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
|
/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2018 Intel Corporation
*/
/**
* @file
* Stores functions and path defines for files and directories
* on the filesystem for Linux, that are used by the Linux EAL.
*/
#ifndef EAL_FILESYSTEM_H
#define EAL_FILESYSTEM_H
/** Path of rte config file. */
#define RUNTIME_CONFIG_FMT "%s/.%s_config"
#include <stdint.h>
#include <limits.h>
#include <unistd.h>
#include <stdlib.h>
#include <rte_string_fns.h>
#include "eal_internal_cfg.h"
static const char *default_config_dir = "/var/run";
static inline const char *
eal_runtime_config_path(void)
{
static char buffer[PATH_MAX]; /* static so auto-zeroed */
const char *directory = default_config_dir;
const char *home_dir = getenv("HOME");
if (getuid() != 0 && home_dir != NULL)
directory = home_dir;
snprintf(buffer, sizeof(buffer) - 1, RUNTIME_CONFIG_FMT, directory,
internal_config.hugefile_prefix);
return buffer;
}
/** Path of primary/secondary communication unix socket file. */
#define MP_SOCKET_PATH_FMT "%s/.%s_unix"
static inline const char *
eal_mp_socket_path(void)
{
static char buffer[PATH_MAX]; /* static so auto-zeroed */
const char *directory = default_config_dir;
const char *home_dir = getenv("HOME");
if (getuid() != 0 && home_dir != NULL)
directory = home_dir;
snprintf(buffer, sizeof(buffer) - 1, MP_SOCKET_PATH_FMT,
directory, internal_config.hugefile_prefix);
return buffer;
}
/** Path of hugepage info file. */
#define HUGEPAGE_INFO_FMT "%s/.%s_hugepage_info"
static inline const char *
eal_hugepage_info_path(void)
{
static char buffer[PATH_MAX]; /* static so auto-zeroed */
const char *directory = default_config_dir;
const char *home_dir = getenv("HOME");
if (getuid() != 0 && home_dir != NULL)
directory = home_dir;
snprintf(buffer, sizeof(buffer) - 1, HUGEPAGE_INFO_FMT, directory,
internal_config.hugefile_prefix);
return buffer;
}
/** String format for hugepage map files. */
#define HUGEFILE_FMT "%s/%smap_%d"
#define TEMP_HUGEFILE_FMT "%s/%smap_temp_%d"
static inline const char *
eal_get_hugefile_path(char *buffer, size_t buflen, const char *hugedir, int f_id)
{
snprintf(buffer, buflen, HUGEFILE_FMT, hugedir,
internal_config.hugefile_prefix, f_id);
buffer[buflen - 1] = '\0';
return buffer;
}
/** define the default filename prefix for the %s values above */
#define HUGEFILE_PREFIX_DEFAULT "rte"
/** Function to read a single numeric value from a file on the filesystem.
* Used to read information from files on /sys */
int eal_parse_sysfs_value(const char *filename, unsigned long *val);
#endif /* EAL_FILESYSTEM_H */
|
