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sysvipc: Set ipc_perm mode as mode_t (BZ#18231)

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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/m68k/Versions (libc) [GLIBC_2.31]: Add
	msgctl, semctl, and shmctl.
	* 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
This commit is contained in:
Adhemerval Zanella 2019-10-10 18:13:11 +00:00
parent 8a3ca0fdd3
commit 2f959dfe84
34 changed files with 391 additions and 424 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

51
ChangeLog
View File

@ -1,3 +1,54 @@
2019-10-10 Adhemerval Zanella <adhemerval.zanella@linaro.org>
[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/m68k/Versions (libc) [GLIBC_2.31]: Add
msgctl, semctl, and shmctl.
* 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.
2019-10-10 Andreas Schwab <schwab@suse.de>
* elf/dl-load.c (open_verify): Remove dead code.

3
conform/data/sys/ipc.h-data
View File

@ -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

3
sysdeps/unix/sysv/linux/Makefile
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@ -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 \

54
sysdeps/unix/sysv/linux/aarch64/bits/ipc.h
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@ -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
<https://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;
};

54
sysdeps/unix/sysv/linux/alpha/bits/ipc.h
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@ -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
<https://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;
};

5
sysdeps/unix/sysv/linux/arm/be/Versions Normal file
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@ -0,0 +1,5 @@
libc {
GLIBC_2.31 {
msgctl; semctl; shmctl;
}
}

3
sysdeps/unix/sysv/linux/arm/be/libc.abilist
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@ -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

5
sysdeps/unix/sysv/linux/arm/kernel-features.h
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@ -17,6 +17,7 @@
License along with the GNU C Library. If not, see
<https://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

40
sysdeps/unix/sysv/linux/bits/ipc-perm.h Normal file
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@ -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;
};

17
sysdeps/unix/sysv/linux/bits/ipc.h
View File

@ -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>

37
sysdeps/unix/sysv/linux/hppa/bits/ipc-perm.h Normal file
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@ -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;
};

62
sysdeps/unix/sysv/linux/hppa/bits/ipc.h
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@ -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
<https://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;
};

53
sysdeps/unix/sysv/linux/ia64/bits/ipc.h
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@ -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
<https://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;
};

8
sysdeps/unix/sysv/linux/kernel-features.h
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@ -86,6 +86,14 @@
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

3
sysdeps/unix/sysv/linux/m68k/Versions
View File

@ -37,6 +37,9 @@ libc {
GLIBC_2.11 {
fallocate64;
}
GLIBC_2.31 {
msgctl; semctl; shmctl;
}
GLIBC_2.12 {
__m68k_read_tp;
}

3
sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
View File

@ -131,6 +131,9 @@ 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 0x98
GLIBC_2.4 _IO_2_1_stdin_ D 0x98

1
sysdeps/unix/sysv/linux/m68k/kernel-features.h
View File

@ -52,3 +52,4 @@
/* m68k only supports ipc syscall. */
#undef __ASSUME_DIRECT_SYSVIPC_SYSCALLS
#define __ASSUME_SYSVIPC_BROKEN_MODE_T

3
sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
View File

@ -2155,6 +2155,9 @@ 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

5
sysdeps/unix/sysv/linux/microblaze/be/Versions Normal file
View File

@ -0,0 +1,5 @@
libc {
GLIBC_2.31 {
msgctl; semctl; shmctl;
}
}

3
sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
View File

@ -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

5
sysdeps/unix/sysv/linux/microblaze/kernel-features.h
View File

@ -15,6 +15,7 @@
License along with the GNU C Library. If not, see
<https://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

54
sysdeps/unix/sysv/linux/mips/bits/ipc.h
View File

@ -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
<https://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;
};

56
sysdeps/unix/sysv/linux/msgctl.c
View File

@ -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

24
sysdeps/unix/sysv/linux/powerpc/bits/ipc.h → sysdeps/unix/sysv/linux/powerpc/bits/ipc-perm.h
View File

@ -1,4 +1,5 @@
/* Copyright (C) 1995-2019 Free Software Foundation, Inc.
/* struct ipc_perm definition. Linux/powerpc version.
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 @@
<https://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
{

60
sysdeps/unix/sysv/linux/s390/bits/ipc.h
View File

@ -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
<https://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;
};

3
sysdeps/unix/sysv/linux/s390/kernel-features.h
View File

@ -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

3
sysdeps/unix/sysv/linux/s390/s390-32/Versions
View File

@ -49,6 +49,9 @@ libc {
GLIBC_2.11 {
fallocate64;
}
GLIBC_2.31 {
msgctl; semctl; shmctl;
}
}
libutil {

3
sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
View File

@ -2180,6 +2180,9 @@ 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 _IO_fprintf F
GLIBC_2.4 _IO_printf F
GLIBC_2.4 _IO_sprintf F

90
sysdeps/unix/sysv/linux/semctl.c
View File

@ -33,11 +33,87 @@ 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;
/* 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;
}
#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;
@ -59,16 +135,10 @@ __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));
#endif
return semctl_syscall (semid, semnum, cmd, arg);
}
versioned_symbol (libc, __new_semctl, semctl, DEFAULT_VERSION);
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

5
sysdeps/unix/sysv/linux/sh/be/Versions Normal file
View File

@ -0,0 +1,5 @@
libc {
GLIBC_2.31 {
msgctl; semctl; shmctl;
}
}

3
sysdeps/unix/sysv/linux/sh/be/libc.abilist
View File

@ -2050,6 +2050,9 @@ 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

5
sysdeps/unix/sysv/linux/sh/kernel-features.h
View File

@ -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

60
sysdeps/unix/sysv/linux/shmctl.c
View File

@ -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

31
sysdeps/unix/sysv/linux/sparc/bits/ipc.h → sysdeps/unix/sysv/linux/sparc/bits/ipc-perm.h
View File

@ -1,4 +1,5 @@
/* Copyright (C) 1995-2019 Free Software Foundation, Inc.
/* struct ipc_perm definition. Linux/sparc version.
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 @@
<https://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;