1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
/* vi: set sw=4 ts=4: */
/*
* Utility routines.
*
* Copyright (C) tons of folks. Tracking down who wrote what
* isn't something I'm going to worry about... If you wrote something
* here, please feel free to acknowledge your work.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Based in part on code from sash, Copyright (c) 1999 by David I. Bell
* Permission has been granted to redistribute this code under the GPL.
*
*/
#include <stdio.h>
#include <sys/stat.h>
#include "libbb.h"
/*
* Copy chunksize bytes between two file descriptors
*
* unsigned long is used so that if -1 is passed as chunksize it will read as
* much as possible, and it will work with off_t or off64_t
*/
extern int copy_file_chunk(FILE *src_file, FILE *dst_file, unsigned long long chunksize)
{
off_t size, amount_written;
char buffer[BUFSIZ]; /* BUFSIZ is declared in stdio.h */
while (chunksize > 0) {
if (chunksize > BUFSIZ) {
size = BUFSIZ;
} else {
size = chunksize;
}
amount_written = fwrite(buffer, 1, fread(buffer, 1, size, src_file), dst_file);
if (amount_written != size) {
error_msg("Couldnt write correct amount");
return(FALSE);
}
chunksize -= amount_written;
}
return (TRUE);
}
/* END CODE */
/*
Local Variables:
c-file-style: "linux"
c-basic-offset: 4
tab-width: 4
End:
*/
|
