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lib/vsprintf.c
70.3 KB
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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> |
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#include <linux/clk.h> |
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#include <linux/clk-provider.h> |
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#include <linux/module.h> /* for KSYM_SYMBOL_LEN */ |
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#include <linux/types.h> #include <linux/string.h> #include <linux/ctype.h> #include <linux/kernel.h> |
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#include <linux/kallsyms.h> |
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#include <linux/math64.h> |
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#include <linux/uaccess.h> |
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#include <linux/ioport.h> |
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#include <linux/dcache.h> |
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#include <linux/cred.h> |
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#include <linux/uuid.h> |
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#include <linux/of.h> |
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#include <net/addrconf.h> |
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#ifdef CONFIG_BLOCK #include <linux/blkdev.h> #endif |
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#include "../mm/internal.h" /* For the trace_print_flags arrays */ |
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#include <asm/page.h> /* for PAGE_SIZE */ |
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#include <asm/sections.h> /* for dereference_function_descriptor() */ |
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#include <asm/byteorder.h> /* cpu_to_le16 */ |
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|
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#include <linux/string_helpers.h> |
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#include "kstrtox.h" |
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|
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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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* * This function is obsolete. Please use kstrtoull instead. |
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*/ |
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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; unsigned int rv; |
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cp = _parse_integer_fixup_radix(cp, &base); rv = _parse_integer(cp, base, &result); /* FIXME */ cp += (rv & ~KSTRTOX_OVERFLOW); |
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|
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if (endp) *endp = (char *)cp; |
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|
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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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* * This function is obsolete. Please use kstrtoul instead. |
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*/ |
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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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* * This function is obsolete. Please use kstrtol instead. |
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*/ |
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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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|
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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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* * This function is obsolete. Please use kstrtoll instead. |
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*/ |
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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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|
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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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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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do { |
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i = i*10 + *((*s)++) - '0'; |
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} while (isdigit(**s)); |
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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 by emitting * two characters at a time, using a 200 byte lookup table. This * roughly halves the number of multiplications compared to computing * the digits one at a time. Implementation strongly inspired by the * previous version, which in turn used ideas described at * <http://www.cs.uiowa.edu/~jones/bcd/divide.html> (with permission * from the author, Douglas W. Jones). * * It turns out there is precisely one 26 bit fixed-point * approximation a of 64/100 for which x/100 == (x * (u64)a) >> 32 * holds for all x in [0, 10^8-1], namely a = 0x28f5c29. The actual * range happens to be somewhat larger (x <= 1073741898), but that's * irrelevant for our purpose. * * For dividing a number in the range [10^4, 10^6-1] by 100, we still * need a 32x32->64 bit multiply, so we simply use the same constant. * * For dividing a number in the range [100, 10^4-1] by 100, there are * several options. The simplest is (x * 0x147b) >> 19, which is valid * for all x <= 43698. |
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*/ |
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static const u16 decpair[100] = { #define _(x) (__force u16) cpu_to_le16(((x % 10) | ((x / 10) << 8)) + 0x3030) _( 0), _( 1), _( 2), _( 3), _( 4), _( 5), _( 6), _( 7), _( 8), _( 9), _(10), _(11), _(12), _(13), _(14), _(15), _(16), _(17), _(18), _(19), _(20), _(21), _(22), _(23), _(24), _(25), _(26), _(27), _(28), _(29), _(30), _(31), _(32), _(33), _(34), _(35), _(36), _(37), _(38), _(39), _(40), _(41), _(42), _(43), _(44), _(45), _(46), _(47), _(48), _(49), _(50), _(51), _(52), _(53), _(54), _(55), _(56), _(57), _(58), _(59), _(60), _(61), _(62), _(63), _(64), _(65), _(66), _(67), _(68), _(69), _(70), _(71), _(72), _(73), _(74), _(75), _(76), _(77), _(78), _(79), _(80), _(81), _(82), _(83), _(84), _(85), _(86), _(87), _(88), _(89), _(90), _(91), _(92), _(93), _(94), _(95), _(96), _(97), _(98), _(99), #undef _ }; /* * This will print a single '0' even if r == 0, since we would |
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* immediately jump to out_r where two 0s would be written but only * one of them accounted for in buf. This is needed by ip4_string * below. All other callers pass a non-zero value of r. |
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*/ |
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static noinline_for_stack |
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char *put_dec_trunc8(char *buf, unsigned r) |
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{ |
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unsigned q; /* 1 <= r < 10^8 */ if (r < 100) goto out_r; /* 100 <= r < 10^8 */ q = (r * (u64)0x28f5c29) >> 32; *((u16 *)buf) = decpair[r - 100*q]; buf += 2; /* 1 <= q < 10^6 */ if (q < 100) goto out_q; /* 100 <= q < 10^6 */ r = (q * (u64)0x28f5c29) >> 32; *((u16 *)buf) = decpair[q - 100*r]; buf += 2; /* 1 <= r < 10^4 */ if (r < 100) goto out_r; /* 100 <= r < 10^4 */ q = (r * 0x147b) >> 19; *((u16 *)buf) = decpair[r - 100*q]; buf += 2; out_q: /* 1 <= q < 100 */ r = q; out_r: /* 1 <= r < 100 */ *((u16 *)buf) = decpair[r]; |
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buf += r < 10 ? 1 : 2; |
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return buf; } |
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#if BITS_PER_LONG == 64 && BITS_PER_LONG_LONG == 64 |
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static noinline_for_stack |
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char *put_dec_full8(char *buf, unsigned r) |
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{ |
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unsigned q; |
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/* 0 <= r < 10^8 */ q = (r * (u64)0x28f5c29) >> 32; *((u16 *)buf) = decpair[r - 100*q]; buf += 2; |
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/* 0 <= q < 10^6 */ r = (q * (u64)0x28f5c29) >> 32; *((u16 *)buf) = decpair[q - 100*r]; buf += 2; |
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/* 0 <= r < 10^4 */ q = (r * 0x147b) >> 19; *((u16 *)buf) = decpair[r - 100*q]; buf += 2; |
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/* 0 <= q < 100 */ *((u16 *)buf) = decpair[q]; buf += 2; return buf; } |
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static noinline_for_stack |
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char *put_dec(char *buf, unsigned long long n) { |
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if (n >= 100*1000*1000) buf = put_dec_full8(buf, do_div(n, 100*1000*1000)); /* 1 <= n <= 1.6e11 */ if (n >= 100*1000*1000) buf = put_dec_full8(buf, do_div(n, 100*1000*1000)); /* 1 <= n < 1e8 */ |
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return put_dec_trunc8(buf, n); |
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} |
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#elif BITS_PER_LONG == 32 && BITS_PER_LONG_LONG == 64 |
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static void put_dec_full4(char *buf, unsigned r) |
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{ |
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unsigned q; /* 0 <= r < 10^4 */ q = (r * 0x147b) >> 19; *((u16 *)buf) = decpair[r - 100*q]; buf += 2; /* 0 <= q < 100 */ *((u16 *)buf) = decpair[q]; |
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} /* * Call put_dec_full4 on x % 10000, return x / 10000. * The approximation x/10000 == (x * 0x346DC5D7) >> 43 * holds for all x < 1,128,869,999. The largest value this * helper will ever be asked to convert is 1,125,520,955. |
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* (second call in the put_dec code, assuming n is all-ones). |
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*/ |
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static noinline_for_stack |
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unsigned put_dec_helper4(char *buf, unsigned x) { uint32_t q = (x * (uint64_t)0x346DC5D7) >> 43; put_dec_full4(buf, x - q * 10000); return q; |
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} |
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/* Based on code by Douglas W. Jones found at * <http://www.cs.uiowa.edu/~jones/bcd/decimal.html#sixtyfour> * (with permission from the author). * Performs no 64-bit division and hence should be fast on 32-bit machines. */ static char *put_dec(char *buf, unsigned long long n) { uint32_t d3, d2, d1, q, h; if (n < 100*1000*1000) return put_dec_trunc8(buf, n); d1 = ((uint32_t)n >> 16); /* implicit "& 0xffff" */ h = (n >> 32); d2 = (h ) & 0xffff; d3 = (h >> 16); /* implicit "& 0xffff" */ |
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/* n = 2^48 d3 + 2^32 d2 + 2^16 d1 + d0 = 281_4749_7671_0656 d3 + 42_9496_7296 d2 + 6_5536 d1 + d0 */ |
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q = 656 * d3 + 7296 * d2 + 5536 * d1 + ((uint32_t)n & 0xffff); |
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q = put_dec_helper4(buf, q); q += 7671 * d3 + 9496 * d2 + 6 * d1; q = put_dec_helper4(buf+4, q); q += 4749 * d3 + 42 * d2; q = put_dec_helper4(buf+8, q); |
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q += 281 * d3; buf += 12; if (q) buf = put_dec_trunc8(buf, q); else while (buf[-1] == '0') |
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--buf; return buf; } #endif |
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/* * Convert passed number to decimal string. * Returns the length of string. On buffer overflow, returns 0. * * If speed is not important, use snprintf(). It's easy to read the code. */ int num_to_str(char *buf, int size, unsigned long long num) { |
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/* put_dec requires 2-byte alignment of the buffer. */ char tmp[sizeof(num) * 3] __aligned(2); |
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int idx, len; |
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/* put_dec() may work incorrectly for num = 0 (generate "", not "0") */ if (num <= 9) { tmp[0] = '0' + num; len = 1; } else { len = put_dec(tmp, num) - tmp; } |
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if (len > size) return 0; for (idx = 0; idx < len; ++idx) buf[idx] = tmp[len - idx - 1]; |
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return len; |
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} |
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#define SIGN 1 /* unsigned/signed, must be 1 */ |
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#define LEFT 2 /* left justified */ |
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#define PLUS 4 /* show plus */ #define SPACE 8 /* space if plus */ |
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#define ZEROPAD 16 /* pad with zero, must be 16 == '0' - ' ' */ |
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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, |
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FORMAT_TYPE_SIZE_T, FORMAT_TYPE_PTRDIFF }; struct printf_spec { |
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unsigned int type:8; /* format_type enum */ signed int field_width:24; /* width of output field */ unsigned int flags:8; /* flags to number() */ unsigned int base:8; /* number base, 8, 10 or 16 only */ signed int precision:16; /* # of digits/chars */ } __packed; |
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#define FIELD_WIDTH_MAX ((1 << 23) - 1) #define PRECISION_MAX ((1 << 15) - 1) |
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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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/* put_dec requires 2-byte alignment of the buffer. */ char tmp[3 * sizeof(num)] __aligned(2); |
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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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bool is_zero = num == 0LL; |
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int field_width = spec.field_width; int precision = spec.precision; |
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BUILD_BUG_ON(sizeof(struct printf_spec) != 8); |
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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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407 408 409 |
locase = (spec.flags & SMALL); if (spec.flags & LEFT) spec.flags &= ~ZEROPAD; |
1da177e4c Linux-2.6.12-rc2 |
410 |
sign = 0; |
fef20d9c1 vsprintf: unify t... |
411 |
if (spec.flags & SIGN) { |
7b9186f5e vsprintf: give it... |
412 |
if ((signed long long)num < 0) { |
1da177e4c Linux-2.6.12-rc2 |
413 |
sign = '-'; |
7b9186f5e vsprintf: give it... |
414 |
num = -(signed long long)num; |
1c7a8e622 lib/vsprintf.c: h... |
415 |
field_width--; |
fef20d9c1 vsprintf: unify t... |
416 |
} else if (spec.flags & PLUS) { |
1da177e4c Linux-2.6.12-rc2 |
417 |
sign = '+'; |
1c7a8e622 lib/vsprintf.c: h... |
418 |
field_width--; |
fef20d9c1 vsprintf: unify t... |
419 |
} else if (spec.flags & SPACE) { |
1da177e4c Linux-2.6.12-rc2 |
420 |
sign = ' '; |
1c7a8e622 lib/vsprintf.c: h... |
421 |
field_width--; |
1da177e4c Linux-2.6.12-rc2 |
422 423 |
} } |
b39a73409 vsprintf.c: optim... |
424 |
if (need_pfx) { |
fef20d9c1 vsprintf: unify t... |
425 |
if (spec.base == 16) |
1c7a8e622 lib/vsprintf.c: h... |
426 |
field_width -= 2; |
7c2034223 lib/vsprintf.c: "... |
427 |
else if (!is_zero) |
1c7a8e622 lib/vsprintf.c: h... |
428 |
field_width--; |
1da177e4c Linux-2.6.12-rc2 |
429 |
} |
b39a73409 vsprintf.c: optim... |
430 431 |
/* generate full string in tmp[], in reverse order */ |
1da177e4c Linux-2.6.12-rc2 |
432 |
i = 0; |
133fd9f5c vsprintf: further... |
433 |
if (num < spec.base) |
3ea8d440a lib/vsprintf.c: e... |
434 |
tmp[i++] = hex_asc_upper[num] | locase; |
fef20d9c1 vsprintf: unify t... |
435 436 |
else if (spec.base != 10) { /* 8 or 16 */ int mask = spec.base - 1; |
b39a73409 vsprintf.c: optim... |
437 |
int shift = 3; |
7b9186f5e vsprintf: give it... |
438 439 440 |
if (spec.base == 16) shift = 4; |
b39a73409 vsprintf.c: optim... |
441 |
do { |
3ea8d440a lib/vsprintf.c: e... |
442 |
tmp[i++] = (hex_asc_upper[((unsigned char)num) & mask] | locase); |
b39a73409 vsprintf.c: optim... |
443 444 |
num >>= shift; } while (num); |
4277eedd7 vsprintf.c: optim... |
445 446 447 |
} else { /* base 10 */ i = put_dec(tmp, num) - tmp; } |
b39a73409 vsprintf.c: optim... |
448 449 |
/* printing 100 using %2d gives "100", not "00" */ |
1c7a8e622 lib/vsprintf.c: h... |
450 451 |
if (i > precision) precision = i; |
b39a73409 vsprintf.c: optim... |
452 |
/* leading space padding */ |
1c7a8e622 lib/vsprintf.c: h... |
453 |
field_width -= precision; |
51be17dff lib/vsprintf.c: e... |
454 |
if (!(spec.flags & (ZEROPAD | LEFT))) { |
1c7a8e622 lib/vsprintf.c: h... |
455 |
while (--field_width >= 0) { |
f796937a0 [PATCH] Fix bound... |
456 |
if (buf < end) |
1da177e4c Linux-2.6.12-rc2 |
457 458 459 460 |
*buf = ' '; ++buf; } } |
b39a73409 vsprintf.c: optim... |
461 |
/* sign */ |
1da177e4c Linux-2.6.12-rc2 |
462 |
if (sign) { |
f796937a0 [PATCH] Fix bound... |
463 |
if (buf < end) |
1da177e4c Linux-2.6.12-rc2 |
464 465 466 |
*buf = sign; ++buf; } |
b39a73409 vsprintf.c: optim... |
467 468 |
/* "0x" / "0" prefix */ if (need_pfx) { |
7c2034223 lib/vsprintf.c: "... |
469 470 471 472 473 |
if (spec.base == 16 || !is_zero) { if (buf < end) *buf = '0'; ++buf; } |
fef20d9c1 vsprintf: unify t... |
474 |
if (spec.base == 16) { |
f796937a0 [PATCH] Fix bound... |
475 |
if (buf < end) |
9b706aee7 x86: trivial prin... |
476 |
*buf = ('X' | locase); |
1da177e4c Linux-2.6.12-rc2 |
477 478 479 |
++buf; } } |
b39a73409 vsprintf.c: optim... |
480 |
/* zero or space padding */ |
fef20d9c1 vsprintf: unify t... |
481 |
if (!(spec.flags & LEFT)) { |
d1c1b1213 lib/vsprintf.c: a... |
482 483 |
char c = ' ' + (spec.flags & ZEROPAD); BUILD_BUG_ON(' ' + ZEROPAD != '0'); |
1c7a8e622 lib/vsprintf.c: h... |
484 |
while (--field_width >= 0) { |
f796937a0 [PATCH] Fix bound... |
485 |
if (buf < end) |
1da177e4c Linux-2.6.12-rc2 |
486 487 488 489 |
*buf = c; ++buf; } } |
b39a73409 vsprintf.c: optim... |
490 |
/* hmm even more zero padding? */ |
1c7a8e622 lib/vsprintf.c: h... |
491 |
while (i <= --precision) { |
f796937a0 [PATCH] Fix bound... |
492 |
if (buf < end) |
1da177e4c Linux-2.6.12-rc2 |
493 494 495 |
*buf = '0'; ++buf; } |
b39a73409 vsprintf.c: optim... |
496 497 |
/* actual digits of result */ while (--i >= 0) { |
f796937a0 [PATCH] Fix bound... |
498 |
if (buf < end) |
1da177e4c Linux-2.6.12-rc2 |
499 500 501 |
*buf = tmp[i]; ++buf; } |
b39a73409 vsprintf.c: optim... |
502 |
/* trailing space padding */ |
1c7a8e622 lib/vsprintf.c: h... |
503 |
while (--field_width >= 0) { |
f796937a0 [PATCH] Fix bound... |
504 |
if (buf < end) |
1da177e4c Linux-2.6.12-rc2 |
505 506 507 |
*buf = ' '; ++buf; } |
7b9186f5e vsprintf: give it... |
508 |
|
1da177e4c Linux-2.6.12-rc2 |
509 510 |
return buf; } |
3cab1e711 lib/vsprintf: ref... |
511 512 513 514 515 516 517 518 519 520 521 522 523 |
static noinline_for_stack char *special_hex_number(char *buf, char *end, unsigned long long num, int size) { struct printf_spec spec; spec.type = FORMAT_TYPE_PTR; spec.field_width = 2 + 2 * size; /* 0x + hex */ spec.flags = SPECIAL | SMALL | ZEROPAD; spec.base = 16; spec.precision = -1; return number(buf, end, num, spec); } |
cfccde04e lib/vsprintf.c: p... |
524 |
static void move_right(char *buf, char *end, unsigned len, unsigned spaces) |
4b6ccca70 add formats for d... |
525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 |
{ size_t size; if (buf >= end) /* nowhere to put anything */ return; size = end - buf; if (size <= spaces) { memset(buf, ' ', size); return; } if (len) { if (len > size - spaces) len = size - spaces; memmove(buf + spaces, buf, len); } memset(buf, ' ', spaces); } |
cfccde04e lib/vsprintf.c: p... |
541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 |
/* * Handle field width padding for a string. * @buf: current buffer position * @n: length of string * @end: end of output buffer * @spec: for field width and flags * Returns: new buffer position after padding. */ static noinline_for_stack char *widen_string(char *buf, int n, char *end, struct printf_spec spec) { unsigned spaces; if (likely(n >= spec.field_width)) return buf; /* we want to pad the sucker */ spaces = spec.field_width - n; if (!(spec.flags & LEFT)) { move_right(buf - n, end, n, spaces); return buf + spaces; } while (spaces--) { if (buf < end) *buf = ' '; ++buf; } return buf; } |
4b6ccca70 add formats for d... |
569 |
static noinline_for_stack |
95508cfa1 lib/vsprintf.c: m... |
570 571 |
char *string(char *buf, char *end, const char *s, struct printf_spec spec) { |
34fc8b907 lib/vsprintf.c: e... |
572 573 |
int len = 0; size_t lim = spec.precision; |
95508cfa1 lib/vsprintf.c: m... |
574 575 576 |
if ((unsigned long)s < PAGE_SIZE) s = "(null)"; |
34fc8b907 lib/vsprintf.c: e... |
577 578 579 580 |
while (lim--) { char c = *s++; if (!c) break; |
95508cfa1 lib/vsprintf.c: m... |
581 |
if (buf < end) |
34fc8b907 lib/vsprintf.c: e... |
582 |
*buf = c; |
95508cfa1 lib/vsprintf.c: m... |
583 |
++buf; |
34fc8b907 lib/vsprintf.c: e... |
584 |
++len; |
95508cfa1 lib/vsprintf.c: m... |
585 |
} |
34fc8b907 lib/vsprintf.c: e... |
586 |
return widen_string(buf, len, end, spec); |
95508cfa1 lib/vsprintf.c: m... |
587 588 589 |
} static noinline_for_stack |
4b6ccca70 add formats for d... |
590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 |
char *dentry_name(char *buf, char *end, const struct dentry *d, struct printf_spec spec, const char *fmt) { const char *array[4], *s; const struct dentry *p; int depth; int i, n; switch (fmt[1]) { case '2': case '3': case '4': depth = fmt[1] - '0'; break; default: depth = 1; } rcu_read_lock(); for (i = 0; i < depth; i++, d = p) { p = ACCESS_ONCE(d->d_parent); array[i] = ACCESS_ONCE(d->d_name.name); if (p == d) { if (i) array[i] = ""; i++; break; } } s = array[--i]; for (n = 0; n != spec.precision; n++, buf++) { char c = *s++; if (!c) { if (!i) break; c = '/'; s = array[--i]; } if (buf < end) *buf = c; } rcu_read_unlock(); |
cfccde04e lib/vsprintf.c: p... |
630 |
return widen_string(buf, n, end, spec); |
4b6ccca70 add formats for d... |
631 |
} |
1031bc589 lib/vsprintf: add... |
632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 |
#ifdef CONFIG_BLOCK static noinline_for_stack char *bdev_name(char *buf, char *end, struct block_device *bdev, struct printf_spec spec, const char *fmt) { struct gendisk *hd = bdev->bd_disk; buf = string(buf, end, hd->disk_name, spec); if (bdev->bd_part->partno) { if (isdigit(hd->disk_name[strlen(hd->disk_name)-1])) { if (buf < end) *buf = 'p'; buf++; } buf = number(buf, end, bdev->bd_part->partno, spec); } return buf; } #endif |
cf3b429b0 vsprintf.c: use n... |
651 652 |
static noinline_for_stack char *symbol_string(char *buf, char *end, void *ptr, |
b0d33c2bd vsprintf: Add ext... |
653 |
struct printf_spec spec, const char *fmt) |
0fe1ef24f vsprintf: add sup... |
654 |
{ |
b0d33c2bd vsprintf: Add ext... |
655 |
unsigned long value; |
0fe1ef24f vsprintf: add sup... |
656 657 |
#ifdef CONFIG_KALLSYMS char sym[KSYM_SYMBOL_LEN]; |
b0d33c2bd vsprintf: Add ext... |
658 659 660 661 662 663 664 665 |
#endif if (fmt[1] == 'R') ptr = __builtin_extract_return_addr(ptr); value = (unsigned long)ptr; #ifdef CONFIG_KALLSYMS if (*fmt == 'B') |
0f77a8d37 vsprintf: Introdu... |
666 |
sprint_backtrace(sym, value); |
b0d33c2bd vsprintf: Add ext... |
667 |
else if (*fmt != 'f' && *fmt != 's') |
0c8b946e3 vsprintf: introdu... |
668 669 |
sprint_symbol(sym, value); else |
4796dd200 vsprintf: fix %ps... |
670 |
sprint_symbol_no_offset(sym, value); |
7b9186f5e vsprintf: give it... |
671 |
|
fef20d9c1 vsprintf: unify t... |
672 |
return string(buf, end, sym, spec); |
0fe1ef24f vsprintf: add sup... |
673 |
#else |
3cab1e711 lib/vsprintf: ref... |
674 |
return special_hex_number(buf, end, value, sizeof(void *)); |
0fe1ef24f vsprintf: add sup... |
675 676 |
#endif } |
cf3b429b0 vsprintf.c: use n... |
677 678 679 |
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 ... |
680 681 |
{ #ifndef IO_RSRC_PRINTK_SIZE |
284053722 vsprintf: fix io/... |
682 |
#define IO_RSRC_PRINTK_SIZE 6 |
332d2e783 Implement %pR to ... |
683 684 685 |
#endif #ifndef MEM_RSRC_PRINTK_SIZE |
284053722 vsprintf: fix io/... |
686 |
#define MEM_RSRC_PRINTK_SIZE 10 |
332d2e783 Implement %pR to ... |
687 |
#endif |
4da0b66c6 vsprintf: move %p... |
688 |
static const struct printf_spec io_spec = { |
fef20d9c1 vsprintf: unify t... |
689 |
.base = 16, |
4da0b66c6 vsprintf: move %p... |
690 |
.field_width = IO_RSRC_PRINTK_SIZE, |
fef20d9c1 vsprintf: unify t... |
691 692 693 |
.precision = -1, .flags = SPECIAL | SMALL | ZEROPAD, }; |
4da0b66c6 vsprintf: move %p... |
694 695 696 697 698 699 |
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... |
700 701 702 703 704 705 |
static const struct printf_spec bus_spec = { .base = 16, .field_width = 2, .precision = -1, .flags = SMALL | ZEROPAD, }; |
4da0b66c6 vsprintf: move %p... |
706 |
static const struct printf_spec dec_spec = { |
c91d3376e vsprintf: add %pR... |
707 708 709 710 |
.base = 10, .precision = -1, .flags = 0, }; |
4da0b66c6 vsprintf: move %p... |
711 |
static const struct printf_spec str_spec = { |
fd95541e2 vsprintf: add %pR... |
712 713 714 715 |
.field_width = -1, .precision = 10, .flags = LEFT, }; |
4da0b66c6 vsprintf: move %p... |
716 |
static const struct printf_spec flag_spec = { |
fd95541e2 vsprintf: add %pR... |
717 718 719 720 |
.base = 16, .precision = -1, .flags = SPECIAL | SMALL, }; |
c7dabef8a vsprintf: use %pR... |
721 722 723 724 725 |
/* 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... |
726 |
#define DECODED_BUF_SIZE sizeof("[mem - 64bit pref window disabled]") |
c7dabef8a vsprintf: use %pR... |
727 728 729 |
#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 ... |
730 |
char *p = sym, *pend = sym + sizeof(sym); |
c7dabef8a vsprintf: use %pR... |
731 |
int decode = (fmt[0] == 'R') ? 1 : 0; |
4da0b66c6 vsprintf: move %p... |
732 |
const struct printf_spec *specp; |
332d2e783 Implement %pR to ... |
733 734 |
*p++ = '['; |
4da0b66c6 vsprintf: move %p... |
735 |
if (res->flags & IORESOURCE_IO) { |
c7dabef8a vsprintf: use %pR... |
736 |
p = string(p, pend, "io ", str_spec); |
4da0b66c6 vsprintf: move %p... |
737 738 |
specp = &io_spec; } else if (res->flags & IORESOURCE_MEM) { |
c7dabef8a vsprintf: use %pR... |
739 |
p = string(p, pend, "mem ", str_spec); |
4da0b66c6 vsprintf: move %p... |
740 741 |
specp = &mem_spec; } else if (res->flags & IORESOURCE_IRQ) { |
c7dabef8a vsprintf: use %pR... |
742 |
p = string(p, pend, "irq ", str_spec); |
4da0b66c6 vsprintf: move %p... |
743 744 |
specp = &dec_spec; } else if (res->flags & IORESOURCE_DMA) { |
c7dabef8a vsprintf: use %pR... |
745 |
p = string(p, pend, "dma ", str_spec); |
4da0b66c6 vsprintf: move %p... |
746 |
specp = &dec_spec; |
0f4050c7d resource: add bus... |
747 748 749 |
} else if (res->flags & IORESOURCE_BUS) { p = string(p, pend, "bus ", str_spec); specp = &bus_spec; |
4da0b66c6 vsprintf: move %p... |
750 |
} else { |
c7dabef8a vsprintf: use %pR... |
751 |
p = string(p, pend, "??? ", str_spec); |
4da0b66c6 vsprintf: move %p... |
752 |
specp = &mem_spec; |
c7dabef8a vsprintf: use %pR... |
753 |
decode = 0; |
fd95541e2 vsprintf: add %pR... |
754 |
} |
d19cb803a vsprintf: Add sup... |
755 756 757 758 759 760 761 762 763 |
if (decode && res->flags & IORESOURCE_UNSET) { p = string(p, pend, "size ", str_spec); p = number(p, pend, resource_size(res), *specp); } else { p = number(p, pend, res->start, *specp); if (res->start != res->end) { *p++ = '-'; p = number(p, pend, res->end, *specp); } |
c91d3376e vsprintf: add %pR... |
764 |
} |
c7dabef8a vsprintf: use %pR... |
765 |
if (decode) { |
fd95541e2 vsprintf: add %pR... |
766 767 768 769 |
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... |
770 771 |
if (res->flags & IORESOURCE_WINDOW) p = string(p, pend, " window", str_spec); |
fd95541e2 vsprintf: add %pR... |
772 773 |
if (res->flags & IORESOURCE_DISABLED) p = string(p, pend, " disabled", str_spec); |
c7dabef8a vsprintf: use %pR... |
774 775 776 |
} else { p = string(p, pend, " flags ", str_spec); p = number(p, pend, res->flags, flag_spec); |
fd95541e2 vsprintf: add %pR... |
777 |
} |
332d2e783 Implement %pR to ... |
778 |
*p++ = ']'; |
c7dabef8a vsprintf: use %pR... |
779 |
*p = '\0'; |
332d2e783 Implement %pR to ... |
780 |
|
fef20d9c1 vsprintf: unify t... |
781 |
return string(buf, end, sym, spec); |
332d2e783 Implement %pR to ... |
782 |
} |
cf3b429b0 vsprintf.c: use n... |
783 |
static noinline_for_stack |
31550a16a vsprintf: add sup... |
784 785 786 |
char *hex_string(char *buf, char *end, u8 *addr, struct printf_spec spec, const char *fmt) { |
360603a1b sprintf: hex_stri... |
787 |
int i, len = 1; /* if we pass '%ph[CDN]', field width remains |
31550a16a vsprintf: add sup... |
788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 |
negative value, fallback to the default */ char separator; if (spec.field_width == 0) /* nothing to print */ return buf; if (ZERO_OR_NULL_PTR(addr)) /* NULL pointer */ return string(buf, end, NULL, spec); switch (fmt[1]) { case 'C': separator = ':'; break; case 'D': separator = '-'; break; case 'N': separator = 0; break; default: separator = ' '; break; } if (spec.field_width > 0) len = min_t(int, spec.field_width, 64); |
9c98f2359 lib/vsprintf.c: f... |
816 817 818 819 820 821 822 |
for (i = 0; i < len; ++i) { if (buf < end) *buf = hex_asc_hi(addr[i]); ++buf; if (buf < end) *buf = hex_asc_lo(addr[i]); ++buf; |
31550a16a vsprintf: add sup... |
823 |
|
9c98f2359 lib/vsprintf.c: f... |
824 825 826 827 828 |
if (separator && i != len - 1) { if (buf < end) *buf = separator; ++buf; } |
31550a16a vsprintf: add sup... |
829 830 831 832 833 834 |
} return buf; } static noinline_for_stack |
dbc760bcc lib/vsprintf: imp... |
835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 |
char *bitmap_string(char *buf, char *end, unsigned long *bitmap, struct printf_spec spec, const char *fmt) { const int CHUNKSZ = 32; int nr_bits = max_t(int, spec.field_width, 0); int i, chunksz; bool first = true; /* reused to print numbers */ spec = (struct printf_spec){ .flags = SMALL | ZEROPAD, .base = 16 }; chunksz = nr_bits & (CHUNKSZ - 1); if (chunksz == 0) chunksz = CHUNKSZ; i = ALIGN(nr_bits, CHUNKSZ) - CHUNKSZ; for (; i >= 0; i -= CHUNKSZ) { u32 chunkmask, val; int word, bit; chunkmask = ((1ULL << chunksz) - 1); word = i / BITS_PER_LONG; bit = i % BITS_PER_LONG; val = (bitmap[word] >> bit) & chunkmask; if (!first) { if (buf < end) *buf = ','; buf++; } first = false; spec.field_width = DIV_ROUND_UP(chunksz, 4); buf = number(buf, end, val, spec); chunksz = CHUNKSZ; } return buf; } static noinline_for_stack char *bitmap_list_string(char *buf, char *end, unsigned long *bitmap, struct printf_spec spec, const char *fmt) { int nr_bits = max_t(int, spec.field_width, 0); /* current bit is 'cur', most recently seen range is [rbot, rtop] */ int cur, rbot, rtop; bool first = true; /* reused to print numbers */ spec = (struct printf_spec){ .base = 10 }; rbot = cur = find_first_bit(bitmap, nr_bits); while (cur < nr_bits) { rtop = cur; cur = find_next_bit(bitmap, nr_bits, cur + 1); if (cur < nr_bits && cur <= rtop + 1) continue; if (!first) { if (buf < end) *buf = ','; buf++; } first = false; buf = number(buf, end, rbot, spec); if (rbot < rtop) { if (buf < end) *buf = '-'; buf++; buf = number(buf, end, rtop, spec); } rbot = cur; } return buf; } static noinline_for_stack |
cf3b429b0 vsprintf.c: use n... |
916 917 |
char *mac_address_string(char *buf, char *end, u8 *addr, struct printf_spec spec, const char *fmt) |
dd45c9cf6 printk: add %pM f... |
918 |
{ |
8a27f7c90 lib/vsprintf.c: A... |
919 |
char mac_addr[sizeof("xx:xx:xx:xx:xx:xx")]; |
dd45c9cf6 printk: add %pM f... |
920 921 |
char *p = mac_addr; int i; |
bc7259a2c lib/vsprintf.c: A... |
922 |
char separator; |
76597ff98 vsprintf: add %pM... |
923 |
bool reversed = false; |
bc7259a2c lib/vsprintf.c: A... |
924 |
|
76597ff98 vsprintf: add %pM... |
925 926 |
switch (fmt[1]) { case 'F': |
bc7259a2c lib/vsprintf.c: A... |
927 |
separator = '-'; |
76597ff98 vsprintf: add %pM... |
928 929 930 931 932 933 934 |
break; case 'R': reversed = true; /* fall through */ default: |
bc7259a2c lib/vsprintf.c: A... |
935 |
separator = ':'; |
76597ff98 vsprintf: add %pM... |
936 |
break; |
bc7259a2c lib/vsprintf.c: A... |
937 |
} |
dd45c9cf6 printk: add %pM f... |
938 939 |
for (i = 0; i < 6; i++) { |
76597ff98 vsprintf: add %pM... |
940 941 942 943 |
if (reversed) p = hex_byte_pack(p, addr[5 - i]); else p = hex_byte_pack(p, addr[i]); |
8a27f7c90 lib/vsprintf.c: A... |
944 |
if (fmt[0] == 'M' && i != 5) |
bc7259a2c lib/vsprintf.c: A... |
945 |
*p++ = separator; |
dd45c9cf6 printk: add %pM f... |
946 947 |
} *p = '\0'; |
fef20d9c1 vsprintf: unify t... |
948 |
return string(buf, end, mac_addr, spec); |
dd45c9cf6 printk: add %pM f... |
949 |
} |
cf3b429b0 vsprintf.c: use n... |
950 951 |
static noinline_for_stack char *ip4_string(char *p, const u8 *addr, const char *fmt) |
8a27f7c90 lib/vsprintf.c: A... |
952 953 |
{ int i; |
0159f24ee lib/vsprintf.c: A... |
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 |
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... |
979 |
for (i = 0; i < 4; i++) { |
7c43d9a30 lib/vsprintf.c: e... |
980 |
char temp[4] __aligned(2); /* hold each IP quad in reverse order */ |
133fd9f5c vsprintf: further... |
981 |
int digits = put_dec_trunc8(temp, addr[index]) - temp; |
8a27f7c90 lib/vsprintf.c: A... |
982 983 984 985 986 987 988 989 990 991 992 |
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... |
993 |
index += step; |
8a27f7c90 lib/vsprintf.c: A... |
994 |
} |
8a27f7c90 lib/vsprintf.c: A... |
995 |
*p = '\0'; |
7b9186f5e vsprintf: give it... |
996 |
|
8a27f7c90 lib/vsprintf.c: A... |
997 998 |
return p; } |
cf3b429b0 vsprintf.c: use n... |
999 1000 |
static noinline_for_stack char *ip6_compressed_string(char *p, const char *addr) |
689afa7da printk: add %p6 f... |
1001 |
{ |
7b9186f5e vsprintf: give it... |
1002 |
int i, j, range; |
8a27f7c90 lib/vsprintf.c: A... |
1003 1004 1005 1006 |
unsigned char zerolength[8]; int longest = 1; int colonpos = -1; u16 word; |
7b9186f5e vsprintf: give it... |
1007 |
u8 hi, lo; |
8a27f7c90 lib/vsprintf.c: A... |
1008 |
bool needcolon = false; |
eb78cd26b lib/vsprintf.c: A... |
1009 1010 1011 1012 1013 1014 |
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... |
1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 |
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... |
1026 |
if (in6.s6_addr16[j] != 0) |
8a27f7c90 lib/vsprintf.c: A... |
1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 |
