/* File tree walker functions.
- Copyright (C) 1996-2001, 2002, 2003 Free Software Foundation, Inc.
+ Copyright (C) 1996-2003, 2004 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
-/* used by D_EXACT_NAMLEN */
-#define strlen __strlen
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
-#define mempcpy __mempcpy
-#define stpcpy __stpcpy
+#define _GNU_SOURCE
+#define _XOPEN_SOURCE 500
+#include <features.h>
+#ifdef __UCLIBC__
+#undef _LIBC
+#define HAVE_DIRENT_H 1
+#define HAVE_SYS_PARAM_H 1
+#define HAVE_DECL_STPCPY 1
+#define HAVE_MEMPCPY 1
+#define dirfd __dirfd
#define tsearch __tsearch
-#define tdestroy __tdestroy
#define tfind __tfind
-#define fchdir __fchdir
-#define chdir __chdir
-#define dirfd __dirfd
+#define tdestroy __tdestroy
#define getcwd __getcwd
+#define chdir __chdir
+#define fchdir __fchdir
+#define mempcpy __mempcpy
#define opendir __opendir
#define closedir __closedir
-
-#define _GNU_SOURCE
-#include <features.h>
-
-#if defined (__UCLIBC_HAS_LFS__) && defined L_ftw64
-#ifndef L_ftw
-#define L_ftw
+#define stpcpy __stpcpy
#endif
-/* If Large file support is enabled, transparently remap
- * things to use the 64-bit interfaces */
-#if defined _FILE_OFFSET_BITS && _FILE_OFFSET_BITS != 64
-#undef _FILE_OFFSET_BITS
-#define _FILE_OFFSET_BITS 64
-#endif
-#ifndef __USE_LARGEFILE64
-# define __USE_LARGEFILE64 1
-#endif
-#ifndef __USE_FILE_OFFSET64
-# define __USE_FILE_OFFSET64 1
+#if __GNUC__
+# define alloca __builtin_alloca
+#else
+# if HAVE_ALLOCA_H
+# include <alloca.h>
+# else
+# ifdef _AIX
+ # pragma alloca
+# else
+char *alloca ();
+# endif
+# endif
#endif
-#define FTW_NAME ftw64
-#define NFTW_NAME nftw64
-#define INO_T ino64_t
-#define STAT stat64
-#define LSTAT __lstat64
-#define XSTAT __stat64
-#define FTW_FUNC_T __ftw64_func_t
-#define NFTW_FUNC_T __nftw64_func_t
-#define __readdir __readdir64
+#if defined _LIBC
+# include <dirent.h>
+# define NAMLEN(dirent) _D_EXACT_NAMLEN (dirent)
#else
-#undef __stat
-#undef __lstat
-#define FTW_NAME ftw
-#define NFTW_NAME nftw
-#define INO_T ino_t
-#define STAT stat
-#define LSTAT __lstat
-#define XSTAT __stat
-#define FTW_FUNC_T __ftw_func_t
-#define NFTW_FUNC_T __nftw_func_t
+# if HAVE_DIRENT_H
+# include <dirent.h>
+# define NAMLEN(dirent) __strlen ((dirent)->d_name)
+# else
+# define dirent direct
+# define NAMLEN(dirent) (dirent)->d_namlen
+# if HAVE_SYS_NDIR_H
+# include <sys/ndir.h>
+# endif
+# if HAVE_SYS_DIR_H
+# include <sys/dir.h>
+# endif
+# if HAVE_NDIR_H
+# include <ndir.h>
+# endif
+# endif
#endif
-#ifdef L_ftw
-
-#include <alloca.h>
#include <errno.h>
#include <ftw.h>
#include <limits.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
-#include <sys/param.h>
-#include <sys/stat.h>
+#if HAVE_SYS_PARAM_H || defined _LIBC
+# include <sys/param.h>
+#endif
+#ifdef _LIBC
+# include <include/sys/stat.h>
+#else
+# include <sys/stat.h>
+#endif
+
+#if ! _LIBC && !HAVE_DECL_STPCPY && !defined stpcpy
+char *stpcpy ();
+#endif
+
+#if ! _LIBC && ! defined HAVE_MEMPCPY && ! defined mempcpy
+/* Be CAREFUL that there are no side effects in N. */
+# define mempcpy(D, S, N) ((void *) ((char *) memcpy (D, S, N) + (N)))
+#endif
+
+/* #define NDEBUG 1 */
#include <assert.h>
-#include <dirent.h>
-#if 1 /*ndef L_ftw64*/
+#if !defined _LIBC && !defined __UCLIBC__
+# undef __chdir
+# define __chdir chdir
+# undef __closedir
+# define __closedir closedir
+# undef __fchdir
+# define __fchdir fchdir
+# ifndef __UCLIBC__
+# undef __getcwd
+# define __getcwd(P, N) xgetcwd ()
+extern char *xgetcwd (void);
+# endif
+# undef __mempcpy
