[Bug network/14841] RRSIG confuses getaddrinfo: getaddrinfo*.gaih_getanswer: got type "46"

["cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=14841

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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=65f6f938cd562a614a68e15d0581a34b177ec29d

commit 65f6f938cd562a614a68e15d0581a34b177ec29d
Author: Eric Rannaud <e@nanocritical.com>
Date:   Tue Feb 24 13:12:26 2015 +0530

    linux: open and openat ignore 'mode' with O_TMPFILE in flags

    Both open and openat load their last argument 'mode' lazily, using
    va_arg() only if O_CREAT is found in oflag. This is wrong, mode is also
    necessary if O_TMPFILE is in oflag.

    By chance on x86_64, the problem wasn't evident when using O_TMPFILE
    with open, as the 3rd argument of open, even when not loaded with
    va_arg, is left untouched in RDX, where the syscall expects it.

    However, openat was not so lucky, and O_TMPFILE couldn't be used: mode
    is the 4th argument, in RCX, but the syscall expects its 4th argument in
    a different register than the glibc wrapper, in R10.

    Introduce a macro __OPEN_NEEDS_MODE (oflag) to test if either O_CREAT or
    O_TMPFILE is set in oflag.

    Tested on Linux x86_64.

        [BZ #17523]
        * io/fcntl.h (__OPEN_NEEDS_MODE): New macro.
        * io/bits/fcntl2.h (open): Use it.
        (openat): Likewise.
        * io/open.c (__libc_open): Likewise.
        * io/open64.c (__libc_open64): Likewise.
        * io/open64_2.c (__open64_2): Likewise.
        * io/open_2.c (__open_2): Likewise.
        * io/openat.c (__openat): Likewise.
        * io/openat64.c (__openat64): Likewise.
        * io/openat64_2.c (__openat64_2): Likewise.
        * io/openat_2.c (__openat_2): Likewise.
        * sysdeps/mach/hurd/open.c (__libc_open): Likewise.
        * sysdeps/mach/hurd/openat.c (__openat): Likewise.
        * sysdeps/posix/open64.c (__libc_open64): Likewise.
        * sysdeps/unix/sysv/linux/dl-openat64.c (openat64): Likewise.
        * sysdeps/unix/sysv/linux/generic/open.c (__libc_open): Likewise.
        (__open_nocancel): Likewise.
        * sysdeps/unix/sysv/linux/generic/open64.c (__libc_open64): Likewise.
        * sysdeps/unix/sysv/linux/open64.c (__libc_open64): Likewise.
        * sysdeps/unix/sysv/linux/openat.c (__OPENAT): Likewise.

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=3e3002ffead0526d088c353f97475400367087da

commit 3e3002ffead0526d088c353f97475400367087da
Author: Siddhesh Poyarekar <siddhesh@redhat.com>
Date:   Tue Feb 24 12:57:26 2015 +0530

    Skip logging for DNSSEC responses [BZ 14841]

    DNSSEC defines a number of response types that one me expect when the
    DO bit is set.  We don't process any of them, but since we do allow
    setting the DO bit, skip them without logging an error since it is
    only a nuisance.

    Tested on x86_64.

        [BZ #14841]
        * resolv/gethnamaddr.c (getanswer): Skip logging if
        RES_USE_DNSSEC is set.
        * resolv/nss_dns/dns-host.c (getanswer_r): Likewise.

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog                                |   31 ++++++++++++++++++++++++++++++
 NEWS                                     |    6 ++--
 io/bits/fcntl2.h                         |   18 ++++++++--------
 io/fcntl.h                               |   14 +++++++++++-
 io/open.c                                |    4 +-
 io/open64.c                              |    4 +-
 io/open64_2.c                            |    4 +-
 io/open_2.c                              |    4 +-
 io/openat.c                              |    4 +-
 io/openat64.c                            |    4 +-
 io/openat64_2.c                          |    4 +-
 io/openat_2.c                            |    4 +-
 resolv/gethnamaddr.c                     |   25 +++++++++--------------
 resolv/nss_dns/dns-host.c                |   23 +++++++--------------
 sysdeps/mach/hurd/open.c                 |    4 +-
 sysdeps/mach/hurd/openat.c               |    4 +-
 sysdeps/posix/open64.c                   |    4 +-
 sysdeps/unix/sysv/linux/dl-openat64.c    |    2 +-
 sysdeps/unix/sysv/linux/generic/open.c   |    6 ++--
 sysdeps/unix/sysv/linux/generic/open64.c |    4 +-
 sysdeps/unix/sysv/linux/open64.c         |    4 +-
 sysdeps/unix/sysv/linux/openat.c         |    6 ++--
 22 files changed, 106 insertions(+), 77 deletions(-)

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