16e91bba0SGirish Moodalbail /*
26e91bba0SGirish Moodalbail  * CDDL HEADER START
36e91bba0SGirish Moodalbail  *
46e91bba0SGirish Moodalbail  * The contents of this file are subject to the terms of the
56e91bba0SGirish Moodalbail  * Common Development and Distribution License (the "License").
66e91bba0SGirish Moodalbail  * You may not use this file except in compliance with the License.
76e91bba0SGirish Moodalbail  *
86e91bba0SGirish Moodalbail  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
96e91bba0SGirish Moodalbail  * or http://www.opensolaris.org/os/licensing.
106e91bba0SGirish Moodalbail  * See the License for the specific language governing permissions
116e91bba0SGirish Moodalbail  * and limitations under the License.
126e91bba0SGirish Moodalbail  *
136e91bba0SGirish Moodalbail  * When distributing Covered Code, include this CDDL HEADER in each
146e91bba0SGirish Moodalbail  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
156e91bba0SGirish Moodalbail  * If applicable, add the following below this CDDL HEADER, with the
166e91bba0SGirish Moodalbail  * fields enclosed by brackets "[]" replaced with your own identifying
176e91bba0SGirish Moodalbail  * information: Portions Copyright [yyyy] [name of copyright owner]
186e91bba0SGirish Moodalbail  *
196e91bba0SGirish Moodalbail  * CDDL HEADER END
206e91bba0SGirish Moodalbail  */
21ad69a334SYuri Pankov 
226e91bba0SGirish Moodalbail /*
23f6da83d4SAnurag S. Maskey  * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
24b31320a7SChris Fraire  * Copyright (c) 2016, Chris Fraire <cfraire@me.com>.
25a73be61aSHans Rosenfeld  * Copyright 2021 Tintri by DDN, Inc. All rights reserved.
266e91bba0SGirish Moodalbail  */
276e91bba0SGirish Moodalbail 
286e91bba0SGirish Moodalbail #include <stdio.h>
296e91bba0SGirish Moodalbail #include <stdlib.h>
306e91bba0SGirish Moodalbail #include <string.h>
316e91bba0SGirish Moodalbail #include <errno.h>
326e91bba0SGirish Moodalbail #include <fcntl.h>
336e91bba0SGirish Moodalbail #include <unistd.h>
346e91bba0SGirish Moodalbail #include <stropts.h>
356e91bba0SGirish Moodalbail #include <sys/sockio.h>
366e91bba0SGirish Moodalbail #include <sys/types.h>
376e91bba0SGirish Moodalbail #include <sys/stat.h>
386e91bba0SGirish Moodalbail #include <sys/socket.h>
396e91bba0SGirish Moodalbail #include <net/route.h>
406e91bba0SGirish Moodalbail #include <netinet/in.h>
416e91bba0SGirish Moodalbail #include <inet/ip.h>
426e91bba0SGirish Moodalbail #include <arpa/inet.h>
436e91bba0SGirish Moodalbail #include <libintl.h>
446e91bba0SGirish Moodalbail #include <libdlpi.h>
456e91bba0SGirish Moodalbail #include <libinetutil.h>
466e91bba0SGirish Moodalbail #include <libdladm.h>
476e91bba0SGirish Moodalbail #include <libdllink.h>
486e91bba0SGirish Moodalbail #include <libdliptun.h>
496e91bba0SGirish Moodalbail #include <strings.h>
506e91bba0SGirish Moodalbail #include <zone.h>
516e91bba0SGirish Moodalbail #include <ctype.h>
526e91bba0SGirish Moodalbail #include <limits.h>
536e91bba0SGirish Moodalbail #include <assert.h>
546e91bba0SGirish Moodalbail #include <netdb.h>
556e91bba0SGirish Moodalbail #include <pwd.h>
566e91bba0SGirish Moodalbail #include <auth_attr.h>
576e91bba0SGirish Moodalbail #include <secdb.h>
586e91bba0SGirish Moodalbail #include <nss_dbdefs.h>
596e91bba0SGirish Moodalbail #include "libipadm_impl.h"
606e91bba0SGirish Moodalbail 
616e91bba0SGirish Moodalbail /* error codes and text description */
626e91bba0SGirish Moodalbail static struct ipadm_error_info {
636e91bba0SGirish Moodalbail 	ipadm_status_t	error_code;
646e91bba0SGirish Moodalbail 	const char	*error_desc;
656e91bba0SGirish Moodalbail } ipadm_errors[] = {
666e91bba0SGirish Moodalbail 	{ IPADM_SUCCESS,	"Operation succeeded" },
676e91bba0SGirish Moodalbail 	{ IPADM_FAILURE,	"Operation failed" },
686e91bba0SGirish Moodalbail 	{ IPADM_EAUTH,		"Insufficient user authorizations" },
696e91bba0SGirish Moodalbail 	{ IPADM_EPERM,		"Permission denied" },
706e91bba0SGirish Moodalbail 	{ IPADM_NO_BUFS,	"No buffer space available" },
716e91bba0SGirish Moodalbail 	{ IPADM_NO_MEMORY,	"Insufficient memory" },
726e91bba0SGirish Moodalbail 	{ IPADM_BAD_ADDR,	"Invalid address" },
736e91bba0SGirish Moodalbail 	{ IPADM_BAD_PROTOCOL,	"Incorrect protocol family for operation" },
746e91bba0SGirish Moodalbail 	{ IPADM_DAD_FOUND,	"Duplicate address detected" },
756e91bba0SGirish Moodalbail 	{ IPADM_EXISTS,		"Already exists" },
766e91bba0SGirish Moodalbail 	{ IPADM_IF_EXISTS,	"Interface already exists" },
776e91bba0SGirish Moodalbail 	{ IPADM_ADDROBJ_EXISTS, "Address object already exists" },
786e91bba0SGirish Moodalbail 	{ IPADM_ADDRCONF_EXISTS, "Addrconf already in progress" },
796e91bba0SGirish Moodalbail 	{ IPADM_ENXIO,		"Interface does not exist" },
806e91bba0SGirish Moodalbail 	{ IPADM_GRP_NOTEMPTY,	"IPMP group is not empty" },
816e91bba0SGirish Moodalbail 	{ IPADM_INVALID_ARG,	"Invalid argument provided" },
826e91bba0SGirish Moodalbail 	{ IPADM_INVALID_NAME,	"Invalid name" },
836e91bba0SGirish Moodalbail 	{ IPADM_DLPI_FAILURE,	"Could not open DLPI link" },
846e91bba0SGirish Moodalbail 	{ IPADM_DLADM_FAILURE,	"Datalink does not exist" },
856e91bba0SGirish Moodalbail 	{ IPADM_PROP_UNKNOWN,   "Unknown property" },
866e91bba0SGirish Moodalbail 	{ IPADM_ERANGE,		"Value is outside the allowed range" },
876e91bba0SGirish Moodalbail 	{ IPADM_ESRCH,		"Value does not exist" },
886e91bba0SGirish Moodalbail 	{ IPADM_EOVERFLOW,	"Number of values exceeds the allowed limit" },
896e91bba0SGirish Moodalbail 	{ IPADM_NOTFOUND,	"Object not found" },
906e91bba0SGirish Moodalbail 	{ IPADM_IF_INUSE,	"Interface already in use" },
916e91bba0SGirish Moodalbail 	{ IPADM_ADDR_INUSE,	"Address already in use" },
926e91bba0SGirish Moodalbail 	{ IPADM_BAD_HOSTNAME,	"Hostname maps to multiple IP addresses" },
936e91bba0SGirish Moodalbail 	{ IPADM_ADDR_NOTAVAIL,	"Can't assign requested address" },
946e91bba0SGirish Moodalbail 	{ IPADM_ALL_ADDRS_NOT_ENABLED, "All addresses could not be enabled" },
956e91bba0SGirish Moodalbail 	{ IPADM_NDPD_NOT_RUNNING, "IPv6 autoconf daemon in.ndpd not running" },
966e91bba0SGirish Moodalbail 	{ IPADM_DHCP_START_ERROR, "Could not start dhcpagent" },
976e91bba0SGirish Moodalbail 	{ IPADM_DHCP_IPC_ERROR,	"Could not communicate with dhcpagent" },
986e91bba0SGirish Moodalbail 	{ IPADM_DHCP_IPC_TIMEOUT, "Communication with dhcpagent timed out" },
996e91bba0SGirish Moodalbail 	{ IPADM_TEMPORARY_OBJ,	"Persistent operation on temporary object" },
1006e91bba0SGirish Moodalbail 	{ IPADM_IPC_ERROR,	"Could not communicate with ipmgmtd" },
1016e91bba0SGirish Moodalbail 	{ IPADM_NOTSUP,		"Operation not supported" },
1026e91bba0SGirish Moodalbail 	{ IPADM_OP_DISABLE_OBJ, "Operation not supported on disabled object" },
103550b6e40SSowmini Varadhan 	{ IPADM_EBADE,		"Invalid data exchange with daemon" },
104550b6e40SSowmini Varadhan 	{ IPADM_GZ_PERM,	"Operation not permitted on from-gz interface"}
1056e91bba0SGirish Moodalbail };
1066e91bba0SGirish Moodalbail 
1076e91bba0SGirish Moodalbail #define	IPADM_NUM_ERRORS	(sizeof (ipadm_errors) / sizeof (*ipadm_errors))
1086e91bba0SGirish Moodalbail 
1096e91bba0SGirish Moodalbail ipadm_status_t
ipadm_errno2status(int error)1106e91bba0SGirish Moodalbail ipadm_errno2status(int error)
1116e91bba0SGirish Moodalbail {
1126e91bba0SGirish Moodalbail 	switch (error) {
1136e91bba0SGirish Moodalbail 	case 0:
1146e91bba0SGirish Moodalbail 		return (IPADM_SUCCESS);
1156e91bba0SGirish Moodalbail 	case ENXIO:
1166e91bba0SGirish Moodalbail 		return (IPADM_ENXIO);
1176e91bba0SGirish Moodalbail 	case ENOMEM:
1186e91bba0SGirish Moodalbail 		return (IPADM_NO_MEMORY);
1196e91bba0SGirish Moodalbail 	case ENOBUFS:
1206e91bba0SGirish Moodalbail 		return (IPADM_NO_BUFS);
1216e91bba0SGirish Moodalbail 	case EINVAL:
1226e91bba0SGirish Moodalbail 		return (IPADM_INVALID_ARG);
1236e91bba0SGirish Moodalbail 	case EBUSY:
1246e91bba0SGirish Moodalbail 		return (IPADM_IF_INUSE);
1256e91bba0SGirish Moodalbail 	case EEXIST:
1266e91bba0SGirish Moodalbail 		return (IPADM_EXISTS);
1276e91bba0SGirish Moodalbail 	case EADDRNOTAVAIL:
1286e91bba0SGirish Moodalbail 		return (IPADM_ADDR_NOTAVAIL);
1296e91bba0SGirish Moodalbail 	case EADDRINUSE:
1306e91bba0SGirish Moodalbail 		return (IPADM_ADDR_INUSE);
1316e91bba0SGirish Moodalbail 	case ENOENT:
1326e91bba0SGirish Moodalbail 		return (IPADM_NOTFOUND);
1336e91bba0SGirish Moodalbail 	case ERANGE:
1346e91bba0SGirish Moodalbail 		return (IPADM_ERANGE);
1356e91bba0SGirish Moodalbail 	case EPERM:
1366e91bba0SGirish Moodalbail 		return (IPADM_EPERM);
1376e91bba0SGirish Moodalbail 	case ENOTSUP:
1386e91bba0SGirish Moodalbail 	case EOPNOTSUPP:
1396e91bba0SGirish Moodalbail 		return (IPADM_NOTSUP);
1406e91bba0SGirish Moodalbail 	case EBADF:
1416e91bba0SGirish Moodalbail 		return (IPADM_IPC_ERROR);
1426e91bba0SGirish Moodalbail 	case EBADE:
1436e91bba0SGirish Moodalbail 		return (IPADM_EBADE);
1446e91bba0SGirish Moodalbail 	case ESRCH:
1456e91bba0SGirish Moodalbail 		return (IPADM_ESRCH);
1466e91bba0SGirish Moodalbail 	case EOVERFLOW:
1476e91bba0SGirish Moodalbail 		return (IPADM_EOVERFLOW);
1486e91bba0SGirish Moodalbail 	default:
1496e91bba0SGirish Moodalbail 		return (IPADM_FAILURE);
1506e91bba0SGirish Moodalbail 	}
1516e91bba0SGirish Moodalbail }
1526e91bba0SGirish Moodalbail 
1536e91bba0SGirish Moodalbail /*
1546e91bba0SGirish Moodalbail  * Returns a message string for the given libipadm error status.
1556e91bba0SGirish Moodalbail  */
1566e91bba0SGirish Moodalbail const char *
ipadm_status2str(ipadm_status_t status)1576e91bba0SGirish Moodalbail ipadm_status2str(ipadm_status_t status)
1586e91bba0SGirish Moodalbail {
1596e91bba0SGirish Moodalbail 	int	i;
1606e91bba0SGirish Moodalbail 
1616e91bba0SGirish Moodalbail 	for (i = 0; i < IPADM_NUM_ERRORS; i++) {
1626e91bba0SGirish Moodalbail 		if (status == ipadm_errors[i].error_code)
1636e91bba0SGirish Moodalbail 			return (dgettext(TEXT_DOMAIN,
1646e91bba0SGirish Moodalbail 			    ipadm_errors[i].error_desc));
1656e91bba0SGirish Moodalbail 	}
1666e91bba0SGirish Moodalbail 
1676e91bba0SGirish Moodalbail 	return (dgettext(TEXT_DOMAIN, "<unknown error>"));
1686e91bba0SGirish Moodalbail }
1696e91bba0SGirish Moodalbail 
1706e91bba0SGirish Moodalbail /*
1716e91bba0SGirish Moodalbail  * Opens a handle to libipadm.
1726e91bba0SGirish Moodalbail  * Possible values for flags:
1736e91bba0SGirish Moodalbail  *  IPH_VRRP:	Used by VRRP daemon to set the socket option SO_VRRP.
1746e91bba0SGirish Moodalbail  *  IPH_LEGACY:	This is used whenever an application needs to provide a
1756e91bba0SGirish Moodalbail  *		logical interface name while creating or deleting
1766e91bba0SGirish Moodalbail  *		interfaces and static addresses.
1776e91bba0SGirish Moodalbail  *  IPH_INIT:   Used by ipadm_init_prop(), to initialize protocol properties
1786e91bba0SGirish Moodalbail  *		on reboot.
1796e91bba0SGirish Moodalbail  */
1806e91bba0SGirish Moodalbail ipadm_status_t
ipadm_open(ipadm_handle_t * handle,uint32_t flags)1816e91bba0SGirish Moodalbail ipadm_open(ipadm_handle_t *handle, uint32_t flags)
1826e91bba0SGirish Moodalbail {
1836e91bba0SGirish Moodalbail 	ipadm_handle_t	iph;
1846e91bba0SGirish Moodalbail 	ipadm_status_t	status = IPADM_SUCCESS;
1856e91bba0SGirish Moodalbail 	zoneid_t	zoneid;
1866e91bba0SGirish Moodalbail 	ushort_t	zflags;
1876e91bba0SGirish Moodalbail 	int		on = B_TRUE;
1886e91bba0SGirish Moodalbail 
1896e91bba0SGirish Moodalbail 	if (handle == NULL)
1906e91bba0SGirish Moodalbail 		return (IPADM_INVALID_ARG);
1916e91bba0SGirish Moodalbail 	*handle = NULL;
1926e91bba0SGirish Moodalbail 
193550b6e40SSowmini Varadhan 	if (flags & ~(IPH_VRRP|IPH_LEGACY|IPH_INIT|IPH_IPMGMTD))
1946e91bba0SGirish Moodalbail 		return (IPADM_INVALID_ARG);
1956e91bba0SGirish Moodalbail 
1966e91bba0SGirish Moodalbail 	if ((iph = calloc(1, sizeof (struct ipadm_handle))) == NULL)
1976e91bba0SGirish Moodalbail 		return (IPADM_NO_MEMORY);
1986e91bba0SGirish Moodalbail 	iph->iph_sock = -1;
1996e91bba0SGirish Moodalbail 	iph->iph_sock6 = -1;
2006e91bba0SGirish Moodalbail 	iph->iph_door_fd = -1;
201550b6e40SSowmini Varadhan 	iph->iph_rtsock = -1;
2026e91bba0SGirish Moodalbail 	iph->iph_flags = flags;
2036e91bba0SGirish Moodalbail 	(void) pthread_mutex_init(&iph->iph_lock, NULL);
2046e91bba0SGirish Moodalbail 
2056e91bba0SGirish Moodalbail 	if ((iph->iph_sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0 ||
2066e91bba0SGirish Moodalbail 	    (iph->iph_sock6 = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
2076e91bba0SGirish Moodalbail 		goto errnofail;
2086e91bba0SGirish Moodalbail 	}
2096e91bba0SGirish Moodalbail 
2106e91bba0SGirish Moodalbail 	/*
2116e91bba0SGirish Moodalbail 	 * We open a handle to libdladm here, to facilitate some daemons (like
2126e91bba0SGirish Moodalbail 	 * nwamd) which opens handle to libipadm before devfsadmd installs the
2136e91bba0SGirish Moodalbail 	 * right device permissions into the kernel and requires "all"
2146e91bba0SGirish Moodalbail 	 * privileges to open DLD_CONTROL_DEV.
2156e91bba0SGirish Moodalbail 	 *
2166e91bba0SGirish Moodalbail 	 * In a non-global shared-ip zone there will be no DLD_CONTROL_DEV node
2176e91bba0SGirish Moodalbail 	 * and dladm_open() will fail. So, we avoid this by not calling
2186e91bba0SGirish Moodalbail 	 * dladm_open() for such zones.
2196e91bba0SGirish Moodalbail 	 */
2206e91bba0SGirish Moodalbail 	zoneid = getzoneid();
221550b6e40SSowmini Varadhan 	iph->iph_zoneid = zoneid;
2226e91bba0SGirish Moodalbail 	if (zoneid != GLOBAL_ZONEID) {
2236e91bba0SGirish Moodalbail 		if (zone_getattr(zoneid, ZONE_ATTR_FLAGS, &zflags,
2246e91bba0SGirish Moodalbail 		    sizeof (zflags)) < 0) {
2256e91bba0SGirish Moodalbail 			goto errnofail;
2266e91bba0SGirish Moodalbail 		}
2276e91bba0SGirish Moodalbail 	}
2286e91bba0SGirish Moodalbail 	if ((zoneid == GLOBAL_ZONEID) || (zflags & ZF_NET_EXCL)) {
2296e91bba0SGirish Moodalbail 		if (dladm_open(&iph->iph_dlh) != DLADM_STATUS_OK) {
2306e91bba0SGirish Moodalbail 			ipadm_close(iph);
2316e91bba0SGirish Moodalbail 			return (IPADM_DLADM_FAILURE);
2326e91bba0SGirish Moodalbail 		}
233550b6e40SSowmini Varadhan 		if (zoneid != GLOBAL_ZONEID) {
234550b6e40SSowmini Varadhan 			iph->iph_rtsock = socket(PF_ROUTE, SOCK_RAW, 0);
235550b6e40SSowmini Varadhan 			/*
236550b6e40SSowmini Varadhan 			 * Failure to open rtsock is ignored as this is
237550b6e40SSowmini Varadhan 			 * only used in non-global zones to initialize
238550b6e40SSowmini Varadhan 			 * routing socket information.
239550b6e40SSowmini Varadhan 			 */
240550b6e40SSowmini Varadhan 		}
2416e91bba0SGirish Moodalbail 	} else {
2426e91bba0SGirish Moodalbail 		assert(zoneid != GLOBAL_ZONEID);
2436e91bba0SGirish Moodalbail 		iph->iph_dlh = NULL;
2446e91bba0SGirish Moodalbail 	}
2456e91bba0SGirish Moodalbail 	if (flags & IPH_VRRP) {
2466e91bba0SGirish Moodalbail 		if (setsockopt(iph->iph_sock6, SOL_SOCKET, SO_VRRP, &on,
2476e91bba0SGirish Moodalbail 		    sizeof (on)) < 0 || setsockopt(iph->iph_sock, SOL_SOCKET,
2486e91bba0SGirish Moodalbail 		    SO_VRRP, &on, sizeof (on)) < 0) {
2496e91bba0SGirish Moodalbail 			goto errnofail;
2506e91bba0SGirish Moodalbail 		}
2516e91bba0SGirish Moodalbail 	}
2526e91bba0SGirish Moodalbail 	*handle = iph;
2536e91bba0SGirish Moodalbail 	return (status);
2546e91bba0SGirish Moodalbail 
2556e91bba0SGirish Moodalbail errnofail:
2566e91bba0SGirish Moodalbail 	status = ipadm_errno2status(errno);
2576e91bba0SGirish Moodalbail 	ipadm_close(iph);
2586e91bba0SGirish Moodalbail 	return (status);
2596e91bba0SGirish Moodalbail }
2606e91bba0SGirish Moodalbail 
2616e91bba0SGirish Moodalbail /*
2626e91bba0SGirish Moodalbail  * Closes and frees the libipadm handle.
