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From 6af4962b30c3a8c4c2859898aa862502c6ef1040 Mon Sep 17 00:00:00 2001
From: Dave Love <dave.love@manchester.ac.uk>
Date: Sun, 14 May 2017 23:14:35 +0100
Subject: [PATCH 17/30] Check for read error

---
 src/lib/config_parser.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/lib/config_parser.c b/src/lib/config_parser.c
index e8127abc..b9ef97b6 100644
--- a/src/lib/config_parser.c
+++ b/src/lib/config_parser.c
@@ -77,6 +77,7 @@ char *singularity_config_get_value(char *key) {
 
     singularity_message(DEBUG, "Called singularity_config_get_value(%s)\n", key);
 
+    errno = 0;
     while ( fgets(line, MAX_LINE_LEN, config_fp) ) {
         if ( ( config_key = strtok(line, "=") ) != NULL ) {
             chomp(config_key);
@@ -89,6 +90,10 @@ char *singularity_config_get_value(char *key) {
             }
         }
     }
+    if ( errno != 0 ) {
+        singularity_message(ERROR, "Reading config file failed: %s\n", strerror(errno));
+        ABORT(255);
+    }
 
     singularity_message(DEBUG, "No configuration file entry found for '%s'\n", key);
     return(NULL);
-- 
2.11.0