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authorKay Sievers <kay.sievers@vrfy.org>2009-09-18 23:01:12 +0200
committerLive-CD User <linux@linux.site>2009-09-19 12:50:38 -0700
commite454cea20bdcff10ee698d11b8882662a0153a47 (patch)
treef44581fe57787aef0a4f4dc00993a90ea8e688f6 /drivers/char/misc.c
parent78f28b7c555359c67c2a0d23f7436e915329421e (diff)
Driver-Core: extend devnode callbacks to provide permissions
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>
Diffstat (limited to 'drivers/char/misc.c')
-rw-r--r--drivers/char/misc.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/char/misc.c b/drivers/char/misc.c
index 62c99fa59e2b..1ee27cc23426 100644
--- a/drivers/char/misc.c
+++ b/drivers/char/misc.c
@@ -263,12 +263,14 @@ int misc_deregister(struct miscdevice *misc)
EXPORT_SYMBOL(misc_register);
EXPORT_SYMBOL(misc_deregister);
-static char *misc_nodename(struct device *dev)
+static char *misc_devnode(struct device *dev, mode_t *mode)
{
struct miscdevice *c = dev_get_drvdata(dev);
- if (c->devnode)
- return kstrdup(c->devnode, GFP_KERNEL);
+ if (mode && c->mode)
+ *mode = c->mode;
+ if (c->nodename)
+ return kstrdup(c->nodename, GFP_KERNEL);
return NULL;
}
@@ -287,7 +289,7 @@ static int __init misc_init(void)
err = -EIO;
if (register_chrdev(MISC_MAJOR,"misc",&misc_fops))
goto fail_printk;
- misc_class->nodename = misc_nodename;
+ misc_class->devnode = misc_devnode;
return 0;
fail_printk: