224 lines
7.3 KiB
Groff
224 lines
7.3 KiB
Groff
.\" Copyright (c) 1980, 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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.\" @(#)chmod.2 8.1 (Berkeley) 6/4/93
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.\" %FreeBSD: src/lib/libc/sys/chmod.2,v 1.12.2.3 1999/08/29 14:48:58 peter Exp %
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.\"
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.Dd June 4, 1993
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.Dt CHMOD 2
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.Os BSD 4
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.Sh ̾¾Î
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.Nm chmod ,
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.Nm fchmod ,
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.Nm lchmod
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.Nd ¥Õ¥¡¥¤¥ë¤Î¥â¡¼¥É¤òÊѹ¹¤¹¤ë
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.Sh ½ñ¼°
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.Fd #include <sys/stat.h>
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.Ft int
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.Fn chmod "const char *path" "mode_t mode"
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.Ft int
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.Fn fchmod "int fd" "mode_t mode"
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.Ft int
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.Fn lchmod "const char *path" "mode_t mode"
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.Sh ²òÀâ
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.Fa path
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¤Ç»ØÄꤵ¤ì¤ë¤«¡¢¤Þ¤¿¤Ï¥Õ¥¡¥¤¥ëµ½Ò»Ò
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.Fa fd
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¥Õ¥¡¥¤¥ëµö²Ä¥Ó¥Ã¥È¤ò
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.Fa mode
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¤ËÊѹ¹¤·¤Þ¤¹¡£
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.Fn chmod
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´Ø¿ô¤Ï¡¢¥×¥í¥»¥¹½êͼÔ
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(¥æ¡¼¥¶) ¤¬
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.Fa path
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(¤Þ¤¿¤Ï
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.Fa fd )
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¤Ç»ØÄꤵ¤ì¤¿¥Õ¥¡¥¤¥ë¤ò½êͤ¹¤ë¤«¡¢¤Þ¤¿¤Ï¥¹¡¼¥Ñ¥æ¡¼¥¶¤Ç
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¤¢¤ë¤«¤Î¤É¤Á¤é¤«¤Ç¤¢¤ë¤³¤È¤ò³Îǧ¤·¤Þ¤¹¡£
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.Fn chmod
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´Ø¿ô¤Ï¥·¥ó¥Ü¥ê¥Ã¥¯¥ê¥ó¥¯¼«ÂΤǤϤʤ¯¡¢¥ê¥ó¥¯Àè¤ËºîÍѤ·¤Þ¤¹¡£
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.Pp
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.Fa lchmod
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´Ø¿ô¤Ï
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.Fn chmod
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¤ËÎà»÷¤·¤Æ¤¤¤Þ¤¹¤¬¡¢¥·¥ó¥Ü¥ê¥Ã¥¯¥ê¥ó¥¯¤ò¤¿¤É¤ê¤Þ¤»¤ó¡£
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.Pp
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¥â¡¼¥É¤Ï
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.Aq Pa sys/stat.h
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¤ÇÄêµÁ¤µ¤ì¤¿µö²Ä¥Ó¥Ã¥È¥Þ¥¹¥¯¤ÎÏÀÍýÏÂ
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.Pf ( Em or )
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¤«¤éºîÀ®¤µ¤ì¤Þ¤¹:
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.Pp
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.Bd -literal -offset indent -compact
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#define S_IRWXU 0000700 /* ½êͼÔÍѤΠRWX ¥Þ¥¹¥¯ */
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#define S_IRUSR 0000400 /* ½êͼÔÍѤΠR */
