/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- * vim:expandtab:shiftwidth=8:tabstop=8: * * Copyright (C) 2001 Cluster File Systems, Inc. * * This file is part of Lustre, http://www.lustre.org. * * Lustre is free software; you can redistribute it and/or * modify it under the terms of version 2 of the GNU General Public * License as published by the Free Software Foundation. * * Lustre is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with Lustre; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * * MDS data structures. * See also lustre_idl.h for wire formats of requests. * */ #ifndef _LUSTRE_MDS_H #define _LUSTRE_MDS_H #ifdef __KERNEL__ #include #include struct ldlm_lock_desc; struct lov_stripe_md; struct mds_obd; struct ptlrpc_connection; struct ptlrpc_client; struct obd_export; struct ptlrpc_request; struct obd_device; #define LUSTRE_MDS_NAME "mds" #define LUSTRE_MDT_NAME "mdt" #define LUSTRE_MDC_NAME "mdc" struct mds_update_record { __u32 ur_fsuid; __u32 ur_fsgid; __u32 ur_opcode; struct ll_fid *ur_fid1; struct ll_fid *ur_fid2; int ur_namelen; char *ur_name; int ur_tgtlen; char *ur_tgt; struct iattr ur_iattr; __u64 ur_rdev; __u32 ur_mode; __u32 ur_uid; __u32 ur_gid; __u64 ur_time; }; #define MDS_LR_CLIENT 8192 #define MDS_LR_SIZE 128 #define MDS_CLIENT_SLOTS 17 #define MDS_MOUNT_RECOV 2 /* Data stored per server at the head of the last_rcvd file. In le32 order. */ struct mds_server_data { __u8 msd_uuid[37]; /* server UUID */ __u8 uuid_padding[3]; /* unused */ __u64 msd_last_rcvd; /* last completed transaction ID */ __u64 msd_mount_count; /* MDS incarnation number */ __u8 padding[512 - 56]; }; /* Data stored per client in the last_rcvd file. In le32 order. */ struct mds_client_data { __u8 mcd_uuid[37]; /* client UUID */ __u8 uuid_padding[3]; /* unused */ __u64 mcd_last_rcvd; /* last completed transaction ID */ __u64 mcd_mount_count; /* MDS incarnation number */ __u64 mcd_last_xid; /* client RPC xid for the last transaction */ __u8 padding[MDS_LR_SIZE - 64]; }; /* In-memory access to client data from MDS struct */ struct mds_export_data { struct list_head med_open_head; spinlock_t med_open_lock; struct mds_client_data *med_mcd; int med_off; }; /* file data for open files on MDS */ struct mds_file_data { struct list_head mfd_list; struct lustre_handle mfd_clienthandle; __u64 mfd_servercookie; struct file *mfd_file; }; /* mds/mds_reint.c */ int mds_reint_rec(struct mds_update_record *r, int offset, struct ptlrpc_request *req); /* lib/mds_updates.c */ void mds_unpack_body(struct mds_body *b); void mds_unpack_fid(struct ll_fid *fid); void mds_pack_fid(struct ll_fid *fid); void mds_pack_req_body(struct ptlrpc_request *); void mds_pack_rep_body(struct ptlrpc_request *); int mds_update_unpack(struct ptlrpc_request *, int offset, struct mds_update_record *); void mds_getattr_pack(struct ptlrpc_request *req, int offset, struct inode *inode, const char *name, int namelen); void mds_setattr_pack(struct ptlrpc_request *, int offset, struct inode *, struct iattr *, const char *name, int namelen); void mds_create_pack(struct ptlrpc_request *, int offset, struct inode *, __u32 mode, __u64 id, __u32 uid, __u32 gid, __u64 time, const char *name, int namelen, const char *tgt, int tgtlen); void mds_unlink_pack(struct ptlrpc_request *, int offset, struct inode *inode, struct inode *child, __u32 mode, const char *name, int namelen); void mds_link_pack(struct ptlrpc_request *, int offset, struct inode *ino, struct inode *dir, const char *name, int namelen); void mds_rename_pack(struct ptlrpc_request *, int offset, struct inode *srcdir, struct inode *tgtdir, const char *name, int namelen, const char *tgt, int tgtlen); void mds_pack_inode2fid(struct ll_fid *fid, struct inode *inode); void mds_pack_inode2body(struct mds_body *body, struct inode *inode); /* mds/handler.c */ struct dentry *mds_name2locked_dentry(struct obd_device *, struct dentry *dir, struct vfsmount **mnt, char *name, int namelen, int lock_mode, struct lustre_handle *lockh, int dir_lock_mode); struct dentry *mds_fid2locked_dentry(struct obd_device *obd, struct ll_fid *fid, struct vfsmount **mnt, int lock_mode, struct lustre_handle *lockh); struct dentry *mds_fid2dentry(struct mds_obd *mds, struct ll_fid *fid, struct vfsmount **mnt); int mds_reint(int offset, struct ptlrpc_request *req); /* mdc/mdc_request.c */ int mdc_enqueue(struct lustre_handle *conn, int lock_type, struct lookup_intent *it, int lock_mode, struct inode *dir, struct dentry *de, struct lustre_handle *lockh, char *tgt, int tgtlen, void *data, int datalen); int mdc_cancel_unused(struct lustre_handle *conn, struct inode *, int flags); int mdc_getlovinfo(struct obd_device *obd, struct lustre_handle *mdc_connh, struct ptlrpc_request **request); int mdc_getstatus(struct lustre_handle *conn, struct ll_fid *rootfid); int mdc_getattr(struct lustre_handle *conn, obd_id ino, int type, unsigned long valid, size_t ea_size, struct ptlrpc_request **request); int mdc_setattr(struct lustre_handle *conn, struct inode *, struct iattr *iattr, struct ptlrpc_request **); int mdc_open(struct lustre_handle *conn, obd_id ino, int type, int flags, struct lov_stripe_md *, struct lustre_handle *fh, struct ptlrpc_request **); int mdc_close(struct lustre_handle *conn, obd_id ino, int type, struct lustre_handle *fh, struct ptlrpc_request **req); int mdc_readpage(struct lustre_handle *conn, obd_id ino, int type, __u64 offset, char *addr, struct ptlrpc_request **); int mdc_create(struct lustre_handle *conn, struct inode *dir, const char *name, int namelen, const char *tgt, int tgtlen, int mode, __u32 uid, __u32 gid, __u64 time, __u64 rdev, struct lov_stripe_md *md, struct ptlrpc_request **); int mdc_unlink(struct lustre_handle *, struct inode *dir, struct inode *child, __u32 mode, const char *name, int namelen, struct ptlrpc_request **); int mdc_link(struct lustre_handle *conn, struct dentry *src, struct inode *dir, const char *name, int namelen, struct ptlrpc_request **); int mdc_rename(struct lustre_handle *conn, struct inode *src, struct inode *tgt, const char *old, int oldlen, const char *new, int newlen, struct ptlrpc_request **); int mdc_create_client(obd_uuid_t uuid, struct ptlrpc_client *cl); void mdc_store_create_replay_data(struct ptlrpc_request *req, struct super_block *sb); extern int mds_client_add(struct mds_export_data *med, int cl_off); extern int mds_client_free(struct obd_export *exp); /* mds/mds_fs.c */ struct mds_fs_operations { struct module *fs_owner; void *(* fs_start)(struct inode *inode, int op); int (* fs_commit)(struct inode *inode, void *handle); int (* fs_setattr)(struct dentry *dentry, void *handle, struct iattr *iattr); int (* fs_set_md)(struct inode *inode, void *handle, struct lov_mds_md *md); int (* fs_get_md)(struct inode *inode, struct lov_mds_md *md); ssize_t (* fs_readpage)(struct file *file, char *buf, size_t count, loff_t *offset); void (* fs_delete_inode)(struct inode *inode); void (* cl_delete_inode)(struct inode *inode); int (* fs_journal_data)(struct file *file); int (* fs_set_last_rcvd)(struct mds_obd *mds, void *handle); int (* fs_statfs)(struct super_block *sb, struct statfs *sfs); }; extern int mds_register_fs_type(struct mds_fs_operations *op, const char *name); extern void mds_unregister_fs_type(const char *name); extern int mds_fs_setup(struct obd_device *obddev, struct vfsmount *mnt); extern void mds_fs_cleanup(struct obd_device *obddev); #define MDS_FSOP_UNLINK 1 #define MDS_FSOP_RMDIR 2 #define MDS_FSOP_RENAME 3 #define MDS_FSOP_CREATE 4 #define MDS_FSOP_MKDIR 5 #define MDS_FSOP_SYMLINK 6 #define MDS_FSOP_MKNOD 7 #define MDS_FSOP_SETATTR 8 #define MDS_FSOP_LINK 9 #endif /* __KERNEL__ */ /* ioctls for trying requests */ #define IOC_REQUEST_TYPE 'f' #define IOC_REQUEST_MIN_NR 30 #define IOC_REQUEST_GETATTR _IOWR('f', 30, long) #define IOC_REQUEST_READPAGE _IOWR('f', 31, long) #define IOC_REQUEST_SETATTR _IOWR('f', 32, long) #define IOC_REQUEST_CREATE _IOWR('f', 33, long) #define IOC_REQUEST_OPEN _IOWR('f', 34, long) #define IOC_REQUEST_CLOSE _IOWR('f', 35, long) #define IOC_REQUEST_MAX_NR 35 #endif