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Driver-Core: extend devnode callbacks to provide permissions

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This allows subsytems to provide devtmpfs with non-default permissions
for the device node. Instead of the default mode of 0600, null, zero,
random, urandom, full, tty, ptmx now have a mode of 0666, which allows
non-privileged processes to access standard device nodes in case no
other userspace process applies the expected permissions.

This also fixes a wrong assignment in pktcdvd and a checkpatch.pl complain.

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Kay Sievers
2009-09-18 23:01:12 +02:00
committed by Live-CD User
parent 78f28b7c55
commit e454cea20b
30 changed files with 116 additions and 79 deletions
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4
drivers/block/aoe/aoechr.c
View File

@ -266,7 +266,7 @@ static const struct file_operations aoe_fops = {
.owner = THIS_MODULE,
};
static char *aoe_nodename(struct device *dev)
static char *aoe_devnode(struct device *dev, mode_t *mode)
{
return kasprintf(GFP_KERNEL, "etherd/%s", dev_name(dev));
}
@ -288,7 +288,7 @@ aoechr_init(void)
unregister_chrdev(AOE_MAJOR, "aoechr");
return PTR_ERR(aoe_class);
}
aoe_class->nodename = aoe_nodename;
aoe_class->devnode = aoe_devnode;
for (i = 0; i < ARRAY_SIZE(chardevs); ++i)
device_create(aoe_class, NULL,

6
drivers/block/pktcdvd.c
View File

@ -2857,7 +2857,7 @@ static struct block_device_operations pktcdvd_ops = {
.media_changed = pkt_media_changed,
};
static char *pktcdvd_nodename(struct gendisk *gd)
static char *pktcdvd_devnode(struct gendisk *gd, mode_t *mode)
{
return kasprintf(GFP_KERNEL, "pktcdvd/%s", gd->disk_name);
}
@ -2914,7 +2914,7 @@ static int pkt_setup_dev(dev_t dev, dev_t* pkt_dev)
disk->fops = &pktcdvd_ops;
disk->flags = GENHD_FL_REMOVABLE;
strcpy(disk->disk_name, pd->name);
disk->nodename = pktcdvd_nodename;
disk->devnode = pktcdvd_devnode;
disk->private_data = pd;
disk->queue = blk_alloc_queue(GFP_KERNEL);
if (!disk->queue)
@ -3070,7 +3070,7 @@ static const struct file_operations pkt_ctl_fops = {
static struct miscdevice pkt_misc = {
.minor = MISC_DYNAMIC_MINOR,
.name = DRIVER_NAME,
.name = "pktcdvd/control",
.nodename = "pktcdvd/control",
.fops = &pkt_ctl_fops
};