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net/9p: detect invalid options as much as possible

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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.

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Chengguang Xu <[email protected]>
Reviewed-by: Andrew Morton <[email protected]>
Cc: Eric Van Hensbergen <[email protected]>
Cc: Ron Minnich <[email protected]>
Cc: Latchesar Ionkov <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Chengguang Xu 2018-06-07 17:05:03 -07:00 • committed by Linus Torvalds
commit 8d856c72b4
1 changed files with 5 additions and 8 deletions
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13
net/9p/client.c
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@ -198,8 +198,6 @@ static int parse_opts(char *opts, struct p9_client *clnt)
pr_info("Could not find request transport: %s\n",
s);
ret = -EINVAL;
kfree(s);
goto free_and_return;
}
kfree(s);
break;
@ -214,13 +212,12 @@ static int parse_opts(char *opts, struct p9_client *clnt)
"problem allocating copy of version arg\n");
goto free_and_return;
}
ret = get_protocol_version(s);
if (ret == -EINVAL) {
kfree(s);
goto free_and_return;
}
r = get_protocol_version(s);
if (r < 0)
ret = r;
else
clnt->proto_version = r;
kfree(s);
clnt->proto_version = ret;
break;
default:
continue;