1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  *  linux/fs/minix/file.c
4  *
5  *  Copyright (C) 1991, 1992 Linus Torvalds
6  *
7  *  minix regular file handling primitives
8  */
9 
10 #include "minix.h"
11 
12 /*
13  * We have mostly NULLs here: the current defaults are OK for
14  * the minix filesystem.
15  */
16 const struct file_operations minix_file_operations = {
17 	.llseek		= generic_file_llseek,
18 	.read_iter	= generic_file_read_iter,
19 	.write_iter	= generic_file_write_iter,
20 	.mmap		= generic_file_mmap,
21 	.fsync		= generic_file_fsync,
22 	.splice_read	= generic_file_splice_read,
23 };
24 
minix_setattr(struct dentry * dentry,struct iattr * attr)25 static int minix_setattr(struct dentry *dentry, struct iattr *attr)
26 {
27 	struct inode *inode = d_inode(dentry);
28 	int error;
29 
30 	error = setattr_prepare(dentry, attr);
31 	if (error)
32 		return error;
33 
34 	if ((attr->ia_valid & ATTR_SIZE) &&
35 	    attr->ia_size != i_size_read(inode)) {
36 		error = inode_newsize_ok(inode, attr->ia_size);
37 		if (error)
38 			return error;
39 
40 		truncate_setsize(inode, attr->ia_size);
41 		minix_truncate(inode);
42 	}
43 
44 	setattr_copy(inode, attr);
45 	mark_inode_dirty(inode);
46 	return 0;
47 }
48 
49 const struct inode_operations minix_file_inode_operations = {
50 	.setattr	= minix_setattr,
51 	.getattr	= minix_getattr,
52 };
53