Viewing: lustre_access_log.h
/* SPDX-License-Identifier: LGPL-2.1+ WITH Linux-syscall-note */
/*
* This file is part of Lustre, http://www.lustre.org/
*/
#ifndef _LUSTRE_ACCESS_LOG_H
# define _LUSTRE_ACCESS_LOG_H
#include <linux/types.h>
#include <asm/ioctl.h>
/*
* This is due to us being out of kernel and the way the OpenSFS branch
* handles CFLAGS.
*/
#ifdef __KERNEL__
# include <uapi/linux/lustre/lustre_user.h>
#else
# include <linux/lustre/lustre_user.h>
#endif
enum ofd_access_flags {
OFD_ACCESS_READ = 0x1,
OFD_ACCESS_WRITE = 0x2,
};
struct ofd_access_entry_v1 {
struct lu_fid oae_parent_fid; /* 16 */
__u64 oae_begin; /* 24 */
__u64 oae_end; /* 32 */
__u64 oae_time; /* 40 */
__u32 oae_size; /* 44 */
__u32 oae_segment_count; /* 48 */
__u32 oae_flags; /* 52 enum ofd_access_flags */
__u32 oae_reserved1; /* 56 */
__u32 oae_reserved2; /* 60 */
__u32 oae_reserved3; /* 64 */
};
/* The name of the subdirectory of devtmpfs (/dev) containing the
* control and access log char devices.
*/
#define LUSTRE_ACCESS_LOG_DIR_NAME "lustre-access-log"
enum {
LUSTRE_ACCESS_LOG_VERSION_1 = 0x00010000,
LUSTRE_ACCESS_LOG_TYPE_OFD = 0x1,
LUSTRE_ACCESS_LOG_NAME_SIZE = 128,
};
struct lustre_access_log_info_v1 {
__u32 lali_version; /* LUSTRE_ACCESS_LOG_VERSION_1 */
__u32 lali_type; /* LUSTRE_ACCESS_LOG_TYPE_OFD */
char lali_name[LUSTRE_ACCESS_LOG_NAME_SIZE]; /* obd_name */
__u32 lali_log_size;
__u32 lali_entry_size;
/* underscore prefix members are for test and debug only */
__u32 _lali_head;
__u32 _lali_tail;
__u32 _lali_entry_space;
__u32 _lali_entry_count;
__u32 _lali_drop_count;
__u32 _lali_is_closed;
};
/* /dev/lustre-access-log/control ioctl: return lustre access log */
enum {
/* return lustre access log interface version. */
LUSTRE_ACCESS_LOG_IOCTL_VERSION = _IO('O', 0x81),
/* return device major used for access log devices.
* (Which is dynamically allocated during ofd module initialization.)
*/
LUSTRE_ACCESS_LOG_IOCTL_MAJOR = _IO('O', 0x82),
/* og/control ioctl: get global control event
* count and store it into file private_data.
*/
LUSTRE_ACCESS_LOG_IOCTL_PRESCAN = _IO('O', 0x83),
/* /dev/lustre-access-log/OBDNAME ioctl: populate struct
* lustre_access_log_info_v1 for the current device.
*/
LUSTRE_ACCESS_LOG_IOCTL_INFO = _IOR('O', 0x84,
struct lustre_access_log_info_v1),
/* /dev/lustre-access-log/OBDNAME ioctl: only entries whose
* PFID MDT index is equal to arg will be added to the log. A
* value of 0xfffffffff ((__u32)-1) will disable filtering
* which is the default. Added in V2.
*/
LUSTRE_ACCESS_LOG_IOCTL_FILTER = _IOW('O', 0x85, __u32),
};
#endif /* _LUSTRE_ACCESS_LOG_H */
