[linuxjm/LDP_man-pages.git] / draft / man3 / fts.3

.\"     $NetBSD: fts.3,v 1.13.2.1 1997/11/14 02:09:32 mrg Exp $
.\"
.\" Copyright (c) 1989, 1991, 1993, 1994
.\"     The Regents of the University of California.  All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\"    notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\"    notice, this list of conditions and the following disclaimer in the
.\"    documentation and/or other materials provided with the distribution.
.\" 3. All advertising materials mentioning features or use of this software
.\"    must display the following acknowledgement:
.\"     This product includes software developed by the University of
.\"     California, Berkeley and its contributors.
.\" 4. Neither the name of the University nor the names of its contributors
.\"    may be used to endorse or promote products derived from this software
.\"    without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\"     @(#)fts.3       8.5 (Berkeley) 4/16/94
.\"
.\" 2007-12-08, mtk, Converted from mdoc to man macros
.\"
.\" Japanese Version Copyright (c) 2000 Yuichi SATO
.\"         all rights reserved.
.\" Translated Tue Jul 11 19:02:58 JST 2000
.\"         by Yuichi SATO <sato@complex.eng.hokudai.ac.jp>
.\"
.\"WORD:        hierarchy               ³¬ÁØ
.\"WORD:        traverse                ¤¿¤É¤ë
.\"WORD:        pointer                 ¥Ý¥¤¥ó¥¿
.\"WORD:        restore                 Éü¸µ¤¹¤ë
.\"WORD:        null-terminated         NULL ½ªÃ¼¤µ¤ì¤¿
.\"
.TH FTS 3 2007-12-28 "Linux" "Linux Programmer's Manual"
.\"O .SH NAME
.SH ̾Á°
.\"O fts, fts_open, fts_read, fts_children, fts_set, fts_close \- \
.\"O traverse a file hierarchy
fts, fts_open, fts_read, fts_children, fts_set, fts_close \- \
¥Õ¥¡¥¤¥ë³¬Áؤò¤¿¤É¤ë
.\"O .SH SYNOPSIS
.SH ½ñ¼°
.nf
.B #include <sys/types.h>
.B #include <sys/stat.h>
.B #include <fts.h>
.sp
.BI "FTS *fts_open(char * const *" path_argv ", int " options ", "
.BI "              int (*" compar ")(const FTSENT **, const FTSENT **));"
.sp
.BI "FTSENT *fts_read(FTS *" ftsp );
.sp
.BI "FTSENT *fts_children(FTS *" ftsp ", int " options );
.sp
.BI "int fts_set(FTS *" ftsp ", FTSENT *" f ", int " options );
.sp
.BI "int fts_close(FTS *" ftsp );
.fi
.\"O .SH DESCRIPTION
.SH ÀâÌÀ
.\"O The
.\"O fts functions are provided for traversing
.\"O file hierarchies.
.\"O A simple overview is that the
.\"O .BR fts_open ()
.\"O function returns a "handle" on a file hierarchy, which is then supplied to
.\"O the other
.\"O fts functions.
fts ´Ø¿ô·²¤Ï¡¢¥Õ¥¡¥¤¥ë³¬Áؤò¤¿¤É¤ë¤¿¤á¤ËÄ󶡤µ¤ì¤Æ¤¤¤ë¡£
´Êñ¤Ë³µÎ¬¤¹¤ë¤È¼¡¤Î¤è¤¦¤Ë¤Ê¤ë¡£
.BR fts_open ()
´Ø¿ô¤Ï¡¢Â¾¤Î fts ´Ø¿ô·²¤ËÅϤ¹¤¿¤á¤Î¡¢¥Õ¥¡¥¤¥ë³¬ÁؤΡ֥ϥó¥É¥ë¡×¤òÊÖ¤¹¡£
.\"O The function
.\"O .BR fts_read ()
.\"O returns a pointer to a structure describing one of the files in the file
.\"O hierarchy.
.\"O The function
.\"O .BR fts_children ()
.\"O returns a pointer to a linked list of structures, each of which describes
.\"O one of the files contained in a directory in the hierarchy.
.\"O In general, directories are visited two distinguishable times; in preorder
.\"O (before any of their descendants are visited) and in postorder (after all
.\"O of their descendants have been visited).
.\"O Files are visited once.
.\"O It is possible to walk the hierarchy "logically" (ignoring symbolic links)
.\"O or physically (visiting symbolic links), order the walk of the hierarchy or
.\"O prune and/or revisit portions of the hierarchy.
.BR fts_read ()
´Ø¿ô¤Ï¡¢¥Õ¥¡¥¤¥ë³¬ÁØÃæ¤Ë¤¢¤ë 1 ¤Ä¤Î¥Õ¥¡¥¤¥ë¤òµ­½Ò¤¹¤ë¹½Â¤ÂΤؤΥݥ¤¥ó¥¿¤òÊÖ¤¹¡£
.BR fts_children ()
´Ø¿ô¤Ï¡¢³¬ÁØÃæ¤Î¥Ç¥£¥ì¥¯¥È¥ê¤Ë¤¢¤ë¥Õ¥¡¥¤¥ë¤òµ­½Ò¤¹¤ë¹½Â¤ÂΤÎ
¥ê¥ó¥¯¥ê¥¹¥È¤Ø¤Î¥Ý¥¤¥ó¥¿¤òÊÖ¤¹¡£
°ìÈ̤˥ǥ£¥ì¥¯¥È¥ê¤Ï¡¢
preorder (ÀµÊý¸þ¡§²¼¤Î³¬ÁؤΥǥ£¥ì¥¯¥È¥ê¤ò¤¿¤É¤ëÁ°) ¤È
postorder (µÕÊý¸þ¡§²¼¤Î³¬ÁؤΥǥ£¥ì¥¯¥È¥ê¤ò¤¹¤Ù¤Æ¤¿¤É¤Ã¤¿¸å) ¤È¤¤¤¦¡¢
°Û¤Ê¤ëÊý¸þ¤Ç 2 ²ó¤¿¤É¤é¤ì¤ë¡£¥Õ¥¡¥¤¥ë¤Ï 1 ²ó¤¿¤É¤é¤ì¤ë¡£
¥Ç¥£¥ì¥¯¥È¥ê³¬Áؤò¡ÖÏÀÍýŪ¤Ë¡×(¥·¥ó¥Ü¥ê¥Ã¥¯¥ê¥ó¥°¤ò̵»ë¤·¤Æ) °ÜÆ°¤¹¤ë¤³¤È¤â¡¢
ʪÍýŪ¤Ë (¥·¥ó¥Ü¥ê¥Ã¥¯¥ê¥ó¥¯¤ò¤¿¤É¤Ã¤Æ) °ÜÆ°¤¹¤ë¤³¤È¤â²Äǽ¤Ç¤¢¤ë¡£
¤Þ¤¿¡¢³¬ÁØÃæ¤Î°ÜÆ°¤ÎÆ»¶Ú¤ò»Ø¼¨¤¹¤ë¤³¤È¡¦
;ʬ¤Ê¤â¤Î¤ò¼è¤ê½ü¤¯¤³¤È¡¦³¬ÁؤΰìÉô¤òºÆ¤Ó¤¿¤É¤ë¤³¤È¤¬²Äǽ¤Ç¤¢¤ë¡£
.PP
.\"O Two structures are defined (and typedef'd) in the include file
.\"O .IR <fts.h> .
.\"O The first is
.\"O .IR FTS ,
.\"O the structure that represents the file hierarchy itself.
.\"O The second is
.\"O .IR FTSENT ,
.\"O the structure that represents a file in the file
.\"O hierarchy.
.\"O Normally, an
.\"O .I FTSENT
.\"O structure is returned for every file in the file
.\"O hierarchy.
.\"O In this manual page, "file" and
.\"O "FTSENT structure"
.\"O are generally interchangeable.
.\"O The
.\"O .I FTSENT
.\"O structure contains at least the following fields, which are
.\"O described in greater detail below:
2 ¤Ä¤Î¹½Â¤ÂΤ¬¥¤¥ó¥¯¥ë¡¼¥É¥Õ¥¡¥¤¥ë
.I <fts.h>
¤ÇÄêµÁ¤µ¤ì¤Æ¤¤¤ë (¤µ¤é¤Ë typedef ¤µ¤ì¤Æ¤¤¤ë)¡£
1 ¤ÄÌܤϡ¢¥Õ¥¡¥¤¥ë³¬Áؤ½¤Î¤â¤Î¤òɽ¸½¤¹¤ë
.I FTS
¹½Â¤ÂΤǤ¢¤ë¡£
2 ¤ÄÌܤϡ¢¥Õ¥¡¥¤¥ë³¬ÁØÃæ¤Î¥Õ¥¡¥¤¥ë¤òɽ¸½¤¹¤ë
.I FTSENT
¹½Â¤ÂΤǤ¢¤ë¡£
.I FTSENT
¹½Â¤ÂΤÏÄ̾¥Õ¥¡¥¤¥ë³¬ÁØÃæ¤Î¤¹¤Ù¤Æ¤Î¥Õ¥¡¥¤¥ë¤ËÂФ·¤ÆÊÖ¤µ¤ì¤ë¡£
¤³¤Î man ¥Ú¡¼¥¸¤Ç¤Ï¡¢¡Ö¥Õ¥¡¥¤¥ë¡×¤È
.RI ¡Ö FTSENT
¹½Â¤ÂΡפò°ìÈ̤ËÆɤßÊѤ¨¤ë¤³¤È¤¬¤Ç¤­¤ë¡£
.I FTSENT
¹½Â¤ÂΤϡ¢¾¯¤Ê¤¯¤È¤â¼¡¤Î¤è¤¦¤Ê¥Õ¥£¡¼¥ë¥É¤ò»ý¤Ã¤Æ¤ª¤ê¡¢
°Ê²¼¤Ç¤è¤ê¾Ü¤·¤¯ÀâÌÀ¤µ¤ì¤Æ¤¤¤ë¡£
.in +4n
.nf

.\"O typedef struct _ftsent {
.\"O     unsigned short fts_info;     /* flags for FTSENT structure */
.\"O     char          *fts_accpath;  /* access path */
.\"O     char          *fts_path;     /* root path */
.\"O     short          fts_pathlen;  /* strlen(fts_path) */
.\"O     char          *fts_name;     /* filename */
.\"O     short          fts_namelen;  /* strlen(fts_name) */
.\"O     short          fts_level;    /* depth (\-1 to N) */
.\"O     int            fts_errno;    /* file errno */
.\"O     long           fts_number;   /* local numeric value */
.\"O     void          *fts_pointer;  /* local address value */
.\"O     struct ftsent *fts_parent;   /* parent directory */
.\"O     struct ftsent *fts_link;     /* next file structure */
.\"O     struct ftsent *fts_cycle;    /* cycle structure */
.\"O     struct stat   *fts_statp;    /* stat(2) information */
.\"O } FTSENT;
typedef struct _ftsent {
    unsigned short fts_info;     /* FTSENT ¹½Â¤ÂΤΤ¿¤á¤Î¥Õ¥é¥° */
    char          *fts_accpath;  /* ¥¢¥¯¥»¥¹¥Ñ¥¹ */
    char          *fts_path;     /* ¥ë¡¼¥È¥Ñ¥¹ */
    short          fts_pathlen;  /* fts_path ¤ÎŤµ */
    char          *fts_name;     /* ¥Õ¥¡¥¤¥ë̾ */
    short          fts_namelen;  /* fts_name ¤ÎŤµ */
    short          fts_level;    /* ¿¼¤µ (\-1 ¡Á N) */
    int            fts_errno;    /* ¥Õ¥¡¥¤¥ë¤Î¥¨¥é¡¼ÈÖ¹æ */
    long           fts_number;   /* ¥í¡¼¥«¥ë¤ÊÈÖ¹æ */
    void          *fts_pointer;  /* ¥í¡¼¥«¥ë¤Ê¥¢¥É¥ì¥¹ÈÖ¹æ */
    struct ftsent *fts_parent;   /* ¿Æ¥Ç¥£¥ì¥¯¥È¥ê */
    struct ftsent *fts_link;     /* ¼¡¤Î¥Õ¥¡¥¤¥ë¹½Â¤ÂÎ */
    struct ftsent *fts_cycle;    /* ½Û´Ä¤·¤Æ¤¤¤ë¹½Â¤ÂÎ */
    struct stat   *fts_statp;    /* stat(2) ¤Î¾ðÊó */
} FTSENT;
.fi
.in
.PP
.\"O These fields are defined as follows:
¤³¤ì¤é¤Î¥Õ¥£¡¼¥ë¥É¤Ï¡¢¼¡¤Î¤è¤¦¤ËÄêµÁ¤µ¤ì¤Æ¤¤¤ë¡£
.\" .Bl -tag -width "fts_namelen"
.TP 12
.IR fts_info
.\"O One of the following flags describing the returned
.\"O .I FTSENT
.\"O structure and
.\"O the file it represents.
.\"O With the exception of directories without errors
.\"O .RB ( FTS_D ),
.\"O all of these
.\"O entries are terminal, that is, they will not be revisited, nor will any
.\"O of their descendants be visited.
¤³¤Î¥Õ¥£¡¼¥ë¥É¤Ï¡¢ÊÖ¤µ¤ì¤¿
.I FTSENT
¹½Â¤ÂΤȥե¡¥¤¥ë¤òÀâÌÀ¤¹¤ë°Ê²¼¤Î¥Õ¥é¥°¤Î¤¤¤º¤ì¤«¤òɽ¤·¤Æ¤¤¤ë¡£
¥¨¥é¡¼¤Î¤Ê¤¤¥Ç¥£¥ì¥¯¥È¥ê
.RB ( FTS_D ),
¤Î¾ì¹ç¤ÏÎã³°¤È¤·¤Æ¡¢¤½¤ì°Ê³°¤Î¤¹¤Ù¤Æ¤Î¥¨¥ó¥È¥ê¤Ï½ªÃ¼¤Ç¤¢¤ë¡£
¤Ä¤Þ¤ê¡¢¥¨¥ó¥È¥ê¤ÏºÆ¤Ó¤¿¤É¤é¤ì¤ë¤³¤È¤â¤Ê¤¯¡¢
¤½¤ì¤è¤ê²¼¤Î³¬Áؤ¬¤¿¤É¤é¤ì¤ë¤³¤È¤â¤Ê¤¤¡£
.\" .Bl  -tag -width FTS_DEFAULT
.RS 12
.TP 12
.BR FTS_D
.\"O A directory being visited in preorder.
preorder ¤Ç¤¿¤É¤é¤ì¤ë¥Ç¥£¥ì¥¯¥È¥ê¡£
.TP
.BR FTS_DC
.\"O A directory that causes a cycle in the tree.
.\"O (The
.\"O .I fts_cycle
.\"O field of the
.\"O .I FTSENT
.\"O structure will be filled in as well.)
¥Ä¥ê¡¼¤ÎÃæ¤Ç½Û´Ä¤·¤Æ¤¤¤ë¥Ç¥£¥ì¥¯¥È¥ê¡£
.RI ( FTSENT
¹½Â¤ÂΤÎ
.I fts_cycle
¥Õ¥£¡¼¥ë¥É¤âƱÍͤËËä¤á¤é¤ì¤ë¡£)
.TP
.BR FTS_DEFAULT
.\"O Any
.\"O .I FTSENT
.\"O structure that represents a file type not explicitly described
.\"O by one of the other
.\"O .I fts_info
.\"O values.
¥Õ¥¡¥¤¥ë¥¿¥¤¥×¤òɽ¸½¤¹¤ë
.I FTSENT
¹½Â¤ÂΤ¬¡¢
.I fts_info
¤Î¾¤Î¤¤¤º¤ì¤«¤ÎÃͤÇÌÀ¼¨Åª¤ËÀâÌÀ¤µ¤ì¤Æ¤¤¤Ê¤¤¡£
.TP
.BR FTS_DNR
.\"O A directory which cannot be read.
.\"O This is an error return, and the
.\"O .I fts_errno
.\"O field will be set to indicate what caused the error.
Æɤ߹þ¤ß¤¬¤Ç¤­¤Ê¤¤¥Ç¥£¥ì¥¯¥È¥ê¡£
¤³¤ì¤Ï¥¨¥é¡¼¤Î¾ì¹ç¤ÎÊÖ¤êÃͤǤ¢¤ê¡¢
²¿¤¬¥¨¥é¡¼¤òµ¯¤³¤·¤¿¤«¤ò¼¨¤¹¤¿¤á¤Ë
.I fts_errno
¥Õ¥£¡¼¥ë¥É¤¬ÀßÄꤵ¤ì¤ë¡£
.TP
.BR FTS_DOT
.\"O A file named
.\"O "."
.\"O or
.\"O ".."
.\"O which was not specified as a filename to
.\"O .BR fts_open ()
.\"O (see
.\"O .BR FTS_SEEDOT ).
.BR fts_open ()
¤Ø¤Î¥Õ¥¡¥¤¥ë̾¤È¤·¤Æ»ØÄꤵ¤ì¤Ê¤«¤Ã¤¿
"." ¤Þ¤¿¤Ï ".."
¤È¤¤¤¦Ì¾Á°¤Î¥Õ¥¡¥¤¥ë
.RB ( FTS_SEEDOT
¤ò»²¾È¤¹¤ë¤³¤È)¡£
.TP
.BR FTS_DP
.\"O A directory being visited in postorder.
.\"O The contents of the
.\"O .I FTSENT
.\"O structure will be unchanged from when
.\"O it was returned in preorder, that is, with the
.\"O .I fts_info
.\"O field set to
.\"O .BR FTS_D .
postorder ¤Ç¤¿¤É¤é¤ì¤ë¥Ç¥£¥ì¥¯¥È¥ê¡£
.I FTSENT
¹½Â¤ÂΤÎÆâÍƤϡ¢preorder ¤Î¤È¤­¤ËÊÖ¤µ¤ì¤¿¾õÂÖ
(¤Ä¤Þ¤ê¡¢
.I fts_info
¥Õ¥£¡¼¥ë¥É¤¬
.B FTS_D
¤ËÀßÄꤵ¤ì¤Æ¤¤¤ë¾õÂÖ) ¤«¤éÊѹ¹¤µ¤ì¤Ê¤¤¡£
.TP
.B FTS_ERR
.\"O This is an error return, and the
.\"O .I fts_errno
.\"O field will be set to indicate what caused the error.
¤³¤ì¤Ï¥¨¥é¡¼¤Î¾ì¹ç¤ÎÊÖ¤êÃͤǤ¢¤ê¡¢
.I fts_errno
¥Õ¥£¡¼¥ë¥É¤Ï¡¢²¿¤¬¥¨¥é¡¼¤òµ¯¤³¤·¤¿¤«¤ò¼¨¤¹ÃͤËÀßÄꤵ¤ì¤ë¡£
.TP
.B FTS_F
.\"O A regular file.
Ä̾ï¤Î¥Õ¥¡¥¤¥ë¡£
.TP
.B FTS_NS
.\"O A file for which no
.\"O .BR stat (2)
.\"O information was available.
.\"O The contents of the
.\"O .I fts_statp
.\"O field are undefined.
.\"O This is an error return, and the
.\"O .I fts_errno
.\"O field will be set to indicate what caused the error.
.BR stat (2)
¾ðÊó¤¬ÆÀ¤é¤ì¤Ê¤«¤Ã¤¿¥Õ¥¡¥¤¥ë¡£
.I fts_statp
¥Õ¥£¡¼¥ë¥É¤ÎÆâÍƤÏÄêµÁ¤µ¤ì¤Ê¤¤¡£
¤³¤ì¤Ï¥¨¥é¡¼¤Î¾ì¹ç¤ÎÊÖ¤êÃͤǤ¢¤ê¡¢
.I fts_errno
¥Õ¥£¡¼¥ë¥É¤Ï¡¢²¿¤¬¥¨¥é¡¼¤òµ¯¤³¤·¤¿¤«¤ò¼¨¤¹ÃͤËÀßÄꤵ¤ì¤ë¡£
.TP
.B FTS_NSOK
.\"O A file for which no
.\"O .BR stat (2)
.\"O information was requested.
.\"O The contents of the
.\"O .I fts_statp
.\"O field are undefined.
.BR stat (2)
¾ðÊó¤¬Í׵ᤵ¤ì¤Ê¤«¤Ã¤¿¥Õ¥¡¥¤¥ë¡£
.I fts_statp
¥Õ¥£¡¼¥ë¥É¤ÎÆâÍƤÏÄêµÁ¤µ¤ì¤Ê¤¤¡£
.TP
.B FTS_SL
.\"O A symbolic link.
¥·¥ó¥Ü¥ê¥Ã¥¯¥ê¥ó¥¯¡£
.TP
.B FTS_SLNONE
.\"O A symbolic link with a non-existent target.
.\"O The contents of the
.\"O .I fts_statp
.\"O field reference the file characteristic information for the symbolic link
.\"O itself.
¥ê¥ó¥¯Àè¤Î¸ºß¤·¤Ê¤¤¥·¥ó¥Ü¥ê¥Ã¥¯¥ê¥ó¥¯¡£
.I fts_statp
¥Õ¥£¡¼¥ë¥É¤ÎÆâÍƤϡ¢¥·¥ó¥Ü¥ê¥Ã¥¯¥ê¥ó¥¯¤½¤Î¤â¤Î¤Î¥Õ¥¡¥¤¥ëÆÃÀ­¾ðÊó¤ò»²¾È¤¹¤ë¡£
.\" .El
.RE
.TP
.IR fts_accpath
.\"O A path for accessing the file from the current directory.
¸½ºß¤Î¥Ç¥£¥ì¥¯¥È¥ê¤«¤é¥Õ¥¡¥¤¥ë¤Ë¥¢¥¯¥»¥¹¤¹¤ë¤¿¤á¤Î¥Ñ¥¹¡£
.TP
.IR fts_path
.\"O The path for the file relative to the root of the traversal.
.\"O This path contains the path specified to
.\"O .BR fts_open ()
.\"O as a prefix.
³¬Áؤò¤¿¤É¤ë¤È¤­¤Î¥ë¡¼¥È¤«¤é¤ß¤¿¥Õ¥¡¥¤¥ë¤ÎÁêÂÐŪ¤Ê¥Ñ¥¹¡£
¤³¤Î¥Ñ¥¹¤Ë¤Ï¡¢
.BR fts_open ()
¤Ë»ØÄꤷ¤¿¥Ñ¥¹¤¬¥×¥ì¥Õ¥£¥Ã¥¯¥¹¤È¤·¤Æ´Þ¤Þ¤ì¤ë¡£
.TP
.IR fts_pathlen
.\"O The length of the string referenced by
.\"O .IR fts_path .
.I fts_path
¤Ç»²¾È¤µ¤ì¤ëʸ»úÎó¤ÎŤµ¡£
.TP
.IR fts_name
.\"O The name of the file.
¥Õ¥¡¥¤¥ë¤Î̾Á°¡£
.TP
.IR fts_namelen
.\"O The length of the string referenced by
.\"O .IR fts_name .
.I fts_name
¤Ç»²¾È¤µ¤ì¤ëʸ»úÎó¤ÎŤµ¡£
.TP
.IR fts_level
.\"O The depth of the traversal, numbered from \-1 to N, where this file
.\"O was found.
.\"O The
.\"O .I FTSENT
.\"O structure representing the parent of the starting point (or root)
.\"O of the traversal is numbered \-1, and the
.\"O .I FTSENT
.\"O structure for the root
.\"O itself is numbered 0.
³¬Áؤò¤¿¤É¤Ã¤Æ¡¢¤³¤Î¥Õ¥¡¥¤¥ë¤¬¤ß¤Ä¤«¤Ã¤¿¿¼¤µ¡£
\-1 ¡Á N ¤Î¿ôÃͤÇɽ¤µ¤ì¤ë¡£
³¬Áؤò¤¿¤É¤ë¤È¤­¤Î½ÐȯÅÀ (¥ë¡¼¥È) ¤Î¿Æ¥Ç¥£¥ì¥¯¥È¥ê¤òɽ¤¹
.I FTSENT
¹½Â¤ÂÎ¤Ç¤Ï \-1 ¤È¤Ê¤ë¡£
¤Þ¤¿¡¢¥ë¡¼¥È¼«¿È¤Î
.I FTSENT
¹½Â¤ÂÎ¤Ç¤Ï 0 ¤Ë¤Ê¤ë¡£
.TP
.IR fts_errno
.\"O Upon return of a
.\"O .I FTSENT
.\"O structure from the
.\"O .BR fts_children ()
.\"O or
.\"O .BR fts_read ()
.\"O functions, with its
.\"O .I fts_info
.\"O field set to
.\"O .BR FTS_DNR ,
.\"O .B FTS_ERR
.\"O or
.\"O .BR FTS_NS ,
.\"O the
.\"O .I fts_errno
.\"O field contains the value of the external variable
.\"O .I errno
.\"O specifying the cause of the error.
.\"O Otherwise, the contents of the
.\"O .I fts_errno
.\"O field are undefined.
