diff --git a/src/plugins/platforms/wayland/qwaylandshmbackingstore.cpp b/src/plugins/platforms/wayland/qwaylandshmbackingstore.cpp index a8e59637a1f..2e0c2491fe4 100644 --- a/src/plugins/platforms/wayland/qwaylandshmbackingstore.cpp +++ b/src/plugins/platforms/wayland/qwaylandshmbackingstore.cpp @@ -16,6 +16,7 @@ #include +#include #include #include @@ -25,6 +26,9 @@ # ifndef MFD_CLOEXEC # define MFD_CLOEXEC 0x0001U # endif +# ifndef MFD_ALLOW_SEALING +# define MFD_ALLOW_SEALING 0x0002U +# endif #endif QT_BEGIN_NAMESPACE @@ -39,7 +43,9 @@ QWaylandShmBuffer::QWaylandShmBuffer(QWaylandDisplay *display, int fd = -1; #ifdef SYS_memfd_create - fd = syscall(SYS_memfd_create, "wayland-shm", MFD_CLOEXEC); + fd = syscall(SYS_memfd_create, "wayland-shm", MFD_CLOEXEC | MFD_ALLOW_SEALING); + if (fd >= 0) + fcntl(fd, F_ADD_SEALS, F_SEAL_SHRINK | F_SEAL_SEAL); #endif QScopedPointer filePointer;