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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>
57 lines
1.9 KiB
C
57 lines
1.9 KiB
C
/* Old SysV permission definition for Linux. Default version.
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Copyright (C) 1995-2019 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <sys/ipc.h> /* For __key_t */
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#include <kernel-features.h>
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#ifdef __ASSUME_SYSVIPC_DEFAULT_IPC_64
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# define __IPC_64 0x0
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#else
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# define __IPC_64 0x100
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#endif
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#ifndef __OLD_IPC_ID_TYPE
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# define __OLD_IPC_ID_TYPE unsigned short int
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#endif
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#ifndef __OLD_IPC_MODE_TYPE
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# define __OLD_IPC_MODE_TYPE unsigned short int
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#endif
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struct __old_ipc_perm
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{
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__key_t __key; /* Key. */
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__OLD_IPC_ID_TYPE uid; /* Owner's user ID. */
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__OLD_IPC_ID_TYPE gid; /* Owner's group ID. */
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__OLD_IPC_ID_TYPE cuid; /* Creator's user ID. */
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__OLD_IPC_ID_TYPE cgid; /* Creator's group ID. */
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__OLD_IPC_MODE_TYPE mode; /* Read/write permission. */
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unsigned short int __seq; /* Sequence number. */
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};
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#define SEMCTL_ARG_ADDRESS(__arg) &__arg.array
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#define MSGRCV_ARGS(__msgp, __msgtyp) \
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((long int []){ (long int) __msgp, __msgtyp })
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/* This macro is required to handle the s390 variants, which passes the
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arguments in a different order than default. */
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#define SEMTIMEDOP_IPC_ARGS(__nsops, __sops, __timeout) \
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(__nsops), 0, (__sops), (__timeout)
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#include <ipc_ops.h>
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