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x/sys/unix: added SockaddrCAN struct to allow creation of AF_CAN sockets 

Fixes golang/go#16188

Change-Id: I396ccbf6ce14147bc03ecdf180c2657c22b477b4
Reviewed-on: https://go-review.googlesource.com/33392
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Elliot Morrison-Reed 2016-11-19 16:29:01 +01:00 коммит произвёл Ian Lance Taylor
Родитель b699b70325
Коммит 30237cf4ee
21 изменённых файлов: 279 добавлений и 0 удалений
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2
unix/mkerrors.sh
Просмотреть файл

@ -128,6 +128,7 @@ includes_Linux='
#include <linux/wait.h>
#include <linux/icmpv6.h>
#include <linux/serial.h>
#include <linux/can.h>
#include <net/route.h>
#include <asm/termbits.h>
@ -339,6 +340,7 @@ ccflags="$@"
$2 !~ /^(BPF_TIMEVAL)$/ &&
$2 ~ /^(BPF|DLT)_/ ||
$2 ~ /^CLOCK_/ ||
$2 ~ /^CAN_/ ||
$2 !~ "WMESGLEN" &&
$2 ~ /^W[A-Z0-9]+$/ {printf("\t%s = C.%s\n", $2, $2)}
$2 ~ /^__WCOREFLAG$/ {next}

41
unix/syscall_linux.go
Просмотреть файл

@ -411,6 +411,47 @@ func (sa *SockaddrHCI) sockaddr() (unsafe.Pointer, _Socklen, error) {
return unsafe.Pointer(&sa.raw), SizeofSockaddrHCI, nil
}
// SockaddrCAN implements the Sockaddr interface for AF_CAN type sockets.
// The RxID and TxID fields are used for transport protocol addressing in
// (CAN_TP16, CAN_TP20, CAN_MCNET, and CAN_ISOTP), they can be left with
// zero values for CAN_RAW and CAN_BCM sockets as they have no meaning.
//
// The SockaddrCAN struct must be bound to the socket file descriptor
// using Bind before the CAN socket can be used.
//
// // Read one raw CAN frame
// fd, _ := Socket(AF_CAN, SOCK_RAW, CAN_RAW)
// addr := &SockaddrCAN{Ifindex: index}
// Bind(fd, addr)
// frame := make([]byte, 16)
// Read(fd, frame)
//
// The full SocketCAN documentation can be found in the linux kernel
// archives at: https://www.kernel.org/doc/Documentation/networking/can.txt
type SockaddrCAN struct {
Ifindex int
RxID uint32
TxID uint32
raw RawSockaddrCAN
}
func (sa *SockaddrCAN) sockaddr() (unsafe.Pointer, _Socklen, error) {
if sa.Ifindex < 0 || sa.Ifindex > 0x7fffffff {
return nil, 0, EINVAL
}
sa.raw.Family = AF_CAN
sa.raw.Ifindex = int32(sa.Ifindex)
rx := (*[4]byte)(unsafe.Pointer(&sa.RxID))
for i := 0; i < 4; i++ {
sa.raw.Addr[i] = rx[i]
}
tx := (*[4]byte)(unsafe.Pointer(&sa.TxID))
for i := 0; i < 4; i++ {
sa.raw.Addr[i+4] = tx[i]
}
return unsafe.Pointer(&sa.raw), SizeofSockaddrCAN, nil
}
func anyToSockaddr(rsa *RawSockaddrAny) (Sockaddr, error) {
switch rsa.Addr.Family {
case AF_NETLINK:

4
unix/types_linux.go
Просмотреть файл

@ -58,6 +58,7 @@ package unix
#include <utime.h>
#include <bluetooth/bluetooth.h>
#include <bluetooth/hci.h>
#include <linux/can.h>
#ifdef TCSETS2
// On systems that have "struct termios2" use this as type Termios.
@ -218,6 +219,8 @@ type RawSockaddrNetlink C.struct_sockaddr_nl
type RawSockaddrHCI C.struct_sockaddr_hci
type RawSockaddrCAN C.struct_sockaddr_can
type RawSockaddr C.struct_sockaddr
type RawSockaddrAny C.struct_sockaddr_any
@ -258,6 +261,7 @@ const (
SizeofSockaddrLinklayer = C.sizeof_struct_sockaddr_ll
SizeofSockaddrNetlink = C.sizeof_struct_sockaddr_nl
SizeofSockaddrHCI = C.sizeof_struct_sockaddr_hci
SizeofSockaddrCAN = C.sizeof_struct_sockaddr_can
SizeofLinger = C.sizeof_struct_linger
SizeofIPMreq = C.sizeof_struct_ip_mreq
SizeofIPMreqn = C.sizeof_struct_ip_mreqn

