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net: tun: Convert to use sysfs_emit() APIs

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Follow the advice of the Documentation/filesystems/sysfs.rst and show()
should only use sysfs_emit() or sysfs_emit_at() when formatting the value
to be returned to user space.

Signed-off-by: Wang Yufen <wangyufen@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Wang Yufen 2022-09-28 19:49:43 +08:00 committed by David S. Miller
parent ae404c219d
commit aff3069954
1 changed files with 7 additions and 7 deletions
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14
drivers/net/tun.c
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@ -2664,7 +2664,7 @@ static ssize_t tun_flags_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct tun_struct *tun = netdev_priv(to_net_dev(dev));
return sprintf(buf, "0x%x\n", tun_flags(tun));
return sysfs_emit(buf, "0x%x\n", tun_flags(tun));
}
static ssize_t owner_show(struct device *dev, struct device_attribute *attr,
@ -2672,9 +2672,9 @@ static ssize_t owner_show(struct device *dev, struct device_attribute *attr,
{
struct tun_struct *tun = netdev_priv(to_net_dev(dev));
return uid_valid(tun->owner)?
sprintf(buf, "%u\n",
from_kuid_munged(current_user_ns(), tun->owner)):
sprintf(buf, "-1\n");
sysfs_emit(buf, "%u\n",
from_kuid_munged(current_user_ns(), tun->owner)) :
sysfs_emit(buf, "-1\n");
}
static ssize_t group_show(struct device *dev, struct device_attribute *attr,
@ -2682,9 +2682,9 @@ static ssize_t group_show(struct device *dev, struct device_attribute *attr,
{
struct tun_struct *tun = netdev_priv(to_net_dev(dev));
return gid_valid(tun->group) ?
sprintf(buf, "%u\n",
from_kgid_munged(current_user_ns(), tun->group)):
sprintf(buf, "-1\n");
sysfs_emit(buf, "%u\n",
from_kgid_munged(current_user_ns(), tun->group)) :
sysfs_emit(buf, "-1\n");
}
static DEVICE_ATTR_RO(tun_flags);