linux-kernel - [RFC][PATCH 1/8] Fix resource groups parsing, while assigning shares

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Date:	Fri, 10 Nov 2006 01:05:32 +0530
From:	Balbir Singh <balbir@...ibm.com>
To:	Linux MM <linux-mm@...ck.org>
Cc:	dev@...nvz.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	ckrm-tech@...ts.sourceforge.net, haveblue@...ibm.com,
	rohitseth@...gle.com, Balbir Singh <balbir@...ibm.com>
Subject: [RFC][PATCH 1/8] Fix resource groups parsing, while assigning shares



echo adds a "\n" to the end of a string. When this string is copied from
user space, we need to remove it, so that match_token() can parse
the user space string correctly

Signed-off-by: Balbir Singh <balbir@...ibm.com>
---

 kernel/res_group/rgcs.c |    6 ++++++
 1 file changed, 6 insertions(+)

diff -puN kernel/res_group/rgcs.c~container-res-groups-fix-parsing kernel/res_group/rgcs.c
--- linux-2.6.19-rc2/kernel/res_group/rgcs.c~container-res-groups-fix-parsing	2006-11-09 23:08:10.000000000 +0530
+++ linux-2.6.19-rc2-balbir/kernel/res_group/rgcs.c	2006-11-09 23:08:10.000000000 +0530
@@ -241,6 +241,12 @@ ssize_t res_group_file_write(struct cont
 	}
 	buf[nbytes] = 0;	/* nul-terminate */
 
+	/*
+	 * Ignore "\n". It might come in from echo(1)
+	 */
+	if (buf[nbytes - 1] == '\n')
+		buf[nbytes - 1] = 0;
+
 	container_manage_lock();
 
 	if (container_is_removed(cont)) {
_

-- 

	Balbir Singh,
	Linux Technology Center,
	IBM Software Labs
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