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lib/vsprintf.c
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/* * linux/lib/vsprintf.c * * Copyright (C) 1991, 1992 Linus Torvalds */ /* vsprintf.c -- Lars Wirzenius & Linus Torvalds. */ /* * Wirzenius wrote this portably, Torvalds fucked it up :-) */ |
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/* |
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* 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> |
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#include <linux/kallsyms.h> #include <linux/uaccess.h> |
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#include <linux/ioport.h> |
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#include <net/addrconf.h> |
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#include <asm/page.h> /* for PAGE_SIZE */ |
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#include <asm/div64.h> |
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#include <asm/sections.h> /* for dereference_function_descriptor() */ |
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/* Works only for digits and letters, but small and fast */ #define TOLOWER(x) ((x) | 0x20) |
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static unsigned int simple_guess_base(const char *cp) { if (cp[0] == '0') { if (TOLOWER(cp[1]) == 'x' && isxdigit(cp[2])) return 16; else return 8; } else { return 10; } } |
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/** |
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* simple_strtoull - convert a string to an unsigned long long |
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* @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 */ |
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unsigned long long simple_strtoull(const char *cp, char **endp, unsigned int base) |
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{ |
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unsigned long long result = 0; |
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if (!base) base = simple_guess_base(cp); if (base == 16 && cp[0] == '0' && TOLOWER(cp[1]) == 'x') cp += 2; while (isxdigit(*cp)) { unsigned int value; value = isdigit(*cp) ? *cp - '0' : TOLOWER(*cp) - 'a' + 10; if (value >= base) break; result = result * base + value; |
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cp++; } if (endp) *endp = (char *)cp; |
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return result; } |
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EXPORT_SYMBOL(simple_strtoull); |
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/** |
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* simple_strtoul - convert a string to an unsigned long |
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* @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 */ |
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unsigned long simple_strtoul(const char *cp, char **endp, unsigned int base) |
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{ |
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return simple_strtoull(cp, endp, base); |
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} |
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EXPORT_SYMBOL(simple_strtoul); |
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/** |
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* simple_strtol - convert a string to a signed long |
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* @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 */ |
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long simple_strtol(const char *cp, char **endp, unsigned int base) |
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{ |
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if (*cp == '-') return -simple_strtoul(cp + 1, endp, base); |
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return simple_strtoul(cp, endp, base); |
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} |
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EXPORT_SYMBOL(simple_strtol); |
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/** * 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 */ |
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long long simple_strtoll(const char *cp, char **endp, unsigned int base) |
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{ |
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if (*cp == '-') |
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return -simple_strtoull(cp + 1, endp, base); |
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return simple_strtoull(cp, endp, base); |
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} |
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EXPORT_SYMBOL(simple_strtoll); |
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|
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/** * strict_strtoul - convert a string to an unsigned long strictly * @cp: The string to be converted * @base: The number base to use * @res: The converted result value * * strict_strtoul converts a string to an unsigned long only if the * string is really an unsigned long string, any string containing * any invalid char at the tail will be rejected and -EINVAL is returned, * only a newline char at the tail is acceptible because people generally * change a module parameter in the following way: * * echo 1024 > /sys/module/e1000/parameters/copybreak * * echo will append a newline to the tail. * * It returns 0 if conversion is successful and *res is set to the converted * value, otherwise it returns -EINVAL and *res is set to 0. * * simple_strtoul just ignores the successive invalid characters and * return the converted value of prefix part of the string. */ |
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int strict_strtoul(const char *cp, unsigned int base, unsigned long *res) { char *tail; unsigned long val; |
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*res = 0; |
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if (!*cp) |
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return -EINVAL; val = simple_strtoul(cp, &tail, base); |
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if (tail == cp) return -EINVAL; |
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if ((tail[0] == '\0') || (tail[0] == ' ' && tail[1] == '\0')) { |
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*res = val; return 0; } return -EINVAL; } EXPORT_SYMBOL(strict_strtoul); |
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/** * strict_strtol - convert a string to a long strictly * @cp: The string to be converted * @base: The number base to use * @res: The converted result value * * strict_strtol is similiar to strict_strtoul, but it allows the first * character of a string is '-'. * * It returns 0 if conversion is successful and *res is set to the converted * value, otherwise it returns -EINVAL and *res is set to 0. */ |
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int strict_strtol(const char *cp, unsigned int base, long *res) { int ret; if (*cp == '-') { ret = strict_strtoul(cp + 1, base, (unsigned long *)res); if (!ret) *res = -(*res); } else { ret = strict_strtoul(cp, base, (unsigned long *)res); } return ret; } EXPORT_SYMBOL(strict_strtol); |
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/** * strict_strtoull - convert a string to an unsigned long long strictly * @cp: The string to be converted * @base: The number base to use * @res: The converted result value * * strict_strtoull converts a string to an unsigned long long only if the * string is really an unsigned long long string, any string containing * any invalid char at the tail will be rejected and -EINVAL is returned, * only a newline char at the tail is acceptible because people generally * change a module parameter in the following way: * * echo 1024 > /sys/module/e1000/parameters/copybreak * * echo will append a newline to the tail of the string. * * It returns 0 if conversion is successful and *res is set to the converted * value, otherwise it returns -EINVAL and *res is set to 0. * * simple_strtoull just ignores the successive invalid characters and * return the converted value of prefix part of the string. */ |
