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/* posix */
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#include <sys/types.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <errno.h>
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#include <string.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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/* bsd extensions */
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#include <sys/uio.h>
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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int
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ioctl(int fd, unsigned long request, void* arg)
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{
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	struct stat d;
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	if(request == FIONREAD) {
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		if(fstat(fd, &d) < 0) {
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			errno = EBADF;
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			return -1;
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		}
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		/* this works if the file is buffered somehow */
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		*(long*)arg = d.st_size;
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		return 0;
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	} else {
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		errno = EINVAL;
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		return -1;
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	}
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}