1 files changed, 137 insertions, 0 deletions
diff --git a/include/linux/nfsd/export.h b/include/linux/nfsd/export.h
new file mode 100644
index 000000000000..6bad4766d3d9
--- /dev/null
+++ b/include/linux/nfsd/export.h
@@ -0,0 +1,137 @@
+/*
+ * include/linux/nfsd/export.h
+ * 
+ * Public declarations for NFS exports. The definitions for the
+ * syscall interface are in nfsctl.h
+ *
+ * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de>
+ */
+#ifndef NFSD_EXPORT_H
+#define NFSD_EXPORT_H
+#include <asm/types.h>
+#ifdef __KERNEL__
+# include <linux/types.h>
+# include <linux/in.h>
+#endif
+/*
+ * Important limits for the exports stuff.
+ */
+#define NFSCLNT_IDMAX           1024
+#define NFSCLNT_ADDRMAX         16
+#define NFSCLNT_KEYMAX          32
+/*
+ * Export flags.
+ */
+#define NFSEXP_READONLY         0x0001
+#define NFSEXP_INSECURE_PORT    0x0002
+#define NFSEXP_ROOTSQUASH       0x0004
+#define NFSEXP_ALLSQUASH        0x0008
+#define NFSEXP_ASYNC            0x0010
+#define NFSEXP_GATHERED_WRITES  0x0020
+/* 40 80 100 currently unused */
+#define NFSEXP_NOHIDE           0x0200
+#define NFSEXP_NOSUBTREECHECK   0x0400
+#define NFSEXP_NOAUTHNLM        0x0800          /* Don't authenticate NLM requests - just trust */
+#define NFSEXP_MSNFS            0x1000  /* do silly things that MS clients expect */
+#define NFSEXP_FSID             0x2000
+#define NFSEXP_CROSSMOUNT       0x4000
+#define NFSEXP_NOACL            0x8000  /* reserved for possible ACL related use */
+#define NFSEXP_ALLFLAGS         0xFE3F
+#ifdef __KERNEL__
+struct svc_export {
+        struct cache_head       h;
+        struct auth_domain *    ex_client;
+        int                     ex_flags;
+        struct vfsmount *       ex_mnt;
+        struct dentry *         ex_dentry;
+        uid_t                   ex_anon_uid;
+        gid_t                   ex_anon_gid;
+        int                     ex_fsid;
+};
+/* 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)
+ */
+struct svc_expkey {
+        struct cache_head       h;
+        struct auth_domain *    ek_client;
+        int                     ek_fsidtype;
+        u32                     ek_fsid[3];
+        struct svc_export *     ek_export;
+};
+#define EX_SECURE(exp)          (!((exp)->ex_flags & NFSEXP_INSECURE_PORT))
+#define EX_ISSYNC(exp)          (!((exp)->ex_flags & NFSEXP_ASYNC))
+#define EX_RDONLY(exp)          ((exp)->ex_flags & NFSEXP_READONLY)
+#define EX_NOHIDE(exp)          ((exp)->ex_flags & NFSEXP_NOHIDE)
+#define EX_WGATHER(exp)         ((exp)->ex_flags & NFSEXP_GATHERED_WRITES)
+/*
+ * Function declarations
+ */
+void                    nfsd_export_init(void);
+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,
+                                        struct cache_req *reqp);
+struct svc_export *     exp_parent(struct auth_domain *clp,
+                                   struct vfsmount *mnt,
+                                   struct dentry *dentry,
+                                   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);
+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;
+static inline void exp_put(struct svc_export *exp)
+{
+        svc_export_put(&exp->h, &svc_export_cache);
+}
+static inline void exp_get(struct svc_export *exp)
+{
+        cache_get(&exp->h);
+}
+static inline 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));
+}
+#endif /* __KERNEL__ */
+#endif /* NFSD_EXPORT_H */

diff --git a/include/linux/nfsd/export.h b/include/linux/nfsd/export.h new file mode 100644 index 000000000000..6bad4766d3d9 --- /dev/null +++ b/include/linux/nfsd/export.h
@@ -0,0 +1,137 @@
	1	/*
	2	* include/linux/nfsd/export.h
	3	*
	4	* Public declarations for NFS exports. The definitions for the
	5	* syscall interface are in nfsctl.h
	6	*
	7	* Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de>
	8	*/
	9
	10	#ifndef NFSD_EXPORT_H
	11	#define NFSD_EXPORT_H
	12
	13	#include <asm/types.h>
	14	#ifdef __KERNEL__
	15	# include <linux/types.h>
	16	# include <linux/in.h>
	17	#endif
	18
	19	/*
	20	* Important limits for the exports stuff.
	21	*/
	22	#define NFSCLNT_IDMAX 1024
	23	#define NFSCLNT_ADDRMAX 16
	24	#define NFSCLNT_KEYMAX 32
	25
	26	/*
	27	* Export flags.
