aboutsummaryrefslogtreecommitdiff
path: root/cmd/podman/common.go
blob: e297f392190701109caa9d255a3f377a84e2f7ab (plain)
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
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
package main

import (
	"context"
	"fmt"
	"github.com/spf13/cobra"
	"os"
	"strings"

	"github.com/containers/buildah"
	"github.com/containers/libpod/cmd/podman/cliconfig"
	"github.com/containers/libpod/libpod"
	"github.com/containers/libpod/pkg/rootless"
	"github.com/containers/storage"
	"github.com/fatih/camelcase"
	"github.com/pkg/errors"
)

var (
	stores = make(map[storage.Store]struct{})
)

const (
	idTruncLength = 12
)

func splitCamelCase(src string) string {
	entries := camelcase.Split(src)
	return strings.Join(entries, " ")
}

func shortID(id string) string {
	if len(id) > idTruncLength {
		return id[:idTruncLength]
	}
	return id
}

// checkAllAndLatest checks that --all and --latest are used correctly
func checkAllAndLatest(c *cobra.Command, args []string, ignoreArgLen bool) error {
	argLen := len(args)
	if c.Flags().Lookup("all") == nil || c.Flags().Lookup("latest") == nil {
		return errors.New("unable to lookup values for 'latest' or 'all'")
	}
	all, _ := c.Flags().GetBool("all")
	latest, _ := c.Flags().GetBool("latest")
	if all && latest {
		return errors.Errorf("--all and --latest cannot be used together")
	}
	if ignoreArgLen {
		return nil
	}
	if (all || latest) && argLen > 0 {
		return errors.Errorf("no arguments are needed with --all or --latest")
	}
	if argLen < 1 && !all && !latest {
		return errors.Errorf("you must provide at least one name or id")
	}
	return nil
}

// getAllOrLatestContainers tries to return the correct list of containers
// depending if --all, --latest or <container-id> is used.
// It requires the Context (c) and the Runtime (runtime). As different
// commands are using different container state for the --all option
// the desired state has to be specified in filterState. If no filter
// is desired a -1 can be used to get all containers. For a better
// error message, if the filter fails, a corresponding verb can be
// specified which will then appear in the error message.
func getAllOrLatestContainers(c *cliconfig.PodmanCommand, runtime *libpod.Runtime, filterState libpod.ContainerStatus, verb string) ([]*libpod.Container, error) {
	var containers []*libpod.Container
	var lastError error
	var err error
	if c.Bool("all") {
		if filterState != -1 {
			var filterFuncs []libpod.ContainerFilter
			filterFuncs = append(filterFuncs, func(c *libpod.Container) bool {
				state, _ := c.State()
				return state == filterState
			})
			containers, err = runtime.GetContainers(filterFuncs...)
		} else {
			containers, err = runtime.GetContainers()
		}
		if err != nil {
			return nil, errors.Wrapf(err, "unable to get %s containers", verb)
		}
	} else if c.Bool("latest") {
		lastCtr, err := runtime.GetLatestContainer()
		if err != nil {
			return nil, errors.Wrapf(err, "unable to get latest container")
		}
		containers = append(containers, lastCtr)
	} else {
		args := c.InputArgs
		for _, i := range args {
			container, err := runtime.LookupContainer(i)
			if err != nil {
				if lastError != nil {
					fmt.Fprintln(os.Stderr, lastError)
				}
				lastError = errors.Wrapf(err, "unable to find container %s", i)
			}
			if container != nil {
				// This is here to make sure this does not return [<nil>] but only nil
				containers = append(containers, container)
			}
		}
	}

	return containers, lastError
}

// getContext returns a non-nil, empty context
func getContext() context.Context {
	if Ctx != nil {
		return Ctx
	}
	return context.TODO()
}

func getDefaultNetwork() string {
	if rootless.IsRootless() {
		return "slirp4netns"
	}
	return "bridge"
}

func getCreateFlags(c *cliconfig.PodmanCommand) {

	createFlags := c.Flags()

