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
get_sock_peer_name(struct ps_prochandle * Pr,int syscall,int sock,struct sockaddr * name,socklen_t * namelen)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
pr_getsockname(struct ps_prochandle * Pr,int sock,struct sockaddr * name,socklen_t * namelen)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
pr_getpeername(struct ps_prochandle * Pr,int sock,struct sockaddr * name,socklen_t * namelen)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
pr_getsockopt(struct ps_prochandle * Pr,int sock,int level,int optname,void * optval,int * optlen)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