| #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 <asm/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, |
| }; |
| |
| /* |
| * 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; |
| unsigned int namelen; |
| const char *name; |
| mode_t mode; |
| nlink_t nlink; |
| uid_t uid; |
| gid_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 */ |
| spinlock_t pde_unload_lock; /* proc_fops checks and pde_users bumps */ |
| struct completion *pde_unload_completion; |
| struct list_head pde_openers; /* who did ->open, but not ->release */ |
| }; |
| |
| 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, mode_t mode, |
| struct proc_dir_entry *parent); |
| struct proc_dir_entry *proc_create_data(const char *name, mode_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; |
| 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 |
| */ |
| #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, mode_t mode, |
| struct proc_dir_entry *parent); |
| |
| static inline struct proc_dir_entry *proc_create(const char *name, mode_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, |
| 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 struct proc_dir_entry *proc_net_fops_create(struct net *net, |
| const char *name, mode_t mode, const struct file_operations *fops); |
| extern void proc_net_remove(struct net *net, const char *name); |
| extern struct proc_dir_entry *proc_net_mkdir(struct net *net, const char *name, |
| struct proc_dir_entry *parent); |
| |
| /* While the {get|set|dup}_mm_exe_file functions are for mm_structs, they are |
| * only needed to implement /proc/<pid>|self/exe so we define them here. */ |
| extern void set_mm_exe_file(struct mm_struct *mm, struct file *new_exe_file); |
| extern struct file *get_mm_exe_file(struct mm_struct *mm); |
| extern void dup_mm_exe_file(struct mm_struct *oldmm, struct mm_struct *newmm); |
| |
| #else |
| |
| #define proc_net_fops_create(net, name, mode, fops) ({ (void)(mode), NULL; }) |
| static inline void proc_net_remove(struct net *net, const char *name) {} |
| |
| static inline void proc_flush_task(struct task_struct *task) |
| { |
| } |
| |
| static inline struct proc_dir_entry *create_proc_entry(const char *name, |
| mode_t mode, struct proc_dir_entry *parent) { return NULL; } |
| static inline struct proc_dir_entry *proc_create(const char *name, |
| mode_t mode, struct proc_dir_entry *parent, |
| const struct file_operations *proc_fops) |
| { |
| return NULL; |
| } |
| static inline struct proc_dir_entry *proc_create_data(const char *name, |
| mode_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, |
| mode_t mode, 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; } |
| |
| 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 void set_mm_exe_file(struct mm_struct *mm, |
| struct file *new_exe_file) |
| {} |
| |
| static inline struct file *get_mm_exe_file(struct mm_struct *mm) |
| { |
| return NULL; |
| } |
| |
| static inline void dup_mm_exe_file(struct mm_struct *oldmm, |
| struct mm_struct *newmm) |
| {} |
| |
| #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 |
| |
| union proc_op { |
| int (*proc_get_link)(struct inode *, 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 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; |
| } |
| |
| struct proc_maps_private { |
| struct pid *pid; |
| struct task_struct *task; |
| #ifdef CONFIG_MMU |
| struct vm_area_struct *tail_vma; |
| #endif |
| }; |
| |
| #endif /* _LINUX_PROC_FS_H */ |