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1/*
2 * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de>
3 */
4#ifndef NFSD_EXPORT_H
5#define NFSD_EXPORT_H
6
7#include <linux/sunrpc/cache.h>
8#include <uapi/linux/nfsd/export.h>
9#include <linux/nfs4.h>
10
11struct knfsd_fh;
12struct svc_fh;
13struct svc_rqst;
14
15/*
16 * FS Locations
17 */
18
19#define MAX_FS_LOCATIONS 128
20
21struct nfsd4_fs_location {
22 char *hosts; /* colon separated list of hosts */
23 char *path; /* slash separated list of path components */
24};
25
26struct nfsd4_fs_locations {
27 uint32_t locations_count;
28 struct nfsd4_fs_location *locations;
29/* If we're not actually serving this data ourselves (only providing a
30 * list of replicas that do serve it) then we set "migrated": */
31 int migrated;
32};
33
34/*
35 * We keep an array of pseudoflavors with the export, in order from most
36 * to least preferred. For the foreseeable future, we don't expect more
37 * than the eight pseudoflavors null, unix, krb5, krb5i, krb5p, skpm3,
38 * spkm3i, and spkm3p (and using all 8 at once should be rare).
39 */
40#define MAX_SECINFO_LIST 8
41#define EX_UUID_LEN 16
42
43struct exp_flavor_info {
44 u32 pseudoflavor;
45 u32 flags;
46};
47
48struct svc_export {
49 struct cache_head h;
50 struct auth_domain * ex_client;
51 int ex_flags;
52 struct path ex_path;
53 kuid_t ex_anon_uid;
54 kgid_t ex_anon_gid;
55 int ex_fsid;
56 unsigned char * ex_uuid; /* 16 byte fsid */
57 struct nfsd4_fs_locations ex_fslocs;
58 uint32_t ex_nflavors;
59 struct exp_flavor_info ex_flavors[MAX_SECINFO_LIST];
60 u32 ex_layout_types;
61 struct nfsd4_deviceid_map *ex_devid_map;
62 struct cache_detail *cd;
63};
64
65/* an "export key" (expkey) maps a filehandlefragement to an
66 * svc_export for a given client. There can be several per export,
67 * for the different fsid types.
68 */
69struct svc_expkey {
70 struct cache_head h;
71
72 struct auth_domain * ek_client;
73 int ek_fsidtype;
74 u32 ek_fsid[6];
75
76 struct path ek_path;
77};
78
79#define EX_ISSYNC(exp) (!((exp)->ex_flags & NFSEXP_ASYNC))
80#define EX_NOHIDE(exp) ((exp)->ex_flags & NFSEXP_NOHIDE)
81#define EX_WGATHER(exp) ((exp)->ex_flags & NFSEXP_GATHERED_WRITES)
82
83int nfsexp_flags(struct svc_rqst *rqstp, struct svc_export *exp);
84__be32 check_nfsd_access(struct svc_export *exp, struct svc_rqst *rqstp);
85
86/*
87 * Function declarations
88 */
89int nfsd_export_init(struct net *);
90void nfsd_export_shutdown(struct net *);
91void nfsd_export_flush(struct net *);
92struct svc_export * rqst_exp_get_by_name(struct svc_rqst *,
93 struct path *);
94struct svc_export * rqst_exp_parent(struct svc_rqst *,
95 struct path *);
96struct svc_export * rqst_find_fsidzero_export(struct svc_rqst *);
97int exp_rootfh(struct net *, struct auth_domain *,
98 char *path, struct knfsd_fh *, int maxsize);
99__be32 exp_pseudoroot(struct svc_rqst *, struct svc_fh *);
100__be32 nfserrno(int errno);
101
102static inline void exp_put(struct svc_export *exp)
103{
104 cache_put(&exp->h, exp->cd);
105}
106
107static inline struct svc_export *exp_get(struct svc_export *exp)