+# define __mempcpy mempcpy
+# undef __opendir
+# define __opendir opendir
+# undef __readdir64
+# define __readdir64 readdir
+# undef __stpcpy
+# define __stpcpy stpcpy
+# undef __tdestroy
+# define __tdestroy tdestroy
+# undef __tfind
+# define __tfind tfind
+# undef __tsearch
+# define __tsearch tsearch
+# undef internal_function
+# define internal_function /* empty */
+# undef dirent64
+# define dirent64 dirent
+# undef MAX
+# define MAX(a, b) ((a) > (b) ? (a) : (b))
+#endif
+
+/* Arrange to make lstat calls go through the wrapper function
+ on systems with an lstat function that does not dereference symlinks
+ that are specified with a trailing slash. */
+#if ! _LIBC && ! LSTAT_FOLLOWS_SLASHED_SYMLINK && !defined __UCLIBC__
+int rpl_lstat (const char *, struct stat *);
+# undef lstat
+# define lstat(Name, Stat_buf) rpl_lstat(Name, Stat_buf)
+#endif
+
+#ifndef __set_errno
+# define __set_errno(Val) errno = (Val)
+#endif
+
+/* Support for the LFS API version. */
+#ifndef FTW_NAME
+# define FTW_NAME ftw
+# define NFTW_NAME nftw
+# define NFTW_OLD_NAME __old_nftw
+# define NFTW_NEW_NAME __new_nftw
+# define INO_T ino_t
+# define STAT stat
+# ifdef _LIBC
+# define LXSTAT __lxstat
+# define XSTAT __xstat
+# else
+# ifdef __UCLIBC__
+# define LXSTAT(V,f,sb) __lstat(f,sb)
+# define XSTAT(V,f,sb) __stat(f,sb)
+# define __readdir64 __readdir
+# define dirent64 dirent
+# else
+# define LXSTAT(V,f,sb) lstat (f,sb)
+# define XSTAT(V,f,sb) stat (f,sb)
+# endif
+# endif
+# define FTW_FUNC_T __ftw_func_t
+# define NFTW_FUNC_T __nftw_func_t
extern struct dirent *__readdir (DIR *__dirp) __nonnull ((1)) attribute_hidden;
-#else
+# else
extern struct dirent64 *__readdir64 (DIR *__dirp) __nonnull ((1)) attribute_hidden;
#endif
struct dir_data
{
- DIR *stream;
- char *content;
+ DIR *stream;
+ char *content;
};
struct known_object
{
- dev_t dev;
- INO_T ino;
+ dev_t dev;
+ INO_T ino;
};
struct ftw_data
{
- /* Array with pointers to open directory streams. */
- struct dir_data **dirstreams;
- size_t actdir;
- size_t maxdir;
+ /* Array with pointers to open directory streams. */
+ struct dir_data **dirstreams;
+ size_t actdir;
+ size_t maxdir;
- /* Buffer containing name of currently processed object. */
- char *dirbuf;
- size_t dirbufsize;
+ /* Buffer containing name of currently processed object. */
+ char *dirbuf;
+ size_t dirbufsize;
- /* Passed as fourth argument to `nftw' callback. The `base' member
- tracks the content of the `dirbuf'. */
- struct FTW ftw;
+ /* Passed as fourth argument to `nftw' callback. The `base' member
+ tracks the content of the `dirbuf'. */
+ struct FTW ftw;
- /* Flags passed to `nftw' function. 0 for `ftw'. */
- int flags;
+ /* Flags passed to `nftw' function. 0 for `ftw'. */
+ int flags;
- /* Conversion array for flag values. It is the identity mapping for
- `nftw' calls, otherwise it maps the values to those known by
- `ftw'. */
- const int *cvt_arr;
+ /* Conversion array for flag values. It is the identity mapping for
+ `nftw' calls, otherwise it maps the values to those known by
+ `ftw'. */
+ const int *cvt_arr;
- /* Callback function. We always use the `nftw' form. */
- NFTW_FUNC_T func;
+ /* Callback function. We always use the `nftw' form. */
+ NFTW_FUNC_T func;
- /* Device of starting point. Needed for FTW_MOUNT. */
- dev_t dev;
+ /* Device of starting point. Needed for FTW_MOUNT. */
+ dev_t dev;
- /* Data structure for keeping fingerprints of already processed
- object. This is needed when not using FTW_PHYS. */
- void *known_objects;
+ /* Data structure for keeping fingerprints of already processed