´Ø¿ô
.BR fts_children ()
¤È
.BR fts_read ()
¤«¤éÊÖ¤µ¤ì¤ë
.I FTSENT
¹½Â¤ÂΤÎ
.I fts_info
¥Õ¥£¡¼¥ë¥É¤¬
.BR FTS_DNR ,
.BR FTS_ERR ,
.B FTS_NS
¤ËÀßÄꤵ¤ì¤Æ¤¤¤ë¾ì¹ç¡¢
.I fts_errno
¥Õ¥£¡¼¥ë¥É¤Ë¤Ï¥¨¥é¡¼¤Î¸¶°ø¤ò¼¨¤¹³°ÉôÊÑ¿ô
.I errno
¤ÎÃͤ¬Æþ¤ë¡£
¤½¤ì°Ê³°¤Î¾ì¹ç¡¢
.I fts_errno
¥Õ¥£¡¼¥ë¥É¤ÎÆâÍƤÏÄêµÁ¤µ¤ì¤Ê¤¤¡£
.TP
.IR fts_number
.\"O This field is provided for the use of the application program and is
.\"O not modified by the
.\"O fts functions.
.\"O It is initialized to 0.
¤³¤Î¥Õ¥£¡¼¥ë¥É¤Ï¡¢¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¥×¥í¥°¥é¥à¤«¤é»ÈÍѤ¹¤ë¤¿¤á¤ËÄ󶡤µ¤ì¡¢
fts ´Ø¿ô·²¤Ç¤ÏÊѹ¹¤µ¤ì¤Ê¤¤¡£
¤³¤Î¥Õ¥£¡¼¥ë¥É¤Ï 0 ¤Ç½é´ü²½¤µ¤ì¤ë¡£
.TP
.IR fts_pointer
.\"O This field is provided for the use of the application program and is
.\"O not modified by the
.\"O fts functions.
.\"O It is initialized to
.\"O .BR NULL .
¤³¤Î¥Õ¥£¡¼¥ë¥É¤Ï¡¢¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¥×¥í¥°¥é¥à¤«¤é»ÈÍѤ¹¤ë¤¿¤á¤ËÄ󶡤µ¤ì¡¢
fts ´Ø¿ô·²¤Ç¤ÏÊѹ¹¤µ¤ì¤Ê¤¤¡£
¤³¤Î¥Õ¥£¡¼¥ë¥É¤Ï
.B NULL
¤Ç½é´ü²½¤µ¤ì¤ë¡£
.TP
.IR fts_parent
.\"O A pointer to the
.\"O .I FTSENT
.\"O structure referencing the file in the hierarchy
.\"O immediately above the current file, that is, the directory of which this
.\"O file is a member.
.\"O A parent structure for the initial entry point is provided as well,
.\"O however, only the
.\"O .IR fts_level ,
.\"O .I fts_number
.\"O and
.\"O .I fts_pointer
.\"O fields are guaranteed to be initialized.
¸½ºß¤Î¥Õ¥¡¥¤¥ë¤Î¤¹¤°¾å¤Î³¬Áؤˤ¢¤ë¥Õ¥¡¥¤¥ë
(¤Ä¤Þ¤ê¡¢¸½ºß¤Î¥Õ¥¡¥¤¥ë¤¬¥á¥ó¥Ð¡¼¤Ë¤Ê¤Ã¤Æ¤¤¤ë¥Ç¥£¥ì¥¯¥È¥ê) ¤ò»²¾È¤¹¤ë
.I FTSENT
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ºÇ½é¤Î½ÐȯÅÀ¤ËÂФ·¤Æ¤â¡¢¿Æ¤È¤Ê¤ë¹½Â¤ÂΤÏÍ¿¤¨¤é¤ì¤ë¡£
¤·¤«¤·¡¢
.IR fts_level ,
.IR fts_number ,
.I fts_pointer
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.TP
.IR fts_link
.\"O Upon return from the
.\"O .BR fts_children ()
.\"O function, the
.\"O .I fts_link
.\"O field points to the next structure in the NULL-terminated linked list of
.\"O directory members.
.\"O Otherwise, the contents of the
.\"O .I fts_link
.\"O field are undefined.
.BR fts_children ()
¤«¤éÊÖ¤µ¤ì¤ë¾ì¹ç¡¢
.I fts_link
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¼¡¤Î¹½Â¤ÂΤò»Ø¤·¼¨¤¹¡£
¤½¤ì°Ê³°¤Î¾ì¹ç¡¢
.I fts_link
¥Õ¥£¡¼¥ë¥É¤ÏÄêµÁ¤µ¤ì¤Ê¤¤¡£
.TP
.IR fts_cycle
.\"O If a directory causes a cycle in the hierarchy (see
.\"O .BR FTS_DC ),
.\"O either because
.\"O of a hard link between two directories, or a symbolic link pointing to a
.\"O directory, the
.\"O .I fts_cycle
.\"O field of the structure will point to the
.\"O .I FTSENT
.\"O structure in the hierarchy that references the same file as the current
.\"O .I FTSENT
.\"O structure.
.\"O Otherwise, the contents of the
.\"O .I fts_cycle
.\"O field are undefined.
2 ¤Ä¤Î¥Ç¥£¥ì¥¯¥È¥ê¤Ë¥Ï¡¼¥É¥ê¥ó¥¯¤¬Ä¥¤é¤ì¤Æ¤¤¤ë¤¿¤á¡¢
¤Þ¤¿¤Ï¡¢¥·¥ó¥Ü¥ê¥Ã¥¯¥ê¥ó¥¯¤¬¤¢¤ë¥Ç¥£¥ì¥¯¥È¥ê¤ò»Ø¤·¤Æ¤¤¤ë¤¿¤á¤Ë¡¢
¥Ç¥£¥ì¥¯¥È¥ê¤¬½Û´Ä¤¹¤ë³¬Áع½Â¤¤òºî¤Ã¤Æ¤¤¤ë¾ì¹ç
.RB ( FTS_DC
¤ò»²¾È)¡¢
¹½Â¤ÂΤÎ
.I fts_cycle
¥Õ¥£¡¼¥ë¥É¤Ï¡¢³¬ÁØÃæ¤Ç¸½ºß¤Î
.I FTSENT
¹½Â¤ÂΤÈƱ¤¸¥Õ¥¡¥¤¥ë¤ò»²¾È¤·¤Æ¤¤¤ë
.I FTSENT
¹½Â¤ÂΤò»Ø¤·¼¨¤¹¡£
¤½¤ì°Ê³°¤Î¾ì¹ç¡¢
.I fts_cycle
¥Õ¥£¡¼¥ë¥É¤ÏÄêµÁ¤µ¤ì¤Ê¤¤¡£
.TP
.IR fts_statp
.\"O A pointer to
.\"O .BR stat (2)
.\"O information for the file.
¤³¤Î¥Õ¥¡¥¤¥ë¤Î
.BR stat (2)
¾ðÊó¤Ø¤Î¥Ý¥¤¥ó¥¿¡£
.\" .El
.PP
.\"O A single buffer is used for all of the paths of all of the files in the
.\"O file hierarchy.
.\"O Therefore, the
.\"O .I fts_path
.\"O and
.\"O .I fts_accpath
.\"O fields are guaranteed to be
.\"O null-terminated
.\"O .I only
.\"O for the file most recently returned by
.\"O .BR fts_read ().
.\"O To use these fields to reference any files represented by other
.\"O .I FTSENT
.\"O structures will require that the path buffer be modified using the
.\"O information contained in that
.\"O .I FTSENT
.\"O structure's
.\"O .I fts_pathlen
.\"O field.
.\"O Any such modifications should be undone before further calls to
.\"O .BR fts_read ()
.\"O are attempted.
.\"O The
.\"O .I fts_name
.\"O field is always
.\"O null-terminated.
