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/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 only,
* as published by the Free Software Foundation.
*
* This program 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 version 2 for more details (a copy is included
* in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
* http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
/*
* Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
* Copyright (c) 2012, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Lustre is a trademark of Sun Microsystems, Inc.
*/
#ifndef _UAPI_LUSTRE_CFG_H_
#define _UAPI_LUSTRE_CFG_H_
#include <linux/errno.h>
#include <linux/kernel.h>
#include <uapi/linux/lustre/lustre_user.h>
/** \defgroup cfg cfg
*
* @{
*/
/*
* 1cf6
* lcfG
*/
#define LUSTRE_CFG_VERSION 0x1cf60001
#define LUSTRE_CFG_MAX_BUFCOUNT 8
#define LCFG_HDR_SIZE(count) \
__ALIGN_KERNEL(offsetof(struct lustre_cfg, lcfg_buflens[(count)]), 8)
/** If the LCFG_REQUIRED bit is set in a configuration command,
* then the client is required to understand this parameter
* in order to mount the filesystem. If it does not understand
* a REQUIRED command the client mount will fail.
*/
#define LCFG_REQUIRED 0x0001000
enum lcfg_command_type {
LCFG_ATTACH = 0x00cf001, /**< create a new obd instance */
LCFG_DETACH = 0x00cf002, /**< destroy obd instance */
LCFG_SETUP = 0x00cf003, /**< call type-specific setup */
LCFG_CLEANUP = 0x00cf004, /**< call type-specific cleanup
*/
LCFG_ADD_UUID = 0x00cf005, /**< add a nid to a niduuid */
LCFG_DEL_UUID = 0x00cf006, /**< remove a nid from
* a niduuid
*/
LCFG_MOUNTOPT = 0x00cf007, /**< create a profile
* (mdc, osc)
*/
LCFG_DEL_MOUNTOPT = 0x00cf008, /**< destroy a profile */
LCFG_SET_TIMEOUT = 0x00cf009, /**< set obd_timeout */
LCFG_SET_UPCALL = 0x00cf00a, /**< deprecated */
LCFG_ADD_CONN = 0x00cf00b, /**< add a failover niduuid to
* an obd
*/
LCFG_DEL_CONN = 0x00cf00c, /**< remove a failover niduuid */
LCFG_LOV_ADD_OBD = 0x00cf00d, /**< add an osc to a lov */
LCFG_LOV_DEL_OBD = 0x00cf00e, /**< remove an osc from a lov */
LCFG_PARAM = 0x00cf00f, /**< set a proc parameter */
LCFG_MARKER = 0x00cf010, /**< metadata about next
* cfg rec
*/
LCFG_LOG_START = 0x00ce011, /**< mgc only, process a
* cfg log
*/
LCFG_LOG_END = 0x00ce012, /**< stop processing updates */
LCFG_LOV_ADD_INA = 0x00ce013, /**< like LOV_ADD_OBD,
* inactive
*/
LCFG_ADD_MDC = 0x00cf014, /**< add an mdc to a lmv */
LCFG_DEL_MDC = 0x00cf015, /**< remove an mdc from a lmv */
LCFG_SPTLRPC_CONF = 0x00ce016, /**< security */
LCFG_POOL_NEW = 0x00ce020, /**< create an ost pool name */
LCFG_POOL_ADD = 0x00ce021, /**< add an ost to a pool */
LCFG_POOL_REM = 0x00ce022, /**< remove an ost from a pool */
LCFG_POOL_DEL = 0x00ce023, /**< destroy an ost pool name */
LCFG_SET_LDLM_TIMEOUT = 0x00ce030, /**< set ldlm_timeout */
LCFG_PRE_CLEANUP = 0x00cf031, /**< call type-specific pre
* cleanup cleanup
*/
LCFG_SET_PARAM = 0x00ce032, /**< use set_param syntax to set
* a proc parameters
*/
};
struct lustre_cfg_bufs {
void *lcfg_buf[LUSTRE_CFG_MAX_BUFCOUNT];
__u32 lcfg_buflen[LUSTRE_CFG_MAX_BUFCOUNT];
__u32 lcfg_bufcount;
};
