[PATCH AUTOSEL 5.15 63/68] nfc: virtual_ncidev: change default device permissions

Sasha Levin
2021-11-30T14:55:06Z

From: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>

[ Upstream commit c26381f97e2a7df43826150dc7d4c207bd6794a5 ]

Device permissions is S_IALLUGO, with many unnecessary bits. Remove them
and also remove read and write permissions from group and others.

Before the change:
crwsrwsrwt 1 0 0 10, 125 Nov 25 13:59 /dev/virtual_nci

After the change:
crw------- 1 0 0 10, 125 Nov 25 14:05 /dev/virtual_nci

Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Reviewed-by: Bongsu Jeon <bongsu.jeon@samsung.com>
Link: https://lore.kernel.org/r/20211125141457.716921-1-cascardo@canonical.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/nfc/virtual_ncidev.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/nfc/virtual_ncidev.c b/drivers/nfc/virtual_ncidev.c
index 221fa3bb8705e..f577449e49350 100644
--- a/drivers/nfc/virtual_ncidev.c
+++ b/drivers/nfc/virtual_ncidev.c
@@ -202,7 +202,7 @@ static int __init virtual_ncidev_init(void)
miscdev.minor = MISC_DYNAMIC_MINOR;
miscdev.name = "virtual_nci";
miscdev.fops = &virtual_ncidev_fops;
- miscdev.mode = S_IALLUGO;
+ miscdev.mode = 0600;

return misc_register(&miscdev);
}
--
2.33.0