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Re: read() MAX_IO_SIZE bytes, more than SSIZE_MAX?

From
Joachim Schmitz <jojo@schmitz-digital.de>
Date
Feb 7, 2015, 19:14 UTC
Message-ID
<loom.20150207T201128-590@post.gmane.org>
In-Reply-To
<loom.20150207T174514-727@post.gmane.org>
Joachim Schmitz <jojo <at> schmitz-digital.de> writes:
<snip>
> and as a (rather strange) 
> consequence mmap() (from compat/mmap.c) fails with EACCESS (why 
EACCESS?), 
> because xpread() returns something > 0.

Seems mmap() should either set errno to EINVAL or not set it at all an just 'forward' whatever xpread() has set.

As per http://man7.org/linux/man-pages/man2/mmap.2.html mmap() sets EINVAL if (amongst other things) it doesn't like the value of len, exactly the case here.

bye, Jojo
Previous: Joachim Schmitz
Message 20 of 20 in “read() MAX_IO_SIZE bytes, more than SSIZE_MAX?”
  1. Joachim SchmitzFeb 7, 2015
  2. Joachim SchmitzFeb 7, 2015
  3. Torsten BögershausenFeb 7, 2015
  4. Joachim SchmitzFeb 7, 2015
  5. Joachim SchmitzFeb 7, 2015
  6. Torsten BögershausenFeb 7, 2015
  7. Junio C HamanoFeb 7, 2015
  8. Joachim SchmitzFeb 7, 2015
  9. Junio C HamanoFeb 8, 2015
  10. Randall S. BeckerFeb 8, 2015
  11. Joachim SchmitzFeb 8, 2015
  12. Eric SunshineFeb 8, 2015
  13. Junio C HamanoFeb 11, 2015
  14. Joachim SchmitzFeb 11, 2015
  15. Joachim SchmitzFeb 11, 2015
  16. Junio C HamanoFeb 11, 2015
  17. Randall S. BeckerFeb 7, 2015
  18. Randall S. BeckerFeb 7, 2015
  19. Joachim SchmitzFeb 7, 2015
  20. Joachim SchmitzFeb 7, 2015

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