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Line 157... | Line 157... | ||
157 | { |
157 | { |
158 | return c | 0x20; |
158 | return c | 0x20; |
159 | } |
159 | } |
Line 160... | Line -... | ||
160 | - | ||
161 | - | ||
162 | //const char hex_asc[] = "0123456789abcdef"; |
- | |
163 | - | ||
164 | /** |
- | |
165 | * hex_to_bin - convert a hex digit to its real value |
- | |
166 | * @ch: ascii character represents hex digit |
- | |
167 | * |
- | |
168 | * hex_to_bin() converts one hex digit to its actual value or -1 in case of bad |
- | |
169 | * input. |
- | |
170 | */ |
- | |
171 | int hex_to_bin(char ch) |
- | |
172 | { |
- | |
173 | if ((ch >= '0') && (ch <= '9')) |
- | |
174 | return ch - '0'; |
- | |
175 | ch = tolower(ch); |
- | |
176 | if ((ch >= 'a') && (ch <= 'f')) |
- | |
177 | return ch - 'a' + 10; |
- | |
178 | return -1; |
- | |
179 | } |
- | |
180 | EXPORT_SYMBOL(hex_to_bin); |
- | |
181 | - | ||
182 | /** |
- | |
183 | * hex2bin - convert an ascii hexadecimal string to its binary representation |
- | |
184 | * @dst: binary result |
- | |
185 | * @src: ascii hexadecimal string |
- | |
186 | * @count: result length |
- | |
187 | * |
- | |
188 | * Return 0 on success, -1 in case of bad input. |
- | |
189 | */ |
- | |
190 | int hex2bin(u8 *dst, const char *src, size_t count) |
- | |
191 | { |
- | |
192 | while (count--) { |
- | |
193 | int hi = hex_to_bin(*src++); |
- | |
194 | int lo = hex_to_bin(*src++); |
- | |
195 | - | ||
196 | if ((hi < 0) || (lo < 0)) |
- | |
197 | return -1; |
- | |
198 | - | ||
199 | *dst++ = (hi << 4) | lo; |
- | |
200 | } |
- | |
201 | return 0; |
- | |
202 | } |
- | |
203 | EXPORT_SYMBOL(hex2bin); |
- | |
204 | - | ||
205 | /** |
- | |
206 | * hex_dump_to_buffer - convert a blob of data to "hex ASCII" in memory |
- | |
207 | * @buf: data blob to dump |
- | |
208 | * @len: number of bytes in the @buf |
- | |
209 | * @rowsize: number of bytes to print per line; must be 16 or 32 |
- | |
210 | * @groupsize: number of bytes to print at a time (1, 2, 4, 8; default = 1) |
- | |
211 | * @linebuf: where to put the converted data |
- | |
212 | * @linebuflen: total size of @linebuf, including space for terminating NUL |
- | |
213 | * @ascii: include ASCII after the hex output |
- | |
214 | * |
- | |
215 | * hex_dump_to_buffer() works on one "line" of output at a time, i.e., |
- | |
216 | * 16 or 32 bytes of input data converted to hex + ASCII output. |
- | |
217 | * |
- | |
218 | * Given a buffer of u8 data, hex_dump_to_buffer() converts the input data |
- | |
219 | * to a hex + ASCII dump at the supplied memory location. |
- | |
220 | * The converted output is always NUL-terminated. |
- | |
221 | * |
- | |
222 | * E.g.: |
- | |
223 | * hex_dump_to_buffer(frame->data, frame->len, 16, 1, |
- | |
224 | * linebuf, sizeof(linebuf), true); |
- | |
225 | * |
- | |
226 | * example output buffer: |
- | |
227 | * 40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f @ABCDEFGHIJKLMNO |
- | |
228 | */ |
- | |
229 | int hex_dump_to_buffer(const void *buf, size_t len, int rowsize, int groupsize, |
- | |
230 | char *linebuf, size_t linebuflen, bool ascii) |
- | |
231 | { |
- | |
232 | const u8 *ptr = buf; |
- | |
233 | int ngroups; |
- | |
234 | u8 ch; |
- | |
235 | int j, lx = 0; |
- | |
236 | int ascii_column; |
- | |
237 | int ret; |