2636e91bba0SGirish Moodalbail  */
2646e91bba0SGirish Moodalbail void
ipadm_close(ipadm_handle_t iph)2656e91bba0SGirish Moodalbail ipadm_close(ipadm_handle_t iph)
2666e91bba0SGirish Moodalbail {
2676e91bba0SGirish Moodalbail 	if (iph == NULL)
2686e91bba0SGirish Moodalbail 		return;
2696e91bba0SGirish Moodalbail 	if (iph->iph_sock != -1)
2706e91bba0SGirish Moodalbail 		(void) close(iph->iph_sock);
2716e91bba0SGirish Moodalbail 	if (iph->iph_sock6 != -1)
2726e91bba0SGirish Moodalbail 		(void) close(iph->iph_sock6);
273550b6e40SSowmini Varadhan 	if (iph->iph_rtsock != -1)
274550b6e40SSowmini Varadhan 		(void) close(iph->iph_rtsock);
2756e91bba0SGirish Moodalbail 	if (iph->iph_door_fd != -1)
2766e91bba0SGirish Moodalbail 		(void) close(iph->iph_door_fd);
2776e91bba0SGirish Moodalbail 	dladm_close(iph->iph_dlh);
2786e91bba0SGirish Moodalbail 	(void) pthread_mutex_destroy(&iph->iph_lock);
2796e91bba0SGirish Moodalbail 	free(iph);
2806e91bba0SGirish Moodalbail }
2816e91bba0SGirish Moodalbail 
2826e91bba0SGirish Moodalbail /*
2836e91bba0SGirish Moodalbail  * Checks if the caller has the authorization to configure network
2846e91bba0SGirish Moodalbail  * interfaces.
2856e91bba0SGirish Moodalbail  */
2866e91bba0SGirish Moodalbail boolean_t
ipadm_check_auth(void)2876e91bba0SGirish Moodalbail ipadm_check_auth(void)
2886e91bba0SGirish Moodalbail {
2896e91bba0SGirish Moodalbail 	struct passwd	pwd;
2906e91bba0SGirish Moodalbail 	char		buf[NSS_BUFLEN_PASSWD];
2916e91bba0SGirish Moodalbail 
2926e91bba0SGirish Moodalbail 	/* get the password entry for the given user ID */
2936e91bba0SGirish Moodalbail 	if (getpwuid_r(getuid(), &pwd, buf, sizeof (buf)) == NULL)
2946e91bba0SGirish Moodalbail 		return (B_FALSE);
2956e91bba0SGirish Moodalbail 
2966e91bba0SGirish Moodalbail 	/* check for presence of given authorization */
2976e91bba0SGirish Moodalbail 	return (chkauthattr(NETWORK_INTERFACE_CONFIG_AUTH, pwd.pw_name) != 0);
2986e91bba0SGirish Moodalbail }
2996e91bba0SGirish Moodalbail 
3006e91bba0SGirish Moodalbail /*
3016e91bba0SGirish Moodalbail  * Stores the index value of the interface in `ifname' for the address
3026e91bba0SGirish Moodalbail  * family `af' into the buffer pointed to by `index'.
3036e91bba0SGirish Moodalbail  */
3046e91bba0SGirish Moodalbail static ipadm_status_t
i_ipadm_get_index(ipadm_handle_t iph,const char * ifname,sa_family_t af,int * index)3056e91bba0SGirish Moodalbail i_ipadm_get_index(ipadm_handle_t iph, const char *ifname, sa_family_t af,
3066e91bba0SGirish Moodalbail     int *index)
3076e91bba0SGirish Moodalbail {
3086e91bba0SGirish Moodalbail 	struct lifreq	lifr;
3096e91bba0SGirish Moodalbail 	int		sock;
3106e91bba0SGirish Moodalbail 
3116e91bba0SGirish Moodalbail 	bzero(&lifr, sizeof (lifr));
3126e91bba0SGirish Moodalbail 	(void) strlcpy(lifr.lifr_name, ifname, sizeof (lifr.lifr_name));
3136e91bba0SGirish Moodalbail 	if (af == AF_INET)
3146e91bba0SGirish Moodalbail 		sock = iph->iph_sock;
3156e91bba0SGirish Moodalbail 	else
3166e91bba0SGirish Moodalbail 		sock = iph->iph_sock6;
3176e91bba0SGirish Moodalbail 
3186e91bba0SGirish Moodalbail 	if (ioctl(sock, SIOCGLIFINDEX, (caddr_t)&lifr) < 0)
3196e91bba0SGirish Moodalbail 		return (ipadm_errno2status(errno));
3206e91bba0SGirish Moodalbail 	*index = lifr.lifr_index;
3216e91bba0SGirish Moodalbail 
3226e91bba0SGirish Moodalbail 	return (IPADM_SUCCESS);
3236e91bba0SGirish Moodalbail }
3246e91bba0SGirish Moodalbail 
3256e91bba0SGirish Moodalbail /*
3266e91bba0SGirish Moodalbail  * Maximum amount of time (in milliseconds) to wait for Duplicate Address
3276e91bba0SGirish Moodalbail  * Detection to complete in the kernel.
3286e91bba0SGirish Moodalbail  */
3296e91bba0SGirish Moodalbail #define	DAD_WAIT_TIME		1000
3306e91bba0SGirish Moodalbail 
3316e91bba0SGirish Moodalbail /*
3326e91bba0SGirish Moodalbail  * Any time that flags are changed on an interface where either the new or the
3336e91bba0SGirish Moodalbail  * existing flags have IFF_UP set, we'll get a RTM_NEWADDR message to
3346e91bba0SGirish Moodalbail  * announce the new address added and its flag status.
3356e91bba0SGirish Moodalbail  * We wait here for that message and look for IFF_UP.
3366e91bba0SGirish Moodalbail  * If something's amiss with the kernel, though, we don't wait forever.
3376e91bba0SGirish Moodalbail  * (Note that IFF_DUPLICATE is a high-order bit, and we cannot see
3386e91bba0SGirish Moodalbail  * it in the routing socket messages.)
3396e91bba0SGirish Moodalbail  */
3406e91bba0SGirish Moodalbail static ipadm_status_t
i_ipadm_dad_wait(ipadm_handle_t handle,const char * lifname,sa_family_t af,int rtsock)3416e91bba0SGirish Moodalbail i_ipadm_dad_wait(ipadm_handle_t handle, const char *lifname, sa_family_t af,
3426e91bba0SGirish Moodalbail     int rtsock)
3436e91bba0SGirish Moodalbail {
3446e91bba0SGirish Moodalbail 	struct pollfd	fds[1];
3456e91bba0SGirish Moodalbail 	union {
3466e91bba0SGirish Moodalbail 		struct if_msghdr ifm;
3476e91bba0SGirish Moodalbail 		char buf[1024];
3486e91bba0SGirish Moodalbail 	} msg;
3496e91bba0SGirish Moodalbail 	int		index;
3506e91bba0SGirish Moodalbail 	ipadm_status_t	retv;
3516e91bba0SGirish Moodalbail 	uint64_t	flags;
3526e91bba0SGirish Moodalbail 	hrtime_t	starttime, now;
3536e91bba0SGirish Moodalbail 
3546e91bba0SGirish Moodalbail 	fds[0].fd = rtsock;
3556e91bba0SGirish Moodalbail 	fds[0].events = POLLIN;
3566e91bba0SGirish Moodalbail 	fds[0].revents = 0;
3576e91bba0SGirish Moodalbail 
3586e91bba0SGirish Moodalbail 	retv = i_ipadm_get_index(handle, lifname, af, &index);
3596e91bba0SGirish Moodalbail 	if (retv != IPADM_SUCCESS)
3606e91bba0SGirish Moodalbail 		return (retv);
3616e91bba0SGirish Moodalbail 
3626e91bba0SGirish Moodalbail 	starttime = gethrtime();
3636e91bba0SGirish Moodalbail 	for (;;) {
3646e91bba0SGirish Moodalbail 		now = gethrtime();
3656e91bba0SGirish Moodalbail 		now = (now - starttime) / 1000000;
3666e91bba0SGirish Moodalbail 		if (now >= DAD_WAIT_TIME)
3676e91bba0SGirish Moodalbail 			break;
3686e91bba0SGirish Moodalbail 		if (poll(fds, 1, DAD_WAIT_TIME - (int)now) <= 0)
3696e91bba0SGirish Moodalbail 			break;
3706e91bba0SGirish Moodalbail 		if (read(rtsock, &msg, sizeof (msg)) <= 0)
3716e91bba0SGirish Moodalbail 			break;
3726e91bba0SGirish Moodalbail 		if (msg.ifm.ifm_type != RTM_NEWADDR)
3736e91bba0SGirish Moodalbail 			continue;
3746e91bba0SGirish Moodalbail 		/* Note that ifm_index is just 16 bits */
3756e91bba0SGirish Moodalbail 		if (index == msg.ifm.ifm_index && (msg.ifm.ifm_flags & IFF_UP))
3766e91bba0SGirish Moodalbail 			return (IPADM_SUCCESS);
3776e91bba0SGirish Moodalbail 	}
3786e91bba0SGirish Moodalbail 
3796e91bba0SGirish Moodalbail 	retv = i_ipadm_get_flags(handle, lifname, af, &flags);
3806e91bba0SGirish Moodalbail 	if (retv != IPADM_SUCCESS)
3816e91bba0SGirish Moodalbail 		return (retv);
3826e91bba0SGirish Moodalbail 	if (flags & IFF_DUPLICATE)
3836e91bba0SGirish Moodalbail 		return (IPADM_DAD_FOUND);
3846e91bba0SGirish Moodalbail 
3856e91bba0SGirish Moodalbail 	return (IPADM_SUCCESS);
3866e91bba0SGirish Moodalbail }
3876e91bba0SGirish Moodalbail 
3886e91bba0SGirish Moodalbail /*
3896e91bba0SGirish Moodalbail  * Sets the flags `on_flags' and resets the flags `off_flags' for the logical
3906e91bba0SGirish Moodalbail  * interface in `lifname'.
3916e91bba0SGirish Moodalbail  *
3926e91bba0SGirish Moodalbail  * If the new flags value will transition the interface from "down" to "up"
3936e91bba0SGirish Moodalbail  * then duplicate address detection is performed by the kernel.  This routine
3946e91bba0SGirish Moodalbail  * waits to get the outcome of that test.
3956e91bba0SGirish Moodalbail  */
3966e91bba0SGirish Moodalbail ipadm_status_t
i_ipadm_set_flags(ipadm_handle_t iph,const char * lifname,sa_family_t af,uint64_t on_flags,uint64_t off_flags)3976e91bba0SGirish Moodalbail i_ipadm_set_flags(ipadm_handle_t iph, const char *lifname, sa_family_t af,
3986e91bba0SGirish Moodalbail     uint64_t on_flags, uint64_t off_flags)
3996e91bba0SGirish Moodalbail {
4006e91bba0SGirish Moodalbail 	struct lifreq	lifr;
4016e91bba0SGirish Moodalbail 	uint64_t	oflags;
4026e91bba0SGirish Moodalbail 	ipadm_status_t	ret;
4036e91bba0SGirish Moodalbail 	int		rtsock = -1;
4046e91bba0SGirish Moodalbail 	int		sock, err;
4056e91bba0SGirish Moodalbail 
4066e91bba0SGirish Moodalbail 	ret = i_ipadm_get_flags(iph, lifname, af, &oflags);
4076e91bba0SGirish Moodalbail 	if (ret != IPADM_SUCCESS)
4086e91bba0SGirish Moodalbail 		return (ret);
4096e91bba0SGirish Moodalbail 
4106e91bba0SGirish Moodalbail 	sock = (af == AF_INET ? iph->iph_sock : iph->iph_sock6);
4116e91bba0SGirish Moodalbail 
4126e91bba0SGirish Moodalbail 	/*
4136e91bba0SGirish Moodalbail 	 * Any time flags are changed on an interface that has IFF_UP set,
4146e91bba0SGirish Moodalbail 	 * we get a routing socket message.  We care about the status,
4156e91bba0SGirish Moodalbail 	 * though, only when the new flags are marked "up."
