700 lines
21 KiB
C
700 lines
21 KiB
C
/* -*- C -*-
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* Copyright (c) 1998-2006 Motoyuki Kasahara
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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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* 3. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT 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 PROJECT 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 "ebzip.h"
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#include "getumask.h"
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#include "makedir.h"
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#include "samefile.h"
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#include "yesno.h"
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/*
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* File name to be deleted and file to be closed when signal is received.
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*/
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static const char *trap_file_name = NULL;
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static int trap_file = -1;
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/*
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* Unexported function.
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*/
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static int ebzip_zip_file_internal(const char *out_file_name,
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const char *in_file_name, Zio_Code in_zio_code, int index_page,
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Zip_Speedup *speedup);
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static void trap(int signal_number);
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/*
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* Ccompress a file `in_file_name'.
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* For START file, use ebzip_zip_start_file() instead.
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* If it succeeds, 0 is returned. Otherwise -1 is returned.
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*/
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int
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ebzip_zip_file(const char *out_file_name, const char *in_file_name,
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Zio_Code in_zio_code, Zip_Speedup *speedup)
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{
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return ebzip_zip_file_internal(out_file_name, in_file_name,
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in_zio_code, 0, speedup);
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}
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/*
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* Compress TART file `in_file_name'.
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* If it succeeds, 0 is returned. Otherwise -1 is returned.
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*/
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int
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ebzip_zip_start_file(const char *out_file_name, const char *in_file_name,
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Zio_Code in_zio_code, int index_page, Zip_Speedup *speedup)
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{
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return ebzip_zip_file_internal(out_file_name, in_file_name,
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in_zio_code, index_page, speedup);
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}
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/*
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* Internal function for zip_unzip_file() and ebzip_zip_sebxa_start().
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* If it succeeds, 0 is returned. Otherwise -1 is returned.
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*/
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static int
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ebzip_zip_file_internal(const char *out_file_name, const char *in_file_name,
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Zio_Code in_zio_code, int index_page, Zip_Speedup *speedup)
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{
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Zio in_zio, out_zio;
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unsigned char *buffer, *in_buffer, *out_buffer;
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off_t in_total_length, out_total_length;
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ssize_t in_length;
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size_t *out_length;
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struct stat in_status, out_status;
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off_t *slice_location;
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off_t next_location;
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size_t index_length;
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int progress_interval;
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int total_slices;
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int i, j, k;
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int failed = 0;
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int slice_size = EB_SIZE_PAGE << ebzip_level;
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zio_initialize(&in_zio);
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zio_initialize(&out_zio);
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/*
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* Output information.
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*/
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if (!ebzip_quiet_flag) {
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fprintf(stderr, _("==> compress %s <==\n"), in_file_name);
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fprintf(stderr, _("output to %s\n"), out_file_name);
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fflush(stderr);
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}
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/*
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* Get status of the input file.
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*/
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if (stat(in_file_name, &in_status) < 0 || !S_ISREG(in_status.st_mode)) {
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fprintf(stderr, _("%s: no such file: %s\n"), invoked_name,
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in_file_name);
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goto failed;
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}
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/*
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* Do nothing if the `in_file_name' and `out_file_name' are the same.
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*/
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if (is_same_file(out_file_name, in_file_name)) {
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if (!ebzip_quiet_flag) {
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fprintf(stderr,
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_("the input and output files are the same, skipped.\n\n"));
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fflush(stderr);
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}
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return 0;
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}
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/*
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* Allocate memories for in/out buffers.
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*/
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buffer = (unsigned char *)malloc((slice_size * 2 + ZIO_SIZE_EBZIP_MARGIN
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+ sizeof(off_t) + sizeof(size_t)) * ebzip_slice_number);
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if (!buffer) {
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fprintf(stderr, _("%s: memory exhausted\n"), invoked_name);
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goto failed;
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}
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out_length = (size_t *)buffer;
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slice_location = (off_t *)buffer + sizeof(size_t) * ebzip_slice_number;
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in_buffer = buffer + (sizeof(size_t) + sizeof(off_t)) * ebzip_slice_number;
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out_buffer = in_buffer + slice_size * ebzip_slice_number;
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/*
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* If the file `out_file_name' already exists, confirm and unlink it.
