diff options
Diffstat (limited to 'pkg/sentry/fsimpl/verity')
| -rw-r--r-- | pkg/sentry/fsimpl/verity/filesystem.go | 38 | ||||
| -rw-r--r-- | pkg/sentry/fsimpl/verity/verity.go | 20 |
2 files changed, 33 insertions, 25 deletions
diff --git a/pkg/sentry/fsimpl/verity/filesystem.go b/pkg/sentry/fsimpl/verity/filesystem.go index 81dfed266..2f6050cfd 100644 --- a/pkg/sentry/fsimpl/verity/filesystem.go +++ b/pkg/sentry/fsimpl/verity/filesystem.go @@ -267,16 +267,18 @@ func (fs *filesystem) verifyChild(ctx context.Context, parent *dentry, child *de // Verify returns with success. var buf bytes.Buffer if _, err := merkletree.Verify(&merkletree.VerifyParams{ - Out: &buf, - File: &fdReader, - Tree: &fdReader, - Size: int64(parentSize), - Name: parent.name, - Mode: uint32(parentStat.Mode), - UID: parentStat.UID, - GID: parentStat.GID, + Out: &buf, + File: &fdReader, + Tree: &fdReader, + Size: int64(parentSize), + Name: parent.name, + Mode: uint32(parentStat.Mode), + UID: parentStat.UID, + GID: parentStat.GID, + //TODO(b/156980949): Support passing other hash algorithms. + HashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA256, ReadOffset: int64(offset), - ReadSize: int64(merkletree.DigestSize()), + ReadSize: int64(merkletree.DigestSize(linux.FS_VERITY_HASH_ALG_SHA256)), Expected: parent.hash, DataAndTreeInSameFile: true, }); err != nil && err != io.EOF { @@ -342,14 +344,16 @@ func (fs *filesystem) verifyStat(ctx context.Context, d *dentry, stat linux.Stat var buf bytes.Buffer params := &merkletree.VerifyParams{ - Out: &buf, - Tree: &fdReader, - Size: int64(size), - Name: d.name, - Mode: uint32(stat.Mode), - UID: stat.UID, - GID: stat.GID, - ReadOffset: 0, + Out: &buf, + Tree: &fdReader, + Size: int64(size), + Name: d.name, + Mode: uint32(stat.Mode), + UID: stat.UID, + GID: stat.GID, + //TODO(b/156980949): Support passing other hash algorithms. + HashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA256, + ReadOffset: 0, // Set read size to 0 so only the metadata is verified. ReadSize: 0, Expected: d.hash, diff --git a/pkg/sentry/fsimpl/verity/verity.go b/pkg/sentry/fsimpl/verity/verity.go index e2cbb206f..92ca6ca6b 100644 --- a/pkg/sentry/fsimpl/verity/verity.go +++ b/pkg/sentry/fsimpl/verity/verity.go @@ -600,6 +600,8 @@ func (fd *fileDescription) generateMerkle(ctx context.Context) ([]byte, uint64, params := &merkletree.GenerateParams{ TreeReader: &merkleReader, TreeWriter: &merkleWriter, + //TODO(b/156980949): Support passing other hash algorithms. + HashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA256, } switch atomic.LoadUint32(&fd.d.mode) & linux.S_IFMT { @@ -836,14 +838,16 @@ func (fd *fileDescription) PRead(ctx context.Context, dst usermem.IOSequence, of } n, err := merkletree.Verify(&merkletree.VerifyParams{ - Out: dst.Writer(ctx), - File: &dataReader, - Tree: &merkleReader, - Size: int64(size), - Name: fd.d.name, - Mode: fd.d.mode, - UID: fd.d.uid, - GID: fd.d.gid, + Out: dst.Writer(ctx), + File: &dataReader, + Tree: &merkleReader, + Size: int64(size), + Name: fd.d.name, + Mode: fd.d.mode, + UID: fd.d.uid, + GID: fd.d.gid, + //TODO(b/156980949): Support passing other hash algorithms. + HashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA256, ReadOffset: offset, ReadSize: dst.NumBytes(), Expected: fd.d.hash, |