linux-kernel - [V9fs-developer][PATCH v2 1/2] net/9p: detecting invalid options as much as possible

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Date:   Tue, 17 Apr 2018 14:45:01 +0800
From:   Chengguang Xu <cgxu519@....com>
To:     ericvh@...il.com, rminnich@...dia.gov, lucho@...kov.net
Cc:     v9fs-developer@...ts.sourceforge.net, linux-kernel@...r.kernel.org,
        Chengguang Xu <cgxu519@....com>
Subject: [V9fs-developer][PATCH v2 1/2] net/9p: detecting invalid options as much as possible

Currently when detecting invalid options in option parsing,
some options(e.g. msize) just set errno and allow to continuously
validate other options so that it can detect invalid options
as much as possible and give proper error messages together.

This patch applies same rule to option 'trans' and 'version'
when detecting EINVAL.

Signed-off-by: Chengguang Xu <cgxu519@....com>
---
Changes since v1:
- Do not change behavior when detecting ENOMEM or unrecognized options.

 net/9p/client.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/9p/client.c b/net/9p/client.c
index 21e6df1..38b02fb 100644
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -199,7 +199,7 @@ static int parse_opts(char *opts, struct p9_client *clnt)
 					s);
 				ret = -EINVAL;
 				kfree(s);
-				goto free_and_return;
+				continue;
 			}
 			kfree(s);
 			break;
@@ -217,7 +217,7 @@ static int parse_opts(char *opts, struct p9_client *clnt)
 			ret = get_protocol_version(s);
 			if (ret == -EINVAL) {
 				kfree(s);
-				goto free_and_return;
+				continue;
 			}
 			kfree(s);
 			clnt->proto_version = ret;
-- 
1.8.3.1