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/* $OpenBSD: evutil.c,v 1.10 2016/03/20 00:01:22 krw 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)) < 0) { |
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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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} |