70a8f2272e
POSIX says ftw/nftw "shall fail" in various cases where BSD's fts_open doesn't. Since our ftw/nftw are written in terms of fts_open, add a back door so we can hint to ourselves when we should have the POSIX semantics. Also pull several O_CLOEXEC and don't-null-check-before-free cleanups from upstream, and add a couple of tests. Bug: http://b/31152735 Test: ran bionic tests and LTP "nftw01" test Change-Id: Ib05facacc1da4c8b2ab48e9ecce88f11a5406630
133 lines
5.5 KiB
C
133 lines
5.5 KiB
C
/* $OpenBSD: fts.h,v 1.12 2009/08/27 16:19:27 millert Exp $ */
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/* $NetBSD: fts.h,v 1.5 1994/12/28 01:41:50 mycroft Exp $ */
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/*
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* Copyright (c) 1989, 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. 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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* @(#)fts.h 8.3 (Berkeley) 8/14/94
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*/
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#ifndef _FTS_H_
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#define _FTS_H_
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#include <sys/cdefs.h>
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#include <sys/types.h>
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typedef struct {
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struct _ftsent *fts_cur; /* current node */
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struct _ftsent *fts_child; /* linked list of children */
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struct _ftsent **fts_array; /* sort array */
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dev_t fts_dev; /* starting device # */
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char *fts_path; /* path for this descent */
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int fts_rfd; /* fd for root */
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size_t fts_pathlen; /* sizeof(path) */
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int fts_nitems; /* elements in the sort array */
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int (*fts_compar)(); /* compare function */
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#define FTS_COMFOLLOW 0x0001 /* follow command line symlinks */
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#define FTS_LOGICAL 0x0002 /* logical walk */
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#define FTS_NOCHDIR 0x0004 /* don't change directories */
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#define FTS_NOSTAT 0x0008 /* don't get stat info */
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#define FTS_PHYSICAL 0x0010 /* physical walk */
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#define FTS_SEEDOT 0x0020 /* return dot and dot-dot */
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#define FTS_XDEV 0x0040 /* don't cross devices */
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#define FTS_OPTIONMASK 0x00ff /* valid user option mask */
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#define FTS_NAMEONLY 0x1000 /* (private) child names only */
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#define FTS_STOP 0x2000 /* (private) unrecoverable error */
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#define FTS_FOR_FTW 0x4000 /* (private) fts is being called by ftw/nftw */
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int fts_options; /* fts_open options, global flags */
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} FTS;
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typedef struct _ftsent {
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struct _ftsent *fts_cycle; /* cycle node */
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struct _ftsent *fts_parent; /* parent directory */
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struct _ftsent *fts_link; /* next file in directory */
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long fts_number; /* local numeric value */
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void *fts_pointer; /* local address value */
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char *fts_accpath; /* access path */
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char *fts_path; /* root path */
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int fts_errno; /* errno for this node */
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int fts_symfd; /* fd for symlink */
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size_t fts_pathlen; /* strlen(fts_path) */
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size_t fts_namelen; /* strlen(fts_name) */
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ino_t fts_ino; /* inode */
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dev_t fts_dev; /* device */
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nlink_t fts_nlink; /* link count */
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#define FTS_ROOTPARENTLEVEL -1
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#define FTS_ROOTLEVEL 0
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#define FTS_MAXLEVEL 0x7fff
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short fts_level; /* depth (-1 to N) */
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#define FTS_D 1 /* preorder directory */
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#define FTS_DC 2 /* directory that causes cycles */
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#define FTS_DEFAULT 3 /* none of the above */
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#define FTS_DNR 4 /* unreadable directory */
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#define FTS_DOT 5 /* dot or dot-dot */
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#define FTS_DP 6 /* postorder directory */
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#define FTS_ERR 7 /* error; errno is set */
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#define FTS_F 8 /* regular file */
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#define FTS_INIT 9 /* initialized only */
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#define FTS_NS 10 /* stat(2) failed */
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#define FTS_NSOK 11 /* no stat(2) requested */
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#define FTS_SL 12 /* symbolic link */
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#define FTS_SLNONE 13 /* symbolic link without target */
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unsigned short fts_info; /* user flags for FTSENT structure */
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#define FTS_DONTCHDIR 0x01 /* don't chdir .. to the parent */
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#define FTS_SYMFOLLOW 0x02 /* followed a symlink to get here */
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unsigned short fts_flags; /* private flags for FTSENT structure */
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#define FTS_AGAIN 1 /* read node again */
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#define FTS_FOLLOW 2 /* follow symbolic link */
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#define FTS_NOINSTR 3 /* no instructions */
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#define FTS_SKIP 4 /* discard node */
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unsigned short fts_instr; /* fts_set() instructions */
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struct stat *fts_statp; /* stat(2) information */
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char fts_name[1]; /* file name */
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} FTSENT;
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__BEGIN_DECLS
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/*
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* Strictly these functions were available before Lollipop/21, but there was an accidental ABI
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* breakage in 21 that means you can't write code that runs on current devices and pre-21 devices,
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* so we break the tie in favor of current and future devices.
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*/
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FTSENT* fts_children(FTS* __fts, int __options) __INTRODUCED_IN(21);
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int fts_close(FTS* __fts) __INTRODUCED_IN(21);
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FTS* fts_open(char* const* __path, int __options, int (*__comparator)(const FTSENT** __lhs, const FTSENT** __rhs)) __INTRODUCED_IN(21);
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FTSENT* fts_read(FTS* __fts) __INTRODUCED_IN(21);
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int fts_set(FTS* __fts, FTSENT* __entry, int __options) __INTRODUCED_IN(21);
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__END_DECLS
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#endif /* !_FTS_H_ */
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