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