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Commit 59d8053f authored by David Howells's avatar David Howells Committed by Al Viro
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proc: Move non-public stuff from linux/proc_fs.h to fs/proc/internal.h 



Move non-public declarations and definitions from linux/proc_fs.h to
fs/proc/internal.h.

Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent c30480b9

fs/proc/internal.h

+196 −111
Original line number Diff line number Diff line 
/* internal.h: internal procfs definitions

/* Internal procfs definitions

 *

 * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.

 * Written by David Howells (dhowells@redhat.com)
@@ -9,81 +9,66 @@ 
 * 2 of the License, or (at your option) any later version.

 */



#include <linux/sched.h>

#include <linux/proc_fs.h>

#include <linux/proc_ns.h>

#include <linux/spinlock.h>

#include <linux/atomic.h>

#include <linux/binfmts.h>



struct ctl_table_header;

struct mempolicy;



extern struct proc_dir_entry proc_root;

extern void proc_self_init(void);

#ifdef CONFIG_PROC_SYSCTL

extern int proc_sys_init(void);

extern void sysctl_head_put(struct ctl_table_header *head);

#else

static inline void proc_sys_init(void) { }

static inline void sysctl_head_put(struct ctl_table_header *head) { }

#endif

#ifdef CONFIG_NET

extern int proc_net_init(void);

#else

static inline int proc_net_init(void) { return 0; }

#endif



struct vmalloc_info {

	unsigned long	used;

	unsigned long	largest_chunk;

/*

 * 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).

 */

struct proc_dir_entry {

	unsigned int low_ino;

	umode_t mode;

	nlink_t nlink;

	kuid_t uid;

	kgid_t gid;

	loff_t size;

	const struct inode_operations *proc_iops;

	const struct file_operations *proc_fops;

	struct proc_dir_entry *next, *parent, *subdir;

	void *data;

	atomic_t count;		/* use count */

	atomic_t in_use;	/* number of callers into module in progress; */

			/* negative -> it's going away RSN */

	struct completion *pde_unload_completion;

	struct list_head pde_openers;	/* who did ->open, but not ->release */

	spinlock_t pde_unload_lock; /* proc_fops checks and pde_users bumps */

	u8 namelen;

	char name[];

};



#ifdef CONFIG_MMU

#define VMALLOC_TOTAL (VMALLOC_END - VMALLOC_START)

extern void get_vmalloc_info(struct vmalloc_info *vmi);

#else



#define VMALLOC_TOTAL 0UL

#define get_vmalloc_info(vmi)			\

do {						\

	(vmi)->used = 0;			\

	(vmi)->largest_chunk = 0;		\

} while(0)

#endif



extern int proc_tid_stat(struct seq_file *m, struct pid_namespace *ns,

				struct pid *pid, struct task_struct *task);

extern int proc_tgid_stat(struct seq_file *m, struct pid_namespace *ns,

				struct pid *pid, struct task_struct *task);

extern int proc_pid_status(struct seq_file *m, struct pid_namespace *ns,

				struct pid *pid, struct task_struct *task);

extern int proc_pid_statm(struct seq_file *m, struct pid_namespace *ns,

				struct pid *pid, struct task_struct *task);

extern loff_t mem_lseek(struct file *file, loff_t offset, int orig);



extern const struct file_operations proc_tid_children_operations;

extern const struct file_operations proc_pid_maps_operations;

extern const struct file_operations proc_tid_maps_operations;

extern const struct file_operations proc_pid_numa_maps_operations;

extern const struct file_operations proc_tid_numa_maps_operations;

extern const struct file_operations proc_pid_smaps_operations;

extern const struct file_operations proc_tid_smaps_operations;

extern const struct file_operations proc_clear_refs_operations;

extern const struct file_operations proc_pagemap_operations;

extern const struct file_operations proc_net_operations;

extern const struct inode_operations proc_net_inode_operations;

extern const struct inode_operations proc_pid_link_inode_operations;

union proc_op {

	int (*proc_get_link)(struct dentry *, struct path *);

	int (*proc_read)(struct task_struct *task, char *page);

	int (*proc_show)(struct seq_file *m,

		struct pid_namespace *ns, struct pid *pid,

		struct task_struct *task);

};



struct proc_maps_private {

struct proc_inode {

	struct pid *pid;

	struct task_struct *task;

#ifdef CONFIG_MMU

	struct vm_area_struct *tail_vma;

#endif

#ifdef CONFIG_NUMA

	struct mempolicy *task_mempolicy;

#endif

	int fd;

	union proc_op op;

	struct proc_dir_entry *pde;

	struct ctl_table_header *sysctl;

	struct ctl_table *sysctl_entry;

	struct proc_ns ns;

	struct inode vfs_inode;

};



void proc_init_inodecache(void);



/*

 * General functions

 */
@@ -150,79 +135,142 @@ out: 
}



/*

 * base.c

 * Offset of the first process in the /proc root directory..

