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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 | #ifndef _LINUX_PROC_FS_H #define _LINUX_PROC_FS_H #include <linux/config.h> #include <linux/slab.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, }; /* Finally, the dynamically allocatable proc entries are reserved: */ #define PROC_DYNAMIC_FIRST 4096 #define PROC_NDYNAMIC 4096 #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 *buffer, unsigned long count, void *data); typedef int (get_info_t)(char *, char **, off_t, int); struct proc_dir_entry { unsigned short 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 */ kdev_t rdev; }; #define PROC_INODE_PROPER(inode) ((inode)->i_ino & ~0xffff) #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_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 dentry *proc_pid_lookup(struct inode *dir, struct dentry * dentry); void proc_pid_delete_inode(struct inode *inode); int proc_pid_readdir(struct file * filp, void * dirent, filldir_t filldir); 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 struct super_block *proc_read_super(struct super_block *,void *,int); extern struct inode * proc_get_inode(struct super_block *, 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 *); 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 */ extern void proc_device_tree_init(void); /* * proc_rtas.c */ extern void proc_rtas_init(void); extern struct proc_dir_entry *proc_symlink(const char *, struct proc_dir_entry *, const char *); extern struct proc_dir_entry *proc_mknod(const char *,mode_t, struct proc_dir_entry *,kdev_t); extern struct proc_dir_entry *proc_mkdir(const char *,struct proc_dir_entry *); 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 void proc_net_remove(const char *name) { remove_proc_entry(name,proc_net); } #else #define proc_root_driver NULL static inline struct proc_dir_entry *proc_net_create(const char *name, mode_t mode, get_info_t *get_info) {return NULL;} static inline void proc_net_remove(const char *name) {} static inline struct proc_dir_entry *create_proc_entry(const char *name, mode_t mode, struct proc_dir_entry *parent) { return NULL; } static inline void remove_proc_entry(const char *name, struct proc_dir_entry *parent) {}; static inline struct proc_dir_entry *proc_symlink(const char *name, struct proc_dir_entry *parent,char *dest) {return NULL;} static inline struct proc_dir_entry *proc_mknod(const char *name,mode_t mode, struct proc_dir_entry *parent,kdev_t rdev) {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, int (*read_proc)(char *, char **, off_t, int, int *, void *), 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; } 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 */ #endif /* _LINUX_PROC_FS_H */ |