Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * include/linux/nfsd/export.h | |
3 | * | |
4 | * Public declarations for NFS exports. The definitions for the | |
5 | * syscall interface are in nfsctl.h | |
6 | * | |
7 | * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de> | |
8 | */ | |
9 | ||
10 | #ifndef NFSD_EXPORT_H | |
11 | #define NFSD_EXPORT_H | |
12 | ||
1da177e4 | 13 | # include <linux/types.h> |
3187cedf | 14 | #ifdef __KERNEL__ |
1da177e4 LT |
15 | # include <linux/in.h> |
16 | #endif | |
17 | ||
18 | /* | |
19 | * Important limits for the exports stuff. | |
20 | */ | |
21 | #define NFSCLNT_IDMAX 1024 | |
22 | #define NFSCLNT_ADDRMAX 16 | |
23 | #define NFSCLNT_KEYMAX 32 | |
24 | ||
25 | /* | |
26 | * Export flags. | |
27 | */ | |
28 | #define NFSEXP_READONLY 0x0001 | |
29 | #define NFSEXP_INSECURE_PORT 0x0002 | |
30 | #define NFSEXP_ROOTSQUASH 0x0004 | |
31 | #define NFSEXP_ALLSQUASH 0x0008 | |
32 | #define NFSEXP_ASYNC 0x0010 | |
33 | #define NFSEXP_GATHERED_WRITES 0x0020 | |
34 | /* 40 80 100 currently unused */ | |
35 | #define NFSEXP_NOHIDE 0x0200 | |
36 | #define NFSEXP_NOSUBTREECHECK 0x0400 | |
37 | #define NFSEXP_NOAUTHNLM 0x0800 /* Don't authenticate NLM requests - just trust */ | |
38 | #define NFSEXP_MSNFS 0x1000 /* do silly things that MS clients expect */ | |
39 | #define NFSEXP_FSID 0x2000 | |
40 | #define NFSEXP_CROSSMOUNT 0x4000 | |
41 | #define NFSEXP_NOACL 0x8000 /* reserved for possible ACL related use */ | |
42 | #define NFSEXP_ALLFLAGS 0xFE3F | |
43 | ||
e677bfe4 | 44 | /* The flags that may vary depending on security flavor: */ |
1269bc69 BF |
45 | #define NFSEXP_SECINFO_FLAGS (NFSEXP_READONLY | NFSEXP_ROOTSQUASH \ |
46 | | NFSEXP_ALLSQUASH) | |
1da177e4 LT |
47 | |
48 | #ifdef __KERNEL__ | |
49 | ||
93346919 MN |
50 | /* |
51 | * FS Locations | |
52 | */ | |
53 | ||
54 | #define MAX_FS_LOCATIONS 128 | |
55 | ||
56 | struct nfsd4_fs_location { | |
57 | char *hosts; /* colon separated list of hosts */ | |
58 | char *path; /* slash separated list of path components */ | |
59 | }; | |
60 | ||
61 | struct nfsd4_fs_locations { | |
62 | uint32_t locations_count; | |
63 | struct nfsd4_fs_location *locations; | |
64 | /* If we're not actually serving this data ourselves (only providing a | |
65 | * list of replicas that do serve it) then we set "migrated": */ | |
66 | int migrated; | |
67 | }; | |
68 | ||
e677bfe4 AA |
69 | /* |
70 | * We keep an array of pseudoflavors with the export, in order from most | |
71 | * to least preferred. For the forseeable future, we don't expect more | |
72 | * than the eight pseudoflavors null, unix, krb5, krb5i, krb5p, skpm3, | |
73 | * spkm3i, and spkm3p (and using all 8 at once should be rare). | |
74 | */ | |
75 | #define MAX_SECINFO_LIST 8 | |
76 | ||
77 | struct exp_flavor_info { | |
78 | u32 pseudoflavor; | |
79 | u32 flags; | |
80 | }; | |