break; zerolength[i]++; } } for (i = 0; i < range; i++) { if (zerolength[i] > longest) { longest = zerolength[i]; colonpos = i; } } |
29cf519ee vsprintf: Update ... |
1037 1038 |
if (longest == 1) /* don't compress a single 0 */ colonpos = -1; |
689afa7da printk: add %p6 f... |
1039 |
|
8a27f7c90 lib/vsprintf.c: A... |
1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 |
/* 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... |
1055 |
word = ntohs(in6.s6_addr16[i]); |
8a27f7c90 lib/vsprintf.c: A... |
1056 1057 1058 1059 |
hi = word >> 8; lo = word & 0xff; if (hi) { if (hi > 0x0f) |
55036ba76 lib: rename pack_... |
1060 |
p = hex_byte_pack(p, hi); |
8a27f7c90 lib/vsprintf.c: A... |
1061 1062 |
else *p++ = hex_asc_lo(hi); |
55036ba76 lib: rename pack_... |
1063 |
p = hex_byte_pack(p, lo); |
8a27f7c90 lib/vsprintf.c: A... |
1064 |
} |
b5ff992b0 vsprintf: reduce ... |
1065 |
else if (lo > 0x0f) |
55036ba76 lib: rename pack_... |
1066 |
p = hex_byte_pack(p, lo); |
8a27f7c90 lib/vsprintf.c: A... |
1067 1068 1069 1070 1071 1072 1073 1074 |
else *p++ = hex_asc_lo(lo); needcolon = true; } if (useIPv4) { if (needcolon) *p++ = ':'; |
0159f24ee lib/vsprintf.c: A... |
1075 |
p = ip4_string(p, &in6.s6_addr[12], "I4"); |
8a27f7c90 lib/vsprintf.c: A... |
1076 |
} |
8a27f7c90 lib/vsprintf.c: A... |
1077 |
*p = '\0'; |
7b9186f5e vsprintf: give it... |
1078 |
|
8a27f7c90 lib/vsprintf.c: A... |
1079 1080 |
return p; } |
cf3b429b0 vsprintf.c: use n... |
1081 1082 |
static noinline_for_stack char *ip6_string(char *p, const char *addr, const char *fmt) |
8a27f7c90 lib/vsprintf.c: A... |
1083 1084 |
{ int i; |
7b9186f5e vsprintf: give it... |
1085 |
|
689afa7da printk: add %p6 f... |
1086 |
for (i = 0; i < 8; i++) { |
55036ba76 lib: rename pack_... |
1087 1088 |
p = hex_byte_pack(p, *addr++); p = hex_byte_pack(p, *addr++); |
8a27f7c90 lib/vsprintf.c: A... |
1089 |
if (fmt[0] == 'I' && i != 7) |
689afa7da printk: add %p6 f... |
1090 1091 1092 |
*p++ = ':'; } *p = '\0'; |
7b9186f5e vsprintf: give it... |
1093 |
|
8a27f7c90 lib/vsprintf.c: A... |
1094 1095 |
return p; } |
cf3b429b0 vsprintf.c: use n... |
1096 1097 1098 |
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... |
1099 1100 1101 1102 |
{ 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... |
1103 |
ip6_compressed_string(ip6_addr, addr); |
8a27f7c90 lib/vsprintf.c: A... |
1104 |
else |
eb78cd26b lib/vsprintf.c: A... |
1105 |
ip6_string(ip6_addr, addr, fmt); |
689afa7da printk: add %p6 f... |
1106 |
|
fef20d9c1 vsprintf: unify t... |
1107 |
return string(buf, end, ip6_addr, spec); |
689afa7da printk: add %p6 f... |
1108 |
} |
cf3b429b0 vsprintf.c: use n... |
1109 1110 1111 |
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, ... |
1112 |
{ |
8a27f7c90 lib/vsprintf.c: A... |
1113 |
char ip4_addr[sizeof("255.255.255.255")]; |
4aa996066 printk: add %I4, ... |
1114 |
|
0159f24ee lib/vsprintf.c: A... |
1115 |
ip4_string(ip4_addr, addr, fmt); |
4aa996066 printk: add %I4, ... |
1116 |
|
fef20d9c1 vsprintf: unify t... |
1117 |
return string(buf, end, ip4_addr, spec); |
4aa996066 printk: add %I4, ... |
1118 |
} |
cf3b429b0 vsprintf.c: use n... |
1119 |
static noinline_for_stack |
106796430 lib: vsprintf: ad... |
1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 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 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 |
char *ip6_addr_string_sa(char *buf, char *end, const struct sockaddr_in6 *sa, struct printf_spec spec, const char *fmt) { bool have_p = false, have_s = false, have_f = false, have_c = false; char ip6_addr[sizeof("[xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:255.255.255.255]") + sizeof(":12345") + sizeof("/123456789") + sizeof("%1234567890")]; char *p = ip6_addr, *pend = ip6_addr + sizeof(ip6_addr); const u8 *addr = (const u8 *) &sa->sin6_addr; char fmt6[2] = { fmt[0], '6' }; u8 off = 0; fmt++; while (isalpha(*++fmt)) { switch (*fmt) { case 'p': have_p = true; break; case 'f': have_f = true; break; case 's': have_s = true; break; case 'c': have_c = true; break; } } if (have_p || have_s || have_f) { *p = '['; off = 1; } if (fmt6[0] == 'I' && have_c) p = ip6_compressed_string(ip6_addr + off, addr); else p = ip6_string(ip6_addr + off, addr, fmt6); if (have_p || have_s || have_f) *p++ = ']'; if (have_p) { *p++ = ':'; p = number(p, pend, ntohs(sa->sin6_port), spec); } if (have_f) { *p++ = '/'; p = number(p, pend, ntohl(sa->sin6_flowinfo & IPV6_FLOWINFO_MASK), spec); } if (have_s) { *p++ = '%'; p = number(p, pend, sa->sin6_scope_id, spec); } *p = '\0'; return string(buf, end, ip6_addr, spec); } static noinline_for_stack char *ip4_addr_string_sa(char *buf, char *end, const struct sockaddr_in *sa, struct printf_spec spec, const char *fmt) { bool have_p = false; char *p, ip4_addr[sizeof("255.255.255.255") + sizeof(":12345")]; char *pend = ip4_addr + sizeof(ip4_addr); const u8 *addr = (const u8 *) &sa->sin_addr.s_addr; char fmt4[3] = { fmt[0], '4', 0 }; fmt++; while (isalpha(*++fmt)) { switch (*fmt) { case 'p': have_p = true; break; case 'h': case 'l': case 'n': case 'b': fmt4[2] = *fmt; break; } } p = ip4_string(ip4_addr, addr, fmt4); if (have_p) { *p++ = ':'; p = number(p, pend, ntohs(sa->sin_port), spec); } *p = '\0'; return string(buf, end, ip4_addr, spec); } static noinline_for_stack |
71dca95d5 lib/vsprintf: add... |
1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 |
char *escaped_string(char *buf, char *end, u8 *addr, struct printf_spec spec, const char *fmt) { bool found = true; int count = 1; unsigned int flags = 0; int len; if (spec.field_width == 0) return buf; /* nothing to print */ if (ZERO_OR_NULL_PTR(addr)) return string(buf, end, NULL, spec); /* NULL pointer */ do { switch (fmt[count++]) { case 'a': flags |= ESCAPE_ANY; break; case 'c': flags |= ESCAPE_SPECIAL; break; case 'h': flags |= ESCAPE_HEX; break; case 'n': flags |= ESCAPE_NULL; break; case 'o': flags |= ESCAPE_OCTAL; break; case 'p': flags |= ESCAPE_NP; break; case 's': flags |= ESCAPE_SPACE; break; default: found = false; break; } } while (found); if (!flags) flags = ESCAPE_ANY_NP; len = spec.field_width < 0 ? 1 : spec.field_width; |
41416f233 lib/string_helper... |
1265 1266 1267 1268 1269 1270 |
/* * string_escape_mem() writes as many characters as it can to * the given buffer, and returns the total size of the output * had the buffer been big enough. */ buf += string_escape_mem(addr, len, buf, buf < end ? end - buf : 0, flags, NULL); |
71dca95d5 lib/vsprintf: add... |
1271 1272 1273 1274 1275 |
return buf; } static noinline_for_stack |
cf3b429b0 vsprintf.c: use n... |
1276 1277 |
char *uuid_string(char *buf, char *end, const u8 *addr, struct printf_spec spec, const char *fmt) |
9ac6e44ee lib/vsprintf.c: a... |
1278 |
{ |
2b1b0d667 lib/uuid.c: intro... |
1279 |
char uuid[UUID_STRING_LEN + 1]; |
9ac6e44ee lib/vsprintf.c: a... |
1280 1281 |
char *p = uuid; int i; |
f9727a17d uuid: rename uuid... |
1282 |
const u8 *index = uuid_index; |
9ac6e44ee lib/vsprintf.c: a... |
1283 1284 1285 1286 1287 1288 |
bool uc = false; switch (*(++fmt)) { case 'L': uc = true; /* fall-through */ case 'l': |
f9727a17d uuid: rename uuid... |
1289 |
index = guid_index; |
9ac6e44ee lib/vsprintf.c: a... |
1290 1291 1292 1293 1294 1295 1296 |
break; case 'B': uc = true; break; } for (i = 0; i < 16; i++) { |
aa4ea1c3b lib/vsprintf: sim... |
1297 1298 1299 1300 |
if (uc) p = hex_byte_pack_upper(p, addr[index[i]]); else p = hex_byte_pack(p, addr[index[i]]); |
9ac6e44ee lib/vsprintf.c: a... |
1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 |
switch (i) { case 3: case 5: case 7: case 9: *p++ = '-'; break; } } *p = 0; |
9ac6e44ee lib/vsprintf.c: a... |
1312 1313 |
return string(buf, end, uuid, spec); } |
5b17aecfc lib/vsprintf: fac... |
1314 1315 |
static noinline_for_stack char *netdev_bits(char *buf, char *end, const void *addr, const char *fmt) |
c8f44affb net: introduce an... |
1316 |
{ |
5b17aecfc lib/vsprintf: fac... |
1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 |
unsigned long long num; int size; switch (fmt[1]) { case 'F': num = *(const netdev_features_t *)addr; size = sizeof(netdev_features_t); break; default: num = (unsigned long)addr; size = sizeof(unsigned long); break; } |
c8f44affb net: introduce an... |
1330 |
|
3cab1e711 lib/vsprintf: ref... |
1331 |
return special_hex_number(buf, end, num, size); |
c8f44affb net: introduce an... |
1332 |
} |
aaf07621b vsprintf: add %pa... |
1333 |
static noinline_for_stack |
3cab1e711 lib/vsprintf: ref... |
1334 |
char *address_val(char *buf, char *end, const void *addr, const char *fmt) |
aaf07621b vsprintf: add %pa... |
1335 1336 |
{ unsigned long long num; |
3cab1e711 lib/vsprintf: ref... |
1337 |
int size; |
aaf07621b vsprintf: add %pa... |
1338 1339 1340 1341 |
switch (fmt[1]) { case 'd': num = *(const dma_addr_t *)addr; |
3cab1e711 lib/vsprintf: ref... |
1342 |
size = sizeof(dma_addr_t); |
aaf07621b vsprintf: add %pa... |
1343 1344 1345 1346 |
break; case 'p': default: num = *(const phys_addr_t *)addr; |
3cab1e711 lib/vsprintf: ref... |
1347 |
size = sizeof(phys_addr_t); |
aaf07621b vsprintf: add %pa... |
1348 1349 |
break; } |
3cab1e711 lib/vsprintf: ref... |
1350 |
return special_hex_number(buf, end, num, size); |
aaf07621b vsprintf: add %pa... |
1351 |
} |
900cca294 lib/vsprintf: add... |
1352 1353 1354 1355 1356 1357 1358 1359 |
static noinline_for_stack char *clock(char *buf, char *end, struct clk *clk, struct printf_spec spec, const char *fmt) { if (!IS_ENABLED(CONFIG_HAVE_CLK) || !clk) return string(buf, end, NULL, spec); switch (fmt[1]) { |
900cca294 lib/vsprintf: add... |
1360 1361 1362 1363 1364 |
case 'n': default: #ifdef CONFIG_COMMON_CLK return string(buf, end, __clk_get_name(clk), spec); #else |
3cab1e711 lib/vsprintf: ref... |
1365 |
return special_hex_number(buf, end, (unsigned long)clk, sizeof(unsigned long)); |
900cca294 lib/vsprintf: add... |
1366 1367 1368 |
#endif } } |
edf14cdbf mm, printk: intro... |
1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 |
static char *format_flags(char *buf, char *end, unsigned long flags, const struct trace_print_flags *names) { unsigned long mask; const struct printf_spec strspec = { .field_width = -1, .precision = -1, }; const struct printf_spec numspec = { .flags = SPECIAL|SMALL, .field_width = -1, .precision = -1, .base = 16, }; for ( ; flags && names->name; names++) { mask = names->mask; if ((flags & mask) != mask) continue; buf = string(buf, end, names->name, strspec); flags &= ~mask; if (flags) { if (buf < end) *buf = '|'; buf++; } } if (flags) buf = number(buf, end, flags, numspec); return buf; } static noinline_for_stack char *flags_string(char *buf, char *end, void *flags_ptr, const char *fmt) { unsigned long flags; const struct trace_print_flags *names; switch (fmt[1]) { case 'p': flags = *(unsigned long *)flags_ptr; /* Remove zone id */ flags &= (1UL << NR_PAGEFLAGS) - 1; names = pageflag_names; break; case 'v': flags = *(unsigned long *)flags_ptr; names = vmaflag_names; break; case 'g': flags = *(gfp_t *)flags_ptr; names = gfpflag_names; break; default: WARN_ONCE(1, "Unsupported flags modifier: %c ", fmt[1]); return buf; } return format_flags(buf, end, flags, names); } |
ce4fecf1f vsprintf: Add %p ... |
1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 |