4166e91bba0SGirish Moodalbail 	 */
4176e91bba0SGirish Moodalbail 	if (!(oflags & IFF_UP) && (on_flags & IFF_UP))
4186e91bba0SGirish Moodalbail 		rtsock = socket(PF_ROUTE, SOCK_RAW, af);
4196e91bba0SGirish Moodalbail 
4206e91bba0SGirish Moodalbail 	oflags |= on_flags;
4216e91bba0SGirish Moodalbail 	oflags &= ~off_flags;
4226e91bba0SGirish Moodalbail 	bzero(&lifr, sizeof (lifr));
4236e91bba0SGirish Moodalbail 	(void) strlcpy(lifr.lifr_name, lifname, sizeof (lifr.lifr_name));
4246e91bba0SGirish Moodalbail 	lifr.lifr_flags = oflags;
4256e91bba0SGirish Moodalbail 	if (ioctl(sock, SIOCSLIFFLAGS, (caddr_t)&lifr) < 0) {
4266e91bba0SGirish Moodalbail 		err = errno;
4276e91bba0SGirish Moodalbail 		if (rtsock != -1)
4286e91bba0SGirish Moodalbail 			(void) close(rtsock);
4296e91bba0SGirish Moodalbail 		return (ipadm_errno2status(err));
4306e91bba0SGirish Moodalbail 	}
4316e91bba0SGirish Moodalbail 	if (rtsock == -1) {
4326e91bba0SGirish Moodalbail 		return (IPADM_SUCCESS);
4336e91bba0SGirish Moodalbail 	} else {
4346e91bba0SGirish Moodalbail 		/* Wait for DAD to complete. */
4356e91bba0SGirish Moodalbail 		ret = i_ipadm_dad_wait(iph, lifname, af, rtsock);
4366e91bba0SGirish Moodalbail 		(void) close(rtsock);
4376e91bba0SGirish Moodalbail 		return (ret);
4386e91bba0SGirish Moodalbail 	}
4396e91bba0SGirish Moodalbail }
4406e91bba0SGirish Moodalbail 
4416e91bba0SGirish Moodalbail /*
4426e91bba0SGirish Moodalbail  * Returns the flags value for the logical interface in `lifname'
4436e91bba0SGirish Moodalbail  * in the buffer pointed to by `flags'.
4446e91bba0SGirish Moodalbail  */
4456e91bba0SGirish Moodalbail ipadm_status_t
i_ipadm_get_flags(ipadm_handle_t iph,const char * lifname,sa_family_t af,uint64_t * flags)4466e91bba0SGirish Moodalbail i_ipadm_get_flags(ipadm_handle_t iph, const char *lifname, sa_family_t af,
4476e91bba0SGirish Moodalbail     uint64_t *flags)
4486e91bba0SGirish Moodalbail {
4496e91bba0SGirish Moodalbail 	struct lifreq	lifr;
4506e91bba0SGirish Moodalbail 	int		sock;
4516e91bba0SGirish Moodalbail 
4526e91bba0SGirish Moodalbail 	bzero(&lifr, sizeof (lifr));
4536e91bba0SGirish Moodalbail 	(void) strlcpy(lifr.lifr_name, lifname, sizeof (lifr.lifr_name));
4546e91bba0SGirish Moodalbail 	if (af == AF_INET)
4556e91bba0SGirish Moodalbail 		sock = iph->iph_sock;
4566e91bba0SGirish Moodalbail 	else
4576e91bba0SGirish Moodalbail 		sock = iph->iph_sock6;
4586e91bba0SGirish Moodalbail 
4596e91bba0SGirish Moodalbail 	if (ioctl(sock, SIOCGLIFFLAGS, (caddr_t)&lifr) < 0) {
4606e91bba0SGirish Moodalbail 		return (ipadm_errno2status(errno));
4616e91bba0SGirish Moodalbail 	}
4626e91bba0SGirish Moodalbail 	*flags = lifr.lifr_flags;
4636e91bba0SGirish Moodalbail 
4646e91bba0SGirish Moodalbail 	return (IPADM_SUCCESS);
4656e91bba0SGirish Moodalbail }
4666e91bba0SGirish Moodalbail 
4676e91bba0SGirish Moodalbail /*
4686e91bba0SGirish Moodalbail  * Determines whether or not an interface name represents a loopback
4696e91bba0SGirish Moodalbail  * interface, before the interface has been plumbed.
4706e91bba0SGirish Moodalbail  * It is assumed that the interface name in `ifname' is of correct format
4716e91bba0SGirish Moodalbail  * as verified by ifparse_ifspec().
4726e91bba0SGirish Moodalbail  *
4736e91bba0SGirish Moodalbail  * Returns: B_TRUE if loopback, B_FALSE if not.
4746e91bba0SGirish Moodalbail  */
4756e91bba0SGirish Moodalbail boolean_t
i_ipadm_is_loopback(const char * ifname)4766e91bba0SGirish Moodalbail i_ipadm_is_loopback(const char *ifname)
4776e91bba0SGirish Moodalbail {
4786e91bba0SGirish Moodalbail 	int len = strlen(LOOPBACK_IF);
4796e91bba0SGirish Moodalbail 
4806e91bba0SGirish Moodalbail 	return (strncmp(ifname, LOOPBACK_IF, len) == 0 &&
4816e91bba0SGirish Moodalbail 	    (ifname[len] == '\0' || ifname[len] == IPADM_LOGICAL_SEP));
4826e91bba0SGirish Moodalbail }
4836e91bba0SGirish Moodalbail 
4846e91bba0SGirish Moodalbail /*
4856e91bba0SGirish Moodalbail  * Determines whether or not an interface name represents a vni
4866e91bba0SGirish Moodalbail  * interface, before the interface has been plumbed.
4876e91bba0SGirish Moodalbail  * It is assumed that the interface name in `ifname' is of correct format
4886e91bba0SGirish Moodalbail  * as verified by ifparse_ifspec().
4896e91bba0SGirish Moodalbail  *
4906e91bba0SGirish Moodalbail  * Returns: B_TRUE if vni, B_FALSE if not.
4916e91bba0SGirish Moodalbail  */
4926e91bba0SGirish Moodalbail boolean_t
i_ipadm_is_vni(const char * ifname)4936e91bba0SGirish Moodalbail i_ipadm_is_vni(const char *ifname)
4946e91bba0SGirish Moodalbail {
4956e91bba0SGirish Moodalbail 	ifspec_t	ifsp;
4966e91bba0SGirish Moodalbail 
4976e91bba0SGirish Moodalbail 	return (ifparse_ifspec(ifname, &ifsp) &&
4986e91bba0SGirish Moodalbail 	    strcmp(ifsp.ifsp_devnm, "vni") == 0);
4996e91bba0SGirish Moodalbail }
5006e91bba0SGirish Moodalbail 
5016e91bba0SGirish Moodalbail /*
5026e91bba0SGirish Moodalbail  * Returns B_TRUE if `ifname' is an IP interface on a 6to4 tunnel.
5036e91bba0SGirish Moodalbail  */
5046e91bba0SGirish Moodalbail boolean_t
i_ipadm_is_6to4(ipadm_handle_t iph,char * ifname)5056e91bba0SGirish Moodalbail i_ipadm_is_6to4(ipadm_handle_t iph, char *ifname)
5066e91bba0SGirish Moodalbail {
5076e91bba0SGirish Moodalbail 	dladm_status_t		dlstatus;
5086e91bba0SGirish Moodalbail 	datalink_class_t	class;
5096e91bba0SGirish Moodalbail 	iptun_params_t		params;
5106e91bba0SGirish Moodalbail 	datalink_id_t		linkid;
5116e91bba0SGirish Moodalbail 
5126e91bba0SGirish Moodalbail 	if (iph->iph_dlh == NULL) {
513550b6e40SSowmini Varadhan 		assert(iph->iph_zoneid != GLOBAL_ZONEID);
5146e91bba0SGirish Moodalbail 		return (B_FALSE);
5156e91bba0SGirish Moodalbail 	}
5166e91bba0SGirish Moodalbail 	dlstatus = dladm_name2info(iph->iph_dlh, ifname, &linkid, NULL,
5176e91bba0SGirish Moodalbail 	    &class, NULL);
5186e91bba0SGirish Moodalbail 	if (dlstatus == DLADM_STATUS_OK && class == DATALINK_CLASS_IPTUN) {
5196e91bba0SGirish Moodalbail 		params.iptun_param_linkid = linkid;
5206e91bba0SGirish Moodalbail 		dlstatus = dladm_iptun_getparams(iph->iph_dlh, &params,
5216e91bba0SGirish Moodalbail 		    DLADM_OPT_ACTIVE);
5226e91bba0SGirish Moodalbail 		if (dlstatus == DLADM_STATUS_OK &&
5236e91bba0SGirish Moodalbail 		    params.iptun_param_type == IPTUN_TYPE_6TO4) {
5246e91bba0SGirish Moodalbail 			return (B_TRUE);
5256e91bba0SGirish Moodalbail 		}
5266e91bba0SGirish Moodalbail 	}
5276e91bba0SGirish Moodalbail 	return (B_FALSE);
5286e91bba0SGirish Moodalbail }
5296e91bba0SGirish Moodalbail 
5306e91bba0SGirish Moodalbail /*
5316e91bba0SGirish Moodalbail  * For a given interface name, ipadm_if_enabled() checks if v4
5326e91bba0SGirish Moodalbail  * or v6 or both IP interfaces exist in the active configuration.