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int strict_strtoull(const char *cp, unsigned int base, unsigned long long *res) { char *tail; unsigned long long val; |
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*res = 0; |
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if (!*cp) |
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return -EINVAL; val = simple_strtoull(cp, &tail, base); |
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if (tail == cp) return -EINVAL; |
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if ((tail[0] == '\0') || (tail[0] == ' ' && tail[1] == '\0')) { |
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*res = val; return 0; } return -EINVAL; } EXPORT_SYMBOL(strict_strtoull); |
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/** * strict_strtoll - convert a string to a long long strictly * @cp: The string to be converted * @base: The number base to use * @res: The converted result value * * strict_strtoll is similiar to strict_strtoull, but it allows the first * character of a string is '-'. * * It returns 0 if conversion is successful and *res is set to the converted * value, otherwise it returns -EINVAL and *res is set to 0. */ |
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int strict_strtoll(const char *cp, unsigned int base, long long *res) { int ret; if (*cp == '-') { ret = strict_strtoull(cp + 1, base, (unsigned long long *)res); if (!ret) *res = -(*res); } else { ret = strict_strtoull(cp, base, (unsigned long long *)res); } |
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return ret; } |
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EXPORT_SYMBOL(strict_strtoll); |
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static noinline_for_stack int skip_atoi(const char **s) |
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{ |
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int i = 0; |
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while (isdigit(**s)) i = i*10 + *((*s)++) - '0'; |
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return i; } |
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/* 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. */ |
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static noinline_for_stack char *put_dec_trunc(char *buf, unsigned q) |
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{ 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) |
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*buf++ = q + '0'; /* most sign. digit */ |
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} } } |
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return buf; } /* Same with if's removed. Always emits five digits */ |
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static noinline_for_stack char *put_dec_full(char *buf, unsigned q) |
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{ /* 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); |
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/* * 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) */ |
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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'; |
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return buf; } /* No inlining helps gcc to use registers better */ |
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static noinline_for_stack char *put_dec(char *buf, unsigned long long num) |
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{ while (1) { unsigned rem; if (num < 100000) return put_dec_trunc(buf, num); rem = do_div(num, 100000); buf = put_dec_full(buf, rem); } } |
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#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 */ |
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#define SMALL 32 /* use lowercase in hex (must be 32 == 0x20) */ #define SPECIAL 64 /* prefix hex with "0x", octal with "0" */ |
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enum format_type { FORMAT_TYPE_NONE, /* Just a string part */ |
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FORMAT_TYPE_WIDTH, |
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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, |
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FORMAT_TYPE_UBYTE, FORMAT_TYPE_BYTE, |
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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 { |
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u8 type; /* format_type enum */ |
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u8 flags; /* flags to number() */ |
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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 */ |
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}; |
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static noinline_for_stack char *number(char *buf, char *end, unsigned long long num, struct printf_spec spec) |
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{ |
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/* 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; |
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int need_pfx = ((spec.flags & SPECIAL) && spec.base != 10); |
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int i; |
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/* locase = 0 or 0x20. ORing digits or letters with 'locase' * produces same digits or (maybe lowercased) letters */ |
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locase = (spec.flags & SMALL); if (spec.flags & LEFT) spec.flags &= ~ZEROPAD; |
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sign = 0; |
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if (spec.flags & SIGN) { |
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if ((signed long long)num < 0) { |
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sign = '-'; |
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num = -(signed long long)num; |
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spec.field_width--; } else if (spec.flags & PLUS) { |
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sign = '+'; |
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spec.field_width--; } else if (spec.flags & SPACE) { |
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sign = ' '; |
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spec.field_width--; |
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} } |
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if (need_pfx) { |
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spec.field_width--; if (spec.base == 16) spec.field_width--; |
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} |
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/* generate full string in tmp[], in reverse order */ |
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i = 0; if (num == 0) |
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tmp[i++] = '0'; |
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/* Generic code, for any base: else do { |
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tmp[i++] = (digits[do_div(num,base)] | locase); |
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} while (num != 0); */ |
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else if (spec.base != 10) { /* 8 or 16 */ int mask = spec.base - 1; |
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int shift = 3; |
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if (spec.base == 16) shift = 4; |
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do { |
