627 lines
16 KiB
C
627 lines
16 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* Copyright (C) 2022, Alibaba Cloud
|
|
* Copyright (C) 2022, Bytedance Inc. All rights reserved.
|
|
*/
|
|
#include <linux/pseudo_fs.h>
|
|
#include <linux/fscache.h>
|
|
#include "internal.h"
|
|
|
|
static DEFINE_MUTEX(erofs_domain_list_lock);
|
|
static DEFINE_MUTEX(erofs_domain_cookies_lock);
|
|
static LIST_HEAD(erofs_domain_list);
|
|
static LIST_HEAD(erofs_domain_cookies_list);
|
|
static struct vfsmount *erofs_pseudo_mnt;
|
|
|
|
static int erofs_anon_init_fs_context(struct fs_context *fc)
|
|
{
|
|
return init_pseudo(fc, EROFS_SUPER_MAGIC) ? 0 : -ENOMEM;
|
|
}
|
|
|
|
static struct file_system_type erofs_anon_fs_type = {
|
|
.owner = THIS_MODULE,
|
|
.name = "pseudo_erofs",
|
|
.init_fs_context = erofs_anon_init_fs_context,
|
|
.kill_sb = kill_anon_super,
|
|
};
|
|
|
|
struct erofs_fscache_request {
|
|
struct erofs_fscache_request *primary;
|
|
struct netfs_cache_resources cache_resources;
|
|
struct address_space *mapping; /* The mapping being accessed */
|
|
loff_t start; /* Start position */
|
|
size_t len; /* Length of the request */
|
|
size_t submitted; /* Length of submitted */
|
|
short error; /* 0 or error that occurred */
|
|
refcount_t ref;
|
|
};
|
|
|
|
static struct erofs_fscache_request *erofs_fscache_req_alloc(struct address_space *mapping,
|
|
loff_t start, size_t len)
|
|
{
|
|
struct erofs_fscache_request *req;
|
|
|
|
req = kzalloc(sizeof(struct erofs_fscache_request), GFP_KERNEL);
|
|
if (!req)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
req->mapping = mapping;
|
|
req->start = start;
|
|
req->len = len;
|
|
refcount_set(&req->ref, 1);
|
|
|
|
return req;
|
|
}
|
|
|
|
static struct erofs_fscache_request *erofs_fscache_req_chain(struct erofs_fscache_request *primary,
|
|
size_t len)
|
|
{
|
|
struct erofs_fscache_request *req;
|
|
|
|
/* use primary request for the first submission */
|
|
if (!primary->submitted) {
|
|
refcount_inc(&primary->ref);
|
|
return primary;
|
|
}
|
|
|
|
req = erofs_fscache_req_alloc(primary->mapping,
|
|
primary->start + primary->submitted, len);
|
|
if (!IS_ERR(req)) {
|
|
req->primary = primary;
|
|
refcount_inc(&primary->ref);
|
|
}
|
|
return req;
|
|
}
|
|
|
|
static void erofs_fscache_req_complete(struct erofs_fscache_request *req)
|
|
{
|
|
struct folio *folio;
|
|
bool failed = req->error;
|
|
pgoff_t start_page = req->start / PAGE_SIZE;
|
|
pgoff_t last_page = ((req->start + req->len) / PAGE_SIZE) - 1;
|
|
|
|
XA_STATE(xas, &req->mapping->i_pages, start_page);
|
|
|
|
rcu_read_lock();
|
|
xas_for_each(&xas, folio, last_page) {
|
|
if (xas_retry(&xas, folio))
|
|
continue;
|
|
if (!failed)
|
|
folio_mark_uptodate(folio);
|
|
folio_unlock(folio);
|
|
}
|
|
rcu_read_unlock();
|
|
}
|
|
|
|
static void erofs_fscache_req_put(struct erofs_fscache_request *req)
|
|
{
|
|
if (refcount_dec_and_test(&req->ref)) {
|
|
if (req->cache_resources.ops)
|
|
req->cache_resources.ops->end_operation(&req->cache_resources);
|
|
if (!req->primary)
|
|
erofs_fscache_req_complete(req);
|
|
else
|
|
erofs_fscache_req_put(req->primary);
|
|
kfree(req);
|
|
}
|
|
}
|
|
|
|
static void erofs_fscache_subreq_complete(void *priv,
|
|
ssize_t transferred_or_error, bool was_async)
|
|
{
|
|
struct erofs_fscache_request *req = priv;
|
|
|
|
if (IS_ERR_VALUE(transferred_or_error)) {
|
|
if (req->primary)
|
|
req->primary->error = transferred_or_error;
|
|
else
|
|
req->error = transferred_or_error;
|
|
}
|
|
erofs_fscache_req_put(req);
|
|
}
|
|
|
|
/*
|
|
* Read data from fscache (cookie, pstart, len), and fill the read data into
|
|
* page cache described by (req->mapping, lstart, len). @pstart describeis the
|
|
* start physical address in the cache file.
