From 065ab4c4701ff6e28785eb8172925fc3068cc15e Mon Sep 17 00:00:00 2001 From: Eric Biggers Date: Wed, 9 Oct 2019 16:34:18 -0700 Subject: [PATCH] docs: ioctl-number: document fscrypt ioctl numbers 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 --- 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 bef79cd..4ef8643 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 -- 2.7.4