[v4] sysvipc: Set ipc_perm mode as mode_t (BZ#18231)
diff mbox series

Message ID 20190829151954.15672-1-adhemerval.zanella@linaro.org
State New
Headers show
Series
  • [v4] sysvipc: Set ipc_perm mode as mode_t (BZ#18231)
Related show

Commit Message

Adhemerval Zanella Aug. 29, 2019, 3:19 p.m. UTC
Changes from previous version:

  - Add symbols version updates for 2.31.  I also added the requires
    Versions definitions for the requires ABIs (for some reason ld in
    some cases was not complaining for the missing definitions).

  - Corrected some CL bits regarding the new __ASSUME name.

--

This patch sets the mode field in ipc_perm as mode_t for all architectures,
as POSIX specification [1].  The changes required are as follow:

  1. It moves the ipc_perm definition out of ipc.h to its own header
     ipc_perm.h.  It also allows consolidate the IPC_* definition on
     only one header.

  2. The generic implementation follow the kernel ipc64_perm size so the
     syscall can be made directly without temporary buffer copy.  However,
     since glibc defines the MODE field as mode_t, it omits the __PAD1 field
     (since glibc does not export mode_t as 16-bit for any architecture).

     It is a two-fold improvement:

     2.1. New implementation which follow Linux UAPI will not need to
	  provide an arch-specific ipc-perm.h header neither wrongly
          use the wrong 16-bit definition from previous default ipc.h
	  (as csky did).

     2.1. It allows consolidate ipc_perm definition for architectures that
          already provide mode_t as 32-bit.

  3. All kernel ABIs for the supported architectures already provides the
     expected padding for mode type extension to 32-bit.  However, some
     architectures the padding has the wrong placement, so it requires
     the ipc control routines (msgctl, semctl, and shmctl) to adjust the
     mode field accordingly.  Currently they are armeb, microblaze, m68k,
     s390, and sheb.

     A new assume is added, __ASSUME_SYSVIPC_BROKEN_MODE_T, which the
     required ABIs define.

  4. For the ABIs that define __ASSUME_SYSVIPC_BROKEN_MODE_T, it also
     require compat symbols that do not adjust the mode field.

Checked on arm-linux-gnueabihf, aarch64-linux-gnu, powerpc64le-linux-gnu,
and x86_64-linux-gnu. I also checked the sysvipc tests on hppa-linux-gnu,
sh4-linux-gnu, s390x-linux-gnu, and s390-linux-gnu.

I also did a sanity test against armeb qemu usermode for the sysvipc
tests.

	[BZ #18231]
	* sysdeps/unix/sysv/linux/Makefile (sysdep_headers): Add
	bits/ipc-perm.h.
	* sysdeps/unix/sysv/linux/aarch64/bits/ipc.h: Remove file.
	* sysdeps/unix/sysv/linux/alpha/bits/ipc.h: Likewise.
	* sysdeps/unix/sysv/linux/hppa/bits/ipc.h: Likewise.
	* sysdeps/unix/sysv/linux/ia64/bits/ipc.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/bits/ipc.h: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/bits/ipc.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/bits/ipc.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/bits/ipc.h: Likewise.
	* sysdeps/unix/sysv/linux/arm/kernel-features.h
	[__BYTE_ORDER == __BIG_ENDIAN] (__ASSUME_SYSVIPC_BROKEN_MODE_T):
	Define.
	* sysdeps/sysv/linux/microblaze/kernel-features.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/kernel-features.h
	[!__s390x__] (__ASSUME_SYSVIPC_BROKEN_MODE_T): Define.
	* sysdeps/unix/sysv/linux/sh/kernel-features.h
	(__ASSUME_SYSVIPC_BROKEN_MODE_T): Define.
	* sysdeps/unix/sysv/linux/m68k/kernel-features.h: Likewise.
	* sysdeps/unix/sysv/linux/bits/ipc-perm.h: New file.
	* sysdeps/unix/sysv/linux/powerpc/bits/ipc-perm.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/bits/ipc-perm.h: Likewise.
	* sysdeps/unix/sysv/linux/bits/ipc.h (ipc_perm): Move to
	bits/ipc-perm.h.
	* sysdeps/unix/sysv/linux/hppa/bits/ipc-perm.h: New file.
	* sysdeps/unix/sysv/linux/kernel-features.h: Add comment about
	__ASSUME_SYSVIPC_BROKEN_MODE_T semantic.
	* sysdeps/unix/sysv/linux/msgctl.c (DEFAULT_VERSION): Define as
	2.31 if __ASSUME_SYSVIPC_BROKEN_MODE_T is defined.
	(msgctl_syscall, __msgctl_mode16): New symbol.
	(__new_msgctl): Add bits for __ASSUME_SYSVIPC_BROKEN_MODE_T.
	* sysdeps/unix/sysv/linux/semctl.c: Likewise.
	* sysdeps/unix/sysv/linux/shmctl.c: Likewise.
	* sysdeps/unix/sysv/linux/arm/be/libc.abilist (GLIBC_2.31): Add
	msgctl, semctl, and shmctl.
	* sysdeps/sysv/linux/microblaze/be/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist: Likewise.
	* sysdeps/unix/sysv/linux/sh/be/libc.abilist: Likewise.
	* conform/data/sys/ipc.h-data: Only xfail {struct ipc_perm} mode_t
	mode for Hurd.
	* sysdeps/unix/sysv/linux/arm/be/Versions: New file.
	* sysdeps/unix/sysv/linux/microblaze/be/Versions: Likewise.
	* sysdeps/unix/sysv/linux/sh/be/Versions: Likewise.