81 | ||
1da177e4 LT |
82 | struct svc_export { |
83 | struct cache_head h; | |
84 | struct auth_domain * ex_client; | |
85 | int ex_flags; | |
54775491 JB |
86 | struct path ex_path; |
87 | char *ex_pathname; | |
1da177e4 LT |
88 | uid_t ex_anon_uid; |
89 | gid_t ex_anon_gid; | |
90 | int ex_fsid; | |
af6a4e28 | 91 | unsigned char * ex_uuid; /* 16 byte fsid */ |
93346919 | 92 | struct nfsd4_fs_locations ex_fslocs; |
e677bfe4 AA |
93 | int ex_nflavors; |
94 | struct exp_flavor_info ex_flavors[MAX_SECINFO_LIST]; | |
1da177e4 LT |
95 | }; |
96 | ||
97 | /* an "export key" (expkey) maps a filehandlefragement to an | |
af6a4e28 N |
98 | * svc_export for a given client. There can be several per export, |
99 | * for the different fsid types. | |
1da177e4 LT |
100 | */ |
101 | struct svc_expkey { | |
102 | struct cache_head h; | |
103 | ||
104 | struct auth_domain * ek_client; | |
105 | int ek_fsidtype; | |
af6a4e28 | 106 | u32 ek_fsid[6]; |
1da177e4 | 107 | |
e83aece3 | 108 | struct path ek_path; |
1da177e4 LT |
109 | }; |
110 | ||
111 | #define EX_SECURE(exp) (!((exp)->ex_flags & NFSEXP_INSECURE_PORT)) | |
112 | #define EX_ISSYNC(exp) (!((exp)->ex_flags & NFSEXP_ASYNC)) | |
1da177e4 LT |
113 | #define EX_NOHIDE(exp) ((exp)->ex_flags & NFSEXP_NOHIDE) |
114 | #define EX_WGATHER(exp) ((exp)->ex_flags & NFSEXP_GATHERED_WRITES) | |
115 | ||
c7d51402 | 116 | int nfsexp_flags(struct svc_rqst *rqstp, struct svc_export *exp); |
32c1eb0c | 117 | __be32 check_nfsd_access(struct svc_export *exp, struct svc_rqst *rqstp); |
1da177e4 LT |
118 | |
119 | /* | |
120 | * Function declarations | |
121 | */ | |
dbf847ec | 122 | int nfsd_export_init(void); |
1da177e4 LT |
123 | void nfsd_export_shutdown(void); |
124 | void nfsd_export_flush(void); | |
125 | void exp_readlock(void); | |
126 | void exp_readunlock(void); | |
0989a788 | 127 | struct svc_export * rqst_exp_get_by_name(struct svc_rqst *, |
91c9fa8f | 128 | struct path *); |
0989a788 | 129 | struct svc_export * rqst_exp_parent(struct svc_rqst *, |
e64c390c | 130 | struct path *); |
1da177e4 LT |
131 | int exp_rootfh(struct auth_domain *, |
132 | char *path, struct knfsd_fh *, int maxsize); | |
df547efb | 133 | __be32 exp_pseudoroot(struct svc_rqst *, struct svc_fh *); |
63f10311 | 134 | __be32 nfserrno(int errno); |
1da177e4 | 135 | |
74cae61a | 136 | extern struct cache_detail svc_export_cache; |
1da177e4 LT |
137 | |
138 | static inline void exp_put(struct svc_export *exp) | |
139 | { | |
baab935f | 140 | cache_put(&exp->h, &svc_export_cache); |
1da177e4 LT |
141 | } |
142 | ||
143 | static inline void exp_get(struct svc_export *exp) | |
144 | { | |
145 | cache_get(&exp->h); | |
146 | } | |
0989a788 | 147 | struct svc_export * rqst_exp_find(struct svc_rqst *, int, u32 *); |
1da177e4 LT |
148 | |
149 | #endif /* __KERNEL__ */ | |
150 | ||
151 | #endif /* NFSD_EXPORT_H */ | |
152 |