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/*
* 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"
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <string.h>
#include <syslog.h>
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/file.h>
#include <sys/time.h>
#include <errno.h>
#include <rpcsvc/mount.h>
#include <sys/pathconf.h>
#include <sys/systeminfo.h>
#include <sys/utsname.h>
#include <signal.h>
#include <locale.h>
#include <unistd.h>
#include <thread.h>
#include <sharefs/share.h>
#include <sharefs/sharetab.h>
#include "../lib/sharetab.h"
#include "mountd.h"
static void freeexports(struct exportnode *);
static struct groupnode **newgroup(char *, struct groupnode **);
static struct exportnode **newexport(char *, struct groupnode *,
struct exportnode **);
static char *optlist[] = {
#define OPT_RO 0
SHOPT_RO,
#define OPT_RW 1
SHOPT_RW,
NULL
};
/*
* Send current export list to a client
*/
void
export(struct svc_req *rqstp)
{
SVCXPRT *transp;
struct exportnode *exportlist;
struct exportnode **tail;
struct groupnode *groups;
struct groupnode **grtail;
struct share *sh;
struct sh_list *shp;
char *gr, *p, *opts, *val, *lasts;
int export_to_everyone;
transp = rqstp->rq_xprt;
if (!svc_getargs(transp, xdr_void, NULL)) {
svcerr_decode(transp);
return;
}
check_sharetab();
exportlist = NULL;
tail = &exportlist;
(void) rw_rdlock(&sharetab_lock);
for (shp = share_list; shp; shp = shp->shl_next) {
groups = NULL;
grtail = &groups;
sh = shp->shl_sh;
/*
* Check for "ro" or "rw" list without argument values. This
* indicates export to everyone. Unfortunately, SunOS 4.x
* automounter uses this, and it is indicated indirectly with
* 'showmount -e'.
*
* If export_to_everyone is 1, then groups should be NULL to
* indicate export to everyone.
*/
opts = strdup(sh->sh_opts);
p = opts;
export_to_everyone = 0;
while (*p) {
switch (getsubopt(&p, optlist, &val)) {
case OPT_RO:
case OPT_RW:
if (val == NULL)
export_to_everyone = 1;
break;
}
}
free(opts);
if (export_to_everyone == 0) {
opts = strdup(sh->sh_opts);
p = opts;
/*
* Just concatenate all the hostnames/groups
* from the "ro" and "rw" lists for each flavor.
* This list is rather meaningless now, but
* that's what the protocol demands.
*/
while (*p) {
switch (getsubopt(&p, optlist, &val)) {
case OPT_RO:
case OPT_RW:
while ((gr = strtok_r(val, ":", &lasts))
!= NULL) {
val = NULL;
grtail = newgroup(gr, grtail);
}
break;
}
}
free(opts);
}
tail = newexport(sh->sh_path, groups, tail);
}
(void) rw_unlock(&sharetab_lock);
errno = 0;
if (!svc_sendreply(transp, xdr_exports, (char *)&exportlist))
log_cant_reply(transp);
freeexports(exportlist);
}
static void
freeexports(struct exportnode *ex)
{
struct groupnode *groups, *tmpgroups;
struct exportnode *tmpex;
while (ex) {
groups = ex->ex_groups;
while (groups) {
tmpgroups = groups->gr_next;
free(groups->gr_name);
free(groups);
groups = tmpgroups;
}
tmpex = ex->ex_next;
free(ex->ex_dir);
free(ex);
ex = tmpex;
}
}
static struct groupnode **
newgroup(char *grname, struct groupnode **tail)
{
struct groupnode *new;
char *newname;
new = exmalloc(sizeof (*new));
newname = exmalloc(strlen(grname) + 1);
(void) strcpy(newname, grname);
new->gr_name = newname;
new->gr_next = NULL;
*tail = new;
return (&new->gr_next);
}
static struct exportnode **
newexport(char *grname, struct groupnode *grplist, struct exportnode **tail)
{
struct exportnode *new;
char *newname;
new = exmalloc(sizeof (*new));
newname = exmalloc(strlen(grname) + 1);
(void) strcpy(newname, grname);
new->ex_dir = newname;
new->ex_groups = grplist;
new->ex_next = NULL;
*tail = new;
return (&new->ex_next);
}
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