Hi,
A little bug was introduced a few months ago that prevent
reading ESSID with 32 character. Philippe Teuwen was the first one to
report that, followed by the MadWifi team :
http://madwifi.org/ticket/930
The patch fix this bug by removing obsolete code. It also
reenable setting the full range of ESSID, including ESSID with a final
NUL which are valid. This was tested on 2.6.21 and 2.6.22.
John : would you mind pushing that to 2.6.23 ? If you are
happy with it, I can provide backport patches for earlier kernels.
Thanks...
Jean
Signed-off-by: Jean Tourrilhes <[EMAIL PROTECTED]>
-----------------------------------------------------------
--- linux/net/wireless/wext.j1.c 2007-07-09 13:19:22.000000000 -0700
+++ linux/net/wireless/wext.c 2007-07-09 13:19:59.000000000 -0700
@@ -741,39 +741,11 @@ static int ioctl_standard_call(struct ne
int extra_size;
int user_length = 0;
int err;
- int essid_compat = 0;
/* Calculate space needed by arguments. Always allocate
* for max space. Easier, and won't last long... */
extra_size = descr->max_tokens * descr->token_size;
- /* Check need for ESSID compatibility for WE < 21 */
- switch (cmd) {
- case SIOCSIWESSID:
- case SIOCGIWESSID:
- case SIOCSIWNICKN:
- case SIOCGIWNICKN:
- if (iwr->u.data.length == descr->max_tokens + 1)
- essid_compat = 1;
- else if (IW_IS_SET(cmd) && (iwr->u.data.length != 0)) {
- char essid[IW_ESSID_MAX_SIZE + 1];
-
- err = copy_from_user(essid, iwr->u.data.pointer,
- iwr->u.data.length *
- descr->token_size);
- if (err)
- return -EFAULT;
-
- if (essid[iwr->u.data.length - 1] == '\0')
- essid_compat = 1;
- }
- break;
- default:
- break;
- }
-
- iwr->u.data.length -= essid_compat;
-
/* Check what user space is giving us */
if (IW_IS_SET(cmd)) {
/* Check NULL pointer */
@@ -811,7 +783,6 @@ static int ioctl_standard_call(struct ne
}
/* Create the kernel buffer */
- /* kzalloc ensures NULL-termination for essid_compat */
extra = kzalloc(extra_size, GFP_KERNEL);
if (extra == NULL)
return -ENOMEM;
@@ -830,8 +801,6 @@ static int ioctl_standard_call(struct ne
/* Call the handler */
ret = handler(dev, &info, &(iwr->u), extra);
- iwr->u.data.length += essid_compat;
-
/* If we have something to return to the user */
if (!ret && IW_IS_GET(cmd)) {
/* Check if there is enough buffer up there */
-
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