19
unix/zerrors_linux_386.go
Просмотреть файл

@ -190,6 +190,25 @@ const (
BS0 = 0x0
BS1 = 0x2000
BSDLY = 0x2000
CAN_BCM = 0x2
CAN_EFF_FLAG = 0x80000000
CAN_EFF_ID_BITS = 0x1d
CAN_EFF_MASK = 0x1fffffff
CAN_ERR_FLAG = 0x20000000
CAN_ERR_MASK = 0x1fffffff
CAN_INV_FILTER = 0x20000000
CAN_ISOTP = 0x6
CAN_MAX_DLC = 0x8
CAN_MAX_DLEN = 0x8
CAN_MCNET = 0x5
CAN_MTU = 0x10
CAN_NPROTO = 0x7
CAN_RAW = 0x1
CAN_RTR_FLAG = 0x40000000
CAN_SFF_ID_BITS = 0xb
CAN_SFF_MASK = 0x7ff
CAN_TP16 = 0x3
CAN_TP20 = 0x4
CBAUD = 0x100f
CBAUDEX = 0x1000
CFLUSH = 0xf

19
unix/zerrors_linux_amd64.go
Просмотреть файл

@ -190,6 +190,25 @@ const (
BS0 = 0x0
BS1 = 0x2000
BSDLY = 0x2000
CAN_BCM = 0x2
CAN_EFF_FLAG = 0x80000000
CAN_EFF_ID_BITS = 0x1d
CAN_EFF_MASK = 0x1fffffff
CAN_ERR_FLAG = 0x20000000
CAN_ERR_MASK = 0x1fffffff
CAN_INV_FILTER = 0x20000000
CAN_ISOTP = 0x6
CAN_MAX_DLC = 0x8
CAN_MAX_DLEN = 0x8
CAN_MCNET = 0x5
CAN_MTU = 0x10
CAN_NPROTO = 0x7
CAN_RAW = 0x1
CAN_RTR_FLAG = 0x40000000
CAN_SFF_ID_BITS = 0xb
CAN_SFF_MASK = 0x7ff
CAN_TP16 = 0x3
CAN_TP20 = 0x4
CBAUD = 0x100f
CBAUDEX = 0x1000
CFLUSH = 0xf

19
unix/zerrors_linux_arm.go
Просмотреть файл

@ -186,6 +186,25 @@ const (
BS0 = 0x0
BS1 = 0x2000
BSDLY = 0x2000
CAN_BCM = 0x2
CAN_EFF_FLAG = 0x80000000
CAN_EFF_ID_BITS = 0x1d
CAN_EFF_MASK = 0x1fffffff
CAN_ERR_FLAG = 0x20000000
CAN_ERR_MASK = 0x1fffffff
CAN_INV_FILTER = 0x20000000
CAN_ISOTP = 0x6
CAN_MAX_DLC = 0x8
CAN_MAX_DLEN = 0x8
CAN_MCNET = 0x5
CAN_MTU = 0x10
CAN_NPROTO = 0x7
CAN_RAW = 0x1
CAN_RTR_FLAG = 0x40000000
CAN_SFF_ID_BITS = 0xb
CAN_SFF_MASK = 0x7ff
CAN_TP16 = 0x3
CAN_TP20 = 0x4
CBAUD = 0x100f
CBAUDEX = 0x1000
CFLUSH = 0xf

