lib,match: split match_fstype() from libmount

Signed-off-by: Karel Zak <kzak@redhat.com>

include/match.h

@@ -0,0 +1,12 @@
+/*
+ * Copyright (C) 2011 Karel Zak <kzak@redhat.com>
+ *
+ * This file may be redistributed under the terms of the
+ * GNU Lesser General Public License.
+ */
+#ifndef UTIL_LINUX_MATCH_H
+#define UTIL_LINUX_MATCH_H
+
+extern int match_fstype(const char *type, const char *pattern);
+
+#endif /* UTIL_LINUX_MATCH_H */

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;
+}

libmount/src/Makefile.am

@@ -16,6 +16,7 @@ libmount_la_SOURCES =	mountP.h version.c utils.c test.c init.c cache.c \
 			context_loopdev.c \
 			$(mountinc_HEADERS) \
 			$(top_srcdir)/lib/at.c \
+			$(top_srcdir)/lib/match.c \
 			$(top_srcdir)/include/list.h \
 			$(top_srcdir)/lib/mangle.c \
 			$(top_srcdir)/lib/canonicalize.c \

libmount/src/utils.c

@@ -245,35 +245,7 @@ int mnt_fstype_is_netfs(const char *type)
  */
 int mnt_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;
+	return match_fstype(type, pattern);
 }