#ifndef UVFS_LINUX_ATTR_H
#define UVFS_LINUX_ATTR_H

#include "uvfs_prot.h"

#define PERM_MASK ((1<<13) - 1)

#define TYPE_MASK (S_IFMT | S_IFSOCK | S_IFLNK | S_IFREG | S_IFBLK | S_IFDIR \
                   | S_IFCHR | S_IFIFO)

static int modes[] = { 0, S_IFREG, S_IFDIR, S_IFBLK,S_IFCHR, S_IFLNK,
                       S_IFSOCK, S_IFIFO };

static inline int
mode2type (int m) {
  m &= ~PERM_MASK;
  m &=  TYPE_MASK;
  switch (m) {
    case S_IFREG:  return NF3REG;
    case S_IFDIR:  return NF3DIR;
    case S_IFBLK:  return NF3BLK;
    case S_IFCHR:  return NF3CHR;
    case S_IFLNK:  return NF3LNK;
    case S_IFSOCK: return NF3SOCK;
    case S_IFIFO: return NF3FIFO;
    default: return 0;
  }
  return 0;
}

static inline void
fattr2inode (uvfs_fattr *attr, struct inode *inode)
{
  inode->i_ino   = attr->fileid;
  inode->i_dev   = inode->i_sb->s_dev;
  inode->i_mode  = (attr->mode & PERM_MASK) | modes[attr->type];
  inode->i_nlink = attr->nlink;
  inode->i_uid   = attr->uid;
  inode->i_gid   = attr->gid;
  inode->i_rdev  = MKDEV(attr->rdev.major & 0xFF, attr->rdev.minor & 0XFF);
  inode->i_size  = attr->size;
  inode->i_atime = attr->atime.seconds;
  inode->i_mtime = attr->mtime.seconds;
  inode->i_ctime = attr->ctime.seconds;
  /* attr->fsid; */
  /* attr->used; */
  /* attr->expire; */
}

static inline void
inode2fattr (struct inode *inode, uvfs_fattr *attr)
{
  attr->fileid        = inode->i_ino;
  attr->mode          = inode->i_mode & PERM_MASK;
  attr->type          = mode2type (inode->i_mode);
  attr->nlink         = inode->i_nlink;
  attr->uid           = inode->i_uid;
  attr->gid           = inode->i_gid;
  attr->rdev.minor    = MINOR(inode->i_rdev);
  attr->rdev.major    = MAJOR(inode->i_rdev);
  attr->size          = inode->i_size;
  attr->atime.seconds = inode->i_atime;
  attr->mtime.seconds = inode->i_mtime;
  attr->ctime.seconds = inode->i_ctime;
}

static inline int
uvfs_getattr (uvfs_fh arg, struct super_block *sb, uvfs_fattr *attr)
{
  uvfs_attrres res;
  int err = 0;

  bzero (&arg, sizeof arg);
  bzero (&res, sizeof res);
  err = krpc_callit (SBTORPCQ(sb), &uvfsprog_1,
                     UVFSPROC_GETATTR, &arg, &res);
  if (!err && !res.status)
    err = res.status;
  *attr = res.u.attributes;
  xdr_free (xdr_uvfs_attrres, &res);
  return err;
}
#endif /* UVFS_LINUX_ATTR_H */