From: Arran Cudbard-Bell <a.cudbardb@freeradius.org>
Date: Thu, 7 Mar 2013 19:26:54 +0000 (-0500)
Subject: Add function for checking whether files exist
X-Git-Tag: release_3_0_0_beta1~805
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5f2979cb9516784379f8990cf0d4ad40bd145481;p=thirdparty%2Ffreeradius-server.git

Add function for checking whether files exist
---

diff --git a/src/include/radiusd.h b/src/include/radiusd.h
index 1ab4b4a5717..0c3002a1186 100644
--- a/src/include/radiusd.h
+++ b/src/include/radiusd.h
@@ -610,6 +610,7 @@ void (*reset_signal(int signo, void (*func)(int)))(int);
 void		request_free(REQUEST **request);
 int		rad_mkdir(char *directory, mode_t mode);
 int		rad_checkfilename(const char *filename);
+int		rad_file_exists(const char *filename);
 void		*rad_malloc(size_t size); /* calls exit(1) on error! */
 void		*rad_calloc(size_t size); /* calls exit(1) on error! */
 void		rad_const_free(const void *ptr);
diff --git a/src/main/util.c b/src/main/util.c
index 13a8ca7f610..e8d3b57adba 100644
--- a/src/main/util.c
+++ b/src/main/util.c
@@ -283,6 +283,31 @@ int rad_checkfilename(const char *filename)
 	return -1;
 }
 
+/** Check if file exists
+ *
+ * @param filename to check.
+ * @return 0 if the file does not exist, 1 if the file exists, -1 if the file
+ *	exists but there was an error opening it. errno value should be usable
+ *	for error messages.
+ */
+int rad_file_exists(const char *filename)
+{
+	int des;
+	int ret = 1;
+	
+	if ((des = open(filename, O_RDONLY)) == -1) {
+		if (errno == ENOENT) {
+			ret = 0;
+		} else {
+			ret = -1;
+		}
+	} else {
+		close(des);
+	}
+	
+	return ret;
+}
+
 /*
  *	Create possibly many directories.
  *