- | |
238 | - | ||
239 | if (rowsize != 16 && rowsize != 32) |
- | |
240 | rowsize = 16; |
- | |
241 | - | ||
242 | if (len > rowsize) /* limit to one line at a time */ |
- | |
243 | len = rowsize; |
- | |
244 | if (!is_power_of_2(groupsize) || groupsize > 8) |
- | |
245 | groupsize = 1; |
- | |
246 | if ((len % groupsize) != 0) /* no mixed size output */ |
- | |
247 | groupsize = 1; |
- | |
248 | - | ||
249 | ngroups = len / groupsize; |
- | |
250 | ascii_column = rowsize * 2 + rowsize / groupsize + 1; |
- | |
251 | - | ||
252 | if (!linebuflen) |
- | |
253 | goto overflow1; |
- | |
254 | - | ||
255 | if (!len) |
- | |
256 | goto nil; |
- | |
257 | - | ||
258 | if (groupsize == 8) { |
- | |
259 | const u64 *ptr8 = buf; |
- | |
260 | - | ||
261 | for (j = 0; j < ngroups; j++) { |
- | |
262 | ret = snprintf(linebuf + lx, linebuflen - lx, |
- | |
263 | "%s%16.16llx", j ? " " : "", |
- | |
264 | (unsigned long long)*(ptr8 + j)); |
- | |
265 | if (ret >= linebuflen - lx) |
- | |
266 | goto overflow1; |
- | |
267 | lx += ret; |
- | |
268 | } |
- | |
269 | } else if (groupsize == 4) { |
- | |
270 | const u32 *ptr4 = buf; |
- | |
271 | - | ||
272 | for (j = 0; j < ngroups; j++) { |
- | |
273 | ret = snprintf(linebuf + lx, linebuflen - lx, |
- | |
274 | "%s%8.8x", j ? " " : "", |
- | |
275 | *(ptr4 + j)); |
- | |
276 | if (ret >= linebuflen - lx) |
- | |
277 | goto overflow1; |
- | |
278 | lx += ret; |
- | |
279 | } |
- | |
280 | } else if (groupsize == 2) { |
- | |
281 | const u16 *ptr2 = buf; |
- | |
282 | - | ||
283 | for (j = 0; j < ngroups; j++) { |
- | |
284 | ret = snprintf(linebuf + lx, linebuflen - lx, |
- | |
285 | "%s%4.4x", j ? " " : "", |
- | |
286 | *(ptr2 + j)); |
- | |
287 | if (ret >= linebuflen - lx) |
- | |
288 | goto overflow1; |
- | |
289 | lx += ret; |
- | |
290 | } |
- | |
291 | } else { |
- | |
292 | for (j = 0; j < len; j++) { |
- | |
293 | if (linebuflen < lx + 3) |
- | |
294 | goto overflow2; |
- | |
295 | ch = ptr[j]; |
- | |
296 | linebuf[lx++] = hex_asc_hi(ch); |
- | |
297 | linebuf[lx++] = hex_asc_lo(ch); |
- | |
298 | linebuf[lx++] = ' '; |
- | |
299 | } |
- | |
300 | if (j) |
- | |
301 | lx--; |
- | |
302 | } |
- | |
303 | if (!ascii) |
- | |
304 | goto nil; |
- | |
305 | - | ||
306 | while (lx < ascii_column) { |
- | |
307 | if (linebuflen < lx + 2) |
- | |
308 | goto overflow2; |
- | |
309 | linebuf[lx++] = ' '; |
- | |
310 | } |
- | |
311 | for (j = 0; j < len; j++) { |
- | |
312 | if (linebuflen < lx + 2) |
- | |
313 | goto overflow2; |
- | |
314 | ch = ptr[j]; |
- | |
315 | linebuf[lx++] = (isascii(ch) && isprint(ch)) ? ch : '.'; |
- | |
316 | } |
- | |
317 | nil: |
- | |
318 | linebuf[lx] = '\0'; |
- | |
319 | return lx; |
- | |
320 | overflow2: |
- | |
321 | linebuf[lx++] = '\0'; |
- | |
322 | overflow1: |
- | |
323 | return ascii ? ascii_column + len : (groupsize * 2 + 1) * ngroups - 1; |
- | |
324 | } |
- | |
325 | /** |
- | |
326 | * print_hex_dump - print a text hex dump to syslog for a binary blob of data |
- | |
327 | * @level: kernel log level (e.g. KERN_DEBUG) |
- | |
328 | * @prefix_str: string to prefix each line with; |
- | |
329 | * caller supplies trailing spaces for alignment if desired |
- | |
330 | * @prefix_type: controls whether prefix of an offset, address, or none |
- | |