|
|
*/
|
|
static int erofs_fscache_read_folios_async(struct fscache_cookie *cookie,
|
|
struct erofs_fscache_request *req, loff_t pstart, size_t len)
|
|
{
|
|
enum netfs_io_source source;
|
|
struct super_block *sb = req->mapping->host->i_sb;
|
|
struct netfs_cache_resources *cres = &req->cache_resources;
|
|
struct iov_iter iter;
|
|
loff_t lstart = req->start + req->submitted;
|
|
size_t done = 0;
|
|
int ret;
|
|
|
|
DBG_BUGON(len > req->len - req->submitted);
|
|
|
|
ret = fscache_begin_read_operation(cres, cookie);
|
|
if (ret)
|
|
return ret;
|
|
|
|
while (done < len) {
|
|
loff_t sstart = pstart + done;
|
|
size_t slen = len - done;
|
|
unsigned long flags = 1 << NETFS_SREQ_ONDEMAND;
|
|
|
|
source = cres->ops->prepare_ondemand_read(cres,
|
|
sstart, &slen, LLONG_MAX, &flags, 0);
|
|
if (WARN_ON(slen == 0))
|
|
source = NETFS_INVALID_READ;
|
|
if (source != NETFS_READ_FROM_CACHE) {
|
|
erofs_err(sb, "failed to fscache prepare_read (source %d)", source);
|
|
return -EIO;
|
|
}
|
|
|
|
refcount_inc(&req->ref);
|
|
iov_iter_xarray(&iter, ITER_DEST, &req->mapping->i_pages,
|
|
lstart + done, slen);
|
|
|
|
ret = fscache_read(cres, sstart, &iter, NETFS_READ_HOLE_FAIL,
|
|
erofs_fscache_subreq_complete, req);
|
|
if (ret == -EIOCBQUEUED)
|
|
ret = 0;
|
|
if (ret) {
|
|
erofs_err(sb, "failed to fscache_read (ret %d)", ret);
|
|
return ret;
|
|
}
|
|
|
|
done += slen;
|
|
}
|
|
DBG_BUGON(done != len);
|
|
return 0;
|
|
}
|
|
|
|
static int erofs_fscache_meta_read_folio(struct file *data, struct folio *folio)
|
|
{
|
|
int ret;
|
|
struct erofs_fscache *ctx = folio_mapping(folio)->host->i_private;
|
|
struct erofs_fscache_request *req;
|
|
|
|
req = erofs_fscache_req_alloc(folio_mapping(folio),
|
|
folio_pos(folio), folio_size(folio));
|
|
if (IS_ERR(req)) {
|
|
folio_unlock(folio);
|
|
return PTR_ERR(req);
|
|
}
|
|
|
|
ret = erofs_fscache_read_folios_async(ctx->cookie, req,
|
|
folio_pos(folio), folio_size(folio));
|
|
if (ret)
|
|
req->error = ret;
|
|
|
|
erofs_fscache_req_put(req);
|
|
return ret;
|
|
}
|
|
|
|
static int erofs_fscache_data_read_slice(struct erofs_fscache_request *primary)
|
|
{
|
|
struct address_space *mapping = primary->mapping;
|
|
struct inode *inode = mapping->host;
|
|
struct super_block *sb = inode->i_sb;
|
|
struct erofs_fscache_request *req;
|
|
struct erofs_map_blocks map;
|
|
struct erofs_map_dev mdev;
|
|
struct iov_iter iter;
|
|
loff_t pos = primary->start + primary->submitted;
|
|
size_t count;
|
|
int ret;
|
|
|
|
map.m_la = pos;
|
|
ret = erofs_map_blocks(inode, &map);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (map.m_flags & EROFS_MAP_META) {
|
|
struct erofs_buf buf = __EROFS_BUF_INITIALIZER;
|
|
erofs_blk_t blknr;
|
|
size_t offset, size;
|
|
void *src;
|
|
|
|
