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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 2010 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* SMB plugin for reparse point operations.
* For more details refer to section 5.4 of PSARC/2009/387
*/
#include <stdio.h>
#include <unistd.h>
#include <strings.h>
#include <string.h>
#include <sys/types.h>
#include <sys/errno.h>
#include <syslog.h>
#include "rp_plugin.h"
#include <smbsrv/smb_dfs.h>
static char *smb_rpo_service_type(void);
static boolean_t smb_rpo_supports_svc(const char *);
static int smb_rpo_deref(const char *, const char *, char *, size_t *);
static int smb_rpo_form(const char *, const char *, char *, size_t *);
struct rp_plugin_ops rp_plugin_ops = {
RP_PLUGIN_V1,
NULL, /* rpo_init */
NULL, /* rpo_fini */
smb_rpo_service_type,
smb_rpo_supports_svc,
smb_rpo_form,
smb_rpo_deref
};
/*
* Reports supported service type
*/
static char *
smb_rpo_service_type(void)
{
return (DFS_REPARSE_SVCTYPE);
}
/*
* Determines whether this plugin supports the given service type
*/
static boolean_t
smb_rpo_supports_svc(const char *svc_type)
{
if (svc_type == NULL)
return (B_FALSE);
if (strncasecmp(svc_type, DFS_REPARSE_SVCTYPE,
strlen(DFS_REPARSE_SVCTYPE)) == 0)
return (B_TRUE);
return (B_FALSE);
}
/*
* Accepts the service-specific item from the reparse point and returns the
* service-specific data requested. The caller specifies the size of the
* buffer provided via *bufsz; the routine will fail with EOVERFLOW if
* the results will not fit in the buffer, in which case, *bufsz will
* contain the number of bytes needed to hold the results.
*
* Currently, there is no transformation is needed to data stored in
* a reparse point for DFS, so 'buf' will contain the same data as
* 'svc_data'.
*/
static int
smb_rpo_deref(const char *svc_type, const char *svc_data, char *buf,
size_t *bufsz)
{
int slen;
if ((!svc_type) || (!svc_data) || (!buf) || (!bufsz))
return (EINVAL);
if (strcasecmp(svc_type, DFS_REPARSE_SVCTYPE) != 0)
return (ENOTSUP);
slen = strlen(svc_data) + 1;
if (slen > *bufsz) {
*bufsz = slen;
return (EOVERFLOW);
}
(void) strlcpy(buf, svc_data, *bufsz);
return (0);
}
/*
* Returns a string with the appropriate service-specific syntax to create
* a reparse point of the given svc_type, using the string from the
* reparse_add() call as part of the string.
*/
static int
smb_rpo_form(const char *svc_type, const char *svc_data, char *buf,
size_t *bufsz)
{
int slen;
if ((!svc_type) || (!svc_data) || (!buf) || (!bufsz))
return (EINVAL);
slen = strlen(svc_data) + 1;
if (slen > *bufsz) {
*bufsz = slen;
return (EOVERFLOW);
}
(void) strlcpy(buf, svc_data, *bufsz);
return (0);
}
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