 */

extern int pid_delete_dentry(const struct dentry *);

#define FIRST_PROCESS_ENTRY 256



struct dentry *proc_lookup_de(struct proc_dir_entry *de, struct inode *ino,

		struct dentry *dentry);

int proc_readdir_de(struct proc_dir_entry *de, struct file *filp, void *dirent,

		filldir_t filldir);

/* Worst case buffer size needed for holding an integer. */

#define PROC_NUMBUF 13



struct pde_opener {

	struct file *file;

	struct list_head lh;

	int closing;

	struct completion *c;

};

/*

 * array.c

 */

extern const struct file_operations proc_tid_children_operations;



extern int proc_tid_stat(struct seq_file *, struct pid_namespace *,

			 struct pid *, struct task_struct *);

extern int proc_tgid_stat(struct seq_file *, struct pid_namespace *,

			  struct pid *, struct task_struct *);

extern int proc_pid_status(struct seq_file *, struct pid_namespace *,

			   struct pid *, struct task_struct *);

extern int proc_pid_statm(struct seq_file *, struct pid_namespace *,

			  struct pid *, struct task_struct *);



/*

 * base.c

 */

extern const struct dentry_operations pid_dentry_operations;

extern int pid_getattr(struct vfsmount *, struct dentry *, struct kstat *);

extern int proc_setattr(struct dentry *, struct iattr *);

extern struct inode *proc_pid_make_inode(struct super_block *, struct task_struct *);

extern int pid_revalidate(struct dentry *, unsigned int);

extern int pid_delete_dentry(const struct dentry *);

extern int proc_pid_readdir(struct file *, void *, filldir_t);

extern struct dentry *proc_pid_lookup(struct inode *, struct dentry *, unsigned int);

extern loff_t mem_lseek(struct file *, loff_t, int);



void proc_entry_rundown(struct proc_dir_entry *);

/* Lookups */

typedef struct dentry *instantiate_t(struct inode *, struct dentry *,

				     struct task_struct *, const void *);

extern int proc_fill_cache(struct file *, void *, filldir_t, const char *, int,

			   instantiate_t, struct task_struct *, const void *);



/*

 * generic.c

 */

extern spinlock_t proc_subdir_lock;



struct dentry *proc_pid_lookup(struct inode *dir, struct dentry * dentry, unsigned int);

int proc_pid_readdir(struct file * filp, void * dirent, filldir_t filldir);

unsigned long task_vsize(struct mm_struct *);

unsigned long task_statm(struct mm_struct *,

	unsigned long *, unsigned long *, unsigned long *, unsigned long *);

void task_mem(struct seq_file *, struct mm_struct *);

extern struct dentry *proc_lookup(struct inode *, struct dentry *, unsigned int);

extern struct dentry *proc_lookup_de(struct proc_dir_entry *, struct inode *,

				     struct dentry *);

extern int proc_readdir(struct file *, void *, filldir_t);

extern int proc_readdir_de(struct proc_dir_entry *, struct file *, void *, filldir_t);



static inline struct proc_dir_entry *pde_get(struct proc_dir_entry *pde)

{

	atomic_inc(&pde->count);

	return pde;

}

void pde_put(struct proc_dir_entry *pde);

extern void pde_put(struct proc_dir_entry *);



/*

 * inode.c

 */

struct pde_opener {

	struct file *file;

	struct list_head lh;

	int closing;

	struct completion *c;

};



extern const struct inode_operations proc_pid_link_inode_operations;



int proc_fill_super(struct super_block *);

struct inode *proc_get_inode(struct super_block *, struct proc_dir_entry *);

int proc_remount(struct super_block *sb, int *flags, char *data);

extern void proc_init_inodecache(void);

extern struct inode *proc_get_inode(struct super_block *, struct proc_dir_entry *);

extern int proc_fill_super(struct super_block *);

extern void proc_entry_rundown(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.

 * mmu.c

 */

int proc_readdir(struct file *, void *, filldir_t);

struct dentry *proc_lookup(struct inode *, struct dentry *, unsigned int);

struct vmalloc_info {

	unsigned long	used;

	unsigned long	largest_chunk;

};



#ifdef CONFIG_MMU

#define VMALLOC_TOTAL (VMALLOC_END - VMALLOC_START)

extern void get_vmalloc_info(struct vmalloc_info *);



#else

#define VMALLOC_TOTAL 0UL

static inline void get_vmalloc_info(struct vmalloc_info *vmi)

{

	vmi->used = 0;

	vmi->largest_chunk = 0;

