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-rw-r--r--runsc/boot/filter/config.go15
-rw-r--r--runsc/boot/filter/config_amd64.go40
-rw-r--r--runsc/boot/filter/config_arm64.go25
-rw-r--r--runsc/boot/loader.go5
-rw-r--r--runsc/boot/loader_test.go24
5 files changed, 75 insertions, 34 deletions
diff --git a/runsc/boot/filter/config.go b/runsc/boot/filter/config.go
index 4ed28b5cd..6ac19668f 100644
--- a/runsc/boot/filter/config.go
+++ b/runsc/boot/filter/config.go
@@ -27,19 +27,8 @@ import (
// allowedSyscalls is the set of syscalls executed by the Sentry to the host OS.
var allowedSyscalls = seccomp.SyscallRules{
syscall.SYS_CLOCK_GETTIME: {},
- syscall.SYS_CLONE: []seccomp.Rule{
- {
- seccomp.EqualTo(
- syscall.CLONE_VM |
- syscall.CLONE_FS |
- syscall.CLONE_FILES |
- syscall.CLONE_SIGHAND |
- syscall.CLONE_SYSVSEM |
- syscall.CLONE_THREAD),
- },
- },
- syscall.SYS_CLOSE: {},
- syscall.SYS_DUP: {},
+ syscall.SYS_CLOSE: {},
+ syscall.SYS_DUP: {},
syscall.SYS_DUP3: []seccomp.Rule{
{
seccomp.MatchAny{},
diff --git a/runsc/boot/filter/config_amd64.go b/runsc/boot/filter/config_amd64.go
index 24e13565e..cea5613b8 100644
--- a/runsc/boot/filter/config_amd64.go
+++ b/runsc/boot/filter/config_amd64.go
@@ -24,7 +24,41 @@ import (
)
func init() {
- allowedSyscalls[syscall.SYS_ARCH_PRCTL] = append(allowedSyscalls[syscall.SYS_ARCH_PRCTL],
- seccomp.Rule{seccomp.EqualTo(linux.ARCH_SET_FS)},
- )
+ allowedSyscalls[syscall.SYS_ARCH_PRCTL] = []seccomp.Rule{
+ // TODO(b/168828518): No longer used in Go 1.16+.
+ {seccomp.EqualTo(linux.ARCH_SET_FS)},
+ }
+
+ allowedSyscalls[syscall.SYS_CLONE] = []seccomp.Rule{
+ // parent_tidptr and child_tidptr are always 0 because neither
+ // CLONE_PARENT_SETTID nor CLONE_CHILD_SETTID are used.
+ {
+ seccomp.EqualTo(
+ syscall.CLONE_VM |
+ syscall.CLONE_FS |
+ syscall.CLONE_FILES |
+ syscall.CLONE_SETTLS |
+ syscall.CLONE_SIGHAND |
+ syscall.CLONE_SYSVSEM |
+ syscall.CLONE_THREAD),
+ seccomp.MatchAny{}, // newsp
+ seccomp.EqualTo(0), // parent_tidptr
+ seccomp.EqualTo(0), // child_tidptr
+ seccomp.MatchAny{}, // tls
+ },
+ {
+ // TODO(b/168828518): No longer used in Go 1.16+ (on amd64).
+ seccomp.EqualTo(
+ syscall.CLONE_VM |
+ syscall.CLONE_FS |
+ syscall.CLONE_FILES |
+ syscall.CLONE_SIGHAND |
+ syscall.CLONE_SYSVSEM |
+ syscall.CLONE_THREAD),
+ seccomp.MatchAny{}, // newsp
+ seccomp.EqualTo(0), // parent_tidptr
+ seccomp.EqualTo(0), // child_tidptr
+ seccomp.MatchAny{}, // tls
+ },
+ }
}
diff --git a/runsc/boot/filter/config_arm64.go b/runsc/boot/filter/config_arm64.go
index 7fa9bbda3..37313f97f 100644
--- a/runsc/boot/filter/config_arm64.go
+++ b/runsc/boot/filter/config_arm64.go
@@ -16,6 +16,29 @@
package filter
-// Reserve for future customization.
+import (
+ "syscall"
+
+ "gvisor.dev/gvisor/pkg/seccomp"
+)
+
func init() {
+ allowedSyscalls[syscall.SYS_CLONE] = []seccomp.Rule{
+ {
+ seccomp.EqualTo(
+ syscall.CLONE_VM |
+ syscall.CLONE_FS |
+ syscall.CLONE_FILES |
+ syscall.CLONE_SIGHAND |
+ syscall.CLONE_SYSVSEM |
+ syscall.CLONE_THREAD),
+ seccomp.MatchAny{}, // newsp
+ // These arguments are left uninitialized by the Go
+ // runtime, so they may be anything (and are unused by
+ // the host).
