syscall: missing SYS_GETSOCKOPT in zsysnum_linux_386.go #19043
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working as intended because there isn't a getsockopt syscall on linux/386.
Long answer:
linux/386 multiplexes all socket syscalls into a one syscall (probably
because there aren't enough registers to pass the arguments.)
https://golang.org/src/syscall/syscall_linux_386.go#L183
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Thanks a lot for the explanation. In that case, how to implement // Call getorigdst() from linux/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
func getorigdst(fd uintptr) (*syscall.RawSockaddrInet4, error) {
const SO_ORIGINAL_DST = 80 // from linux/include/uapi/linux/netfilter_ipv4.h
raw := syscall.RawSockaddrInet4{}
siz := unsafe.Sizeof(raw)
if _, _, errno := syscall.Syscall6(syscall.SYS_GETSOCKOPT, fd, syscall.IPPROTO_IP, SO_ORIGINAL_DST, uintptr(unsafe.Pointer(&raw)), uintptr(unsafe.Pointer(&siz)), 0); errno != 0 {
return nil, errno
}
return raw, nil
} |
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Questions are best directed to a forum, rather than the issue tracker; see https://golang.org/wiki/Questions. On 386 GNU/Linux you'll need to call something along the lines of |
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Thanks a lot for the pointer! :) |
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Please answer these questions before submitting your issue. Thanks!
What version of Go are you using (
go version)?1.7.5
What operating system and processor architecture are you using (
go env)?Darwin/amd64
What did you do?
If possible, provide a recipe for reproducing the error.
What did you expect to see?
List of defined constants containing SYS_GETSOCKOPT.
What did you see instead?
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