libshare/nfs/libshare_nfs.c

/*
 * 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 2007 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#pragma ident	"%Z%%M%	%I%	%E% SMI"

/*
 * NFS specific functions
 */
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <stdlib.h>
#include <unistd.h>
#include <zone.h>
#include <errno.h>
#include <locale.h>
#include <signal.h>
#include "libshare.h"
#include "libshare_impl.h"
#include <nfs/export.h>
#include <pwd.h>
#include <limits.h>
#include <libscf.h>
#include "nfslog_config.h"
#include "nfslogtab.h"
#include "libshare_nfs.h"
#include <rpcsvc/daemon_utils.h>
#include <nfs/nfs.h>

/* should really be in some global place */
#define	DEF_WIN	30000
#define	OPT_CHUNK	1024

int debug = 0;


/* internal functions */
static int nfs_init();
static void nfs_fini();
static int nfs_enable_share(sa_share_t);
static int nfs_disable_share(char *);
static int nfs_validate_property(sa_property_t, sa_optionset_t);
static int nfs_validate_security_mode(char *);
static int nfs_is_security_opt(char *);
static int nfs_parse_legacy_options(sa_group_t, char *);
static char *nfs_format_options(sa_group_t, int);
static int nfs_set_proto_prop(sa_property_t);
static sa_protocol_properties_t nfs_get_proto_set();
static char *nfs_get_status();
static char *nfs_space_alias(char *);

/*
 * ops vector that provides the protocol specific info and operations
 * for share management.
 */

struct sa_plugin_ops sa_plugin_ops = {
	SA_PLUGIN_VERSION,
	"nfs",
	nfs_init,
	nfs_fini,
	nfs_enable_share,
	nfs_disable_share,
	nfs_validate_property,
	nfs_validate_security_mode,
	nfs_is_security_opt,
	nfs_parse_legacy_options,
	nfs_format_options,
	nfs_set_proto_prop,
	nfs_get_proto_set,
	nfs_get_status,
	nfs_space_alias,
	NULL,
	NULL
};

/*
 * list of support services needed
 * defines should come from head/rpcsvc/daemon_utils.h
 */

static char *service_list_default[] =
	{ STATD, LOCKD, MOUNTD, NFSD, NFSMAPID, RQUOTAD, NULL };
static char *service_list_logging[] =
	{ STATD, LOCKD, MOUNTD, NFSD, NFSMAPID, RQUOTAD, NFSLOGD, NULL };

/*
 * option definitions.  Make sure to keep the #define for the option
 * index just before the entry it is the index for. Changing the order
 * can cause breakage.  E.g OPT_RW is index 1 and must precede the
 * line that includes the SHOPT_RW and OPT_RW entries.
 */

struct option_defs optdefs[] = {
#define	OPT_RO		0
	{SHOPT_RO, OPT_RO, OPT_TYPE_ACCLIST},
#define	OPT_RW		1
	{SHOPT_RW, OPT_RW, OPT_TYPE_ACCLIST},
#define	OPT_ROOT	2
	{SHOPT_ROOT, OPT_ROOT, OPT_TYPE_ACCLIST},
#define	OPT_SECURE	3
	{SHOPT_SECURE, OPT_SECURE, OPT_TYPE_DEPRECATED},
#define	OPT_ANON	4
	{SHOPT_ANON, OPT_ANON, OPT_TYPE_USER},
#define	OPT_WINDOW	5
	{SHOPT_WINDOW, OPT_WINDOW, OPT_TYPE_NUMBER},
#define	OPT_NOSUID	6
	{SHOPT_NOSUID, OPT_NOSUID, OPT_TYPE_BOOLEAN},
#define	OPT_ACLOK	7
	{SHOPT_ACLOK, OPT_ACLOK, OPT_TYPE_BOOLEAN},
#define	OPT_NOSUB	8
	{SHOPT_NOSUB, OPT_NOSUB, OPT_TYPE_BOOLEAN},
#define	OPT_SEC		9
	{SHOPT_SEC, OPT_SEC, OPT_TYPE_SECURITY},
#define	OPT_PUBLIC	10
	{SHOPT_PUBLIC, OPT_PUBLIC, OPT_TYPE_BOOLEAN, OPT_SHARE_ONLY},
#define	OPT_INDEX	11
	{SHOPT_INDEX, OPT_INDEX, OPT_TYPE_FILE},
#define	OPT_LOG		12
	{SHOPT_LOG, OPT_LOG, OPT_TYPE_LOGTAG},
#define	OPT_CKSUM	13
	{SHOPT_CKSUM, OPT_CKSUM, OPT_TYPE_STRINGSET},
#ifdef VOLATILE_FH_TEST	/* XXX added for testing volatile fh's only */
#define	OPT_VOLFH	14
	{SHOPT_VOLFH, OPT_VOLFH},
#endif /* VOLATILE_FH_TEST */
	NULL
};

/*
 * list of properties that are related to security flavors.
 */
static char *seclist[] = {
	SHOPT_RO,
	SHOPT_RW,
	SHOPT_ROOT,
	SHOPT_WINDOW,
	NULL
};

/* structure for list of securities */
struct securities {
	sa_security_t security;
	struct securities *next;
};

/*
 * findopt(name)
 *
 * Lookup option "name" in the option table and return the table
 * index.
 */

static int
findopt(char *name)
{
	int i;
	if (name != NULL) {
	    for (i = 0; optdefs[i].tag != NULL; i++) {
		if (strcmp(optdefs[i].tag, name) == 0)
		    return (i);
	    }
	}
	return (-1);
}

/*
 * gettype(name)
 *
 * Return the type of option "name".
 */

static int
gettype(char *name)
{
	int optdef;

	optdef = findopt(name);
	if (optdef != -1)
	    return (optdefs[optdef].type);
	return (OPT_TYPE_ANY);
}

/*
 * nfs_validate_security_mode(mode)
 *
 * is the specified mode string a valid one for use with NFS?
 */

static int
nfs_validate_security_mode(char *mode)
{
	seconfig_t secinfo;
	int err;

	(void) memset(&secinfo, '\0', sizeof (secinfo));
	err = nfs_getseconfig_byname(mode, &secinfo);
	if (err == SC_NOERROR)
	    return (1);
	return (0);
}

/*
 * nfs_is_security_opt(tok)
 *
 * check to see if tok represents an option that is only valid in some
 * security flavor.
 */

static int
nfs_is_security_opt(char *tok)
{
	int i;

	for (i = 0; seclist[i] != NULL; i++) {
	    if (strcmp(tok, seclist[i]) == 0)
		return (1);
	}
	return (0);
}

/*
 * find_security(seclist, sec)
 *
 * Walk the current list of security flavors and return true if it is
 * present, else return false.
 */

static int
find_security(struct securities *seclist, sa_security_t sec)
{
	while (seclist != NULL) {
	    if (seclist->security == sec)
		return (1);
	    seclist = seclist->next;
	}
	return (0);
}

/*
 * make_security_list(group, securitymodes, proto)
 *	go through the list of securitymodes and add them to the
 *	group's list of security optionsets. We also keep a list of
 *	those optionsets so we don't have to find them later. All of
 *	these will get copies of the same properties.
 */

static struct securities *
make_security_list(sa_group_t group, char *securitymodes, char *proto)
{
	char *tok, *next = NULL;
	struct securities *curp, *headp = NULL, *prev;
	sa_security_t check;
	int freetok = 0;

	for (tok = securitymodes; tok != NULL; tok = next) {
	    next = strchr(tok, ':');
	    if (next != NULL)
		*next++ = '\0';
	    if (strcmp(tok, "default") == 0) {
		/* resolve default into the real type */
		tok = nfs_space_alias(tok);
		freetok = 1;
	    }
	    check = sa_get_security(group, tok, proto);

	    /* add to the security list if it isn't there already */
	    if (check == NULL || !find_security(headp, check)) {
		curp = (struct securities *)calloc(1,
						sizeof (struct securities));
		if (curp != NULL) {
		    if (check == NULL) {
			curp->security = sa_create_security(group, tok,
								proto);
		    } else {
			curp->security = check;
		    }
			/*
			 * note that the first time through the loop,
			 * headp will be NULL and prev will be
			 * undefined.  Since headp is NULL, we set
			 * both it and prev to the curp (first
			 * structure to be allocated).
			 *
			 * later passes through the loop will have
			 * headp not being NULL and prev will be used
			 * to allocate at the end of the list.
			 */
		    if (headp == NULL) {
			headp = curp;
			prev = curp;
		    } else {
			prev->next = curp;
			prev = curp;
		    }
		}
	    }

	    if (freetok) {
		freetok = 0;
		sa_free_attr_string(tok);
	    }
	}
	return (headp);
}

static void
free_security_list(struct securities *sec)
{
	struct securities *next;
	if (sec != NULL) {
	    for (next = sec->next; sec != NULL; sec = next) {
		next = sec->next;
		free(sec);
	    }
	}
}

/*
 * nfs_alistcat(str1, str2, sep)
 *
 * concatenate str1 and str2 into a new string using sep as a separate
 * character. If memory allocation fails, return NULL;
 */

static char *
nfs_alistcat(char *str1, char *str2, char sep)
{
	char *newstr;
	size_t len;

	len = strlen(str1) + strlen(str2) + 2;
	newstr = (char *)malloc(len);
	if (newstr != NULL)
	    (void) snprintf(newstr, len, "%s%c%s", str1, sep, str2);
	return (newstr);
}

/*
 * add_security_prop(sec, name, value, persist)
 *
 * Add the property to the securities structure. This accumulates
 * properties for as part of parsing legacy options.
 */

static int
add_security_prop(struct securities *sec, char *name, char *value,
			int persist, int iszfs)
{
	sa_property_t prop;
	int ret = SA_OK;

	for (; sec != NULL; sec = sec->next) {
	    if (value == NULL) {
		if (strcmp(name, SHOPT_RW) == 0 || strcmp(name, SHOPT_RO) == 0)
		    value = "*";
		else
		    value = "true";
	    }

