net_tstamp: Add SIOCGHWTSTAMP ioctl to match SIOCSHWTSTAMP
SIOCSHWTSTAMP returns the real configuration to the application
using it, but there is currently no way for any other
application to find out the configuration non-destructively.
Add a new ioctl for this, making it unprivileged.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
diff --git a/net/socket.c b/net/socket.c
index 7a766ab..1a548b7 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -3231,6 +3231,7 @@
case SIOCBONDSLAVEINFOQUERY:
case SIOCBONDINFOQUERY:
case SIOCSHWTSTAMP:
+ case SIOCGHWTSTAMP:
return compat_ifr_data_ioctl(net, cmd, argp);
case FIOSETOWN: