[Bug libc/18553] nice getpriority, setpriority namespace

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https://sourceware.org/bugzilla/show_bug.cgi?id=18553

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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=c36213513490412941512daccf447513e442651b

commit c36213513490412941512daccf447513e442651b
Author: Joseph Myers <joseph@codesourcery.com>
Date:   Wed Jun 17 20:22:39 2015 +0000

    Fix nice getpriority, setpriority namespace (bug 18553).

    nice (XPG3) calls getpriority and setpriority (in XPG4 but not XPG3,
    i.e. UX-shaded in XPG4).  This patch fixes this by making those
    functions into weak aliases of __* functions and calling the __*
    versions as needed.

    Tested for x86_64 and x86 (testsuite, and that disassembly of
    installed shared libraries is unchanged by this patch).

    This completes cleaning up the unsorted linknamespace test XFAILs.

        [BZ #18553]
        * resource/getpriority.c (getpriority): Rename to __getpriority
        and define as weak alias of __getpriority.
        * resource/setpriority.c (setpriority): Rename to __setpriority
        and define as weak alias of __setpriority.
        * sysdeps/mach/hurd/getpriority.c (getpriority): Rename to
        __getpriority and define as weak alias of __getpriority.
        * sysdeps/mach/hurd/setpriority.c (setpriority): Rename to
        __setpriority and define as weak alias of __setpriority.
        * sysdeps/unix/syscalls.list (getpriority): Use __getpriority as
        strong name.
        (setpriority): Use __setpriority as strong name.
        * sysdeps/unix/sysv/linux/getpriority.c (getpriority): Rename to
        __getpriority and define as weak alias of __getpriority.
        * include/sys/resource.h (__getpriority): Declare.  Use
        libc_hidden_proto.
        (__setpriority): Likewise.
        (getpriority): Don't use libc_hidden_proto.
        (setpriority): Likewise.
        * sysdeps/posix/nice.c (nice): Call __getpriority instead of
        getpriority.  Call __setpriority instead of setpriority.
        * conform/Makefile (test-xfail-XPG3/unistd.h/linknamespace):
        Remove variable.

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

Summary of changes:
 ChangeLog                             |   24 ++++++++++++++++++++++++
 NEWS                                  |    3 ++-
 conform/Makefile                      |    3 ---
 include/sys/resource.h                |   10 ++++++++--
 resource/getpriority.c                |    5 +++--
 resource/setpriority.c                |    5 +++--
 sysdeps/mach/hurd/getpriority.c       |    5 +++--
 sysdeps/mach/hurd/setpriority.c       |    5 +++--
 sysdeps/posix/nice.c                  |    6 +++---
 sysdeps/unix/syscalls.list            |    4 ++--
 sysdeps/unix/sysv/linux/getpriority.c |    5 +++--
 11 files changed, 54 insertions(+), 21 deletions(-)

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