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/* SPDX-License-Identifier: GPL-3.0-or-later */
/*
* init.c
*
* Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
*/
#include "simple_writer.h"
#include "compress_cli.h"
#include "common.h"
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#ifdef HAVE_SCHED_GETAFFINITY
#include <sched.h>
static size_t os_get_num_jobs(void)
{
cpu_set_t cpu_set;
CPU_ZERO(&cpu_set);
if (sched_getaffinity(0, sizeof cpu_set, &cpu_set) == -1)
return 1;
else
return CPU_COUNT(&cpu_set);
}
#else
static size_t os_get_num_jobs(void)
{
return 1;
}
#endif
void sqfs_writer_cfg_init(sqfs_writer_cfg_t *cfg)
{
memset(cfg, 0, sizeof(*cfg));
cfg->num_jobs = os_get_num_jobs();
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_block_processor_desc_t blkdesc;
sqfs_compressor_config_t cfg;
fstree_defaults_t fsd;
int ret, flags;
sqfs->filename = wrcfg->filename;
if (compressor_cfg_init_options(&cfg, wrcfg->comp_id,
wrcfg->block_size,
wrcfg->comp_extra)) {
return -1;
}
ret = sqfs_file_open(&sqfs->outfile, wrcfg->filename, wrcfg->outmode);
if (ret) {
sqfs_perror(wrcfg->filename, "open", ret);
return -1;
}
if (parse_fstree_defaults(&fsd, wrcfg->fs_defaults))
goto fail_file;
if (fstree_init(&sqfs->fs, &fsd))
goto fail_file;
ret = sqfs_compressor_create(&cfg, &sqfs->cmp);
#ifdef WITH_LZO
if (cfg.id == SQFS_COMP_LZO) {
if (sqfs->cmp != NULL)
sqfs_drop(sqfs->cmp);
ret = lzo_compressor_create(&cfg, &sqfs->cmp);
}
#endif
if (ret != 0) {
sqfs_perror(wrcfg->filename, "creating compressor", ret);
goto fail_fs;
}
cfg.flags |= SQFS_COMP_FLAG_UNCOMPRESS;
ret = sqfs_compressor_create(&cfg, &sqfs->uncmp);
#ifdef WITH_LZO
if (cfg.id == SQFS_COMP_LZO) {
if (ret == 0 && sqfs->uncmp != NULL)
sqfs_drop(sqfs->uncmp);
ret = lzo_compressor_create(&cfg, &sqfs->uncmp);
}
#endif
if (ret != 0) {
sqfs_perror(wrcfg->filename, "creating uncompressor", ret);
goto fail_cmp;
}
ret = sqfs_super_init(&sqfs->super, wrcfg->block_size,
sqfs->fs.defaults.mtime, wrcfg->comp_id);
if (ret) {
sqfs_perror(wrcfg->filename, "initializing super block", ret);
goto fail_uncmp;
}
ret = sqfs_super_write(&sqfs->super, sqfs->outfile);
if (ret) {
sqfs_perror(wrcfg->filename, "writing super block", ret);
goto fail_uncmp;
}
ret = sqfs->cmp->write_options(sqfs->cmp, sqfs->outfile);
if (ret < 0) {
sqfs_perror(wrcfg->filename, "writing compressor options", ret);
goto fail_uncmp;
}
if (ret > 0)
sqfs->super.flags |= SQFS_FLAG_COMPRESSOR_OPTIONS;
sqfs->blkwr = sqfs_block_writer_create(sqfs->outfile, 0);
if (sqfs->blkwr == NULL) {
perror("creating block writer");
goto fail_uncmp;
}
sqfs->fragtbl = sqfs_frag_table_create(0);
if (sqfs->fragtbl == NULL) {
perror("creating fragment table");
goto fail_blkwr;
}
memset(&blkdesc, 0, sizeof(blkdesc));
blkdesc.size = sizeof(blkdesc);
blkdesc.max_block_size = wrcfg->block_size;
blkdesc.num_workers = wrcfg->num_jobs;
blkdesc.max_backlog = wrcfg->max_backlog;
blkdesc.cmp = sqfs->cmp;
blkdesc.wr = sqfs->blkwr;
blkdesc.tbl = sqfs->fragtbl;
blkdesc.file = sqfs->outfile;
blkdesc.uncmp = sqfs->uncmp;
ret = sqfs_block_processor_create_ex(&blkdesc, &sqfs->data);
if (ret != 0) {
sqfs_perror(wrcfg->filename, "creating data block processor",
ret);
goto fail_fragtbl;
}
sqfs->idtbl = sqfs_id_table_create(0);
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(0);
if (sqfs->xwr == NULL) {
sqfs_perror(wrcfg->filename, "creating xattr writer",
SQFS_ERROR_ALLOC);
goto fail_id;
}
}
sqfs->im = sqfs_meta_writer_create(sqfs->outfile, sqfs->cmp, 0);
if (sqfs->im == NULL) {
fputs("Error creating inode meta data writer.\n", stderr);
goto fail_xwr;
}
sqfs->dm = sqfs_meta_writer_create(sqfs->outfile, sqfs->cmp,
SQFS_META_WRITER_KEEP_IN_MEMORY);
if (sqfs->dm == NULL) {
fputs("Error creating directory meta data writer.\n", stderr);
goto fail_im;
}
flags = 0;
if (wrcfg->exportable)
flags |= SQFS_DIR_WRITER_CREATE_EXPORT_TABLE;
sqfs->dirwr = sqfs_dir_writer_create(sqfs->dm, flags);
if (sqfs->dirwr == NULL) {
fputs("Error creating directory table writer.\n", stderr);
goto fail_dm;
}
return 0;
fail_dm:
sqfs_drop(sqfs->dm);
fail_im:
sqfs_drop(sqfs->im);
fail_xwr:
sqfs_drop(sqfs->xwr);
fail_id:
sqfs_drop(sqfs->idtbl);
fail_data:
sqfs_drop(sqfs->data);
fail_fragtbl:
sqfs_drop(sqfs->fragtbl);
fail_blkwr:
sqfs_drop(sqfs->blkwr);
fail_uncmp:
sqfs_drop(sqfs->uncmp);
fail_cmp:
sqfs_drop(sqfs->cmp);
fail_fs:
fstree_cleanup(&sqfs->fs);
fail_file:
sqfs_drop(sqfs->outfile);
return -1;
}
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