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| author |   Eric Biggers <ebiggers@google.com> | 2019-10-29 13:41:41 -0700 |
|---|---|---|
| committer | Eric Biggers <ebiggers@google.com> | 2019-11-13 12:15:34 -0800 |
| commit | 73f0ec02d670a61afcef49bc0a74d42e324276ea (patch) | |
| tree | d8b852572491a50a63d3139a0466aff179d8d518 /Documentation | |
| parent | f2fs: support STATX_ATTR_VERITY (diff) | |
| download | linux-dev-73f0ec02d670a61afcef49bc0a74d42e324276ea.tar.xz linux-dev-73f0ec02d670a61afcef49bc0a74d42e324276ea.zip | |
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: Eric Biggers <ebiggers@google.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/filesystems/fsverity.rst | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/Documentation/filesystems/fsverity.rst b/Documentation/filesystems/fsverity.rst index dd55204c9ef8..a95536b6443c 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 ====================== |