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Commit 1017779f authored by Eric Biggers's avatar Eric Biggers Committed by Jaegeuk Kim
Browse files

statx: define STATX_ATTR_VERITY 



Add a statx attribute bit STATX_ATTR_VERITY which will be set if the
file has fs-verity enabled.  This is the statx() equivalent of
FS_VERITY_FL which is returned by FS_IOC_GETFLAGS.

This is useful because it allows applications to check whether a file is
a verity file without opening it.  Opening a verity file can be
expensive because the fsverity_info is set up on open, which involves
parsing metadata and optionally verifying a cryptographic signature.

This is analogous to how various other bits are exposed through both
FS_IOC_GETFLAGS and statx(), e.g. the encrypt bit.

Reviewed-by: default avatarAndreas Dilger <adilger@dilger.ca>
Acked-by: default avatarDarrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: default avatarEric Biggers <ebiggers@google.com>
parent eb08e625

include/linux/stat.h

+2 −1
Original line number Diff line number Diff line
@@ -33,7 +33,8 @@ struct kstat { 
	 STATX_ATTR_IMMUTABLE |				\

	 STATX_ATTR_APPEND |				\

	 STATX_ATTR_NODUMP |				\

	 STATX_ATTR_ENCRYPTED				\

	 STATX_ATTR_ENCRYPTED |				\

	 STATX_ATTR_VERITY				\

	 )/* Attrs corresponding to FS_*_FL flags */

	u64		ino;

	dev_t		dev;

include/uapi/linux/stat.h

+1 −1
Original line number Diff line number Diff line
@@ -167,8 +167,8 @@ struct statx { 
#define STATX_ATTR_APPEND		0x00000020 /* [I] File is append-only */

#define STATX_ATTR_NODUMP		0x00000040 /* [I] File is not to be dumped */

#define STATX_ATTR_ENCRYPTED		0x00000800 /* [I] File requires key to decrypt in fs */



#define STATX_ATTR_AUTOMOUNT		0x00001000 /* Dir: Automount trigger */

#define STATX_ATTR_VERITY		0x00100000 /* [I] Verity protected file */





#endif /* _UAPI_LINUX_STAT_H */