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Consolidate Linux shmctl implementation
This patch consolidates the shmctl Linux implementation in only one default file, sysdeps/unix/sysv/linux/shmctl.c. If tries to use the direct syscall if it is supported, otherwise will use the old ipc multiplex mechanism. The patch also simplify header inclusion and reorganize internal compat symbol to be built only if old ipc is defined. Checked on x86_64, i686, powerpc64le, aarch64, and armhf. * sysdeps/unix/sysv/linux/alpha/Makefile (sysdeps_routines): Remove oldshmctl. * sysdeps/unix/sysv/linux/alpha/syscalls.list (shmctl): Remove. * sysdeps/unix/sysv/linux/arm/syscalls.list (shmctl): Likewise. * sysdeps/unix/sysv/linux/generic/syscalls.list (shmctl): Likewise. * sysdeps/unix/sysv/linux/hppa/syscalls.list (shmctl): Likewise. * sysdeps/unix/sysv/linux/ia64/syscalls.list (shmctl): Likewise. * sysdeps/unix/sysv/linux/microblaze/syscalls.list (shmctl): Likewise. * sysdeps/unix/sysv/linux/mips/mips64/syscalls.list (shmctl): Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/syscalls.list (shmctl): Likewise. * sysdeps/unix/sysv/linux/x86_64/syscalls.list (shmctl): Likewise. * sysdeps/unix/sysv/linux/alpha/shmctl.c: Remove file. * sysdeps/unix/sysv/linux/arm/shmctl.c: Likewise. * sysdeps/unix/sysv/linux/microblaze/shmctl.c: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/shmctl.c: Use default implementation. * sysdeps/unix/sysv/linux/shmctl.c (__new_shmctl): Use shmctl syscall if it is defined.
This commit is contained in:
Adhemerval Zanella
parent
8232e7d209
commit
e01f79e412
21
ChangeLog
21
ChangeLog
@ -1,5 +1,26 @@
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2016-12-28 Adhemerval Zanella <adhemerval.zanella@linaro.org>
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* sysdeps/unix/sysv/linux/alpha/Makefile (sysdeps_routines): Remove
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oldshmctl.
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* sysdeps/unix/sysv/linux/alpha/syscalls.list (shmctl): Remove.
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* sysdeps/unix/sysv/linux/arm/syscalls.list (shmctl): Likewise.
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* sysdeps/unix/sysv/linux/generic/syscalls.list (shmctl): Likewise.
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* sysdeps/unix/sysv/linux/hppa/syscalls.list (shmctl): Likewise.
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* sysdeps/unix/sysv/linux/ia64/syscalls.list (shmctl): Likewise.
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* sysdeps/unix/sysv/linux/microblaze/syscalls.list (shmctl): Likewise.
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* sysdeps/unix/sysv/linux/mips/mips64/syscalls.list (shmctl):
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Likewise.
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* sysdeps/unix/sysv/linux/s390/s390-64/syscalls.list (shmctl):
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Likewise.
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* sysdeps/unix/sysv/linux/x86_64/syscalls.list (shmctl): Likewise.
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* sysdeps/unix/sysv/linux/alpha/shmctl.c: Remove file.
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* sysdeps/unix/sysv/linux/arm/shmctl.c: Likewise.
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* sysdeps/unix/sysv/linux/microblaze/shmctl.c: Likewise.
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* sysdeps/unix/sysv/linux/mips/mips64/shmctl.c: Use default
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implementation.
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* sysdeps/unix/sysv/linux/shmctl.c (__new_shmctl): Use shmctl syscall
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if it is defined.
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* sysdeps/unix/sysv/linux/alpha/syscalls.list (shmat): Remove.
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* sysdeps/unix/sysv/linux/arm/syscalls.list (shmat): Likewise.
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* sysdeps/unix/sysv/linux/generic/syscalls.list (shmat): Likewise.
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@ -17,9 +17,6 @@ sysdep_routines += osf_select osf_gettimeofday osf_settimeofday \
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osf_getitimer osf_setitimer osf_utimes \
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osf_getrusage osf_wait4
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# Support old ipc control
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sysdep_routines += oldshmctl
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CFLAGS-ioperm.c = -Wa,-mev6
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endif
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@ -1 +0,0 @@
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#include <sysdeps/unix/sysv/linux/arm/shmctl.c>
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@ -1,6 +1,5 @@
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# File name Caller Syscall name # args Strong name Weak names
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oldshmctl EXTRA shmctl i:iip __old_shmctl shmctl@GLIBC_2.0
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shmdt - shmdt i:s __shmdt shmdt
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shmget - shmget i:iii __shmget shmget
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@ -1,34 +0,0 @@
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/* Copyright (C) 1995-2016 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995.
