diff options
Diffstat (limited to 'lib/common/writer/init.c')
| -rw-r--r-- | lib/common/writer/init.c | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/lib/common/writer/init.c b/lib/common/writer/init.c new file mode 100644 index 0000000..d606d26 --- /dev/null +++ b/lib/common/writer/init.c @@ -0,0 +1,186 @@ +/* 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> + +#ifdef HAVE_SYS_SYSINFO_H +#include <sys/sysinfo.h> + +static size_t os_get_num_jobs(void) +{ + int nprocs; + + nprocs = get_nprocs_conf(); + return nprocs < 1 ? 1 : nprocs; +} +#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_compressor_config_t cfg; + int ret, flags; + + sqfs->filename = wrcfg->filename; + + 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; + + ret = sqfs_compressor_create(&cfg, &sqfs->cmp); + +#ifdef WITH_LZO + if (cfg.id == SQFS_COMP_LZO) { + if (sqfs->cmp != NULL) + sqfs_destroy(sqfs->cmp); + + ret = lzo_compressor_create(&cfg, &sqfs->cmp); + } +#endif + + if (ret != 0) { + sqfs_perror(wrcfg->filename, "creating compressor", ret); + 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->blkwr = sqfs_block_writer_create(sqfs->outfile, + wrcfg->devblksize, 0); + if (sqfs->blkwr == NULL) { + perror("creating block writer"); + goto fail_cmp; + } + + sqfs->fragtbl = sqfs_frag_table_create(0); + if (sqfs->fragtbl == NULL) { + perror("creating fragment table"); + goto fail_blkwr; + } + + sqfs->data = sqfs_block_processor_create(sqfs->super.block_size, + sqfs->cmp, wrcfg->num_jobs, + wrcfg->max_backlog, + sqfs->blkwr, sqfs->fragtbl); + if (sqfs->data == NULL) { + perror("creating data block processor"); + 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_destroy(sqfs->dm); +fail_im: + sqfs_destroy(sqfs->im); +fail_xwr: + if (sqfs->xwr != NULL) + sqfs_destroy(sqfs->xwr); +fail_id: + sqfs_destroy(sqfs->idtbl); +fail_data: + sqfs_destroy(sqfs->data); +fail_fragtbl: + sqfs_destroy(sqfs->fragtbl); +fail_blkwr: + sqfs_destroy(sqfs->blkwr); +fail_cmp: + sqfs_destroy(sqfs->cmp); +fail_fs: + fstree_cleanup(&sqfs->fs); +fail_file: + sqfs_destroy(sqfs->outfile); + return -1; +} |