| // 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) |
