xref: /illumos-gate/usr/src/uts/common/sharefs/share.h (revision 4283d10e18fc3904736c7c067fb29de9bb67d25d)
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 /*
23  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #ifndef _SHAREFS_SHARE_H
28 #define	_SHAREFS_SHARE_H
29 
30 #ifdef __cplusplus
31 extern "C" {
32 #endif
33 
34 /*
35  * struct share defines the format of an exported filesystem.
36  *
37  * It is also the interface between the userland tools and
38  * the kernel.
39  */
40 typedef struct share {
41 	char		*sh_path;
42 	char		*sh_res;
43 	char		*sh_fstype;
44 	char		*sh_opts;
45 	char		*sh_descr;
46 	size_t		sh_size;
47 	struct share	*sh_next;
48 } share_t;
49 
50 #ifdef _SYSCALL32
51 typedef struct share32 {
52 	caddr32_t	sh_path;
53 	caddr32_t	sh_res;
54 	caddr32_t	sh_fstype;
55 	caddr32_t	sh_opts;
56 	caddr32_t	sh_descr;
57 	size32_t	sh_size;
58 	caddr32_t	sh_next;
59 } share32_t;
60 #endif /* _SYSCALL32 */
61 
62 #define	SHARETAB	"/etc/dfs/sharetab"
63 #define	MAXBUFSIZE	65536
64 
65 /*
66  * Flavors of the system call.
67  */
68 enum sharefs_sys_op { SHAREFS_ADD, SHAREFS_REMOVE, SHAREFS_REPLACE };
69 
70 #ifdef _KERNEL
71 
72 extern int sharefs(enum sharefs_sys_op opcode, struct share *sh,
73     uint32_t iMaxLen);
74 
75 #else
76 
77 extern int _sharefs(enum sharefs_sys_op opcode, struct share *sh);
78 
79 #endif
80 
81 #ifdef __cplusplus
82 }
83 #endif
84 
85 #endif /* !_SHAREFS_SHARE_H */
86