From 5a242d8547bdc5802d1e1200a85e69afc3c2d74e Mon Sep 17 00:00:00 2001 From: Nguyen Dinh Phi Date: Fri, 4 Mar 2022 02:36:18 +0800 Subject: [PATCH] samples/kobject: Use sysfs_emit instead of sprintf sysfs_emit() is preferred over sprintf() when formatting the value to be returned to user space in show() functions, because it knows about sysfs buffer specifics and has sanity checks. Signed-off-by: Nguyen Dinh Phi Link: https://lore.kernel.org/r/20220303183618.1342358-1-phind.uet@gmail.com Signed-off-by: Greg Kroah-Hartman --- samples/kobject/kobject-example.c | 4 ++-- samples/kobject/kset-example.c | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/samples/kobject/kobject-example.c b/samples/kobject/kobject-example.c index 9e383fdbaa00..96678ed73216 100644 --- a/samples/kobject/kobject-example.c +++ b/samples/kobject/kobject-example.c @@ -28,7 +28,7 @@ static int bar; static ssize_t foo_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { - return sprintf(buf, "%d\n", foo); + return sysfs_emit(buf, "%d\n", foo); } static ssize_t foo_store(struct kobject *kobj, struct kobj_attribute *attr, @@ -60,7 +60,7 @@ static ssize_t b_show(struct kobject *kobj, struct kobj_attribute *attr, var = baz; else var = bar; - return sprintf(buf, "%d\n", var); + return sysfs_emit(buf, "%d\n", var); } static ssize_t b_store(struct kobject *kobj, struct kobj_attribute *attr, diff --git a/samples/kobject/kset-example.c b/samples/kobject/kset-example.c index c8010f126808..52f1acabd479 100644 --- a/samples/kobject/kset-example.c +++ b/samples/kobject/kset-example.c @@ -112,7 +112,7 @@ static void foo_release(struct kobject *kobj) static ssize_t foo_show(struct foo_obj *foo_obj, struct foo_attribute *attr, char *buf) { - return sprintf(buf, "%d\n", foo_obj->foo); + return sysfs_emit(buf, "%d\n", foo_obj->foo); } static ssize_t foo_store(struct foo_obj *foo_obj, struct foo_attribute *attr, @@ -144,7 +144,7 @@ static ssize_t b_show(struct foo_obj *foo_obj, struct foo_attribute *attr, var = foo_obj->baz; else var = foo_obj->bar; - return sprintf(buf, "%d\n", var); + return sysfs_emit(buf, "%d\n", var); } static ssize_t b_store(struct foo_obj *foo_obj, struct foo_attribute *attr,