/**
* sysfs_create_link - create symlink between two objects.
* @kobj: object whose directory we're creating the link in.
* @target: object we're pointing to.
* @name: name of the symlink.
*/
int sysfs_create_link(struct kobject * kobj, struct kobject * target, char * name)
{
struct dentry * dentry = kobj->dentry;
int error = -EEXIST;
BUG_ON(!kobj || !kobj->dentry || !name);
down(&dentry->d_inode->i_sem);
if (!sysfs_dirent_exist(dentry->d_fsdata, name))
error = sysfs_add_link(dentry, name, target);
up(&dentry->d_inode->i_sem);
return error;
}
int sysfs_add_file(struct dentry * dir, const struct attribute * attr, int type)
{
struct sysfs_dirent * parent_sd = dir->d_fsdata;
umode_t mode = (attr->mode & S_IALLUGO) | S_IFREG;
int error = -EEXIST;
mutex_lock(&dir->d_inode->i_mutex);
if (!sysfs_dirent_exist(parent_sd, attr->name))
error = sysfs_make_dirent(parent_sd, NULL, (void *)attr,
mode, type);
mutex_unlock(&dir->d_inode->i_mutex);
return error;
}