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/* N.B.: The Alpha, under OSF/1, does *not* use size_t for the length,
or for the returned values from readv and writev. */
struct iovec {
void *iov_base;
int iov_len;
};
/* I'm assuming the iovec structures are const. I haven't verified
it. */
extern ssize_t readv (int, const struct iovec *, int);
extern ssize_t writev (int, const struct iovec *, int);
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