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*/
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if (!ebzip_test_flag
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&& stat(out_file_name, &out_status) == 0
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&& S_ISREG(out_status.st_mode)) {
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if (ebzip_overwrite_mode == EBZIP_OVERWRITE_NO) {
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if (!ebzip_quiet_flag) {
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fputs(_("already exists, skip the file\n\n"), stderr);
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fflush(stderr);
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}
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return 0;
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} else if (ebzip_overwrite_mode == EBZIP_OVERWRITE_CONFIRM) {
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int y_or_n;
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fprintf(stderr, _("\nthe file already exists: %s\n"),
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out_file_name);
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y_or_n = query_y_or_n(_("do you wish to overwrite (y or n)? "));
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fputc('\n', stderr);
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fflush(stderr);
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if (!y_or_n)
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return 0;
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}
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if (unlink(out_file_name) < 0) {
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fprintf(stderr, _("%s: failed to unlink the file: %s\n"),
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invoked_name, out_file_name);
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goto failed;
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}
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}
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/*
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* Open files.
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*/
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if (zio_open(&in_zio, in_file_name, in_zio_code) < 0) {
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fprintf(stderr, _("%s: failed to open the file: %s\n"),
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invoked_name, in_file_name);
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goto failed;
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}
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if (in_zio_code == ZIO_SEBXA) {
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off_t index_location;
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off_t index_base;
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off_t zio_start_location;
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off_t zio_end_location;
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if (get_sebxa_indexes(in_file_name, index_page, &index_location,
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&index_base, &zio_start_location, &zio_end_location) < 0) {
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goto failed;
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}
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zio_set_sebxa_mode(&in_zio, index_location, index_base,
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zio_start_location, zio_end_location);
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}
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if (!ebzip_test_flag) {
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trap_file_name = out_file_name;
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#ifdef SIGHUP
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signal(SIGHUP, trap);
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#endif
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signal(SIGINT, trap);
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#ifdef SIGQUIT
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signal(SIGQUIT, trap);
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#endif
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#ifdef SIGTERM
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signal(SIGTERM, trap);
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#endif
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#ifdef O_CREAT
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out_zio.file = open(out_file_name,
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O_CREAT | O_TRUNC | O_WRONLY | O_BINARY, 0666 ^ get_umask());
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#else
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out_zio.file = creat(out_file_name, 0666 ^ get_umask());
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#endif
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if (out_zio.file < 0) {
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fprintf(stderr, _("%s: failed to open the file, %s: %s\n"),
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invoked_name, strerror(errno), out_file_name);
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goto failed;
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}
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trap_file = out_zio.file;
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}
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/*
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* Initialize `zip'.
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*/
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out_zio.code = ZIO_EBZIP1;
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out_zio.slice_size = slice_size;
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out_zio.file_size = in_zio.file_size;
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out_zio.crc = 1;
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out_zio.mtime = in_status.st_mtime;
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if (out_zio.file_size < (off_t) 1 << 16)
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out_zio.index_width = 2;
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else if (out_zio.file_size < (off_t) 1 << 24)
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out_zio.index_width = 3;
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else if (out_zio.file_size < (off_t) 1 << 32 || !off_t_is_large)
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out_zio.index_width = 4;
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else
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out_zio.index_width = 5;
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/*
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* Fill header and index part with `\0'.
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*
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* Original File:
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* +-----------------+-----------------+-....-+-------+
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* | slice 1 | slice 2 | |slice N| [EOF]
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* | | | | |
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* +-----------------+-----------------+-....-+-------+
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* slice_size slice_size odds
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* <-------------------- file size ------------------->
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*
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* Compressed file:
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* +------+---------+...+---------+---------+----------+...+-
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* |Header|index for| |index for|index for|compressed| |
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* | | slice 1 | | slice N | EOF | slice 1 | |
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* +------+---------+...+---------+---------+----------+...+-
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* index index index
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* width width width
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* <--------- index_length --------->
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*
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* total_slices = N = (file_size + slice_size - 1) / slice_size
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* index_length = (N + 1) * index_width
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*/
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total_slices = (out_zio.file_size + slice_size - 1) / slice_size;
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index_length = (total_slices + 1) * out_zio.index_width;
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memset(out_buffer, '\0', slice_size);
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if (!ebzip_test_flag) {
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for (i = index_length + ZIO_SIZE_EBZIP_HEADER;
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slice_size <= i; i -= slice_size) {
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if (write(out_zio.file, out_buffer, slice_size) != slice_size) {
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fprintf(stderr, _("%s: failed to write to the file: %s\n"),
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invoked_name, out_file_name);
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goto failed;
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}
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}
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if (0 < i) {
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if (write(out_zio.file, out_buffer, i) != i) {
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fprintf(stderr, _("%s: failed to write to the file: %s\n"),
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invoked_name, out_file_name);
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goto failed;
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}
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}
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}
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/*
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* Read a slice from the input file, compress it, and then
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* write it to the output file.
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*/
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in_total_length = 0;
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out_total_length = 0;
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progress_interval = EBZIP_PROGRESS_INTERVAL_FACTOR >> ebzip_level;
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if (((total_slices + 999) / 1000) > progress_interval)
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progress_interval = ((total_slices + 999) / 1000);
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for (i = 0; i < total_slices; i += j) {
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j = (i + ebzip_slice_number) < total_slices ?
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ebzip_slice_number : total_slices - i;
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for (k = 0; k < j; k++) {
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/*
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* Read a slice from the original file.
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*/
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if (zio_lseek(&in_zio, in_total_length, SEEK_SET) < 0) {
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fprintf(stderr, _("%s: failed to seek the file: %s\n"),
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invoked_name, in_file_name);
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goto failed;
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}
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in_length = zio_read(&in_zio, (char *)(in_buffer + k * slice_size),
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slice_size);
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if (in_length < 0) {
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fprintf(stderr, _("%s: failed to read from the file: %s\n"),
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invoked_name, in_file_name);
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goto failed;
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} else if (in_length == 0) {
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fprintf(stderr, _("%s: unexpected EOF: %s\n"),
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invoked_name, in_file_name);
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goto failed;
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} else if (in_length != slice_size
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&& in_total_length + in_length != out_zio.file_size) {
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fprintf(stderr, _("%s: unexpected EOF: %s\n"),
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invoked_name, in_file_name);
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goto failed;
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}
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/*
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* Update CRC. (Calculate adler32 again.)
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*/
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#ifdef ENABLE_LIBDEFLATE
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out_zio.crc = libdeflate_adler32
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((uint32_t)out_zio.crc, in_buffer + k * slice_size,
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(size_t)in_length);
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#else
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out_zio.crc = adler32((uLong)out_zio.crc,
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(Bytef *)(in_buffer + k * slice_size), (uInt)in_length);
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#endif
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/*
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* If this is last slice and its length is shorter than
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* `slice_size', fill `\0'.
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*/
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if (in_length < slice_size) {
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memset(in_buffer + k * slice_size + in_length, '\0',
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slice_size - in_length);
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in_length = slice_size;
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}
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in_total_length += in_length;
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}
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#pragma omp parallel for
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for (k = 0; k < j; k++) {
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if (!failed) {
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/*
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* Compress the slice.
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*/
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if (speedup != NULL
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&& ebzip_is_speedup_slice(speedup, i + k, ebzip_level)) {
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out_length[k] = slice_size;
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} else if (ebzip1_slice
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((char *)(out_buffer
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+ k * (slice_size + ZIO_SIZE_EBZIP_MARGIN)),
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&out_length[k],
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(char *)(in_buffer + k * slice_size),
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slice_size) < 0) {
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fprintf(stderr, _("%s: memory exhausted\n"), invoked_name);
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failed = 1;
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}
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if (slice_size <= out_length[k]) {
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memcpy(out_buffer
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+ k * (slice_size + ZIO_SIZE_EBZIP_MARGIN),
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in_buffer + k * slice_size, slice_size);
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out_length[k] = slice_size;
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}
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}
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}
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if (failed) goto failed;
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for (k = 0; k < j; k++) {
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/*
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* Write the slice to the zip file.
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* If the length of the zipped slice is not shorter than
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* original, write orignal slice.
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*/
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if (!ebzip_test_flag) {
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slice_location[k] = lseek(out_zio.file, 0, SEEK_END);
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if (slice_location[k] < 0) {
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fprintf(stderr, _("%s: failed to seek the file, %s: %s\n"),
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invoked_name, strerror(errno), out_file_name);
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goto failed;
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}
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if (write(out_zio.file, out_buffer
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+ k * (slice_size + ZIO_SIZE_EBZIP_MARGIN),
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out_length[k]) != out_length[k]) {
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fprintf(stderr, _("%s: failed to write to the file: %s\n"),
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invoked_name, out_file_name);
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goto failed;
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}
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}
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}
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for (k = 0; k < j; k++) {
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/*
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* Write an index for the slice.
