Set close on exec flag FD_CLOEXEC

Set the close on exec flag when opening dri character devices, so they
will be closed and free any resouces allocated in exec.

Signed-off-by: David Fries <[email protected]>
Reviewed-by: Adam Jackson <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>

1 files changed, 10 insertions, 1 deletions

diff --git a/src/gallium/state_trackers/egl/drm/native_drm.c b/src/gallium/state_trackers/egl/drm/native_drm.c
index 6ac12100f76..ba7afdbe3b8 100644
--- a/src/gallium/state_trackers/egl/drm/native_drm.c
+++ b/src/gallium/state_trackers/egl/drm/native_drm.c
@@ -312,7 +312,16 @@ native_create_display(void *dpy, boolean use_sw)
    gbm = dpy;
 
    if (gbm == NULL) {
-      fd = open("/dev/dri/card0", O_RDWR);
+      const char *device_name="/dev/dri/card0";
+#ifdef O_CLOEXEC
+      fd = open(device_name, O_RDWR | O_CLOEXEC);
+      if (fd == -1 && errno == EINVAL)
+#endif
+      {
+         fd = open(device_name, O_RDWR);
+         if (fd != -1)
+            fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC);
+      }
       /* FIXME: Use an internal constructor to create a gbm
        * device with gallium backend directly, without setenv */
       setenv("GBM_BACKEND", "gbm_gallium_drm.so", 1);