ibcs2_sysvec.c revision 43621
1/* 2 * Copyright (c) 1995 Steven Wallace 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Steven Wallace. 16 * 4. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 * 30 * $Id: ibcs2_sysvec.c,v 1.13 1999/01/17 20:39:08 peter Exp $ 31 */ 32 33#include <sys/param.h> 34#include <sys/kernel.h> 35#include <sys/module.h> 36#include <sys/sysent.h> 37#include <sys/signalvar.h> 38#include <sys/proc.h> 39#include <i386/ibcs2/ibcs2_syscall.h> 40 41extern int bsd_to_ibcs2_sig[]; 42extern int bsd_to_ibcs2_errno[]; 43extern struct sysent ibcs2_sysent[IBCS2_SYS_MAXSYSCALL]; 44extern int szsigcode; 45extern char sigcode[]; 46 47struct sysentvec ibcs2_svr3_sysvec = { 48 sizeof (ibcs2_sysent) / sizeof (ibcs2_sysent[0]), 49 ibcs2_sysent, 50 0xFF, 51 NSIG, 52 bsd_to_ibcs2_sig, 53 ELAST + 1, 54 bsd_to_ibcs2_errno, 55 0, /* trap-to-signal translation function */ 56 0, /* fixup */ 57 sendsig, 58 sigcode, /* use generic trampoline */ 59 &szsigcode, /* use generic trampoline size */ 60 0, /* prepsyscall */ 61 "IBCS2 COFF", 62 NULL /* we don't have a COFF coredump function */ 63}; 64 65/* 66 * Create an "ibcs2" module that does nothing but allow checking for 67 * the presence of the subsystem. 68 */ 69static int 70ibcs2_modevent(module_t mod, int type, void *unused) 71{ 72 struct proc *p = NULL; 73 74 switch(type) { 75 case MOD_UNLOAD: 76 /* if this was an ELF module we'd use elf_brand_inuse()... */ 77 for (p = allproc.lh_first; p != 0; p = p->p_list.le_next) { 78 if (p->p_sysent == &ibcs2_svr3_sysvec) 79 return EBUSY; 80 } 81 default: 82 /* do not care */ 83 } 84 return 0; 85} 86moduledata_t ibcs2_mod = { 87 "ibcs2", 88 ibcs2_modevent, 89 0 90}; 91DECLARE_MODULE(ibcs2, ibcs2_mod, SI_SUB_PSEUDO, SI_ORDER_ANY); 92