5336e91bba0SGirish Moodalbail  */
5346e91bba0SGirish Moodalbail boolean_t
ipadm_if_enabled(ipadm_handle_t iph,const char * ifname,sa_family_t af)5356e91bba0SGirish Moodalbail ipadm_if_enabled(ipadm_handle_t iph, const char *ifname, sa_family_t af)
5366e91bba0SGirish Moodalbail {
5376e91bba0SGirish Moodalbail 	struct lifreq	lifr;
5386e91bba0SGirish Moodalbail 	int		s4 = iph->iph_sock;
5396e91bba0SGirish Moodalbail 	int		s6 = iph->iph_sock6;
5406e91bba0SGirish Moodalbail 
5416e91bba0SGirish Moodalbail 	bzero(&lifr, sizeof (lifr));
5426e91bba0SGirish Moodalbail 	(void) strlcpy(lifr.lifr_name, ifname, sizeof (lifr.lifr_name));
5436e91bba0SGirish Moodalbail 	switch (af) {
5446e91bba0SGirish Moodalbail 	case AF_INET:
5456e91bba0SGirish Moodalbail 		if (ioctl(s4, SIOCGLIFFLAGS, (caddr_t)&lifr) == 0)
5466e91bba0SGirish Moodalbail 			return (B_TRUE);
5476e91bba0SGirish Moodalbail 		break;
5486e91bba0SGirish Moodalbail 	case AF_INET6:
5496e91bba0SGirish Moodalbail 		if (ioctl(s6, SIOCGLIFFLAGS, (caddr_t)&lifr) == 0)
5506e91bba0SGirish Moodalbail 			return (B_TRUE);
5516e91bba0SGirish Moodalbail 		break;
5526e91bba0SGirish Moodalbail 	case AF_UNSPEC:
5536e91bba0SGirish Moodalbail 		if (ioctl(s4, SIOCGLIFFLAGS, (caddr_t)&lifr) == 0 ||
5546e91bba0SGirish Moodalbail 		    ioctl(s6, SIOCGLIFFLAGS, (caddr_t)&lifr) == 0) {
5556e91bba0SGirish Moodalbail 			return (B_TRUE);
5566e91bba0SGirish Moodalbail 		}
5576e91bba0SGirish Moodalbail 	}
5586e91bba0SGirish Moodalbail 	return (B_FALSE);
5596e91bba0SGirish Moodalbail }
5606e91bba0SGirish Moodalbail 
5616e91bba0SGirish Moodalbail /*
5626e91bba0SGirish Moodalbail  * Apply the interface property by retrieving information from nvl.
5636e91bba0SGirish Moodalbail  */
5646e91bba0SGirish Moodalbail static ipadm_status_t
i_ipadm_init_ifprop(ipadm_handle_t iph,nvlist_t * nvl)5656e91bba0SGirish Moodalbail i_ipadm_init_ifprop(ipadm_handle_t iph, nvlist_t *nvl)
5666e91bba0SGirish Moodalbail {
5676e91bba0SGirish Moodalbail 	nvpair_t	*nvp;
5686e91bba0SGirish Moodalbail 	char		*name, *pname = NULL;
5696e91bba0SGirish Moodalbail 	char		*protostr = NULL, *ifname = NULL, *pval = NULL;
5706e91bba0SGirish Moodalbail 	uint_t		proto;
5716e91bba0SGirish Moodalbail 	int		err = 0;
5726e91bba0SGirish Moodalbail 
5736e91bba0SGirish Moodalbail 	for (nvp = nvlist_next_nvpair(nvl, NULL); nvp != NULL;
5746e91bba0SGirish Moodalbail 	    nvp = nvlist_next_nvpair(nvl, nvp)) {
5756e91bba0SGirish Moodalbail 		name = nvpair_name(nvp);
5766e91bba0SGirish Moodalbail 		if (strcmp(name, IPADM_NVP_IFNAME) == 0) {
5776e91bba0SGirish Moodalbail 			if ((err = nvpair_value_string(nvp, &ifname)) != 0)
5786e91bba0SGirish Moodalbail 				break;
5796e91bba0SGirish Moodalbail 		} else if (strcmp(name, IPADM_NVP_PROTONAME) == 0) {
5806e91bba0SGirish Moodalbail 			if ((err = nvpair_value_string(nvp, &protostr)) != 0)
5816e91bba0SGirish Moodalbail 				break;
5826e91bba0SGirish Moodalbail 		} else {
5836e91bba0SGirish Moodalbail 			assert(!IPADM_PRIV_NVP(name));
5846e91bba0SGirish Moodalbail 			pname = name;
5856e91bba0SGirish Moodalbail 			if ((err = nvpair_value_string(nvp, &pval)) != 0)
5866e91bba0SGirish Moodalbail 				break;
5876e91bba0SGirish Moodalbail 		}
5886e91bba0SGirish Moodalbail 	}
5896e91bba0SGirish Moodalbail 	if (err != 0)
5906e91bba0SGirish Moodalbail 		return (ipadm_errno2status(err));
5916e91bba0SGirish Moodalbail 	proto = ipadm_str2proto(protostr);
5926e91bba0SGirish Moodalbail 	return (ipadm_set_ifprop(iph, ifname, pname, pval, proto,
5936e91bba0SGirish Moodalbail 	    IPADM_OPT_ACTIVE));
5946e91bba0SGirish Moodalbail }
5956e91bba0SGirish Moodalbail 
5966e91bba0SGirish Moodalbail /*
5976e91bba0SGirish Moodalbail  * Instantiate the address object or set the address object property by
5986e91bba0SGirish Moodalbail  * retrieving the configuration from the nvlist `nvl'.
5996e91bba0SGirish Moodalbail  */
6006e91bba0SGirish Moodalbail ipadm_status_t
i_ipadm_init_addrobj(ipadm_handle_t iph,nvlist_t * nvl)6016e91bba0SGirish Moodalbail i_ipadm_init_addrobj(ipadm_handle_t iph, nvlist_t *nvl)
6026e91bba0SGirish Moodalbail {
6036e91bba0SGirish Moodalbail 	nvpair_t	*nvp;
6046e91bba0SGirish Moodalbail 	char		*name;
6056e91bba0SGirish Moodalbail 	char		*aobjname = NULL, *pval = NULL, *ifname = NULL;
6066e91bba0SGirish Moodalbail 	sa_family_t	af = AF_UNSPEC;
6076e91bba0SGirish Moodalbail 	ipadm_addr_type_t atype = IPADM_ADDR_NONE;
6086e91bba0SGirish Moodalbail 	int		err = 0;
6096e91bba0SGirish Moodalbail 	ipadm_status_t	status = IPADM_SUCCESS;
6106e91bba0SGirish Moodalbail 
6116e91bba0SGirish Moodalbail 	for (nvp = nvlist_next_nvpair(nvl, NULL); nvp != NULL;
6126e91bba0SGirish Moodalbail 	    nvp = nvlist_next_nvpair(nvl, nvp)) {
6136e91bba0SGirish Moodalbail 		name = nvpair_name(nvp);
6146e91bba0SGirish Moodalbail 		if (strcmp(name, IPADM_NVP_IFNAME) == 0) {
6156e91bba0SGirish Moodalbail 			if ((err = nvpair_value_string(nvp, &ifname)) != 0)
6166e91bba0SGirish Moodalbail 				break;
6176e91bba0SGirish Moodalbail 		} else if (strcmp(name, IPADM_NVP_AOBJNAME) == 0) {
6186e91bba0SGirish Moodalbail 			if ((err = nvpair_value_string(nvp, &aobjname)) != 0)
6196e91bba0SGirish Moodalbail 				break;
6206e91bba0SGirish Moodalbail 		} else if (i_ipadm_name2atype(name, &af, &atype)) {
6216e91bba0SGirish Moodalbail 			break;
6226e91bba0SGirish Moodalbail 		} else {
6236e91bba0SGirish Moodalbail 			assert(!IPADM_PRIV_NVP(name));
6246e91bba0SGirish Moodalbail 			err = nvpair_value_string(nvp, &pval);
6256e91bba0SGirish Moodalbail 			break;
6266e91bba0SGirish Moodalbail 		}
6276e91bba0SGirish Moodalbail 	}
6286e91bba0SGirish Moodalbail 	if (err != 0)
6296e91bba0SGirish Moodalbail 		return (ipadm_errno2status(err));
6306e91bba0SGirish Moodalbail 
6316e91bba0SGirish Moodalbail 	switch (atype) {
6326e91bba0SGirish Moodalbail 	case IPADM_ADDR_STATIC:
6336e91bba0SGirish Moodalbail 		status = i_ipadm_enable_static(iph, ifname, nvl, af);
6346e91bba0SGirish Moodalbail 		break;
6356e91bba0SGirish Moodalbail 	case IPADM_ADDR_DHCP:
6366e91bba0SGirish Moodalbail 		status = i_ipadm_enable_dhcp(iph, ifname, nvl);
6376e91bba0SGirish Moodalbail 		if (status == IPADM_DHCP_IPC_TIMEOUT)
6386e91bba0SGirish Moodalbail 			status = IPADM_SUCCESS;
6396e91bba0SGirish Moodalbail 		break;
6406e91bba0SGirish Moodalbail 	case IPADM_ADDR_IPV6_ADDRCONF:
6416e91bba0SGirish Moodalbail 		status = i_ipadm_enable_addrconf(iph, ifname, nvl);
6426e91bba0SGirish Moodalbail 		break;
6436e91bba0SGirish Moodalbail 	case IPADM_ADDR_NONE:
6446e91bba0SGirish Moodalbail 		status = ipadm_set_addrprop(iph, name, pval, aobjname,
6456e91bba0SGirish Moodalbail 		    IPADM_OPT_ACTIVE);
6466e91bba0SGirish Moodalbail 		break;
6476e91bba0SGirish Moodalbail 	}
6486e91bba0SGirish Moodalbail 
6496e91bba0SGirish Moodalbail 	return (status);
6506e91bba0SGirish Moodalbail }
6516e91bba0SGirish Moodalbail 
6526e91bba0SGirish Moodalbail /*
6536e91bba0SGirish Moodalbail  * Instantiate the interface object by retrieving the configuration from
6546e91bba0SGirish Moodalbail  * `ifnvl'. The nvlist `ifnvl' contains all the persistent configuration
6556e91bba0SGirish Moodalbail  * (interface properties and address objects on that interface) for the
6566e91bba0SGirish Moodalbail  * given `ifname'.
6576e91bba0SGirish Moodalbail  */
6586e91bba0SGirish Moodalbail ipadm_status_t
i_ipadm_init_ifobj(ipadm_handle_t iph,const char * ifname,nvlist_t * ifnvl)6596e91bba0SGirish Moodalbail i_ipadm_init_ifobj(ipadm_handle_t iph, const char *ifname, nvlist_t *ifnvl)
6606e91bba0SGirish Moodalbail {
6616e91bba0SGirish Moodalbail 	nvlist_t	*nvl = NULL;
6626e91bba0SGirish Moodalbail 	nvpair_t	*nvp;
663a73be61aSHans Rosenfeld 	ipadm_status_t	status = IPADM_ENXIO;
6646e91bba0SGirish Moodalbail 	ipadm_status_t	ret_status = IPADM_SUCCESS;
6656e91bba0SGirish Moodalbail 	char		newifname[LIFNAMSIZ];
6666e91bba0SGirish Moodalbail 	char		*aobjstr;
667a73be61aSHans Rosenfeld 	uint16_t	*afs;
668a73be61aSHans Rosenfeld 	char		*gifname;
669a73be61aSHans Rosenfeld 	uint_t		nelem = 0;
670a73be61aSHans Rosenfeld 	boolean_t	init_from_gz = B_FALSE;
671a73be61aSHans Rosenfeld 	boolean_t	move_to_group = B_FALSE;
6726e91bba0SGirish Moodalbail 
6736e91bba0SGirish Moodalbail 	(void) strlcpy(newifname, ifname, sizeof (newifname));
674a73be61aSHans Rosenfeld 
6756e91bba0SGirish Moodalbail 	/*
676a73be61aSHans Rosenfeld 	 * First go through the ifnvl nvlist looking for nested nvlist
677a73be61aSHans Rosenfeld 	 * containing interface class and address families.
