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 <David@Fries.net>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 files changed, 66 insertions, 6 deletions

diff --git a/src/egl/drivers/dri2/platform_wayland.c b/src/egl/drivers/dri2/platform_wayland.c
index ad649b141d..0f439c7110 100644
--- a/src/egl/drivers/dri2/platform_wayland.c
+++ b/src/egl/drivers/dri2/platform_wayland.c
@@ -748,7 +748,16 @@ drm_handle_device(void *data, struct wl_drm *drm, const char *device)
    if (!dri2_dpy->device_name)
       return;
 
-   dri2_dpy->fd = open(dri2_dpy->device_name, O_RDWR);
+#ifdef O_CLOEXEC
+   dri2_dpy->fd = open(dri2_dpy->device_name, O_RDWR | O_CLOEXEC);
+   if (dri2_dpy->fd == -1 && errno == EINVAL)
+#endif
+   {
+      dri2_dpy->fd = open(dri2_dpy->device_name, O_RDWR);
+      if (dri2_dpy->fd != -1)
+         fcntl(dri2_dpy->fd, F_SETFD, fcntl(dri2_dpy->fd, F_GETFD) |
+            FD_CLOEXEC);
+   }
    if (dri2_dpy->fd == -1) {
       _eglLog(_EGL_WARNING, "wayland-egl: could not open %s (%s)",
 	      dri2_dpy->device_name, strerror(errno));
diff --git a/src/egl/drivers/dri2/platform_x11.c b/src/egl/drivers/dri2/platform_x11.c
index a100f4d284..7486a91ec0 100644
--- a/src/egl/drivers/dri2/platform_x11.c
+++ b/src/egl/drivers/dri2/platform_x11.c
@@ -1083,7 +1083,16 @@ dri2_initialize_x11_dri2(_EGLDriver *drv, _EGLDisplay *disp)
    if (!dri2_load_driver(disp))
       goto cleanup_conn;
 
+#ifdef O_CLOEXEC
    dri2_dpy->fd = open(dri2_dpy->device_name, O_RDWR | O_CLOEXEC);
+   if (dri2_dpy->fd == -1 && errno == EINVAL)
+#endif
+   {
+      dri2_dpy->fd = open(dri2_dpy->device_name, O_RDWR);
+      if (dri2_dpy->fd != -1)
+         fcntl(dri2_dpy->fd, F_SETFD, fcntl(dri2_dpy->fd, F_GETFD) |
+            FD_CLOEXEC);
+   }
    if (dri2_dpy->fd == -1) {
       _eglLog(_EGL_WARNING,
 	      "DRI2: could not open %s (%s)", dri2_dpy->device_name,
diff --git a/src/gallium/state_trackers/egl/drm/native_drm.c b/src/gallium/state_trackers/egl/drm/native_drm.c
index 6ac12100f7..ba7afdbe3b 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);
diff --git a/src/gallium/state_trackers/egl/fbdev/native_fbdev.c b/src/gallium/state_trackers/egl/fbdev/native_fbdev.c
index e126888df9..b45ab5c4f2 100644
--- a/src/gallium/state_trackers/egl/fbdev/native_fbdev.c
+++ b/src/gallium/state_trackers/egl/fbdev/native_fbdev.c
@@ -515,7 +515,16 @@ native_create_display(void *dpy, boolean use_sw)
 
    /* well, this makes fd 0 being ignored */
    if (!dpy) {
-      fd = open("/dev/fb0", O_RDWR);
+      const char *device_name="/dev/fb0";
+#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);
+      }
    }
    else {
       fd = dup((int) pointer_to_intptr(dpy));
diff --git a/src/gallium/state_trackers/egl/wayland/native_drm.c b/src/gallium/state_trackers/egl/wayland/native_drm.c
index 8daf7830dd..e3bd628675 100644
--- a/src/gallium/state_trackers/egl/wayland/native_drm.c
+++ b/src/gallium/state_trackers/egl/wayland/native_drm.c
@@ -133,7 +133,15 @@ drm_handle_device(void *data, struct wl_drm *drm, const char *device)
    if (!drmdpy->device_name)
       return;
 
-   drmdpy->fd = open(drmdpy->device_name, O_RDWR);
+#ifdef O_CLOEXEC
+   drmdpy->fd = open(drmdpy->device_name, O_RDWR | O_CLOEXEC);
+   if (drmdpy->fd == -1 && errno == EINVAL)
+#endif
+   {
+      drmdpy->fd = open(drmdpy->device_name, O_RDWR);
+      if (drmdpy->fd != -1)
+         fcntl(drmdpy->fd, F_SETFD, fcntl(drmdpy->fd, F_GETFD) | FD_CLOEXEC);
+   }
    if (drmdpy->fd == -1) {
       _eglLog(_EGL_WARNING, "wayland-egl: could not open %s (%s)",
               drmdpy->device_name, strerror(errno));
diff --git a/src/gallium/state_trackers/egl/x11/x11_screen.c b/src/gallium/state_trackers/egl/x11/x11_screen.c
index 1e20f941c8..f8f9e2ae76 100644
--- a/src/gallium/state_trackers/egl/x11/x11_screen.c
+++ b/src/gallium/state_trackers/egl/x11/x11_screen.c
@@ -265,7 +265,15 @@ x11_screen_enable_dri2(struct x11_screen *xscr,
       if (!x11_screen_probe_dri2(xscr, NULL, NULL))
          return -1;
 
-      fd = open(xscr->dri_device, O_RDWR);
+#ifdef O_CLOEXEC
+      fd = open(xscr->dri_device, O_RDWR | O_CLOEXEC);
+      if (fd == -1 && errno == EINVAL)
+#endif
+      {
+         fd = open(xscr->dri_device, O_RDWR);
+         if (fd != -1)
+            fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC);
+      }
       if (fd < 0) {
          _eglLog(_EGL_WARNING, "failed to open %s", xscr->dri_device);
          return -1;
diff --git a/src/glx/dri2_glx.c b/src/glx/dri2_glx.c
index b09606addd..b6988c3ca6 100644
--- a/src/glx/dri2_glx.c
+++ b/src/glx/dri2_glx.c
@@ -1045,7 +1045,15 @@ dri2CreateScreen(int screen, struct glx_display * priv)
       goto handle_error;
    }
 
-   psc->fd = open(deviceName, O_RDWR);
+#ifdef O_CLOEXEC
+   psc->fd = open(deviceName, O_RDWR | O_CLOEXEC);
+   if (psc->fd == -1 && errno == EINVAL)
+#endif
+   {
+      psc->fd = open(deviceName, O_RDWR);
+      if (psc->fd != -1)
+         fcntl(psc->fd, F_SETFD, fcntl(psc->fd, F_GETFD) | FD_CLOEXEC);
+   }
    if (psc->fd < 0) {
       ErrorMessageF("failed to open drm device: %s\n", strerror(errno));
       goto handle_error;