static const char *device_node_name_for_depth(const struct device_node *np, int depth) { for ( ; np && depth; depth--) np = np->parent; return kbasename(np->full_name); } static noinline_for_stack char *device_node_gen_full_name(const struct device_node *np, char *buf, char *end) { int depth; const struct device_node *parent = np->parent; static const struct printf_spec strspec = { .field_width = -1, .precision = -1, }; /* special case for root node */ if (!parent) return string(buf, end, "/", strspec); for (depth = 0; parent->parent; depth++) parent = parent->parent; for ( ; depth >= 0; depth--) { buf = string(buf, end, "/", strspec); buf = string(buf, end, device_node_name_for_depth(np, depth), strspec); } return buf; } static noinline_for_stack char *device_node_string(char *buf, char *end, struct device_node *dn, struct printf_spec spec, const char *fmt) { char tbuf[sizeof("xxxx") + 1]; const char *p; int ret; char *buf_start = buf; struct property *prop; bool has_mult, pass; static const struct printf_spec num_spec = { .flags = SMALL, .field_width = -1, .precision = -1, .base = 10, }; struct printf_spec str_spec = spec; str_spec.field_width = -1; if (!IS_ENABLED(CONFIG_OF)) return string(buf, end, "(!OF)", spec); if ((unsigned long)dn < PAGE_SIZE) return string(buf, end, "(null)", spec); /* simple case without anything any more format specifiers */ fmt++; if (fmt[0] == '\0' || strcspn(fmt,"fnpPFcC") > 0) fmt = "f"; for (pass = false; strspn(fmt,"fnpPFcC"); fmt++, pass = true) { if (pass) { if (buf < end) *buf = ':'; buf++; } switch (*fmt) { case 'f': /* full_name */ buf = device_node_gen_full_name(dn, buf, end); break; case 'n': /* name */ buf = string(buf, end, dn->name, str_spec); break; case 'p': /* phandle */ buf = number(buf, end, (unsigned int)dn->phandle, num_spec); break; case 'P': /* path-spec */ p = kbasename(of_node_full_name(dn)); if (!p[1]) p = "/"; buf = string(buf, end, p, str_spec); break; case 'F': /* flags */ tbuf[0] = of_node_check_flag(dn, OF_DYNAMIC) ? 'D' : '-'; tbuf[1] = of_node_check_flag(dn, OF_DETACHED) ? 'd' : '-'; tbuf[2] = of_node_check_flag(dn, OF_POPULATED) ? 'P' : '-'; tbuf[3] = of_node_check_flag(dn, OF_POPULATED_BUS) ? 'B' : '-'; tbuf[4] = 0; buf = string(buf, end, tbuf, str_spec); break; case 'c': /* major compatible string */ ret = of_property_read_string(dn, "compatible", &p); if (!ret) buf = string(buf, end, p, str_spec); break; case 'C': /* full compatible string */ has_mult = false; of_property_for_each_string(dn, "compatible", prop, p) { if (has_mult) buf = string(buf, end, ",", str_spec); buf = string(buf, end, "\"", str_spec); buf = string(buf, end, p, str_spec); buf = string(buf, end, "\"", str_spec); has_mult = true; } break; default: break; } } return widen_string(buf, buf - buf_start, end, spec); } |
411f05f12 vsprintf: Turn kp... |
1554 |
int kptr_restrict __read_mostly; |
455cd5ab3 kptr_restrict for... |
1555 |
|
4d8a743cd vsprintf: add inf... |
1556 1557 1558 1559 1560 |
/* * 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. * |
0b523769e checkpatch: add a... |
1561 1562 1563 |
* Please update scripts/checkpatch.pl when adding/removing conversion * characters. (Search for "check for vsprintf extension"). * |
332d2e783 Implement %pR to ... |
1564 1565 |
* Right now we handle: * |
0c8b946e3 vsprintf: introdu... |
1566 1567 |
* - 'F' For symbolic function descriptor pointers with offset * - 'f' For simple symbolic function names without offset |
0efb4d207 vsnprintf: remove... |
1568 1569 |
* - 'S' For symbolic direct pointers with offset * - 's' For symbolic direct pointers without offset |
b0d33c2bd vsprintf: Add ext... |
1570 |
* - '[FfSs]R' as above with __builtin_extract_return_addr() translation |
0f77a8d37 vsprintf: Introdu... |
1571 |
* - 'B' For backtraced symbolic direct pointers with offset |
c7dabef8a vsprintf: use %pR... |
1572 1573 |
* - 'R' For decoded struct resource, e.g., [mem 0x0-0x1f 64bit pref] * - 'r' For raw struct resource, e.g., [mem 0x0-0x1f flags 0x201] |
dbc760bcc lib/vsprintf: imp... |
1574 1575 1576 1577 |
* - 'b[l]' For a bitmap, the number of bits is determined by the field * width which must be explicitly specified either as part of the * format string '%32b[l]' or through '%*b[l]', [l] selects * range-list format instead of hex format |
dd45c9cf6 printk: add %pM f... |
1578 1579 |
* - 'M' For a 6-byte MAC address, it prints the address in the * usual colon-separated hex notation |
8a27f7c90 lib/vsprintf.c: A... |
1580 |
* - 'm' For a 6-byte MAC address, it prints the hex address without colons |
bc7259a2c lib/vsprintf.c: A... |
1581 |
* - 'MF' For a 6-byte MAC FDDI address, it prints the address |
c8e000604 lib: Kill bit-rev... |
1582 |
* with a dash-separated hex notation |
7c59154e7 lib/vsprintf: upd... |
1583 |
* - '[mM]R' For a 6-byte MAC address, Reverse order (Bluetooth) |
8a27f7c90 lib/vsprintf.c: A... |
1584 1585 1586 |
* - '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 |
106796430 lib: vsprintf: ad... |
1587 1588 1589 |
* [S][pfs] * Generic IPv4/IPv6 address (struct sockaddr *) that falls back to * [4] or [6] and is able to print port [p], flowinfo [f], scope [s] |
8a27f7c90 lib/vsprintf.c: A... |
1590 1591 1592 |
* - '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) |
106796430 lib: vsprintf: ad... |
1593 1594 1595 1596 1597 |
* [S][pfs] * Generic IPv4/IPv6 address (struct sockaddr *) that falls back to * [4] or [6] and is able to print port [p], flowinfo [f], scope [s] * - '[Ii][4S][hnbl]' IPv4 addresses in host, network, big or little endian order * - 'I[6S]c' for IPv6 addresses printed as specified by |
29cf519ee vsprintf: Update ... |
1598 |
* http://tools.ietf.org/html/rfc5952 |
71dca95d5 lib/vsprintf: add... |
1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 |
* - 'E[achnops]' For an escaped buffer, where rules are defined by combination * of the following flags (see string_escape_mem() for the * details): * a - ESCAPE_ANY * c - ESCAPE_SPECIAL * h - ESCAPE_HEX * n - ESCAPE_NULL * o - ESCAPE_OCTAL * p - ESCAPE_NP * s - ESCAPE_SPACE * By default ESCAPE_ANY_NP is used. |
9ac6e44ee lib/vsprintf.c: a... |
1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 |
* - '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... |
1621 1622 1623 1624 1625 |
* - '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... |
1626 |
* - 'K' For a kernel pointer that should be hidden from unprivileged users |
c8f44affb net: introduce an... |
1627 |
* - 'NF' For a netdev_features_t |
31550a16a vsprintf: add sup... |
1628 1629 1630 1631 1632 1633 1634 |
* - 'h[CDN]' For a variable-length buffer, it prints it as a hex string with * a certain separator (' ' by default): * C colon * D dash * N no separator * The maximum supported length is 64 bytes of the input. Consider * to use print_hex_dump() for the larger input. |
aaf07621b vsprintf: add %pa... |
1635 1636 |
* - 'a[pd]' For address types [p] phys_addr_t, [d] dma_addr_t and derivatives * (default assumed to be phys_addr_t, passed by reference) |
c0d92a57a lib/vsprintf.c: d... |
1637 1638 |
* - 'd[234]' For a dentry name (optionally 2-4 last components) * - 'D[234]' Same as 'd' but for a struct file |
1031bc589 lib/vsprintf: add... |
1639 |
* - 'g' For block_device name (gendisk + partition number) |
900cca294 lib/vsprintf: add... |
1640 1641 1642 1643 1644 |
* - 'C' For a clock, it prints the name (Common Clock Framework) or address * (legacy clock framework) of the clock * - 'Cn' For a clock, it prints the name (Common Clock Framework) or address * (legacy clock framework) of the clock * - 'Cr' For a clock, it prints the current rate of the clock |
edf14cdbf mm, printk: intro... |
1645 1646 1647 1648 1649 |
* - 'G' For flags to be printed as a collection of symbolic strings that would * construct the specific value. Supported flags given by option: * p page flags (see struct page) given as pointer to unsigned long * g gfp flags (GFP_* and __GFP_*) given as pointer to gfp_t * v vma flags (VM_*) given as pointer to unsigned long |
ce4fecf1f vsprintf: Add %p ... |
1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 |
* - 'O' For a kobject based struct. Must be one of the following: * - 'OF[fnpPcCF]' For a device tree object * Without any optional arguments prints the full_name * f device node full_name * n device node name * p device node phandle * P device node path spec (name + @unit) * F device node flags * c major compatible string * C full compatible string |
5e4ee7b13 printk: synchroni... |
1660 1661 |
* * ** Please update also Documentation/printk-formats.txt when making changes ** |
9ac6e44ee lib/vsprintf.c: a... |
1662 |
* |
332d2e783 Implement %pR to ... |
1663 1664 1665 |
* 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... |
1666 |
*/ |
cf3b429b0 vsprintf.c: use n... |
1667 1668 1669 |
static noinline_for_stack char *pointer(const char *fmt, char *buf, char *end, void *ptr, struct printf_spec spec) |
78a8bf69b vsprintf: split o... |
1670 |
{ |
80c9eb46f lib/vsprintf.c: r... |
1671 |
const int default_width = 2 * sizeof(void *); |
725fe002d vsprintf: correct... |
1672 |
|
9f36e2c44 printk: use %pK f... |
1673 |
if (!ptr && *fmt != 'K') { |
5e0579812 vsprintf.c: use d... |
1674 1675 1676 1677 1678 |
/* * Print (null) with the same width as a pointer so it makes * tabular output look nice. */ if (spec.field_width == -1) |
725fe002d vsprintf: correct... |
1679 |
spec.field_width = default_width; |
fef20d9c1 vsprintf: unify t... |
1680 |
return string(buf, end, "(null)", spec); |
5e0579812 vsprintf.c: use d... |
1681 |
} |
d97106ab5 Make %p print '(n... |
1682 |
|
0fe1ef24f vsprintf: add sup... |
1683 1684 |
switch (*fmt) { case 'F': |
0c8b946e3 vsprintf: introdu... |
1685 |
case 'f': |
0fe1ef24f vsprintf: add sup... |
1686 1687 1688 |
ptr = dereference_function_descriptor(ptr); /* Fallthrough */ case 'S': |
9ac6e44ee lib/vsprintf.c: a... |
1689 |
case 's': |
0f77a8d37 vsprintf: Introdu... |
1690 |
case 'B': |
b0d33c2bd vsprintf: Add ext... |
1691 |
return symbol_string(buf, end, ptr, spec, fmt); |
332d2e783 Implement %pR to ... |
1692 |
case 'R': |
c7dabef8a vsprintf: use %pR... |
1693 |
case 'r': |
fd95541e2 vsprintf: add %pR... |
1694 |
return resource_string(buf, end, ptr, spec, fmt); |
31550a16a vsprintf: add sup... |
1695 1696 |
case 'h': return hex_string(buf, end, ptr, spec, fmt); |
dbc760bcc lib/vsprintf: imp... |
1697 1698 1699 1700 1701 1702 1703 |
case 'b': switch (fmt[1]) { case 'l': return bitmap_list_string(buf, end, ptr, spec, fmt); default: return bitmap_string(buf, end, ptr, spec, fmt); } |
8a27f7c90 lib/vsprintf.c: A... |
1704 1705 |
case 'M': /* Colon separated: 00:01:02:03:04:05 */ case 'm': /* Contiguous: 000102030405 */ |
76597ff98 vsprintf: add %pM... |
1706 1707 |
/* [mM]F (FDDI) */ /* [mM]R (Reverse order; Bluetooth) */ |
8a27f7c90 lib/vsprintf.c: A... |
1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 |
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); |
106796430 lib: vsprintf: ad... |
1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 |
case 'S': { const union { struct sockaddr raw; struct sockaddr_in v4; struct sockaddr_in6 v6; } *sa = ptr; switch (sa->raw.sa_family) { case AF_INET: return ip4_addr_string_sa(buf, end, &sa->v4, spec, fmt); case AF_INET6: return ip6_addr_string_sa(buf, end, &sa->v6, spec, fmt); default: return string(buf, end, "(invalid address)", spec); }} |
8a27f7c90 lib/vsprintf.c: A... |
1738 |
} |
fef20d9c1 vsprintf: unify t... |
1739 |
break; |
71dca95d5 lib/vsprintf: add... |
1740 1741 |
case 'E': return escaped_string(buf, end, ptr, spec, fmt); |
9ac6e44ee lib/vsprintf.c: a... |
1742 1743 |
case 'U': return uuid_string(buf, end, ptr, spec, fmt); |
7db6f5fb6 vsprintf: Recursi... |
1744 |
case 'V': |
5756b76e4 vsprintf: make %p... |
1745 1746 1747 1748 1749 1750 1751 1752 1753 |
{ va_list va; va_copy(va, *((struct va_format *)ptr)->va); buf += vsnprintf(buf, end > buf ? end - buf : 0, ((struct va_format *)ptr)->fmt, va); va_end(va); return buf; } |
455cd5ab3 kptr_restrict for... |
1754 |
case 'K': |
312b4e226 vsprintf: check r... |
1755 1756 1757 1758 1759 |
switch (kptr_restrict) { case 0: /* Always print %pK values */ break; case 1: { |
7eb391299 vsprintf: kptr_re... |
1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 |
