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) 1997-2001 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 <string.h> 32 #include <fcntl.h> 33 #include <errno.h> 34 #include "libproc.h" 35 36 /* 37 * open() system call -- executed by subject process. 38 */ 39 int 40 pr_open(struct ps_prochandle *Pr, const char *filename, int flags, mode_t mode) 41 { 42 sysret_t rval; /* return value from open() */ 43 argdes_t argd[3]; /* arg descriptors for open() */ 44 argdes_t *adp; 45 int error; 46 47 if (Pr == NULL) /* no subject process */ 48 return (open(filename, flags, mode)); 49 50 adp = &argd[0]; /* filename argument */ 51 adp->arg_value = 0; 52 adp->arg_object = (void *)filename; 53 adp->arg_type = AT_BYREF; 54 adp->arg_inout = AI_INPUT; 55 adp->arg_size = strlen(filename)+1; 56 57 adp++; /* flags argument */ 58 adp->arg_value = (long)flags; 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++; /* mode argument */ 65 adp->arg_value = (long)mode; 66 adp->arg_object = NULL; 67 adp->arg_type = AT_BYVAL; 68 adp->arg_inout = AI_INPUT; 69 adp->arg_size = 0; 70 71 error = Psyscall(Pr, &rval, SYS_open, 3, &argd[0]); 72 73 if (error) { 74 errno = (error > 0)? error : ENOSYS; 75 return (-1); 76 } 77 return (rval.sys_rval1); 78 } 79 80 /* 81 * creat() system call -- executed by subject process. 82 */ 83 int 84 pr_creat(struct ps_prochandle *Pr, const char *filename, mode_t mode) 85 { 86 sysret_t rval; /* return value from creat() */ 87 argdes_t argd[2]; /* arg descriptors for creat() */ 88 argdes_t *adp; 89 int error; 90 91 if (Pr == NULL) /* no subject process */ 92 return (creat(filename, mode)); 93 94 adp = &argd[0]; /* filename argument */ 95 adp->arg_value = 0; 96 adp->arg_object = (void *)filename; 97 adp->arg_type = AT_BYREF; 98 adp->arg_inout = AI_INPUT; 99 adp->arg_size = strlen(filename)+1; 100 101 adp++; /* mode argument */ 102 adp->arg_value = (long)mode; 103 adp->arg_object = NULL; 104 adp->arg_type = AT_BYVAL; 105 adp->arg_inout = AI_INPUT; 106 adp->arg_size = 0; 107 108 error = Psyscall(Pr, &rval, SYS_creat, 2, &argd[0]); 109 110 if (error) { 111 errno = (error > 0)? error : ENOSYS; 112 return (-1); 113 } 114 return (rval.sys_rval1); 115 } 116 117 /* 118 * close() system call -- executed by subject process. 119 */ 120 int 121 pr_close(struct ps_prochandle *Pr, int fd) 122 { 123 sysret_t rval; /* return value from close() */ 124 argdes_t argd[1]; /* arg descriptors for close() */ 125 argdes_t *adp; 126 int error; 127 128 if (Pr == NULL) /* no subject process */ 129 return (close(fd)); 130 131 adp = &argd[0]; /* fd argument */ 132 adp->arg_value = (int)fd; 133 adp->arg_object = NULL; 134 adp->arg_type = AT_BYVAL; 135 adp->arg_inout = AI_INPUT; 136 adp->arg_size = 0; 137 138 error = Psyscall(Pr, &rval, SYS_close, 1, &argd[0]); 139 140 if (error) { 141 errno = (error > 0)? error : ENOSYS; 142 return (-1); 143 } 144 return (rval.sys_rval1); 145 } 146 147 /* 148 * access() system call -- executed by subject process. 149 */ 150 int 151 pr_access(struct ps_prochandle *Pr, const char *path, int amode) 152 { 153 sysret_t rval; /* return from access() */ 154 argdes_t argd[2]; /* arg descriptors for access() */ 155 argdes_t *adp; 156 int err; 157 158 if (Pr == NULL) /* no subject process */ 159 return (access(path, amode)); 160 161 adp = &argd[0]; /* path argument */ 162 adp->arg_value = 0; 163 adp->arg_object = (void *)path; 164 adp->arg_type = AT_BYREF; 165 adp->arg_inout = AI_INPUT; 166 adp->arg_size = strlen(path) + 1; 167 168 adp++; /* amode argument */ 169 adp->arg_value = (long)amode; 170 adp->arg_object = NULL; 171 adp->arg_type = AT_BYVAL; 172 adp->arg_inout = AI_INPUT; 173 adp->arg_size = 0; 174 175 err = Psyscall(Pr, &rval, SYS_access, 2, &argd[0]); 176 177 if (err) { 178 errno = (err > 0) ? err : ENOSYS; 179 return (-1); 180 } 181 182 return (rval.sys_rval1); 183 } 184