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
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
// +build linux
package createconfig
import (
"io/ioutil"
"github.com/docker/docker/profiles/seccomp"
"github.com/opencontainers/runc/libcontainer/configs"
"github.com/opencontainers/runc/libcontainer/devices"
spec "github.com/opencontainers/runtime-spec/specs-go"
"github.com/opencontainers/runtime-tools/generate"
"github.com/pkg/errors"
"golang.org/x/sys/unix"
)
// Device transforms a libcontainer configs.Device to a specs.LinuxDevice object.
func Device(d *configs.Device) spec.LinuxDevice {
return spec.LinuxDevice{
Type: string(d.Type),
Path: d.Path,
Major: d.Major,
Minor: d.Minor,
FileMode: fmPtr(int64(d.FileMode)),
UID: u32Ptr(int64(d.Uid)),
GID: u32Ptr(int64(d.Gid)),
}
}
func addDevice(g *generate.Generator, device string) error {
dev, err := devices.DeviceFromPath(device, "rwm")
if err != nil {
return errors.Wrapf(err, "%s is not a valid device", device)
}
linuxdev := spec.LinuxDevice{
Path: dev.Path,
Type: string(dev.Type),
Major: dev.Major,
Minor: dev.Minor,
FileMode: &dev.FileMode,
UID: &dev.Uid,
GID: &dev.Gid,
}
g.AddDevice(linuxdev)
g.AddLinuxResourcesDevice(true, string(dev.Type), &dev.Major, &dev.Minor, dev.Permissions)
return nil
}
func (c *CreateConfig) addPrivilegedDevices(g *generate.Generator) error {
hostDevices, err := devices.HostDevices()
if err != nil {
return err
}
g.ClearLinuxDevices()
for _, d := range hostDevices {
g.AddDevice(Device(d))
}
g.AddLinuxResourcesDevice(true, "", nil, nil, "rwm")
return nil
}
func getSeccompConfig(config *CreateConfig, configSpec *spec.Spec) (*spec.LinuxSeccomp, error) {
var seccompConfig *spec.LinuxSeccomp
var err error
if config.SeccompProfilePath != "" {
seccompProfile, err := ioutil.ReadFile(config.SeccompProfilePath)
if err != nil {
return nil, errors.Wrapf(err, "opening seccomp profile (%s) failed", config.SeccompProfilePath)
}
seccompConfig, err = seccomp.LoadProfile(string(seccompProfile), configSpec)
if err != nil {
return nil, errors.Wrapf(err, "loading seccomp profile (%s) failed", config.SeccompProfilePath)
}
} else {
seccompConfig, err = seccomp.GetDefaultProfile(configSpec)
if err != nil {
return nil, errors.Wrapf(err, "loading seccomp profile (%s) failed", config.SeccompProfilePath)
}
}
return seccompConfig, nil
}
func (c *CreateConfig) createBlockIO() (*spec.LinuxBlockIO, error) {
bio := &spec.LinuxBlockIO{}
bio.Weight = &c.Resources.BlkioWeight
if len(c.Resources.BlkioWeightDevice) > 0 {
var lwds []spec.LinuxWeightDevice
for _, i := range c.Resources.BlkioWeightDevice {
wd, err := validateweightDevice(i)
if err != nil {
return bio, errors.Wrapf(err, "invalid values for blkio-weight-device")
}
wdStat, err := getStatFromPath(wd.path)
if err != nil {
return bio, errors.Wrapf(err, "error getting stat from path %q", wd.path)
}
lwd := spec.LinuxWeightDevice{
Weight: &wd.weight,
}
lwd.Major = int64(unix.Major(wdStat.Rdev))
lwd.Minor = int64(unix.Minor(wdStat.Rdev))
lwds = append(lwds, lwd)
}
bio.WeightDevice = lwds
}
if len(c.Resources.DeviceReadBps) > 0 {
readBps, err := makeThrottleArray(c.Resources.DeviceReadBps, bps)
if err != nil {
return bio, err
}
bio.ThrottleReadBpsDevice = readBps
}
if len(c.Resources.DeviceWriteBps) > 0 {
writeBpds, err := makeThrottleArray(c.Resources.DeviceWriteBps, bps)
if err != nil {
return bio, err
}
bio.ThrottleWriteBpsDevice = writeBpds
}
if len(c.Resources.DeviceReadIOps) > 0 {
readIOps, err := makeThrottleArray(c.Resources.DeviceReadIOps, iops)
if err != nil {
return bio, err
}
bio.ThrottleReadIOPSDevice = readIOps
}
if len(c.Resources.DeviceWriteIOps) > 0 {
writeIOps, err := makeThrottleArray(c.Resources.DeviceWriteIOps, iops)
if err != nil {
return bio, err
}
bio.ThrottleWriteIOPSDevice = writeIOps
}
return bio, nil
}
func makeThrottleArray(throttleInput []string, rateType int) ([]spec.LinuxThrottleDevice, error) {
var (
ltds []spec.LinuxThrottleDevice
t *throttleDevice
err error
)
for _, i := range throttleInput {
if rateType == bps {
t, err = validateBpsDevice(i)
} else {
t, err = validateIOpsDevice(i)
}
if err != nil {
return []spec.LinuxThrottleDevice{}, err
}
ltdStat, err := getStatFromPath(t.path)
if err != nil {
return ltds, errors.Wrapf(err, "error getting stat from path %q", t.path)
}
ltd := spec.LinuxThrottleDevice{
Rate: t.rate,
}
ltd.Major = int64(unix.Major(ltdStat.Rdev))
ltd.Minor = int64(unix.Minor(ltdStat.Rdev))
ltds = append(ltds, ltd)
}
return ltds, nil
}
|
