nfs_mount.h

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#ifndef _LINUX_NFS_MOUNT_H
#define _LINUX_NFS_MOUNT_H

/*
 *  linux/include/linux/nfs_mount.h
 *
 *  Copyright (C) 1992  Rick Sladkey
 *
 *  structure passed from user-space to kernel-space during an nfs mount
 */
#include <linux/in.h>
#include <linux/nfs.h>
#include <linux/nfs2.h>
#include <linux/nfs3.h>

/*
 * WARNING!  Do not delete or change the order of these fields.  If
 * a new field is required then add it to the end.  The version field
 * tracks which fields are present.  This will ensure some measure of
 * mount-to-kernel version compatibility.  Some of these aren't used yet
 * but here they are anyway.
 */
#define NFS_MOUNT_VERSION   6
#define NFS_MAX_CONTEXT_LEN 256

struct nfs_mount_data {
    int     version;        /* 1 */
    int     fd;         /* 1 */
    struct nfs2_fh  old_root;       /* 1 */
    int     flags;          /* 1 */
    int     rsize;          /* 1 */
    int     wsize;          /* 1 */
    int     timeo;          /* 1 */
    int     retrans;        /* 1 */
    int     acregmin;       /* 1 */
    int     acregmax;       /* 1 */
    int     acdirmin;       /* 1 */
    int     acdirmax;       /* 1 */
    struct sockaddr_in addr;        /* 1 */
    char        hostname[NFS_MAXNAMLEN + 1];        /* 1 */
    int     namlen;         /* 2 */
    unsigned int    bsize;          /* 3 */
    struct nfs3_fh  root;           /* 4 */
    int     pseudoflavor;       /* 5 */
    char        context[NFS_MAX_CONTEXT_LEN + 1];   /* 6 */
};

/* bits in the flags field visible to user space */

#define NFS_MOUNT_SOFT      0x0001  /* 1 */
#define NFS_MOUNT_INTR      0x0002  /* 1 */ /* now unused, but ABI */
#define NFS_MOUNT_SECURE    0x0004  /* 1 */
#define NFS_MOUNT_POSIX     0x0008  /* 1 */
#define NFS_MOUNT_NOCTO     0x0010  /* 1 */
#define NFS_MOUNT_NOAC      0x0020  /* 1 */
#define NFS_MOUNT_TCP       0x0040  /* 2 */
#define NFS_MOUNT_VER3      0x0080  /* 3 */
#define NFS_MOUNT_KERBEROS  0x0100  /* 3 */
#define NFS_MOUNT_NONLM     0x0200  /* 3 */
#define NFS_MOUNT_BROKEN_SUID   0x0400  /* 4 */
#define NFS_MOUNT_NOACL     0x0800  /* 4 */
#define NFS_MOUNT_STRICTLOCK    0x1000  /* reserved for NFSv4 */
#define NFS_MOUNT_SECFLAVOUR    0x2000  /* 5 */
#define NFS_MOUNT_NORDIRPLUS    0x4000  /* 5 */
#define NFS_MOUNT_UNSHARED  0x8000  /* 5 */
#define NFS_MOUNT_FLAGMASK  0xFFFF

/* The following are for internal use only */
#define NFS_MOUNT_LOOKUP_CACHE_NONEG    0x10000
#define NFS_MOUNT_LOOKUP_CACHE_NONE 0x20000
#define NFS_MOUNT_NORESVPORT        0x40000
#define NFS_MOUNT_LEGACY_INTERFACE  0x80000

#define NFS_MOUNT_LOCAL_FLOCK   0x100000
#define NFS_MOUNT_LOCAL_FCNTL   0x200000

#endif