1 #ifndef _LINUX_PROC_FS_H
2 #define _LINUX_PROC_FS_H
4 #include <linux/slab.h>
6 #include <linux/spinlock.h>
7 #include <linux/magic.h>
8 #include <asm/atomic.h>
11 * The proc filesystem constants/structures
15 * Offset of the first process in the /proc root directory..
17 #define FIRST_PROCESS_ENTRY 256
21 * We always define these enumerators
29 * This is not completely implemented yet. The idea is to
30 * create an in-memory tree (like the actual /proc filesystem
31 * tree) of these proc_dir_entries, so that we can dynamically
32 * add new files to /proc.
34 * The "next" pointer creates a linked list of one /proc directory,
35 * while parent/subdir create the directory structure (every
36 * /proc file has a parent, but "subdir" is NULL for all
37 * non-directory entries).
39 * "get_info" is called at "read", while "owner" is used to protect module
40 * from unloading while proc_dir_entry is in use
43 typedef int (read_proc_t)(char *page, char **start, off_t off,
44 int count, int *eof, void *data);
45 typedef int (write_proc_t)(struct file *file, const char __user *buffer,
46 unsigned long count, void *data);
47 typedef int (get_info_t)(char *, char **, off_t, int);
49 struct proc_dir_entry {
51 unsigned short namelen;
58 const struct inode_operations *proc_iops;
59 const struct file_operations *proc_fops;
62 struct proc_dir_entry *next, *parent, *subdir;
64 read_proc_t *read_proc;
65 write_proc_t *write_proc;
66 atomic_t count; /* use count */
67 int deleted; /* delete flag */
72 struct kcore_list *next;
78 struct list_head list;
79 unsigned long long paddr;
80 unsigned long long size;
86 extern struct proc_dir_entry proc_root;
87 extern struct proc_dir_entry *proc_root_fs;
88 extern struct proc_dir_entry *proc_net;
89 extern struct proc_dir_entry *proc_net_stat;
90 extern struct proc_dir_entry *proc_bus;
91 extern struct proc_dir_entry *proc_root_driver;
92 extern struct proc_dir_entry *proc_root_kcore;
94 extern spinlock_t proc_subdir_lock;
96 extern void proc_root_init(void);
97 extern void proc_misc_init(void);
101 void proc_flush_task(struct task_struct *task);
102 struct dentry *proc_pid_lookup(struct inode *dir, struct dentry * dentry, struct nameidata *);
103 int proc_pid_readdir(struct file * filp, void * dirent, filldir_t filldir);
104 unsigned long task_vsize(struct mm_struct *);
105 int task_statm(struct mm_struct *, int *, int *, int *, int *);
106 char *task_mem(struct mm_struct *, char *);
108 extern struct proc_dir_entry *create_proc_entry(const char *name, mode_t mode,
109 struct proc_dir_entry *parent);
110 extern void remove_proc_entry(const char *name, struct proc_dir_entry *parent);
112 extern struct vfsmount *proc_mnt;
113 extern int proc_fill_super(struct super_block *,void *,int);
114 extern struct inode *proc_get_inode(struct super_block *, unsigned int, struct proc_dir_entry *);
117 * These are generic /proc routines that use the internal
118 * "struct proc_dir_entry" tree to traverse the filesystem.
120 * The /proc root directory has extended versions to take care
121 * of the /proc/<pid> subdirectories.