}

#endif



/* Lookups */

typedef struct dentry *instantiate_t(struct inode *, struct dentry *,

				struct task_struct *, const void *);

int proc_fill_cache(struct file *filp, void *dirent, filldir_t filldir,

	const char *name, int len,

	instantiate_t instantiate, struct task_struct *task, const void *ptr);

int pid_revalidate(struct dentry *dentry, unsigned int flags);

struct inode *proc_pid_make_inode(struct super_block * sb, struct task_struct *task);

extern const struct dentry_operations pid_dentry_operations;

int pid_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat);

int proc_setattr(struct dentry *dentry, struct iattr *attr);

/*

 * proc_devtree.c

 */

#ifdef CONFIG_PROC_DEVICETREE

extern void proc_device_tree_init(void);

#endif



/*

 * proc_namespaces.c

 */

extern const struct inode_operations proc_ns_dir_inode_operations;

extern const struct file_operations proc_ns_dir_operations;



/*

 * proc_net.c

 */

extern const struct file_operations proc_net_operations;

extern const struct inode_operations proc_net_inode_operations;



#ifdef CONFIG_NET

extern int proc_net_init(void);

#else

static inline int proc_net_init(void) { return 0; }

#endif



/*

 * proc_self.c

 */

extern int proc_setup_self(struct super_block *);



/*

 * proc_devtree.c

 * proc_sysctl.c

 */

#ifdef CONFIG_PROC_DEVICETREE

extern void proc_device_tree_init(void);

#endif /* CONFIG_PROC_DEVICETREE */

#ifdef CONFIG_PROC_SYSCTL

extern int proc_sys_init(void);

extern void sysctl_head_put(struct ctl_table_header *);

#else

static inline void proc_sys_init(void) { }

static inline void sysctl_head_put(struct ctl_table_header *head) { }

#endif



/*

 * proc_tty.c
@@ -232,3 +280,40 @@ extern void proc_tty_init(void); 
#else

static inline void proc_tty_init(void) {}

#endif



/*

 * root.c

 */

extern struct proc_dir_entry proc_root;



extern void proc_self_init(void);

extern int proc_remount(struct super_block *, int *, char *);



/*

 * task_[no]mmu.c

 */

struct proc_maps_private {

	struct pid *pid;

	struct task_struct *task;

#ifdef CONFIG_MMU

	struct vm_area_struct *tail_vma;

#endif

#ifdef CONFIG_NUMA

	struct mempolicy *task_mempolicy;

#endif

};



extern const struct file_operations proc_pid_maps_operations;

extern const struct file_operations proc_tid_maps_operations;

extern const struct file_operations proc_pid_numa_maps_operations;

extern const struct file_operations proc_tid_numa_maps_operations;

extern const struct file_operations proc_pid_smaps_operations;

extern const struct file_operations proc_tid_smaps_operations;

extern const struct file_operations proc_clear_refs_operations;

extern const struct file_operations proc_pagemap_operations;



extern unsigned long task_vsize(struct mm_struct *);

extern unsigned long task_statm(struct mm_struct *,

				unsigned long *, unsigned long *,

				unsigned long *, unsigned long *);

extern void task_mem(struct seq_file *, struct mm_struct *);

fs/proc/kcore.c

+1 −0
Original line number Diff line number Diff line
@@ -28,6 +28,7 @@ 
#include <linux/ioport.h>

#include <linux/memory.h>

#include <asm/sections.h>

#include "internal.h"



#define CORE_STR "CORE"

include/linux/proc_fs.h

+33 −107
Original line number Diff line number Diff line 
#ifndef _LINUX_PROC_FS_H

#define _LINUX_PROC_FS_H



#include <linux/slab.h>

#include <linux/fs.h>

#include <linux/spinlock.h>

#include <linux/magic.h>

#include <linux/atomic.h>

#include <linux/proc_ns.h>



struct net;

struct completion;

struct mm_struct;



/*

 * The proc filesystem constants/structures

 */

#ifndef _LINUX_PROC_FS_H

#define _LINUX_PROC_FS_H



/*

 * Offset of the first process in the /proc root directory..

 */

#define FIRST_PROCESS_ENTRY 256



/* Worst case buffer size needed for holding an integer. */

#define PROC_NUMBUF 13



/*

 * 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).

