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Date:      Fri, 3 Jul 1998 11:41:02 -0500 (CDT)
From:      Joel Ray Holveck <joelh@gnu.org>
To:        freebsd-questions@FreeBSD.ORG
Subject:   Dynamic scatter / gather operations
Message-ID:  <199807031641.LAA10987@detlev.UUCP>

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Is it possible / portable / sane for a readv to affect its own iov?
That is, something like the following:

   struct iovec iov[2];
   char string[MAXLEN];
   iov[0].iov_len = sizeof(iov[1].iov_len);
   iov[0].iov_base = &(iov[1].iov_len);
   iov[1].iov_base = string;
   readv(fd, iov, 2);

Happy hacking,
joelh

-- 
Joel Ray Holveck - joelh@gnu.org - http://www.wp.com/piquan
   Fourth law of programming:
   Anything that can go wrong wi
sendmail: segmentation violation - core dumped

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