331 | * is printed (%DUMP_PREFIX_OFFSET, %DUMP_PREFIX_ADDRESS, %DUMP_PREFIX_NONE) |
- | |
332 | * @rowsize: number of bytes to print per line; must be 16 or 32 |
- | |
333 | * @groupsize: number of bytes to print at a time (1, 2, 4, 8; default = 1) |
- | |
334 | * @buf: data blob to dump |
- | |
335 | * @len: number of bytes in the @buf |
- | |
336 | * @ascii: include ASCII after the hex output |
- | |
337 | * |
- | |
338 | * Given a buffer of u8 data, print_hex_dump() prints a hex + ASCII dump |
- | |
339 | * to the kernel log at the specified kernel log level, with an optional |
- | |
340 | * leading prefix. |
- | |
341 | * |
- | |
342 | * print_hex_dump() works on one "line" of output at a time, i.e., |
- | |
343 | * 16 or 32 bytes of input data converted to hex + ASCII output. |
- | |
344 | * print_hex_dump() iterates over the entire input @buf, breaking it into |
- | |
345 | * "line size" chunks to format and print. |
- | |
346 | * |
- | |
347 | * E.g.: |
- | |
348 | * print_hex_dump(KERN_DEBUG, "raw data: ", DUMP_PREFIX_ADDRESS, |
- | |
349 | * 16, 1, frame->data, frame->len, true); |
- | |
350 | * |
- | |
351 | * Example output using %DUMP_PREFIX_OFFSET and 1-byte mode: |
- | |
352 | * 0009ab42: 40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f @ABCDEFGHIJKLMNO |
- | |
353 | * Example output using %DUMP_PREFIX_ADDRESS and 4-byte mode: |
- | |
354 | * ffffffff88089af0: 73727170 77767574 7b7a7978 7f7e7d7c pqrstuvwxyz{|}~. |
- | |
355 | */ |
- | |
356 | void print_hex_dump(const char *level, const char *prefix_str, int prefix_type, |
- | |
357 | int rowsize, int groupsize, |
- | |
358 | const void *buf, size_t len, bool ascii) |
- | |
359 | { |
- | |
360 | const u8 *ptr = buf; |
- | |
361 | int i, linelen, remaining = len; |
- | |
362 | unsigned char linebuf[32 * 3 + 2 + 32 + 1]; |
- | |
363 | - | ||
364 | if (rowsize != 16 && rowsize != 32) |
- | |
365 | rowsize = 16; |
- | |
366 | - | ||
367 | for (i = 0; i < len; i += rowsize) { |
- | |
368 | linelen = min(remaining, rowsize); |
- | |
369 | remaining -= rowsize; |
- | |
370 | - | ||
371 | hex_dump_to_buffer(ptr + i, linelen, rowsize, groupsize, |
- | |
372 | linebuf, sizeof(linebuf), ascii); |
- | |
373 | - | ||
374 | switch (prefix_type) { |
- | |
375 | case DUMP_PREFIX_ADDRESS: |
- | |
376 | printk("%s%s%p: %s\n", |
- | |
377 | level, prefix_str, ptr + i, linebuf); |
- | |
378 | break; |
- | |
379 | case DUMP_PREFIX_OFFSET: |
- | |
380 | printk("%s%s%.8x: %s\n", level, prefix_str, i, linebuf); |
- | |
381 | break; |
- | |
382 | default: |
- | |
383 | printk("%s%s%s\n", level, prefix_str, linebuf); |
- | |
384 | break; |
- | |
385 | } |
- | |
386 | } |
- | |
387 | } |
- | |
388 | - | ||
389 | void print_hex_dump_bytes(const char *prefix_str, int prefix_type, |
- | |
390 | const void *buf, size_t len) |
- | |
391 | { |
- | |
392 | print_hex_dump(KERN_DEBUG, prefix_str, prefix_type, 16, 1, |
- | |
Line 393... | Line 160... | ||
393 | buf, len, true); |
160 | |
Line 394... | Line 161... | ||
394 | } |
161 | |
395 | 162 | ||
Line 1117... | Line 884... | ||
1117 | b = r; |
884 | b = r; |
1118 | } |
885 | } |
1119 | return b; |
886 | return b; |
1120 | }>>>>>>30)); |
887 | } |
Line -... | Line 888... | ||
- | 888 | ||
- | 889 | void vfree(const void *addr) |
|
- | 890 | { |
|
- | 891 | KernelFree(addr); |
|
- | 892 | }>>>>>>30)); |