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-rw-r--r--pkg/sentry/syscalls/linux/sys_read.go23
-rw-r--r--pkg/sentry/syscalls/linux/sys_write.go23
-rw-r--r--test/syscalls/linux/socket_generic.cc59
3 files changed, 96 insertions, 9 deletions
diff --git a/pkg/sentry/syscalls/linux/sys_read.go b/pkg/sentry/syscalls/linux/sys_read.go
index b6df4d9d4..8105e9b43 100644
--- a/pkg/sentry/syscalls/linux/sys_read.go
+++ b/pkg/sentry/syscalls/linux/sys_read.go
@@ -15,11 +15,15 @@
package linux
import (
+ "time"
+
"gvisor.googlesource.com/gvisor/pkg/abi/linux"
"gvisor.googlesource.com/gvisor/pkg/sentry/arch"
"gvisor.googlesource.com/gvisor/pkg/sentry/fs"
"gvisor.googlesource.com/gvisor/pkg/sentry/kernel"
"gvisor.googlesource.com/gvisor/pkg/sentry/kernel/kdefs"
+ ktime "gvisor.googlesource.com/gvisor/pkg/sentry/kernel/time"
+ "gvisor.googlesource.com/gvisor/pkg/sentry/socket"
"gvisor.googlesource.com/gvisor/pkg/sentry/usermem"
"gvisor.googlesource.com/gvisor/pkg/syserror"
"gvisor.googlesource.com/gvisor/pkg/waiter"
@@ -259,6 +263,20 @@ func readv(t *kernel.Task, f *fs.File, dst usermem.IOSequence) (int64, error) {
return n, err
}
+ // Sockets support read timeouts.
+ var haveDeadline bool
+ var deadline ktime.Time
+ if s, ok := f.FileOperations.(socket.Socket); ok {
+ dl := s.RecvTimeout()
+ if dl < 0 && err == syserror.ErrWouldBlock {
+ return n, err
+ }
+ if dl > 0 {
+ deadline = t.Kernel().MonotonicClock().Now().Add(time.Duration(dl) * time.Nanosecond)
+ haveDeadline = true
+ }
+ }
+
// Register for notifications.
w, ch := waiter.NewChannelEntry(nil)
f.EventRegister(&w, EventMaskRead)
@@ -277,7 +295,10 @@ func readv(t *kernel.Task, f *fs.File, dst usermem.IOSequence) (int64, error) {
}
// Wait for a notification that we should retry.
- if err = t.Block(ch); err != nil {
+ if err = t.BlockWithDeadline(ch, haveDeadline, deadline); err != nil {
+ if err == syserror.ETIMEDOUT {
+ err = syserror.ErrWouldBlock
+ }
break
}
}
diff --git a/pkg/sentry/syscalls/linux/sys_write.go b/pkg/sentry/syscalls/linux/sys_write.go
index 750a098cd..a5ad7efb2 100644
--- a/pkg/sentry/syscalls/linux/sys_write.go
+++ b/pkg/sentry/syscalls/linux/sys_write.go
@@ -15,11 +15,15 @@
package linux
import (
+ "time"
+
"gvisor.googlesource.com/gvisor/pkg/abi/linux"
"gvisor.googlesource.com/gvisor/pkg/sentry/arch"
"gvisor.googlesource.com/gvisor/pkg/sentry/fs"
"gvisor.googlesource.com/gvisor/pkg/sentry/kernel"
"gvisor.googlesource.com/gvisor/pkg/sentry/kernel/kdefs"
+ ktime "gvisor.googlesource.com/gvisor/pkg/sentry/kernel/time"
+ "gvisor.googlesource.com/gvisor/pkg/sentry/socket"
"gvisor.googlesource.com/gvisor/pkg/sentry/usermem"
"gvisor.googlesource.com/gvisor/pkg/syserror"
"gvisor.googlesource.com/gvisor/pkg/waiter"
@@ -263,6 +267,20 @@ func writev(t *kernel.Task, f *fs.File, src usermem.IOSequence) (int64, error) {
return n, err
}
+ // Sockets support write timeouts.
+ var haveDeadline bool
+ var deadline ktime.Time
+ if s, ok := f.FileOperations.(socket.Socket); ok {
+ dl := s.SendTimeout()
+ if dl < 0 && err == syserror.ErrWouldBlock {
+ return n, err
+ }
+ if dl > 0 {
+ deadline = t.Kernel().MonotonicClock().Now().Add(time.Duration(dl) * time.Nanosecond)
+ haveDeadline = true
+ }
+ }
+
// Register for notifications.
w, ch := waiter.NewChannelEntry(nil)
f.EventRegister(&w, EventMaskWrite)
@@ -281,7 +299,10 @@ func writev(t *kernel.Task, f *fs.File, src usermem.IOSequence) (int64, error) {
}
// Wait for a notification that we should retry.
