From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pg1-x544.google.com (mail-pg1-x544.google.com [IPv6:2607:f8b0:4864:20::544]) by sourceware.org (Postfix) with ESMTPS id 08A4B389364F for ; Wed, 29 Apr 2020 14:47:31 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 08A4B389364F Received: by mail-pg1-x544.google.com with SMTP id s18so1101988pgl.12 for ; Wed, 29 Apr 2020 07:47:30 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=Z+R00jWJdj2gBGNhtijyeDFcL/KwjUq083rUGwlqreA=; b=Iux+D9lKsSYqVfN3GrRIJMWtwh0GFCPJtT7DaJm/VPjEKnu4pL+o8E8aAxq4skDqmF j2L2v9kmbgL+9T0Snt5+9MExW+YJTlJCgn02d29pYV+H4ue7h0gMX25cS4/d7756azw7 XG982ZSz599ybkN4ljhYJtgAtlO7wBLoxQqLQtTmkEqc2jC8unE7t3lYycXgxF+Wc3NQ Q4l5JDMQbI123RSTF2jBzB7UozaxtaCm4FIjKr55P7D2D+rIeHQ71q+oYVZ7QMnHZotI Y74ACI1jF6X6N9DAlVNb5tkZbXAI8hJSGpUFH7zjZD6AFrck8mEg+qwb7j7yWmSAo7gP S4nA== X-Gm-Message-State: AGi0Pua122A6NgM0RUfTqXz56Dgg0L3NqA+OkAnaOKNqzzbtthduGI7Y CvXYlclloiMzaL1G3qu9Nxw= X-Google-Smtp-Source: APiQypJeG1MDL+8HJACuobnjqriZfQEcqY2DSg2vVZW8d5W4jt+RBjvcjENJ6kMw4tgYiP/uXHAnNA== X-Received: by 2002:a63:48a:: with SMTP id 132mr23974859pge.380.1588171650041; Wed, 29 Apr 2020 07:47:30 -0700 (PDT) Received: from gnu-cfl-2.localdomain (c-69-181-90-243.hsd1.ca.comcast.net. [69.181.90.243]) by smtp.gmail.com with ESMTPSA id d8sm1200832pgt.69.2020.04.29.07.47.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Apr 2020 07:47:29 -0700 (PDT) Received: from gnu-cfl-2.localdomain (localhost [IPv6:::1]) by gnu-cfl-2.localdomain (Postfix) with ESMTP id F0F29C0480; Wed, 29 Apr 2020 07:47:27 -0700 (PDT) From: "H.J. Lu" To: libc-alpha@sourceware.org Subject: [PATCH 2/2] Add C wrappers for prctl/process_vm_readv/process_vm_writev [BZ #25810] Date: Wed, 29 Apr 2020 07:47:27 -0700 Message-Id: <20200429144727.3769136-2-hjl.tools@gmail.com> X-Mailer: git-send-email 2.25.4 In-Reply-To: <20200429144727.3769136-1-hjl.tools@gmail.com> References: <20200429144727.3769136-1-hjl.tools@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-24.9 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FREEMAIL_FROM, GIT_PATCH_0, GIT_PATCH_1, GIT_PATCH_2, GIT_PATCH_3, KAM_SHORT, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 29 Apr 2020 14:47:41 -0000 Since the the U marker can only be applied to 2 unsigned long arguments, add a C wrapper for prctl, process_vm_readv and process_vm_writev syscals which have more than 2 unsigned long arguments. --- sysdeps/unix/sysv/linux/Makefile | 3 +- sysdeps/unix/sysv/linux/prctl.c | 39 +++++++++++++++++++++ sysdeps/unix/sysv/linux/process_vm_readv.c | 32 +++++++++++++++++ sysdeps/unix/sysv/linux/process_vm_writev.c | 32 +++++++++++++++++ sysdeps/unix/sysv/linux/syscalls.list | 3 -- 5 files changed, 105 insertions(+), 4 deletions(-) create mode 100644 sysdeps/unix/sysv/linux/prctl.c create mode 100644 sysdeps/unix/sysv/linux/process_vm_readv.c create mode 100644 sysdeps/unix/sysv/linux/process_vm_writev.c diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile index 089a4899d5..1d9a8d3cdb 100644 --- a/sysdeps/unix/sysv/linux/Makefile +++ b/sysdeps/unix/sysv/linux/Makefile @@ -59,7 +59,8 @@ sysdep_routines += adjtimex clone umount umount2 readahead sysctl \ eventfd eventfd_read eventfd_write prlimit \ personality epoll_wait tee vmsplice splice \ open_by_handle_at mlock2 pkey_mprotect pkey_set pkey_get \ - timerfd_gettime timerfd_settime + timerfd_gettime timerfd_settime prctl \ + process_vm_readv process_vm_writev CFLAGS-gethostid.c = -fexceptions CFLAGS-tee.c = -fexceptions -fasynchronous-unwind-tables diff --git a/sysdeps/unix/sysv/linux/prctl.c b/sysdeps/unix/sysv/linux/prctl.c new file mode 100644 index 0000000000..e0e5ef4e47 --- /dev/null +++ b/sysdeps/unix/sysv/linux/prctl.c @@ -0,0 +1,39 @@ +/* prctl - Linux specific syscall. + Copyright (C) 2020 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 + . */ + +#include +#include +#include + +extern int prctl (int, unsigned long, unsigned long, unsigned long, + unsigned long); +hidden_proto (prctl) +extern int __prctl (int, unsigned long, unsigned long, unsigned long, + unsigned long); +hidden_proto (__prctl) + +int +__prctl (int option, unsigned long arg2, unsigned long arg3, + unsigned long arg4, unsigned long arg5) +{ + return INLINE_SYSCALL_CALL (prctl, option, arg2, arg3, arg4, arg5); +} + +hidden_def (__prctl) +weak_alias (__prctl, prctl) +hidden_weak (prctl) diff --git a/sysdeps/unix/sysv/linux/process_vm_readv.c b/sysdeps/unix/sysv/linux/process_vm_readv.c new file mode 100644 index 0000000000..1e711abe43 --- /dev/null +++ b/sysdeps/unix/sysv/linux/process_vm_readv.c @@ -0,0 +1,32 @@ +/* process_vm_readv - Linux specific syscall. + Copyright (C) 2020 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 + . */ + +#include +#include +#include +#include + +ssize_t +process_vm_readv (pid_t pid, const struct iovec *local_iov, + unsigned long liovcnt, const struct iovec *remote_iov, + unsigned long riovcnt, unsigned long flags) +{ + return INLINE_SYSCALL_CALL (process_vm_readv, pid, local_iov, + liovcnt, remote_iov, riovcnt, flags); +} + diff --git a/sysdeps/unix/sysv/linux/process_vm_writev.c b/sysdeps/unix/sysv/linux/process_vm_writev.c new file mode 100644 index 0000000000..e41058750b --- /dev/null +++ b/sysdeps/unix/sysv/linux/process_vm_writev.c @@ -0,0 +1,32 @@ +/* process_vm_writev - Linux specific syscall. + Copyright (C) 2020 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 + . */ + +#include +#include +#include +#include + +ssize_t +process_vm_writev (pid_t pid, const struct iovec *local_iov, + unsigned long liovcnt, const struct iovec *remote_iov, + unsigned long riovcnt, unsigned long flags) +{ + return INLINE_SYSCALL_CALL (process_vm_writev, pid, local_iov, + liovcnt, remote_iov, riovcnt, flags); +} + diff --git a/sysdeps/unix/sysv/linux/syscalls.list b/sysdeps/unix/sysv/linux/syscalls.list index 5b4e205934..1d8893d1b8 100644 --- a/sysdeps/unix/sysv/linux/syscalls.list +++ b/sysdeps/unix/sysv/linux/syscalls.list @@ -43,7 +43,6 @@ nfsservctl EXTRA nfsservctl i:ipp __compat_nfsservctl nfsservctl@GLIBC_2.0:GLIBC pipe - pipe i:f __pipe pipe pipe2 - pipe2 i:fi __pipe2 pipe2 pivot_root EXTRA pivot_root i:ss pivot_root -prctl EXTRA prctl i:iiiii __prctl prctl query_module EXTRA query_module i:sipip __compat_query_module query_module@GLIBC_2.0:GLIBC_2.23 quotactl EXTRA quotactl i:isip quotactl remap_file_pages - remap_file_pages i:pUiUi __remap_file_pages remap_file_pages @@ -98,8 +97,6 @@ name_to_handle_at EXTRA name_to_handle_at i:isppi name_to_handle_at setns EXTRA setns i:ii setns -process_vm_readv EXTRA process_vm_readv i:ipipii process_vm_readv -process_vm_writev EXTRA process_vm_writev i:ipipii process_vm_writev memfd_create EXTRA memfd_create i:si memfd_create pkey_alloc EXTRA pkey_alloc i:ii pkey_alloc pkey_free EXTRA pkey_free i:i pkey_free -- 2.25.4