On Tue, 2017-03-21 at 15:35 +0300, Slawa Olhovchenkov wrote: > On Mon, Mar 20, 2017 at 10:20:17PM +0000, Toomas Soome wrote: > > > > > Author: tsoome > > Date: Mon Mar 20 22:20:17 2017 > > New Revision: 315653 > > URL: https://svnweb.freebsd.org/changeset/base/315653 > > > > Log: > > loader: verify the value from dhcp.interface-mtu and use snprintf > > to set mtu > > > > Since the uset can set dhcp.interface-mtu, we need to try to > > validate the > > value. So we verify if the conversion to int is successful and we > > will not > > allow to set value greater than max IPv4 packet size. > > > > + tmp > USHRT_MAX) { > > + printf("%s: bad value: > > \"%s\", " > > + "ignoring\n", > > + "dhcp.interface-mtu", > > val); > === > USHRT_MAX Maximum value for an object of type unsigned short > int > 65535 (216-1) or greater* > > * the actual value depends on the particular system and library > implementation, but shall reflect the limits of these types in the > target platform. > === > > I mean IF_MAXMTU more correct. >
The context here is libstand; because it is standalone by design, the code doesn't have access to IF_MAXMTU or other kernel/userland constants. There is also no question that a short is 16 bits or that USHRT_MAX will be anything other than 65535 in that environment. If some platform did appear that had a different-sized short by default, we would add whatever flags are necessary to force it back to 16 bits in src/share/mk/bsd.stand.mk. -- Ian _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
