EMILE/libiso9660/iso9660_lseek.c

37 lines
534 B
C
Raw Normal View History

2005-11-14 19:29:07 +00:00
/*
*
* (c) 2005 Laurent Vivier <LaurentVivier@wanadoo.fr>
*
*/
#include <stdio.h>
#include "libiso9660.h"
2005-11-15 09:34:37 +00:00
int iso9660_lseek(iso9660_FILE *file, long offset, int whence)
2005-11-14 19:29:07 +00:00
{
long new_offset;
switch(whence)
{
case SEEK_SET:
new_offset = offset;
break;
case SEEK_CUR:
2005-11-15 10:24:17 +00:00
new_offset = file->offset + offset;
2005-11-14 19:29:07 +00:00
break;
case SEEK_END:
new_offset = file->size + offset;
break;
default:
return -1;
}
if ( (new_offset < 0) || (new_offset > file->size) )
return -1;
2005-11-15 10:24:17 +00:00
file->offset = new_offset;
2005-11-14 19:29:07 +00:00
2005-11-15 10:24:17 +00:00
return new_offset;
2005-11-14 19:29:07 +00:00
}