Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 | // SPDX-License-Identifier: GPL-2.0
/*
* 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) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
* Copyright (c) 2011, 2015, 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/gfp.h>
#include <linux/list.h>
#include <uapi/linux/lnet/libcfs_ioctl.h>
#include <linux/libcfs/linux/libcfs.h>
#include <linux/libcfs/libcfs_debug.h>
#include <linux/libcfs/libcfs_private.h>
#include <linux/libcfs/libcfs_cpu.h>
#include <linux/libcfs/libcfs_prim.h>
#include <linux/libcfs/libcfs_time.h>
#include <linux/libcfs/libcfs_string.h>
#include <linux/libcfs/libcfs_hash.h>
#include <linux/libcfs/libcfs_fail.h>
#include <linux/libcfs/curproc.h>
#define LIBCFS_VERSION "0.7.0"
#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))
/* need both kernel and user-land acceptor */
#define LNET_ACCEPTOR_MIN_RESERVED_PORT 512
#define LNET_ACCEPTOR_MAX_RESERVED_PORT 1023
/* Block all signals except for the @sigs */
static inline void cfs_block_sigsinv(unsigned long sigs, sigset_t *old)
{
sigset_t new;
siginitsetinv(&new, sigs);
sigorsets(&new, ¤t->blocked, &new);
sigprocmask(SIG_BLOCK, &new, old);
}
static inline void
cfs_restore_sigs(sigset_t *old)
{
sigprocmask(SIG_SETMASK, old, NULL);
}
struct libcfs_ioctl_handler {
struct list_head item;
int (*handle_ioctl)(unsigned int cmd, struct libcfs_ioctl_hdr *hdr);
};
#define DECLARE_IOCTL_HANDLER(ident, func) \
struct libcfs_ioctl_handler ident = { \
.item = LIST_HEAD_INIT(ident.item), \
.handle_ioctl = func \
}
int libcfs_register_ioctl(struct libcfs_ioctl_handler *hand);
int libcfs_deregister_ioctl(struct libcfs_ioctl_handler *hand);
int libcfs_ioctl_getdata(struct libcfs_ioctl_hdr **hdr_pp,
const struct libcfs_ioctl_hdr __user *uparam);
int libcfs_ioctl_data_adjust(struct libcfs_ioctl_data *data);
int libcfs_ioctl(unsigned long cmd, void __user *arg);
/* container_of depends on "likely" which is defined in libcfs_private.h */
static inline void *__container_of(void *ptr, unsigned long shift)
{
if (IS_ERR_OR_NULL(ptr))
return ptr;
return (char *)ptr - shift;
}
#define container_of0(ptr, type, member) \
((type *)__container_of((void *)(ptr), offsetof(type, member)))
#define _LIBCFS_H
extern struct miscdevice libcfs_dev;
/**
* The path of debug log dump upcall script.
*/
extern char lnet_debug_log_upcall[1024];
extern struct workqueue_struct *cfs_rehash_wq;
struct lnet_debugfs_symlink_def {
char *name;
char *target;
};
void lustre_insert_debugfs(struct ctl_table *table,
const struct lnet_debugfs_symlink_def *symlinks);
int lprocfs_call_handler(void *data, int write, loff_t *ppos,
void __user *buffer, size_t *lenp,
int (*handler)(void *data, int write, loff_t pos,
void __user *buffer, int len));
#endif /* _LIBCFS_H */
|