ecore-drm2: Symlink to libdrm functions during init time

Signed-off-by: Chris Michael <cp.michael@samsung.com>

1 files changed, 90 insertions, 0 deletions

diff --git a/src/lib/ecore_drm2/ecore_drm2.c b/src/lib/ecore_drm2/ecore_drm2.c
index 339362a9c2..372886660f 100644
--- a/src/lib/ecore_drm2/ecore_drm2.c
+++ b/src/lib/ecore_drm2/ecore_drm2.c
@@ -1,12 +1,97 @@
 #include "ecore_drm2_private.h"
 
 static int _ecore_drm2_init_count = 0;
+static void *drm_lib = NULL;
 
 int _ecore_drm2_log_dom = -1;
 
 EAPI int ECORE_DRM2_EVENT_OUTPUT_CHANGED = -1;
 EAPI int ECORE_DRM2_EVENT_ACTIVATE = -1;
 
+static Eina_Bool
+_ecore_drm2_link(void)
+{
+   int i, fail;
+   const char *drm_libs[] =
+     {
+        "libdrm.so.2",
+        "libdrm.so.1",
+        "libdrm.so.0",
+        "libdrm.so",
+        NULL,
+     };
+
+#define SYM(lib, xx)                         \
+   do {                                      \
+      sym_ ## xx = dlsym(lib, #xx);          \
+      if (!(sym_ ## xx)) {                   \
+         fail = 1;                           \
+      }                                      \
+   } while (0)
+
+   if (drm_lib) return EINA_TRUE;
+
+   for (i = 0; drm_libs[i]; i++)
+     {
+        drm_lib = dlopen(drm_libs[i], RTLD_LOCAL | RTLD_LAZY);
+        if (!drm_lib) continue;
+
+        fail = 0;
+
+        SYM(drm_lib, drmIoctl);
+        /* SYM(drm_lib, drmClose); */
+        /* SYM(drm_lib, drmWaitVBlank); */
+        SYM(drm_lib, drmHandleEvent);
+        SYM(drm_lib, drmGetVersion);
+        SYM(drm_lib, drmFreeVersion);
+        SYM(drm_lib, drmModeGetProperty);
+        SYM(drm_lib, drmModeFreeProperty);
+        SYM(drm_lib, drmModeGetPropertyBlob);
+        SYM(drm_lib, drmModeFreePropertyBlob);
+        SYM(drm_lib, drmModeDestroyPropertyBlob);
+        SYM(drm_lib, drmModeObjectGetProperties);
+        SYM(drm_lib, drmModeFreeObjectProperties);
+        SYM(drm_lib, drmModeCreatePropertyBlob);
+#ifdef HAVE_ATOMIC_DRM
+        SYM(drm_lib, drmModeAtomicAlloc);
+        SYM(drm_lib, drmModeAtomicFree);
+        SYM(drm_lib, drmModeAtomicAddProperty);
+        SYM(drm_lib, drmModeAtomicCommit);
+        SYM(drm_lib, drmModeAtomicSetCursor);
+#endif
+        SYM(drm_lib, drmModeGetEncoder);
+        SYM(drm_lib, drmModeFreeEncoder);
+        SYM(drm_lib, drmModeGetCrtc);
+        SYM(drm_lib, drmModeFreeCrtc);
+        SYM(drm_lib, drmModeSetCrtc);
+        SYM(drm_lib, drmModeGetResources);
+        SYM(drm_lib, drmModeFreeResources);
+        SYM(drm_lib, drmModeGetConnector);
+        SYM(drm_lib, drmModeFreeConnector);
+        SYM(drm_lib, drmModeConnectorSetProperty);
+        SYM(drm_lib, drmGetCap);
+        SYM(drm_lib, drmSetClientCap);
+        SYM(drm_lib, drmModeGetPlaneResources);
+        SYM(drm_lib, drmModeFreePlaneResources);
+        SYM(drm_lib, drmModeGetPlane);
+        SYM(drm_lib, drmModeFreePlane);
+        SYM(drm_lib, drmModeAddFB);
+        SYM(drm_lib, drmModeRmFB);
+        SYM(drm_lib, drmModeDirtyFB);
+
+        if (fail)
+          {
+             dlclose(drm_lib);
+             drm_lib = NULL;
+          }
+        else
+          break;
+     }
+
+   if (!drm_lib) return EINA_FALSE;
+   return EINA_TRUE;
+}
+
 EAPI int
 ecore_drm2_init(void)
 {
@@ -43,8 +128,13 @@ ecore_drm2_init(void)
    ECORE_DRM2_EVENT_OUTPUT_CHANGED = ecore_event_type_new();
    ECORE_DRM2_EVENT_ACTIVATE = ecore_event_type_new();
 
+   if (!_ecore_drm2_link()) goto link_err;
+
    return _ecore_drm2_init_count;
 
+link_err:
+   eina_log_domain_unregister(_ecore_drm2_log_dom);
+   _ecore_drm2_log_dom = -1;
 log_err:
    elput_shutdown();
 elput_err: