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only relabel cri managed host mounts

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Co-authored-by: Samuel Karp <skarp@amazon.com>
Signed-off-by: Michael Crosby <michael@thepasture.io>
Signed-off-by: Samuel Karp <skarp@amazon.com>
This commit is contained in:
Michael Crosby
2021-11-09 19:45:40 +00:00
committed by Samuel Karp
parent 432ddecaae
commit 9b0303913f
3 changed files with 57 additions and 67 deletions
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23
pkg/cri/server/container_create_linux.go
View File

@@ -68,18 +68,20 @@ func (c *criService) containerMounts(sandboxID string, config *runtime.Container
hostpath := c.getSandboxHostname(sandboxID)
if _, err := c.os.Stat(hostpath); err == nil {
mounts = append(mounts, &runtime.Mount{
ContainerPath: etcHostname,
HostPath: hostpath,
Readonly: securityContext.GetReadonlyRootfs(),
ContainerPath: etcHostname,
HostPath: hostpath,
Readonly: securityContext.GetReadonlyRootfs(),
SelinuxRelabel: true,
})
}
}
if !isInCRIMounts(etcHosts, config.GetMounts()) {
mounts = append(mounts, &runtime.Mount{
ContainerPath: etcHosts,
HostPath: c.getSandboxHosts(sandboxID),
Readonly: securityContext.GetReadonlyRootfs(),
ContainerPath: etcHosts,
HostPath: c.getSandboxHosts(sandboxID),
Readonly: securityContext.GetReadonlyRootfs(),
SelinuxRelabel: true,
})
}
@@ -87,9 +89,10 @@ func (c *criService) containerMounts(sandboxID string, config *runtime.Container
// TODO: Need to figure out whether we should always mount it as read-only
if !isInCRIMounts(resolvConfPath, config.GetMounts()) {
mounts = append(mounts, &runtime.Mount{
ContainerPath: resolvConfPath,
HostPath: c.getResolvPath(sandboxID),
Readonly: securityContext.GetReadonlyRootfs(),
ContainerPath: resolvConfPath,
HostPath: c.getResolvPath(sandboxID),
Readonly: securityContext.GetReadonlyRootfs(),
SelinuxRelabel: true,
})
}
@@ -192,7 +195,7 @@ func (c *criService) containerSpec(
}
}()
specOpts = append(specOpts, customopts.WithMounts(c.os, config, extraMounts, mountLabel), customopts.WithRelabeledContainerMounts(mountLabel))
specOpts = append(specOpts, customopts.WithMounts(c.os, config, extraMounts, mountLabel))
if !c.config.DisableProcMount {
// Change the default masked/readonly paths to empty slices

77
pkg/cri/server/container_create_linux_test.go
View File

@@ -452,19 +452,22 @@ func TestContainerMounts(t *testing.T) {
},
expectedMounts: []*runtime.Mount{
{
ContainerPath: "/etc/hostname",
HostPath: filepath.Join(testRootDir, sandboxesDir, testSandboxID, "hostname"),
Readonly: true,
ContainerPath: "/etc/hostname",
HostPath: filepath.Join(testRootDir, sandboxesDir, testSandboxID, "hostname"),
Readonly: true,
SelinuxRelabel: true,
},
{
ContainerPath: "/etc/hosts",
HostPath: filepath.Join(testRootDir, sandboxesDir, testSandboxID, "hosts"),
Readonly: true,
ContainerPath: "/etc/hosts",
HostPath: filepath.Join(testRootDir, sandboxesDir, testSandboxID, "hosts"),
Readonly: true,
SelinuxRelabel: true,
},
{
ContainerPath: resolvConfPath,
HostPath: filepath.Join(testRootDir, sandboxesDir, testSandboxID, "resolv.conf"),
Readonly: true,
ContainerPath: resolvConfPath,
HostPath: filepath.Join(testRootDir, sandboxesDir, testSandboxID, "resolv.conf"),
Readonly: true,
SelinuxRelabel: true,
},
{
ContainerPath: "/dev/shm",
@@ -478,19 +481,22 @@ func TestContainerMounts(t *testing.T) {
securityContext: &runtime.LinuxContainerSecurityContext{},
expectedMounts: []*runtime.Mount{
{
ContainerPath: "/etc/hostname",
HostPath: filepath.Join(testRootDir, sandboxesDir, testSandboxID, "hostname"),
Readonly: false,
ContainerPath: "/etc/hostname",
HostPath: filepath.Join(testRootDir, sandboxesDir, testSandboxID, "hostname"),
Readonly: false,
SelinuxRelabel: true,
},
{
ContainerPath: "/etc/hosts",
HostPath: filepath.Join(testRootDir, sandboxesDir, testSandboxID, "hosts"),
Readonly: false,
ContainerPath: "/etc/hosts",
HostPath: filepath.Join(testRootDir, sandboxesDir, testSandboxID, "hosts"),
Readonly: false,
SelinuxRelabel: true,
},
{
ContainerPath: resolvConfPath,
HostPath: filepath.Join(testRootDir, sandboxesDir, testSandboxID, "resolv.conf"),
Readonly: false,
ContainerPath: resolvConfPath,
HostPath: filepath.Join(testRootDir, sandboxesDir, testSandboxID, "resolv.conf"),
Readonly: false,
SelinuxRelabel: true,
},
{
ContainerPath: "/dev/shm",
@@ -506,19 +512,22 @@ func TestContainerMounts(t *testing.T) {
},
expectedMounts: []*runtime.Mount{
{
ContainerPath: "/etc/hostname",
HostPath: filepath.Join(testRootDir, sandboxesDir, testSandboxID, "hostname"),
Readonly: false,
ContainerPath: "/etc/hostname",
HostPath: filepath.Join(testRootDir, sandboxesDir, testSandboxID, "hostname"),
Readonly: false,
SelinuxRelabel: true,
},
{
ContainerPath: "/etc/hosts",
HostPath: filepath.Join(testRootDir, sandboxesDir, testSandboxID, "hosts"),
Readonly: false,
ContainerPath: "/etc/hosts",
HostPath: filepath.Join(testRootDir, sandboxesDir, testSandboxID, "hosts"),
Readonly: false,
SelinuxRelabel: true,
},
{
ContainerPath: resolvConfPath,
HostPath: filepath.Join(testRootDir, sandboxesDir, testSandboxID, "resolv.conf"),
Readonly: false,
ContainerPath: resolvConfPath,
HostPath: filepath.Join(testRootDir, sandboxesDir, testSandboxID, "resolv.conf"),
Readonly: false,
SelinuxRelabel: true,
},
{
ContainerPath: "/dev/shm",
@@ -557,14 +566,16 @@ func TestContainerMounts(t *testing.T) {
securityContext: &runtime.LinuxContainerSecurityContext{},
expectedMounts: []*runtime.Mount{
{
ContainerPath: "/etc/hosts",
HostPath: filepath.Join(testRootDir, sandboxesDir, testSandboxID, "hosts"),
Readonly: false,
ContainerPath: "/etc/hosts",
HostPath: filepath.Join(testRootDir, sandboxesDir, testSandboxID, "hosts"),
Readonly: false,
SelinuxRelabel: true,
},
{
ContainerPath: resolvConfPath,
HostPath: filepath.Join(testRootDir, sandboxesDir, testSandboxID, "resolv.conf"),
Readonly: false,
ContainerPath: resolvConfPath,
HostPath: filepath.Join(testRootDir, sandboxesDir, testSandboxID, "resolv.conf"),
Readonly: false,
SelinuxRelabel: true,
},
{
ContainerPath: "/dev/shm",