/*
   *  linux/fs/sysv/file.c
   *
   *  minix/file.c
   *  Copyright (C) 1991, 1992  Linus Torvalds
   *
   *  coh/file.c
   *  Copyright (C) 1993  Pascal Haible, Bruno Haible
   *
   *  sysv/file.c
   *  Copyright (C) 1993  Bruno Haible
   *
   *  SystemV/Coherent regular file handling primitives
   */
  
  #include "sysv.h"
  
  /*
   * We have mostly NULLs here: the current defaults are OK for
   * the coh filesystem.
   */

  const struct file_operations sysv_file_operations = {

  	.llseek		= generic_file_llseek,

  	.read		= do_sync_read,
  	.aio_read	= generic_file_aio_read,
  	.write		= do_sync_write,
  	.aio_write	= generic_file_aio_write,

  	.mmap		= generic_file_mmap,

  	.fsync		= generic_file_fsync,

  	.splice_read	= generic_file_splice_read,

  };

  static int sysv_setattr(struct dentry *dentry, struct iattr *attr)
  {
  	struct inode *inode = dentry->d_inode;
  	int error;
  
  	error = inode_change_ok(inode, attr);
  	if (error)
  		return error;

  
  	if ((attr->ia_valid & ATTR_SIZE) &&
  	    attr->ia_size != i_size_read(inode)) {
  		error = vmtruncate(inode, attr->ia_size);
  		if (error)
  			return error;
  	}
  
  	setattr_copy(inode, attr);
  	mark_inode_dirty(inode);
  	return 0;

  }

  const struct inode_operations sysv_file_inode_operations = {

  	.truncate	= sysv_truncate,

  	.setattr	= sysv_setattr,

  	.getattr	= sysv_getattr,
  };