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      1 #ifndef _LINUX_NFS4_MOUNT_H
      2 #define _LINUX_NFS4_MOUNT_H
      3 
      4 /*
      5  *  linux/include/linux/nfs4_mount.h
      6  *
      7  *  Copyright (C) 2002  Trond Myklebust
      8  *
      9  *  structure passed from user-space to kernel-space during an nfsv4 mount
     10  */
     11 
     12 /*
     13  * WARNING!  Do not delete or change the order of these fields.  If
     14  * a new field is required then add it to the end.  The version field
     15  * tracks which fields are present.  This will ensure some measure of
     16  * mount-to-kernel version compatibility.  Some of these aren't used yet
     17  * but here they are anyway.
     18  */
     19 #define NFS4_MOUNT_VERSION	1
     20 
     21 struct nfs_string {
     22 	unsigned int len;
     23 	const char __user * data;
     24 };
     25 
     26 struct nfs4_mount_data {
     27 	int version;				/* 1 */
     28 	int flags;				/* 1 */
     29 	int rsize;				/* 1 */
     30 	int wsize;				/* 1 */
     31 	int timeo;				/* 1 */
     32 	int retrans;				/* 1 */
     33 	int acregmin;				/* 1 */
     34 	int acregmax;				/* 1 */
     35 	int acdirmin;				/* 1 */
     36 	int acdirmax;				/* 1 */
     37 
     38 	/* see the definition of 'struct clientaddr4' in RFC3010 */
     39 	struct nfs_string client_addr;		/* 1 */
     40 
     41 	/* Mount path */
     42 	struct nfs_string mnt_path;		/* 1 */
     43 
     44 	/* Server details */
     45 	struct nfs_string hostname;		/* 1 */
     46 	/* Server IP address */
     47 	unsigned int host_addrlen;		/* 1 */
     48 	struct sockaddr __user * host_addr;	/* 1 */
     49 
     50 	/* Transport protocol to use */
     51 	int proto;				/* 1 */
     52 
     53 	/* Pseudo-flavours to use for authentication. See RFC2623 */
     54 	int auth_flavourlen;			/* 1 */
     55 	int __user *auth_flavours;		/* 1 */
     56 };
     57 
     58 /* bits in the flags field */
     59 /* Note: the fields that correspond to existing NFSv2/v3 mount options
     60  * 	 should mirror the values from include/linux/nfs_mount.h
     61  */
     62 
     63 #define NFS4_MOUNT_SOFT		0x0001	/* 1 */
     64 #define NFS4_MOUNT_INTR		0x0002	/* 1 */
     65 #define NFS4_MOUNT_NOCTO	0x0010	/* 1 */
     66 #define NFS4_MOUNT_NOAC		0x0020	/* 1 */
     67 #define NFS4_MOUNT_STRICTLOCK	0x1000	/* 1 */
     68 #define NFS4_MOUNT_UNSHARED	0x8000	/* 1 */
     69 #define NFS4_MOUNT_FLAGMASK	0x9033
     70 
     71 #endif
     72