glibc/io/ftw.h
Ulrich Drepper ca10f33858 Update.
2003-11-07  Jakub Jelinek  <jakub@redhat.com>

	* io/ftw.c (NFTW_OLD_NAME, NFTW_NEW_NAME): Define.
	(ftw_dir, ftw_startup): Add __attribute ((noinline)).
	(NFTW_OLD_NAME, NFTW_NEW_NAME): New functions.
	(NFTW_NAME): Only define if !_LIBC, add versioned_symbol
	and compat_symbol.
	* io/ftw64.c (NFTW_OLD_NAME, NFTW_NEW_NAME): Define.
	* io/Versions (libc): Export nftw@@GLIBC_2.3.3
	and nftw64@@GLIBC_2.3.3.

	* io/ftw.h (FTW_ACTIONRETVAL): New flag.
	(FTW_CONTINUE, FTW_STOP, FTW_SKIP_SUBTREE, FTW_SKIP_SIBLINGS): New.
	* io/ftw.c (ftw_dir): Add old_dir argument.
	Clear result if it was FTW_SKIP_SIBLINGS after processing all
	dir entries.  Change cwd back if old_dir != NULL.
	(process_entry): Adjust caller.  Don't change cwd back here.
	Change FTW_SKIP_SUBTREE result to 0.
	(ftw_startup): Adjust ftw_dir caller.
	Clear result if it was FTW_SKIP_SUBTREE or FTW_SKIP_SIBLINGS.
	* io/ftwtest.c (skip_subtree, skip_siblings): New variables.
	(options, main): Add --skip-subtree and --skip-siblings options.
	(cb): Use return FTW_CONTINUE instead of return 0.
	Handle --skip-subtree and --skip-siblings.
	* io/ftwtest-sh: Add tests for FTW_ACTIONRETVAL.
	* manual/filesys.texi: Document FTW_ACTIONRETVAL.
2003-11-07 23:00:00 +00:00

177 lines
5.1 KiB
C

/* Copyright (C) 1992,1996,1997,1998,1999,2003 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
/*
* X/Open Portability Guide 4.2: ftw.h
*/
#ifndef _FTW_H
#define _FTW_H 1
#include <features.h>
#include <sys/types.h>
#include <sys/stat.h>
__BEGIN_DECLS
/* Values for the FLAG argument to the user function passed to `ftw'
and 'nftw'. */
enum
{
FTW_F, /* Regular file. */
#define FTW_F FTW_F
FTW_D, /* Directory. */
#define FTW_D FTW_D
FTW_DNR, /* Unreadable directory. */
#define FTW_DNR FTW_DNR
FTW_NS, /* Unstatable file. */
#define FTW_NS FTW_NS
#if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
FTW_SL, /* Symbolic link. */
# define FTW_SL FTW_SL
#endif
#ifdef __USE_XOPEN_EXTENDED
/* These flags are only passed from the `nftw' function. */
FTW_DP, /* Directory, all subdirs have been visited. */
# define FTW_DP FTW_DP
FTW_SLN /* Symbolic link naming non-existing file. */
# define FTW_SLN FTW_SLN
#endif /* extended X/Open */
};
#ifdef __USE_XOPEN_EXTENDED
/* Flags for fourth argument of `nftw'. */
enum
{
FTW_PHYS = 1, /* Perform physical walk, ignore symlinks. */
# define FTW_PHYS FTW_PHYS
FTW_MOUNT = 2, /* Report only files on same file system as the
argument. */
# define FTW_MOUNT FTW_MOUNT
FTW_CHDIR = 4, /* Change to current directory while processing it. */
# define FTW_CHDIR FTW_CHDIR
FTW_DEPTH = 8 /* Report files in directory before directory itself.*/
# define FTW_DEPTH FTW_DEPTH
# ifdef __USE_GNU
,
FTW_ACTIONRETVAL = 16 /* Assume callback to return FTW_* values instead of
zero to continue and non-zero to terminate. */
# define FTW_ACTIONRETVAL FTW_ACTIONRETVAL
# endif
};
#ifdef __USE_GNU
/* Return values from callback functions. */
enum
{
FTW_CONTINUE = 0, /* Continue with next sibling or for FTW_D with the
first child. */
# define FTW_CONTINUE FTW_CONTINUE
FTW_STOP = 1, /* Return from `ftw' or `nftw' with FTW_STOP as return
value. */
# define FTW_STOP FTW_STOP
FTW_SKIP_SUBTREE = 2, /* Only meaningful for FTW_D: Don't walk through the
subtree, instead just continue with its next
sibling. */
# define FTW_SKIP_SUBTREE FTW_SKIP_SUBTREE
FTW_SKIP_SIBLINGS = 3,/* Continue with FTW_DP callback for current directory
(if FTW_DEPTH) and then its siblings. */
# define FTW_SKIP_SIBLINGS FTW_SKIP_SIBLINGS
};
#endif
/* Structure used for fourth argument to callback function for `nftw'. */
struct FTW
{
int base;
int level;
};
#endif /* extended X/Open */
/* Convenient types for callback functions. */
typedef int (*__ftw_func_t) (__const char *__filename,
__const struct stat *__status, int __flag);
#ifdef __USE_LARGEFILE64
typedef int (*__ftw64_func_t) (__const char *__filename,
__const struct stat64 *__status, int __flag);
#endif
#ifdef __USE_XOPEN_EXTENDED
typedef int (*__nftw_func_t) (__const char *__filename,
__const struct stat *__status, int __flag,
struct FTW *__info);
# ifdef __USE_LARGEFILE64
typedef int (*__nftw64_func_t) (__const char *__filename,
__const struct stat64 *__status,
int __flag, struct FTW *__info);
# endif
#endif
/* Call a function on every element in a directory tree.
This function is a possible cancellation point and therefore not
marked with __THROW. */
#ifndef __USE_FILE_OFFSET64
extern int ftw (__const char *__dir, __ftw_func_t __func, int __descriptors);
#else
# ifdef __REDIRECT
extern int __REDIRECT (ftw, (__const char *__dir, __ftw_func_t __func,
int __descriptors), ftw64);
# else
# define ftw ftw64
# endif
#endif
#ifdef __USE_LARGEFILE64
extern int ftw64 (__const char *__dir, __ftw64_func_t __func,
int __descriptors);
#endif
#ifdef __USE_XOPEN_EXTENDED
/* Call a function on every element in a directory tree. FLAG allows
to specify the behaviour more detailed.
This function is a possible cancellation point and therefore not
marked with __THROW. */
# ifndef __USE_FILE_OFFSET64
extern int nftw (__const char *__dir, __nftw_func_t __func, int __descriptors,
int __flag);
# else
# ifdef __REDIRECT
extern int __REDIRECT (nftw, (__const char *__dir, __nftw_func_t __func,
int __descriptors, int __flag), nftw64);
# else
# define nftw nftw64
# endif
# endif
# ifdef __USE_LARGEFILE64
extern int nftw64 (__const char *__dir, __nftw64_func_t __func,
int __descriptors, int __flag);
# endif
#endif
__END_DECLS
#endif /* ftw.h */