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*/
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switch (out_zio.index_width) {
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case 2:
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out_buffer[ 2 * k] = (slice_location[k] >> 8) & 0xff;
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out_buffer[1 + 2 * k] = slice_location[k] & 0xff;
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break;
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case 3:
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out_buffer[ 3 * k] = (slice_location[k] >> 16) & 0xff;
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out_buffer[1 + 3 * k] = (slice_location[k] >> 8) & 0xff;
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out_buffer[2 + 3 * k] = slice_location[k] & 0xff;
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break;
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case 4:
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out_buffer[ 4 * k] = (slice_location[k] >> 24) & 0xff;
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out_buffer[1 + 4 * k] = (slice_location[k] >> 16) & 0xff;
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out_buffer[2 + 4 * k] = (slice_location[k] >> 8) & 0xff;
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out_buffer[3 + 4 * k] = slice_location[k] & 0xff;
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break;
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case 5:
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out_buffer[ 5 * k] = (slice_location[k] >> 32) & 0xff;
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out_buffer[1 + 5 * k] = (slice_location[k] >> 24) & 0xff;
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out_buffer[2 + 5 * k] = (slice_location[k] >> 16) & 0xff;
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out_buffer[3 + 5 * k] = (slice_location[k] >> 8) & 0xff;
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out_buffer[4 + 5 * k] = slice_location[k] & 0xff;
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break;
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}
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out_total_length += out_length[k] + out_zio.index_width;
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}
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next_location = slice_location[j - 1] + out_length[j - 1];
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switch (out_zio.index_width) {
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case 2:
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out_buffer[ 2 * j] = (next_location >> 8) & 0xff;
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out_buffer[1 + 2 * j] = next_location & 0xff;
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break;
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case 3:
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out_buffer[ 3 * j] = (next_location >> 16) & 0xff;
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out_buffer[1 + 3 * j] = (next_location >> 8) & 0xff;
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out_buffer[2 + 3 * j] = next_location & 0xff;
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break;
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case 4:
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out_buffer[ 4 * j] = (next_location >> 24) & 0xff;
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out_buffer[1 + 4 * j] = (next_location >> 16) & 0xff;
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out_buffer[2 + 4 * j] = (next_location >> 8) & 0xff;
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out_buffer[3 + 4 * j] = next_location & 0xff;
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break;
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case 5:
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out_buffer[ 5 * j] = (next_location >> 32) & 0xff;
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out_buffer[1 + 5 * j] = (next_location >> 24) & 0xff;
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out_buffer[2 + 5 * j] = (next_location >> 16) & 0xff;
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out_buffer[3 + 5 * j] = (next_location >> 8) & 0xff;
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out_buffer[4 + 5 * j] = next_location & 0xff;
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break;
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}
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if (!ebzip_test_flag) {
|
|
if (lseek(out_zio.file,
|
|
ZIO_SIZE_EBZIP_HEADER + (off_t) i * out_zio.index_width,
|
|
SEEK_SET) < 0) {
|
|
fprintf(stderr, _("%s: failed to seek the file, %s: %s\n"),
|
|
invoked_name, strerror(errno), out_file_name);
|
|
goto failed;
|
|
}
|
|
if (write(out_zio.file, out_buffer, out_zio.index_width * (j + 1))
|
|
!= out_zio.index_width * (j + 1)) {
|
|
fprintf(stderr, _("%s: failed to write to the file, %s: %s\n"),
|
|
invoked_name, strerror(errno), out_file_name);
|
|
goto failed;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Output status information unless `quiet' mode.
