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177 lines
5.1 KiB
177 lines
5.1 KiB
/* Copyright (C) 1992-2016 Free Software Foundation, Inc. |
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This file is part of the GNU C Library. |
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The GNU C Library is free software; you can redistribute it and/or |
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modify it under the terms of the GNU Lesser General Public |
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License as published by the Free Software Foundation; either |
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version 2.1 of the License, or (at your option) any later version. |
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The GNU C Library is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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Lesser General Public License for more details. |
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You should have received a copy of the GNU Lesser General Public |
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License along with the GNU C Library; if not, see |
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<http://www.gnu.org/licenses/>. */ |
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/* |
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* X/Open Portability Guide 4.2: ftw.h |
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*/ |
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#ifndef _FTW_H |
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#define _FTW_H 1 |
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#include <features.h> |
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#include <sys/types.h> |
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#include <sys/stat.h> |
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__BEGIN_DECLS |
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/* Values for the FLAG argument to the user function passed to `ftw' |
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and 'nftw'. */ |
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enum |
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{ |
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FTW_F, /* Regular file. */ |
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#define FTW_F FTW_F |
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FTW_D, /* Directory. */ |
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#define FTW_D FTW_D |
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FTW_DNR, /* Unreadable directory. */ |
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#define FTW_DNR FTW_DNR |
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FTW_NS, /* Unstatable file. */ |
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#define FTW_NS FTW_NS |
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#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED |
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FTW_SL, /* Symbolic link. */ |
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# define FTW_SL FTW_SL |
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#endif |
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#ifdef __USE_XOPEN_EXTENDED |
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/* These flags are only passed from the `nftw' function. */ |
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FTW_DP, /* Directory, all subdirs have been visited. */ |
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# define FTW_DP FTW_DP |
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FTW_SLN /* Symbolic link naming non-existing file. */ |
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# define FTW_SLN FTW_SLN |
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#endif /* extended X/Open */ |
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}; |
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#ifdef __USE_XOPEN_EXTENDED |
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/* Flags for fourth argument of `nftw'. */ |
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enum |
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{ |
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FTW_PHYS = 1, /* Perform physical walk, ignore symlinks. */ |
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# define FTW_PHYS FTW_PHYS |
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FTW_MOUNT = 2, /* Report only files on same file system as the |
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argument. */ |
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# define FTW_MOUNT FTW_MOUNT |
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FTW_CHDIR = 4, /* Change to current directory while processing it. */ |
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# define FTW_CHDIR FTW_CHDIR |
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FTW_DEPTH = 8 /* Report files in directory before directory itself.*/ |
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# define FTW_DEPTH FTW_DEPTH |
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# ifdef __USE_GNU |
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, |
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FTW_ACTIONRETVAL = 16 /* Assume callback to return FTW_* values instead of |
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zero to continue and non-zero to terminate. */ |
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# define FTW_ACTIONRETVAL FTW_ACTIONRETVAL |
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# endif |
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}; |
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#ifdef __USE_GNU |
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/* Return values from callback functions. */ |
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enum |
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{ |
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FTW_CONTINUE = 0, /* Continue with next sibling or for FTW_D with the |
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first child. */ |
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# define FTW_CONTINUE FTW_CONTINUE |
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FTW_STOP = 1, /* Return from `ftw' or `nftw' with FTW_STOP as return |
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value. */ |
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# define FTW_STOP FTW_STOP |
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FTW_SKIP_SUBTREE = 2, /* Only meaningful for FTW_D: Don't walk through the |
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subtree, instead just continue with its next |
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sibling. */ |
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# define FTW_SKIP_SUBTREE FTW_SKIP_SUBTREE |
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FTW_SKIP_SIBLINGS = 3,/* Continue with FTW_DP callback for current directory |
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(if FTW_DEPTH) and then its siblings. */ |
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# define FTW_SKIP_SIBLINGS FTW_SKIP_SIBLINGS |
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}; |
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#endif |
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/* Structure used for fourth argument to callback function for `nftw'. */ |
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struct FTW |
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{ |
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int base; |
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int level; |
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}; |
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#endif /* extended X/Open */ |
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/* Convenient types for callback functions. */ |
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typedef int (*__ftw_func_t) (const char *__filename, |
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const struct stat *__status, int __flag); |
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#ifdef __USE_LARGEFILE64 |
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typedef int (*__ftw64_func_t) (const char *__filename, |
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const struct stat64 *__status, int __flag); |
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#endif |
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#ifdef __USE_XOPEN_EXTENDED |
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typedef int (*__nftw_func_t) (const char *__filename, |
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const struct stat *__status, int __flag, |
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struct FTW *__info); |
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# ifdef __USE_LARGEFILE64 |
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typedef int (*__nftw64_func_t) (const char *__filename, |
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const struct stat64 *__status, |
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int __flag, struct FTW *__info); |
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# endif |
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#endif |
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/* Call a function on every element in a directory tree. |
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This function is a possible cancellation point and therefore not |
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marked with __THROW. */ |
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#ifndef __USE_FILE_OFFSET64 |
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extern int ftw (const char *__dir, __ftw_func_t __func, int __descriptors) |
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__nonnull ((1, 2)); |
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#else |
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# ifdef __REDIRECT |
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extern int __REDIRECT (ftw, (const char *__dir, __ftw_func_t __func, |
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int __descriptors), ftw64) __nonnull ((1, 2)); |
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# else |
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# define ftw ftw64 |
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# endif |
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#endif |
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#ifdef __USE_LARGEFILE64 |
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extern int ftw64 (const char *__dir, __ftw64_func_t __func, |
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int __descriptors) __nonnull ((1, 2)); |
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#endif |
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#ifdef __USE_XOPEN_EXTENDED |
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/* Call a function on every element in a directory tree. FLAG allows |
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to specify the behaviour more detailed. |
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This function is a possible cancellation point and therefore not |
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marked with __THROW. */ |
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# ifndef __USE_FILE_OFFSET64 |
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extern int nftw (const char *__dir, __nftw_func_t __func, int __descriptors, |
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int __flag) __nonnull ((1, 2)); |
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# else |
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# ifdef __REDIRECT |
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extern int __REDIRECT (nftw, (const char *__dir, __nftw_func_t __func, |
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int __descriptors, int __flag), nftw64) |
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__nonnull ((1, 2)); |
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# else |
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# define nftw nftw64 |
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# endif |
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# endif |
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# ifdef __USE_LARGEFILE64 |
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extern int nftw64 (const char *__dir, __nftw64_func_t __func, |
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int __descriptors, int __flag) __nonnull ((1, 2)); |
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# endif |
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#endif |
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__END_DECLS |
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#endif /* ftw.h */
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