Optimize pt_chown.
[glibc.git] / io / ftw.c
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1 /* File tree walker functions.
2 Copyright (C) 1996-2004, 2006, 2007, 2008 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, write to the Free
18 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19 02111-1307 USA. */
21 #ifdef HAVE_CONFIG_H
22 # include <config.h>
23 #endif
25 #if __GNUC__
26 # define alloca __builtin_alloca
27 #else
28 # if HAVE_ALLOCA_H
29 # include <alloca.h>
30 # else
31 # ifdef _AIX
32 # pragma alloca
33 # else
34 char *alloca ();
35 # endif
36 # endif
37 #endif
39 #ifdef _LIBC
40 # include <dirent.h>
41 # define NAMLEN(dirent) _D_EXACT_NAMLEN (dirent)
42 #else
43 # if HAVE_DIRENT_H
44 # include <dirent.h>
45 # define NAMLEN(dirent) strlen ((dirent)->d_name)
46 # else
47 # define dirent direct
48 # define NAMLEN(dirent) (dirent)->d_namlen
49 # if HAVE_SYS_NDIR_H
50 # include <sys/ndir.h>
51 # endif
52 # if HAVE_SYS_DIR_H
53 # include <sys/dir.h>
54 # endif
55 # if HAVE_NDIR_H
56 # include <ndir.h>
57 # endif
58 # endif
59 #endif
61 #include <errno.h>
62 #include <fcntl.h>
63 #include <ftw.h>
64 #include <limits.h>
65 #include <search.h>
66 #include <stdlib.h>
67 #include <string.h>
68 #include <unistd.h>
69 #include <not-cancel.h>
70 #if HAVE_SYS_PARAM_H || defined _LIBC
71 # include <sys/param.h>
72 #endif
73 #ifdef _LIBC
74 # include <include/sys/stat.h>
75 #else
76 # include <sys/stat.h>
77 #endif
79 #if ! _LIBC && !HAVE_DECL_STPCPY && !defined stpcpy
80 char *stpcpy ();
81 #endif
83 #if ! _LIBC && ! defined HAVE_MEMPCPY && ! defined mempcpy
84 /* Be CAREFUL that there are no side effects in N. */
85 # define mempcpy(D, S, N) ((void *) ((char *) memcpy (D, S, N) + (N)))
86 #endif
88 /* #define NDEBUG 1 */
89 #include <assert.h>
91 #ifndef _LIBC
92 # undef __chdir
93 # define __chdir chdir
94 # undef __closedir
95 # define __closedir closedir
96 # undef __fchdir
97 # define __fchdir fchdir
98 # undef __getcwd
99 # define __getcwd(P, N) xgetcwd ()
100 extern char *xgetcwd (void);
101 # undef __mempcpy
102 # define __mempcpy mempcpy
103 # undef __opendir
104 # define __opendir opendir
105 # undef __readdir64
106 # define __readdir64 readdir
107 # undef __stpcpy
108 # define __stpcpy stpcpy
109 # undef __tdestroy
110 # define __tdestroy tdestroy
111 # undef __tfind
112 # define __tfind tfind
113 # undef __tsearch
114 # define __tsearch tsearch
115 # undef internal_function
116 # define internal_function /* empty */
117 # undef dirent64
118 # define dirent64 dirent
119 # undef MAX
120 # define MAX(a, b) ((a) > (b) ? (a) : (b))
121 #endif
123 /* Arrange to make lstat calls go through the wrapper function
124 on systems with an lstat function that does not dereference symlinks
125 that are specified with a trailing slash. */
126 #if ! _LIBC && ! LSTAT_FOLLOWS_SLASHED_SYMLINK
127 int rpl_lstat (const char *, struct stat *);
128 # undef lstat
129 # define lstat(Name, Stat_buf) rpl_lstat(Name, Stat_buf)
130 #endif
132 #ifndef __set_errno
133 # define __set_errno(Val) errno = (Val)
134 #endif
136 /* Support for the LFS API version. */
137 #ifndef FTW_NAME
138 # define FTW_NAME ftw
139 # define NFTW_NAME nftw
140 # define NFTW_OLD_NAME __old_nftw
141 # define NFTW_NEW_NAME __new_nftw
142 # define INO_T ino_t
143 # define STAT stat
144 # ifdef _LIBC
145 # define LXSTAT __lxstat
146 # define XSTAT __xstat
147 # define FXSTATAT __fxstatat
148 # else
149 # define LXSTAT(V,f,sb) lstat (f,sb)
150 # define XSTAT(V,f,sb) stat (f,sb)
151 # define FXSTATAT(V,d,f,sb,m) fstatat (d, f, sb, m)
152 # endif
153 # define FTW_FUNC_T __ftw_func_t
154 # define NFTW_FUNC_T __nftw_func_t
155 #endif
157 /* We define PATH_MAX if the system does not provide a definition.
