From 478ae0ca08c239e83803191317ae99d66708306c Mon Sep 17 00:00:00 2001 From: Chengguang Xu Date: Thu, 7 Jun 2018 17:05:07 -0700 Subject: fs/9p: detect 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 'cache' and 'access' when detecting -EINVAL. Link: http://lkml.kernel.org/r/1525340676-34072-2-git-send-email-cgxu519@gmx.com Signed-off-by: Chengguang Xu Reviewed-by: Andrew Morton Cc: Eric Van Hensbergen Cc: Ron Minnich Cc: Latchesar Ionkov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/9p/v9fs.c | 29 ++++++++++++----------------- 1 file changed, 12 insertions(+), 17 deletions(-) (limited to 'fs/9p') diff --git a/fs/9p/v9fs.c b/fs/9p/v9fs.c index e622f0f10502..0429c8ee58f1 100644 --- a/fs/9p/v9fs.c +++ b/fs/9p/v9fs.c @@ -210,12 +210,12 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts) p9_debug(P9_DEBUG_ERROR, "integer field, but no integer?\n"); ret = r; - continue; - } - v9ses->debug = option; + } else { + v9ses->debug = option; #ifdef CONFIG_NET_9P_DEBUG - p9_debug_level = option; + p9_debug_level = option; #endif + } break; case Opt_dfltuid: @@ -231,7 +231,6 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts) p9_debug(P9_DEBUG_ERROR, "uid field, but not a uid?\n"); ret = -EINVAL; - continue; } break; case Opt_dfltgid: @@ -247,7 +246,6 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts) p9_debug(P9_DEBUG_ERROR, "gid field, but not a gid?\n"); ret = -EINVAL; - continue; } break; case Opt_afid: @@ -256,9 +254,9 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts) p9_debug(P9_DEBUG_ERROR, "integer field, but no integer?\n"); ret = r; - continue; + } else { + v9ses->afid = option; } - v9ses->afid = option; break; case Opt_uname: kfree(v9ses->uname); @@ -306,13 +304,12 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts) "problem allocating copy of cache arg\n"); goto free_and_return; } - ret = get_cache_mode(s); - if (ret == -EINVAL) { - kfree(s); - goto free_and_return; - } + r = get_cache_mode(s); + if (r < 0) + ret = r; + else + v9ses->cache = r; - v9ses->cache = ret; kfree(s); break; @@ -341,14 +338,12 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts) pr_info("Unknown access argument %s\n", s); kfree(s); - goto free_and_return; + continue; } v9ses->uid = make_kuid(current_user_ns(), uid); if (!uid_valid(v9ses->uid)) { ret = -EINVAL; pr_info("Uknown uid %s\n", s); - kfree(s); - goto free_and_return; } } -- cgit v1.2.3-55-g7522