/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- * vim:expandtab:shiftwidth=8:tabstop=8: * * * Copyright (C) 2001 Cluster File Systems, Inc. * * This code is issued under the GNU General Public License. * See the file COPYING in this distribution */ #ifndef __OBD_H #define __OBD_H #include #include #include #include struct obd_conn_info { unsigned int conn_id; /* handle */ }; struct obd_type { struct list_head typ_chain; struct obd_ops *typ_ops; char *typ_name; int typ_refcnt; }; struct obd_run_ctxt { struct vfsmount *pwdmnt; struct dentry *pwd; mm_segment_t fs; }; struct obd_conn { struct obd_device *oc_dev; uint32_t oc_id; }; struct obd_devicename { uint32_t len; char * name; struct dentry *dentry; /* file system obd device names */ __u8 _uuid[16]; /* uuid obd device names */ }; /* Individual type definitions */ struct ext2_obd { struct super_block * e2_sb; struct vfsmount *e2_vfsmnt; }; struct filter_obd { char *fo_fstype; struct super_block * fo_sb; struct vfsmount *fo_vfsmnt; struct obd_run_ctxt fo_ctxt; spinlock_t fo_lock; __u64 fo_lastino; struct file_operations *fo_fop; struct inode_operations *fo_iop; struct address_space_operations *fo_aops; }; struct mds_obd { struct ptlrpc_service *mds_service; char *mds_fstype; struct super_block * mds_sb; struct vfsmount *mds_vfsmnt; struct obd_run_ctxt mds_ctxt; struct file_operations *mds_fop; struct inode_operations *mds_iop; struct address_space_operations *mds_aops; struct mds_fs_operations *mds_fsops; }; struct ldlm_obd { struct ptlrpc_service *ldlm_service; struct list_head ldlm_namespaces; spinlock_t ldlm_lock; }; struct echo_obd { char *eo_fstype; struct super_block *eo_sb; struct vfsmount *eo_vfsmnt; struct obd_run_ctxt eo_ctxt; spinlock_t eo_lock; __u64 eo_lastino; struct file_operations *eo_fop; struct inode_operations *eo_iop; struct address_space_operations *eo_aops; }; struct trace_obd { struct obdtrace_opstats *stats; }; #if 0 struct snap_obd { unsigned int snap_index; /* which snapshot index are we accessing */ int snap_tableno; }; struct raid1_obd { unsigned int raid1_count; /* how many replicas */ /* devices to replicate on */ struct obd_device *raid1_devlist[MAX_RAID1]; /* connections we make */ struct obd_conn_info raid1_connections[MAX_RAID1]; struct list_head raid1_clients; /* clients we have */ }; #endif struct ost_obd { struct ptlrpc_service *ost_service; struct obd_device *ost_tgt; struct obd_conn ost_conn; }; struct osc_obd { struct obd_device *osc_tgt; struct ptlrpc_client *osc_peer; }; /* corresponds to one of the obd's */ #define MAX_MULTI 16 struct obd_device { struct obd_type *obd_type; int obd_minor; int obd_flags; int obd_refcnt; struct obd_devicename obd_fsname; struct proc_dir_entry *obd_proc_entry; int obd_multi_count; struct obd_conn obd_multi_conn[MAX_MULTI]; unsigned int obd_gen_last_id; unsigned long obd_gen_prealloc_quota; struct list_head obd_gen_clients; struct list_head obd_req_list; wait_queue_head_t obd_req_waitq; union { struct ext2_obd ext2; struct filter_obd filter; struct mds_obd mds; struct ost_obd ost; struct osc_obd osc; struct ldlm_obd ldlm; struct echo_obd echo; struct trace_obd trace; #if 0 struct raid1_obd raid1; struct snap_obd snap; #endif } u; }; struct obd_ops { int (*o_iocontrol)(int cmd, struct obd_conn *, int len, void *karg, void *uarg); int (*o_get_info)(struct obd_conn *, obd_count keylen, void *key, obd_count *vallen, void **val); int (*o_set_info)(struct obd_conn *, obd_count keylen, void *key, obd_count vallen, void *val); int (*o_attach)(struct obd_device *dev, obd_count len, void *data); int (*o_detach)(struct obd_device *dev); int (*o_setup) (struct obd_device *dev, obd_count len, void *data); int (*o_cleanup)(struct obd_device *dev); int (*o_connect)(struct obd_conn *conn); int (*o_disconnect)(struct obd_conn *conn); int (*o_statfs)(struct obd_conn *conn, struct statfs *statfs); int (*o_preallocate)(struct obd_conn *, obd_count *req, obd_id *ids); int (*o_create)(struct obd_conn *conn, struct obdo *oa); int (*o_destroy)(struct obd_conn *conn, struct obdo *oa); int (*o_setattr)(struct obd_conn *conn, struct obdo *oa); int (*o_getattr)(struct obd_conn *conn, struct obdo *oa); int (*o_open)(struct obd_conn *conn, struct obdo *oa); int (*o_close)(struct obd_conn *conn, struct obdo *oa); int (*o_read)(struct obd_conn *conn, struct obdo *oa, char *buf, obd_size *count, obd_off offset); int (*o_write)(struct obd_conn *conn, struct obdo *oa, char *buf, obd_size *count, obd_off offset); int (*o_brw)(int rw, struct obd_conn *conn, obd_count num_oa, struct obdo **oa, obd_count *oa_bufs, struct page **buf, obd_size *count, obd_off *offset, obd_flag *flags); int (*o_punch)(struct obd_conn *conn, struct obdo *tgt, obd_size count, obd_off offset); int (*o_sync)(struct obd_conn *conn, struct obdo *tgt, obd_size count, obd_off offset); int (*o_migrate)(struct obd_conn *conn, struct obdo *dst, struct obdo *src, obd_size count, obd_off offset); int (*o_copy)(struct obd_conn *dstconn, struct obdo *dst, struct obd_conn *srconn, struct obdo *src, obd_size count, obd_off offset); int (*o_iterate)(struct obd_conn *conn, int (*)(obd_id, obd_gr, void *), obd_id *startid, obd_gr group, void *data); int (*o_preprw)(int cmd, struct obd_conn *conn, int objcount, struct obd_ioobj *obj, int niocount, struct niobuf *nb, struct niobuf *res); int (*o_commitrw)(int cmd, struct obd_conn *conn, int objcount, struct obd_ioobj *obj, int niocount, struct niobuf *res); }; #endif