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/* SPDX-License-Identifier: GPL-3.0-or-later */
/*
* writer.c
*
* Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
*/
#include "config.h"
#include "sqfs/error.h"
#include "highlevel.h"
#include "util.h"
#include <string.h>
void sqfs_writer_cfg_init(sqfs_writer_cfg_t *cfg)
{
memset(cfg, 0, sizeof(*cfg));
cfg->num_jobs = 1;
cfg->block_size = SQFS_DEFAULT_BLOCK_SIZE;
cfg->devblksize = SQFS_DEVBLK_SIZE;
cfg->comp_id = compressor_get_default();
}
int sqfs_writer_init(sqfs_writer_t *sqfs, const sqfs_writer_cfg_t *wrcfg)
{
sqfs_compressor_config_t cfg;
int ret;
if (compressor_cfg_init_options(&cfg, wrcfg->comp_id,
wrcfg->block_size,
wrcfg->comp_extra)) {
return -1;
}
sqfs->outfile = sqfs_open_file(wrcfg->filename, wrcfg->outmode);
if (sqfs->outfile == NULL) {
perror(wrcfg->filename);
return -1;
}
if (fstree_init(&sqfs->fs, wrcfg->fs_defaults))
goto fail_file;
sqfs->cmp = sqfs_compressor_create(&cfg);
if (sqfs->cmp == NULL) {
fputs("Error creating compressor\n", stderr);
goto fail_fs;
}
ret = sqfs_super_init(&sqfs->super, wrcfg->block_size,
sqfs->fs.defaults.st_mtime, wrcfg->comp_id);
if (ret) {
sqfs_perror(wrcfg->filename, "initializing super block", ret);
goto fail_cmp;
}
ret = sqfs_super_write(&sqfs->super, sqfs->outfile);
if (ret) {
sqfs_perror(wrcfg->filename, "writing super block", ret);
goto fail_cmp;
}
ret = sqfs->cmp->write_options(sqfs->cmp, sqfs->outfile);
if (ret < 0) {
sqfs_perror(wrcfg->filename, "writing compressor options", ret);
goto fail_cmp;
}
if (ret > 0)
sqfs->super.flags |= SQFS_FLAG_COMPRESSOR_OPTIONS;
sqfs->data = sqfs_data_writer_create(sqfs->super.block_size,
sqfs->cmp, wrcfg->num_jobs,
wrcfg->max_backlog,
wrcfg->devblksize,
sqfs->outfile);
if (sqfs->data == NULL) {
perror("creating data block processor");
goto fail_cmp;
}
register_stat_hooks(sqfs->data, &sqfs->stats);
sqfs->idtbl = sqfs_id_table_create();
if (sqfs->idtbl == NULL) {
sqfs_perror(wrcfg->filename, "creating ID table",
SQFS_ERROR_ALLOC);
goto fail_data;
}
if (!wrcfg->no_xattr) {
sqfs->xwr = sqfs_xattr_writer_create();
if (sqfs->xwr == NULL) {
sqfs_perror(wrcfg->filename, "creating xattr writer",
SQFS_ERROR_ALLOC);
goto fail;
}
}
return 0;
fail:
if (sqfs->xwr != NULL)
sqfs_xattr_writer_destroy(sqfs->xwr);
sqfs_id_table_destroy(sqfs->idtbl);
fail_data:
sqfs_data_writer_destroy(sqfs->data);
fail_cmp:
sqfs->cmp->destroy(sqfs->cmp);
fail_fs:
fstree_cleanup(&sqfs->fs);
fail_file:
sqfs->outfile->destroy(sqfs->outfile);
return -1;
}
int sqfs_writer_finish(sqfs_writer_t *sqfs, const sqfs_writer_cfg_t *cfg)
{
int ret;
ret = sqfs_data_writer_finish(sqfs->data);
if (ret) {
sqfs_perror(cfg->filename, "finishing data blocks", ret);
return -1;
}
tree_node_sort_recursive(sqfs->fs.root);
if (fstree_gen_inode_table(&sqfs->fs))
return -1;
sqfs->super.inode_count = sqfs->fs.inode_tbl_size;
if (sqfs_serialize_fstree(cfg->filename, sqfs->outfile, &sqfs->super,
&sqfs->fs, sqfs->cmp, sqfs->idtbl)) {
return -1;
}
ret = sqfs_data_writer_write_fragment_table(sqfs->data, &sqfs->super);
if (ret) {
sqfs_perror(cfg->filename, "writing fragment table", ret);
return -1;
}
if (cfg->exportable) {
if (write_export_table(cfg->filename, sqfs->outfile, &sqfs->fs,
&sqfs->super, sqfs->cmp)) {
return -1;
}
}
ret = sqfs_id_table_write(sqfs->idtbl, sqfs->outfile,
&sqfs->super, sqfs->cmp);
if (ret) {
sqfs_perror(cfg->filename, "writing ID table", ret);
return -1;
}
ret = sqfs_xattr_writer_flush(sqfs->xwr, sqfs->outfile,
&sqfs->super, sqfs->cmp);
if (ret) {
sqfs_perror(cfg->filename, "writing extended attributes", ret);
return -1;
}
sqfs->super.bytes_used = sqfs->outfile->get_size(sqfs->outfile);
ret = sqfs_super_write(&sqfs->super, sqfs->outfile);
if (ret) {
sqfs_perror(cfg->filename, "updating super block", ret);
return -1;
}
if (padd_sqfs(sqfs->outfile, sqfs->super.bytes_used,
cfg->devblksize)) {
return -1;
}
if (!cfg->quiet)
sqfs_print_statistics(&sqfs->super, &sqfs->stats);
return 0;
}
void sqfs_writer_cleanup(sqfs_writer_t *sqfs)
{
if (sqfs->xwr != NULL)
sqfs_xattr_writer_destroy(sqfs->xwr);
sqfs_id_table_destroy(sqfs->idtbl);
sqfs_data_writer_destroy(sqfs->data);
sqfs->cmp->destroy(sqfs->cmp);
fstree_cleanup(&sqfs->fs);
sqfs->outfile->destroy(sqfs->outfile);
}
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