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Diffstat (limited to 'lib/fts_.h')
| -rw-r--r-- | lib/fts_.h | 216 |
1 files changed, 0 insertions, 216 deletions
diff --git a/lib/fts_.h b/lib/fts_.h deleted file mode 100644 index 2843107ea..000000000 --- a/lib/fts_.h +++ /dev/null @@ -1,216 +0,0 @@ -/* Traverse a file hierarchy. - - Copyright (C) 2004, 2005, 2006 Free Software Foundation, Inc. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2, or (at your option) - any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software Foundation, - Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ - -/* - * Copyright (c) 1989, 1993 - * 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. - * 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.h 8.3 (Berkeley) 8/14/94 - */ - -#ifndef _FTS_H -# define _FTS_H 1 - -# ifdef _LIBC -# include <features.h> -# define _LGPL_PACKAGE 1 -# else -# undef __THROW -# define __THROW -# undef __BEGIN_DECLS -# define __BEGIN_DECLS -# undef __END_DECLS -# define __END_DECLS -# endif - -# include <stddef.h> -# include <sys/types.h> -# include <sys/stat.h> - -typedef struct { - struct _ftsent *fts_cur; /* current node */ - struct _ftsent *fts_child; /* linked list of children */ - struct _ftsent **fts_array; /* sort array */ - dev_t fts_dev; /* starting device # */ - char *fts_path; /* file name for this descent */ - int fts_rfd; /* fd for root */ - int fts_cwd_fd; /* the file descriptor on which the - virtual cwd is open, or AT_FDCWD */ - size_t fts_pathlen; /* sizeof(path) */ - size_t fts_nitems; /* elements in the sort array */ - int (*fts_compar) (struct _ftsent const **, struct _ftsent const **); - /* compare fn */ - -# define FTS_COMFOLLOW 0x0001 /* follow command line symlinks */ -# define FTS_LOGICAL 0x0002 /* logical walk */ -# define FTS_NOCHDIR 0x0004 /* don't change directories */ -# define FTS_NOSTAT 0x0008 /* don't get stat info */ -# define FTS_PHYSICAL 0x0010 /* physical walk */ -# define FTS_SEEDOT 0x0020 /* return dot and dot-dot */ -# define FTS_XDEV 0x0040 /* don't cross devices */ -# define FTS_WHITEOUT 0x0080 /* return whiteout information */ - - /* There are two ways to detect cycles. - The lazy way (which works only with FTS_PHYSICAL), - with which one may process a directory that is a - part of the cycle several times before detecting the cycle. - The `tight' way, whereby fts uses more memory (proportional - to number of `active' directories, aka distance from root - of current tree to current directory -- see active_dir_ht) - to detect any cycle right away. For example, du must use - this option to avoid counting disk space in a cycle multiple - times, but chown -R need not. - The default is to use the constant-memory lazy way, when possible - (see below). - - However, with FTS_LOGICAL (when following symlinks, e.g., chown -L) - using lazy cycle detection is inadequate. For example, traversing - a directory containing a symbolic link to a peer directory, it is - possible to encounter the same directory twice even though there - is no cycle: - dir - ... - slink -> dir - So, when FTS_LOGICAL is selected, we have to use a different - mode of cycle detection: FTS_TIGHT_CYCLE_CHECK. */ -# define FTS_TIGHT_CYCLE_CHECK 0x0100 - - /* Use this flag to enable semantics with which the parent - application may be made both more efficient and more robust. - Whereas the default is to visit each directory in a recursive - traversal (via chdir), using this flag makes it so the initial - working directory is never changed. Instead, these functions - perform the traversal via a virtual working directory, maintained - through the file descriptor member, fts_cwd_fd. */ -# define FTS_CWDFD 0x0200 - -# define FTS_OPTIONMASK 0x03ff /* valid user option mask */ - -# define FTS_NAMEONLY 0x1000 /* (private) child names only */ -# define FTS_STOP 0x2000 /* (private) unrecoverable error */ - int fts_options; /* fts_open options, global flags */ - -# if !