		/*
		 * Get the existing property, if it exists, so we can
		 * determine what to do with it. The ro/rw/root
		 * properties can be merged if multiple instances of
		 * these properies are given. For example, if "rw"
		 * exists with a value "host1" and a later token of
		 * rw="host2" is seen, the values are merged into a
		 * single rw="host1:host2".
		 */
	    prop = sa_get_property(sec->security, name);

	    if (prop != NULL) {
		char *oldvalue;
		char *newvalue;

		/*
		 * The security options of ro/rw/root might appear
		 * multiple times. If they do, the values need to be
		 * merged into an access list. If it was previously
		 * empty, the new value alone is added.
		 */
		oldvalue = sa_get_property_attr(prop, "value");
		if (oldvalue != NULL) {
			/*
			 * The general case is to concatenate the new
			 * value onto the old value for multiple
			 * rw(ro/root) properties. A special case
			 * exists when either the old or new is the
			 * "all" case. In the special case, if both
			 * are "all", then it is "all", else if one is
			 * an access-list, that replaces the "all".
			 */
		    if (strcmp(oldvalue, "*") == 0) {
			/* Replace old value with new value. */
			newvalue = strdup(value);
		    } else if (strcmp(value, "*") == 0) {
			/* Keep old value and ignore the new value. */
			newvalue = NULL;
		    } else {
			/* Make a new list of old plus new access-list. */
			newvalue = nfs_alistcat(oldvalue, value, ':');
		    }

		    if (newvalue != NULL) {
			(void) sa_remove_property(prop);
			prop = sa_create_property(name, newvalue);
			ret = sa_add_property(sec->security, prop);
			free(newvalue);
		    }
		    if (oldvalue != NULL)
			sa_free_attr_string(oldvalue);
		}
	    } else {
		prop = sa_create_property(name, value);
		ret = sa_add_property(sec->security, prop);
	    }
	    if (ret == SA_OK && !iszfs) {
		ret = sa_commit_properties(sec->security, !persist);
	    }
	}
	return (ret);
}

/*
 * check to see if group/share is persistent.
 */
static int
is_persistent(sa_group_t group)
{
	char *type;
	int persist = 1;

	type = sa_get_group_attr(group, "type");
	if (type != NULL && strcmp(type, "persist") != 0)
	    persist = 0;
	if (type != NULL)
	    sa_free_attr_string(type);
	return (persist);
}

/*
 * invalid_security(options)
 *
 * search option string for any invalid sec= type.
 * return true (1) if any are not valid else false (0)
 */
static int
invalid_security(char *options)
{
	char *copy, *base, *token, *value;
	int ret = 0;

	copy = strdup(options);
	token = base = copy;
	while (token != NULL && ret == 0) {
	    token = strtok(base, ",");
	    base = NULL;
	    if (token != NULL) {
		value = strchr(token, '=');
		if (value != NULL)
		    *value++ = '\0';
		if (strcmp(token, "sec") == 0) {
		    /* have security flavors so check them */
		    char *tok, *next;
		    for (next = NULL, tok = value; tok != NULL; tok = next) {
			next = strchr(tok, ':');
			if (next != NULL)
			    *next++ = '\0';
			ret = !nfs_validate_security_mode(tok);
			if (ret)
			    break;
		    }
		}
	    }
	}
	if (copy != NULL)
	    free(copy);
	return (ret);
}

/*
 * nfs_parse_legacy_options(group, options)
 *
 * Parse the old style options into internal format and store on the
 * specified group.  Group could be a share for full legacy support.
 */

static int
nfs_parse_legacy_options(sa_group_t group, char *options)
{
	char *dup = strdup(options);
	char *base;
	char *token;
	sa_optionset_t optionset;
	struct securities *security_list = NULL;
	sa_property_t prop;
	int ret = SA_OK;
	int iszfs = 0;
	sa_group_t parent;
	int persist = 0;
	char *lasts;

	/* do we have an existing optionset? */
	optionset = sa_get_optionset(group, "nfs");
	if (optionset == NULL) {
	    /* didn't find existing optionset so create one */
	    optionset = sa_create_optionset(group, "nfs");
	} else {
		/*
		 * have an existing optionset so we need to compare
		 * options in order to detect errors. For now, we
		 * assume that the first optionset is the correct one
		 * and the others will be the same. This needs to be
		 * fixed before the final code is ready.
		 */
	    return (ret);
	}

	if (strcmp(options, SHOPT_RW) == 0) {
		/*
		 * there is a special case of only the option "rw"
		 * being the default option. We don't have to do
		 * anything.
		 */
	    return (ret);
	}

	/*
	 * check if security types are present and validate them. If
	 * any are not legal, fail.
	 */

	if (invalid_security(options)) {
	    return (SA_INVALID_SECURITY);
	}

	/*
	 * in order to not attempt to change ZFS properties unless
	 * absolutely necessary, we never do it in the legacy parsing.
	 */
	if (sa_is_share(group)) {
	    char *zfs;
	    parent = sa_get_parent_group(group);
	    if (parent != NULL) {
		zfs = sa_get_group_attr(parent, "zfs");
		if (zfs != NULL) {
		    sa_free_attr_string(zfs);
		    iszfs++;
		}
	    }
	} else {
	    iszfs = sa_group_is_zfs(group);
	}

	/*
	 * we need to step through each option in the string and then
	 * add either the option or the security option as needed. If
	 * this is not a persistent share, don't commit to the
	 * repository. If there is an error, we also want to abort the
	 * processing and report it.
	 */
	persist = is_persistent(group);
	base = dup;
	token = dup;
	lasts = NULL;
	while (token != NULL && ret == SA_OK) {
	    ret = SA_OK;
	    token = strtok_r(base, ",", &lasts);
	    base = NULL;
	    if (token != NULL) {
		char *value;
		/*
		 * if the option has a value, it will have an '=' to
		 * separate the name from the value. The following
		 * code will result in value != NULL and token
		 * pointing to just the name if there is a value.
		 */
		value = strchr(token, '=');
		if (value != NULL) {
		    *value++ = '\0';
		}
		if (strcmp(token, "sec") == 0 || strcmp(token, "secure") == 0) {
			/*
			 * Once in security parsing, we only
			 * do security. We do need to move
			 * between the security node and the
			 * toplevel. The security tag goes on
			 * the root while the following ones
			 * go on the security.
			 */
		    if (security_list != NULL) {
			/* have an old list so close it and start the new */
			free_security_list(security_list);
		    }
		    if (strcmp(token, "secure") == 0) {
			value = "dh";
		    } else {
			if (value == NULL) {
			    ret = SA_SYNTAX_ERR;
			    break;
			}
		    }
		    security_list = make_security_list(group, value, "nfs");
		} else {
			/*
			 * Note that the "old" syntax allowed a
			 * default security model This must be
			 * accounted for and internally converted to
			 * "standard" security structure.
			 */
		    if (nfs_is_security_opt(token)) {
			if (security_list == NULL) {
				/*
				 * need to have a security option. This
				 * will be "closed" when a defined "sec="
				 * option is seen. This is technically an
				 * error but will be allowed with warning.
				 */
			    security_list = make_security_list(group,
								"default",
								"nfs");
			}
			if (security_list != NULL) {
			    ret = add_security_prop(security_list, token,
							value, persist,
							iszfs);
			} else {
			    ret = SA_NO_MEMORY;
			}
		    } else {
			/* regular options */
			if (value == NULL) {
			    if (strcmp(token, SHOPT_RW) == 0 ||
				strcmp(token, SHOPT_RO) == 0)
				value = "*";
			    else if (strcmp(token, SHOPT_LOG) == 0)
				value = "global";
			    else
				value = "true";
			}
			prop = sa_create_property(token, value);
			ret = sa_add_property(optionset, prop);
			if (ret != SA_OK) {
			    break;
			}
			if (!iszfs) {
			    ret = sa_commit_properties(optionset, !persist);
			}
		    }
		}
	    }
	}
	if (security_list != NULL)
	    free_security_list(security_list);
	if (dup != NULL)
	    free(dup);
	return (ret);
}

/*
 * is_a_number(number)
 *
 * is the string a number in one of the forms we want to use?
 */

static int
is_a_number(char *number)
{
	int ret = 1;
	int hex = 0;

	if (strncmp(number, "0x", 2) == 0) {
	    number += 2;
	    hex = 1;
	} else if (*number == '-')
	    number++; /* skip the minus */

	while (ret == 1 && *number != '\0') {
	    if (hex) {
		ret = isxdigit(*number++);
	    } else {
		ret = isdigit(*number++);
	    }
	}
	return (ret);
}

/*
 * Look for the specified tag in the configuration file. If it is found,
 * enable logging and set the logging configuration information for exp.
 */
static void
configlog(struct exportdata *exp, char *tag)
{
	nfsl_config_t *configlist = NULL, *configp;
	int error = 0;
	char globaltag[] = DEFAULTTAG;

	/*
	 * Sends config errors to stderr
	 */
	nfsl_errs_to_syslog = B_FALSE;