const struct cred *cred; /* * kptr_restrict==1 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 = default_width; return string(buf, end, "pK-error", spec); } |
312b4e226 vsprintf: check r... |
1771 1772 1773 1774 1775 1776 1777 1778 1779 |
/* * Only print the real pointer value if the current * process has CAP_SYSLOG and is running with the * same credentials it started with. This is because * access to files is checked at open() time, but %pK * checks permission at read() time. We don't want to * leak pointer values if a binary opens a file using * %pK and then elevates privileges before reading it. */ |
7eb391299 vsprintf: kptr_re... |
1780 |
cred = current_cred(); |
312b4e226 vsprintf: check r... |
1781 1782 1783 1784 1785 1786 1787 1788 1789 |
if (!has_capability_noaudit(current, CAP_SYSLOG) || !uid_eq(cred->euid, cred->uid) || !gid_eq(cred->egid, cred->gid)) ptr = NULL; break; } case 2: default: /* Always print 0's for %pK */ |
26297607e vsprintf: neaten ... |
1790 |
ptr = NULL; |
312b4e226 vsprintf: check r... |
1791 1792 |
break; } |
26297607e vsprintf: neaten ... |
1793 |
break; |
312b4e226 vsprintf: check r... |
1794 |
|
c8f44affb net: introduce an... |
1795 |
case 'N': |
5b17aecfc lib/vsprintf: fac... |
1796 |
return netdev_bits(buf, end, ptr, fmt); |
7d7992108 lib/vsprintf.c: a... |
1797 |
case 'a': |
3cab1e711 lib/vsprintf: ref... |
1798 |
return address_val(buf, end, ptr, fmt); |
4b6ccca70 add formats for d... |
1799 1800 |
case 'd': return dentry_name(buf, end, ptr, spec, fmt); |
900cca294 lib/vsprintf: add... |
1801 1802 |
case 'C': return clock(buf, end, ptr, spec, fmt); |
4b6ccca70 add formats for d... |
1803 1804 1805 1806 |
case 'D': return dentry_name(buf, end, ((const struct file *)ptr)->f_path.dentry, spec, fmt); |
1031bc589 lib/vsprintf: add... |
1807 1808 1809 1810 |
#ifdef CONFIG_BLOCK case 'g': return bdev_name(buf, end, ptr, spec, fmt); #endif |
edf14cdbf mm, printk: intro... |
1811 1812 |
case 'G': return flags_string(buf, end, ptr, fmt); |
ce4fecf1f vsprintf: Add %p ... |
1813 1814 1815 1816 1817 |
case 'O': switch (fmt[1]) { case 'F': return device_node_string(buf, end, ptr, spec, fmt + 1); } |
fef20d9c1 vsprintf: unify t... |
1818 1819 1820 |
} spec.flags |= SMALL; if (spec.field_width == -1) { |
725fe002d vsprintf: correct... |
1821 |
spec.field_width = default_width; |
fef20d9c1 vsprintf: unify t... |
1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 |
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 |
5b5e0928f lib/vsprintf.c: r... |
1839 |
* 'Z' changed to 'z' --adobriyan 2017-01-25 |
fef20d9c1 vsprintf: unify t... |
1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 |
* '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... |
1850 1851 |
static noinline_for_stack int format_decode(const char *fmt, struct printf_spec *spec) |
fef20d9c1 vsprintf: unify t... |
1852 1853 |
{ const char *start = fmt; |
d04841931 lib/vsprintf.c: e... |
1854 |
char qualifier; |
fef20d9c1 vsprintf: unify t... |
1855 1856 |
/* we finished early by reading the field width */ |
ed681a91a vsprintf: unify t... |
1857 |
if (spec->type == FORMAT_TYPE_WIDTH) { |
fef20d9c1 vsprintf: unify t... |
1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 |
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... |
1915 |
spec->type = FORMAT_TYPE_WIDTH; |
fef20d9c1 vsprintf: unify t... |
1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 |
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... |
1930 |
spec->type = FORMAT_TYPE_PRECISION; |
fef20d9c1 vsprintf: unify t... |
1931 1932 1933 1934 1935 1936 |
return ++fmt - start; } } qualifier: /* get the conversion qualifier */ |
d04841931 lib/vsprintf.c: e... |
1937 |
qualifier = 0; |
75fb8f269 lib: make _tolowe... |
1938 |
if (*fmt == 'h' || _tolower(*fmt) == 'l' || |
5b5e0928f lib/vsprintf.c: r... |
1939 |
*fmt == 'z' || *fmt == 't') { |
d04841931 lib/vsprintf.c: e... |
1940 1941 1942 1943 |
qualifier = *fmt++; if (unlikely(qualifier == *fmt)) { if (qualifier == 'l') { qualifier = 'L'; |
a4e94ef0d printk: add suppo... |
1944 |
++fmt; |
d04841931 lib/vsprintf.c: e... |
1945 1946 |
} else if (qualifier == 'h') { qualifier = 'H'; |
a4e94ef0d printk: add suppo... |
1947 1948 |
++fmt; } |
fef20d9c1 vsprintf: unify t... |
1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 |
} } /* 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; |
ffbfed03b lib/vsprintf.c: c... |
1965 |
return ++fmt - start; |
fef20d9c1 vsprintf: unify t... |
1966 |
|
fef20d9c1 vsprintf: unify t... |
1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 |
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... |
1985 |
spec->flags |= SIGN; |
fef20d9c1 vsprintf: unify t... |
1986 |
case 'u': |
4aa996066 printk: add %I4, ... |
1987 |
break; |
fef20d9c1 vsprintf: unify t... |
1988 |
|
708d96fd0 vsprintf: remove ... |
1989 1990 |
case 'n': /* |
b006f19b0 lib/vsprintf.c: h... |
1991 1992 1993 |
* Since %n poses a greater security risk than * utility, treat it as any other invalid or * unsupported format specifier. |
708d96fd0 vsprintf: remove ... |
1994 |
*/ |
708d96fd0 vsprintf: remove ... |
1995 |
/* Fall-through */ |
fef20d9c1 vsprintf: unify t... |
1996 |
default: |
b006f19b0 lib/vsprintf.c: h... |
1997 1998 |
WARN_ONCE(1, "Please remove unsupported %%%c in format string ", *fmt); |
fef20d9c1 vsprintf: unify t... |
1999 2000 |
spec->type = FORMAT_TYPE_INVALID; return fmt - start; |
0fe1ef24f vsprintf: add sup... |
2001 |
} |
fef20d9c1 vsprintf: unify t... |
2002 |
|
d04841931 lib/vsprintf.c: e... |
2003 |
if (qualifier == 'L') |
fef20d9c1 vsprintf: unify t... |
2004 |
spec->type = FORMAT_TYPE_LONG_LONG; |
d04841931 lib/vsprintf.c: e... |
2005 |
else if (qualifier == 'l') { |
51be17dff lib/vsprintf.c: e... |
2006 2007 |
BUILD_BUG_ON(FORMAT_TYPE_ULONG + SIGN != FORMAT_TYPE_LONG); spec->type = FORMAT_TYPE_ULONG + (spec->flags & SIGN); |
5b5e0928f lib/vsprintf.c: r... |
2008 |
} else if (qualifier == 'z') { |
fef20d9c1 vsprintf: unify t... |
2009 |
spec->type = FORMAT_TYPE_SIZE_T; |
d04841931 lib/vsprintf.c: e... |
2010 |
} else if (qualifier == 't') { |
fef20d9c1 vsprintf: unify t... |
2011 |
spec->type = FORMAT_TYPE_PTRDIFF; |
d04841931 lib/vsprintf.c: e... |
2012 |
} else if (qualifier == 'H') { |
51be17dff lib/vsprintf.c: e... |
2013 2014 |
BUILD_BUG_ON(FORMAT_TYPE_UBYTE + SIGN != FORMAT_TYPE_BYTE); spec->type = FORMAT_TYPE_UBYTE + (spec->flags & SIGN); |
d04841931 lib/vsprintf.c: e... |
2015 |
} else if (qualifier == 'h') { |
51be17dff lib/vsprintf.c: e... |
2016 2017 |
BUILD_BUG_ON(FORMAT_TYPE_USHORT + SIGN != FORMAT_TYPE_SHORT); spec->type = FORMAT_TYPE_USHORT + (spec->flags & SIGN); |
fef20d9c1 vsprintf: unify t... |
2018 |
} else { |
51be17dff lib/vsprintf.c: e... |
2019 2020 |
BUILD_BUG_ON(FORMAT_TYPE_UINT + SIGN != FORMAT_TYPE_INT); spec->type = FORMAT_TYPE_UINT + (spec->flags & SIGN); |
78a8bf69b vsprintf: split o... |
2021 |
} |
fef20d9c1 vsprintf: unify t... |
2022 2023 |
return ++fmt - start; |
78a8bf69b vsprintf: split o... |
2024 |
} |
4d72ba014 lib/vsprintf.c: w... |
2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 |
static void set_field_width(struct printf_spec *spec, int width) { spec->field_width = width; if (WARN_ONCE(spec->field_width != width, "field width %d too large", width)) { spec->field_width = clamp(width, -FIELD_WIDTH_MAX, FIELD_WIDTH_MAX); } } static void set_precision(struct printf_spec *spec, int prec) { spec->precision = prec; if (WARN_ONCE(spec->precision != prec, "precision %d too large", prec)) { spec->precision = clamp(prec, 0, PRECISION_MAX); } } |
1da177e4c Linux-2.6.12-rc2 |
2042 2043 2044 2045 2046 2047 2048 |
/** * 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 * |
d7ec9a05d lib/vsprintf.c: u... |
2049 2050 2051 |
* This function generally follows C99 vsnprintf, but has some * extensions and a few limitations: * |
6cc89134c kernel-api.rst: f... |
2052 2053 |
* - ``%n`` is unsupported * - ``%p*`` is handled by pointer() |
5e4ee7b13 printk: synchroni... |
2054 2055 2056 |
* * See pointer() or Documentation/printk-formats.txt for more * extensive description. |
20036fdca Add kerneldoc doc... |
2057 |
* |
6cc89134c kernel-api.rst: f... |
2058 |
* **Please update the documentation in both places when making changes** |
80f548e04 lib/vsprintf.c: r... |
2059 |
* |
1da177e4c Linux-2.6.12-rc2 |
2060 2061 2062 2063 |
* 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 ... |
2064 |
* (not including the trailing '\0'), use vscnprintf(). If the |
1da177e4c Linux-2.6.12-rc2 |
2065 2066 2067 |
* return is greater than or equal to @size, the resulting * string is truncated. * |
ba1835eb3 vsprintf: make co... |
2068 |
* If you're not already dealing with a va_list consider using snprintf(). |
1da177e4c Linux-2.6.12-rc2 |
2069 2070 2071 |
*/ int vsnprintf(char *buf, size_t size, const char *fmt, va_list args) { |
1da177e4c Linux-2.6.12-rc2 |
2072 |
unsigned long long num; |
d4be151b2 vsprintf: move lo... |
2073 |
char *str, *end; |
fef20d9c1 vsprintf: unify t... |
2074 |
struct printf_spec spec = {0}; |
1da177e4c Linux-2.6.12-rc2 |
2075 |
|
f796937a0 [PATCH] Fix bound... |
2076 2077 |
/* Reject out-of-range values early. Large positive sizes are used for unknown buffer sizes. */ |
2aa2f9e21 lib/vsprintf.c: i... |
2078 |
if (WARN_ON_ONCE(size > INT_MAX)) |
1da177e4c Linux-2.6.12-rc2 |
2079 |
return 0; |
1da177e4c Linux-2.6.12-rc2 |
2080 2081 |
str = buf; |
f796937a0 [PATCH] Fix bound... |
2082 |
end = buf + size; |
1da177e4c Linux-2.6.12-rc2 |
2083 |
|
f796937a0 [PATCH] Fix bound... |
2084 2085 2086 2087 |
/* Make sure end is always >= buf */ if (end < buf) { end = ((void *)-1); size = end - buf; |
1da177e4c Linux-2.6.12-rc2 |
2088 |
} |
fef20d9c1 vsprintf: unify t... |
2089 2090 |
while (*fmt) { const char *old_fmt = fmt; |
d4be151b2 vsprintf: move lo... |
2091 |
int read = format_decode(fmt, &spec); |
1da177e4c Linux-2.6.12-rc2 |
2092 |
|
fef20d9c1 vsprintf: unify t... |
2093 |
fmt += read; |
1da177e4c Linux-2.6.12-rc2 |
2094 |
|
fef20d9c1 vsprintf: unify t... |
2095 2096 2097 2098 2099 2100 2101 |
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 |
2102 |
} |
fef20d9c1 vsprintf: unify t... |
2103 2104 |
str += read; break; |
1da177e4c Linux-2.6.12-rc2 |
2105 |
} |
ed681a91a vsprintf: unify t... |
2106 |
case FORMAT_TYPE_WIDTH: |
4d72ba014 lib/vsprintf.c: w... |
2107 |
set_field_width(&spec, va_arg(args, int)); |
fef20d9c1 vsprintf: unify t... |
2108 |
break; |
1da177e4c Linux-2.6.12-rc2 |
2109 |
|
fef20d9c1 vsprintf: unify t... |
2110 |
case FORMAT_TYPE_PRECISION: |
4d72ba014 lib/vsprintf.c: w... |
2111 |
set_precision(&spec, va_arg(args, int)); |
fef20d9c1 vsprintf: unify t... |
2112 |
break; |
1da177e4c Linux-2.6.12-rc2 |
2113 |
|
d4be151b2 vsprintf: move lo... |
2114 2115 |
case FORMAT_TYPE_CHAR: { char c; |
fef20d9c1 vsprintf: unify t... |
2116 2117 |
if (!(spec.flags & LEFT)) { while (--spec.field_width > 0) { |
f796937a0 [PATCH] Fix bound... |
2118 |
if (str < end) |
1da177e4c Linux-2.6.12-rc2 |
2119 2120 |
*str = ' '; ++str; |
1da177e4c Linux-2.6.12-rc2 |
2121 |
|
fef20d9c1 vsprintf: unify t... |
2122 2123 2124 2125 2126 2127 2128 |
} } c = (unsigned char) va_arg(args, int); if (str < end) *str = c; ++str; while (--spec.field_width > 0) { |
f796937a0 [PATCH] Fix bound... |
2129 |
if (str < end) |
fef20d9c1 vsprintf: unify t... |
2130 |
*str = ' '; |
1da177e4c Linux-2.6.12-rc2 |
2131 |
++str; |
fef20d9c1 vsprintf: unify t... |
2132 2133 |
} break; |
d4be151b2 vsprintf: move lo... |
2134 |
} |
1da177e4c Linux-2.6.12-rc2 |
2135 |
|
fef20d9c1 vsprintf: unify t... |
2136 2137 2138 |
case FORMAT_TYPE_STR: str = string(str, end, va_arg(args, char *), spec); break; |
1da177e4c Linux-2.6.12-rc2 |
2139 |
|
fef20d9c1 vsprintf: unify t... |
2140 |
case FORMAT_TYPE_PTR: |
ffbfed03b lib/vsprintf.c: c... |
2141 |
str = pointer(fmt, str, end, va_arg(args, void *), |
