From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-170.mta0.migadu.com (out-170.mta0.migadu.com [91.218.175.170]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5F35F26B2D2 for ; Fri, 27 Feb 2026 00:42:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.170 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772152958; cv=none; b=lAUyfKrRZusP6B5O7dVCyX9wfM26FsGxyvYj3Kid+BQyBuGbl1CovKdvHISX6Xx0Jh7JXXZI55gTHVvbh/32rZibm2Tqe5lM2uR7DjU0yuKR6Sh7YCujQFATOcEjWnbb8d0XdW/k99i0WSkp/QGXmwRto6+QM3eeeOOSGO8JXsY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772152958; c=relaxed/simple; bh=TYinvOyAjh2H/NtbHNGruW0zLxwpOsVD1XVfAyL342U=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=Kz7Q+1F9768pCADAk9dgxCeTwut2J4s2Hom5GCra0727RWgy2c7yA9CEI531SxYjM2jtn96gYPacYvJCcZuaep3zVxbB5i8d9f/dvCHCKPapX8s1feyTPkwWhr9iVSO1790lcXX0xmM9G40gXawgPZRbudr3JIMgKqIaBI3wecM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=Lrglvvj0; arc=none smtp.client-ip=91.218.175.170 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="Lrglvvj0" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1772152954; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=W+Z2Aj6ubZCwuXCsOc2jL2mHBymXCjgJw1vuy+9Bbvc=; b=Lrglvvj043xQtPxm+LXcX3mNpvIx1/xNB11tPybv2hd9/ztqLWoxu3qtnmeOEve0PJJU3n R6l/dbaZ6rXgi4giSoxBO86tL02lmIcbpPfWveNRTvlGtYN8IIhJQcwYmkX0vNMXvGR+2O MJtndsWXYUA3MHM6x/Jrrru/0Xl0L38= From: Thorsten Blum To: Jens Axboe , Thorsten Blum , Kees Cook Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] block: Use sysfs_emit in sysfs show functions Date: Fri, 27 Feb 2026 01:42:25 +0100 Message-ID: <20260227004227.798808-1-thorsten.blum@linux.dev> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT Replace sprintf() with sysfs_emit() in sysfs show functions. sysfs_emit() is preferred for formatting sysfs output because it provides safer bounds checking. No functional changes. Signed-off-by: Thorsten Blum --- block/partitions/core.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/block/partitions/core.c b/block/partitions/core.c index 079057ab535a..7148d5bc37d9 100644 --- a/block/partitions/core.c +++ b/block/partitions/core.c @@ -8,6 +8,7 @@ #include #include #include +#include #include #include #include @@ -177,31 +178,31 @@ static struct parsed_partitions *check_partition(struct gendisk *hd) static ssize_t part_partition_show(struct device *dev, struct device_attribute *attr, char *buf) { - return sprintf(buf, "%d\n", bdev_partno(dev_to_bdev(dev))); + return sysfs_emit(buf, "%d\n", bdev_partno(dev_to_bdev(dev))); } static ssize_t part_start_show(struct device *dev, struct device_attribute *attr, char *buf) { - return sprintf(buf, "%llu\n", dev_to_bdev(dev)->bd_start_sect); + return sysfs_emit(buf, "%llu\n", dev_to_bdev(dev)->bd_start_sect); } static ssize_t part_ro_show(struct device *dev, struct device_attribute *attr, char *buf) { - return sprintf(buf, "%d\n", bdev_read_only(dev_to_bdev(dev))); + return sysfs_emit(buf, "%d\n", bdev_read_only(dev_to_bdev(dev))); } static ssize_t part_alignment_offset_show(struct device *dev, struct device_attribute *attr, char *buf) { - return sprintf(buf, "%u\n", bdev_alignment_offset(dev_to_bdev(dev))); + return sysfs_emit(buf, "%u\n", bdev_alignment_offset(dev_to_bdev(dev))); } static ssize_t part_discard_alignment_show(struct device *dev, struct device_attribute *attr, char *buf) { - return sprintf(buf, "%u\n", bdev_discard_alignment(dev_to_bdev(dev))); + return sysfs_emit(buf, "%u\n", bdev_discard_alignment(dev_to_bdev(dev))); } static DEVICE_ATTR(partition, 0444, part_partition_show, NULL); -- Thorsten Blum GPG: 1D60 735E 8AEF 3BE4 73B6 9D84 7336 78FD 8DFE EAD4