Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
block: use sysfs_emit in sysfs show functions
Replace sprintf() with sysfs_emit() in sysfs show functions.
sysfs_emit() is preferred for formatting sysfs output because it
provides safer bounds checking.
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Link: https://patch.msgid.link/20260402164958.894879-4-thorsten.blum@linux.dev
Signed-off-by: Jens Axboe <axboe@kernel.dk>
authored by
Thorsten Blum
and committed by
Jens Axboe
a175ee82
4e56428e
+6
-5
+6
-5
block/partitions/core.c
+6
-5
block/partitions/core.c
···
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#include <linux/major.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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#include <linux/sysfs.h>
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#include <linux/ctype.h>
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#include <linux/vmalloc.h>
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#include <linux/raid/detect.h>
···
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static ssize_t part_partition_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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return sprintf(buf, "%d\n", bdev_partno(dev_to_bdev(dev)));
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return sysfs_emit(buf, "%d\n", bdev_partno(dev_to_bdev(dev)));
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}
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static ssize_t part_start_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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return sprintf(buf, "%llu\n", dev_to_bdev(dev)->bd_start_sect);
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return sysfs_emit(buf, "%llu\n", dev_to_bdev(dev)->bd_start_sect);
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}
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static ssize_t part_ro_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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return sprintf(buf, "%d\n", bdev_read_only(dev_to_bdev(dev)));
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return sysfs_emit(buf, "%d\n", bdev_read_only(dev_to_bdev(dev)));
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}
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static ssize_t part_alignment_offset_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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return sprintf(buf, "%u\n", bdev_alignment_offset(dev_to_bdev(dev)));
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return sysfs_emit(buf, "%u\n", bdev_alignment_offset(dev_to_bdev(dev)));
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}
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static ssize_t part_discard_alignment_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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return sprintf(buf, "%u\n", bdev_discard_alignment(dev_to_bdev(dev)));
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return sysfs_emit(buf, "%u\n", bdev_discard_alignment(dev_to_bdev(dev)));
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}
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static DEVICE_ATTR(partition, 0444, part_partition_show, NULL);