From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jaegeuk Kim Subject: [PATCH] libf2fs: avoid build warning Date: Mon, 31 Oct 2016 21:25:39 -0700 Message-ID: <20161101042539.32122-1-jaegeuk@kernel.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from sog-mx-4.v43.ch3.sourceforge.com ([172.29.43.194] helo=mx.sourceforge.net) by sfs-ml-2.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1c1Qdx-0007ZQ-2h for linux-f2fs-devel@lists.sourceforge.net; Tue, 01 Nov 2016 04:25:49 +0000 Received: from mail.kernel.org ([198.145.29.136]) by sog-mx-4.v43.ch3.sourceforge.com with esmtps (TLSv1:AES256-SHA:256) (Exim 4.76) id 1c1Qdw-0008KU-7X for linux-f2fs-devel@lists.sourceforge.net; Tue, 01 Nov 2016 04:25:49 +0000 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net To: linux-f2fs-devel@lists.sourceforge.net Cc: Jaegeuk Kim This avoids the below warnings. libf2fs_zoned.c:39:8: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(file, "%s", str); ^ libf2fs_zoned.c: In function 'f2fs_get_zone_blocks': libf2fs_zoned.c:72:8: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(file, "%s", str); ^ Signed-off-by: Jaegeuk Kim --- lib/libf2fs_zoned.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/lib/libf2fs_zoned.c b/lib/libf2fs_zoned.c index 4ef4f1d..93b48f1 100644 --- a/lib/libf2fs_zoned.c +++ b/lib/libf2fs_zoned.c @@ -26,6 +26,7 @@ void f2fs_get_zoned_model() { char str[128]; FILE *file; + int res; /* Check that this is a zoned block device */ snprintf(str, sizeof(str), @@ -36,9 +37,12 @@ void f2fs_get_zoned_model() goto not_zoned; memset(str, 0, sizeof(str)); - fscanf(file, "%s", str); + res = fscanf(file, "%s", str); fclose(file); + if (res != 1) + goto not_zoned; + if (strcmp(str, "host-aware") == 0) { c.zoned_model = F2FS_ZONED_HA; return; @@ -57,6 +61,7 @@ int f2fs_get_zone_blocks() uint64_t sectors; char str[128]; FILE *file; + int res; /* Get zone size */ c.zone_blocks = 0; @@ -69,9 +74,12 @@ int f2fs_get_zone_blocks() return -1; memset(str, 0, sizeof(str)); - fscanf(file, "%s", str); + res = fscanf(file, "%s", str); fclose(file); + if (res != 1) + return -1; + sectors = atol(str); if (!sectors) return -1; -- 2.8.3 ------------------------------------------------------------------------------ Developer Access Program for Intel Xeon Phi Processors Access to Intel Xeon Phi processor-based developer platforms. With one year of Intel Parallel Studio XE. Training and support from Colfax. Order your platform today. http://sdm.link/xeonphi