linux-kernel - [PATCH 01/10] uml: cow_user.c warning corrections

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Date:	Thu, 21 Jul 2011 11:18:25 +0200
From:	Richard Weinberger <richard@....at>
To:	akpm@...ux-foundation.org
Cc:	linux-kernel@...r.kernel.org,
	user-mode-linux-devel@...ts.sourceforge.net,
	Vitaliy Ivanov <vitalivanov@...il.com>,
	Richard Weinberger <richard@....at>
Subject: [PATCH 01/10] uml: cow_user.c warning corrections

From: Vitaliy Ivanov <vitalivanov@...il.com>

arch/um/drivers/cow_user.c: In function ‘absolutize’:
arch/um/drivers/cow_user.c:189:7: warning: ignoring return value of ‘chdir’, declared with attribute warn_unused_result

Signed-off-by: Vitaliy Ivanov <vitalivanov@...il.com>
[richard@....at: happens only with -D_FORTIFY_SOURCE=2]
Signed-off-by: Richard Weinberger <richard@....at>
---
 arch/um/drivers/cow_user.c |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/arch/um/drivers/cow_user.c b/arch/um/drivers/cow_user.c
index 93f227a..9cbb426 100644
--- a/arch/um/drivers/cow_user.c
+++ b/arch/um/drivers/cow_user.c
@@ -186,7 +186,11 @@ static int absolutize(char *to, int size, char *from)
 		strcat(to, "/");
 		strcat(to, from);
 	}
-	chdir(save_cwd);
+	if (chdir(save_cwd)) {
+		cow_printf("absolutize : Can't cd to '%s' - "
+			   "errno = %d\n", save_cwd, errno);
+		return -1;
+	}
 	return 0;
 }
 
-- 
1.7.6

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