From: oetiker <oetiker@a5681a0c-68f1-0310-ab6d-d61299d08faa>
Date: Sat, 14 May 2005 15:07:35 +0000 (+0000)
Subject: check cookie read for success
X-Git-Url: https://git.tokkee.org/?a=commitdiff_plain;h=8eb3585d8542905c0d968c3f4c5035657db20cdd;p=rrdtool-all.git

check cookie read for success

git-svn-id: svn://svn.oetiker.ch/rrdtool/branches/1.2@557 a5681a0c-68f1-0310-ab6d-d61299d08faa
---

diff --git a/program/src/rrd_open.c b/program/src/rrd_open.c
index ff68ca42..7b1a0f1d 100644
--- a/program/src/rrd_open.c
+++ b/program/src/rrd_open.c
@@ -101,11 +101,17 @@ rrd_open(const char *file_name, FILE **in_file, rrd_t *rrd, int rdwr)
     if ((MYVAR = malloc(sizeof(MYVART) * MYCNT)) == NULL) {\
 	rrd_set_error("" #MYVAR " malloc"); \
         fclose(*in_file); \
-    return (-1); } \
+        return (-1); } \
     fread(MYVAR,sizeof(MYVART),MYCNT, *in_file); 
 
 
     MYFREAD(rrd->stat_head, stat_head_t,  1)
+    /* lets see if the first read worked */
+    if (ferror( *in_file )){
+	rrd_set_error("reading the cookie off %s faild",file_name);
+	fclose(*in_file);
+	return(-1);
+    }	
     version = atoi(rrd->stat_head->version);
 
 	/* lets do some test if we are on track ... */