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// SPDX-License-Identifier: GPL-2.0+ OR Apache-2.0
/*
* Copyright (C) 2025 Alibaba Cloud
*/
#include "erofs/importer.h"
#include "erofs/config.h"
#include "erofs/dedupe.h"
#include "erofs/inode.h"
#include "erofs/print.h"
#include "erofs/lock.h"
#include "erofs/xattr.h"
#include "liberofs_cache.h"
#include "liberofs_compress.h"
#include "liberofs_fragments.h"
#include "liberofs_metabox.h"
static EROFS_DEFINE_MUTEX(erofs_importer_global_mutex);
static bool erofs_importer_global_initialized;
void erofs_importer_preset(struct erofs_importer_params *params)
{
*params = (struct erofs_importer_params) {
.fixed_uid = -1,
.fixed_gid = -1,
.fsalignblks = 1,
.build_time = -1,
.max_compressed_extent_size =
EROFS_COMPRESSED_EXTENT_UNSPECIFIED,
};
}
void erofs_importer_global_init(void)
{
if (erofs_importer_global_initialized)
return;
erofs_mutex_lock(&erofs_importer_global_mutex);
if (!erofs_importer_global_initialized) {
erofs_inode_manager_init();
erofs_importer_global_initialized = true;
}
erofs_mutex_unlock(&erofs_importer_global_mutex);
}
int erofs_importer_init(struct erofs_importer *im)
{
struct erofs_sb_info *sbi = im->sbi;
struct erofs_importer_params *params = im->params;
const char *subsys = NULL;
int err;
erofs_importer_global_init();
subsys = "xattr";
err = erofs_xattr_init(sbi);
if (err)
goto out_err;
subsys = "compression";
err = z_erofs_compress_init(im);
if (err)
goto out_err;
if (params->fragments || cfg.c_extra_ea_name_prefixes ||
params->compress_dir) {
subsys = "packedfile";
if (!params->pclusterblks_packed)
params->pclusterblks_packed = params->pclusterblks_def;
err = erofs_packedfile_init(sbi, params->fragments ||
params->compress_dir);
if (err)
goto out_err;
}
subsys = "metadata";
err = erofs_metadata_init(sbi);
if (err)
goto out_err;
if (params->fragments) {
subsys = "dedupe_ext";
err = z_erofs_dedupe_ext_init();
if (err)
goto out_err;
}
if (params->dot_omitted)
erofs_sb_set_48bit(sbi);
if (params->build_time != -1) {
if (erofs_sb_has_48bit(sbi)) {
sbi->epoch = max_t(s64, 0, params->build_time - UINT32_MAX);
sbi->build_time = params->build_time - sbi->epoch;
} else {
sbi->epoch = params->build_time;
}
}
return 0;
out_err:
erofs_err("failed to initialize %s: %s", subsys, erofs_strerror(-err));
return err;
}
int erofs_importer_flush_all(struct erofs_importer *im)
{
struct erofs_sb_info *sbi = im->sbi;
unsigned int fsalignblks;
int err;
if (erofs_sb_has_metabox(sbi)) {
erofs_update_progressinfo("Handling metabox ...");
err = erofs_metabox_iflush(im);
if (err)
return err;
}
err = erofs_flush_packed_inode(im);
if (err)
return err;
err = erofs_metazone_flush(sbi);
if (err)
return err;
fsalignblks = im->params->fsalignblks ?
roundup_pow_of_two(im->params->fsalignblks) : 1;
sbi->primarydevice_blocks = roundup(erofs_mapbh(sbi->bmgr, NULL),
fsalignblks);
err = erofs_write_device_table(sbi);
if (err)
return err;
/* flush all buffers except for the superblock */
err = erofs_bflush(sbi->bmgr, NULL);
if (err)
return err;
return erofs_fixup_root_inode(im->root);
}
void erofs_importer_exit(struct erofs_importer *im)
{
struct erofs_sb_info *sbi = im->sbi;
z_erofs_dedupe_ext_exit();
erofs_metadata_exit(sbi);
erofs_packedfile_exit(sbi);
}
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