blob: 71911e794f8aab0f80e1174a40ba65912391fa48 [file] [log] [blame]
Dieter Baron5caa9c92017-12-11 16:50:12 +01001/*
2 zip_source_begin_write_cloning.c -- clone part of file for writing
Thomas Klausner9c5347e2021-06-18 11:33:22 +02003 Copyright (C) 2017-2021 Dieter Baron and Thomas Klausner
Dieter Baron5caa9c92017-12-11 16:50:12 +01004
5 This file is part of libzip, a library to manipulate ZIP archives.
6 The authors can be contacted at <libzip@nih.at>
7
8 Redistribution and use in source and binary forms, with or without
9 modification, are permitted provided that the following conditions
10 are met:
11 1. Redistributions of source code must retain the above copyright
12 notice, this list of conditions and the following disclaimer.
13 2. Redistributions in binary form must reproduce the above copyright
14 notice, this list of conditions and the following disclaimer in
15 the documentation and/or other materials provided with the
16 distribution.
17 3. The names of the authors may not be used to endorse or promote
18 products derived from this software without specific prior
19 written permission.
Thomas Klausner8eab1a22018-01-15 14:10:11 +010020
Dieter Baron5caa9c92017-12-11 16:50:12 +010021 THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS
22 OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
23 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
25 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
27 GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
29 IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
30 OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
31 IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32*/
33
34
35#include "zipint.h"
36
37
38ZIP_EXTERN int
Thomas Klausner8eab1a22018-01-15 14:10:11 +010039zip_source_begin_write_cloning(zip_source_t *src, zip_uint64_t offset) {
Dieter Baron5caa9c92017-12-11 16:50:12 +010040 if (ZIP_SOURCE_IS_OPEN_WRITING(src)) {
Thomas Klausnera14fded2020-07-21 16:07:23 +020041 zip_error_set(&src->error, ZIP_ER_INVAL, 0);
42 return -1;
Dieter Baron5caa9c92017-12-11 16:50:12 +010043 }
Thomas Klausner8eab1a22018-01-15 14:10:11 +010044
Dieter Baron5caa9c92017-12-11 16:50:12 +010045 if (_zip_source_call(src, NULL, offset, ZIP_SOURCE_BEGIN_WRITE_CLONING) < 0) {
Thomas Klausnera14fded2020-07-21 16:07:23 +020046 return -1;
Dieter Baron5caa9c92017-12-11 16:50:12 +010047 }
48
49 src->write_state = ZIP_SOURCE_WRITE_OPEN;
Thomas Klausner8eab1a22018-01-15 14:10:11 +010050
Dieter Baron5caa9c92017-12-11 16:50:12 +010051 return 0;
52}