knfsd: nfsd4: simplify exp_pseudoroot arguments

[safe/jmp/linux-2.6] / include / linux / nfsd / export.h

diff --git a/include/linux/nfsd/export.h b/include/linux/nfsd/export.h
index 6bad476..5ed4f27 100644 (file)
--- a/include/linux/nfsd/export.h
+++ b/include/linux/nfsd/export.h
@@ -42,32 +42,72 @@
 #define        NFSEXP_NOACL            0x8000  /* reserved for possible ACL related use */
 #define NFSEXP_ALLFLAGS                0xFE3F
 
+/* The flags that may vary depending on security flavor: */
+#define NFSEXP_SECINFO_FLAGS   0
 
 #ifdef __KERNEL__
 
+/*
+ * FS Locations
+ */
+
+#define MAX_FS_LOCATIONS       128
+
+struct nfsd4_fs_location {
+       char *hosts; /* colon separated list of hosts */
+       char *path;  /* slash separated list of path components */
+};
+
+struct nfsd4_fs_locations {
+       uint32_t locations_count;
+       struct nfsd4_fs_location *locations;
+/* If we're not actually serving this data ourselves (only providing a
+ * list of replicas that do serve it) then we set "migrated": */
+       int migrated;
+};
+
+/*
+ * We keep an array of pseudoflavors with the export, in order from most
+ * to least preferred.  For the forseeable future, we don't expect more
+ * than the eight pseudoflavors null, unix, krb5, krb5i, krb5p, skpm3,
+ * spkm3i, and spkm3p (and using all 8 at once should be rare).
+ */
+#define MAX_SECINFO_LIST       8
+
+struct exp_flavor_info {
+       u32     pseudoflavor;
+       u32     flags;
+};
+
 struct svc_export {
        struct cache_head       h;
        struct auth_domain *    ex_client;
        int                     ex_flags;
        struct vfsmount *       ex_mnt;
        struct dentry *         ex_dentry;
+       char *                  ex_path;
        uid_t                   ex_anon_uid;
        gid_t                   ex_anon_gid;
        int                     ex_fsid;
+       unsigned char *         ex_uuid; /* 16 byte fsid */
+       struct nfsd4_fs_locations ex_fslocs;
+       int                     ex_nflavors;
+       struct exp_flavor_info  ex_flavors[MAX_SECINFO_LIST];
 };
 
 /* an "export key" (expkey) maps a filehandlefragement to an
- * svc_export for a given client.  There can be two per export, one
- * for type 0 (dev/ino), one for type 1 (fsid)
+ * svc_export for a given client.  There can be several per export,
+ * for the different fsid types.
  */
 struct svc_expkey {
        struct cache_head       h;
 
        struct auth_domain *    ek_client;
        int                     ek_fsidtype;
-       u32                     ek_fsid[3];
+       u32                     ek_fsid[6];
 
-       struct svc_export *     ek_export;
+       struct vfsmount *       ek_mnt;
+       struct dentry *         ek_dentry;
 };
 
 #define EX_SECURE(exp)         (!((exp)->ex_flags & NFSEXP_INSECURE_PORT))
@@ -85,9 +125,6 @@ void                 nfsd_export_shutdown(void);
 void                   nfsd_export_flush(void);
 void                   exp_readlock(void);
 void                   exp_readunlock(void);
-struct svc_expkey *    exp_find_key(struct auth_domain *clp, 
-                                    int fsid_type, u32 *fsidv,
-                                    struct cache_req *reqp);
 struct svc_export *    exp_get_by_name(struct auth_domain *clp,
                                        struct vfsmount *mnt,
                                        struct dentry *dentry,
@@ -98,38 +135,23 @@ struct svc_export *        exp_parent(struct auth_domain *clp,
                                   struct cache_req *reqp);
 int                    exp_rootfh(struct auth_domain *, 
                                        char *path, struct knfsd_fh *, int maxsize);
-int                    exp_pseudoroot(struct auth_domain *, struct svc_fh *fhp, struct cache_req *creq);
-int                    nfserrno(int errno);
+__be32                 exp_pseudoroot(struct svc_rqst *, struct svc_fh *);
+__be32                 nfserrno(int errno);
 
-extern void expkey_put(struct cache_head *item, struct cache_detail *cd);
-extern void svc_export_put(struct cache_head *item, struct cache_detail *cd);
-extern struct cache_detail svc_export_cache, svc_expkey_cache;
+extern struct cache_detail svc_export_cache;
 
 static inline void exp_put(struct svc_export *exp)
 {
-       svc_export_put(&exp->h, &svc_export_cache);
+       cache_put(&exp->h, &svc_export_cache);
 }
 
 static inline void exp_get(struct svc_export *exp)
 {
        cache_get(&exp->h);
 }
-static inline struct svc_export *
+extern struct svc_export *
 exp_find(struct auth_domain *clp, int fsid_type, u32 *fsidv,
-        struct cache_req *reqp)
-{
-       struct svc_expkey *ek = exp_find_key(clp, fsid_type, fsidv, reqp);
-       if (ek && !IS_ERR(ek)) {
-               struct svc_export *exp = ek->ek_export;
-               int err;
-               exp_get(exp);
-               expkey_put(&ek->h, &svc_expkey_cache);
-               if ((err = cache_check(&svc_export_cache, &exp->h, reqp)))
-                       exp = ERR_PTR(err);
-               return exp;
-       } else
-               return ERR_PTR(PTR_ERR(ek));
-}
+        struct cache_req *reqp);
 
 #endif /* __KERNEL__ */