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tmp[i++] = (digits[((unsigned char)num) & mask] | locase); |
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num >>= shift; } while (num); |
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} else { /* base 10 */ i = put_dec(tmp, num) - tmp; } |
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/* printing 100 using %2d gives "100", not "00" */ |
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if (i > spec.precision) spec.precision = i; |
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/* leading space padding */ |
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spec.field_width -= spec.precision; if (!(spec.flags & (ZEROPAD+LEFT))) { |
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while (--spec.field_width >= 0) { |
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if (buf < end) |
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*buf = ' '; ++buf; } } |
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/* sign */ |
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if (sign) { |
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if (buf < end) |
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*buf = sign; ++buf; } |
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/* "0x" / "0" prefix */ if (need_pfx) { if (buf < end) *buf = '0'; ++buf; |
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if (spec.base == 16) { |
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if (buf < end) |
9b706aee7 x86: trivial prin... |
498 |
*buf = ('X' | locase); |
1da177e4c Linux-2.6.12-rc2 |
499 500 501 |
++buf; } } |
b39a73409 vsprintf.c: optim... |
502 |
/* zero or space padding */ |
fef20d9c1 vsprintf: unify t... |
503 504 505 |
if (!(spec.flags & LEFT)) { char c = (spec.flags & ZEROPAD) ? '0' : ' '; while (--spec.field_width >= 0) { |
f796937a0 [PATCH] Fix bound... |
506 |
if (buf < end) |
1da177e4c Linux-2.6.12-rc2 |
507 508 509 510 |
*buf = c; ++buf; } } |
b39a73409 vsprintf.c: optim... |
511 |
/* hmm even more zero padding? */ |
fef20d9c1 vsprintf: unify t... |
512 |
while (i <= --spec.precision) { |
f796937a0 [PATCH] Fix bound... |
513 |
if (buf < end) |
1da177e4c Linux-2.6.12-rc2 |
514 515 516 |
*buf = '0'; ++buf; } |
b39a73409 vsprintf.c: optim... |
517 518 |
/* actual digits of result */ while (--i >= 0) { |
f796937a0 [PATCH] Fix bound... |
519 |
if (buf < end) |
1da177e4c Linux-2.6.12-rc2 |
520 521 522 |
*buf = tmp[i]; ++buf; } |
b39a73409 vsprintf.c: optim... |
523 |
/* trailing space padding */ |
fef20d9c1 vsprintf: unify t... |
524 |
while (--spec.field_width >= 0) { |
f796937a0 [PATCH] Fix bound... |
525 |
if (buf < end) |
1da177e4c Linux-2.6.12-rc2 |
526 527 528 |
*buf = ' '; ++buf; } |
7b9186f5e vsprintf: give it... |
529 |
|
1da177e4c Linux-2.6.12-rc2 |
530 531 |
return buf; } |
cf3b429b0 vsprintf.c: use n... |
532 533 |
static noinline_for_stack char *string(char *buf, char *end, const char *s, struct printf_spec spec) |
0f9bfa569 vsprintf: split o... |
534 535 536 537 |
{ int len, i; if ((unsigned long)s < PAGE_SIZE) |
0f4f81dce vsprintf: factori... |
538 |
s = "(null)"; |
0f9bfa569 vsprintf: split o... |
539 |
|
fef20d9c1 vsprintf: unify t... |
540 |
len = strnlen(s, spec.precision); |
0f9bfa569 vsprintf: split o... |
541 |
|
fef20d9c1 vsprintf: unify t... |
542 543 |
if (!(spec.flags & LEFT)) { while (len < spec.field_width--) { |
0f9bfa569 vsprintf: split o... |
544 545 546 547 548 549 550 551 552 553 |
if (buf < end) *buf = ' '; ++buf; } } for (i = 0; i < len; ++i) { if (buf < end) *buf = *s; ++buf; ++s; } |
fef20d9c1 vsprintf: unify t... |
554 |
while (len < spec.field_width--) { |
0f9bfa569 vsprintf: split o... |
555 556 557 558 |
if (buf < end) *buf = ' '; ++buf; } |
7b9186f5e vsprintf: give it... |
559 |
|
0f9bfa569 vsprintf: split o... |
560 561 |
return buf; } |
cf3b429b0 vsprintf.c: use n... |
562 563 564 |
static noinline_for_stack char *symbol_string(char *buf, char *end, void *ptr, struct printf_spec spec, char ext) |
0fe1ef24f vsprintf: add sup... |
565 566 567 568 |
{ unsigned long value = (unsigned long) ptr; #ifdef CONFIG_KALLSYMS char sym[KSYM_SYMBOL_LEN]; |
91adcd2c4 vsprintf: add %ps... |
569 |
if (ext != 'f' && ext != 's') |
0c8b946e3 vsprintf: introdu... |
570 571 572 |
sprint_symbol(sym, value); else kallsyms_lookup(value, NULL, NULL, NULL, sym); |
7b9186f5e vsprintf: give it... |
573 |
|
fef20d9c1 vsprintf: unify t... |
574 |
return string(buf, end, sym, spec); |
0fe1ef24f vsprintf: add sup... |
575 |
#else |
7b9186f5e vsprintf: give it... |
576 |
spec.field_width = 2 * sizeof(void *); |
fef20d9c1 vsprintf: unify t... |
577 578 |
spec.flags |= SPECIAL | SMALL | ZEROPAD; spec.base = 16; |
7b9186f5e vsprintf: give it... |
579 |
|
fef20d9c1 vsprintf: unify t... |
580 |
return number(buf, end, value, spec); |
0fe1ef24f vsprintf: add sup... |
581 582 |
#endif } |
cf3b429b0 vsprintf.c: use n... |
583 584 585 |
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 ... |
586 587 |
{ #ifndef IO_RSRC_PRINTK_SIZE |
284053722 vsprintf: fix io/... |
588 |
#define IO_RSRC_PRINTK_SIZE 6 |
332d2e783 Implement %pR to ... |
589 590 591 |
#endif #ifndef MEM_RSRC_PRINTK_SIZE |
284053722 vsprintf: fix io/... |
592 |
#define MEM_RSRC_PRINTK_SIZE 10 |
332d2e783 Implement %pR to ... |
593 |
#endif |
4da0b66c6 vsprintf: move %p... |
594 |
static const struct printf_spec io_spec = { |
fef20d9c1 vsprintf: unify t... |
595 |
.base = 16, |
4da0b66c6 vsprintf: move %p... |
596 |
.field_width = IO_RSRC_PRINTK_SIZE, |
fef20d9c1 vsprintf: unify t... |
597 598 599 |
.precision = -1, .flags = SPECIAL | SMALL | ZEROPAD, }; |
4da0b66c6 vsprintf: move %p... |
600 601 602 603 604 605 |
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... |
606 607 608 609 610 611 |
static const struct printf_spec bus_spec = { .base = 16, .field_width = 2, .precision = -1, .flags = SMALL | ZEROPAD, }; |
4da0b66c6 vsprintf: move %p... |
612 |
static const struct printf_spec dec_spec = { |
c91d3376e vsprintf: add %pR... |
613 614 615 616 |
.base = 10, .precision = -1, .flags = 0, }; |
4da0b66c6 vsprintf: move %p... |
617 |
static const struct printf_spec str_spec = { |
fd95541e2 vsprintf: add %pR... |
618 619 620 621 |
.field_width = -1, .precision = 10, .flags = LEFT, }; |
4da0b66c6 vsprintf: move %p... |
622 |
static const struct printf_spec flag_spec = { |
fd95541e2 vsprintf: add %pR... |
623 624 625 626 |
.base = 16, .precision = -1, .flags = SPECIAL | SMALL, }; |
c7dabef8a vsprintf: use %pR... |
627 628 629 630 631 |
/* 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... |
632 |
#define DECODED_BUF_SIZE sizeof("[mem - 64bit pref window disabled]") |
c7dabef8a vsprintf: use %pR... |
633 634 635 |
#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 ... |
636 |
char *p = sym, *pend = sym + sizeof(sym); |
c7dabef8a vsprintf: use %pR... |
637 |
int decode = (fmt[0] == 'R') ? 1 : 0; |
4da0b66c6 vsprintf: move %p... |
638 |
const struct printf_spec *specp; |
332d2e783 Implement %pR to ... |
639 640 |
*p++ = '['; |
4da0b66c6 vsprintf: move %p... |
641 |
if (res->flags & IORESOURCE_IO) { |
c7dabef8a vsprintf: use %pR... |
642 |
p = string(p, pend, "io ", str_spec); |
4da0b66c6 vsprintf: move %p... |
643 644 |
specp = &io_spec; } else if (res->flags & IORESOURCE_MEM) { |
c7dabef8a vsprintf: use %pR... |
645 |
p = string(p, pend, "mem ", str_spec); |
4da0b66c6 vsprintf: move %p... |
646 647 |
specp = &mem_spec; } else if (res->flags & IORESOURCE_IRQ) { |
c7dabef8a vsprintf: use %pR... |
648 |
p = string(p, pend, "irq ", str_spec); |
4da0b66c6 vsprintf: move %p... |
649 650 |
specp = &dec_spec; } else if (res->flags & IORESOURCE_DMA) { |
c7dabef8a vsprintf: use %pR... |
651 |
p = string(p, pend, "dma ", str_spec); |
4da0b66c6 vsprintf: move %p... |
652 |
specp = &dec_spec; |
0f4050c7d resource: add bus... |
653 654 655 |
} else if (res->flags & IORESOURCE_BUS) { p = string(p, pend, "bus ", str_spec); specp = &bus_spec; |
4da0b66c6 vsprintf: move %p... |
656 |
} else { |
