1 /*
2 * linux/fs/sysv/file.c
3 *
4 * minix/file.c
5 * Copyright (C) 1991, 1992 Linus Torvalds
6 *
7 * coh/file.c
8 * Copyright (C) 1993 Pascal Haible, Bruno Haible
9 *
10 * sysv/file.c
11 * Copyright (C) 1993 Bruno Haible
12 *
13 * SystemV/Coherent regular file handling primitives
14 */
15
16 #include <linux/fs.h>
17 #include <linux/sysv_fs.h>
18
19 /*
20 * We have mostly NULLs here: the current defaults are OK for
21 * the coh filesystem.
22 */
23 struct file_operations sysv_file_operations = {
24 llseek: generic_file_llseek,
25 read: generic_file_read,
26 write: generic_file_write,
27 mmap: generic_file_mmap,
28 fsync: sysv_sync_file,
29 };
30
31 struct inode_operations sysv_file_inode_operations = {
32 truncate: sysv_truncate,
33 };
34
sysv_sync_file(struct file * file,struct dentry * dentry,int datasync)35 int sysv_sync_file(struct file * file, struct dentry *dentry, int datasync)
36 {
37 struct inode *inode = dentry->d_inode;
38 int err;
39
40 err = fsync_inode_buffers(inode);
41 err |= fsync_inode_data_buffers(inode);
42 if (!(inode->i_state & I_DIRTY))
43 return err;
44 if (datasync && !(inode->i_state & I_DIRTY_DATASYNC))
45 return err;
46
47 err |= sysv_sync_inode(inode);
48 return err ? -EIO : 0;
49 }
50