7551d83c35
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. No functional change intended.
445 lines
10 KiB
C
445 lines
10 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2004-2016 Maxim Sobolev <sobomax@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <sys/endian.h>
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#include <sys/param.h>
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#include <sys/sysctl.h>
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#include <sys/stat.h>
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#include <sys/uio.h>
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#include <netinet/in.h>
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#include <assert.h>
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#include <ctype.h>
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#include <err.h>
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#include <fcntl.h>
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#include <pthread.h>
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#include <signal.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "mkuzip.h"
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#include "mkuz_cloop.h"
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#include "mkuz_blockcache.h"
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#include "mkuz_zlib.h"
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#include "mkuz_lzma.h"
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#include "mkuz_blk.h"
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#include "mkuz_cfg.h"
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#include "mkuz_conveyor.h"
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#include "mkuz_format.h"
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#include "mkuz_fqueue.h"
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#include "mkuz_time.h"
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#include "mkuz_insize.h"
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#define DEFAULT_CLSTSIZE 16384
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static struct mkuz_format uzip_fmt = {
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.magic = CLOOP_MAGIC_ZLIB,
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.default_sufx = DEFAULT_SUFX_ZLIB,
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.f_init = &mkuz_zlib_init,
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.f_compress = &mkuz_zlib_compress
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};
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static struct mkuz_format ulzma_fmt = {
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.magic = CLOOP_MAGIC_LZMA,
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.default_sufx = DEFAULT_SUFX_LZMA,
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.f_init = &mkuz_lzma_init,
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.f_compress = &mkuz_lzma_compress
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};
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static struct mkuz_blk *readblock(int, u_int32_t);
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static void usage(void);
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static void cleanup(void);
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static char *cleanfile = NULL;
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static int
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cmp_blkno(const struct mkuz_blk *bp, void *p)
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{
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uint32_t *ap;
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ap = (uint32_t *)p;
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return (bp->info.blkno == *ap);
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}
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int main(int argc, char **argv)
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{
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struct mkuz_cfg cfs;
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char *oname;
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uint64_t *toc;
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int i, io, opt, tmp;
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struct {
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int en;
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FILE *f;
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} summary;
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struct iovec iov[2];
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uint64_t offset, last_offset;
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struct cloop_header hdr;
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struct mkuz_conveyor *cvp;
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void *c_ctx;
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struct mkuz_blk_info *chit;
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size_t ncpusz, ncpu, magiclen;
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double st, et;
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st = getdtime();
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ncpusz = sizeof(size_t);
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if (sysctlbyname("hw.ncpu", &ncpu, &ncpusz, NULL, 0) < 0) {
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ncpu = 1;
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} else if (ncpu > MAX_WORKERS_AUTO) {
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ncpu = MAX_WORKERS_AUTO;
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}
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memset(&hdr, 0, sizeof(hdr));
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cfs.blksz = DEFAULT_CLSTSIZE;
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oname = NULL;
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cfs.verbose = 0;
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cfs.no_zcomp = 0;
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cfs.en_dedup = 0;
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summary.en = 0;
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summary.f = stderr;
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cfs.handler = &uzip_fmt;
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cfs.nworkers = ncpu;
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struct mkuz_blk *iblk, *oblk;
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while((opt = getopt(argc, argv, "o:s:vZdLSj:")) != -1) {
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switch(opt) {
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case 'o':
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oname = optarg;
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break;
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case 's':
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tmp = atoi(optarg);
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if (tmp <= 0) {
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errx(1, "invalid cluster size specified: %s",
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optarg);
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/* Not reached */
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}
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cfs.blksz = tmp;
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break;
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case 'v':
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cfs.verbose = 1;
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break;
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case 'Z':
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cfs.no_zcomp = 1;
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break;
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case 'd':
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cfs.en_dedup = 1;
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break;
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case 'L':
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cfs.handler = &ulzma_fmt;
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break;
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case 'S':