	28	*/
	29	#define NFSEXP_READONLY 0x0001
	30	#define NFSEXP_INSECURE_PORT 0x0002
	31	#define NFSEXP_ROOTSQUASH 0x0004
	32	#define NFSEXP_ALLSQUASH 0x0008
	33	#define NFSEXP_ASYNC 0x0010
	34	#define NFSEXP_GATHERED_WRITES 0x0020
	35	/* 40 80 100 currently unused */
	36	#define NFSEXP_NOHIDE 0x0200
	37	#define NFSEXP_NOSUBTREECHECK 0x0400
	38	#define NFSEXP_NOAUTHNLM 0x0800 /* Don't authenticate NLM requests - just trust */
	39	#define NFSEXP_MSNFS 0x1000 /* do silly things that MS clients expect */
	40	#define NFSEXP_FSID 0x2000
	41	#define NFSEXP_CROSSMOUNT 0x4000
	42	#define NFSEXP_NOACL 0x8000 /* reserved for possible ACL related use */
	43	#define NFSEXP_ALLFLAGS 0xFE3F
	44
	45
	46	#ifdef __KERNEL__
	47
	48	struct svc_export {
	49	struct cache_head h;
	50	struct auth_domain * ex_client;
	51	int ex_flags;
	52	struct vfsmount * ex_mnt;
	53	struct dentry * ex_dentry;
	54	uid_t ex_anon_uid;
	55	gid_t ex_anon_gid;
	56	int ex_fsid;
	57	};
	58
	59	/* an "export key" (expkey) maps a filehandlefragement to an
	60	* svc_export for a given client. There can be two per export, one
	61	* for type 0 (dev/ino), one for type 1 (fsid)
	62	*/
	63	struct svc_expkey {
	64	struct cache_head h;
	65
	66	struct auth_domain * ek_client;
	67	int ek_fsidtype;
	68	u32 ek_fsid[3];
	69
	70	struct svc_export * ek_export;
	71	};
	72
	73	#define EX_SECURE(exp) (!((exp)->ex_flags & NFSEXP_INSECURE_PORT))
	74	#define EX_ISSYNC(exp) (!((exp)->ex_flags & NFSEXP_ASYNC))
	75	#define EX_RDONLY(exp) ((exp)->ex_flags & NFSEXP_READONLY)
	76	#define EX_NOHIDE(exp) ((exp)->ex_flags & NFSEXP_NOHIDE)
	77	#define EX_WGATHER(exp) ((exp)->ex_flags & NFSEXP_GATHERED_WRITES)
	78
	79
	80	/*
	81	* Function declarations
	82	*/
	83	void nfsd_export_init(void);
	84	void nfsd_export_shutdown(void);
	85	void nfsd_export_flush(void);
	86	void exp_readlock(void);
	87	void exp_readunlock(void);
	88	struct svc_expkey * exp_find_key(struct auth_domain *clp,
	89	int fsid_type, u32 *fsidv,
	90	struct cache_req *reqp);
	91	struct svc_export * exp_get_by_name(struct auth_domain *clp,
	92	struct vfsmount *mnt,
	93	struct dentry *dentry,
	94	struct cache_req *reqp);
	95	struct svc_export * exp_parent(struct auth_domain *clp,
	96	struct vfsmount *mnt,
	97	struct dentry *dentry,
	98	struct cache_req *reqp);
	99	int exp_rootfh(struct auth_domain *,
	100	char path, struct knfsd_fh , int maxsize);
	101	int exp_pseudoroot(struct auth_domain , struct svc_fh fhp, struct cache_req *creq);
	102	int nfserrno(int errno);
	103
	104	extern void expkey_put(struct cache_head item, struct cache_detail cd);
	105	extern void svc_export_put(struct cache_head item, struct cache_detail cd);
	106	extern struct cache_detail svc_export_cache, svc_expkey_cache;
	107
	108	static inline void exp_put(struct svc_export *exp)
	109	{
	110	svc_export_put(&exp->h, &svc_export_cache);
	111	}
	112
	113	static inline void exp_get(struct svc_export *exp)
	114	{
	115	cache_get(&exp->h);
	116	}
	117	static inline struct svc_export *
	118	exp_find(struct auth_domain clp, int fsid_type, u32 fsidv,
	119	struct cache_req *reqp)
	120	{
	121	struct svc_expkey *ek = exp_find_key(clp, fsid_type, fsidv, reqp);
	122	if (ek && !IS_ERR(ek)) {
	123	struct svc_export *exp = ek->ek_export;
	124	int err;
	125	exp_get(exp);
	126	expkey_put(&ek->h, &svc_expkey_cache);
	127	if ((err = cache_check(&svc_export_cache, &exp->h, reqp)))
	128	exp = ERR_PTR(err);
	129	return exp;
	130	} else
	131	return ERR_PTR(PTR_ERR(ek));
	132	}
	133
	134	#endif /* __KERNEL__ */
	135
	136	#endif /* NFSD_EXPORT_H */
	137