317 lines
8.4 KiB
C
317 lines
8.4 KiB
C
#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>
|
|
|
|
struct net;
|
|
struct completion;
|
|
struct mm_struct;
|
|
|
|
/*
|
|
* The proc filesystem constants/structures
|
|
*/
|
|
|
|
/*
|
|
* 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
|
|
|
|
/*
|
|
* We always define these enumerators
|
|
*/
|
|
|
|
enum {
|
|
PROC_ROOT_INO = 1,
|
|
PROC_IPC_INIT_INO = 0xEFFFFFFFU,
|
|
PROC_UTS_INIT_INO = 0xEFFFFFFEU,
|
|
PROC_USER_INIT_INO = 0xEFFFFFFDU,
|
|
PROC_PID_INIT_INO = 0xEFFFFFFCU,
|
|
};
|
|
|
|
/*
|
|
* 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).
|
|
*/
|
|
|
|
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);
|
|
|
|
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;
|
|
/*
|
|
* NULL ->proc_fops means "PDE is going away RSN" or
|
|
* "PDE is just created". In either case, e.g. ->read_proc won't be
|
|
* called because it's too late or too early, respectively.
|
|
*
|
|
* If you're allocating ->proc_fops dynamically, save a pointer
|
|
* somewhere.
|
|
*/
|
|
const struct file_operations *proc_fops;
|
|
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 pde_users; /* number of callers into module in progress */
|
|
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[];
|
|
};
|
|
|
|
enum kcore_type {
|
|
KCORE_TEXT,
|
|
KCORE_VMALLOC,
|
|
KCORE_RAM,
|
|
KCORE_VMEMMAP,
|
|
KCORE_OTHER,
|
|
};
|
|
|
|
struct kcore_list {
|
|
struct list_head list;
|
|
unsigned long addr;
|
|
size_t size;
|
|
int type;
|
|
};
|
|
|
|
struct vmcore {
|
|
struct list_head list;
|
|
unsigned long long paddr;
|
|
unsigned long long size;
|
|
loff_t offset;
|
|
};
|
|
|
|
#ifdef CONFIG_PROC_FS
|
|
|
|
extern void proc_root_init(void);
|
|
|
|
void proc_flush_task(struct task_struct *task);
|
|
|
|
extern struct proc_dir_entry *create_proc_entry(const char *name, umode_t mode,
|
|
struct proc_dir_entry *parent);
|
|
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 remove_proc_entry(const char *name, struct proc_dir_entry *parent);
|
|
|
|
struct pid_namespace;
|
|
|
|
extern int pid_ns_prepare_proc(struct pid_namespace *ns);
|
|
extern void pid_ns_release_proc(struct pid_namespace *ns);
|
|
|
|
/*
|
|
* proc_tty.c
|
|
*/
|
|
struct tty_driver;
|
|
#ifdef CONFIG_TTY
|
|
extern void proc_tty_init(void);
|
|
#else
|
|
static inline void proc_tty_init(void)
|
|
{ }
|
|
#endif
|
|
extern void proc_tty_register_driver(struct tty_driver *driver);
|
|
extern void proc_tty_unregister_driver(struct tty_driver *driver);
|
|
|
|
/*
|
|
* proc_devtree.c
|
|
*/
|
|
#ifdef CONFIG_PROC_DEVICETREE
|
|
struct device_node;
|
|
struct property;
|
|
extern void proc_device_tree_init(void);
|
|
extern void proc_device_tree_add_node(struct device_node *, struct proc_dir_entry *);
|
|
extern void proc_device_tree_add_prop(struct proc_dir_entry *pde, struct property *prop);
|
|
extern void proc_device_tree_remove_prop(struct proc_dir_entry *pde,
|
|
struct property *prop);
|
|
extern void proc_device_tree_update_prop(struct proc_dir_entry *pde,
|
|
struct property *newprop,
|
|
struct property *oldprop);
|
|
#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, umode_t mode,
|
|
struct proc_dir_entry *parent);
|
|
|
|
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);
|
|
}
|
|
|
|
static inline struct proc_dir_entry *create_proc_read_entry(const char *name,
|
|
umode_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 struct proc_dir_entry *proc_net_mkdir(struct net *net, const char *name,
|
|
struct proc_dir_entry *parent);
|
|
|
|
extern struct file *proc_ns_fget(int fd);
|
|
extern bool proc_ns_inode(struct inode *inode);
|
|
|
|
extern int proc_alloc_inum(unsigned int *pino);
|
|
extern void proc_free_inum(unsigned int inum);
|
|
#else
|
|
|
|
static inline void proc_flush_task(struct task_struct *task)
|
|
{
|
|
}
|
|
|
|
static inline struct proc_dir_entry *create_proc_entry(const char *name,
|
|
umode_t mode, struct proc_dir_entry *parent) { return NULL; }
|
|
|
|
#define proc_create(name, mode, parent, fops) ({ (void)(mode), NULL; })
|
|
|
|
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)
|
|
{
|
|
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 *proc_mkdir_mode(const char *name,
|
|
umode_t mode, struct proc_dir_entry *parent) { return NULL; }
|
|
|
|
static inline struct proc_dir_entry *create_proc_read_entry(const char *name,
|
|
umode_t mode, struct proc_dir_entry *base,
|
|
read_proc_t *read_proc, void * data) { 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) {};
|
|
|
|
static inline int pid_ns_prepare_proc(struct pid_namespace *ns)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void pid_ns_release_proc(struct pid_namespace *ns)
|
|
{
|
|
}
|
|
|
|
static inline struct file *proc_ns_fget(int fd)
|
|
{
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
static inline bool proc_ns_inode(struct inode *inode)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
static inline int proc_alloc_inum(unsigned int *inum)
|
|
{
|
|
*inum = 1;
|
|
return 0;
|
|
}
|
|
static inline void proc_free_inum(unsigned int inum)
|
|
{
|
|
}
|
|
#endif /* CONFIG_PROC_FS */
|
|
|
|
#if !defined(CONFIG_PROC_KCORE)
|
|
static inline void
|
|
kclist_add(struct kcore_list *new, void *addr, size_t size, int type)
|
|
{
|
|
}
|
|
#else
|
|
extern void kclist_add(struct kcore_list *, void *, size_t, int type);
|
|
#endif
|
|
|
|
struct nsproxy;
|
|
struct proc_ns_operations {
|
|
const char *name;
|
|
int type;
|
|
void *(*get)(struct task_struct *task);
|
|
void (*put)(void *ns);
|
|
int (*install)(struct nsproxy *nsproxy, void *ns);
|
|
unsigned int (*inum)(void *ns);
|
|
};
|
|
extern const struct proc_ns_operations netns_operations;
|
|
extern const struct proc_ns_operations utsns_operations;
|
|
extern const struct proc_ns_operations ipcns_operations;
|
|
extern const struct proc_ns_operations pidns_operations;
|
|
extern const struct proc_ns_operations userns_operations;
|
|
extern const struct proc_ns_operations mntns_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 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;
|
|
void *ns;
|
|
const struct proc_ns_operations *ns_ops;
|
|
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;
|
|
}
|
|
|
|
static inline struct net *PDE_NET(struct proc_dir_entry *pde)
|
|
{
|
|
return pde->parent->data;
|
|
}
|
|
|
|
#include <linux/signal.h>
|
|
|
|
void render_sigset_t(struct seq_file *m, const char *header, sigset_t *set);
|
|
#endif /* _LINUX_PROC_FS_H */
|