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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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<http://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <sys/shm.h>
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#include <ipc_priv.h>
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#include <sysdep.h>
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#include <sys/syscall.h>
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#include <bits/wordsize.h>
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int
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__new_shmctl (int shmid, int cmd, struct shmid_ds *buf)
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{
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return INLINE_SYSCALL (shmctl, 3, shmid, cmd | __IPC_64, buf);
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}
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#include <shlib-compat.h>
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versioned_symbol (libc, __new_shmctl, shmctl, GLIBC_2_2);
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@ -2,7 +2,6 @@
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# SysV APIs
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shmget - shmget i:iii __shmget shmget
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shmctl - shmctl i:iip __shmctl shmctl
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shmdt - shmdt i:s __shmdt shmdt
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# Socket APIs
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@ -1,7 +1,6 @@
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# File name Caller Syscall name # args Strong name Weak names
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# semaphore and shm system calls
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shmctl - shmctl i:iip __shmctl shmctl
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shmdt - shmdt i:s __shmdt shmdt
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shmget - shmget i:iii __shmget shmget
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@ -5,7 +5,6 @@ umount2 - umount 2 __umount2 umount2
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getpriority - getpriority i:ii __getpriority getpriority
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# semaphore and shm system calls
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shmctl - shmctl i:iip __shmctl shmctl
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shmdt - shmdt i:s __shmdt shmdt
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shmget - shmget i:iii __shmget shmget
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@ -1 +0,0 @@
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#include <sysdeps/unix/sysv/linux/arm/shmctl.c>
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@ -15,18 +15,11 @@
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License along with the GNU C Library. If not, see
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<http://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <sys/shm.h>
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#include <ipc_priv.h>
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#include <sysdep.h>
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int __shmctl (int shmid, int cmd, struct shmid_ds *buf);
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int
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__shmctl (int shmid, int cmd, struct shmid_ds *buf)
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{
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return INLINE_SYSCALL (shmctl, 3, shmid, cmd | __IPC_64, buf);
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}
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#include <shlib-compat.h>
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versioned_symbol (libc, __shmctl, shmctl, GLIBC_2_0);
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#undef SHLIB_COMPAT
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#define SHLIB_COMPAT(a, b, c) 0
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#define DEFAULT_VERSION GLIBC_2_0
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#include <./sysdeps/unix/sysv/linux/shmctl.c>
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@ -1,6 +1,5 @@
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# File name Caller Syscall name # args Strong name Weak names
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# semaphore and shm system calls
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shmctl - shmctl i:iip __shmctl shmctl
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shmdt - shmdt i:s __shmdt shmdt
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shmget - shmget i:iii __shmget shmget
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@ -16,18 +16,34 @@
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <sys/shm.h>
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#include <stdarg.h>
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#include <ipc_priv.h>
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#include <sysdep.h>
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#include <string.h>
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#include <sys/syscall.h>
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#include <bits/wordsize.h>
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#include <shlib-compat.h>
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#include <errno.h>
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#include <kernel-features.h>
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#ifndef DEFAULT_VERSION
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# define DEFAULT_VERSION GLIBC_2_2
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#endif
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/* Provide operations to control over shared memory segments. */
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int
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__new_shmctl (int shmid, int cmd, struct shmid_ds *buf)
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{
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#ifdef __ASSUME_DIRECT_SYSVIPC_SYSCALLS
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return INLINE_SYSCALL_CALL (shmctl, shmid, cmd | __IPC_64, buf);
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#else
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return INLINE_SYSCALL_CALL (ipc, IPCOP_shmctl, shmid, cmd | __IPC_64, 0,
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buf);
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#endif
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}
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versioned_symbol (libc, __new_shmctl, shmctl, DEFAULT_VERSION);
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#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2)
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struct __old_shmid_ds
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{
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struct __old_ipc_perm shm_perm; /* operation permission struct */
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@ -43,36 +59,15 @@ struct __old_shmid_ds
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struct vm_area_struct *__attaches; /* descriptors for attaches */
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};
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struct __old_shminfo
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{
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int shmmax;
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int shmmin;
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int shmmni;
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int shmseg;
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int shmall;
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};
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/* Provide operations to control over shared memory segments. */
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#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2)
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int __old_shmctl (int, int, struct __old_shmid_ds *);
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#endif
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int __new_shmctl (int, int, struct shmid_ds *);
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#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2)
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int
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attribute_compat_text_section
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__old_shmctl (int shmid, int cmd, struct __old_shmid_ds *buf)
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{
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return INLINE_SYSCALL (ipc, 5, IPCOP_shmctl, shmid, cmd, 0, buf);
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#ifdef __ASSUME_DIRECT_SYSVIPC_SYSCALLS
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return INLINE_SYSCALL_CALL (shmctl, shmid, cmd, buf);
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#else
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return INLINE_SYSCALL_CALL (ipc, IPCOP_shmctl, shmid, cmd, 0, buf);
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#endif
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}
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compat_symbol (libc, __old_shmctl, shmctl, GLIBC_2_0);
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#endif
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int
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__new_shmctl (int shmid, int cmd, struct shmid_ds *buf)
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{
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return INLINE_SYSCALL (ipc, 5, IPCOP_shmctl, shmid, cmd | __IPC_64, 0,
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buf);
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}
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versioned_symbol (libc, __new_shmctl, shmctl, GLIBC_2_2);
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@ -6,7 +6,6 @@ pread64 - pread64 Ci:ipii __libc_pread __libc_pread64 __pread64 pread64 __prea
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preadv64 - preadv Ci:ipii preadv64 preadv
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pwrite64 - pwrite64 Ci:ipii __libc_pwrite __libc_pwrite64 __pwrite64 pwrite64 __pwrite pwrite
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pwritev64 - pwritev Ci:ipii pwritev64 pwritev
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shmctl - shmctl i:iip __shmctl shmctl
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shmdt - shmdt i:s __shmdt shmdt
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shmget - shmget i:iii __shmget shmget
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syscall_clock_gettime EXTRA clock_gettime Ei:ip __syscall_clock_gettime
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