96 lines
3.2 KiB
Groff
96 lines
3.2 KiB
Groff
.\" Copyright (c) 1991, 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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.\" @(#)mprotect.2 8.1 (Berkeley) 6/9/93
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.\" %FreeBSD: src/lib/libc/sys/mprotect.2,v 1.17 2003/02/23 01:47:48 ru Exp %
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.\"
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.\" $FreeBSD$
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.Dd June 9, 1993
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.Dt MPROTECT 2
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.Os
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.Sh ̾¾Î
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.Nm mprotect
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.Nd ¥Ú¡¼¥¸¤ÎÊݸî°À¤òÀ©¸æ¤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 sys/mman.h
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.Ft int
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.Fn mprotect "const void *addr" "size_t len" "int prot"
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.Sh ²òÀâ
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.Fn mprotect
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¥·¥¹¥Æ¥à¥³¡¼¥ë¤Ï»ØÄê¤Î¥Ú¡¼¥¸¤¬Êݸî°À
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.Fa prot
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¤ò»ý¤Ä¤è¤¦¤ËÊѹ¹¤·¤Þ¤¹¡£
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¤¹¤Ù¤Æ¤Î¾ì¹ç¤Ë¤ª¤¤¤Æ¥Ú¡¼¥¸Ã±°Ì¤Ç¤ÎÊݸî°À¤òÊݾڤ¹¤ë¤ï¤±¤Ç¤Ï¤¢¤ê¤Þ¤»¤ó¡£
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Êݸî°ÀÊѹ¹¤ÎºÙ¤«¤µ¤Ï¥ê¡¼¥¸¥ç¥óÁ´ÂΤÈƱ¤¸Â礤µ¤«¤â¤·¤ì¤Þ¤»¤ó¡£
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¥ê¡¼¥¸¥ç¥ó¤Ï
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.Vt "struct vm_map_entry"
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¤Î start (³«»Ï) ¤È end (½ªÎ») ¤Î¥¢¥É¥ì¥¹¤ÇÄêµÁ¤µ¤ì¤ë²¾ÁÛ¥¢¥É¥ì¥¹¶õ´Ö¤Ç¤¹¡£
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.Pp
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¸½ºß¡¢°Ê²¼¤Î OR ¤ò¤È¤Ã¤ÆÁȤ߹ç¤ï¤»¤ë¤³¤È¤¬²Äǽ¤ÊÊݸî¥Ó¥Ã¥È¤¬ÃΤé¤ì¤Æ¤¤¤Þ¤¹¡£
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.Pp
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.Bl -tag -width ".Dv PROT_WRITE" -compact
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.It Dv PROT_NONE
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Á´¤¯Êݸ¤Þ¤»¤ó¡£
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.It Dv PROT_READ
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¥Ú¡¼¥¸¤ÏÆɼè¤ê²Äǽ¤Ç¤¹¡£
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.It Dv PROT_WRITE
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¥Ú¡¼¥¸¤Ï½ñ¹þ¤ß²Äǽ¤Ç¤¹¡£
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.It Dv PROT_EXEC
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¥Ú¡¼¥¸¤Ï¼Â¹Ô²Äǽ¤Ç¤¹¡£
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.El
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.Sh Ìá¤êÃÍ
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.Rv -std mprotect
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.Sh ¥¨¥é¡¼
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.Fn mprotect
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¥·¥¹¥Æ¥à¥³¡¼¥ë¤Ï¼¡¤Î¾ì¹ç¤Ë½èÍý¤ò¼ºÇÔ¤·¤Þ¤¹:
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.Bl -tag -width Er
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.It Bq Er EINVAL
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.Fa addr
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°ú¿ô¤È
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.Fa len
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°ú¿ô¤Ç»ØÄꤷ¤Æ¤¤¤ë²¾ÁÛ¥¢¥É¥ì¥¹ÈϰϤÏ͸ú¤Ç¤Ï¤¢¤ê¤Þ¤»¤ó¡£
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.It Bq Er EACCES
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¸Æ¤Ó½Ð¤·¥×¥í¥»¥¹¤Ï
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.Fa prot
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°ú¿ô¤Ë¤è¤Ã¤Æ»ØÄꤵ¤ì¤ëÃͤËÊݸî°À¤òÊѹ¹¤¹¤ë¤³¤È¤òµö²Ä¤µ¤ì¤Æ¤¤¤Þ¤»¤ó¡£
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.El
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.Sh ´ØÏ¢¹àÌÜ
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.Xr madvise 2 ,
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.Xr mincore 2 ,
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.Xr msync 2 ,
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.Xr munmap 2
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.Sh Îò»Ë
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.Fn mprotect
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¥·¥¹¥Æ¥à¥³¡¼¥ë¤Ï
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.Bx 4.4
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¤Ç¤Ï¤¸¤á¤ÆÅо줷¤Þ¤·¤¿¡£
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