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#include "lib.h"
#include <unistd.h>
#include <errno.h>
#include "sys9.h"
/*
* BUG: errno mapping
*/
off_t
lseek(int d, off_t offset, int whence)
{
long long n;
int flags;
flags = _fdinfo[d].flags;
if(flags&(FD_BUFFERED|FD_BUFFEREDX|FD_ISTTY)) {
errno = ESPIPE;
return -1;
}
n = _SEEK(d, offset, whence);
if(n < 0)
_syserrno();
return n;
}