fs/minix/file.c

   1 /*
   2  *  linux/fs/minix/file.c
   3  *
   4  *  Copyright (C) 1991, 1992 Linus Torvalds
   5  *
   6  *  minix regular file handling primitives
   7  */
   8
   9 #include <linux/buffer_head.h>          /* for fsync_inode_buffers() */
  10 #include "minix.h"
  11
  12 /*
  13  * We have mostly NULLs here: the current defaults are OK for
  14  * the minix filesystem.
  15  */
  16 int minix_sync_file(struct file *, struct dentry *, int);
  17
  18 struct file_operations minix_file_operations = {
  19         .llseek         = generic_file_llseek,
  20         .read           = generic_file_read,
  21         .write          = generic_file_write,
  22         .mmap           = generic_file_mmap,
  23         .fsync          = minix_sync_file,
  24         .sendfile       = generic_file_sendfile,
  25 };
  26
  27 struct inode_operations minix_file_inode_operations = {
  28         .truncate       = minix_truncate,
  29         .getattr        = minix_getattr,
  30 };
  31
  32 int minix_sync_file(struct file * file, struct dentry *dentry, int datasync)
  33 {
  34         struct inode *inode = dentry->d_inode;
  35         int err;
  36
  37         err = sync_mapping_buffers(inode->i_mapping);
  38         if (!(inode->i_state & I_DIRTY))
  39                 return err;
  40         if (datasync && !(inode->i_state & I_DIRTY_DATASYNC))
  41                 return err;
  42
  43         err |= minix_sync_inode(inode);
  44         return err ? -EIO : 0;
  45 }