Blame view
lib/vsprintf.c
47 KB
1da177e4c Linux-2.6.12-rc2 |
1 2 3 4 5 6 7 8 9 10 |
/* * linux/lib/vsprintf.c * * Copyright (C) 1991, 1992 Linus Torvalds */ /* vsprintf.c -- Lars Wirzenius & Linus Torvalds. */ /* * Wirzenius wrote this portably, Torvalds fucked it up :-) */ |
7b9186f5e vsprintf: give it... |
11 |
/* |
1da177e4c Linux-2.6.12-rc2 |
12 13 14 15 16 17 18 19 20 21 22 23 |
* Fri Jul 13 2001 Crutcher Dunnavant <crutcher+kernel@datastacks.com> * - changed to provide snprintf and vsnprintf functions * So Feb 1 16:51:32 CET 2004 Juergen Quade <quade@hsnr.de> * - scnprintf and vscnprintf */ #include <stdarg.h> #include <linux/module.h> #include <linux/types.h> #include <linux/string.h> #include <linux/ctype.h> #include <linux/kernel.h> |
0fe1ef24f vsprintf: add sup... |
24 25 |
#include <linux/kallsyms.h> #include <linux/uaccess.h> |
332d2e783 Implement %pR to ... |
26 |
#include <linux/ioport.h> |
8a27f7c90 lib/vsprintf.c: A... |
27 |
#include <net/addrconf.h> |
1da177e4c Linux-2.6.12-rc2 |
28 |
|
4e57b6817 [PATCH] fix missi... |
29 |
#include <asm/page.h> /* for PAGE_SIZE */ |
1da177e4c Linux-2.6.12-rc2 |
30 |
#include <asm/div64.h> |
deac93df2 lib: Correct prin... |
31 |
#include <asm/sections.h> /* for dereference_function_descriptor() */ |
1da177e4c Linux-2.6.12-rc2 |
32 |
|
aa46a63ef lib: pull base-gu... |
33 34 35 |
static unsigned int simple_guess_base(const char *cp) { if (cp[0] == '0') { |
75fb8f269 lib: make _tolowe... |
36 |
if (_tolower(cp[1]) == 'x' && isxdigit(cp[2])) |
aa46a63ef lib: pull base-gu... |
37 38 39 40 41 42 43 |
return 16; else return 8; } else { return 10; } } |
1da177e4c Linux-2.6.12-rc2 |
44 |
/** |
922ac25c9 vsprintf: reuse a... |
45 |
* simple_strtoull - convert a string to an unsigned long long |
1da177e4c Linux-2.6.12-rc2 |
46 47 48 49 |
* @cp: The start of the string * @endp: A pointer to the end of the parsed string will be placed here * @base: The number base to use */ |
922ac25c9 vsprintf: reuse a... |
50 |
unsigned long long simple_strtoull(const char *cp, char **endp, unsigned int base) |
1da177e4c Linux-2.6.12-rc2 |
51 |
{ |
922ac25c9 vsprintf: reuse a... |
52 |
unsigned long long result = 0; |
aa46a63ef lib: pull base-gu... |
53 54 55 |
if (!base) base = simple_guess_base(cp); |
75fb8f269 lib: make _tolowe... |
56 |
if (base == 16 && cp[0] == '0' && _tolower(cp[1]) == 'x') |
aa46a63ef lib: pull base-gu... |
57 58 59 60 |
cp += 2; while (isxdigit(*cp)) { unsigned int value; |
75fb8f269 lib: make _tolowe... |
61 |
value = isdigit(*cp) ? *cp - '0' : _tolower(*cp) - 'a' + 10; |
aa46a63ef lib: pull base-gu... |
62 63 64 |
if (value >= base) break; result = result * base + value; |
1da177e4c Linux-2.6.12-rc2 |
65 66 67 68 |
cp++; } if (endp) *endp = (char *)cp; |
7b9186f5e vsprintf: give it... |
69 |
|
1da177e4c Linux-2.6.12-rc2 |
70 71 |
return result; } |
922ac25c9 vsprintf: reuse a... |
72 |
EXPORT_SYMBOL(simple_strtoull); |
1da177e4c Linux-2.6.12-rc2 |
73 74 |
/** |
922ac25c9 vsprintf: reuse a... |
75 |
* simple_strtoul - convert a string to an unsigned long |
1da177e4c Linux-2.6.12-rc2 |
76 77 78 79 |
* @cp: The start of the string * @endp: A pointer to the end of the parsed string will be placed here * @base: The number base to use */ |
922ac25c9 vsprintf: reuse a... |
80 |
unsigned long simple_strtoul(const char *cp, char **endp, unsigned int base) |
1da177e4c Linux-2.6.12-rc2 |
81 |
{ |
922ac25c9 vsprintf: reuse a... |
82 |
return simple_strtoull(cp, endp, base); |
1da177e4c Linux-2.6.12-rc2 |
83 |
} |
922ac25c9 vsprintf: reuse a... |
84 |
EXPORT_SYMBOL(simple_strtoul); |
1da177e4c Linux-2.6.12-rc2 |
85 86 |
/** |
922ac25c9 vsprintf: reuse a... |
87 |
* simple_strtol - convert a string to a signed long |
1da177e4c Linux-2.6.12-rc2 |
88 89 90 91 |
* @cp: The start of the string * @endp: A pointer to the end of the parsed string will be placed here * @base: The number base to use */ |
922ac25c9 vsprintf: reuse a... |
92 |
long simple_strtol(const char *cp, char **endp, unsigned int base) |
1da177e4c Linux-2.6.12-rc2 |
93 |
{ |
922ac25c9 vsprintf: reuse a... |
94 95 |
if (*cp == '-') return -simple_strtoul(cp + 1, endp, base); |
7b9186f5e vsprintf: give it... |
96 |
|
922ac25c9 vsprintf: reuse a... |
97 |
return simple_strtoul(cp, endp, base); |
1da177e4c Linux-2.6.12-rc2 |
98 |
} |
922ac25c9 vsprintf: reuse a... |
99 |
EXPORT_SYMBOL(simple_strtol); |
1da177e4c Linux-2.6.12-rc2 |
100 101 102 103 104 105 106 |
/** * simple_strtoll - convert a string to a signed long long * @cp: The start of the string * @endp: A pointer to the end of the parsed string will be placed here * @base: The number base to use */ |
22d27051b lib: trivial whit... |
107 |
long long simple_strtoll(const char *cp, char **endp, unsigned int base) |
1da177e4c Linux-2.6.12-rc2 |
108 |
{ |
7b9186f5e vsprintf: give it... |
109 |
if (*cp == '-') |
22d27051b lib: trivial whit... |
110 |
return -simple_strtoull(cp + 1, endp, base); |
7b9186f5e vsprintf: give it... |
111 |
|
22d27051b lib: trivial whit... |
112 |
return simple_strtoull(cp, endp, base); |
1da177e4c Linux-2.6.12-rc2 |
113 |
} |
98d5ce0d0 lib/vsprintf.c: a... |
114 |
EXPORT_SYMBOL(simple_strtoll); |
1da177e4c Linux-2.6.12-rc2 |
115 |
|
cf3b429b0 vsprintf.c: use n... |
116 117 |
static noinline_for_stack int skip_atoi(const char **s) |
1da177e4c Linux-2.6.12-rc2 |
118 |
{ |
7b9186f5e vsprintf: give it... |
119 |
int i = 0; |
1da177e4c Linux-2.6.12-rc2 |
120 121 122 |
while (isdigit(**s)) i = i*10 + *((*s)++) - '0'; |
7b9186f5e vsprintf: give it... |
123 |
|
1da177e4c Linux-2.6.12-rc2 |
124 125 |
return i; } |
4277eedd7 vsprintf.c: optim... |
126 127 128 129 130 131 132 133 134 135 |
/* Decimal conversion is by far the most typical, and is used * for /proc and /sys data. This directly impacts e.g. top performance * with many processes running. We optimize it for speed * using code from * http://www.cs.uiowa.edu/~jones/bcd/decimal.html * (with permission from the author, Douglas W. Jones). */ /* Formats correctly any integer in [0,99999]. * Outputs from one to five digits depending on input. * On i386 gcc 4.1.2 -O2: ~250 bytes of code. */ |
cf3b429b0 vsprintf.c: use n... |
136 137 |
static noinline_for_stack char *put_dec_trunc(char *buf, unsigned q) |
4277eedd7 vsprintf.c: optim... |
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 |
{ unsigned d3, d2, d1, d0; d1 = (q>>4) & 0xf; d2 = (q>>8) & 0xf; d3 = (q>>12); d0 = 6*(d3 + d2 + d1) + (q & 0xf); q = (d0 * 0xcd) >> 11; d0 = d0 - 10*q; *buf++ = d0 + '0'; /* least significant digit */ d1 = q + 9*d3 + 5*d2 + d1; if (d1 != 0) { q = (d1 * 0xcd) >> 11; d1 = d1 - 10*q; *buf++ = d1 + '0'; /* next digit */ d2 = q + 2*d2; if ((d2 != 0) || (d3 != 0)) { q = (d2 * 0xd) >> 7; d2 = d2 - 10*q; *buf++ = d2 + '0'; /* next digit */ d3 = q + 4*d3; if (d3 != 0) { q = (d3 * 0xcd) >> 11; d3 = d3 - 10*q; *buf++ = d3 + '0'; /* next digit */ if (q != 0) |
7b9186f5e vsprintf: give it... |
166 |
*buf++ = q + '0'; /* most sign. digit */ |
4277eedd7 vsprintf.c: optim... |
167 168 169 |
} } } |
7b9186f5e vsprintf: give it... |
170 |
|
4277eedd7 vsprintf.c: optim... |
171 172 173 |
return buf; } /* Same with if's removed. Always emits five digits */ |
cf3b429b0 vsprintf.c: use n... |
174 175 |
static noinline_for_stack char *put_dec_full(char *buf, unsigned q) |
4277eedd7 vsprintf.c: optim... |
176 177 178 179 180 181 182 |
{ /* BTW, if q is in [0,9999], 8-bit ints will be enough, */ /* but anyway, gcc produces better code with full-sized ints */ unsigned d3, d2, d1, d0; d1 = (q>>4) & 0xf; d2 = (q>>8) & 0xf; d3 = (q>>12); |
7b9186f5e vsprintf: give it... |
183 184 185 186 187 188 189 190 191 |
/* * Possible ways to approx. divide by 10 * gcc -O2 replaces multiply with shifts and adds * (x * 0xcd) >> 11: 11001101 - shorter code than * 0x67 (on i386) * (x * 0x67) >> 10: 1100111 * (x * 0x34) >> 9: 110100 - same * (x * 0x1a) >> 8: 11010 - same * (x * 0x0d) >> 7: 1101 - same, shortest code (on i386) */ |
4277eedd7 vsprintf.c: optim... |
192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 |
d0 = 6*(d3 + d2 + d1) + (q & 0xf); q = (d0 * 0xcd) >> 11; d0 = d0 - 10*q; *buf++ = d0 + '0'; d1 = q + 9*d3 + 5*d2 + d1; q = (d1 * 0xcd) >> 11; d1 = d1 - 10*q; *buf++ = d1 + '0'; d2 = q + 2*d2; q = (d2 * 0xd) >> 7; d2 = d2 - 10*q; *buf++ = d2 + '0'; d3 = q + 4*d3; q = (d3 * 0xcd) >> 11; /* - shorter code */ /* q = (d3 * 0x67) >> 10; - would also work */ d3 = d3 - 10*q; *buf++ = d3 + '0'; *buf++ = q + '0'; |
7b9186f5e vsprintf: give it... |
212 |
|
4277eedd7 vsprintf.c: optim... |
213 214 215 |
return buf; } /* No inlining helps gcc to use registers better */ |
cf3b429b0 vsprintf.c: use n... |
216 217 |
static noinline_for_stack char *put_dec(char *buf, unsigned long long num) |
4277eedd7 vsprintf.c: optim... |
218 219 220 221 222 223 224 225 226 |
{ while (1) { unsigned rem; if (num < 100000) return put_dec_trunc(buf, num); rem = do_div(num, 100000); buf = put_dec_full(buf, rem); } } |
1da177e4c Linux-2.6.12-rc2 |
227 228 229 230 231 |
#define ZEROPAD 1 /* pad with zero */ #define SIGN 2 /* unsigned/signed long */ #define PLUS 4 /* show plus */ #define SPACE 8 /* space if plus */ #define LEFT 16 /* left justified */ |
b89dc5d6b vsprintf: clarify... |
232 233 |
#define SMALL 32 /* use lowercase in hex (must be 32 == 0x20) */ #define SPECIAL 64 /* prefix hex with "0x", octal with "0" */ |
1da177e4c Linux-2.6.12-rc2 |
234 |
|
fef20d9c1 vsprintf: unify t... |
235 236 |
enum format_type { FORMAT_TYPE_NONE, /* Just a string part */ |
ed681a91a vsprintf: unify t... |
237 |
FORMAT_TYPE_WIDTH, |
fef20d9c1 vsprintf: unify t... |
238 239 240 241 242 243 244 245 246 |
FORMAT_TYPE_PRECISION, FORMAT_TYPE_CHAR, FORMAT_TYPE_STR, FORMAT_TYPE_PTR, FORMAT_TYPE_PERCENT_CHAR, FORMAT_TYPE_INVALID, FORMAT_TYPE_LONG_LONG, FORMAT_TYPE_ULONG, FORMAT_TYPE_LONG, |
