331 lines
13 KiB
C
331 lines
13 KiB
C
/* $NetBSD: compat_mod.c,v 1.7 2009/01/13 20:47:47 martin Exp $ */
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/*-
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* Copyright (c) 2008 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software developed for The NetBSD Foundation
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* by Andrew Doran.
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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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Linkage for the compat module: spaghetti.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: compat_mod.c,v 1.7 2009/01/13 20:47:47 martin Exp $");
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#ifdef _KERNEL_OPT
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#include "opt_compat_netbsd.h"
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#include "opt_compat_43.h"
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#include "opt_ntp.h"
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#include "opt_sysv.h"
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#include "opt_lfs.h"
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#endif
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#include <sys/systm.h>
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#include <sys/module.h>
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#include <sys/rwlock.h>
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#include <sys/tty.h>
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#include <sys/signalvar.h>
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#include <sys/sched.h> /* for cpuset_t */
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#include <sys/syscall.h>
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#include <sys/syscallargs.h>
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#include <sys/syscallvar.h>
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#include <uvm/uvm_extern.h>
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#include <uvm/uvm_object.h>
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#include <compat/common/compat_util.h>
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MODULE(MODULE_CLASS_MISC, compat, NULL);
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int ttcompat(struct tty *, u_long, void *, int, struct lwp *);
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#ifdef COMPAT_16
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extern char sigcode[], esigcode[];
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struct uvm_object *emul_netbsd_object;
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#endif
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extern krwlock_t exec_lock;
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extern krwlock_t ttcompat_lock;
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static const struct syscall_package compat_syscalls[] = {
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#if defined(COMPAT_43)
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{ SYS_compat_43_fstat43, 0, (sy_call_t *)compat_43_sys_fstat },
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{ SYS_compat_43_lstat43, 0, (sy_call_t *)compat_43_sys_lstat },
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{ SYS_compat_43_oaccept, 0, (sy_call_t *)compat_43_sys_accept },
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{ SYS_compat_43_ocreat, 0, (sy_call_t *)compat_43_sys_creat },
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{ SYS_compat_43_oftruncate, 0, (sy_call_t *)compat_43_sys_ftruncate },
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{ SYS_compat_43_ogetdirentries, 0, (sy_call_t *)compat_43_sys_getdirentries },
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{ SYS_compat_43_ogetdtablesize, 0, (sy_call_t *)compat_43_sys_getdtablesize },
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{ SYS_compat_43_ogethostid, 0, (sy_call_t *)compat_43_sys_gethostid },
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{ SYS_compat_43_ogethostname, 0, (sy_call_t *)compat_43_sys_gethostname },
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{ SYS_compat_43_ogetkerninfo, 0, (sy_call_t *)compat_43_sys_getkerninfo },
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{ SYS_compat_43_ogetpagesize, 0, (sy_call_t *)compat_43_sys_getpagesize },
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{ SYS_compat_43_ogetpeername, 0, (sy_call_t *)compat_43_sys_getpeername },
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{ SYS_compat_43_ogetrlimit, 0, (sy_call_t *)compat_43_sys_getrlimit },
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{ SYS_compat_43_ogetsockname, 0, (sy_call_t *)compat_43_sys_getsockname },
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{ SYS_compat_43_okillpg, 0, (sy_call_t *)compat_43_sys_killpg },
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{ SYS_compat_43_olseek, 0, (sy_call_t *)compat_43_sys_lseek },
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{ SYS_compat_43_ommap, 0, (sy_call_t *)compat_43_sys_mmap },
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{ SYS_compat_43_oquota, 0, (sy_call_t *)compat_43_sys_quota },
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{ SYS_compat_43_orecv, 0, (sy_call_t *)compat_43_sys_recv },
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{ SYS_compat_43_orecvfrom, 0, (sy_call_t *)compat_43_sys_recvfrom },
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{ SYS_compat_43_orecvmsg, 0, (sy_call_t *)compat_43_sys_recvmsg },
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{ SYS_compat_43_osend, 0, (sy_call_t *)compat_43_sys_send },
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{ SYS_compat_43_osendmsg, 0, (sy_call_t *)compat_43_sys_sendmsg },
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{ SYS_compat_43_osethostid, 0, (sy_call_t *)compat_43_sys_sethostid },
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{ SYS_compat_43_osethostname, 0, (sy_call_t *)compat_43_sys_sethostname },
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{ SYS_compat_43_osetrlimit, 0, (sy_call_t *)compat_43_sys_setrlimit },
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{ SYS_compat_43_osigblock, 0, (sy_call_t *)compat_43_sys_sigblock },
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{ SYS_compat_43_osigsetmask, 0, (sy_call_t *)compat_43_sys_sigsetmask },
