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-rw-r--r--pkg/abi/linux/linux_abi_autogen_unsafe.go26
-rw-r--r--pkg/abi/linux/linux_amd64_abi_autogen_unsafe.go6
-rw-r--r--pkg/abi/linux/linux_arm64_abi_autogen_unsafe.go6
-rw-r--r--pkg/sentry/kernel/seqatomic_taskgoroutineschedinfo_unsafe.go6
-rw-r--r--pkg/sentry/platform/ring0/defs_impl_arm64.go2
-rw-r--r--pkg/sentry/syscalls/linux/vfs2/splice.go22
-rw-r--r--pkg/sentry/time/seqatomic_parameters_unsafe.go6
7 files changed, 40 insertions, 34 deletions
diff --git a/pkg/abi/linux/linux_abi_autogen_unsafe.go b/pkg/abi/linux/linux_abi_autogen_unsafe.go
index f13a88649..8b584fd2a 100644
--- a/pkg/abi/linux/linux_abi_autogen_unsafe.go
+++ b/pkg/abi/linux/linux_abi_autogen_unsafe.go
@@ -155,7 +155,7 @@ func (s *Statx) UnmarshalBytes(src []byte) {
// Packed implements marshal.Marshallable.Packed.
//go:nosplit
func (s *Statx) Packed() bool {
- return s.Atime.Packed() && s.Btime.Packed() && s.Ctime.Packed() && s.Mtime.Packed()
+ return s.Btime.Packed() && s.Ctime.Packed() && s.Mtime.Packed() && s.Atime.Packed()
}
// MarshalUnsafe implements marshal.Marshallable.MarshalUnsafe.
@@ -181,7 +181,7 @@ func (s *Statx) UnmarshalUnsafe(src []byte) {
// CopyOutN implements marshal.Marshallable.CopyOutN.
//go:nosplit
func (s *Statx) CopyOutN(task marshal.Task, addr usermem.Addr, limit int) (int, error) {
- if !s.Atime.Packed() && s.Btime.Packed() && s.Ctime.Packed() && s.Mtime.Packed() {
+ if !s.Ctime.Packed() && s.Mtime.Packed() && s.Atime.Packed() && s.Btime.Packed() {
// Type Statx doesn't have a packed layout in memory, fall back to MarshalBytes.
buf := task.CopyScratchBuffer(s.SizeBytes()) // escapes: okay.
s.MarshalBytes(buf) // escapes: fallback.
@@ -211,7 +211,7 @@ func (s *Statx) CopyOut(task marshal.Task, addr usermem.Addr) (int, error) {
// CopyIn implements marshal.Marshallable.CopyIn.
//go:nosplit
func (s *Statx) CopyIn(task marshal.Task, addr usermem.Addr) (int, error) {
- if !s.Mtime.Packed() && s.Atime.Packed() && s.Btime.Packed() && s.Ctime.Packed() {
+ if !s.Atime.Packed() && s.Btime.Packed() && s.Ctime.Packed() && s.Mtime.Packed() {
// Type Statx doesn't have a packed layout in memory, fall back to UnmarshalBytes.
buf := task.CopyScratchBuffer(s.SizeBytes()) // escapes: okay.
length, err := task.CopyInBytes(addr, buf) // escapes: okay.
@@ -635,7 +635,7 @@ func (f *FUSEHeaderIn) Packed() bool {
// MarshalUnsafe implements marshal.Marshallable.MarshalUnsafe.
func (f *FUSEHeaderIn) MarshalUnsafe(dst []byte) {
- if f.Unique.Packed() && f.Opcode.Packed() {
+ if f.Opcode.Packed() && f.Unique.Packed() {
safecopy.CopyIn(dst, unsafe.Pointer(f))
} else {
// Type FUSEHeaderIn doesn't have a packed layout in memory, fallback to MarshalBytes.
@@ -656,7 +656,7 @@ func (f *FUSEHeaderIn) UnmarshalUnsafe(src []byte) {
// CopyOutN implements marshal.Marshallable.CopyOutN.
//go:nosplit
func (f *FUSEHeaderIn) CopyOutN(task marshal.Task, addr usermem.Addr, limit int) (int, error) {
- if !f.Unique.Packed() && f.Opcode.Packed() {
+ if !f.Opcode.Packed() && f.Unique.Packed() {
// Type FUSEHeaderIn doesn't have a packed layout in memory, fall back to MarshalBytes.
buf := task.CopyScratchBuffer(f.SizeBytes()) // escapes: okay.
f.MarshalBytes(buf) // escapes: fallback.
