k3s/vendor/github.com/cilium/ebpf/internal/ptr.go

31 lines
665 B
Go

package internal
import "unsafe"
// NewPointer creates a 64-bit pointer from an unsafe Pointer.
func NewPointer(ptr unsafe.Pointer) Pointer {
return Pointer{ptr: ptr}
}
// NewSlicePointer creates a 64-bit pointer from a byte slice.
func NewSlicePointer(buf []byte) Pointer {
if len(buf) == 0 {
return Pointer{}
}
return Pointer{ptr: unsafe.Pointer(&buf[0])}
}
// NewStringPointer creates a 64-bit pointer from a string.
func NewStringPointer(str string) Pointer {
if str == "" {
return Pointer{}
}
// The kernel expects strings to be zero terminated
buf := make([]byte, len(str)+1)
copy(buf, str)
return Pointer{ptr: unsafe.Pointer(&buf[0])}
}