a4e94ef0d printk: add suppo... |
247 248 |
FORMAT_TYPE_UBYTE, FORMAT_TYPE_BYTE, |
fef20d9c1 vsprintf: unify t... |
249 250 251 252 253 254 255 256 257 258 |
FORMAT_TYPE_USHORT, FORMAT_TYPE_SHORT, FORMAT_TYPE_UINT, FORMAT_TYPE_INT, FORMAT_TYPE_NRCHARS, FORMAT_TYPE_SIZE_T, FORMAT_TYPE_PTRDIFF }; struct printf_spec { |
4e310fda9 vsprintf: Change ... |
259 |
u8 type; /* format_type enum */ |
ef0658f3d vsprintf.c: Reduc... |
260 |
u8 flags; /* flags to number() */ |
4e310fda9 vsprintf: Change ... |
261 262 263 264 |
u8 base; /* number base, 8, 10 or 16 only */ u8 qualifier; /* number qualifier, one of 'hHlLtzZ' */ s16 field_width; /* width of output field */ s16 precision; /* # of digits/chars */ |
fef20d9c1 vsprintf: unify t... |
265 |
}; |
cf3b429b0 vsprintf.c: use n... |
266 267 268 |
static noinline_for_stack char *number(char *buf, char *end, unsigned long long num, struct printf_spec spec) |
1da177e4c Linux-2.6.12-rc2 |
269 |
{ |
9b706aee7 x86: trivial prin... |
270 271 272 273 274 275 |
/* we are called with base 8, 10 or 16, only, thus don't need "G..." */ static const char digits[16] = "0123456789ABCDEF"; /* "GHIJKLMNOPQRSTUVWXYZ"; */ char tmp[66]; char sign; char locase; |
fef20d9c1 vsprintf: unify t... |
276 |
int need_pfx = ((spec.flags & SPECIAL) && spec.base != 10); |
1da177e4c Linux-2.6.12-rc2 |
277 |
int i; |
9b706aee7 x86: trivial prin... |
278 279 |
/* locase = 0 or 0x20. ORing digits or letters with 'locase' * produces same digits or (maybe lowercased) letters */ |
fef20d9c1 vsprintf: unify t... |
280 281 282 |
locase = (spec.flags & SMALL); if (spec.flags & LEFT) spec.flags &= ~ZEROPAD; |
1da177e4c Linux-2.6.12-rc2 |
283 |
sign = 0; |
fef20d9c1 vsprintf: unify t... |
284 |
if (spec.flags & SIGN) { |
7b9186f5e vsprintf: give it... |
285 |
if ((signed long long)num < 0) { |
1da177e4c Linux-2.6.12-rc2 |
286 |
sign = '-'; |
7b9186f5e vsprintf: give it... |
287 |
num = -(signed long long)num; |
fef20d9c1 vsprintf: unify t... |
288 289 |
spec.field_width--; } else if (spec.flags & PLUS) { |
1da177e4c Linux-2.6.12-rc2 |
290 |
sign = '+'; |
fef20d9c1 vsprintf: unify t... |
291 292 |
spec.field_width--; } else if (spec.flags & SPACE) { |
1da177e4c Linux-2.6.12-rc2 |
293 |
sign = ' '; |
fef20d9c1 vsprintf: unify t... |
294 |
spec.field_width--; |
1da177e4c Linux-2.6.12-rc2 |
295 296 |
} } |
b39a73409 vsprintf.c: optim... |
297 |
if (need_pfx) { |
fef20d9c1 vsprintf: unify t... |
298 299 300 |
spec.field_width--; if (spec.base == 16) spec.field_width--; |
1da177e4c Linux-2.6.12-rc2 |
301 |
} |
b39a73409 vsprintf.c: optim... |
302 303 |
/* generate full string in tmp[], in reverse order */ |
1da177e4c Linux-2.6.12-rc2 |
304 305 |
i = 0; if (num == 0) |
b39a73409 vsprintf.c: optim... |
306 |
tmp[i++] = '0'; |
4277eedd7 vsprintf.c: optim... |
307 308 |
/* Generic code, for any base: else do { |
9b706aee7 x86: trivial prin... |
309 |
tmp[i++] = (digits[do_div(num,base)] | locase); |
4277eedd7 vsprintf.c: optim... |
310 311 |
} while (num != 0); */ |
fef20d9c1 vsprintf: unify t... |
312 313 |
else if (spec.base != 10) { /* 8 or 16 */ int mask = spec.base - 1; |
b39a73409 vsprintf.c: optim... |
314 |
int shift = 3; |
7b9186f5e vsprintf: give it... |
315 316 317 |
if (spec.base == 16) shift = 4; |
b39a73409 vsprintf.c: optim... |
318 |
do { |
9b706aee7 x86: trivial prin... |
319 |
tmp[i++] = (digits[((unsigned char)num) & mask] | locase); |
b39a73409 vsprintf.c: optim... |
320 321 |
num >>= shift; } while (num); |
4277eedd7 vsprintf.c: optim... |
322 323 324 |
} else { /* base 10 */ i = put_dec(tmp, num) - tmp; } |
b39a73409 vsprintf.c: optim... |
325 326 |
/* printing 100 using %2d gives "100", not "00" */ |
fef20d9c1 vsprintf: unify t... |
327 328 |
if (i > spec.precision) spec.precision = i; |
b39a73409 vsprintf.c: optim... |
329 |
/* leading space padding */ |
fef20d9c1 vsprintf: unify t... |
330 331 |
spec.field_width -= spec.precision; if (!(spec.flags & (ZEROPAD+LEFT))) { |
7b9186f5e vsprintf: give it... |
332 |
while (--spec.field_width >= 0) { |
f796937a0 [PATCH] Fix bound... |
333 |
if (buf < end) |
1da177e4c Linux-2.6.12-rc2 |
334 335 336 337 |
*buf = ' '; ++buf; } } |
b39a73409 vsprintf.c: optim... |
338 |
/* sign */ |
1da177e4c Linux-2.6.12-rc2 |
339 |
if (sign) { |
f796937a0 [PATCH] Fix bound... |
340 |
if (buf < end) |
1da177e4c Linux-2.6.12-rc2 |
341 342 343 |
*buf = sign; ++buf; } |
b39a73409 vsprintf.c: optim... |
344 345 346 347 348 |
/* "0x" / "0" prefix */ if (need_pfx) { if (buf < end) *buf = '0'; ++buf; |
fef20d9c1 vsprintf: unify t... |
349 |
if (spec.base == 16) { |
f796937a0 [PATCH] Fix bound... |
350 |
if (buf < end) |
9b706aee7 x86: trivial prin... |
351 |
*buf = ('X' | locase); |
1da177e4c Linux-2.6.12-rc2 |
352 353 354 |
++buf; } } |
b39a73409 vsprintf.c: optim... |
355 |
/* zero or space padding */ |
fef20d9c1 vsprintf: unify t... |
356 357 358 |
if (!(spec.flags & LEFT)) { char c = (spec.flags & ZEROPAD) ? '0' : ' '; while (--spec.field_width >= 0) { |
f796937a0 [PATCH] Fix bound... |
359 |
if (buf < end) |
1da177e4c Linux-2.6.12-rc2 |
360 361 362 363 |
*buf = c; ++buf; } } |
b39a73409 vsprintf.c: optim... |
364 |
/* hmm even more zero padding? */ |
fef20d9c1 vsprintf: unify t... |
365 |
while (i <= --spec.precision) { |
f796937a0 [PATCH] Fix bound... |
366 |
if (buf < end) |
1da177e4c Linux-2.6.12-rc2 |
367 368 369 |
*buf = '0'; ++buf; } |
b39a73409 vsprintf.c: optim... |
370 371 |
/* actual digits of result */ while (--i >= 0) { |
f796937a0 [PATCH] Fix bound... |
372 |
if (buf < end) |
1da177e4c Linux-2.6.12-rc2 |
373 374 375 |
*buf = tmp[i]; ++buf; } |
b39a73409 vsprintf.c: optim... |
376 |
/* trailing space padding */ |
fef20d9c1 vsprintf: unify t... |
377 |
while (--spec.field_width >= 0) { |
f796937a0 [PATCH] Fix bound... |
378 |
if (buf < end) |
1da177e4c Linux-2.6.12-rc2 |
379 380 381 |
*buf = ' '; ++buf; } |
7b9186f5e vsprintf: give it... |
382 |
|
1da177e4c Linux-2.6.12-rc2 |
383 384 |
return buf; } |
cf3b429b0 vsprintf.c: use n... |
385 386 |
static noinline_for_stack char *string(char *buf, char *end, const char *s, struct printf_spec spec) |
0f9bfa569 vsprintf: split o... |
387 388 389 390 |
{ int len, i; if ((unsigned long)s < PAGE_SIZE) |
0f4f81dce vsprintf: factori... |
391 |
s = "(null)"; |
0f9bfa569 vsprintf: split o... |
392 |
|
fef20d9c1 vsprintf: unify t... |
393 |
len = strnlen(s, spec.precision); |
0f9bfa569 vsprintf: split o... |
394 |
|
fef20d9c1 vsprintf: unify t... |
395 396 |
if (!(spec.flags & LEFT)) { while (len < spec.field_width--) { |
0f9bfa569 vsprintf: split o... |
397 398 399 400 401 402 403 404 405 406 |
if (buf < end) *buf = ' '; ++buf; } } for (i = 0; i < len; ++i) { if (buf < end) *buf = *s; ++buf; ++s; } |
fef20d9c1 vsprintf: unify t... |
407 |
while (len < spec.field_width--) { |
0f9bfa569 vsprintf: split o... |
408 409 410 411 |
if (buf < end) *buf = ' '; ++buf; } |
7b9186f5e vsprintf: give it... |
412 |
|
0f9bfa569 vsprintf: split o... |
413 414 |
return buf; } |
cf3b429b0 vsprintf.c: use n... |
415 416 417 |
static noinline_for_stack char *symbol_string(char *buf, char *end, void *ptr, struct printf_spec spec, char ext) |
0fe1ef24f vsprintf: add sup... |
418 419 420 421 |
{ unsigned long value = (unsigned long) ptr; #ifdef CONFIG_KALLSYMS char sym[KSYM_SYMBOL_LEN]; |
0f77a8d37 vsprintf: Introdu... |
422 423 424 |
if (ext == 'B') sprint_backtrace(sym, value); else if (ext != 'f' && ext != 's') |
0c8b946e3 vsprintf: introdu... |
425 426 427 |
sprint_symbol(sym, value); else kallsyms_lookup(value, NULL, NULL, NULL, sym); |
7b9186f5e vsprintf: give it... |
428 |
|
fef20d9c1 vsprintf: unify t... |
429 |
return string(buf, end, sym, spec); |
0fe1ef24f vsprintf: add sup... |
430 |
#else |
7b9186f5e vsprintf: give it... |
431 |
spec.field_width = 2 * sizeof(void *); |
fef20d9c1 vsprintf: unify t... |
432 433 |
spec.flags |= SPECIAL | SMALL | ZEROPAD; spec.base = 16; |
7b9186f5e vsprintf: give it... |
434 |
|
fef20d9c1 vsprintf: unify t... |
435 |
return number(buf, end, value, spec); |
0fe1ef24f vsprintf: add sup... |
436 437 |
#endif } |
cf3b429b0 vsprintf.c: use n... |
438 439 440 |
static noinline_for_stack char *resource_string(char *buf, char *end, struct resource *res, struct printf_spec spec, const char *fmt) |
332d2e783 Implement %pR to ... |
441 442 |
{ #ifndef IO_RSRC_PRINTK_SIZE |
284053722 vsprintf: fix io/... |
443 |
#define IO_RSRC_PRINTK_SIZE 6 |
332d2e783 Implement %pR to ... |
444 445 446 |
#endif #ifndef MEM_RSRC_PRINTK_SIZE |
284053722 vsprintf: fix io/... |
447 |
#define MEM_RSRC_PRINTK_SIZE 10 |
332d2e783 Implement %pR to ... |
448 |
#endif |
4da0b66c6 vsprintf: move %p... |
449 |
static const struct printf_spec io_spec = { |
fef20d9c1 vsprintf: unify t... |
450 |
.base = 16, |
4da0b66c6 vsprintf: move %p... |
451 |
.field_width = IO_RSRC_PRINTK_SIZE, |
fef20d9c1 vsprintf: unify t... |
452 453 454 |
.precision = -1, .flags = SPECIAL | SMALL | ZEROPAD, }; |
4da0b66c6 vsprintf: move %p... |
455 456 457 458 459 460 |
static const struct printf_spec mem_spec = { .base = 16, .field_width = MEM_RSRC_PRINTK_SIZE, .precision = -1, .flags = SPECIAL | SMALL | ZEROPAD, }; |
0f4050c7d resource: add bus... |
461 462 463 464 465 466 |
static const struct printf_spec bus_spec = { .base = 16, .field_width = 2, .precision = -1, .flags = SMALL | ZEROPAD, }; |
4da0b66c6 vsprintf: move %p... |
467 |
static const struct printf_spec dec_spec = { |
c91d3376e vsprintf: add %pR... |
468 469 470 471 |
.base = 10, .precision = -1, .flags = 0, }; |
4da0b66c6 vsprintf: move %p... |
472 |
static const struct printf_spec str_spec = { |
fd95541e2 vsprintf: add %pR... |
473 474 475 476 |
.field_width = -1, .precision = 10, .flags = LEFT, }; |
