diff options
| author | Kees Cook <keescook@chromium.org> | 2021-04-05 14:39:59 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-04-09 16:58:15 +0200 |
| commit | 312723a0b34d6d110aa4427a982536bb36ab8471 (patch) | |
| tree | 09491e458150de425af70e214cec1719a5385f82 /fs/debugfs | |
| parent | c2f3f755f5c717f3621b33ef06d974b9cec4a104 (diff) | |
| download | linux-stable-312723a0b34d6d110aa4427a982536bb36ab8471.tar.gz linux-stable-312723a0b34d6d110aa4427a982536bb36ab8471.tar.bz2 linux-stable-312723a0b34d6d110aa4427a982536bb36ab8471.zip | |
debugfs: Make debugfs_allow RO after init
Since debugfs_allow is only set at boot time during __init, make it
read-only after being set.
Fixes: a24c6f7bc923 ("debugfs: Add access restriction option")
Cc: Peter Enderborg <peter.enderborg@sony.com>
Reviewed-by: Peter Enderborg <peter.enderborg@sony.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20210405213959.3079432-1-keescook@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/debugfs')
| -rw-r--r-- | fs/debugfs/inode.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c index 22e86ae4dd5a..1d252164d97b 100644 --- a/fs/debugfs/inode.c +++ b/fs/debugfs/inode.c @@ -35,7 +35,7 @@ static struct vfsmount *debugfs_mount; static int debugfs_mount_count; static bool debugfs_registered; -static unsigned int debugfs_allow = DEFAULT_DEBUGFS_ALLOW_BITS; +static unsigned int debugfs_allow __ro_after_init = DEFAULT_DEBUGFS_ALLOW_BITS; /* * Don't allow access attributes to be changed whilst the kernel is locked down |