19
unix/zerrors_linux_arm64.go
Просмотреть файл

@ -196,6 +196,25 @@ const (
BS0 = 0x0
BS1 = 0x2000
BSDLY = 0x2000
CAN_BCM = 0x2
CAN_EFF_FLAG = 0x80000000
CAN_EFF_ID_BITS = 0x1d
CAN_EFF_MASK = 0x1fffffff
CAN_ERR_FLAG = 0x20000000
CAN_ERR_MASK = 0x1fffffff
CAN_INV_FILTER = 0x20000000
CAN_ISOTP = 0x6
CAN_MAX_DLC = 0x8
CAN_MAX_DLEN = 0x8
CAN_MCNET = 0x5
CAN_MTU = 0x10
CAN_NPROTO = 0x7
CAN_RAW = 0x1
CAN_RTR_FLAG = 0x40000000
CAN_SFF_ID_BITS = 0xb
CAN_SFF_MASK = 0x7ff
CAN_TP16 = 0x3
CAN_TP20 = 0x4
CBAUD = 0x100f
CBAUDEX = 0x1000
CFLUSH = 0xf

19
unix/zerrors_linux_ppc64.go
Просмотреть файл

@ -197,6 +197,25 @@ const (
BS0 = 0x0
BS1 = 0x8000
BSDLY = 0x8000
CAN_BCM = 0x2
CAN_EFF_FLAG = 0x80000000
CAN_EFF_ID_BITS = 0x1d
CAN_EFF_MASK = 0x1fffffff
CAN_ERR_FLAG = 0x20000000
CAN_ERR_MASK = 0x1fffffff
CAN_INV_FILTER = 0x20000000
CAN_ISOTP = 0x6
CAN_MAX_DLC = 0x8
CAN_MAX_DLEN = 0x8
CAN_MCNET = 0x5
CAN_MTU = 0x10
CAN_NPROTO = 0x7
CAN_RAW = 0x1
CAN_RTR_FLAG = 0x40000000
CAN_SFF_ID_BITS = 0xb
CAN_SFF_MASK = 0x7ff
CAN_TP16 = 0x3
CAN_TP20 = 0x4
CBAUD = 0xff
CBAUDEX = 0x0
CFLUSH = 0xf

19
unix/zerrors_linux_ppc64le.go
Просмотреть файл

@ -196,6 +196,25 @@ const (
BS0 = 0x0
BS1 = 0x8000
BSDLY = 0x8000
CAN_BCM = 0x2
CAN_EFF_FLAG = 0x80000000
CAN_EFF_ID_BITS = 0x1d
CAN_EFF_MASK = 0x1fffffff
CAN_ERR_FLAG = 0x20000000
CAN_ERR_MASK = 0x1fffffff
CAN_INV_FILTER = 0x20000000
CAN_ISOTP = 0x6
CAN_MAX_DLC = 0x8
CAN_MAX_DLEN = 0x8
CAN_MCNET = 0x5
CAN_MTU = 0x10
CAN_NPROTO = 0x7
CAN_RAW = 0x1
CAN_RTR_FLAG = 0x40000000
CAN_SFF_ID_BITS = 0xb
CAN_SFF_MASK = 0x7ff
CAN_TP16 = 0x3
CAN_TP20 = 0x4
CBAUD = 0xff
CBAUDEX = 0x0
CFLUSH = 0xf

19
unix/zerrors_linux_s390x.go
Просмотреть файл

@ -201,6 +201,25 @@ const (
BS0 = 0x0
BS1 = 0x2000
BSDLY = 0x2000
CAN_BCM = 0x2
CAN_EFF_FLAG = 0x80000000
CAN_EFF_ID_BITS = 0x1d
CAN_EFF_MASK = 0x1fffffff
CAN_ERR_FLAG = 0x20000000
CAN_ERR_MASK = 0x1fffffff
CAN_INV_FILTER = 0x20000000
CAN_ISOTP = 0x6
CAN_MAX_DLC = 0x8
CAN_MAX_DLEN = 0x8
CAN_MCNET = 0x5
CAN_MTU = 0x10
CAN_NPROTO = 0x7
CAN_RAW = 0x1
CAN_RTR_FLAG = 0x40000000
CAN_SFF_ID_BITS = 0xb
CAN_SFF_MASK = 0x7ff
CAN_TP16 = 0x3
CAN_TP20 = 0x4
CBAUD = 0x100f
CBAUDEX = 0x1000
CFLUSH = 0xf

