From 12089155210f8d84054cc8413d79cd2800d26929 Mon Sep 17 00:00:00 2001
From: Karel Zak
Date: Tue, 15 Nov 2011 15:17:19 +0100
Subject: lib,match: split match_fstype() from libmount

Signed-off-by: Karel Zak <kzak@redhat.com>
---
 lib/match.c | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 lib/match.c

(limited to 'lib/match.c')

diff --git a/lib/match.c b/lib/match.c
new file mode 100644
index 000000000..c5c48a0f6
--- /dev/null
+++ b/lib/match.c
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2011 Karel Zak <kzak@redhat.com>
+ *
+ * This file may be redistributed under the terms of the
+ * GNU Lesser General Public License.
+ */
+
+#include <string.h>
+
+/*
+ * match_fstype:
+ * @type: filesystem type
+ * @pattern: filesystem name or comma delimited list of names
+ *
+ * The @pattern list of filesystem can be prefixed with a global
+ * "no" prefix to invert matching of the whole list. The "no" could
+ * also be used for individual items in the @pattern list. So,
+ * "nofoo,bar" has the same meaning as "nofoo,nobar".
+ */
+int match_fstype(const char *type, const char *pattern)
+{
+	int no = 0;		/* negated types list */
+	int len;
+	const char *p;
+
+	if (!pattern && !type)
+		return 1;
+	if (!pattern)
+		return 0;
+
+	if (!strncmp(pattern, "no", 2)) {
+		no = 1;
+		pattern += 2;
+	}
+
+	/* Does type occur in types, separated by commas? */
+	len = strlen(type);
+	p = pattern;
+	while(1) {
+		if (!strncmp(p, "no", 2) && !strncmp(p+2, type, len) &&
+		    (p[len+2] == 0 || p[len+2] == ','))
+			return 0;
+		if (strncmp(p, type, len) == 0 && (p[len] == 0 || p[len] == ','))
+			return !no;
+		p = strchr(p,',');
+		if (!p)
+			break;
+		p++;
+	}
+	return no;
+}
-- 
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