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// Copyright 2015 syzkaller project authors. All rights reserved.
// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
// +build linux
package host
import (
"runtime"
"syscall"
"testing"
"github.com/google/syzkaller/prog"
_ "github.com/google/syzkaller/sys"
)
func TestLog(t *testing.T) {
t.Parallel()
target, err := prog.GetTarget("linux", runtime.GOARCH)
if err != nil {
t.Fatal(err)
}
// Dump for manual inspection.
supp, err := DetectSupportedSyscalls(target)
if err != nil {
t.Skipf("skipping: %v", err)
}
t.Logf("unsupported:")
for _, c := range target.Syscalls {
s, ok := supp[c]
if ok && !s {
t.Fatalf("map contains false value")
}
if !s {
t.Logf("\t%v", c.Name)
}
}
trans := target.TransitivelyEnabledCalls(supp)
t.Logf("transitively unsupported:")
for _, c := range target.Syscalls {
s, ok := trans[c]
if ok && !s {
t.Fatalf("map contains false value")
}
if !s && supp[c] {
t.Logf("\t%v", c.Name)
}
}
}
func TestSupportedSyscalls(t *testing.T) {
t.Parallel()
target, err := prog.GetTarget("linux", runtime.GOARCH)
if err != nil {
t.Fatal(err)
}
supp, err := DetectSupportedSyscalls(target)
if err != nil {
t.Skipf("skipping: %v", err)
}
// These are safe to execute with invalid arguments.
safe := []string{
"memfd_create",
"sendfile",
"bpf$MAP_CREATE",
"open",
"openat",
"read",
"write",
"stat",
}
for _, name := range safe {
c := target.SyscallMap[name]
if c == nil {
t.Fatalf("can't find syscall '%v'", name)
}
a := ^uintptr(0) - 4097 // hopefully invalid
_, _, err := syscall.Syscall6(uintptr(c.NR), a, a, a, a, a, a)
if err == 0 {
t.Fatalf("%v did not fail", name)
}
if ok := err != syscall.ENOSYS; ok != supp[c] {
t.Fatalf("syscall %v: perse=%v kallsyms=%v", name, ok, supp[c])
}
}
}
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