[1] http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/sys_ipc.h.html
---
 ChangeLog                                     | 45 ++++++++++
 conform/data/sys/ipc.h-data                   |  3 +-
 sysdeps/unix/sysv/linux/Makefile              |  3 +-
 sysdeps/unix/sysv/linux/aarch64/bits/ipc.h    | 54 ------------
 sysdeps/unix/sysv/linux/alpha/bits/ipc.h      | 54 ------------
 sysdeps/unix/sysv/linux/arm/be/Versions       |  5 ++
 sysdeps/unix/sysv/linux/arm/be/libc.abilist   |  3 +
 sysdeps/unix/sysv/linux/arm/kernel-features.h |  5 ++
 sysdeps/unix/sysv/linux/bits/ipc-perm.h       | 40 +++++++++
 sysdeps/unix/sysv/linux/bits/ipc.h            | 17 +---
 sysdeps/unix/sysv/linux/hppa/bits/ipc-perm.h  | 37 ++++++++
 sysdeps/unix/sysv/linux/hppa/bits/ipc.h       | 62 --------------
 sysdeps/unix/sysv/linux/ia64/bits/ipc.h       | 53 ------------
 sysdeps/unix/sysv/linux/kernel-features.h     |  8 ++
 .../sysv/linux/m68k/coldfire/libc.abilist     |  3 +
 .../unix/sysv/linux/m68k/kernel-features.h    |  1 +
 .../unix/sysv/linux/m68k/m680x0/libc.abilist  |  3 +
 .../unix/sysv/linux/microblaze/be/Versions    |  5 ++
 .../sysv/linux/microblaze/be/libc.abilist     |  3 +
 .../sysv/linux/microblaze/kernel-features.h   |  5 ++
 sysdeps/unix/sysv/linux/mips/bits/ipc.h       | 54 ------------
 sysdeps/unix/sysv/linux/msgctl.c              | 56 ++++++++++++-
 .../linux/powerpc/bits/{ipc.h => ipc-perm.h}  | 24 +-----
 sysdeps/unix/sysv/linux/s390/bits/ipc.h       | 60 -------------
 .../unix/sysv/linux/s390/kernel-features.h    |  3 +
 .../unix/sysv/linux/s390/s390-32/libc.abilist |  3 +
 sysdeps/unix/sysv/linux/semctl.c              | 84 +++++++++++++++++--
 sysdeps/unix/sysv/linux/sh/be/Versions        |  5 ++
 sysdeps/unix/sysv/linux/sh/be/libc.abilist    |  3 +
 sysdeps/unix/sysv/linux/sh/kernel-features.h  |  5 ++
 sysdeps/unix/sysv/linux/shmctl.c              | 60 +++++++++++--
 .../linux/sparc/bits/{ipc.h => ipc-perm.h}    | 31 +------
 32 files changed, 376 insertions(+), 421 deletions(-)
 delete mode 100644 sysdeps/unix/sysv/linux/aarch64/bits/ipc.h
 delete mode 100644 sysdeps/unix/sysv/linux/alpha/bits/ipc.h
 create mode 100644 sysdeps/unix/sysv/linux/arm/be/Versions
 create mode 100644 sysdeps/unix/sysv/linux/bits/ipc-perm.h
 create mode 100644 sysdeps/unix/sysv/linux/hppa/bits/ipc-perm.h
 delete mode 100644 sysdeps/unix/sysv/linux/hppa/bits/ipc.h
 delete mode 100644 sysdeps/unix/sysv/linux/ia64/bits/ipc.h
 create mode 100644 sysdeps/unix/sysv/linux/microblaze/be/Versions
 delete mode 100644 sysdeps/unix/sysv/linux/mips/bits/ipc.h
 rename sysdeps/unix/sysv/linux/powerpc/bits/{ipc.h => ipc-perm.h} (62%)
 delete mode 100644 sysdeps/unix/sysv/linux/s390/bits/ipc.h
 create mode 100644 sysdeps/unix/sysv/linux/sh/be/Versions
 rename sysdeps/unix/sysv/linux/sparc/bits/{ipc.h => ipc-perm.h} (59%)

Comments

Andreas Schwab Aug. 29, 2019, 3:26 p.m. UTC | #1
On Aug 29 2019, Adhemerval Zanella <adhemerval.zanella@linaro.org> wrote:

> Changes from previous version:
>
>   - Add symbols version updates for 2.31.

Still 2.30 symbols.

Andreas.
Adhemerval Zanella Aug. 29, 2019, 3:31 p.m. UTC | #2
On 29/08/2019 12:26, Andreas Schwab wrote:
> On Aug 29 2019, Adhemerval Zanella <adhemerval.zanella@linaro.org> wrote:
> 
>> Changes from previous version:
>>
>>   - Add symbols version updates for 2.31.
> 
> Still 2.30 symbols.
> 
> Andreas.
> 

Sigh, sorry about that. I will ran make-update abi on m68k abis and update
the patch.

Patch
diff mbox series

diff --git a/conform/data/sys/ipc.h-data b/conform/data/sys/ipc.h-data
index 09e8f68f8e..1364b07e87 100644
--- a/conform/data/sys/ipc.h-data
+++ b/conform/data/sys/ipc.h-data
@@ -6,8 +6,7 @@  xfail[i386-gnu]-element {struct ipc_perm} uid_t uid
 xfail[i386-gnu]-element {struct ipc_perm} gid_t gid
 xfail[i386-gnu]-element {struct ipc_perm} uid_t cuid
 xfail[i386-gnu]-element {struct ipc_perm} gid_t cgid
-// Bug 18231: wrong type for mode member.
-xfail-element {struct ipc_perm} mode_t mode
+xfail[i386-gnu]-element {struct ipc_perm} mode_t mode
 
 type uid_t
 type gid_t
diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile
index 40db26e733..4dd5acf8da 100644
--- a/sysdeps/unix/sysv/linux/Makefile
+++ b/sysdeps/unix/sysv/linux/Makefile
@@ -48,7 +48,8 @@  sysdep_headers += sys/mount.h sys/acct.h sys/sysctl.h \
 		  bits/termios-c_iflag.h bits/termios-c_oflag.h \
 		  bits/termios-baud.h bits/termios-c_cflag.h \
 		  bits/termios-c_lflag.h bits/termios-tcflow.h \
-		  bits/termios-misc.h
+		  bits/termios-misc.h \
+		  bits/ipc-perm.h
 
