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// Copyright 2023 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build wasip1
package unix
import (
"syscall"
_ "unsafe" // for go:linkname
)
func IsNonblock(fd int) (nonblocking bool, err error) {
flags, e1 := fd_fdstat_get_flags(fd)
if e1 != nil {
return false, e1
}
return flags&syscall.FDFLAG_NONBLOCK != 0, nil
}
func HasNonblockFlag(flag int) bool {
return flag&syscall.FDFLAG_NONBLOCK != 0
}
// This helper is implemented in the syscall package. It means we don't have
// to redefine the fd_fdstat_get host import or the fdstat struct it
// populates.
//
//go:linkname fd_fdstat_get_flags syscall.fd_fdstat_get_flags
func fd_fdstat_get_flags(fd int) (uint32, error)
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