nfsfh.h

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/*
 * include/linux/nfsd/nfsfh.h
 *
 * This file describes the layout of the file handles as passed
 * over the wire.
 *
 * Earlier versions of knfsd used to sign file handles using keyed MD5
 * or SHA. I've removed this code, because it doesn't give you more
 * security than blocking external access to port 2049 on your firewall.
 *
 * Copyright (C) 1995, 1996, 1997 Olaf Kirch <[email protected]>
 */
#ifndef _LINUX_NFSD_FH_H
#define _LINUX_NFSD_FH_H

# include <linux/sunrpc/svc.h>
#include <uapi/linux/nfsd/nfsfh.h>

static inline __u32 ino_t_to_u32(ino_t ino)
{
    return (__u32) ino;
}

static inline ino_t u32_to_ino_t(__u32 uino)
{
    return (ino_t) uino;
}

/*
 * This is the internal representation of an NFS handle used in knfsd.
 * pre_mtime/post_version will be used to support wcc_attr's in NFSv3.
 */
typedef struct svc_fh {
    struct knfsd_fh     fh_handle;  /* FH data */
    struct dentry *     fh_dentry;  /* validated dentry */
    struct svc_export * fh_export;  /* export pointer */
    int         fh_maxsize; /* max size for fh_handle */

    unsigned char       fh_locked;  /* inode locked by us */
    unsigned char       fh_want_write;  /* remount protection taken */

#ifdef CONFIG_NFSD_V3
    unsigned char       fh_post_saved;  /* post-op attrs saved */
    unsigned char       fh_pre_saved;   /* pre-op attrs saved */

    /* Pre-op attributes saved during fh_lock */
    __u64           fh_pre_size;    /* size before operation */
    struct timespec     fh_pre_mtime;   /* mtime before oper */
    struct timespec     fh_pre_ctime;   /* ctime before oper */
    /*
     * pre-op nfsv4 change attr: note must check IS_I_VERSION(inode)
     *  to find out if it is valid.
     */
    u64         fh_pre_change;

    /* Post-op attributes saved in fh_unlock */
    struct kstat        fh_post_attr;   /* full attrs after operation */
    u64         fh_post_change; /* nfsv4 change; see above */
#endif /* CONFIG_NFSD_V3 */

} svc_fh;

#endif /* _LINUX_NFSD_FH_H */