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#ifndef _LINUX_PROC_FS_H
#define _LINUX_PROC_FS_H
#include <linux/config.h>
#include <linux/slab.h>
/*
* The proc filesystem constants/structures
*/
/*
* Offset of the first process in the /proc root directory..
*/
#define FIRST_PROCESS_ENTRY 256
/*
* We always define these enumerators
*/
enum {
PROC_ROOT_INO = 1,
};
/* Finally, the dynamically allocatable proc entries are reserved: */
#define PROC_DYNAMIC_FIRST 4096
#define PROC_NDYNAMIC 4096
#define PROC_SUPER_MAGIC 0x9fa0
/*
* This is not completely implemented yet. The idea is to
* create an in-memory tree (like the actual /proc filesystem
* tree) of these proc_dir_entries, so that we can dynamically
* add new files to /proc.
*
* The "next" pointer creates a linked list of one /proc directory,
* while parent/subdir create the directory structure (every
* /proc file has a parent, but "subdir" is NULL for all
* non-directory entries).
*
* "get_info" is called at "read", while "owner" is used to protect module
* from unloading while proc_dir_entry is in use
*/
typedef int (read_proc_t)(char *page, char **start, off_t off,
int count, int *eof, void *data);
typedef int (write_proc_t)(struct file *file, const char *buffer,
unsigned long count, void *data);
typedef int (get_info_t)(char *, char **, off_t, int);
struct proc_dir_entry {
unsigned short low_ino;
unsigned short namelen;
const char *name;
mode_t mode;
nlink_t nlink;
uid_t uid;
gid_t gid;
unsigned long size;
struct inode_operations * proc_iops;
struct file_operations * proc_fops;
get_info_t *get_info;
struct module *owner;
struct proc_dir_entry *next, *parent, *subdir;
void *data;
read_proc_t *read_proc;
write_proc_t *write_proc;
atomic_t count; /* use count */
int deleted; /* delete flag */
kdev_t rdev;
};
#define PROC_INODE_PROPER(inode) ((inode)->i_ino & ~0xffff)
#ifdef CONFIG_PROC_FS
extern struct proc_dir_entry proc_root;
extern struct proc_dir_entry *proc_root_fs;
extern struct proc_dir_entry *proc_net;
extern struct proc_dir_entry *proc_bus;
extern struct proc_dir_entry *proc_root_driver;
extern struct proc_dir_entry *proc_root_kcore;
extern void proc_root_init(void);
extern void proc_misc_init(void);
struct dentry *proc_pid_lookup(struct inode *dir, struct dentry * dentry);
void proc_pid_delete_inode(struct inode *inode);
int proc_pid_readdir(struct file * filp, void * dirent, filldir_t filldir);
extern struct proc_dir_entry *create_proc_entry(const char *name, mode_t mode,
struct proc_dir_entry *parent);
extern void remove_proc_entry(const char *name, struct proc_dir_entry *parent);
extern struct vfsmount *proc_mnt;
extern struct super_block *proc_read_super(struct super_block *,void *,int);
extern struct inode * proc_get_inode(struct super_block *, int, struct proc_dir_entry *);
extern int proc_match(int, const char *,struct proc_dir_entry *);
/*
* These are generic /proc routines that use the internal
* "struct proc_dir_entry" tree to traverse the filesystem.
*
* The /proc root directory has extended versions to take care
* of the /proc/<pid> subdirectories.
*/
extern int proc_readdir(struct file *, void *, filldir_t);
extern struct dentry *proc_lookup(struct inode *, struct dentry *);
extern struct file_operations proc_kcore_operations;
extern struct file_operations proc_kmsg_operations;
extern struct file_operations ppc_htab_operations;
/*
* proc_tty.c
*/
extern void proc_tty_init(void);
extern void proc_tty_register_driver(struct tty_driver *driver);
extern void proc_tty_unregister_driver(struct tty_driver *driver);
/*
* proc_devtree.c
*/
extern void proc_device_tree_init(void);
extern struct proc_dir_entry *proc_symlink(const char *,
struct proc_dir_entry *, const char *);
extern struct proc_dir_entry *proc_mknod(const char *,mode_t,
struct proc_dir_entry *,kdev_t);
extern struct proc_dir_entry *proc_mkdir(const char *,struct proc_dir_entry *);
extern inline struct proc_dir_entry *create_proc_read_entry(const char *name,
mode_t mode, struct proc_dir_entry *base,
read_proc_t *read_proc, void * data)
{
struct proc_dir_entry *res=create_proc_entry(name,mode,base);
if (res) {
res->read_proc=read_proc;
res->data=data;
}
return res;
}
extern inline struct proc_dir_entry *create_proc_info_entry(const char *name,
mode_t mode, struct proc_dir_entry *base, get_info_t *get_info)
{
struct proc_dir_entry *res=create_proc_entry(name,mode,base);
if (res) res->get_info=get_info;
return res;
}
extern inline struct proc_dir_entry *proc_net_create(const char *name,
mode_t mode, get_info_t *get_info)
{
return create_proc_info_entry(name,mode,proc_net,get_info);
}
extern inline void proc_net_remove(const char *name)
{
remove_proc_entry(name,proc_net);
}
#else
extern inline struct proc_dir_entry *proc_net_create(const char *name, mode_t mode,
get_info_t *get_info) {return NULL;}
extern inline void proc_net_remove(const char *name) {}
extern inline struct proc_dir_entry *create_proc_entry(const char *name,
mode_t mode, struct proc_dir_entry *parent) { return NULL; }
extern inline void remove_proc_entry(const char *name, struct proc_dir_entry *parent) {};
extern inline struct proc_dir_entry *proc_symlink(const char *name,
struct proc_dir_entry *parent,char *dest) {return NULL;}
extern inline struct proc_dir_entry *proc_mknod(const char *name,mode_t mode,
struct proc_dir_entry *parent,kdev_t rdev) {return NULL;}
extern inline struct proc_dir_entry *proc_mkdir(const char *name,
struct proc_dir_entry *parent) {return NULL;}
extern inline struct proc_dir_entry *create_proc_read_entry(const char *name,
mode_t mode, struct proc_dir_entry *base,
int (*read_proc)(char *, char **, off_t, int, int *, void *),
void * data) { return NULL; }
extern inline struct proc_dir_entry *create_proc_info_entry(const char *name,
mode_t mode, struct proc_dir_entry *base, get_info_t *get_info)
{ return NULL; }
extern inline void proc_tty_register_driver(struct tty_driver *driver) {};
extern inline void proc_tty_unregister_driver(struct tty_driver *driver) {};
extern struct proc_dir_entry proc_root;
#endif /* CONFIG_PROC_FS */
#endif /* _LINUX_PROC_FS_H */
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