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