1#ifndef _LINUX_PROC_FS_H
2#define _LINUX_PROC_FS_H
3
4#include <linux/slab.h>
5#include <linux/fs.h>
6#include <linux/spinlock.h>
7#include <linux/magic.h>
8#include <asm/atomic.h>
9
10struct net;
11struct completion;
12struct mm_struct;
13
14
15
16
17
18
19
20
21#define FIRST_PROCESS_ENTRY 256
22
23
24#define PROC_NUMBUF 13
25
26
27
28
29
30enum {
31 PROC_ROOT_INO = 1,
32};
33
34
35
36
37
38
39
40
41
42
43
44
45
46typedef int (read_proc_t)(char *page, char **start, off_t off,
47 int count, int *eof, void *data);
48typedef int (write_proc_t)(struct file *file, const char __user *buffer,
49 unsigned long count, void *data);
50
51struct proc_dir_entry {
52 unsigned int low_ino;
53 unsigned short namelen;
54 const char *name;
55 mode_t mode;
56 nlink_t nlink;
57 uid_t uid;
58 gid_t gid;
59 loff_t size;
60 const struct inode_operations *proc_iops;
61
62
63
64
65
66
67
68
69 const struct file_operations *proc_fops;
70 struct proc_dir_entry *next, *parent, *subdir;
71 void *data;
72 read_proc_t *read_proc;
73 write_proc_t *write_proc;
74 atomic_t count;
75 int pde_users;
76 spinlock_t pde_unload_lock;
77 struct completion *pde_unload_completion;
78 struct list_head pde_openers;
79};
80
81enum kcore_type {
82 KCORE_TEXT,
83 KCORE_VMALLOC,
84 KCORE_RAM,
85 KCORE_VMEMMAP,
86 KCORE_OTHER,
87};
88
89struct kcore_list {
90 struct list_head list;
91 unsigned long addr;
92 size_t size;
93 int type;
94};
95
96struct vmcore {
97 struct list_head list;
98 unsigned long long paddr;
99 unsigned long long size;
100 loff_t offset;
101};
102
103#ifdef CONFIG_PROC_FS
104
105extern void proc_root_init(void);
106
107void proc_flush_task(struct task_struct *task);
108
109extern struct proc_dir_entry *create_proc_entry(const char *name, mode_t mode,
110 struct proc_dir_entry *parent);
111struct proc_dir_entry *proc_create_data(const char *name, mode_t mode,
112 struct proc_dir_entry *parent,
113 const struct file_operations *proc_fops,
114 void *data);
115extern void remove_proc_entry(const char *name, struct proc_dir_entry *parent);
116
117struct pid_namespace;
118
119extern int pid_ns_prepare_proc(struct pid_namespace *ns);
120extern void pid_ns_release_proc(struct pid_namespace *ns);
121
122
123
124
125struct tty_driver;
126extern void proc_tty_init(void);
127extern void proc_tty_register_driver(struct tty_driver *driver);
128extern void proc_tty_unregister_driver(struct tty_driver *driver);
129
130
131
132
133#ifdef CONFIG_PROC_DEVICETREE
134struct device_node;
135struct property;
136extern void proc_device_tree_init(void);
137extern void proc_device_tree_add_node(struct device_node *, struct proc_dir_entry *);
138extern void proc_device_tree_add_prop(struct proc_dir_entry *pde, struct property *prop);
139extern void proc_device_tree_remove_prop(struct proc_dir_entry *pde,
140 struct property *prop);
141extern void proc_device_tree_update_prop(struct proc_dir_entry *pde,
142 struct property *newprop,
143 struct property *oldprop);
144#endif
145
146extern struct proc_dir_entry *proc_symlink(const char *,
147 struct proc_dir_entry *, const char *);
148extern struct proc_dir_entry *proc_mkdir(const char *,struct proc_dir_entry *);
149extern struct proc_dir_entry *proc_mkdir_mode(const char *name, mode_t mode,
150 struct proc_dir_entry *parent);
151
152static inline struct proc_dir_entry *proc_create(const char *name, mode_t mode,
153 struct proc_dir_entry *parent, const struct file_operations *proc_fops)
154{
155 return proc_create_data(name, mode, parent, proc_fops, NULL);
156}
157
158static inline struct proc_dir_entry *create_proc_read_entry(const char *name,
159 mode_t mode, struct proc_dir_entry *base,
160 read_proc_t *read_proc, void * data)
161{
162 struct proc_dir_entry *res=create_proc_entry(name,mode,base);
163 if (res) {
164 res->read_proc=read_proc;
165 res->data=data;
166 }
167 return res;
168}
169
