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) 1997-2000 by Sun Microsystems, Inc. 24 * All rights reserved. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #include <stdlib.h> 30 #include <unistd.h> 31 #include <errno.h> 32 #include <sys/mman.h> 33 #include "libproc.h" 34 35 /* 36 * mmap() system call -- executed by subject process 37 */ 38 void * 39 pr_mmap(struct ps_prochandle *Pr, 40 void *addr, size_t len, int prot, int flags, int fd, off_t off) 41 { 42 sysret_t rval; /* return value from mmap() */ 43 argdes_t argd[6]; /* arg descriptors for mmap() */ 44 argdes_t *adp; 45 int error; 46 47 if (Pr == NULL) /* no subject process */ 48 return (mmap(addr, len, prot, flags, fd, off)); 49 50 adp = &argd[0]; /* addr argument */ 51 adp->arg_value = (long)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 = (long)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++; /* prot argument */ 65 adp->arg_value = (long)prot; 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++; /* flags argument */ 72 adp->arg_value = (long)(_MAP_NEW|flags); 73 adp->arg_object = NULL; 74 adp->arg_type = AT_BYVAL; 75 adp->arg_inout = AI_INPUT; 76 adp->arg_size = 0; 77 78 adp++; /* fd argument */ 79 adp->arg_value = (long)fd; 80 adp->arg_object = NULL; 81 adp->arg_type = AT_BYVAL; 82 adp->arg_inout = AI_INPUT; 83 adp->arg_size = 0; 84 85 adp++; /* off argument */ 86 adp->arg_value = (long)off; 87 adp->arg_object = NULL; 88 adp->arg_type = AT_BYVAL; 89 adp->arg_inout = AI_INPUT; 90 adp->arg_size = 0; 91 92 error = Psyscall(Pr, &rval, SYS_mmap, 6, &argd[0]); 93 94 if (error) { 95 errno = (error > 0)? error : ENOSYS; 96 return ((void *)(-1)); 97 } 98 return ((void *)rval.sys_rval1); 99 } 100 101 /* 102 * munmap() system call -- executed by subject process 103 */ 104 int 105 pr_munmap(struct ps_prochandle *Pr, void *addr, size_t len) 106 { 107 sysret_t rval; /* return value from munmap() */ 108 argdes_t argd[2]; /* arg descriptors for munmap() */ 109 argdes_t *adp; 110 int error; 111 112 if (Pr == NULL) /* no subject process */ 113 return (munmap(addr, len)); 114 115 adp = &argd[0]; /* addr argument */ 116 adp->arg_value = (long)addr; 117 adp->arg_object = NULL; 118 adp->arg_type = AT_BYVAL; 119 adp->arg_inout = AI_INPUT; 120 adp->arg_size = 0; 121 122 adp++; /* len argument */ 123 adp->arg_value = (long)len; 124 adp->arg_object = NULL; 125 adp->arg_type = AT_BYVAL; 126 adp->arg_inout = AI_INPUT; 127 adp->arg_size = 0; 128 129 error = Psyscall(Pr, &rval, SYS_munmap, 2, &argd[0]); 130 131 if (error) { 132 errno = (error > 0)? error : ENOSYS; 133 return (-1); 134 } 135 return (rval.sys_rval1); 136 } 137 138 /* 139 * zmap() -- convenience function; mmap(MAP_ANON) executed by subject process. 140 */ 141 void * 142 pr_zmap(struct ps_prochandle *Pr, void *addr, size_t len, int prot, int flags) 143 { 144 return (pr_mmap(Pr, addr, len, prot, flags | MAP_ANON, -1, (off_t)0)); 145 } 146