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>

1 files changed, 4 insertions, 4 deletions

diff --git a/block/genhd.c b/block/genhd.c
index 2ad91ddad8e2..517e4332cb37 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -998,12 +998,12 @@ struct class block_class = {
         .name           = "block",
 };
 
-static char *block_nodename(struct device *dev)
+static char *block_devnode(struct device *dev, mode_t *mode)
 {
         struct gendisk *disk = dev_to_disk(dev);
 
-        if (disk->nodename)
-                return disk->nodename(disk);
+        if (disk->devnode)
+                return disk->devnode(disk, mode);
         return NULL;
 }
 
@@ -1011,7 +1011,7 @@ static struct device_type disk_type = {
         .name           = "disk",
         .groups         = disk_attr_groups,
         .release        = disk_release,
-        .nodename       = block_nodename,
+        .devnode        = block_devnode,
 };
 
 #ifdef CONFIG_PROC_FS