1*d5c9a868SElliott Hughes /* Copyright 1996-1999,2001,2002,2009 Alain Knaff.
2*d5c9a868SElliott Hughes * This file is part of mtools.
3*d5c9a868SElliott Hughes *
4*d5c9a868SElliott Hughes * Mtools is free software: you can redistribute it and/or modify
5*d5c9a868SElliott Hughes * it under the terms of the GNU General Public License as published by
6*d5c9a868SElliott Hughes * the Free Software Foundation, either version 3 of the License, or
7*d5c9a868SElliott Hughes * (at your option) any later version.
8*d5c9a868SElliott Hughes *
9*d5c9a868SElliott Hughes * Mtools is distributed in the hope that it will be useful,
10*d5c9a868SElliott Hughes * but WITHOUT ANY WARRANTY; without even the implied warranty of
11*d5c9a868SElliott Hughes * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12*d5c9a868SElliott Hughes * GNU General Public License for more details.
13*d5c9a868SElliott Hughes *
14*d5c9a868SElliott Hughes * You should have received a copy of the GNU General Public License
15*d5c9a868SElliott Hughes * along with Mtools. If not, see <http://www.gnu.org/licenses/>.
16*d5c9a868SElliott Hughes */
17*d5c9a868SElliott Hughes #include "sysincludes.h"
18*d5c9a868SElliott Hughes #include "msdos.h"
19*d5c9a868SElliott Hughes #include "mtools.h"
20*d5c9a868SElliott Hughes #include "file.h"
21*d5c9a868SElliott Hughes #include "llong.h"
22*d5c9a868SElliott Hughes
23*d5c9a868SElliott Hughes /*
24*d5c9a868SElliott Hughes * Copy the data from source to target
25*d5c9a868SElliott Hughes */
26*d5c9a868SElliott Hughes
copyfile(Stream_t * Source,Stream_t * Target)27*d5c9a868SElliott Hughes mt_off_t copyfile(Stream_t *Source, Stream_t *Target)
28*d5c9a868SElliott Hughes {
29*d5c9a868SElliott Hughes char buffer[8*16384];
30*d5c9a868SElliott Hughes mt_off_t pos;
31*d5c9a868SElliott Hughes ssize_t ret;
32*d5c9a868SElliott Hughes ssize_t retw;
33*d5c9a868SElliott Hughes
34*d5c9a868SElliott Hughes if (!Source){
35*d5c9a868SElliott Hughes fprintf(stderr,"Couldn't open source file\n");
36*d5c9a868SElliott Hughes return -1;
37*d5c9a868SElliott Hughes }
38*d5c9a868SElliott Hughes
39*d5c9a868SElliott Hughes if (!Target){
40*d5c9a868SElliott Hughes fprintf(stderr,"Couldn't open target file\n");
41*d5c9a868SElliott Hughes return -1;
42*d5c9a868SElliott Hughes }
43*d5c9a868SElliott Hughes
44*d5c9a868SElliott Hughes pos = 0;
45*d5c9a868SElliott Hughes while(1){
46*d5c9a868SElliott Hughes ret = READS(Source, buffer, 8*16384);
47*d5c9a868SElliott Hughes if (ret < 0 ){
48*d5c9a868SElliott Hughes perror("file read");
49*d5c9a868SElliott Hughes return -1;
50*d5c9a868SElliott Hughes }
51*d5c9a868SElliott Hughes if(!ret)
52*d5c9a868SElliott Hughes break;
53*d5c9a868SElliott Hughes if(got_signal)
54*d5c9a868SElliott Hughes return -1;
55*d5c9a868SElliott Hughes if (ret == 0)
56*d5c9a868SElliott Hughes break;
57*d5c9a868SElliott Hughes if ((retw = force_write(Target, buffer, (size_t) ret)) != ret){
58*d5c9a868SElliott Hughes if(retw < 0 )
59*d5c9a868SElliott Hughes perror("write in copy");
60*d5c9a868SElliott Hughes else
61*d5c9a868SElliott Hughes fprintf(stderr,
62*d5c9a868SElliott Hughes "Short write %zd instead of %zd\n",
63*d5c9a868SElliott Hughes retw, ret);
64*d5c9a868SElliott Hughes if(errno == ENOSPC)
65*d5c9a868SElliott Hughes got_signal = 1;
66*d5c9a868SElliott Hughes return ret;
67*d5c9a868SElliott Hughes }
68*d5c9a868SElliott Hughes pos += ret;
69*d5c9a868SElliott Hughes }
70*d5c9a868SElliott Hughes return pos;
71*d5c9a868SElliott Hughes }
72