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summary.en = 1;
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summary.f = stdout;
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break;
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case 'j':
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tmp = atoi(optarg);
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if (tmp <= 0) {
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errx(1, "invalid number of compression threads"
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" specified: %s", optarg);
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/* Not reached */
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}
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cfs.nworkers = tmp;
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break;
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default:
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usage();
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/* Not reached */
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}
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}
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argc -= optind;
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argv += optind;
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if (argc != 1) {
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usage();
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/* Not reached */
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}
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magiclen = strlcpy(hdr.magic, cfs.handler->magic, sizeof(hdr.magic));
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assert(magiclen < sizeof(hdr.magic));
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if (cfs.en_dedup != 0) {
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hdr.magic[CLOOP_OFS_VERSN] = CLOOP_MAJVER_3;
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hdr.magic[CLOOP_OFS_COMPR] =
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tolower(hdr.magic[CLOOP_OFS_COMPR]);
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}
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c_ctx = cfs.handler->f_init(cfs.blksz);
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cfs.iname = argv[0];
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if (oname == NULL) {
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asprintf(&oname, "%s%s", cfs.iname, cfs.handler->default_sufx);
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if (oname == NULL) {
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err(1, "can't allocate memory");
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/* Not reached */
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}
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}
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signal(SIGHUP, exit);
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signal(SIGINT, exit);
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signal(SIGTERM, exit);
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signal(SIGXCPU, exit);
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signal(SIGXFSZ, exit);
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atexit(cleanup);
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cfs.fdr = open(cfs.iname, O_RDONLY);
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if (cfs.fdr < 0) {
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err(1, "open(%s)", cfs.iname);
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/* Not reached */
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}
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cfs.isize = mkuz_get_insize(&cfs);
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if (cfs.isize < 0) {
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errx(1, "can't determine input image size");
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/* Not reached */
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}
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hdr.nblocks = cfs.isize / cfs.blksz;
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if ((cfs.isize % cfs.blksz) != 0) {
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if (cfs.verbose != 0)
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fprintf(stderr, "file size is not multiple "
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"of %d, padding data\n", cfs.blksz);
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hdr.nblocks++;
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}
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toc = mkuz_safe_malloc((hdr.nblocks + 1) * sizeof(*toc));
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cfs.fdw = open(oname, (cfs.en_dedup ? O_RDWR : O_WRONLY) | O_TRUNC | O_CREAT,
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S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH);
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if (cfs.fdw < 0) {
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err(1, "open(%s)", oname);
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/* Not reached */
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}
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cleanfile = oname;
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/* Prepare header that we will write later when we have index ready. */
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iov[0].iov_base = (char *)&hdr;
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iov[0].iov_len = sizeof(hdr);
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iov[1].iov_base = (char *)toc;
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iov[1].iov_len = (hdr.nblocks + 1) * sizeof(*toc);
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offset = iov[0].iov_len + iov[1].iov_len;
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/* Reserve space for header */
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lseek(cfs.fdw, offset, SEEK_SET);
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if (cfs.verbose != 0) {
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fprintf(stderr, "data size %ju bytes, number of clusters "
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"%u, index length %zu bytes\n", cfs.isize,
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hdr.nblocks, iov[1].iov_len);
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}
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cvp = mkuz_conveyor_ctor(&cfs);
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last_offset = 0;
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iblk = oblk = NULL;
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for(i = io = 0; iblk != MKUZ_BLK_EOF; i++) {
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iblk = readblock(cfs.fdr, cfs.blksz);
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mkuz_fqueue_enq(cvp->wrk_queue, iblk);
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if (iblk != MKUZ_BLK_EOF &&
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(i < (cfs.nworkers * ITEMS_PER_WORKER))) {
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continue;
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}
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drain:
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oblk = mkuz_fqueue_deq_when(cvp->results, cmp_blkno, &io);
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assert(oblk->info.blkno == (unsigned)io);
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oblk->info.offset = offset;
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chit = NULL;
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if (cfs.en_dedup != 0 && oblk->info.len > 0) {
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chit = mkuz_blkcache_regblock(cfs.fdw, oblk);
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/*
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* There should be at least one non-empty block
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* between us and the backref'ed offset, otherwise
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* we won't be able to parse that sequence correctly
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* as it would be indistinguishible from another
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* empty block.