4da0b66c6 vsprintf: move %p... |
477 |
static const struct printf_spec flag_spec = { |
fd95541e2 vsprintf: add %pR... |
478 479 480 481 |
.base = 16, .precision = -1, .flags = SPECIAL | SMALL, }; |
c7dabef8a vsprintf: use %pR... |
482 483 484 485 486 |
/* 32-bit res (sizeof==4): 10 chars in dec, 10 in hex ("0x" + 8) * 64-bit res (sizeof==8): 20 chars in dec, 18 in hex ("0x" + 16) */ #define RSRC_BUF_SIZE ((2 * sizeof(resource_size_t)) + 4) #define FLAG_BUF_SIZE (2 * sizeof(res->flags)) |
9d7cca042 resource: add win... |
487 |
#define DECODED_BUF_SIZE sizeof("[mem - 64bit pref window disabled]") |
c7dabef8a vsprintf: use %pR... |
488 489 490 |
#define RAW_BUF_SIZE sizeof("[mem - flags 0x]") char sym[max(2*RSRC_BUF_SIZE + DECODED_BUF_SIZE, 2*RSRC_BUF_SIZE + FLAG_BUF_SIZE + RAW_BUF_SIZE)]; |
332d2e783 Implement %pR to ... |
491 |
char *p = sym, *pend = sym + sizeof(sym); |
c7dabef8a vsprintf: use %pR... |
492 |
int decode = (fmt[0] == 'R') ? 1 : 0; |
4da0b66c6 vsprintf: move %p... |
493 |
const struct printf_spec *specp; |
332d2e783 Implement %pR to ... |
494 495 |
*p++ = '['; |
4da0b66c6 vsprintf: move %p... |
496 |
if (res->flags & IORESOURCE_IO) { |
c7dabef8a vsprintf: use %pR... |
497 |
p = string(p, pend, "io ", str_spec); |
4da0b66c6 vsprintf: move %p... |
498 499 |
specp = &io_spec; } else if (res->flags & IORESOURCE_MEM) { |
c7dabef8a vsprintf: use %pR... |
500 |
p = string(p, pend, "mem ", str_spec); |
4da0b66c6 vsprintf: move %p... |
501 502 |
specp = &mem_spec; } else if (res->flags & IORESOURCE_IRQ) { |
c7dabef8a vsprintf: use %pR... |
503 |
p = string(p, pend, "irq ", str_spec); |
4da0b66c6 vsprintf: move %p... |
504 505 |
specp = &dec_spec; } else if (res->flags & IORESOURCE_DMA) { |
c7dabef8a vsprintf: use %pR... |
506 |
p = string(p, pend, "dma ", str_spec); |
4da0b66c6 vsprintf: move %p... |
507 |
specp = &dec_spec; |
0f4050c7d resource: add bus... |
508 509 510 |
} else if (res->flags & IORESOURCE_BUS) { p = string(p, pend, "bus ", str_spec); specp = &bus_spec; |
4da0b66c6 vsprintf: move %p... |
511 |
} else { |
c7dabef8a vsprintf: use %pR... |
512 |
p = string(p, pend, "??? ", str_spec); |
4da0b66c6 vsprintf: move %p... |
513 |
specp = &mem_spec; |
c7dabef8a vsprintf: use %pR... |
514 |
decode = 0; |
fd95541e2 vsprintf: add %pR... |
515 |
} |
4da0b66c6 vsprintf: move %p... |
516 |
p = number(p, pend, res->start, *specp); |
c91d3376e vsprintf: add %pR... |
517 518 |
if (res->start != res->end) { *p++ = '-'; |
4da0b66c6 vsprintf: move %p... |
519 |
p = number(p, pend, res->end, *specp); |
c91d3376e vsprintf: add %pR... |
520 |
} |
c7dabef8a vsprintf: use %pR... |
521 |
if (decode) { |
fd95541e2 vsprintf: add %pR... |
522 523 524 525 |
if (res->flags & IORESOURCE_MEM_64) p = string(p, pend, " 64bit", str_spec); if (res->flags & IORESOURCE_PREFETCH) p = string(p, pend, " pref", str_spec); |
9d7cca042 resource: add win... |
526 527 |
if (res->flags & IORESOURCE_WINDOW) p = string(p, pend, " window", str_spec); |
fd95541e2 vsprintf: add %pR... |
528 529 |
if (res->flags & IORESOURCE_DISABLED) p = string(p, pend, " disabled", str_spec); |
c7dabef8a vsprintf: use %pR... |
530 531 532 |
} else { p = string(p, pend, " flags ", str_spec); p = number(p, pend, res->flags, flag_spec); |
fd95541e2 vsprintf: add %pR... |
533 |
} |
332d2e783 Implement %pR to ... |
534 |
*p++ = ']'; |
c7dabef8a vsprintf: use %pR... |
535 |
*p = '\0'; |
332d2e783 Implement %pR to ... |
536 |
|
fef20d9c1 vsprintf: unify t... |
537 |
return string(buf, end, sym, spec); |
332d2e783 Implement %pR to ... |
538 |
} |
cf3b429b0 vsprintf.c: use n... |
539 540 541 |
static noinline_for_stack char *mac_address_string(char *buf, char *end, u8 *addr, struct printf_spec spec, const char *fmt) |
dd45c9cf6 printk: add %pM f... |
542 |
{ |
8a27f7c90 lib/vsprintf.c: A... |
543 |
char mac_addr[sizeof("xx:xx:xx:xx:xx:xx")]; |
dd45c9cf6 printk: add %pM f... |
544 545 |
char *p = mac_addr; int i; |
bc7259a2c lib/vsprintf.c: A... |
546 547 548 |
char separator; if (fmt[1] == 'F') { /* FDDI canonical format */ |
bc7259a2c lib/vsprintf.c: A... |
549 550 |
separator = '-'; } else { |
bc7259a2c lib/vsprintf.c: A... |
551 552 |
separator = ':'; } |
dd45c9cf6 printk: add %pM f... |
553 554 |
for (i = 0; i < 6; i++) { |
c8e000604 lib: Kill bit-rev... |
555 |
p = pack_hex_byte(p, addr[i]); |
8a27f7c90 lib/vsprintf.c: A... |
556 |
if (fmt[0] == 'M' && i != 5) |
bc7259a2c lib/vsprintf.c: A... |
557 |
*p++ = separator; |
dd45c9cf6 printk: add %pM f... |
558 559 |
} *p = '\0'; |
fef20d9c1 vsprintf: unify t... |
560 |
return string(buf, end, mac_addr, spec); |
dd45c9cf6 printk: add %pM f... |
561 |
} |
cf3b429b0 vsprintf.c: use n... |
562 563 |
static noinline_for_stack char *ip4_string(char *p, const u8 *addr, const char *fmt) |
8a27f7c90 lib/vsprintf.c: A... |
564 565 |
{ int i; |
0159f24ee lib/vsprintf.c: A... |
566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 |
bool leading_zeros = (fmt[0] == 'i'); int index; int step; switch (fmt[2]) { case 'h': #ifdef __BIG_ENDIAN index = 0; step = 1; #else index = 3; step = -1; #endif break; case 'l': index = 3; step = -1; break; case 'n': case 'b': default: index = 0; step = 1; break; } |
8a27f7c90 lib/vsprintf.c: A... |
591 592 |
for (i = 0; i < 4; i++) { char temp[3]; /* hold each IP quad in reverse order */ |
0159f24ee lib/vsprintf.c: A... |
593 |
int digits = put_dec_trunc(temp, addr[index]) - temp; |
8a27f7c90 lib/vsprintf.c: A... |
594 595 596 597 598 599 600 601 602 603 604 |
if (leading_zeros) { if (digits < 3) *p++ = '0'; if (digits < 2) *p++ = '0'; } /* reverse the digits in the quad */ while (digits--) *p++ = temp[digits]; if (i < 3) *p++ = '.'; |
0159f24ee lib/vsprintf.c: A... |
605 |
index += step; |
8a27f7c90 lib/vsprintf.c: A... |
606 |
} |
8a27f7c90 lib/vsprintf.c: A... |
607 |
*p = '\0'; |
7b9186f5e vsprintf: give it... |
608 |
|
8a27f7c90 lib/vsprintf.c: A... |
609 610 |
return p; } |
cf3b429b0 vsprintf.c: use n... |
611 612 |
static noinline_for_stack char *ip6_compressed_string(char *p, const char *addr) |
689afa7da printk: add %p6 f... |
613 |
{ |
7b9186f5e vsprintf: give it... |
614 |
int i, j, range; |
8a27f7c90 lib/vsprintf.c: A... |
615 616 617 618 |
unsigned char zerolength[8]; int longest = 1; int colonpos = -1; u16 word; |
7b9186f5e vsprintf: give it... |
619 |
u8 hi, lo; |
8a27f7c90 lib/vsprintf.c: A... |
620 |
bool needcolon = false; |
eb78cd26b lib/vsprintf.c: A... |
621 622 623 624 625 626 |
bool useIPv4; struct in6_addr in6; memcpy(&in6, addr, sizeof(struct in6_addr)); useIPv4 = ipv6_addr_v4mapped(&in6) || ipv6_addr_is_isatap(&in6); |
8a27f7c90 lib/vsprintf.c: A... |
627 628 629 630 631 632 633 634 635 636 637 |
memset(zerolength, 0, sizeof(zerolength)); if (useIPv4) range = 6; else range = 8; /* find position of longest 0 run */ for (i = 0; i < range; i++) { for (j = i; j < range; j++) { |
eb78cd26b lib/vsprintf.c: A... |
638 |
if (in6.s6_addr16[j] != 0) |
8a27f7c90 lib/vsprintf.c: A... |
639 640 641 642 643 644 645 646 647 648 |
break; zerolength[i]++; } } for (i = 0; i < range; i++) { if (zerolength[i] > longest) { longest = zerolength[i]; colonpos = i; } } |
29cf519ee vsprintf: Update ... |
649 650 |
if (longest == 1) /* don't compress a single 0 */ colonpos = -1; |
689afa7da printk: add %p6 f... |
651 |
|
8a27f7c90 lib/vsprintf.c: A... |
652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 |
/* emit address */ for (i = 0; i < range; i++) { if (i == colonpos) { if (needcolon || i == 0) *p++ = ':'; *p++ = ':'; needcolon = false; i += longest - 1; continue; } if (needcolon) { *p++ = ':'; needcolon = false; } /* hex u16 without leading 0s */ |
eb78cd26b lib/vsprintf.c: A... |
667 |
word = ntohs(in6.s6_addr16[i]); |
8a27f7c90 lib/vsprintf.c: A... |
668 669 670 671 672 673 674 |
hi = word >> 8; lo = word & 0xff; if (hi) { if (hi > 0x0f) p = pack_hex_byte(p, hi); else *p++ = hex_asc_lo(hi); |
b5ff992b0 vsprintf: reduce ... |
675 |
p = pack_hex_byte(p, lo); |
8a27f7c90 lib/vsprintf.c: A... |
676 |
} |
b5ff992b0 vsprintf: reduce ... |
677 |
else if (lo > 0x0f) |
8a27f7c90 lib/vsprintf.c: A... |
678 679 680 681 682 683 684 685 686 |
p = pack_hex_byte(p, lo); else *p++ = hex_asc_lo(lo); needcolon = true; } if (useIPv4) { if (needcolon) *p++ = ':'; |
0159f24ee lib/vsprintf.c: A... |
687 |
p = ip4_string(p, &in6.s6_addr[12], "I4"); |
8a27f7c90 lib/vsprintf.c: A... |
688 |
} |
8a27f7c90 lib/vsprintf.c: A... |
689 |
*p = '\0'; |
7b9186f5e vsprintf: give it... |
690 |
|
8a27f7c90 lib/vsprintf.c: A... |
691 692 |
return p; } |
cf3b429b0 vsprintf.c: use n... |
693 694 |
static noinline_for_stack char *ip6_string(char *p, const char *addr, const char *fmt) |
8a27f7c90 lib/vsprintf.c: A... |
695 696 |
{ int i; |
7b9186f5e vsprintf: give it... |
697 |
|
689afa7da printk: add %p6 f... |
698 |
for (i = 0; i < 8; i++) { |
eb78cd26b lib/vsprintf.c: A... |
699 700 |
p = pack_hex_byte(p, *addr++); p = pack_hex_byte(p, *addr++); |
8a27f7c90 lib/vsprintf.c: A... |
701 |
if (fmt[0] == 'I' && i != 7) |
689afa7da printk: add %p6 f... |
702 703 704 |
*p++ = ':'; } *p = '\0'; |
7b9186f5e vsprintf: give it... |
705 |
|
8a27f7c90 lib/vsprintf.c: A... |
706 707 |
return p; } |
cf3b429b0 vsprintf.c: use n... |
708 709 710 |
static noinline_for_stack char *ip6_addr_string(char *buf, char *end, const u8 *addr, struct printf_spec spec, const char *fmt) |
8a27f7c90 lib/vsprintf.c: A... |
711 712 713 714 |
{ char ip6_addr[sizeof("xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:255.255.255.255")]; if (fmt[0] == 'I' && fmt[2] == 'c') |
eb78cd26b lib/vsprintf.c: A... |
715 |
ip6_compressed_string(ip6_addr, addr); |
8a27f7c90 lib/vsprintf.c: A... |
716 |
else |
eb78cd26b lib/vsprintf.c: A... |
717 |
ip6_string(ip6_addr, addr, fmt); |
689afa7da printk: add %p6 f... |