+ seccomp.MatchAny{}, // parent_tidptr
+ seccomp.MatchAny{}, // tls
+ seccomp.MatchAny{}, // child_tidptr
+ },
+ }
}
diff --git a/runsc/boot/loader.go b/runsc/boot/loader.go
index 4940ea96a..d5391f78a 100644
--- a/runsc/boot/loader.go
+++ b/runsc/boot/loader.go
@@ -282,6 +282,7 @@ func New(args Args) (*Loader, error) {
args.NumCPU = runtime.NumCPU()
}
log.Infof("CPUs: %d", args.NumCPU)
+ runtime.GOMAXPROCS(args.NumCPU)
if args.TotalMem > 0 {
// Adjust the total memory returned by the Sentry so that applications that
@@ -1059,8 +1060,8 @@ func newRootNetworkNamespace(conf *config.Config, clock tcpip.Clock, uniqueID st
}
func newEmptySandboxNetworkStack(clock tcpip.Clock, uniqueID stack.UniqueID) (inet.Stack, error) {
- netProtos := []stack.NetworkProtocol{ipv4.NewProtocol(), ipv6.NewProtocol(), arp.NewProtocol()}
- transProtos := []stack.TransportProtocol{tcp.NewProtocol(), udp.NewProtocol(), icmp.NewProtocol4()}
+ netProtos := []stack.NetworkProtocolFactory{ipv4.NewProtocol, ipv6.NewProtocol, arp.NewProtocol}
+ transProtos := []stack.TransportProtocolFactory{tcp.NewProtocol, udp.NewProtocol, icmp.NewProtocol4}
s := netstack.Stack{stack.New(stack.Options{
NetworkProtocols: netProtos,
TransportProtocols: transProtos,
diff --git a/runsc/boot/loader_test.go b/runsc/boot/loader_test.go
index bf9ec5d38..1f49431a2 100644
--- a/runsc/boot/loader_test.go
+++ b/runsc/boot/loader_test.go
@@ -264,7 +264,7 @@ type CreateMountTestcase struct {
expectedPaths []string
}
-func createMountTestcases(vfs2 bool) []*CreateMountTestcase {
+func createMountTestcases() []*CreateMountTestcase {
testCases := []*CreateMountTestcase{
&CreateMountTestcase{
// Only proc.
@@ -409,32 +409,26 @@ func createMountTestcases(vfs2 bool) []*CreateMountTestcase {
Destination: "/proc",
Type: "tmpfs",
},
- // TODO (gvisor.dev/issue/1487): Re-add this case when sysfs supports
- // MkDirAt in VFS2 (and remove the reduntant append).
- // {
- // Destination: "/sys/bar",
- // Type: "tmpfs",
- // },
- //
+ {
+ Destination: "/sys/bar",
+ Type: "tmpfs",
+ },
+
{
Destination: "/tmp/baz",
Type: "tmpfs",
},
},
},
- expectedPaths: []string{"/proc", "/sys" /* "/sys/bar" ,*/, "/tmp", "/tmp/baz"},
+ expectedPaths: []string{"/proc", "/sys", "/sys/bar", "/tmp", "/tmp/baz"},
}
- if !vfs2 {
- vfsCase.spec.Mounts = append(vfsCase.spec.Mounts, specs.Mount{Destination: "/sys/bar", Type: "tmpfs"})
- vfsCase.expectedPaths = append(vfsCase.expectedPaths, "/sys/bar")
- }
return append(testCases, vfsCase)
}
// Test that MountNamespace can be created with various specs.
func TestCreateMountNamespace(t *testing.T) {
- for _, tc := range createMountTestcases(false /* vfs2 */) {
+ for _, tc := range createMountTestcases() {
t.Run(tc.name, func(t *testing.T) {
conf := testConfig()
ctx := contexttest.Context(t)
@@ -471,7 +465,7 @@ func TestCreateMountNamespace(t *testing.T) {
// Test that MountNamespace can be created with various specs.
func TestCreateMountNamespaceVFS2(t *testing.T) {
- for _, tc := range createMountTestcases(true /* vfs2 */) {
+ for _, tc := range createMountTestcases() {
t.Run(tc.name, func(t *testing.T) {
spec := testSpec()
spec.Mounts = tc.spec.Mounts
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-17 09:27:24 +0000