/* For tail packing layout, the offset may be non-zero. */
|
|
offset = erofs_blkoff(sb, map.m_pa);
|
|
blknr = erofs_blknr(sb, map.m_pa);
|
|
size = map.m_llen;
|
|
|
|
src = erofs_read_metabuf(&buf, sb, blknr, EROFS_KMAP);
|
|
if (IS_ERR(src))
|
|
return PTR_ERR(src);
|
|
|
|
iov_iter_xarray(&iter, ITER_DEST, &mapping->i_pages, pos, PAGE_SIZE);
|
|
if (copy_to_iter(src + offset, size, &iter) != size) {
|
|
erofs_put_metabuf(&buf);
|
|
return -EFAULT;
|
|
}
|
|
iov_iter_zero(PAGE_SIZE - size, &iter);
|
|
erofs_put_metabuf(&buf);
|
|
primary->submitted += PAGE_SIZE;
|
|
return 0;
|
|
}
|
|
|
|
count = primary->len - primary->submitted;
|
|
if (!(map.m_flags & EROFS_MAP_MAPPED)) {
|
|
iov_iter_xarray(&iter, ITER_DEST, &mapping->i_pages, pos, count);
|
|
iov_iter_zero(count, &iter);
|
|
primary->submitted += count;
|
|
return 0;
|
|
}
|
|
|
|
count = min_t(size_t, map.m_llen - (pos - map.m_la), count);
|
|
DBG_BUGON(!count || count % PAGE_SIZE);
|
|
|
|
mdev = (struct erofs_map_dev) {
|
|
.m_deviceid = map.m_deviceid,
|
|
.m_pa = map.m_pa,
|
|
};
|
|
ret = erofs_map_dev(sb, &mdev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
req = erofs_fscache_req_chain(primary, count);
|
|
if (IS_ERR(req))
|
|
return PTR_ERR(req);
|
|
|
|
ret = erofs_fscache_read_folios_async(mdev.m_fscache->cookie,
|
|
req, mdev.m_pa + (pos - map.m_la), count);
|
|
erofs_fscache_req_put(req);
|
|
primary->submitted += count;
|
|
return ret;
|
|
}
|
|
|
|
static int erofs_fscache_data_read(struct erofs_fscache_request *req)
|
|
{
|
|
int ret;
|
|
|
|
do {
|
|
ret = erofs_fscache_data_read_slice(req);
|
|
if (ret)
|
|
req->error = ret;
|
|
} while (!ret && req->submitted < req->len);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int erofs_fscache_read_folio(struct file *file, struct folio *folio)
|
|
{
|
|
struct erofs_fscache_request *req;
|
|
int ret;
|
|
|
|
req = erofs_fscache_req_alloc(folio_mapping(folio),
|
|
folio_pos(folio), folio_size(folio));
|
|
if (IS_ERR(req)) {
|
|
folio_unlock(folio);
|
|
return PTR_ERR(req);
|
|
}
|
|
|
|
ret = erofs_fscache_data_read(req);
|
|
erofs_fscache_req_put(req);
|
|
return ret;
|
|
}
|
|
|
|
static void erofs_fscache_readahead(struct readahead_control *rac)
|
|
{
|
|
struct erofs_fscache_request *req;
|
|
|
|
if (!readahead_count(rac))
|
|
return;
|
|
|
|
req = erofs_fscache_req_alloc(rac->mapping,
|
|
readahead_pos(rac), readahead_length(rac));
|
|
if (IS_ERR(req))
|
|
return;
|
|
|
|
/* The request completion will drop refs on the folios. */
|
|
while (readahead_folio(rac))
|
|
;
|
|
|
|
erofs_fscache_data_read(req);
|
|
erofs_fscache_req_put(req);
|
|
}
|
|
|
|
static const struct address_space_operations erofs_fscache_meta_aops = {
|
|
.read_folio = erofs_fscache_meta_read_folio,
|
|
};
|
|
|
|
const struct address_space_operations erofs_fscache_access_aops = {
