drm: Relax drm file detection, support FreeBSD

Path check was done on /dev/dri/card and /dev/dri/renderD. However,
/dev/dri/by-path is a thing, and on FreeBSD, /dev/dri/ symlinks to
/dev/drm/.

Relax Linux check to /dev/dri/, and add FreeBSD check for /dev/drm/.

1 files changed, 11 insertions, 13 deletions

diff --git a/common/drm.c b/common/drm.c
index 8be2c62..897028c 100644
--- a/common/drm.c
+++ b/common/drm.c
@@ -24,24 +24,22 @@ int drm_drop_master(int fd) {
 	return ioctl(fd, DRM_IOCTL_DROP_MASTER, 0);
 }
 
-static int path_is_drm_card(const char *path) {
-	static const char prefix[] = "/dev/dri/card";
-	static const int prefixlen = STRLEN(prefix);
-	return strncmp(prefix, path, prefixlen) == 0;
-}
-
-static int path_is_drm_render(const char *path) {
-	static const char prefix[] = "/dev/dri/renderD";
+#if defined(__linux__)
+int path_is_drm(const char *path) {
+	static const char prefix[] = "/dev/dri/";
 	static const int prefixlen = STRLEN(prefix);
 	return strncmp(prefix, path, prefixlen) == 0;
 }
 
-int path_is_drm(const char *path) {
-	return path_is_drm_card(path) || path_is_drm_render(path);
-}
-
-#if defined(__linux__)
 int dev_is_drm(dev_t device) {
 	return major(device) == 226;
 }
+#elif defined(__FreeBSD__)
+int path_is_drm(const char *path) {
+	static const char prefix[] = "/dev/drm/";
+	static const int prefixlen = STRLEN(prefix);
+	return strncmp(prefix, path, prefixlen) == 0;
+}
+#else
+#error Unsupported platform
 #endif