check return status of all write/fwrite functions as required by glibc 2.4

From: Luca Berra <bluca@vodka.it>

glibc 2.4 is pedantic on ignoring return values from fprintf, fwrite and
write, so now we check the rval and actually do something with it.
in the Grow.c case i only print a warning, since i don't think we can do
anything in case we fail invalidating those superblocks (is should never
happen, but then...)

Signed-off-by: Neil Brown <neilb@suse.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/Monitor.c b/Monitor.c
index 7314cdc..246b9c5 100644
--- a/Monitor.c
+++ b/Monitor.c
@@ -521,7 +521,7 @@ static void alert(char *event, char *dev, char *disc, char *mailaddr, char *mail
 				int n;
 				fprintf(mp, "\nP.S. The /proc/mdstat file current contains the following:\n\n");
 				while ( (n=fread(buf, 1, sizeof(buf), mdstat)) > 0)
-					fwrite(buf, 1, n, mp);
+					n=fwrite(buf, 1, n, mp); /* yes, i don't care about the result */
 				fclose(mdstat);
 			}
 			fclose(mp);