1 files changed, 259 insertions, 0 deletions
diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h
new file mode 100644
index 000000000000..59e505261fd6
--- /dev/null
+++ b/include/linux/proc_fs.h
@@ -0,0 +1,259 @@
+#ifndef _LINUX_PROC_FS_H
+#define _LINUX_PROC_FS_H
+
+#include <linux/config.h>
+#include <linux/slab.h>
+#include <linux/fs.h>
+#include <asm/atomic.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,
+};
+
+#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 __user *buffer,
+			   unsigned long count, void *data);
+typedef int (get_info_t)(char *, char **, off_t, int);
+
+struct proc_dir_entry {
+	unsigned int 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 */
+};
+
+struct kcore_list {
+	struct kcore_list *next;
+	unsigned long addr;
+	size_t size;
+};
+
+#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_net_stat;
+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 mm_struct;
+
+struct dentry *proc_pid_lookup(struct inode *dir, struct dentry * dentry, struct nameidata *);
+struct dentry *proc_pid_unhash(struct task_struct *p);
+void proc_pid_flush(struct dentry *proc_dentry);
+int proc_pid_readdir(struct file * filp, void * dirent, filldir_t filldir);
+unsigned long task_vsize(struct mm_struct *);
+int task_statm(struct mm_struct *, int *, int *, int *, int *);
+char *task_mem(struct mm_struct *, char *);
+
+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 int proc_fill_super(struct super_block *,void *,int);
+extern struct inode *proc_get_inode(struct super_block *, unsigned 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 *, struct nameidata *);
+
+extern struct file_operations proc_kcore_operations;
+extern struct file_operations proc_kmsg_operations;
+extern struct file_operations ppc_htab_operations;
+
+/*
+ * proc_tty.c
+ */
+struct tty_driver;
+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
+ */
+struct device_node;
+extern void proc_device_tree_init(void);
+#ifdef CONFIG_PROC_DEVICETREE
+extern void proc_device_tree_add_node(struct device_node *, struct proc_dir_entry *);
+#else /* !CONFIG_PROC_DEVICETREE */
+static inline void proc_device_tree_add_node(struct device_node *np, struct proc_dir_entry *pde)
+{
+	return;
+}
+#endif /* CONFIG_PROC_DEVICETREE */
+
+extern struct proc_dir_entry *proc_symlink(const char *,
+		struct proc_dir_entry *, const char *);
+extern struct proc_dir_entry *proc_mkdir(const char *,struct proc_dir_entry *);
+extern struct proc_dir_entry *proc_mkdir_mode(const char *name, mode_t mode,
+			struct proc_dir_entry *parent);
+
+static 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;
+}
+ 
+static 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;
+}
+ 
+static 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);
+}
+
+static inline struct proc_dir_entry *proc_net_fops_create(const char *name,
+	mode_t mode, struct file_operations *fops)
+{
+	struct proc_dir_entry *res = create_proc_entry(name, mode, proc_net);
+	if (res)
+		res->proc_fops = fops;
+	return res;
+}
+
+static inline void proc_net_remove(const char *name)
+{
+	remove_proc_entry(name,proc_net);
+}
+
+#else
+
+#define proc_root_driver NULL
+#define proc_net NULL
+#define proc_bus NULL
+
+#define proc_net_fops_create(name, mode, fops)  ({ (void)(mode), NULL; })
+#define proc_net_create(name, mode, info)	({ (void)(mode), NULL; })
+static inline void proc_net_remove(const char *name) {}
+
+static inline struct dentry *proc_pid_unhash(struct task_struct *p) { return NULL; }
+static inline void proc_pid_flush(struct dentry *proc_dentry) { }
+
+static inline struct proc_dir_entry *create_proc_entry(const char *name,
+	mode_t mode, struct proc_dir_entry *parent) { return NULL; }
+
+#define remove_proc_entry(name, parent) do {} while (0)
+
+static inline struct proc_dir_entry *proc_symlink(const char *name,
+		struct proc_dir_entry *parent,const char *dest) {return NULL;}
+static inline struct proc_dir_entry *proc_mkdir(const char *name,
+	struct proc_dir_entry *parent) {return NULL;}
+
+static 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) { return NULL; }
+static 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; }
+
+struct tty_driver;
+static inline void proc_tty_register_driver(struct tty_driver *driver) {};
+static inline void proc_tty_unregister_driver(struct tty_driver *driver) {};
+
+extern struct proc_dir_entry proc_root;
+
+#endif /* CONFIG_PROC_FS */
+
+#if !defined(CONFIG_PROC_KCORE)
+static inline void kclist_add(struct kcore_list *new, void *addr, size_t size)
+{
+}
+#else
+extern void kclist_add(struct kcore_list *, void *, size_t);
+#endif
+
+struct proc_inode {
+	struct task_struct *task;
+	int type;
+	union {
+		int (*proc_get_link)(struct inode *, struct dentry **, struct vfsmount **);
+		int (*proc_read)(struct task_struct *task, char *page);
+	} op;
+	struct proc_dir_entry *pde;
+	struct inode vfs_inode;
+};
+
+static inline struct proc_inode *PROC_I(const struct inode *inode)
+{
+	return container_of(inode, struct proc_inode, vfs_inode);
+}
+
+static inline struct proc_dir_entry *PDE(const struct inode *inode)
+{
+	return PROC_I(inode)->pde;
+}
+
+#endif /* _LINUX_PROC_FS_H */