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Message-ID: <1420564837.2652.33.camel@perches.com>
Date: Tue, 06 Jan 2015 09:20:37 -0800
From: Joe Perches <joe@...ches.com>
To: Mark Salyzyn <salyzyn@...roid.com>
Cc: linux-kernel@...r.kernel.org, Anton Vorontsov <anton@...msg.org>,
Colin Cross <ccross@...roid.com>,
Kees Cook <keescook@...omium.org>,
Tony Luck <tony.luck@...el.com>
Subject: Re: [PATCH 1/3] pstore: use snprintf
On Tue, 2015-01-06 at 09:15 -0800, Mark Salyzyn wrote:
> No guarantees that the names will not exceed the
> name buffer with future adjustments.
[]
> diff --git a/fs/pstore/inode.c b/fs/pstore/inode.c
[]
> @@ -338,32 +338,34 @@ int pstore_mkfile(enum pstore_type_id type, char *psname, u64 id, int count,
>
> switch (type) {
> case PSTORE_TYPE_DMESG:
> - sprintf(name, "dmesg-%s-%lld%s", psname, id,
> + snprintf(name, sizeof(name), "dmesg-%s-%lld%s", psname, id,
> compressed ? ".enc.z" : "");
scnprintf to ensure null termination?
(and maybe better written like)
scnprintf(name, sizeof(name), "dmesg-%s-%lld%s",
psname, id, compressed ? ".enc.z" : "");
--
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