diff options
Diffstat (limited to 'vendor/golang.org/x/sys/unix/syscall_darwin.go')
| -rw-r--r-- | vendor/golang.org/x/sys/unix/syscall_darwin.go | 55 |
1 files changed, 54 insertions, 1 deletions
diff --git a/vendor/golang.org/x/sys/unix/syscall_darwin.go b/vendor/golang.org/x/sys/unix/syscall_darwin.go index 5b0e831f2..b62573890 100644 --- a/vendor/golang.org/x/sys/unix/syscall_darwin.go +++ b/vendor/golang.org/x/sys/unix/syscall_darwin.go @@ -31,10 +31,40 @@ type SockaddrDatalink struct { raw RawSockaddrDatalink } +// SockaddrCtl implements the Sockaddr interface for AF_SYSTEM type sockets. +type SockaddrCtl struct { + ID uint32 + Unit uint32 + raw RawSockaddrCtl +} + +func (sa *SockaddrCtl) sockaddr() (unsafe.Pointer, _Socklen, error) { + sa.raw.Sc_len = SizeofSockaddrCtl + sa.raw.Sc_family = AF_SYSTEM + sa.raw.Ss_sysaddr = AF_SYS_CONTROL + sa.raw.Sc_id = sa.ID + sa.raw.Sc_unit = sa.Unit + return unsafe.Pointer(&sa.raw), SizeofSockaddrCtl, nil +} + +func anyToSockaddrGOOS(fd int, rsa *RawSockaddrAny) (Sockaddr, error) { + switch rsa.Addr.Family { + case AF_SYSTEM: + pp := (*RawSockaddrCtl)(unsafe.Pointer(rsa)) + if pp.Ss_sysaddr == AF_SYS_CONTROL { + sa := new(SockaddrCtl) + sa.ID = pp.Sc_id + sa.Unit = pp.Sc_unit + return sa, nil + } + } + return nil, EAFNOSUPPORT +} + // Some external packages rely on SYS___SYSCTL being defined to implement their // own sysctl wrappers. Provide it here, even though direct syscalls are no // longer supported on darwin. -const SYS___SYSCTL = 202 +const SYS___SYSCTL = SYS_SYSCTL // Translate "kern.hostname" to []_C_int{0,1,2,3}. func nametomib(name string) (mib []_C_int, err error) { @@ -264,6 +294,29 @@ func IoctlCtlInfo(fd int, ctlInfo *CtlInfo) error { return err } +// IfreqMTU is struct ifreq used to get or set a network device's MTU. +type IfreqMTU struct { + Name [IFNAMSIZ]byte + MTU int32 +} + +// IoctlGetIfreqMTU performs the SIOCGIFMTU ioctl operation on fd to get the MTU +// of the network device specified by ifname. +func IoctlGetIfreqMTU(fd int, ifname string) (*IfreqMTU, error) { + var ifreq IfreqMTU + copy(ifreq.Name[:], ifname) + err := ioctl(fd, SIOCGIFMTU, uintptr(unsafe.Pointer(&ifreq))) + return &ifreq, err +} + +// IoctlSetIfreqMTU performs the SIOCSIFMTU ioctl operation on fd to set the MTU +// of the network device specified by ifreq.Name. +func IoctlSetIfreqMTU(fd int, ifreq *IfreqMTU) error { + err := ioctl(fd, SIOCSIFMTU, uintptr(unsafe.Pointer(ifreq))) + runtime.KeepAlive(ifreq) + return err +} + //sys sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) = SYS_SYSCTL func Uname(uname *Utsname) error { |