 tests += tst-clone tst-clone2 tst-clone3 tst-fanotify tst-personality \
 	 tst-quota tst-sync_file_range tst-sysconf-iov_max tst-ttyname \
diff --git a/sysdeps/unix/sysv/linux/aarch64/bits/ipc.h b/sysdeps/unix/sysv/linux/aarch64/bits/ipc.h
deleted file mode 100644
index b91377402c..0000000000
--- a/sysdeps/unix/sysv/linux/aarch64/bits/ipc.h
+++ /dev/null
@@ -1,54 +0,0 @@ 
-/* Copyright (C) 1995-2019 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#ifndef _SYS_IPC_H
-# error "Never use <bits/ipc.h> directly; include <sys/ipc.h> instead."
-#endif
-
-#include <bits/types.h>
-
-/* Mode bits for `msgget', `semget', and `shmget'.  */
-#define IPC_CREAT	01000		/* Create key if key does not exist. */
-#define IPC_EXCL	02000		/* Fail if key exists.  */
-#define IPC_NOWAIT	04000		/* Return error on wait.  */
-
-/* Control commands for `msgctl', `semctl', and `shmctl'.  */
-#define IPC_RMID	0		/* Remove identifier.  */
-#define IPC_SET		1		/* Set `ipc_perm' options.  */
-#define IPC_STAT	2		/* Get `ipc_perm' options.  */
-#ifdef __USE_GNU
-# define IPC_INFO	3		/* See ipcs.  */
-#endif
-
-/* Special key values.  */
-#define IPC_PRIVATE	((__key_t) 0)	/* Private key.  */
-
-
-/* Data structure used to pass permission information to IPC operations.  */
-struct ipc_perm
-  {
-    __key_t __key;			/* Key.  */
-    __uid_t uid;			/* Owner's user ID.  */
-    __gid_t gid;			/* Owner's group ID.  */
-    __uid_t cuid;			/* Creator's user ID.  */
-    __gid_t cgid;			/* Creator's group ID.  */
-    unsigned int mode;			/* Read/write permission.  */
-    unsigned short int __seq;		/* Sequence number.  */
-    unsigned short int __pad1;
-    __syscall_ulong_t __glibc_reserved1;
-    __syscall_ulong_t __glibc_reserved2;
-  };
diff --git a/sysdeps/unix/sysv/linux/alpha/bits/ipc.h b/sysdeps/unix/sysv/linux/alpha/bits/ipc.h
deleted file mode 100644
index 52ebcc7e97..0000000000
--- a/sysdeps/unix/sysv/linux/alpha/bits/ipc.h
+++ /dev/null
@@ -1,54 +0,0 @@ 
-/* Copyright (C) 1995-2019 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library.  If not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#ifndef _SYS_IPC_H
-# error "Never use <bits/ipc.h> directly; include <sys/ipc.h> instead."
-#endif
-
-#include <bits/types.h>
-
-/* Mode bits for `msgget', `semget', and `shmget'.  */
-#define IPC_CREAT	01000		/* Create key if key does not exist. */
-#define IPC_EXCL	02000		/* Fail if key exists.  */
-#define IPC_NOWAIT	04000		/* Return error on wait.  */
-
-/* Control commands for `msgctl', `semctl', and `shmctl'.  */
-#define IPC_RMID	0		/* Remove identifier.  */
-#define IPC_SET		1		/* Set `ipc_perm' options.  */
-#define IPC_STAT	2		/* Get `ipc_perm' options.  */
-#ifdef __USE_GNU
-# define IPC_INFO	3		/* See ipcs.  */
-#endif
-
-/* Special key values.  */
-#define IPC_PRIVATE	((__key_t) 0)	/* Private key.  */
-
-
-/* Data structure used to pass permission information to IPC operations.  */
-struct ipc_perm
-  {
-    __key_t __key;			/* Key.  */
-    unsigned int uid;			/* Owner's user ID.  */
-    unsigned int gid;			/* Owner's group ID.  */
-    unsigned int cuid;			/* Creator's user ID.  */
-    unsigned int cgid;			/* Creator's group ID.  */
-    unsigned int mode;			/* Read/write permission.  */
-    unsigned short int __seq;		/* Sequence number.  */
-    unsigned short int __pad1;
-    unsigned long int __glibc_reserved1;
-    unsigned long int __glibc_reserved2;
-  };
diff --git a/sysdeps/unix/sysv/linux/arm/be/Versions b/sysdeps/unix/sysv/linux/arm/be/Versions
new file mode 100644
index 0000000000..a50cd57630
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/arm/be/Versions
@@ -0,0 +1,5 @@ 
+libc {
+  GLIBC_2.31 {
+    msgctl; semctl; shmctl;
+  }
+}
diff --git a/sysdeps/unix/sysv/linux/arm/be/libc.abilist b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
index bc3df8dcea..2a24b4996f 100644
--- a/sysdeps/unix/sysv/linux/arm/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
@@ -130,6 +130,9 @@  GLIBC_2.30 getdents64 F
 GLIBC_2.30 gettid F
 GLIBC_2.30 tgkill F
 GLIBC_2.30 twalk_r F
+GLIBC_2.31 msgctl F
+GLIBC_2.31 semctl F
+GLIBC_2.31 shmctl F
 GLIBC_2.4 _Exit F
 GLIBC_2.4 _IO_2_1_stderr_ D 0xa0
 GLIBC_2.4 _IO_2_1_stdin_ D 0xa0
diff --git a/sysdeps/unix/sysv/linux/arm/kernel-features.h b/sysdeps/unix/sysv/linux/arm/kernel-features.h
index 4220adff37..c0dcd6ded0 100644
--- a/sysdeps/unix/sysv/linux/arm/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/arm/kernel-features.h
@@ -17,6 +17,7 @@ 
    License along with the GNU C Library.  If not, see
    <http://www.gnu.org/licenses/>.  */
 
+#include <endian.h>
 #include_next <kernel-features.h>
 
 /* The ARM kernel before 3.14.3 may or may not support
@@ -49,3 +50,7 @@ 
 
 #undef __ASSUME_CLONE_DEFAULT
 #define __ASSUME_CLONE_BACKWARDS	1
+
+#if __BYTE_ORDER == __BIG_ENDIAN
+# define __ASSUME_SYSVIPC_BROKEN_MODE_T
+#endif
diff --git a/sysdeps/unix/sysv/linux/bits/ipc-perm.h b/sysdeps/unix/sysv/linux/bits/ipc-perm.h
new file mode 100644
index 0000000000..2c3f49f292
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/bits/ipc-perm.h
@@ -0,0 +1,40 @@ 
+/* struct ipc_perm definition.
+   Copyright (C) 2019 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _SYS_IPC_H
+# error "Never use <bits/ipc-perm.h> directly; include <sys/ipc.h> instead."
+#endif
+
+/* Data structure used to pass permission information to IPC operations.
+   It follows the kernel ipc64_perm size so the syscall can be made directly
+   without temporary buffer copy.  However, since glibc defines the MODE
+   field as mode_t per POSIX definition (BZ#18231), it omits the __PAD1 field
+   (since glibc does not export mode_t as 16-bit for any architecture).  */
+struct ipc_perm
+{
+  __key_t __key;				/* Key.  */
+  __uid_t uid;					/* Owner's user ID.  */
+  __gid_t gid;					/* Owner's group ID.  */
+  __uid_t cuid;					/* Creator's user ID.  */
+  __gid_t cgid;					/* Creator's group ID.  */
+  __mode_t mode;				/* Read/write permission.  */
+  unsigned short int __seq;			/* Sequence number.  */
+  unsigned short int __pad2;
+  __syscall_ulong_t __glibc_reserved1;
+  __syscall_ulong_t __glibc_reserved2;
+};
diff --git a/sysdeps/unix/sysv/linux/bits/ipc.h b/sysdeps/unix/sysv/linux/bits/ipc.h
index 6868b3eb45..af2098c942 100644
--- a/sysdeps/unix/sysv/linux/bits/ipc.h
+++ b/sysdeps/unix/sysv/linux/bits/ipc.h
@@ -37,19 +37,4 @@ 
 /* Special key values.  */
 #define IPC_PRIVATE	((__key_t) 0)	/* Private key.  */
 
