Hello,
This question is related to a simple driver implementing a miscellaneous device
under 2-6-32
Using the following code:
/* snippet -------------------------------------------------------
static struct miscdevice lab1_dev = {
.minor = MISC_DYNAMIC_MINOR,
.name = "lab1",
.fops = &lab1_fops,
.mode = 0666
};
static int __init lab1_init(void)
{
int rc ;
rc = misc_register ( &lab1_dev ) ;
if ( 0 != rc ) {
printk(KERN_ERR "LAB1 driver: misc_register failed.\n") ;
return rc ;
}
----------------------------------------------- end snippet */
The device is created as:
> ls -l /dev/lab1
crw-rw---- 1 root root 10, 54 2010-08-13 11:56 /dev/lab1
The mode = 0666 is not taken into account. Is this the expected behavior ?
If yes how can I change afterward (still from the driver context) the device
protection.
Or is there another way to create a misc device for everybody (crw_rw_rw_)?
Looks like the mode = 0666 was successfully passed to the kernel:
> cat /sys/class/misc/lab1/uevent
MAJOR=10
MINOR=54
DEVNAME=lab1
DEVMODE=0666
Thanks for your help,
Stephan
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