|
|
.read_folio = erofs_fscache_read_folio,
|
|
.readahead = erofs_fscache_readahead,
|
|
};
|
|
|
|
static void erofs_fscache_domain_put(struct erofs_domain *domain)
|
|
{
|
|
mutex_lock(&erofs_domain_list_lock);
|
|
if (refcount_dec_and_test(&domain->ref)) {
|
|
list_del(&domain->list);
|
|
if (list_empty(&erofs_domain_list)) {
|
|
kern_unmount(erofs_pseudo_mnt);
|
|
erofs_pseudo_mnt = NULL;
|
|
}
|
|
fscache_relinquish_volume(domain->volume, NULL, false);
|
|
mutex_unlock(&erofs_domain_list_lock);
|
|
kfree(domain->domain_id);
|
|
kfree(domain);
|
|
return;
|
|
}
|
|
mutex_unlock(&erofs_domain_list_lock);
|
|
}
|
|
|
|
static int erofs_fscache_register_volume(struct super_block *sb)
|
|
{
|
|
struct erofs_sb_info *sbi = EROFS_SB(sb);
|
|
char *domain_id = sbi->domain_id;
|
|
struct fscache_volume *volume;
|
|
char *name;
|
|
int ret = 0;
|
|
|
|
name = kasprintf(GFP_KERNEL, "erofs,%s",
|
|
domain_id ? domain_id : sbi->fsid);
|
|
if (!name)
|
|
return -ENOMEM;
|
|
|
|
volume = fscache_acquire_volume(name, NULL, NULL, 0);
|
|
if (IS_ERR_OR_NULL(volume)) {
|
|
erofs_err(sb, "failed to register volume for %s", name);
|
|
ret = volume ? PTR_ERR(volume) : -EOPNOTSUPP;
|
|
volume = NULL;
|
|
}
|
|
|
|
sbi->volume = volume;
|
|
kfree(name);
|
|
return ret;
|
|
}
|
|
|
|
static int erofs_fscache_init_domain(struct super_block *sb)
|
|
{
|
|
int err;
|
|
struct erofs_domain *domain;
|
|
struct erofs_sb_info *sbi = EROFS_SB(sb);
|
|
|
|
domain = kzalloc(sizeof(struct erofs_domain), GFP_KERNEL);
|
|
if (!domain)
|
|
return -ENOMEM;
|
|
|
|
domain->domain_id = kstrdup(sbi->domain_id, GFP_KERNEL);
|
|
if (!domain->domain_id) {
|
|
kfree(domain);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
err = erofs_fscache_register_volume(sb);
|
|
if (err)
|
|
goto out;
|
|
|
|
if (!erofs_pseudo_mnt) {
|
|
struct vfsmount *mnt = kern_mount(&erofs_anon_fs_type);
|
|
if (IS_ERR(mnt)) {
|
|
err = PTR_ERR(mnt);
|
|
goto out;
|
|
}
|
|
erofs_pseudo_mnt = mnt;
|
|
}
|
|
|
|
domain->volume = sbi->volume;
|
|
refcount_set(&domain->ref, 1);
|
|
list_add(&domain->list, &erofs_domain_list);
|
|
sbi->domain = domain;
|
|
return 0;
|
|
out:
|
|
kfree(domain->domain_id);
|
|
kfree(domain);
|
|
return err;
|
|
}
|
|
|
|
static int erofs_fscache_register_domain(struct super_block *sb)
|
|
{
|
|
int err;
|
|
struct erofs_domain *domain;
|
|
struct erofs_sb_info *sbi = EROFS_SB(sb);
|
|
|
|
mutex_lock(&erofs_domain_list_lock);
|
|
list_for_each_entry(domain, &erofs_domain_list, list) {
|
|
if (!strcmp(domain->domain_id, sbi->domain_id)) {
|
|
sbi->domain = domain;
|
|
sbi->volume = domain->volume;
|
|
refcount_inc(&domain->ref);
|
|
mutex_unlock(&erofs_domain_list_lock);
|
|
return 0;
|
|
}
|
|
}
|
|
err = erofs_fscache_init_domain(sb);
|
|
