From f09a7ec14abde20a65a2f89a1e47cf8e5565e53e Mon Sep 17 00:00:00 2001
From: Roy Marples <roy@marples.name>
Date: Sun, 26 Jul 2009 15:29:30 +0000
Subject: [PATCH] Fix -f /path/to/config, #176. Also, warn if we cannot open
 the file.

---
 if-options.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/if-options.c b/if-options.c
index 7d30ac6c..7415bebd 100644
--- a/if-options.c
+++ b/if-options.c
@@ -320,6 +320,7 @@ parse_option(struct if_options *ifo, int opt, const char *arg)
 	struct rt *rt;
 
 	switch(opt) {
+	case 'f': /* FALLTHROUGH */
 	case 'g': /* FALLTHROUGH */
 	case 'n': /* FALLTHROUGH */
 	case 'x': /* FALLTHROUGH */
@@ -754,8 +755,11 @@ read_config(const char *file,
 
 	/* Parse our options file */
 	f = fopen(file ? file : CONFIG, "r");
-	if (!f)
+	if (f == NULL) {
+		if (file != NULL)
+			syslog(LOG_ERR, "fopen `%s': %m", file);
 		return ifo;
+	}
 
 	while ((line = get_line(f))) {
 		option = strsep(&line, " \t");
-- 
2.47.2