diff options
Diffstat (limited to 'net/openbgpd/files/patch-bgpctl_fmt_scaled.c')
| -rw-r--r-- | net/openbgpd/files/patch-bgpctl_fmt_scaled.c | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/net/openbgpd/files/patch-bgpctl_fmt_scaled.c b/net/openbgpd/files/patch-bgpctl_fmt_scaled.c new file mode 100644 index 000000000000..fb39929e296b --- /dev/null +++ b/net/openbgpd/files/patch-bgpctl_fmt_scaled.c @@ -0,0 +1,159 @@ +--- /dev/null 1 Jan 1970 00:00:00 -0000 ++++ bgpctl/fmt_scaled.c 8 Feb 2007 10:32:19 -0000 +@@ -0,0 +1,152 @@ ++/* $OpenBSD: fmt_scaled.c,v 1.8 2005/10/19 18:48:11 deraadt Exp $ */ ++ ++/* ++ * Copyright (c) 2001, 2002, 2003 Ian F. Darwin. All rights reserved. ++ * ++ * Redistribution and use in source and binary forms, with or without ++ * modification, are permitted provided that the following conditions ++ * are met: ++ * 1. Redistributions of source code must retain the above copyright ++ * notice, this list of conditions and the following disclaimer. ++ * 2. Redistributions in binary form must reproduce the above copyright ++ * notice, this list of conditions and the following disclaimer in the ++ * documentation and/or other materials provided with the distribution. ++ * 3. The name of the author may not be used to endorse or promote products ++ * derived from this software without specific prior written permission. ++ * ++ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR ++ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES ++ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. ++ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, ++ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT ++ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ++ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ++ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ++ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF ++ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ++ */ ++ ++/* ++ * fmt_scaled: Format numbers scaled for human comprehension ++ * scan_scaled: Scan numbers in this format. ++ * ++ * "Human-readable" output uses 4 digits max, and puts a unit suffix at ++ * the end. Makes output compact and easy-to-read esp. on huge disks. ++ * Formatting code was originally in OpenBSD "df", converted to library routine. ++ * Scanning code written for OpenBSD libutil. ++ */ ++ ++#include <stdio.h> ++#include <stdlib.h> ++#include <errno.h> ++#include <string.h> ++#include <ctype.h> ++#include <limits.h> ++ ++#include "util.h" ++ ++typedef enum { ++ NONE = 0, KILO = 1, MEGA = 2, GIGA = 3, TERA = 4, PETA = 5, EXA = 6 ++} unit_type; ++ ++/* These three arrays MUST be in sync! XXX make a struct */ ++static unit_type units[] = { NONE, KILO, MEGA, GIGA, TERA, PETA, EXA }; ++static char scale_chars[] = "BKMGTPE"; ++static long long scale_factors[] = { ++ 1LL, ++ 1024LL, ++ 1024LL*1024, ++ 1024LL*1024*1024, ++ 1024LL*1024*1024*1024, ++ 1024LL*1024*1024*1024*1024, ++ 1024LL*1024*1024*1024*1024*1024, ++}; ++#define SCALE_LENGTH (sizeof(units)/sizeof(units[0])) ++ ++#define MAX_DIGITS (SCALE_LENGTH * 3) /* XXX strlen(sprintf("%lld", -1)? */ ++ ++/* Format the given "number" into human-readable form in "result". ++ * Result must point to an allocated buffer of length FMT_SCALED_STRSIZE. ++ * Return 0 on success, -1 and errno set if error. ++ */ ++int ++fmt_scaled(long long number, char *result) ++{ ++ long long abval, fract = 0; ++ unsigned int i; ++ unit_type unit = NONE; ++ ++ abval = (number < 0LL) ? -number : number; /* no long long_abs yet */ ++ ++ /* Not every negative long long has a positive representation. ++ * Also check for numbers that are just too darned big to format ++ */ ++ if (abval < 0 || abval / 1024 >= scale_factors[SCALE_LENGTH-1]) { ++ errno = ERANGE; ++ return -1; ++ } ++ ++ /* scale whole part; get unscaled fraction */ ++ for (i = 0; i < SCALE_LENGTH; i++) { ++ if (abval/1024 < scale_factors[i]) { ++ unit = units[i]; ++ fract = (i == 0) ? 0 : abval % scale_factors[i]; ++ number /= scale_factors[i]; ++ if (i > 0) ++ fract /= scale_factors[i - 1]; ++ break; ++ } ++ } ++ ++ fract = (10 * fract + 512) / 1024; ++ /* if the result would be >= 10, round main number */ ++ if (fract == 10) { ++ if (number >= 0) ++ number++; ++ else ++ number--; ++ fract = 0; ++ } ++ ++ if (number == 0) ++ strlcpy(result, "0B", FMT_SCALED_STRSIZE); ++ else if (unit == NONE || number >= 100 || number <= -100) { ++ if (fract >= 5) { ++ if (number >= 0) ++ number++; ++ else ++ number--; ++ } ++ (void)snprintf(result, FMT_SCALED_STRSIZE, "%lld%c", ++ number, scale_chars[unit]); ++ } else ++ (void)snprintf(result, FMT_SCALED_STRSIZE, "%lld.%1lld%c", ++ number, fract, scale_chars[unit]); ++ ++ return 0; ++} ++ ++#ifdef MAIN ++/* ++ * This is the original version of the program in the man page. ++ * Copy-and-paste whatever you need from it. ++ */ ++int ++main(int argc, char **argv) ++{ ++ char *cinput = "1.5K", buf[FMT_SCALED_STRSIZE]; ++ long long ninput = 10483892, result; ++ ++ if (scan_scaled(cinput, &result) == 0) ++ printf("\"%s\" -> %lld\n", cinput, result); ++ else ++ perror(cinput); ++ ++ if (fmt_scaled(ninput, buf) == 0) ++ printf("%lld -> \"%s\"\n", ninput, buf); ++ else ++ fprintf(stderr, "%lld invalid (%s)\n", ninput, strerror(errno)); ++ ++ return 0; ++} ++#endif +Index: util.h +=================================================================== +RCS file: util.h +diff -N util.h |