+/* -*- 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 <linux/fs.h>
+#include <linux/list.h>
+#include <linux/smp_lock.h>
+#include <linux/proc_fs.h>
-
-struct obd_conn_info {
- unsigned int conn_id; /* handle */
-};
+#include <linux/lustre_lib.h>
+#include <linux/lustre_idl.h>
+#include <linux/lustre_mds.h>
+#include <linux/lustre_export.h>
struct obd_type {
struct list_head typ_chain;
int typ_refcnt;
};
-#define OBD_MAGIC 0xffff0000
-#define OBD_MAGIC_MASK 0xffff0000
+struct brw_page {
+ struct page *pg;
+ obd_size count;
+ obd_off off;
+ obd_flag flag;
+};
+
+struct lov_oinfo { /* per-child structure */
+ __u64 loi_id;
+ __u64 loi_size;
+};
+
+struct lov_stripe_md {
+ __u32 lmd_magic;
+ __u32 lmd_easize; /* packed size for MDS of ea */
+ __u64 lmd_object_id; /* lov object id */
+ __u64 lmd_stripe_offset; /* offset of the stripe */
+ __u64 lmd_stripe_size; /* size of the stripe */
+ __u32 lmd_stripe_count; /* how many objects are being striped */
+ __u32 lmd_stripe_pattern; /* per-lov object stripe pattern */
+ struct lov_oinfo lmd_oinfo[0];
+};
+
+struct lov_stripe_md_one {
+ __u32 lmd_magic;
+ __u32 lmd_easize; /* packed size for MDS of ea */
+ __u64 lmd_object_id; /* lov object id */
+ __u64 lmd_stripe_offset; /* offset of the stripe */
+ __u64 lmd_stripe_size; /* size of the stripe */
+ __u32 lmd_stripe_count; /* how many objects are being striped */
+ __u32 lmd_stripe_pattern; /* per-lov object stripe pattern */
+ struct lov_oinfo lmd_oinfo[1];
+};
+
+/* Individual type definitions */
+
+struct ext2_obd {
+ struct super_block *e2_sb;
+ struct vfsmount *e2_vfsmnt;
+};
+
+#define OBD_RUN_CTXT_MAGIC 0xC0FFEEAA
+#define OBD_CTXT_DEBUG /* development-only debugging */
+struct obd_run_ctxt {
+ struct vfsmount *pwdmnt;
+ struct dentry *pwd;
+ mm_segment_t fs;
+#ifdef OBD_CTXT_DEBUG
+ __u32 magic;
+#endif
+};
+
+#ifdef OBD_CTXT_DEBUG
+#define OBD_SET_CTXT_MAGIC(ctxt) (ctxt)->magic = OBD_RUN_CTXT_MAGIC
+#else
+#define OBD_SET_CTXT_MAGIC(ctxt) do {} while(0)
+#endif
+
+struct filter_obd {
+ char *fo_fstype;
+ struct super_block *fo_sb;
+ struct vfsmount *fo_vfsmnt;
+ struct obd_run_ctxt fo_ctxt;
+ struct dentry *fo_dentry_O;
+ struct dentry *fo_dentry_O_mode[16];
+ 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_server_data;
+
+struct client_obd {
+ struct obd_import cl_import;
+ struct semaphore cl_sem;
+ int cl_conn_count;
+ __u8 cl_target_uuid[37]; /* XXX -> lustre_name */
+ int cl_max_mdsize;
+};
+
+struct mds_obd {
+ struct ptlrpc_service *mds_service;
+
+ char *mds_fstype;
+ struct super_block *mds_sb;
+ struct super_operations *mds_sop;
+ 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;
+ int mds_max_mdsize;
+ struct file *mds_rcvd_filp;
+ spinlock_t mds_last_lock;
+ __u64 mds_last_committed;
+ __u64 mds_last_rcvd;
+ __u64 mds_mount_count;
+ struct ll_fid mds_rootfid;
+ struct mds_server_data *mds_server_data;
+};
+
+struct ldlm_obd {
+ struct ptlrpc_service *ldlm_service;
+ struct ptlrpc_client *ldlm_client;
+ struct ptlrpc_connection *ldlm_server_conn;
+};
+
+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 recovd_obd {
+ __u32 recovd_phase;
+ __u32 recovd_next_phase;
+ __u32 recovd_flags;
+ struct recovd_data *recovd_current_rd;
+ spinlock_t recovd_lock;
+ struct list_head recovd_managed_items; /* items managed */