6786e91bba0SGirish Moodalbail 	 */
6796e91bba0SGirish Moodalbail 	for (nvp = nvlist_next_nvpair(ifnvl, NULL); nvp != NULL;
6806e91bba0SGirish Moodalbail 	    nvp = nvlist_next_nvpair(ifnvl, nvp)) {
681a73be61aSHans Rosenfeld 		char *icstr;
682a73be61aSHans Rosenfeld 		char **mifnames;
683a73be61aSHans Rosenfeld 		uint32_t ipadm_flags = IPADM_OPT_ACTIVE;
684a73be61aSHans Rosenfeld 
685a73be61aSHans Rosenfeld 		if (nvpair_value_nvlist(nvp, &nvl) != 0 ||
686a73be61aSHans Rosenfeld 		    nvlist_lookup_uint16_array(nvl, IPADM_NVP_FAMILIES,
687a73be61aSHans Rosenfeld 		    &afs, &nelem) != 0)
6886e91bba0SGirish Moodalbail 			continue;
6896e91bba0SGirish Moodalbail 
690a73be61aSHans Rosenfeld 		/* Check if this is IPMP group interface */
691a73be61aSHans Rosenfeld 		if (nvlist_lookup_string(nvl, IPADM_NVP_IFCLASS,
692a73be61aSHans Rosenfeld 		    &icstr) == 0 && atoi(icstr) == IPADM_IF_CLASS_IPMP)
693a73be61aSHans Rosenfeld 			ipadm_flags |= IPADM_OPT_IPMP;
694a73be61aSHans Rosenfeld 
695a73be61aSHans Rosenfeld 		/* Create interfaces for address families specified */
696a73be61aSHans Rosenfeld 		while (nelem-- > 0) {
697a73be61aSHans Rosenfeld 			uint16_t af = afs[nelem];
698a73be61aSHans Rosenfeld 
699a73be61aSHans Rosenfeld 			assert(af == AF_INET || af == AF_INET6);
700a73be61aSHans Rosenfeld 
701a73be61aSHans Rosenfeld 			status = i_ipadm_plumb_if(iph, newifname, af,
702a73be61aSHans Rosenfeld 			    ipadm_flags);
7036e91bba0SGirish Moodalbail 			if (status == IPADM_IF_EXISTS)
7046e91bba0SGirish Moodalbail 				status = IPADM_SUCCESS;
705a73be61aSHans Rosenfeld 			if (status != IPADM_SUCCESS)
706a73be61aSHans Rosenfeld 				return (status);
707a73be61aSHans Rosenfeld 		}
708a73be61aSHans Rosenfeld 		if (nvlist_lookup_string(nvl, IPADM_NVP_GIFNAME,
709a73be61aSHans Rosenfeld 		    &gifname) == 0) {
710a73be61aSHans Rosenfeld 			/*
711a73be61aSHans Rosenfeld 			 * IPMP underlying interface. Move to the
712a73be61aSHans Rosenfeld 			 * specified IPMP group.
713a73be61aSHans Rosenfeld 			 */
714a73be61aSHans Rosenfeld 			move_to_group = B_TRUE;
715a73be61aSHans Rosenfeld 		} else if ((ipadm_flags & IPADM_OPT_IPMP) &&
716a73be61aSHans Rosenfeld 		    nvlist_lookup_string_array(nvl, IPADM_NVP_MIFNAMES,
717a73be61aSHans Rosenfeld 		    &mifnames, &nelem) == 0) {
718a73be61aSHans Rosenfeld 			/* Non-empty IPMP group interface */
719a73be61aSHans Rosenfeld 			while (nelem-- > 0) {
720a73be61aSHans Rosenfeld 				(void) ipadm_add_ipmp_member(iph, newifname,
721a73be61aSHans Rosenfeld 				    mifnames[nelem], IPADM_OPT_ACTIVE);
722a73be61aSHans Rosenfeld 			}
723a73be61aSHans Rosenfeld 		}
724a73be61aSHans Rosenfeld 		if (iph->iph_zoneid != GLOBAL_ZONEID)
725a73be61aSHans Rosenfeld 			init_from_gz = B_TRUE;
726a73be61aSHans Rosenfeld 	}
727550b6e40SSowmini Varadhan 
728a73be61aSHans Rosenfeld 	if (status != IPADM_SUCCESS)
729a73be61aSHans Rosenfeld 		return (status);
730a73be61aSHans Rosenfeld 
731a73be61aSHans Rosenfeld 	/*
732a73be61aSHans Rosenfeld 	 * Go through the ifnvl nvlist again, applying persistent configuration.
733a73be61aSHans Rosenfeld 	 */
734a73be61aSHans Rosenfeld 	for (nvp = nvlist_next_nvpair(ifnvl, NULL); nvp != NULL;
735a73be61aSHans Rosenfeld 	    nvp = nvlist_next_nvpair(ifnvl, nvp)) {
736a73be61aSHans Rosenfeld 		if (nvpair_value_nvlist(nvp, &nvl) != 0)
737a73be61aSHans Rosenfeld 			continue;
738a73be61aSHans Rosenfeld 		if (nvlist_lookup_string(nvl, IPADM_NVP_AOBJNAME,
7396e91bba0SGirish Moodalbail 		    &aobjstr) == 0) {
7406e91bba0SGirish Moodalbail 			/*
741b31320a7SChris Fraire 			 * For addresses, we need to relocate addrprops from the
742b31320a7SChris Fraire 			 * nvlist `ifnvl'.
7436e91bba0SGirish Moodalbail 			 */
7446e91bba0SGirish Moodalbail 			if (nvlist_exists(nvl, IPADM_NVP_IPV4ADDR) ||
745b31320a7SChris Fraire 			    nvlist_exists(nvl, IPADM_NVP_IPV6ADDR) ||
746b31320a7SChris Fraire 			    nvlist_exists(nvl, IPADM_NVP_DHCP)) {
747b31320a7SChris Fraire 				status = i_ipadm_merge_addrprops_from_nvl(ifnvl,
7486e91bba0SGirish Moodalbail 				    nvl, aobjstr);
749a73be61aSHans Rosenfeld 
7506e91bba0SGirish Moodalbail 				if (status != IPADM_SUCCESS)
7516e91bba0SGirish Moodalbail 					continue;
7526e91bba0SGirish Moodalbail 			}
7536e91bba0SGirish Moodalbail 			status = i_ipadm_init_addrobj(iph, nvl);
754a73be61aSHans Rosenfeld 
7556e91bba0SGirish Moodalbail 			/*
7566e91bba0SGirish Moodalbail 			 * If this address is in use on some other interface,
7576e91bba0SGirish Moodalbail 			 * we want to record an error to be returned as
7586e91bba0SGirish Moodalbail 			 * a soft error and continue processing the rest of
7596e91bba0SGirish Moodalbail 			 * the addresses.
7606e91bba0SGirish Moodalbail 			 */
7616e91bba0SGirish Moodalbail 			if (status == IPADM_ADDR_NOTAVAIL) {
7626e91bba0SGirish Moodalbail 				ret_status = IPADM_ALL_ADDRS_NOT_ENABLED;
7636e91bba0SGirish Moodalbail 				status = IPADM_SUCCESS;
7646e91bba0SGirish Moodalbail 			}
765a73be61aSHans Rosenfeld 		} else if (nvlist_exists(nvl, IPADM_NVP_PROTONAME) == B_TRUE) {
7666e91bba0SGirish Moodalbail 			status = i_ipadm_init_ifprop(iph, nvl);
7676e91bba0SGirish Moodalbail 		}
7686e91bba0SGirish Moodalbail 		if (status != IPADM_SUCCESS)
7696e91bba0SGirish Moodalbail 			return (status);
7706e91bba0SGirish Moodalbail 	}
771a73be61aSHans Rosenfeld 	if (move_to_group) {
772a73be61aSHans Rosenfeld 		(void) ipadm_add_ipmp_member(iph, gifname, newifname,
773a73be61aSHans Rosenfeld 		    IPADM_OPT_ACTIVE);
774a73be61aSHans Rosenfeld 	}
775a73be61aSHans Rosenfeld 	if (init_from_gz)
776550b6e40SSowmini Varadhan 		ret_status = ipadm_init_net_from_gz(iph, newifname, NULL);
7776e91bba0SGirish Moodalbail 	return (ret_status);
7786e91bba0SGirish Moodalbail }
7796e91bba0SGirish Moodalbail 
7806e91bba0SGirish Moodalbail /*
7816e91bba0SGirish Moodalbail  * Retrieves the persistent configuration for the given interface(s) in `ifs'
7826e91bba0SGirish Moodalbail  * by contacting the daemon and dumps the information in `allifs'.
