e3a90f49ad
Cursory review: cem MFC after: 3 months Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D22259
162 lines
3.6 KiB
C
162 lines
3.6 KiB
C
/* $NetBSD: support.c,v 1.9 2018/09/18 22:12:19 christos Exp $ */
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/*-
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* Copyright (c) 2015 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Christos Zoulas.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <sys/cdefs.h>
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__RCSID("$NetBSD: support.c,v 1.9 2018/09/18 22:12:19 christos Exp $");
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#include <time.h>
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#include <string.h>
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#include <stdio.h>
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#include <stdarg.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <inttypes.h>
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#include "support.h"
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static __attribute__((__format_arg__(3))) const char *
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expandm(char *buf, size_t len, const char *fmt)
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{
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char *p;
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size_t r;
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if ((p = strstr(fmt, "%m")) == NULL)
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return fmt;
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r = (size_t)(p - fmt);
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if (r >= len)
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return fmt;
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strlcpy(buf, fmt, r + 1);
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strlcat(buf, strerror(errno), len);
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strlcat(buf, fmt + r + 2, len);
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return buf;
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}
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void
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vdlog(int level __unused, const char *fmt, va_list ap)
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{
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char buf[BUFSIZ];
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// fprintf(stderr, "%s: ", getprogname());
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vfprintf(stderr, expandm(buf, sizeof(buf), fmt), ap);
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fprintf(stderr, "\n");
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}
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void
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dlog(int level, const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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vdlog(level, fmt, ap);
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va_end(ap);
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}
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const char *
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fmttime(char *b, size_t l, time_t t)
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{
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struct tm tm;
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if (localtime_r(&t, &tm) == NULL)
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snprintf(b, l, "*%jd*", (intmax_t)t);
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else
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strftime(b, l, "%Y/%m/%d %H:%M:%S", &tm);
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return b;
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}
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const char *
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fmtydhms(char *b, size_t l, time_t t)
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{
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time_t s, m, h, d, y;
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int z;
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size_t o;
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s = t % 60;
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t /= 60;
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m = t % 60;
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t /= 60;
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h = t % 24;
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t /= 24;
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d = t % 365;
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t /= 365;
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y = t;
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z = 0;
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o = 0;
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#define APPEND(a) \
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if (a) { \
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z = snprintf(b + o, l - o, "%jd%s", (intmax_t)a, __STRING(a)); \
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if (z == -1) \
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return b; \
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o += (size_t)z; \
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if (o >= l) \
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return b; \
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}
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APPEND(y)
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APPEND(d)
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APPEND(h)
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APPEND(m)
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APPEND(s)
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return b;
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}
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ssize_t
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blhexdump(char *buf, size_t len, const char *str, const void *b, size_t l)
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{
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size_t z, cz;
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int r;
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const unsigned char *p = b;
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const unsigned char *e = p + l;
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r = snprintf(buf, len, "%s: ", str);
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if (r == -1)
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return -1;
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if ((cz = z = (size_t)r) >= len)
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cz = len;
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while (p < e) {
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r = snprintf(buf + cz, len - cz, "%.2x", *p++);
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if (r == -1)
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return -1;
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if ((cz = (z += (size_t)r)) >= len)
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cz = len;
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}
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return (ssize_t)z;
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}
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