@@ -712,7 +712,7 @@ func (f *FUSEHeaderIn) CopyIn(task marshal.Task, addr usermem.Addr) (int, error)
// WriteTo implements io.WriterTo.WriteTo.
func (f *FUSEHeaderIn) WriteTo(writer io.Writer) (int64, error) {
- if !f.Opcode.Packed() && f.Unique.Packed() {
+ if !f.Unique.Packed() && f.Opcode.Packed() {
// Type FUSEHeaderIn doesn't have a packed layout in memory, fall back to MarshalBytes.
buf := make([]byte, f.SizeBytes())
f.MarshalBytes(buf)
@@ -2023,7 +2023,7 @@ func (i *IPTEntry) UnmarshalBytes(src []byte) {
// Packed implements marshal.Marshallable.Packed.
//go:nosplit
func (i *IPTEntry) Packed() bool {
- return i.Counters.Packed() && i.IP.Packed()
+ return i.IP.Packed() && i.Counters.Packed()
}
// MarshalUnsafe implements marshal.Marshallable.MarshalUnsafe.
@@ -2237,7 +2237,7 @@ func (i *IPTIP) UnmarshalUnsafe(src []byte) {
// CopyOutN implements marshal.Marshallable.CopyOutN.
//go:nosplit
func (i *IPTIP) CopyOutN(task marshal.Task, addr usermem.Addr, limit int) (int, error) {
- if !i.Src.Packed() && i.Dst.Packed() && i.SrcMask.Packed() && i.DstMask.Packed() {
+ if !i.SrcMask.Packed() && i.DstMask.Packed() && i.Src.Packed() && i.Dst.Packed() {
// Type IPTIP doesn't have a packed layout in memory, fall back to MarshalBytes.
buf := task.CopyScratchBuffer(i.SizeBytes()) // escapes: okay.
i.MarshalBytes(buf) // escapes: fallback.
@@ -2267,7 +2267,7 @@ func (i *IPTIP) CopyOut(task marshal.Task, addr usermem.Addr) (int, error) {
// CopyIn implements marshal.Marshallable.CopyIn.
//go:nosplit
func (i *IPTIP) CopyIn(task marshal.Task, addr usermem.Addr) (int, error) {
- if !i.Src.Packed() && i.Dst.Packed() && i.SrcMask.Packed() && i.DstMask.Packed() {
+ if !i.Dst.Packed() && i.SrcMask.Packed() && i.DstMask.Packed() && i.Src.Packed() {
// Type IPTIP doesn't have a packed layout in memory, fall back to UnmarshalBytes.
buf := task.CopyScratchBuffer(i.SizeBytes()) // escapes: okay.
length, err := task.CopyInBytes(addr, buf) // escapes: okay.
@@ -2293,7 +2293,7 @@ func (i *IPTIP) CopyIn(task marshal.Task, addr usermem.Addr) (int, error) {
// WriteTo implements io.WriterTo.WriteTo.
func (i *IPTIP) WriteTo(writer io.Writer) (int64, error) {
- if !i.SrcMask.Packed() && i.DstMask.Packed() && i.Src.Packed() && i.Dst.Packed() {
+ if !i.Src.Packed() && i.Dst.Packed() && i.SrcMask.Packed() && i.DstMask.Packed() {
// Type IPTIP doesn't have a packed layout in memory, fall back to MarshalBytes.
buf := make([]byte, i.SizeBytes())
i.MarshalBytes(buf)
@@ -3058,7 +3058,7 @@ func (i *IP6TEntry) CopyOut(task marshal.Task, addr usermem.Addr) (int, error) {
// CopyIn implements marshal.Marshallable.CopyIn.
//go:nosplit
func (i *IP6TEntry) CopyIn(task marshal.Task, addr usermem.Addr) (int, error) {
- if !i.IPv6.Packed() && i.Counters.Packed() {
+ if !i.Counters.Packed() && i.IPv6.Packed() {
// Type IP6TEntry doesn't have a packed layout in memory, fall back to UnmarshalBytes.
buf := task.CopyScratchBuffer(i.SizeBytes()) // escapes: okay.
length, err := task.CopyInBytes(addr, buf) // escapes: okay.
@@ -3199,7 +3199,7 @@ func (i *IP6TIP) UnmarshalBytes(src []byte) {
// Packed implements marshal.Marshallable.Packed.
//go:nosplit
func (i *IP6TIP) Packed() bool {
- return i.SrcMask.Packed() && i.DstMask.Packed() && i.Src.Packed() && i.Dst.Packed()
+ return i.Src.Packed() && i.Dst.Packed() && i.SrcMask.Packed() && i.DstMask.Packed()
}
// MarshalUnsafe implements marshal.Marshallable.MarshalUnsafe.
@@ -3255,7 +3255,7 @@ func (i *IP6TIP) CopyOut(task marshal.Task, addr usermem.Addr) (int, error) {
// CopyIn implements marshal.Marshallable.CopyIn.