¥Õ¥¡¥¤¥ë³¬ÁØÃæ¤Î¤¹¤Ù¤Æ¤Î¥Õ¥¡¥¤¥ë¤Î¥Ñ¥¹¤ËÂФ·¤Æ¡¢
¤¿¤À 1 ¤Ä¤Î¥Ð¥Ã¥Õ¥¡¡¼¤¬»È¤ï¤ì¤ë¡£
¤·¤¿¤¬¤Ã¤Æ¡¢
.I fts_path
¤È
.I fts_accpath
¥Õ¥£¡¼¥ë¥É¤Ï¡¢
.BR fts_read ()
¤Ë¤è¤Ã¤ÆÊÖ¤µ¤ì¤¿ºÇ¤â¿·¤·¤¤¥Õ¥¡¥¤¥ë¤ËÂФ·¤Æ¡Ö¤Î¤ß¡×
NULL ½ªÃ¼¤µ¤ì¤ë¤³¤È¤¬Êݾڤµ¤ì¤ë¡£
¤³¤ì¤é¤Î¥Õ¥£¡¼¥ë¥É¤ò¡¢Â¾¤Î
.I FTSENT
¹½Â¤ÂΤÇɽ¸½¤µ¤ì¤ë¥Õ¥¡¥¤¥ë¤ò»²¾È¤¹¤ë¤¿¤á¤Ë»È¤¦¤Ë¤Ï¡¢
.I FTSENT
¹½Â¤ÂΤÎ
.I fts_pathlen
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¤³¤ì¤é¤Î½¤Àµ¤Ï¡¢¤µ¤é¤Ë
.BR fts_read ()
¤ò¸Æ¤Ó½Ð¤½¤¦¤È¤¹¤ë¾ì¹ç¤Ë¤Ï¡¢¸µ¤ËÌᤷ¤Æ¤ª¤«¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£
.I fts_name
¥Õ¥£¡¼¥ë¥É¤Ï¡¢¾ï¤Ë
.B NUL
½ªÃ¼¤µ¤ì¤ë¡£
.SS fts_open()
.\"O The
.\"O .BR fts_open ()
.\"O function takes a pointer to an array of character pointers naming one
.\"O or more paths which make up a logical file hierarchy to be traversed.
.\"O The array must be terminated by a
.\"O .B NULL
.\"O pointer.
.BR fts_open ()
´Ø¿ô¤Ï¡¢Ê¸»úÎó¥Ý¥¤¥ó¥¿¤ÎÇÛÎó¤Ø¤Î¥Ý¥¤¥ó¥¿¤ò°ú¤­¿ô¤Ë¼è¤ë¡£
¤³¤Îʸ»úÎó¥Ý¥¤¥ó¥¿¤Ï¡¢ÏÀÍý¥Õ¥¡¥¤¥ë³¬Áؤò¤Ä¤¯¤ë 1 ¤Ä°Ê¾å¤Î¥Ñ¥¹¤Î̾Á°¤Ë¤Ê¤ë¡£
ÇÛÎó¤Ï¡¢
.B NULL
¥Ý¥¤¥ó¥¿¤Ç½ªÃ¼¤µ¤ì¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£
.PP
.\"O There are
.\"O a number of options, at least one of which (either
.\"O .B FTS_LOGICAL
.\"O or
.\"O .BR FTS_PHYSICAL )
.\"O must be specified.
.\"O The options are selected by
.\"O .IR or ing
.\"O the following values:
¿¤¯¤Î¥ª¥×¥·¥ç¥ó¤¬¤¢¤ê¡¢¾¯¤Ê¤¯¤È¤â 1 ¤Ä
.RB ( FTS_LOGICAL
¤Þ¤¿¤Ï
.BR FTS_PHYSICAL )
¤¬»ØÄꤵ¤ì¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£
¼¡¤Î¥ª¥×¥·¥ç¥ó¤¬
.I or
¤ò¤È¤Ã¤ÆÁªÂò¤µ¤ì¤ë¡£
.\" .Bl -tag -width "FTS_PHYSICAL"
.TP
.B FTS_COMFOLLOW
.\"O This option causes any symbolic link specified as a root path to be
.\"O followed immediately whether or not
.\"O .B FTS_LOGICAL
.\"O is also specified.
¤³¤Î¥ª¥×¥·¥ç¥ó¤Ï¡¢
.B FTS_LOGICAL
¤Î»ØÄê¤Ë¤«¤«¤ï¤é¤º¡¢
¥ë¡¼¥È¥Ñ¥¹¤Ë»ØÄꤵ¤ì¤¿¥·¥ó¥Ü¥ê¥Ã¥¯¥ê¥ó¥¯¤ò¤¹¤°¤Ë¤¿¤É¤é¤»¤ë¡£
.TP
.B FTS_LOGICAL
.\"O This option causes the
.\"O fts routines to return
.\"O .I FTSENT
.\"O structures for the targets of symbolic links
.\"O instead of the symbolic links themselves.
.\"O If this option is set, the only symbolic links for which
.\"O .I FTSENT
.\"O structures
.\"O are returned to the application are those referencing non-existent files.
.\"O Either
.\"O .B FTS_LOGICAL
.\"O or
.\"O .B FTS_PHYSICAL
.\"O .I must
.\"O be provided to the
.\"O .BR fts_open ()
.\"O function.
¤³¤Î¥ª¥×¥·¥ç¥ó¤Ï¡¢
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¥·¥ó¥Ü¥ê¥Ã¥¯¥ê¥ó¥¯¤¬»Ø¤·¤Æ¤¤¤ë¥Õ¥¡¥¤¥ë¤Î
.I FTSENT
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.I FTSENT
¹½Â¤ÂΤ¬¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¤ËÊÖ¤µ¤ì¤ë¤è¤¦¤Ê
¥·¥ó¥Ü¥ê¥Ã¥¯¥ê¥ó¥¯¤Î¤ß¤¬¡¢Â¸ºß¤·¤Ê¤¤¥Õ¥¡¥¤¥ë¤ò»²¾È¤·¤Æ¤¤¤ë¡£
.B FTS_LOGICAL
¤Þ¤¿¤Ï
.B FTS_PHYSICAL
¤Î¤É¤Á¤é¤«¤ò¡¢
.BR fts_open ()
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.TP
.B FTS_NOCHDIR
.\"O As a performance optimization, the
.\"O fts functions change directories as they walk the file hierarchy.
.\"O This has the side-effect that an application cannot rely on being
.\"O in any particular directory during the traversal.
.\"O The
.\"O .B FTS_NOCHDIR
.\"O option turns off this optimization, and the
.\"O fts functions will not change the current directory.
.\"O Note that applications should not themselves change their current directory
.\"O and try to access files unless
.\"O .B FTS_NOCHDIR
.\"O is specified and absolute
.\"O pathnames were provided as arguments to
.\"O .BR fts_open ().
¥Ñ¥Õ¥©¡¼¥Þ¥ó¥¹¤ÎºÇŬ²½¤Î¤¿¤á¡¢
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¤³¤ì¤Ë¤Ï¡¢³¬Áؤò¤¿¤É¤Ã¤Æ¤¤¤ë´Ö¤Ï
¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¤¬¤¢¤ëÆÃÄê¤Î¥Ç¥£¥ì¥¯¥È¥ê¤Ë¤¤¤ë¤È¤¤¤¦¤³¤È¤Ë
°Í¸¤Ç¤­¤Ê¤¤¡¢¤È¤¤¤¦ÉûºîÍѤ¬¤¢¤ë¡£
.B FTS_NOCHDIR
¥ª¥×¥·¥ç¥ó¤ÇºÇŬ²½¤ò̵¸ú¤Ë¤¹¤ë¤È¡¢
fts ´Ø¿ô·²¤Ï¸½ºß¤Î¥Ç¥£¥ì¥¯¥È¥ê¤òÊѹ¹¤·¤Ê¤¤¡£
.B FTS_NOCHDIR
¤¬»ØÄꤵ¤ì¡¢¤«¤Ä
.BR fts_open ()
¤Î°ú¤­¿ô¤È¤·¤ÆÀäÂХѥ¹Ì¾¤¬Í¿¤¨¤é¤ì¤¿¤È¤­°Ê³°¡¢¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¤Ï¡¢
¼«¤é¥«¥ì¥ó¥È¥Ç¥£¥ì¥¯¥È¥ê¤òÊѹ¹¤·¤¿¤ê¡¢
¥Õ¥¡¥¤¥ë¤Ë¥¢¥¯¥»¥¹¤·¤¿¤ê¤¹¤Ù¤­¤Ç¤Ï¤Ê¤¤¡¢¤È¤¤¤¦ÅÀ¤ËÃí°Õ¤¹¤ë¤³¤È¡£
.TP
.B FTS_NOSTAT
.\"O By default, returned
.\"O .I FTSENT
.\"O structures reference file characteristic information (the
.\"O .I statp
.\"O field) for each file visited.
.\"O This option relaxes that requirement as a performance optimization,
.\"O allowing the
.\"O fts functions to set the
.\"O .I fts_info
.\"O field to
.\"O .B FTS_NSOK
.\"O and leave the contents of the
.\"O .I statp
.\"O field undefined.
