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netbsd32_wait.c revision 1.12.6.2 
      1 /*	$NetBSD: netbsd32_wait.c,v 1.12.6.2 2007/03/29 19:27:42 reinoud 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  * 3. The name of the author may not be used to endorse or promote products
     16  *    derived from this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     23  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     24  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     25  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     26  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     28  * SUCH DAMAGE.
     29  */
     30 
     31 #include <sys/cdefs.h>
     32 __KERNEL_RCSID(0, "$NetBSD: netbsd32_wait.c,v 1.12.6.2 2007/03/29 19:27:42 reinoud Exp $");
     33 
     34 #include <sys/param.h>
     35 #include <sys/systm.h>
     36 #include <sys/mount.h>
     37 #include <sys/time.h>
     38 #include <sys/wait.h>
     39 #include <sys/ptrace.h>
     40 #include <sys/resourcevar.h>
     41 #include <sys/vnode.h>
     42 #include <sys/pool.h>
     43 #include <sys/proc.h>
     44 #include <sys/dirent.h>
     45 
     46 #include <compat/netbsd32/netbsd32.h>
     47 #include <compat/netbsd32/netbsd32_syscallargs.h>
     48 #include <compat/netbsd32/netbsd32_conv.h>
     49 
     50 int
     51 netbsd32_wait4(l, v, retval)
     52 	struct lwp *l;
     53 	void *v;
     54 	register_t *retval;
     55 {
     56 	struct netbsd32_wait4_args /* {
     57 		syscallarg(int) pid;
     58 		syscallarg(netbsd32_intp) status;
     59 		syscallarg(int) options;
     60 		syscallarg(netbsd32_rusagep_t) rusage;
     61 	} */ *uap = v;
     62 	struct sys_wait4_args ua;
     63 	void *sg;
     64 	struct rusage *ruup = NULL;
     65 	int error;
     66 
     67 	if (SCARG_P32(uap, rusage)) {
     68 		sg = stackgap_init(l->l_proc, sizeof(*ruup));
     69 		ruup = (struct rusage *)stackgap_alloc(l->l_proc, &sg,
     70 		    sizeof(*ruup));
     71 		if (ruup == NULL)
     72 			return ENOMEM;
     73 	}
     74 
     75 	NETBSD32TO64_UAP(pid);
     76 	NETBSD32TOP_UAP(status, int);
     77 	NETBSD32TO64_UAP(options);
     78 	SCARG(&ua, rusage) = ruup;
     79 
     80 	error = sys_wait4(l, &ua, retval);
     81 	if (error)
     82 		return error;
     83 
     84 	if (ruup != NULL) {
     85 		struct netbsd32_rusage ru32;
     86 		struct rusage rus;
     87 
     88 		error = copyin(ruup, &rus, sizeof(rus));
     89 		if (error)
     90 			return error;
     91 		netbsd32_from_rusage(&rus, &ru32);
     92 		error = copyout(&ru32, SCARG_P32(uap, rusage), sizeof(ru32));
     93 	}
     94 
     95 	return error;
     96 }
     97 
     98 int
     99 netbsd32_getrusage(l, v, retval)
    100 	struct lwp *l;
    101 	void *v;
    102 	register_t *retval;
    103 {
    104 	struct netbsd32_getrusage_args /* {
    105 		syscallarg(int) who;
    106 		syscallarg(netbsd32_rusagep_t) rusage;
    107 	} */ *uap = v;
    108 	struct proc *p = l->l_proc;
    109 	struct rusage *rup;
    110 	struct netbsd32_rusage ru;
    111 
    112 	switch (SCARG(uap, who)) {
    113 
    114 	case RUSAGE_SELF:
    115 		rup = &p->p_stats->p_ru;
    116 		mutex_enter(&p->p_smutex);
    117 		calcru(p, &rup->ru_utime, &rup->ru_stime, NULL, NULL);
    118 		mutex_exit(&p->p_smutex);
    119 		break;
    120 
    121 	case RUSAGE_CHILDREN:
    122 		rup = &p->p_stats->p_cru;
    123 		break;
    124 
    125 	default:
    126 		return (EINVAL);
    127 	}
    128 	netbsd32_from_rusage(rup, &ru);
    129 	return copyout(&ru, SCARG_P32(uap, rusage), sizeof(ru));
    130 }
    131