	createFlags.StringSlice(
		"add-host", []string{},
		"Add a custom host-to-IP mapping (host:ip) (default [])",
	)
	createFlags.StringSlice(
		"annotation", []string{},
		"Add annotations to container (key:value) (default [])",
	)
	createFlags.StringSliceP(
		"attach", "a", []string{},
		"Attach to STDIN, STDOUT or STDERR (default [])",
	)
	createFlags.String(
		"blkio-weight", "",
		"Block IO weight (relative weight) accepts a weight value between 10 and 1000.",
	)
	createFlags.StringSlice(
		"blkio-weight-device", []string{},
		"Block IO weight (relative device weight, format: `DEVICE_NAME:WEIGHT`)",
	)
	createFlags.StringSlice(
		"cap-add", []string{},
		"Add capabilities to the container",
	)
	createFlags.StringSlice(
		"cap-drop", []string{},
		"Drop capabilities from the container",
	)
	createFlags.String(
		"cgroup-parent", "",
		"Optional parent cgroup for the container",
	)
	createFlags.String(
		"cidfile", "",
		"Write the container ID to the file",
	)
	createFlags.String(
		"conmon-pidfile", "",
		"Path to the file that will receive the PID of conmon",
	)
	createFlags.Uint64(
		"cpu-period", 0,
		"Limit the CPU CFS (Completely Fair Scheduler) period",
	)
	createFlags.Int64(
		"cpu-quota", 0,
		"Limit the CPU CFS (Completely Fair Scheduler) quota",
	)
	createFlags.Uint64(
		"cpu-rt-period", 0,
		"Limit the CPU real-time period in microseconds",
	)
	createFlags.Int64(
		"cpu-rt-runtime", 0,
		"Limit the CPU real-time runtime in microseconds",
	)
	createFlags.Uint64(
		"cpu-shares", 0,
		"CPU shares (relative weight)",
	)
	createFlags.Float64(
		"cpus", 0,
		"Number of CPUs. The default is 0.000 which means no limit",
	)
	createFlags.String(
		"cpuset-cpus", "",
		"CPUs in which to allow execution (0-3, 0,1)",
	)
	createFlags.String(
		"cpuset-mems", "",
		"Memory nodes (MEMs) in which to allow execution (0-3, 0,1). Only effective on NUMA systems.",
	)
	createFlags.BoolP(
		"detach", "d", false,
		"Run container in background and print container ID",
	)
	createFlags.String(
		"detach-keys", "",
		"Override the key sequence for detaching a container. Format is a single character `[a-Z]` or `ctrl-<value>` where `<value>` is one of: `a-z`, `@`, `^`, `[`, `,` or `_`",
	)
	createFlags.StringSlice(
		"device", []string{},
		"Add a host device to the container (default [])",
	)
	createFlags.StringSlice(
		"device-read-bps", []string{},
		"Limit read rate (bytes per second) from a device (e.g. --device-read-bps=/dev/sda:1mb)",
	)
	createFlags.StringSlice(
		"device-read-iops", []string{},
		"Limit read rate (IO per second) from a device (e.g. --device-read-iops=/dev/sda:1000)",
	)
	createFlags.StringSlice(
		"device-write-bps", []string{},
		"Limit write rate (bytes per second) to a device (e.g. --device-write-bps=/dev/sda:1mb)",
	)
	createFlags.StringSlice(
		"device-write-iops", []string{},
		"Limit write rate (IO per second) to a device (e.g. --device-write-iops=/dev/sda:1000)",
	)
	createFlags.StringSlice(
		"dns", []string{},
		"Set custom DNS servers",
	)
	createFlags.StringSlice(
		"dns-opt", []string{},
		"Set custom DNS options",
	)
	createFlags.StringSlice(
		"dns-search", []string{},
		"Set custom DNS search domains",
	)
	createFlags.String(
		"entrypoint", "",
		"Overwrite the default ENTRYPOINT of the image",
	)
	createFlags.StringSliceP(
		"env", "e", []string{},
		"Set environment variables in container",
	)
	createFlags.StringSlice(
		"env-file", []string{},
		"Read in a file of environment variables",
	)
	createFlags.StringSlice(
		"expose", []string{},
		"Expose a port or a range of ports (default [])",
	)
	createFlags.StringSlice(
		"gidmap", []string{},
		"GID map to use for the user namespace",
	)
	createFlags.StringSlice(
		"group-add", []string{},
		"Add additional groups to join (default [])",
	)
	createFlags.Bool(
		"help", false, "",
	)

