[PATCH] s390: qeth driver fixes [2/6]
[PATCH 5/9] s390: qeth driver fixes [2/6]
From: Frank Pavlic <fpavlic@de.ibm.com>
- fixed error handling in create_device_attributes
- fixed some minor bugs in IPv4
and IPv6 address checking
Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/s390/net/qeth.h b/drivers/s390/net/qeth.h
index 619f4a0..e8bd8c5 100644
--- a/drivers/s390/net/qeth.h
+++ b/drivers/s390/net/qeth.h
@@ -1096,10 +1096,11 @@
{
int count = 0, rc = 0;
int in[4];
+ char c;
- rc = sscanf(buf, "%d.%d.%d.%d%n",
- &in[0], &in[1], &in[2], &in[3], &count);
- if (rc != 4 || count<=0)
+ rc = sscanf(buf, "%u.%u.%u.%u%c",
+ &in[0], &in[1], &in[2], &in[3], &c);
+ if (rc != 4 && (rc != 5 || c != '\n'))
return -EINVAL;
for (count = 0; count < 4; count++) {
if (in[count] > 255)
@@ -1123,24 +1124,28 @@
static inline int
qeth_string_to_ipaddr6(const char *buf, __u8 *addr)
{
- char *end, *start;
+ const char *end, *end_tmp, *start;
__u16 *in;
char num[5];
int num2, cnt, out, found, save_cnt;
unsigned short in_tmp[8] = {0, };
cnt = out = found = save_cnt = num2 = 0;
- end = start = (char *) buf;
+ end = start = buf;
in = (__u16 *) addr;
memset(in, 0, 16);
- while (end) {
- end = strchr(end,':');
+ while (*end) {
+ end = strchr(start,':');
if (end == NULL) {
- end = (char *)buf + (strlen(buf));
- out = 1;
+ end = buf + strlen(buf);
+ if ((end_tmp = strchr(start, '\n')) != NULL)
+ end = end_tmp;
+ out = 1;
}
if ((end - start)) {
memset(num, 0, 5);
+ if ((end - start) > 4)
+ return -EINVAL;
memcpy(num, start, end - start);
if (!qeth_isxdigit(num))
return -EINVAL;
@@ -1158,6 +1163,8 @@
}
start = ++end;
}
+ if (cnt + save_cnt > 8)
+ return -EINVAL;
cnt = 7;
while (save_cnt)
in[cnt--] = in_tmp[--save_cnt];
diff --git a/drivers/s390/net/qeth_sys.c b/drivers/s390/net/qeth_sys.c
index 001497b..c1f3187 100644
--- a/drivers/s390/net/qeth_sys.c
+++ b/drivers/s390/net/qeth_sys.c
@@ -1110,12 +1110,12 @@
{
const char *start, *end;
char *tmp;
- char buffer[49] = {0, };
+ char buffer[40] = {0, };
start = buf;
/* get address string */
end = strchr(start, '/');
- if (!end || (end-start >= 49)){
+ if (!end || (end - start >= 40)){
PRINT_WARN("Invalid format for ipato_addx/delx. "
"Use <ip addr>/<mask bits>\n");
return -EINVAL;
@@ -1127,7 +1127,12 @@
}
start = end + 1;
*mask_bits = simple_strtoul(start, &tmp, 10);
-
+ if (!strlen(start) ||
+ (tmp == start) ||
+ (*mask_bits > ((proto == QETH_PROT_IPV4) ? 32 : 128))) {
+ PRINT_WARN("Invalid mask bits for ipato_addx/delx !\n");
+ return -EINVAL;
+ }
return 0;
}
@@ -1698,11 +1703,16 @@
sysfs_remove_group(&dev->kobj, &qeth_device_attr_group);
sysfs_remove_group(&dev->kobj, &qeth_device_ipato_group);
sysfs_remove_group(&dev->kobj, &qeth_device_vipa_group);
- }
- if ((ret = sysfs_create_group(&dev->kobj, &qeth_device_blkt_group)))
return ret;
-
- return ret;
+ }
+ if ((ret = sysfs_create_group(&dev->kobj, &qeth_device_blkt_group))){
+ sysfs_remove_group(&dev->kobj, &qeth_device_attr_group);
+ sysfs_remove_group(&dev->kobj, &qeth_device_ipato_group);
+ sysfs_remove_group(&dev->kobj, &qeth_device_vipa_group);
+ sysfs_remove_group(&dev->kobj, &qeth_device_rxip_group);
+ return ret;
+ }
+ return 0;
}
void