From: Theodore Tso Date: Sat, 16 Jul 1994 03:59:22 +0000 (+0000) Subject: Add BSD daemon library routine X-Git-Tag: krb5-1.0-beta4.2~131 X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=95afd1ed28af33313ec9df354524090d9c6261af;p=krb5.git Add BSD daemon library routine git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@3986 dc483132-0cff-0310-8789-dd5450dbe970 --- diff --git a/src/lib/krb5/posix/configure.in b/src/lib/krb5/posix/configure.in index 924997432..f1ee848b6 100644 --- a/src/lib/krb5/posix/configure.in +++ b/src/lib/krb5/posix/configure.in @@ -6,6 +6,7 @@ SubdirLibraryRule([${OBJS}]) KRB_INCLUDE ISODE_INCLUDE AC_CONST -AC_REPLACE_FUNCS(vfprintf vsprintf strdup strerror memmove) +AC_HEADER_CHECK(paths.h,AC_DEFINE(HAS_PATHS_H)) +AC_REPLACE_FUNCS(vfprintf vsprintf strdup strerror memmove daemon) AC_FUNC_CHECK(vsyslog, ,[LIBOBJS="[$]LIBOBJS syslog.o"]) AC_OUTPUT(Makefile,[EXTRA_RULES]) diff --git a/src/lib/krb5/posix/daemon.c b/src/lib/krb5/posix/daemon.c new file mode 100644 index 000000000..32326fec7 --- /dev/null +++ b/src/lib/krb5/posix/daemon.c @@ -0,0 +1,93 @@ +/*- + * Copyright (c) 1990 The Regents of the University of California. + * 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. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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 +#include +#include +#ifdef HAS_PATHS_H +#include +#endif +#include + +#ifndef _PATH_DEVNULL +#define _PATH_DEVNULL "/dev/null" +#endif + +daemon(nochdir, noclose) + int nochdir, noclose; +{ + int cpid; + + if ((cpid = fork()) == -1) + return (-1); + if (cpid) + exit(0); +#ifdef HAS_SETSID + (void) setsid(); +#else +#ifndef TIOCNOTTY + setpgrp(); +#else + { + int n; + + /* + * The open below may hang on pseudo ttys if the person + * who starts named logs out before this point. Thus, + * the need for the timer. + */ + alarm(120); + n = open("/dev/tty", O_RDWR); + alarm(0); + if (n > 0) { + (void) ioctl(n, TIOCNOTTY, (char *)NULL); + (void) close(n); + } + } +#endif +#endif + if (!nochdir) + (void) chdir("/"); + if (!noclose) { + int devnull = open(_PATH_DEVNULL, O_RDWR, 0); + + if (devnull != -1) { + (void) dup2(devnull, 0); + (void) dup2(devnull, 1); + (void) dup2(devnull, 2); + if (devnull > 2) + (void) close(devnull); + } + } + return (0); +}