installer: Detect if we are running in EFI mode

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

src/installer/hw.c

@@ -61,7 +61,7 @@ static int system_chroot(const char* output, const char* path, const char* cmd)
 }
 
 struct hw* hw_init() {
-	struct hw* hw = malloc(sizeof(*hw));
+	struct hw* hw = calloc(1, sizeof(*hw));
 	assert(hw);
 
 	// Initialize libudev
@@ -71,6 +71,11 @@ struct hw* hw_init() {
 		exit(1);
 	}
 
+	// Detect if we are running in EFI mode
+	int ret = access("/sys/firmware/efi", R_OK);
+	if (ret == 0)
+		hw->efi = 1;
+
 	return hw;
 }
 

src/installer/hw.h

@@ -57,6 +57,7 @@
 
 struct hw {
 	struct udev *udev;
+	int efi;
 };
 
 struct hw_disk {

src/installer/main.c

@@ -383,7 +383,9 @@ int main(int argc, char *argv[]) {
 	}
 
 	fprintf(flog, "Install program started.\n");
-		
+	if (hw->efi)
+		fprintf(flog, "EFI mode enabled\n");
+
 	newtInit();
 	newtCls();