+ object. This is needed when not using FTW_PHYS. */
+ void *known_objects;
};
as `ftw', map each flag to the subset of values used by `ftw'. */
static const int nftw_arr[] =
{
- FTW_F, FTW_D, FTW_DNR, FTW_NS, FTW_SL, FTW_DP, FTW_SLN
+ FTW_F, FTW_D, FTW_DNR, FTW_NS, FTW_SL, FTW_DP, FTW_SLN
};
static const int ftw_arr[] =
{
- FTW_F, FTW_D, FTW_DNR, FTW_NS, FTW_F, FTW_D, FTW_NS
+ FTW_F, FTW_D, FTW_DNR, FTW_NS, FTW_F, FTW_D, FTW_NS
};
+
/* Forward declarations of local functions. */
-static int ftw_dir (struct ftw_data *data, struct STAT *st) internal_function;
+static int ftw_dir (struct ftw_data *data, struct STAT *st,
+ struct dir_data *old_dir) internal_function;
static int
object_compare (const void *p1, const void *p2)
{
- /* We don't need a sophisticated and useful comparison. We are only
- interested in equality. However, we must be careful not to
- accidentally compare `holes' in the structure. */
- const struct known_object *kp1 = p1, *kp2 = p2;
- int cmp1;
- cmp1 = (kp1->ino > kp2->ino) - (kp1->ino < kp2->ino);
- if (cmp1 != 0)
- return cmp1;
- return (kp1->dev > kp2->dev) - (kp1->dev < kp2->dev);
+ /* We don't need a sophisticated and useful comparison. We are only
+ interested in equality. However, we must be careful not to
+ accidentally compare `holes' in the structure. */
+ const struct known_object *kp1 = p1, *kp2 = p2;
+ int cmp1;
+ cmp1 = (kp1->ino > kp2->ino) - (kp1->ino < kp2->ino);
+ if (cmp1 != 0)
+ return cmp1;
+ return (kp1->dev > kp2->dev) - (kp1->dev < kp2->dev);
}
static inline int
add_object (struct ftw_data *data, struct STAT *st)
{
- struct known_object *newp = malloc (sizeof (struct known_object));
- if (newp == NULL)
- return -1;
- newp->dev = st->st_dev;
- newp->ino = st->st_ino;
- return tsearch (newp, &data->known_objects, object_compare) ? 0 : -1;
+ struct known_object *newp = malloc (sizeof (struct known_object));
+ if (newp == NULL)
+ return -1;
+ newp->dev = st->st_dev;
+ newp->ino = st->st_ino;
+ return __tsearch (newp, &data->known_objects, object_compare) ? 0 : -1;
}
static inline int
find_object (struct ftw_data *data, struct STAT *st)
{
- struct known_object obj;
- obj.dev = st->st_dev;
- obj.ino = st->st_ino;
- return tfind (&obj, &data->known_objects, object_compare) != NULL;
+ struct known_object obj;
+ obj.dev = st->st_dev;
+ obj.ino = st->st_ino;
+ return __tfind (&obj, &data->known_objects, object_compare) != NULL;
}
__attribute ((always_inline))
open_dir_stream (struct ftw_data *data, struct dir_data *dirp)
{
- int result = 0;
+ int result = 0;
- if (data->dirstreams[data->actdir] != NULL)
+ if (data->dirstreams[data->actdir] != NULL)
{
- /* Oh, oh. We must close this stream. Get all remaining
- entries and store them as a list in the `content' member of
- the `struct dir_data' variable. */
- size_t bufsize = 1024;
- char *buf = malloc (bufsize);
-
- if (buf == NULL)
- result = -1;
- else
+ /* Oh, oh. We must close this stream. Get all remaining
+ entries and store them as a list in the `content' member of
+ the `struct dir_data' variable. */
+ size_t bufsize = 1024;
+ char *buf = malloc (bufsize);
+
+ if (buf == NULL)
+ result = -1;
+ else
{
- DIR *st = data->dirstreams[data->actdir]->stream;
- struct dirent *d;
- size_t actsize = 0;
+ DIR *st = data->dirstreams[data->actdir]->stream;
+ struct dirent64 *d;
+ size_t actsize = 0;
- while ((d = __readdir (st)) != NULL)
+ while ((d = __readdir64 (st)) != NULL)
{
- size_t this_len = _D_EXACT_NAMLEN (d);
- if (actsize + this_len + 2 >= bufsize)
+ size_t this_len = NAMLEN (d);
