Home | History | Annotate | Download | only in common
      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