include/linux/proc_fs.h

   1 /*
   2  * The proc filesystem constants/structures
   3  */
   4 #ifndef _LINUX_PROC_FS_H
   5 #define _LINUX_PROC_FS_H
   6
   7 #include <linux/types.h>
   8 #include <linux/fs.h>
   9
  10 struct proc_dir_entry;
  11
  12 #ifdef CONFIG_PROC_FS
  13
  14 extern void proc_root_init(void);
  15 extern void proc_flush_task(struct task_struct *);
  16
  17 extern struct proc_dir_entry *proc_symlink(const char *,
  18                 struct proc_dir_entry *, const char *);
  19 extern struct proc_dir_entry *proc_mkdir(const char *, struct proc_dir_entry *);
  20 extern struct proc_dir_entry *proc_mkdir_data(const char *, umode_t,
  21                                               struct proc_dir_entry *, void *);
  22 extern struct proc_dir_entry *proc_mkdir_mode(const char *, umode_t,
  23                                               struct proc_dir_entry *);
  24 struct proc_dir_entry *proc_create_mount_point(const char *name);
  25
  26 extern struct proc_dir_entry *proc_create_data(const char *, umode_t,
  27                                                struct proc_dir_entry *,
  28                                                const struct file_operations *,
  29                                                void *);
  30
  31 static inline struct proc_dir_entry *proc_create(
  32         const char *name, umode_t mode, struct proc_dir_entry *parent,
  33         const struct file_operations *proc_fops)
  34 {
  35         return proc_create_data(name, mode, parent, proc_fops, NULL);
  36 }
  37
  38 extern void proc_set_size(struct proc_dir_entry *, loff_t);
  39 extern void proc_set_user(struct proc_dir_entry *, kuid_t, kgid_t);
  40 extern void *PDE_DATA(const struct inode *);
  41 extern void *proc_get_parent_data(const struct inode *);
  42 extern void proc_remove(struct proc_dir_entry *);
  43 extern void remove_proc_entry(const char *, struct proc_dir_entry *);
  44 extern int remove_proc_subtree(const char *, struct proc_dir_entry *);
  45
  46 #else /* CONFIG_PROC_FS */
  47
  48 static inline void proc_root_init(void)
  49 {
  50 }
  51
  52 static inline void proc_flush_task(struct task_struct *task)
  53 {
  54 }
  55
  56 static inline struct proc_dir_entry *proc_symlink(const char *name,
  57                 struct proc_dir_entry *parent,const char *dest) { return NULL;}
  58 static inline struct proc_dir_entry *proc_mkdir(const char *name,
  59         struct proc_dir_entry *parent) {return NULL;}
  60 static inline struct proc_dir_entry *proc_create_mount_point(const char *name) { return NULL; }
  61 static inline struct proc_dir_entry *proc_mkdir_data(const char *name,
  62         umode_t mode, struct proc_dir_entry *parent, void *data) { return NULL; }
  63 static inline struct proc_dir_entry *proc_mkdir_mode(const char *name,
  64         umode_t mode, struct proc_dir_entry *parent) { return NULL; }
  65 #define proc_create(name, mode, parent, proc_fops) ({NULL;})
  66 #define proc_create_data(name, mode, parent, proc_fops, data) ({NULL;})
  67
  68 static inline void proc_set_size(struct proc_dir_entry *de, loff_t size) {}
  69 static inline void proc_set_user(struct proc_dir_entry *de, kuid_t uid, kgid_t gid) {}
  70 static inline void *PDE_DATA(const struct inode *inode) {BUG(); return NULL;}
  71 static inline void *proc_get_parent_data(const struct inode *inode) { BUG(); return NULL; }
  72
  73 static inline void proc_remove(struct proc_dir_entry *de) {}
  74 #define remove_proc_entry(name, parent) do {} while (0)
  75 static inline int remove_proc_subtree(const char *name, struct proc_dir_entry *parent) { return 0; }
  76
  77 #endif /* CONFIG_PROC_FS */
  78
  79 struct net;
  80
  81 static inline struct proc_dir_entry *proc_net_mkdir(
  82         struct net *net, const char *name, struct proc_dir_entry *parent)
  83 {
  84         return proc_mkdir_data(name, 0, parent, net);
  85 }
  86
  87 struct ns_common;
  88 int open_related_ns(struct ns_common *ns,
  89                    struct ns_common *(*get_ns)(struct ns_common *ns));
  90
  91 #endif /* _LINUX_PROC_FS_H */