-
-/* Data structure used to pass permission information to IPC operations.  */
-struct ipc_perm
-  {
-    __key_t __key;			/* Key.  */
-    __uid_t uid;			/* Owner's user ID.  */
-    __gid_t gid;			/* Owner's group ID.  */
-    __uid_t cuid;			/* Creator's user ID.  */
-    __gid_t cgid;			/* Creator's group ID.  */
-    unsigned short int mode;		/* Read/write permission.  */
-    unsigned short int __pad1;
-    unsigned short int __seq;		/* Sequence number.  */
-    unsigned short int __pad2;
-    __syscall_ulong_t __glibc_reserved1;
-    __syscall_ulong_t __glibc_reserved2;
-  };
+#include <bits/ipc-perm.h>
diff --git a/sysdeps/unix/sysv/linux/hppa/bits/ipc-perm.h b/sysdeps/unix/sysv/linux/hppa/bits/ipc-perm.h
new file mode 100644
index 0000000000..f29fc1689c
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/hppa/bits/ipc-perm.h
@@ -0,0 +1,37 @@ 
+/* struct ipc_perm definition.
+   Copyright (C) 2019 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _SYS_IPC_H
+# error "Never use <bits/ipc-perm.h> directly; include <sys/ipc.h> instead."
+#endif
+
+/* Data structure used to pass permission information to IPC operations.  */
+struct ipc_perm
+  {
+    __key_t __key;                      /* Key.  */
+    __uid_t uid;                        /* Owner's user ID.  */
+    __gid_t gid;                        /* Owner's group ID.  */
+    __uid_t cuid;                       /* Creator's user ID.  */
+    __gid_t cgid;                       /* Creator's group ID.  */
+    __mode_t mode;                      /* Read/write permission.  */
+    unsigned short int __pad2;
+    unsigned short int __seq;           /* Sequence number.  */
+    unsigned int __pad3;
+    __extension__ unsigned long long int __glibc_reserved1;
+    __extension__ unsigned long long int __glibc_reserved2;
+  };
diff --git a/sysdeps/unix/sysv/linux/hppa/bits/ipc.h b/sysdeps/unix/sysv/linux/hppa/bits/ipc.h
deleted file mode 100644
index 889f882415..0000000000
--- a/sysdeps/unix/sysv/linux/hppa/bits/ipc.h
+++ /dev/null
@@ -1,62 +0,0 @@ 
-/* Copyright (C) 1995-2019 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library.  If not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#ifndef _SYS_IPC_H
-# error "Never use <bits/ipc.h> directly; include <sys/ipc.h> instead."
-#endif
-
-#include <bits/types.h>
-#include <bits/wordsize.h>
-
-/* Mode bits for `msgget', `semget', and `shmget'.  */
-#define IPC_CREAT	01000		/* Create key if key does not exist. */
-#define IPC_EXCL	02000		/* Fail if key exists.  */
-#define IPC_NOWAIT	04000		/* Return error on wait.  */
-
-/* Control commands for `msgctl', `semctl', and `shmctl'.  */
-#define IPC_RMID	0		/* Remove identifier.  */
-#define IPC_SET		1		/* Set `ipc_perm' options.  */
-#define IPC_STAT	2		/* Get `ipc_perm' options.  */
-#ifdef __USE_GNU
-# define IPC_INFO	3		/* See ipcs.  */
-#endif
-
-/* Special key values.  */
-#define IPC_PRIVATE	((__key_t) 0)	/* Private key.  */
-
-
-/* Data structure used to pass permission information to IPC operations.  */
-struct ipc_perm
-  {
-    __key_t __key;			/* Key.  */
-    __uid_t uid;			/* Owner's user ID.  */
-    __gid_t gid;			/* Owner's group ID.  */
-    __uid_t cuid;			/* Creator's user ID.  */
-    __gid_t cgid;			/* Creator's group ID.  */
-#if __WORDSIZE == 32
-    unsigned short int __pad1;
-    unsigned short int mode;		/* Read/write permission.  */
-    unsigned short int __pad2;
-#else
-    __mode_t mode;			/* Read/write permission.  */
-    unsigned short int __pad2;
-#endif
-    unsigned short int __seq;		/* Sequence number.  */
-    unsigned int __pad3;
-    __extension__ unsigned long long int __glibc_reserved1;
-    __extension__ unsigned long long int __glibc_reserved2;
-  };
diff --git a/sysdeps/unix/sysv/linux/ia64/bits/ipc.h b/sysdeps/unix/sysv/linux/ia64/bits/ipc.h
deleted file mode 100644
index 6f9705e28a..0000000000
--- a/sysdeps/unix/sysv/linux/ia64/bits/ipc.h
+++ /dev/null
@@ -1,53 +0,0 @@ 
-/* Copyright (C) 2000-2019 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-	Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#ifndef _SYS_IPC_H
-# error "Never use <bits/ipc.h> directly; include <sys/ipc.h> instead."
-#endif
-
-#include <sys/types.h>
-
-/* Mode bits for `msgget', `semget', and `shmget'.  */
-#define IPC_CREAT	01000		/* Create key if key does not exist. */
-#define IPC_EXCL	02000		/* Fail if key exists.  */
-#define IPC_NOWAIT	04000		/* Return error on wait.  */
-
-/* Control commands for `msgctl', `semctl', and `shmctl'.  */
-#define IPC_RMID	0		/* Remove identifier.  */
-#define IPC_SET		1		/* Set `ipc_perm' options.  */
-#define IPC_STAT	2		/* Get `ipc_perm' options.  */
-#define IPC_INFO	3		/* See ipcs.  */
-
-/* Special key values.  */
-#define IPC_PRIVATE	((__key_t) 0)	/* Private key.  */
-
-
-/* Data structure used to pass permission information to IPC operations.  */
-struct ipc_perm
-  {
-    __key_t __key;			/* Key.  */
-    __uid_t uid;			/* Owner's user ID.  */
-    __gid_t gid;			/* Owner's group ID.  */
-    __uid_t cuid;			/* Creator's user ID.  */
-    __gid_t cgid;			/* Creator's group ID.  */
-    __mode_t mode;			/* Read/write permission.  */
-    unsigned short int __seq;		/* Sequence number.  */
-    unsigned short int __pad1;
-    unsigned long int __glibc_reserved1;
-    unsigned long int __glibc_reserved2;
-  };
diff --git a/sysdeps/unix/sysv/linux/kernel-features.h b/sysdeps/unix/sysv/linux/kernel-features.h
index 1518bb5228..91152158f1 100644
--- a/sysdeps/unix/sysv/linux/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/kernel-features.h
@@ -81,6 +81,14 @@ 
    either support ipc syscall and/or all the ipc correspondent syscalls.  */
 #define __ASSUME_DIRECT_SYSVIPC_SYSCALLS	1
 
