2 * include/linux/nfsd/export.h
4 * Public declarations for NFS exports. The definitions for the
5 * syscall interface are in nfsctl.h
7 * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de>
12 #include <linux/sunrpc/cache.h>
13 #include <uapi/linux/nfsd/export.h>
23 #define MAX_FS_LOCATIONS 128
25 struct nfsd4_fs_location {
26 char *hosts; /* colon separated list of hosts */
27 char *path; /* slash separated list of path components */
30 struct nfsd4_fs_locations {
31 uint32_t locations_count;
32 struct nfsd4_fs_location *locations;
33 /* If we're not actually serving this data ourselves (only providing a
34 * list of replicas that do serve it) then we set "migrated": */
39 * We keep an array of pseudoflavors with the export, in order from most
40 * to least preferred. For the foreseeable future, we don't expect more
41 * than the eight pseudoflavors null, unix, krb5, krb5i, krb5p, skpm3,
42 * spkm3i, and spkm3p (and using all 8 at once should be rare).
44 #define MAX_SECINFO_LIST 8
46 struct exp_flavor_info {
53 struct auth_domain * ex_client;
59 unsigned char * ex_uuid; /* 16 byte fsid */
60 struct nfsd4_fs_locations ex_fslocs;
62 struct exp_flavor_info ex_flavors[MAX_SECINFO_LIST];
63 struct cache_detail *cd;
66 /* an "export key" (expkey) maps a filehandlefragement to an
67 * svc_export for a given client. There can be several per export,
68 * for the different fsid types.
73 struct auth_domain * ek_client;
80 #define EX_ISSYNC(exp) (!((exp)->ex_flags & NFSEXP_ASYNC))
81 #define EX_NOHIDE(exp) ((exp)->ex_flags & NFSEXP_NOHIDE)
82 #define EX_WGATHER(exp) ((exp)->ex_flags & NFSEXP_GATHERED_WRITES)
84 int nfsexp_flags(struct svc_rqst *rqstp, struct svc_export *exp);
85 __be32 check_nfsd_access(struct svc_export *exp, struct svc_rqst *rqstp);
88 * Function declarations
90 int nfsd_export_init(struct net *);
91 void nfsd_export_shutdown(struct net *);
92 void nfsd_export_flush(struct net *);
93 struct svc_export * rqst_exp_get_by_name(struct svc_rqst *,
95 struct svc_export * rqst_exp_parent(struct svc_rqst *,
97 struct svc_export * rqst_find_fsidzero_export(struct svc_rqst *);
98 int exp_rootfh(struct net *, struct auth_domain *,
99 char *path, struct knfsd_fh *, int maxsize);
100 __be32 exp_pseudoroot(struct svc_rqst *, struct svc_fh *);
101 __be32 nfserrno(int errno);
103 static inline void exp_put(struct svc_export *exp)
105 cache_put(&exp->h, exp->cd);
108 static inline void exp_get(struct svc_export *exp)
112 struct svc_export * rqst_exp_find(struct svc_rqst *, int, u32 *);
114 #endif /* NFSD_EXPORT_H */