From a74edeb738198cbe7945fa3682da6e7030c13ce9 Mon Sep 17 00:00:00 2001
From: akiyamn
Date: Tue, 8 Sep 2020 13:24:38 +1000
Subject: Added proper error handling

---
 fileutil.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/fileutil.c b/fileutil.c
index 86c4cfc..fa1ccac 100644
--- a/fileutil.c
+++ b/fileutil.c
@@ -15,7 +15,7 @@
 #include <unistd.h>
 #include <sys/file.h>
 #include <stdlib.h>
-#include <stdio.h>
+#include <errno.h>
 #include <string.h>
 #include "fileutil.h"
 
@@ -42,9 +42,11 @@ void to_stderr(char *string) {
 int open_file(char *path, int flags){
         // Read the input file
     int fd;
-    if ((fd = open(path, flags, NEW_FILE_PERMS)) <= 2){
+    if ((fd = open(path, flags, NEW_FILE_PERMS)) < 0){
+        int error = errno;
         to_stderr(path);
-        to_stderr(" could not be opened.\n");
+        to_stderr(" could not be opened: ");
+        to_stderr(strerror(error));
         exit(1); // Exit if an error occurs
     }
     return fd;
@@ -176,7 +178,7 @@ void execute_subprogram(arguments_t args, char *argv[]) {
 
 int main(int argc, char *argv[]) {
     arguments_t args = parse_arguments(argc, argv);
-    if (!args.valid) 
+    if (!args.valid) {
         to_stderr("Invalid arguments provided.");
         return 1;
     } else {
-- 
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