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syscall: fix TestCloneNEWUSERAndRemapNoRootDisableSetgroups the right way

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The problem was not the kernel version as I thought before, it was
that the test used the same number for both the UID and the GID.
Thanks to Chris Siebenmann for debugging this.

Fixes #11220.

Change-Id: Ib5077e182497155e84044683209590ee0f7c9dde
Reviewed-on: https://go-review.googlesource.com/11124
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
This commit is contained in:
Ian Lance Taylor 2015-06-15 11:35:56 -07:00
parent 4dab6d01f1
commit 6f0e427298
1 changed files with 8 additions and 15 deletions
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23
src/syscall/exec_linux_test.go
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@ -17,7 +17,7 @@ import (
"testing"
)
func whoamiCmd(t *testing.T, uid int, setgroups bool) *exec.Cmd {
func whoamiCmd(t *testing.T, uid, gid int, setgroups bool) *exec.Cmd {
if _, err := os.Stat("/proc/self/ns/user"); err != nil {
if os.IsNotExist(err) {
t.Skip("kernel doesn't support user namespaces")
@ -31,15 +31,15 @@ func whoamiCmd(t *testing.T, uid int, setgroups bool) *exec.Cmd {
{ContainerID: 0, HostID: uid, Size: 1},
},
GidMappings: []syscall.SysProcIDMap{
{ContainerID: 0, HostID: uid, Size: 1},
{ContainerID: 0, HostID: gid, Size: 1},
},
GidMappingsEnableSetgroups: setgroups,
}
return cmd
}
func testNEWUSERRemap(t *testing.T, uid int, setgroups bool) {
cmd := whoamiCmd(t, uid, setgroups)
func testNEWUSERRemap(t *testing.T, uid, gid int, setgroups bool) {
cmd := whoamiCmd(t, uid, gid, setgroups)
out, err := cmd.CombinedOutput()
if err != nil {
t.Fatalf("Cmd failed with err %v, output: %s", err, out)
@ -55,14 +55,14 @@ func TestCloneNEWUSERAndRemapRootDisableSetgroups(t *testing.T) {
if os.Getuid() != 0 {
t.Skip("skipping root only test")
}
testNEWUSERRemap(t, 0, false)
testNEWUSERRemap(t, 0, 0, false)
}
func TestCloneNEWUSERAndRemapRootEnableSetgroups(t *testing.T) {
if os.Getuid() != 0 {
t.Skip("skipping root only test")
}
testNEWUSERRemap(t, 0, false)
testNEWUSERRemap(t, 0, 0, false)
}
// kernelVersion returns the major and minor versions of the Linux
@ -85,21 +85,14 @@ func TestCloneNEWUSERAndRemapNoRootDisableSetgroups(t *testing.T) {
if os.Getuid() == 0 {
t.Skip("skipping unprivileged user only test")
}
// This test fails for some reason on Ubuntu Trusty.
major, minor := kernelVersion(t)
if major < 3 || (major == 3 && minor < 19) {
t.Skipf("skipping on kernel version before 3.19 (%d.%d)", major, minor)
}
testNEWUSERRemap(t, os.Getuid(), false)
testNEWUSERRemap(t, os.Getuid(), os.Getgid(), false)
}
func TestCloneNEWUSERAndRemapNoRootSetgroupsEnableSetgroups(t *testing.T) {
if os.Getuid() == 0 {
t.Skip("skipping unprivileged user only test")
}
cmd := whoamiCmd(t, os.Getuid(), true)
cmd := whoamiCmd(t, os.Getuid(), os.Getgid(), true)
err := cmd.Run()
if err == nil {
t.Skip("probably old kernel without security fix")