718 |
|
fef20d9c1 vsprintf: unify t... |
719 |
return string(buf, end, ip6_addr, spec); |
689afa7da printk: add %p6 f... |
720 |
} |
cf3b429b0 vsprintf.c: use n... |
721 722 723 |
static noinline_for_stack char *ip4_addr_string(char *buf, char *end, const u8 *addr, struct printf_spec spec, const char *fmt) |
4aa996066 printk: add %I4, ... |
724 |
{ |
8a27f7c90 lib/vsprintf.c: A... |
725 |
char ip4_addr[sizeof("255.255.255.255")]; |
4aa996066 printk: add %I4, ... |
726 |
|
0159f24ee lib/vsprintf.c: A... |
727 |
ip4_string(ip4_addr, addr, fmt); |
4aa996066 printk: add %I4, ... |
728 |
|
fef20d9c1 vsprintf: unify t... |
729 |
return string(buf, end, ip4_addr, spec); |
4aa996066 printk: add %I4, ... |
730 |
} |
cf3b429b0 vsprintf.c: use n... |
731 732 733 |
static noinline_for_stack char *uuid_string(char *buf, char *end, const u8 *addr, struct printf_spec spec, const char *fmt) |
9ac6e44ee lib/vsprintf.c: a... |
734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 |
{ char uuid[sizeof("xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx")]; char *p = uuid; int i; static const u8 be[16] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15}; static const u8 le[16] = {3,2,1,0,5,4,7,6,8,9,10,11,12,13,14,15}; const u8 *index = be; bool uc = false; switch (*(++fmt)) { case 'L': uc = true; /* fall-through */ case 'l': index = le; break; case 'B': uc = true; break; } for (i = 0; i < 16; i++) { p = pack_hex_byte(p, addr[index[i]]); switch (i) { case 3: case 5: case 7: case 9: *p++ = '-'; break; } } *p = 0; if (uc) { p = uuid; do { *p = toupper(*p); } while (*(++p)); } return string(buf, end, uuid, spec); } |
411f05f12 vsprintf: Turn kp... |
777 |
int kptr_restrict __read_mostly; |
455cd5ab3 kptr_restrict for... |
778 |
|
4d8a743cd vsprintf: add inf... |
779 780 781 782 783 |
/* * Show a '%p' thing. A kernel extension is that the '%p' is followed * by an extra set of alphanumeric characters that are extended format * specifiers. * |
332d2e783 Implement %pR to ... |
784 785 |
* Right now we handle: * |
0c8b946e3 vsprintf: introdu... |
786 787 |
* - 'F' For symbolic function descriptor pointers with offset * - 'f' For simple symbolic function names without offset |
0efb4d207 vsnprintf: remove... |
788 789 |
* - 'S' For symbolic direct pointers with offset * - 's' For symbolic direct pointers without offset |
0f77a8d37 vsprintf: Introdu... |
790 |
* - 'B' For backtraced symbolic direct pointers with offset |
c7dabef8a vsprintf: use %pR... |
791 792 |
* - 'R' For decoded struct resource, e.g., [mem 0x0-0x1f 64bit pref] * - 'r' For raw struct resource, e.g., [mem 0x0-0x1f flags 0x201] |
dd45c9cf6 printk: add %pM f... |
793 794 |
* - 'M' For a 6-byte MAC address, it prints the address in the * usual colon-separated hex notation |
8a27f7c90 lib/vsprintf.c: A... |
795 |
* - 'm' For a 6-byte MAC address, it prints the hex address without colons |
bc7259a2c lib/vsprintf.c: A... |
796 |
* - 'MF' For a 6-byte MAC FDDI address, it prints the address |
c8e000604 lib: Kill bit-rev... |
797 |
* with a dash-separated hex notation |
8a27f7c90 lib/vsprintf.c: A... |
798 799 800 801 802 803 |
* - 'I' [46] for IPv4/IPv6 addresses printed in the usual way * IPv4 uses dot-separated decimal without leading 0's (1.2.3.4) * IPv6 uses colon separated network-order 16 bit hex with leading 0's * - 'i' [46] for 'raw' IPv4/IPv6 addresses * IPv6 omits the colons (01020304...0f) * IPv4 uses dot-separated decimal with leading 0's (010.123.045.006) |
0159f24ee lib/vsprintf.c: A... |
804 |
* - '[Ii]4[hnbl]' IPv4 addresses in host, network, big or little endian order |
8a27f7c90 lib/vsprintf.c: A... |
805 |
* - 'I6c' for IPv6 addresses printed as specified by |
29cf519ee vsprintf: Update ... |
806 |
* http://tools.ietf.org/html/rfc5952 |
9ac6e44ee lib/vsprintf.c: a... |
807 808 809 810 811 812 813 814 815 816 817 |
* - 'U' For a 16 byte UUID/GUID, it prints the UUID/GUID in the form * "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" * Options for %pU are: * b big endian lower case hex (default) * B big endian UPPER case hex * l little endian lower case hex * L little endian UPPER case hex * big endian output byte order is: * [0][1][2][3]-[4][5]-[6][7]-[8][9]-[10][11][12][13][14][15] * little endian output byte order is: * [3][2][1][0]-[5][4]-[7][6]-[8][9]-[10][11][12][13][14][15] |
7db6f5fb6 vsprintf: Recursi... |
818 819 820 821 822 |
* - 'V' For a struct va_format which contains a format string * and va_list *, * call vsnprintf(->format, *->va_list). * Implements a "recursive vsnprintf". * Do not use this feature without some mechanism to verify the * correctness of the format string and va_list arguments. |
455cd5ab3 kptr_restrict for... |
823 |
* - 'K' For a kernel pointer that should be hidden from unprivileged users |
9ac6e44ee lib/vsprintf.c: a... |
824 |
* |
332d2e783 Implement %pR to ... |
825 826 827 |
* Note: The difference between 'S' and 'F' is that on ia64 and ppc64 * function pointers are really function descriptors, which contain a * pointer to the real address. |
4d8a743cd vsprintf: add inf... |
828 |
*/ |
cf3b429b0 vsprintf.c: use n... |
829 830 831 |
static noinline_for_stack char *pointer(const char *fmt, char *buf, char *end, void *ptr, struct printf_spec spec) |
78a8bf69b vsprintf: split o... |
832 |
{ |
9f36e2c44 printk: use %pK f... |
833 |
if (!ptr && *fmt != 'K') { |
5e0579812 vsprintf.c: use d... |
834 835 836 837 838 839 |
/* * Print (null) with the same width as a pointer so it makes * tabular output look nice. */ if (spec.field_width == -1) spec.field_width = 2 * sizeof(void *); |
fef20d9c1 vsprintf: unify t... |
840 |
return string(buf, end, "(null)", spec); |
5e0579812 vsprintf.c: use d... |
841 |
} |
d97106ab5 Make %p print '(n... |
842 |
|
0fe1ef24f vsprintf: add sup... |
843 844 |
switch (*fmt) { case 'F': |
0c8b946e3 vsprintf: introdu... |
845 |
case 'f': |
0fe1ef24f vsprintf: add sup... |
846 847 848 |
ptr = dereference_function_descriptor(ptr); /* Fallthrough */ case 'S': |
9ac6e44ee lib/vsprintf.c: a... |
849 |
case 's': |
0f77a8d37 vsprintf: Introdu... |
850 |
case 'B': |
0c8b946e3 vsprintf: introdu... |
851 |
return symbol_string(buf, end, ptr, spec, *fmt); |
332d2e783 Implement %pR to ... |
852 |
case 'R': |
c7dabef8a vsprintf: use %pR... |
853 |
case 'r': |
fd95541e2 vsprintf: add %pR... |
854 |
return resource_string(buf, end, ptr, spec, fmt); |
8a27f7c90 lib/vsprintf.c: A... |
855 856 |
case 'M': /* Colon separated: 00:01:02:03:04:05 */ case 'm': /* Contiguous: 000102030405 */ |
bc7259a2c lib/vsprintf.c: A... |
857 |
/* [mM]F (FDDI, bit reversed) */ |
8a27f7c90 lib/vsprintf.c: A... |
858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 |
return mac_address_string(buf, end, ptr, spec, fmt); case 'I': /* Formatted IP supported * 4: 1.2.3.4 * 6: 0001:0203:...:0708 * 6c: 1::708 or 1::1.2.3.4 */ case 'i': /* Contiguous: * 4: 001.002.003.004 * 6: 000102...0f */ switch (fmt[1]) { case '6': return ip6_addr_string(buf, end, ptr, spec, fmt); case '4': return ip4_addr_string(buf, end, ptr, spec, fmt); } |
fef20d9c1 vsprintf: unify t... |
874 |
break; |
9ac6e44ee lib/vsprintf.c: a... |
875 876 |
case 'U': return uuid_string(buf, end, ptr, spec, fmt); |
7db6f5fb6 vsprintf: Recursi... |
877 |
case 'V': |
d9be9b90d lib/vsprintf.c: f... |
878 |
return buf + vsnprintf(buf, end > buf ? end - buf : 0, |
7db6f5fb6 vsprintf: Recursi... |
879 880 |
((struct va_format *)ptr)->fmt, *(((struct va_format *)ptr)->va)); |
455cd5ab3 kptr_restrict for... |
881 882 883 884 885 886 887 888 889 |
case 'K': /* * %pK cannot be used in IRQ context because its test * for CAP_SYSLOG would be meaningless. */ if (in_irq() || in_serving_softirq() || in_nmi()) { if (spec.field_width == -1) spec.field_width = 2 * sizeof(void *); return string(buf, end, "pK-error", spec); |
455cd5ab3 kptr_restrict for... |
890 |
} |
26297607e vsprintf: neaten ... |
891 892 893 894 895 |
if (!((kptr_restrict == 0) || (kptr_restrict == 1 && has_capability_noaudit(current, CAP_SYSLOG)))) ptr = NULL; break; |
fef20d9c1 vsprintf: unify t... |
896 897 898 |
} spec.flags |= SMALL; if (spec.field_width == -1) { |
5e0579812 vsprintf.c: use d... |
899 |
spec.field_width = 2 * sizeof(void *); |
fef20d9c1 vsprintf: unify t... |
900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 |
spec.flags |= ZEROPAD; } spec.base = 16; return number(buf, end, (unsigned long) ptr, spec); } /* * Helper function to decode printf style format. * Each call decode a token from the format and return the * number of characters read (or likely the delta where it wants * to go on the next call). * The decoded token is returned through the parameters * * 'h', 'l', or 'L' for integer fields * 'z' support added 23/7/1999 S.H. * 'z' changed to 'Z' --davidm 1/25/99 * 't' added for ptrdiff_t * * @fmt: the format string * @type of the token returned * @flags: various flags such as +, -, # tokens.. * @field_width: overwritten width * @base: base of the number (octal, hex, ...) * @precision: precision of a number * @qualifier: qualifier of a number (long, size_t, ...) */ |
cf3b429b0 vsprintf.c: use n... |
927 928 |
static noinline_for_stack int format_decode(const char *fmt, struct printf_spec *spec) |
fef20d9c1 vsprintf: unify t... |
929 930 |
{ const char *start = fmt; |
fef20d9c1 vsprintf: unify t... |
931 932 |
/* we finished early by reading the field width */ |
ed681a91a vsprintf: unify t... |
933 |
if (spec->type == FORMAT_TYPE_WIDTH) { |
fef20d9c1 vsprintf: unify t... |
934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 |
