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
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
|
package generate
import (
"context"
"github.com/containers/image/v5/manifest"
"github.com/containers/podman/v2/libpod"
"github.com/containers/podman/v2/libpod/image"
ann "github.com/containers/podman/v2/pkg/annotations"
envLib "github.com/containers/podman/v2/pkg/env"
"github.com/containers/podman/v2/pkg/signal"
"github.com/containers/podman/v2/pkg/specgen"
spec "github.com/opencontainers/runtime-spec/specs-go"
"github.com/pkg/errors"
"golang.org/x/sys/unix"
)
// Fill any missing parts of the spec generator (e.g. from the image).
// Returns a set of warnings or any fatal error that occurred.
func CompleteSpec(ctx context.Context, r *libpod.Runtime, s *specgen.SpecGenerator) ([]string, error) {
var (
newImage *image.Image
err error
)
// Only add image configuration if we have an image
if s.Image != "" {
newImage, err = r.ImageRuntime().NewFromLocal(s.Image)
if err != nil {
return nil, err
}
_, mediaType, err := newImage.Manifest(ctx)
if err != nil {
return nil, err
}
if s.HealthConfig == nil && mediaType == manifest.DockerV2Schema2MediaType {
s.HealthConfig, err = newImage.GetHealthCheck(ctx)
if err != nil {
return nil, err
}
}
// Image stop signal
if s.StopSignal == nil {
stopSignal, err := newImage.StopSignal(ctx)
if err != nil {
return nil, err
}
if stopSignal != "" {
sig, err := signal.ParseSignalNameOrNumber(stopSignal)
if err != nil {
return nil, err
}
s.StopSignal = &sig
}
}
}
rtc, err := r.GetConfig()
if err != nil {
return nil, err
}
// Get Default Environment
defaultEnvs, err := envLib.ParseSlice(rtc.Containers.Env)
if err != nil {
return nil, errors.Wrap(err, "Env fields in containers.conf failed to parse")
}
var envs map[string]string
if newImage != nil {
// Image envs from the image if they don't exist
// already, overriding the default environments
imageEnvs, err := newImage.Env(ctx)
if err != nil {
return nil, err
}
envs, err = envLib.ParseSlice(imageEnvs)
if err != nil {
return nil, errors.Wrap(err, "Env fields from image failed to parse")
}
}
s.Env = envLib.Join(envLib.Join(defaultEnvs, envs), s.Env)
// Labels and Annotations
annotations := make(map[string]string)
if newImage != nil {
labels, err := newImage.Labels(ctx)
if err != nil {
return nil, err
}
// labels from the image that dont exist already
if len(labels) > 0 && s.Labels == nil {
s.Labels = make(map[string]string)
}
for k, v := range labels {
if _, exists := s.Labels[k]; !exists {
s.Labels[k] = v
}
}
// Add annotations from the image
imgAnnotations, err := newImage.Annotations(ctx)
if err != nil {
return nil, err
}
for k, v := range imgAnnotations {
annotations[k] = v
}
}
// in the event this container is in a pod, and the pod has an infra container
// we will want to configure it as a type "container" instead defaulting to
// the behavior of a "sandbox" container
// In Kata containers:
// - "sandbox" is the annotation that denotes the container should use its own
// VM, which is the default behavior
// - "container" denotes the container should join the VM of the SandboxID
// (the infra container)
if len(s.Pod) > 0 {
annotations[ann.SandboxID] = s.Pod
annotations[ann.ContainerType] = ann.ContainerTypeContainer
}
// now pass in the values from client
for k, v := range s.Annotations {
annotations[k] = v
}
s.Annotations = annotations
// workdir
if newImage != nil {
workingDir, err := newImage.WorkingDir(ctx)
if err != nil {
return nil, err
}
if len(s.WorkDir) < 1 && len(workingDir) > 1 {
s.WorkDir = workingDir
}
}
if len(s.SeccompProfilePath) < 1 {
p, err := libpod.DefaultSeccompPath()
if err != nil {
return nil, err
}
s.SeccompProfilePath = p
}
if len(s.User) == 0 && newImage != nil {
s.User, err = newImage.User(ctx)
if err != nil {
return nil, err
}
}
if err := finishThrottleDevices(s); err != nil {
return nil, err
}
// Unless already set via the CLI, check if we need to disable process
// labels or set the defaults.
if len(s.SelinuxOpts) == 0 {
if err := setLabelOpts(s, r, s.PidNS, s.IpcNS); err != nil {
return nil, err
}
}
// If caller did not specify Pids Limits load default
if s.ResourceLimits == nil || s.ResourceLimits.Pids == nil {
if s.CgroupsMode != "disabled" {
limit := rtc.PidsLimit()
if limit != 0 {
if s.ResourceLimits == nil {
s.ResourceLimits = &spec.LinuxResources{}
}
s.ResourceLimits.Pids = &spec.LinuxPids{
Limit: limit,
}
}
}
}
return verifyContainerResources(s)
}
// finishThrottleDevices takes the temporary representation of the throttle
// devices in the specgen and looks up the major and major minors. it then
// sets the throttle devices proper in the specgen
func finishThrottleDevices(s *specgen.SpecGenerator) error {
if bps := s.ThrottleReadBpsDevice; len(bps) > 0 {
for k, v := range bps {
statT := unix.Stat_t{}
if err := unix.Stat(k, &statT); err != nil {
return err
}
v.Major = (int64(unix.Major(statT.Rdev)))
v.Minor = (int64(unix.Minor(statT.Rdev)))
s.ResourceLimits.BlockIO.ThrottleReadBpsDevice = append(s.ResourceLimits.BlockIO.ThrottleReadBpsDevice, v)
}
}
if bps := s.ThrottleWriteBpsDevice; len(bps) > 0 {
for k, v := range bps {
statT := unix.Stat_t{}
if err := unix.Stat(k, &statT); err != nil {
return err
}
v.Major = (int64(unix.Major(statT.Rdev)))
v.Minor = (int64(unix.Minor(statT.Rdev)))
s.ResourceLimits.BlockIO.ThrottleWriteBpsDevice = append(s.ResourceLimits.BlockIO.ThrottleWriteBpsDevice, v)
}
}
if iops := s.ThrottleReadIOPSDevice; len(iops) > 0 {
for k, v := range iops {
statT := unix.Stat_t{}
if err := unix.Stat(k, &statT); err != nil {
return err
}
v.Major = (int64(unix.Major(statT.Rdev)))
v.Minor = (int64(unix.Minor(statT.Rdev)))
s.ResourceLimits.BlockIO.ThrottleReadIOPSDevice = append(s.ResourceLimits.BlockIO.ThrottleReadIOPSDevice, v)
}
}
if iops := s.ThrottleWriteIOPSDevice; len(iops) > 0 {
for k, v := range iops {
statT := unix.Stat_t{}
if err := unix.Stat(k, &statT); err != nil {
return err
}
v.Major = (int64(unix.Major(statT.Rdev)))
v.Minor = (int64(unix.Minor(statT.Rdev)))
s.ResourceLimits.BlockIO.ThrottleWriteIOPSDevice = append(s.ResourceLimits.BlockIO.ThrottleWriteIOPSDevice, v)
}
}
return nil
}
|