19
unix/zerrors_linux_sparc64.go
Просмотреть файл

@ -205,6 +205,25 @@ const (
BS0 = 0x0
BS1 = 0x2000
BSDLY = 0x2000
CAN_BCM = 0x2
CAN_EFF_FLAG = 0x80000000
CAN_EFF_ID_BITS = 0x1d
CAN_EFF_MASK = 0x1fffffff
CAN_ERR_FLAG = 0x20000000
CAN_ERR_MASK = 0x1fffffff
CAN_INV_FILTER = 0x20000000
CAN_ISOTP = 0x6
CAN_MAX_DLC = 0x8
CAN_MAX_DLEN = 0x8
CAN_MCNET = 0x5
CAN_MTU = 0x10
CAN_NPROTO = 0x7
CAN_RAW = 0x1
CAN_RTR_FLAG = 0x40000000
CAN_SFF_ID_BITS = 0xb
CAN_SFF_MASK = 0x7ff
CAN_TP16 = 0x3
CAN_TP20 = 0x4
CBAUD = 0x100f
CBAUDEX = 0x1000
CFLUSH = 0xf

8
unix/ztypes_linux_386.go
Просмотреть файл

@ -203,6 +203,13 @@ type RawSockaddrHCI struct {
Channel uint16
}
type RawSockaddrCAN struct {
Family uint16
Pad_cgo_0 [2]byte
Ifindex int32
Addr [8]byte
}
type RawSockaddr struct {
Family uint16
Data [14]int8
@ -326,6 +333,7 @@ const (
SizeofSockaddrLinklayer = 0x14
SizeofSockaddrNetlink = 0xc
SizeofSockaddrHCI = 0x6
SizeofSockaddrCAN = 0x10
SizeofLinger = 0x8
SizeofIPMreq = 0x8
SizeofIPMreqn = 0xc

8
unix/ztypes_linux_amd64.go
Просмотреть файл

@ -205,6 +205,13 @@ type RawSockaddrHCI struct {
Channel uint16
}
type RawSockaddrCAN struct {
Family uint16
Pad_cgo_0 [2]byte
Ifindex int32
Addr [8]byte
}
type RawSockaddr struct {
Family uint16
Data [14]int8
@ -330,6 +337,7 @@ const (
SizeofSockaddrLinklayer = 0x14
SizeofSockaddrNetlink = 0xc
SizeofSockaddrHCI = 0x6
SizeofSockaddrCAN = 0x10
SizeofLinger = 0x8
SizeofIPMreq = 0x8
SizeofIPMreqn = 0xc

8
unix/ztypes_linux_arm.go
Просмотреть файл

@ -207,6 +207,13 @@ type RawSockaddrHCI struct {
Channel uint16
}
type RawSockaddrCAN struct {
Family uint16
Pad_cgo_0 [2]byte
Ifindex int32
Addr [8]byte
}
type RawSockaddr struct {
Family uint16
Data [14]uint8
@ -330,6 +337,7 @@ const (
SizeofSockaddrLinklayer = 0x14
SizeofSockaddrNetlink = 0xc
SizeofSockaddrHCI = 0x6
SizeofSockaddrCAN = 0x10
SizeofLinger = 0x8
SizeofIPMreq = 0x8
SizeofIPMreqn = 0xc

8
unix/ztypes_linux_arm64.go
Просмотреть файл

@ -206,6 +206,13 @@ type RawSockaddrHCI struct {
Channel uint16
}
type RawSockaddrCAN struct {
Family uint16
Pad_cgo_0 [2]byte
Ifindex int32
Addr [8]byte
}
type RawSockaddr struct {
Family uint16
Data [14]int8
@ -331,6 +338,7 @@ const (
SizeofSockaddrLinklayer = 0x14
SizeofSockaddrNetlink = 0xc
SizeofSockaddrHCI = 0x6
SizeofSockaddrCAN = 0x10
SizeofLinger = 0x8
SizeofIPMreq = 0x8
SizeofIPMreqn = 0xc