	/*
	 * get the list of configuration settings
	 */
	error = nfsl_getconfig_list(&configlist);
	if (error) {
		(void) fprintf(stderr,
				dgettext(TEXT_DOMAIN,
					"Cannot get log configuration: %s\n"),
				strerror(error));
	}

	if (tag == NULL)
		tag = globaltag;
	if ((configp = nfsl_findconfig(configlist, tag, &error)) == NULL) {
		nfsl_freeconfig_list(&configlist);
		(void) fprintf(stderr,
				dgettext(TEXT_DOMAIN,
					"No tags matching \"%s\"\n"), tag);
		/* bad configuration */
		error = ENOENT;
		goto err;
	}

	if ((exp->ex_tag = strdup(tag)) == NULL) {
		error = ENOMEM;
		goto out;
	}
	if ((exp->ex_log_buffer = strdup(configp->nc_bufferpath)) == NULL) {
		error = ENOMEM;
		goto out;
	}
	exp->ex_flags |= EX_LOG;
	if (configp->nc_rpclogpath != NULL)
		exp->ex_flags |= EX_LOG_ALLOPS;
out:
	if (configlist != NULL)
	    nfsl_freeconfig_list(&configlist);

err:
	if (error != 0) {
		if (exp->ex_flags != NULL)
			free(exp->ex_tag);
		if (exp->ex_log_buffer != NULL)
			free(exp->ex_log_buffer);
		(void) fprintf(stderr,
				dgettext(TEXT_DOMAIN,
					"Cannot set log configuration: %s\n"),
				strerror(error));
	}
}

/*
 * fill_export_from_optionset(export, optionset)
 *
 * In order to share, we need to set all the possible general options
 * into the export structure. Share info will be filled in by the
 * caller. Various property values get turned into structure specific
 * values.
 */

static int
fill_export_from_optionset(struct exportdata *export, sa_optionset_t optionset)
{
	sa_property_t option;
	int ret = SA_OK;

	for (option = sa_get_property(optionset, NULL);
		option != NULL; option = sa_get_next_property(option)) {
	    char *name;
	    char *value;
	    uint32_t val;

	/*
	 * since options may be set/reset multiple times, always do an
	 * explicit set or clear of the option. This allows defaults
	 * to be set and then the protocol specifici to override.
	 */

	    name = sa_get_property_attr(option, "type");
	    value = sa_get_property_attr(option, "value");
	    switch (findopt(name)) {
	    case OPT_ANON:
		if (value != NULL && is_a_number(value)) {
		    val = strtoul(value, NULL, 0);
		} else {
		    struct passwd *pw;
		    pw = getpwnam(value != NULL ? value : "nobody");
		    if (pw != NULL) {
			val = pw->pw_uid;
		    } else {
			val = UID_NOBODY;
		    }
		    endpwent();
		}
		export->ex_anon = val;
		break;
	    case OPT_NOSUID:
		if (value != NULL &&
		    (strcasecmp(value, "true") == 0 || strcmp(value, "1") == 0))
		    export->ex_flags |= EX_NOSUID;
		else
		    export->ex_flags &= ~EX_NOSUID;
		break;
	    case OPT_ACLOK:
		if (value != NULL &&
		    (strcasecmp(value, "true") == 0 ||
			strcmp(value, "1") == 0))
		    export->ex_flags |= EX_ACLOK;
		else
		    export->ex_flags &= ~EX_ACLOK;
		break;
	    case OPT_NOSUB:
		if (value != NULL &&
		    (strcasecmp(value, "true") == 0 || strcmp(value, "1") == 0))
		    export->ex_flags |= EX_NOSUB;
		else
		    export->ex_flags &= ~EX_NOSUB;
		break;
	    case OPT_PUBLIC:
		if (value != NULL &&
		    (strcasecmp(value, "true") == 0 || strcmp(value, "1") == 0))
		    export->ex_flags |= EX_PUBLIC;
		else
		    export->ex_flags &= ~EX_PUBLIC;
		break;
	    case OPT_INDEX:
		if (value != NULL &&
		    (strcmp(value, "..") == 0 || strchr(value, '/') != NULL)) {
		    /* this is an error */
		    (void) printf(dgettext(TEXT_DOMAIN,
					    "NFS: index=\"%s\" not valid;"
					    "must be a filename.\n"),
			    value);
		    break;
		}
		if (value != NULL && *value != '\0' &&
			strcmp(value, ".") != 0) {
		    /* valid index file string */
		    if (export->ex_index != NULL) {
			/* left over from "default" */
			free(export->ex_index);
		    }
		    export->ex_index = strdup(value); /* remember to free */
		    if (export->ex_index == NULL) {
			(void) printf(dgettext(TEXT_DOMAIN,
						"NFS: out of memory setting "
						"index property\n"));
			break;
		    }
		    export->ex_flags |= EX_INDEX;
		}
		break;
	    case OPT_LOG:
		if (value == NULL)
		    value = strdup("global");
		if (value != NULL)
		    configlog(export, strlen(value) ? value : "global");
		break;
	    case OPT_CKSUM:
		/* TBD: not ready yet */
		break;
	    default:
		/* have a syntactic error */
		(void) printf(dgettext(TEXT_DOMAIN,
					"NFS: unrecognized option %s=%s\n"),
			name, value != NULL ? value : "");
		break;
	    }
	    if (name != NULL)
		sa_free_attr_string(name);
	    if (value != NULL)
		sa_free_attr_string(value);
	}
	return (ret);
}

/*
 * cleanup_export(export)
 *
 * Cleanup the allocated areas so we don't leak memory
 */

static void
cleanup_export(struct exportdata *export)
{
	int i;

	if (export->ex_index != NULL)
	    free(export->ex_index);
	if (export->ex_secinfo != NULL) {
	    for (i = 0; i < export->ex_seccnt; i++)
		if (export->ex_secinfo[i].s_rootnames != NULL) {
		    free(export->ex_secinfo[i].s_rootnames);
		}
	    free(export->ex_secinfo);
	}
}

/*
 * Given a seconfig entry and a colon-separated
 * list of names, allocate an array big enough
 * to hold the root list, then convert each name to
 * a principal name according to the security
 * info and assign it to an array element.
 * Return the array and its size.
 */
static caddr_t *
get_rootnames(seconfig_t *sec, char *list, int *count)
{
	caddr_t *a;
	int c, i;
	char *host, *p;

	/*
	 * Count the number of strings in the list.
	 * This is the number of colon separators + 1.
	 */
	c = 1;
	for (p = list; *p; p++)
		if (*p == ':')
			c++;
	*count = c;

	a = (caddr_t *)malloc(c * sizeof (char *));
	if (a == NULL) {
		(void) printf(dgettext(TEXT_DOMAIN,
					"get_rootnames: no memory\n"));
	} else {
	    for (i = 0; i < c; i++) {
		host = strtok(list, ":");
		if (!nfs_get_root_principal(sec, host, &a[i])) {
		    free(a);
		    a = NULL;
		    break;
		}
		list = NULL;
	    }
	}

	return (a);
}

/*
 * fill_security_from_secopts(sp, secopts)
 *
 * Fill the secinfo structure from the secopts optionset.
 */

static int
fill_security_from_secopts(struct secinfo *sp, sa_security_t secopts)
{
	sa_property_t prop;
	char *type;
	int longform;
	int err = SC_NOERROR;

	type = sa_get_security_attr(secopts, "sectype");
	if (type != NULL) {
	    /* named security type needs secinfo to be filled in */
	    err = nfs_getseconfig_byname(type, &sp->s_secinfo);
	    sa_free_attr_string(type);
	    if (err != SC_NOERROR)
		return (err);
	} else {
	    /* default case */
	    err = nfs_getseconfig_default(&sp->s_secinfo);
	    if (err != SC_NOERROR)
		return (err);
	}

	err = SA_OK;
	for (prop = sa_get_property(secopts, NULL);
		prop != NULL && err == SA_OK;
		prop = sa_get_next_property(prop)) {
	    char *name;
	    char *value;

	    name = sa_get_property_attr(prop, "type");
	    value = sa_get_property_attr(prop, "value");

	    longform = value != NULL && strcmp(value, "*") != 0;

	    switch (findopt(name)) {
	    case OPT_RO:
		sp->s_flags |= longform ? M_ROL : M_RO;
		break;
	    case OPT_RW:
		sp->s_flags |= longform ? M_RWL : M_RW;
		break;
	    case OPT_ROOT:
		sp->s_flags |= M_ROOT;
		/*
		 * if we are using AUTH_UNIX, handle like other things
		 * such as RO/RW
		 */
		if (sp->s_secinfo.sc_rpcnum == AUTH_UNIX)
		    continue;
		/* not AUTH_UNIX */
		if (value != NULL) {
		    sp->s_rootnames = get_rootnames(&sp->s_secinfo, value,
							&sp->s_rootcnt);
		    if (sp->s_rootnames == NULL) {
			err = SA_BAD_VALUE;
			(void) fprintf(stderr, dgettext(TEXT_DOMAIN,
							"Bad root list\n"));
		    }
		}
		break;
	    case OPT_WINDOW:
		if (value != NULL) {
		    sp->s_window = atoi(value);
		    if (sp->s_window < 0)
			sp->s_window = DEF_WIN; /* just in case */
		}
		break;
	    default:
		break;
	    }
	    if (name != NULL)
		sa_free_attr_string(name);
	    if (value != NULL)
		sa_free_attr_string(value);
	}
	/* if rw/ro options not set, use default of RW */
	if ((sp->s_flags & NFS_RWMODES) == 0)
	    sp->s_flags |= M_RW;
	return (err);
}

/*
 * This is for testing only
 * It displays the export structure that
 * goes into the kernel.
 */
static void
printarg(char *path, struct exportdata *ep)
{
	int i, j;
	struct secinfo *sp;

	if (debug == 0)
	    return;