 */

#include <linux/types.h>

#include <linux/fs.h>



struct proc_dir_entry {

	unsigned int low_ino;

	umode_t mode;

	nlink_t nlink;

	kuid_t uid;

	kgid_t gid;

	loff_t size;

	const struct inode_operations *proc_iops;

	const struct file_operations *proc_fops;

	struct proc_dir_entry *next, *parent, *subdir;

	void *data;

	atomic_t count;		/* use count */

	atomic_t in_use;	/* number of callers into module in progress; */

			/* negative -> it's going away RSN */

	struct completion *pde_unload_completion;

	struct list_head pde_openers;	/* who did ->open, but not ->release */

	spinlock_t pde_unload_lock; /* proc_fops checks and pde_users bumps */

	u8 namelen;

	char name[];

};

struct proc_dir_entry;



#ifdef CONFIG_PROC_FS



extern void proc_root_init(void);



void proc_flush_task(struct task_struct *task);



struct proc_dir_entry *proc_create_data(const char *name, umode_t mode,

				struct proc_dir_entry *parent,

				const struct file_operations *proc_fops,

				void *data);

extern void proc_remove(struct proc_dir_entry *);

extern void remove_proc_entry(const char *name, struct proc_dir_entry *parent);

extern int remove_proc_subtree(const char *name, struct proc_dir_entry *parent);

extern void proc_flush_task(struct task_struct *);



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_data(const char *, umode_t,

					      struct proc_dir_entry *, void *);

extern struct proc_dir_entry *proc_mkdir_mode(const char *name, umode_t mode,

			struct proc_dir_entry *parent);

extern struct proc_dir_entry *proc_mkdir_mode(const char *, umode_t,

					      struct proc_dir_entry *);

 

extern struct proc_dir_entry *proc_create_data(const char *, umode_t,

					       struct proc_dir_entry *,

					       const struct file_operations *,

					       void *);



static inline struct proc_dir_entry *proc_create(const char *name, umode_t mode,

	struct proc_dir_entry *parent, const struct file_operations *proc_fops)

static inline struct proc_dir_entry *proc_create(

	const char *name, umode_t mode, struct proc_dir_entry *parent,

	const struct file_operations *proc_fops)

{

	return proc_create_data(name, mode, parent, proc_fops, NULL);

}
@@ -89,23 +38,15 @@ extern void proc_set_size(struct proc_dir_entry *, loff_t); 
extern void proc_set_user(struct proc_dir_entry *, kuid_t, kgid_t);

extern void *PDE_DATA(const struct inode *);

extern void *proc_get_parent_data(const struct inode *);

#else



static inline void proc_flush_task(struct task_struct *task)

{

}

extern void proc_remove(struct proc_dir_entry *);

extern void remove_proc_entry(const char *, struct proc_dir_entry *);

extern int remove_proc_subtree(const char *, struct proc_dir_entry *);



#define proc_create(name, mode, parent, fops)  ({ (void)(mode), NULL; })

#else /* CONFIG_PROC_FS */



static inline struct proc_dir_entry *proc_create_data(const char *name,

	umode_t mode, struct proc_dir_entry *parent,

	const struct file_operations *proc_fops, void *data)

static inline void proc_flush_task(struct task_struct *task)

{

	return NULL;

}

static inline void proc_remove(struct proc_dir_entry *de) {}

#define remove_proc_entry(name, parent) do {} while (0)

#define remove_proc_subtree(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;}
@@ -115,34 +56,19 @@ static inline struct proc_dir_entry *proc_mkdir_data(const char *name, 
	umode_t mode, struct proc_dir_entry *parent, void *data) { return NULL; }

static inline struct proc_dir_entry *proc_mkdir_mode(const char *name,

	umode_t mode, struct proc_dir_entry *parent) { return NULL; }

#define proc_create(name, mode, parent, proc_fops) ({NULL;})

#define proc_create_data(name, mode, parent, proc_fops, data) ({NULL;})



static inline void proc_set_size(struct proc_dir_entry *de, loff_t size) {}

static inline void proc_set_user(struct proc_dir_entry *de, kuid_t uid, kgid_t gid) {}

static inline void *PDE_DATA(const struct inode *inode) {BUG(); return NULL;}

static inline void *proc_get_parent_data(const struct inode *inode) { BUG(); return NULL; }



#endif /* CONFIG_PROC_FS */



static inline void proc_remove(struct proc_dir_entry *de) {}

#define remove_proc_entry(name, parent) do {} while (0)

static inline int remove_proc_subtree(const char *name, struct proc_dir_entry *parent) { return 0; }



union proc_op {

	int (*proc_get_link)(struct dentry *, struct path *);

	int (*proc_read)(struct task_struct *task, char *page);

	int (*proc_show)(struct seq_file *m,

		struct pid_namespace *ns, struct pid *pid,

		struct task_struct *task);

};



struct ctl_table_header;

struct ctl_table;



struct proc_inode {

	struct pid *pid;

	int fd;

	union proc_op op;

	struct proc_dir_entry *pde;

	struct ctl_table_header *sysctl;

	struct ctl_table *sysctl_entry;

	struct proc_ns ns;

	struct inode vfs_inode;

};

#endif /* CONFIG_PROC_FS */



static inline struct proc_dir_entry *proc_net_mkdir(

	struct net *net, const char *name, struct proc_dir_entry *parent)