Commit | Line | Data |
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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
1da177e4 | 2 | /* |
1da177e4 LT |
3 | * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de> |
4 | */ | |
1da177e4 LT |
5 | #ifndef NFSD_EXPORT_H |
6 | #define NFSD_EXPORT_H | |
7 | ||
9c69de4c | 8 | #include <linux/sunrpc/cache.h> |
616d1ca5 | 9 | #include <uapi/linux/nfsd/export.h> |
4bc66037 | 10 | #include <linux/nfs4.h> |
1da177e4 | 11 | |
9c69de4c CH |
12 | struct knfsd_fh; |
13 | struct svc_fh; | |
14 | struct svc_rqst; | |
15 | ||
93346919 MN |
16 | /* |
17 | * FS Locations | |
18 | */ | |
19 | ||
20 | #define MAX_FS_LOCATIONS 128 | |
21 | ||
22 | struct nfsd4_fs_location { | |
23 | char *hosts; /* colon separated list of hosts */ | |
24 | char *path; /* slash separated list of path components */ | |
25 | }; | |
26 | ||
27 | struct nfsd4_fs_locations { | |
28 | uint32_t locations_count; | |
29 | struct nfsd4_fs_location *locations; | |
30 | /* If we're not actually serving this data ourselves (only providing a | |
31 | * list of replicas that do serve it) then we set "migrated": */ | |
32 | int migrated; | |
33 | }; | |
34 | ||
e677bfe4 AA |
35 | /* |
36 | * We keep an array of pseudoflavors with the export, in order from most | |
25985edc | 37 | * to least preferred. For the foreseeable future, we don't expect more |
e677bfe4 AA |
38 | * than the eight pseudoflavors null, unix, krb5, krb5i, krb5p, skpm3, |
39 | * spkm3i, and spkm3p (and using all 8 at once should be rare). | |
40 | */ | |
41 | #define MAX_SECINFO_LIST 8 | |
94eb3689 | 42 | #define EX_UUID_LEN 16 |
e677bfe4 AA |
43 | |
44 | struct exp_flavor_info { | |
45 | u32 pseudoflavor; | |
46 | u32 flags; | |
47 | }; | |
48 | ||
1da177e4 LT |
49 | struct svc_export { |
50 | struct cache_head h; | |
51 | struct auth_domain * ex_client; | |
52 | int ex_flags; | |
54775491 | 53 | struct path ex_path; |
4c1e1b34 EB |
54 | kuid_t ex_anon_uid; |
55 | kgid_t ex_anon_gid; | |
1da177e4 | 56 | int ex_fsid; |
af6a4e28 | 57 | unsigned char * ex_uuid; /* 16 byte fsid */ |
93346919 | 58 | struct nfsd4_fs_locations ex_fslocs; |
1f53146d | 59 | uint32_t ex_nflavors; |
e677bfe4 | 60 | struct exp_flavor_info ex_flavors[MAX_SECINFO_LIST]; |
8a4c3926 | 61 | u32 ex_layout_types; |
9cf514cc | 62 | struct nfsd4_deviceid_map *ex_devid_map; |
db3a3532 | 63 | struct cache_detail *cd; |
1da177e4 LT |
64 | }; |
65 | ||
66 | /* an "export key" (expkey) maps a filehandlefragement to an | |
af6a4e28 N |
67 | * svc_export for a given client. There can be several per export, |
68 | * for the different fsid types. | |
1da177e4 LT |
69 | */ |
70 | struct svc_expkey { | |
71 | struct cache_head h; | |
72 | ||
73 | struct auth_domain * ek_client; | |
74 | int ek_fsidtype; | |
af6a4e28 | 75 | u32 ek_fsid[6]; |
1da177e4 | 76 | |
e83aece3 | 77 | struct path ek_path; |
1da177e4 LT |
78 | }; |
79 | ||
1da177e4 | 80 | #define EX_ISSYNC(exp) (!((exp)->ex_flags & NFSEXP_ASYNC)) |
1da177e4 LT |
81 | #define EX_NOHIDE(exp) ((exp)->ex_flags & NFSEXP_NOHIDE) |
82 | #define EX_WGATHER(exp) ((exp)->ex_flags & NFSEXP_GATHERED_WRITES) | |
83 | ||
c7d51402 | 84 | int nfsexp_flags(struct svc_rqst *rqstp, struct svc_export *exp); |
32c1eb0c | 85 | __be32 check_nfsd_access(struct svc_export *exp, struct svc_rqst *rqstp); |
1da177e4 LT |
86 | |
87 | /* | |
88 | * Function declarations | |
89 | */ | |
b89109be SK |
90 | int nfsd_export_init(struct net *); |
91 | void nfsd_export_shutdown(struct net *); | |
b3853e0e | 92 | void nfsd_export_flush(struct net *); |
0989a788 | 93 | struct svc_export * rqst_exp_get_by_name(struct svc_rqst *, |
91c9fa8f | 94 | struct path *); |
0989a788 | 95 | struct svc_export * rqst_exp_parent(struct svc_rqst *, |
e64c390c | 96 | struct path *); |
ed748aac | 97 | struct svc_export * rqst_find_fsidzero_export(struct svc_rqst *); |
b3853e0e | 98 | int exp_rootfh(struct net *, struct auth_domain *, |
1da177e4 | 99 | char *path, struct knfsd_fh *, int maxsize); |
df547efb | 100 | __be32 exp_pseudoroot(struct svc_rqst *, struct svc_fh *); |
63f10311 | 101 | __be32 nfserrno(int errno); |
1da177e4 | 102 | |
1da177e4 LT |
103 | static inline void exp_put(struct svc_export *exp) |
104 | { | |
71234978 | 105 | cache_put(&exp->h, exp->cd); |
1da177e4 LT |
106 | } |
107 | ||
bf18f163 | 108 | static inline struct svc_export *exp_get(struct svc_export *exp) |
1da177e4 LT |
109 | { |
110 | cache_get(&exp->h); | |
bf18f163 | 111 | return exp; |
1da177e4 | 112 | } |
0989a788 | 113 | struct svc_export * rqst_exp_find(struct svc_rqst *, int, u32 *); |
1da177e4 | 114 | |
1da177e4 | 115 | #endif /* NFSD_EXPORT_H */ |