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Vitaly Fertman authoredland Early Lock Cancel code
Vitaly Fertman authoredland Early Lock Cancel code
lustre_mds.h 8.01 KiB
/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=8:tabstop=8:
*
* This file is part of Lustre, http://www.lustre.org
*
* MDS data structures.
* See also lustre_idl.h for wire formats of requests.
*/
#ifndef _LUSTRE_MDS_H
#define _LUSTRE_MDS_H
#include <lustre_handles.h>
#include <libcfs/kp30.h>
#include <lustre/lustre_idl.h>
#include <lustre_lib.h>
#include <lustre_dlm.h>
#include <lustre_log.h>
#include <lustre_export.h>
#if defined(__linux__)
#include <linux/lustre_mds.h>
#elif defined(__APPLE__)
#include <darwin/lustre_mds.h>
#elif defined(__WINNT__)
#include <winnt/lustre_mds.h>
#else
#error Unsupported operating system.
#endif
struct ldlm_lock_desc;
struct mds_obd;
struct ptlrpc_connection;
struct ptlrpc_client;
struct obd_export;
struct ptlrpc_request;
struct obd_device;
struct ll_file_data;
struct lustre_md {
struct mds_body *body;
struct lov_stripe_md *lsm;
#ifdef CONFIG_FS_POSIX_ACL
struct posix_acl *posix_acl;
#endif
};
struct mdc_op_data {
struct ll_fid fid1;
struct ll_fid fid2;
struct ll_fid fid3;
struct ll_fid fid4;
__u64 mod_time;
const char *name;
int namelen;
__u32 create_mode;
__u32 suppgids[2];
void *data;
};
struct mds_update_record {
__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;
int ur_eadatalen;
void *ur_eadata; int ur_cookielen;
struct llog_cookie *ur_logcookies;
struct iattr ur_iattr;
struct lvfs_ucred ur_uc;
__u64 ur_rdev;
__u64 ur_time;
__u32 ur_mode;
__u32 ur_flags;
struct lvfs_grp_hash_entry *ur_grp_entry;
struct ldlm_request *ur_dlm;
};
/* file data for open files on MDS */
struct mds_file_data {
struct portals_handle mfd_handle; /* must be first */
atomic_t mfd_refcount;
struct list_head mfd_list; /* protected by med_open_lock */
__u64 mfd_xid;
int mfd_mode;
struct dentry *mfd_dentry;
};
/* ACL */
#ifdef CONFIG_FS_POSIX_ACL
#ifdef HAVE_XATTR_ACL
# define MDS_XATTR_NAME_ACL_ACCESS XATTR_NAME_ACL_ACCESS
# define mds_xattr_acl_size(entry) xattr_acl_size(entry)
# else
# define MDS_XATTR_NAME_ACL_ACCESS POSIX_ACL_XATTR_ACCESS
# define mds_xattr_acl_size(entry) posix_acl_xattr_size(entry)
# endif
# define LUSTRE_POSIX_ACL_MAX_ENTRIES (32)
# define LUSTRE_POSIX_ACL_MAX_SIZE \
(mds_xattr_acl_size(LUSTRE_POSIX_ACL_MAX_ENTRIES))
#else
# define LUSTRE_POSIX_ACL_MAX_SIZE 0
#endif
/* mds/mds_reint.c */
int mds_reint_rec(struct mds_update_record *r, int offset,
struct ptlrpc_request *req, struct lustre_handle *);
/* mds/mds_lov.c */
/* mdc/mdc_locks.c */
int it_disposition(struct lookup_intent *it, int flag);
void it_set_disposition(struct lookup_intent *it, int flag);
void it_clear_disposition(struct lookup_intent *it, int flag);
int it_open_error(int phase, struct lookup_intent *it);
void mdc_set_lock_data(__u64 *lockh, void *data);
int mdc_change_cbdata(struct obd_export *exp, struct ll_fid *fid,
ldlm_iterator_t it, void *data);
int mdc_intent_lock(struct obd_export *exp,
struct mdc_op_data *,
void *lmm, int lmmsize,
struct lookup_intent *, int,
struct ptlrpc_request **reqp,
ldlm_blocking_callback cb_blocking, int extra_lock_flags);
int mdc_enqueue(struct obd_export *exp, struct ldlm_enqueue_info *einfo,
