xref: /freebsd/sys/fs/nfs/nfsdport.h (revision cc16dea626cf2fc80cde667ac4798065108e596c)
1 /*-
2  * Copyright (c) 2009 Rick Macklem, University of Guelph
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  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  *
26  * $FreeBSD$
27  */
28 
29 /*
30  * These macros handle nfsvattr fields. They look a bit silly here, but
31  * are quite different for the Darwin port.
32  */
33 #define	NFSVNO_ATTRINIT(n)		(VATTR_NULL(&((n)->na_vattr)))
34 #define	NFSVNO_SETATTRVAL(n, f, v)	((n)->na_##f = (v))
35 #define	NFSVNO_SETACTIVE(n, f)
36 #define	NFSVNO_UNSET(n, f)		((n)->na_##f = VNOVAL)
37 #define	NFSVNO_NOTSETMODE(n)		((n)->na_mode == ((mode_t)VNOVAL))
38 #define	NFSVNO_ISSETMODE(n)		((n)->na_mode != ((mode_t)VNOVAL))
39 #define	NFSVNO_NOTSETUID(n)		((n)->na_uid == ((uid_t)VNOVAL))
40 #define	NFSVNO_ISSETUID(n)		((n)->na_uid != ((uid_t)VNOVAL))
41 #define	NFSVNO_NOTSETGID(n)		((n)->na_gid == ((gid_t)VNOVAL))
42 #define	NFSVNO_ISSETGID(n)		((n)->na_gid != ((gid_t)VNOVAL))
43 #define	NFSVNO_NOTSETSIZE(n)		((n)->na_size == VNOVAL)
44 #define	NFSVNO_ISSETSIZE(n)		((n)->na_size != VNOVAL)
45 #define	NFSVNO_NOTSETATIME(n)		((n)->na_atime.tv_sec == VNOVAL)
46 #define	NFSVNO_ISSETATIME(n)		((n)->na_atime.tv_sec != VNOVAL)
47 #define	NFSVNO_NOTSETMTIME(n)		((n)->na_mtime.tv_sec == VNOVAL)
48 #define	NFSVNO_ISSETMTIME(n)		((n)->na_mtime.tv_sec != VNOVAL)
49 
50 /*
51  * This structure acts as a "catch-all" for information that
52  * needs to be returned by nfsd_fhtovp().
53  */
54 struct nfsexstuff {
55 	int	nes_exflag;			/* export flags */
56 	int	nes_numsecflavor;		/* # of security flavors */
57 	int	nes_secflavors[MAXSECFLAVORS];	/* and the flavors */
58 };
59 
60 /*
61  * These are NO-OPS for BSD until Isilon upstreams EXITCODE support.
62  * EXITCODE is an in-memory ring buffer that holds the routines failing status.
63  * This is a valuable tool to use when debugging and analyzing issues.
64  * In addition to recording a routine's failing status, it offers
65  * logging of routines for call stack tracing.
66  * EXITCODE should be used only in routines that return a true errno value, as
67  * that value will be formatted to a displayable errno string.  Routines that
68  * return regular int status that are not true errno should not set EXITCODE.
69  * If you want to log routine tracing, you can add EXITCODE(0) to any routine.
70  * NFS extended the EXITCODE with EXITCODE2 to record either the routine's
71  * exit errno status or the nd_repstat.
72  */
73 #define	NFSEXITCODE(error)
74 #define	NFSEXITCODE2(error, nd)
75 
76 #define	NFSVNO_EXINIT(e)		((e)->nes_exflag = 0)
77 #define	NFSVNO_EXPORTED(e)		((e)->nes_exflag & MNT_EXPORTED)
78 #define	NFSVNO_EXRDONLY(e)		((e)->nes_exflag & MNT_EXRDONLY)
79 #define	NFSVNO_EXPORTANON(e)		((e)->nes_exflag & MNT_EXPORTANON)
80 #define	NFSVNO_EXSTRICTACCESS(e)	((e)->nes_exflag & MNT_EXSTRICTACCESS)
81 #define	NFSVNO_EXV4ONLY(e)		((e)->nes_exflag & MNT_EXV4ONLY)
82 
83 #define	NFSVNO_SETEXRDONLY(e)	((e)->nes_exflag = (MNT_EXPORTED|MNT_EXRDONLY))
84 
85 #define	NFSVNO_CMPFH(f1, f2)						\
86     ((f1)->fh_fsid.val[0] == (f2)->fh_fsid.val[0] &&			\
87      (f1)->fh_fsid.val[1] == (f2)->fh_fsid.val[1] &&			\
88      bcmp(&(f1)->fh_fid, &(f2)->fh_fid, sizeof(struct fid)) == 0)
89 
90 #define	NFSLOCKHASH(f) 							\
91 	(&nfslockhash[nfsrv_hashfh(f) % NFSLOCKHASHSIZE])
92 
93 #define	NFSFPVNODE(f)	((struct vnode *)((f)->f_data))
94 #define	NFSFPCRED(f)	((f)->f_cred)
95 #define	NFSFPFLAG(f)	((f)->f_flag)
96 
97 #define	NFSNAMEICNDSET(n, c, o, f)	do {				\
98 	(n)->cn_cred = (c);						\
99 	(n)->cn_nameiop = (o);						\
100 	(n)->cn_flags = (f);						\
101     } while (0)
102 
103 /*
104  * A little bit of Darwin vfs kpi.
105  */
106 #define	vnode_mount(v)	((v)->v_mount)
107 #define	vfs_statfs(m)	(&((m)->mnt_stat))
108 
109 #define	NFSPATHLEN_T	size_t
110 
111 /*
112  * These are set to the minimum and maximum size of a server file
113  * handle.
114  */
115 #define	NFSRV_MINFH	(sizeof (fhandle_t))
116 #define	NFSRV_MAXFH	(sizeof (fhandle_t))
117 
118