158 This does not artificially limit any operation. PATH_MAX is simply
159 used as a guesstimate for the expected maximal path length.
160 Buffers will be enlarged if necessary. */
161 #ifndef PATH_MAX
162 # define PATH_MAX 1024
163 #endif
165 struct dir_data
167 DIR *stream;
168 int streamfd;
169 char *content;
172 struct known_object
174 dev_t dev;
175 INO_T ino;
178 struct ftw_data
180 /* Array with pointers to open directory streams. */
181 struct dir_data **dirstreams;
182 size_t actdir;
183 size_t maxdir;
185 /* Buffer containing name of currently processed object. */
186 char *dirbuf;
187 size_t dirbufsize;
189 /* Passed as fourth argument to `nftw' callback. The `base' member
190 tracks the content of the `dirbuf'. */
191 struct FTW ftw;
193 /* Flags passed to `nftw' function. 0 for `ftw'. */
194 int flags;
196 /* Conversion array for flag values. It is the identity mapping for
197 `nftw' calls, otherwise it maps the values to those known by
198 `ftw'. */
199 const int *cvt_arr;
201 /* Callback function. We always use the `nftw' form. */
202 NFTW_FUNC_T func;
204 /* Device of starting point. Needed for FTW_MOUNT. */
205 dev_t dev;
207 /* Data structure for keeping fingerprints of already processed
208 object. This is needed when not using FTW_PHYS. */
209 void *known_objects;
213 /* Internally we use the FTW_* constants used for `nftw'. When invoked
214 as `ftw', map each flag to the subset of values used by `ftw'. */
215 static const int nftw_arr[] =
217 FTW_F, FTW_D, FTW_DNR, FTW_NS, FTW_SL, FTW_DP, FTW_SLN
220 static const int ftw_arr[] =
222 FTW_F, FTW_D, FTW_DNR, FTW_NS, FTW_F, FTW_D, FTW_NS
226 /* Forward declarations of local functions. */
227 static int ftw_dir (struct ftw_data *data, struct STAT *st,
228 struct dir_data *old_dir) internal_function;
231 static int
232 object_compare (const void *p1, const void *p2)
234 /* We don't need a sophisticated and useful comparison. We are only
235 interested in equality. However, we must be careful not to
236 accidentally compare `holes' in the structure. */
237 const struct known_object *kp1 = p1, *kp2 = p2;
238 int cmp1;
239 cmp1 = (kp1->ino > kp2->ino) - (kp1->ino < kp2->ino);
240 if (cmp1 != 0)
241 return cmp1;
242 return (kp1->dev > kp2->dev) - (kp1->dev < kp2->dev);
246 static int
247 add_object (struct ftw_data *data, struct STAT *st)
249 struct known_object *newp = malloc (sizeof (struct known_object));
250 if (newp == NULL)
251 return -1;
252 newp->dev = st->st_dev;
253 newp->ino = st->st_ino;
254 return __tsearch (newp, &data->known_objects, object_compare) ? 0 : -1;
258 static inline int
259 find_object (struct ftw_data *data, struct STAT *st)
261 struct known_object obj;
262 obj.dev = st->st_dev;
263 obj.ino = st->st_ino;
264 return __tfind (&obj, &data->known_objects, object_compare) != NULL;
268 static inline int
269 __attribute ((always_inline))
270 open_dir_stream (int *dfdp, struct ftw_data *data, struct dir_data *dirp)
272 int result = 0;
274 if (data->dirstreams[data->actdir] != NULL)
276 /* Oh, oh. We must close this stream. Get all remaining
277 entries and store them as a list in the `content' member of
278 the `struct dir_data' variable. */
279 size_t bufsize = 1024;
280 char *buf = malloc (bufsize);
282 if (buf == NULL)