7836e91bba0SGirish Moodalbail  */
7846e91bba0SGirish Moodalbail ipadm_status_t
i_ipadm_init_ifs(ipadm_handle_t iph,const char * ifs,nvlist_t ** allifs)7856e91bba0SGirish Moodalbail i_ipadm_init_ifs(ipadm_handle_t iph, const char *ifs, nvlist_t **allifs)
7866e91bba0SGirish Moodalbail {
7876e91bba0SGirish Moodalbail 	nvlist_t		*nvl = NULL;
7886e91bba0SGirish Moodalbail 	size_t			nvlsize, bufsize;
7896e91bba0SGirish Moodalbail 	ipmgmt_initif_arg_t	*iargp;
7906e91bba0SGirish Moodalbail 	char			*buf = NULL, *nvlbuf = NULL;
7916e91bba0SGirish Moodalbail 	ipmgmt_get_rval_t	*rvalp = NULL;
7926e91bba0SGirish Moodalbail 	int			err;
7936e91bba0SGirish Moodalbail 	ipadm_status_t		status = IPADM_SUCCESS;
7946e91bba0SGirish Moodalbail 
795a73be61aSHans Rosenfeld 	status = ipadm_str2nvlist(ifs, &nvl, IPADM_NORVAL);
796a73be61aSHans Rosenfeld 	if (status != IPADM_SUCCESS)
797a73be61aSHans Rosenfeld 		return (status);
7986e91bba0SGirish Moodalbail 
7996e91bba0SGirish Moodalbail 	err = nvlist_pack(nvl, &nvlbuf, &nvlsize, NV_ENCODE_NATIVE, 0);
8006e91bba0SGirish Moodalbail 	if (err != 0) {
8016e91bba0SGirish Moodalbail 		status = ipadm_errno2status(err);
8026e91bba0SGirish Moodalbail 		goto done;
8036e91bba0SGirish Moodalbail 	}
8046e91bba0SGirish Moodalbail 	bufsize = sizeof (*iargp) + nvlsize;
8056e91bba0SGirish Moodalbail 	if ((buf = malloc(bufsize)) == NULL) {
8066e91bba0SGirish Moodalbail 		status = ipadm_errno2status(errno);
8076e91bba0SGirish Moodalbail 		goto done;
8086e91bba0SGirish Moodalbail 	}
8096e91bba0SGirish Moodalbail 
8106e91bba0SGirish Moodalbail 	/* populate the door_call argument structure */
8116e91bba0SGirish Moodalbail 	iargp = (void *)buf;
8126e91bba0SGirish Moodalbail 	iargp->ia_cmd = IPMGMT_CMD_INITIF;
8136e91bba0SGirish Moodalbail 	iargp->ia_flags = 0;
8146e91bba0SGirish Moodalbail 	iargp->ia_family = AF_UNSPEC;
8156e91bba0SGirish Moodalbail 	iargp->ia_nvlsize = nvlsize;
8166e91bba0SGirish Moodalbail 	(void) bcopy(nvlbuf, buf + sizeof (*iargp), nvlsize);
8176e91bba0SGirish Moodalbail 
8186e91bba0SGirish Moodalbail 	if ((rvalp = malloc(sizeof (ipmgmt_get_rval_t))) == NULL) {
8196e91bba0SGirish Moodalbail 		status = ipadm_errno2status(errno);
8206e91bba0SGirish Moodalbail 		goto done;
8216e91bba0SGirish Moodalbail 	}
8226e91bba0SGirish Moodalbail 	if ((err = ipadm_door_call(iph, iargp, bufsize, (void **)&rvalp,
8236e91bba0SGirish Moodalbail 	    sizeof (*rvalp), B_TRUE)) != 0) {
8246e91bba0SGirish Moodalbail 		status = ipadm_errno2status(err);
8256e91bba0SGirish Moodalbail 		goto done;
8266e91bba0SGirish Moodalbail 	}
8276e91bba0SGirish Moodalbail 
8286e91bba0SGirish Moodalbail 	/*
829ad69a334SYuri Pankov 	 * Daemon reply pointed to by rvalp contains ipmgmt_get_rval_t structure
830ad69a334SYuri Pankov 	 * followed by a list of packed nvlists, each of which represents
831ad69a334SYuri Pankov 	 * configuration information for the given interface(s).
8326e91bba0SGirish Moodalbail 	 */
833ad69a334SYuri Pankov 	err = nvlist_unpack((char *)rvalp + sizeof (ipmgmt_get_rval_t),
8340d1087e8SHans Rosenfeld 	    rvalp->ir_nvlsize, allifs, 0);
8356e91bba0SGirish Moodalbail 	if (err != 0)
8366e91bba0SGirish Moodalbail 		status = ipadm_errno2status(err);
8376e91bba0SGirish Moodalbail done:
8386e91bba0SGirish Moodalbail 	nvlist_free(nvl);
8396e91bba0SGirish Moodalbail 	free(buf);
8406e91bba0SGirish Moodalbail 	free(nvlbuf);
8416e91bba0SGirish Moodalbail 	free(rvalp);
8426e91bba0SGirish Moodalbail 	return (status);
8436e91bba0SGirish Moodalbail }
8446e91bba0SGirish Moodalbail 
8456e91bba0SGirish Moodalbail /*
8466e91bba0SGirish Moodalbail  * Returns B_FALSE if
8476e91bba0SGirish Moodalbail  * (1) `ifname' is NULL or has no string or has a string of invalid length
8486e91bba0SGirish Moodalbail  * (2) ifname is a logical interface and IPH_LEGACY is not set, or
8496e91bba0SGirish Moodalbail  */
8506e91bba0SGirish Moodalbail boolean_t
i_ipadm_validate_ifname(ipadm_handle_t iph,const char * ifname)8516e91bba0SGirish Moodalbail i_ipadm_validate_ifname(ipadm_handle_t iph, const char *ifname)
8526e91bba0SGirish Moodalbail {
8536e91bba0SGirish Moodalbail 	ifspec_t ifsp;
8546e91bba0SGirish Moodalbail 
8556e91bba0SGirish Moodalbail 	if (ifname == NULL || ifname[0] == '\0' ||
8566e91bba0SGirish Moodalbail 	    !ifparse_ifspec(ifname, &ifsp))
8576e91bba0SGirish Moodalbail 		return (B_FALSE);
8586e91bba0SGirish Moodalbail 	if (ifsp.ifsp_lunvalid)
8596e91bba0SGirish Moodalbail 		return (ifsp.ifsp_lun > 0 && (iph->iph_flags & IPH_LEGACY));
8606e91bba0SGirish Moodalbail 	return (B_TRUE);
8616e91bba0SGirish Moodalbail }
8626e91bba0SGirish Moodalbail 
8636e91bba0SGirish Moodalbail /*
8646e91bba0SGirish Moodalbail  * Wrapper for sending a non-transparent I_STR ioctl().
8656e91bba0SGirish Moodalbail  * Returns: Result from ioctl().
8666e91bba0SGirish Moodalbail  */
8676e91bba0SGirish Moodalbail int
i_ipadm_strioctl(int s,int cmd,char * buf,int buflen)8686e91bba0SGirish Moodalbail i_ipadm_strioctl(int s, int cmd, char *buf, int buflen)
8696e91bba0SGirish Moodalbail {
8706e91bba0SGirish Moodalbail 	struct strioctl ioc;
8716e91bba0SGirish Moodalbail 
8726e91bba0SGirish Moodalbail 	(void) memset(&ioc, 0, sizeof (ioc));
8736e91bba0SGirish Moodalbail 	ioc.ic_cmd = cmd;
8746e91bba0SGirish Moodalbail 	ioc.ic_timout = 0;
8756e91bba0SGirish Moodalbail 	ioc.ic_len = buflen;
8766e91bba0SGirish Moodalbail 	ioc.ic_dp = buf;
8776e91bba0SGirish Moodalbail 
8786e91bba0SGirish Moodalbail 	return (ioctl(s, I_STR, (char *)&ioc));
8796e91bba0SGirish Moodalbail }
8806e91bba0SGirish Moodalbail 
8816e91bba0SGirish Moodalbail /*
8826e91bba0SGirish Moodalbail  * Make a door call to the server and checks if the door call succeeded or not.
8836e91bba0SGirish Moodalbail  * `is_varsize' specifies that the data returned by ipmgmtd daemon is of
8846e91bba0SGirish Moodalbail  * variable size and door will allocate buffer using mmap(). In such cases
8856e91bba0SGirish Moodalbail  * we re-allocate the required memory,n assign it to `rbufp', copy the data to
8866e91bba0SGirish Moodalbail  * `rbufp' and then call munmap() (see below).
8876e91bba0SGirish Moodalbail  *
8886e91bba0SGirish Moodalbail  * It also checks to see if the server side procedure ran successfully by
8896e91bba0SGirish Moodalbail  * checking for ir_err. Therefore, for some callers who just care about the
8906e91bba0SGirish Moodalbail  * return status can set `rbufp' to NULL and set `rsize' to 0.
8916e91bba0SGirish Moodalbail  */
8926e91bba0SGirish Moodalbail int
ipadm_door_call(ipadm_handle_t iph,void * arg,size_t asize,void ** rbufp,size_t rsize,boolean_t is_varsize)8936e91bba0SGirish Moodalbail ipadm_door_call(ipadm_handle_t iph, void *arg, size_t asize, void **rbufp,
8946e91bba0SGirish Moodalbail     size_t rsize, boolean_t is_varsize)
8956e91bba0SGirish Moodalbail {
8966e91bba0SGirish Moodalbail 	door_arg_t	darg;
8976e91bba0SGirish Moodalbail 	int		err;
8986e91bba0SGirish Moodalbail 	ipmgmt_retval_t	rval, *rvalp;
899f6da83d4SAnurag S. Maskey 	boolean_t	reopen = B_FALSE;
9006e91bba0SGirish Moodalbail 
9016e91bba0SGirish Moodalbail 	if (rbufp == NULL) {
9026e91bba0SGirish Moodalbail 		rvalp = &rval;
9036e91bba0SGirish Moodalbail 		rbufp = (void **)&rvalp;
9046e91bba0SGirish Moodalbail 		rsize = sizeof (rval);
9056e91bba0SGirish Moodalbail 	}
9066e91bba0SGirish Moodalbail 
9076e91bba0SGirish Moodalbail 	darg.data_ptr = arg;
9086e91bba0SGirish Moodalbail 	darg.data_size = asize;
9096e91bba0SGirish Moodalbail 	darg.desc_ptr = NULL;
9106e91bba0SGirish Moodalbail 	darg.desc_num = 0;
9116e91bba0SGirish Moodalbail 	darg.rbuf = *rbufp;
9126e91bba0SGirish Moodalbail 	darg.rsize = rsize;
9136e91bba0SGirish Moodalbail 
914f6da83d4SAnurag S. Maskey reopen:
9156e91bba0SGirish Moodalbail 	(void) pthread_mutex_lock(&iph->iph_lock);
9166e91bba0SGirish Moodalbail 	/* The door descriptor is opened if it isn't already */
9176e91bba0SGirish Moodalbail 	if (iph->iph_door_fd == -1) {
9186e91bba0SGirish Moodalbail 		if ((iph->iph_door_fd = open(IPMGMT_DOOR, O_RDONLY)) < 0) {
9196e91bba0SGirish Moodalbail 			err = errno;
9206e91bba0SGirish Moodalbail 			(void) pthread_mutex_unlock(&iph->iph_lock);
9216e91bba0SGirish Moodalbail 			return (err);
9226e91bba0SGirish Moodalbail 		}
9236e91bba0SGirish Moodalbail 	}
9246e91bba0SGirish Moodalbail 	(void) pthread_mutex_unlock(&iph->iph_lock);
9256e91bba0SGirish Moodalbail 
926f6da83d4SAnurag S. Maskey 	if (door_call(iph->iph_door_fd, &darg) == -1) {
927f6da83d4SAnurag S. Maskey 		/*
928f6da83d4SAnurag S. Maskey 		 * Stale door descriptor is possible if ipmgmtd was restarted
929f6da83d4SAnurag S. Maskey 		 * since last iph_door_fd was opened, so try re-opening door
930f6da83d4SAnurag S. Maskey 		 * descriptor.
