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autofs: make disc device user accessible 

The autofs miscellanous device ioctls that shouldn't require
CAP_SYS_ADMIN need to be accessible to user space applications in order
to be able to get information about autofs mounts.

The module checks capabilities so the miscelaneous device should be fine
with broad permissions.

Link: http://lkml.kernel.org/r/150216641928.11652.7388977863125547969.stgit@pluto.themaw.net
Signed-off-by: Ian Kent <raven@themaw.net>
Cc: Colin Walters <walters@redhat.com>
Cc: Ondrej Holy <oholy@redhat.com>
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
zero-colors
Ian Kent 2017-09-08 16:16:27 -07:00 committed by Linus Torvalds
parent 42f4614821
commit e54c7bcbf1
1 changed files with 2 additions and 1 deletions
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3
fs/autofs4/dev-ioctl.c
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@ -733,7 +733,8 @@ static const struct file_operations _dev_ioctl_fops = {
static struct miscdevice _autofs_dev_ioctl_misc = {
.minor = AUTOFS_MINOR,
.name = AUTOFS_DEVICE_NAME,
.fops = &_dev_ioctl_fops
.fops = &_dev_ioctl_fops,
.mode = 0644,
};
MODULE_ALIAS_MISCDEV(AUTOFS_MINOR);