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-rw-r--r--pkg/sentry/kernel/rseq.go2
-rw-r--r--pkg/sentry/syscalls/linux/sys_stat.go6
-rw-r--r--tools/go_marshal/gomarshal/generator_interfaces.go21
-rw-r--r--tools/go_marshal/gomarshal/generator_tests.go2
-rw-r--r--tools/go_marshal/marshal/marshal.go4
5 files changed, 17 insertions, 18 deletions
diff --git a/pkg/sentry/kernel/rseq.go b/pkg/sentry/kernel/rseq.go
index 18416643b..ded95f532 100644
--- a/pkg/sentry/kernel/rseq.go
+++ b/pkg/sentry/kernel/rseq.go
@@ -304,7 +304,7 @@ func (t *Task) rseqAddrInterrupt() {
}
var cs linux.RSeqCriticalSection
- if _, err := cs.CopyIn(t, critAddr); err != nil {
+ if err := cs.CopyIn(t, critAddr); err != nil {
t.Debugf("Failed to copy critical section from %#x for rseq: %v", critAddr, err)
t.forceSignal(linux.SIGSEGV, false /* unconditional */)
t.SendSignal(SignalInfoPriv(linux.SIGSEGV))
diff --git a/pkg/sentry/syscalls/linux/sys_stat.go b/pkg/sentry/syscalls/linux/sys_stat.go
index 8b66a9006..11f25e00d 100644
--- a/pkg/sentry/syscalls/linux/sys_stat.go
+++ b/pkg/sentry/syscalls/linux/sys_stat.go
@@ -131,8 +131,7 @@ func stat(t *kernel.Task, d *fs.Dirent, dirPath bool, statAddr usermem.Addr) err
return err
}
s := statFromAttrs(t, d.Inode.StableAttr, uattr)
- _, err = s.CopyOut(t, statAddr)
- return err
+ return s.CopyOut(t, statAddr)
}
// fstat implements fstat for the given *fs.File.
@@ -142,8 +141,7 @@ func fstat(t *kernel.Task, f *fs.File, statAddr usermem.Addr) error {
return err
}
s := statFromAttrs(t, f.Dirent.Inode.StableAttr, uattr)
- _, err = s.CopyOut(t, statAddr)
- return err
+ return s.CopyOut(t, statAddr)
}
// Statx implements linux syscall statx(2).
diff --git a/tools/go_marshal/gomarshal/generator_interfaces.go b/tools/go_marshal/gomarshal/generator_interfaces.go
index 3aa299ccd..834c58cee 100644
--- a/tools/go_marshal/gomarshal/generator_interfaces.go
+++ b/tools/go_marshal/gomarshal/generator_interfaces.go
@@ -507,13 +507,14 @@ func (g *interfaceGenerator) emitMarshallable() {
g.emit("// CopyOut implements marshal.Marshallable.CopyOut.\n")
g.recordUsedImport("marshal")
g.recordUsedImport("usermem")
- g.emit("func (%s *%s) CopyOut(task marshal.Task, addr usermem.Addr) (int, error) {\n", g.r, g.typeName())
+ g.emit("func (%s *%s) CopyOut(task marshal.Task, addr usermem.Addr) error {\n", g.r, g.typeName())
g.inIndent(func() {
fallback := func() {
g.emit("// Type %s doesn't have a packed layout in memory, fall back to MarshalBytes.\n", g.typeName())
g.emit("buf := task.CopyScratchBuffer(%s.SizeBytes())\n", g.r)
g.emit("%s.MarshalBytes(buf)\n", g.r)
- g.emit("return task.CopyOutBytes(addr, buf)\n")
+ g.emit("_, err := task.CopyOutBytes(addr, buf)\n")
+ g.emit("return err\n")
}
if thisPacked {
g.recordUsedImport("reflect")
@@ -539,11 +540,11 @@ func (g *interfaceGenerator) emitMarshallable() {
g.emit("hdr.Len = %s.SizeBytes()\n", g.r)
g.emit("hdr.Cap = %s.SizeBytes()\n\n", g.r)
- g.emit("len, err := task.CopyOutBytes(addr, buf)\n")
+ g.emit("_, err := task.CopyOutBytes(addr, buf)\n")
g.emit("// Since we bypassed the compiler's escape analysis, indicate that %s\n", g.r)
g.emit("// must live until after the CopyOutBytes.\n")
g.emit("runtime.KeepAlive(%s)\n", g.r)
