[<prev] [next>] [day] [month] [year] [list]
Message-ID: <b8bf37780911040648q1e4a2dc5xf83ea35794f6d01e@mail.gmail.com>
Date: Wed, 4 Nov 2009 12:48:19 -0200
From: André Goddard Rosa <andre.goddard@...il.com>
To: Frederic Weisbecker <fweisbec@...il.com>, laijs@...fujitsu.com,
mingo@...e.hu, davem@...emloft.net, akpm@...ux-foundation.org,
harvey.harrison@...il.com,
linux list <linux-kernel@...r.kernel.org>
Cc: me <andre.goddard@...il.com>
Subject: [PATCH v3 2/7] vsprintf: pre-calculate final string length for later
use
From: André Goddard Rosa <andre.goddard@...il.com>
Date: Tue, 3 Nov 2009 10:45:53 -0200
Subject: [PATCH v3 2/7] vsprintf: pre-calculate final string length
for later use
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Signed-off-by: André Goddard Rosa <andre.goddard@...il.com>
Acked-by: Frederic Weisbecker <fweisbec@...il.com>
---
lib/vsprintf.c | 10 ++++++----
1 files changed, 6 insertions(+), 4 deletions(-)
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index 002f462..403e835 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -1445,13 +1445,15 @@ do { \
case FORMAT_TYPE_STR: {
const char *save_str = va_arg(args, char *);
size_t len;
+
if ((unsigned long)save_str > (unsigned long)-PAGE_SIZE
|| (unsigned long)save_str < PAGE_SIZE)
save_str = null_str;
- len = strlen(save_str);
- if (str + len + 1 < end)
- memcpy(str, save_str, len + 1);
- str += len + 1;
+ len = strlen(save_str) + 1;
+ if (str + len < end)
+ memcpy(str, save_str, len);
+ str += len;
+
break;
}
--
1.6.5.2.143.g8cc62.dirty
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists