X-Git-Url: http://git.sven.stormbind.net/?a=blobdiff_plain;f=dump%2Fdump.c;h=8c9637616a6cbce1f7679ea02f675b7200be81bd;hb=67926d683b4aecd83193718510fe4f908e18865f;hp=7ede5508cf8dd839b258951c0862281f5d46a83a;hpb=21a474abad45d108a72be1dc0cf5e509652ff09f;p=sven%2Fexfatprogs.git

diff --git a/dump/dump.c b/dump/dump.c
index 7ede550..8c96376 100644
--- a/dump/dump.c
+++ b/dump/dump.c
@@ -90,6 +90,12 @@ static int exfat_show_ondisk_all_info(struct exfat_blk_dev *bd)
 		goto free_ppbr;
 	}
 
+	if (memcmp(ppbr->bpb.oem_name, "EXFAT   ", 8) != 0) {
+		exfat_err("Bad fs_name in boot sector, which does not describe a valid exfat filesystem\n");
+		ret = -EINVAL;
+		goto free_ppbr;
+	}
+
 	pbsx = &ppbr->bsx;
 
 	if (pbsx->sect_size_bits < EXFAT_MIN_SECT_SIZE_BITS ||
@@ -217,6 +223,7 @@ int main(int argc, char *argv[])
 	bool version_only = false;
 
 	init_user_input(&ui);
+	ui.writeable = false;
 
 	if (!setlocale(LC_CTYPE, ""))
 		exfat_err("failed to init locale/codeset\n");