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
|
package integration
import (
"os"
"strconv"
"strings"
. "github.com/containers/podman/v3/test/utils"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
"github.com/syndtr/gocapability/capability"
)
// helper function for confirming that container capabilities are equal
// to those of the host, but only to the extent of caps we (podman)
// know about at compile time. That is: the kernel may have more caps
// available than we are aware of, leading to host=FFF... and ctr=3FF...
// because the latter is all we request. Accept that.
func containerCapMatchesHost(ctrCap string, hostCap string) {
if isRootless() {
return
}
ctrCap_n, err := strconv.ParseUint(ctrCap, 16, 64)
Expect(err).NotTo(HaveOccurred(), "Error parsing %q as hex", ctrCap)
hostCap_n, err := strconv.ParseUint(hostCap, 16, 64)
Expect(err).NotTo(HaveOccurred(), "Error parsing %q as hex", hostCap)
// host caps can never be zero (except rootless).
// and host caps must always be a superset (inclusive) of container
Expect(hostCap_n).To(BeNumerically(">", 0), "host cap %q should be nonzero", hostCap)
Expect(hostCap_n).To(BeNumerically(">=", ctrCap_n), "host cap %q should never be less than container cap %q", hostCap, ctrCap)
hostCap_masked := hostCap_n & (1<<len(capability.List()) - 1)
Expect(ctrCap_n).To(Equal(hostCap_masked), "container cap %q is not a subset of host cap %q", ctrCap, hostCap)
}
var _ = Describe("Podman privileged container tests", func() {
var (
tempdir string
err error
podmanTest *PodmanTestIntegration
)
BeforeEach(func() {
tempdir, err = CreateTempDirInTempDir()
if err != nil {
os.Exit(1)
}
podmanTest = PodmanTestCreate(tempdir)
podmanTest.Setup()
podmanTest.SeedImages()
})
AfterEach(func() {
podmanTest.Cleanup()
f := CurrentGinkgoTestDescription()
processTestResult(f)
})
It("podman privileged make sure sys is mounted rw", func() {
session := podmanTest.Podman([]string{"run", "--privileged", "busybox", "mount"})
session.WaitWithDefaultTimeout()
Expect(session.ExitCode()).To(Equal(0))
ok, lines := session.GrepString("sysfs")
Expect(ok).To(BeTrue())
Expect(lines[0]).To(ContainSubstring("sysfs (rw,"))
})
It("podman privileged CapEff", func() {
hostCap := SystemExec("awk", []string{"/^CapEff/ { print $2 }", "/proc/self/status"})
Expect(hostCap.ExitCode()).To(Equal(0))
session := podmanTest.Podman([]string{"run", "--privileged", "busybox", "awk", "/^CapEff/ { print $2 }", "/proc/self/status"})
session.WaitWithDefaultTimeout()
Expect(session.ExitCode()).To(Equal(0))
containerCapMatchesHost(session.OutputToString(), hostCap.OutputToString())
})
It("podman cap-add CapEff", func() {
// Get caps of current process
hostCap := SystemExec("awk", []string{"/^CapEff/ { print $2 }", "/proc/self/status"})
Expect(hostCap.ExitCode()).To(Equal(0))
session := podmanTest.Podman([]string{"run", "--cap-add", "all", "busybox", "awk", "/^CapEff/ { print $2 }", "/proc/self/status"})
session.WaitWithDefaultTimeout()
Expect(session.ExitCode()).To(Equal(0))
containerCapMatchesHost(session.OutputToString(), hostCap.OutputToString())
})
It("podman cap-add CapEff with --user", func() {
// Get caps of current process
hostCap := SystemExec("awk", []string{"/^CapEff/ { print $2 }", "/proc/self/status"})
Expect(hostCap.ExitCode()).To(Equal(0))
session := podmanTest.Podman([]string{"run", "--user=bin", "--cap-add", "all", "busybox", "awk", "/^CapEff/ { print $2 }", "/proc/self/status"})
session.WaitWithDefaultTimeout()
Expect(session.ExitCode()).To(Equal(0))
containerCapMatchesHost(session.OutputToString(), hostCap.OutputToString())
})
It("podman cap-drop CapEff", func() {
session := podmanTest.Podman([]string{"run", "--cap-drop", "all", "busybox", "grep", "CapEff", "/proc/self/status"})
session.WaitWithDefaultTimeout()
Expect(session.ExitCode()).To(Equal(0))
capEff := strings.Split(session.OutputToString(), " ")
Expect("0000000000000000").To(Equal(capEff[1]))
})
It("podman privileged should disable seccomp by default", func() {
hostSeccomp := SystemExec("grep", []string{"-Ei", "^Seccomp:\\s+0$", "/proc/self/status"})
Expect(hostSeccomp.ExitCode()).To(Equal(0))
session := podmanTest.Podman([]string{"run", "--privileged", ALPINE, "grep", "-Ei", "^Seccomp:\\s+0$", "/proc/self/status"})
session.WaitWithDefaultTimeout()
Expect(session.ExitCode()).To(Equal(0))
})
It("podman non-privileged should have very few devices", func() {
session := podmanTest.Podman([]string{"run", "-t", "busybox", "ls", "-l", "/dev"})
session.WaitWithDefaultTimeout()
Expect(session.ExitCode()).To(Equal(0))
Expect(len(session.OutputToStringArray())).To(Equal(17))
})
It("podman privileged should inherit host devices", func() {
SkipIfRootless("FIXME: This seems to be broken for rootless mode, /dev/ is close to the same")
session := podmanTest.Podman([]string{"run", "--privileged", ALPINE, "ls", "-l", "/dev"})
session.WaitWithDefaultTimeout()
Expect(session.ExitCode()).To(Equal(0))
Expect(len(session.OutputToStringArray())).To(BeNumerically(">", 20))
})
It("run no-new-privileges test", func() {
// Check if our kernel is new enough
k, err := IsKernelNewerThan("4.14")
Expect(err).To(BeNil())
if !k {
Skip("Kernel is not new enough to test this feature")
}
cap := SystemExec("grep", []string{"NoNewPrivs", "/proc/self/status"})
if cap.ExitCode() != 0 {
Skip("Can't determine NoNewPrivs")
}
session := podmanTest.Podman([]string{"run", "busybox", "grep", "NoNewPrivs", "/proc/self/status"})
session.WaitWithDefaultTimeout()
Expect(session.ExitCode()).To(Equal(0))
privs := strings.Split(session.OutputToString(), ":")
session = podmanTest.Podman([]string{"run", "--security-opt", "no-new-privileges", "busybox", "grep", "NoNewPrivs", "/proc/self/status"})
session.WaitWithDefaultTimeout()
Expect(session.ExitCode()).To(Equal(0))
noprivs := strings.Split(session.OutputToString(), ":")
Expect(privs[1]).To(Not(Equal(noprivs[1])))
})
})
|
