Lift restrictions on interface names
The kernel has few restrictions.
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
diff --git a/xtables.c b/xtables.c
index 63c5db7..f3baf84 100644
--- a/xtables.c
+++ b/xtables.c
@@ -450,7 +450,7 @@
void xtables_parse_interface(const char *arg, char *vianame,
unsigned char *mask)
{
- int vialen = strlen(arg);
+ unsigned int vialen = strlen(arg);
unsigned int i;
memset(mask, 0, IFNAMSIZ);
@@ -462,7 +462,7 @@
" (%i)", arg, IFNAMSIZ-1);
strcpy(vianame, arg);
- if ((vialen == 0) || (vialen == 1 && vianame[0] == '+'))
+ if (vialen == 0)
memset(mask, 0, IFNAMSIZ);
else if (vianame[vialen - 1] == '+') {
memset(mask, 0xFF, vialen - 1);
@@ -473,12 +473,11 @@
memset(mask, 0xFF, vialen + 1);
memset(mask + vialen + 1, 0, IFNAMSIZ - vialen - 1);
for (i = 0; vianame[i]; i++) {
- if (vianame[i] == ':' ||
- vianame[i] == '!' ||
- vianame[i] == '*') {
+ if (vianame[i] == '/' ||
+ vianame[i] == ' ') {
fprintf(stderr,
"Warning: weird character in interface"
- " `%s' (No aliases, :, ! or *).\n",
+ " `%s' ('/' and ' ' are not allowed by the kernel).\n",
vianame);
break;
}