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12#include <linux/fs.h>
13#include <linux/export.h>
14#include <linux/stat.h>
15#include <linux/time.h>
16#include <linux/namei.h>
17#include <linux/poll.h>
18#include <linux/fiemap.h>
19
20static int bad_file_open(struct inode *inode, struct file *filp)
21{
22 return -EIO;
23}
24
25static const struct file_operations bad_file_ops =
26{
27 .open = bad_file_open,
28};
29
30static int bad_inode_create (struct inode *dir, struct dentry *dentry,
31 umode_t mode, bool excl)
32{
33 return -EIO;
34}
35
36static struct dentry *bad_inode_lookup(struct inode *dir,
37 struct dentry *dentry, unsigned int flags)
38{
39 return ERR_PTR(-EIO);
40}
41
42static int bad_inode_link (struct dentry *old_dentry, struct inode *dir,
43 struct dentry *dentry)
44{
45 return -EIO;
46}
47
48static int bad_inode_unlink(struct inode *dir, struct dentry *dentry)
49{
50 return -EIO;
51}
52
53static int bad_inode_symlink (struct inode *dir, struct dentry *dentry,
54 const char *symname)
55{
56 return -EIO;
57}
58
59static int bad_inode_mkdir(struct inode *dir, struct dentry *dentry,
60 umode_t mode)
61{
62 return -EIO;
63}
64
65static int bad_inode_rmdir (struct inode *dir, struct dentry *dentry)
66{
67 return -EIO;
68}
69
70static int bad_inode_mknod (struct inode *dir, struct dentry *dentry,
71 umode_t mode, dev_t rdev)
72{
73 return -EIO;
74}
75
76static int bad_inode_rename2(struct inode *old_dir, struct dentry *old_dentry,
77 struct inode *new_dir, struct dentry *new_dentry,
78 unsigned int flags)
79{
80 return -EIO;
81}
82
83static int bad_inode_readlink(struct dentry *dentry, char __user *buffer,
84 int buflen)
85{
86 return -EIO;
87}
88
89static int bad_inode_permission(struct inode *inode, int mask)
90{
91 return -EIO;
92}
93
94static int bad_inode_getattr(const struct path *path, struct kstat *stat,
95 u32 request_mask, unsigned int query_flags)
96{
97 return -EIO;
98}
99
100static int bad_inode_setattr(struct dentry *direntry, struct iattr *attrs)
101{
102 return -EIO;
103}
104
105static ssize_t bad_inode_listxattr(struct dentry *dentry, char *buffer,
106 size_t buffer_size)
107{
108 return -EIO;
109}
110
111static const char *bad_inode_get_link(struct dentry *dentry,
112 struct inode *inode,
113 struct delayed_call *done)
114{
115 return ERR_PTR(-EIO);
116}
117
118static struct posix_acl *bad_inode_get_acl(struct inode *inode, int type)
119{
120 return ERR_PTR(-EIO);
121}
122
123static int bad_inode_fiemap(struct inode *inode,
124 struct fiemap_extent_info *fieinfo, u64 start,
125 u64 len)
126{
127 return -EIO;
128}
129
130static int bad_inode_update_time(struct inode *inode, struct timespec64 *time,
131 int flags)
132{
133 return -EIO;
134}
135
136static int bad_inode_atomic_open(struct inode *inode, struct dentry *dentry,
137 struct file *file, unsigned int open_flag,
138 umode_t create_mode)
139{
140 return -EIO;
141}
142
143static int bad_inode_tmpfile(struct inode *inode, struct dentry *dentry,
144 umode_t mode)
145{
146 return -EIO;
147}
148
149static int bad_inode_set_acl(struct inode *inode, struct posix_acl *acl,
150 int type)
151{
152 return -EIO;
153}
154
155static const struct inode_operations bad_inode_ops =
156{
157 .create = bad_inode_create,
158 .lookup = bad_inode_lookup,
159 .link = bad_inode_link,
160 .unlink = bad_inode_unlink,
161 .symlink = bad_inode_symlink,
162 .mkdir = bad_inode_mkdir,
163 .rmdir = bad_inode_rmdir,
164 .mknod = bad_inode_mknod,
165 .rename = bad_inode_rename2,
166 .readlink = bad_inode_readlink,
167 .permission = bad_inode_permission,
168 .getattr = bad_inode_getattr,
169 .setattr = bad_inode_setattr,
170 .listxattr = bad_inode_listxattr,
171 .get_link = bad_inode_get_link,
172 .get_acl = bad_inode_get_acl,
173 .fiemap = bad_inode_fiemap,
174 .update_time = bad_inode_update_time,
175 .atomic_open = bad_inode_atomic_open,
176 .tmpfile = bad_inode_tmpfile,
177 .set_acl = bad_inode_set_acl,
178};
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199void make_bad_inode(struct inode *inode)
200{
201 remove_inode_hash(inode);
202
203 inode->i_mode = S_IFREG;
204 inode->i_atime = inode->i_mtime = inode->i_ctime =
205 current_time(inode);
206 inode->i_op = &bad_inode_ops;
207 inode->i_opflags &= ~IOP_XATTR;
208 inode->i_fop = &bad_file_ops;
209}
210EXPORT_SYMBOL(make_bad_inode);
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224
225bool is_bad_inode(struct inode *inode)
226{
227 return (inode->i_op == &bad_inode_ops);
228}
229
230EXPORT_SYMBOL(is_bad_inode);
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237
238void iget_failed(struct inode *inode)
239{
240 make_bad_inode(inode);
241 unlock_new_inode(inode);
242 iput(inode);
243}
244EXPORT_SYMBOL(iget_failed);
245