fef20d9c1 vsprintf: unify t... |
2142 2143 2144 2145 |
spec); while (isalnum(*fmt)) fmt++; break; |
1da177e4c Linux-2.6.12-rc2 |
2146 |
|
fef20d9c1 vsprintf: unify t... |
2147 2148 2149 2150 2151 |
case FORMAT_TYPE_PERCENT_CHAR: if (str < end) *str = '%'; ++str; break; |
1da177e4c Linux-2.6.12-rc2 |
2152 |
|
fef20d9c1 vsprintf: unify t... |
2153 |
case FORMAT_TYPE_INVALID: |
b006f19b0 lib/vsprintf.c: h... |
2154 2155 2156 2157 2158 2159 2160 2161 2162 |
/* * Presumably the arguments passed gcc's type * checking, but there is no safe or sane way * for us to continue parsing the format and * fetching from the va_list; the remaining * specifiers and arguments would be out of * sync. */ goto out; |
fef20d9c1 vsprintf: unify t... |
2163 |
|
fef20d9c1 vsprintf: unify t... |
2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 |
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: |
ef1249602 lib/vsprintf.c: f... |
2176 2177 2178 2179 |
if (spec.flags & SIGN) num = va_arg(args, ssize_t); else num = va_arg(args, size_t); |
fef20d9c1 vsprintf: unify t... |
2180 2181 2182 2183 |
break; case FORMAT_TYPE_PTRDIFF: num = va_arg(args, ptrdiff_t); break; |
a4e94ef0d printk: add suppo... |
2184 2185 2186 2187 2188 2189 |
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... |
2190 2191 2192 2193 2194 2195 |
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... |
2196 2197 |
case FORMAT_TYPE_INT: num = (int) va_arg(args, int); |
fef20d9c1 vsprintf: unify t... |
2198 2199 2200 2201 2202 2203 |
break; default: num = va_arg(args, unsigned int); } str = number(str, end, num, spec); |
1da177e4c Linux-2.6.12-rc2 |
2204 |
} |
1da177e4c Linux-2.6.12-rc2 |
2205 |
} |
fef20d9c1 vsprintf: unify t... |
2206 |
|
b006f19b0 lib/vsprintf.c: h... |
2207 |
out: |
f796937a0 [PATCH] Fix bound... |
2208 2209 2210 2211 |
if (size > 0) { if (str < end) *str = '\0'; else |
0a6047eef Fix vsnprintf off... |
2212 |
end[-1] = '\0'; |
f796937a0 [PATCH] Fix bound... |
2213 |
} |
fef20d9c1 vsprintf: unify t... |
2214 |
|
f796937a0 [PATCH] Fix bound... |
2215 |
/* the trailing null byte doesn't count towards the total */ |
1da177e4c Linux-2.6.12-rc2 |
2216 |
return str-buf; |
fef20d9c1 vsprintf: unify t... |
2217 |
|
1da177e4c Linux-2.6.12-rc2 |
2218 |
} |
1da177e4c Linux-2.6.12-rc2 |
2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 |
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... |
2229 |
* the @buf not including the trailing '\0'. If @size is == 0 the function |
1da177e4c Linux-2.6.12-rc2 |
2230 2231 |
* returns 0. * |
ba1835eb3 vsprintf: make co... |
2232 |
* If you're not already dealing with a va_list consider using scnprintf(). |
20036fdca Add kerneldoc doc... |
2233 2234 |
* * See the vsnprintf() documentation for format string extensions over C99. |
1da177e4c Linux-2.6.12-rc2 |
2235 2236 2237 2238 |
*/ int vscnprintf(char *buf, size_t size, const char *fmt, va_list args) { int i; |
7b9186f5e vsprintf: give it... |
2239 |
i = vsnprintf(buf, size, fmt, args); |
b921c69fb lib/vsprintf.c: f... |
2240 2241 2242 2243 2244 |
if (likely(i < size)) return i; if (size != 0) return size - 1; return 0; |
1da177e4c Linux-2.6.12-rc2 |
2245 |
} |
1da177e4c Linux-2.6.12-rc2 |
2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 |
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... |
2259 2260 |
* * See the vsnprintf() documentation for format string extensions over C99. |
1da177e4c Linux-2.6.12-rc2 |
2261 |
*/ |
7b9186f5e vsprintf: give it... |
2262 |
int snprintf(char *buf, size_t size, const char *fmt, ...) |
1da177e4c Linux-2.6.12-rc2 |
2263 2264 2265 2266 2267 |
{ va_list args; int i; va_start(args, fmt); |
7b9186f5e vsprintf: give it... |
2268 |
i = vsnprintf(buf, size, fmt, args); |
1da177e4c Linux-2.6.12-rc2 |
2269 |
va_end(args); |
7b9186f5e vsprintf: give it... |
2270 |
|
1da177e4c Linux-2.6.12-rc2 |
2271 2272 |
return i; } |
1da177e4c Linux-2.6.12-rc2 |
2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 |
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... |
2283 |
* the trailing '\0'. If @size is == 0 the function returns 0. |
1da177e4c Linux-2.6.12-rc2 |
2284 |
*/ |
7b9186f5e vsprintf: give it... |
2285 |
int scnprintf(char *buf, size_t size, const char *fmt, ...) |
1da177e4c Linux-2.6.12-rc2 |
2286 2287 2288 2289 2290 |
{ va_list args; int i; va_start(args, fmt); |
b921c69fb lib/vsprintf.c: f... |
2291 |
i = vscnprintf(buf, size, fmt, args); |
1da177e4c Linux-2.6.12-rc2 |
2292 |
va_end(args); |
7b9186f5e vsprintf: give it... |
2293 |
|
b921c69fb lib/vsprintf.c: f... |
2294 |
return i; |
1da177e4c Linux-2.6.12-rc2 |
2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 |
} 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 ... |
2305 |
* into @buf. Use vsnprintf() or vscnprintf() in order to avoid |
1da177e4c Linux-2.6.12-rc2 |
2306 2307 |
* buffer overflows. * |
ba1835eb3 vsprintf: make co... |
2308 |
* If you're not already dealing with a va_list consider using sprintf(). |
20036fdca Add kerneldoc doc... |
2309 2310 |
* * See the vsnprintf() documentation for format string extensions over C99. |
1da177e4c Linux-2.6.12-rc2 |
2311 2312 2313 2314 2315 |
*/ int vsprintf(char *buf, const char *fmt, va_list args) { return vsnprintf(buf, INT_MAX, fmt, args); } |
1da177e4c Linux-2.6.12-rc2 |
2316 2317 2318 2319 2320 2321 2322 2323 2324 |
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 ... |
2325 |
* into @buf. Use snprintf() or scnprintf() in order to avoid |
1da177e4c Linux-2.6.12-rc2 |
2326 |
* buffer overflows. |
20036fdca Add kerneldoc doc... |
2327 2328 |
* * See the vsnprintf() documentation for format string extensions over C99. |
1da177e4c Linux-2.6.12-rc2 |
2329 |
*/ |
7b9186f5e vsprintf: give it... |
2330 |
int sprintf(char *buf, const char *fmt, ...) |
1da177e4c Linux-2.6.12-rc2 |
2331 2332 2333 2334 2335 |
{ va_list args; int i; va_start(args, fmt); |
7b9186f5e vsprintf: give it... |
2336 |
i = vsnprintf(buf, INT_MAX, fmt, args); |
1da177e4c Linux-2.6.12-rc2 |
2337 |
va_end(args); |
7b9186f5e vsprintf: give it... |
2338 |
|
1da177e4c Linux-2.6.12-rc2 |
2339 2340 |
return i; } |
1da177e4c Linux-2.6.12-rc2 |
2341 |
EXPORT_SYMBOL(sprintf); |
4370aa4aa vsprintf: add bin... |
2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 |
#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 |
da3dae54e Documentation: Do... |
2357 |
* is skipped. |
4370aa4aa vsprintf: add bin... |
2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 |
* * 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... |
2368 |
struct printf_spec spec = {0}; |
4370aa4aa vsprintf: add bin... |
2369 |
char *str, *end; |
4370aa4aa vsprintf: add bin... |
2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 |
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... |
2393 |
while (*fmt) { |
d4be151b2 vsprintf: move lo... |
2394 |
int read = format_decode(fmt, &spec); |
4370aa4aa vsprintf: add bin... |
2395 |
|
fef20d9c1 vsprintf: unify t... |
2396 |
fmt += read; |
4370aa4aa vsprintf: add bin... |
2397 |
|
fef20d9c1 vsprintf: unify t... |
2398 2399 |
switch (spec.type) { case FORMAT_TYPE_NONE: |
d4be151b2 vsprintf: move lo... |
2400 |
case FORMAT_TYPE_PERCENT_CHAR: |
fef20d9c1 vsprintf: unify t... |
2401 |
break; |
b006f19b0 lib/vsprintf.c: h... |
2402 2403 |
case FORMAT_TYPE_INVALID: goto out; |
fef20d9c1 vsprintf: unify t... |
2404 |
|
ed681a91a vsprintf: unify t... |
2405 |
case FORMAT_TYPE_WIDTH: |
fef20d9c1 vsprintf: unify t... |
2406 2407 2408 2409 2410 |
case FORMAT_TYPE_PRECISION: save_arg(int); break; case FORMAT_TYPE_CHAR: |
4370aa4aa vsprintf: add bin... |
2411 |
save_arg(char); |
fef20d9c1 vsprintf: unify t... |
2412 2413 2414 |
break; case FORMAT_TYPE_STR: { |
4370aa4aa vsprintf: add bin... |
2415 2416 |
const char *save_str = va_arg(args, char *); size_t len; |
6c3566341 vsprintf: pre-cal... |
2417 |
|
4370aa4aa vsprintf: add bin... |
2418 2419 |
if ((unsigned long)save_str > (unsigned long)-PAGE_SIZE || (unsigned long)save_str < PAGE_SIZE) |
0f4f81dce vsprintf: factori... |
2420 |
save_str = "(null)"; |
6c3566341 vsprintf: pre-cal... |
2421 2422 2423 2424 |
len = strlen(save_str) + 1; if (str + len < end) memcpy(str, save_str, len); str += len; |
fef20d9c1 vsprintf: unify t... |
2425 |
break; |
4370aa4aa vsprintf: add bin... |
2426 |
} |
fef20d9c1 vsprintf: unify t... |
2427 2428 |
case FORMAT_TYPE_PTR: |
4370aa4aa vsprintf: add bin... |
2429 2430 |
save_arg(void *); /* skip all alphanumeric pointer suffixes */ |
fef20d9c1 vsprintf: unify t... |
2431 |
while (isalnum(*fmt)) |
4370aa4aa vsprintf: add bin... |
2432 |
fmt++; |
fef20d9c1 vsprintf: unify t... |
2433 |
break; |
fef20d9c1 vsprintf: unify t... |
2434 2435 2436 2437 |
default: switch (spec.type) { case FORMAT_TYPE_LONG_LONG: |
4370aa4aa vsprintf: add bin... |
2438 |
save_arg(long long); |
fef20d9c1 vsprintf: unify t... |
2439 2440 2441 |
break; case FORMAT_TYPE_ULONG: case FORMAT_TYPE_LONG: |
4370aa4aa vsprintf: add bin... |
2442 |
save_arg(unsigned long); |
fef20d9c1 vsprintf: unify t... |
2443 2444 |
break; case FORMAT_TYPE_SIZE_T: |
4370aa4aa vsprintf: add bin... |
2445 |
save_arg(size_t); |
fef20d9c1 vsprintf: unify t... |
2446 2447 |
break; case FORMAT_TYPE_PTRDIFF: |
4370aa4aa vsprintf: add bin... |
2448 |
save_arg(ptrdiff_t); |
fef20d9c1 vsprintf: unify t... |
2449 |
break; |
a4e94ef0d printk: add suppo... |
2450 2451 2452 2453 |
case FORMAT_TYPE_UBYTE: case FORMAT_TYPE_BYTE: save_arg(char); break; |
fef20d9c1 vsprintf: unify t... |
2454 2455 |
case FORMAT_TYPE_USHORT: case FORMAT_TYPE_SHORT: |
4370aa4aa vsprintf: add bin... |
2456 |
save_arg(short); |
fef20d9c1 vsprintf: unify t... |
2457 2458 |
break; default: |
4370aa4aa vsprintf: add bin... |
2459 |
save_arg(int); |
fef20d9c1 vsprintf: unify t... |
2460 |
} |
4370aa4aa vsprintf: add bin... |
2461 2462 |
} } |
fef20d9c1 vsprintf: unify t... |
2463 |
|
b006f19b0 lib/vsprintf.c: h... |
2464 |
out: |
7b9186f5e vsprintf: give it... |
2465 |
return (u32 *)(PTR_ALIGN(str, sizeof(u32))) - bin_buf; |
fef20d9c1 vsprintf: unify t... |
2466 |
#undef save_arg |
4370aa4aa vsprintf: add bin... |
2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 |
} 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... |
2482 |
* see vsnprintf comment for details. |
4370aa4aa vsprintf: add bin... |
2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 |
* * 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... |
2494 |
struct printf_spec spec = {0}; |
d4be151b2 vsprintf: move lo... |
2495 2496 |
char *str, *end; const char *args = (const char *)bin_buf; |
4370aa4aa vsprintf: add bin... |
2497 |
|
762abb515 lib/vsprintf.c: a... |
2498 |
if (WARN_ON_ONCE(size > INT_MAX)) |
4370aa4aa vsprintf: add bin... |
2499 |
return 0; |
4370aa4aa vsprintf: add bin... |
2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 |
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... |
2524 |
while (*fmt) { |
fef20d9c1 vsprintf: unify t... |
2525 |
const char *old_fmt = fmt; |
d4be151b2 vsprintf: move lo... |
2526 |
int read = format_decode(fmt, &spec); |
4370aa4aa vsprintf: add bin... |
2527 |
|
fef20d9c1 vsprintf: unify t... |
2528 |
fmt += read; |
4370aa4aa vsprintf: add bin... |
2529 |
|
fef20d9c1 vsprintf: unify t... |
2530 2531 2532 2533 2534 2535 2536 |
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... |
2537 |
} |
fef20d9c1 vsprintf: unify t... |
2538 2539 |
str += read; break; |
4370aa4aa vsprintf: add bin... |
2540 |
} |
ed681a91a vsprintf: unify t... |
2541 |
case FORMAT_TYPE_WIDTH: |
4d72ba014 lib/vsprintf.c: w... |
2542 |
set_field_width(&spec, get_arg(int)); |
fef20d9c1 vsprintf: unify t... |
2543 |
break; |
4370aa4aa vsprintf: add bin... |
2544 |
|
fef20d9c1 vsprintf: unify t... |
2545 |
case FORMAT_TYPE_PRECISION: |
4d72ba014 lib/vsprintf.c: w... |
2546 |
