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Revision 1.2, Fri Jan 16 06:40:06 2015 UTC (9 years, 4 months ago) by deraadt
Replace <sys/param.h> with <limits.h> and other less dirty headers where possible. Annotate <sys/param.h> lines with their current reasons. Switch to PATH_MAX, NGROUPS_MAX, HOST_NAME_MAX+1, LOGIN_NAME_MAX, etc. Change MIN() and MAX() to local definitions of MINIMUM() and MAXIMUM() where sensible to avoid pulling in the pollution. These are the files confirmed through binary verification. ok guenther, millert, doug (helped with the verification protocol) |
/* $OpenBSD: atomicio.c,v 1.2 2015/01/16 06:40:06 deraadt Exp $ */ /* * Copyright (c) 2006 Damien Miller. All rights reserved. * Copyright (c) 2005 Anil Madhavapeddy. All rights reserved. * Copyright (c) 1995,1999 Theo de Raadt. All rights reserved. * 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. * * 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. */ #include <sys/types.h> #include <errno.h> #include <poll.h> #include <unistd.h> #include "atomicio.h" /* * ensure all of data on socket comes through. f==read || f==vwrite */ size_t atomicio(ssize_t (*f) (int, void *, size_t), int fd, void *_s, size_t n) { char *s = _s; size_t pos = 0; ssize_t res; struct pollfd pfd; pfd.fd = fd; pfd.events = f == read ? POLLIN : POLLOUT; while (n > pos) { res = (f) (fd, s + pos, n - pos); switch (res) { case -1: if (errno == EINTR) continue; if (errno == EAGAIN) { (void)poll(&pfd, 1, -1); continue; } return 0; case 0: errno = EPIPE; return pos; default: pos += (size_t)res; } } return (pos); }