931f6da83d4SAnurag S. Maskey 		 */
932f6da83d4SAnurag S. Maskey 		if (!reopen && errno == EBADF) {
933f6da83d4SAnurag S. Maskey 			(void) close(iph->iph_door_fd);
934f6da83d4SAnurag S. Maskey 			iph->iph_door_fd = -1;
935f6da83d4SAnurag S. Maskey 			reopen = B_TRUE;
936f6da83d4SAnurag S. Maskey 			goto reopen;
937f6da83d4SAnurag S. Maskey 		}
9386e91bba0SGirish Moodalbail 		return (errno);
939f6da83d4SAnurag S. Maskey 	}
9406e91bba0SGirish Moodalbail 	err = ((ipmgmt_retval_t *)(void *)(darg.rbuf))->ir_err;
9416e91bba0SGirish Moodalbail 	if (darg.rbuf != *rbufp) {
9426e91bba0SGirish Moodalbail 		/*
9436e91bba0SGirish Moodalbail 		 * if the caller is expecting the result to fit in specified
9446e91bba0SGirish Moodalbail 		 * buffer then return failure.
9456e91bba0SGirish Moodalbail 		 */
9466e91bba0SGirish Moodalbail 		if (!is_varsize)
9476e91bba0SGirish Moodalbail 			err = EBADE;
9486e91bba0SGirish Moodalbail 		/*
9496e91bba0SGirish Moodalbail 		 * The size of the buffer `*rbufp' was not big enough
9506e91bba0SGirish Moodalbail 		 * and the door itself allocated buffer, for us. We will
9516e91bba0SGirish Moodalbail 		 * hit this, on several occasion as for some cases
9526e91bba0SGirish Moodalbail 		 * we cannot predict the size of the return structure.
9536e91bba0SGirish Moodalbail 		 * Reallocate the buffer `*rbufp' and memcpy() the contents
9546e91bba0SGirish Moodalbail 		 * to new buffer.
9556e91bba0SGirish Moodalbail 		 */
9566e91bba0SGirish Moodalbail 		if (err == 0) {
9576e91bba0SGirish Moodalbail 			void *newp;
9586e91bba0SGirish Moodalbail 
9596e91bba0SGirish Moodalbail 			/* allocated memory will be freed by the caller */
9606e91bba0SGirish Moodalbail 			if ((newp = realloc(*rbufp, darg.rsize)) == NULL) {
9616e91bba0SGirish Moodalbail 				err = ENOMEM;
9626e91bba0SGirish Moodalbail 			} else {
9636e91bba0SGirish Moodalbail 				*rbufp = newp;
9646e91bba0SGirish Moodalbail 				(void) memcpy(*rbufp, darg.rbuf, darg.rsize);
9656e91bba0SGirish Moodalbail 			}
9666e91bba0SGirish Moodalbail 		}
9676e91bba0SGirish Moodalbail 		/* munmap() the door buffer */
9686e91bba0SGirish Moodalbail 		(void) munmap(darg.rbuf, darg.rsize);
9696e91bba0SGirish Moodalbail 	} else {
9706e91bba0SGirish Moodalbail 		if (darg.rsize != rsize)
9716e91bba0SGirish Moodalbail 			err = EBADE;
9726e91bba0SGirish Moodalbail 	}
9736e91bba0SGirish Moodalbail 	return (err);
9746e91bba0SGirish Moodalbail }
975b31320a7SChris Fraire 
976a73be61aSHans Rosenfeld /*
977a73be61aSHans Rosenfeld  * A helper that is used by i_ipadm_get_db_addr and i_ipadm_get_db_if
978a73be61aSHans Rosenfeld  * to do a door_call to ipmgmtd, that should return persistent information
979a73be61aSHans Rosenfeld  * about interfaces or/and addresses from ipadm DB
980a73be61aSHans Rosenfeld  */
981a73be61aSHans Rosenfeld ipadm_status_t
i_ipadm_call_ipmgmtd(ipadm_handle_t iph,void * garg,size_t garg_size,nvlist_t ** onvl)982a73be61aSHans Rosenfeld i_ipadm_call_ipmgmtd(ipadm_handle_t iph, void *garg, size_t garg_size,
983a73be61aSHans Rosenfeld     nvlist_t **onvl)
984a73be61aSHans Rosenfeld {
985a73be61aSHans Rosenfeld 	ipmgmt_get_rval_t	*rvalp;
986a73be61aSHans Rosenfeld 	int			err;
987a73be61aSHans Rosenfeld 	size_t			nvlsize;
988a73be61aSHans Rosenfeld 	char			*nvlbuf;
989a73be61aSHans Rosenfeld 
990a73be61aSHans Rosenfeld 	rvalp = malloc(sizeof (ipmgmt_get_rval_t));
991a73be61aSHans Rosenfeld 	if (rvalp == NULL)
992a73be61aSHans Rosenfeld 		return (IPADM_NO_MEMORY);
993a73be61aSHans Rosenfeld 
994a73be61aSHans Rosenfeld 	err = ipadm_door_call(iph, garg, garg_size, (void **)&rvalp,
995a73be61aSHans Rosenfeld 	    sizeof (*rvalp), B_TRUE);
996a73be61aSHans Rosenfeld 	if (err == 0) {
997a73be61aSHans Rosenfeld 		nvlsize = rvalp->ir_nvlsize;
998a73be61aSHans Rosenfeld 		nvlbuf = (char *)rvalp + sizeof (ipmgmt_get_rval_t);
999a73be61aSHans Rosenfeld 		err = nvlist_unpack(nvlbuf, nvlsize, onvl, 0);
1000a73be61aSHans Rosenfeld 	}
1001a73be61aSHans Rosenfeld 	free(rvalp);
1002a73be61aSHans Rosenfeld 
1003a73be61aSHans Rosenfeld 	return (ipadm_errno2status(err));
1004a73be61aSHans Rosenfeld }
1005a73be61aSHans Rosenfeld 
1006b31320a7SChris Fraire /*
1007b31320a7SChris Fraire  * ipadm_is_nil_hostname() : Determine if the `hostname' is nil: i.e.,
1008b31320a7SChris Fraire  *			NULL, empty, or a single space (e.g., as returned by
1009*bbf21555SRichard Lowe  *			domainname(8)/sysinfo).
1010b31320a7SChris Fraire  *
1011b31320a7SChris Fraire  *   input: const char *: the hostname to inspect;
1012b31320a7SChris Fraire  *  output: boolean_t: B_TRUE if `hostname' is not NULL satisfies the
1013b31320a7SChris Fraire  *			criteria above; otherwise, B_FALSE;
1014b31320a7SChris Fraire  */
1015b31320a7SChris Fraire 
1016b31320a7SChris Fraire boolean_t
ipadm_is_nil_hostname(const char * hostname)1017b31320a7SChris Fraire ipadm_is_nil_hostname(const char *hostname)
1018b31320a7SChris Fraire {
1019b31320a7SChris Fraire 	return (hostname == NULL || *hostname == '\0' ||
1020b31320a7SChris Fraire 	    (*hostname == ' ' && hostname[1] == '\0'));
1021b31320a7SChris Fraire }
1022b31320a7SChris Fraire 
1023b31320a7SChris Fraire /*
1024b31320a7SChris Fraire  * ipadm_is_valid_hostname(): check whether a string is a valid hostname
1025b31320a7SChris Fraire  *
1026b31320a7SChris Fraire  *   input: const char *: the string to verify as a hostname
1027b31320a7SChris Fraire  *  output: boolean_t: B_TRUE if the string is a valid hostname
1028b31320a7SChris Fraire  *
1029b31320a7SChris Fraire  * Note that we accept host names beginning with a digit, which is not
1030b31320a7SChris Fraire  * strictly legal according to the RFCs but is in common practice, so we
1031b31320a7SChris Fraire  * endeavour to not break what customers are using.
1032b31320a7SChris Fraire  *
1033b31320a7SChris Fraire  * RFC 1035 limits a wire-format domain name to 255 octets. For a printable
1034b31320a7SChris Fraire  * `hostname' as we have, the limit is therefore 253 characters (excluding
1035b31320a7SChris Fraire  * the terminating '\0'--or 254 characters if the last character of
1036b31320a7SChris Fraire  * `hostname' is a '.'.
1037b31320a7SChris Fraire  *
1038b31320a7SChris Fraire  * Excerpt from section 2.3.1., Preferred name syntax:
1039b31320a7SChris Fraire  *
1040b31320a7SChris Fraire  * <domain> ::= <subdomain> | " "
1041b31320a7SChris Fraire  * <subdomain> ::= <label> | <subdomain> "." <label>
1042b31320a7SChris Fraire  * <label> ::= <letter> [ [ <ldh-str> ] <let-dig> ]
1043b31320a7SChris Fraire  * <ldh-str> ::= <let-dig-hyp> | <let-dig-hyp> <ldh-str>
1044b31320a7SChris Fraire  * <let-dig-hyp> ::= <let-dig> | "-"
1045b31320a7SChris Fraire  * <let-dig> ::= <letter> | <digit>
1046b31320a7SChris Fraire  */
1047b31320a7SChris Fraire boolean_t
ipadm_is_valid_hostname(const char * hostname)1048b31320a7SChris Fraire ipadm_is_valid_hostname(const char *hostname)
1049b31320a7SChris Fraire {
1050b31320a7SChris Fraire 	const size_t MAX_READABLE_NAME_LEN = 253;
1051b31320a7SChris Fraire 	char last_char;
1052b31320a7SChris Fraire 	size_t has_last_dot, namelen, i;
1053b31320a7SChris Fraire 
1054b31320a7SChris Fraire 	if (hostname == NULL)
1055b31320a7SChris Fraire 		return (B_FALSE);
1056b31320a7SChris Fraire 
1057b31320a7SChris Fraire 	namelen = strlen(hostname);
1058b31320a7SChris Fraire 	if (namelen < 1)
1059b31320a7SChris Fraire 		return (B_FALSE);
1060b31320a7SChris Fraire 
1061b31320a7SChris Fraire 	last_char = hostname[namelen - 1];
1062b31320a7SChris Fraire 	has_last_dot = last_char == '.';
1063b31320a7SChris Fraire 
1064b31320a7SChris Fraire 	if (namelen > MAX_READABLE_NAME_LEN + has_last_dot ||
1065b31320a7SChris Fraire 	    last_char == '-')
1066b31320a7SChris Fraire 		return (B_FALSE);
1067b31320a7SChris Fraire 
1068b31320a7SChris Fraire 	for (i = 0; hostname[i] != '\0'; i++) {
1069b31320a7SChris Fraire 		/*
1070b31320a7SChris Fraire 		 * As noted above, this deviates from RFC 1035 in that it
1071b31320a7SChris Fraire 		 * allows a leading digit.
1072b31320a7SChris Fraire 		 */
1073b31320a7SChris Fraire 		if (isalpha(hostname[i]) || isdigit(hostname[i]) ||
1074b31320a7SChris Fraire 		    (((hostname[i] == '-') || (hostname[i] == '.')) && (i > 0)))
1075b31320a7SChris Fraire 			continue;
1076b31320a7SChris Fraire 
1077b31320a7SChris Fraire 		return (B_FALSE);
1078b31320a7SChris Fraire 	}
1079b31320a7SChris Fraire 
1080b31320a7SChris Fraire 	return (B_TRUE);
1081b31320a7SChris Fraire }
1082