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//go:build darwin
package fuse
import (
"syscall"
"unsafe"
)
// Sendfile support for macOS
func sendfileTransfer(outFd int, inFd int, offset *int64, count int) (int, error) {
// macOS sendfile has different signature: sendfile(in_fd, out_fd, offset, len, hdtr, flags)
var off int64
if offset != nil {
off = *offset
}
length := int64(count)
_, _, errno := syscall.Syscall6(syscall.SYS_SENDFILE,
uintptr(inFd), // input fd
uintptr(outFd), // output fd
uintptr(off), // offset
uintptr(unsafe.Pointer(&length)), // length (in/out parameter)
0, // hdtr (headers/trailers)
0) // flags
if errno != 0 {
return 0, errno
}
// Update offset if provided
if offset != nil {
*offset += length
}
return int(length), nil
}
func isSendfileSupported() bool {
return true
}
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