76b2bfeda4
Move dtrace SDT definitions into linux_common module code. Also, build linux_dummy.c into the linux_common kld -- we don't need separate versions of these stubs for 32- and 64-bit emulation. Reported by: several PR: 250897 Discussed with: emaste, trasz Tested by: John Kennedy, Yasuhiro KIMURA, Oleg Sidorkin X-MFC-With: r367395 Differential Revision: https://reviews.freebsd.org/D27124
125 lines
4.2 KiB
C
125 lines
4.2 KiB
C
/*-
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* Copyright (c) 2014 Vassilis Laganakos
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/exec.h>
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#include <sys/imgact.h>
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#include <sys/imgact_elf.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/eventhandler.h>
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#include <sys/sx.h>
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#include <sys/sysctl.h>
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#include <compat/linux/linux.h>
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#include <compat/linux/linux_dtrace.h>
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#include <compat/linux/linux_emul.h>
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#include <compat/linux/linux_ioctl.h>
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#include <compat/linux/linux_mib.h>
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#include <compat/linux/linux_util.h>
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FEATURE(linuxulator_v4l, "V4L ioctl wrapper support in the linuxulator");
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FEATURE(linuxulator_v4l2, "V4L2 ioctl wrapper support in the linuxulator");
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MODULE_VERSION(linux_common, 1);
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/**
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* Special DTrace provider for the linuxulator.
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*
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* In this file we define the provider for the entire linuxulator. All
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* modules (= files of the linuxulator) use it.
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*
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* We define a different name depending on the emulated bitsize, see
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* ../../<ARCH>/linux{,32}/linux.h, e.g.:
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* native bitsize = linuxulator
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* amd64, 32bit emulation = linuxulator32
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*/
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LIN_SDT_PROVIDER_DEFINE(linuxulator);
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LIN_SDT_PROVIDER_DEFINE(linuxulator32);
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SET_DECLARE(linux_device_handler_set, struct linux_device_handler);
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TAILQ_HEAD(, linux_ioctl_handler_element) linux_ioctl_handlers =
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TAILQ_HEAD_INITIALIZER(linux_ioctl_handlers);
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struct sx linux_ioctl_sx;
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SX_SYSINIT(linux_ioctl, &linux_ioctl_sx, "Linux ioctl handlers");
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static eventhandler_tag linux_exec_tag;
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static eventhandler_tag linux_thread_dtor_tag;
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static eventhandler_tag linux_exit_tag;
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static int
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linux_common_modevent(module_t mod, int type, void *data)
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{
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struct linux_device_handler **ldhp;
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switch(type) {
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case MOD_LOAD:
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#ifdef INVARIANTS
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linux_check_errtbl();
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#endif
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linux_dev_shm_create();
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linux_osd_jail_register();
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linux_exit_tag = EVENTHANDLER_REGISTER(process_exit,
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linux_proc_exit, NULL, 1000);
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linux_exec_tag = EVENTHANDLER_REGISTER(process_exec,
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linux_proc_exec, NULL, 1000);
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linux_thread_dtor_tag = EVENTHANDLER_REGISTER(thread_dtor,
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linux_thread_dtor, NULL, EVENTHANDLER_PRI_ANY);
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SET_FOREACH(ldhp, linux_device_handler_set)
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linux_device_register_handler(*ldhp);
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LIST_INIT(&futex_list);
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mtx_init(&futex_mtx, "ftllk", NULL, MTX_DEF);
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break;
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case MOD_UNLOAD:
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linux_dev_shm_destroy();
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linux_osd_jail_deregister();
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SET_FOREACH(ldhp, linux_device_handler_set)
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linux_device_unregister_handler(*ldhp);
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mtx_destroy(&futex_mtx);
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EVENTHANDLER_DEREGISTER(process_exit, linux_exit_tag);
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EVENTHANDLER_DEREGISTER(process_exec, linux_exec_tag);
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EVENTHANDLER_DEREGISTER(thread_dtor, linux_thread_dtor_tag);
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break;
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default:
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return (EOPNOTSUPP);
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}
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return (0);
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}
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static moduledata_t linux_common_mod = {
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"linuxcommon",
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linux_common_modevent,
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0
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};
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DECLARE_MODULE(linuxcommon, linux_common_mod, SI_SUB_EXEC, SI_ORDER_ANY);
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MODULE_VERSION(linuxcommon, 1);
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