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 1998-2003 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 <stdlib.h> 30 #include <unistd.h> 31 #include <errno.h> 32 #include <sys/types.h> 33 #include <sys/stream.h> 34 #include <sys/socket.h> 35 #include <sys/socketvar.h> 36 #include "libproc.h" 37 38 static int 39 get_sock_peer_name(struct ps_prochandle *Pr, 40 int syscall, int sock, struct sockaddr *name, socklen_t *namelen) 41 { 42 sysret_t rval; /* return value from get{sock|peer}name() */ 43 argdes_t argd[4]; /* arg descriptors for get{sock|peer}name() */ 44 argdes_t *adp; 45 int error; 46 47 adp = &argd[0]; /* sock argument */ 48 adp->arg_value = sock; 49 adp->arg_object = NULL; 50 adp->arg_type = AT_BYVAL; 51 adp->arg_inout = AI_INPUT; 52 adp->arg_size = 0; 53 54 adp++; /* name argument */ 55 adp->arg_value = 0; 56 adp->arg_object = name; 57 adp->arg_type = AT_BYREF; 58 adp->arg_inout = AI_OUTPUT; 59 adp->arg_size = *namelen; 60 61 adp++; /* namelen argument */ 62 adp->arg_value = 0; 63 adp->arg_object = namelen; 64 adp->arg_type = AT_BYREF; 65 adp->arg_inout = AI_INOUT; 66 adp->arg_size = sizeof (*namelen); 67 68 adp++; /* version argument */ 69 adp->arg_value = SOV_DEFAULT; 70 adp->arg_object = NULL; 71 adp->arg_type = AT_BYVAL; 72 adp->arg_inout = AI_INPUT; 73 adp->arg_size = 0; 74 75 error = Psyscall(Pr, &rval, syscall, 4, &argd[0]); 76 77 if (error) { 78 errno = (error > 0)? error : ENOSYS; 79 return (-1); 80 } 81 return (0); 82 } 83 84 /* libc system call interface */ 85 extern int _so_getsockname(int, struct sockaddr *, socklen_t *, int); 86 extern int _so_getpeername(int, struct sockaddr *, socklen_t *, int); 87 extern int _so_getsockopt(int, int, int, void *, int *); 88 89 /* 90 * getsockname() system call -- executed by subject process 91 */ 92 int 93 pr_getsockname(struct ps_prochandle *Pr, 94 int sock, struct sockaddr *name, socklen_t *namelen) 95 { 96 if (Pr == NULL) /* no subject process */ 97 return (_so_getsockname(sock, name, namelen, SOV_DEFAULT)); 98 99 return (get_sock_peer_name(Pr, SYS_getsockname, sock, name, namelen)); 100 } 101 102 /* 103 * getpeername() system call -- executed by subject process 104 */ 105 int 106 pr_getpeername(struct ps_prochandle *Pr, 107 int sock, struct sockaddr *name, socklen_t *namelen) 108 { 109 if (Pr == NULL) /* no subject process */ 110 return (_so_getpeername(sock, name, namelen, SOV_DEFAULT)); 111 112 return (get_sock_peer_name(Pr, SYS_getpeername, sock, name, namelen)); 113 } 114 115 int 116 pr_getsockopt(struct ps_prochandle *Pr, 117 int sock, int level, int optname, void *optval, int *optlen) 118 { 119 sysret_t rval; /* return value from getsockopt() */ 120 argdes_t argd[5]; /* arg descriptors for getsockopt() */ 121 argdes_t *adp; 122 int error; 123 124 if (Pr == NULL) /* no subject process */ 125 return (_so_getsockopt(sock, level, optname, optval, optlen)); 126 127 adp = &argd[0]; /* sock argument */ 128 adp->arg_value = sock; 129 adp->arg_object = NULL; 130 adp->arg_type = AT_BYVAL; 131 adp->arg_inout = AI_INPUT; 132 adp->arg_size = 0; 133 134 adp++; /* level argument */ 135 adp->arg_value = level; 136 adp->arg_object = NULL; 137 adp->arg_type = AT_BYVAL; 138 adp->arg_inout = AI_INPUT; 139 adp->arg_size = 0; 140 141 adp++; /* optname argument */ 142 adp->arg_value = optname; 143 adp->arg_object = NULL; 144 adp->arg_type = AT_BYVAL; 145 adp->arg_inout = AI_INPUT; 146 adp->arg_size = 0; 147 148 adp++; /* optval argument */ 149 adp->arg_value = 0; 150 adp->arg_object = optval; 151 adp->arg_type = AT_BYREF; 152 adp->arg_inout = AI_OUTPUT; 153 adp->arg_size = optlen == NULL ? 0 : *optlen; 154 155 adp++; /* optlen argument */ 156 adp->arg_value = 0; 157 adp->arg_object = optlen; 158 adp->arg_type = AT_BYREF; 159 adp->arg_inout = AI_INOUT; 160 adp->arg_size = sizeof (*optlen); 161 162 error = Psyscall(Pr, &rval, SYS_getsockopt, 5, &argd[0]); 163 164 if (error) { 165 errno = (error > 0)? error : ENOSYS; 166 return (-1); 167 } 168 return (0); 169 } 170