//go:nosplit
func (i *IP6TIP) CopyIn(task marshal.Task, addr usermem.Addr) (int, error) {
- if !i.SrcMask.Packed() && i.DstMask.Packed() && i.Src.Packed() && i.Dst.Packed() {
+ if !i.Src.Packed() && i.Dst.Packed() && i.SrcMask.Packed() && i.DstMask.Packed() {
// Type IP6TIP doesn't have a packed layout in memory, fall back to UnmarshalBytes.
buf := task.CopyScratchBuffer(i.SizeBytes()) // escapes: okay.
length, err := task.CopyInBytes(addr, buf) // escapes: okay.
diff --git a/pkg/abi/linux/linux_amd64_abi_autogen_unsafe.go b/pkg/abi/linux/linux_amd64_abi_autogen_unsafe.go
index a61fcea18..c49b2aecc 100644
--- a/pkg/abi/linux/linux_amd64_abi_autogen_unsafe.go
+++ b/pkg/abi/linux/linux_amd64_abi_autogen_unsafe.go
@@ -288,7 +288,7 @@ func (s *Stat) UnmarshalBytes(src []byte) {
// Packed implements marshal.Marshallable.Packed.
//go:nosplit
func (s *Stat) Packed() bool {
- return s.MTime.Packed() && s.CTime.Packed() && s.ATime.Packed()
+ return s.ATime.Packed() && s.MTime.Packed() && s.CTime.Packed()
}
// MarshalUnsafe implements marshal.Marshallable.MarshalUnsafe.
@@ -303,7 +303,7 @@ func (s *Stat) MarshalUnsafe(dst []byte) {
// UnmarshalUnsafe implements marshal.Marshallable.UnmarshalUnsafe.
func (s *Stat) UnmarshalUnsafe(src []byte) {
- if s.MTime.Packed() && s.CTime.Packed() && s.ATime.Packed() {
+ if s.CTime.Packed() && s.ATime.Packed() && s.MTime.Packed() {
safecopy.CopyOut(unsafe.Pointer(s), src)
} else {
// Type Stat doesn't have a packed layout in memory, fallback to UnmarshalBytes.
@@ -344,7 +344,7 @@ func (s *Stat) CopyOut(task marshal.Task, addr usermem.Addr) (int, error) {
// CopyIn implements marshal.Marshallable.CopyIn.
//go:nosplit
func (s *Stat) CopyIn(task marshal.Task, addr usermem.Addr) (int, error) {
- if !s.ATime.Packed() && s.MTime.Packed() && s.CTime.Packed() {
+ if !s.MTime.Packed() && s.CTime.Packed() && s.ATime.Packed() {
// Type Stat doesn't have a packed layout in memory, fall back to UnmarshalBytes.
buf := task.CopyScratchBuffer(s.SizeBytes()) // escapes: okay.
length, err := task.CopyInBytes(addr, buf) // escapes: okay.
diff --git a/pkg/abi/linux/linux_arm64_abi_autogen_unsafe.go b/pkg/abi/linux/linux_arm64_abi_autogen_unsafe.go
index b4c8c2de9..932f78be4 100644
--- a/pkg/abi/linux/linux_arm64_abi_autogen_unsafe.go
+++ b/pkg/abi/linux/linux_arm64_abi_autogen_unsafe.go
@@ -300,7 +300,7 @@ func (s *Stat) Packed() bool {
// MarshalUnsafe implements marshal.Marshallable.MarshalUnsafe.
func (s *Stat) MarshalUnsafe(dst []byte) {
- if s.CTime.Packed() && s.ATime.Packed() && s.MTime.Packed() {
+ if s.ATime.Packed() && s.MTime.Packed() && s.CTime.Packed() {
safecopy.CopyIn(dst, unsafe.Pointer(s))
} else {
// Type Stat doesn't have a packed layout in memory, fallback to MarshalBytes.
@@ -321,7 +321,7 @@ func (s *Stat) UnmarshalUnsafe(src []byte) {
// CopyOutN implements marshal.Marshallable.CopyOutN.
//go:nosplit
func (s *Stat) CopyOutN(task marshal.Task, addr usermem.Addr, limit int) (int, error) {
- if !s.CTime.Packed() && s.ATime.Packed() && s.MTime.Packed() {
+ if !s.ATime.Packed() && s.MTime.Packed() && s.CTime.Packed() {
// Type Stat doesn't have a packed layout in memory, fall back to MarshalBytes.
buf := task.CopyScratchBuffer(s.SizeBytes()) // escapes: okay.
s.MarshalBytes(buf) // escapes: fallback.
