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isdn: fix strlen() usage

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There was a missing "else" statement so the original code overflowed if
->master->name was too long.  Also the ->slave and ->master buffers can
hold names with 9 characters and a NULL so I cleaned it up to allow
another character.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Dan Carpenter 2010-07-10 04:31:11 +00:00 committed by David S. Miller
parent 5c4bfa17f3
commit 84ce981a07
1 changed files with 4 additions and 3 deletions
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7
drivers/isdn/i4l/isdn_net.c
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@ -2924,16 +2924,17 @@ isdn_net_getcfg(isdn_net_ioctl_cfg * cfg)
cfg->dialtimeout = lp->dialtimeout >= 0 ? lp->dialtimeout / HZ : -1;
cfg->dialwait = lp->dialwait / HZ;
if (lp->slave) {
if (strlen(lp->slave->name) > 8)
if (strlen(lp->slave->name) >= 10)
strcpy(cfg->slave, "too-long");
else
strcpy(cfg->slave, lp->slave->name);
} else
cfg->slave[0] = '\0';
if (lp->master) {
if (strlen(lp->master->name) > 8)
if (strlen(lp->master->name) >= 10)
strcpy(cfg->master, "too-long");
strcpy(cfg->master, lp->master->name);
else
strcpy(cfg->master, lp->master->name);
} else
cfg->master[0] = '\0';
return 0;