xref: /freebsd/sys/fs/nfs/nfsdport.h (revision a50d73d5782a351ad83e8d1f84d11720a12e70d3)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3  *
4  * Copyright (c) 2009 Rick Macklem, University of Guelph
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  *
28  * $FreeBSD$
29  */
30 
31 /*
32  * These macros handle nfsvattr fields. They look a bit silly here, but
33  * are quite different for the Darwin port.
34  */
35 #define	NFSVNO_ATTRINIT(n)		(VATTR_NULL(&((n)->na_vattr)))
36 #define	NFSVNO_SETATTRVAL(n, f, v)	((n)->na_##f = (v))
37 #define	NFSVNO_SETACTIVE(n, f)
38 #define	NFSVNO_UNSET(n, f)		((n)->na_##f = VNOVAL)
39 #define	NFSVNO_NOTSETMODE(n)		((n)->na_mode == ((mode_t)VNOVAL))
40 #define	NFSVNO_ISSETMODE(n)		((n)->na_mode != ((mode_t)VNOVAL))
41 #define	NFSVNO_NOTSETUID(n)		((n)->na_uid == ((uid_t)VNOVAL))
42 #define	NFSVNO_ISSETUID(n)		((n)->na_uid != ((uid_t)VNOVAL))
43 #define	NFSVNO_NOTSETGID(n)		((n)->na_gid == ((gid_t)VNOVAL))
44 #define	NFSVNO_ISSETGID(n)		((n)->na_gid != ((gid_t)VNOVAL))
45 #define	NFSVNO_NOTSETSIZE(n)		((n)->na_size == VNOVAL)
46 #define	NFSVNO_ISSETSIZE(n)		((n)->na_size != VNOVAL)
47 #define	NFSVNO_NOTSETATIME(n)		((n)->na_atime.tv_sec == VNOVAL)
48 #define	NFSVNO_ISSETATIME(n)		((n)->na_atime.tv_sec != VNOVAL)
49 #define	NFSVNO_NOTSETMTIME(n)		((n)->na_mtime.tv_sec == VNOVAL)
50 #define	NFSVNO_ISSETMTIME(n)		((n)->na_mtime.tv_sec != VNOVAL)
51 
52 /*
53  * This structure acts as a "catch-all" for information that
54  * needs to be returned by nfsd_fhtovp().
55  */
56 struct nfsexstuff {
57 	uint64_t nes_exflag;			/* export flags */
58 	int	nes_numsecflavor;		/* # of security flavors */
59 	int	nes_secflavors[MAXSECFLAVORS];	/* and the flavors */
60 };
61 
62 /*
63  * These are NO-OPS for BSD until Isilon upstreams EXITCODE support.
64  * EXITCODE is an in-memory ring buffer that holds the routines failing status.
65  * This is a valuable tool to use when debugging and analyzing issues.
66  * In addition to recording a routine's failing status, it offers
67  * logging of routines for call stack tracing.
68  * EXITCODE should be used only in routines that return a true errno value, as
69  * that value will be formatted to a displayable errno string.  Routines that
70  * return regular int status that are not true errno should not set EXITCODE.
71  * If you want to log routine tracing, you can add EXITCODE(0) to any routine.
72  * NFS extended the EXITCODE with EXITCODE2 to record either the routine's
73  * exit errno status or the nd_repstat.
74  */
75 #define	NFSEXITCODE(error)
76 #define	NFSEXITCODE2(error, nd)
77 
78 #define	NFSVNO_EXINIT(e)		((e)->nes_exflag = 0)
79 #define	NFSVNO_EXPORTED(e)		((e)->nes_exflag & MNT_EXPORTED)
80 #define	NFSVNO_EXRDONLY(e)		((e)->nes_exflag & MNT_EXRDONLY)
81 #define	NFSVNO_EXPORTANON(e)		((e)->nes_exflag & MNT_EXPORTANON)
82 #define	NFSVNO_EXSTRICTACCESS(e)	((e)->nes_exflag & MNT_EXSTRICTACCESS)
83 #define	NFSVNO_EXV4ONLY(e)		((e)->nes_exflag & MNT_EXV4ONLY)
84 #define	NFSVNO_EXTLS(e)			((e)->nes_exflag & MNT_EXTLS)
85 #define	NFSVNO_EXTLSCERT(e)		((e)->nes_exflag & MNT_EXTLSCERT)
86 #define	NFSVNO_EXTLSCERTUSER(e)		((e)->nes_exflag & MNT_EXTLSCERTUSER)
87 
88 #define	NFSVNO_SETEXRDONLY(e)	((e)->nes_exflag = (MNT_EXPORTED|MNT_EXRDONLY))
89 
90 #define	NFSVNO_CMPFH(f1, f2)						\
91     (fsidcmp(&(f1)->fh_fsid, &(f2)->fh_fsid) == 0 &&			\
92      bcmp(&(f1)->fh_fid, &(f2)->fh_fid, sizeof(struct fid)) == 0)
93 
94 #define	NFSLOCKHASH(f) 							\
95 	(&NFSD_VNET(nfslockhash)[nfsrv_hashfh(f) % nfsrv_lockhashsize])
96 
97 #define	NFSFPVNODE(f)	((f)->f_vnode)
98 #define	NFSFPCRED(f)	((f)->f_cred)
99 #define	NFSFPFLAG(f)	((f)->f_flag)
100 
101 #define	NFSNAMEICNDSET(n, c, o, f)	do {				\
102 	(n)->cn_cred = (c);						\
103 	(n)->cn_nameiop = (o);						\
104 	(n)->cn_flags = (f);						\
105     } while (0)
106 
107 #define	NFSPATHLEN_T	size_t
108 
109 /*
110  * These are set to the minimum and maximum size of a server file
111  * handle.
112  */
113 #define	NFSRV_MINFH	(sizeof (fhandle_t))
114 #define	NFSRV_MAXFH	(sizeof (fhandle_t))
115 
116 /* Use this macro for debug printfs. */
117 #define	NFSD_DEBUG(level, ...)	do {					\
118 		if (nfsd_debuglevel >= (level))				\
119 			printf(__VA_ARGS__);				\
120 	} while (0)
121