c7dabef8a vsprintf: use %pR... |
657 |
p = string(p, pend, "??? ", str_spec); |
4da0b66c6 vsprintf: move %p... |
658 |
specp = &mem_spec; |
c7dabef8a vsprintf: use %pR... |
659 |
decode = 0; |
fd95541e2 vsprintf: add %pR... |
660 |
} |
4da0b66c6 vsprintf: move %p... |
661 |
p = number(p, pend, res->start, *specp); |
c91d3376e vsprintf: add %pR... |
662 663 |
if (res->start != res->end) { *p++ = '-'; |
4da0b66c6 vsprintf: move %p... |
664 |
p = number(p, pend, res->end, *specp); |
c91d3376e vsprintf: add %pR... |
665 |
} |
c7dabef8a vsprintf: use %pR... |
666 |
if (decode) { |
fd95541e2 vsprintf: add %pR... |
667 668 669 670 |
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... |
671 672 |
if (res->flags & IORESOURCE_WINDOW) p = string(p, pend, " window", str_spec); |
fd95541e2 vsprintf: add %pR... |
673 674 |
if (res->flags & IORESOURCE_DISABLED) p = string(p, pend, " disabled", str_spec); |
c7dabef8a vsprintf: use %pR... |
675 676 677 |
} else { p = string(p, pend, " flags ", str_spec); p = number(p, pend, res->flags, flag_spec); |
fd95541e2 vsprintf: add %pR... |
678 |
} |
332d2e783 Implement %pR to ... |
679 |
*p++ = ']'; |
c7dabef8a vsprintf: use %pR... |
680 |
*p = '\0'; |
332d2e783 Implement %pR to ... |
681 |
|
fef20d9c1 vsprintf: unify t... |
682 |
return string(buf, end, sym, spec); |
332d2e783 Implement %pR to ... |
683 |
} |
cf3b429b0 vsprintf.c: use n... |
684 685 686 |
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... |
687 |
{ |
8a27f7c90 lib/vsprintf.c: A... |
688 |
char mac_addr[sizeof("xx:xx:xx:xx:xx:xx")]; |
dd45c9cf6 printk: add %pM f... |
689 690 |
char *p = mac_addr; int i; |
bc7259a2c lib/vsprintf.c: A... |
691 692 693 |
char separator; if (fmt[1] == 'F') { /* FDDI canonical format */ |
bc7259a2c lib/vsprintf.c: A... |
694 695 |
separator = '-'; } else { |
bc7259a2c lib/vsprintf.c: A... |
696 697 |
separator = ':'; } |
dd45c9cf6 printk: add %pM f... |
698 699 |
for (i = 0; i < 6; i++) { |
c8e000604 lib: Kill bit-rev... |
700 |
p = pack_hex_byte(p, addr[i]); |
8a27f7c90 lib/vsprintf.c: A... |
701 |
if (fmt[0] == 'M' && i != 5) |
bc7259a2c lib/vsprintf.c: A... |
702 |
*p++ = separator; |
dd45c9cf6 printk: add %pM f... |
703 704 |
} *p = '\0'; |
fef20d9c1 vsprintf: unify t... |
705 |
return string(buf, end, mac_addr, spec); |
dd45c9cf6 printk: add %pM f... |
706 |
} |
cf3b429b0 vsprintf.c: use n... |
707 708 |
static noinline_for_stack char *ip4_string(char *p, const u8 *addr, const char *fmt) |
8a27f7c90 lib/vsprintf.c: A... |
709 710 |
{ int i; |
0159f24ee lib/vsprintf.c: A... |
711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 |
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... |
736 737 |
for (i = 0; i < 4; i++) { char temp[3]; /* hold each IP quad in reverse order */ |
0159f24ee lib/vsprintf.c: A... |
738 |
int digits = put_dec_trunc(temp, addr[index]) - temp; |
8a27f7c90 lib/vsprintf.c: A... |
739 740 741 742 743 744 745 746 747 748 749 |
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... |
750 |
index += step; |
8a27f7c90 lib/vsprintf.c: A... |
751 |
} |
8a27f7c90 lib/vsprintf.c: A... |
752 |
*p = '\0'; |
7b9186f5e vsprintf: give it... |
753 |
|
8a27f7c90 lib/vsprintf.c: A... |
754 755 |
return p; } |
cf3b429b0 vsprintf.c: use n... |
756 757 |
static noinline_for_stack char *ip6_compressed_string(char *p, const char *addr) |
689afa7da printk: add %p6 f... |
758 |
{ |
7b9186f5e vsprintf: give it... |
759 |
int i, j, range; |
8a27f7c90 lib/vsprintf.c: A... |
760 761 762 763 |
unsigned char zerolength[8]; int longest = 1; int colonpos = -1; u16 word; |
7b9186f5e vsprintf: give it... |
764 |
u8 hi, lo; |
8a27f7c90 lib/vsprintf.c: A... |
765 |
bool needcolon = false; |
eb78cd26b lib/vsprintf.c: A... |
766 767 768 769 770 771 |
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... |
772 773 774 775 776 777 778 779 780 781 782 |
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... |
783 |
if (in6.s6_addr16[j] != 0) |
8a27f7c90 lib/vsprintf.c: A... |
784 785 786 787 788 789 790 791 792 793 |
break; zerolength[i]++; } } for (i = 0; i < range; i++) { if (zerolength[i] > longest) { longest = zerolength[i]; colonpos = i; } } |
689afa7da printk: add %p6 f... |
794 |
|
8a27f7c90 lib/vsprintf.c: A... |
795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 |
/* 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... |
810 |
word = ntohs(in6.s6_addr16[i]); |
8a27f7c90 lib/vsprintf.c: A... |
811 812 813 814 815 816 817 |
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 ... |
818 |
p = pack_hex_byte(p, lo); |
8a27f7c90 lib/vsprintf.c: A... |
819 |
} |
b5ff992b0 vsprintf: reduce ... |
820 |
else if (lo > 0x0f) |
8a27f7c90 lib/vsprintf.c: A... |
821 822 823 824 825 826 827 828 829 |
p = pack_hex_byte(p, lo); else *p++ = hex_asc_lo(lo); needcolon = true; } if (useIPv4) { if (needcolon) *p++ = ':'; |
0159f24ee lib/vsprintf.c: A... |
830 |
p = ip4_string(p, &in6.s6_addr[12], "I4"); |
8a27f7c90 lib/vsprintf.c: A... |
831 |
} |
8a27f7c90 lib/vsprintf.c: A... |
832 |
*p = '\0'; |
7b9186f5e vsprintf: give it... |
833 |
|
8a27f7c90 lib/vsprintf.c: A... |
834 835 |
return p; } |
cf3b429b0 vsprintf.c: use n... |
836 837 |
static noinline_for_stack char *ip6_string(char *p, const char *addr, const char *fmt) |
8a27f7c90 lib/vsprintf.c: A... |
838 839 |
{ int i; |
7b9186f5e vsprintf: give it... |
840 |
|
689afa7da printk: add %p6 f... |
841 |
for (i = 0; i < 8; i++) { |
eb78cd26b lib/vsprintf.c: A... |
842 843 |
p = pack_hex_byte(p, *addr++); p = pack_hex_byte(p, *addr++); |
8a27f7c90 lib/vsprintf.c: A... |
844 |
if (fmt[0] == 'I' && i != 7) |
689afa7da printk: add %p6 f... |
845 846 847 |
*p++ = ':'; } *p = '\0'; |
7b9186f5e vsprintf: give it... |
848 |
|
8a27f7c90 lib/vsprintf.c: A... |
849 850 |
return p; } |
cf3b429b0 vsprintf.c: use n... |
851 852 853 |
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... |
854 855 856 857 |
{ 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... |
858 |
ip6_compressed_string(ip6_addr, addr); |
8a27f7c90 lib/vsprintf.c: A... |
859 |
else |
eb78cd26b lib/vsprintf.c: A... |
860 |
ip6_string(ip6_addr, addr, fmt); |
689afa7da printk: add %p6 f... |
861 |
|
fef20d9c1 vsprintf: unify t... |
862 |
return string(buf, end, ip6_addr, spec); |
689afa7da printk: add %p6 f... |
863 |
} |
cf3b429b0 vsprintf.c: use n... |
864 865 866 |
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, ... |
867 |
{ |
8a27f7c90 lib/vsprintf.c: A... |
868 |
char ip4_addr[sizeof("255.255.255.255")]; |
4aa996066 printk: add %I4, ... |
869 |
|
0159f24ee lib/vsprintf.c: A... |
870 |
ip4_string(ip4_addr, addr, fmt); |
4aa996066 printk: add %I4, ... |
871 |
|
fef20d9c1 vsprintf: unify t... |
872 |
return string(buf, end, ip4_addr, spec); |
4aa996066 printk: add %I4, ... |
873 |
} |
cf3b429b0 vsprintf.c: use n... |
874 875 876 |
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... |
877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 |
{ 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); } |
4d8a743cd vsprintf: add inf... |
920 921 922 923 924 |
/* * 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 ... |
925 926 |
* Right now we handle: * |
0c8b946e3 vsprintf: introdu... |
927 928 |
* - 'F' For symbolic function descriptor pointers with offset * - 'f' For simple symbolic function names without offset |
0efb4d207 vsnprintf: remove... |
929 930 |
* - 'S' For symbolic direct pointers with offset * - 's' For symbolic direct pointers without offset |
c7dabef8a vsprintf: use %pR... |
931 932 |
* - '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... |
933 934 |
* - 'M' For a 6-byte MAC address, it prints the address in the * usual colon-separated hex notation |
8a27f7c90 lib/vsprintf.c: A... |
935 |
* - 'm' For a 6-byte MAC address, it prints the hex address without colons |
bc7259a2c lib/vsprintf.c: A... |
936 |
* - 'MF' For a 6-byte MAC FDDI address, it prints the address |
c8e000604 lib: Kill bit-rev... |
937 |
* with a dash-separated hex notation |
