83 lines
2.7 KiB
Groff
83 lines
2.7 KiB
Groff
.\" Copyright (c) 1993
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.\" The Regents of the University of California. 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. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)daemon.3 8.1 (Berkeley) 6/9/93
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.\" %FreeBSD: src/lib/libc/gen/daemon.3,v 1.6.2.4 2001/12/14 18:33:50 ru Exp %
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.\"
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.\" $FreeBSD$
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.Dd June 9, 1993
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.Dt DAEMON 3
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.Os
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.Sh ̾¾Î
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.Nm daemon
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.Nd ¥Ð¥Ã¥¯¥°¥é¥¦¥ó¥É¤Ç¼Â¹Ô¤¹¤ë
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.Sh ¥é¥¤¥Ö¥é¥ê
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.Lb libc
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.Sh ½ñ¼°
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.In stdlib.h
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.Ft int
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.Fn daemon "int nochdir" "int noclose"
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.Sh ²òÀâ
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.Fn daemon
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´Ø¿ô¤Ï¡¢À©¸æüËö¤«¤é¼«Ê¬¼«¿È¤òÀÚ¤êÎ¥¤·¡¢¥·¥¹¥Æ¥à¥Ç¡¼¥â¥ó¤È¤·¤Æ
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Æ°ºî¤¹¤ë¤³¤È¤ò˾¤à¥×¥í¥°¥é¥à¤Î¤¿¤á¤Î¤â¤Î¤Ç¤¹¡£
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.Pp
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°ú¿ô
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.Fa nochdir
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¤¬ 0 ¤Î¾ì¹ç¡¢
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.Fn daemon
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¤Ï¸½ºß¤Îºî¶È¥Ç¥£¥ì¥¯¥È¥ê¤ò¥ë¡¼¥È (``/'') ¤ËÊѹ¹¤·¤Þ¤¹¡£
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.Pp
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°ú¿ô
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.Fa noclose
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¤¬ 0 ¤Î¾ì¹ç¡¢
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.Fn daemon
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¤Ï¡¢É¸½àÆþÎÏ¡¢É¸½à½ÐÎÏ¡¢¤ª¤è¤Óɸ½à¥¨¥é¡¼½ÐÎϤò ``/dev/null'' ¤Ë
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¥ê¥À¥¤¥ì¥¯¥È¤·¤Þ¤¹¡£
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.Sh ¥¨¥é¡¼
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¥¨¥é¡¼¤¬È¯À¸¤¹¤ë¤È¡¢
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.Fn daemon
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¤Ï -1 ¤òÊÖ¤·¡¢¥é¥¤¥Ö¥é¥ê´Ø¿ô
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.Xr fork 2
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¤È
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.Xr setsid 2
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µ¬Äꤵ¤ì¤Æ¤¤¤ë¥¨¥é¡¼¤ò¥°¥í¡¼¥Ð¥ëÊÑ¿ô
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.Va errno
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¤ËÀßÄꤷ¤Þ¤¹¡£
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.Pp
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.Sh ´ØÏ¢¹àÌÜ
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.Xr fork 2 ,
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.Xr setsid 2
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.Sh Îò»Ë
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.Fn daemon
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´Ø¿ô¤Ï
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.Bx 4.4
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¤Ç¤Ï¤¸¤á¤ÆÅо줷¤Þ¤·¤¿¡£
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