1 // SPDX-License-Identifier: GPL-2.0
3 * linux/fs/minix/file.c
5 * Copyright (C) 1991, 1992 Linus Torvalds
7 * minix regular file handling primitives
13 * We have mostly NULLs here: the current defaults are OK for
14 * the minix filesystem.
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
,
25 static int minix_setattr(struct user_namespace
*mnt_userns
,
26 struct dentry
*dentry
, struct iattr
*attr
)
28 struct inode
*inode
= d_inode(dentry
);
31 error
= setattr_prepare(&init_user_ns
, dentry
, attr
);
35 if ((attr
->ia_valid
& ATTR_SIZE
) &&
36 attr
->ia_size
!= i_size_read(inode
)) {
37 error
= inode_newsize_ok(inode
, attr
->ia_size
);
41 truncate_setsize(inode
, attr
->ia_size
);
42 minix_truncate(inode
);
45 setattr_copy(&init_user_ns
, inode
, attr
);
46 mark_inode_dirty(inode
);
50 const struct inode_operations minix_file_inode_operations
= {
51 .setattr
= minix_setattr
,
52 .getattr
= minix_getattr
,