From: Eric Biggers <ebiggers@xxxxxxxxxx> Document that the statx() system call can now be used to check whether a file is a verity file. Signed-off-by: Eric Biggers <ebiggers@xxxxxxxxxx> --- Documentation/filesystems/fsverity.rst | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/Documentation/filesystems/fsverity.rst b/Documentation/filesystems/fsverity.rst index 42a0b6dd9e0b68..3355377a24398d 100644 --- a/Documentation/filesystems/fsverity.rst +++ b/Documentation/filesystems/fsverity.rst @@ -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 ====================== -- 2.24.0.rc1.363.gb1bccd3e3d-goog