+/* All supported architectures reserve a 32-bit for MODE field in sysvipc
+   ipc_perm.  However, some kernel ABI interfaces still expect a 16-bit
+   field.  This is only an issue if arch-defined IPC_PERM padding is on a
+   wrong position regarding endianness.  In this case, the IPC control
+   routines (msgctl, semctl, and semtctl) requires to shift the value to
+   correct place.
+   The ABIs that requires it define __ASSUME_SYSVIPC_BROKEN_MODE_T.  */
+
 /* Support for p{read,write}v2 was added in 4.6.  However Linux default
    implementation does not assume the __ASSUME_* and instead use a fallback
    implementation based on p{read,write}v and returning an error for
diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
index 05633b3cb8..a2be040dfc 100644
--- a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
@@ -129,6 +129,9 @@  GLIBC_2.29 posix_spawn_file_actions_addchdir_np F
 GLIBC_2.29 posix_spawn_file_actions_addfchdir_np F
 GLIBC_2.30 getdents64 F
 GLIBC_2.30 gettid F
+GLIBC_2.30 msgctl F
+GLIBC_2.30 semctl F
+GLIBC_2.30 shmctl F
 GLIBC_2.30 tgkill F
 GLIBC_2.30 twalk_r F
 GLIBC_2.4 _Exit F
diff --git a/sysdeps/unix/sysv/linux/m68k/kernel-features.h b/sysdeps/unix/sysv/linux/m68k/kernel-features.h
index 1976724362..a130ce1b7c 100644
--- a/sysdeps/unix/sysv/linux/m68k/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/m68k/kernel-features.h
@@ -52,3 +52,4 @@ 
 
 /* m68k only supports ipc syscall.  */
 #undef __ASSUME_DIRECT_SYSVIPC_SYSCALLS
+#define __ASSUME_SYSVIPC_BROKEN_MODE_T
diff --git a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
index 47eb7b4608..6f8f77de1d 100644
--- a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
@@ -2148,6 +2148,9 @@  GLIBC_2.3.4 xdr_quad_t F
 GLIBC_2.3.4 xdr_u_quad_t F
 GLIBC_2.30 getdents64 F
 GLIBC_2.30 gettid F
+GLIBC_2.30 msgctl F
+GLIBC_2.30 semctl F
+GLIBC_2.30 shmctl F
 GLIBC_2.30 tgkill F
 GLIBC_2.30 twalk_r F
 GLIBC_2.4 __confstr_chk F
diff --git a/sysdeps/unix/sysv/linux/microblaze/be/Versions b/sysdeps/unix/sysv/linux/microblaze/be/Versions
new file mode 100644
index 0000000000..a50cd57630
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/microblaze/be/Versions
@@ -0,0 +1,5 @@ 
+libc {
+  GLIBC_2.31 {
+    msgctl; semctl; shmctl;
+  }
+}
diff --git a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
index f7ced487f7..ac55b0acd7 100644
--- a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
@@ -2137,3 +2137,6 @@  GLIBC_2.30 getdents64 F
 GLIBC_2.30 gettid F
 GLIBC_2.30 tgkill F
 GLIBC_2.30 twalk_r F
+GLIBC_2.31 msgctl F
+GLIBC_2.31 semctl F
+GLIBC_2.31 shmctl F
diff --git a/sysdeps/unix/sysv/linux/microblaze/kernel-features.h b/sysdeps/unix/sysv/linux/microblaze/kernel-features.h
index a787409295..1be0c5eb18 100644
--- a/sysdeps/unix/sysv/linux/microblaze/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/microblaze/kernel-features.h
@@ -15,6 +15,7 @@ 
    License along with the GNU C Library.  If not, see
    <http://www.gnu.org/licenses/>.  */
 
+#include <endian.h>
 
 /* All supported kernel versions for MicroBlaze have these syscalls.  */
 #define __ASSUME_SOCKET_SYSCALL		1
@@ -67,3 +68,7 @@ 
 
 #undef __ASSUME_CLONE_DEFAULT
 #define __ASSUME_CLONE_BACKWARDS3
+
+#if __BYTE_ORDER == __BIG_ENDIAN
+# define __ASSUME_SYSVIPC_BROKEN_MODE_T
+#endif
diff --git a/sysdeps/unix/sysv/linux/mips/bits/ipc.h b/sysdeps/unix/sysv/linux/mips/bits/ipc.h
deleted file mode 100644
index 5f8985fadd..0000000000
--- a/sysdeps/unix/sysv/linux/mips/bits/ipc.h
+++ /dev/null
@@ -1,54 +0,0 @@ 
-/* Copyright (C) 1995-2019 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library.  If not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#ifndef _SYS_IPC_H
-# error "Never use <bits/ipc.h> directly; include <sys/ipc.h> instead."
-#endif
-
-#include <bits/types.h>
-
-/* Mode bits for `msgget', `semget', and `shmget'.  */
-#define IPC_CREAT	01000		/* Create key if key does not exist. */
-#define IPC_EXCL	02000		/* Fail if key exists.	*/
-#define IPC_NOWAIT	04000		/* Return error on wait.  */
-
-/* Control commands for `msgctl', `semctl', and `shmctl'.  */
-#define IPC_RMID	0		/* Remove identifier.  */
-#define IPC_SET		1		/* Set `ipc_perm' options.  */
-#define IPC_STAT	2		/* Get `ipc_perm' options.  */
-#ifdef __USE_GNU
-# define IPC_INFO	3		/* See ipcs.  */
-#endif
-
-/* Special key values.	*/
-#define IPC_PRIVATE	((__key_t) 0)	/* Private key.	 */
-
-
-/* Data structure used to pass permission information to IPC operations.  */
-struct ipc_perm
-  {
-    __key_t __key;			/* Key.  */
-    unsigned int uid;			/* Owner's user ID.  */
-    unsigned int gid;			/* Owner's group ID.  */
-    unsigned int cuid;			/* Creator's user ID.  */
-    unsigned int cgid;			/* Creator's group ID.	*/
-    unsigned int mode;			/* Read/write permission.  */
-    unsigned short int __seq;		/* Sequence number.  */
-    unsigned short int __pad1;
-    unsigned long int __glibc_reserved1;
-    unsigned long int __glibc_reserved2;
-};
diff --git a/sysdeps/unix/sysv/linux/msgctl.c b/sysdeps/unix/sysv/linux/msgctl.c
index 2d49567686..7c2ac8b82c 100644
--- a/sysdeps/unix/sysv/linux/msgctl.c
+++ b/sysdeps/unix/sysv/linux/msgctl.c
@@ -23,11 +23,15 @@ 
 #include <errno.h>
 
 #ifndef DEFAULT_VERSION
-# define DEFAULT_VERSION GLIBC_2_2
+# ifndef __ASSUME_SYSVIPC_BROKEN_MODE_T
+#  define DEFAULT_VERSION GLIBC_2_2
+# else
+#  define DEFAULT_VERSION GLIBC_2_31
+# endif
 #endif
 