@@ -377,7 +377,7 @@ func (s *Stat) CopyIn(task marshal.Task, addr usermem.Addr) (int, error) {
// WriteTo implements io.WriterTo.WriteTo.
func (s *Stat) WriteTo(writer io.Writer) (int64, error) {
- if !s.ATime.Packed() && s.MTime.Packed() && s.CTime.Packed() {
+ if !s.MTime.Packed() && s.CTime.Packed() && s.ATime.Packed() {
// Type Stat doesn't have a packed layout in memory, fall back to MarshalBytes.
buf := make([]byte, s.SizeBytes())
s.MarshalBytes(buf)
diff --git a/pkg/sentry/kernel/seqatomic_taskgoroutineschedinfo_unsafe.go b/pkg/sentry/kernel/seqatomic_taskgoroutineschedinfo_unsafe.go
index 90148bbb2..a0f2fe45c 100644
--- a/pkg/sentry/kernel/seqatomic_taskgoroutineschedinfo_unsafe.go
+++ b/pkg/sentry/kernel/seqatomic_taskgoroutineschedinfo_unsafe.go
@@ -1,12 +1,12 @@
package kernel
import (
- "fmt"
- "reflect"
- "strings"
"unsafe"
+ "fmt"
"gvisor.dev/gvisor/pkg/sync"
+ "reflect"
+ "strings"
)
// SeqAtomicLoad returns a copy of *ptr, ensuring that the read does not race
diff --git a/pkg/sentry/platform/ring0/defs_impl_arm64.go b/pkg/sentry/platform/ring0/defs_impl_arm64.go
index 424b66f76..8ebfbfdb6 100644
--- a/pkg/sentry/platform/ring0/defs_impl_arm64.go
+++ b/pkg/sentry/platform/ring0/defs_impl_arm64.go
@@ -1,10 +1,10 @@
package ring0
import (
- "gvisor.dev/gvisor/pkg/sentry/arch"
"gvisor.dev/gvisor/pkg/sentry/platform/ring0/pagetables"
"fmt"
+ "gvisor.dev/gvisor/pkg/sentry/arch"
"gvisor.dev/gvisor/pkg/usermem"
"io"
"reflect"
diff --git a/pkg/sentry/syscalls/linux/vfs2/splice.go b/pkg/sentry/syscalls/linux/vfs2/splice.go
index 68ce94778..5543cfac2 100644
--- a/pkg/sentry/syscalls/linux/vfs2/splice.go
+++ b/pkg/sentry/syscalls/linux/vfs2/splice.go
@@ -18,6 +18,7 @@ import (
"io"
"gvisor.dev/gvisor/pkg/abi/linux"
+ "gvisor.dev/gvisor/pkg/log"
"gvisor.dev/gvisor/pkg/sentry/arch"
"gvisor.dev/gvisor/pkg/sentry/kernel"
"gvisor.dev/gvisor/pkg/sentry/kernel/pipe"
@@ -390,16 +391,21 @@ func Sendfile(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysc
err = dw.waitForOut(t)
}
if err != nil {
- // We didn't complete the write. Only
- // report the bytes that were actually
- // written, and rewind the offset.
+ // We didn't complete the write. Only report the bytes that were actually
+ // written, and rewind offsets as needed.
notWritten := int64(len(wbuf))
n -= notWritten
- if offset != -1 {
- // TODO(gvisor.dev/issue/3779): The inFile offset will be incorrect if we
- // roll back, because it has already been advanced by the full amount.
- // Merely seeking on inFile does not work, because there may be concurrent
- // file operations.
+ if offset == -1 {
+ // We modified the offset of the input file itself during the read
+ // operation. Rewind it.
+ if _, seekErr := inFile.Seek(t, -notWritten, linux.SEEK_CUR); seekErr != nil {
+ // Log the error but don't return it, since the write has already
+ // completed successfully.
+ log.Warningf("failed to roll back input file offset: %v", seekErr)
+ }
+ } else {
+ // The sendfile call was provided an offset parameter that should be
+ // adjusted to reflect the number of bytes sent. Rewind it.
offset -= notWritten
}
break
diff --git a/pkg/sentry/time/seqatomic_parameters_unsafe.go b/pkg/sentry/time/seqatomic_parameters_unsafe.go
index 2cb001080..f18440378 100644
--- a/pkg/sentry/time/seqatomic_parameters_unsafe.go
+++ b/pkg/sentry/time/seqatomic_parameters_unsafe.go
@@ -1,12 +1,12 @@
package time
import (
- "fmt"
- "reflect"
- "strings"
"unsafe"
+ "fmt"
"gvisor.dev/gvisor/pkg/sync"
+ "reflect"
+ "strings"
)
// SeqAtomicLoad returns a copy of *ptr, ensuring that the read does not race
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-18 07:42:54 +0000