From 49cd2f3a7b986c4248c93daddf3aac5ba11b8756 Mon Sep 17 00:00:00 2001
From: Andrea Mazzoleni <amadvance@users.sourceforge.net>
Date: Sun, 26 Jun 2011 21:19:41 +0200
Subject: [PATCH] Prevent the use of /dev/null for saving the content file.
 It's dangerous because it renames it!

---
 state.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/state.c b/state.c
index 440b7240..fa0f2c45 100644
--- a/state.c
+++ b/state.c
@@ -622,6 +622,10 @@ static void state_write_one(struct snapraid_state* state, const char* path, unsi
 
 	printf("Saving state to %s...\n", path);
 
+	/* ignore some special files */
+	if (strcmp(path, "/dev/null") == 0 || strcmp(path, "NUL") == 0)
+		return;
+
 	pathprint(tmp, sizeof(tmp), "%s.tmp", path);
 	f = fopen(tmp, "wt");
 	if (!f) {