On Wed, Oct 09, 2019 at 04:45:55PM -0700, Eric Biggers wrote: > From: Eric Biggers <ebiggers@xxxxxxxxxx> > > The 'f' ioctls with numbers 19-26 decimal are currently used for fscrypt > (a.k.a. ext4/f2fs/ubifs encryption), and up to 39 decimal is reserved > for future fscrypt use, as per the comment in fs/ext4/ext4.h. So the > reserved range is 13-27 hex. > > Document this in ioctl-number.rst. > > Signed-off-by: Eric Biggers <ebiggers@xxxxxxxxxx> > --- > Documentation/ioctl/ioctl-number.rst | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/Documentation/ioctl/ioctl-number.rst b/Documentation/ioctl/ioctl-number.rst > index bef79cd4c6b4d..4ef86433bd677 100644 > --- a/Documentation/ioctl/ioctl-number.rst > +++ b/Documentation/ioctl/ioctl-number.rst > @@ -233,6 +233,7 @@ Code Seq# Include File Comments > 'f' 00-0F fs/ext4/ext4.h conflict! > 'f' 00-0F linux/fs.h conflict! > 'f' 00-0F fs/ocfs2/ocfs2_fs.h conflict! > +'f' 13-27 linux/fscrypt.h > 'f' 81-8F linux/fsverity.h > 'g' 00-0F linux/usb/gadgetfs.h > 'g' 20-2F linux/usb/g_printer.h > -- Applied to fscrypt.git for 5.5. - Eric
