src/gallium/winsys/tegra/drm/tegra_drm_winsys.c

   1 /*
   2  * Copyright © 2014-2018 NVIDIA Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23
  24 #include <fcntl.h>
  25
  26 #include "util/os_file.h"
  27 #include "util/u_debug.h"
  28
  29 #include "tegra/tegra_screen.h"
  30
  31 struct pipe_screen *tegra_drm_screen_create(int fd);
  32
  33 struct pipe_screen *tegra_drm_screen_create(int fd)
  34 {
  35    struct pipe_screen *screen;
  36
  37    /*
  38     * NOTE: There are reportedly issues with reusing the file descriptor
  39     * as-is related to Xinerama. Duplicate it to side-step any issues.
  40     */
  41    fd = os_dupfd_cloexec(fd);
  42    if (fd < 0)
  43       return NULL;
  44
  45    screen = tegra_screen_create(fd);
  46    if (!screen)
  47       close(fd);
  48
  49    return screen;
  50 }