patch-2.1.32 linux/include/linux/nfsd/export.h

• Lines: 110
• Date: Fri Apr 4 12:19:14 1997
• Orig file: v2.1.31/linux/include/linux/nfsd/export.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.31/linux/include/linux/nfsd/export.h linux/include/linux/nfsd/export.h
@@ -0,0 +1,109 @@
+/*
+ * include/linux/nfsd/export.h
+ * 
+ * Public declarations for NFS exports. The definitions for the
+ * syscall interface are in nfsctl.h
+ *
+ * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
+ */
+
+#ifndef NFSD_EXPORT_H
+#define NFSD_EXPORT_H
+
+#include <linux/types.h>
+#include <linux/socket.h>
+#include <linux/in.h>
+#include <linux/fs.h>
+
+/*
+ * 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
+#define NFSEXP_UIDMAP		0x0040
+#define NFSEXP_KERBEROS		0x0080		/* not available */
+#define NFSEXP_SUNSECURE	0x0100
+#define NFSEXP_CROSSMNT		0x0200		/* not available */
+#define NFSEXP_ALLFLAGS		0x03FF
+
+
+#ifdef __KERNEL__
+
+/* The following are hashtable sizes and must be powers of 2 */
+#define NFSCLNT_EXPMAX		16
+
+struct svc_client {
+	struct svc_client *	cl_next;
+	char			cl_ident[NFSCLNT_IDMAX];
+	int			cl_idlen;
+	int			cl_naddr;
+	struct in_addr		cl_addr[NFSCLNT_ADDRMAX];
+	struct svc_uidmap *	cl_umap;
+	struct svc_export *	cl_export[NFSCLNT_EXPMAX];
+};
+
+struct svc_export {
+	struct svc_export *	ex_next;
+	char			ex_path[NFS_MAXPATHLEN+1];
+	struct svc_export *	ex_parent;
+	struct svc_client *	ex_client;
+	int			ex_flags;
+	struct inode *		ex_inode;
+	dev_t			ex_dev;
+	ino_t			ex_ino;
+	uid_t			ex_anon_uid;
+	gid_t			ex_anon_gid;
+};
+
+#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_CROSSMNT(exp)	((exp)->ex_flags & NFSEXP_CROSSMNT)
+#define EX_SUNSECURE(exp)	((exp)->ex_flags & NFSEXP_SUNSECURE)
+#define EX_WGATHER(exp)		((exp)->ex_flags & NFSEXP_GATHERED_WRITES)
+
+
+/*
+ * Function declarations
+ */
+void			nfsd_export_init(void);
+void			nfsd_export_shutdown(void);
+void			exp_readlock(void);
+int			exp_writelock(void);
+void			exp_unlock(void);
+struct svc_client *	exp_getclient(struct sockaddr_in *sin);
+void			exp_putclient(struct svc_client *clp);
+struct svc_export *	exp_get(struct svc_client *clp, dev_t dev, ino_t ino);
+int			exp_rootfh(struct svc_client *, dev_t, ino_t,
+					struct knfs_fh *);
+int			nfserrno(int errno);
+void			exp_nlmdetach(void);
+
+
+extern __inline__ int
+exp_checkaddr(struct svc_client *clp, struct in_addr addr)
+{
+	struct in_addr	*ap = clp->cl_addr;
+	int		i;
+
+	for (i = clp->cl_naddr; i--; ap++)
+		if (ap->s_addr == addr.s_addr)
+			return 1;
+	return 0;
+}
+
+#endif /* __KERNEL__ */
+
+#endif /* NFSD_EXPORT_H */
+