/usr/share/gocode/src/github.com/hanwen/go-fuse/splice/pair.go is in golang-github-hanwen-go-fuse-dev 0.0~git20171124.0.14c3015-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 | // Copyright 2016 the Go-FUSE Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package splice
import (
"fmt"
"syscall"
)
type Pair struct {
r, w int
size int
}
func (p *Pair) MaxGrow() {
for p.Grow(2*p.size) == nil {
}
}
func (p *Pair) Grow(n int) error {
if n <= p.size {
return nil
}
if !resizable {
return fmt.Errorf("splice: want %d bytes, but not resizable", n)
}
if n > maxPipeSize {
return fmt.Errorf("splice: want %d bytes, max pipe size %d", n, maxPipeSize)
}
newsize, errNo := fcntl(uintptr(p.r), F_SETPIPE_SZ, n)
if errNo != 0 {
return fmt.Errorf("splice: fcntl returned %v", errNo)
}
p.size = newsize
return nil
}
func (p *Pair) Cap() int {
return p.size
}
func (p *Pair) Close() error {
err1 := syscall.Close(p.r)
err2 := syscall.Close(p.w)
if err1 != nil {
return err1
}
return err2
}
func (p *Pair) Read(d []byte) (n int, err error) {
return syscall.Read(p.r, d)
}
func (p *Pair) Write(d []byte) (n int, err error) {
return syscall.Write(p.w, d)
}
func (p *Pair) ReadFd() uintptr {
return uintptr(p.r)
}
func (p *Pair) WriteFd() uintptr {
return uintptr(p.w)
}
|