8
unix/ztypes_linux_mips64.go
Просмотреть файл

@ -206,6 +206,13 @@ type RawSockaddrHCI struct {
Channel uint16
}
type RawSockaddrCAN struct {
Family uint16
Pad_cgo_0 [2]byte
Ifindex int32
Addr [8]byte
}
type RawSockaddr struct {
Family uint16
Data [14]int8
@ -330,6 +337,7 @@ const (
SizeofSockaddrLinklayer = 0x14
SizeofSockaddrNetlink = 0xc
SizeofSockaddrHCI = 0x6
SizeofSockaddrCAN = 0x10
SizeofLinger = 0x8
SizeofIPMreq = 0x8
SizeofIPMreqn = 0xc

8
unix/ztypes_linux_mips64le.go
Просмотреть файл

@ -206,6 +206,13 @@ type RawSockaddrHCI struct {
Channel uint16
}
type RawSockaddrCAN struct {
Family uint16
Pad_cgo_0 [2]byte
Ifindex int32
Addr [8]byte
}
type RawSockaddr struct {
Family uint16
Data [14]int8
@ -330,6 +337,7 @@ const (
SizeofSockaddrLinklayer = 0x14
SizeofSockaddrNetlink = 0xc
SizeofSockaddrHCI = 0x6
SizeofSockaddrCAN = 0x10
SizeofLinger = 0x8
SizeofIPMreq = 0x8
SizeofIPMreqn = 0xc

8
unix/ztypes_linux_ppc64.go
Просмотреть файл

@ -207,6 +207,13 @@ type RawSockaddrHCI struct {
Channel uint16
}
type RawSockaddrCAN struct {
Family uint16
Pad_cgo_0 [2]byte
Ifindex int32
Addr [8]byte
}
type RawSockaddr struct {
Family uint16
Data [14]uint8
@ -332,6 +339,7 @@ const (
SizeofSockaddrLinklayer = 0x14
SizeofSockaddrNetlink = 0xc
SizeofSockaddrHCI = 0x6
SizeofSockaddrCAN = 0x10
SizeofLinger = 0x8
SizeofIPMreq = 0x8
SizeofIPMreqn = 0xc

8
unix/ztypes_linux_ppc64le.go
Просмотреть файл

@ -207,6 +207,13 @@ type RawSockaddrHCI struct {
Channel uint16
}
type RawSockaddrCAN struct {
Family uint16
Pad_cgo_0 [2]byte
Ifindex int32
Addr [8]byte
}
type RawSockaddr struct {
Family uint16
Data [14]uint8
@ -332,6 +339,7 @@ const (
SizeofSockaddrLinklayer = 0x14
SizeofSockaddrNetlink = 0xc
SizeofSockaddrHCI = 0x6
SizeofSockaddrCAN = 0x10
SizeofLinger = 0x8
SizeofIPMreq = 0x8
SizeofIPMreqn = 0xc

8
unix/ztypes_linux_s390x.go
Просмотреть файл

@ -206,6 +206,13 @@ type RawSockaddrHCI struct {
Channel uint16
}
type RawSockaddrCAN struct {
Family uint16
Pad_cgo_0 [2]byte
Ifindex int32
Addr [8]byte
}
type RawSockaddr struct {
Family uint16
Data [14]int8
@ -330,6 +337,7 @@ const (
SizeofSockaddrLinklayer = 0x14
SizeofSockaddrNetlink = 0xc
SizeofSockaddrHCI = 0x6
SizeofSockaddrCAN = 0x10
SizeofLinger = 0x8
SizeofIPMreq = 0x8
SizeofIPMreqn = 0xc

8
unix/ztypes_linux_sparc64.go
Просмотреть файл

@ -211,6 +211,13 @@ type RawSockaddrHCI struct {
Channel uint16
}
type RawSockaddrCAN struct {
Family uint16
Pad_cgo_0 [2]byte
Ifindex int32
Addr [8]byte
}
type RawSockaddr struct {
Family uint16
Data [14]int8
@ -335,6 +342,7 @@ const (
SizeofSockaddrLinklayer = 0x14
SizeofSockaddrNetlink = 0xc
SizeofSockaddrHCI = 0x6
SizeofSockaddrCAN = 0x10
SizeofLinger = 0x8
SizeofIPMreq = 0x8
SizeofIPMreqn = 0xc