¥Ç¥Õ¥©¥ë¥È¤Ç¤Ï¡¢ÊÖ¤µ¤ì¤¿
.I FTSENT
¹½Â¤ÂΤϡ¢¤¿¤É¤é¤ì¤¿³Æ¥Õ¥¡¥¤¥ë¤Ë¤Ä¤¤¤Æ¤Î¥Õ¥¡¥¤¥ëÆÃħ¾ðÊó
.I ( statp
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¤³¤Î¥ª¥×¥·¥ç¥ó¤Ï¡¢
fts ´Ø¿ô·²¤¬
.I fts_info
¥Õ¥£¡¼¥ë¥É¤ò
.B FTS_NSOK
¤ËÀßÄꤷ
.I statp
¤ÎÆâÍƤòÄêµÁ¤µ¤ì¤Ê¤¤¤Þ¤Þ¤Ë¤¹¤ë¤³¤È¤òµö¤¹¤³¤È¤Ë¤è¤ê¡¢
¥Ñ¥Õ¥©¡¼¥Þ¥ó¥¹¤ÎºÇŬ²½¤ËɬÍפʤâ¤Î¤ò´ËϤ¹¤ë¡£
.TP
.B FTS_PHYSICAL
.\"O This option causes the
.\"O fts routines to return
.\"O .I FTSENT
.\"O structures for symbolic links themselves instead
.\"O of the target files they point to.
.\"O If this option is set,
.\"O .I FTSENT
.\"O structures for all symbolic links in the
.\"O hierarchy are returned to the application.
.\"O Either
.\"O .B FTS_LOGICAL
.\"O or
.\"O .B FTS_PHYSICAL
.\"O .I must
.\"O be provided to the
.\"O .BR fts_open ()
.\"O function.
¤³¤Î¥ª¥×¥·¥ç¥ó¤Ï¡¢
fts ¥ë¡¼¥Á¥ó¤Ë¥·¥ó¥Ü¥ê¥Ã¥¯¥ê¥ó¥¯¤¬»Ø¤·¤Æ¤¤¤ë¥Õ¥¡¥¤¥ë¤Ç¤Ï¤Ê¤¯¡¢
¥·¥ó¥Ü¥ê¥Ã¥¯¥ê¥ó¥¯¼«¿È¤Î
.I FTSENT
¹½Â¤ÂΤòÊÖ¤µ¤»¤ë¡£
¤³¤Î¥ª¥×¥·¥ç¥ó¤¬ÀßÄꤵ¤ì¤ë¤È¡¢³¬ÁØÃæ¤Î¤¹¤Ù¤Æ¤Î¥·¥ó¥Ü¥ê¥Ã¥¯¥ê¥ó¥¯¤Î
.I FTSENT
¹½Â¤ÂΤ¬¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¤ËÊÖ¤µ¤ì¤ë¡£
.B FTS_LOGICAL
¤Þ¤¿¤Ï
.B FTS_PHYSICAL
¤Î¤É¤Á¤é¤«¤ò
.BR fts_open ()
´Ø¿ô¤ËÍ¿¤¨¤Ê¤±¤ì¤Ð¡Ö¤Ê¤é¤Ê¤¤¡×¡£
.TP
.B FTS_SEEDOT
.\"O By default, unless they are specified as path arguments to
.\"O .BR fts_open (),
.\"O any files named
.\"O "."
.\"O or
.\"O ".."
.\"O encountered in the file hierarchy are ignored.
.\"O This option causes the
.\"O fts routines to return
.\"O .I FTSENT
.\"O structures for them.
¥Ç¥Õ¥©¥ë¥È¤Ç¤Ï¡¢
.BR fts_open ()
¤Î¥Ñ¥¹°ú¤­¿ô¤È¤·¤Æ»ØÄꤵ¤ì¤Ê¤¤¸Â¤ê¡¢¥Õ¥¡¥¤¥ë³¬ÁØÃæ¤Ë¤¢¤ë
"." ¤Þ¤¿¤Ï ".." ¤È¤¤¤¦Ì¾Á°¤Î¥Õ¥¡¥¤¥ë¤Ï̵»ë¤µ¤ì¤ë¡£
¤³¤Î¥ª¥×¥·¥ç¥ó¤Ï¡¢
fts ¥ë¡¼¥Á¥ó¤Ë¤³¤ì¤é¤Î¥Õ¥¡¥¤¥ë¤Î
.I FTSENT
¹½Â¤ÂΤòÊÖ¤µ¤»¤ë¡£
.TP
.B FTS_XDEV
.\"O This option prevents
.\"O fts from descending into directories that have a different device number
.\"O than the file from which the descent began.
¤³¤Î¥ª¥×¥·¥ç¥ó¤Ï¡¢
fts ¤¬²¼¤ê»Ï¤á¤Î¥Õ¥¡¥¤¥ë¤È¤Ï°Û¤Ê¤ë¥Ç¥Ð¥¤¥¹ÈÖ¹æ¤ò»ý¤Ã¤Æ¤¤¤ë
¥Ç¥£¥ì¥¯¥È¥ê¤Ë²¼¤ê¤ë¤Î¤òÁ˻ߤ¹¤ë¡£
.\" .El
.PP
.\"O The argument
.\"O .BR compar ()
.\"O specifies a user-defined function which may be used to order the traversal
.\"O of the hierarchy.
.\"O It
.\"O takes two pointers to pointers to
.\"O .I FTSENT
.\"O structures as arguments and
.\"O should return a negative value, zero, or a positive value to indicate
.\"O if the file referenced by its first argument comes before, in any order
.\"O with respect to, or after, the file referenced by its second argument.
.\"O The
.\"O .IR fts_accpath ,
.\"O .I fts_path
.\"O and
.\"O .I fts_pathlen
.\"O fields of the
.\"O .I FTSENT
.\"O structures may
.\"O .I never
.\"O be used in this comparison.
.\"O If the
.\"O .I fts_info
.\"O field is set to
.\"O .B FTS_NS
.\"O or
.\"O .BR FTS_NSOK ,
.\"O the
.\"O .I fts_statp
.\"O field may not either.
.\"O If the
.\"O .BR compar ()
.\"O argument is
.\"O .BR NULL ,
.\"O the directory traversal order is in the order listed in
.\"O .I path_argv
.\"O for the root paths, and in the order listed in the directory for
.\"O everything else.
°ú¤­¿ô
.BR compar ()
¤Ï¡¢³¬Áؤò¤¿¤É¤ë½çÈÖ¤ò·è¤á¤ë¤Î¤Ë»È¤ï¤ì¤ë¥æ¡¼¥¶¡¼ÄêµÁ´Ø¿ô¤ò»ØÄꤹ¤ë¡£
¤³¤Î´Ø¿ô¤Ï¡¢°ú¤­¿ô¤È¤·¤Æ
.I FTSENT
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1 ÈÖÌܤΰú¤­¿ô¤Ç»²¾È¤µ¤ì¤Æ¤¤¤ë¥Õ¥¡¥¤¥ë¤¬
2 ÈÖÌܤΰú¤­¿ô¤Ç»²¾È¤µ¤ì¤Æ¤¤¤ë¥Õ¥¡¥¤¥ë¤è¤ê
Á°¤Ë¤¢¤ë¾ì¹ç¤ÏÉé¤ÎÃÍ¡¦Æ±¤¸¾ì¹ç¤Ï¥¼¥í¡¦¸å¤Ë¤¢¤ë¾ì¹ç¤ÏÀµ¤ÎÃͤò
ÊÖ¤µ¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£
.I FTSENT
¹½Â¤ÂΤÎ
.IR fts_accpath ,
.IR fts_path ,
.I fts_pathlen
¥Õ¥£¡¼¥ë¥É¤Ï¡¢¤³¤ÎÈæ³Ó¤Ë¡ÖÀäÂС׻ȤäƤϤ¤¤±¤Ê¤¤¡£
.I fts_info
¥Õ¥£¡¼¥ë¥É¤¬
.B FTS_NS
¤Þ¤¿¤Ï
.B FTS_NSOK
¤ËÀßÄꤵ¤ì¤ë¾ì¹ç¡¢
.I fts_statp
¥Õ¥£¡¼¥ë¥É¤Ï¤³¤ì¤é¤Î¤É¤Á¤é¤Ç¤â¤Ê¤¤¡£
.BR compar ()
°ú¤­¿ô¤¬
.B NULL
¤Î¾ì¹ç¡¢¥Ç¥£¥ì¥¯¥È¥ê¤ò¤¿¤É¤ë½çÈ֤ϡ¢¥ë¡¼¥È¥Ñ¥¹¤Ë¤Ä¤¤¤Æ¤Ï
.I path_argv
¤Î¤Ê¤«¤Ç¥ê¥¹¥È¤µ¤ì¤¿½çÈ֤ǡ¢
¤½¤Î¾¤Î¥Õ¥¡¥¤¥ë¤Ë¤Ä¤¤¤Æ¤Ï¥Ç¥£¥ì¥¯¥È¥êÆâ¤Ç¥ê¥¹¥È¤µ¤ì¤¿½çÈ֤Ȥʤ롣
.SS fts_read()
.\"O The
.\"O .BR fts_read ()
.\"O function returns a pointer to an
.\"O .I FTSENT
.\"O structure describing a file in
.\"O the hierarchy.
