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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 <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Kay Sievers 2009-09-18 23:01:12 +02:00 • committed by Live-CD User
commit e454cea20b
30 changed files with 116 additions and 79 deletions
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4
block/bsg.c
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@ -1062,7 +1062,7 @@ EXPORT_SYMBOL_GPL(bsg_register_queue);
static struct cdev bsg_cdev;
static char *bsg_nodename(struct device *dev)
static char *bsg_devnode(struct device *dev, mode_t *mode)
{
return kasprintf(GFP_KERNEL, "bsg/%s", dev_name(dev));
}
@ -1087,7 +1087,7 @@ static int __init bsg_init(void)
ret = PTR_ERR(bsg_class);
goto destroy_kmemcache;
}
bsg_class->nodename = bsg_nodename;
bsg_class->devnode = bsg_devnode;
ret = alloc_chrdev_region(&devid, 0, BSG_MAX_DEVS, "bsg");
if (ret)