From: Daniel Stenberg <daniel@haxx.se>
Date: Mon, 3 Aug 2009 09:06:35 +0000 (+0000)
Subject: respect error code from ftruncate(), mentioned by Peter Sylvester
X-Git-Tag: curl-7_19_6~24
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=9d03dd7fb83371b01997fe8e6bc000ce6d56f8d4;p=curl

respect error code from ftruncate(), mentioned by Peter Sylvester
---

diff --git a/src/main.c b/src/main.c
index c7669ad11..ddca73322 100644
--- a/src/main.c
+++ b/src/main.c
@@ -4991,7 +4991,14 @@ operate(struct Configurable *config, int argc, argv_item_t argv[])
                 fflush(outs.stream);
                 /* truncate file at the position where we started appending */
 #ifdef HAVE_FTRUNCATE
-                ftruncate( fileno(outs.stream), outs.init);
+                if(ftruncate( fileno(outs.stream), outs.init)) {
+                  /* when truncate fails, we can't just append as then we'll
+                     create something strange, bail out */
+                  if(!config->mute)
+                    fprintf(config->errors,
+                            "failed to truncate, exiting\n");
+                  break;
+                }
                 /* now seek to the end of the file, the position where we
                    just truncated the file in a large file-safe way */
                 fseek(outs.stream, 0, SEEK_END);