util: add anon_file.h for all memfd/temp file usage

Move the Weston os_create_anonymous_file code from egl/wayland into util,
add support for Linux memfd and FreeBSD SHM_ANON,
use that code in anv/aubinator instead of explicit memfd calls for portability.

Acked-by: Lionel Landwerlin <[email protected]>
Reviewed-by: Eric Engestrom <[email protected]>

1 files changed, 2 insertions, 13 deletions

diff --git a/src/intel/vulkan/anv_gem_stubs.c b/src/intel/vulkan/anv_gem_stubs.c
index 8cc3ad1f22e..2c27ce26f37 100644
--- a/src/intel/vulkan/anv_gem_stubs.c
+++ b/src/intel/vulkan/anv_gem_stubs.c
@@ -21,32 +21,21 @@
  * IN THE SOFTWARE.
  */
 
-#include <linux/memfd.h>
 #include <sys/mman.h>
 #include <sys/syscall.h>
 
+#include "util/anon_file.h"
 #include "anv_private.h"
 
-#ifndef HAVE_MEMFD_CREATE
-static inline int
-memfd_create(const char *name, unsigned int flags)
-{
-   return syscall(SYS_memfd_create, name, flags);
-}
-#endif
-
 uint32_t
 anv_gem_create(struct anv_device *device, uint64_t size)
 {
-   int fd = memfd_create("fake bo", MFD_CLOEXEC);
+   int fd = os_create_anonymous_file(size, "fake bo");
    if (fd == -1)
       return 0;
 
    assert(fd != 0);
 
-   if (ftruncate(fd, size) == -1)
-      return 0;
-
    return fd;
 }