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
|
package generate
import (
"strconv"
"strings"
"github.com/containers/podman/v3/pkg/systemd/define"
"github.com/pkg/errors"
)
// minTimeoutStopSec is the minimal stop timeout for generated systemd units.
// Once exceeded, processes of the services are killed and the cgroup(s) are
// cleaned up.
const minTimeoutStopSec = 60
// validateRestartPolicy checks that the user-provided policy is valid.
func validateRestartPolicy(restart string) error {
for _, i := range define.RestartPolicies {
if i == restart {
return nil
}
}
return errors.Errorf("%s is not a valid restart policy", restart)
}
const headerTemplate = `# {{{{.ServiceName}}}}.service
{{{{- if (eq .GenerateNoHeader false) }}}}
# autogenerated by Podman {{{{.PodmanVersion}}}}
{{{{- if .TimeStamp}}}}
# {{{{.TimeStamp}}}}
{{{{- end}}}}
{{{{- end}}}}
[Unit]
Description=Podman {{{{.ServiceName}}}}.service
Documentation=man:podman-generate-systemd(1)
Wants=network-online.target
After=network-online.target
RequiresMountsFor={{{{.RunRoot}}}}
`
// filterPodFlags removes --pod, --pod-id-file and --infra-conmon-pidfile from the specified command.
// argCount is the number of last arguments which should not be filtered, e.g. the container entrypoint.
func filterPodFlags(command []string, argCount int) []string {
processed := []string{}
for i := 0; i < len(command)-argCount; i++ {
s := command[i]
if s == "--pod" || s == "--pod-id-file" || s == "--infra-conmon-pidfile" {
i++
continue
}
if strings.HasPrefix(s, "--pod=") ||
strings.HasPrefix(s, "--pod-id-file=") ||
strings.HasPrefix(s, "--infra-conmon-pidfile=") {
continue
}
processed = append(processed, s)
}
processed = append(processed, command[len(command)-argCount:]...)
return processed
}
// filterCommonContainerFlags removes --sdnotify, --rm and --cgroups from the specified command.
// argCount is the number of last arguments which should not be filtered, e.g. the container entrypoint.
func filterCommonContainerFlags(command []string, argCount int) []string {
processed := []string{}
for i := 0; i < len(command)-argCount; i++ {
s := command[i]
switch {
case s == "--rm":
// Boolean flags support --flag and --flag={true,false}.
continue
case s == "--sdnotify", s == "--cgroups":
i++
continue
case strings.HasPrefix(s, "--rm="),
strings.HasPrefix(s, "--cgroups="):
continue
}
processed = append(processed, s)
}
processed = append(processed, command[len(command)-argCount:]...)
return processed
}
// escapeSystemdArguments makes sure that all arguments with at least one whitespace
// are quoted to make sure those are interpreted as one argument instead of
// multiple ones. Also make sure to escape all characters which have a special
// meaning to systemd -> $,% and \
// see: https://www.freedesktop.org/software/systemd/man/systemd.service.html#Command%20lines
func escapeSystemdArguments(command []string) []string {
for i := range command {
command[i] = escapeSystemdArg(command[i])
}
return command
}
func escapeSystemdArg(arg string) string {
arg = strings.ReplaceAll(arg, "$", "$$")
arg = strings.ReplaceAll(arg, "%", "%%")
if strings.ContainsAny(arg, " \t") {
arg = strconv.Quote(arg)
} else if strings.Contains(arg, `\`) {
// strconv.Quote also escapes backslashes so
// we should replace only if strconv.Quote was not used
arg = strings.ReplaceAll(arg, `\`, `\\`)
}
return arg
}
func removeDetachArg(args []string, argCount int) []string {
// "--detach=false" could also be in the container entrypoint
// split them off so we do not remove it there
realArgs := args[len(args)-argCount:]
flagArgs := removeArg("-d=false", args[:len(args)-argCount])
flagArgs = removeArg("--detach=false", flagArgs)
return append(flagArgs, realArgs...)
}
func removeReplaceArg(args []string, argCount int) []string {
// "--replace=false" could also be in the container entrypoint
// split them off so we do not remove it there
realArgs := args[len(args)-argCount:]
flagArgs := removeArg("--replace=false", args[:len(args)-argCount])
return append(flagArgs, realArgs...)
}
func removeArg(arg string, args []string) []string {
newArgs := []string{}
for _, a := range args {
if a != arg {
newArgs = append(newArgs, a)
}
}
return newArgs
}
|