283 result = -1;
284 else
286 DIR *st = data->dirstreams[data->actdir]->stream;
287 struct dirent64 *d;
288 size_t actsize = 0;
290 while ((d = __readdir64 (st)) != NULL)
292 size_t this_len = NAMLEN (d);
293 if (actsize + this_len + 2 >= bufsize)
295 char *newp;
296 bufsize += MAX (1024, 2 * this_len);
297 newp = (char *) realloc (buf, bufsize);
298 if (newp == NULL)
300 /* No more memory. */
301 int save_err = errno;
302 free (buf);
303 __set_errno (save_err);
304 return -1;
306 buf = newp;
309 *((char *) __mempcpy (buf + actsize, d->d_name, this_len))
310 = '\0';
311 actsize += this_len + 1;
314 /* Terminate the list with an additional NUL byte. */
315 buf[actsize++] = '\0';
317 /* Shrink the buffer to what we actually need. */
318 data->dirstreams[data->actdir]->content = realloc (buf, actsize);
319 if (data->dirstreams[data->actdir]->content == NULL)
321 int save_err = errno;
322 free (buf);
323 __set_errno (save_err);
324 result = -1;
326 else
328 __closedir (st);
329 data->dirstreams[data->actdir]->stream = NULL;
330 data->dirstreams[data->actdir]->streamfd = -1;
331 data->dirstreams[data->actdir] = NULL;
336 /* Open the new stream. */
337 if (result == 0)
339 assert (data->dirstreams[data->actdir] == NULL);
341 if (dfdp != NULL && *dfdp != -1)
343 int fd = openat64_not_cancel_3 (*dfdp, data->dirbuf + data->ftw.base,
344 O_RDONLY | O_DIRECTORY | O_NDELAY);
345 dirp->stream = NULL;
346 if (fd != -1 && (dirp->stream = __fdopendir (fd)) == NULL)
347 close_not_cancel_no_status (fd);
349 else
351 const char *name;
353 if (data->flags & FTW_CHDIR)
355 name = data->dirbuf + data->ftw.base;
356 if (name[0] == '\0')
357 name = ".";
359 else
360 name = data->dirbuf;
362 dirp->stream = __opendir (name);
365 if (dirp->stream == NULL)
366 result = -1;
367 else
369 dirp->streamfd = dirfd (dirp->stream);
370 dirp->content = NULL;
371 data->dirstreams[data->actdir] = dirp;
373 if (++data->actdir == data->maxdir)
374 data->actdir = 0;
378 return result;
382 static int
383 internal_function
384 process_entry (struct ftw_data *data, struct dir_data *dir, const char *name,
385 size_t namlen, int d_type)
387 struct STAT st;
388 int result = 0;
389 int flag = 0;
390 size_t new_buflen;
392 if (name[0] == '.' && (name[1] == '\0'
393 || (name[1] == '.' && name[2] == '\0')))
394 /* Don't process the "." and ".." entries. */
395 return 0;
397 new_buflen = data->ftw.base + namlen + 2;
398 if (data->dirbufsize < new_buflen)
400 /* Enlarge the buffer. */
401 char *newp;
403 data->dirbufsize = 2 * new_buflen;
404 newp = (char *) realloc (data->dirbuf, data->dirbufsize);
405 if (newp == NULL)
406 return -1;
407 data->dirbuf = newp;
410 *((char *) __mempcpy (data->dirbuf + data->ftw.base, name, namlen)) = '\0';
412 int statres;
413 if (dir->streamfd != -1)
414 statres = FXSTATAT (_STAT_VER, dir->streamfd, name, &st,
415 (data->flags & FTW_PHYS) ? AT_SYMLINK_NOFOLLOW : 0);
416 else
418 if ((data->flags & FTW_CHDIR) == 0)
419 name = data->dirbuf;
421 statres = ((data->flags & FTW_PHYS)
422 ? LXSTAT (_STAT_VER, name, &st)
423 : XSTAT (_STAT_VER, name, &st));
426 if (statres < 0)
428 if (errno != EACCES && errno != ENOENT)
429 result = -1;
430 else if (data->flags & FTW_PHYS)
431 flag = FTW_NS;
432 else if (d_type == DT_LNK)
