cache_definition ll_cache_definition; void ll_removepage(struct page *page); int ll_readpage(struct file *file, struct page *page); struct ll_async_page *llap_cast_private(struct page *page); void ll_readahead_init(struct inode *inode, struct ll_readahead_state *ras); void ll_ra_accounting(struct ll_async_page *llap,struct address_space *mapping); void ll_truncate(struct inode *inode); int ll_sync_page_range(struct inode *, struct address_space *, loff_t, size_t); /* llite/file.c */ extern struct file_operations ll_file_operations; extern struct file_operations ll_file_operations_flock; extern struct file_operations ll_file_operations_noflock; extern struct inode_operations ll_file_inode_operations; extern int ll_inode_revalidate_it(struct dentry *, struct lookup_intent *); extern int ll_have_md_lock(struct inode *inode, __u64 bits); extern ldlm_mode_t ll_take_md_lock(struct inode *inode, __u64 bits, struct lustre_handle *lockh); int ll_extent_lock(struct ll_file_data *, struct inode *, struct lov_stripe_md *, int mode, ldlm_policy_data_t *, struct lustre_handle *, int ast_flags); int ll_extent_unlock(struct ll_file_data *, struct inode *, struct lov_stripe_md *, int mode, struct lustre_handle *); int ll_file_open(struct inode *inode, struct file *file); int ll_file_release(struct inode *inode, struct file *file); int ll_lsm_getattr(struct obd_export *, struct lov_stripe_md *, struct obdo *); int ll_local_size(struct inode *inode); int ll_glimpse_ioctl(struct ll_sb_info *sbi, struct lov_stripe_md *lsm, lstat_t *st); int ll_glimpse_size(struct inode *inode, int ast_flags); int ll_local_open(struct file *file, struct lookup_intent *it, struct ll_file_data *fd, struct obd_client_handle *och); int ll_release_openhandle(struct dentry *, struct lookup_intent *); int ll_md_close(struct obd_export *md_exp, struct inode *inode, struct file *file); int ll_md_real_close(struct inode *inode, int flags); void ll_epoch_close(struct inode *inode, struct md_op_data *op_data, struct obd_client_handle **och, unsigned long flags); int ll_sizeonmds_update(struct inode *inode, struct md_open_data *data, struct lustre_handle *fh, __u64 ioepoch); int ll_inode_getattr(struct inode *inode, struct obdo *obdo); int ll_md_setattr(struct inode *inode, struct md_op_data *op_data, struct md_open_data **mod); void ll_pack_inode2opdata(struct inode *inode, struct md_op_data *op_data, struct lustre_handle *fh); extern void ll_rw_stats_tally(struct ll_sb_info *sbi, pid_t pid, struct file *file, size_t count, int rw); int ll_getattr_it(struct vfsmount *mnt, struct dentry *de, struct lookup_intent *it, struct kstat *stat); int ll_getattr(struct vfsmount *mnt, struct dentry *de, struct kstat *stat); struct ll_file_data *ll_file_data_get(void); int ll_inode_permission(struct inode *inode, int mask, struct nameidata *nd); int ll_lov_setstripe_ea_info(struct inode *inode, struct file *file, int flags, struct lov_user_md *lum, int lum_size); int ll_lov_getstripe_ea_info(struct inode *inode, const char *filename, struct lov_mds_md **lmm, int *lmm_size, struct ptlrpc_request **request); int ll_dir_setstripe(struct inode *inode, struct lov_user_md *lump, int set_default); int ll_dir_getstripe(struct inode *inode, struct lov_mds_md **lmm, int *lmm_size, struct ptlrpc_request **request); /* llite/dcache.c */ void ll_intent_drop_lock(struct lookup_intent *); void ll_intent_release(struct lookup_intent *); int ll_drop_dentry(struct dentry *dentry); extern void ll_set_dd(struct dentry *de); int ll_drop_dentry(struct dentry *dentry); void ll_unhash_aliases(struct inode *); void ll_frob_intent(struct lookup_intent **itp, struct lookup_intent *deft); void ll_lookup_finish_locks(struct lookup_intent *it, struct dentry *dentry); int ll_dcompare(struct dentry *parent, struct qstr *d_name, struct qstr *name); int ll_revalidate_it_finish(struct ptlrpc_request *request, int offset, struct lookup_intent *it, struct dentry *de); /* llite/llite_lib.c */ extern struct super_operations lustre_super_operations; char *ll_read_opt(const char *opt, char *data); void ll_lli_init(struct ll_inode_info *lli); int ll_fill_super(struct super_block *sb); void ll_put_super(struct super_block *sb); void ll_kill_super(struct super_block *sb); struct inode *ll_inode_from_lock(struct ldlm_lock *lock); void ll_clear_inode(struct inode *inode); int ll_setattr_raw(struct inode *inode, struct iattr *attr); int ll_setattr(struct dentry *de, struct iattr *attr); #ifndef HAVE_STATFS_DENTRY_PARAM int ll_statfs(struct super_block *sb, struct kstatfs *sfs); #else int ll_statfs(struct dentry *de, struct kstatfs *sfs); #endif int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs, __u64 max_age); void ll_update_inode(struct inode *inode, struct lustre_md *md); void ll_read_inode2(struct inode *inode, void *opaque); void ll_delete_inode(struct inode *inode); int ll_iocontrol(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg); int ll_flush_ctx(struct inode *inode); #ifdef HAVE_UMOUNTBEGIN_VFSMOUNT void ll_umount_begin(struct vfsmount *vfsmnt, int flags); #else void ll_umount_begin(struct super_block *sb); #endif int ll_remount_fs(struct super_block *sb, int *flags, char *data); int ll_prep_inode(struct inode **inode, struct ptlrpc_request *req, int offset, struct super_block *); void lustre_dump_dentry(struct dentry *, int recur); void lustre_dump_inode(struct inode *); struct ll_async_page *llite_pglist_next_llap(struct ll_sb_info *sbi, struct list_head *list); int ll_obd_statfs(struct inode *inode, void *arg); int ll_get_max_mdsize(struct ll_sb_info *sbi, int *max_mdsize); int ll_process_config(struct lustre_cfg *lcfg); int ll_ioctl_getfacl(struct inode *inode, struct rmtacl_ioctl_data *ioc); int ll_ioctl_setfacl(struct inode *inode, struct rmtacl_ioctl_data *ioc); struct md_op_data *ll_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 *data); void ll_finish_md_op_data(struct md_op_data *op_data); /* llite/llite_nfs.c */ extern struct export_operations lustre_export_operations; __u32 get_uuid2int(const char *name, int len); struct dentry *ll_fh_to_dentry(struct super_block *sb, __u32 *data, int len, int fhtype, int parent); int ll_dentry_to_fh(struct dentry *, __u32 *datap, int *lenp, int need_parent); /* llite/special.c */ extern struct inode_operations ll_special_inode_operations; extern struct file_operations ll_special_chr_inode_fops; extern struct file_operations ll_special_chr_file_fops; extern struct file_operations ll_special_blk_inode_fops; extern struct file_operations ll_special_fifo_inode_fops; extern struct file_operations ll_special_fifo_file_fops; extern struct file_operations ll_special_sock_inode_fops; /* llite/symlink.c */ extern struct inode_operations ll_fast_symlink_inode_operations; /* llite/llite_close.c */ struct ll_close_queue { spinlock_t lcq_lock; struct list_head lcq_head; wait_queue_head_t lcq_waitq; struct completion lcq_comp; atomic_t lcq_stop; }; void llap_write_pending(struct inode *inode, struct ll_async_page *llap); int llap_write_complete(struct inode *inode, struct ll_async_page *llap); int ll_inode_dirty(struct inode *inode, unsigned long flags); void ll_queue_done_writing(struct inode *inode, unsigned long flags); void ll_close_thread_shutdown(struct ll_close_queue *lcq); int ll_close_thread_start(struct ll_close_queue **lcq_ret); /* llite/llite_mmap.c */ typedef struct rb_root rb_root_t; typedef struct rb_node rb_node_t; struct ll_lock_tree_node; struct ll_lock_tree { rb_root_t lt_root; struct list_head lt_locked_list; struct ll_file_data *lt_fd; }; int ll_teardown_mmaps(struct address_space *mapping, __u64 first, __u64 last); int ll_file_mmap(struct file * file, struct vm_area_struct * vma); struct ll_lock_tree_node * ll_node_from_inode(struct inode *inode, __u64 start, __u64 end, ldlm_mode_t mode); int ll_tree_lock(struct ll_lock_tree *tree, struct ll_lock_tree_node *first_node, const char *buf, size_t count, int ast_flags); int ll_tree_unlock(struct ll_lock_tree *tree); #define ll_s2sbi(sb) (s2lsi(sb)->lsi_llsbi) void __d_rehash(struct dentry * entry, int lock); static inline __u64 ll_ts2u64(struct timespec *time) { __u64 t = time->tv_sec; return t; } /* don't need an addref as the sb_info should be holding