diff options
| -rw-r--r-- | src/v4l2/v4l2_camera_proxy.cpp | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/src/v4l2/v4l2_camera_proxy.cpp b/src/v4l2/v4l2_camera_proxy.cpp index f3470a6d..e114d09f 100644 --- a/src/v4l2/v4l2_camera_proxy.cpp +++ b/src/v4l2/v4l2_camera_proxy.cpp @@ -104,8 +104,16 @@ void *V4L2CameraProxy::mmap(V4L2CameraFile *file, void *addr, size_t length, MutexLocker locker(proxyMutex_); - /* \todo Validate prot and flags properly. */ - if (prot != (PROT_READ | PROT_WRITE)) { + /* + * Mimic the videobuf2 behaviour, which requires PROT_READ and + * MAP_SHARED. + */ + if (!(prot & PROT_READ)) { + errno = EINVAL; + return MAP_FAILED; + } + + if (!(flags & MAP_SHARED)) { errno = EINVAL; return MAP_FAILED; } |