/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright (c) 1995, 2010, Oracle and/or its affiliates. All rights reserved. */ /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ /* All Rights Reserved */ /* * Portions of this source code were derived from Berkeley 4.3 BSD * under license from the Regents of the University of California. */ #include <sys/types.h> #include <sys/socket.h> #include <sys/stat.h> #include <netinet/in.h> #include <errno.h> #include <unistd.h> #include <stdlib.h> #include <string.h> /* * XXX The functions in this file are only needed to support transport * providers that have not yet been converted to use /etc/sock2path.d. * Once all transport providers have been converted this file can be * removed. */ static struct netconfig *_s_match_netconf(int family, int type, int proto, void **nethandle); /* * The following two string arrays map a number as specified * by a user of sockets, to the string as would be returned * by a call to getnetconfig(). * * They are used by _s_match_netconf(); * * proto_sw contains protocol entries for which there is a corresponding * /dev device. All others would presumably use raw IP and download the * desired protocol. */ static char *proto_sw[] = { "", "icmp", /* 1 = ICMP */ "", "", "", "", "tcp", /* 6 = TCP */ "", "", "", "", "", "", "", "", "", "", "udp", /* 17 = UDP */ }; static char *family_sw[] = { "-", /* 0 = AF_UNSPEC */ "loopback", /* 1 = AF_UNIX */ "inet", /* 2 = AF_INET */ "implink", /* 3 = AF_IMPLINK */ "pup", /* 4 = AF_PUP */ "chaos", /* 5 = AF_CHAOS */ "ns", /* 6 = AF_NS */ "nbs", /* 7 = AF_NBS */ "ecma", /* 8 = AF_ECMA */ "datakit", /* 9 = AF_DATAKIT */ "ccitt", /* 10 = AF_CCITT */ "sna", /* 11 = AF_SNA */ "decnet", /* 12 = AF_DECnet */ "dli", /* 13 = AF_DLI */ "lat", /* 14 = AF_LAT */ "hylink", /* 15 = AF_HYLINK */ "appletalk", /* 16 = AF_APPLETALK */ "nit", /* 17 = AF_NIT */ "ieee802", /* 18 = AF_802 */ "osi", /* 19 = AF_OSI */ "x25", /* 20 = AF_X25 */ "osinet", /* 21 = AF_OSINET */ "gosip", /* 22 = AF_GOSIP */ "ipx", /* 23 = AF_IPX */ "route", /* 24 = AF_ROUTE */ "link", /* 25 = AF_LINK */ "inet6", /* 26 = AF_INET6 */ "key", /* 27 = AF_KEY */ }; /* * Lookup family/type/protocol in /etc/netconfig. * Returns the pathname and a prototype value (to be passed into SO_PROTOTYPE) * The path is malloc'ed and has to be freed by the caller. */ int _s_netconfig_path(int family, int type, int protocol, char **pathp, int *prototype) { struct netconfig *net; void *nethandle; struct stat stats; net = _s_match_netconf(family, type, protocol, &nethandle); if (net == NULL) return (-1); if (strcmp(net->nc_proto, NC_NOPROTO) != 0) *prototype = 0; else *prototype = protocol; retry: if (stat(net->nc_device, &stats) < 0) { switch (errno) { case EINTR: goto retry; case ENOENT: case ENOLINK: case ELOOP: case EMULTIHOP: case ENOTDIR: errno = EPFNOSUPPORT; break; } endnetconfig(nethandle); /* finished with netconfig struct */ return (-1); } if (!S_ISCHR(stats.st_mode)) { errno = EPFNOSUPPORT; endnetconfig(nethandle); /* finished with netconfig struct */ return (-1); } *pathp = malloc(strlen(net->nc_device) + 1); if (*pathp == NULL) { endnetconfig(nethandle); errno = ENOMEM; return (-1); } (void) strcpy(*pathp, net->nc_device); endnetconfig(nethandle); /* finished with netconfig struct */ return (0); } /* * Match config entry for protocol * requested. */ static struct netconfig * _s_match_netconf(int family, int type, int proto, void **nethandle) { struct netconfig *net; struct netconfig *maybe; char *oproto; if (family < 0 || family >= (int)sizeof (family_sw) / (int)sizeof (char *) || proto < 0 || proto >= IPPROTO_MAX) { errno = EPROTONOSUPPORT; return (NULL); } if (proto) { if (proto >= (int)sizeof (proto_sw) / (int)sizeof (char *)) oproto = ""; else oproto = proto_sw[proto]; } /* * Loop through each entry in netconfig * until one matches or we reach the end. */ if ((*nethandle = setnetconfig()) == NULL) { return (NULL); } maybe = NULL; while ((net = getnetconfig(*nethandle)) != NULL) { /* * We make a copy of net->nc_semantics rather than modifying * it in place because the network selection code shares the * structures returned by getnetconfig() among all its callers. * See bug #1160886 for more details. */ unsigned int semantics = net->nc_semantics; if (semantics == NC_TPI_COTS_ORD) semantics = NC_TPI_COTS; if (proto) { if (strcmp(net->nc_protofmly, family_sw[family]) == 0 && semantics == type && strcmp(net->nc_proto, oproto) == 0) break; if (strcmp(net->nc_protofmly, family_sw[family]) == 0 && type == SOCK_RAW && semantics == SOCK_RAW && strcmp(net->nc_proto, NC_NOPROTO) == 0 && maybe == NULL) maybe = net; /* in case no exact match */ continue; } else { if (strcmp(net->nc_protofmly, family_sw[family]) == 0 && semantics == type) { break; } } } if (net == NULL && maybe) net = maybe; if (net == NULL) { endnetconfig(*nethandle); errno = EPROTONOSUPPORT; return (NULL); } return (net); }
