From 3655ca8c3d6165930be8741365451929c47fd568 Mon Sep 17 00:00:00 2001
From: kmacy <kmacy@FreeBSD.org>
Date: Mon, 5 May 2008 18:35:55 +0000
Subject: Import basic common and iwarp kernel RDMA infrastructure.

Supported by: Chelsio Inc.
---
 sys/contrib/rdma/krping/getopt.c | 77 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 77 insertions(+)
 create mode 100644 sys/contrib/rdma/krping/getopt.c

(limited to 'sys/contrib/rdma/krping/getopt.c')

diff --git a/sys/contrib/rdma/krping/getopt.c b/sys/contrib/rdma/krping/getopt.c
new file mode 100644
index 0000000..701910e
--- /dev/null
+++ b/sys/contrib/rdma/krping/getopt.c
@@ -0,0 +1,77 @@
+/*
+ * lifted from fs/ncpfs/getopt.c
+ *
+ */
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/ctype.h>
+#include <sys/param.h>
+#include <sys/libkern.h>
+#include "getopt.h"
+
+/**
+ *	krping_getopt - option parser
+ *	@caller: name of the caller, for error messages
+ *	@options: the options string
+ *	@opts: an array of &struct option entries controlling parser operations
+ *	@optopt: output; will contain the current option
+ *	@optarg: output; will contain the value (if one exists)
+ *	@flag: output; may be NULL; should point to a long for or'ing flags
+ *	@value: output; may be NULL; will be overwritten with the integer value
+ *		of the current argument.
+ *
+ *	Helper to parse options on the format used by mount ("a=b,c=d,e,f").
+ *	Returns opts->val if a matching entry in the 'opts' array is found,
+ *	0 when no more tokens are found, -1 if an error is encountered.
+ */
+int krping_getopt(const char *caller, char **options, 
+		  const struct krping_option *opts, char **optopt, 
+		  char **optarg, unsigned long *value)
+{
+	char *token;
+	char *val;
+
+	do {
+		if ((token = strsep(options, ",")) == NULL)
+			return 0;
+	} while (*token == '\0');
+	if (optopt)
+		*optopt = token;
+
+	if ((val = strchr (token, '=')) != NULL) {
+		*val++ = 0;
+	}
+	*optarg = val;
+	for (; opts->name; opts++) {
+		if (!strcmp(opts->name, token)) {
+			if (!val) {
+				if (opts->has_arg & OPT_NOPARAM) {
+					return opts->val;
+				}
+				printf("%s: the %s option requires "
+				       "an argument\n", caller, token);
+				return -EINVAL;
+			}
+			if (opts->has_arg & OPT_INT) {
+				char* v;
+
+				*value = strtoul(val, &v, 0);
+				if (!*v) {
+					return opts->val;
+				}
+				printf("%s: invalid numeric value "
+				       "in %s=%s\n", caller, token, val);
+				return -EDOM;
+			}
+			if (opts->has_arg & OPT_STRING) {
+				return opts->val;
+			}
+			printf("%s: unexpected argument %s to the "
+			       "%s option\n", caller, val, token);
+			return -EINVAL;
+		}
+	}
+	printf("%s: Unrecognized option %s\n", caller, token);
+	return -EOPNOTSUPP;
+}
-- 
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