107 lines
2.8 KiB
C
107 lines
2.8 KiB
C
/* $OpenBSD: evutil.c,v 1.11 2019/06/28 13:32:42 deraadt Exp $ */
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/*
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* Copyright (c) 2007 Niels Provos <provos@citi.umich.edu>
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* All rights reserved.
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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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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/queue.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <stdio.h>
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#include <signal.h>
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#include "event.h"
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#include "event-internal.h"
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#include "evutil.h"
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#include "log.h"
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int
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evutil_socketpair(int family, int type, int protocol, int fd[2])
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{
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return socketpair(family, type, protocol, fd);
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}
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int
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evutil_make_socket_nonblocking(int fd)
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{
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int flags;
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if ((flags = fcntl(fd, F_GETFL)) == -1) {
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event_warn("fcntl(%d, F_GETFL)", fd);
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return -1;
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}
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if (fcntl(fd, F_SETFL, flags | O_NONBLOCK) == -1) {
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event_warn("fcntl(%d, F_SETFL)", fd);
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return -1;
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}
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return 0;
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}
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ev_int64_t
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evutil_strtoll(const char *s, char **endptr, int base)
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{
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return (ev_int64_t)strtoll(s, endptr, base);
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}
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int
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evutil_snprintf(char *buf, size_t buflen, const char *format, ...)
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{
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int r;
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va_list ap;
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va_start(ap, format);
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r = evutil_vsnprintf(buf, buflen, format, ap);
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va_end(ap);
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return r;
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}
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int
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evutil_vsnprintf(char *buf, size_t buflen, const char *format, va_list ap)
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{
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int r = vsnprintf(buf, buflen, format, ap);
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buf[buflen-1] = '\0';
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return r;
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}
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static int
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evutil_issetugid(void)
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{
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return issetugid();
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}
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const char *
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evutil_getenv(const char *varname)
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{
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if (evutil_issetugid())
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return NULL;
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return getenv(varname);
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}
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