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{ SYS_compat_43_osigstack, 0, (sy_call_t *)compat_43_sys_sigstack },
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{ SYS_compat_43_osigvec, 0, (sy_call_t *)compat_43_sys_sigvec },
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{ SYS_compat_43_otruncate, 0, (sy_call_t *)compat_43_sys_truncate },
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{ SYS_compat_43_owait, 0, (sy_call_t *)compat_43_sys_wait },
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{ SYS_compat_43_stat43, 0, (sy_call_t *)compat_43_sys_stat },
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#endif
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#if defined(COMPAT_09)
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{ SYS_compat_09_ogetdomainname, 0, (sy_call_t *)compat_09_sys_getdomainname },
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{ SYS_compat_09_osetdomainname, 0, (sy_call_t *)compat_09_sys_setdomainname },
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{ SYS_compat_09_ouname, 0, (sy_call_t *)compat_09_sys_uname },
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#endif
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#if defined(COMPAT_10) && !defined(_LP64)
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# if defined(SYSVMSG)
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{ SYS_compat_10_omsgsys, 0, (sy_call_t *)compat_10_sys_msgsys },
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# endif
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# if defined(SYSVSEM)
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{ SYS_compat_10_osemsys, 0, (sy_call_t *)compat_10_sys_semsys },
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# endif
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# if defined(SYSVSHM)
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{ SYS_compat_10_oshmsys, 0, (sy_call_t *)compat_10_sys_shmsys },
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# endif
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#endif /* defined(COMPAT_10) && !defined(_LP64) */
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#if defined(COMPAT_12)
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{ SYS_compat_12_fstat12, 0, (sy_call_t *)compat_12_sys_fstat },
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{ SYS_compat_12_getdirentries, 0, (sy_call_t *)compat_12_sys_getdirentries },
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{ SYS_compat_12_lstat12, 0, (sy_call_t *)compat_12_sys_lstat },
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{ SYS_compat_12_msync, 0, (sy_call_t *)compat_12_sys_msync },
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{ SYS_compat_12_oreboot, 0, (sy_call_t *)compat_12_sys_reboot },
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{ SYS_compat_12_oswapon, 0, (sy_call_t *)compat_12_sys_swapon },
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{ SYS_compat_12_stat12, 0, (sy_call_t *)compat_12_sys_stat },
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#endif
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#if defined(COMPAT_13)
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{ SYS_compat_13_sigaction13, 0, (sy_call_t *)compat_13_sys_sigaction },
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{ SYS_compat_13_sigaltstack13, 0, (sy_call_t *)compat_13_sys_sigaltstack },
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{ SYS_compat_13_sigpending13, 0, (sy_call_t *)compat_13_sys_sigpending },
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{ SYS_compat_13_sigprocmask13, 0, (sy_call_t *)compat_13_sys_sigprocmask },
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{ SYS_compat_13_sigreturn13, 0, (sy_call_t *)compat_13_sys_sigreturn },
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{ SYS_compat_13_sigsuspend13, 0, (sy_call_t *)compat_13_sys_sigsuspend },
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#endif
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#if defined(COMPAT_14)
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# if defined(SYSVSEM)
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{ SYS_compat_14___semctl, 0, (sy_call_t *)compat_14_sys___semctl },
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# endif
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# if defined(SYSVMSG)
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{ SYS_compat_14_msgctl, 0, (sy_call_t *)compat_14_sys_msgctl },
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# endif
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# if defined(SYSVSHM)
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{ SYS_compat_14_shmctl, 0, (sy_call_t *)compat_14_sys_shmctl },
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# endif
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#endif
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#if defined(COMPAT_16)
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{ SYS_compat_16___sigaction14, 0, (sy_call_t *)compat_16_sys___sigaction14 },
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{ SYS_compat_16___sigreturn14, 0, (sy_call_t *)compat_16_sys___sigreturn14 },
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#endif
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#if defined(COMPAT_20)
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{ SYS_compat_20_fhstatfs, 0, (sy_call_t *)compat_20_sys_fhstatfs },
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{ SYS_compat_20_fstatfs, 0, (sy_call_t *)compat_20_sys_fstatfs },
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{ SYS_compat_20_getfsstat, 0, (sy_call_t *)compat_20_sys_getfsstat },
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{ SYS_compat_20_statfs, 0, (sy_call_t *)compat_20_sys_statfs },
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#endif
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#if defined(COMPAT_30)
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{ SYS_compat_30___fhstat30, 0, (sy_call_t *)compat_30_sys___fhstat30 },
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{ SYS_compat_30___fstat13, 0, (sy_call_t *)compat_30_sys___fstat13 },
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{ SYS_compat_30___lstat13, 0, (sy_call_t *)compat_30_sys___lstat13 },
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{ SYS_compat_30___stat13, 0, (sy_call_t *)compat_30_sys___stat13 },
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{ SYS_compat_30_fhopen, 0, (sy_call_t *)compat_30_sys_fhopen },