.\"O Directories (that are readable and do not cause cycles) are visited at
.\"O least twice, once in preorder and once in postorder.
.\"O All other files are visited at least once.
.\"O (Hard links between directories that do not cause cycles or symbolic
.\"O links to symbolic links may cause files to be visited more than once,
.\"O or directories more than twice.)
.BR fts_read ()
´Ø¿ô¤Ï¡¢³¬ÁØÃæ¤Î¥Õ¥¡¥¤¥ë¤òµ­½Ò¤¹¤ë
.I FTSENT
¹½Â¤ÂΤؤΥݥ¤¥ó¥¿¤òÊÖ¤¹¡£
(Æɤ߹þ¤ß²Äǽ¤Ç¡¢½Û´Ä¤·¤Æ¤¤¤Ê¤¤) ¥Ç¥£¥ì¥¯¥È¥ê¤Ï¡¢
1 ²ó¤Ï preorder ¤Ç¡¢¤â¤¦ 1 ²ó¤Ï postorder ¤Ç¡¢¾¯¤Ê¤¯¤È¤â 2 ²ó¤¿¤É¤é¤ì¤ë¡£
¾¤Î¥Õ¥¡¥¤¥ë¤Ï¡¢¾¯¤Ê¤¯¤È¤â 1 ²ó¤¿¤É¤é¤ì¤ë¡£
(¥Ç¥£¥ì¥¯¥È¥ê´Ö¤Î¥Ï¡¼¥É¥ê¥ó¥¯¤Ë¤è¤Ã¤Æ
½Û´Ä¤ä¥·¥ó¥Ü¥ê¥Ã¥¯¥ê¥ó¥¯¤Ø¤Î¥·¥ó¥Ü¥ê¥Ã¥¯¥ê¥ó¥¯¤¬µ¯¤³¤é¤Ê¤¤¾ì¹ç¡¢
¥Õ¥¡¥¤¥ë¤Ï 2 ²ó°Ê¾å¡¢¥Ç¥£¥ì¥¯¥È¥ê¤Ï 3 ²ó°Ê¾å¤¿¤É¤é¤ì¤ë¡£)
.PP
.\"O If all the members of the hierarchy have been returned,
.\"O .BR fts_read ()
.\"O returns
.\"O .B NULL
.\"O and sets the external variable
.\"O .I errno
.\"O to 0.
.\"O If an error unrelated to a file in the hierarchy occurs,
.\"O .BR fts_read ()
.\"O returns
.\"O .B NULL
.\"O and sets
.\"O .I errno
.\"O appropriately.
.\"O If an error related to a returned file occurs, a pointer to an
.\"O .I FTSENT
.\"O structure is returned, and
.\"O .I errno
.\"O may or may not have been set (see
.\"O .IR fts_info ).
³¬ÁØÃæ¤Î¤¹¤Ù¤Æ¤Î¥á¥ó¥Ð¡¼¤¬ÊÖ¤µ¤ì¤¿¾ì¹ç¡¢
.BR fts_read ()
¤Ï
.B NULL
¤òÊÖ¤·¡¢³°ÉôÊÑ¿ô
.I errno
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³¬ÁØÃæ¤Î¥Õ¥¡¥¤¥ë¤Ë´Ø·¸¤·¤Ê¤¤¥¨¥é¡¼¤¬µ¯¤³¤Ã¤¿¾ì¹ç¡¢
.BR fts_read ()
¤Ï
.B NULL
¤òÊÖ¤·¡¢
.I errno
¤ò¥¨¥é¡¼¤ËÂбþ¤·¤¿Ãͤˤ¹¤ë¡£
³¬ÁØÃæ¤Î¥Õ¥¡¥¤¥ë¤Ë´Ø·¸¤·¤¿¥¨¥é¡¼¤¬µ¯¤³¤Ã¤¿¾ì¹ç¡¢
.I FTSENT
¹½Â¤ÂΤؤΥݥ¤¥ó¥¿¤¬ÊÖ¤µ¤ì¡¢
.I errno
¤ÏÀßÄꤵ¤ì¤ë¾ì¹ç¤ÈÀßÄꤵ¤ì¤Ê¤¤¾ì¹ç¤¬¤¢¤ë
.RI ( fts_info
¤ò»²¾È¤¹¤ë¤³¤È)¡£
.PP
.\"O The
.\"O .I FTSENT
.\"O structures returned by
.\"O .BR fts_read ()
.\"O may be overwritten after a call to
.\"O .BR fts_close ()
.\"O on the same file hierarchy stream, or, after a call to
.\"O .BR fts_read ()
.\"O on the same file hierarchy stream unless they represent a file of type
.\"O directory, in which case they will not be overwritten until after a call to
.\"O .BR fts_read ()
.\"O after the
.\"O .I FTSENT
.\"O structure has been returned by the function
.\"O .BR fts_read ()
.\"O in postorder.
.BR fts_read ()
¤Ë¤è¤Ã¤ÆÊÖ¤µ¤ì¤ë
.I FTSENT
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.BR fts_close ()
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.BR fts_read ()
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.BR fts_read ()
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.I FTSENT
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.BR fts_read ()
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.SS fts_children()
.\"O The
.\"O .BR fts_children ()
.\"O function returns a pointer to an
.\"O .I FTSENT
.\"O structure describing the first entry in a NULL-terminated linked list of
.\"O the files in the directory represented by the
.\"O .I FTSENT
.\"O structure most recently returned by
.\"O .BR fts_read ().
.\"O The list is linked through the
.\"O .I fts_link
.\"O field of the
.\"O .I FTSENT
.\"O structure, and is ordered by the user-specified comparison function, if any.
.\"O Repeated calls to
.\"O .BR fts_children ()
.\"O will recreate this linked list.
.BR fts_children ()
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.I FTSENT
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.BR fts_read ()
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.I FTSENT
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.I FTSENT
¹½Â¤ÂΤÎ
.I fts_link
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.BR fts_children ()
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.PP
.\"O As a special case, if
.\"O .BR fts_read ()
.\"O has not yet been called for a hierarchy,
.\"O .BR fts_children ()
.\"O will return a pointer to the files in the logical directory specified to
.\"O .BR fts_open (),
.\"O that is, the arguments specified to
.\"O .BR fts_open ().
.\"O Otherwise, if the
.\"O .I FTSENT
.\"O structure most recently returned by
.\"O .BR fts_read ()
.\"O is not a directory being visited in preorder,
.\"O or the directory does not contain any files,
.\"O .BR fts_children ()
.\"O returns
.\"O .B NULL
.\"O and sets
.\"O .I errno
.\"O to zero.
.\"O If an error occurs,
.\"O .BR fts_children ()
.\"O returns
.\"O .B NULL
.\"O and sets
.\"O .I errno
.\"O appropriately.
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.BR fts_read ()
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.BR fts_children ()
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.BR fts_open ()
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.BR fts_open ()
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.BR fts_read ()
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.I FTSENT
¹½Â¤ÂΤ¬ preorder ¤Ç¤¿¤É¤é¤ì¤¿¥Ç¥£¥ì¥¯¥È¥ê¤Ç¤Ê¤¤¾ì¹ç¤ä
²¿¤â´Þ¤ó¤Ç¤¤¤Ê¤¤¥Ç¥£¥ì¥¯¥È¥ê¤Î¾ì¹ç¤Ï¡¢
.BR fts_children ()
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.B NULL
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.I errno
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.BR fts_children ()
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.B NULL
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.I errno
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.PP
.\"O The
.\"O .I FTSENT
.\"O structures returned by
.\"O .BR fts_children ()
.\"O may be overwritten after a call to
.\"O .BR fts_children (),
.\"O .BR fts_close ()
.\"O or
.\"O .BR fts_read ()
.\"O on the same file hierarchy stream.
