mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-04 02:40:06 +00:00
06436acf81
This patch refactor the internal sysvipc in two main points:
1. Add a new __ASSUME_SYSVIPC_DEFAULT_IPC_64 to infer the __IPC_64
value to be used along either the multiplexed __NR_ipc or wired-up
syscall. The defaut value assumed for __IPC_64 is also changed
from 0x100 to 0x0, aligning with Linux generic UAPI. The idea
is to simplify the Linux 5.1 wire-up for sysvipc syscalls for
some 32-bit ABIs (which expectes __IPC_64 being 0x0) and simplify
new ports (which will no longer need to add ipc_priv.h).
2. It also removes some duplicated internal definition used on compat
sysvipc symbols defined at ipc_priv.h (more specifically the
__old_ipc_perm, SEMCTL_ARG_ADDRESS, MSGRCV_ARGS, and
SEMTIMEDOP_IPC_ARGS). The idea is also to make it simpler to enable
the new wire-up sysvipc syscall provided by Linux v5.1.
There is no semantic change expected on any port. Checked with a build
against all affected ABIs.
Reviewed-by: Florian Weimer <fweimer@redhat.com>
55 lines
1.9 KiB
C
55 lines
1.9 KiB
C
/* Set flags signalling availability of kernel features based on given
|
|
kernel version number.
|
|
Copyright (C) 1999-2019 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/>. */
|
|
|
|
#include <sgidefs.h>
|
|
|
|
#include_next <kernel-features.h>
|
|
|
|
/* The MIPS kernel does not support futex_atomic_cmpxchg_inatomic if
|
|
emulating LL/SC. */
|
|
#if __mips == 1 || defined _MIPS_ARCH_R5900
|
|
# undef __ASSUME_SET_ROBUST_LIST
|
|
#endif
|
|
|
|
/* Define this if your 32-bit syscall API requires 64-bit register
|
|
pairs to start with an even-number register. */
|
|
#if _MIPS_SIM == _ABIO32
|
|
# define __ASSUME_ALIGNED_REGISTER_PAIRS 1
|
|
/* mips32 only supports ipc syscall. */
|
|
# undef __ASSUME_DIRECT_SYSVIPC_SYSCALLS
|
|
|
|
/* The o32 MIPS fadvise64 syscall behaves as fadvise64_64. */
|
|
# define __ASSUME_FADVISE64_AS_64_64 1
|
|
|
|
/* mips32 support wire-up network syscalls. */
|
|
# define __ASSUME_RECV_SYSCALL 1
|
|
# define __ASSUME_SEND_SYSCALL 1
|
|
#endif
|
|
|
|
/* Define that mips64-n32 is a ILP32 ABI to set the correct interface to
|
|
pass 64-bits values through syscalls. */
|
|
#if _MIPS_SIM == _ABIN32
|
|
# define __ASSUME_WORDSIZE64_ILP32 1
|
|
#endif
|
|
|
|
#undef __ASSUME_CLONE_DEFAULT
|
|
#define __ASSUME_CLONE_BACKWARDS 1
|
|
|
|
#undef __ASSUME_SYSVIPC_DEFAULT_IPC_64
|