|
|
*/
|
|
if (!ebzip_quiet_flag
|
|
&& (j >= progress_interval
|
|
|| (i + j) / progress_interval > i / progress_interval)) {
|
|
#if defined(PRINTF_LL_MODIFIER)
|
|
fprintf(stderr, _("%4.1f%% done (%llu / %llu bytes)\n"),
|
|
(double) (i + k + 1) * 100.0 / (double) total_slices,
|
|
(unsigned long long) in_total_length,
|
|
(unsigned long long) in_zio.file_size);
|
|
#elif defined(PRINTF_I64_MODIFIER)
|
|
fprintf(stderr, _("%4.1f%% done (%I64u / %I64u bytes)\n"),
|
|
(double) (i + k + 1) * 100.0 / (double) total_slices,
|
|
(unsigned __int64) in_total_length,
|
|
(unsigned __int64) in_zio.file_size);
|
|
#else
|
|
fprintf(stderr, _("%4.1f%% done (%lu / %lu bytes)\n"),
|
|
(double) (i + k + 1) * 100.0 / (double) total_slices,
|
|
(unsigned long) in_total_length,
|
|
(unsigned long) in_zio.file_size);
|
|
#endif
|
|
fflush(stderr);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Write a header part (22 bytes):
|
|
* magic-id 5 bytes ( 0 ... 4)
|
|
* zip-mode 4/8 bytes ( 5)
|
|
* slice_size 4/8 bytes ( 5)
|
|
* (reserved) 4 bytes ( 6 ... 9)
|
|
* file_size 4 bytes (10 ... 13)
|
|
* crc 4 bytes (14 ... 17)
|
|
* mtime 4 bytes (18 ... 21)
|
|
*/
|
|
memcpy(out_buffer, "EBZip", 5);
|
|
|
|
if (out_zio.file_size < (off_t) 1 << 32 || !off_t_is_large)
|
|
out_buffer[5] = (1 << 4) + (ebzip_level & 0x0f);
|
|
else
|
|
out_buffer[5] = (2 << 4) + (ebzip_level & 0x0f);
|
|
out_buffer[ 6] = 0;
|
|
out_buffer[ 7] = 0;
|
|
out_buffer[ 8] = 0;
|
|
out_buffer[ 9] = (out_zio.file_size >> 32) & 0xff;
|
|
out_buffer[10] = (out_zio.file_size >> 24) & 0xff;
|
|
out_buffer[11] = (out_zio.file_size >> 16) & 0xff;
|
|
out_buffer[12] = (out_zio.file_size >> 8) & 0xff;
|
|
out_buffer[13] = out_zio.file_size & 0xff;
|
|
out_buffer[14] = (out_zio.crc >> 24) & 0xff;
|
|
out_buffer[15] = (out_zio.crc >> 16) & 0xff;
|
|
out_buffer[16] = (out_zio.crc >> 8) & 0xff;
|
|
out_buffer[17] = out_zio.crc & 0xff;
|
|
out_buffer[18] = (out_zio.mtime >> 24) & 0xff;
|
|
out_buffer[19] = (out_zio.mtime >> 16) & 0xff;
|
|
out_buffer[20] = (out_zio.mtime >> 8) & 0xff;
|
|
out_buffer[21] = out_zio.mtime & 0xff;
|
|
|
|
if (!ebzip_test_flag) {
|
|
if (lseek(out_zio.file, 0, SEEK_SET) < 0) {
|
|
fprintf(stderr, _("%s: failed to seek the file, %s: %s\n"),
|
|
invoked_name, strerror(errno), out_file_name);
|
|
goto failed;
|
|
}
|
|
if (write(out_zio.file, out_buffer, ZIO_SIZE_EBZIP_HEADER)
|
|
!= ZIO_SIZE_EBZIP_HEADER) {
|
|
fprintf(stderr, _("%s: failed to write to the file, %s: %s\n"),
|
|
invoked_name, strerror(errno), out_file_name);
|
|
goto failed;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Output the result information unless quiet mode.