.BR fts_children ()
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.I FTSENT
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.BR fts_children (),
.BR fts_close (),
.BR fts_read ()
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.PP
.\"O .I Option
.\"O may be set to the following value:
.I option
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.\" .Bl -tag -width FTS_NAMEONLY
.TP
.B FTS_NAMEONLY
.\"O Only the names of the files are needed.
.\"O The contents of all the fields in the returned linked list of structures
.\"O are undefined with the exception of the
.\"O .I fts_name
.\"O and
.\"O .I fts_namelen
.\"O fields.
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.IR fts_name ,
.I fts_namelen
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.\" .El
.SS fts_set()
.\"O The function
.\"O .BR fts_set ()
.\"O allows the user application to determine further processing for the
.\"O file
.\"O .I f
.\"O of the stream
.\"O .IR ftsp .
.\"O The
.\"O .BR fts_set ()
.\"O function
.\"O returns 0 on success, and \-1 if an error occurs.
.\"O .I Option
.\"O must be set to one of the following values:
´Ø¿ô
.BR fts_set ()
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¥¹¥È¥ê¡¼¥à
.I ftsp
¤Î¥Õ¥¡¥¤¥ë
.I f
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.BR fts_set ()
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.I option
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.\" .Bl -tag -width FTS_PHYSICAL
.TP
.B FTS_AGAIN
.\"O Re-visit the file; any file type may be revisited.
.\"O The next call to
.\"O .BR fts_read ()
.\"O will return the referenced file.
.\"O The
.\"O .I fts_stat
.\"O and
.\"O .I fts_info
.\"O fields of the structure will be reinitialized at that time,
.\"O but no other fields will have been changed.
.\"O This option is meaningful only for the most recently returned
.\"O file from
.\"O .BR fts_read ().
.\"O Normal use is for postorder directory visits, where it causes the
.\"O directory to be revisited (in both preorder and postorder) as well as all
.\"O of its descendants.
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.BR fts_read ()
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.IR fts_stat ,
.I fts_info
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.BR fts_read ()
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Ä̾ï¤Ï¡¢postorder ¤Ç¥Ç¥£¥ì¥¯¥È¥ê¤ò¤¿¤É¤ë¾ì¹ç¤Ë»ÈÍѤ·¡¢
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.TP
.B FTS_FOLLOW
.\"O The referenced file must be a symbolic link.
.\"O If the referenced file is the one most recently returned by
.\"O .BR fts_read (),
.\"O the next call to

.\"O .BR fts_read ()
.\"O returns the file with the
.\"O .I fts_info
.\"O and
.\"O .I fts_statp
.\"O fields reinitialized to reflect the target of the symbolic link instead
.\"O of the symbolic link itself.
.\"O If the file is one of those most recently returned by
.\"O .BR fts_children (),
.\"O the
.\"O .I fts_info
.\"O and
.\"O .I fts_statp
.\"O fields of the structure, when returned by
.\"O .BR fts_read (),
.\"O will reflect the target of the symbolic link instead of the symbolic link
.\"O itself.
.\"O In either case, if the target of the symbolic link does not exist the
.\"O fields of the returned structure will be unchanged and the
.\"O .I fts_info
.\"O field will be set to
.\"O .BR FTS_SLNONE .
.\"O .PP
.\"O If the target of the link is a directory, the preorder return, followed
.\"O by the return of all of its descendants, followed by a postorder return,
.\"O is done.
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.BR fts_read ()
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.BR fts_read ()
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.IR fts_info ,
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.BR fts_children ()
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.BR fts_read ()
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.IR fts_info ,
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.I fts_info
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.B FTS_SLNONE
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.PP
.\"O If the target of the link is a directory, the preorder return, followed
.\"O by the return of all of its descendants, followed by a postorder return,
.\"O is done.
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¤½¤Î¸å¤Ç postorder ¤ÇÊÖ¤µ¤ì¤ë¡£
.TP
.B FTS_SKIP
.\"O No descendants of this file are visited.
.\"O The file may be one of those most recently returned by either
.\"O .BR fts_children ()
.\"O or
.\"O .BR fts_read ().
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.BR fts_children ()
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.BR fts_read ()
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.\" .El
.SS fts_close()
.\"O The
.\"O .BR fts_close ()
.\"O function closes a file hierarchy stream
.\"O .I ftsp
.\"O and restores the current directory to the directory from which
.\"O .BR fts_open ()
.\"O was called to open
.\"O .IR ftsp .
.\"O The
.\"O .BR fts_close ()
.\"O function
.\"O returns 0 on success, and \-1 if an error occurs.
.BR fts_close ()
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.I ftsp
¤òÊĤ¸¤ë¡£¤½¤·¤Æ¡¢¸½ºß¤Î¥Ç¥£¥ì¥¯¥È¥ê¤ò
.I ftsp
¤ò³«¤¯¤¿¤á¤Ë
.BR fts_open ()
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.BR fts_close ()
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.\"O .SS ERRORS
.SS ¥¨¥é¡¼
.\"O The function
.\"O .BR fts_open ()
.\"O may fail and set
.\"O .I errno
.\"O for any of the errors specified for the library functions
.\"O .BR open (2)
.\"O and
.\"O .BR malloc (3).
´Ø¿ô
.BR fts_open ()
¤¬¼ºÇÔ¤·¤¿¾ì¹ç¡¢
.I errno
¤Ï¡¢¥é¥¤¥Ö¥é¥ê´Ø¿ô
.BR open (2)
¤È
.BR malloc (3)
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.PP
.\"O The function
.\"O .BR fts_close ()
.\"O may fail and set
.\"O .I errno
.\"O for any of the errors specified for the library functions
.\"O .BR chdir (2)
.\"O and
.\"O .BR close (2).
´Ø¿ô
.BR fts_close ()
¤¬¼ºÇÔ¤·¤¿¾ì¹ç¡¢
.I errno
¤Ï¡¢¥é¥¤¥Ö¥é¥ê´Ø¿ô
.BR chdir (2)
¤È
.BR close (2)
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.PP
.\"O The functions
.\"O .BR fts_read ()
.\"O and
.\"O .BR fts_children ()
.\"O may fail and set
.\"O .I errno
.\"O for any of the errors specified for the library functions
.\"O .BR chdir (2),
.\"O .BR malloc (3),
.\"O .BR opendir (3),
.\"O .BR readdir (3)
.\"O and
.\"O .BR stat (2).
´Ø¿ô
.BR fts_read ()
¤È
.BR fts_children ()
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.I errno
¤Ï¡¢¥é¥¤¥Ö¥é¥ê´Ø¿ô
.BR chdir (2),
.BR malloc (3),
.BR opendir (3),
.BR readdir (3),
.BR stat (2)
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.PP
.\"O In addition,
.\"O .BR fts_children (),
.\"O .BR fts_open ()
.\"O and
.\"O .BR fts_set ()
.\"O may fail and set
.\"O .I errno
.\"O as follows:
¹¹¤Ë¡¢
.BR fts_children (),
.BR fts_open (),
.BR fts_set ()
¤¬¼ºÇÔ¤·¤¿¾ì¹ç¡¢
.I errno
¤¬¼¡¤ÎÃͤˤµ¤ì¤ë¡£
.TP
.B EINVAL
.\"O The options were invalid.
¥ª¥×¥·¥ç¥ó¤¬Ìµ¸ú¤Ç¤¢¤Ã¤¿¡£
.\"O .SH VERSIONS
.SH ¥Ð¡¼¥¸¥ç¥ó
.\"O These functions are available in Linux since glibc2.
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.\"O SH "CONFORMING TO"
.SH ½àµò
4.4BSD.
.\" The following statement is years old, and seems no closer to
.\" being true -- mtk
.\"O .\" The
.\"O .\" .I fts
.\"O .\" utility is expected to be included in a future
.\"O .\" POSIX.1
.\"O .\" revision.
.\" .I fts
.\" ¥æ¡¼¥Æ¥£¥ê¥Æ¥£¤Ï¡¢¾­Íè¤Î
.\" POSIX.1
.\" ¥ê¥Ó¥¸¥ç¥ó¤Ë´Þ¤Þ¤ì¤ë¤È´üÂÔ¤µ¤ì¤Æ¤¤¤ë¡£
.\"O .SH SEE ALSO
.SH ´ØÏ¢¹àÌÜ
.BR find (1),
.BR chdir (2),
.BR stat (2),
.BR ftw (3),
.BR qsort (3)