63 lines
1.1 KiB
C
Executable File
63 lines
1.1 KiB
C
Executable File
#include "sysincludes.h"
|
|
#include "msdos.h"
|
|
#include "mtools.h"
|
|
#include "file.h"
|
|
#include "llong.h"
|
|
|
|
/*
|
|
* Copy the data from source to target
|
|
*/
|
|
|
|
int copyfile(Stream_t *Source, Stream_t *Target)
|
|
{
|
|
char buffer[8*16384];
|
|
int pos;
|
|
int ret, retw;
|
|
size_t len;
|
|
mt_size_t mt_len;
|
|
|
|
if (!Source){
|
|
fprintf(stderr,"Couldn't open source file\n");
|
|
return -1;
|
|
}
|
|
|
|
if (!Target){
|
|
fprintf(stderr,"Couldn't open target file\n");
|
|
return -1;
|
|
}
|
|
|
|
pos = 0;
|
|
GET_DATA(Source, 0, &mt_len, 0, 0);
|
|
if (mt_len & ~max_off_t_31) {
|
|
fprintf(stderr, "File too big\n");
|
|
return -1;
|
|
}
|
|
len = truncBytes32(mt_len);
|
|
while(1){
|
|
ret = READS(Source, buffer, (mt_off_t) pos, 8*16384);
|
|
if (ret < 0 ){
|
|
perror("file read");
|
|
return -1;
|
|
}
|
|
if(!ret)
|
|
break;
|
|
if(got_signal)
|
|
return -1;
|
|
if (ret == 0)
|
|
break;
|
|
if ((retw = force_write(Target, buffer, (mt_off_t) pos, ret)) != ret){
|
|
if(retw < 0 )
|
|
perror("write in copy");
|
|
else
|
|
fprintf(stderr,
|
|
"Short write %d instead of %d\n", retw,
|
|
ret);
|
|
if(errno == ENOSPC)
|
|
got_signal = 1;
|
|
return ret;
|
|
}
|
|
pos += ret;
|
|
}
|
|
return pos;
|
|
}
|