historical/m0-applesillicon.git/xnu-qemu-arm64-5.1.0/roms/openbios/fs/ext2/ext2_lseek.c

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2024-01-16 17:20:27 +00:00
/*
*
* (c) 2008-2009 Laurent Vivier <Laurent@lvivier.info>
*
* This file has been copied from EMILE, http://emile.sf.net
*
*/
#include "libext2.h"
#include "ext2.h"
int ext2_lseek(ext2_FILE *file, long offset, int whence)
{
long new_offset;
switch(whence)
{
case SEEK_SET:
new_offset = offset;
break;
case SEEK_CUR:
new_offset = file->offset + offset;
break;
case SEEK_END:
new_offset = file->inode->i_size + offset;
break;
default:
return -1;
}
if ( (new_offset < 0) ||
(new_offset > file->inode->i_size) )
return -1;
file->offset = new_offset;
return new_offset;
}