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| author | Alan Cox <alan@redhat.com> | 2008-10-13 11:45:17 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-13 18:51:44 +0200 |
| commit | a7be18d436f0c7007794965e5af29fa1ffff1e05 (patch) | |
| tree | 4675ce7e3a5255108bf1d9c7f4ec4507592d50b7 /drivers/char/applicom.c | |
| parent | tty: Minor tidyups and document fixes for n_tty (diff) | |
| download | linux-a7be18d436f0c7007794965e5af29fa1ffff1e05.tar.xz linux-a7be18d436f0c7007794965e5af29fa1ffff1e05.zip | |
applicom: Fix an unchecked user ioctl range and an error return
Closes bug #11408 by checking the card index range for command 0
Fixes the ioctl to return ENOTTY which is correct for unknown ioctls
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/char/applicom.c')
| -rw-r--r-- | drivers/char/applicom.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/char/applicom.c b/drivers/char/applicom.c index 31d08b641f5b..b899d9182c7d 100644 --- a/drivers/char/applicom.c +++ b/drivers/char/applicom.c @@ -712,8 +712,7 @@ static int ac_ioctl(struct inode *inode, struct file *file, unsigned int cmd, un IndexCard = adgl->num_card-1; - if(cmd != 0 && cmd != 6 && - ((IndexCard >= MAX_BOARD) || !apbs[IndexCard].RamIO)) { + if(cmd != 6 && ((IndexCard >= MAX_BOARD) || !apbs[IndexCard].RamIO)) { static int warncount = 10; if (warncount) { printk( KERN_WARNING "APPLICOM driver IOCTL, bad board number %d\n",(int)IndexCard+1); @@ -832,8 +831,7 @@ static int ac_ioctl(struct inode *inode, struct file *file, unsigned int cmd, un } break; default: - printk(KERN_INFO "APPLICOM driver ioctl, unknown function code %d\n",cmd) ; - ret = -EINVAL; + ret = -ENOTTY; break; } Dummy = readb(apbs[IndexCard].RamIO + VERS); |