8a27f7c90 lib/vsprintf.c: A... |
938 939 940 941 942 943 |
* - '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... |
944 |
* - '[Ii]4[hnbl]' IPv4 addresses in host, network, big or little endian order |
8a27f7c90 lib/vsprintf.c: A... |
945 |
* - 'I6c' for IPv6 addresses printed as specified by |
3f4724027 vsnprintf: fix re... |
946 |
* http://tools.ietf.org/html/draft-ietf-6man-text-addr-representation-00 |
9ac6e44ee lib/vsprintf.c: a... |
947 948 949 950 951 952 953 954 955 956 957 |
* - '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... |
958 959 960 961 962 |
* - '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. |
9ac6e44ee lib/vsprintf.c: a... |
963 |
* |
332d2e783 Implement %pR to ... |
964 965 966 |
* 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... |
967 |
*/ |
cf3b429b0 vsprintf.c: use n... |
968 969 970 |
static noinline_for_stack char *pointer(const char *fmt, char *buf, char *end, void *ptr, struct printf_spec spec) |
78a8bf69b vsprintf: split o... |
971 |
{ |
d97106ab5 Make %p print '(n... |
972 |
if (!ptr) |
fef20d9c1 vsprintf: unify t... |
973 |
return string(buf, end, "(null)", spec); |
d97106ab5 Make %p print '(n... |
974 |
|
0fe1ef24f vsprintf: add sup... |
975 976 |
switch (*fmt) { case 'F': |
0c8b946e3 vsprintf: introdu... |
977 |
case 'f': |
0fe1ef24f vsprintf: add sup... |
978 979 980 |
ptr = dereference_function_descriptor(ptr); /* Fallthrough */ case 'S': |
9ac6e44ee lib/vsprintf.c: a... |
981 |
case 's': |
0c8b946e3 vsprintf: introdu... |
982 |
return symbol_string(buf, end, ptr, spec, *fmt); |
332d2e783 Implement %pR to ... |
983 |
case 'R': |
c7dabef8a vsprintf: use %pR... |
984 |
case 'r': |
fd95541e2 vsprintf: add %pR... |
985 |
return resource_string(buf, end, ptr, spec, fmt); |
8a27f7c90 lib/vsprintf.c: A... |
986 987 |
case 'M': /* Colon separated: 00:01:02:03:04:05 */ case 'm': /* Contiguous: 000102030405 */ |
bc7259a2c lib/vsprintf.c: A... |
988 |
/* [mM]F (FDDI, bit reversed) */ |
8a27f7c90 lib/vsprintf.c: A... |
989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 |
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... |
1005 |
break; |
9ac6e44ee lib/vsprintf.c: a... |
1006 1007 |
case 'U': return uuid_string(buf, end, ptr, spec, fmt); |
7db6f5fb6 vsprintf: Recursi... |
1008 1009 1010 1011 |
case 'V': return buf + vsnprintf(buf, end - buf, ((struct va_format *)ptr)->fmt, *(((struct va_format *)ptr)->va)); |
fef20d9c1 vsprintf: unify t... |
1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 |
} spec.flags |= SMALL; if (spec.field_width == -1) { spec.field_width = 2*sizeof(void *); 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... |
1043 1044 |
static noinline_for_stack int format_decode(const char *fmt, struct printf_spec *spec) |
fef20d9c1 vsprintf: unify t... |
1045 1046 |
{ const char *start = fmt; |
fef20d9c1 vsprintf: unify t... |
1047 1048 |
/* we finished early by reading the field width */ |
ed681a91a vsprintf: unify t... |
1049 |
if (spec->type == FORMAT_TYPE_WIDTH) { |
fef20d9c1 vsprintf: unify t... |
1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 |
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... |
1107 |
spec->type = FORMAT_TYPE_WIDTH; |
fef20d9c1 vsprintf: unify t... |
1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 |
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... |
1122 |
spec->type = FORMAT_TYPE_PRECISION; |
fef20d9c1 vsprintf: unify t... |
1123 1124 1125 1126 1127 1128 1129 |
return ++fmt - start; } } qualifier: /* get the conversion qualifier */ spec->qualifier = -1; |
08562cb27 vsprintf: use TOL... |
1130 1131 |
if (*fmt == 'h' || TOLOWER(*fmt) == 'l' || TOLOWER(*fmt) == 'z' || *fmt == 't') { |
a4e94ef0d printk: add suppo... |
1132 1133 1134 1135 1136 1137 1138 1139 1140 |
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... |
1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 |
} } /* 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... |
1182 |
spec->flags |= SIGN; |
fef20d9c1 vsprintf: unify t... |
1183 |
case 'u': |
4aa996066 printk: add %I4, ... |
1184 |
break; |
fef20d9c1 vsprintf: unify t... |
1185 1186 1187 1188 |
default: spec->type = FORMAT_TYPE_INVALID; return fmt - start; |
0fe1ef24f vsprintf: add sup... |
1189 |
} |
fef20d9c1 vsprintf: unify t... |
1190 1191 1192 1193 |
if (spec->qualifier == 'L') spec->type = FORMAT_TYPE_LONG_LONG; else if (spec->qualifier == 'l') { |
39e874f8a vsprintf: fix bug... |
1194 |
if (spec->flags & SIGN) |
fef20d9c1 vsprintf: unify t... |
1195 1196 1197 |
spec->type = FORMAT_TYPE_LONG; else spec->type = FORMAT_TYPE_ULONG; |
08562cb27 vsprintf: use TOL... |
1198 |
} else if (TOLOWER(spec->qualifier) == 'z') { |
fef20d9c1 vsprintf: unify t... |
1199 1200 1201 |
spec->type = FORMAT_TYPE_SIZE_T; } else if (spec->qualifier == 't') { spec->type = FORMAT_TYPE_PTRDIFF; |
a4e94ef0d printk: add suppo... |
1202 1203 1204 1205 1206 |
} else if (spec->qualifier == 'H') { if (spec->flags & SIGN) spec->type = FORMAT_TYPE_BYTE; else spec->type = FORMAT_TYPE_UBYTE; |
fef20d9c1 vsprintf: unify t... |
1207 |
} else if (spec->qualifier == 'h') { |
39e874f8a vsprintf: fix bug... |
1208 |
if (spec->flags & SIGN) |
fef20d9c1 vsprintf: unify t... |
1209 1210 1211 1212 |
spec->type = FORMAT_TYPE_SHORT; else spec->type = FORMAT_TYPE_USHORT; } else { |
39e874f8a vsprintf: fix bug... |
1213 |
if (spec->flags & SIGN) |
fef20d9c1 vsprintf: unify t... |
1214 1215 1216 |
spec->type = FORMAT_TYPE_INT; else spec->type = FORMAT_TYPE_UINT; |
78a8bf69b vsprintf: split o... |
1217 |
} |
fef20d9c1 vsprintf: unify t... |
1218 1219 |
return ++fmt - start; |
78a8bf69b vsprintf: split o... |
1220 |
} |
1da177e4c Linux-2.6.12-rc2 |
1221 1222 1223 1224 1225 1226 1227 |
/** * 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... |
1228 |
* This function follows C99 vsnprintf, but has some extensions: |
91adcd2c4 vsprintf: add %ps... |
1229 1230 |
* %pS output the name of a text symbol with offset * %ps output the name of a text symbol without offset |
0c8b946e3 vsprintf: introdu... |
1231 1232 |
* %pF output the name of a function pointer with its offset * %pf output the name of a function pointer without its offset |
8a79503aa lib/vsprintf.c: d... |
1233 1234 1235 1236 1237 1238 1239 1240 1241 |
* %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 * %pI6c print an IPv6 address as specified by |
3f4724027 vsnprintf: fix re... |
1242 |
* http://tools.ietf.org/html/draft-ietf-6man-text-addr-representation-00 |
8a79503aa lib/vsprintf.c: d... |
1243 1244 |
* %pU[bBlL] print a UUID/GUID in big or little endian using lower or upper * case. |
0efb4d207 vsnprintf: remove... |
1245 |
* %n is ignored |
20036fdca Add kerneldoc doc... |
1246 |
* |
1da177e4c Linux-2.6.12-rc2 |
1247 1248 1249 1250 |
* 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 ... |
1251 |
* (not including the trailing '\0'), use vscnprintf(). If the |
1da177e4c Linux-2.6.12-rc2 |
1252 1253 1254 1255 |
* return is greater than or equal to @size, the resulting * string is truncated. * * Call this function if you are already dealing with a va_list. |
72fd4a35a [PATCH] Numerous ... |
1256 |
* You probably want snprintf() instead. |
1da177e4c Linux-2.6.12-rc2 |
1257 1258 1259 |
*/ int vsnprintf(char *buf, size_t size, const char *fmt, va_list args) { |
1da177e4c Linux-2.6.12-rc2 |
1260 |
unsigned long long num; |
d4be151b2 vsprintf: move lo... |
1261 |
char *str, *end; |
fef20d9c1 vsprintf: unify t... |
1262 |
struct printf_spec spec = {0}; |
1da177e4c Linux-2.6.12-rc2 |
1263 |
|
f796937a0 [PATCH] Fix bound... |
1264 1265 |
/* Reject out-of-range values early. Large positive sizes are used for unknown buffer sizes. */ |
2f30b1f9e vsprintf: use WAR... |
1266 |
if (WARN_ON_ONCE((int) size < 0)) |
1da177e4c Linux-2.6.12-rc2 |
1267 |
return 0; |
1da177e4c Linux-2.6.12-rc2 |
1268 1269 |
str = buf; |
f796937a0 [PATCH] Fix bound... |
1270 |
end = buf + size; |
1da177e4c Linux-2.6.12-rc2 |
1271 |
|
