svn add match_fstype.c :(

diff --git a/libbb/match_fstype.c b/libbb/match_fstype.c
new file mode 100644 (file)
index 0000000..7698ceb
--- /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);
+}