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Commit c1884777 authored by Eric Biggers's avatar Eric Biggers Committed by Jaegeuk Kim
Browse files

docs: fs-verity: mention statx() support 



Document that the statx() system call can now be used to check whether a
file is a verity file.

Signed-off-by: default avatarEric Biggers <ebiggers@google.com>
parent e4dffe5a

Documentation/filesystems/fsverity.rst

+8 −0
Original line number Diff line number Diff line
@@ -226,6 +226,14 @@ To do so, check for FS_VERITY_FL (0x00100000) in the returned flags. 
The verity flag is not settable via FS_IOC_SETFLAGS.  You must use

FS_IOC_ENABLE_VERITY instead, since parameters must be provided.



statx

-----



Since Linux v5.5, the statx() system call sets STATX_ATTR_VERITY if

the file has fs-verity enabled.  This can perform better than

FS_IOC_GETFLAGS and FS_IOC_MEASURE_VERITY because it doesn't require

opening the file, and opening verity files can be expensive.



Accessing verity files

======================