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{ SYS_compat_30_fhstat, 0, (sy_call_t *)compat_30_sys_fhstat },
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{ SYS_compat_30_fhstatvfs1, 0, (sy_call_t *)compat_30_sys_fhstatvfs1 },
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{ SYS_compat_30_getdents, 0, (sy_call_t *)compat_30_sys_getdents },
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{ SYS_compat_30_getfh, 0, (sy_call_t *)compat_30_sys_getfh },
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{ SYS_compat_30_socket, 0, (sy_call_t *)compat_30_sys_socket },
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#endif
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#if defined(COMPAT_40)
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{ SYS_compat_40_mount, 0, (sy_call_t *)compat_40_sys_mount },
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#endif
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#if defined(COMPAT_50)
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{ SYS_compat_50_wait4, 0, (sy_call_t *)compat_50_sys_wait4 },
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{ SYS_compat_50_mknod, 0, (sy_call_t *)compat_50_sys_mknod },
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{ SYS_compat_50_setitimer, 0, (sy_call_t *)compat_50_sys_setitimer },
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{ SYS_compat_50_getitimer, 0, (sy_call_t *)compat_50_sys_getitimer },
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{ SYS_compat_50_select, 0, (sy_call_t *)compat_50_sys_select },
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{ SYS_compat_50_gettimeofday, 0, (sy_call_t *)compat_50_sys_gettimeofday },
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{ SYS_compat_50_getrusage, 0, (sy_call_t *)compat_50_sys_getrusage },
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{ SYS_compat_50_settimeofday, 0, (sy_call_t *)compat_50_sys_settimeofday },
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{ SYS_compat_50_utimes, 0, (sy_call_t *)compat_50_sys_utimes },
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{ SYS_compat_50_adjtime, 0, (sy_call_t *)compat_50_sys_adjtime },
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#ifdef LFS
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{ SYS_compat_50_lfs_segwait, 0, (sy_call_t *)compat_50_sys_lfs_segwait },
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#endif
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{ SYS_compat_50_futimes, 0, (sy_call_t *)compat_50_sys_futimes },
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{ SYS_compat_50_clock_gettime, 0, (sy_call_t *)compat_50_sys_clock_gettime },
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{ SYS_compat_50_clock_settime, 0, (sy_call_t *)compat_50_sys_clock_settime },
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{ SYS_compat_50_clock_getres, 0, (sy_call_t *)compat_50_sys_clock_getres },
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{ SYS_compat_50_timer_settime, 0, (sy_call_t *)compat_50_sys_timer_settime },
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{ SYS_compat_50_timer_gettime, 0, (sy_call_t *)compat_50_sys_timer_gettime },
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{ SYS_compat_50_nanosleep, 0, (sy_call_t *)compat_50_sys_nanosleep },
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{ SYS_compat_50___sigtimedwait, 0, (sy_call_t *)compat_50_sys___sigtimedwait },
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{ SYS_compat_50_mq_timedsend, 0, (sy_call_t *)compat_50_sys_mq_timedsend },
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{ SYS_compat_50_mq_timedreceive, 0, (sy_call_t *)compat_50_sys_mq_timedreceive },
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{ SYS_compat_50_lutimes, 0, (sy_call_t *)compat_50_sys_lutimes },
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# if defined(SYSVSEM)
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{ SYS_compat_50_____semctl13, 0, (sy_call_t *)compat_50_sys_____semctl13 },
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# endif
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# if defined(SYSVMSG)
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{ SYS_compat_50___msgctl13, 0, (sy_call_t *)compat_50_sys___msgctl13 },
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# endif
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# if defined(SYSVSHM)
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{ SYS_compat_50___shmctl13, 0, (sy_call_t *)compat_50_sys___shmctl13 },
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# endif
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{ SYS_compat_50__lwp_park, 0, (sy_call_t *)compat_50_sys__lwp_park },
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{ SYS_compat_50_kevent, 0, (sy_call_t *)compat_50_sys_kevent },
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{ SYS_compat_50_pselect, 0, (sy_call_t *)compat_50_sys_pselect },
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{ SYS_compat_50_pollts, 0, (sy_call_t *)compat_50_sys_pollts },
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{ SYS_compat_50___stat30, 0, (sy_call_t *)compat_50_sys___stat30 },
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{ SYS_compat_50___fstat30, 0, (sy_call_t *)compat_50_sys___fstat30 },
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{ SYS_compat_50___lstat30, 0, (sy_call_t *)compat_50_sys___lstat30 },
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# if defined(NTP)
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{ SYS_compat_50___ntp_gettime30, 0, (sy_call_t *)compat_50_sys___ntp_gettime30 },
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# endif
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{ SYS_compat_50___fhstat40, 0, (sy_call_t *)compat_50_sys___fhstat40 },
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{ SYS_compat_50_aio_suspend, 0, (sy_call_t *)compat_50_sys_aio_suspend },
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#endif
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{ 0, 0, NULL },
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};
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static int
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compat_modcmd(modcmd_t cmd, void *arg)
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{
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#ifdef COMPAT_16
