LXR linux/fs/ufs/file.c

   1/*
   2 *  linux/fs/ufs/file.c
   3 *
   4 * Copyright (C) 1998
   5 * Daniel Pirkl <daniel.pirkl@email.cz>
   6 * Charles University, Faculty of Mathematics and Physics
   7 *
   8 *  from
   9 *
  10 *  linux/fs/ext2/file.c
  11 *
  12 * Copyright (C) 1992, 1993, 1994, 1995
  13 * Remy Card (card@masi.ibp.fr)
  14 * Laboratoire MASI - Institut Blaise Pascal
  15 * Universite Pierre et Marie Curie (Paris VI)
  16 *
  17 *  from
  18 *
  19 *  linux/fs/minix/file.c
  20 *
  21 *  Copyright (C) 1991, 1992  Linus Torvalds
  22 *
  23 *  ext2 fs regular file handling primitives
  24 */
  25
  26#include <linux/fs.h>
  27#include <linux/ufs_fs.h>
  28#include <linux/buffer_head.h>  /* for sync_mapping_buffers() */
  29
  30#include "ufs.h"
  31
  32
  33static int ufs_sync_file(struct file *file, struct dentry *dentry, int datasync)
  34{
  35        struct inode *inode = dentry->d_inode;
  36        int err;
  37        int ret;
  38
  39        ret = sync_mapping_buffers(inode->i_mapping);
  40        if (!(inode->i_state & I_DIRTY))
  41                return ret;
  42        if (datasync && !(inode->i_state & I_DIRTY_DATASYNC))
  43                return ret;
  44
  45        err = ufs_sync_inode(inode);
  46        if (ret == 0)
  47                ret = err;
  48        return ret;
  49}
  50
  51
  52/*
  53 * We have mostly NULL's here: the current defaults are ok for
  54 * the ufs filesystem.
  55 */
  56 
  57const struct file_operations ufs_file_operations = {
  58        .llseek         = generic_file_llseek,
  59        .read           = do_sync_read,
  60        .aio_read       = generic_file_aio_read,
  61        .write          = do_sync_write,
  62        .aio_write      = generic_file_aio_write,
  63        .mmap           = generic_file_mmap,
  64        .open           = generic_file_open,
  65        .fsync          = ufs_sync_file,
  66        .splice_read    = generic_file_splice_read,
  67};
  68