-
Notifications
You must be signed in to change notification settings - Fork 562
/
infoutil_unix.go
110 lines (96 loc) · 2.17 KB
/
infoutil_unix.go
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
//go:build freebsd || linux
// +build freebsd linux
/*
Copyright The containerd Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package infoutil
import (
"bufio"
"io"
"os"
"regexp"
"strings"
"golang.org/x/sys/unix"
)
// UnameR returns `uname -r`
func UnameR() string {
var utsname unix.Utsname
if err := unix.Uname(&utsname); err != nil {
// error is unlikely to happen
return ""
}
var s string
for _, f := range utsname.Release {
if f == 0 {
break
}
s += string(f)
}
return s
}
// UnameM returns `uname -m`
func UnameM() string {
var utsname unix.Utsname
if err := unix.Uname(&utsname); err != nil {
// error is unlikely to happen
return ""
}
var s string
for _, f := range utsname.Machine {
if f == 0 {
break
}
s += string(f)
}
return s
}
func DistroName() string {
f, err := os.Open("/etc/os-release")
if err != nil {
return UnameO
}
defer f.Close()
return distroName(f)
}
func distroName(r io.Reader) string {
scanner := bufio.NewScanner(r)
var name, version string
for scanner.Scan() {
line := scanner.Text()
k, v := getOSReleaseAttrib(line)
switch k {
case "PRETTY_NAME":
return v
case "NAME":
name = v
case "VERSION":
version = v
}
}
if name != "" {
if version != "" {
return name + " " + version
}
return name
}
return UnameO
}
var osReleaseAttribRegex = regexp.MustCompile(`([^\s=]+)\s*=\s*("{0,1})([^"]*)("{0,1})`)
func getOSReleaseAttrib(line string) (string, string) {
splitBySlash := strings.SplitN(line, "#", 2)
l := strings.TrimSpace(splitBySlash[0])
x := osReleaseAttribRegex.FindAllStringSubmatch(l, -1)
if len(x) >= 1 && len(x[0]) > 3 {
return x[0][1], x[0][3]
}
return "", ""
}