linux-kernel - [PATCH] argv_split: allow argv_split to handle NULL pointer in argcp parameter gracefully

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Message-ID: <20070731164608.GB28333@hmsreliant.homelinux.net>
Date:	Tue, 31 Jul 2007 12:46:08 -0400
From:	Neil Horman <nhorman@...driver.com>
To:	akpm@...ux-foundation.org, jeremy@...p.org,
	linux-kernel@...r.kernel.org
Cc:	nhorman@...driver.com
Subject: [PATCH] argv_split: allow argv_split to handle NULL pointer in argcp parameter gracefully

As Jeremy and I had discussed in a previous thread, it would be nice if the
argv_split library function could gracefully handle a NULL pointer in the argcp
parameter, so as to allow functions using it that did not care about the value
of argc to not have to declare a useless variable.  This patch accomplishes
that.  Tested by me, with successful results.

Thanks & Regards
Neil

Signed-off-by: Neil Horman <nhorman@...driver.com>


 argv_split.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)


diff --git a/lib/argv_split.c b/lib/argv_split.c
index 4096ed4..fad6ce4 100644
--- a/lib/argv_split.c
+++ b/lib/argv_split.c
@@ -75,7 +75,9 @@ char **argv_split(gfp_t gfp, const char *str, int *argcp)
 	if (argv == NULL)
 		goto out;
 
-	*argcp = argc;
+	if (argcp)
+		*argcp = argc;
+
 	argvp = argv;
 
 	while (*str) {
-- 
/***************************************************
 *Neil Horman
 *Software Engineer
 *Red Hat, Inc.
 *nhorman@...driver.com
 *gpg keyid: 1024D / 0x92A74FA1
 *http://pgp.mit.edu
 ***************************************************/
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