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
|
//go:build linux || freebsd
package integration
import (
"fmt"
"io"
"os"
"path/filepath"
"strings"
"syscall"
"time"
. "github.com/containers/podman/v5/test/utils"
. "github.com/onsi/ginkgo/v2"
. "github.com/onsi/gomega"
"golang.org/x/sys/unix"
)
const sigCatch = "trap \"echo FOO >> /h/fifo \" 8; echo READY >> /h/fifo; while :; do sleep 0.25; done"
const sigCatch2 = "trap \"echo Received\" SIGFPE; while :; do sleep 0.25; done"
var _ = Describe("Podman run with --sig-proxy", func() {
Specify("signals are forwarded to container using sig-proxy", func() {
if podmanTest.Host.Arch == "ppc64le" {
Skip("Doesn't work on ppc64le")
}
signal := syscall.SIGFPE
// Set up a socket for communication
udsDir := filepath.Join(tempdir, "socket")
err := os.Mkdir(udsDir, 0o700)
Expect(err).ToNot(HaveOccurred())
udsPath := filepath.Join(udsDir, "fifo")
err = syscall.Mkfifo(udsPath, 0o600)
Expect(err).ToNot(HaveOccurred())
if isRootless() {
err = podmanTest.RestoreArtifact(fedoraMinimal)
Expect(err).ToNot(HaveOccurred())
}
_, pid := podmanTest.PodmanPID([]string{"run", "-v", fmt.Sprintf("%s:/h:Z", udsDir), fedoraMinimal, "bash", "-c", sigCatch})
uds, _ := os.OpenFile(udsPath, os.O_RDONLY|syscall.O_NONBLOCK, 0o600)
defer uds.Close()
// Wait for the script in the container to alert us that it is READY
counter := 0
for {
buf := make([]byte, 1024)
n, err := uds.Read(buf)
if err != nil && err != io.EOF {
GinkgoWriter.Println(err)
return
}
data := string(buf[0:n])
if strings.Contains(data, "READY") {
break
}
time.Sleep(1 * time.Second)
if counter == 15 {
Fail("Timed out waiting for READY from container")
}
counter++
}
// Ok, container is up and running now and so is the script
if err := unix.Kill(pid, signal); err != nil {
Fail(fmt.Sprintf("error killing podman process %d: %v", pid, err))
}
// The sending of the signal above will send FOO to the socket; here we
// listen to the socket for that.
counter = 0
for {
buf := make([]byte, 1024)
n, err := uds.Read(buf)
if err != nil {
GinkgoWriter.Println(err)
return
}
data := string(buf[0:n])
if strings.Contains(data, "FOO") {
break
}
time.Sleep(1 * time.Second)
if counter == 15 {
Fail("timed out waiting for FOO from container")
}
counter++
}
})
Specify("signals are not forwarded to container with sig-proxy false", func() {
signal := syscall.SIGFPE
session, pid := podmanTest.PodmanPID([]string{"run", "--name", "test2", "--sig-proxy=false", fedoraMinimal, "bash", "-c", sigCatch2})
Expect(WaitForContainer(podmanTest)).To(BeTrue(), "WaitForContainer()")
// Kill with given signal
// Should be no output, SIGPOLL is usually ignored
if err := unix.Kill(pid, signal); err != nil {
Fail(fmt.Sprintf("error killing podman process %d: %v", pid, err))
}
// Kill with -9 to guarantee the container dies
killSession := podmanTest.Podman([]string{"kill", "-s", "9", "test2"})
killSession.WaitWithDefaultTimeout()
Expect(killSession).Should(ExitCleanly())
session.WaitWithDefaultTimeout()
// Exit code is normally 2, however with GOTRACEBACK=crash (default in
// Fedora/RHEL rpm builds) it will be 134 thus allow both.
// https://github.com/containers/podman/issues/24213
errorMsg := "SIGFPE: floating-point exception"
Expect(session).To(Or(ExitWithError(2, errorMsg), ExitWithError(134, errorMsg)))
Expect(session.OutputToString()).To(Not(ContainSubstring("Received")))
})
})
|
