| // Copyright 2009 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. |
| |
| // +build darwin dragonfly freebsd js,wasm linux nacl netbsd openbsd solaris windows |
| |
| package poll |
| |
| import ( |
| "io" |
| "syscall" |
| ) |
| |
| // eofError returns io.EOF when fd is available for reading end of |
| // file. |
| func (fd *FD) eofError(n int, err error) error { |
| if n == 0 && err == nil && fd.ZeroReadIsEOF { |
| return io.EOF |
| } |
| return err |
| } |
| |
| // Fchmod wraps syscall.Fchmod. |
| func (fd *FD) Fchmod(mode uint32) error { |
| if err := fd.incref(); err != nil { |
| return err |
| } |
| defer fd.decref() |
| return syscall.Fchmod(fd.Sysfd, mode) |
| } |
| |
| // Fchown wraps syscall.Fchown. |
| func (fd *FD) Fchown(uid, gid int) error { |
| if err := fd.incref(); err != nil { |
| return err |
| } |
| defer fd.decref() |
| return syscall.Fchown(fd.Sysfd, uid, gid) |
| } |
| |
| // Ftruncate wraps syscall.Ftruncate. |
| func (fd *FD) Ftruncate(size int64) error { |
| if err := fd.incref(); err != nil { |
| return err |
| } |
| defer fd.decref() |
| return syscall.Ftruncate(fd.Sysfd, size) |
| } |
| |
| // Fsync wraps syscall.Fsync. |
| func (fd *FD) Fsync() error { |
| if err := fd.incref(); err != nil { |
| return err |
| } |
| defer fd.decref() |
| return syscall.Fsync(fd.Sysfd) |
| } |