From 8ec0b3bf999cad58f8cc33e0fb37dcf7063e4a61 Mon Sep 17 00:00:00 2001
From: oetiker <oetiker@a5681a0c-68f1-0310-ab6d-d61299d08faa>
Date: Sun, 7 Jun 2009 14:27:52 +0000
Subject: [PATCH] check return value from write

git-svn-id: svn://svn.oetiker.ch/rrdtool/trunk/program@1851 a5681a0c-68f1-0310-ab6d-d61299d08faa
---
 src/rrd_open.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/rrd_open.c b/src/rrd_open.c
index d09f640..03cc5b9 100644
--- a/src/rrd_open.c
+++ b/src/rrd_open.c
@@ -216,7 +216,10 @@ rrd_file_t *rrd_open(
     } else {
         rrd_file->file_len = newfile_size;
         lseek(rrd_simple_file->fd, newfile_size - 1, SEEK_SET);
-        write(rrd_simple_file->fd, "\0", 1);   /* poke */
+        if ( write(rrd_simple_file->fd, "\0", 1) == -1){    /* poke */
+            rrd_set_error("write '%s': %s", file_name, rrd_strerror(errno));
+            goto out_close;
+        }
         lseek(rrd_simple_file->fd, 0, SEEK_SET);
     }
 #ifdef HAVE_POSIX_FADVISE
-- 
2.11.0