170extern struct proc_dir_entry *proc_net_fops_create(struct net *net,
171 const char *name, mode_t mode, const struct file_operations *fops);
172extern void proc_net_remove(struct net *net, const char *name);
173extern struct proc_dir_entry *proc_net_mkdir(struct net *net, const char *name,
174 struct proc_dir_entry *parent);
175
176
177
178extern void set_mm_exe_file(struct mm_struct *mm, struct file *new_exe_file);
179extern struct file *get_mm_exe_file(struct mm_struct *mm);
180extern void dup_mm_exe_file(struct mm_struct *oldmm, struct mm_struct *newmm);
181
182#else
183
184#define proc_net_fops_create(net, name, mode, fops) ({ (void)(mode), NULL; })
185static inline void proc_net_remove(struct net *net, const char *name) {}
186
187static inline void proc_flush_task(struct task_struct *task)
188{
189}
190
191static inline struct proc_dir_entry *create_proc_entry(const char *name,
192 mode_t mode, struct proc_dir_entry *parent) { return NULL; }
193static inline struct proc_dir_entry *proc_create(const char *name,
194 mode_t mode, struct proc_dir_entry *parent,
195 const struct file_operations *proc_fops)
196{
197 return NULL;
198}
199static inline struct proc_dir_entry *proc_create_data(const char *name,
200 mode_t mode, struct proc_dir_entry *parent,
201 const struct file_operations *proc_fops, void *data)
202{
203 return NULL;
204}
205#define remove_proc_entry(name, parent) do {} while (0)
206
207static inline struct proc_dir_entry *proc_symlink(const char *name,
208 struct proc_dir_entry *parent,const char *dest) {return NULL;}
209static inline struct proc_dir_entry *proc_mkdir(const char *name,
210 struct proc_dir_entry *parent) {return NULL;}
211
212static inline struct proc_dir_entry *create_proc_read_entry(const char *name,
213 mode_t mode, struct proc_dir_entry *base,
214 read_proc_t *read_proc, void * data) { return NULL; }
215
216struct tty_driver;
217static inline void proc_tty_register_driver(struct tty_driver *driver) {};
218static inline void proc_tty_unregister_driver(struct tty_driver *driver) {};
219
220static inline int pid_ns_prepare_proc(struct pid_namespace *ns)
221{
222 return 0;
223}
224
225static inline void pid_ns_release_proc(struct pid_namespace *ns)
226{
227}
228
229static inline void set_mm_exe_file(struct mm_struct *mm,
230 struct file *new_exe_file)
231{}
232
233static inline struct file *get_mm_exe_file(struct mm_struct *mm)
234{
235 return NULL;
236}
237
238static inline void dup_mm_exe_file(struct mm_struct *oldmm,
239 struct mm_struct *newmm)
240{}
241
242#endif
243
244#if !defined(CONFIG_PROC_KCORE)
245static inline void
246kclist_add(struct kcore_list *new, void *addr, size_t size, int type)
247{
248}
249#else
250extern void kclist_add(struct kcore_list *, void *, size_t, int type);
251#endif
252
253union proc_op {
254 int (*proc_get_link)(struct inode *, struct path *);
255 int (*proc_read)(struct task_struct *task, char *page);
256 int (*proc_show)(struct seq_file *m,
257 struct pid_namespace *ns, struct pid *pid,
258 struct task_struct *task);
259};
260
261struct ctl_table_header;
262struct ctl_table;
263
264struct proc_inode {
265 struct pid *pid;
266 int fd;
267 union proc_op op;
268 struct proc_dir_entry *pde;
269 struct ctl_table_header *sysctl;
270 struct ctl_table *sysctl_entry;
271 struct inode vfs_inode;
272};
273
274static inline struct proc_inode *PROC_I(const struct inode *inode)
275{
276 return container_of(inode, struct proc_inode, vfs_inode);
277}
278
279static inline struct proc_dir_entry *PDE(const struct inode *inode)
280{
281 return PROC_I(inode)->pde;
282}
283
284static inline struct net *PDE_NET(struct proc_dir_entry *pde)
285{
286 return pde->parent->data;
287}
288
289struct proc_maps_private {
290 struct pid *pid;
291 struct task_struct *task;
292#ifdef CONFIG_MMU
293 struct vm_area_struct *tail_vma;
294#endif
295};
296
297#endif
298