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.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2015, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
33 #ifndef __LIBCFS_LIBCFS_H__
34 #define __LIBCFS_LIBCFS_H__
36 #include <linux/gfp.h>
37 #include <linux/list.h>
39 #include <uapi/linux/lnet/libcfs_ioctl.h>
40 #include <linux/libcfs/linux/libcfs.h>
41 #include <linux/libcfs/libcfs_debug.h>
42 #include <linux/libcfs/libcfs_private.h>
43 #include <linux/libcfs/libcfs_cpu.h>
44 #include <linux/libcfs/libcfs_prim.h>
45 #include <linux/libcfs/libcfs_time.h>
46 #include <linux/libcfs/libcfs_string.h>
47 #include <linux/libcfs/libcfs_workitem.h>
48 #include <linux/libcfs/libcfs_hash.h>
49 #include <linux/libcfs/libcfs_fail.h>
50 #include <linux/libcfs/curproc.h>
52 #define LIBCFS_VERSION "0.7.0"
54 #define LOWEST_BIT_SET(x) ((x) & ~((x) - 1))
57 * Lustre Error Checksum: calculates checksum
58 * of Hex number by XORing each bit.
60 #define LERRCHKSUM(hexnum) (((hexnum) & 0xf) ^ ((hexnum) >> 4 & 0xf) ^ \
61 ((hexnum) >> 8 & 0xf))
63 /* need both kernel and user-land acceptor */
64 #define LNET_ACCEPTOR_MIN_RESERVED_PORT 512
65 #define LNET_ACCEPTOR_MAX_RESERVED_PORT 1023
70 sigset_t cfs_block_allsigs(void);
71 sigset_t cfs_block_sigs(unsigned long sigs);
72 sigset_t cfs_block_sigsinv(unsigned long sigs);
73 void cfs_restore_sigs(sigset_t sigset);
74 void cfs_clear_sigpending(void);
77 * Random number handling
80 /* returns a random 32-bit integer */
81 unsigned int cfs_rand(void);
82 /* seed the generator */
83 void cfs_srand(unsigned int seed1, unsigned int seed2);
84 void cfs_get_random_bytes(void *buf, int size);
86 struct libcfs_ioctl_handler {
87 struct list_head item;
88 int (*handle_ioctl)(unsigned int cmd, struct libcfs_ioctl_hdr *hdr);
91 #define DECLARE_IOCTL_HANDLER(ident, func) \
92 struct libcfs_ioctl_handler ident = { \
93 .item = LIST_HEAD_INIT(ident.item), \
94 .handle_ioctl = func \
97 int libcfs_register_ioctl(struct libcfs_ioctl_handler *hand);
98 int libcfs_deregister_ioctl(struct libcfs_ioctl_handler *hand);
100 int libcfs_ioctl_getdata(struct libcfs_ioctl_hdr **hdr_pp,
101 const struct libcfs_ioctl_hdr __user *uparam);
102 int libcfs_ioctl_data_adjust(struct libcfs_ioctl_data *data);
103 int libcfs_ioctl(unsigned long cmd, void __user *arg);
105 /* container_of depends on "likely" which is defined in libcfs_private.h */
106 static inline void *__container_of(void *ptr, unsigned long shift)
108 if (IS_ERR_OR_NULL(ptr))
110 return (char *)ptr - shift;
113 #define container_of0(ptr, type, member) \
114 ((type *)__container_of((void *)(ptr), offsetof(type, member)))
118 void *libcfs_kvzalloc(size_t size, gfp_t flags);
119 void *libcfs_kvzalloc_cpt(struct cfs_cpt_table *cptab, int cpt, size_t size,
122 extern struct miscdevice libcfs_dev;
124 * The path of debug log dump upcall script.
126 extern char lnet_debug_log_upcall[1024];
128 extern struct cfs_wi_sched *cfs_sched_rehash;
130 struct lnet_debugfs_symlink_def {
135 void lustre_insert_debugfs(struct ctl_table *table,
136 const struct lnet_debugfs_symlink_def *symlinks);
137 int lprocfs_call_handler(void *data, int write, loff_t *ppos,
138 void __user *buffer, size_t *lenp,
139 int (*handler)(void *data, int write, loff_t pos,
140 void __user *buffer, int len));
142 #endif /* _LIBCFS_H */