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/* SPDX-License-Identifier: GPL-3.0-or-later */
/*
* mkfs.c
*
* Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
*/
#include "mkfs.h"
static int set_working_dir(options_t *opt)
{
const char *ptr;
if (opt->packdir != NULL)
return pushd(opt->packdir);
ptr = strrchr(opt->infile, '/');
if (ptr != NULL)
return pushdn(opt->infile, ptr - opt->infile);
return 0;
}
static int restore_working_dir(options_t *opt)
{
if (opt->packdir != NULL || strrchr(opt->infile, '/') != NULL)
return popd();
return 0;
}
static int pack_files(data_writer_t *data, fstree_t *fs, options_t *opt)
{
file_info_t *fi;
int ret, infd;
if (set_working_dir(opt))
return -1;
while (fs->files != NULL) {
fi = fs->files;
fs->files = fi->next;
if (!opt->quiet)
printf("packing %s\n", fi->input_file);
infd = open(fi->input_file, O_RDONLY);
if (infd < 0) {
perror(fi->input_file);
return -1;
}
ret = write_data_from_fd(data, fi, infd, 0);
close(infd);
if (ret)
return -1;
}
if (data_writer_sync(data))
return -1;
return restore_working_dir(opt);
}
static int read_fstree(fstree_t *fs, options_t *opt)
{
FILE *fp;
int ret;
if (opt->infile == NULL)
return fstree_from_dir(fs, opt->packdir, opt->dirscan_flags);
fp = fopen(opt->infile, "rb");
if (fp == NULL) {
perror(opt->infile);
return -1;
}
if (set_working_dir(opt)) {
fclose(fp);
return -1;
}
ret = fstree_from_file(fs, opt->infile, fp);
fclose(fp);
if (restore_working_dir(opt))
return -1;
return ret;
}
int main(int argc, char **argv)
{
int status = EXIT_FAILURE, ret;
data_writer_t *data;
sqfs_super_t super;
compressor_t *cmp;
id_table_t idtbl;
options_t opt;
fstree_t fs;
int outfd;
process_command_line(&opt, argc, argv);
if (fstree_init(&fs, opt.blksz, opt.fs_defaults))
return EXIT_FAILURE;
if (sqfs_super_init(&super, opt.blksz, fs.defaults.st_mtime,
opt.compressor)) {
goto out_fstree;
}
if (id_table_init(&idtbl))
goto out_fstree;
outfd = open(opt.outfile, opt.outmode, 0644);
if (outfd < 0) {
perror(opt.outfile);
goto out_idtbl;
}
if (sqfs_super_write(&super, outfd))
goto out_outfd;
if (read_fstree(&fs, &opt))
goto out_outfd;
tree_node_sort_recursive(fs.root);
if (fstree_gen_inode_table(&fs))
goto out_outfd;
fstree_gen_file_list(&fs);
super.inode_count = fs.inode_tbl_size - 2;
#ifdef WITH_SELINUX
if (opt.selinux != NULL) {
if (fstree_relabel_selinux(&fs, opt.selinux))
goto out_outfd;
}
#endif
fstree_xattr_deduplicate(&fs);
cmp = compressor_create(super.compression_id, true, super.block_size,
opt.comp_extra);
if (cmp == NULL) {
fputs("Error creating compressor\n", stderr);
goto out_outfd;
}
ret = cmp->write_options(cmp, outfd);
if (ret < 0)
goto out_cmp;
if (ret > 0) {
super.flags |= SQFS_FLAG_COMPRESSOR_OPTIONS;
super.bytes_used += ret;
}
data = data_writer_create(&super, cmp, outfd,
opt.devblksz, opt.num_jobs);
if (data == NULL)
goto out_cmp;
if (pack_files(data, &fs, &opt))
goto out_data;
if (sqfs_serialize_fstree(outfd, &super, &fs, cmp, &idtbl))
goto out_data;
if (data_writer_write_fragment_table(data))
goto out_data;
if (opt.exportable) {
if (write_export_table(outfd, &fs, &super, cmp))
goto out_data;
}
if (id_table_write(&idtbl, outfd, &super, cmp))
goto out_data;
if (write_xattr(outfd, &fs, &super, cmp))
goto out_data;
if (sqfs_super_write(&super, outfd))
goto out_data;
if (padd_file(outfd, super.bytes_used, opt.devblksz))
goto out_data;
if (!opt.quiet)
sqfs_print_statistics(&fs, &super);
status = EXIT_SUCCESS;
out_data:
data_writer_destroy(data);
out_cmp:
cmp->destroy(cmp);
out_outfd:
close(outfd);
out_idtbl:
id_table_cleanup(&idtbl);
out_fstree:
fstree_cleanup(&fs);
return status;
}
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