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 static int ufs_sync_file(struct file *file, struct dentry *dentry, int datasync)
  31 {
  32         struct inode *inode = dentry->d_inode;
  33         int err;
  34         int ret;
  35
  36         ret = sync_mapping_buffers(inode->i_mapping);
  37         if (!(inode->i_state & I_DIRTY))
  38                 return ret;
  39         if (datasync && !(inode->i_state & I_DIRTY_DATASYNC))
  40                 return ret;
  41
  42         err = ufs_sync_inode(inode);
  43         if (ret == 0)
  44                 ret = err;
  45         return ret;
  46 }
  47
  48
  49 /*
  50  * We have mostly NULL's here: the current defaults are ok for
  51  * the ufs filesystem.
  52  */
  53
  54 const struct file_operations ufs_file_operations = {
  55         .llseek         = generic_file_llseek,
  56         .read           = do_sync_read,
  57         .aio_read       = generic_file_aio_read,
  58         .write          = do_sync_write,
  59         .aio_write      = generic_file_aio_write,
  60         .mmap           = generic_file_mmap,
  61         .open           = generic_file_open,
  62         .fsync          = ufs_sync_file,
  63         .splice_read    = generic_file_splice_read,
  64 };