set_precision(&spec, get_arg(int)); |
fef20d9c1 vsprintf: unify t... |
2547 |
break; |
4370aa4aa vsprintf: add bin... |
2548 |
|
d4be151b2 vsprintf: move lo... |
2549 2550 |
case FORMAT_TYPE_CHAR: { char c; |
fef20d9c1 vsprintf: unify t... |
2551 2552 |
if (!(spec.flags & LEFT)) { while (--spec.field_width > 0) { |
4370aa4aa vsprintf: add bin... |
2553 2554 2555 2556 2557 2558 2559 2560 2561 |
if (str < end) *str = ' '; ++str; } } c = (unsigned char) get_arg(char); if (str < end) *str = c; ++str; |
fef20d9c1 vsprintf: unify t... |
2562 |
while (--spec.field_width > 0) { |
4370aa4aa vsprintf: add bin... |
2563 2564 2565 2566 |
if (str < end) *str = ' '; ++str; } |
fef20d9c1 vsprintf: unify t... |
2567 |
break; |
d4be151b2 vsprintf: move lo... |
2568 |
} |
4370aa4aa vsprintf: add bin... |
2569 |
|
fef20d9c1 vsprintf: unify t... |
2570 |
case FORMAT_TYPE_STR: { |
4370aa4aa vsprintf: add bin... |
2571 |
const char *str_arg = args; |
d4be151b2 vsprintf: move lo... |
2572 |
args += strlen(str_arg) + 1; |
fef20d9c1 vsprintf: unify t... |
2573 2574 |
str = string(str, end, (char *)str_arg, spec); break; |
4370aa4aa vsprintf: add bin... |
2575 |
} |
fef20d9c1 vsprintf: unify t... |
2576 |
case FORMAT_TYPE_PTR: |
ffbfed03b lib/vsprintf.c: c... |
2577 |
str = pointer(fmt, str, end, get_arg(void *), spec); |
fef20d9c1 vsprintf: unify t... |
2578 |
while (isalnum(*fmt)) |
4370aa4aa vsprintf: add bin... |
2579 |
fmt++; |
fef20d9c1 vsprintf: unify t... |
2580 |
break; |
4370aa4aa vsprintf: add bin... |
2581 |
|
fef20d9c1 vsprintf: unify t... |
2582 |
case FORMAT_TYPE_PERCENT_CHAR: |
4370aa4aa vsprintf: add bin... |
2583 2584 2585 |
if (str < end) *str = '%'; ++str; |
fef20d9c1 vsprintf: unify t... |
2586 |
break; |
b006f19b0 lib/vsprintf.c: h... |
2587 2588 |
case FORMAT_TYPE_INVALID: goto out; |
d4be151b2 vsprintf: move lo... |
2589 2590 |
default: { unsigned long long num; |
fef20d9c1 vsprintf: unify t... |
2591 2592 2593 2594 2595 2596 |
switch (spec.type) { case FORMAT_TYPE_LONG_LONG: num = get_arg(long long); break; case FORMAT_TYPE_ULONG: |
fef20d9c1 vsprintf: unify t... |
2597 2598 2599 2600 2601 2602 2603 2604 2605 |
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... |
2606 2607 2608 2609 2610 2611 |
case FORMAT_TYPE_UBYTE: num = get_arg(unsigned char); break; case FORMAT_TYPE_BYTE: num = get_arg(signed char); break; |
fef20d9c1 vsprintf: unify t... |
2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 |
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... |
2626 2627 2628 |
} /* default: */ } /* switch(spec.type) */ } /* while(*fmt) */ |
fef20d9c1 vsprintf: unify t... |
2629 |
|
b006f19b0 lib/vsprintf.c: h... |
2630 |
out: |
4370aa4aa vsprintf: add bin... |
2631 2632 2633 2634 2635 2636 |
if (size > 0) { if (str < end) *str = '\0'; else end[-1] = '\0'; } |
fef20d9c1 vsprintf: unify t... |
2637 |
|
4370aa4aa vsprintf: add bin... |
2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 2661 2662 |
#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... |
2663 |
|
4370aa4aa vsprintf: add bin... |
2664 2665 2666 2667 2668 |
return ret; } EXPORT_SYMBOL_GPL(bprintf); #endif /* CONFIG_BINARY_PRINTF */ |
1da177e4c Linux-2.6.12-rc2 |
2669 2670 2671 2672 2673 2674 |
/** * vsscanf - Unformat a buffer into a list of arguments * @buf: input buffer * @fmt: format of buffer * @args: arguments */ |
7b9186f5e vsprintf: give it... |
2675 |
int vsscanf(const char *buf, const char *fmt, va_list args) |
1da177e4c Linux-2.6.12-rc2 |
2676 2677 2678 2679 2680 |
{ const char *str = buf; char *next; char digit; int num = 0; |
ef0658f3d vsprintf.c: Reduc... |
2681 |
u8 qualifier; |
53809751a sscanf: don't ign... |
2682 2683 2684 2685 2686 |
unsigned int base; union { long long s; unsigned long long u; } val; |
ef0658f3d vsprintf.c: Reduc... |
2687 |
s16 field_width; |
d4be151b2 vsprintf: move lo... |
2688 |
bool is_sign; |
1da177e4c Linux-2.6.12-rc2 |
2689 |
|
da99075c1 lib/vsprintf.c: i... |
2690 |
while (*fmt) { |
1da177e4c Linux-2.6.12-rc2 |
2691 2692 2693 2694 2695 |
/* 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... |
2696 2697 |
fmt = skip_spaces(++fmt); str = skip_spaces(str); |
1da177e4c Linux-2.6.12-rc2 |
2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 |
} /* 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... |
2710 |
|
1da177e4c Linux-2.6.12-rc2 |
2711 2712 2713 2714 |
/* skip this conversion. * advance both strings to next white space */ if (*fmt == '*') { |
da99075c1 lib/vsprintf.c: i... |
2715 2716 |
if (!*str) break; |
f9310b2f9 sscanf: implement... |
2717 2718 2719 2720 |
while (!isspace(*fmt) && *fmt != '%' && *fmt) { /* '%*[' not yet supported, invalid format */ if (*fmt == '[') return num; |
1da177e4c Linux-2.6.12-rc2 |
2721 |
fmt++; |
f9310b2f9 sscanf: implement... |
2722 |
} |
1da177e4c Linux-2.6.12-rc2 |
2723 2724 2725 2726 2727 2728 2729 |
while (!isspace(*str) && *str) str++; continue; } /* get field width */ field_width = -1; |
53809751a sscanf: don't ign... |
2730 |
if (isdigit(*fmt)) { |
1da177e4c Linux-2.6.12-rc2 |
2731 |
field_width = skip_atoi(&fmt); |
53809751a sscanf: don't ign... |
2732 2733 2734 |
if (field_width <= 0) break; } |
1da177e4c Linux-2.6.12-rc2 |
2735 2736 2737 |
/* get conversion qualifier */ qualifier = -1; |
75fb8f269 lib: make _tolowe... |
2738 |
if (*fmt == 'h' || _tolower(*fmt) == 'l' || |
5b5e0928f lib/vsprintf.c: r... |
2739 |
*fmt == 'z') { |
1da177e4c Linux-2.6.12-rc2 |
2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 |
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 |
2751 |
|
da99075c1 lib/vsprintf.c: i... |
2752 2753 2754 2755 2756 2757 2758 2759 2760 2761 2762 |
if (!*fmt) break; if (*fmt == 'n') { /* return number of characters read so far */ *va_arg(args, int *) = str - buf; ++fmt; continue; } if (!*str) |
1da177e4c Linux-2.6.12-rc2 |
2763 |
break; |
d4be151b2 vsprintf: move lo... |
2764 |
base = 10; |
3f623eba2 lib/vsprintf.c: f... |
2765 |
is_sign = false; |
d4be151b2 vsprintf: move lo... |
2766 |
|
7b9186f5e vsprintf: give it... |
2767 |
switch (*fmt++) { |
1da177e4c Linux-2.6.12-rc2 |
2768 2769 |
case 'c': { |
7b9186f5e vsprintf: give it... |
2770 |
char *s = (char *)va_arg(args, char*); |
1da177e4c Linux-2.6.12-rc2 |
2771 2772 2773 2774 2775 2776 2777 2778 2779 2780 |
if (field_width == -1) field_width = 1; do { *s++ = *str++; } while (--field_width > 0 && *str); num++; } continue; case 's': { |
7b9186f5e vsprintf: give it... |
2781 2782 |
char *s = (char *)va_arg(args, char *); if (field_width == -1) |
4be929be3 kernel-wide: repl... |
2783 |
field_width = SHRT_MAX; |
1da177e4c Linux-2.6.12-rc2 |
2784 |
/* first, skip leading white space in buffer */ |
e7d2860b6 tree-wide: conver... |
2785 |
str = skip_spaces(str); |
1da177e4c Linux-2.6.12-rc2 |
2786 2787 |
/* now copy until next white space */ |
7b9186f5e vsprintf: give it... |
2788 |
while (*str && !isspace(*str) && field_width--) |
1da177e4c Linux-2.6.12-rc2 |
2789 |
*s++ = *str++; |
1da177e4c Linux-2.6.12-rc2 |
2790 2791 2792 2793 |
*s = '\0'; num++; } continue; |
f9310b2f9 sscanf: implement... |
2794 2795 2796 2797 2798 2799 2800 2801 2802 2803 2804 2805 2806 2807 2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 |
/* * Warning: This implementation of the '[' conversion specifier * deviates from its glibc counterpart in the following ways: * (1) It does NOT support ranges i.e. '-' is NOT a special * character * (2) It cannot match the closing bracket ']' itself * (3) A field width is required * (4) '%*[' (discard matching input) is currently not supported * * Example usage: * ret = sscanf("00:0a:95","%2[^:]:%2[^:]:%2[^:]", * buf1, buf2, buf3); * if (ret < 3) * // etc.. */ case '[': { char *s = (char *)va_arg(args, char *); DECLARE_BITMAP(set, 256) = {0}; unsigned int len = 0; bool negate = (*fmt == '^'); /* field width is required */ if (field_width == -1) return num; if (negate) ++fmt; for ( ; *fmt && *fmt != ']'; ++fmt, ++len) set_bit((u8)*fmt, set); /* no ']' or no character set found */ if (!*fmt || !len) return num; ++fmt; if (negate) { bitmap_complement(set, set, 256); /* exclude null '\0' byte */ clear_bit(0, set); } /* match must be non-empty */ if (!test_bit((u8)*str, set)) return num; while (test_bit((u8)*str, set) && field_width--) *s++ = *str++; *s = '\0'; ++num; } continue; |
1da177e4c Linux-2.6.12-rc2 |
2847 2848 2849 2850 2851 2852 2853 2854 |
case 'o': base = 8; break; case 'x': case 'X': base = 16; break; case 'i': |
7b9186f5e vsprintf: give it... |
2855 |
base = 0; |
1da177e4c Linux-2.6.12-rc2 |
2856 |
case 'd': |
3f623eba2 lib/vsprintf.c: f... |
2857 |
is_sign = true; |
1da177e4c Linux-2.6.12-rc2 |
2858 2859 2860 2861 |
case 'u': break; case '%': /* looking for '%' in str */ |
7b9186f5e vsprintf: give it... |
2862 |
if (*str++ != '%') |
1da177e4c Linux-2.6.12-rc2 |
2863 2864 2865 2866 2867 2868 2869 2870 2871 2872 |
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... |
2873 |
str = skip_spaces(str); |
1da177e4c Linux-2.6.12-rc2 |
2874 2875 2876 2877 2878 2879 |
digit = *str; if (is_sign && digit == '-') digit = *(str + 1); if (!digit |
7b9186f5e vsprintf: give it... |
2880 2881 2882 2883 2884 |
|| (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 |
2885 |
|
53809751a sscanf: don't ign... |
2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 |
if (is_sign) val.s = qualifier != 'L' ? simple_strtol(str, &next, base) : simple_strtoll(str, &next, base); else val.u = qualifier != 'L' ? simple_strtoul(str, &next, base) : simple_strtoull(str, &next, base); if (field_width > 0 && next - str > field_width) { if (base == 0) _parse_integer_fixup_radix(str, &base); while (next - str > field_width) { if (is_sign) val.s = div_s64(val.s, base); else val.u = div_u64(val.u, base); --next; } } |
7b9186f5e vsprintf: give it... |
2906 |
switch (qualifier) { |
1da177e4c Linux-2.6.12-rc2 |
2907 |
case 'H': /* that's 'hh' in format */ |
53809751a sscanf: don't ign... |
2908 2909 2910 2911 |
if (is_sign) *va_arg(args, signed char *) = val.s; else *va_arg(args, unsigned char *) = val.u; |
1da177e4c Linux-2.6.12-rc2 |
2912 2913 |
break; case 'h': |
53809751a sscanf: don't ign... |
2914 2915 2916 2917 |
if (is_sign) *va_arg(args, short *) = val.s; else *va_arg(args, unsigned short *) = val.u; |
1da177e4c Linux-2.6.12-rc2 |
2918 2919 |
break; case 'l': |
53809751a sscanf: don't ign... |
2920 2921 2922 2923 |
if (is_sign) *va_arg(args, long *) = val.s; else *va_arg(args, unsigned long *) = val.u; |
1da177e4c Linux-2.6.12-rc2 |
2924 2925 |
break; case 'L': |
53809751a sscanf: don't ign... |
2926 2927 2928 2929 |
if (is_sign) *va_arg(args, long long *) = val.s; else *va_arg(args, unsigned long long *) = val.u; |
1da177e4c Linux-2.6.12-rc2 |
2930 |
break; |
1da177e4c Linux-2.6.12-rc2 |
2931 |
case 'z': |
53809751a sscanf: don't ign... |
2932 2933 |
*va_arg(args, size_t *) = val.u; break; |
1da177e4c Linux-2.6.12-rc2 |
2934 |
default: |
53809751a sscanf: don't ign... |
2935 2936 2937 2938 |
if (is_sign) *va_arg(args, int *) = val.s; else *va_arg(args, unsigned int *) = val.u; |
1da177e4c Linux-2.6.12-rc2 |
2939 2940 2941 2942 2943 2944 2945 2946 |
break; } num++; if (!next) break; str = next; } |
c6b40d16d fix sscanf %n mat... |
2947 |
|
1da177e4c Linux-2.6.12-rc2 |
2948 2949 |
return num; } |
1da177e4c Linux-2.6.12-rc2 |
2950 2951 2952 2953 2954 2955 2956 2957 |
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... |
2958 |
int sscanf(const char *buf, const char *fmt, ...) |
1da177e4c Linux-2.6.12-rc2 |
2959 2960 2961 |
{ va_list args; int i; |
7b9186f5e vsprintf: give it... |
2962 2963 |
va_start(args, fmt); i = vsscanf(buf, fmt, args); |
1da177e4c Linux-2.6.12-rc2 |
2964 |
va_end(args); |
7b9186f5e vsprintf: give it... |
2965 |
|
1da177e4c Linux-2.6.12-rc2 |
2966 2967 |
return i; } |
1da177e4c Linux-2.6.12-rc2 |
2968 |
EXPORT_SYMBOL(sscanf); |