f796937a0 [PATCH] Fix bound... |
1272 1273 1274 1275 |
/* Make sure end is always >= buf */ if (end < buf) { end = ((void *)-1); size = end - buf; |
1da177e4c Linux-2.6.12-rc2 |
1276 |
} |
fef20d9c1 vsprintf: unify t... |
1277 1278 |
while (*fmt) { const char *old_fmt = fmt; |
d4be151b2 vsprintf: move lo... |
1279 |
int read = format_decode(fmt, &spec); |
1da177e4c Linux-2.6.12-rc2 |
1280 |
|
fef20d9c1 vsprintf: unify t... |
1281 |
fmt += read; |
1da177e4c Linux-2.6.12-rc2 |
1282 |
|
fef20d9c1 vsprintf: unify t... |
1283 1284 1285 1286 1287 1288 1289 |
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 |
1290 |
} |
fef20d9c1 vsprintf: unify t... |
1291 1292 |
str += read; break; |
1da177e4c Linux-2.6.12-rc2 |
1293 |
} |
ed681a91a vsprintf: unify t... |
1294 |
case FORMAT_TYPE_WIDTH: |
fef20d9c1 vsprintf: unify t... |
1295 1296 |
spec.field_width = va_arg(args, int); break; |
1da177e4c Linux-2.6.12-rc2 |
1297 |
|
fef20d9c1 vsprintf: unify t... |
1298 1299 1300 |
case FORMAT_TYPE_PRECISION: spec.precision = va_arg(args, int); break; |
1da177e4c Linux-2.6.12-rc2 |
1301 |
|
d4be151b2 vsprintf: move lo... |
1302 1303 |
case FORMAT_TYPE_CHAR: { char c; |
fef20d9c1 vsprintf: unify t... |
1304 1305 |
if (!(spec.flags & LEFT)) { while (--spec.field_width > 0) { |
f796937a0 [PATCH] Fix bound... |
1306 |
if (str < end) |
1da177e4c Linux-2.6.12-rc2 |
1307 1308 |
*str = ' '; ++str; |
1da177e4c Linux-2.6.12-rc2 |
1309 |
|
fef20d9c1 vsprintf: unify t... |
1310 1311 1312 1313 1314 1315 1316 |
} } c = (unsigned char) va_arg(args, int); if (str < end) *str = c; ++str; while (--spec.field_width > 0) { |
f796937a0 [PATCH] Fix bound... |
1317 |
if (str < end) |
fef20d9c1 vsprintf: unify t... |
1318 |
*str = ' '; |
1da177e4c Linux-2.6.12-rc2 |
1319 |
++str; |
fef20d9c1 vsprintf: unify t... |
1320 1321 |
} break; |
d4be151b2 vsprintf: move lo... |
1322 |
} |
1da177e4c Linux-2.6.12-rc2 |
1323 |
|
fef20d9c1 vsprintf: unify t... |
1324 1325 1326 |
case FORMAT_TYPE_STR: str = string(str, end, va_arg(args, char *), spec); break; |
1da177e4c Linux-2.6.12-rc2 |
1327 |
|
fef20d9c1 vsprintf: unify t... |
1328 1329 1330 1331 1332 1333 |
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 |
1334 |
|
fef20d9c1 vsprintf: unify t... |
1335 1336 1337 1338 1339 |
case FORMAT_TYPE_PERCENT_CHAR: if (str < end) *str = '%'; ++str; break; |
1da177e4c Linux-2.6.12-rc2 |
1340 |
|
fef20d9c1 vsprintf: unify t... |
1341 1342 1343 1344 |
case FORMAT_TYPE_INVALID: if (str < end) *str = '%'; ++str; |
fef20d9c1 vsprintf: unify t... |
1345 1346 1347 |
break; case FORMAT_TYPE_NRCHARS: { |
ef0658f3d vsprintf.c: Reduc... |
1348 |
u8 qualifier = spec.qualifier; |
fef20d9c1 vsprintf: unify t... |
1349 1350 1351 1352 |
if (qualifier == 'l') { long *ip = va_arg(args, long *); *ip = (str - buf); |
08562cb27 vsprintf: use TOL... |
1353 |
} else if (TOLOWER(qualifier) == 'z') { |
fef20d9c1 vsprintf: unify t... |
1354 1355 1356 1357 1358 1359 1360 |
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 |
1361 |
} |
fef20d9c1 vsprintf: unify t... |
1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 |
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... |
1380 1381 1382 1383 1384 1385 |
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... |
1386 1387 1388 1389 1390 1391 |
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... |
1392 1393 |
case FORMAT_TYPE_INT: num = (int) va_arg(args, int); |
fef20d9c1 vsprintf: unify t... |
1394 1395 1396 1397 1398 1399 |
break; default: num = va_arg(args, unsigned int); } str = number(str, end, num, spec); |
1da177e4c Linux-2.6.12-rc2 |
1400 |
} |
1da177e4c Linux-2.6.12-rc2 |
1401 |
} |
fef20d9c1 vsprintf: unify t... |
1402 |
|
f796937a0 [PATCH] Fix bound... |
1403 1404 1405 1406 |
if (size > 0) { if (str < end) *str = '\0'; else |
0a6047eef Fix vsnprintf off... |
1407 |
end[-1] = '\0'; |
f796937a0 [PATCH] Fix bound... |
1408 |
} |
fef20d9c1 vsprintf: unify t... |
1409 |
|
f796937a0 [PATCH] Fix bound... |
1410 |
/* the trailing null byte doesn't count towards the total */ |
1da177e4c Linux-2.6.12-rc2 |
1411 |
return str-buf; |
fef20d9c1 vsprintf: unify t... |
1412 |
|
1da177e4c Linux-2.6.12-rc2 |
1413 |
} |
1da177e4c Linux-2.6.12-rc2 |
1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 |
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 * the @buf not including the trailing '\0'. If @size is <= 0 the function * returns 0. * * Call this function if you are already dealing with a va_list. |
72fd4a35a [PATCH] Numerous ... |
1428 |
* You probably want scnprintf() instead. |
20036fdca Add kerneldoc doc... |
1429 1430 |
* * See the vsnprintf() documentation for format string extensions over C99. |
1da177e4c Linux-2.6.12-rc2 |
1431 1432 1433 1434 |
*/ int vscnprintf(char *buf, size_t size, const char *fmt, va_list args) { int i; |
7b9186f5e vsprintf: give it... |
1435 |
i = vsnprintf(buf, size, fmt, args); |
1da177e4c Linux-2.6.12-rc2 |
1436 1437 |
return (i >= size) ? (size - 1) : i; } |
1da177e4c Linux-2.6.12-rc2 |
1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 |
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... |
1451 1452 |
* * See the vsnprintf() documentation for format string extensions over C99. |
1da177e4c Linux-2.6.12-rc2 |
1453 |
*/ |
7b9186f5e vsprintf: give it... |
1454 |
int snprintf(char *buf, size_t size, const char *fmt, ...) |
1da177e4c Linux-2.6.12-rc2 |
1455 1456 1457 1458 1459 |
{ va_list args; int i; va_start(args, fmt); |
7b9186f5e vsprintf: give it... |
1460 |
i = vsnprintf(buf, size, fmt, args); |
1da177e4c Linux-2.6.12-rc2 |
1461 |
va_end(args); |
7b9186f5e vsprintf: give it... |
1462 |
|
1da177e4c Linux-2.6.12-rc2 |
1463 1464 |
return i; } |
1da177e4c Linux-2.6.12-rc2 |
1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 |
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 |
ea6f3281a [PATCH] scnprintf... |
1475 |
* the trailing '\0'. If @size is <= 0 the function returns 0. |
1da177e4c Linux-2.6.12-rc2 |
1476 |
*/ |
7b9186f5e vsprintf: give it... |
1477 |
int scnprintf(char *buf, size_t size, const char *fmt, ...) |
1da177e4c Linux-2.6.12-rc2 |
1478 1479 1480 1481 1482 1483 1484 |
{ va_list args; int i; va_start(args, fmt); i = vsnprintf(buf, size, fmt, args); va_end(args); |
7b9186f5e vsprintf: give it... |
1485 |
|
1da177e4c Linux-2.6.12-rc2 |
1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 |
return (i >= size) ? (size - 1) : i; } 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 ... |
1497 |
* into @buf. Use vsnprintf() or vscnprintf() in order to avoid |
1da177e4c Linux-2.6.12-rc2 |
1498 1499 1500 |
* buffer overflows. * * Call this function if you are already dealing with a va_list. |
72fd4a35a [PATCH] Numerous ... |
1501 |
* You probably want sprintf() instead. |
20036fdca Add kerneldoc doc... |
1502 1503 |
* * See the vsnprintf() documentation for format string extensions over C99. |
1da177e4c Linux-2.6.12-rc2 |
1504 1505 1506 1507 1508 |
*/ int vsprintf(char *buf, const char *fmt, va_list args) { return vsnprintf(buf, INT_MAX, fmt, args); } |
1da177e4c Linux-2.6.12-rc2 |
1509 1510 1511 1512 1513 1514 1515 1516 1517 |
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 ... |
1518 |
* into @buf. Use snprintf() or scnprintf() in order to avoid |
1da177e4c Linux-2.6.12-rc2 |
1519 |
* buffer overflows. |
20036fdca Add kerneldoc doc... |
1520 1521 |
* * See the vsnprintf() documentation for format string extensions over C99. |
1da177e4c Linux-2.6.12-rc2 |
1522 |
*/ |
7b9186f5e vsprintf: give it... |
1523 |
int sprintf(char *buf, const char *fmt, ...) |
1da177e4c Linux-2.6.12-rc2 |
1524 1525 1526 1527 1528 |
{ va_list args; int i; va_start(args, fmt); |
7b9186f5e vsprintf: give it... |
1529 |
i = vsnprintf(buf, INT_MAX, fmt, args); |
1da177e4c Linux-2.6.12-rc2 |
1530 |
va_end(args); |
7b9186f5e vsprintf: give it... |
1531 |
|
1da177e4c Linux-2.6.12-rc2 |
1532 1533 |
return i; } |
1da177e4c Linux-2.6.12-rc2 |
1534 |
EXPORT_SYMBOL(sprintf); |
4370aa4aa vsprintf: add bin... |