433 flag = FTW_SLN;
434 else
436 if (dir->streamfd != -1)
437 statres = FXSTATAT (_STAT_VER, dir->streamfd, name, &st,
438 AT_SYMLINK_NOFOLLOW);
439 else
440 statres = LXSTAT (_STAT_VER, name, &st);
441 if (statres == 0 && S_ISLNK (st.st_mode))
442 flag = FTW_SLN;
443 else
444 flag = FTW_NS;
447 else
449 if (S_ISDIR (st.st_mode))
450 flag = FTW_D;
451 else if (S_ISLNK (st.st_mode))
452 flag = FTW_SL;
453 else
454 flag = FTW_F;
457 if (result == 0
458 && (flag == FTW_NS
459 || !(data->flags & FTW_MOUNT) || st.st_dev == data->dev))
461 if (flag == FTW_D)
463 if ((data->flags & FTW_PHYS)
464 || (!find_object (data, &st)
465 /* Remember the object. */
466 && (result = add_object (data, &st)) == 0))
467 result = ftw_dir (data, &st, dir);
469 else
470 result = (*data->func) (data->dirbuf, &st, data->cvt_arr[flag],
471 &data->ftw);
474 if ((data->flags & FTW_ACTIONRETVAL) && result == FTW_SKIP_SUBTREE)
475 result = 0;
477 return result;
481 static int
482 __attribute ((noinline))
483 internal_function
484 ftw_dir (struct ftw_data *data, struct STAT *st, struct dir_data *old_dir)
486 struct dir_data dir;
487 struct dirent64 *d;
488 int previous_base = data->ftw.base;
489 int result;
490 char *startp;
492 /* Open the stream for this directory. This might require that
493 another stream has to be closed. */
494 result = open_dir_stream (old_dir == NULL ? NULL : &old_dir->streamfd,
495 data, &dir);
496 if (result != 0)
498 if (errno == EACCES)
499 /* We cannot read the directory. Signal this with a special flag. */
500 result = (*data->func) (data->dirbuf, st, FTW_DNR, &data->ftw);
502 return result;
505 /* First, report the directory (if not depth-first). */
506 if (!(data->flags & FTW_DEPTH))
508 result = (*data->func) (data->dirbuf, st, FTW_D, &data->ftw);
509 if (result != 0)
511 int save_err;
512 fail:
513 save_err = errno;
514 __closedir (dir.stream);
515 dir.streamfd = -1;
516 __set_errno (save_err);
518 if (data->actdir-- == 0)
519 data->actdir = data->maxdir - 1;
520 data->dirstreams[data->actdir] = NULL;
521 return result;
525 /* If necessary, change to this directory. */
526 if (data->flags & FTW_CHDIR)
528 if (__fchdir (dirfd (dir.stream)) < 0)
530 result = -1;
531 goto fail;
535 /* Next, update the `struct FTW' information. */
536 ++data->ftw.level;
537 startp = __rawmemchr (data->dirbuf, '\0');
538 /* There always must be a directory name. */
539 assert (startp != data->dirbuf);
540 if (startp[-1] != '/')
541 *startp++ = '/';
542 data->ftw.base = startp - data->dirbuf;
544 while (dir.stream != NULL && (d = __readdir64 (dir.stream)) != NULL)
546 result = process_entry (data, &dir, d->d_name, NAMLEN (d), d->d_type);
547 if (result != 0)
548 break;
551 if (dir.stream != NULL)
553 /* The stream is still open. I.e., we did not need more
554 descriptors. Simply close the stream now. */
555 int save_err = errno;
557 assert (dir.content == NULL);
559 __closedir (dir.stream);
560 dir.streamfd = -1;
561 __set_errno (save_err);
563 if (data->actdir-- == 0)
564 data->actdir = data->maxdir - 1;
565 data->dirstreams[data->actdir] = NULL;
567 else
569 int save_err;
570 char *runp = dir.content;
572 while (result == 0 && *runp != '\0')
574 char *endp = strchr (runp, '\0');
576 // XXX Should store the d_type values as well?!
