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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright (c) 1998-2001 by Sun Microsystems, Inc. 24 * All rights reserved. 25 */ 26 27 #include <stdlib.h> 28 #include <unistd.h> 29 #include <errno.h> 30 #include <sys/types.h> 31 #include <sys/mman.h> 32 #include "libproc.h" 33 34 /* 35 * memcntl() system call -- executed by subject process 36 */ 37 38 int 39 pr_memcntl(struct ps_prochandle *Pr, 40 caddr_t addr, size_t len, int cmd, caddr_t arg, int attr, int mask) 41 { 42 sysret_t rval; /* return value from memcntl() */ 43 argdes_t argd[6]; /* arg descriptors for memcntl() */ 44 argdes_t *adp; 45 int error; 46 47 if (Pr == NULL) /* no subject process */ 48 return (memcntl(addr, len, cmd, arg, attr, mask)); 49 50 adp = &argd[0]; /* addr argument */ 51 adp->arg_value = (uintptr_t)addr; 52 adp->arg_object = NULL; 53 adp->arg_type = AT_BYVAL; 54 adp->arg_inout = AI_INPUT; 55 adp->arg_size = 0; 56 57 adp++; /* len argument */ 58 adp->arg_value = len; 59 adp->arg_object = NULL; 60 adp->arg_type = AT_BYVAL; 61 adp->arg_inout = AI_INPUT; 62 adp->arg_size = 0; 63 64 adp++; /* cmd argument */ 65 adp->arg_value = cmd; 66 adp->arg_object = NULL; 67 adp->arg_type = AT_BYVAL; 68 adp->arg_inout = AI_INPUT; 69 adp->arg_size = 0; 70 71 adp++; /* arg argument */ 72 if (cmd == MC_HAT_ADVISE) { 73 adp->arg_value = 0; 74 adp->arg_object = arg; 75 adp->arg_type = AT_BYREF; 76 adp->arg_inout = AI_INPUT; 77 #ifdef _LP64 78 if (Pstatus(Pr)->pr_dmodel == PR_MODEL_ILP32) 79 adp->arg_size = sizeof (struct memcntl_mha32); 80 else 81 adp->arg_size = sizeof (struct memcntl_mha); 82 #else 83 adp->arg_size = sizeof (struct memcntl_mha); 84 #endif 85 } else { 86 adp->arg_value = (uintptr_t)arg; 87 adp->arg_object = NULL; 88 adp->arg_type = AT_BYVAL; 89 adp->arg_inout = AI_INPUT; 90 adp->arg_size = 0; 91 } 92 93 adp++; /* attr argument */ 94 adp->arg_value = attr; 95 adp->arg_object = NULL; 96 adp->arg_type = AT_BYVAL; 97 adp->arg_inout = AI_INPUT; 98 adp->arg_size = 0; 99 100 adp++; /* mask argument */ 101 adp->arg_value = mask; 102 adp->arg_object = NULL; 103 adp->arg_type = AT_BYVAL; 104 adp->arg_inout = AI_INPUT; 105 adp->arg_size = 0; 106 107 error = Psyscall(Pr, &rval, SYS_memcntl, 6, &argd[0]); 108 109 if (error) { 110 errno = (error > 0)? error : ENOSYS; 111 return (-1); 112 } 113 return (0); 114 } 115