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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.sun.com/software/products/lustre/docs/GPLv2.pdf
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
* GPL HEADER END
*/
/*
* Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
* Copyright (c) 2011, 2012, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Lustre is a trademark of Sun Microsystems, Inc.
*/
#ifndef __LIBCFS_LIBCFS_H__
#define __LIBCFS_LIBCFS_H__
#include "linux/libcfs.h"
#include <linux/gfp.h>
#include "curproc.h"
static inline int __is_po2(unsigned long long val)
{
return !(val & (val - 1));
}
#define IS_PO2(val) __is_po2((unsigned long long)(val))
#define LOWEST_BIT_SET(x) ((x) & ~((x) - 1))
/*
* Lustre Error Checksum: calculates checksum
* of Hex number by XORing each bit.
*/
#define LERRCHKSUM(hexnum) (((hexnum) & 0xf) ^ ((hexnum) >> 4 & 0xf) ^ \
((hexnum) >> 8 & 0xf))
#define LUSTRE_SRV_LNET_PID LUSTRE_LNET_PID
#include <linux/list.h>
int libcfs_arch_init(void);
void libcfs_arch_cleanup(void);
/* need both kernel and user-land acceptor */
#define LNET_ACCEPTOR_MIN_RESERVED_PORT 512
#define LNET_ACCEPTOR_MAX_RESERVED_PORT 1023
/*
* libcfs pseudo device operations
*
* It's just draft now.
*/
struct cfs_psdev_file {
unsigned long off;
void *private_data;
unsigned long reserved1;
unsigned long reserved2;
};
struct cfs_psdev_ops {
int (*p_open)(unsigned long, void *);
int (*p_close)(unsigned long, void *);
int (*p_read)(struct cfs_psdev_file *, char *, unsigned long);
int (*p_write)(struct cfs_psdev_file *, char *, unsigned long);
int (*p_ioctl)(struct cfs_psdev_file *, unsigned long, void *);
};
/*
* Drop into debugger, if possible. Implementation is provided by platform.
*/
void cfs_enter_debugger(void);
/*
* Defined by platform
*/
int unshare_fs_struct(void);
sigset_t cfs_get_blocked_sigs(void);
sigset_t cfs_block_allsigs(void);
sigset_t cfs_block_sigs(unsigned long sigs);
sigset_t cfs_block_sigsinv(unsigned long sigs);
void cfs_restore_sigs(sigset_t);
int cfs_signal_pending(void);
void cfs_clear_sigpending(void);
/*
* Random number handling
*/
/* returns a random 32-bit integer */
unsigned int cfs_rand(void);
/* seed the generator */
void cfs_srand(unsigned int, unsigned int);
void cfs_get_random_bytes(void *buf, int size);
#include "libcfs_debug.h"
#include "libcfs_cpu.h"
#include "libcfs_private.h"
#include "libcfs_ioctl.h"
#include "libcfs_prim.h"
#include "libcfs_time.h"
#include "libcfs_string.h"
#include "libcfs_kernelcomm.h"
#include "libcfs_workitem.h"
#include "libcfs_hash.h"
#include "libcfs_fail.h"
#include "libcfs_crypto.h"
/* container_of depends on "likely" which is defined in libcfs_private.h */
static inline void *__container_of(void *ptr, unsigned long shift)
{
if (unlikely(IS_ERR(ptr) || ptr == NULL))
return ptr;
return (char *)ptr - shift;
}
#define container_of0(ptr, type, member) \
((type *)__container_of((void *)(ptr), offsetof(type, member)))
#define _LIBCFS_H
void *libcfs_kvzalloc(size_t size, gfp_t flags);
void *libcfs_kvzalloc_cpt(struct cfs_cpt_table *cptab, int cpt, size_t size,
gfp_t flags);
#endif /* _LIBCFS_H */
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