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Linux set interface underlying fd to non-blocking

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This commit is contained in:
LE Manh Cuong 2018-11-09 09:30:00 +07:00 • committed by Song Gao
parent 8c63d7a3c7
commit 4d58427608
2 changed files with 47 additions and 2 deletions
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15
syscalls_linux.go
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@ -31,7 +31,7 @@ func ioctl(fd uintptr, request uintptr, argp uintptr) error {
}
func newTAP(config Config) (ifce *Interface, err error) {
file, err := os.OpenFile("/dev/net/tun", os.O_RDWR, 0)
file, err := openTun()
if err != nil {
return nil, err
}
@ -55,7 +55,7 @@ func newTAP(config Config) (ifce *Interface, err error) {
}
func newTUN(config Config) (ifce *Interface, err error) {
file, err := os.OpenFile("/dev/net/tun", os.O_RDWR, 0)
file, err := openTun()
if err != nil {
return nil, err
}
@ -107,5 +107,16 @@ func setDeviceOptions(fd uintptr, config Config) (err error) {
if config.Persist {
value = 1
}
return ioctl(fd, syscall.TUNSETPERSIST, uintptr(value))
}
func openTun() (*os.File, error) {
tunFile := "/dev/net/tun"
bfile, err := os.OpenFile(tunFile, os.O_RDWR, 0)
if err != nil {
return nil, err
}
return os.NewFile(bfile.Fd(), tunFile), nil
}