Re: [PATCH 1/3] statxat: Provide IOC flags for Windows fs attributes
From: Steve French <hidden>
Date: 2013-11-12 18:06:15
Also in:
linux-cifs, linux-fsdevel, linux-nfs
I was experimenting with these flags when adding the per-file compression support for cifs and smb2/smb3, and noticed that it would be helpful to be able to display the FILE_ATTRIBUTE_ENCRYPTED flag here too on get (ie to show that the file is encrypted at rest on the server). I am unsure whether displaying the "FILE_ATTRIBUTE_SPARSE" is useful or not here but that is another obvious one. And the other obvious flag to display would be "FILE_ATTRIBUTE_INTEGRITY_STREAM" or equivalent (to indicate that this file is protected by data and metadata checksums, perhaps btrfs and other local file systems may even eventually allow you to configure additional extra data/metadata integrity checks someday as well, not just SMB3). On Tue, Nov 12, 2013 at 11:35 AM, David Howells [off-list ref] wrote:
quoted hunk
Provide IOC flags for Windows fs attributes so that they can be retrieved (or even altered) using the FS_IOC_[GS]ETFLAGS ioctl and read using statxat(). Signed-off-by: David Howells <redacted> --- include/uapi/linux/fs.h | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)diff --git a/include/uapi/linux/fs.h b/include/uapi/linux/fs.h index 6c28b61bb690..8b966f48dd41 100644 --- a/include/uapi/linux/fs.h +++ b/include/uapi/linux/fs.h@@ -191,10 +191,13 @@ struct inodes_stat_t { #define FS_EXTENT_FL 0x00080000 /* Extents */ #define FS_DIRECTIO_FL 0x00100000 /* Use direct i/o */ #define FS_NOCOW_FL 0x00800000 /* Do not cow file */ +#define FS_HIDDEN_FL 0x10000000 /* Windows hidden file attribute */ +#define FS_SYSTEM_FL 0x20000000 /* Windows system file attribute */ +#define FS_ARCHIVE_FL 0x40000000 /* Windows archive file attribute */ #define FS_RESERVED_FL 0x80000000 /* reserved for ext2 lib */ -#define FS_FL_USER_VISIBLE 0x0003DFFF /* User visible flags */ -#define FS_FL_USER_MODIFIABLE 0x000380FF /* User modifiable flags */ +#define FS_FL_USER_VISIBLE 0x7003DFFF /* User visible flags */ +#define FS_FL_USER_MODIFIABLE 0x700380FF /* User modifiable flags */ #define SYNC_FILE_RANGE_WAIT_BEFORE 1 --To unsubscribe from this list: send the line "unsubscribe linux-cifs" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html
-- Thanks, Steve