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#define S_IWUSR 0000200 /* ½êͼÔÍѤΠW */
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#define S_IXUSR 0000100 /* ½êͼÔÍѤΠX */
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#define S_IRWXG 0000070 /* ¥°¥ë¡¼¥×ÍѤΠRWX ¥Þ¥¹¥¯ */
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#define S_IRGRP 0000040 /* ¥°¥ë¡¼¥×ÍѤΠR */
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#define S_IWGRP 0000020 /* ¥°¥ë¡¼¥×ÍѤΠW */
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#define S_IXGRP 0000010 /* ¥°¥ë¡¼¥×ÍѤΠX */
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#define S_IRWXO 0000007 /* ¤½¤Î¾ÍѤΠRWX ¥Þ¥¹¥¯ */
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#define S_IROTH 0000004 /* ¤½¤Î¾ÍѤΠR */
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#define S_IWOTH 0000002 /* ¤½¤Î¾ÍѤΠW */
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#define S_IXOTH 0000001 /* ¤½¤Î¾ÍѤΠX */
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#define S_ISUID 0004000 /* ¼Â¹Ô»þ¤Ë¥æ¡¼¥¶ ID ¤òÀßÄê */
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#define S_ISGID 0002000 /* ¼Â¹Ô»þ¤Ë¥°¥ë¡¼¥× ID ¤òÀßÄê */
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#define S_ISVTX 0001000 /* ¥¹¥Æ¥£¥Ã¥¡¼¥Ó¥Ã¥È */
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#ifndef _POSIX_SOURCE
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#define S_ISTXT 0001000
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#endif
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.Ed
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.Pp
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.Tn FreeBSD
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VM ¥·¥¹¥Æ¥à¤Ï¡¢¼Â¹Ô²Äǽ¥â¥¸¥å¡¼¥ë¤Ë¤Ä¤¤¤Æ¥¹¥Æ¥£¥Ã¥¡¼¥Ó¥Ã¥È
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.Pf ( Dv ISVTX )
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UFS ¤ò¥Ù¡¼¥¹¤È¤·¤¿¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à (FFS, MFS, LFS) ¤Ç¤Ï¡¢
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.Pp
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(`¥¹¥Æ¥£¥Ã¥¡¼¥Ó¥Ã¥È') ¤¬ÀßÄꤵ¤ì¤Æ¤¤¤ë¥Ç¥£¥ì¥¯¥È¥ê¤Ç¤Ï¡¢
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.Pp
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¤¢¤ë¥Ç¥£¥ì¥¯¥È¥ê¤Ë ISUID (UID ÀßÄê) ¤¬ÀßÄꤵ¤ì¤Æ¤ª¤ê¡¢
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¤·¤«¤â¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥à¤ò¥Þ¥¦¥ó¥È¤¹¤ëºÝ¤Ë MNT_SUIDDIR ¥ª¥×¥·¥ç¥ó¤¬
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¤³¤Îµ¡Ç½¤Ï¡¢ftp¡¢SAMBA ¤Þ¤¿¤Ï netatalk ·Ðͳ¤Ç PC ¥æ¡¼¥¶¤Ø¤Î
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suiddir ¥Þ¥¦¥ó¥È¥ª¥×¥·¥ç¥ó¤Î¾ÜºÙ¤Ë¤Ä¤¤¤Æ¤Ï¡¢
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.Xr mount 8
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¤ò»²¾È¤·¤Æ¤¯¤À¤µ¤¤¡£
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.Pp
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¥¹¡¼¥Ñ¥æ¡¼¥¶°Ê³°¤Î¥æ¡¼¥¶¤Ë¤è¤ë¡¢
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set-user-id (set-group-id) ¤¬»Ä¤Ã¤¿¤Þ¤Þ¤Ë¤Ê¤Ã¤Æ¤·¤Þ¤ï¤Ê¤¤¤è¤¦¤Ë
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Àµ¾ï¤Ë´°Î»¤¹¤ë¤ÈÃÍ 0 ¤¬ÊÖ¤µ¤ì¤Þ¤¹¡£¤½¤¦¤Ç¤Ê¤¤¾ì¹ç¤Ï¡¢ÃÍ -1 ¤¬ÊÖ¤µ¤ì¡¢
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¥¨¥é¡¼¤ò¼¨¤¹¤¿¤á¤Ë
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.Va errno
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¤¬ÀßÄꤵ¤ì¤Þ¤¹¡£
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.Sh ¥¨¥é¡¼
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.Fn chmod
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¤Ï¼¡¤Î¾ì¹ç¤Ë½èÍý¤Ë¼ºÇÔ¤·¥Õ¥¡¥¤¥ë¥â¡¼¥É¤ÏÊѹ¹¤µ¤ì¤Þ¤»¤ó¡£
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.Bl -tag -width Er
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.It Bq Er ENOTDIR
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¥Ñ¥¹¤Î¹½À®Í×ÁÇÃæ¤Ë¥Ç¥£¥ì¥¯¥È¥ê°Ê³°¤Î¤â¤Î¤¬´Þ¤Þ¤ì¤Æ¤¤¤Þ¤¹¡£
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.It Bq Er ENAMETOOLONG
