1 files changed, 44 insertions, 0 deletions

diff --git a/libbb/match_fstype.c b/libbb/match_fstype.c
new file mode 100644
index 000000000..7698ceb08
--- /dev/null
+++ b/libbb/match_fstype.c
@@ -0,0 +1,44 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Match fstypes for use in mount unmount
+ * We accept notmpfs,nfs but not notmpfs,nonfs
+ * This allows us to match fstypes that start with no like so
+ *   mount -at ,noddy
+ *
+ * Returns 0 for a match, otherwise -1
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ */
+
+#include "libbb.h"
+
+int match_fstype(const struct mntent *mt, const char *fstype)
+{
+        int no = 0;
+        int len;
+
+        if (!mt)
+                return -1;
+                  
+        if (!fstype)
+                return 0;
+
+        if (fstype[0] == 'n' && fstype[1] == 'o') {
+                no = -1;
+                fstype += 2;
+        }
+
+        len = strlen(mt->mnt_type);
+        while (fstype) {
+                if (!strncmp(mt->mnt_type, fstype, len)
+                 && (!fstype[len] || fstype[len] == ',')
+                ) {
+                        return no;
+                }
+                fstype = strchr(fstype, ',');
+                if (fstype)
+                        fstype++;
+        }
+
+        return -(no + 1);
+}