if (spec->field_width < 0) { spec->field_width = -spec->field_width; spec->flags |= LEFT; } spec->type = FORMAT_TYPE_NONE; goto precision; } /* we finished early by reading the precision */ if (spec->type == FORMAT_TYPE_PRECISION) { if (spec->precision < 0) spec->precision = 0; spec->type = FORMAT_TYPE_NONE; goto qualifier; } /* By default */ spec->type = FORMAT_TYPE_NONE; for (; *fmt ; ++fmt) { if (*fmt == '%') break; } /* Return the current non-format string */ if (fmt != start || !*fmt) return fmt - start; /* Process flags */ spec->flags = 0; while (1) { /* this also skips first '%' */ bool found = true; ++fmt; switch (*fmt) { case '-': spec->flags |= LEFT; break; case '+': spec->flags |= PLUS; break; case ' ': spec->flags |= SPACE; break; case '#': spec->flags |= SPECIAL; break; case '0': spec->flags |= ZEROPAD; break; default: found = false; } if (!found) break; } /* get field width */ spec->field_width = -1; if (isdigit(*fmt)) spec->field_width = skip_atoi(&fmt); else if (*fmt == '*') { /* it's the next argument */ |
ed681a91a vsprintf: unify t... |
991 |
spec->type = FORMAT_TYPE_WIDTH; |
fef20d9c1 vsprintf: unify t... |
992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 |
return ++fmt - start; } precision: /* get the precision */ spec->precision = -1; if (*fmt == '.') { ++fmt; if (isdigit(*fmt)) { spec->precision = skip_atoi(&fmt); if (spec->precision < 0) spec->precision = 0; } else if (*fmt == '*') { /* it's the next argument */ |
adf26f84a fix regression fr... |
1006 |
spec->type = FORMAT_TYPE_PRECISION; |
fef20d9c1 vsprintf: unify t... |
1007 1008 1009 1010 1011 1012 1013 |
return ++fmt - start; } } qualifier: /* get the conversion qualifier */ spec->qualifier = -1; |
75fb8f269 lib: make _tolowe... |
1014 1015 |
if (*fmt == 'h' || _tolower(*fmt) == 'l' || _tolower(*fmt) == 'z' || *fmt == 't') { |
a4e94ef0d printk: add suppo... |
1016 1017 1018 1019 1020 1021 1022 1023 1024 |
spec->qualifier = *fmt++; if (unlikely(spec->qualifier == *fmt)) { if (spec->qualifier == 'l') { spec->qualifier = 'L'; ++fmt; } else if (spec->qualifier == 'h') { spec->qualifier = 'H'; ++fmt; } |
fef20d9c1 vsprintf: unify t... |
1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 |
} } /* default base */ spec->base = 10; switch (*fmt) { case 'c': spec->type = FORMAT_TYPE_CHAR; return ++fmt - start; case 's': spec->type = FORMAT_TYPE_STR; return ++fmt - start; case 'p': spec->type = FORMAT_TYPE_PTR; return fmt - start; /* skip alnum */ case 'n': spec->type = FORMAT_TYPE_NRCHARS; return ++fmt - start; case '%': spec->type = FORMAT_TYPE_PERCENT_CHAR; return ++fmt - start; /* integer number formats - set up the flags and "break" */ case 'o': spec->base = 8; break; case 'x': spec->flags |= SMALL; case 'X': spec->base = 16; break; case 'd': case 'i': |
39e874f8a vsprintf: fix bug... |
1066 |
spec->flags |= SIGN; |
fef20d9c1 vsprintf: unify t... |
1067 |
case 'u': |
4aa996066 printk: add %I4, ... |
1068 |
break; |
fef20d9c1 vsprintf: unify t... |
1069 1070 1071 1072 |
default: spec->type = FORMAT_TYPE_INVALID; return fmt - start; |
0fe1ef24f vsprintf: add sup... |
1073 |
} |
fef20d9c1 vsprintf: unify t... |
1074 1075 1076 1077 |
if (spec->qualifier == 'L') spec->type = FORMAT_TYPE_LONG_LONG; else if (spec->qualifier == 'l') { |
39e874f8a vsprintf: fix bug... |
1078 |
if (spec->flags & SIGN) |
fef20d9c1 vsprintf: unify t... |
1079 1080 1081 |
spec->type = FORMAT_TYPE_LONG; else spec->type = FORMAT_TYPE_ULONG; |
75fb8f269 lib: make _tolowe... |
1082 |
} else if (_tolower(spec->qualifier) == 'z') { |
fef20d9c1 vsprintf: unify t... |
1083 1084 1085 |
spec->type = FORMAT_TYPE_SIZE_T; } else if (spec->qualifier == 't') { spec->type = FORMAT_TYPE_PTRDIFF; |
a4e94ef0d printk: add suppo... |
1086 1087 1088 1089 1090 |
} else if (spec->qualifier == 'H') { if (spec->flags & SIGN) spec->type = FORMAT_TYPE_BYTE; else spec->type = FORMAT_TYPE_UBYTE; |
fef20d9c1 vsprintf: unify t... |
1091 |
} else if (spec->qualifier == 'h') { |
39e874f8a vsprintf: fix bug... |
1092 |
if (spec->flags & SIGN) |
fef20d9c1 vsprintf: unify t... |
1093 1094 1095 1096 |
spec->type = FORMAT_TYPE_SHORT; else spec->type = FORMAT_TYPE_USHORT; } else { |
39e874f8a vsprintf: fix bug... |
1097 |
if (spec->flags & SIGN) |
fef20d9c1 vsprintf: unify t... |
1098 1099 1100 |
spec->type = FORMAT_TYPE_INT; else spec->type = FORMAT_TYPE_UINT; |
78a8bf69b vsprintf: split o... |
1101 |
} |
fef20d9c1 vsprintf: unify t... |
1102 1103 |
return ++fmt - start; |
78a8bf69b vsprintf: split o... |
1104 |
} |
1da177e4c Linux-2.6.12-rc2 |
1105 1106 1107 1108 1109 1110 1111 |
/** * vsnprintf - Format a string and place it in a buffer * @buf: The buffer to place the result into * @size: The size of the buffer, including the trailing null space * @fmt: The format string to use * @args: Arguments for the format string * |
20036fdca Add kerneldoc doc... |
1112 |
* This function follows C99 vsnprintf, but has some extensions: |
91adcd2c4 vsprintf: add %ps... |
1113 1114 |
* %pS output the name of a text symbol with offset * %ps output the name of a text symbol without offset |
0c8b946e3 vsprintf: introdu... |
1115 1116 |
* %pF output the name of a function pointer with its offset * %pf output the name of a function pointer without its offset |
0f77a8d37 vsprintf: Introdu... |
1117 |
* %pB output the name of a backtrace symbol with its offset |
8a79503aa lib/vsprintf.c: d... |
1118 1119 1120 1121 1122 1123 1124 1125 |
* %pR output the address range in a struct resource with decoded flags * %pr output the address range in a struct resource with raw flags * %pM output a 6-byte MAC address with colons * %pm output a 6-byte MAC address without colons * %pI4 print an IPv4 address without leading zeros * %pi4 print an IPv4 address with leading zeros * %pI6 print an IPv6 address with colons * %pi6 print an IPv6 address without colons |
f996f2081 lib/vsprintf: rep... |
1126 |
* %pI6c print an IPv6 address as specified by RFC 5952 |
8a79503aa lib/vsprintf.c: d... |
1127 1128 |
* %pU[bBlL] print a UUID/GUID in big or little endian using lower or upper * case. |
0efb4d207 vsnprintf: remove... |
1129 |
* %n is ignored |
20036fdca Add kerneldoc doc... |
1130 |
* |
1da177e4c Linux-2.6.12-rc2 |
1131 1132 1133 1134 |
* The return value is the number of characters which would * be generated for the given input, excluding the trailing * '\0', as per ISO C99. If you want to have the exact * number of characters written into @buf as return value |
72fd4a35a [PATCH] Numerous ... |
1135 |
* (not including the trailing '\0'), use vscnprintf(). If the |
1da177e4c Linux-2.6.12-rc2 |
1136 1137 1138 |
* return is greater than or equal to @size, the resulting * string is truncated. * |
ba1835eb3 vsprintf: make co... |
1139 |
* If you're not already dealing with a va_list consider using snprintf(). |
1da177e4c Linux-2.6.12-rc2 |
1140 1141 1142 |
*/ int vsnprintf(char *buf, size_t size, const char *fmt, va_list args) { |
1da177e4c Linux-2.6.12-rc2 |
1143 |
unsigned long long num; |
d4be151b2 vsprintf: move lo... |
1144 |
char *str, *end; |
fef20d9c1 vsprintf: unify t... |
1145 |
struct printf_spec spec = {0}; |
1da177e4c Linux-2.6.12-rc2 |
1146 |
|
f796937a0 [PATCH] Fix bound... |
1147 1148 |
/* Reject out-of-range values early. Large positive sizes are used for unknown buffer sizes. */ |
2f30b1f9e vsprintf: use WAR... |
1149 |
if (WARN_ON_ONCE((int) size < 0)) |
1da177e4c Linux-2.6.12-rc2 |
1150 |
return 0; |
1da177e4c Linux-2.6.12-rc2 |
1151 1152 |
str = buf; |
f796937a0 [PATCH] Fix bound... |
1153 |
end = buf + size; |
1da177e4c Linux-2.6.12-rc2 |
1154 |
|
f796937a0 [PATCH] Fix bound... |
1155 1156 1157 1158 |
/* Make sure end is always >= buf */ if (end < buf) { end = ((void *)-1); size = end - buf; |
1da177e4c Linux-2.6.12-rc2 |
1159 |
} |
fef20d9c1 vsprintf: unify t... |
1160 1161 |
while (*fmt) { const char *old_fmt = fmt; |
d4be151b2 vsprintf: move lo... |
1162 |
int read = format_decode(fmt, &spec); |
1da177e4c Linux-2.6.12-rc2 |
1163 |
|
fef20d9c1 vsprintf: unify t... |
1164 |
fmt += read; |
1da177e4c Linux-2.6.12-rc2 |
1165 |
|
fef20d9c1 vsprintf: unify t... |
1166 1167 1168 1169 1170 1171 1172 |
switch (spec.type) { case FORMAT_TYPE_NONE: { int copy = read; if (str < end) { if (copy > end - str) copy = end - str; memcpy(str, old_fmt, copy); |
1da177e4c Linux-2.6.12-rc2 |
1173 |
} |
fef20d9c1 vsprintf: unify t... |
1174 1175 |
str += read; break; |
1da177e4c Linux-2.6.12-rc2 |
1176 |
} |
ed681a91a vsprintf: unify t... |
1177 |
case FORMAT_TYPE_WIDTH: |
fef20d9c1 vsprintf: unify t... |
1178 1179 |
spec.field_width = va_arg(args, int); break; |
1da177e4c Linux-2.6.12-rc2 |
1180 |
|
fef20d9c1 vsprintf: unify t... |
1181 1182 1183 |
case FORMAT_TYPE_PRECISION: spec.precision = va_arg(args, int); break; |
1da177e4c Linux-2.6.12-rc2 |
1184 |
|
d4be151b2 vsprintf: move lo... |
1185 1186 |
case FORMAT_TYPE_CHAR: { char c; |
fef20d9c1 vsprintf: unify t... |
1187 1188 |
if (!(spec.flags & LEFT)) { while (--spec.field_width > 0) { |
f796937a0 [PATCH] Fix bound... |
1189 |
if (str < end) |
1da177e4c Linux-2.6.12-rc2 |
1190 1191 |
*str = ' '; ++str; |
1da177e4c Linux-2.6.12-rc2 |
1192 |
|
fef20d9c1 vsprintf: unify t... |
1193 1194 1195 1196 1197 1198 1199 |
} } c = (unsigned char) va_arg(args, int); if (str < end) *str = c; ++str; while (--spec.field_width > 0) { |
f796937a0 [PATCH] Fix bound... |
1200 |
if (str < end) |
fef20d9c1 vsprintf: unify t... |
1201 |
*str = ' '; |
1da177e4c Linux-2.6.12-rc2 |
1202 |
++str; |
fef20d9c1 vsprintf: unify t... |
1203 1204 |
} break; |
d4be151b2 vsprintf: move lo... |
1205 |
} |
1da177e4c Linux-2.6.12-rc2 |
1206 |
|
fef20d9c1 vsprintf: unify t... |
1207 1208 1209 |
case FORMAT_TYPE_STR: str = string(str, end, va_arg(args, char *), spec); break; |
1da177e4c Linux-2.6.12-rc2 |
1210 |
|
fef20d9c1 vsprintf: unify t... |
1211 1212 1213 1214 1215 1216 |
case FORMAT_TYPE_PTR: str = pointer(fmt+1, str, end, va_arg(args, void *), spec); while (isalnum(*fmt)) fmt++; break; |
