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 = filemap_splice_read,
23 };
24
25 static int minix_setattr(struct mnt_idmap *idmap,
26 struct dentry *dentry, struct iattr *attr)
27 {
28 struct inode *inode = d_inode(dentry);
29 int error;
30
31 error = setattr_prepare(&nop_mnt_idmap, dentry, attr);
32 if (error)
33 return error;
34
35 if ((attr->ia_valid & ATTR_SIZE) &&
36 attr->ia_size != i_size_read(inode)) {
37 error = inode_newsize_ok(inode, attr->ia_size);
38 if (error)
39 return error;
40
41 truncate_setsize(inode, attr->ia_size);
42 minix_truncate(inode);
43 }
44
45 setattr_copy(&nop_mnt_idmap, inode, attr);
46 mark_inode_dirty(inode);
47 return 0;
48 }
49
50 const struct inode_operations minix_file_inode_operations = {
51 .setattr = minix_setattr,
52 .getattr = minix_getattr,
53 };
54
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.