Files
sys/unix/fdset.go
billofarrell 71e4cd670f unix: augment support for zos/s390x
This augments sys/unix support for zos/s390x by
adding a small number of syscalls:
Errno2
Err2ad
W_Getmntent_A (pure ascii version of W_Getmntent)
Select

It also makes Mount and Unmount more Linux-like.
A few necessary constants and types are added,
and some tests.

These changes do not affect other platforms in any way.

Fixes golang/go#45838

Change-Id: I5783784a79b6c80a47cca74f3352bc07ea4ca682
Reviewed-on: https://go-review.googlesource.com/c/sys/+/314950
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Emmanuel Odeke <emmanuel@orijtech.com>
2021-05-02 18:08:10 +00:00

31 lines
853 B
Go

// Copyright 2019 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 aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris || zos
// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris zos
package unix
// Set adds fd to the set fds.
func (fds *FdSet) Set(fd int) {
fds.Bits[fd/NFDBITS] |= (1 << (uintptr(fd) % NFDBITS))
}
// Clear removes fd from the set fds.
func (fds *FdSet) Clear(fd int) {
fds.Bits[fd/NFDBITS] &^= (1 << (uintptr(fd) % NFDBITS))
}
// IsSet returns whether fd is in the set fds.
func (fds *FdSet) IsSet(fd int) bool {
return fds.Bits[fd/NFDBITS]&(1<<(uintptr(fd)%NFDBITS)) != 0
}
// Zero clears the set fds.
func (fds *FdSet) Zero() {
for i := range fds.Bits {
fds.Bits[i] = 0
}
}