4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2015, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
37 #ifndef __LIBCFS_LIBCFS_H__
38 #define __LIBCFS_LIBCFS_H__
40 #include "linux/libcfs.h"
41 #include <linux/gfp.h>
45 #define LIBCFS_VERSION "0.7.0"
47 #define LOWEST_BIT_SET(x) ((x) & ~((x) - 1))
50 * Lustre Error Checksum: calculates checksum
51 * of Hex number by XORing each bit.
53 #define LERRCHKSUM(hexnum) (((hexnum) & 0xf) ^ ((hexnum) >> 4 & 0xf) ^ \
54 ((hexnum) >> 8 & 0xf))
56 #include <linux/list.h>
58 /* need both kernel and user-land acceptor */
59 #define LNET_ACCEPTOR_MIN_RESERVED_PORT 512
60 #define LNET_ACCEPTOR_MAX_RESERVED_PORT 1023
65 sigset_t cfs_block_allsigs(void);
66 sigset_t cfs_block_sigs(unsigned long sigs);
67 sigset_t cfs_block_sigsinv(unsigned long sigs);
68 void cfs_restore_sigs(sigset_t);
69 void cfs_clear_sigpending(void);
72 * Random number handling
75 /* returns a random 32-bit integer */
76 unsigned int cfs_rand(void);
77 /* seed the generator */
78 void cfs_srand(unsigned int, unsigned int);
79 void cfs_get_random_bytes(void *buf, int size);
81 #include "libcfs_debug.h"
82 #include "libcfs_cpu.h"
83 #include "libcfs_private.h"
84 #include "libcfs_ioctl.h"
85 #include "libcfs_prim.h"
86 #include "libcfs_time.h"
87 #include "libcfs_string.h"
88 #include "libcfs_workitem.h"
89 #include "libcfs_hash.h"
90 #include "libcfs_fail.h"
92 struct libcfs_ioctl_handler {
93 struct list_head item;
94 int (*handle_ioctl)(unsigned int cmd, struct libcfs_ioctl_hdr *hdr);
97 #define DECLARE_IOCTL_HANDLER(ident, func) \
98 struct libcfs_ioctl_handler ident = { \
99 .item = LIST_HEAD_INIT(ident.item), \
100 .handle_ioctl = func \
103 int libcfs_register_ioctl(struct libcfs_ioctl_handler *hand);
104 int libcfs_deregister_ioctl(struct libcfs_ioctl_handler *hand);
106 int libcfs_ioctl_getdata(struct libcfs_ioctl_hdr **hdr_pp,
107 const struct libcfs_ioctl_hdr __user *uparam);
108 int libcfs_ioctl_data_adjust(struct libcfs_ioctl_data *data);
109 int libcfs_ioctl(unsigned long cmd, void __user *arg);
111 /* container_of depends on "likely" which is defined in libcfs_private.h */
112 static inline void *__container_of(void *ptr, unsigned long shift)
114 if (IS_ERR_OR_NULL(ptr))
116 return (char *)ptr - shift;
119 #define container_of0(ptr, type, member) \
120 ((type *)__container_of((void *)(ptr), offsetof(type, member)))
124 void *libcfs_kvzalloc(size_t size, gfp_t flags);
125 void *libcfs_kvzalloc_cpt(struct cfs_cpt_table *cptab, int cpt, size_t size,
128 extern struct miscdevice libcfs_dev;
130 * The path of debug log dump upcall script.
132 extern char lnet_upcall[1024];
133 extern char lnet_debug_log_upcall[1024];
135 extern struct cfs_wi_sched *cfs_sched_rehash;
137 struct lnet_debugfs_symlink_def {
142 void lustre_insert_debugfs(struct ctl_table *table,
143 const struct lnet_debugfs_symlink_def *symlinks);
144 int lprocfs_call_handler(void *data, int write, loff_t *ppos,
145 void __user *buffer, size_t *lenp,
146 int (*handler)(void *data, int write,
147 loff_t pos, void __user *buffer, int len));
149 #endif /* _LIBCFS_H */