	(void) printf("%s:\n", path);
	(void) printf("\tex_version = %d\n", ep->ex_version);
	(void) printf("\tex_path = %s\n", ep->ex_path);
	(void) printf("\tex_pathlen = %ld\n", (ulong_t)ep->ex_pathlen);
	(void) printf("\tex_flags: (0x%02x) ", ep->ex_flags);
	if (ep->ex_flags & EX_NOSUID)
		(void) printf("NOSUID ");
	if (ep->ex_flags & EX_ACLOK)
		(void) printf("ACLOK ");
	if (ep->ex_flags & EX_PUBLIC)
		(void) printf("PUBLIC ");
	if (ep->ex_flags & EX_NOSUB)
		(void) printf("NOSUB ");
	if (ep->ex_flags & EX_LOG)
		(void) printf("LOG ");
	if (ep->ex_flags & EX_LOG_ALLOPS)
		(void) printf("LOG_ALLOPS ");
	if (ep->ex_flags == 0)
		(void) printf("(none)");
	(void) 	printf("\n");
	if (ep->ex_flags & EX_LOG) {
		(void) printf("\tex_log_buffer = %s\n",
			(ep->ex_log_buffer ? ep->ex_log_buffer : "(NULL)"));
		(void) printf("\tex_tag = %s\n",
				(ep->ex_tag ? ep->ex_tag : "(NULL)"));
	}
	(void) printf("\tex_anon = %d\n", ep->ex_anon);
	(void) printf("\tex_seccnt = %d\n", ep->ex_seccnt);
	(void) printf("\n");
	for (i = 0; i < ep->ex_seccnt; i++) {
		sp = &ep->ex_secinfo[i];
		(void) printf("\t\ts_secinfo = %s\n", sp->s_secinfo.sc_name);
		(void) printf("\t\ts_flags: (0x%02x) ", sp->s_flags);
		if (sp->s_flags & M_ROOT) (void) printf("M_ROOT ");
		if (sp->s_flags & M_RO) (void) printf("M_RO ");
		if (sp->s_flags & M_ROL) (void) printf("M_ROL ");
		if (sp->s_flags & M_RW) (void) printf("M_RW ");
		if (sp->s_flags & M_RWL) (void) printf("M_RWL ");
		if (sp->s_flags == 0) (void) printf("(none)");
		(void) printf("\n");
		(void) printf("\t\ts_window = %d\n", sp->s_window);
		(void) printf("\t\ts_rootcnt = %d ", sp->s_rootcnt);
		(void) fflush(stdout);
		for (j = 0; j < sp->s_rootcnt; j++)
			(void) printf("%s ", sp->s_rootnames[j] ?
					sp->s_rootnames[j] : "<null>");
		(void) printf("\n\n");
	}
}

/*
 * count_security(opts)
 *
 * Count the number of security types (flavors). The optionset has
 * been populated with the security flavors as a holding mechanism.
 * We later use this number to allocate data structures.
 */

static int
count_security(sa_optionset_t opts)
{
	int count = 0;
	sa_property_t prop;
	if (opts != NULL) {
	    for (prop = sa_get_property(opts, NULL); prop != NULL;
		prop = sa_get_next_property(prop)) {
		count++;
	    }
	}
	return (count);
}

/*
 * nfs_sprint_option(rbuff, rbuffsize, incr, prop, sep)
 *
 * provides a mechanism to format NFS properties into legacy output
 * format. If the buffer would overflow, it is reallocated and grown
 * as appropriate. Special cases of converting internal form of values
 * to those used by "share" are done. this function does one property
 * at a time.
 */

static void
nfs_sprint_option(char **rbuff, size_t *rbuffsize, size_t incr,
			sa_property_t prop, int sep)
{
	char *name;
	char *value;
	int curlen;
	char *buff = *rbuff;
	size_t buffsize = *rbuffsize;

	name = sa_get_property_attr(prop, "type");
	value = sa_get_property_attr(prop, "value");
	if (buff != NULL)
	    curlen = strlen(buff);
	else
	    curlen = 0;
	if (name != NULL) {
	    int len;
	    len = strlen(name) + sep;

		/*
		 * A future RFE would be to replace this with more
		 * generic code and to possibly handle more types.
		 */
	    switch (gettype(name)) {
	    case OPT_TYPE_BOOLEAN:
		if (value != NULL && strcasecmp(value, "false") == 0) {
		    *name = '\0';
		}
		if (value != NULL)
		    sa_free_attr_string(value);
		value = NULL;
		break;
	    case OPT_TYPE_ACCLIST:
		if (value != NULL && strcmp(value, "*") == 0) {
		    sa_free_attr_string(value);
		    value = NULL;
		} else {
		    if (value != NULL)
			len += 1 + strlen(value);
		}
		break;
	    case OPT_TYPE_LOGTAG:
		if (value != NULL && strlen(value) == 0) {
		    sa_free_attr_string(value);
		    value = NULL;
		} else {
		    if (value != NULL)
			len += 1 + strlen(value);
		}
		break;
	    default:
		if (value != NULL)
		    len += 1 + strlen(value);
		break;
	    }
	    while (buffsize <= (curlen + len)) {
		/* need more room */
		buffsize += incr;
		buff = realloc(buff, buffsize);
		if (buff == NULL) {
		    /* realloc failed so free everything */
		    if (*rbuff != NULL)
			free(*rbuff);
		}
		*rbuff = buff;
		*rbuffsize = buffsize;
		if (buff == NULL) {
		    return;
		}
	    }
	    if (buff == NULL)
		return;
	    if (value == NULL)
		(void) snprintf(buff + curlen, buffsize - curlen,
				"%s%s", sep ? "," : "",
				name, value != NULL ? value : "");
	    else
		(void) snprintf(buff + curlen, buffsize - curlen,
				"%s%s=%s", sep ? "," : "",
				name, value != NULL ? value : "");
	}
	if (name != NULL)
	    sa_free_attr_string(name);
	if (value != NULL)
	    sa_free_attr_string(value);
}

/*
 * nfs_format_options(group, hier)
 *
 * format all the options on the group into an old-style option
 * string. If hier is non-zero, walk up the tree to get inherited
 * options.
 */

static char *
nfs_format_options(sa_group_t group, int hier)
{
	sa_optionset_t options = NULL;
	sa_optionset_t secoptions;
	sa_property_t prop, secprop;
	sa_security_t security;
	char *buff;
	size_t buffsize;

	options = sa_get_derived_optionset(group, "nfs", hier);

	/*
	 * have a an optionset relative to this item, if any. format
	 * these then add any security definitions.
	 */
	buff = malloc(OPT_CHUNK);
	if (buff != NULL) {
	    int sep = 0;
	    buff[0] = '\0';
	    buffsize = OPT_CHUNK;
		/*
		 * do the default set first but skip any option that is also
		 * in the protocol specific optionset.
		 */
	    if (options != NULL) {
		for (prop = sa_get_property(options, NULL); prop != NULL;
			prop = sa_get_next_property(prop)) {
			/*
			 * use this one since we skipped any of these that
			 * were also in optdefault
			 */
		    nfs_sprint_option(&buff, &buffsize, OPT_CHUNK, prop, sep);
		    if (buff == NULL) {
			/*
			 * buff could become NULL if there isn't
			 * enough memory for nfs_sprint_option to
			 * realloc() as necessary. We can't really do
			 * anything about it at this point so we
			 * return NULL.  The caller should handle the
			 * failure. Note that this
			 */
			return (buff);
		    }
		    sep = 1;
		}
	    }
	    secoptions = (sa_optionset_t)sa_get_all_security_types(group,
								"nfs", hier);
	    if (secoptions != NULL) {
		for (secprop = sa_get_property(secoptions, NULL);
		    secprop != NULL; secprop = sa_get_next_property(secprop)) {
		    char *sectype;

		    sectype = sa_get_property_attr(secprop, "type");
		    security = (sa_security_t)sa_get_derived_security(group,
								sectype,
								"nfs", hier);
		    if (security != NULL) {
			if (sectype != NULL) {
			    prop = sa_create_property("sec", sectype);
			    nfs_sprint_option(&buff, &buffsize, OPT_CHUNK,
						prop, sep);
			    (void) sa_remove_property(prop);
			sep = 1;
			}
			for (prop = sa_get_property(security, NULL);
			    prop != NULL;
			    prop = sa_get_next_property(prop)) {

			    nfs_sprint_option(&buff, &buffsize, OPT_CHUNK,
						prop, sep);
			    if (buff == NULL) {
				/* catastrophic memory failure */
				sa_free_derived_optionset(secoptions);
				if (security != NULL)
				    sa_free_derived_optionset(security);
				if (sectype != NULL)
				    sa_free_attr_string(sectype);
				if (options != NULL)
				    sa_free_derived_optionset(options);
				return (buff);
			    }
			    sep = 1;
			}
			sa_free_derived_optionset(security);
		    }
		    if (sectype != NULL)
			sa_free_attr_string(sectype);
		}
		sa_free_derived_optionset(secoptions);
	    }
	}
	if (options != NULL)
	    sa_free_derived_optionset(options);
	return (buff);
}
/*
 * Append an entry to the nfslogtab file
 */
static int
nfslogtab_add(dir, buffer, tag)
	char *dir, *buffer, *tag;
{
	FILE *f;
	struct logtab_ent lep;
	int error = 0;

	/*
	 * Open the file for update and create it if necessary.
	 * This may leave the I/O offset at the end of the file,
	 * so rewind back to the beginning of the file.
	 */
	f = fopen(NFSLOGTAB, "a+");
	if (f == NULL) {
		error = errno;
		goto out;
	}
	rewind(f);

	if (lockf(fileno(f), F_LOCK, 0L) < 0) {
		(void) fprintf(stderr, dgettext(TEXT_DOMAIN,
			"share complete, however failed to lock %s "
			"for update: %s\n"), NFSLOGTAB, strerror(errno));
		error = -1;
		goto out;
	}

	if (logtab_deactivate_after_boot(f) == -1) {
		(void) fprintf(stderr, dgettext(TEXT_DOMAIN,
			"share complete, however could not deactivate "
			"entries in %s\n"), NFSLOGTAB);
		error = -1;
		goto out;
	}