_LGPL_PACKAGE - union { - /* This data structure is used if FTS_TIGHT_CYCLE_CHECK is - specified. It records the directories between a starting - point and the current directory. I.e., a directory is - recorded here IFF we have visited it once, but we have not - yet completed processing of all its entries. Every time we - visit a new directory, we add that directory to this set. - When we finish with a directory (usually by visiting it a - second time), we remove it from this set. Each entry in - this data structure is a device/inode pair. This data - structure is used to detect directory cycles efficiently and - promptly even when the depth of a hierarchy is in the tens - of thousands. */ - struct hash_table *ht; - - /* FIXME: rename these two members to have the fts_ prefix */ - /* This data structure uses a lazy cycle-detection algorithm, - as done by rm via cycle-check.c. It's the default, - but it's not appropriate for programs like du. */ - struct cycle_check_state *state; - } fts_cycle; -# endif -} FTS; - -typedef struct _ftsent { - struct _ftsent *fts_cycle; /* cycle node */ - struct _ftsent *fts_parent; /* parent directory */ - struct _ftsent *fts_link; /* next file in directory */ - long fts_number; /* local numeric value */ - void *fts_pointer; /* local address value */ - char *fts_accpath; /* access file name */ - char *fts_path; /* root name; == fts_fts->fts_path */ - int fts_errno; /* errno for this node */ - int fts_symfd; /* fd for symlink */ - size_t fts_pathlen; /* strlen(fts_path) */ - - FTS *fts_fts; /* the file hierarchy itself */ - -# define FTS_ROOTPARENTLEVEL (-1) -# define FTS_ROOTLEVEL 0 - ptrdiff_t fts_level; /* depth (-1 to N) */ - - size_t fts_namelen; /* strlen(fts_name) */ - -# define FTS_D 1 /* preorder directory */ -# define FTS_DC 2 /* directory that causes cycles */ -# define FTS_DEFAULT 3 /* none of the above */ -# define FTS_DNR 4 /* unreadable directory */ -# define FTS_DOT 5 /* dot or dot-dot */ -# define FTS_DP 6 /* postorder directory */ -# define FTS_ERR 7 /* error; errno is set */ -# define FTS_F 8 /* regular file */ -# define FTS_INIT 9 /* initialized only */ -# define FTS_NS 10 /* stat(2) failed */ -# define FTS_NSOK 11 /* no stat(2) requested */ -# define FTS_SL 12 /* symbolic link */ -# define FTS_SLNONE 13 /* symbolic link without target */ -# define FTS_W 14 /* whiteout object */ - unsigned short int fts_info; /* user flags for FTSENT structure */ - -# define FTS_DONTCHDIR 0x01 /* don't chdir .. to the parent */ -# define FTS_SYMFOLLOW 0x02 /* followed a symlink to get here */ - unsigned short int fts_flags; /* private flags for FTSENT structure */ - -# define FTS_AGAIN 1 /* read node again */ -# define FTS_FOLLOW 2 /* follow symbolic link */ -# define FTS_NOINSTR 3 /* no instructions */ -# define FTS_SKIP 4 /* discard node */ - unsigned short int fts_instr; /* fts_set() instructions */ - - struct stat fts_statp[1]; /* stat(2) information */ - char fts_name[1]; /* file name */ -} FTSENT; - -__BEGIN_DECLS -FTSENT *fts_children (FTS *, int) __THROW; -int fts_close (FTS *) __THROW; -FTS *fts_open (char * const *, int, - int (*)(const FTSENT **, const FTSENT **)) __THROW; -FTSENT *fts_read (FTS *) __THROW; -int fts_set (FTS *, FTSENT *, int) __THROW; -__END_DECLS - -#endif /* fts.h */ |