+ struct list_head recovd_troubled_items; /* items in trouble */
+ wait_queue_head_t recovd_recovery_waitq;
+ wait_queue_head_t recovd_ctl_waitq;
+ wait_queue_head_t recovd_waitq;
+ struct task_struct *recovd_thread;
+};
+
+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;
+};
+
+#endif
+
+struct ost_obd {
+ struct ptlrpc_service *ost_service;
+ struct lustre_handle ost_conn; /* the local connection to the OBD */
+};
+
+
+struct lov_tgt_desc {
+ uuid_t uuid;
+ struct lustre_handle conn;
+};
+
+struct lov_obd {
+ struct obd_device *mdcobd;
+ struct lov_desc desc;
+ int bufsize;
+ struct lov_tgt_desc *tgts;
+};
+
+struct niobuf_local {
+ __u64 offset;
+ __u32 len;
+ __u32 xid;
+ __u32 flags;
+ void *addr;
+ struct page *page;
+ void *target_private;
+ struct dentry *dentry;
+};
+
+#define N_LOCAL_TEMP_PAGE 0x00000001
+
+/* corresponds to one of the obd's */
+struct obd_device {
+ struct obd_type *obd_type;
+
+ /* common and UUID name of this device */
+ char *obd_name;
+ __u8 obd_uuid[37];
+
+ int obd_minor;
+ int obd_flags;
+ struct proc_dir_entry *obd_proc_entry;
+ struct list_head obd_exports;
+ struct list_head obd_imports;
+ struct ldlm_namespace *obd_namespace;
+ struct ptlrpc_client obd_ldlm_client; /* XXX OST/MDS only */
+ /* a spinlock is OK for what we do now, may need a semaphore later */
+ spinlock_t obd_dev_lock;
+ union {
+ struct ext2_obd ext2;
+ struct filter_obd filter;
+ struct mds_obd mds;
+ struct client_obd cli;
+ struct ost_obd ost;
+ // struct osc_obd osc;
+ struct ldlm_obd ldlm;
+ struct echo_obd echo;
+ struct recovd_obd recovd;
+ struct trace_obd trace;
+ struct lov_obd lov;
+#if 0
+ struct snap_obd snap;
+#endif
+ } u;
+};
+
+struct io_cb_data;
+
+struct obd_ops {
+ int (*o_iocontrol)(long cmd, struct lustre_handle *, int len,
+ void *karg, void *uarg);
+ int (*o_get_info)(struct lustre_handle *, obd_count keylen, void *key,
+ obd_count *vallen, void **val);
+ int (*o_set_info)(struct lustre_handle *, 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 lustre_handle *conn, struct obd_device *src,
+ char *cluuid);
+ int (*o_disconnect)(struct lustre_handle *conn);
+
+
+ int (*o_statfs)(struct lustre_handle *conn, struct statfs *statfs);
+ int (*o_preallocate)(struct lustre_handle *, obd_count *req,
+ obd_id *ids);
+ int (*o_create)(struct lustre_handle *conn, struct obdo *oa,
+ struct lov_stripe_md **ea);
+ int (*o_destroy)(struct lustre_handle *conn, struct obdo *oa,
+ struct lov_stripe_md *ea);
+ int (*o_setattr)(struct lustre_handle *conn, struct obdo *oa,
+ struct lov_stripe_md *ea);
+ int (*o_getattr)(struct lustre_handle *conn, struct obdo *oa,
+ struct lov_stripe_md *ea);
+ int (*o_open)(struct lustre_handle *conn, struct obdo *oa,
+ struct lov_stripe_md *);
+ int (*o_close)(struct lustre_handle *conn, struct obdo *oa,
+ struct lov_stripe_md *);
+ int (*o_brw)(int rw, struct lustre_handle *conn,
+ struct lov_stripe_md *md, obd_count oa_bufs,
+ struct brw_page *pgarr, brw_callback_t callback,
+ struct io_cb_data *data);
+ int (*o_punch)(struct lustre_handle *conn, struct obdo *tgt,
+ struct lov_stripe_md *md, obd_size count,
+ obd_off offset);
+ int (*o_sync)(struct lustre_handle *conn, struct obdo *tgt,
+ obd_size count, obd_off offset);
+ int (*o_migrate)(struct lustre_handle *conn, struct obdo *dst,
