diff options
Diffstat (limited to 'vendor/github.com/cilium/ebpf/internal/sys/ptr.go')
-rw-r--r-- | vendor/github.com/cilium/ebpf/internal/sys/ptr.go | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/vendor/github.com/cilium/ebpf/internal/sys/ptr.go b/vendor/github.com/cilium/ebpf/internal/sys/ptr.go new file mode 100644 index 000000000..a22100688 --- /dev/null +++ b/vendor/github.com/cilium/ebpf/internal/sys/ptr.go @@ -0,0 +1,38 @@ +package sys + +import ( + "unsafe" + + "github.com/cilium/ebpf/internal/unix" +) + +// 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])} +} + +// NewSlicePointer creates a 64-bit pointer from a byte slice. +// +// Useful to assign both the pointer and the length in one go. +func NewSlicePointerLen(buf []byte) (Pointer, uint32) { + return NewSlicePointer(buf), uint32(len(buf)) +} + +// NewStringPointer creates a 64-bit pointer from a string. +func NewStringPointer(str string) Pointer { + p, err := unix.BytePtrFromString(str) + if err != nil { + return Pointer{} + } + + return Pointer{ptr: unsafe.Pointer(p)} +} |