108{
109 cache_get(&exp->h);
110 return exp;
111}
112struct svc_export * rqst_exp_find(struct svc_rqst *, int, u32 *);
113
114#endif /* NFSD_EXPORT_H */
1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de>
4 */
5#ifndef NFSD_EXPORT_H
6#define NFSD_EXPORT_H
7
8#include <linux/sunrpc/cache.h>
9#include <uapi/linux/nfsd/export.h>
10#include <linux/nfs4.h>
11
12struct knfsd_fh;
13struct svc_fh;
14struct svc_rqst;
15
16/*
17 * FS Locations
18 */
19
20#define MAX_FS_LOCATIONS 128
21
22struct nfsd4_fs_location {
23 char *hosts; /* colon separated list of hosts */
24 char *path; /* slash separated list of path components */
25};
26
27struct 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
35/*
36 * We keep an array of pseudoflavors with the export, in order from most
37 * to least preferred. For the foreseeable future, we don't expect more
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
42#define EX_UUID_LEN 16
43
44struct exp_flavor_info {
45 u32 pseudoflavor;
46 u32 flags;
47};
48
49struct svc_export {
50 struct cache_head h;
51 struct auth_domain * ex_client;
52 int ex_flags;
53 struct path ex_path;
54 kuid_t ex_anon_uid;
55 kgid_t ex_anon_gid;
56 int ex_fsid;
57 unsigned char * ex_uuid; /* 16 byte fsid */
58 struct nfsd4_fs_locations ex_fslocs;
59 uint32_t ex_nflavors;
60 struct exp_flavor_info ex_flavors[MAX_SECINFO_LIST];
61 u32 ex_layout_types;
62 struct nfsd4_deviceid_map *ex_devid_map;
63 struct cache_detail *cd;
64 struct rcu_head ex_rcu;
65};
66
67/* an "export key" (expkey) maps a filehandlefragement to an
68 * svc_export for a given client. There can be several per export,
69 * for the different fsid types.
70 */
71struct svc_expkey {
72 struct cache_head h;
73
74 struct auth_domain * ek_client;
75 int ek_fsidtype;
76 u32 ek_fsid[6];
77
78 struct path ek_path;
79 struct rcu_head ek_rcu;
80};
81
82#define EX_ISSYNC(exp) (!((exp)->ex_flags & NFSEXP_ASYNC))
83#define EX_NOHIDE(exp) ((exp)->ex_flags & NFSEXP_NOHIDE)
84#define EX_WGATHER(exp) ((exp)->ex_flags & NFSEXP_GATHERED_WRITES)
85
86int nfsexp_flags(struct svc_rqst *rqstp, struct svc_export *exp);
87__be32 check_nfsd_access(struct svc_export *exp, struct svc_rqst *rqstp);
88
89/*
90 * Function declarations
91 */
92int nfsd_export_init(struct net *);
93void nfsd_export_shutdown(struct net *);
94void nfsd_export_flush(struct net *);
95struct svc_export * rqst_exp_get_by_name(struct svc_rqst *,
96 struct path *);
97struct svc_export * rqst_exp_parent(struct svc_rqst *,
98 struct path *);
99struct svc_export * rqst_find_fsidzero_export(struct svc_rqst *);
100int exp_rootfh(struct net *, struct auth_domain *,
101 char *path, struct knfsd_fh *, int maxsize);
102__be32 exp_pseudoroot(struct svc_rqst *, struct svc_fh *);
103__be32 nfserrno(int errno);
104
105static inline void exp_put(struct svc_export *exp)
106{
107 cache_put(&exp->h, exp->cd);
108}
109
110static inline struct svc_export *exp_get(struct svc_export *exp)
111{
112 cache_get(&exp->h);
113 return exp;
114}
115struct svc_export * rqst_exp_find(struct svc_rqst *, int, u32 *);
116
117#endif /* NFSD_EXPORT_H */