+ struct obdo *src, obd_size count, obd_off offset);
+ int (*o_copy)(struct lustre_handle *dstconn, struct obdo *dst,
+ struct lustre_handle *srconn, struct obdo *src,
+ obd_size count, obd_off offset);
+ int (*o_iterate)(struct lustre_handle *conn,
+ int (*)(obd_id, obd_gr, void *),
+ obd_id *startid, obd_gr group, void *data);
+ int (*o_preprw)(int cmd, struct lustre_handle *conn,
+ int objcount, struct obd_ioobj *obj,
+ int niocount, struct niobuf_remote *remote,
+ struct niobuf_local *local, void **desc_private);
+ int (*o_commitrw)(int cmd, struct lustre_handle *conn,
+ int objcount, struct obd_ioobj *obj,
+ int niocount, struct niobuf_local *local,
+ void *desc_private);
+ int (*o_enqueue)(struct lustre_handle *conn, struct lov_stripe_md *md,
+ struct lustre_handle *parent_lock,
+ __u32 type, void *cookie, int cookielen, __u32 mode,
+ int *flags, void *cb, void *data, int datalen,
+ struct lustre_handle *lockh);
+ int (*o_cancel)(struct lustre_handle *, struct lov_stripe_md *md, __u32 mode, struct lustre_handle *);
+};
+
+#if BITS_PER_LONG > 32
+#define LPU64 "%lu"
+#define LPD64 "%ld"
+#define LPX64 "%lx"
+#else
+#define LPU64 "%Lu"
+#define LPD64 "%Ld"
+#define LPX64 "%Lx"
+#endif
+
+static inline void *mds_fs_start(struct mds_obd *mds, struct inode *inode,
+ int op)
+{
+ return mds->mds_fsops->fs_start(inode, op);
+}
+
+static inline int mds_fs_commit(struct mds_obd *mds, struct inode *inode,
+ void *handle)
+{
+ return mds->mds_fsops->fs_commit(inode, handle);
+}
+
+static inline int mds_fs_setattr(struct mds_obd *mds, struct dentry *dentry,
+ void *handle, struct iattr *iattr)
+{
+ int rc;
+ /*
+ * NOTE: we probably don't need to take i_sem here when changing
+ * ATTR_SIZE because the MDS never needs to truncate a file.
+ * The ext2/ext3 code never truncates a directory, and files
+ * stored on the MDS are entirely sparse (no data blocks).
+ * If we do need to get it, we can do it here.
+ */
+ lock_kernel();
+ rc = mds->mds_fsops->fs_setattr(dentry, handle, iattr);
+ unlock_kernel();
+
+ return rc;
+}
+
+static inline int mds_fs_set_md(struct mds_obd *mds, struct inode *inode,
+ void *handle, struct lov_mds_md *md)
+{
+ return mds->mds_fsops->fs_set_md(inode, handle, md);
+}
+
+static inline int mds_fs_get_md(struct mds_obd *mds, struct inode *inode,
+ struct lov_mds_md *md)
+{
+ return mds->mds_fsops->fs_get_md(inode, md);
+}
+
+static inline ssize_t mds_fs_readpage(struct mds_obd *mds, struct file *file,
+ char *buf, size_t count, loff_t *offset)
+{
+ return mds->mds_fsops->fs_readpage(file, buf, count, offset);
+}
+
+/* Set up callback to update mds->mds_last_committed with the current
+ * value of mds->mds_last_recieved when this transaction is on disk.
+ */
+static inline int mds_fs_set_last_rcvd(struct mds_obd *mds, void *handle)
+{
+ return mds->mds_fsops->fs_set_last_rcvd(mds, handle);
+}
+
+/* Enable data journaling on the given file */
+static inline ssize_t mds_fs_journal_data(struct mds_obd *mds,
+ struct file *file)
+{
+ return mds->mds_fsops->fs_journal_data(file);
+}
+static inline int mds_fs_statfs(struct mds_obd *mds, struct statfs *sfs)
+{
+ if (mds->mds_fsops->fs_statfs)
+ return mds->mds_fsops->fs_statfs(mds->mds_sb, sfs);
+ return vfs_statfs(mds->mds_sb, sfs);
+}
#endif
git://git.whamcloud.com / fs / lustre-release.git / blobdiff