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proc_t *p;
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#endif
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int error;
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switch (cmd) {
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case MODULE_CMD_INIT:
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error = syscall_establish(NULL, compat_syscalls);
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if (error != 0) {
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return error;
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}
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#ifdef COMPAT_43
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KASSERT(ttcompatvec == NULL);
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ttcompatvec = ttcompat;
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#endif
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#ifdef COMPAT_16
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KASSERT(emul_netbsd.e_sigobject == NULL);
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rw_enter(&exec_lock, RW_WRITER);
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emul_netbsd.e_sigcode = sigcode;
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emul_netbsd.e_esigcode = esigcode;
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emul_netbsd.e_sigobject = &emul_netbsd_object;
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rw_exit(&exec_lock);
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KASSERT(sendsig_sigcontext_vec == NULL);
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sendsig_sigcontext_vec = sendsig_sigcontext;
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#endif
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#if defined(COMPAT_09) || defined(COMPAT_43)
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compat_sysctl_init();
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#endif
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return 0;
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case MODULE_CMD_FINI:
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#ifdef COMPAT_16
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/*
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* Ensure sendsig_sigcontext() is not being used.
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* module_lock prevents the flag being set on any
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* further processes while we are here. See
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* sigaction1() for the opposing half.
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*/
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mutex_enter(proc_lock);
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PROCLIST_FOREACH(p, &allproc) {
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if ((p->p_lflag & PL_SIGCOMPAT) != 0) {
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break;
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}
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}
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mutex_exit(proc_lock);
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if (p != NULL) {
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return EBUSY;
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}
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#endif
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/* Unlink the the system calls. */
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error = syscall_disestablish(NULL, compat_syscalls);
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if (error != 0) {
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return error;
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}
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#ifdef COMPAT_43
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/* Unlink ttcompatvec. */
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if (rw_tryenter(&ttcompat_lock, RW_WRITER)) {
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ttcompatvec = NULL;
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rw_exit(&ttcompat_lock);
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} else {
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error = syscall_establish(NULL, compat_syscalls);
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KASSERT(error == 0);
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return EBUSY;
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}
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#endif
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#ifdef COMPAT_16
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/*
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* The sigobject may persist if still in use, but
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* is reference counted so will die eventually.
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*/
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rw_enter(&exec_lock, RW_WRITER);
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if (emul_netbsd_object != NULL) {
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(*emul_netbsd_object->pgops->pgo_detach)
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(emul_netbsd_object);
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}
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emul_netbsd_object = NULL;
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emul_netbsd.e_sigcode = NULL;
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emul_netbsd.e_esigcode = NULL;
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emul_netbsd.e_sigobject = NULL;
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rw_exit(&exec_lock);
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#endif /* COMPAT_16 */
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#if defined(COMPAT_09) || defined(COMPAT_43)
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compat_sysctl_fini();
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#endif
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return 0;
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default:
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return ENOTTY;
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}
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}
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