File: dup_fd.go

package info (click to toggle)
golang-github-cloudflare-tableflip 1.2.1~git20200514.4baec98-4
  • links: PTS, VCS
  • area: main
  • in suites: bookworm, forky, sid, trixie
  • size: 196 kB
  • sloc: makefile: 2
file content (17 lines) | stat: -rw-r--r-- 332 bytes parent folder | download | duplicates (2) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
 
// +build !windows

package tableflip

import (
	"fmt"
	"syscall"
)

func dupFd(fd uintptr, name fileName) (*file, error) {
	dupfd, _, errno := syscall.Syscall(syscall.SYS_FCNTL, fd, syscall.F_DUPFD_CLOEXEC, 0)
	if errno != 0 {
		return nil, fmt.Errorf("can't dup fd using fcntl: %s", errno)
	}

	return newFile(dupfd, name), nil
}