one */ static inline struct obd_export *ll_s2dtexp(struct super_block *sb) { return ll_s2sbi(sb)->ll_dt_exp; } /* don't need an addref as the sb_info should be holding one */ static inline struct obd_export *ll_s2mdexp(struct super_block *sb) { return ll_s2sbi(sb)->ll_md_exp; } static inline struct client_obd *sbi2mdc(struct ll_sb_info *sbi) { struct obd_device *obd = sbi->ll_md_exp->exp_obd; if (obd == NULL) LBUG(); return &obd->u.cli; } // FIXME: replace the name of this with LL_SB to conform to kernel stuff static inline struct ll_sb_info *ll_i2sbi(struct inode *inode) { return ll_s2sbi(inode->i_sb); } static inline struct obd_export *ll_i2dtexp(struct inode *inode) { return ll_s2dtexp(inode->i_sb); } static inline struct obd_export *ll_i2mdexp(struct inode *inode) { return ll_s2mdexp(inode->i_sb); } static inline struct lu_fid *ll_inode2fid(struct inode *inode) { struct lu_fid *fid; LASSERT(inode != NULL); fid = &ll_i2info(inode)->lli_fid; LASSERT(fid_is_igif(fid) || fid_ver(fid) == 0); return fid; } static inline int ll_mds_max_easize(struct super_block *sb) { return sbi2mdc(ll_s2sbi(sb))->cl_max_mds_easize; } static inline __u64 ll_file_maxbytes(struct inode *inode) { return ll_i2info(inode)->lli_maxbytes; } /* llite/xattr.c */ int ll_setxattr(struct dentry *dentry, const char *name, const void *value, size_t size, int flags); ssize_t ll_getxattr(struct dentry *dentry, const char *name, void *buffer, size_t size); ssize_t ll_listxattr(struct dentry *dentry, char *buffer, size_t size); int ll_removexattr(struct dentry *dentry, const char *name); /* llite/remote_perm.c */ extern cfs_mem_cache_t *ll_remote_perm_cachep; extern cfs_mem_cache_t *ll_rmtperm_hash_cachep; struct hlist_head *alloc_rmtperm_hash(void); void free_rmtperm_hash(struct hlist_head *hash); int ll_update_remote_perm(struct inode *inode, struct mdt_remote_perm *perm); int lustre_check_remote_perm(struct inode *inode, int mask); /* llite/llite_fid.c */ ino_t ll_fid_build_ino(struct ll_sb_info *sbi, struct lu_fid *fid); /* llite/llite_capa.c */ extern cfs_timer_t ll_capa_timer; int ll_capa_thread_start(void); void ll_capa_thread_stop(void); void ll_capa_timer_callback(unsigned long unused); struct obd_capa *ll_add_capa(struct inode *inode, struct obd_capa *ocapa); int ll_update_capa(struct obd_capa *ocapa, struct lustre_capa *capa); void ll_capa_open(struct inode *inode); void ll_capa_close(struct inode *inode); struct obd_capa *ll_mdscapa_get(struct inode *inode); struct obd_capa *ll_osscapa_get(struct inode *inode, __u64 opc); void ll_truncate_free_capa(struct obd_capa *ocapa); void ll_clear_inode_capas(struct inode *inode); void ll_print_capa_stat(struct ll_sb_info *sbi); /* llite ioctl register support rountine */ #ifdef __KERNEL__ enum llioc_iter { LLIOC_CONT = 0, LLIOC_STOP }; #define LLIOC_MAX_CMD 256 /* * Rules to write a callback function: * * Parameters: * @magic: Dynamic ioctl call routine will feed this vaule with the pointer * returned to ll_iocontrol_register. Callback functions should use this * data to check the potential collasion of ioctl cmd. If collasion is * found, callback function should return LLIOC_CONT. * @rcp: The result of ioctl command. * * Return values: * If @magic matches the pointer returned by ll_iocontrol_data, the * callback should return LLIOC_STOP; return LLIOC_STOP otherwise. */ typedef enum llioc_iter (*llioc_callback_t)(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg, void *magic, int *rcp); enum llioc_iter ll_iocontrol_call(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg, int *rcp); /* export functions */ /* Register ioctl block dynamatically for a regular file. * * @cmd: the array of ioctl command set * @count: number of commands in the @cmd * @cb: callback function, it will be called if an ioctl command is found to * belong to the command list @cmd. * * Return vaule: * A magic pointer will be returned if success; * otherwise, NULL will be returned. * */ void *ll_iocontrol_register(llioc_callback_t cb, int count, unsigned int *cmd); void ll_iocontrol_unregister(void *magic); #endif #endif /* LLITE_INTERNAL_H */