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 * $FreeBSD$
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
41 extern int bsd_to_ibcs2_sig[];
42 extern int bsd_to_ibcs2_errno[];
43 extern struct sysent ibcs2_sysent[IBCS2_SYS_MAXSYSCALL];
44 extern int szsigcode;
45 extern char sigcode[];
46
47 struct 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 */
69 static int
70 ibcs2_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 }
86 moduledata_t ibcs2_mod = {
87 "ibcs2",
88 ibcs2_modevent,
89 0
90 };
91 DECLARE_MODULE(ibcs2, ibcs2_mod, SI_SUB_PSEUDO, SI_ORDER_ANY);
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