-int
-__new_msgctl (int msqid, int cmd, struct msqid_ds *buf)
+static int
+msgctl_syscall (int msqid, int cmd, struct msqid_ds *buf)
 {
 #ifdef __ASSUME_DIRECT_SYSVIPC_SYSCALLS
   return INLINE_SYSCALL_CALL (msgctl, msqid, cmd | __IPC_64, buf);
@@ -36,8 +40,54 @@  __new_msgctl (int msqid, int cmd, struct msqid_ds *buf)
 			      buf);
 #endif
 }
+
+int
+__new_msgctl (int msqid, int cmd, struct msqid_ds *buf)
+{
+  /* POSIX states ipc_perm mode should have type of mode_t.  */
+  _Static_assert (sizeof ((struct msqid_ds){0}.msg_perm.mode)
+		  == sizeof (mode_t),
+		  "sizeof (msqid_ds.msg_perm.mode) != sizeof (mode_t)");
+
+#ifdef __ASSUME_SYSVIPC_BROKEN_MODE_T
+  struct msqid_ds tmpds;
+  if (cmd == IPC_SET)
+    {
+      tmpds = *buf;
+      tmpds.msg_perm.mode *= 0x10000U;
+      buf = &tmpds;
+    }
+#endif
+
+  int ret = msgctl_syscall (msqid, cmd, buf);
+
+#ifdef __ASSUME_SYSVIPC_BROKEN_MODE_T
+  if (ret >= 0)
+    {
+      switch (cmd)
+	{
+	case IPC_STAT:
+	case MSG_STAT:
+	case MSG_STAT_ANY:
+	  buf->msg_perm.mode >>= 16;
+	}
+    }
+#endif
+
+  return ret;
+}
 versioned_symbol (libc, __new_msgctl, msgctl, DEFAULT_VERSION);
 
+#if defined __ASSUME_SYSVIPC_BROKEN_MODE_T \
+    && SHLIB_COMPAT (libc, GLIBC_2_2, GLIBC_2_31)
+int
+attribute_compat_text_section
+__msgctl_mode16 (int msqid, int cmd, struct msqid_ds *buf)
+{
+  return msgctl_syscall (msqid, cmd, buf);
+}
+compat_symbol (libc, __msgctl_mode16, msgctl, GLIBC_2_2);
+#endif
 
 #if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2)
 struct __old_msqid_ds
diff --git a/sysdeps/unix/sysv/linux/powerpc/bits/ipc.h b/sysdeps/unix/sysv/linux/powerpc/bits/ipc-perm.h
similarity index 62%
rename from sysdeps/unix/sysv/linux/powerpc/bits/ipc.h
rename to sysdeps/unix/sysv/linux/powerpc/bits/ipc-perm.h
index f237c8ed10..022b337764 100644
--- a/sysdeps/unix/sysv/linux/powerpc/bits/ipc.h
+++ b/sysdeps/unix/sysv/linux/powerpc/bits/ipc-perm.h
@@ -1,4 +1,5 @@ 
-/* Copyright (C) 1995-2019 Free Software Foundation, Inc.
+/* struct ipc_perm definition.
+   Copyright (C) 1995-2019 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -16,28 +17,9 @@ 
    <http://www.gnu.org/licenses/>.  */
 
 #ifndef _SYS_IPC_H
-# error "Never use <bits/ipc.h> directly; include <sys/ipc.h> instead."
+# error "Never use <bits/ipc-perm.h> directly; include <sys/ipc.h> instead."
 #endif
 
-#include <bits/types.h>
-
-/* Mode bits for `msgget', `semget', and `shmget'.  */
-#define IPC_CREAT	01000		/* Create key if key does not exist. */
-#define IPC_EXCL	02000		/* Fail if key exists.  */
-#define IPC_NOWAIT	04000		/* Return error on wait.  */
-
-/* Control commands for `msgctl', `semctl', and `shmctl'.  */
-#define IPC_RMID	0		/* Remove identifier.  */
-#define IPC_SET		1		/* Set `ipc_perm' options.  */
-#define IPC_STAT	2		/* Get `ipc_perm' options.  */
-#ifdef __USE_GNU
-# define IPC_INFO	3		/* See ipcs.  */
-#endif
-
-/* Special key values.  */
-#define IPC_PRIVATE	((__key_t) 0)	/* Private key.  */
-
-
 /* Data structure used to pass permission information to IPC operations.  */
 struct ipc_perm
   {
diff --git a/sysdeps/unix/sysv/linux/s390/bits/ipc.h b/sysdeps/unix/sysv/linux/s390/bits/ipc.h
deleted file mode 100644
index 8cc7ed9abb..0000000000
--- a/sysdeps/unix/sysv/linux/s390/bits/ipc.h
+++ /dev/null
@@ -1,60 +0,0 @@ 
-/* Copyright (C) 2001-2019 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#ifndef _SYS_IPC_H
-# error "Never use <bits/ipc.h> directly; include <sys/ipc.h> instead."
-#endif
-
-#include <bits/types.h>
-#include <bits/wordsize.h>
-
-/* Mode bits for `msgget', `semget', and `shmget'.  */
-#define IPC_CREAT	01000		/* Create key if key does not exist. */
-#define IPC_EXCL	02000		/* Fail if key exists.	*/
-#define IPC_NOWAIT	04000		/* Return error on wait.  */
-
-/* Control commands for `msgctl', `semctl', and `shmctl'.  */
-#define IPC_RMID	0		/* Remove identifier.  */
-#define IPC_SET		1		/* Set `ipc_perm' options.  */
-#define IPC_STAT	2		/* Get `ipc_perm' options.  */
-#ifdef __USE_GNU
-#define IPC_INFO	3		/* See ipcs.  */
-#endif
-
-/* Special key values.	*/
-#define IPC_PRIVATE	((__key_t) 0)	/* Private key.	 */
-
-
-/* Data structure used to pass permission information to IPC operations.  */
-struct ipc_perm
-  {
-    __key_t __key;			/* Key.	 */
-    __uid_t uid;			/* Owner's user ID.  */
-    __gid_t gid;			/* Owner's group ID.  */
-    __uid_t cuid;			/* Creator's user ID.  */
-    __gid_t cgid;			/* Creator's group ID.	*/
-#if __WORDSIZE == 64
-    __mode_t mode;			/* Read/write permission.  */
-#else
-    unsigned short int mode;		/* Read/write permission.  */
-    unsigned short int __pad1;
-#endif
-    unsigned short int __seq;		/* Sequence number.  */
-    unsigned short int __pad2;
-    unsigned long int __glibc_reserved1;
-    unsigned long int __glibc_reserved2;
-  };
diff --git a/sysdeps/unix/sysv/linux/s390/kernel-features.h b/sysdeps/unix/sysv/linux/s390/kernel-features.h
index 8fdf38c454..c560eb78ab 100644
--- a/sysdeps/unix/sysv/linux/s390/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/s390/kernel-features.h
@@ -47,6 +47,9 @@ 
 