- g.emit("return len, err\n")
+ g.emit("return err\n")
} else {
fallback()
}
@@ -553,20 +554,20 @@ func (g *interfaceGenerator) emitMarshallable() {
g.emit("// CopyIn implements marshal.Marshallable.CopyIn.\n")
g.recordUsedImport("marshal")
g.recordUsedImport("usermem")
- g.emit("func (%s *%s) CopyIn(task marshal.Task, addr usermem.Addr) (int, error) {\n", g.r, g.typeName())
+ g.emit("func (%s *%s) CopyIn(task marshal.Task, addr usermem.Addr) error {\n", g.r, g.typeName())
g.inIndent(func() {
fallback := func() {
g.emit("// Type %s doesn't have a packed layout in memory, fall back to UnmarshalBytes.\n", g.typeName())
g.emit("buf := task.CopyScratchBuffer(%s.SizeBytes())\n", g.r)
- g.emit("n, err := task.CopyInBytes(addr, buf)\n")
+ g.emit("_, err := task.CopyInBytes(addr, buf)\n")
g.emit("if err != nil {\n")
g.inIndent(func() {
- g.emit("return n, err\n")
+ g.emit("return err\n")
})
g.emit("}\n")
g.emit("%s.UnmarshalBytes(buf)\n", g.r)
- g.emit("return n, nil\n")
+ g.emit("return nil\n")
}
if thisPacked {
g.recordUsedImport("reflect")
@@ -592,11 +593,11 @@ func (g *interfaceGenerator) emitMarshallable() {
g.emit("hdr.Len = %s.SizeBytes()\n", g.r)
g.emit("hdr.Cap = %s.SizeBytes()\n\n", g.r)
- g.emit("len, err := task.CopyInBytes(addr, buf)\n")
+ g.emit("_, err := task.CopyInBytes(addr, buf)\n")
g.emit("// Since we bypassed the compiler's escape analysis, indicate that %s\n", g.r)
g.emit("// must live until after the CopyInBytes.\n")
g.emit("runtime.KeepAlive(%s)\n", g.r)
- g.emit("return len, err\n")
+ g.emit("return err\n")
} else {
fallback()
}
diff --git a/tools/go_marshal/gomarshal/generator_tests.go b/tools/go_marshal/gomarshal/generator_tests.go
index 8c28b00d0..2326e7a07 100644
--- a/tools/go_marshal/gomarshal/generator_tests.go
+++ b/tools/go_marshal/gomarshal/generator_tests.go
@@ -92,7 +92,7 @@ func (g *testGenerator) emitTestNonZeroSize() {
g.emit("x := &%s{}\n", g.typeName())
g.emit("if x.SizeBytes() == 0 {\n")
g.inIndent(func() {
- g.emit("t.Fatal(\"Marshallable.Size() should not return zero\")\n")
+ g.emit("t.Fatal(\"Marshallable.SizeBytes() should not return zero\")\n")
})
g.emit("}\n")
})
diff --git a/tools/go_marshal/marshal/marshal.go b/tools/go_marshal/marshal/marshal.go
index 20353850d..f129788e0 100644
--- a/tools/go_marshal/marshal/marshal.go
+++ b/tools/go_marshal/marshal/marshal.go
@@ -91,12 +91,12 @@ type Marshallable interface {
// marshalled does not escape. The implementation should avoid creating
// extra copies in memory by directly deserializing to the object's
// underlying memory.
- CopyIn(task Task, addr usermem.Addr) (int, error)
+ CopyIn(task Task, addr usermem.Addr) error
// CopyOut serializes a Marshallable type to a task's memory. This may only
// be called from a task goroutine. This is more efficient than calling
// MarshalUnsafe on Marshallable.Packed types, as the type being serialized
// does not escape. The implementation should avoid creating extra copies in
// memory by directly serializing from the object's underlying memory.
- CopyOut(task Task, addr usermem.Addr) (int, error)
+ CopyOut(task Task, addr usermem.Addr) error
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-27 03:54:52 +0000