From patchwork Tue Nov 1 14:25:20 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Adhemerval Zanella Netto X-Patchwork-Id: 17083 Received: (qmail 38934 invoked by alias); 1 Nov 2016 14:25:59 -0000 Mailing-List: contact libc-alpha-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: libc-alpha-owner@sourceware.org Delivered-To: mailing list libc-alpha@sourceware.org Received: (qmail 37959 invoked by uid 89); 1 Nov 2016 14:25:55 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-1.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_NONE, SPF_PASS autolearn=ham version=3.3.2 spammy=Hx-languages-length:6246 X-HELO: mail-vk0-f53.google.com X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references; bh=lA4sMJLnsFjBoyKM/y4R4w02NsiaRt4TYjDCT9AtuIU=; b=S8R7Ta0Xl9YUeX80pPIYyibFjDmA/DXc0Gxtt/vYamGFucFo/l6KvgvS8j/SWD8Smt 1h3vEOGkzPx4kB2iOhBRD8CuVx42Ddc+8Otm3AZDmtxEC1kvTCYfFsPygDrMVNBRAKzL muZCR++Hh8BSl1lBceeD8IZHV6GLzgrRvJWCQWqv5umxBpboRrUHHXzT6p5WnUBcacFd ixQx7LgQJ6MtC+CGwj4OkuzIxJDevoFQDTmw89veUfeKxKhuvrNNRZCEUAXx4AYb2Ign bNIgVdJh0zqaNpijAKNJoBZZJlHHbfEp9S7sziNPR5/bg7wQmLRMJRGC79DVm2M+xC2E +z7g== X-Gm-Message-State: ABUngve7GNVjPcMeVxY7z+vy39RZ4I/2+V7NCb35YdXHZQWqSPY0K1iHf4jc1+uAe67IkX9V X-Received: by 10.31.189.14 with SMTP id n14mr8922597vkf.81.1478010344803; Tue, 01 Nov 2016 07:25:44 -0700 (PDT) From: Adhemerval Zanella To: libc-alpha@sourceware.org Subject: [PATCH 12/15] Consolidate Linux shmctl implementation Date: Tue, 1 Nov 2016 12:25:20 -0200 Message-Id: <1478010323-13076-13-git-send-email-adhemerval.zanella@linaro.org> In-Reply-To: <1478010323-13076-1-git-send-email-adhemerval.zanella@linaro.org> References: <1478010323-13076-1-git-send-email-adhemerval.zanella@linaro.org> 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 defined, 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/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. --- ChangeLog | 8 ++++ sysdeps/unix/sysv/linux/alpha/shmctl.c | 1 - sysdeps/unix/sysv/linux/arm/shmctl.c | 34 ----------------- sysdeps/unix/sysv/linux/microblaze/shmctl.c | 1 - sysdeps/unix/sysv/linux/mips/mips64/shmctl.c | 17 +-------- sysdeps/unix/sysv/linux/shmctl.c | 56 ++++++++++++---------------- 6 files changed, 34 insertions(+), 83 deletions(-) delete mode 100644 sysdeps/unix/sysv/linux/alpha/shmctl.c delete mode 100644 sysdeps/unix/sysv/linux/arm/shmctl.c delete mode 100644 sysdeps/unix/sysv/linux/microblaze/shmctl.c diff --git a/sysdeps/unix/sysv/linux/alpha/shmctl.c b/sysdeps/unix/sysv/linux/alpha/shmctl.c deleted file mode 100644 index f73ed6f..0000000 --- a/sysdeps/unix/sysv/linux/alpha/shmctl.c +++ /dev/null @@ -1 +0,0 @@ -#include diff --git a/sysdeps/unix/sysv/linux/arm/shmctl.c b/sysdeps/unix/sysv/linux/arm/shmctl.c deleted file mode 100644 index 23c4b8d..0000000 --- a/sysdeps/unix/sysv/linux/arm/shmctl.c +++ /dev/null @@ -1,34 +0,0 @@ -/* Copyright (C) 1995-2016 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Ulrich Drepper , August 1995. - - 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 - . */ - -#include -#include -#include -#include -#include -#include - - -int -__new_shmctl (int