1da177e4c Linux-2.6.12-rc2 |
1217 |
|
fef20d9c1 vsprintf: unify t... |
1218 1219 1220 1221 1222 |
case FORMAT_TYPE_PERCENT_CHAR: if (str < end) *str = '%'; ++str; break; |
1da177e4c Linux-2.6.12-rc2 |
1223 |
|
fef20d9c1 vsprintf: unify t... |
1224 1225 1226 1227 |
case FORMAT_TYPE_INVALID: if (str < end) *str = '%'; ++str; |
fef20d9c1 vsprintf: unify t... |
1228 1229 1230 |
break; case FORMAT_TYPE_NRCHARS: { |
ef0658f3d vsprintf.c: Reduc... |
1231 |
u8 qualifier = spec.qualifier; |
fef20d9c1 vsprintf: unify t... |
1232 1233 1234 1235 |
if (qualifier == 'l') { long *ip = va_arg(args, long *); *ip = (str - buf); |
75fb8f269 lib: make _tolowe... |
1236 |
} else if (_tolower(qualifier) == 'z') { |
fef20d9c1 vsprintf: unify t... |
1237 1238 1239 1240 1241 1242 1243 |
size_t *ip = va_arg(args, size_t *); *ip = (str - buf); } else { int *ip = va_arg(args, int *); *ip = (str - buf); } break; |
1da177e4c Linux-2.6.12-rc2 |
1244 |
} |
fef20d9c1 vsprintf: unify t... |
1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 |
default: switch (spec.type) { case FORMAT_TYPE_LONG_LONG: num = va_arg(args, long long); break; case FORMAT_TYPE_ULONG: num = va_arg(args, unsigned long); break; case FORMAT_TYPE_LONG: num = va_arg(args, long); break; case FORMAT_TYPE_SIZE_T: num = va_arg(args, size_t); break; case FORMAT_TYPE_PTRDIFF: num = va_arg(args, ptrdiff_t); break; |
a4e94ef0d printk: add suppo... |
1263 1264 1265 1266 1267 1268 |
case FORMAT_TYPE_UBYTE: num = (unsigned char) va_arg(args, int); break; case FORMAT_TYPE_BYTE: num = (signed char) va_arg(args, int); break; |
fef20d9c1 vsprintf: unify t... |
1269 1270 1271 1272 1273 1274 |
case FORMAT_TYPE_USHORT: num = (unsigned short) va_arg(args, int); break; case FORMAT_TYPE_SHORT: num = (short) va_arg(args, int); break; |
39e874f8a vsprintf: fix bug... |
1275 1276 |
case FORMAT_TYPE_INT: num = (int) va_arg(args, int); |
fef20d9c1 vsprintf: unify t... |
1277 1278 1279 1280 1281 1282 |
break; default: num = va_arg(args, unsigned int); } str = number(str, end, num, spec); |
1da177e4c Linux-2.6.12-rc2 |
1283 |
} |
1da177e4c Linux-2.6.12-rc2 |
1284 |
} |
fef20d9c1 vsprintf: unify t... |
1285 |
|
f796937a0 [PATCH] Fix bound... |
1286 1287 1288 1289 |
if (size > 0) { if (str < end) *str = '\0'; else |
0a6047eef Fix vsnprintf off... |
1290 |
end[-1] = '\0'; |
f796937a0 [PATCH] Fix bound... |
1291 |
} |
fef20d9c1 vsprintf: unify t... |
1292 |
|
f796937a0 [PATCH] Fix bound... |
1293 |
/* the trailing null byte doesn't count towards the total */ |
1da177e4c Linux-2.6.12-rc2 |
1294 |
return str-buf; |
fef20d9c1 vsprintf: unify t... |
1295 |
|
1da177e4c Linux-2.6.12-rc2 |
1296 |
} |
1da177e4c Linux-2.6.12-rc2 |
1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 |
EXPORT_SYMBOL(vsnprintf); /** * vscnprintf - Format a string and place it in a buffer * @buf: The buffer to place the result into * @size: The size of the buffer, including the trailing null space * @fmt: The format string to use * @args: Arguments for the format string * * The return value is the number of characters which have been written into |
b921c69fb lib/vsprintf.c: f... |
1307 |
* the @buf not including the trailing '\0'. If @size is == 0 the function |
1da177e4c Linux-2.6.12-rc2 |
1308 1309 |
* returns 0. * |
ba1835eb3 vsprintf: make co... |
1310 |
* If you're not already dealing with a va_list consider using scnprintf(). |
20036fdca Add kerneldoc doc... |
1311 1312 |
* * See the vsnprintf() documentation for format string extensions over C99. |
1da177e4c Linux-2.6.12-rc2 |
1313 1314 1315 1316 |
*/ int vscnprintf(char *buf, size_t size, const char *fmt, va_list args) { int i; |
7b9186f5e vsprintf: give it... |
1317 |
i = vsnprintf(buf, size, fmt, args); |
b921c69fb lib/vsprintf.c: f... |
1318 1319 1320 1321 1322 |
if (likely(i < size)) return i; if (size != 0) return size - 1; return 0; |
1da177e4c Linux-2.6.12-rc2 |
1323 |
} |
1da177e4c Linux-2.6.12-rc2 |
1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 |
EXPORT_SYMBOL(vscnprintf); /** * snprintf - Format a string and place it in a buffer * @buf: The buffer to place the result into * @size: The size of the buffer, including the trailing null space * @fmt: The format string to use * @...: Arguments for the format string * * The return value is the number of characters which would be * generated for the given input, excluding the trailing null, * as per ISO C99. If the return is greater than or equal to * @size, the resulting string is truncated. |
20036fdca Add kerneldoc doc... |
1337 1338 |
* * See the vsnprintf() documentation for format string extensions over C99. |
1da177e4c Linux-2.6.12-rc2 |
1339 |
*/ |
7b9186f5e vsprintf: give it... |
1340 |
int snprintf(char *buf, size_t size, const char *fmt, ...) |
1da177e4c Linux-2.6.12-rc2 |
1341 1342 1343 1344 1345 |
{ va_list args; int i; va_start(args, fmt); |
7b9186f5e vsprintf: give it... |
1346 |
i = vsnprintf(buf, size, fmt, args); |
1da177e4c Linux-2.6.12-rc2 |
1347 |
va_end(args); |
7b9186f5e vsprintf: give it... |
1348 |
|
1da177e4c Linux-2.6.12-rc2 |
1349 1350 |
return i; } |
1da177e4c Linux-2.6.12-rc2 |
1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 |
EXPORT_SYMBOL(snprintf); /** * scnprintf - Format a string and place it in a buffer * @buf: The buffer to place the result into * @size: The size of the buffer, including the trailing null space * @fmt: The format string to use * @...: Arguments for the format string * * The return value is the number of characters written into @buf not including |
b903c0b88 lib: fix scnprint... |
1361 |
* the trailing '\0'. If @size is == 0 the function returns 0. |
1da177e4c Linux-2.6.12-rc2 |
1362 |
*/ |
7b9186f5e vsprintf: give it... |
1363 |
int scnprintf(char *buf, size_t size, const char *fmt, ...) |
1da177e4c Linux-2.6.12-rc2 |
1364 1365 1366 1367 1368 |
{ va_list args; int i; va_start(args, fmt); |
b921c69fb lib/vsprintf.c: f... |
1369 |
i = vscnprintf(buf, size, fmt, args); |
1da177e4c Linux-2.6.12-rc2 |
1370 |
va_end(args); |
7b9186f5e vsprintf: give it... |
1371 |
|
b921c69fb lib/vsprintf.c: f... |
1372 |
return i; |
1da177e4c Linux-2.6.12-rc2 |
1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 |
} EXPORT_SYMBOL(scnprintf); /** * vsprintf - Format a string and place it in a buffer * @buf: The buffer to place the result into * @fmt: The format string to use * @args: Arguments for the format string * * The function returns the number of characters written |
72fd4a35a [PATCH] Numerous ... |
1383 |
* into @buf. Use vsnprintf() or vscnprintf() in order to avoid |
1da177e4c Linux-2.6.12-rc2 |
1384 1385 |
* buffer overflows. * |
ba1835eb3 vsprintf: make co... |
1386 |
* If you're not already dealing with a va_list consider using sprintf(). |
20036fdca Add kerneldoc doc... |
1387 1388 |
* * See the vsnprintf() documentation for format string extensions over C99. |
1da177e4c Linux-2.6.12-rc2 |
1389 1390 1391 1392 1393 |
*/ int vsprintf(char *buf, const char *fmt, va_list args) { return vsnprintf(buf, INT_MAX, fmt, args); } |
1da177e4c Linux-2.6.12-rc2 |
1394 1395 1396 1397 1398 1399 1400 1401 1402 |
EXPORT_SYMBOL(vsprintf); /** * sprintf - Format a string and place it in a buffer * @buf: The buffer to place the result into * @fmt: The format string to use * @...: Arguments for the format string * * The function returns the number of characters written |
72fd4a35a [PATCH] Numerous ... |
1403 |
* into @buf. Use snprintf() or scnprintf() in order to avoid |
1da177e4c Linux-2.6.12-rc2 |
1404 |
* buffer overflows. |
20036fdca Add kerneldoc doc... |
1405 1406 |
* * See the vsnprintf() documentation for format string extensions over C99. |
1da177e4c Linux-2.6.12-rc2 |
1407 |
*/ |
7b9186f5e vsprintf: give it... |
1408 |
int sprintf(char *buf, const char *fmt, ...) |
1da177e4c Linux-2.6.12-rc2 |
1409 1410 1411 1412 1413 |
{ va_list args; int i; va_start(args, fmt); |
7b9186f5e vsprintf: give it... |
1414 |
i = vsnprintf(buf, INT_MAX, fmt, args); |
1da177e4c Linux-2.6.12-rc2 |
1415 |
va_end(args); |
7b9186f5e vsprintf: give it... |
1416 |
|
1da177e4c Linux-2.6.12-rc2 |
1417 1418 |
return i; } |
1da177e4c Linux-2.6.12-rc2 |
1419 |
EXPORT_SYMBOL(sprintf); |
4370aa4aa vsprintf: add bin... |
1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 |
#ifdef CONFIG_BINARY_PRINTF /* * bprintf service: * vbin_printf() - VA arguments to binary data * bstr_printf() - Binary data to text string */ /** * vbin_printf - Parse a format string and place args' binary value in a buffer * @bin_buf: The buffer to place args' binary value * @size: The size of the buffer(by words(32bits), not characters) * @fmt: The format string to use * @args: Arguments for the format string * * The format follows C99 vsnprintf, except %n is ignored, and its argument * is skiped. * * The return value is the number of words(32bits) which would be generated for * the given input. * * NOTE: * If the return value is greater than @size, the resulting bin_buf is NOT * valid for bstr_printf(). */ int vbin_printf(u32 *bin_buf, size_t size, const char *fmt, va_list args) { |
fef20d9c1 vsprintf: unify t... |
1446 |
struct printf_spec spec = {0}; |
4370aa4aa vsprintf: add bin... |
1447 |
char *str, *end; |
4370aa4aa vsprintf: add bin... |
1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 |
str = (char *)bin_buf; end = (char *)(bin_buf + size); #define save_arg(type) \ do { \ if (sizeof(type) == 8) { \ unsigned long long value; \ str = PTR_ALIGN(str, sizeof(u32)); \ value = va_arg(args, unsigned long long); \ if (str + sizeof(type) <= end) { \ *(u32 *)str = *(u32 *)&value; \ *(u32 *)(str + 4) = *((u32 *)&value + 1); \ } \ } else { \ unsigned long value; \ str = PTR_ALIGN(str, sizeof(type)); \ value = va_arg(args, int); \ if (str + sizeof(type) <= end) \ *(typeof(type) *)str = (type)value; \ } \ str += sizeof(type); \ } while (0) |
