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unix: add SetsockoptCanRawFilter for linux

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Add the SetsockoptCanRawFilter func and CanFilter type to allow kernel
message filtering on AF_CAN sockets.

Fixes golang/go#29638

Change-Id: I4042825527ba2bc9aeb8dbe70d1960a06b15c29e
Reviewed-on: https://go-review.googlesource.com/c/163318
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Tobias Klauser
2019-02-22 07:27:16 +00:00
committed by Tobias Klauser
parent ec7b60b042
commit a9d3bda3a2
15 changed files with 89 additions and 0 deletions
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unix/syscall_linux.go
+8
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@@ -1000,6 +1000,14 @@ func SetsockoptSockFprog(fd, level, opt int, fprog *SockFprog) error {
return setsockopt(fd, level, opt, unsafe.Pointer(fprog), unsafe.Sizeof(*fprog))
}
func SetsockoptCanRawFilter(fd, level, opt int, filter []CanFilter) error {
var p unsafe.Pointer
if len(filter) > 0 {
p = unsafe.Pointer(&filter[0])
}
return setsockopt(fd, level, opt, p, uintptr(len(filter)*SizeofCanFilter))
}
// Keyctl Commands (http://man7.org/linux/man-pages/man2/keyctl.2.html)
// KeyctlInt calls keyctl commands in which each argument is an int.