mount.nfs: add new string tokenizer facility

To quote the strtok(3) man page: "Avoid using these functions."

OK.  We've created our own.  The main reason for this is that strtok(3)
doesn't handle quoted delimiters at all.  We need to handle this:

   context="foo,bar"

where 'context' is a single mount option that sets a token string that
possibly uses the same delimiter that the mount command uses to separate
options (that is, a comma).

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Neil Brown <neilb@suse.de>

1 files changed, 29 insertions, 0 deletions

diff --git a/utils/mount/token.h b/utils/mount/token.h
new file mode 100644
index 0000000..47762dc
--- /dev/null
+++ b/utils/mount/token.h
@@ -0,0 +1,29 @@
+/*
+ * token.h -- tokenize strings, a la strtok(3)
+ *
+ * Copyright (C) 2007 Oracle.  All rights reserved.
+ * Copyright (C) 2007 Chuck Lever <chuck.lever@oracle.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 021110-1307, USA.
+ *
+ */
+
+struct tokenizer_state;
+
+char *next_token(struct tokenizer_state *);
+struct tokenizer_state *init_tokenizer(char *, char);
+int tokenizer_error(struct tokenizer_state *);
+void end_tokenizer(struct tokenizer_state *);