doc/ja_JP.eucJP/man/man3/directory.3

.\" Copyright (c) 1983, 1991, 1993
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.\"     @(#)directory.3	8.1 (Berkeley) 6/4/93
.\"
.Dd June 4, 1993
.Dt DIRECTORY 3
.Os BSD 4.2
.Sh ̾¾Î
.Nm opendir ,
.Nm readdir ,
.Nm telldir ,
.Nm seekdir ,
.Nm rewinddir ,
.Nm closedir ,
.Nm dirfd
.Nd ¥Ç¥£¥ì¥¯¥È¥êÁàºî
.Sh ½ñ¼°
.Fd #include <sys/types.h>
.Fd #include <dirent.h>
.Ft DIR *
.Fn opendir "const char *filename"
.Ft struct dirent *
.Fn readdir "DIR *dirp"
.Ft long
.Fn telldir "const DIR *dirp"
.Ft void
.Fn seekdir "DIR *dirp" "long  loc"
.Ft void
.Fn rewinddir "DIR *dirp"
.Ft int
.Fn closedir "DIR *dirp"
.Ft int
.Fn dirfd "DIR *dirp"
.Sh ²òÀâ
.Fn opendir
´Ø¿ô¤Ï¡¢
.Fa filename
¤Ç»Ø̾¤µ¤ì¤¿¥Ç¥£¥ì¥¯¥È¥ê¤ò³«¤­¡¢
.Em ¥Ç¥£¥ì¥¯¥È¥ê¥¹¥È¥ê¡¼¥à
¤ò¤½¤ì¤ËÂбþ¤µ¤»¡¢¸å³¤ÎÁàºî¤Ç¤Î
.Em ¥Ç¥£¥ì¥¯¥È¥ê¥¹¥È¥ê¡¼¥à
¤ò¼±Ê̤¹¤ë¤Î¤Ë»ÈÍѤ¹¤ë¥Ý¥¤¥ó¥¿¤òÊÖ¤·¤Þ¤¹¡£
.Fa filename
¤Ë
¥¢¥¯¥»¥¹¤Ç¤­¤Ê¤¤¾ì¹ç¡¢¤Þ¤¿¤Ï¤¹¤Ù¤Æ¤Î¤â¤Î¤òÊÝ»ý¤¹¤ë¤Î¤Ë½½Ê¬¤Ê¥á¥â¥ê¤ò
.Xr malloc 3
¤Ç¤­¤Ê¤¤¾ì¹ç¤Ï¡¢¥Ý¥¤¥ó¥¿
.Dv NULL
¤¬ÊÖ¤µ¤ì¤Þ¤¹¡£
.Pp
.Fn readdir
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´Ø¿ô¤Ï¡¢¥Ç¥£¥ì¥¯¥È¥ê¤ÎËöÈø¤ËÅþ㤹¤ë¤«¡¢¤Þ¤¿¤Ï̵¸ú¤Ê
.Fn seekdir
Áàºî¤ò
¸¡½Ð¤¹¤ë¤È
.Dv NULL
¤òÊÖ¤·¤Þ¤¹¡£
.Pp
.Fn telldir
´Ø¿ô¤Ï¡¢Ì¾Á°¤ÎÉÕ¤¤¤¿
.Em ¥Ç¥£¥ì¥¯¥È¥ê¥¹¥È¥ê¡¼¥à
¤ËÂбþ¤¹¤ë¸½ºß¤Î°ÌÃÖ¤òÊÖ¤·¤Þ¤¹¡£
.Fn telldir
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.Dv DIR