 /* s390 only supports ipc syscall.  */
 #undef __ASSUME_DIRECT_SYSVIPC_SYSCALLS
+#ifndef __s390x__
+# define __ASSUME_SYSVIPC_BROKEN_MODE_T
+#endif
 
 #undef __ASSUME_CLONE_DEFAULT
 #define __ASSUME_CLONE_BACKWARDS2
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
index 576295deff..3aa48fc87c 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
@@ -2173,6 +2173,9 @@  GLIBC_2.30 __nldbl_warn F
 GLIBC_2.30 __nldbl_warnx F
 GLIBC_2.30 getdents64 F
 GLIBC_2.30 gettid F
+GLIBC_2.30 msgctl F
+GLIBC_2.30 semctl F
+GLIBC_2.30 shmctl F
 GLIBC_2.30 tgkill F
 GLIBC_2.30 twalk_r F
 GLIBC_2.4 _IO_fprintf F
diff --git a/sysdeps/unix/sysv/linux/semctl.c b/sysdeps/unix/sysv/linux/semctl.c
index d428400681..1b2104e0d9 100644
--- a/sysdeps/unix/sysv/linux/semctl.c
+++ b/sysdeps/unix/sysv/linux/semctl.c
@@ -33,12 +33,33 @@  union semun
 };
 
 #ifndef DEFAULT_VERSION
-# define DEFAULT_VERSION GLIBC_2_2
+# ifndef __ASSUME_SYSVIPC_BROKEN_MODE_T
+#  define DEFAULT_VERSION GLIBC_2_2
+# else
+#  define DEFAULT_VERSION GLIBC_2_31
+# endif
 #endif
 
+static int
+semctl_syscall (int semid, int semnum, int cmd, union semun arg)
+{
+#ifdef __ASSUME_DIRECT_SYSVIPC_SYSCALLS
+  return INLINE_SYSCALL_CALL (semctl, semid, semnum, cmd | __IPC_64,
+			      arg.array);
+#else
+  return INLINE_SYSCALL_CALL (ipc, IPCOP_semctl, semid, semnum, cmd | __IPC_64,
+			      SEMCTL_ARG_ADDRESS (arg));
+#endif
+}
+
 int
 __new_semctl (int semid, int semnum, int cmd, ...)
 {
+  /* POSIX states ipc_perm mode should have type of mode_t.  */
+  _Static_assert (sizeof ((struct semid_ds){0}.sem_perm.mode)
+		  == sizeof (mode_t),
+		  "sizeof (msqid_ds.msg_perm.mode) != sizeof (mode_t)");
+
   union semun arg = { 0 };
   va_list ap;
 
@@ -59,16 +80,65 @@  __new_semctl (int semid, int semnum, int cmd, ...)
       break;
     }
 
-#ifdef __ASSUME_DIRECT_SYSVIPC_SYSCALLS
-  return INLINE_SYSCALL_CALL (semctl, semid, semnum, cmd | __IPC_64,
-			      arg.array);
-#else
-  return INLINE_SYSCALL_CALL (ipc, IPCOP_semctl, semid, semnum, cmd | __IPC_64,
-			      SEMCTL_ARG_ADDRESS (arg));
+#ifdef __ASSUME_SYSVIPC_BROKEN_MODE_T
+  struct semid_ds tmpds;
+  if (cmd == IPC_SET)
+    {
+      tmpds = *arg.buf;
+      tmpds.sem_perm.mode *= 0x10000U;
+      arg.buf = &tmpds;
+    }
+#endif
+
+  int ret = semctl_syscall (semid, semnum, cmd, arg);
+
+#ifdef __ASSUME_SYSVIPC_BROKEN_MODE_T
+  if (ret >= 0)
+    {
+      switch (cmd)
+	{
+        case IPC_STAT:
+        case SEM_STAT:
+        case SEM_STAT_ANY:
+          arg.buf->sem_perm.mode >>= 16;
+	}
+    }
 #endif
+
+  return ret;
 }
 versioned_symbol (libc, __new_semctl, semctl, DEFAULT_VERSION);
 
+#if defined __ASSUME_SYSVIPC_BROKEN_MODE_T \
+    && SHLIB_COMPAT (libc, GLIBC_2_2, GLIBC_2_31)
+int
+attribute_compat_text_section
+__semctl_mode16 (int semid, int semnum, int cmd, ...)
+{
+  union semun arg = { 0 };
+  va_list ap;
+
+  /* Get the argument only if required.  */
+  switch (cmd)
+    {
+    case SETVAL:        /* arg.val */
+    case GETALL:        /* arg.array */
+    case SETALL:
+    case IPC_STAT:      /* arg.buf */
+    case IPC_SET:
+    case SEM_STAT:
+    case IPC_INFO:      /* arg.__buf */
+    case SEM_INFO:
+      va_start (ap, cmd);
+      arg = va_arg (ap, union semun);
+      va_end (ap);
+      break;
+    }
+
+  return semctl_syscall (semid, semnum, cmd, arg);
+}
+compat_symbol (libc, __semctl_mode16, semctl, GLIBC_2_2);
+#endif
 
 #if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2)
 /* Since semctl use a variadic argument for semid_ds there is not need to
diff --git a/sysdeps/unix/sysv/linux/sh/be/Versions b/sysdeps/unix/sysv/linux/sh/be/Versions
new file mode 100644
index 0000000000..a50cd57630
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/sh/be/Versions
@@ -0,0 +1,5 @@ 
+libc {
+  GLIBC_2.31 {
+    msgctl; semctl; shmctl;
+  }
+}
diff --git a/sysdeps/unix/sysv/linux/sh/be/libc.abilist b/sysdeps/unix/sysv/linux/sh/be/libc.abilist
index 41977f6e9c..68f7474212 100644
--- a/sysdeps/unix/sysv/linux/sh/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sh/be/libc.abilist
@@ -2045,6 +2045,9 @@  GLIBC_2.30 getdents64 F
 GLIBC_2.30 gettid F
 GLIBC_2.30 tgkill F
 GLIBC_2.30 twalk_r F
+GLIBC_2.31 msgctl F
+GLIBC_2.31 semctl F
+GLIBC_2.31 shmctl F
 GLIBC_2.4 __confstr_chk F
 GLIBC_2.4 __fgets_chk F
 GLIBC_2.4 __fgets_unlocked_chk F
diff --git a/sysdeps/unix/sysv/linux/sh/kernel-features.h b/sysdeps/unix/sysv/linux/sh/kernel-features.h
index 0f287fbf85..f82bf49771 100644
--- a/sysdeps/unix/sysv/linux/sh/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/sh/kernel-features.h
@@ -20,6 +20,8 @@ 
 #ifndef __KERNEL_FEATURES_SH__
 # define __KERNEL_FEATURES_SH__
 
