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 "sysv.h"
17
18/*
19 * We have mostly NULLs here: the current defaults are OK for
20 * the coh filesystem.
21 */
22const struct file_operations sysv_file_operations = {
23	.llseek		= generic_file_llseek,
24	.read		= do_sync_read,
25	.aio_read	= generic_file_aio_read,
26	.write		= do_sync_write,
27	.aio_write	= generic_file_aio_write,
28	.mmap		= generic_file_mmap,
29	.fsync		= generic_file_fsync,
30	.splice_read	= generic_file_splice_read,
31};
32
33static int sysv_setattr(struct dentry *dentry, struct iattr *attr)
34{
35	struct inode *inode = dentry->d_inode;
36	int error;
37
38	error = inode_change_ok(inode, attr);
39	if (error)
40		return error;
41
42	if ((attr->ia_valid & ATTR_SIZE) &&
43	    attr->ia_size != i_size_read(inode)) {
44		error = vmtruncate(inode, attr->ia_size);
45		if (error)
46			return error;
 
 
47	}
48
49	setattr_copy(inode, attr);
50	mark_inode_dirty(inode);
51	return 0;
52}
53
54const struct inode_operations sysv_file_inode_operations = {
55	.truncate	= sysv_truncate,
56	.setattr	= sysv_setattr,
57	.getattr	= sysv_getattr,
58};

 1// SPDX-License-Identifier: GPL-2.0
 2/*
 3 *  linux/fs/sysv/file.c
 4 *
 5 *  minix/file.c
 6 *  Copyright (C) 1991, 1992  Linus Torvalds
 7 *
 8 *  coh/file.c
 9 *  Copyright (C) 1993  Pascal Haible, Bruno Haible
10 *
11 *  sysv/file.c
12 *  Copyright (C) 1993  Bruno Haible
13 *
14 *  SystemV/Coherent regular file handling primitives
15 */
16
17#include "sysv.h"
18
19/*
20 * We have mostly NULLs here: the current defaults are OK for
21 * the coh filesystem.
22 */
23const struct file_operations sysv_file_operations = {
24	.llseek		= generic_file_llseek,
25	.read_iter	= generic_file_read_iter,
26	.write_iter	= generic_file_write_iter,
 
 
27	.mmap		= generic_file_mmap,
28	.fsync		= generic_file_fsync,
29	.splice_read	= generic_file_splice_read,
30};
31
32static int sysv_setattr(struct dentry *dentry, struct iattr *attr)
33{
34	struct inode *inode = d_inode(dentry);
35	int error;
36
37	error = setattr_prepare(dentry, attr);
38	if (error)
39		return error;
40
41	if ((attr->ia_valid & ATTR_SIZE) &&
42	    attr->ia_size != i_size_read(inode)) {
43		error = inode_newsize_ok(inode, attr->ia_size);
44		if (error)
45			return error;
46		truncate_setsize(inode, attr->ia_size);
47		sysv_truncate(inode);
48	}
49
50	setattr_copy(inode, attr);
51	mark_inode_dirty(inode);
52	return 0;
53}
54
55const struct inode_operations sysv_file_inode_operations = {
 
56	.setattr	= sysv_setattr,
57	.getattr	= sysv_getattr,
58};