fef20d9c1 vsprintf: unify t... |
1471 |
while (*fmt) { |
d4be151b2 vsprintf: move lo... |
1472 |
int read = format_decode(fmt, &spec); |
4370aa4aa vsprintf: add bin... |
1473 |
|
fef20d9c1 vsprintf: unify t... |
1474 |
fmt += read; |
4370aa4aa vsprintf: add bin... |
1475 |
|
fef20d9c1 vsprintf: unify t... |
1476 1477 |
switch (spec.type) { case FORMAT_TYPE_NONE: |
d4be151b2 vsprintf: move lo... |
1478 1479 |
case FORMAT_TYPE_INVALID: case FORMAT_TYPE_PERCENT_CHAR: |
fef20d9c1 vsprintf: unify t... |
1480 |
break; |
ed681a91a vsprintf: unify t... |
1481 |
case FORMAT_TYPE_WIDTH: |
fef20d9c1 vsprintf: unify t... |
1482 1483 1484 1485 1486 |
case FORMAT_TYPE_PRECISION: save_arg(int); break; case FORMAT_TYPE_CHAR: |
4370aa4aa vsprintf: add bin... |
1487 |
save_arg(char); |
fef20d9c1 vsprintf: unify t... |
1488 1489 1490 |
break; case FORMAT_TYPE_STR: { |
4370aa4aa vsprintf: add bin... |
1491 1492 |
const char *save_str = va_arg(args, char *); size_t len; |
6c3566341 vsprintf: pre-cal... |
1493 |
|
4370aa4aa vsprintf: add bin... |
1494 1495 |
if ((unsigned long)save_str > (unsigned long)-PAGE_SIZE || (unsigned long)save_str < PAGE_SIZE) |
0f4f81dce vsprintf: factori... |
1496 |
save_str = "(null)"; |
6c3566341 vsprintf: pre-cal... |
1497 1498 1499 1500 |
len = strlen(save_str) + 1; if (str + len < end) memcpy(str, save_str, len); str += len; |
fef20d9c1 vsprintf: unify t... |
1501 |
break; |
4370aa4aa vsprintf: add bin... |
1502 |
} |
fef20d9c1 vsprintf: unify t... |
1503 1504 |
case FORMAT_TYPE_PTR: |
4370aa4aa vsprintf: add bin... |
1505 1506 |
save_arg(void *); /* skip all alphanumeric pointer suffixes */ |
fef20d9c1 vsprintf: unify t... |
1507 |
while (isalnum(*fmt)) |
4370aa4aa vsprintf: add bin... |
1508 |
fmt++; |
fef20d9c1 vsprintf: unify t... |
1509 |
break; |
fef20d9c1 vsprintf: unify t... |
1510 |
case FORMAT_TYPE_NRCHARS: { |
4370aa4aa vsprintf: add bin... |
1511 |
/* skip %n 's argument */ |
ef0658f3d vsprintf.c: Reduc... |
1512 |
u8 qualifier = spec.qualifier; |
4370aa4aa vsprintf: add bin... |
1513 1514 1515 |
void *skip_arg; if (qualifier == 'l') skip_arg = va_arg(args, long *); |
75fb8f269 lib: make _tolowe... |
1516 |
else if (_tolower(qualifier) == 'z') |
4370aa4aa vsprintf: add bin... |
1517 1518 1519 |
skip_arg = va_arg(args, size_t *); else skip_arg = va_arg(args, int *); |
fef20d9c1 vsprintf: unify t... |
1520 |
break; |
4370aa4aa vsprintf: add bin... |
1521 |
} |
fef20d9c1 vsprintf: unify t... |
1522 1523 1524 1525 1526 |
default: switch (spec.type) { case FORMAT_TYPE_LONG_LONG: |
4370aa4aa vsprintf: add bin... |
1527 |
save_arg(long long); |
fef20d9c1 vsprintf: unify t... |
1528 1529 1530 |
break; case FORMAT_TYPE_ULONG: case FORMAT_TYPE_LONG: |
4370aa4aa vsprintf: add bin... |
1531 |
save_arg(unsigned long); |
fef20d9c1 vsprintf: unify t... |
1532 1533 |
break; case FORMAT_TYPE_SIZE_T: |
4370aa4aa vsprintf: add bin... |
1534 |
save_arg(size_t); |
fef20d9c1 vsprintf: unify t... |
1535 1536 |
break; case FORMAT_TYPE_PTRDIFF: |
4370aa4aa vsprintf: add bin... |
1537 |
save_arg(ptrdiff_t); |
fef20d9c1 vsprintf: unify t... |
1538 |
break; |
a4e94ef0d printk: add suppo... |
1539 1540 1541 1542 |
case FORMAT_TYPE_UBYTE: case FORMAT_TYPE_BYTE: save_arg(char); break; |
fef20d9c1 vsprintf: unify t... |
1543 1544 |
case FORMAT_TYPE_USHORT: case FORMAT_TYPE_SHORT: |
4370aa4aa vsprintf: add bin... |
1545 |
save_arg(short); |
fef20d9c1 vsprintf: unify t... |
1546 1547 |
break; default: |
4370aa4aa vsprintf: add bin... |
1548 |
save_arg(int); |
fef20d9c1 vsprintf: unify t... |
1549 |
} |
4370aa4aa vsprintf: add bin... |
1550 1551 |
} } |
fef20d9c1 vsprintf: unify t... |
1552 |
|
7b9186f5e vsprintf: give it... |
1553 |
return (u32 *)(PTR_ALIGN(str, sizeof(u32))) - bin_buf; |
fef20d9c1 vsprintf: unify t... |
1554 |
#undef save_arg |
4370aa4aa vsprintf: add bin... |
1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 |
} EXPORT_SYMBOL_GPL(vbin_printf); /** * bstr_printf - Format a string from binary arguments and place it in a buffer * @buf: The buffer to place the result into * @size: The size of the buffer, including the trailing null space * @fmt: The format string to use * @bin_buf: Binary arguments for the format string * * This function like C99 vsnprintf, but the difference is that vsnprintf gets * arguments from stack, and bstr_printf gets arguments from @bin_buf which is * a binary buffer that generated by vbin_printf. * * The format follows C99 vsnprintf, but has some extensions: |
0efb4d207 vsnprintf: remove... |
1570 |
* see vsnprintf comment for details. |
4370aa4aa vsprintf: add bin... |
1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 |
* * The return value is the number of characters which would * be generated for the given input, excluding the trailing * '\0', as per ISO C99. If you want to have the exact * number of characters written into @buf as return value * (not including the trailing '\0'), use vscnprintf(). If the * return is greater than or equal to @size, the resulting * string is truncated. */ int bstr_printf(char *buf, size_t size, const char *fmt, const u32 *bin_buf) { |
fef20d9c1 vsprintf: unify t... |
1582 |
struct printf_spec spec = {0}; |
d4be151b2 vsprintf: move lo... |
1583 1584 |
char *str, *end; const char *args = (const char *)bin_buf; |
4370aa4aa vsprintf: add bin... |
1585 |
|
2f30b1f9e vsprintf: use WAR... |
1586 |
if (WARN_ON_ONCE((int) size < 0)) |
4370aa4aa vsprintf: add bin... |
1587 |
return 0; |
4370aa4aa vsprintf: add bin... |
1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 |
str = buf; end = buf + size; #define get_arg(type) \ ({ \ typeof(type) value; \ if (sizeof(type) == 8) { \ args = PTR_ALIGN(args, sizeof(u32)); \ *(u32 *)&value = *(u32 *)args; \ *((u32 *)&value + 1) = *(u32 *)(args + 4); \ } else { \ args = PTR_ALIGN(args, sizeof(type)); \ value = *(typeof(type) *)args; \ } \ args += sizeof(type); \ value; \ }) /* Make sure end is always >= buf */ if (end < buf) { end = ((void *)-1); size = end - buf; } |
fef20d9c1 vsprintf: unify t... |
1612 |
while (*fmt) { |
fef20d9c1 vsprintf: unify t... |
1613 |
const char *old_fmt = fmt; |
d4be151b2 vsprintf: move lo... |
1614 |
int read = format_decode(fmt, &spec); |
4370aa4aa vsprintf: add bin... |
1615 |
|
fef20d9c1 vsprintf: unify t... |
1616 |
fmt += read; |
4370aa4aa vsprintf: add bin... |
1617 |
|
fef20d9c1 vsprintf: unify t... |
1618 1619 1620 1621 1622 1623 1624 |
switch (spec.type) { case FORMAT_TYPE_NONE: { int copy = read; if (str < end) { if (copy > end - str) copy = end - str; memcpy(str, old_fmt, copy); |
4370aa4aa vsprintf: add bin... |
1625 |
} |
fef20d9c1 vsprintf: unify t... |
1626 1627 |
str += read; break; |
4370aa4aa vsprintf: add bin... |
1628 |
} |
ed681a91a vsprintf: unify t... |
1629 |
case FORMAT_TYPE_WIDTH: |
fef20d9c1 vsprintf: unify t... |
1630 1631 |
spec.field_width = get_arg(int); break; |
4370aa4aa vsprintf: add bin... |
1632 |
|
fef20d9c1 vsprintf: unify t... |
1633 1634 1635 |
case FORMAT_TYPE_PRECISION: spec.precision = get_arg(int); break; |
4370aa4aa vsprintf: add bin... |
1636 |
|
d4be151b2 vsprintf: move lo... |
1637 1638 |
case FORMAT_TYPE_CHAR: { char c; |
fef20d9c1 vsprintf: unify t... |
1639 1640 |
if (!(spec.flags & LEFT)) { while (--spec.field_width > 0) { |
4370aa4aa vsprintf: add bin... |
1641 1642 1643 1644 1645 1646 1647 1648 1649 |
if (str < end) *str = ' '; ++str; } } c = (unsigned char) get_arg(char); if (str < end) *str = c; ++str; |
fef20d9c1 vsprintf: unify t... |
1650 |
while (--spec.field_width > 0) { |
4370aa4aa vsprintf: add bin... |
1651 1652 1653 1654 |
if (str < end) *str = ' '; ++str; } |
fef20d9c1 vsprintf: unify t... |
1655 |
break; |
d4be151b2 vsprintf: move lo... |
1656 |
} |
4370aa4aa vsprintf: add bin... |
1657 |
|
fef20d9c1 vsprintf: unify t... |
1658 |
case FORMAT_TYPE_STR: { |
4370aa4aa vsprintf: add bin... |
1659 |
const char *str_arg = args; |
d4be151b2 vsprintf: move lo... |
1660 |
args += strlen(str_arg) + 1; |
fef20d9c1 vsprintf: unify t... |
1661 1662 |
str = string(str, end, (char *)str_arg, spec); break; |
4370aa4aa vsprintf: add bin... |
1663 |
} |
fef20d9c1 vsprintf: unify t... |
1664 1665 1666 |
case FORMAT_TYPE_PTR: str = pointer(fmt+1, str, end, get_arg(void *), spec); while (isalnum(*fmt)) |
4370aa4aa vsprintf: add bin... |
1667 |
fmt++; |
fef20d9c1 vsprintf: unify t... |
1668 |
break; |
4370aa4aa vsprintf: add bin... |
1669 |
|
fef20d9c1 vsprintf: unify t... |
1670 |
case FORMAT_TYPE_PERCENT_CHAR: |
fef20d9c1 vsprintf: unify t... |
1671 |
case FORMAT_TYPE_INVALID: |
4370aa4aa vsprintf: add bin... |
1672 1673 1674 |
if (str < end) *str = '%'; ++str; |
fef20d9c1 vsprintf: unify t... |
1675 1676 1677 1678 1679 |
break; case FORMAT_TYPE_NRCHARS: /* skip */ break; |
d4be151b2 vsprintf: move lo... |
1680 1681 |
default: { unsigned long long num; |
fef20d9c1 vsprintf: unify t... |
1682 1683 1684 1685 1686 1687 |
switch (spec.type) { case FORMAT_TYPE_LONG_LONG: num = get_arg(long long); break; case FORMAT_TYPE_ULONG: |
fef20d9c1 vsprintf: unify t... |
1688 1689 1690 1691 1692 1693 1694 1695 1696 |
case FORMAT_TYPE_LONG: num = get_arg(unsigned long); break; case FORMAT_TYPE_SIZE_T: num = get_arg(size_t); break; case FORMAT_TYPE_PTRDIFF: num = get_arg(ptrdiff_t); break; |
a4e94ef0d printk: add suppo... |
1697 1698 1699 1700 1701 1702 |
case FORMAT_TYPE_UBYTE: num = get_arg(unsigned char); break; case FORMAT_TYPE_BYTE: num = get_arg(signed char); break; |
fef20d9c1 vsprintf: unify t... |
1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 |
case FORMAT_TYPE_USHORT: num = get_arg(unsigned short); break; case FORMAT_TYPE_SHORT: num = get_arg(short); break; case FORMAT_TYPE_UINT: num = get_arg(unsigned int); break; default: num = get_arg(int); } str = number(str, end, num, spec); |
