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netbsd32_execve.c revision 1.32 
      1 /*	$NetBSD: netbsd32_execve.c,v 1.32 2008/05/29 14:51:26 mrg Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1998, 2001 Matthew R. Green
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     21  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     22  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     23  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     24  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 #include <sys/cdefs.h>
     30 
     31 __KERNEL_RCSID(0, "$NetBSD: netbsd32_execve.c,v 1.32 2008/05/29 14:51:26 mrg Exp $");
     32 
     33 #include <sys/param.h>
     34 #include <sys/systm.h>
     35 #include <sys/mount.h>
     36 #include <sys/stat.h>
     37 #include <sys/vnode.h>
     38 #include <sys/file.h>
     39 #include <sys/filedesc.h>
     40 #include <sys/syscallargs.h>
     41 #include <sys/proc.h>
     42 #include <sys/exec.h>
     43 
     44 #include <compat/netbsd32/netbsd32.h>
     45 #include <compat/netbsd32/netbsd32_syscall.h>
     46 #include <compat/netbsd32/netbsd32_syscallargs.h>
     47 
     48 static int
     49 netbsd32_execve_fetch_element(char * const *array, size_t index, char **value)
     50 {
     51 	int error;
     52 	netbsd32_charp const *a32 = (void const *)array;
     53 	netbsd32_charp e;
     54 
     55 	error = copyin(a32 + index, &e, sizeof(e));
     56 	if (error)
     57 		return error;
     58 	*value = (char *)NETBSD32PTR64(e);
     59 	return 0;
     60 }
     61 
     62 int
     63 netbsd32_execve(struct lwp *l, const struct netbsd32_execve_args *uap, register_t *retval)
     64 {
     65 	/* {
     66 		syscallarg(const netbsd32_charp) path;
     67 		syscallarg(netbsd32_charpp) argp;
     68 		syscallarg(netbsd32_charpp) envp;
     69 	} */
     70 	const char *path = SCARG_P32(uap, path);
     71 
     72 	return execve1(l, path, SCARG_P32(uap, argp),
     73 	    SCARG_P32(uap, envp), netbsd32_execve_fetch_element);
     74 }
     75