d8d5a39838
hack, thereby allowing future extensions to the structure (e.g., for extended attributes) without rebreaking the ABI. FTSENT now contains a pointer to the parent stream, which fts_compar() can then take advantage of, avoiding the undefined behavior previously warned about. As a consequence of this change, the prototype of the comparison function passed to fts_open() has changed to reflect the required amount of constness for its use. All callers in the tree are updated to use the correct prototype. Comparison functions can now make use of the new parent pointer to access the new stream-specific private data pointer, which is intended to assist creation of reentrant library routines which use fts(3) internally. Not objected to in spirit by: -arch
138 lines
5.6 KiB
C
138 lines
5.6 KiB
C
/*
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. 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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* $FreeBSD$
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*/
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#ifndef _FTS_H_
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#define _FTS_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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int 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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(const struct _ftsent * const *, const struct _ftsent * const *);
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#define FTS_COMFOLLOW 0x001 /* follow command line symlinks */
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#define FTS_LOGICAL 0x002 /* logical walk */
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#define FTS_NOCHDIR 0x004 /* don't change directories */
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#define FTS_NOSTAT 0x008 /* don't get stat info */
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#define FTS_PHYSICAL 0x010 /* physical walk */
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#define FTS_SEEDOT 0x020 /* return dot and dot-dot */
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#define FTS_XDEV 0x040 /* don't cross devices */
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#define FTS_WHITEOUT 0x080 /* return whiteout information */
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#define FTS_OPTIONMASK 0x0ff /* valid user option mask */
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#define FTS_NAMEONLY 0x100 /* (private) child names only */
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#define FTS_STOP 0x200 /* (private) unrecoverable error */
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int fts_options; /* fts_open options, global flags */
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void *fts_clientptr; /* thunk for sort function */
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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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u_short fts_pathlen; /* strlen(fts_path) */
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u_short 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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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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#define FTS_W 14 /* whiteout object */
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u_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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#define FTS_ISW 0x04 /* this is a whiteout object */
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u_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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u_short fts_instr; /* fts_set() instructions */
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struct stat *fts_statp; /* stat(2) information */
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char *fts_name; /* file name */
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FTS *fts_fts; /* back pointer to main FTS */
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} FTSENT;
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#include <sys/cdefs.h>
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__BEGIN_DECLS
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FTSENT *fts_children(FTS *, int);
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int fts_close(FTS *);
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void *fts_get_clientptr(FTS *);
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#define fts_get_clientptr(fts) ((fts)->fts_clientptr)
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FTS *fts_get_stream(FTSENT *);
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#define fts_get_stream(ftsent) ((ftsent)->fts_fts)
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FTS *fts_open(char * const *, int,
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int (*)(const FTSENT * const *, const FTSENT * const *));
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FTSENT *fts_read(FTS *);
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int fts_set(FTS *, FTSENT *, int);
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void fts_set_clientptr(FTS *, void *);
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__END_DECLS
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#endif /* !_FTS_H_ */
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