d4be151b2 vsprintf: move lo... |
1717 1718 1719 |
} /* default: */ } /* switch(spec.type) */ } /* while(*fmt) */ |
fef20d9c1 vsprintf: unify t... |
1720 |
|
4370aa4aa vsprintf: add bin... |
1721 1722 1723 1724 1725 1726 |
if (size > 0) { if (str < end) *str = '\0'; else end[-1] = '\0'; } |
fef20d9c1 vsprintf: unify t... |
1727 |
|
4370aa4aa vsprintf: add bin... |
1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 |
#undef get_arg /* the trailing null byte doesn't count towards the total */ return str - buf; } EXPORT_SYMBOL_GPL(bstr_printf); /** * bprintf - Parse a format string and place args' binary value in a buffer * @bin_buf: The buffer to place args' binary value * @size: The size of the buffer(by words(32bits), not characters) * @fmt: The format string to use * @...: Arguments for the format string * * The function returns the number of words(u32) written * into @bin_buf. */ int bprintf(u32 *bin_buf, size_t size, const char *fmt, ...) { va_list args; int ret; va_start(args, fmt); ret = vbin_printf(bin_buf, size, fmt, args); va_end(args); |
7b9186f5e vsprintf: give it... |
1753 |
|
4370aa4aa vsprintf: add bin... |
1754 1755 1756 1757 1758 |
return ret; } EXPORT_SYMBOL_GPL(bprintf); #endif /* CONFIG_BINARY_PRINTF */ |
1da177e4c Linux-2.6.12-rc2 |
1759 1760 1761 1762 1763 1764 |
/** * vsscanf - Unformat a buffer into a list of arguments * @buf: input buffer * @fmt: format of buffer * @args: arguments */ |
7b9186f5e vsprintf: give it... |
1765 |
int vsscanf(const char *buf, const char *fmt, va_list args) |
1da177e4c Linux-2.6.12-rc2 |
1766 1767 1768 1769 1770 |
{ const char *str = buf; char *next; char digit; int num = 0; |
ef0658f3d vsprintf.c: Reduc... |
1771 1772 1773 |
u8 qualifier; u8 base; s16 field_width; |
d4be151b2 vsprintf: move lo... |
1774 |
bool is_sign; |
1da177e4c Linux-2.6.12-rc2 |
1775 |
|
7b9186f5e vsprintf: give it... |
1776 |
while (*fmt && *str) { |
1da177e4c Linux-2.6.12-rc2 |
1777 1778 1779 1780 1781 |
/* skip any white space in format */ /* white space in format matchs any amount of * white space, including none, in the input. */ if (isspace(*fmt)) { |
e7d2860b6 tree-wide: conver... |
1782 1783 |
fmt = skip_spaces(++fmt); str = skip_spaces(str); |
1da177e4c Linux-2.6.12-rc2 |
1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 |
} /* anything that is not a conversion must match exactly */ if (*fmt != '%' && *fmt) { if (*fmt++ != *str++) break; continue; } if (!*fmt) break; ++fmt; |
7b9186f5e vsprintf: give it... |
1796 |
|
1da177e4c Linux-2.6.12-rc2 |
1797 1798 1799 1800 |
/* skip this conversion. * advance both strings to next white space */ if (*fmt == '*') { |
8fccae2c9 sscanf(): fix %*s%n |
1801 |
while (!isspace(*fmt) && *fmt != '%' && *fmt) |
1da177e4c Linux-2.6.12-rc2 |
1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 |
fmt++; while (!isspace(*str) && *str) str++; continue; } /* get field width */ field_width = -1; if (isdigit(*fmt)) field_width = skip_atoi(&fmt); /* get conversion qualifier */ qualifier = -1; |
75fb8f269 lib: make _tolowe... |
1815 1816 |
if (*fmt == 'h' || _tolower(*fmt) == 'l' || _tolower(*fmt) == 'z') { |
1da177e4c Linux-2.6.12-rc2 |
1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 |
qualifier = *fmt++; if (unlikely(qualifier == *fmt)) { if (qualifier == 'h') { qualifier = 'H'; fmt++; } else if (qualifier == 'l') { qualifier = 'L'; fmt++; } } } |
1da177e4c Linux-2.6.12-rc2 |
1828 1829 1830 |
if (!*fmt || !*str) break; |
d4be151b2 vsprintf: move lo... |
1831 1832 |
base = 10; is_sign = 0; |
7b9186f5e vsprintf: give it... |
1833 |
switch (*fmt++) { |
1da177e4c Linux-2.6.12-rc2 |
1834 1835 |
case 'c': { |
7b9186f5e vsprintf: give it... |
1836 |
char *s = (char *)va_arg(args, char*); |
1da177e4c Linux-2.6.12-rc2 |
1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 |
if (field_width == -1) field_width = 1; do { *s++ = *str++; } while (--field_width > 0 && *str); num++; } continue; case 's': { |
7b9186f5e vsprintf: give it... |
1847 1848 |
char *s = (char *)va_arg(args, char *); if (field_width == -1) |
4be929be3 kernel-wide: repl... |
1849 |
field_width = SHRT_MAX; |
1da177e4c Linux-2.6.12-rc2 |
1850 |
/* first, skip leading white space in buffer */ |
e7d2860b6 tree-wide: conver... |
1851 |
str = skip_spaces(str); |
1da177e4c Linux-2.6.12-rc2 |
1852 1853 |
/* now copy until next white space */ |
7b9186f5e vsprintf: give it... |
1854 |
while (*str && !isspace(*str) && field_width--) |
1da177e4c Linux-2.6.12-rc2 |
1855 |
*s++ = *str++; |
1da177e4c Linux-2.6.12-rc2 |
1856 1857 1858 1859 1860 1861 1862 |
*s = '\0'; num++; } continue; case 'n': /* return number of characters read so far */ { |
7b9186f5e vsprintf: give it... |
1863 |
int *i = (int *)va_arg(args, int*); |
1da177e4c Linux-2.6.12-rc2 |
1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 |
*i = str - buf; } continue; case 'o': base = 8; break; case 'x': case 'X': base = 16; break; case 'i': |
7b9186f5e vsprintf: give it... |
1875 |
base = 0; |
1da177e4c Linux-2.6.12-rc2 |
1876 1877 1878 1879 1880 1881 |
case 'd': is_sign = 1; case 'u': break; case '%': /* looking for '%' in str */ |
7b9186f5e vsprintf: give it... |
1882 |
if (*str++ != '%') |
1da177e4c Linux-2.6.12-rc2 |
1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 |
return num; continue; default: /* invalid format; stop here */ return num; } /* have some sort of integer conversion. * first, skip white space in buffer. */ |
e7d2860b6 tree-wide: conver... |
1893 |
str = skip_spaces(str); |
1da177e4c Linux-2.6.12-rc2 |
1894 1895 1896 1897 1898 1899 |
digit = *str; if (is_sign && digit == '-') digit = *(str + 1); if (!digit |
7b9186f5e vsprintf: give it... |
1900 1901 1902 1903 1904 |
|| (base == 16 && !isxdigit(digit)) || (base == 10 && !isdigit(digit)) || (base == 8 && (!isdigit(digit) || digit > '7')) || (base == 0 && !isdigit(digit))) break; |
1da177e4c Linux-2.6.12-rc2 |
1905 |
|
7b9186f5e vsprintf: give it... |
1906 |
switch (qualifier) { |
1da177e4c Linux-2.6.12-rc2 |
1907 1908 |
case 'H': /* that's 'hh' in format */ if (is_sign) { |
7b9186f5e vsprintf: give it... |
1909 1910 |
signed char *s = (signed char *)va_arg(args, signed char *); *s = (signed char)simple_strtol(str, &next, base); |
1da177e4c Linux-2.6.12-rc2 |
1911 |
} else { |
7b9186f5e vsprintf: give it... |
1912 1913 |
unsigned char *s = (unsigned char *)va_arg(args, unsigned char *); *s = (unsigned char)simple_strtoul(str, &next, base); |
1da177e4c Linux-2.6.12-rc2 |
1914 1915 1916 1917 |
} break; case 'h': if (is_sign) { |
7b9186f5e vsprintf: give it... |
1918 1919 |
short *s = (short *)va_arg(args, short *); *s = (short)simple_strtol(str, &next, base); |
1da177e4c Linux-2.6.12-rc2 |
1920 |
} else { |
7b9186f5e vsprintf: give it... |
1921 1922 |
unsigned short *s = (unsigned short *)va_arg(args, unsigned short *); *s = (unsigned short)simple_strtoul(str, &next, base); |
1da177e4c Linux-2.6.12-rc2 |
1923 1924 1925 1926 |
} break; case 'l': if (is_sign) { |
7b9186f5e vsprintf: give it... |
1927 1928 |
long *l = (long *)va_arg(args, long *); *l = simple_strtol(str, &next, base); |
1da177e4c Linux-2.6.12-rc2 |
1929 |
} else { |
7b9186f5e vsprintf: give it... |
1930 1931 |
unsigned long *l = (unsigned long *)va_arg(args, unsigned long *); *l = simple_strtoul(str, &next, base); |
1da177e4c Linux-2.6.12-rc2 |
1932 1933 1934 1935 |
} break; case 'L': if (is_sign) { |
7b9186f5e vsprintf: give it... |
1936 1937 |
long long *l = (long long *)va_arg(args, long long *); *l = simple_strtoll(str, &next, base); |
1da177e4c Linux-2.6.12-rc2 |
1938 |
} else { |
7b9186f5e vsprintf: give it... |
1939 1940 |
unsigned long long *l = (unsigned long long *)va_arg(args, unsigned long long *); *l = simple_strtoull(str, &next, base); |
1da177e4c Linux-2.6.12-rc2 |
1941 1942 1943 1944 1945 |
} break; case 'Z': case 'z': { |
7b9186f5e vsprintf: give it... |
1946 1947 |
size_t *s = (size_t *)va_arg(args, size_t *); *s = (size_t)simple_strtoul(str, &next, base); |
1da177e4c Linux-2.6.12-rc2 |
1948 1949 1950 1951 |
} break; default: if (is_sign) { |
7b9186f5e vsprintf: give it... |
1952 1953 |
int *i = (int *)va_arg(args, int *); *i = (int)simple_strtol(str, &next, base); |
1da177e4c Linux-2.6.12-rc2 |
1954 |
} else { |
7b9186f5e vsprintf: give it... |
1955 1956 |
unsigned int *i = (unsigned int *)va_arg(args, unsigned int*); *i = (unsigned int)simple_strtoul(str, &next, base); |
1da177e4c Linux-2.6.12-rc2 |
1957 1958 1959 1960 1961 1962 1963 1964 1965 |
} break; } num++; if (!next) break; str = next; } |
c6b40d16d fix sscanf %n mat... |
1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 |
/* * Now we've come all the way through so either the input string or the * format ended. In the former case, there can be a %n at the current * position in the format that needs to be filled. */ if (*fmt == '%' && *(fmt + 1) == 'n') { int *p = (int *)va_arg(args, int *); *p = str - buf; } |
1da177e4c Linux-2.6.12-rc2 |
1976 1977 |
return num; } |
1da177e4c Linux-2.6.12-rc2 |
1978 1979 1980 1981 1982 1983 1984 1985 |
EXPORT_SYMBOL(vsscanf); /** * sscanf - Unformat a buffer into a list of arguments * @buf: input buffer * @fmt: formatting of buffer * @...: resulting arguments */ |
7b9186f5e vsprintf: give it... |
1986 |
int sscanf(const char *buf, const char *fmt, ...) |
1da177e4c Linux-2.6.12-rc2 |
1987 1988 1989 |
{ va_list args; int i; |
7b9186f5e vsprintf: give it... |
1990 1991 |
va_start(args, fmt); i = vsscanf(buf, fmt, args); |
1da177e4c Linux-2.6.12-rc2 |
1992 |
va_end(args); |
7b9186f5e vsprintf: give it... |
1993 |
|
1da177e4c Linux-2.6.12-rc2 |
1994 1995 |
return i; } |
1da177e4c Linux-2.6.12-rc2 |
1996 |
EXPORT_SYMBOL(sscanf); |