--- a/vendor/golang.org/x/sys/unix/sockcmsg_unix.go Wed Sep 18 19:17:42 2019 +0200
+++ b/vendor/golang.org/x/sys/unix/sockcmsg_unix.go Sun Feb 16 18:54:01 2020 +0100
@@ -8,19 +8,9 @@
package unix
-import "unsafe"
-
-// Round the length of a raw sockaddr up to align it properly.
-func cmsgAlignOf(salen int) int {
- salign := sizeofPtr
- // NOTE: It seems like 64-bit Darwin, DragonFly BSD and
- // Solaris kernels still require 32-bit aligned access to
- // network subsystem.
- if darwin64Bit || dragonfly64Bit || solaris64Bit {
- salign = 4
- }
- return (salen + salign - 1) & ^(salign - 1)
-}
+import (
+ "unsafe"
+)
// CmsgLen returns the value to store in the Len field of the Cmsghdr
// structure, taking into account any necessary alignment.
@@ -34,8 +24,8 @@
return cmsgAlignOf(SizeofCmsghdr) + cmsgAlignOf(datalen)
}
-func cmsgData(h *Cmsghdr) unsafe.Pointer {
- return unsafe.Pointer(uintptr(unsafe.Pointer(h)) + uintptr(cmsgAlignOf(SizeofCmsghdr)))
+func (h *Cmsghdr) data(offset uintptr) unsafe.Pointer {
+ return unsafe.Pointer(uintptr(unsafe.Pointer(h)) + uintptr(cmsgAlignOf(SizeofCmsghdr)) + offset)
}
// SocketControlMessage represents a socket control message.
@@ -78,10 +68,8 @@
h.Level = SOL_SOCKET
h.Type = SCM_RIGHTS
h.SetLen(CmsgLen(datalen))
- data := cmsgData(h)
- for _, fd := range fds {
- *(*int32)(data) = int32(fd)
- data = unsafe.Pointer(uintptr(data) + 4)
+ for i, fd := range fds {
+ *(*int32)(h.data(4 * uintptr(i))) = int32(fd)
}
return b
}