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| author | Craig Chi <craigchi@google.com> | 2020-08-20 12:31:52 -0700 |
|---|---|---|
| committer | Andrei Vagin <avagin@gmail.com> | 2020-09-16 12:19:30 -0700 |
| commit | 449986264f9277c4c6174fc82294fc6644923e8b (patch) | |
| tree | 919cb0225c8c1e041b4b33b3bbeec4e84f53c2b8 /pkg/sentry/fsimpl/fuse/connection.go | |
| parent | 983e30c01616b40348735f894d42bbad204f6b99 (diff) | |
Support multiple FUSE kernel versions of FUSE_INIT response struct
The fuse_init_out struct changes in different FUSE kernel versions. A
FUSE server may implement older versions of fuse_init_out, but they
share common attributes from the beginning. Implement variable-length
marshallable interface to support older versions of ABI.
Fixes #3707
Diffstat (limited to 'pkg/sentry/fsimpl/fuse/connection.go')
| -rw-r--r-- | pkg/sentry/fsimpl/fuse/connection.go | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/pkg/sentry/fsimpl/fuse/connection.go b/pkg/sentry/fsimpl/fuse/connection.go index 0e70d37ec..dc169b497 100644 --- a/pkg/sentry/fsimpl/fuse/connection.go +++ b/pkg/sentry/fsimpl/fuse/connection.go @@ -346,6 +346,11 @@ func (r *Response) Error() error { return error(sysErrNo) } +// DataLen returns the size of the response without the header. +func (r *Response) DataLen() uint32 { + return r.hdr.Len - uint32(r.hdr.SizeBytes()) +} + // UnmarshalPayload unmarshals the response data into m. func (r *Response) UnmarshalPayload(m marshal.Marshallable) error { hdrLen := r.hdr.SizeBytes() |