^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #ifndef NFSD_EXPORT_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #define NFSD_EXPORT_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/sunrpc/cache.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <uapi/linux/nfsd/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/nfs4.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) struct knfsd_fh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) struct svc_fh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) struct svc_rqst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * FS Locations
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define MAX_FS_LOCATIONS 128
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) struct nfsd4_fs_location {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) char *hosts; /* colon separated list of hosts */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) char *path; /* slash separated list of path components */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) struct nfsd4_fs_locations {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) uint32_t locations_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) struct nfsd4_fs_location *locations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) /* If we're not actually serving this data ourselves (only providing a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * list of replicas that do serve it) then we set "migrated": */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) int migrated;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) * We keep an array of pseudoflavors with the export, in order from most
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) * to least preferred. For the foreseeable future, we don't expect more
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) * than the eight pseudoflavors null, unix, krb5, krb5i, krb5p, skpm3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) * spkm3i, and spkm3p (and using all 8 at once should be rare).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #define MAX_SECINFO_LIST 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #define EX_UUID_LEN 16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) struct exp_flavor_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) u32 pseudoflavor;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) u32 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) struct svc_export {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) struct cache_head h;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) struct auth_domain * ex_client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) int ex_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) struct path ex_path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) kuid_t ex_anon_uid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) kgid_t ex_anon_gid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) int ex_fsid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) unsigned char * ex_uuid; /* 16 byte fsid */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) struct nfsd4_fs_locations ex_fslocs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) uint32_t ex_nflavors;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) struct exp_flavor_info ex_flavors[MAX_SECINFO_LIST];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) u32 ex_layout_types;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) struct nfsd4_deviceid_map *ex_devid_map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) struct cache_detail *cd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) struct rcu_head ex_rcu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) /* an "export key" (expkey) maps a filehandlefragement to an
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) * svc_export for a given client. There can be several per export,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) * for the different fsid types.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) struct svc_expkey {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) struct cache_head h;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) struct auth_domain * ek_client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) int ek_fsidtype;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) u32 ek_fsid[6];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) struct path ek_path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) struct rcu_head ek_rcu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) #define EX_ISSYNC(exp) (!((exp)->ex_flags & NFSEXP_ASYNC))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) #define EX_NOHIDE(exp) ((exp)->ex_flags & NFSEXP_NOHIDE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) #define EX_WGATHER(exp) ((exp)->ex_flags & NFSEXP_GATHERED_WRITES)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) int nfsexp_flags(struct svc_rqst *rqstp, struct svc_export *exp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) __be32 check_nfsd_access(struct svc_export *exp, struct svc_rqst *rqstp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) * Function declarations
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) int nfsd_export_init(struct net *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) void nfsd_export_shutdown(struct net *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) void nfsd_export_flush(struct net *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) struct svc_export * rqst_exp_get_by_name(struct svc_rqst *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) struct path *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) struct svc_export * rqst_exp_parent(struct svc_rqst *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) struct path *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) struct svc_export * rqst_find_fsidzero_export(struct svc_rqst *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) int exp_rootfh(struct net *, struct auth_domain *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) char *path, struct knfsd_fh *, int maxsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) __be32 exp_pseudoroot(struct svc_rqst *, struct svc_fh *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) __be32 nfserrno(int errno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) static inline void exp_put(struct svc_export *exp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) cache_put(&exp->h, exp->cd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) static inline struct svc_export *exp_get(struct svc_export *exp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) cache_get(&exp->h);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) return exp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) struct svc_export * rqst_exp_find(struct svc_rqst *, int, u32 *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) #endif /* NFSD_EXPORT_H */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags