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| author | Eric Biggers <ebiggers@google.com> | 2019-07-22 09:26:22 -0700 |
|---|---|---|
| committer | Eric Biggers <ebiggers@google.com> | 2019-07-28 16:59:16 -0700 |
| commit | 8a1d0f9cacc997bedc017056a94f35dc823394ed (patch) | |
| tree | 90d55ad08622ed954361629d906d11469919abae /fs/verity/init.c | |
| parent | c1d9b584e2cf3f0562d8fcf34574c044d17853a1 (diff) | |
| download | lwn-8a1d0f9cacc997bedc017056a94f35dc823394ed.tar.gz lwn-8a1d0f9cacc997bedc017056a94f35dc823394ed.zip | |
fs-verity: add data verification hooks for ->readpages()
Add functions that verify data pages that have been read from a
fs-verity file, against that file's Merkle tree. These will be called
from filesystems' ->readpage() and ->readpages() methods.
Since data verification can block, a workqueue is provided for these
methods to enqueue verification work from their bio completion callback.
See the "Verifying data" section of
Documentation/filesystems/fsverity.rst for more information.
Reviewed-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Diffstat (limited to 'fs/verity/init.c')
| -rw-r--r-- | fs/verity/init.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/verity/init.c b/fs/verity/init.c index fff1fd634335..b593805aafcc 100644 --- a/fs/verity/init.c +++ b/fs/verity/init.c @@ -41,7 +41,15 @@ static int __init fsverity_init(void) if (err) return err; + err = fsverity_init_workqueue(); + if (err) + goto err_exit_info_cache; + pr_debug("Initialized fs-verity\n"); return 0; + +err_exit_info_cache: + fsverity_exit_info_cache(); + return err; } late_initcall(fsverity_init) |