shmid, int cmd, struct shmid_ds *buf) -{ - return INLINE_SYSCALL (shmctl, 3, shmid, cmd | __IPC_64, buf); -} - -#include -versioned_symbol (libc, __new_shmctl, shmctl, GLIBC_2_2); diff --git a/sysdeps/unix/sysv/linux/microblaze/shmctl.c b/sysdeps/unix/sysv/linux/microblaze/shmctl.c deleted file mode 100644 index f73ed6f..0000000 --- a/sysdeps/unix/sysv/linux/microblaze/shmctl.c +++ /dev/null @@ -1 +0,0 @@ -#include diff --git a/sysdeps/unix/sysv/linux/mips/mips64/shmctl.c b/sysdeps/unix/sysv/linux/mips/mips64/shmctl.c index ea0fa94..8a82697 100644 --- a/sysdeps/unix/sysv/linux/mips/mips64/shmctl.c +++ b/sysdeps/unix/sysv/linux/mips/mips64/shmctl.c @@ -15,18 +15,5 @@ License along with the GNU C Library. If not, see . */ -#include -#include -#include -#include - -int __shmctl (int shmid, int cmd, struct shmid_ds *buf); - -int -__shmctl (int shmid, int cmd, struct shmid_ds *buf) -{ - return INLINE_SYSCALL (shmctl, 3, shmid, cmd | __IPC_64, buf); -} - -#include -versioned_symbol (libc, __shmctl, shmctl, GLIBC_2_0); +#define DEFAULT_VERSION GLIBC_2_0 +#include <./sysdeps/unix/sysv/linux/shmctl.c> diff --git a/sysdeps/unix/sysv/linux/shmctl.c b/sysdeps/unix/sysv/linux/shmctl.c index b2caf75..43e4075 100644 --- a/sysdeps/unix/sysv/linux/shmctl.c +++ b/sysdeps/unix/sysv/linux/shmctl.c @@ -16,18 +16,35 @@ License along with the GNU C Library; if not, see . */ -#include #include +#include #include - #include -#include -#include -#include #include +#include + + +#ifndef DEFAULT_VERSION +# define DEFAULT_VERSION GLIBC_2_2 +#endif + + +/* Provide operations to control over shared memory segments. */ +int +__new_shmctl (int shmid, int cmd, struct shmid_ds *buf) +{ +#ifdef __NR_shmctl + return INLINE_SYSCALL_CALL (shmctl, shmid, cmd, buf); +#else + return INLINE_SYSCALL_CALL (ipc, IPCOP_shmctl, shmid, cmd | __IPC_64, 0, + buf); +#endif +} +versioned_symbol (libc, __new_shmctl, shmctl, DEFAULT_VERSION); -#include +#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2) \ + && defined (__NR_ipc) struct __old_shmid_ds { struct __old_ipc_perm shm_perm; /* operation permission struct */ @@ -43,36 +60,11 @@ struct __old_shmid_ds struct vm_area_struct *__attaches; /* descriptors for attaches */ }; -struct __old_shminfo -{ - int shmmax; - int shmmin; - int shmmni; - int shmseg; - int shmall; -}; - -/* Provide operations to control over shared memory segments. */ -#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2) -int __old_shmctl (int, int, struct __old_shmid_ds *); -#endif -int __new_shmctl (int, int, struct shmid_ds *); - -#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2) int attribute_compat_text_section __old_shmctl (int shmid, int cmd, struct __old_shmid_ds *buf) { - return INLINE_SYSCALL (ipc, 5, IPCOP_shmctl, shmid, cmd, 0, buf); + return INLINE_SYSCALL_CALL (ipc, IPCOP_shmctl, shmid, cmd, 0, buf); } compat_symbol (libc, __old_shmctl, shmctl, GLIBC_2_0); #endif - -int -__new_shmctl (int shmid, int cmd, struct shmid_ds *buf) -{ - return INLINE_SYSCALL (ipc, 5, IPCOP_shmctl, shmid, cmd | __IPC_64, 0, - buf); -} - -versioned_symbol (libc, __new_shmctl, shmctl, GLIBC_2_2);