	/*
	 * Remove entries matching buffer and sharepoint since we're
	 * going to replace it with perhaps an entry with a new tag.
	 */
	if (logtab_rement(f, buffer, dir, NULL, -1)) {
		(void) fprintf(stderr, dgettext(TEXT_DOMAIN,
			"share complete, however could not remove matching "
			"entries in %s\n"), NFSLOGTAB);
		error = -1;
		goto out;
	}

	/*
	 * Deactivate all active entries matching this sharepoint
	 */
	if (logtab_deactivate(f, NULL, dir, NULL)) {
		(void) fprintf(stderr, dgettext(TEXT_DOMAIN,
			"share complete, however could not deactivate matching "
			"entries in %s\n"), NFSLOGTAB);
		error = -1;
		goto out;
	}

	lep.le_buffer = buffer;
	lep.le_path = dir;
	lep.le_tag = tag;
	lep.le_state = LES_ACTIVE;

	/*
	 * Add new sharepoint / buffer location to nfslogtab
	 */
	if (logtab_putent(f, &lep) < 0) {
		(void) fprintf(stderr, dgettext(TEXT_DOMAIN,
			"share complete, however could not add %s to %s\n"),
			dir, NFSLOGTAB);
		error = -1;
	}

out:
	if (f != NULL)
		(void) fclose(f);
	return (error);
}

/*
 * Deactivate an entry from the nfslogtab file
 */
static int
nfslogtab_deactivate(path)
	char *path;
{
	FILE *f;
	int error = 0;

	f = fopen(NFSLOGTAB, "r+");
	if (f == NULL) {
		error = errno;
		goto out;
	}
	if (lockf(fileno(f), F_LOCK, 0L) < 0) {
		error = errno;
		(void)  fprintf(stderr, dgettext(TEXT_DOMAIN,
			"share complete, however could not lock %s for "
			"update: %s\n"), NFSLOGTAB, strerror(error));
		goto out;
	}
	if (logtab_deactivate(f, NULL, path, NULL) == -1) {
		error = -1;
		(void) fprintf(stderr,
			dgettext(TEXT_DOMAIN,
				"share complete, however could not "
				"deactivate %s in %s\n"), path, NFSLOGTAB);
		goto out;
	}

out:	if (f != NULL)
		(void) fclose(f);

	return (error);
}

/*
 * public_exists(share)
 *
 * check to see if public option is set on any other share than the
 * one specified.
 */
static int
public_exists(sa_share_t skipshare)
{
	sa_share_t share;
	sa_group_t group;
	sa_optionset_t opt;
	sa_property_t prop;
	int exists = 0;
	sa_handle_t handle;

	group = sa_get_parent_group(skipshare);
	if (group == NULL)
	    return (SA_NO_SUCH_GROUP);

	handle = sa_find_group_handle(group);
	if (handle == NULL)
	    return (SA_SYSTEM_ERR);

	for (group = sa_get_group(handle, NULL); group != NULL;
	    group = sa_get_next_group(group)) {
	    for (share = sa_get_share(group, NULL); share != NULL;
		share = sa_get_next_share(share)) {
		if (share == skipshare)
		    continue;
		opt = sa_get_optionset(share, "nfs");
		if (opt != NULL) {
		    prop = sa_get_property(opt, "public");
		    if (prop != NULL) {
			char *shared;
			shared = sa_get_share_attr(share, "shared");
			if (shared != NULL) {
			    exists = strcmp(shared, "true") == 0;
			    sa_free_attr_string(shared);
			    goto out;
			}
		    }
		}
	    }
	}
out:
	return (exists);
}

/*
 * sa_enable_share at the protocol level, enable_share must tell the
 * implementation that it is to enable the share. This entails
 * converting the path and options into the appropriate ioctl
 * calls. It is assumed that all error checking of paths, etc. were
 * done earlier.
 */
static int
nfs_enable_share(sa_share_t share)
{
	struct exportdata export;
	sa_optionset_t secoptlist;
	struct secinfo *sp;
	int num_secinfo;
	sa_optionset_t opt;
	sa_security_t sec;
	sa_property_t prop;
	char *path;
	int err = SA_OK;

	/* Don't drop core if the NFS module isn't loaded. */
	(void) signal(SIGSYS, SIG_IGN);

	/* get the path since it is important in several places */
	path = sa_get_share_attr(share, "path");
	if (path == NULL)
	    return (SA_NO_SUCH_PATH);

	/*
	 * find the optionsets and security sets.  There may not be
	 * any or there could be one or two for each of optionset and
	 * security may have multiple, one per security type per
	 * protocol type.
	 */
	opt = sa_get_derived_optionset(share, "nfs", 1);
	secoptlist = (sa_optionset_t)sa_get_all_security_types(share, "nfs", 1);
	if (secoptlist != NULL)
	    num_secinfo = MAX(1, count_security(secoptlist));
	else
	    num_secinfo = 1;

	/*
	 * walk through the options and fill in the structure
	 * appropriately.
	 */

	(void) memset(&export, '\0', sizeof (export));

	/*
	 * do non-security options first since there is only one after
	 * the derived group is constructed.
	 */
	export.ex_version = EX_CURRENT_VERSION;
	export.ex_anon = UID_NOBODY; /* this is our default value */
	export.ex_index = NULL;
	export.ex_path = path;
	export.ex_pathlen = strlen(path) + 1;

	sp = calloc(num_secinfo, sizeof (struct secinfo));

	if (opt != NULL)
	    err = fill_export_from_optionset(&export, opt);

	/*
	 * check to see if "public" is set. If it is, then make sure
	 * no other share has it set. If it is already used, fail.
	 */

	if (export.ex_flags & EX_PUBLIC && public_exists(share)) {
	    (void) printf(dgettext(TEXT_DOMAIN,
					"NFS: Cannot share more than one file "
			    "system with 'public' property\n"));
	    err = SA_NOT_ALLOWED;
	    goto out;
	}

	if (sp == NULL) {
		/* failed to alloc memory */
	    (void) printf("NFS: no memory for security\n");
	    err = SA_NO_MEMORY;
	} else {
	    int i;
	    export.ex_secinfo = sp;
	    /* get default secinfo */
	    export.ex_seccnt = num_secinfo;
		/*
		 * since we must have one security option defined, we
		 * init to the default and then override as we find
		 * defined security options. This handles the case
		 * where we have no defined options but we need to set
		 * up one.
		 */
	    sp[0].s_window = DEF_WIN;
	    sp[0].s_rootnames = NULL;
	    /* setup a default in case no properties defined */
	    if (nfs_getseconfig_default(&sp[0].s_secinfo)) {
		(void) printf(dgettext(TEXT_DOMAIN,
				    "NFS: nfs_getseconfig_default: failed to "
				    "get default security mode\n"));
		err = SA_CONFIG_ERR;
	    }
	    if (secoptlist != NULL) {
		for (i = 0, prop = sa_get_property(secoptlist, NULL);
		    prop != NULL && i < num_secinfo;
		    prop = sa_get_next_property(prop), i++) {
		    char *sectype;

		    sectype = sa_get_property_attr(prop, "type");
		    /* if sectype is NULL, we can't do anything so skip */
		    if (sectype == NULL)
			continue;
		    sec = (sa_security_t)sa_get_derived_security(share,
								sectype,
								"nfs", 1);
		    sp[i].s_window = DEF_WIN;
		    sp[i].s_rootcnt = 0;
		    sp[i].s_rootnames = NULL;

		    (void) fill_security_from_secopts(&sp[i], sec);
		    if (sec != NULL)
			sa_free_derived_security(sec);
		    if (sectype != NULL)
			sa_free_attr_string(sectype);
		}
	    }
		/*
		 * when we get here, we can do the exportfs system call and
		 * initiate thinsg. We probably want to enable the nfs.server
		 * service first if it isn't running within SMF.
		 */
		/* check nfs.server status and start if needed */

		/* now add the share to the internal tables */
	    printarg(path, &export);
		/*
		 * call the exportfs system call which is implemented
		 * via the nfssys() call as the EXPORTFS subfunction.
		 */
	    if ((err = exportfs(path, &export)) < 0) {
		err = SA_SYSTEM_ERR;
		switch (errno) {
		case EREMOTE:
		    (void) printf(dgettext(TEXT_DOMAIN,
						"NFS: Cannot share remote file"
						"system: %s\n"),
					path);
		    break;
		case EPERM:
		    if (getzoneid() != GLOBAL_ZONEID) {
			(void) printf(dgettext(TEXT_DOMAIN,
					"NFS: Cannot share file systems "
					"in non-global zones: %s\n"), path);
			err = SA_NOT_SUPPORTED;
			break;
		    }
		    err = SA_NO_PERMISSION;
		    /* FALLTHROUGH */
		default:
		    break;
		}
	    } else {
		/* update sharetab with an add/modify */
		(void) sa_update_sharetab(share, "nfs");
	    }
	}

	if (err == SA_OK) {
		/*
		 * enable services as needed. This should probably be
		 * done elsewhere in order to minimize the calls to
		 * check services.
		 */
		/*
		 * check to see if logging and other services need to
		 * be triggered, but only if there wasn't an
		 * error. This is probably where sharetab should be
		 * updated with the NFS specific entry.
		 */
	    if (export.ex_flags & EX_LOG) {
		/* enable logging */
		if (nfslogtab_add(path, export.ex_log_buffer,
		    export.ex_tag) != 0) {
		    (void) fprintf(stderr,
				dgettext(TEXT_DOMAIN,
					"Could not enable logging for %s\n"),
				path);
		}
		_check_services(service_list_logging);
	    } else {
		/*
		 * don't have logging so remove it from file. It might
		 * not be thre, but that doesn't matter.
		 */
		(void) nfslogtab_deactivate(path);
		_check_services(service_list_default);
	    }
	}

out:
	if (path != NULL)
	    free(path);

	cleanup_export(&export);
	if (opt != NULL)
	    sa_free_derived_optionset(opt);
	if (secoptlist != NULL)
	    (void) sa_destroy_optionset(secoptlist);
	return (err);
}

/*
 * nfs_disable_share(share)
 *
 * Unshare the specified share.  How much error checking should be
 * done? We only do basic errors for now.
 */
static int
nfs_disable_share(char *share)
{
	int err;
	int ret = SA_OK;

	if (share != NULL) {
	    err = exportfs(share, NULL);
	    if (err < 0) {
		/* TBD: only an error in some cases - need better analysis */
		switch (errno) {
		case EPERM:
		case EACCES:
		    ret = SA_NO_PERMISSION;
		    if (getzoneid() != GLOBAL_ZONEID) {
			ret = SA_NOT_SUPPORTED;
		    }
		    break;
		case EINVAL:
		case ENOENT:
		    ret = SA_NO_SUCH_PATH;
		    break;
		default:
		    ret = SA_SYSTEM_ERR;
		    break;
		}
	    }
	    if (ret == SA_OK || ret == SA_NO_SUCH_PATH) {
		(void) sa_delete_sharetab(share, "nfs");
		/* just in case it was logged */
		(void) nfslogtab_deactivate(share);
	    }
	}
	return (ret);
}

/*
 * check ro vs rw values.  Over time this may get beefed up.
 * for now it just does simple checks.
 */

static int
check_rorw(char *v1, char *v2)
{
	int ret = SA_OK;
	if (strcmp(v1, v2) == 0)
	    ret = SA_VALUE_CONFLICT;
	return (ret);
}

/*
 * nfs_validate_property(property, parent)
 *
 * Check that the property has a legitimate value for its type.
 */

static int
nfs_validate_property(sa_property_t property, sa_optionset_t parent)
{
	int ret = SA_OK;
	char *propname;
	char *other;
	int optindex;
	nfsl_config_t *configlist;
	sa_group_t parent_group;
	char *value;

	propname = sa_get_property_attr(property, "type");

	if ((optindex = findopt(propname)) < 0)
	    ret = SA_NO_SUCH_PROP;

	/* need to validate value range here as well */

	if (ret == SA_OK) {
	    parent_group = sa_get_parent_group((sa_share_t)parent);
	    if (optdefs[optindex].share && !sa_is_share(parent_group)) {
		ret = SA_PROP_SHARE_ONLY;
	    }
	}
	if (ret == SA_OK) {
	    value = sa_get_property_attr(property, "value");
	    if (value != NULL) {
		/* first basic type checking */
		switch (optdefs[optindex].type) {
		case OPT_TYPE_NUMBER:
		    /* check that the value is all digits */
		    if (!is_a_number(value))
			ret = SA_BAD_VALUE;
		    break;
		case OPT_TYPE_BOOLEAN:
		    if (strlen(value) == 0 ||
			strcasecmp(value, "true") == 0 ||
			strcmp(value, "1") == 0 ||
			strcasecmp(value, "false") == 0 ||
			strcmp(value, "0") == 0) {
			ret = SA_OK;
		    } else {
			ret = SA_BAD_VALUE;
		    }
		    break;
		case OPT_TYPE_USER:
		    if (!is_a_number(value)) {
			struct passwd *pw;
			/* in this case it would have to be a user name */
			pw = getpwnam(value);
			if (pw == NULL)
			    ret = SA_BAD_VALUE;
			endpwent();
		    } else {
			uint64_t intval;
			intval = strtoull(value, NULL, 0);
			if (intval > UID_MAX && intval != ~0)
			    ret = SA_BAD_VALUE;
		    }
		    break;
		case OPT_TYPE_FILE:
		    if (strcmp(value, "..") == 0 ||
			strchr(value, '/') != NULL) {
			ret = SA_BAD_VALUE;
		    }
		    break;
		case OPT_TYPE_ACCLIST:
			/*
			 * access list handling. Should eventually
			 * validate that all the values make sense.
			 * Also, ro and rw may have cross value
			 * conflicts.
			 */
		    if (strcmp(propname, SHOPT_RO) == 0)
			other = SHOPT_RW;
		    else if (strcmp(propname, SHOPT_RW) == 0)
			other = SHOPT_RO;
		    else
			other = NULL;
		    if (other != NULL && parent != NULL) {
			/* compare rw(ro) with ro(rw) */
			sa_property_t oprop;
			oprop = sa_get_property(parent, other);
			if (oprop != NULL) {
			    /* only potential confusion if other exists */
			    char *ovalue;
			    ovalue = sa_get_property_attr(oprop, "value");
			    if (ovalue != NULL) {
				ret = check_rorw(value, ovalue);
				sa_free_attr_string(ovalue);
			    }
			}
		    }
		    break;
		case OPT_TYPE_LOGTAG:
		    if (nfsl_getconfig_list(&configlist) == 0) {
			int error;
			if (value == NULL || strlen(value) == 0) {
			    if (value != NULL)
				sa_free_attr_string(value);
			    value = strdup("global");
			}
			if (nfsl_findconfig(configlist, value, &error) == NULL)
			    ret = SA_BAD_VALUE;
			nfsl_freeconfig_list(&configlist);
		    } else {
			ret = SA_CONFIG_ERR;
		    }
		    break;
		case OPT_TYPE_STRING:
		    /* whatever is here should be ok */
		    break;
		case OPT_TYPE_SECURITY:
			/*
			 * The "sec" property isn't used in the
			 * non-legacy parts of sharemgr. We need to
			 * reject it here. For legacy, it is pulled
			 * out well before we get here.
			 */
		    ret = SA_NO_SUCH_PROP;
		    break;
		default:
		    break;
		}
		sa_free_attr_string(value);
		if (ret == SA_OK && optdefs[optindex].check != NULL) {
		    /* do the property specific check */
		    ret = optdefs[optindex].check(property);
		}
	    }
	}

	if (propname != NULL)
	    sa_free_attr_string(propname);
	return (ret);
}

/*
 * Protocol management functions
 *
 * Properties defined in the default files are defined in
 * proto_option_defs for parsing and validation. If "other" and
 * "compare" are set, then the value for this property should be
 * compared against the property specified in "other" using the
 * "compare" check (either <= or >=) in order to ensure that the
 * values are in the correct range.  E.g. setting server_versmin
 * higher than server_versmax should not be allowed.
 */

struct proto_option_defs {
	char *tag;
	char *name;	/* display name -- remove protocol identifier */
	int index;
	int type;
	union {
	    int intval;
	    char *string;
	} defvalue;
	uint32_t svcs;
	int32_t minval;
	int32_t maxval;
	char *file;
	char *other;
	int compare;
#define	OPT_CMP_GE	0
#define	OPT_CMP_LE	1
	int (*check)(char *);
} proto_options[] = {
#define	PROTO_OPT_NFSD_SERVERS			0
	{"nfsd_servers",
	    "servers", PROTO_OPT_NFSD_SERVERS, OPT_TYPE_NUMBER, 16, SVC_NFSD,
	    1, INT32_MAX, NFSADMIN},
#define	PROTO_OPT_LOCKD_LISTEN_BACKLOG		1
	{"lockd_listen_backlog",
	    "lockd_listen_backlog", PROTO_OPT_LOCKD_LISTEN_BACKLOG,
	    OPT_TYPE_NUMBER, 32, SVC_LOCKD, 32, INT32_MAX, NFSADMIN},
#define	PROTO_OPT_LOCKD_SERVERS			2
	{"lockd_servers",
	    "lockd_servers", PROTO_OPT_LOCKD_SERVERS, OPT_TYPE_NUMBER, 20,
	    SVC_LOCKD, 1, INT32_MAX, NFSADMIN},
#define	PROTO_OPT_LOCKD_RETRANSMIT_TIMEOUT	3
	{"lockd_retransmit_timeout",
	    "lockd_retransmit_timeout", PROTO_OPT_LOCKD_RETRANSMIT_TIMEOUT,
	    OPT_TYPE_NUMBER, 5, SVC_LOCKD, 0, INT32_MAX, NFSADMIN},
#define	PROTO_OPT_GRACE_PERIOD			4
	{"grace_period",
	    "grace_period", PROTO_OPT_GRACE_PERIOD, OPT_TYPE_NUMBER, 90,
	    SVC_LOCKD, 0, INT32_MAX, NFSADMIN},
#define	PROTO_OPT_NFS_SERVER_VERSMIN		5
	{"nfs_server_versmin",
	    "server_versmin", PROTO_OPT_NFS_SERVER_VERSMIN, OPT_TYPE_NUMBER,
	    (int)NFS_VERSMIN_DEFAULT, SVC_NFSD|SVC_MOUNTD, NFS_VERSMIN,
	    NFS_VERSMAX, NFSADMIN, "server_versmax", OPT_CMP_LE},
#define	PROTO_OPT_NFS_SERVER_VERSMAX		6
	{"nfs_server_versmax",
	    "server_versmax", PROTO_OPT_NFS_SERVER_VERSMAX, OPT_TYPE_NUMBER,
	    (int)NFS_VERSMAX_DEFAULT, SVC_NFSD|SVC_MOUNTD, NFS_VERSMIN,
	    NFS_VERSMAX, NFSADMIN, "server_versmin", OPT_CMP_GE},
#define	PROTO_OPT_NFS_CLIENT_VERSMIN		7
	{"nfs_client_versmin",
	    "client_versmin", PROTO_OPT_NFS_CLIENT_VERSMIN, OPT_TYPE_NUMBER,
	    (int)NFS_VERSMIN_DEFAULT, NULL, NFS_VERSMIN, NFS_VERSMAX,
	    NFSADMIN, "client_versmax", OPT_CMP_LE},
#define	PROTO_OPT_NFS_CLIENT_VERSMAX		8
	{"nfs_client_versmax",
	    "client_versmax", PROTO_OPT_NFS_CLIENT_VERSMAX, OPT_TYPE_NUMBER,
	    (int)NFS_VERSMAX_DEFAULT, NULL, NFS_VERSMIN, NFS_VERSMAX,
	    NFSADMIN, "client_versmin", OPT_CMP_GE},
#define	PROTO_OPT_NFS_SERVER_DELEGATION		9
	{"nfs_server_delegation",
	    "server_delegation", PROTO_OPT_NFS_SERVER_DELEGATION,
	    OPT_TYPE_ONOFF, NFS_SERVER_DELEGATION_DEFAULT, SVC_NFSD, 0, 0,
	    NFSADMIN},
#define	PROTO_OPT_NFSMAPID_DOMAIN		10
	{"nfsmapid_domain",
	    "nfsmapid_domain", PROTO_OPT_NFSMAPID_DOMAIN, OPT_TYPE_DOMAIN,
	    NULL, SVC_NFSMAPID, 0, 0, NFSADMIN},
#define	PROTO_OPT_NFSD_MAX_CONNECTIONS		11
	{"nfsd_max_connections",
	    "max_connections", PROTO_OPT_NFSD_MAX_CONNECTIONS,
	    OPT_TYPE_NUMBER, -1, SVC_NFSD, -1, INT32_MAX, NFSADMIN},
#define	PROTO_OPT_NFSD_PROTOCOL			12
	{"nfsd_protocol",
	    "protocol", PROTO_OPT_NFSD_PROTOCOL, OPT_TYPE_PROTOCOL, 0,
	    SVC_NFSD, 0, 0, NFSADMIN},
#define	PROTO_OPT_NFSD_LISTEN_BACKLOG		13
	{"nfsd_listen_backlog",
	    "listen_backlog", PROTO_OPT_NFSD_LISTEN_BACKLOG,
	    OPT_TYPE_NUMBER, 0,
	    SVC_LOCKD, 0, INT32_MAX, NFSADMIN},
	{NULL}
};

