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-rw-r--r--pkg/sentry/platform/kvm/testutil/BUILD2
-rw-r--r--pkg/sentry/platform/kvm/testutil/testutil.go3
-rw-r--r--pkg/sentry/platform/kvm/testutil/testutil_amd64.go3
-rw-r--r--pkg/sentry/platform/kvm/testutil/testutil_arm64.go59
-rw-r--r--pkg/sentry/platform/kvm/testutil/testutil_arm64.s91
-rw-r--r--pkg/sentry/socket/netstack/netstack.go4
6 files changed, 158 insertions, 4 deletions
diff --git a/pkg/sentry/platform/kvm/testutil/BUILD b/pkg/sentry/platform/kvm/testutil/BUILD
index 77a449a8b..b0e45f159 100644
--- a/pkg/sentry/platform/kvm/testutil/BUILD
+++ b/pkg/sentry/platform/kvm/testutil/BUILD
@@ -9,6 +9,8 @@ go_library(
"testutil.go",
"testutil_amd64.go",
"testutil_amd64.s",
+ "testutil_arm64.go",
+ "testutil_arm64.s",
],
importpath = "gvisor.dev/gvisor/pkg/sentry/platform/kvm/testutil",
visibility = ["//pkg/sentry/platform/kvm:__pkg__"],
diff --git a/pkg/sentry/platform/kvm/testutil/testutil.go b/pkg/sentry/platform/kvm/testutil/testutil.go
index 6cf2359a3..5c1efa0fd 100644
--- a/pkg/sentry/platform/kvm/testutil/testutil.go
+++ b/pkg/sentry/platform/kvm/testutil/testutil.go
@@ -41,9 +41,6 @@ func TwiddleRegsFault()
// TwiddleRegsSyscall twiddles registers then executes a syscall.
func TwiddleRegsSyscall()
-// TwiddleSegments reads segments into known registers.
-func TwiddleSegments()
-
// FloatingPointWorks is a floating point test.
//
// It returns true or false.
diff --git a/pkg/sentry/platform/kvm/testutil/testutil_amd64.go b/pkg/sentry/platform/kvm/testutil/testutil_amd64.go
index 203d71528..4c108abbf 100644
--- a/pkg/sentry/platform/kvm/testutil/testutil_amd64.go
+++ b/pkg/sentry/platform/kvm/testutil/testutil_amd64.go
@@ -21,6 +21,9 @@ import (
"syscall"
)
+// TwiddleSegments reads segments into known registers.
+func TwiddleSegments()
+
// SetTestTarget sets the rip appropriately.
func SetTestTarget(regs *syscall.PtraceRegs, fn func()) {
regs.Rip = uint64(reflect.ValueOf(fn).Pointer())
diff --git a/pkg/sentry/platform/kvm/testutil/testutil_arm64.go b/pkg/sentry/platform/kvm/testutil/testutil_arm64.go
new file mode 100644
index 000000000..40b2e4acc
--- /dev/null
+++ b/pkg/sentry/platform/kvm/testutil/testutil_arm64.go
@@ -0,0 +1,59 @@
+// Copyright 2019 The gVisor Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// +build arm64
+
+package testutil
+
+import (
+ "fmt"
+ "reflect"
+ "syscall"
+)
+
+// SetTestTarget sets the rip appropriately.
+func SetTestTarget(regs *syscall.PtraceRegs, fn func()) {
+ regs.Pc = uint64(reflect.ValueOf(fn).Pointer())
+}
+
+// SetTouchTarget sets rax appropriately.
+func SetTouchTarget(regs *syscall.PtraceRegs, target *uintptr) {
+ if target != nil {
+ regs.Regs[8] = uint64(reflect.ValueOf(target).Pointer())
+ } else {
+ regs.Regs[8] = 0
+ }
+}
+
+// RewindSyscall rewinds a syscall RIP.
+func RewindSyscall(regs *syscall.PtraceRegs) {
+ regs.Pc -= 4
+}
+
+// SetTestRegs initializes registers to known values.
+func SetTestRegs(regs *syscall.PtraceRegs) {
+ for i := 0; i <= 30; i++ {
+ regs.Regs[i] = uint64(i) + 1
+ }
+}
+
+// CheckTestRegs checks that registers were twiddled per TwiddleRegs.
+func CheckTestRegs(regs *syscall.PtraceRegs, full bool) (err error) {
+ for i := 0; i <= 30; i++ {
+ if need := ^uint64(i + 1); regs.Regs[i] != need {
+ err = addRegisterMismatch(err, fmt.Sprintf("R%d", i), regs.Regs[i], need)
+ }
+ }
+ return
+}
diff --git a/pkg/sentry/platform/kvm/testutil/testutil_arm64.s b/pkg/sentry/platform/kvm/testutil/testutil_arm64.s
new file mode 100644
index 000000000..2cd28b2d2
--- /dev/null
+++ b/pkg/sentry/platform/kvm/testutil/testutil_arm64.s
@@ -0,0 +1,91 @@
+// Copyright 2019 The gVisor Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// +build arm64
+
+// test_util_arm64.s provides ARM64 test functions.