577 result = process_entry (data, &dir, runp, endp - runp, DT_UNKNOWN);
579 runp = endp + 1;
582 save_err = errno;
583 free (dir.content);
584 __set_errno (save_err);
587 if ((data->flags & FTW_ACTIONRETVAL) && result == FTW_SKIP_SIBLINGS)
588 result = 0;
590 /* Prepare the return, revert the `struct FTW' information. */
591 data->dirbuf[data->ftw.base - 1] = '\0';
592 --data->ftw.level;
593 data->ftw.base = previous_base;
595 /* Finally, if we process depth-first report the directory. */
596 if (result == 0 && (data->flags & FTW_DEPTH))
597 result = (*data->func) (data->dirbuf, st, FTW_DP, &data->ftw);
599 if (old_dir
600 && (data->flags & FTW_CHDIR)
601 && (result == 0
602 || ((data->flags & FTW_ACTIONRETVAL)
603 && (result != -1 && result != FTW_STOP))))
605 /* Change back to the parent directory. */
606 int done = 0;
607 if (old_dir->stream != NULL)
608 if (__fchdir (dirfd (old_dir->stream)) == 0)
609 done = 1;
611 if (!done)
613 if (data->ftw.base == 1)
615 if (__chdir ("/") < 0)
616 result = -1;
618 else
619 if (__chdir ("..") < 0)
620 result = -1;
624 return result;
628 static int
629 __attribute ((noinline))
630 internal_function
631 ftw_startup (const char *dir, int is_nftw, void *func, int descriptors,
632 int flags)
634 struct ftw_data data;
635 struct STAT st;
636 int result = 0;
637 int save_err;
638 int cwdfd = -1;
639 char *cwd = NULL;
640 char *cp;
642 /* First make sure the parameters are reasonable. */
643 if (dir[0] == '\0')
645 __set_errno (ENOENT);
646 return -1;
649 data.maxdir = descriptors < 1 ? 1 : descriptors;
650 data.actdir = 0;
651 data.dirstreams = (struct dir_data **) alloca (data.maxdir
652 * sizeof (struct dir_data *));
653 memset (data.dirstreams, '\0', data.maxdir * sizeof (struct dir_data *));
655 /* PATH_MAX is always defined when we get here. */
656 data.dirbufsize = MAX (2 * strlen (dir), PATH_MAX);
657 data.dirbuf = (char *) malloc (data.dirbufsize);
658 if (data.dirbuf == NULL)
659 return -1;
660 cp = __stpcpy (data.dirbuf, dir);
661 /* Strip trailing slashes. */
662 while (cp > data.dirbuf + 1 && cp[-1] == '/')
663 --cp;
664 *cp = '\0';
666 data.ftw.level = 0;
668 /* Find basename. */
669 while (cp > data.dirbuf && cp[-1] != '/')
670 --cp;
671 data.ftw.base = cp - data.dirbuf;
673 data.flags = flags;
675 /* This assignment might seem to be strange but it is what we want.
676 The trick is that the first three arguments to the `ftw' and
677 `nftw' callback functions are equal. Therefore we can call in
678 every case the callback using the format of the `nftw' version
679 and get the correct result since the stack layout for a function
680 call in C allows this. */
681 data.func = (NFTW_FUNC_T) func;
683 /* Since we internally use the complete set of FTW_* values we need
684 to reduce the value range before calling a `ftw' callback. */
685 data.cvt_arr = is_nftw ? nftw_arr : ftw_arr;
687 /* No object known so far. */
688 data.known_objects = NULL;
690 /* Now go to the directory containing the initial file/directory. */
691 if (flags & FTW_CHDIR)
693 /* We have to be able to go back to the current working
694 directory. The best way to do this is to use a file
695 descriptor. */
696 cwdfd = __open (".", O_RDONLY | O_DIRECTORY);
697 if (cwdfd == -1)
699 /* Try getting the directory name. This can be needed if
700 the current directory is executable but not readable. */
701 if (errno == EACCES)
702 /* GNU extension ahead. */
703 cwd = __getcwd (NULL, 0);
705 if (cwd == NULL)
706 goto out_fail;
708 else if (data.maxdir > 1)
709 /* Account for the file descriptor we use here. */
710 --data.maxdir;