	createFlags.StringP(
		"hostname", "h", "",
		"Set container hostname",
	)
	createFlags.String(
		"image-volume", "bind",
		"Tells podman how to handle the builtin image volumes. The options are: 'bind', 'tmpfs', or 'ignore' (default 'bind')",
	)
	createFlags.Bool(
		"init", false,
		"Run an init binary inside the container that forwards signals and reaps processes",
	)
	createFlags.String(
		"init-path", "",
		// Do not use  the Value field for setting the default value to determine user input (i.e., non-empty string)
		fmt.Sprintf("Path to the container-init binary (default: %q)", libpod.DefaultInitPath),
	)
	createFlags.BoolP(
		"interactive", "i", false,
		"Keep STDIN open even if not attached",
	)
	createFlags.String(
		"ip", "",
		"Specify a static IPv4 address for the container",
	)
	createFlags.String(
		"ipc", "",
		"IPC namespace to use",
	)
	createFlags.String(
		"kernel-memory", "",
		"Kernel memory limit (format: `<number>[<unit>]`, where unit = b, k, m or g)",
	)
	createFlags.StringSlice(
		"label", []string{},
		"Set metadata on container (default [])",
	)
	createFlags.StringSlice(
		"label-file", []string{},
		"Read in a line delimited file of labels (default [])",
	)
	createFlags.String(
		"log-driver", "",
		"Logging driver for the container",
	)
	createFlags.StringSlice(
		"log-opt", []string{},
		"Logging driver options (default [])",
	)
	createFlags.String(
		"mac-address", "",
		"Container MAC address (e.g. 92:d0:c6:0a:29:33), not currently supported",
	)
	createFlags.StringP(
		"memory", "m", "",
		"Memory limit (format: <number>[<unit>], where unit = b, k, m or g)",
	)
	createFlags.String(
		"memory-reservation", "",
		"Memory soft limit (format: <number>[<unit>], where unit = b, k, m or g)",
	)
	createFlags.String(
		"memory-swap", "",
		"Swap limit equal to memory plus swap: '-1' to enable unlimited swap",
	)
	createFlags.Int64(
		"memory-swappiness", -1,
		"Tune container memory swappiness (0 to 100) (default -1)",
	)
	createFlags.String(
		"name", "",
		"Assign a name to the container",
	)
	createFlags.String(
		"net", getDefaultNetwork(),
		"Connect a container to a network",
	)
	createFlags.String(
		"network", getDefaultNetwork(),
		"Connect a container to a network",
	)
	createFlags.Bool(
		"oom-kill-disable", false,
		"Disable OOM Killer",
	)
	createFlags.Int(
		"oom-score-adj", 0,
		"Tune the host's OOM preferences (-1000 to 1000)",
	)
	createFlags.String(
		"pid", "",
		"PID namespace to use",
	)
	createFlags.Int64(
		"pids-limit", 0,
		"Tune container pids limit (set -1 for unlimited)",
	)
	createFlags.String(
		"pod", "",
		"Run container in an existing pod",
	)
	createFlags.Bool(
		"privileged", false,
		"Give extended privileges to container",
	)
	createFlags.StringSliceP(
		"publish", "p", []string{},
		"Publish a container's port, or a range of ports, to the host (default [])",
	)
	createFlags.BoolP(
		"publish-all", "P", false,
		"Publish all exposed ports to random ports on the host interface",
	)
	createFlags.BoolP(
		"quiet", "q", false,
		"Suppress output information when pulling images",
	)
	createFlags.Bool(
		"read-only", false,
		"Make containers root filesystem read-only",
	)
	createFlags.String(
		"restart", "",
		"Restart is not supported.  Please use a systemd unit file for restart",
	)
	createFlags.Bool(
		"rm", false,
		"Remove container (and pod if created) after exit",
	)
	createFlags.Bool(
		"rootfs", false,
		"The first argument is not an image but the rootfs to the exploded container",
	)
	createFlags.StringArray(
		"security-opt", []string{},
		"Security Options (default [])",
	)
	createFlags.String(
		"shm-size", "65536k",
		"Size of `/dev/shm`. The format is `<number><unit>`",
	)
	createFlags.String(
		"stop-signal", "",
		"Signal to stop a container. Default is SIGTERM",
	)
	createFlags.Int(
		"stop-timeout", libpod.CtrRemoveTimeout,
		"Timeout (in seconds) to stop a container. Default is 10",
	)
	createFlags.StringSlice(
		"storage-opt", []string{},
		"Storage driver options per container (default [])",
	)
	createFlags.String(
		"subgidname", "",
		"Name of range listed in /etc/subgid for use in user namespace",
	)
	createFlags.String(
		"subuidname", "",
		"Name of range listed in /etc/subuid for use in user namespace",
	)

