From e454cea20bdcff10ee698d11b8882662a0153a47 Mon Sep 17 00:00:00 2001 From: Kay Sievers Date: Fri, 18 Sep 2009 23:01:12 +0200 Subject: 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 Signed-off-by: Greg Kroah-Hartman --- drivers/char/tty_io.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'drivers/char/tty_io.c') diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c index a3afa0c387cd..c70d9dabefae 100644 --- a/drivers/char/tty_io.c +++ b/drivers/char/tty_io.c @@ -3056,11 +3056,22 @@ void __init console_init(void) } } +static char *tty_devnode(struct device *dev, mode_t *mode) +{ + if (!mode) + return NULL; + if (dev->devt == MKDEV(TTYAUX_MAJOR, 0) || + dev->devt == MKDEV(TTYAUX_MAJOR, 2)) + *mode = 0666; + return NULL; +} + static int __init tty_class_init(void) { tty_class = class_create(THIS_MODULE, "tty"); if (IS_ERR(tty_class)) return PTR_ERR(tty_class); + tty_class->devnode = tty_devnode; return 0; } -- cgit v1.2.3