/*
 * the protoset holds the defined options so we don't have to read
 * them multiple times
 */
sa_protocol_properties_t protoset;

static int
findprotoopt(char *name, int whichname)
{
	int i;
	for (i = 0; proto_options[i].tag != NULL; i++) {
	    if (whichname == 1) {
		if (strcasecmp(proto_options[i].name, name) == 0)
			return (i);
	    } else {
		if (strcasecmp(proto_options[i].tag, name) == 0)
			return (i);
	    }
	}
	return (-1);
}

/*
 * fixcaselower(str)
 *
 * convert a string to lower case (inplace).
 */

static void
fixcaselower(char *str)
{
	while (*str) {
	    *str = tolower(*str);
	    str++;
	}
}

/*
 * fixcaseupper(str)
 *
 * convert a string to upper case (inplace).
 */

static void
fixcaseupper(char *str)
{
	while (*str) {
	    *str = toupper(*str);
	    str++;
	}
}

/*
 * initprotofromdefault()
 *
 * read the default file(s) and add the defined values to the
 * protoset.  Note that default values are known from the built in
 * table in case the file doesn't have a definition.
 */

static int
initprotofromdefault()
{
	FILE *nfs;
	char buff[BUFSIZ];
	char *name;
	char *value;
	sa_property_t prop;
	int index;

	protoset = sa_create_protocol_properties("nfs");

	if (protoset != NULL) {
	    nfs = fopen(NFSADMIN, "r");
	    if (nfs != NULL) {
		while (fgets(buff, sizeof (buff), nfs) != NULL) {
		    switch (buff[0]) {
		    case '\n':
		    case '#':
			/* skip */
			break;
		    default:
			name = buff;
			buff[strlen(buff) - 1] = '\0';
			value = strchr(name, '=');
			if (value != NULL) {
			    *value++ = '\0';
			    if ((index = findprotoopt(name, 0)) >= 0) {
				fixcaselower(name);
				prop = sa_create_property(
					proto_options[index].name,
					value);
				(void) sa_add_protocol_property(protoset, prop);
			    }
			}
		    }
		}
		if (nfs != NULL)
		    (void) fclose(nfs);
	    }
	}
	if (protoset == NULL)
	    return (SA_NO_MEMORY);
	return (SA_OK);
}

/*
 * add_default()
 *
 * Add the default values for any property not defined in the parsing
 * of the default files. Values are set according to their defined
 * types.
 */

static void
add_defaults()
{
	int i;
	char number[MAXDIGITS];

	for (i = 0; proto_options[i].tag != NULL; i++) {
	    sa_property_t prop;
	    prop = sa_get_protocol_property(protoset, proto_options[i].name);
	    if (prop == NULL) {
		/* add the default value */
		switch (proto_options[i].type) {
		case OPT_TYPE_NUMBER:
		    (void) snprintf(number, sizeof (number), "%d",
				proto_options[i].defvalue.intval);
		    prop = sa_create_property(proto_options[i].name, number);
		    break;

		case OPT_TYPE_BOOLEAN:
		    prop = sa_create_property(proto_options[i].name,
					proto_options[i].defvalue.intval ?
					"true" : "false");
		    break;

		case OPT_TYPE_ONOFF:
		    prop = sa_create_property(proto_options[i].name,
					proto_options[i].defvalue.intval ?
					"on" : "off");
		    break;

		default:
		    /* treat as strings of zero length */
		    prop = sa_create_property(proto_options[i].name, "");
		    break;
		}
		if (prop != NULL)
		    (void) sa_add_protocol_property(protoset, prop);
	    }
	}
}

static void
free_protoprops()
{
	xmlFreeNode(protoset);
}

/*
 * nfs_init()
 *
 * Initialize the NFS plugin.
 */

static int
nfs_init()
{
	int ret = SA_OK;

	if (sa_plugin_ops.sa_init != nfs_init)
	    (void) printf(dgettext(TEXT_DOMAIN,
				    "NFS plugin not properly initialized\n"));

	ret = initprotofromdefault();
	add_defaults();

	return (ret);
}

/*
 * nfs_fini()
 *
 * uninitialize the NFS plugin. Want to avoid memory leaks.
 */

static void
nfs_fini()
{
	free_protoprops();
}

/*
 * nfs_get_proto_set()
 *
 * Return an optionset with all the protocol specific properties in
 * it.
 */

static sa_protocol_properties_t
nfs_get_proto_set()
{
	return (protoset);
}

struct deffile {
	struct deffile *next;
	char *line;
};

/*
 * read_default_file(fname)
 *
 * Read the specified default file. We return a list of entries. This
 * get used for adding or removing values.
 */

static struct deffile *
read_default_file(char *fname)
{
	FILE *file;
	struct deffile *defs = NULL;
	struct deffile *newdef;
	struct deffile *prevdef = NULL;
	char buff[BUFSIZ * 2];

	file = fopen(fname, "r");
	if (file != NULL) {
	    while (fgets(buff, sizeof (buff), file) != NULL) {
		newdef = (struct deffile *)calloc(1, sizeof (struct deffile));
		if (newdef != NULL) {
		    newdef->line = strdup(buff);
		    if (defs == NULL) {
			prevdef = defs = newdef;
		    } else {
			prevdef->next = newdef;
			prevdef = newdef;
		    }
		}
	    }
	}
	(void) fclose(file);
	return (defs);
}

static void
free_default_file(struct deffile *defs)
{
	struct deffile *curdefs = NULL;

	while (defs != NULL) {
	    curdefs = defs;
	    defs = defs->next;
	    if (curdefs->line != NULL)
		free(curdefs->line);
	    free(curdefs);
	}
}

/*
 * write_default_file(fname, defs)
 *
 * Write the default file back.
 */

static int
write_default_file(char *fname, struct deffile *defs)
{
	FILE *file;
	int ret = SA_OK;
	sigset_t old, new;

	file = fopen(fname, "w+");
	if (file != NULL) {
	    (void) sigprocmask(SIG_BLOCK, NULL, &new);
	    (void) sigaddset(&new, SIGHUP);
	    (void) sigaddset(&new, SIGINT);
	    (void) sigaddset(&new, SIGQUIT);
	    (void) sigaddset(&new, SIGTSTP);
	    (void) sigprocmask(SIG_SETMASK, &new, &old);
	    while (defs != NULL) {
		(void) fputs(defs->line, file);
		defs = defs->next;
	    }
	    (void) fsync(fileno(file));
	    (void) sigprocmask(SIG_SETMASK, &old, NULL);
	    (void) fclose(file);
	} else {
	    switch (errno) {
	    case EPERM:
	    case EACCES:
		ret = SA_NO_PERMISSION;
		break;
	    default:
		ret = SA_SYSTEM_ERR;
	    }
	}
	return (ret);
}


/*
 * set_default_file_value(tag, value)
 *
 * Set the default file value for tag to value. Then rewrite the file.
 * tag and value are always set.  The caller must ensure this.
 */

#define	MAX_STRING_LENGTH	256
static int
set_default_file_value(char *tag, char *value)
{
	int ret = SA_OK;
	struct deffile *root;
	struct deffile *defs;
	struct deffile *prev;
	char string[MAX_STRING_LENGTH];
	int len;
	int update = 0;

