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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/char/raw.c
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@@ -261,7 +261,7 @@ static const struct file_operations raw_ctl_fops = {
static struct cdev raw_cdev;
static char *raw_nodename(struct device *dev)
static char *raw_devnode(struct device *dev, mode_t *mode)
{
return kasprintf(GFP_KERNEL, "raw/%s", dev_name(dev));
}
@@ -289,7 +289,7 @@ static int __init raw_init(void)
ret = PTR_ERR(raw_class);
goto error_region;
}
raw_class->nodename = raw_nodename;
raw_class->devnode = raw_devnode;
device_create(raw_class, NULL, MKDEV(RAW_MAJOR, 0), NULL, "rawctl");
return 0;