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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright 2023 Red Hat
*/
#include "pool-sysfs.h"
#include <linux/kstrtox.h>
#include "memory-alloc.h"
#include "string-utils.h"
#include "data-vio.h"
#include "dedupe.h"
#include "vdo.h"
struct pool_attribute {
struct attribute attr;
ssize_t (*show)(struct vdo *vdo, char *buf);
ssize_t (*store)(struct vdo *vdo, const char *value, size_t count);
};
static ssize_t vdo_pool_attr_show(struct kobject *directory, struct attribute *attr,
char *buf)
{
struct pool_attribute *pool_attr = container_of(attr, struct pool_attribute,
attr);
struct vdo *vdo = container_of(directory, struct vdo, vdo_directory);
if (pool_attr->show == NULL)
return -EINVAL;
return pool_attr->show(vdo, buf);
}
static ssize_t vdo_pool_attr_store(struct kobject *directory, struct attribute *attr,
const char *buf, size_t length)
{
struct pool_attribute *pool_attr = container_of(attr, struct pool_attribute,
attr);
struct vdo *vdo = container_of(directory, struct vdo, vdo_directory);
if (pool_attr->store == NULL)
return -EINVAL;
return pool_attr->store(vdo, buf, length);
}
static const struct sysfs_ops vdo_pool_sysfs_ops = {
.show = vdo_pool_attr_show,
.store = vdo_pool_attr_store,
};
static ssize_t pool_compressing_show(struct vdo *vdo, char *buf)
{
return sprintf(buf, "%s\n", (vdo_get_compressing(vdo) ? "1" : "0"));
}
static ssize_t pool_discards_active_show(struct vdo *vdo, char *buf)
{
return sprintf(buf, "%u\n",
get_data_vio_pool_active_discards(vdo->data_vio_pool));
}
static ssize_t pool_discards_limit_show(struct vdo *vdo, char *buf)
{
return sprintf(buf, "%u\n", get_data_vio_pool_discard_limit(vdo->data_vio_pool));
}
static ssize_t pool_discards_limit_store(struct vdo *vdo, const char *buf, size_t length)
{
unsigned int value;
int result;
if ((length > 12) || (kstrtouint(buf, 10, &value) < 0) || (value < 1))
return -EINVAL;
result = set_data_vio_pool_discard_limit(vdo->data_vio_pool, value);
if (result != VDO_SUCCESS)
return -EINVAL;
return length;
}
static ssize_t pool_discards_maximum_show(struct vdo *vdo, char *buf)
{
return sprintf(buf, "%u\n",
get_data_vio_pool_maximum_discards(vdo->data_vio_pool));
}
static ssize_t pool_instance_show(struct vdo *vdo, char *buf)
{
return sprintf(buf, "%u\n", vdo->instance);
}
static ssize_t pool_requests_active_show(struct vdo *vdo, char *buf)
{
return sprintf(buf, "%u\n",
get_data_vio_pool_active_requests(vdo->data_vio_pool));
}
static ssize_t pool_requests_limit_show(struct vdo *vdo, char *buf)
{
return sprintf(buf, "%u\n", get_data_vio_pool_request_limit(vdo->data_vio_pool));
}
static ssize_t pool_requests_maximum_show(struct vdo *vdo, char *buf)
{
return sprintf(buf, "%u\n",
get_data_vio_pool_maximum_requests(vdo->data_vio_pool));
}
static void vdo_pool_release(struct kobject *directory)
{
vdo_free(container_of(directory, struct vdo, vdo_directory));
}
static struct pool_attribute vdo_pool_compressing_attr = {
.attr = {
.name = "compressing",
.mode = 0444,
},
.show = pool_compressing_show,
};
static struct pool_attribute vdo_pool_discards_active_attr = {
.attr = {
.name = "discards_active",
.mode = 0444,
},
.show = pool_discards_active_show,
};
static struct pool_attribute vdo_pool_discards_limit_attr = {
.attr = {
.name = "discards_limit",
.mode = 0644,
},
.show = pool_discards_limit_show,
.store = pool_discards_limit_store,
};
static struct pool_attribute vdo_pool_discards_maximum_attr = {
.attr = {
.name = "discards_maximum",
.mode = 0444,
},
.show = pool_discards_maximum_show,
};
static struct pool_attribute vdo_pool_instance_attr = {
.attr = {
.name = "instance",
.mode = 0444,
},
.show = pool_instance_show,
};
static struct pool_attribute vdo_pool_requests_active_attr = {
.attr = {
.name = "requests_active",
.mode = 0444,
},
.show = pool_requests_active_show,
};
static struct pool_attribute vdo_pool_requests_limit_attr = {
.attr = {
.name = "requests_limit",
.mode = 0444,
},
.show = pool_requests_limit_show,
};
static struct pool_attribute vdo_pool_requests_maximum_attr = {
.attr = {
.name = "requests_maximum",
.mode = 0444,
},
.show = pool_requests_maximum_show,
};
static struct attribute *pool_attrs[] = {
&vdo_pool_compressing_attr.attr,
&vdo_pool_discards_active_attr.attr,
&vdo_pool_discards_limit_attr.attr,
&vdo_pool_discards_maximum_attr.attr,
&vdo_pool_instance_attr.attr,
&vdo_pool_requests_active_attr.attr,
&vdo_pool_requests_limit_attr.attr,
&vdo_pool_requests_maximum_attr.attr,
NULL,
};
ATTRIBUTE_GROUPS(pool);
const struct kobj_type vdo_directory_type = {
.release = vdo_pool_release,
.sysfs_ops = &vdo_pool_sysfs_ops,
.default_groups = pool_groups,
};
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