1 /**
2 * Copyright (c) 2005 PCMan <pcman.tw@gmail.com>
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software Foundation,
16 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
17 */
18
19 #include "fileutil.h"
20 #include <unistd.h>
21 #include <sys/types.h>
22 #include <sys/stat.h>
23 #include <fcntl.h>
24 #include <stdio.h>
25
copyfile(const char * src,const char * dest,int overwrite)26 int copyfile(const char* src, const char* dest, int overwrite)
27 {
28 int fdsrc;
29 int fddest;
30 char buf[4096];
31 size_t rlen = 0;
32 struct stat file_st;
33 mode_t fmode = S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH;
34
35 if( -1 != (fdsrc = open(src, O_RDONLY)) )
36 {
37 /* File already exists */
38 if( !overwrite && !access( dest, F_OK) )
39 return 0;
40 if( -1 != (fddest = open(dest,
41 O_CREAT | O_WRONLY | O_TRUNC,
42 fmode) ) )
43 {
44 while( (rlen = read( fdsrc, buf, sizeof(buf) )) )
45 rlen = write( fddest, buf, rlen );
46 close(fddest);
47 close(fdsrc);
48
49 stat(src, &file_st);
50 chmod(dest, file_st.st_mode);
51 return 0;
52 }
53 close(fdsrc);
54 }
55 return -1;
56 }
57
58