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package psx
import (
"runtime"
"syscall"
"testing"
)
func TestSyscall3(t *testing.T) {
want := syscall.Getpid()
if got, _, err := Syscall3(syscall.SYS_GETPID, 0, 0, 0); err != 0 {
t.Errorf("failed to get PID via libpsx: %v", err)
} else if int(got) != want {
t.Errorf("pid mismatch: got=%d want=%d", got, want)
}
if got, _, err := Syscall3(syscall.SYS_CAPGET, 0, 0, 0); err != 14 {
t.Errorf("malformed capget returned %d: %v (want 14: %v)", err, err, syscall.Errno(14))
} else if ^got != 0 {
t.Errorf("malformed capget did not return -1, got=%d", got)
}
}
func TestSyscall6(t *testing.T) {
want := syscall.Getpid()
if got, _, err := Syscall6(syscall.SYS_GETPID, 0, 0, 0, 0, 0, 0); err != 0 {
t.Errorf("failed to get PID via libpsx: %v", err)
} else if int(got) != want {
t.Errorf("pid mismatch: got=%d want=%d", got, want)
}
if got, _, err := Syscall6(syscall.SYS_CAPGET, 0, 0, 0, 0, 0, 0); err != 14 {
t.Errorf("malformed capget errno %d: %v (want 14: %v)", err, err, syscall.Errno(14))
} else if ^got != 0 {
t.Errorf("malformed capget did not return -1, got=%d", got)
}
}
// The man page for errno indicates that it is never set to zero, so
// validate that it retains its value over a successful Syscall[36]()
// and is overwritten on a failing syscall.
func TestErrno(t *testing.T) {
// This testing is much easier if we don't have to guess which
// thread is running this Go code.
runtime.LockOSThread()
defer runtime.UnlockOSThread()
// Start from a known bad state and clean up afterwards.
setErrno(int(syscall.EPERM))
defer setErrno(0)
v3, _, errno := Syscall3(syscall.SYS_GETUID, 0, 0, 0)
if errno != 0 {
t.Fatalf("psx getuid failed: %v", errno)
}
v6, _, errno := Syscall6(syscall.SYS_GETUID, 0, 0, 0, 0, 0, 0)
if errno != 0 {
t.Fatalf("psx getuid failed: %v", errno)
}
if v3 != v6 {
t.Errorf("psx getuid failed to match v3=%d, v6=%d", v3, v6)
}
if v := setErrno(-1); v != int(syscall.EPERM) {
t.Errorf("psx changes prevailing errno got=%v(%d) want=%v", syscall.Errno(v), v, syscall.EPERM)
}
}
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