1 .\" Hey Emacs! This file is -*- nroff -*- source.
3 .\" This manpage is Copyright (C) 2006, Michael Kerrisk
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19 .\" which is licensed free of charge, as they might when working
22 .\" Formatted or processed versions of this manual, if unaccompanied by
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25 .\" Japanese Version Copyright (c) 2006 Yuichi SATO
26 .\" all rights reserved.
27 .\" Translated 2006-08-29 by Yuichi SATO <ysato444@yahoo.co.jp>, LDP v2.39
29 .TH SYMLINKAT 2 2009-12-13 "Linux" "Linux Programmer's Manual"
32 .\"O symlinkat \- create a symbolic link relative to a directory file descriptor
33 symlinkat \- ¥Ç¥£¥ì¥¯¥È¥ê¥Õ¥¡¥¤¥ë¥Ç¥£¥¹¥¯¥ê¥×¥¿¤«¤éÁêÂÐŪ¤Ê°ÌÃ֤˥·¥ó¥Ü¥ê¥Ã¥¯¥ê¥ó¥¯¤òºîÀ®¤¹¤ë
37 .\"O .B #include <fcntl.h> /* Definition of AT_* constants */
38 .B #include <fcntl.h> /* AT_* Äê¿ô¤ÎÄêµÁ */
41 .BI "int symlinkat(const char *" oldpath ", int " newdirfd \
42 ", const char *" newpath );
46 .\"O Feature Test Macro Requirements for glibc (see
47 .\"O .BR feature_test_macros (7)):
48 glibc ¸þ¤±¤Îµ¡Ç½¸¡ºº¥Þ¥¯¥í¤ÎÍ×·ï
49 .RB ( feature_test_macros (7)
55 .\"O Since glibc 2.10: _XOPEN_SOURCE >= 700 || _POSIX_C_SOURCE >= 200809L
56 glibc 2.10 °Ê¹ß: _XOPEN_SOURCE >= 700 || _POSIX_C_SOURCE >= 200809L
58 .\"O Before glibc 2.10:
65 .\"O system call operates in exactly the same way as
67 .\"O except for the differences described in this manual page.
69 ¥·¥¹¥Æ¥à¥³¡¼¥ë¤Ï¡¢¤³¤Î man ¥Ú¡¼¥¸¤ÇÀâÌÀ¤·¤Æ¤¤¤ë°ã¤¤¤¬¤¢¤ë°Ê³°¤Ï¡¢
71 ¤ÈÁ´¤¯Æ±¤¸¤è¤¦¤ËÆ°ºî¤¹¤ë¡£
73 .\"O If the pathname given in
75 .\"O is relative, then it is interpreted relative to the directory
76 .\"O referred to by the file descriptor
78 .\"O (rather than relative to the current working directory of
79 .\"O the calling process, as is done by
81 .\"O for a relative pathname).
83 ¤Ç»ØÄꤵ¤ì¤ë¥Ñ¥¹Ì¾¤¬ÁêÂХѥ¹¤Ç¤¢¤ë¾ì¹ç¡¢
84 ¥Õ¥¡¥¤¥ë¥Ç¥£¥¹¥¯¥ê¥×¥¿
86 ¤Ç»²¾È¤µ¤ì¤ë¥Ç¥£¥ì¥¯¥È¥ê¤«¤é¤ÎÁêÂХѥ¹Ì¾¤È¤·¤Æ²ò¼á¤µ¤ì¤ë
88 ¤Ç¤Ï¡¢ÁêÂХѥ¹¤Ï¸Æ¤Ó½Ð¤·¸µ¥×¥í¥»¥¹¤Î
89 ¥«¥ì¥ó¥È¥ï¡¼¥¥ó¥°¥Ç¥£¥ì¥¯¥È¥ê¤«¤é¤ÎÁêÂХѥ¹¤È¤Ê¤ë)¡£
95 .\"O is the special value
99 .\"O is interpreted relative to the current working
100 .\"O directory of the calling process (like
101 .\"O .BR symlink (2)).
103 ¤¬ÁêÂХѥ¹¤Ç¤¢¤ê¡¢¤«¤Ä
111 ¤ÈƱ¤¸¤è¤¦¤Ë) ¸Æ¤Ó½Ð¤·¸µ¥×¥í¥»¥¹¤Î
112 ¥«¥ì¥ó¥È¥ï¡¼¥¥ó¥°¥Ç¥£¥ì¥¯¥È¥ê¤«¤é¤ÎÁêÂХѥ¹Ì¾¤È¤·¤Æ²ò¼á¤µ¤ì¤ë¡£
116 .\"O is absolute, then
120 ¤¬ÀäÂХѥ¹¤Ç¤¢¤ë¾ì¹ç¡¢
123 .\"O .SH "RETURN VALUE"
126 .\"O .BR symlinkat ()
131 .\"O On error, \-1 is returned and
133 .\"O is set to indicate the error.
134 ¥¨¥é¡¼¤Î¾ì¹ç¡¢\-1 ¤¬ÊÖ¤µ¤ì¤Æ¡¢
136 ¤Ë¤Ï¥¨¥é¡¼¤ò¼¨¤¹Ãͤ¬ÀßÄꤵ¤ì¤ë¡£
139 .\"O The same errors that occur for
141 .\"O can also occur for
142 .\"O .BR symlinkat ().
147 .\"O The following additional errors can occur for
148 .\"O .BR symlinkat ():
150 ¤Ç¤Ï¡¢¤½¤Î¾¤Ë°Ê²¼¤Î¥¨¥é¡¼¤¬µ¯¤³¤ë:
154 .\"O is not a valid file descriptor.
156 ¤¬Í¸ú¤Ê¥Õ¥¡¥¤¥ë¥Ç¥£¥¹¥¯¥ê¥×¥¿¤Ç¤Ê¤¤¡£
162 .\"O is a file descriptor referring to a file other than a directory.
166 ¤¬¥Ç¥£¥ì¥¯¥È¥ê°Ê³°¤Î¥Õ¥¡¥¤¥ë¤ò»²¾È¤¹¤ë¥Õ¥¡¥¤¥ë¥Ç¥£¥¹¥¯¥ê¥×¥¿¤Ç¤¢¤ë¡£
169 .\"O .BR symlinkat ()
170 .\"O was added to Linux in kernel 2.6.16.
172 ¤Ï Linux ¥«¡¼¥Í¥ë 2.6.16 ¤ÇÄɲ䵤줿¡£
173 .\"O .SH "CONFORMING TO"
180 .\"O for an explanation of the need for
181 .\"O .BR symlinkat ().
183 ¤¬É¬ÍפÊÍýͳ¤Ë¤Ä¤¤¤Æ¤Ï¡¢
190 .BR path_resolution (7),