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*/
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if (chit != NULL && chit->offset == last_offset) {
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chit = NULL;
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}
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}
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if (chit != NULL) {
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toc[io] = htobe64(chit->offset);
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oblk->info.len = 0;
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} else {
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if (oblk->info.len > 0 && write(cfs.fdw, oblk->data,
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oblk->info.len) < 0) {
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err(1, "write(%s)", oname);
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/* Not reached */
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}
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toc[io] = htobe64(offset);
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last_offset = offset;
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offset += oblk->info.len;
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}
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if (cfs.verbose != 0) {
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fprintf(stderr, "cluster #%d, in %u bytes, "
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"out len=%lu offset=%lu", io, cfs.blksz,
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(u_long)oblk->info.len, (u_long)be64toh(toc[io]));
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if (chit != NULL) {
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fprintf(stderr, " (backref'ed to #%d)",
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chit->blkno);
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}
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fprintf(stderr, "\n");
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}
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free(oblk);
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io += 1;
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if (iblk == MKUZ_BLK_EOF) {
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if (io < i)
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goto drain;
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/* Last block, see if we need to add some padding */
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if ((offset % DEV_BSIZE) == 0)
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continue;
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oblk = mkuz_blk_ctor(DEV_BSIZE - (offset % DEV_BSIZE));
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oblk->info.blkno = io;
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oblk->info.len = oblk->alen;
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if (cfs.verbose != 0) {
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fprintf(stderr, "padding data with %lu bytes "
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"so that file size is multiple of %d\n",
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(u_long)oblk->alen, DEV_BSIZE);
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}
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mkuz_fqueue_enq(cvp->results, oblk);
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goto drain;
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}
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}
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close(cfs.fdr);
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if (cfs.verbose != 0 || summary.en != 0) {
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et = getdtime();
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fprintf(summary.f, "compressed data to %ju bytes, saved %lld "
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"bytes, %.2f%% decrease, %.2f bytes/sec.\n", offset,
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(long long)(cfs.isize - offset),
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100.0 * (long long)(cfs.isize - offset) /
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(float)cfs.isize, (float)cfs.isize / (et - st));
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}
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/* Convert to big endian */
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hdr.blksz = htonl(cfs.blksz);
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hdr.nblocks = htonl(hdr.nblocks);
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/* Write headers into pre-allocated space */
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lseek(cfs.fdw, 0, SEEK_SET);
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if (writev(cfs.fdw, iov, 2) < 0) {
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err(1, "writev(%s)", oname);
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/* Not reached */
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}
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cleanfile = NULL;
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close(cfs.fdw);
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exit(0);
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}
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static struct mkuz_blk *
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readblock(int fd, u_int32_t clstsize)
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{
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int numread;
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struct mkuz_blk *rval;
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static int blockcnt;
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off_t cpos;
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rval = mkuz_blk_ctor(clstsize);
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rval->info.blkno = blockcnt;
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blockcnt += 1;
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cpos = lseek(fd, 0, SEEK_CUR);
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if (cpos < 0) {
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err(1, "readblock: lseek() failed");
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/* Not reached */
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}
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rval->info.offset = cpos;
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numread = read(fd, rval->data, clstsize);
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if (numread < 0) {
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err(1, "readblock: read() failed");
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/* Not reached */
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}
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if (numread == 0) {
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free(rval);
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return MKUZ_BLK_EOF;
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}
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rval->info.len = numread;
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return rval;
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}
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static void
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usage(void)
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{
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fprintf(stderr, "usage: mkuzip [-vZdLS] [-o outfile] [-s cluster_size] "
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"[-j ncompr] infile\n");
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exit(1);
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}
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void *
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mkuz_safe_malloc(size_t size)
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{
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void *retval;
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retval = malloc(size);
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if (retval == NULL) {
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err(1, "can't allocate memory");
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/* Not reached */
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}
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return retval;
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}
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void *
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mkuz_safe_zmalloc(size_t size)
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{
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void *retval;
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retval = mkuz_safe_malloc(size);
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bzero(retval, size);
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return retval;
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}
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static void
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cleanup(void)
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{
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if (cleanfile != NULL)
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unlink(cleanfile);
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}
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int
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mkuz_memvcmp(const void *memory, unsigned char val, size_t size)
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{
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const u_char *mm;
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mm = (const u_char *)memory;
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return (*mm == val) && memcmp(mm, mm + 1, size - 1) == 0;
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}
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