From patchwork Sun Mar 18 19:44:50 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Samuel Thibault X-Patchwork-Id: 26370 Received: (qmail 17498 invoked by alias); 18 Mar 2018 19:53:13 -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 17488 invoked by uid 89); 18 Mar 2018 19:53:13 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-26.1 required=5.0 tests=BAYES_00, GIT_PATCH_0, GIT_PATCH_1, GIT_PATCH_2, GIT_PATCH_3, KAM_SHORT, SPF_HELO_PASS, SPF_NEUTRAL autolearn=ham version=3.3.2 spammy=H*r:sk:static- X-HELO: hera.aquilenet.fr From: Samuel Thibault To: libc-alpha@sourceware.org Cc: Samuel Thibault Subject: [hurd,commited 4/5] hurd: Add mlockall support Date: Sun, 18 Mar 2018 20:44:50 +0100 Message-Id: <20180318194451.11862-5-samuel.thibault@ens-lyon.org> In-Reply-To: <20180318194451.11862-1-samuel.thibault@ens-lyon.org> References: <20180318194451.11862-1-samuel.thibault@ens-lyon.org> * sysdeps/mach/hurd/mlockall.c: New file. * sysdeps/mach/hurd/munlockall.c: New file. --- ChangeLog | 2 ++ sysdeps/mach/hurd/mlockall.c | 42 ++++++++++++++++++++++++++++++++++++++++++ sysdeps/mach/hurd/munlockall.c | 40 ++++++++++++++++++++++++++++++++++++++++ 3 files changed, 84 insertions(+) create mode 100644 sysdeps/mach/hurd/mlockall.c create mode 100644 sysdeps/mach/hurd/munlockall.c diff --git a/ChangeLog b/ChangeLog index e090c75b74..1a34efca45 100644 --- a/ChangeLog +++ b/ChangeLog @@ -70,6 +70,8 @@ if flags contains O_DIRECTORY and the result is a directory. * sysdeps/mach/hurd/i386/init-first.c (init): Also find ELF headers by oneself when the pointer given in D is nul (as set by ext2fs). + * sysdeps/mach/hurd/mlockall.c: New file. + * sysdeps/mach/hurd/munlockall.c: New file. 2018-03-17 Samuel Thibault diff --git a/sysdeps/mach/hurd/mlockall.c b/sysdeps/mach/hurd/mlockall.c new file mode 100644 index 0000000000..6fa944b21f --- /dev/null +++ b/sysdeps/mach/hurd/mlockall.c @@ -0,0 +1,42 @@ +/* mlockall -- lock in core all the pages in this process. Hurd version. + Copyright (C) 2001-2018 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 +#include + +/* Cause all currently mapped pages of the process to be memory resident + until unlocked by a call to the `munlockall', until the process exits, + or until the process calls `execve'. */ + +int +mlockall (int flags) +{ + mach_port_t host; + error_t err; + + err = __get_privileged_ports (&host, NULL); + if (err) + return __hurd_fail (err); + + err = __vm_wire_all (host, __mach_task_self (), flags); + __mach_port_deallocate (__mach_task_self (), host); + return err ? __hurd_fail (err) : 0; +} diff --git a/sysdeps/mach/hurd/munlockall.c b/sysdeps/mach/hurd/munlockall.c new file mode 100644 index 0000000000..615b77f034 --- /dev/null +++ b/sysdeps/mach/hurd/munlockall.c @@ -0,0 +1,40 @@ +/* munlockall -- undo the effects of all prior mlock calls. Hurd version. + Copyright (C) 2001-2018 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 +#include + +/* Undo the effects of all prior mlock calls in this process. */ + +int +munlockall (void) +{ + mach_port_t host; + error_t err; + + err = __get_privileged_ports (&host, NULL); + if (err) + return __hurd_fail (err); + + err = __vm_wire_all (host, __mach_task_self (), VM_WIRE_NONE); + __mach_port_deallocate (__mach_task_self (), host); + return err ? __hurd_fail (err) : 0; +}