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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License (the "License").
      6  * You may not use this file except in compliance with the License.
      7  *
      8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
      9  * or http://www.opensolaris.org/os/licensing.
     10  * See the License for the specific language governing permissions
     11  * and limitations under the License.
     12  *
     13  * When distributing Covered Code, include this CDDL HEADER in each
     14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     15  * If applicable, add the following below this CDDL HEADER, with the
     16  * fields enclosed by brackets "[]" replaced with your own identifying
     17  * information: Portions Copyright [yyyy] [name of copyright owner]
     18  *
     19  * CDDL HEADER END
     20  */
     21 /*
     22  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
     23  * Use is subject to license terms.
     24  */
     25 
     26 #ifndef _FS_REPARSE_H
     27 #define	_FS_REPARSE_H
     28 
     29 #ifdef __cplusplus
     30 extern "C" {
     31 #endif
     32 
     33 #include <sys/types.h>
     34 #include <sys/param.h>
     35 #ifdef _KERNEL
     36 #include <sys/time.h>
     37 #include <sys/nvpair.h>
     38 #else
     39 #include <libnvpair.h>
     40 #endif
     41 
     42 #define	FS_REPARSE_TAG_STR		"@{REPARSE"
     43 #define	FS_REPARSE_TAG_END_CHAR		'}'
     44 #define	FS_REPARSE_TAG_END_STR		"}"
     45 #define	FS_TOKEN_START_STR		"@{"
     46 #define	FS_TOKEN_END_STR		"}"
     47 
     48 #define	REPARSED			"svc:/system/filesystem/reparse:default"
     49 #define	MAXREPARSELEN			MAXPATHLEN
     50 #define	REPARSED_DOOR			"/var/run/reparsed_door"
     51 #define	REPARSED_DOORCALL_MAX_RETRY	4
     52 
     53 /*
     54  * This structure is shared between kernel code and user reparsed daemon.
     55  * The 'res_len' must be defined as int, and not size_t, for 32-bit reparsed
     56  * binary and 64-bit kernel code to work together.
     57  */
     58 typedef struct reparsed_door_res {
     59 	int	res_status;
     60 	int	res_len;
     61 	char	res_data[1];
     62 } reparsed_door_res_t;
     63 
     64 extern nvlist_t *reparse_init(void);
     65 extern void reparse_free(nvlist_t *nvl);
     66 extern int reparse_parse(const char *reparse_data, nvlist_t *nvl);
     67 extern int reparse_validate(const char *reparse_data);
     68 
     69 #ifdef _KERNEL
     70 extern int reparse_kderef(const char *svc_type, const char *svc_data,
     71 			char *buf, size_t *bufsz);
     72 extern int reparse_vnode_parse(vnode_t *vp, nvlist_t *nvl);
     73 #else
     74 extern int reparse_add(nvlist_t *nvl, const char *svc_type,
     75 			const char *svc_data);
     76 extern int reparse_remove(nvlist_t *nvl, const char *svc_type);
     77 extern int reparse_unparse(nvlist_t *nvl, char **stringp);
     78 extern int reparse_create(const char *path, const char *string);
     79 extern int reparse_delete(const char *path);
     80 extern int reparse_deref(const char *svc_type, const char *svc_data,
     81 			char *buf, size_t *bufsz);
     82 #endif
     83 
     84 #ifdef __cplusplus
     85 }
     86 #endif
     87 
     88 #endif	/* _FS_REPARSE_H */
     89