+
+#include "funcdata.h"
+#include "textflag.h"
+
+#define SYS_GETPID 172
+
+// This function simulates the getpid syscall.
+TEXT ·Getpid(SB),NOSPLIT,$0
+ NO_LOCAL_POINTERS
+ MOVD $SYS_GETPID, R8
+ SVC
+ RET
+
+TEXT ·Touch(SB),NOSPLIT,$0
+start:
+ MOVD 0(R8), R1
+ MOVD $SYS_GETPID, R8 // getpid
+ SVC
+ B start
+
+TEXT ·HaltLoop(SB),NOSPLIT,$0
+start:
+ HLT
+ B start
+
+// This function simulates a loop of syscall.
+TEXT ·SyscallLoop(SB),NOSPLIT,$0
+start:
+ SVC
+ B start
+
+TEXT ·SpinLoop(SB),NOSPLIT,$0
+start:
+ B start
+
+// MVN: bitwise logical NOT
+// This case simulates an application that modified R0-R30.
+#define TWIDDLE_REGS() \
+ MVN R0, R0; \
+ MVN R1, R1; \
+ MVN R2, R2; \
+ MVN R3, R3; \
+ MVN R4, R4; \
+ MVN R5, R5; \
+ MVN R6, R6; \
+ MVN R7, R7; \
+ MVN R8, R8; \
+ MVN R9, R9; \
+ MVN R10, R10; \
+ MVN R11, R11; \
+ MVN R12, R12; \
+ MVN R13, R13; \
+ MVN R14, R14; \
+ MVN R15, R15; \
+ MVN R16, R16; \
+ MVN R17, R17; \
+ MVN R18_PLATFORM, R18_PLATFORM; \
+ MVN R19, R19; \
+ MVN R20, R20; \
+ MVN R21, R21; \
+ MVN R22, R22; \
+ MVN R23, R23; \
+ MVN R24, R24; \
+ MVN R25, R25; \
+ MVN R26, R26; \
+ MVN R27, R27; \
+ MVN g, g; \
+ MVN R29, R29; \
+ MVN R30, R30;
+
+TEXT ·TwiddleRegsSyscall(SB),NOSPLIT,$0
+ TWIDDLE_REGS()
+ SVC
+ RET // never reached
diff --git a/pkg/sentry/socket/netstack/netstack.go b/pkg/sentry/socket/netstack/netstack.go
index b3546471e..e5b15a289 100644
--- a/pkg/sentry/socket/netstack/netstack.go
+++ b/pkg/sentry/socket/netstack/netstack.go
@@ -155,6 +155,7 @@ var Metrics = tcpip.Stats{
ValidSegmentsReceived: mustCreateMetric("/netstack/tcp/valid_segments_received", "Number of TCP segments received that the transport layer successfully parsed."),
InvalidSegmentsReceived: mustCreateMetric("/netstack/tcp/invalid_segments_received", "Number of TCP segments received that the transport layer could not parse."),
SegmentsSent: mustCreateMetric("/netstack/tcp/segments_sent", "Number of TCP segments sent."),
+ SegmentSendErrors: mustCreateMetric("/netstack/tcp/segment_send_errors", "Number of TCP segments failed to be sent."),
ResetsSent: mustCreateMetric("/netstack/tcp/resets_sent", "Number of TCP resets sent."),
ResetsReceived: mustCreateMetric("/netstack/tcp/resets_received", "Number of TCP resets received."),
Retransmits: mustCreateMetric("/netstack/tcp/retransmits", "Number of TCP segments retransmitted."),
@@ -170,7 +171,8 @@ var Metrics = tcpip.Stats{
UnknownPortErrors: mustCreateMetric("/netstack/udp/unknown_port_errors", "Number of incoming UDP datagrams dropped because they did not have a known destination port."),
ReceiveBufferErrors: mustCreateMetric("/netstack/udp/receive_buffer_errors", "Number of incoming UDP datagrams dropped due to the receiving buffer being in an invalid state."),
MalformedPacketsReceived: mustCreateMetric("/netstack/udp/malformed_packets_received", "Number of incoming UDP datagrams dropped due to the UDP header being in a malformed state."),
- PacketsSent: mustCreateMetric("/netstack/udp/packets_sent", "Number of UDP datagrams sent via sendUDP."),
+ PacketsSent: mustCreateMetric("/netstack/udp/packets_sent", "Number of UDP datagrams sent."),
+ PacketSendErrors: mustCreateMetric("/netstack/udp/packet_send_errors", "Number of UDP datagrams failed to be sent."),
},
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-28 05:58:44 +0000