NetBSD/sys/compat/mach/mach_exec.c

149 lines
4.1 KiB
C

/* $NetBSD: mach_exec.c,v 1.2 2001/07/29 21:26:07 christos Exp $ */
/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/exec.h>
#include <sys/malloc.h>
#include <sys/syscall.h>
#include <compat/mach/mach_types.h>
#include <compat/mach/mach_exec.h>
extern char sigcode[], esigcode[];
extern struct sysent sysent[];
#ifdef SYSCALL_DEBUG
extern const char * const syscallnames[];
#endif
#ifndef __HAVE_SYSCALL_INTERN
void syscall __P((void));
#else
void mach_syscall_intern __P((struct proc *));
#endif
const struct emul emul_mach = {
"mach",
"/emul/mach",
#ifndef __HAVE_MINIMAL_EMUL
0,
0,
SYS_syscall,
SYS_MAXSYSCALL,
#endif
sysent,
#ifdef SYSCALL_DEBUG
syscallnames,
#else
NULL,
#endif
sendsig,
trapsignal,
sigcode,
esigcode,
NULL,
NULL,
NULL,
#ifdef __HAVE_SYSCALL_INTERN
mach_syscall_intern,
#else
syscall,
#endif
};
/*
* Copy arguments onto the stack in the normal way, but add some
* extra information in case of dynamic binding.
*/
int
exec_mach_copyargs(struct exec_package *pack, struct ps_strings *arginfo,
char **stackp, void *argp)
{
char path[MAXPATHLEN];
size_t len;
size_t zero = 0;
int error;
if ((error = copyargs(pack, arginfo, stackp, argp)) != 0) {
DPRINTF(("mach: copyargs failed\n"));
return error;
}
if ((error = copyout(&zero, *stackp, sizeof(zero))) != 0) {
DPRINTF(("mach: copyout first zero failed\n"));
return error;
}
*stackp += sizeof(zero);
/* do the really stupid thing */
if ((error = copyinstr(pack->ep_name, path, MAXPATHLEN, &len)) != 0) {
DPRINTF(("mach: copyinstr %p failed\n", pack->ep_name));
return error;
}
if ((error = copyout(path, *stackp, len)) != 0) {
DPRINTF(("mach: copyout path failed\n"));
return error;
}
*stackp += len;
len = len % sizeof(zero);
if (len) {
if ((error = copyout(&zero, *stackp, len)) != 0) {
DPRINTF(("mach: zero align %d failed\n", len));
return error;
}
*stackp += len;
}
if ((error = copyout(&zero, *stackp, sizeof(zero))) != 0) {
DPRINTF(("mach: copyout second zero failed\n"));
return error;
}
*stackp += sizeof(zero);
return 0;
}
int
exec_mach_probe(char **path) {
*path = malloc(strlen(emul_mach.e_path) + 1, M_TEMP, M_WAITOK);
(void)strcpy(*path, emul_mach.e_path);
return 0;
}