- if err = t.Block(ch); err != nil {
+ if err = t.BlockWithDeadline(ch, haveDeadline, deadline); err != nil {
+ if err == syserror.ETIMEDOUT {
+ err = syserror.ErrWouldBlock
+ }
break
}
}
diff --git a/test/syscalls/linux/socket_generic.cc b/test/syscalls/linux/socket_generic.cc
index c65b29112..974c0dd7b 100644
--- a/test/syscalls/linux/socket_generic.cc
+++ b/test/syscalls/linux/socket_generic.cc
@@ -280,7 +280,22 @@ TEST_P(AllSocketPairTest, SndBufSucceeds) {
EXPECT_GT(size, 0);
}
-TEST_P(AllSocketPairTest, RecvTimeoutSucceeds) {
+TEST_P(AllSocketPairTest, RecvTimeoutReadSucceeds) {
+ auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
+
+ struct timeval tv {
+ .tv_sec = 0, .tv_usec = 10
+ };
+ EXPECT_THAT(
+ setsockopt(sockets->first_fd(), SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)),
+ SyscallSucceeds());
+
+ char buf[20] = {};
+ EXPECT_THAT(RetryEINTR(read)(sockets->first_fd(), buf, sizeof(buf)),
+ SyscallFailsWithErrno(EAGAIN));
+}
+
+TEST_P(AllSocketPairTest, RecvTimeoutRecvSucceeds) {
auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
struct timeval tv {
@@ -295,7 +310,7 @@ TEST_P(AllSocketPairTest, RecvTimeoutSucceeds) {
SyscallFailsWithErrno(EAGAIN));
}
-TEST_P(AllSocketPairTest, RecvTimeoutOneSecondSucceeds) {
+TEST_P(AllSocketPairTest, RecvTimeoutRecvOneSecondSucceeds) {
auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
struct timeval tv {
@@ -310,7 +325,7 @@ TEST_P(AllSocketPairTest, RecvTimeoutOneSecondSucceeds) {
SyscallFailsWithErrno(EAGAIN));
}
-TEST_P(AllSocketPairTest, RecvmsgTimeoutSucceeds) {
+TEST_P(AllSocketPairTest, RecvTimeoutRecvmsgSucceeds) {
auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
struct timeval tv {
@@ -332,6 +347,21 @@ TEST_P(AllSocketPairTest, RecvmsgTimeoutSucceeds) {
SyscallFailsWithErrno(EAGAIN));
}
+TEST_P(AllSocketPairTest, SendTimeoutAllowsWrite) {
+ auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
+
+ struct timeval tv {
+ .tv_sec = 0, .tv_usec = 10
+ };
+ EXPECT_THAT(
+ setsockopt(sockets->first_fd(), SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof(tv)),
+ SyscallSucceeds());
+
+ char buf[20] = {};
+ ASSERT_THAT(RetryEINTR(write)(sockets->first_fd(), buf, sizeof(buf)),
+ SyscallSucceedsWithValue(sizeof(buf)));
+}
+
TEST_P(AllSocketPairTest, SendTimeoutAllowsSend) {
auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
@@ -347,7 +377,7 @@ TEST_P(AllSocketPairTest, SendTimeoutAllowsSend) {
SyscallSucceedsWithValue(sizeof(buf)));
}
-TEST_P(AllSocketPairTest, SendmsgTimeoutAllowsSend) {
+TEST_P(AllSocketPairTest, SendTimeoutAllowsSendmsg) {
auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
struct timeval tv {
@@ -389,7 +419,7 @@ TEST_P(AllSocketPairTest, SoRcvTimeoIsSetLargerArg) {
SyscallSucceeds());
}
-TEST_P(AllSocketPairTest, RecvmsgTimeoutOneSecondSucceeds) {
+TEST_P(AllSocketPairTest, RecvTimeoutRecvmsgOneSecondSucceeds) {
auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
struct timeval tv {
@@ -455,7 +485,22 @@ TEST_P(AllSocketPairTest, SendTimeoutUsecNeg) {
SyscallFailsWithErrno(EDOM));
}
-TEST_P(AllSocketPairTest, RecvTimeoutNegSec) {
+TEST_P(AllSocketPairTest, RecvTimeoutNegSecRead) {
+ auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
+
+ struct timeval tv {
+ .tv_sec = -1, .tv_usec = 0
+ };
+ EXPECT_THAT(
+ setsockopt(sockets->first_fd(), SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)),
+ SyscallSucceeds());
+
+ char buf[20] = {};
+ EXPECT_THAT(RetryEINTR(read)(sockets->first_fd(), buf, sizeof(buf)),
+ SyscallFailsWithErrno(EAGAIN));
+}
+
+TEST_P(AllSocketPairTest, RecvTimeoutNegSecRecv) {
auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
struct timeval tv {
@@ -470,7 +515,7 @@ TEST_P(AllSocketPairTest, RecvTimeoutNegSec) {
SyscallFailsWithErrno(EAGAIN));
}
-TEST_P(AllSocketPairTest, RecvmsgTimeoutNegSec) {
+TEST_P(AllSocketPairTest, RecvTimeoutNegSecRecvmsg) {
auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
struct timeval tv {
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-26 05:33:18 +0000