struct lookup_intent *it, struct mdc_op_data *data,
struct lustre_handle *lockh, void *lmm, int lmmlen,
int extra_lock_flags);
/* mdc/mdc_request.c */
int mdc_init_ea_size(struct obd_export *mdc_exp, struct obd_export *lov_exp);
int mdc_req2lustre_md(struct ptlrpc_request *req, int offset,
struct obd_export *exp, struct lustre_md *md);
void mdc_free_lustre_md(struct obd_export *exp, struct lustre_md *md);
int mdc_getstatus(struct obd_export *exp, struct ll_fid *rootfid);
int mdc_getattr(struct obd_export *exp, struct ll_fid *fid, obd_valid valid, unsigned int ea_size,
struct ptlrpc_request **request);
int mdc_getattr_name(struct obd_export *exp, struct ll_fid *fid,
const char *filename, int namelen, unsigned long valid,
unsigned int ea_size, struct ptlrpc_request **request);
int mdc_setattr(struct obd_export *exp, struct mdc_op_data *data,
struct iattr *iattr, void *ea, int ealen, void *ea2, int ea2len,
struct ptlrpc_request **request);
int mdc_setxattr(struct obd_export *exp, struct ll_fid *fid,
obd_valid valid, const char *xattr_name,
const char *input, int input_size,
int output_size, int flags,
struct ptlrpc_request **request);
int mdc_getxattr(struct obd_export *exp, struct ll_fid *fid,
obd_valid valid, const char *xattr_name,
const char *input, int input_size,
int output_size, struct ptlrpc_request **request);
int mdc_open(struct obd_export *exp, obd_id ino, int type, int flags,
struct lov_mds_md *lmm, int lmm_size, struct lustre_handle *fh,
struct ptlrpc_request **);
struct obd_client_handle;
void mdc_set_open_replay_data(struct obd_client_handle *och,
struct ptlrpc_request *open_req);
void mdc_clear_open_replay_data(struct obd_client_handle *och);
int mdc_close(struct obd_export *, struct obdo *, struct obd_client_handle *,
struct ptlrpc_request **);
int mdc_readpage(struct obd_export *exp, struct ll_fid *mdc_fid, __u64 offset,
struct page *, struct ptlrpc_request **);
int mdc_create(struct obd_export *exp, struct mdc_op_data *op_data,
const void *data, int datalen, int mode, __u32 uid, __u32 gid,
__u32 cap_effective, __u64 rdev,struct ptlrpc_request **request);
int mdc_unlink(struct obd_export *exp, struct mdc_op_data *data,
struct ptlrpc_request **request);
int mdc_link(struct obd_export *exp, struct mdc_op_data *data,
struct ptlrpc_request **);
int mdc_rename(struct obd_export *exp, struct mdc_op_data *data,
const char *old, int oldlen, const char *new, int newlen,
struct ptlrpc_request **request);
int mdc_sync(struct obd_export *exp, struct ll_fid *fid,
struct ptlrpc_request **);
int mdc_create_client(struct obd_uuid uuid, struct ptlrpc_client *cl);
int mdc_resource_get_unused(struct obd_export *exp, struct ll_fid *fid,
struct list_head *cancels, ldlm_mode_t mode,
__u64 bits);
/* Store the generation of a newly-created inode in |req| for replay. */
void mdc_store_inode_generation(struct ptlrpc_request *req, int reqoff,
int repoff);
int mdc_llog_process(struct obd_export *, char *logname, llog_cb_t, void *data);
int mdc_done_writing(struct obd_export *exp, struct obdo *);
static inline void mdc_pack_fid(struct ll_fid *fid, obd_id ino, __u32 gen,
int type)
{
fid->id = ino;
fid->generation = gen;
fid->f_type = type;
}
/* 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