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 #include <stdlib.h> 28 #include <unistd.h> 29 #include <errno.h> 30 #include <sys/mman.h> 31 #include "libproc.h" 32 33 /* 34 * mmap() system call -- executed by subject process 35 */ 36 void * 37 pr_mmap(struct ps_prochandle *Pr, 38 void *addr, size_t len, int prot, int flags, int fd, off_t off) 39 { 40 sysret_t rval; /* return value from mmap() */ 41 argdes_t argd[6]; /* arg descriptors for mmap() */ 42 argdes_t *adp; 43 int error; 44 45 if (Pr == NULL) /* no subject process */ 46 return (mmap(addr, len, prot, flags, fd, off)); 47 48 adp = &argd[0]; /* addr argument */ 49 adp->arg_value = (long)addr; 50 adp->arg_object = NULL; 51 adp->arg_type = AT_BYVAL; 52 adp->arg_inout = AI_INPUT; 53 adp->arg_size = 0; 54 55 adp++; /* len argument */ 56 adp->arg_value = (long)len; 57 adp->arg_object = NULL; 58 adp->arg_type = AT_BYVAL; 59 adp->arg_inout = AI_INPUT; 60 adp->arg_size = 0; 61 62 adp++; /* prot argument */ 63 adp->arg_value = (long)prot; 64 adp->arg_object = NULL; 65 adp->arg_type = AT_BYVAL; 66 adp->arg_inout = AI_INPUT; 67 adp->arg_size = 0; 68 69 adp++; /* flags argument */ 70 adp->arg_value = (long)(_MAP_NEW|flags); 71 adp->arg_object = NULL; 72 adp->arg_type = AT_BYVAL; 73 adp->arg_inout = AI_INPUT; 74 adp->arg_size = 0; 75 76 adp++; /* fd argument */ 77 adp->arg_value = (long)fd; 78 adp->arg_object = NULL; 79 adp->arg_type = AT_BYVAL; 80 adp->arg_inout = AI_INPUT; 81 adp->arg_size = 0; 82 83 adp++; /* off argument */ 84 adp->arg_value = (long)off; 85 adp->arg_object = NULL; 86 adp->arg_type = AT_BYVAL; 87 adp->arg_inout = AI_INPUT; 88 adp->arg_size = 0; 89 90 error = Psyscall(Pr, &rval, SYS_mmap, 6, &argd[0]); 91 92 if (error) { 93 errno = (error > 0)? error : ENOSYS; 94 return ((void *)(-1)); 95 } 96 return ((void *)rval.sys_rval1); 97 } 98 99 /* 100 * munmap() system call -- executed by subject process 101 */ 102 int 103 pr_munmap(struct ps_prochandle *Pr, void *addr, size_t len) 104 { 105 sysret_t rval; /* return value from munmap() */ 106 argdes_t argd[2]; /* arg descriptors for munmap() */ 107 argdes_t *adp; 108 int error; 109 110 if (Pr == NULL) /* no subject process */ 111 return (munmap(addr, len)); 112 113 adp = &argd[0]; /* addr argument */ 114 adp->arg_value = (long)addr; 115 adp->arg_object = NULL; 116 adp->arg_type = AT_BYVAL; 117 adp->arg_inout = AI_INPUT; 118 adp->arg_size = 0; 119 120 adp++; /* len argument */ 121 adp->arg_value = (long)len; 122 adp->arg_object = NULL; 123 adp->arg_type = AT_BYVAL; 124 adp->arg_inout = AI_INPUT; 125 adp->arg_size = 0; 126 127 error = Psyscall(Pr, &rval, SYS_munmap, 2, &argd[0]); 128 129 if (error) { 130 errno = (error > 0)? error : ENOSYS; 131 return (-1); 132 } 133 return (rval.sys_rval1); 134 } 135 136 /* 137 * zmap() -- convenience function; mmap(MAP_ANON) executed by subject process. 138 */ 139 void * 140 pr_zmap(struct ps_prochandle *Pr, void *addr, size_t len, int prot, int flags) 141 { 142 return (pr_mmap(Pr, addr, len, prot, flags | MAP_ANON, -1, (off_t)0)); 143 } 144