1 /*
2  * Copyright (c) 2000-2001, Boris Popov
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  * 3. All advertising materials mentioning features or use of this software
14  *    must display the following acknowledgement:
15  *    This product includes software developed by Boris Popov.
16  * 4. Neither the name of the author nor the names of any co-contributors
17  *    may be used to endorse or promote products derived from this software
18  *    without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30  * SUCH DAMAGE.
31  *
32  * $Id: smbfs.h,v 1.30.100.1 2005/05/27 02:35:28 lindak Exp $
33  */
34 
35 /*
36  * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
37  */
38 
39 #ifndef	_SMBFS_SMBFS_H
40 #define	_SMBFS_SMBFS_H
41 
42 /*
43  * FS-specific VFS structures for smbfs.
44  * (per-mount stuff, etc.)
45  *
46  * This file used to have mount args stuff,
47  * but that's now in sys/fs/smbfs_mount.h
48  */
49 
50 #include <sys/param.h>
51 #include <sys/fstyp.h>
52 #include <sys/avl.h>
53 #include <sys/list.h>
54 #include <sys/t_lock.h>
55 #include <sys/vfs.h>
56 #include <sys/vfs_opreg.h>
57 #include <sys/fs/smbfs_mount.h>
58 #include <sys/zone.h>
59 
60 /*
61  * Path component length
62  *
63  * The generic fs code uses MAXNAMELEN to represent
64  * what the largest component length is, but note:
65  * that length DOES include the terminating NULL.
66  * SMB_MAXFNAMELEN does NOT include the NULL.
67  */
68 #define	SMB_MAXFNAMELEN		(MAXNAMELEN-1)	/* 255 */
69 
70 /*
71  * SM_MAX_STATFSTIME is the maximum time to cache statvfs data. Since this
72  * should be a fast call on the server, the time the data cached is short.
73  * That lets the cache handle bursts of statvfs() requests without generating
74  * lots of network traffic.
75  */
76 #define	SM_MAX_STATFSTIME 2
77 
78 /* Mask values for smbmount structure sm_status field */
79 #define	SM_STATUS_STATFS_BUSY 0x00000001 /* statvfs is in progress */
80 #define	SM_STATUS_STATFS_WANT 0x00000002 /* statvfs wakeup is wanted */
81 #define	SM_STATUS_TIMEO 0x00000004 /* this mount is not responding */
82 #define	SM_STATUS_DEAD	0x00000010 /* connection gone - unmount this */
83 
84 extern const struct fs_operation_def	smbfs_vnodeops_template[];
85 extern struct vnodeops			*smbfs_vnodeops;
86 
87 struct smbnode;
88 struct smb_share;
89 
90 /*
91  * The values for smi_flags (from nfs_clnt.h)
92  */
93 #define	SMI_INT		0x04		/* interrupts allowed */
94 #define	SMI_NOAC	0x10		/* don't cache attributes */
95 #define	SMI_LLOCK	0x80		/* local locking only */
96 #define	SMI_ACL		0x2000		/* share supports ACLs */
97 #define	SMI_DIRECTIO	0x40000		/* do direct I/O */
98 #define	SMI_EXTATTR	0x80000		/* share supports ext. attrs */
99 #define	SMI_DEAD	0x200000	/* mount has been terminated */
100 
101 /*
102  * Stuff returned by smbfs_smb_qfsattr
103  * See [CIFS] SMB_QUERY_FS_ATTRIBUTE_INFO
104  */
105 typedef struct smb_fs_attr_info {
106 	uint32_t	fsa_aflags;	/* Attr. flags [CIFS 4.1.6.6] */
107 	uint32_t	fsa_maxname;	/* max. component length */
108 	char		fsa_tname[FSTYPSZ]; /* type name, i.e. "NTFS" */
109 } smb_fs_attr_info_t;
110 
111 /*
112  * Corresponds to Darwin: struct smbmount
113  */
114 typedef struct smbmntinfo {
115 	struct vfs		*smi_vfsp;	/* mount back pointer to vfs */
116 	struct smbnode		*smi_root;	/* the root node */
117 	struct smb_share	*smi_share;	/* netsmb SMB share conn data */
118 	struct taskq		*smi_taskq;	/* for async work */
119 	kmutex_t		smi_lock;	/* mutex for flags, etc. */
120 	uint32_t		smi_flags;	/* NFS-derived flag bits */
121 	uint32_t		smi_status;	/* status bits for this mount */
122 	hrtime_t		smi_statfstime;	/* sm_statvfsbuf cache time */
123 	statvfs64_t		smi_statvfsbuf;	/* cached statvfs data */
124 	kcondvar_t		smi_statvfs_cv;
125 	smb_fs_attr_info_t	smi_fsa;	/* SMB FS attributes. */
126 #define	smi_fsattr		smi_fsa.fsa_aflags
127 
128 	/*
129 	 * The smbfs node cache for this mount.
130 	 * Named "hash" for historical reasons.
131 	 * See smbfs_node.h for details.
132 	 */
133 	avl_tree_t		smi_hash_avl;
134 	krwlock_t		smi_hash_lk;
135 
136 	/*
137 	 * Kstat statistics
138 	 */
139 	struct kstat    *smi_io_kstats;
140 	struct kstat    *smi_ro_kstats;
141 
142 	/*
143 	 * Zones support.
144 	 */
145 	zone_ref_t		smi_zone_ref;	/* Zone FS is mounted in */
146 	list_node_t		smi_zone_node;	/* Link to per-zone smi list */
147 	/* Lock for the list is: smi_globals_t -> smg_lock */
148 
149 	/*
150 	 * Stuff copied or derived from the mount args
151 	 */
152 	uid_t		smi_uid;		/* user id */
153 	gid_t		smi_gid;		/* group id */
154 	mode_t		smi_fmode;		/* mode for files */
155 	mode_t		smi_dmode;		/* mode for dirs */
156 
157 	hrtime_t	smi_acregmin;	/* min time to hold cached file attr */
158 	hrtime_t	smi_acregmax;	/* max time to hold cached file attr */
159 	hrtime_t	smi_acdirmin;	/* min time to hold cached dir attr */
160 	hrtime_t	smi_acdirmax;	/* max time to hold cached dir attr */
161 } smbmntinfo_t;
162 
163 /*
164  * Attribute cache timeout defaults (in seconds).
165  */
166 #define	SMBFS_ACREGMIN	3	/* min secs to hold cached file attr */
167 #define	SMBFS_ACREGMAX	60	/* max secs to hold cached file attr */
168 #define	SMBFS_ACDIRMIN	30	/* min secs to hold cached dir attr */
169 #define	SMBFS_ACDIRMAX	60	/* max secs to hold cached dir attr */
170 /* and limits for the mount options */
171 #define	SMBFS_ACMINMAX	600	/* 10 min. is longest min timeout */
172 #define	SMBFS_ACMAXMAX	3600	/* 1 hr is longest max timeout */
173 
174 /*
175  * High-res time is nanoseconds.
176  */
177 #define	SEC2HR(sec)	((sec) * (hrtime_t)NANOSEC)
178 
179 /*
180  * vnode pointer to mount info
181  */
182 #define	VTOSMI(vp)	((smbmntinfo_t *)(((vp)->v_vfsp)->vfs_data))
183 #define	VFTOSMI(vfsp)	((smbmntinfo_t *)((vfsp)->vfs_data))
184 #define	SMBINTR(vp)	(VTOSMI(vp)->smi_flags & SMI_INT)
185 
186 #endif	/* _SMBFS_SMBFS_H */
187