+#include <endian.h>
+
 /* These syscalls were added for SH in 2.6.37.  */
 #define __ASSUME_SOCKET_SYSCALL		1
 #define __ASSUME_BIND_SYSCALL		1
@@ -43,6 +45,9 @@ 
 
 /* sh only supports ipc syscall.  */
 #undef __ASSUME_DIRECT_SYSVIPC_SYSCALLS
+#if __BYTE_ORDER == __BIG_ENDIAN
+# define __ASSUME_SYSVIPC_BROKEN_MODE_T
+#endif
 
 /* Support for several syscalls was added in 4.8.  */
 #if __LINUX_KERNEL_VERSION < 0x040800
diff --git a/sysdeps/unix/sysv/linux/shmctl.c b/sysdeps/unix/sysv/linux/shmctl.c
index b322f205f8..e4baf71176 100644
--- a/sysdeps/unix/sysv/linux/shmctl.c
+++ b/sysdeps/unix/sysv/linux/shmctl.c
@@ -23,15 +23,16 @@ 
 #include <shlib-compat.h>
 #include <errno.h>
 
-
 #ifndef DEFAULT_VERSION
-# define DEFAULT_VERSION GLIBC_2_2
+# ifndef __ASSUME_SYSVIPC_BROKEN_MODE_T
+#  define DEFAULT_VERSION GLIBC_2_2
+# else
+#  define DEFAULT_VERSION GLIBC_2_31
+# endif
 #endif
 
-
-/* Provide operations to control over shared memory segments.  */
-int
-__new_shmctl (int shmid, int cmd, struct shmid_ds *buf)
+static int
+shmctl_syscall (int shmid, int cmd, struct shmid_ds *buf)
 {
 #ifdef __ASSUME_DIRECT_SYSVIPC_SYSCALLS
   return INLINE_SYSCALL_CALL (shmctl, shmid, cmd | __IPC_64, buf);
@@ -40,8 +41,55 @@  __new_shmctl (int shmid, int cmd, struct shmid_ds *buf)
 			      buf);
 #endif
 }
+
+/* Provide operations to control over shared memory segments.  */
+int
+__new_shmctl (int shmid, int cmd, struct shmid_ds *buf)
+{
+  /* POSIX states ipc_perm mode should have type of mode_t.  */
+  _Static_assert (sizeof ((struct shmid_ds){0}.shm_perm.mode)
+		  == sizeof (mode_t),
+		  "sizeof (msqid_ds.msg_perm.mode) != sizeof (mode_t)");
+
+#ifdef __ASSUME_SYSVIPC_BROKEN_MODE_T
+  struct shmid_ds tmpds;
+  if (cmd == IPC_SET)
+    {
+      tmpds = *buf;
+      tmpds.shm_perm.mode *= 0x10000U;
+      buf = &tmpds;
+    }
+#endif
+
+  int ret = shmctl_syscall (shmid, cmd, buf);
+
+#ifdef __ASSUME_SYSVIPC_BROKEN_MODE_T
+  if (ret >= 0)
+    {
+      switch (cmd)
+	{
+        case IPC_STAT:
+        case SHM_STAT:
+        case SHM_STAT_ANY:
+          buf->shm_perm.mode >>= 16;
+	}
+    }
+#endif
+
+  return ret;
+}
 versioned_symbol (libc, __new_shmctl, shmctl, DEFAULT_VERSION);
 
+#if defined __ASSUME_SYSVIPC_BROKEN_MODE_T \
+    && SHLIB_COMPAT (libc, GLIBC_2_2, GLIBC_2_31)
+int
+attribute_compat_text_section
+__shmctl_mode16 (int shmid, int cmd, struct shmid_ds *buf)
+{
+  return shmctl_syscall (shmid, cmd, buf);
+}
+compat_symbol (libc, __shmctl_mode16, shmctl, GLIBC_2_2);
+#endif
 
 #if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2)
 struct __old_shmid_ds
diff --git a/sysdeps/unix/sysv/linux/sparc/bits/ipc.h b/sysdeps/unix/sysv/linux/sparc/bits/ipc-perm.h
similarity index 59%
rename from sysdeps/unix/sysv/linux/sparc/bits/ipc.h
rename to sysdeps/unix/sysv/linux/sparc/bits/ipc-perm.h
index b67c25ec61..95ac584752 100644
--- a/sysdeps/unix/sysv/linux/sparc/bits/ipc.h
+++ b/sysdeps/unix/sysv/linux/sparc/bits/ipc-perm.h
@@ -1,4 +1,5 @@ 
-/* Copyright (C) 1995-2019 Free Software Foundation, Inc.
+/* struct ipc_perm definition.
+   Copyright (C) 1995-2019 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -16,29 +17,9 @@ 
    <http://www.gnu.org/licenses/>.  */
 
 #ifndef _SYS_IPC_H
-# error "Never use <bits/ipc.h> directly; include <sys/ipc.h> instead."
+# error "Never use <bits/ipc-perm.h> directly; include <sys/ipc.h> instead."
 #endif
 
-#include <bits/types.h>
-#include <bits/wordsize.h>
-
-/* Mode bits for `msgget', `semget', and `shmget'.  */
-#define IPC_CREAT	01000		/* Create key if key does not exist. */
-#define IPC_EXCL	02000		/* Fail if key exists.  */
-#define IPC_NOWAIT	04000		/* Return error on wait.  */
-
-/* Control commands for `msgctl', `semctl', and `shmctl'.  */
-#define IPC_RMID	0		/* Remove identifier.  */
-#define IPC_SET		1		/* Set `ipc_perm' options.  */
-#define IPC_STAT	2		/* Get `ipc_perm' options.  */
-#ifdef __USE_GNU
-# define IPC_INFO	3		/* See ipcs.  */
-#endif
-
-/* Special key values.  */
-#define IPC_PRIVATE	((__key_t) 0)	/* Private key.  */
-
-
 /* Data structure used to pass permission information to IPC operations.  */
 struct ipc_perm
   {
@@ -47,14 +28,8 @@  struct ipc_perm
     __gid_t gid;			/* Owner's group ID.  */
     __uid_t cuid;			/* Creator's user ID.  */
     __gid_t cgid;			/* Creator's group ID.  */
-#if __WORDSIZE == 32
-    unsigned short int __pad1;
-    unsigned short int mode;		/* Read/write permission.  */
-    unsigned short int __pad2;
-#else
     __mode_t mode;			/* Read/write permission.  */
     unsigned short int __pad1;
-#endif
     unsigned short int __seq;		/* Sequence number.  */
     __extension__ unsigned long long int __glibc_reserved1;
     __extension__ unsigned long long int __glibc_reserved2;