static int create_files(struct sysfs_dirent *dir_sd, struct kobject *kobj,
const struct attribute_group *grp, int update)
{
struct attribute *const* attr;
int error = 0, i;
for (i = 0, attr = grp->attrs; *attr && !error; i++, attr++) {
umode_t mode = 0;
if (update)
sysfs_hash_and_remove(dir_sd, NULL, (*attr)->name);
if (grp->is_visible) {
mode = grp->is_visible(kobj, *attr, i);
if (!mode)
continue;
}
error = sysfs_add_file_mode(dir_sd, *attr, SYSFS_KOBJ_ATTR,
(*attr)->mode | mode);
if (unlikely(error))
break;
}
if (error)
remove_files(dir_sd, kobj, grp);
return error;
}
static int create_files(struct sysfs_dirent *dir_sd, struct kobject *kobj,
const struct attribute_group *grp, int update)
{
struct attribute *const* attr;
int error = 0, i;
for (i = 0, attr = grp->attrs; *attr && !error; i++, attr++) {
mode_t mode = 0;
/* in update mode, we're changing the permissions or
* visibility. Do this by first removing then
* re-adding (if required) the file */
if (update)
sysfs_hash_and_remove(dir_sd, (*attr)->name);
if (grp->is_visible) {
mode = grp->is_visible(kobj, *attr, i);
if (!mode)
continue;
}
error = sysfs_add_file_mode(dir_sd, *attr, SYSFS_KOBJ_ATTR,
(*attr)->mode | mode);
if (unlikely(error))
break;
}
if (error)
remove_files(dir_sd, kobj, grp);
return error;
}
static void remove_files(struct sysfs_dirent *dir_sd,
const struct attribute_group *grp)
{
struct attribute *const* attr;
for (attr = grp->attrs; *attr; attr++)
sysfs_hash_and_remove(dir_sd, (*attr)->name);
}
static void remove_files(struct sysfs_dirent *dir_sd, struct kobject *kobj,
const struct attribute_group *grp)
{
struct attribute *const* attr;
int i;
for (i = 0, attr = grp->attrs; *attr; i++, attr++)
sysfs_hash_and_remove(dir_sd, NULL, (*attr)->name);
}
void sysfs_remove_bin_file(struct kobject * kobj, struct bin_attribute * attr)
{
if (sysfs_hash_and_remove(kobj->dentry, attr->attr.name) < 0) {
printk(KERN_ERR "%s: "
"bad dentry or inode or no such file: \"%s\"\n",
__FUNCTION__, attr->attr.name);
dump_stack();
}
}
/**
* sysfs_remove_link_from_group - remove a symlink from an attribute group.
* @kobj: The kobject containing the group.
* @group_name: The name of the group.
* @link_name: The name of the symlink to remove.
*/
void sysfs_remove_link_from_group(struct kobject *kobj, const char *group_name,
const char *link_name)
{
struct sysfs_dirent *dir_sd;
dir_sd = sysfs_get_dirent(kobj->sd, NULL, group_name);
if (dir_sd) {
sysfs_hash_and_remove(dir_sd, NULL, link_name);
sysfs_put(dir_sd);
}
}
/**
* sysfs_remove_file_from_group - remove an attribute file from a group.
* @kobj: object we're acting for.
* @attr: attribute descriptor.
* @group: group name.
*/
void sysfs_remove_file_from_group(struct kobject *kobj,
const struct attribute *attr, const char *group)
{
struct sysfs_dirent *dir_sd;
dir_sd = sysfs_get_dirent(kobj->sd, group);
if (dir_sd) {
sysfs_hash_and_remove(dir_sd, attr->name);
sysfs_put(dir_sd);
}
}
void sysfs_remove_link(struct kobject * kobj, const char * name)
{
struct sysfs_dirent *parent_sd = NULL;
if (!kobj)
parent_sd = &sysfs_root;
else
parent_sd = kobj->sd;
sysfs_hash_and_remove(parent_sd, name);
}
/**
* sysfs_unmerge_group - remove files from a pre-existing attribute group.
* @kobj: The kobject containing the group.
* @grp: The files to remove and the attribute group they belong to.
*/
void sysfs_unmerge_group(struct kobject *kobj,
const struct attribute_group *grp)
{
struct sysfs_dirent *dir_sd;
struct attribute *const *attr;
dir_sd = sysfs_get_dirent(kobj->sd, NULL, grp->name);
if (dir_sd) {
for (attr = grp->attrs; *attr; ++attr)
sysfs_hash_and_remove(dir_sd, NULL, (*attr)->name);
sysfs_put(dir_sd);
}
}
static void remove_files(struct sysfs_dirent *dir_sd, struct kobject *kobj,
const struct attribute_group *grp)
{
struct attribute *const* attr;
struct bin_attribute *const* bin_attr;
if (grp->attrs)
for (attr = grp->attrs; *attr; attr++)
sysfs_hash_and_remove(dir_sd, NULL, (*attr)->name);
if (grp->bin_attrs)
for (bin_attr = grp->bin_attrs; *bin_attr; bin_attr++)
sysfs_remove_bin_file(kobj, *bin_attr);
}
/**
* sysfs_merge_group - merge files into a pre-existing attribute group.
* @kobj: The kobject containing the group.
* @grp: The files to create and the attribute group they belong to.
*
* This function returns an error if the group doesn't exist or any of the
* files already exist in that group, in which case none of the new files
* are created.
*/
int sysfs_merge_group(struct kobject *kobj,
const struct attribute_group *grp)
{
struct sysfs_dirent *dir_sd;
int error = 0;
struct attribute *const *attr;
int i;
dir_sd = sysfs_get_dirent(kobj->sd, NULL, grp->name);
if (!dir_sd)
return -ENOENT;
for ((i = 0, attr = grp->attrs); *attr && !error; (++i, ++attr))
error = sysfs_add_file(dir_sd, *attr, SYSFS_KOBJ_ATTR);
if (error) {
while (--i >= 0)
sysfs_hash_and_remove(dir_sd, NULL, (*--attr)->name);
}
sysfs_put(dir_sd);
return error;
}
int sysfs_remove_bin_file(struct kobject * kobj, struct bin_attribute * attr)
{
sysfs_hash_and_remove(kobj->dentry,attr->attr.name);
return 0;
}
void sysfs_remove_bin_file(struct kobject * kobj, struct bin_attribute * attr)
{
sysfs_hash_and_remove(kobj->sd, attr->attr.name);
}
void sysfs_remove_file(struct kobject * kobj, const struct attribute * attr)
{
sysfs_hash_and_remove(kobj->sd, attr->name);
}
void sysfs_remove_link(struct kobject * kobj, char * name)
{
sysfs_hash_and_remove(kobj->dentry,name);
}
void sysfs_remove_file(struct kobject * kobj, const struct attribute * attr)
{
if (!ve_sysfs_alowed())
return;
sysfs_hash_and_remove(kobj->sd, attr->name);
}
