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