mutex_unlock(&erofs_domain_list_lock);
|
|
return err;
|
|
}
|
|
|
|
static struct erofs_fscache *erofs_fscache_acquire_cookie(struct super_block *sb,
|
|
char *name, unsigned int flags)
|
|
{
|
|
struct fscache_volume *volume = EROFS_SB(sb)->volume;
|
|
struct erofs_fscache *ctx;
|
|
struct fscache_cookie *cookie;
|
|
struct super_block *isb;
|
|
struct inode *inode;
|
|
int ret;
|
|
|
|
ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
|
|
if (!ctx)
|
|
return ERR_PTR(-ENOMEM);
|
|
INIT_LIST_HEAD(&ctx->node);
|
|
refcount_set(&ctx->ref, 1);
|
|
|
|
cookie = fscache_acquire_cookie(volume, FSCACHE_ADV_WANT_CACHE_SIZE,
|
|
name, strlen(name), NULL, 0, 0);
|
|
if (!cookie) {
|
|
erofs_err(sb, "failed to get cookie for %s", name);
|
|
ret = -EINVAL;
|
|
goto err;
|
|
}
|
|
fscache_use_cookie(cookie, false);
|
|
|
|
/*
|
|
* Allocate anonymous inode in global pseudo mount for shareable blobs,
|
|
* so that they are accessible among erofs fs instances.
|
|
*/
|
|
isb = flags & EROFS_REG_COOKIE_SHARE ? erofs_pseudo_mnt->mnt_sb : sb;
|
|
inode = new_inode(isb);
|
|
if (!inode) {
|
|
erofs_err(sb, "failed to get anon inode for %s", name);
|
|
ret = -ENOMEM;
|
|
goto err_cookie;
|
|
}
|
|
|
|
inode->i_size = OFFSET_MAX;
|
|
inode->i_mapping->a_ops = &erofs_fscache_meta_aops;
|
|
mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
|
|
inode->i_blkbits = EROFS_SB(sb)->blkszbits;
|
|
inode->i_private = ctx;
|
|
|
|
ctx->cookie = cookie;
|
|
ctx->inode = inode;
|
|
return ctx;
|
|
|
|
err_cookie:
|
|
fscache_unuse_cookie(cookie, NULL, NULL);
|
|
fscache_relinquish_cookie(cookie, false);
|
|
err:
|
|
kfree(ctx);
|
|
return ERR_PTR(ret);
|
|
}
|
|
|
|
static void erofs_fscache_relinquish_cookie(struct erofs_fscache *ctx)
|
|
{
|
|
fscache_unuse_cookie(ctx->cookie, NULL, NULL);
|
|
fscache_relinquish_cookie(ctx->cookie, false);
|
|
iput(ctx->inode);
|
|
kfree(ctx->name);
|
|
kfree(ctx);
|
|
}
|
|
|
|
static struct erofs_fscache *erofs_domain_init_cookie(struct super_block *sb,
|
|
char *name, unsigned int flags)
|
|
{
|
|
struct erofs_fscache *ctx;
|
|
struct erofs_domain *domain = EROFS_SB(sb)->domain;
|
|
|
|
ctx = erofs_fscache_acquire_cookie(sb, name, flags);
|
|
if (IS_ERR(ctx))
|
|
return ctx;
|
|
|
|
ctx->name = kstrdup(name, GFP_KERNEL);
|
|
if (!ctx->name) {
|
|
erofs_fscache_relinquish_cookie(ctx);
|
|
return ERR_PTR(-ENOMEM);
|
|
}
|
|
|
|
refcount_inc(&domain->ref);
|
|
ctx->domain = domain;
|
|
list_add(&ctx->node, &erofs_domain_cookies_list);
|
|
return ctx;
|
|
}
|
|
|
|
static struct erofs_fscache *erofs_domain_register_cookie(struct super_block *sb,
|
|
char *name, unsigned int flags)
|
|
{
|
|
struct erofs_fscache *ctx;
|
|
struct erofs_domain *domain = EROFS_SB(sb)->domain;
|
|
|
|
flags |= EROFS_REG_COOKIE_SHARE;
|
|
