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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License (the "License").
      6  * You may not use this file except in compliance with the License.
      7  *
      8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
      9  * or http://www.opensolaris.org/os/licensing.
     10  * See the License for the specific language governing permissions
     11  * and limitations under the License.
     12  *
     13  * When distributing Covered Code, include this CDDL HEADER in each
     14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     15  * If applicable, add the following below this CDDL HEADER, with the
     16  * fields enclosed by brackets "[]" replaced with your own identifying
     17  * information: Portions Copyright [yyyy] [name of copyright owner]
     18  *
     19  * CDDL HEADER END
     20  */
     21 
     22 /*
     23  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
     24  * Use is subject to license terms.
     25  */
     26 
     27 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     28 
     29 #include <sys/isa_defs.h>
     30 
     31 #include <stdlib.h>
     32 #include <unistd.h>
     33 #include <string.h>
     34 #include <errno.h>
     35 #include <sys/types.h>
     36 #include <sys/wait.h>
     37 
     38 #include "P32ton.h"
     39 #include "libproc.h"
     40 
     41 /*
     42  * waitid() system call -- executed by subject process
     43  */
     44 int
     45 pr_waitid(struct ps_prochandle *Pr,
     46     idtype_t idtype, id_t id, siginfo_t *infop, int options)
     47 {
     48 	sysret_t rval;			/* return value from waitid() */
     49 	argdes_t argd[4];		/* arg descriptors for waitid() */
     50 	argdes_t *adp;
     51 	int error;
     52 #ifdef _LP64
     53 	siginfo32_t siginfo32;
     54 #endif	/* _LP64 */
     55 
     56 	if (Pr == NULL)		/* no subject process */
     57 		return (waitid(idtype, id, infop, options));
     58 
     59 	adp = &argd[0];		/* idtype argument */
     60 	adp->arg_value = idtype;
     61 	adp->arg_object = NULL;
     62 	adp->arg_type = AT_BYVAL;
     63 	adp->arg_inout = AI_INPUT;
     64 	adp->arg_size = 0;
     65 
     66 	adp++;			/* id argument */
     67 	adp->arg_value = id;
     68 	adp->arg_object = NULL;
     69 	adp->arg_type = AT_BYVAL;
     70 	adp->arg_inout = AI_INPUT;
     71 	adp->arg_size = 0;
     72 
     73 	adp++;			/* infop argument */
     74 	adp->arg_value = 0;
     75 	adp->arg_type = AT_BYREF;
     76 	adp->arg_inout = AI_OUTPUT;
     77 #ifdef _LP64
     78 	if (Pstatus(Pr)->pr_dmodel == PR_MODEL_ILP32) {
     79 		adp->arg_object = &siginfo32;
     80 		adp->arg_size = sizeof (siginfo32);
     81 	} else {
     82 		adp->arg_object = infop;
     83 		adp->arg_size = sizeof (*infop);
     84 	}
     85 #else	/* _LP64 */
     86 	adp->arg_object = infop;
     87 	adp->arg_size = sizeof (*infop);
     88 #endif	/* _LP64 */
     89 
     90 	adp++;			/* options argument */
     91 	adp->arg_value = options;
     92 	adp->arg_object = NULL;
     93 	adp->arg_type = AT_BYVAL;
     94 	adp->arg_inout = AI_INPUT;
     95 	adp->arg_size = 0;
     96 
     97 	error = Psyscall(Pr, &rval, SYS_waitid, 4, &argd[0]);
     98 
     99 	if (error) {
    100 		errno = (error > 0)? error : ENOSYS;
    101 		return (-1);
    102 	}
    103 #ifdef _LP64
    104 	if (Pstatus(Pr)->pr_dmodel == PR_MODEL_ILP32)
    105 		siginfo_32_to_n(&siginfo32, infop);
    106 #endif	/* _LP64 */
    107 	return (0);
    108 }
    109