|
|
*/
|
|
out_total_length += ZIO_SIZE_EBZIP_HEADER + out_zio.index_width;
|
|
|
|
if (!ebzip_quiet_flag) {
|
|
#if defined(PRINTF_LL_MODIFIER)
|
|
fprintf(stderr, _("completed (%llu / %llu bytes)\n"),
|
|
(unsigned long long) in_zio.file_size,
|
|
(unsigned long long) in_zio.file_size);
|
|
if (in_total_length != 0) {
|
|
fprintf(stderr, _("%llu -> %llu bytes (%4.1f%%)\n\n"),
|
|
(unsigned long long) in_zio.file_size,
|
|
(unsigned long long) out_total_length,
|
|
(double) out_total_length * 100.0
|
|
/ (double) in_zio.file_size);
|
|
} else {
|
|
fprintf(stderr, _("%llu -> %llu bytes\n\n"),
|
|
(unsigned long long) in_zio.file_size,
|
|
(unsigned long long) out_total_length);
|
|
}
|
|
#elif defined(PRINTF_I64_MODIFIER)
|
|
fprintf(stderr, _("completed (%I64u / %I64u bytes)\n"),
|
|
(unsigned __int64) in_zio.file_size,
|
|
(unsigned __int64) in_zio.file_size);
|
|
if (in_total_length != 0) {
|
|
fprintf(stderr, _("%I64u -> %I64u bytes (%4.1f%%)\n\n"),
|
|
(unsigned __int64) in_zio.file_size,
|
|
(unsigned __int64) out_total_length,
|
|
(double) out_total_length * 100.0 / (double) in_zio.file_size);
|
|
} else {
|
|
fprintf(stderr, _("%I64u -> %I64u bytes\n\n"),
|
|
(unsigned __int64) in_zio.file_size,
|
|
(unsigned __int64) out_total_length);
|
|
}
|
|
#else
|
|
fprintf(stderr, _("completed (%lu / %lu bytes)\n"),
|
|
(unsigned long) in_zio.file_size,
|
|
(unsigned long) in_zio.file_size);
|
|
if (in_total_length != 0) {
|
|
fprintf(stderr, _("%lu -> %lu bytes (%4.1f%%)\n\n"),
|
|
(unsigned long) in_zio.file_size,
|
|
(unsigned long) out_total_length,
|
|
(double) out_total_length * 100.0 / (double) in_zio.file_size);
|
|
} else {
|
|
fprintf(stderr, _("%lu -> %lu bytes\n\n"),
|
|
(unsigned long) in_zio.file_size,
|
|
(unsigned long) out_total_length);
|
|
}
|
|
#endif
|
|
fflush(stderr);
|
|
}
|
|
|
|
/*
|
|
* Close files.
|
|
*/
|
|
zio_close(&in_zio);
|
|
zio_finalize(&in_zio);
|
|
|
|
if (!ebzip_test_flag) {
|
|
close(out_zio.file);
|
|
out_zio.file = -1;
|
|
zio_finalize(&out_zio);
|
|
trap_file = -1;
|
|
trap_file_name = NULL;
|
|
#ifdef SIGHUP
|
|
signal(SIGHUP, SIG_DFL);
|
|
#endif
|
|
signal(SIGINT, SIG_DFL);
|
|
#ifdef SIGQUIT
|
|
signal(SIGQUIT, SIG_DFL);
|
|
#endif
|
|
#ifdef SIGTERM
|
|
signal(SIGTERM, SIG_DFL);
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Delete an original file unless the keep flag is set.
|
|
*/
|
|
if (!ebzip_test_flag && !ebzip_keep_flag)
|
|
unlink_files_add(in_file_name);
|
|
|
|
/*
|
|
* Set owner, group, permission, atime and utime of `out_zio.file'.
|
|
* We ignore return values of `chown', `chmod' and `utime'.
|
|
*/
|
|
if (!ebzip_test_flag) {
|
|
struct utimbuf utim;
|
|
|
|
utim.actime = in_status.st_atime;
|
|
utim.modtime = in_status.st_mtime;
|
|
utime(out_file_name, &utim);
|
|
}
|
|
|
|
/*
|
|
* Dispose memories.
|
|
*/
|
|
free(buffer);
|
|
|
|
return 0;
|
|
|
|
/*
|
|
* An error occurs...
|
|
*/
|
|
failed:
|
|
if (buffer)
|
|
free(buffer);
|
|
|
|
zio_close(&in_zio);
|
|
zio_finalize(&in_zio);
|
|
|
|
if (0 <= out_zio.file) {
|
|
close(out_zio.file);
|
|
out_zio.file = -1;
|
|
zio_finalize(&out_zio);
|
|
trap_file = -1;
|
|
trap_file_name = NULL;
|
|
#ifdef SIGHUP
|
|
signal(SIGHUP, SIG_DFL);
|
|
#endif
|
|
signal(SIGINT, SIG_DFL);
|
|
#ifdef SIGQUIT
|
|
signal(SIGQUIT, SIG_DFL);
|
|
#endif
|
|
#ifdef SIGTERM
|
|
signal(SIGTERM, SIG_DFL);
|
|
#endif
|
|
}
|
|
|
|
fputc('\n', stderr);
|
|
fflush(stderr);
|
|
|
|
return -1;
|
|
}
|
|
|
|
|
|
/*
|
|
* Signal handler.
|
|
*/
|
|
static void
|
|
trap(int signal_number)
|
|
{
|
|
if (0 <= trap_file)
|
|
close(trap_file);
|
|
if (trap_file_name != NULL)
|
|
unlink(trap_file_name);
|
|
|
|
exit(1);
|
|
}
|