1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 |
#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... |
1561 |
struct printf_spec spec = {0}; |
4370aa4aa vsprintf: add bin... |
1562 |
char *str, *end; |
4370aa4aa vsprintf: add bin... |
1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 |
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... |
1586 |
while (*fmt) { |
d4be151b2 vsprintf: move lo... |
1587 |
int read = format_decode(fmt, &spec); |
4370aa4aa vsprintf: add bin... |
1588 |
|
fef20d9c1 vsprintf: unify t... |
1589 |
fmt += read; |
4370aa4aa vsprintf: add bin... |
1590 |
|
fef20d9c1 vsprintf: unify t... |
1591 1592 |
switch (spec.type) { case FORMAT_TYPE_NONE: |
d4be151b2 vsprintf: move lo... |
1593 1594 |
case FORMAT_TYPE_INVALID: case FORMAT_TYPE_PERCENT_CHAR: |
fef20d9c1 vsprintf: unify t... |
1595 |
break; |
ed681a91a vsprintf: unify t... |
1596 |
case FORMAT_TYPE_WIDTH: |
fef20d9c1 vsprintf: unify t... |
1597 1598 1599 1600 1601 |
case FORMAT_TYPE_PRECISION: save_arg(int); break; case FORMAT_TYPE_CHAR: |
4370aa4aa vsprintf: add bin... |
1602 |
save_arg(char); |
fef20d9c1 vsprintf: unify t... |
1603 1604 1605 |
break; case FORMAT_TYPE_STR: { |
4370aa4aa vsprintf: add bin... |
1606 1607 |
const char *save_str = va_arg(args, char *); size_t len; |
6c3566341 vsprintf: pre-cal... |
1608 |
|
4370aa4aa vsprintf: add bin... |
1609 1610 |
if ((unsigned long)save_str > (unsigned long)-PAGE_SIZE || (unsigned long)save_str < PAGE_SIZE) |
0f4f81dce vsprintf: factori... |
1611 |
save_str = "(null)"; |
6c3566341 vsprintf: pre-cal... |
1612 1613 1614 1615 |
len = strlen(save_str) + 1; if (str + len < end) memcpy(str, save_str, len); str += len; |
fef20d9c1 vsprintf: unify t... |
1616 |
break; |
4370aa4aa vsprintf: add bin... |
1617 |
} |
fef20d9c1 vsprintf: unify t... |
1618 1619 |
case FORMAT_TYPE_PTR: |
4370aa4aa vsprintf: add bin... |
1620 1621 |
save_arg(void *); /* skip all alphanumeric pointer suffixes */ |
fef20d9c1 vsprintf: unify t... |
1622 |
while (isalnum(*fmt)) |
4370aa4aa vsprintf: add bin... |
1623 |
fmt++; |
fef20d9c1 vsprintf: unify t... |
1624 |
break; |
fef20d9c1 vsprintf: unify t... |
1625 |
case FORMAT_TYPE_NRCHARS: { |
4370aa4aa vsprintf: add bin... |
1626 |
/* skip %n 's argument */ |
ef0658f3d vsprintf.c: Reduc... |
1627 |
u8 qualifier = spec.qualifier; |
4370aa4aa vsprintf: add bin... |
1628 1629 1630 |
void *skip_arg; if (qualifier == 'l') skip_arg = va_arg(args, long *); |
08562cb27 vsprintf: use TOL... |
1631 |
else if (TOLOWER(qualifier) == 'z') |
4370aa4aa vsprintf: add bin... |
1632 1633 1634 |
skip_arg = va_arg(args, size_t *); else skip_arg = va_arg(args, int *); |
fef20d9c1 vsprintf: unify t... |
1635 |
break; |
4370aa4aa vsprintf: add bin... |
1636 |
} |
fef20d9c1 vsprintf: unify t... |
1637 1638 1639 1640 1641 |
default: switch (spec.type) { case FORMAT_TYPE_LONG_LONG: |
4370aa4aa vsprintf: add bin... |
1642 |
save_arg(long long); |
fef20d9c1 vsprintf: unify t... |
1643 1644 1645 |
break; case FORMAT_TYPE_ULONG: case FORMAT_TYPE_LONG: |
4370aa4aa vsprintf: add bin... |
1646 |
save_arg(unsigned long); |
fef20d9c1 vsprintf: unify t... |
1647 1648 |
break; case FORMAT_TYPE_SIZE_T: |
4370aa4aa vsprintf: add bin... |
1649 |
save_arg(size_t); |
fef20d9c1 vsprintf: unify t... |
1650 1651 |
break; case FORMAT_TYPE_PTRDIFF: |
4370aa4aa vsprintf: add bin... |
1652 |
save_arg(ptrdiff_t); |
fef20d9c1 vsprintf: unify t... |
1653 |
break; |
a4e94ef0d printk: add suppo... |
1654 1655 1656 1657 |
case FORMAT_TYPE_UBYTE: case FORMAT_TYPE_BYTE: save_arg(char); break; |
fef20d9c1 vsprintf: unify t... |
1658 1659 |
case FORMAT_TYPE_USHORT: case FORMAT_TYPE_SHORT: |
4370aa4aa vsprintf: add bin... |
1660 |
save_arg(short); |
fef20d9c1 vsprintf: unify t... |
1661 1662 |
break; default: |
4370aa4aa vsprintf: add bin... |
1663 |
save_arg(int); |
fef20d9c1 vsprintf: unify t... |
1664 |
} |
4370aa4aa vsprintf: add bin... |
1665 1666 |
} } |
fef20d9c1 vsprintf: unify t... |
1667 |
|
7b9186f5e vsprintf: give it... |
1668 |
return (u32 *)(PTR_ALIGN(str, sizeof(u32))) - bin_buf; |
fef20d9c1 vsprintf: unify t... |
1669 |
#undef save_arg |
4370aa4aa vsprintf: add bin... |
1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 |
} 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... |
1685 |
* see vsnprintf comment for details. |
4370aa4aa vsprintf: add bin... |
1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 |
* * 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... |
1697 |
struct printf_spec spec = {0}; |
d4be151b2 vsprintf: move lo... |
1698 1699 |
char *str, *end; const char *args = (const char *)bin_buf; |
4370aa4aa vsprintf: add bin... |
1700 |
|
2f30b1f9e vsprintf: use WAR... |
1701 |
if (WARN_ON_ONCE((int) size < 0)) |
4370aa4aa vsprintf: add bin... |
1702 |
return 0; |
4370aa4aa vsprintf: add bin... |
1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 |
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... |
1727 |
while (*fmt) { |
fef20d9c1 vsprintf: unify t... |
1728 |
const char *old_fmt = fmt; |
d4be151b2 vsprintf: move lo... |
1729 |
int read = format_decode(fmt, &spec); |
4370aa4aa vsprintf: add bin... |
1730 |
|
fef20d9c1 vsprintf: unify t... |
1731 |
fmt += read; |
4370aa4aa vsprintf: add bin... |
1732 |
|
fef20d9c1 vsprintf: unify t... |
1733 1734 1735 1736 1737 1738 1739 |
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... |
1740 |
} |
fef20d9c1 vsprintf: unify t... |
1741 1742 |
str += read; break; |
4370aa4aa vsprintf: add bin... |
1743 |
} |
ed681a91a vsprintf: unify t... |
1744 |
case FORMAT_TYPE_WIDTH: |
fef20d9c1 vsprintf: unify t... |
1745 1746 |
spec.field_width = get_arg(int); break; |
4370aa4aa vsprintf: add bin... |
1747 |
|
fef20d9c1 vsprintf: unify t... |
1748 1749 1750 |
case FORMAT_TYPE_PRECISION: spec.precision = get_arg(int); break; |
4370aa4aa vsprintf: add bin... |
1751 |
|
d4be151b2 vsprintf: move lo... |
1752 1753 |
case FORMAT_TYPE_CHAR: { char c; |
fef20d9c1 vsprintf: unify t... |
1754 1755 |
if (!(spec.flags & LEFT)) { while (--spec.field_width > 0) { |
4370aa4aa vsprintf: add bin... |
1756 1757 1758 1759 1760 1761 1762 1763 1764 |
if (str < end) *str = ' '; ++str; } } c = (unsigned char) get_arg(char); if (str < end) *str = c; ++str; |
fef20d9c1 vsprintf: unify t... |
1765 |
while (--spec.field_width > 0) { |
4370aa4aa vsprintf: add bin... |
1766 1767 1768 1769 |
if (str < end) *str = ' '; ++str; } |
fef20d9c1 vsprintf: unify t... |
1770 |
break; |
d4be151b2 vsprintf: move lo... |
1771 |
} |
4370aa4aa vsprintf: add bin... |
1772 |
|
fef20d9c1 vsprintf: unify t... |
1773 |
case FORMAT_TYPE_STR: { |
4370aa4aa vsprintf: add bin... |
1774 |
const char *str_arg = args; |
d4be151b2 vsprintf: move lo... |
1775 |
args += strlen(str_arg) + 1; |
fef20d9c1 vsprintf: unify t... |
1776 1777 |
str = string(str, end, (char *)str_arg, spec); break; |
4370aa4aa vsprintf: add bin... |
1778 |
} |
fef20d9c1 vsprintf: unify t... |
1779 1780 1781 |
case FORMAT_TYPE_PTR: str = pointer(fmt+1, str, end, get_arg(void *), spec); while (isalnum(*fmt)) |
4370aa4aa vsprintf: add bin... |
1782 |
fmt++; |
fef20d9c1 vsprintf: unify t... |
1783 |
break; |
4370aa4aa vsprintf: add bin... |
1784 |
|
fef20d9c1 vsprintf: unify t... |
1785 |
case FORMAT_TYPE_PERCENT_CHAR: |
fef20d9c1 vsprintf: unify t... |
1786 |
case FORMAT_TYPE_INVALID: |
4370aa4aa vsprintf: add bin... |
1787 1788 1789 |
if (str < end) *str = '%'; ++str; |
fef20d9c1 vsprintf: unify t... |
1790 1791 1792 1793 1794 |
break; case FORMAT_TYPE_NRCHARS: /* skip */ break; |
d4be151b2 vsprintf: move lo... |
1795 1796 |
default: { unsigned long long num; |
fef20d9c1 vsprintf: unify t... |
1797 1798 1799 1800 1801 1802 |
switch (spec.type) { case FORMAT_TYPE_LONG_LONG: num = get_arg(long long); break; case FORMAT_TYPE_ULONG: |
fef20d9c1 vsprintf: unify t... |
1803 1804 1805 1806 1807 1808 1809 1810 1811 |
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... |
1812 1813 1814 1815 1816 1817 |