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¥Ñ¥¹Ì¾¤Î¹½À®Í×ÁǤ¬ 255 ʸ»ú¤ò±Û¤¨¤Æ¤¤¤ë¤«¡¢
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¤Þ¤¿¤Ï¥Ñ¥¹Ì¾Á´ÂΤ¬ 1023 ʸ»ú¤ò±Û¤¨¤Æ¤¤¤Þ¤¹¡£
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.It Bq Er ENOENT
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»ØÄꤵ¤ì¤¿¥Õ¥¡¥¤¥ë¤¬Â¸ºß¤·¤Þ¤»¤ó¡£
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.It Bq Er EACCES
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Á°Ã֥ѥ¹Ì¾¤Î¹½À®Í×ÁǤˤĤ¤¤Æ¸¡º÷µö²Ä¤¬µñÀ䤵¤ì¤Æ¤¤¤Þ¤¹¡£
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.It Bq Er ELOOP
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.It Bq Er EPERM
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¼Â¸ú¥æ¡¼¥¶ ID ¤¬¥Õ¥¡¥¤¥ë¤Î½êͼԤȰìÃפ»¤º¡¢
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¼Â¸ú¥æ¡¼¥¶ ID ¤¬¥¹¡¼¥Ñ¥æ¡¼¥¶¤Ç¤Ï¤¢¤ê¤Þ¤»¤ó¡£
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.It Bq Er EROFS
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.It Bq Er EFAULT
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.Fa path
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.It Bq Er EIO
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.It Bq Er EFTYPE
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¼Â¹Ô²Äǽ¥â¥¸¥å¡¼¥ë¾å¤Ç¥¹¥Æ¥£¥Ã¥¡¼¥Ó¥Ã¥È¤òÀßÄꤷ¤è¤¦¤È¤·¤Þ¤·¤¿¡£
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.El
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.Pp
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.Fn fchmod
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¤Ï¼¡¤Î¾ì¹ç¤Ë½èÍý¤ò¼ºÇÔ¤·¤Þ¤¹¡£
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.Bl -tag -width Er
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.It Bq Er EBADF
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µ½Ò»Ò¤¬Í¸ú¤Ç¤Ï¤¢¤ê¤Þ¤»¤ó¡£
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.It Bq Er EINVAL
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.Fa fd
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¤¬¥Õ¥¡¥¤¥ë¤Ç¤Ï¤Ê¤¯¥½¥±¥Ã¥È¤ò»²¾È¤·¤Æ¤¤¤Þ¤¹¡£
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.It Bq Er EROFS
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¥Õ¥¡¥¤¥ë¤¬Æɼè¤êÀìÍѤΥե¡¥¤¥ë¥·¥¹¥Æ¥à¾å¤ËÃÖ¤«¤ì¤Æ¤¤¤Þ¤¹¡£
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.It Bq Er EIO
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.El
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.Sh ´ØÏ¢¹àÌÜ
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.Xr chmod 1 ,
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.Xr chown 2 ,
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.Xr open 2 ,
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.Xr stat 2 ,
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.Xr sticky 8
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.Sh µ¬³Ê
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.Fn chmod
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´Ø¿ô¤Ï
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EFTYPE ¤ÎÌá¤ê¤È S_ISTXT ¤Î»ÈÍÑË¡¤ò½ü¤¤¤Æ
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.St -p1003.1-90
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.Sh Îò»Ë
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.Fn chmod
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´Ø¿ô¤Ï
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.At v7
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¤ÇÅо줷¤Þ¤·¤¿¡£
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.Fn fchmod
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´Ø¿ô¤Ï
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.Bx 4.2
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¤ÇÅо줷¤Þ¤·¤¿¡£
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.Fn lchmod
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´Ø¿ô¤Ï
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.Fx 3.0
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¤ÇÅо줷¤Þ¤·¤¿¡£
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