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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 | /* * debugfs.h - a tiny little debug file system * * Copyright (C) 2004 Greg Kroah-Hartman <greg@kroah.com> * Copyright (C) 2004 IBM Inc. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License version * 2 as published by the Free Software Foundation. * * debugfs is for people to use instead of /proc or /sys. * See Documentation/DocBook/filesystems for more details. */ #ifndef _DEBUGFS_H_ #define _DEBUGFS_H_ #include <linux/fs.h> #include <linux/seq_file.h> #include <linux/types.h> struct device; struct file_operations; struct debugfs_blob_wrapper { void *data; unsigned long size; }; struct debugfs_reg32 { char *name; unsigned long offset; }; struct debugfs_regset32 { const struct debugfs_reg32 *regs; int nregs; void __iomem *base; }; extern struct dentry *arch_debugfs_dir; #if defined(CONFIG_DEBUG_FS) /* declared over in file.c */ extern const struct file_operations debugfs_file_operations; struct dentry *debugfs_create_file(const char *name, umode_t mode, struct dentry *parent, void *data, const struct file_operations *fops); struct dentry *debugfs_create_file_size(const char *name, umode_t mode, struct dentry *parent, void *data, const struct file_operations *fops, loff_t file_size); struct dentry *debugfs_create_dir(const char *name, struct dentry *parent); struct dentry *debugfs_create_symlink(const char *name, struct dentry *parent, const char *dest); struct dentry *debugfs_create_automount(const char *name, struct dentry *parent, struct vfsmount *(*f)(void *), void *data); void debugfs_remove(struct dentry *dentry); void debugfs_remove_recursive(struct dentry *dentry); struct dentry *debugfs_rename(struct dentry *old_dir, struct dentry *old_dentry, struct dentry *new_dir, const char *new_name); struct dentry *debugfs_create_u8(const char *name, umode_t mode, struct dentry *parent, u8 *value); struct dentry *debugfs_create_u16(const char *name, umode_t mode, struct dentry *parent, u16 *value); struct dentry *debugfs_create_u32(const char *name, umode_t mode, struct dentry *parent, u32 *value); struct dentry *debugfs_create_u64(const char *name, umode_t mode, struct dentry *parent, u64 *value); struct dentry *debugfs_create_ulong(const char *name, umode_t mode, struct dentry *parent, unsigned long *value); struct dentry *debugfs_create_x8(const char *name, umode_t mode, struct dentry *parent, u8 *value); struct dentry *debugfs_create_x16(const char *name, umode_t mode, struct dentry *parent, u16 *value); struct dentry *debugfs_create_x32(const char *name, umode_t mode, struct dentry *parent, u32 *value); struct dentry *debugfs_create_x64(const char *name, umode_t mode, struct dentry *parent, u64 *value); struct dentry *debugfs_create_size_t(const char *name, umode_t mode, struct dentry *parent, size_t *value); struct dentry *debugfs_create_atomic_t(const char *name, umode_t mode, struct dentry *parent, atomic_t *value); struct dentry *debugfs_create_bool(const char *name, umode_t mode, struct dentry *parent, bool *value); struct dentry *debugfs_create_blob(const char *name, umode_t mode, struct dentry *parent, struct debugfs_blob_wrapper *blob); struct dentry *debugfs_create_regset32(const char *name, umode_t mode, struct dentry *parent, struct debugfs_regset32 *regset); void debugfs_print_regs32(struct seq_file *s, const struct debugfs_reg32 *regs, int nregs, void __iomem *base, char *prefix); struct dentry *debugfs_create_u32_array(const char *name, umode_t mode, struct dentry *parent, u32 *array, u32 elements); struct dentry *debugfs_create_devm_seqfile(struct device *dev, const char *name, struct dentry *parent, int (*read_fn)(struct seq_file *s, void *data)); bool debugfs_initialized(void); ssize_t debugfs_read_file_bool(struct file *file, char __user *user_buf, size_t count, loff_t *ppos); ssize_t debugfs_write_file_bool(struct file *file, const char __user *user_buf, size_t count, loff_t *ppos); #else #include <linux/err.h> /* * We do not return NULL from these functions if CONFIG_DEBUG_FS is not enabled * so users have a chance to detect if there was a real error or not. We don't * want to duplicate the design decision mistakes of procfs and devfs again. */ static inline struct dentry *debugfs_create_file(const char *name, umode_t mode, struct dentry *parent, void *data, const struct file_operations *fops) { return ERR_PTR(-ENODEV); } static inline struct dentry *debugfs_create_file_size(const char *name, umode_t mode, struct dentry *parent, void *data, const struct file_operations *fops, loff_t file_size) { return ERR_PTR(-ENODEV); } static inline struct dentry *debugfs_create_dir(const char *name, struct dentry *parent) { return ERR_PTR(-ENODEV); } static inline struct dentry *debugfs_create_symlink(const char *name, struct dentry *parent, const char *dest) { return ERR_PTR(-ENODEV); } static inline void debugfs_remove(struct dentry *dentry) { } static inline void debugfs_remove_recursive(struct dentry *dentry) { } static inline struct dentry *debugfs_rename(struct dentry *old_dir, struct dentry *old_dentry, struct dentry *new_dir, char *new_name) { return ERR_PTR(-ENODEV); } static inline struct dentry *debugfs_create_u8(const char *name, umode_t mode, struct dentry *parent, u8 *value) { return ERR_PTR(-ENODEV); } static inline struct dentry *debugfs_create_u16(const char *name, umode_t mode, struct dentry *parent, u16 *value) { return ERR_PTR(-ENODEV); } static inline struct dentry *debugfs_create_u32(const char *name, umode_t mode, struct dentry *parent, u32 *value) { return ERR_PTR(-ENODEV); } static inline struct dentry *debugfs_create_u64(const char *name, umode_t mode, struct dentry *parent, u64 *value) { return ERR_PTR(-ENODEV); } static inline struct dentry *debugfs_create_x8(const char *name, umode_t mode, struct dentry *parent, u8 *value) { return ERR_PTR(-ENODEV); } static inline struct dentry *debugfs_create_x16(const char *name, umode_t mode, struct dentry *parent, u16 *value) { return ERR_PTR(-ENODEV); } static inline struct dentry *debugfs_create_x32(const char *name, umode_t mode, struct dentry *parent, u32 *value) { return ERR_PTR(-ENODEV); } static inline struct dentry *debugfs_create_x64(const char *name, umode_t mode, struct dentry *parent, u64 *value) { return ERR_PTR(-ENODEV); } static inline struct dentry *debugfs_create_size_t(const char *name, umode_t mode, struct dentry *parent, size_t *value) { return ERR_PTR(-ENODEV); } static inline struct dentry *debugfs_create_atomic_t(const char *name, umode_t mode, struct dentry *parent, atomic_t *value) { return ERR_PTR(-ENODEV); } static inline struct dentry *debugfs_create_bool(const char *name, umode_t mode, struct dentry *parent, bool *value) { return ERR_PTR(-ENODEV); } static inline struct dentry *debugfs_create_blob(const char *name, umode_t mode, struct dentry *parent, struct debugfs_blob_wrapper *blob) { return ERR_PTR(-ENODEV); } static inline struct dentry *debugfs_create_regset32(const char *name, umode_t mode, struct dentry *parent, struct debugfs_regset32 *regset) { return ERR_PTR(-ENODEV); } static inline void debugfs_print_regs32(struct seq_file *s, const struct debugfs_reg32 *regs, int nregs, void __iomem *base, char *prefix) { } static inline bool debugfs_initialized(void) { return false; } static inline struct dentry *debugfs_create_u32_array(const char *name, umode_t mode, struct dentry *parent, u32 *array, u32 elements) { return ERR_PTR(-ENODEV); } static inline struct dentry *debugfs_create_devm_seqfile(struct device *dev, const char *name, struct dentry *parent, int (*read_fn)(struct seq_file *s, void *data)) { return ERR_PTR(-ENODEV); } static inline ssize_t debugfs_read_file_bool(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { return -ENODEV; } static inline ssize_t debugfs_write_file_bool(struct file *file, const char __user *user_buf, size_t count, loff_t *ppos) { return -ENODEV; } #endif #endif |