mutex_lock(&erofs_domain_cookies_lock);
|
|
list_for_each_entry(ctx, &erofs_domain_cookies_list, node) {
|
|
if (ctx->domain != domain || strcmp(ctx->name, name))
|
|
continue;
|
|
if (!(flags & EROFS_REG_COOKIE_NEED_NOEXIST)) {
|
|
refcount_inc(&ctx->ref);
|
|
} else {
|
|
erofs_err(sb, "%s already exists in domain %s", name,
|
|
domain->domain_id);
|
|
ctx = ERR_PTR(-EEXIST);
|
|
}
|
|
mutex_unlock(&erofs_domain_cookies_lock);
|
|
return ctx;
|
|
}
|
|
ctx = erofs_domain_init_cookie(sb, name, flags);
|
|
mutex_unlock(&erofs_domain_cookies_lock);
|
|
return ctx;
|
|
}
|
|
|
|
struct erofs_fscache *erofs_fscache_register_cookie(struct super_block *sb,
|
|
char *name,
|
|
unsigned int flags)
|
|
{
|
|
if (EROFS_SB(sb)->domain_id)
|
|
return erofs_domain_register_cookie(sb, name, flags);
|
|
return erofs_fscache_acquire_cookie(sb, name, flags);
|
|
}
|
|
|
|
void erofs_fscache_unregister_cookie(struct erofs_fscache *ctx)
|
|
{
|
|
struct erofs_domain *domain = NULL;
|
|
|
|
if (!ctx)
|
|
return;
|
|
if (!ctx->domain)
|
|
return erofs_fscache_relinquish_cookie(ctx);
|
|
|
|
mutex_lock(&erofs_domain_cookies_lock);
|
|
if (refcount_dec_and_test(&ctx->ref)) {
|
|
domain = ctx->domain;
|
|
list_del(&ctx->node);
|
|
erofs_fscache_relinquish_cookie(ctx);
|
|
}
|
|
mutex_unlock(&erofs_domain_cookies_lock);
|
|
if (domain)
|
|
erofs_fscache_domain_put(domain);
|
|
}
|
|
|
|
int erofs_fscache_register_fs(struct super_block *sb)
|
|
{
|
|
int ret;
|
|
struct erofs_sb_info *sbi = EROFS_SB(sb);
|
|
struct erofs_fscache *fscache;
|
|
unsigned int flags = 0;
|
|
|
|
if (sbi->domain_id)
|
|
ret = erofs_fscache_register_domain(sb);
|
|
else
|
|
ret = erofs_fscache_register_volume(sb);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/*
|
|
* When shared domain is enabled, using NEED_NOEXIST to guarantee
|
|
* the primary data blob (aka fsid) is unique in the shared domain.
|
|
*
|
|
* For non-shared-domain case, fscache_acquire_volume() invoked by
|
|
* erofs_fscache_register_volume() has already guaranteed
|
|
* the uniqueness of primary data blob.
|
|
*
|
|
* Acquired domain/volume will be relinquished in kill_sb() on error.
|
|
*/
|
|
if (sbi->domain_id)
|
|
flags |= EROFS_REG_COOKIE_NEED_NOEXIST;
|
|
fscache = erofs_fscache_register_cookie(sb, sbi->fsid, flags);
|
|
if (IS_ERR(fscache))
|
|
return PTR_ERR(fscache);
|
|
|
|
sbi->s_fscache = fscache;
|
|
return 0;
|
|
}
|
|
|
|
void erofs_fscache_unregister_fs(struct super_block *sb)
|
|
{
|
|
struct erofs_sb_info *sbi = EROFS_SB(sb);
|
|
|
|
erofs_fscache_unregister_cookie(sbi->s_fscache);
|
|
|
|
if (sbi->domain)
|
|
erofs_fscache_domain_put(sbi->domain);
|
|
else
|
|
fscache_relinquish_volume(sbi->volume, NULL, false);
|
|
|
|
sbi->s_fscache = NULL;
|
|
sbi->volume = NULL;
|
|
sbi->domain = NULL;
|
|
}
|