Function SetHandleFilePos

outdated/sys/mac/macfile.c:130–161

}

static long
SetHandleFilePos(int fd, short whence, long pos)
{
    long curpos;

    if (!IsHandleFile(fd))
        return -1;

    fd -= FIRST_HF;

    curpos = theHandleFiles[fd].mark;
    switch (whence) {
    case SEEK_CUR:
        curpos += pos;
        break;
    case SEEK_END:
        curpos = theHandleFiles[fd].size - pos;
        break;
    default: /* set */
        curpos = pos;
        break;
    }

    if (curpos < 0)
        curpos = 0;
    else if (curpos > theHandleFiles[fd].size)
        curpos = theHandleFiles[fd].size;

    theHandleFiles[fd].mark = curpos;

    return curpos;
}

void
C2P(const char *c, unsigned char *p)