	createFlags.StringSlice(
		"sysctl", []string{},
		"Sysctl options (default [])",
	)
	createFlags.Bool(
		"systemd", true,
		"Run container in systemd mode if the command executable is systemd or init",
	)
	createFlags.StringSlice(
		"tmpfs", []string{},
		"Mount a temporary filesystem (`tmpfs`) into a container (default [])",
	)
	createFlags.BoolP(
		"tty", "t", false,
		"Allocate a pseudo-TTY for container",
	)
	createFlags.StringSlice(
		"uidmap", []string{},
		"UID map to use for the user namespace",
	)
	createFlags.StringSlice(
		"ulimit", []string{},
		"Ulimit options (default [])",
	)
	createFlags.StringP(
		"user", "u", "",
		"Username or UID (format: <name|uid>[:<group|gid>])",
	)
	createFlags.String(
		"userns", "",
		"User namespace to use",
	)
	createFlags.String(
		"uts", "",
		"UTS namespace to use",
	)
	createFlags.StringArray(
		"mount", []string{},
		"Attach a filesystem mount to the container (default [])",
	)
	createFlags.StringArrayP(
		"volume", "v", []string{},
		"Bind mount a volume into the container (default [])",
	)
	createFlags.StringSlice(
		"volumes-from", []string{},
		"Mount volumes from the specified container(s) (default [])",
	)
	createFlags.StringP(
		"workdir", "w", "",
		"Working directory inside the container",
	)
}

func getFormat(c *cliconfig.PodmanCommand) (string, error) {
	format := strings.ToLower(c.String("format"))
	if strings.HasPrefix(format, buildah.OCI) {
		return buildah.OCIv1ImageManifest, nil
	}

	if strings.HasPrefix(format, buildah.DOCKER) {
		return buildah.Dockerv2ImageManifest, nil
	}
	return "", errors.Errorf("unrecognized image type %q", format)
}

func getAuthFile(authfile string) string {
	if authfile != "" {
		return authfile
	}
	return os.Getenv("REGISTRY_AUTH_FILE")
}

// scrubServer removes 'http://' or 'https://' from the front of the
// server/registry string if either is there.  This will be mostly used
// for user input from 'podman login' and 'podman logout'.
func scrubServer(server string) string {
	server = strings.TrimPrefix(server, "https://")
	return strings.TrimPrefix(server, "http://")
}

// UsageTemplate returns the usage template for podman commands
// This blocks the desplaying of the global options. The main podman
// command should not use this.
func UsageTemplate() string {
	return `Usage:{{if .Runnable}}
  {{.UseLine}}{{end}}{{if .HasAvailableSubCommands}}

  {{.CommandPath}} [command]{{end}}{{if gt (len .Aliases) 0}}

Aliases:
  {{.NameAndAliases}}{{end}}{{if .HasExample}}

Examples:
  {{.Example}}{{end}}{{if .HasAvailableSubCommands}}

Available Commands:{{range .Commands}}{{if (or .IsAvailableCommand (eq .Name "help"))}}
  {{rpad .Name .NamePadding }} {{.Short}}{{end}}{{end}}{{end}}{{if .HasAvailableLocalFlags}}

Flags:
{{.LocalFlags.FlagUsages | trimTrailingWhitespaces}}{{end}}{{if .HasAvailableInheritedFlags}}
{{end}}
`
}