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netbsd32_wait.c revision 1.7 
      1 /*	$NetBSD: netbsd32_wait.c,v 1.7 2005/07/10 11:28:03 cube 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 1.7 2005/07/10 11:28:03 cube 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 
     45 #include <compat/netbsd32/netbsd32.h>
     46 #include <compat/netbsd32/netbsd32_syscallargs.h>
     47 #include <compat/netbsd32/netbsd32_conv.h>
     48 
     49 int
     50 netbsd32_wait4(l, v, retval)
     51 	struct lwp *l;
     52 	void *v;
     53 	register_t *retval;
     54 {
     55 	struct netbsd32_wait4_args /* {
     56 		syscallarg(int) pid;
     57 		syscallarg(netbsd32_intp) status;
     58 		syscallarg(int) options;
     59 		syscallarg(netbsd32_rusagep_t) rusage;
     60 	} */ *uap = v;
     61 	struct proc *parent = l->l_proc;
     62 	struct netbsd32_rusage ru32;
     63 	struct proc *child;
     64 	int status, error;
     65 
     66 	if (SCARG(uap, pid) == 0)
     67 		SCARG(uap, pid) = -parent->p_pgid;
     68 	if (SCARG(uap, options) &~ (WUNTRACED|WNOHANG|WALTSIG|WALLSIG))
     69 		return (EINVAL);
     70 
     71 	error =  find_stopped_child(parent, SCARG(uap,pid), SCARG(uap,options),
     72 					&child);
     73 	if (error != 0)
     74 		return error;
     75 	if (child == NULL) {
     76 		retval[0] = 0;
     77 		return 0;
     78 	}
     79 
     80 	/*
     81 	 * Collect child u-areas.
     82 	 */
     83 	uvm_uarea_drain(FALSE);
     84 
     85 	retval[0] = child->p_pid;
     86 
     87 	if (P_ZOMBIE(child)) {
     88 		if (SCARG(uap, status)) {
     89 			status = child->p_xstat;	/* convert to int */
     90 			error = copyout((caddr_t)&status,
     91 				    (caddr_t)NETBSD32PTR64(SCARG(uap, status)),
     92 				    sizeof(status));
     93 			if (error)
     94 				return error;
     95 		}
     96 		if (SCARG(uap, rusage)) {
     97 			netbsd32_from_rusage(child->p_ru, &ru32);
     98 			error = copyout((caddr_t)&ru32,
     99 				    (caddr_t)NETBSD32PTR64(SCARG(uap, rusage)),
    100 				    sizeof(struct netbsd32_rusage));
    101 			if (error)
    102 				return error;
    103 		}
    104 		proc_free(child);
    105 		return 0;
    106 	}
    107 
    108 	if (SCARG(uap, status)) {
    109 		status = W_STOPCODE(child->p_xstat);
    110 		return copyout((caddr_t)&status,
    111 			    (caddr_t)NETBSD32PTR64(SCARG(uap, status)),
    112 			    sizeof(status));
    113 	}
    114 	return 0;
    115 }
    116 
    117 int
    118 netbsd32_getrusage(l, v, retval)
    119 	struct lwp *l;
    120 	void *v;
    121 	register_t *retval;
    122 {
    123 	struct netbsd32_getrusage_args /* {
    124 		syscallarg(int) who;
    125 		syscallarg(netbsd32_rusagep_t) rusage;
    126 	} */ *uap = v;
    127 	struct proc *p = l->l_proc;
    128 	struct rusage *rup;
    129 	struct netbsd32_rusage ru;
    130 
    131 	switch (SCARG(uap, who)) {
    132 
    133 	case RUSAGE_SELF:
    134 		rup = &p->p_stats->p_ru;
    135 		calcru(p, &rup->ru_utime, &rup->ru_stime, NULL);
    136 		break;
    137 
    138 	case RUSAGE_CHILDREN:
    139 		rup = &p->p_stats->p_cru;
    140 		break;
    141 
    142 	default:
    143 		return (EINVAL);
    144 	}
    145 	netbsd32_from_rusage(rup, &ru);
    146 	return (copyout(&ru, (caddr_t)NETBSD32PTR64(SCARG(uap, rusage)),
    147 	    sizeof(ru)));
    148 }
    149