[src/trunk]: src/sys/net support interface name which includes digit.

[knakahara <knakahara%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/7a8786f6e493
branches:  trunk
changeset: 821746:7a8786f6e493
user:      knakahara <knakahara%NetBSD.org@localhost>
date:      Thu Feb 16 08:13:43 2017 +0000

description:
support interface name which includes digit.

diffstat:

 sys/net/if.c |  21 ++++++++++++++++++---
 1 files changed, 18 insertions(+), 3 deletions(-)

diffs (57 lines):

diff -r 3b5021297a73 -r 7a8786f6e493 sys/net/if.c
--- a/sys/net/if.c      Thu Feb 16 08:12:47 2017 +0000
+++ b/sys/net/if.c      Thu Feb 16 08:13:43 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if.c,v 1.378 2017/02/15 01:48:44 ozaki-r Exp $ */
+/*     $NetBSD: if.c,v 1.379 2017/02/16 08:13:43 knakahara Exp $       */
 
 /*-
  * Copyright (c) 1999, 2000, 2001, 2008 The NetBSD Foundation, Inc.
@@ -90,7 +90,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if.c,v 1.378 2017/02/15 01:48:44 ozaki-r Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if.c,v 1.379 2017/02/16 08:13:43 knakahara Exp $");
 
 #if defined(_KERNEL_OPT)
 #include "opt_inet.h"
@@ -188,6 +188,7 @@
 
 static int     if_delroute_matcher(struct rtentry *, void *);
 
+static bool if_is_unit(const char *);
 static struct if_clone *if_clone_lookup(const char *, int *);
 
 static LIST_HEAD(, if_clone) if_cloners = LIST_HEAD_INITIALIZER(if_cloners);
@@ -1594,6 +1595,19 @@
        return (*ifc->ifc_destroy)(ifp);
 }
 
+static bool
+if_is_unit(const char *name)
+{
+
+       while(*name != '\0') {
+               if (*name < '0' || *name > '9')
+                       return false;
+               name++;
+       }
+
+       return true;
+}
+
 /*
  * Look up a network interface cloner.
  */
@@ -1609,8 +1623,9 @@
 
        strcpy(ifname, "if_");
        /* separate interface name from unit */
+       /* TODO: search unit number from backward */
        for (dp = ifname + 3, cp = name; cp - name < IFNAMSIZ &&
-           *cp && (*cp < '0' || *cp > '9');)
+           *cp && !if_is_unit(cp);)
                *dp++ = *cp++;
 
        if (cp == name || cp - name == IFNAMSIZ || !*cp)