1/*
2 * Copyright (c) 2008 Voltaire Inc.  All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses.  You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 *     Redistribution and use in source and binary forms, with or
11 *     without modification, are permitted provided that the following
12 *     conditions are met:
13 *
14 *      - Redistributions of source code must retain the above
15 *        copyright notice, this list of conditions and the following
16 *        disclaimer.
17 *
18 *      - Redistributions in binary form must reproduce the above
19 *        copyright notice, this list of conditions and the following
20 *        disclaimer in the documentation and/or other materials
21 *        provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 *
32 */
33#ifndef _UMAD_SYSFS_H
34#define _UMAD_SYSFS_H
35
36#include <stdint.h>
37#include <string.h>
38#include <stdlib.h>
39#include <infiniband/types.h>
40#include <infiniband/umad.h>
41
42struct dirent;
43
44extern int sys_read_string(const char *dir_name, const char *file_name, char *str, int len);
45extern int sys_read_guid(const char *dir_name, const char *file_name, __be64 * net_guid);
46extern int sys_read_gid(const char *dir_name, const char *file_name,
47			union umad_gid *gid);
48extern int sys_read_uint64(const char *dir_name, const char *file_name, uint64_t * u);
49extern int sys_read_uint(const char *dir_name, const char *file_name, unsigned *u);
50extern int sys_scandir(const char *dirname, struct dirent ***namelist,
51    int (*select)(const struct dirent *),
52    int (*compar)(const struct dirent **, const struct dirent **));
53
54#ifdef __FreeBSD__
55static inline const char *
56path_to_sysctl(const char *path, int out_len, char *out)
57{
58	const char *retval = out;
59
60	/* Validate that out is at least as long as the original path */
61	if (out_len < (strlen(path) + 1))
62		return NULL;
63
64	while (*path == '/')
65		path++;
66
67	while (*path) {
68		if (*path == '/') {
69			if (*(path + 1) == '/')
70				*out = '.';
71			else
72				*out++ = '.';
73		} else
74			*out++ = *path;
75		path++;
76	}
77	*out = 0;
78	return (retval);
79}
80
81#define	PATH_TO_SYS(str) \
82	path_to_sysctl(str, strlen(str) + 1, alloca(strlen(str) + 1))
83#else
84#define	PATH_TO_SYS(str) str
85#endif
86
87#endif /* _UMAD_SYSFS_H */
88