Build optimized and suppress warning on write error.

2 files changed, 5 insertions, 2 deletions

diff --git a/Makefile b/Makefile
index 8973308..3c870d8 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-CFLAGS=-g
+CFLAGS=-O2 -Wall
 utmpr:
 clean:
 	rm -f utmpr
diff --git a/utmpr.c b/utmpr.c
index 3456d0c..a111f74 100644
--- a/utmpr.c
+++ b/utmpr.c
@@ -198,7 +198,10 @@ void text_to_binary(FILE *fp)
 				       (ip_n[0]));
 		//TODO: ipv6 addresses...
 
-		fwrite(&entry, sizeof(struct utmp), 1, output_file);
+		if (!fwrite(&entry, sizeof(struct utmp), 1, output_file)) {
+			fprintf(stderr, "%s: Could not write output\n", program_name);
+			exit(EXIT_FAILURE);
+		}
 	}
 }