712 if (data.ftw.base > 0)
714 /* Change to the directory the file is in. In data.dirbuf
715 we have a writable copy of the file name. Just NUL
716 terminate it for now and change the directory. */
717 if (data.ftw.base == 1)
718 /* I.e., the file is in the root directory. */
719 result = __chdir ("/");
720 else
722 char ch = data.dirbuf[data.ftw.base - 1];
723 data.dirbuf[data.ftw.base - 1] = '\0';
724 result = __chdir (data.dirbuf);
725 data.dirbuf[data.ftw.base - 1] = ch;
730 /* Get stat info for start directory. */
731 if (result == 0)
733 const char *name;
735 if (data.flags & FTW_CHDIR)
737 name = data.dirbuf + data.ftw.base;
738 if (name[0] == '\0')
739 name = ".";
741 else
742 name = data.dirbuf;
744 if (((flags & FTW_PHYS)
745 ? LXSTAT (_STAT_VER, name, &st)
746 : XSTAT (_STAT_VER, name, &st)) < 0)
748 if (!(flags & FTW_PHYS)
749 && errno == ENOENT
750 && LXSTAT (_STAT_VER, name, &st) == 0
751 && S_ISLNK (st.st_mode))
752 result = (*data.func) (data.dirbuf, &st, data.cvt_arr[FTW_SLN],
753 &data.ftw);
754 else
755 /* No need to call the callback since we cannot say anything
756 about the object. */
757 result = -1;
759 else
761 if (S_ISDIR (st.st_mode))
763 /* Remember the device of the initial directory in case
764 FTW_MOUNT is given. */
765 data.dev = st.st_dev;
767 /* We know this directory now. */
768 if (!(flags & FTW_PHYS))
769 result = add_object (&data, &st);
771 if (result == 0)
772 result = ftw_dir (&data, &st, NULL);
774 else
776 int flag = S_ISLNK (st.st_mode) ? FTW_SL : FTW_F;
778 result = (*data.func) (data.dirbuf, &st, data.cvt_arr[flag],
779 &data.ftw);
783 if ((flags & FTW_ACTIONRETVAL)
784 && (result == FTW_SKIP_SUBTREE || result == FTW_SKIP_SIBLINGS))
785 result = 0;
788 /* Return to the start directory (if necessary). */
789 if (cwdfd != -1)
791 int save_err = errno;
792 __fchdir (cwdfd);
793 __set_errno (save_err);
795 else if (cwd != NULL)
797 int save_err = errno;
798 __chdir (cwd);
799 free (cwd);
800 __set_errno (save_err);
803 /* Free all memory. */
804 out_fail:
805 save_err = errno;
806 __tdestroy (data.known_objects, free);
807 free (data.dirbuf);
808 __set_errno (save_err);
810 return result;
815 /* Entry points. */
818 FTW_NAME (path, func, descriptors)
819 const char *path;
820 FTW_FUNC_T func;
821 int descriptors;
823 return ftw_startup (path, 0, func, descriptors, 0);
826 #ifndef _LIBC
828 NFTW_NAME (path, func, descriptors, flags)
829 const char *path;
830 NFTW_FUNC_T func;
831 int descriptors;
832 int flags;
834 return ftw_startup (path, 1, func, descriptors, flags);
836 #else
838 # include <shlib-compat.h>
840 int NFTW_NEW_NAME (const char *, NFTW_FUNC_T, int, int);
843 NFTW_NEW_NAME (path, func, descriptors, flags)
844 const char *path;
845 NFTW_FUNC_T func;
846 int descriptors;
847 int flags;
849 if (flags
850 & ~(FTW_PHYS | FTW_MOUNT | FTW_CHDIR | FTW_DEPTH | FTW_ACTIONRETVAL))
852 __set_errno (EINVAL);
853 return -1;
855 return ftw_startup (path, 1, func, descriptors, flags);
858 versioned_symbol (libc, NFTW_NEW_NAME, NFTW_NAME, GLIBC_2_3_3);
860 # if SHLIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_3_3)
862 /* Older nftw* version just ignored all unknown flags. */
864 int NFTW_OLD_NAME (const char *, NFTW_FUNC_T, int, int);
867 attribute_compat_text_section
868 NFTW_OLD_NAME (path, func, descriptors, flags)
869 const char *path;
870 NFTW_FUNC_T func;
871 int descriptors;
872 int flags;
874 flags &= (FTW_PHYS | FTW_MOUNT | FTW_CHDIR | FTW_DEPTH);
875 return ftw_startup (path, 1, func, descriptors, flags);
878 compat_symbol (libc, NFTW_OLD_NAME, NFTW_NAME, GLIBC_2_1);
879 # endif
880 #endif