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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-11-25 21:21:23 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-11-25 21:21:23 +0100 |
| commit | 1c1ff4836fdab94c7c15b23be57bf64c1e56a36f (patch) | |
| tree | b9cbc6f035098372b17e05decc9fc28cf882d692 /Documentation/filesystems | |
| parent | Merge tag 'fscrypt-for-linus' of git://git.kernel.org/pub/scm/fs/fscrypt/fscrypt (diff) | |
| parent | docs: fs-verity: mention statx() support (diff) | |
| download | linux-1c1ff4836fdab94c7c15b23be57bf64c1e56a36f.tar.xz linux-1c1ff4836fdab94c7c15b23be57bf64c1e56a36f.zip | |
Merge tag 'fsverity-for-linus' of git://git.kernel.org/pub/scm/fs/fscrypt/fscrypt
Pull fsverity updates from Eric Biggers:
"Expose the fs-verity bit through statx()"
* tag 'fsverity-for-linus' of git://git.kernel.org/pub/scm/fs/fscrypt/fscrypt:
docs: fs-verity: mention statx() support
f2fs: support STATX_ATTR_VERITY
ext4: support STATX_ATTR_VERITY
statx: define STATX_ATTR_VERITY
docs: fs-verity: document first supported kernel version
Diffstat (limited to 'Documentation/filesystems')
| -rw-r--r-- | Documentation/filesystems/fsverity.rst | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/Documentation/filesystems/fsverity.rst b/Documentation/filesystems/fsverity.rst index 42a0b6dd9e0b..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 ====================== @@ -398,7 +406,7 @@ pages have been read into the pagecache. (See `Verifying data`_.) ext4 ---- -ext4 supports fs-verity since Linux TODO and e2fsprogs v1.45.2. +ext4 supports fs-verity since Linux v5.4 and e2fsprogs v1.45.2. To create verity files on an ext4 filesystem, the filesystem must have been formatted with ``-O verity`` or had ``tune2fs -O verity`` run on @@ -434,7 +442,7 @@ also only supports extent-based files. f2fs ---- -f2fs supports fs-verity since Linux TODO and f2fs-tools v1.11.0. +f2fs supports fs-verity since Linux v5.4 and f2fs-tools v1.11.0. To create verity files on an f2fs filesystem, the filesystem must have been formatted with ``-O verity``. |