¥Ý¥¤¥ó¥¿
.Fa dirp
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.Fn telldir
¤¬ÊÖ¤·¤¿°ÊÁ°¤ÎÃͤϤâ¤Ï¤äÍ­¸ú¤Ç¤Ï¤¢¤ê¤Þ¤»¤ó¡£
.Pp
.Fn seekdir
´Ø¿ô¤Ï¡¢
.Em ¥Ç¥£¥ì¥¯¥È¥ê¥¹¥È¥ê¡¼¥à
¤Ø¤Î¼¡¤Î
.Fn readdir
Áàºî¤Î°ÌÃÖ¤òÀßÄꤷ¤Þ¤¹¡£¿·¤·¤¤°ÌÃ֤ϡ¢
.Fn telldir
Áàºî¤¬¼Â¹Ô¤µ¤ì¤¿¤È¤­¤Î
.Em ¥Ç¥£¥ì¥¯¥È¥ê¥¹¥È¥ê¡¼¥à
¤ÈÂбþÉÕ¤±¤é¤ì¤¿¤â¤Î¤ËÌá¤ê¤Þ¤¹¡£
.Pp
.Fn rewinddir
´Ø¿ô¤Ï¡¢Ì¾Á°¤ÎÉÕ¤¤¤¿
.Em ¥Ç¥£¥ì¥¯¥È¥ê¥¹¥È¥ê¡¼¥à
¤Î°ÌÃÖ¤ò¥Ç¥£¥ì¥¯¥È¥ê¤ÎÀèƬ¤Ë¥ê¥»¥Ã¥È¤·¤Þ¤¹¡£
.Pp
.Fn closedir
´Ø¿ô¤Ï¡¢Ì¾Á°¤ÎÉÕ¤¤¤¿
.Em ¥Ç¥£¥ì¥¯¥È¥ê¥¹¥È¥ê¡¼¥à
¤òÊĤ¸¡¢
.Fa dirp
¥Ý¥¤¥ó¥¿¤ËÂбþ¤¹¤ë¹½Â¤¤ò²òÊü¤·¡¢½èÍý¤¬À®¸ù¤·¤¿¾ì¹ç¤Ï 0 ¤òÊÖ¤·¤Þ¤¹¡£
½èÍý¤¬¼ºÇÔ¤¹¤ë¤È¡¢\-1 ¤¬ÊÖ¤µ¤ì¡¢¥°¥í¡¼¥Ð¥ëÊÑ¿ô
.Va errno
¤¬ÀßÄꤵ¤ì¤Æ¥¨¥é¡¼¤ò¼¨¤¹¤è¤¦¤Ë¤Ê¤ê¤Þ¤¹¡£
.Pp
.Fn dirfd
´Ø¿ô¤Ï¡¢Ì¾Á°¤ÎÉÕ¤¤¤¿
.Em ¥Ç¥£¥ì¥¯¥È¥ê¥¹¥È¥ê¡¼¥à
¤ËÂбþ¤¹¤ëÀ°¿ô¥Õ¥¡¥¤¥ëµ­½Ò»Ò¤òÊÖ¤·¤Þ¤¹¡£
.Xr open 2
¤ò»²¾È¤·¤Æ¤¯¤À¤µ¤¤¡£
.Pp
¥Ç¥£¥ì¥¯¥È¥ê¤Ç¥¨¥ó¥È¥ê¡Öname¡×¤ò¸¡º÷¤¹¤ë¥µ¥ó¥×¥ë¥³¡¼¥É¤Ï¼¡¤Î¤È¤ª¤ê¤Ç¤¹¡£
.Bd -literal -offset indent
len = strlen(name);
dirp = opendir(".");
while ((dp = readdir(dirp)) != NULL)
	if (dp->d_namlen == len && !strcmp(dp->d_name, name)) {
		(void)closedir(dirp);
		return FOUND;
	}
(void)closedir(dirp);
return NOT_FOUND;
.Pp
.Sh ´ØÏ¢¹àÌÜ
.Xr close 2 ,
.Xr lseek 2 ,
.Xr open 2 ,
.Xr read 2 ,
.Xr dir 5
.Pp
.Sh Îò»Ë
.Fn opendir ,
.Fn readdir ,
.Fn telldir ,
.Fn seekdir ,
.Fn rewinddir ,
.Fn closedir ,
¤ª¤è¤Ó
.Fn dirfd
¤Î³Æ´Ø¿ô¤Ï
.Bx 4.2
¤Ç¸½¤ì¤Þ¤·¤¿¡£