[Bug 1839] call read with a write only file descriptor should fall with EBADF

[bugzilla-daemon at rtems.org]

https://www.rtems.org/bugzilla/show_bug.cgi?id=1839

--- Comment #1 from Joel Sherrill <joel.sherrill at oarcorp.com> 2011-07-18 14:41:42 CDT ---
Created attachment 1226
  --> https://www.rtems.org/bugzilla/attachment.cgi?id=1226
Patch for Review

This should address this issue.  Please review and verify it is OK.

Also please grep "rtems_libio_check_permissions" in libcsupport/src and verify
it is always correctly used to return the expected status.

rtems_libio_check_permissions - always returns EINVAL
rtems_libio_check_permissions_with_error - takes third parameter for errno

FWIW this is a weird POSIX-ism.  I checked another use of
rtems_libio_check_permissions() and you could return EBADF or EINVAL. 

Thanks.

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