	(void) snprintf(string, MAX_STRING_LENGTH, "%s=", tag);
	len = strlen(string);

	root = defs = read_default_file(NFSADMIN);
	if (root == NULL) {
	    if (errno == EPERM || errno == EACCES)
		ret = SA_NO_PERMISSION;
	    else
		ret = SA_SYSTEM_ERR;
	} else {
	    while (defs != NULL) {
		if (defs->line != NULL &&
		    strncasecmp(defs->line, string, len) == 0) {
		    /* replace with the new value */
		    free(defs->line);
		    fixcaseupper(tag);
		    (void) snprintf(string, sizeof (string), "%s=%s\n",
					tag, value);
		    string[MAX_STRING_LENGTH - 1] = '\0';
		    defs->line = strdup(string);
		    update = 1;
		    break;
		}
		defs = defs->next;
	    }
	    if (!update) {
		defs = root;
		/* didn't find, so see if it is a comment */
		(void) snprintf(string, MAX_STRING_LENGTH, "#%s=", tag);
		len = strlen(string);
		while (defs != NULL) {
		    if (strncasecmp(defs->line, string, len) == 0) {
			/* replace with the new value */
			free(defs->line);
			fixcaseupper(tag);
			(void) snprintf(string, sizeof (string),
				    "%s=%s\n", tag, value);
			string[MAX_STRING_LENGTH - 1] = '\0';
			defs->line = strdup(string);
			update = 1;
			break;
		    }
		    defs = defs->next;
		}
	    }
	    if (!update) {
		fixcaseupper(tag);
		(void) snprintf(string, sizeof (string), "%s=%s\n",
					tag, value);
		prev = root;
		while (prev->next != NULL)
		    prev = prev->next;
		defs = malloc(sizeof (struct deffile));
		prev->next = defs;
		if (defs != NULL) {
		    defs->next = NULL;
		    defs->line = strdup(string);
		}
	    }
	    if (update) {
		ret = write_default_file(NFSADMIN, root);
	    }
	    free_default_file(root);
	}
	return (ret);
}

/*
 * service_in_state(service, chkstate)
 *
 * Want to know if the specified service is in the desired state
 * (chkstate) or not. Return true (1) if it is and false (0) if it
 * isn't.
 */
static int
service_in_state(char *service, const char *chkstate)
{
	char *state;
	int ret = B_FALSE;

	state = smf_get_state(service);
	if (state != NULL) {
	    /* got the state so get the equality for the return value */
	    ret = strcmp(state, chkstate) == 0 ? B_TRUE : B_FALSE;
	    free(state);
	}
	return (ret);
}

/*
 * restart_service(svcs)
 *
 * Walk through the bit mask of services that need to be restarted in
 * order to use the new property values. Some properties affect
 * multiple daemons. Should only restart a service if it is currently
 * enabled (online).
 */

static void
restart_service(uint32_t svcs)
{
	uint32_t mask;
	int ret;
	char *service;

	for (mask = 1; svcs != 0; mask <<= 1) {
	    switch (svcs & mask) {
	    case SVC_LOCKD:
		service = LOCKD;
		break;
	    case SVC_STATD:
		service = STATD;
		break;
	    case SVC_NFSD:
		service = NFSD;
		break;
	    case SVC_MOUNTD:
		service = MOUNTD;
		break;
	    case SVC_NFS4CBD:
		service = NFS4CBD;
		break;
	    case SVC_NFSMAPID:
		service = NFSMAPID;
		break;
	    case SVC_RQUOTAD:
		service = RQUOTAD;
		break;
	    case SVC_NFSLOGD:
		service = NFSLOGD;
		break;
	    default:
		continue;
	    }

		/*
		 * Only attempt to restart the service if it is
		 * currently running. In the future, it may be
		 * desirable to use smf_refresh_instance if the NFS
		 * services ever implement the refresh method.
		 */
	    if (service_in_state(service, SCF_STATE_STRING_ONLINE)) {
		ret = smf_restart_instance(service);
		/*
		 * There are only a few SMF errors at this point, but
		 * it is also possible that a bad value may have put
		 * the service into maintenance if there wasn't an
		 * SMF level error.
		 */
		if (ret != 0) {
		    (void) fprintf(stderr,
				dgettext(TEXT_DOMAIN,
					"%s failed to restart: %s\n"),
				scf_strerror(scf_error()));
		} else {
			/*
			 * Check whether it has gone to "maintenance"
			 * mode or not. Maintenance implies something
			 * went wrong.
			 */
		    if (service_in_state(service, SCF_STATE_STRING_MAINT)) {
			(void) fprintf(stderr,
					dgettext(TEXT_DOMAIN,
						"%s failed to restart\n"),
					service);
		    }
		}
	    }
	    svcs &= ~mask;
	}
}

/*
 * nfs_minmax_check(name, value)
 *
 * Verify that the value for the property specified by index is valid
 * relative to the opposite value in the case of a min/max variable.
 * Currently, server_minvers/server_maxvers and
 * client_minvers/client_maxvers are the only ones to check.
 */

static int
nfs_minmax_check(int index, int value)
{
	int val;
	char *pval;
	sa_property_t prop;
	sa_optionset_t opts;
	int ret = B_TRUE;

	if (proto_options[index].other != NULL) {
	    /* have a property to compare against */
	    opts = nfs_get_proto_set();
	    prop = sa_get_property(opts, proto_options[index].other);
		/*
		 * If we don't find the property, assume default
		 * values which will work since the max will be at the
		 * max and the min at the min.
		 */
	    if (prop != NULL) {
		pval = sa_get_property_attr(prop, "value");
		if (pval != NULL) {
		    val = strtoul(pval, NULL, 0);
		    if (proto_options[index].compare == OPT_CMP_LE) {
			ret = value <= val ? B_TRUE : B_FALSE;
		    } else if (proto_options[index].compare == OPT_CMP_GE) {
			ret = value >= val ? B_TRUE : B_FALSE;
		    }
		}
	    }
	}
	return (ret);
}

/*
 * nfs_validate_proto_prop(index, name, value)
 *
 * Verify that the property specifed by name can take the new
 * value. This is a sanity check to prevent bad values getting into
 * the default files. All values need to be checked against what is
 * allowed by their defined type. If a type isn't explicitly defined
 * here, it is treated as a string.
 *
 * Note that OPT_TYPE_NUMBER will additionally check that the value is
 * within the range specified and potentially against another property
 * value as well as specified in the proto_options members other and
 * compare.
 */

static int
nfs_validate_proto_prop(int index, char *name, char *value)
{
	int ret = SA_OK;
	char *cp;
#ifdef lint
	name = name;
#endif

	switch (proto_options[index].type) {
	case OPT_TYPE_NUMBER:
	    if (!is_a_number(value))
		ret = SA_BAD_VALUE;
	    else {
		int val;
		val = strtoul(value, NULL, 0);
		if (val < proto_options[index].minval ||
		    val > proto_options[index].maxval)
		    ret = SA_BAD_VALUE;
		/*
		 * For server_versmin/server_versmax and
		 * client_versmin/client_versmax, the value of the
		 * min(max) should be checked to be correct relative
		 * to the current max(min).
		 */
		if (!nfs_minmax_check(index, val)) {
		    ret = SA_BAD_VALUE;
		}
	    }
	    break;

	case OPT_TYPE_DOMAIN:
		/*
		 * needs to be a qualified domain so will have at
		 * least one period and other characters on either
		 * side of it.  A zero length string is also allowed
		 * and is the way to turn off the override.
		 */
	    if (strlen(value) == 0)
		break;
	    cp = strchr(value, '.');
	    if (cp == NULL || cp == value || strchr(value, '@') != NULL)
		ret = SA_BAD_VALUE;
	    break;

	case OPT_TYPE_BOOLEAN:
	    if (strlen(value) == 0 ||
		strcasecmp(value, "true") == 0 ||
		strcmp(value, "1") == 0 ||
		strcasecmp(value, "false") == 0 ||
		strcmp(value, "0") == 0) {
		ret = SA_OK;
	    } else {
		ret = SA_BAD_VALUE;
	    }
	    break;

	case OPT_TYPE_ONOFF:
	    if (strcasecmp(value, "on") != 0 &&
		strcasecmp(value, "off") != 0) {
		ret = SA_BAD_VALUE;
	    }
	    break;

	case OPT_TYPE_PROTOCOL:
	    if (strcasecmp(value, "all") != 0 &&
		strcasecmp(value, "tcp") != 0 &&
		strcasecmp(value, "udp") != 0)
		ret = SA_BAD_VALUE;
	    break;

	default:
	    /* treat as a string */
	    break;
	}
	return (ret);
}

/*
 * nfs_set_proto_prop(prop)
 *
 * check that prop is valid.
 */

static int
nfs_set_proto_prop(sa_property_t prop)
{
	int ret = SA_OK;
	char *name;
	char *value;

	name = sa_get_property_attr(prop, "type");
	value = sa_get_property_attr(prop, "value");
	if (name != NULL && value != NULL) {
	    int index = findprotoopt(name, 1);
	    if (index >= 0) {
		/* should test for valid value */
		ret = nfs_validate_proto_prop(index, name, value);
		if (ret == SA_OK)
		    ret = set_default_file_value(proto_options[index].tag,
							value);
		if (ret == SA_OK)
		    restart_service(proto_options[index].svcs);
	    }
	}
	if (name != NULL)
	    sa_free_attr_string(name);
	if (value != NULL)
	    sa_free_attr_string(value);
	return (ret);
}

/*
 * nfs_get_status()
 *
 * What is the current status of the nfsd? We use the SMF state here.
 * Caller must free the returned value.
 */

static char *
nfs_get_status()
{
	char *state;
	state = smf_get_state(NFSD);
	return (state != NULL ? state : strdup("-"));
}

/*
 * nfs_space_alias(alias)
 *
 * Lookup the space (security) name. If it is default, convert to the
 * real name.
 */

static char *
nfs_space_alias(char *space)
{
	char *name = space;
	seconfig_t secconf;

	/*
	 * Only the space named "default" is special. If it is used,
	 * the default needs to be looked up and the real name used.
	 * This is normally "sys" but could be changed.  We always
	 * change defautl to the real name.
	 */
	if (strcmp(space, "default") == 0 &&
	    nfs_getseconfig_default(&secconf) == 0) {
	    if (nfs_getseconfig_bynumber(secconf.sc_nfsnum, &secconf) == 0)
		name = secconf.sc_name;
	}
	return (strdup(name));
}