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From: Masahiro Yamada <yamada.m@jp.panasonic.com>
To: barebox@lists.infradead.org
Subject: [PATCH] param: add error check to __dev_add_param()
Date: Thu, 29 Jan 2015 11:42:36 +0900	[thread overview]
Message-ID: <1422499357-31461-1-git-send-email-yamada.m@jp.panasonic.com> (raw)

If the argument, name is given with NULL, it would be probably
unexpected behavior.  It should fail rather than register the
NULL-named parameter.

If strdup() fails with out-of-memory, it should also fail
with -ENOMEM.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
---

 lib/parameter.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/lib/parameter.c b/lib/parameter.c
index 71262c4..c658538 100644
--- a/lib/parameter.c
+++ b/lib/parameter.c
@@ -130,6 +130,13 @@ static int __dev_add_param(struct param_d *param, struct device_d *dev, const ch
 	if (get_param_by_name(dev, name))
 		return -EEXIST;
 
+	if (!name)
+		return -EINVAL;
+
+	param->name = strdup(name);
+	if (param->name)
+		return -ENOMEM;
+
 	if (set)
 		param->set = set;
 	else
@@ -139,7 +146,6 @@ static int __dev_add_param(struct param_d *param, struct device_d *dev, const ch
 	else
 		param->get = param_get_generic;
 
-	param->name = strdup(name);
 	param->flags = flags;
 	param->dev = dev;
 	list_add_tail(&param->list, &dev->parameters);
-- 
1.9.1


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             reply	other threads:[~2015-01-29  2:43 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-01-29  2:42 Masahiro Yamada [this message]
2015-01-29  8:56 ` Sascha Hauer
2015-01-29  9:15   ` Masahiro Yamada

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