Source file src/internal/poll/fd_posix.go

     1	// Copyright 2009 The Go Authors. All rights reserved.
     2	// Use of this source code is governed by a BSD-style
     3	// license that can be found in the LICENSE file.
     4	
     5	// +build aix darwin dragonfly freebsd js,wasm linux nacl netbsd openbsd solaris windows
     6	
     7	package poll
     8	
     9	import (
    10		"io"
    11		"syscall"
    12	)
    13	
    14	// eofError returns io.EOF when fd is available for reading end of
    15	// file.
    16	func (fd *FD) eofError(n int, err error) error {
    17		if n == 0 && err == nil && fd.ZeroReadIsEOF {
    18			return io.EOF
    19		}
    20		return err
    21	}
    22	
    23	// Fchmod wraps syscall.Fchmod.
    24	func (fd *FD) Fchmod(mode uint32) error {
    25		if err := fd.incref(); err != nil {
    26			return err
    27		}
    28		defer fd.decref()
    29		return syscall.Fchmod(fd.Sysfd, mode)
    30	}
    31	
    32	// Fchown wraps syscall.Fchown.
    33	func (fd *FD) Fchown(uid, gid int) error {
    34		if err := fd.incref(); err != nil {
    35			return err
    36		}
    37		defer fd.decref()
    38		return syscall.Fchown(fd.Sysfd, uid, gid)
    39	}
    40	
    41	// Ftruncate wraps syscall.Ftruncate.
    42	func (fd *FD) Ftruncate(size int64) error {
    43		if err := fd.incref(); err != nil {
    44			return err
    45		}
    46		defer fd.decref()
    47		return syscall.Ftruncate(fd.Sysfd, size)
    48	}
    49	

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