struct lustre_cfg {
__u32 lcfg_version;
__u32 lcfg_command;
__u32 lcfg_num;
__u32 lcfg_flags;
__u64 lcfg_nid;
__u32 lcfg_nal; /* not used any more */
__u32 lcfg_bufcount;
__u32 lcfg_buflens[0];
};
enum cfg_record_type {
PORTALS_CFG_TYPE = 1,
LUSTRE_CFG_TYPE = 123,
};
#define LUSTRE_CFG_BUFLEN(lcfg, idx) \
((lcfg)->lcfg_bufcount <= (idx) ? 0 : (lcfg)->lcfg_buflens[(idx)])
static inline void lustre_cfg_bufs_set(struct lustre_cfg_bufs *bufs,
__u32 index, void *buf, __u32 buflen)
{
if (index >= LUSTRE_CFG_MAX_BUFCOUNT)
return;
if (!bufs)
return;
if (bufs->lcfg_bufcount <= index)
bufs->lcfg_bufcount = index + 1;
bufs->lcfg_buf[index] = buf;
bufs->lcfg_buflen[index] = buflen;
}
static inline void lustre_cfg_bufs_set_string(struct lustre_cfg_bufs *bufs,
__u32 index, char *str)
{
lustre_cfg_bufs_set(bufs, index, str, str ? strlen(str) + 1 : 0);
}
static inline void lustre_cfg_bufs_reset(struct lustre_cfg_bufs *bufs,
char *name)
{
memset((bufs), 0, sizeof(*bufs));
if (name)
lustre_cfg_bufs_set_string(bufs, 0, name);
}
static inline void *lustre_cfg_buf(struct lustre_cfg *lcfg, __u32 index)
{
__u32 i;
size_t offset;
__u32 bufcount;
if (!lcfg)
return NULL;
bufcount = lcfg->lcfg_bufcount;
if (index >= bufcount)
return NULL;
offset = LCFG_HDR_SIZE(lcfg->lcfg_bufcount);
for (i = 0; i < index; i++)
offset += __ALIGN_KERNEL(lcfg->lcfg_buflens[i], 8);
return (char *)lcfg + offset;
}
static inline void lustre_cfg_bufs_init(struct lustre_cfg_bufs *bufs,
struct lustre_cfg *lcfg)
{
__u32 i;
bufs->lcfg_bufcount = lcfg->lcfg_bufcount;
for (i = 0; i < bufs->lcfg_bufcount; i++) {
bufs->lcfg_buflen[i] = lcfg->lcfg_buflens[i];
bufs->lcfg_buf[i] = lustre_cfg_buf(lcfg, i);
}
}
static inline __u32 lustre_cfg_len(__u32 bufcount, __u32 *buflens)
{
__u32 i;
__u32 len;
len = LCFG_HDR_SIZE(bufcount);
for (i = 0; i < bufcount; i++)
len += __ALIGN_KERNEL(buflens[i], 8);
return __ALIGN_KERNEL(len, 8);
}
static inline void lustre_cfg_init(struct lustre_cfg *lcfg, int cmd,
struct lustre_cfg_bufs *bufs)
{
char *ptr;
__u32 i;
lcfg->lcfg_version = LUSTRE_CFG_VERSION;
lcfg->lcfg_command = cmd;
lcfg->lcfg_bufcount = bufs->lcfg_bufcount;
ptr = (char *)lcfg + LCFG_HDR_SIZE(lcfg->lcfg_bufcount);
for (i = 0; i < lcfg->lcfg_bufcount; i++) {
lcfg->lcfg_buflens[i] = bufs->lcfg_buflen[i];
if (bufs->lcfg_buf[i]) {
memcpy(ptr, bufs->lcfg_buf[i], bufs->lcfg_buflen[i]);
ptr += __ALIGN_KERNEL(bufs->lcfg_buflen[i], 8);
}
}
}
static inline int lustre_cfg_sanity_check(void *buf, size_t len)
{
struct lustre_cfg *lcfg = (struct lustre_cfg *)buf;
if (!lcfg)
return -EINVAL;
/* check that the first bits of the struct are valid */
if (len < LCFG_HDR_SIZE(0))
return -EINVAL;
if (lcfg->lcfg_version != LUSTRE_CFG_VERSION)
return -EINVAL;
if (lcfg->lcfg_bufcount >= LUSTRE_CFG_MAX_BUFCOUNT)
return -EINVAL;
/* check that the buflens are valid */
if (len < LCFG_HDR_SIZE(lcfg->lcfg_bufcount))
return -EINVAL;
/* make sure all the pointers point inside the data */
if (len < lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens))
return -EINVAL;
return 0;
}
/** @} cfg */
#endif /* _UAPI_LUSTRE_CFG_H_ */
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