X-Git-Url: https://wimlib.net/git/?p=wimlib;a=blobdiff_plain;f=programs%2Fimagex.c;h=7dbbc8a4330addd60c8a1f668d62853996ff4e37;hp=b45d2d4b99232e0c2d1ba4daf3445318d58967e5;hb=4a6a0f1a87bdf6726c92f4dad0801fe4313773f3;hpb=16b6e19468c93a370ff2347031a62130c18ad7d7

diff --git a/programs/imagex.c b/programs/imagex.c
index b45d2d4b..7dbbc8a4 100644
--- a/programs/imagex.c
+++ b/programs/imagex.c
@@ -2784,9 +2784,13 @@ imagex_optimize(int argc, tchar **argv)
 
 	wimfile = argv[0];
 
+	ret = file_writable(wimfile);
+	if (ret)
+		return ret;
+
 	ret = wimlib_open_wim(wimfile, open_flags, &w,
 			      imagex_progress_func);
-	if (ret != 0)
+	if (ret)
 		return ret;
 
 	old_size = file_get_size(argv[0]);
@@ -2987,6 +2991,11 @@ imagex_update(int argc, tchar **argv)
 	if (argc < 1 || argc > 2)
 		goto out_usage;
 	wimfile = argv[0];
+
+	ret = file_writable(wimfile);
+	if (ret)
+		goto out;
+
 	ret = wimlib_open_wim(wimfile, open_flags, &wim, imagex_progress_func);
 	if (ret)
 		goto out;