case FORMAT_TYPE_UBYTE: num = get_arg(unsigned char); break; case FORMAT_TYPE_BYTE: num = get_arg(signed char); break; |
fef20d9c1 vsprintf: unify t... |
1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 |
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... |
1832 1833 1834 |
} /* default: */ } /* switch(spec.type) */ } /* while(*fmt) */ |
fef20d9c1 vsprintf: unify t... |
1835 |
|
4370aa4aa vsprintf: add bin... |
1836 1837 1838 1839 1840 1841 |
if (size > 0) { if (str < end) *str = '\0'; else end[-1] = '\0'; } |
fef20d9c1 vsprintf: unify t... |
1842 |
|
4370aa4aa vsprintf: add bin... |
1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 |
#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... |
1868 |
|
4370aa4aa vsprintf: add bin... |
1869 1870 1871 1872 1873 |
return ret; } EXPORT_SYMBOL_GPL(bprintf); #endif /* CONFIG_BINARY_PRINTF */ |
1da177e4c Linux-2.6.12-rc2 |
1874 1875 1876 1877 1878 1879 |
/** * vsscanf - Unformat a buffer into a list of arguments * @buf: input buffer * @fmt: format of buffer * @args: arguments */ |
7b9186f5e vsprintf: give it... |
1880 |
int vsscanf(const char *buf, const char *fmt, va_list args) |
1da177e4c Linux-2.6.12-rc2 |
1881 1882 1883 1884 1885 |
{ const char *str = buf; char *next; char digit; int num = 0; |
ef0658f3d vsprintf.c: Reduc... |
1886 1887 1888 |
u8 qualifier; u8 base; s16 field_width; |
d4be151b2 vsprintf: move lo... |
1889 |
bool is_sign; |
1da177e4c Linux-2.6.12-rc2 |
1890 |
|
7b9186f5e vsprintf: give it... |
1891 |
while (*fmt && *str) { |
1da177e4c Linux-2.6.12-rc2 |
1892 1893 1894 1895 1896 |
/* 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... |
1897 1898 |
fmt = skip_spaces(++fmt); str = skip_spaces(str); |
1da177e4c Linux-2.6.12-rc2 |
1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 |
} /* 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... |
1911 |
|
1da177e4c Linux-2.6.12-rc2 |
1912 1913 1914 1915 |
/* skip this conversion. * advance both strings to next white space */ if (*fmt == '*') { |
8fccae2c9 sscanf(): fix %*s%n |
1916 |
while (!isspace(*fmt) && *fmt != '%' && *fmt) |
1da177e4c Linux-2.6.12-rc2 |
1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 |
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; |
08562cb27 vsprintf: use TOL... |
1930 1931 |
if (*fmt == 'h' || TOLOWER(*fmt) == 'l' || TOLOWER(*fmt) == 'z') { |
1da177e4c Linux-2.6.12-rc2 |
1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 |
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 |
1943 1944 1945 |
if (!*fmt || !*str) break; |
d4be151b2 vsprintf: move lo... |
1946 1947 |
base = 10; is_sign = 0; |
7b9186f5e vsprintf: give it... |
1948 |
switch (*fmt++) { |
1da177e4c Linux-2.6.12-rc2 |
1949 1950 |
case 'c': { |
7b9186f5e vsprintf: give it... |
1951 |
char *s = (char *)va_arg(args, char*); |
1da177e4c Linux-2.6.12-rc2 |
1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 |
if (field_width == -1) field_width = 1; do { *s++ = *str++; } while (--field_width > 0 && *str); num++; } continue; case 's': { |
7b9186f5e vsprintf: give it... |
1962 1963 |
char *s = (char *)va_arg(args, char *); if (field_width == -1) |
4be929be3 kernel-wide: repl... |
1964 |
field_width = SHRT_MAX; |
1da177e4c Linux-2.6.12-rc2 |
1965 |
/* first, skip leading white space in buffer */ |
e7d2860b6 tree-wide: conver... |
1966 |
str = skip_spaces(str); |
1da177e4c Linux-2.6.12-rc2 |
1967 1968 |
/* now copy until next white space */ |
7b9186f5e vsprintf: give it... |
1969 |
while (*str && !isspace(*str) && field_width--) |
1da177e4c Linux-2.6.12-rc2 |
1970 |
*s++ = *str++; |
1da177e4c Linux-2.6.12-rc2 |
1971 1972 1973 1974 1975 1976 1977 |
*s = '\0'; num++; } continue; case 'n': /* return number of characters read so far */ { |
7b9186f5e vsprintf: give it... |
1978 |
int *i = (int *)va_arg(args, int*); |
1da177e4c Linux-2.6.12-rc2 |
1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 |
*i = str - buf; } continue; case 'o': base = 8; break; case 'x': case 'X': base = 16; break; case 'i': |
7b9186f5e vsprintf: give it... |
1990 |
base = 0; |
1da177e4c Linux-2.6.12-rc2 |
1991 1992 1993 1994 1995 1996 |
case 'd': is_sign = 1; case 'u': break; case '%': /* looking for '%' in str */ |
7b9186f5e vsprintf: give it... |
1997 |
if (*str++ != '%') |
1da177e4c Linux-2.6.12-rc2 |
1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 |
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... |
2008 |
str = skip_spaces(str); |
1da177e4c Linux-2.6.12-rc2 |
2009 2010 2011 2012 2013 2014 |
digit = *str; if (is_sign && digit == '-') digit = *(str + 1); if (!digit |
7b9186f5e vsprintf: give it... |
2015 2016 2017 2018 2019 |
|| (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 |
2020 |
|
7b9186f5e vsprintf: give it... |
2021 |
switch (qualifier) { |
1da177e4c Linux-2.6.12-rc2 |
2022 2023 |
case 'H': /* that's 'hh' in format */ if (is_sign) { |
7b9186f5e vsprintf: give it... |
2024 2025 |
signed char *s = (signed char *)va_arg(args, signed char *); *s = (signed char)simple_strtol(str, &next, base); |
1da177e4c Linux-2.6.12-rc2 |
2026 |
} else { |
7b9186f5e vsprintf: give it... |
2027 2028 |
unsigned char *s = (unsigned char *)va_arg(args, unsigned char *); *s = (unsigned char)simple_strtoul(str, &next, base); |
1da177e4c Linux-2.6.12-rc2 |
2029 2030 2031 2032 |
} break; case 'h': if (is_sign) { |
7b9186f5e vsprintf: give it... |
2033 2034 |
short *s = (short *)va_arg(args, short *); *s = (short)simple_strtol(str, &next, base); |
1da177e4c Linux-2.6.12-rc2 |
2035 |
} else { |
7b9186f5e vsprintf: give it... |
2036 2037 |
unsigned short *s = (unsigned short *)va_arg(args, unsigned short *); *s = (unsigned short)simple_strtoul(str, &next, base); |
1da177e4c Linux-2.6.12-rc2 |
2038 2039 2040 2041 |
} break; case 'l': if (is_sign) { |
7b9186f5e vsprintf: give it... |
2042 2043 |
long *l = (long *)va_arg(args, long *); *l = simple_strtol(str, &next, base); |
1da177e4c Linux-2.6.12-rc2 |
2044 |
} else { |
7b9186f5e vsprintf: give it... |
2045 2046 |
unsigned long *l = (unsigned long *)va_arg(args, unsigned long *); *l = simple_strtoul(str, &next, base); |
1da177e4c Linux-2.6.12-rc2 |
2047 2048 2049 2050 |
} break; case 'L': if (is_sign) { |
7b9186f5e vsprintf: give it... |
2051 2052 |
long long *l = (long long *)va_arg(args, long long *); *l = simple_strtoll(str, &next, base); |
1da177e4c Linux-2.6.12-rc2 |
2053 |
} else { |
7b9186f5e vsprintf: give it... |
2054 2055 |
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 |
2056 2057 2058 2059 2060 |
} break; case 'Z': case 'z': { |
7b9186f5e vsprintf: give it... |
2061 2062 |
size_t *s = (size_t *)va_arg(args, size_t *); *s = (size_t)simple_strtoul(str, &next, base); |
1da177e4c Linux-2.6.12-rc2 |
2063 2064 2065 2066 |
} break; default: if (is_sign) { |
7b9186f5e vsprintf: give it... |
2067 2068 |
int *i = (int *)va_arg(args, int *); *i = (int)simple_strtol(str, &next, base); |
1da177e4c Linux-2.6.12-rc2 |
2069 |
} else { |
7b9186f5e vsprintf: give it... |
2070 2071 |
unsigned int *i = (unsigned int *)va_arg(args, unsigned int*); *i = (unsigned int)simple_strtoul(str, &next, base); |
1da177e4c Linux-2.6.12-rc2 |
2072 2073 2074 2075 2076 2077 2078 2079 2080 |
} break; } num++; if (!next) break; str = next; } |
c6b40d16d fix sscanf %n mat... |
2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 |
/* * 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 |
2091 2092 |
return num; } |
1da177e4c Linux-2.6.12-rc2 |
2093 2094 2095 2096 2097 2098 2099 2100 |
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... |
2101 |
int sscanf(const char *buf, const char *fmt, ...) |
1da177e4c Linux-2.6.12-rc2 |
2102 2103 2104 |
{ va_list args; int i; |
7b9186f5e vsprintf: give it... |
2105 2106 |
va_start(args, fmt); i = vsscanf(buf, fmt, args); |
1da177e4c Linux-2.6.12-rc2 |
2107 |
va_end(args); |
7b9186f5e vsprintf: give it... |
2108 |
|
1da177e4c Linux-2.6.12-rc2 |
2109 2110 |
return i; } |
1da177e4c Linux-2.6.12-rc2 |
2111 |
EXPORT_SYMBOL(sscanf); |