123 extern int proc_readdir(struct file *, void *, filldir_t);
124 extern struct dentry *proc_lookup(struct inode *, struct dentry *, struct nameidata *);
126 extern const struct file_operations proc_kcore_operations;
127 extern const struct file_operations proc_kmsg_operations;
128 extern const struct file_operations ppc_htab_operations;
134 extern void proc_tty_init(void);
135 extern void proc_tty_register_driver(struct tty_driver *driver);
136 extern void proc_tty_unregister_driver(struct tty_driver *driver);
141 #ifdef CONFIG_PROC_DEVICETREE
144 extern void proc_device_tree_init(void);
145 extern void proc_device_tree_add_node(struct device_node *, struct proc_dir_entry *);
146 extern void proc_device_tree_add_prop(struct proc_dir_entry *pde, struct property *prop);
147 extern void proc_device_tree_remove_prop(struct proc_dir_entry *pde,
148 struct property *prop);
149 extern void proc_device_tree_update_prop(struct proc_dir_entry *pde,
150 struct property *newprop,
151 struct property *oldprop);
152 #endif /* CONFIG_PROC_DEVICETREE */
154 extern struct proc_dir_entry *proc_symlink(const char *,
155 struct proc_dir_entry *, const char *);
156 extern struct proc_dir_entry *proc_mkdir(const char *,struct proc_dir_entry *);
157 extern struct proc_dir_entry *proc_mkdir_mode(const char *name, mode_t mode,
158 struct proc_dir_entry *parent);
160 static inline struct proc_dir_entry *create_proc_read_entry(const char *name,
161 mode_t mode, struct proc_dir_entry *base,
162 read_proc_t *read_proc, void * data)
164 struct proc_dir_entry *res=create_proc_entry(name,mode,base);
166 res->read_proc=read_proc;
172 static inline struct proc_dir_entry *create_proc_info_entry(const char *name,
173 mode_t mode, struct proc_dir_entry *base, get_info_t *get_info)
175 struct proc_dir_entry *res=create_proc_entry(name,mode,base);
176 if (res) res->get_info=get_info;
180 static inline struct proc_dir_entry *proc_net_create(const char *name,
181 mode_t mode, get_info_t *get_info)
183 return create_proc_info_entry(name,mode,proc_net,get_info);
186 static inline struct proc_dir_entry *proc_net_fops_create(const char *name,
187 mode_t mode, const struct file_operations *fops)
189 struct proc_dir_entry *res = create_proc_entry(name, mode, proc_net);
191 res->proc_fops = fops;
195 static inline void proc_net_remove(const char *name)
197 remove_proc_entry(name,proc_net);
202 #define proc_root_driver NULL
203 #define proc_net NULL
204 #define proc_bus NULL
206 #define proc_net_fops_create(name, mode, fops) ({ (void)(mode), NULL; })
207 #define proc_net_create(name, mode, info) ({ (void)(mode), NULL; })
208 static inline void proc_net_remove(const char *name) {}
210 static inline void proc_flush_task(struct task_struct *task) { }
212 static inline struct proc_dir_entry *create_proc_entry(const char *name,
213 mode_t mode, struct proc_dir_entry *parent) { return NULL; }
215 #define remove_proc_entry(name, parent) do {} while (0)
217 static inline struct proc_dir_entry *proc_symlink(const char *name,
218 struct proc_dir_entry *parent,const char *dest) {return NULL;}
219 static inline struct proc_dir_entry *proc_mkdir(const char *name,
220 struct proc_dir_entry *parent) {return NULL;}
222 static inline struct proc_dir_entry *create_proc_read_entry(const char *name,
223 mode_t mode, struct proc_dir_entry *base,
224 read_proc_t *read_proc, void * data) { return NULL; }
225 static inline struct proc_dir_entry *create_proc_info_entry(const char *name,
226 mode_t mode, struct proc_dir_entry *base, get_info_t *get_info)
230 static inline void proc_tty_register_driver(struct tty_driver *driver) {};
231 static inline void proc_tty_unregister_driver(struct tty_driver *driver) {};
233 extern struct proc_dir_entry proc_root;
235 #endif /* CONFIG_PROC_FS */
237 #if !defined(CONFIG_PROC_KCORE)
238 static inline void kclist_add(struct kcore_list *new, void *addr, size_t size)
242 extern void kclist_add(struct kcore_list *, void *, size_t);
246 int (*proc_get_link)(struct inode *, struct dentry **, struct vfsmount **);
247 int (*proc_read)(struct task_struct *task, char *page);
254 struct proc_dir_entry *pde;
255 struct inode vfs_inode;
258 static inline struct proc_inode *PROC_I(const struct inode *inode)
260 return container_of(inode, struct proc_inode, vfs_inode);
263 static inline struct proc_dir_entry *PDE(const struct inode *inode)
265 return PROC_I(inode)->pde;
268 struct proc_maps_private {
270 struct task_struct *task;
272 struct vm_area_struct *tail_vma;
276 #endif /* _LINUX_PROC_FS_H */