+ if (actsize + this_len + 2 >= bufsize)
{
- char *newp;
- bufsize += MAX (1024, 2 * this_len);
- newp = (char *) realloc (buf, bufsize);
- if (newp == NULL)
+ char *newp;
+ bufsize += MAX (1024, 2 * this_len);
+ newp = (char *) realloc (buf, bufsize);
+ if (newp == NULL)
{
- /* No more memory. */
- int save_err = errno;
- free (buf);
- __set_errno (save_err);
- result = -1;
- break;
+ /* No more memory. */
+ int save_err = errno;
+ free (buf);
+ __set_errno (save_err);
+ result = -1;
+ break;
}
- buf = newp;
+ buf = newp;
}
- *((char *) mempcpy (buf + actsize, d->d_name, this_len))
- = '\0';
- actsize += this_len + 1;
+ *((char *) __mempcpy (buf + actsize, d->d_name, this_len))
+ = '\0';
+ actsize += this_len + 1;
}
- /* Terminate the list with an additional NUL byte. */
- buf[actsize++] = '\0';
+ /* Terminate the list with an additional NUL byte. */
+ buf[actsize++] = '\0';
- /* Shrink the buffer to what we actually need. */
- data->dirstreams[data->actdir]->content = realloc (buf, actsize);
- if (data->dirstreams[data->actdir]->content == NULL)
+ /* Shrink the buffer to what we actually need. */
+ data->dirstreams[data->actdir]->content = realloc (buf, actsize);
+ if (data->dirstreams[data->actdir]->content == NULL)
{
- int save_err = errno;
- free (buf);
- __set_errno (save_err);
- result = -1;
+ int save_err = errno;
+ free (buf);
+ __set_errno (save_err);
+ result = -1;
}
- else
+ else
{
- closedir (st);
- data->dirstreams[data->actdir]->stream = NULL;
- data->dirstreams[data->actdir] = NULL;
+ __closedir (st);
+ data->dirstreams[data->actdir]->stream = NULL;
+ data->dirstreams[data->actdir] = NULL;
}
}
}
- /* Open the new stream. */
- if (result == 0)
+ /* Open the new stream. */
+ if (result == 0)
{
- const char *name = ((data->flags & FTW_CHDIR)
- ? data->dirbuf + data->ftw.base: data->dirbuf);
- assert (data->dirstreams[data->actdir] == NULL);
-
- dirp->stream = opendir (name);
- if (dirp->stream == NULL)
- result = -1;
- else
+ const char *name = ((data->flags & FTW_CHDIR)
+ ? data->dirbuf + data->ftw.base: data->dirbuf);
+ assert (data->dirstreams[data->actdir] == NULL);
+
+ dirp->stream = __opendir (name);
+ if (dirp->stream == NULL)
+ result = -1;
+ else
{
- dirp->content = NULL;
- data->dirstreams[data->actdir] = dirp;
+ dirp->content = NULL;
+ data->dirstreams[data->actdir] = dirp;
- if (++data->actdir == data->maxdir)
- data->actdir = 0;
+ if (++data->actdir == data->maxdir)
+ data->actdir = 0;
}
}
- return result;
+ return result;
}
static int
internal_function
-process_entry (struct ftw_data *data, struct dir_data *dir, const char *name, size_t namlen)
+process_entry (struct ftw_data *data, struct dir_data *dir, const char *name,
+ size_t namlen)
{
- struct STAT st;
- int result = 0;
- int flag = 0;
- size_t new_buflen;
-
- if (name[0] == '.' && (name[1] == '\0'
- || (name[1] == '.' && name[2] == '\0')))
- /* Don't process the "." and ".." entries. */
- return 0;
-
- new_buflen = data->ftw.base + namlen + 2;
- if (data->dirbufsize < new_buflen)
+ struct STAT st;
+ int result = 0;
+ int flag = 0;
+ size_t new_buflen;
+
+ if (name[0] == '.' && (name[1] == '\0'
+ || (name[1] == '.' && name[2] == '\0')))
+ /* Don't process the "." and ".." entries. */
+ return 0;
+
+ new_buflen = data->ftw.base + namlen + 2;
+ if (data->dirbufsize < new_buflen)
{
- /* Enlarge the buffer. */
- char *newp;
-
- data->dirbufsize = 2 * new_buflen;
- newp = (char *) realloc (data->dirbuf, data->dirbufsize);
- if (newp == NULL)
- return -1;
- data->dirbuf = newp;
+ /* Enlarge the buffer. */
+ char *newp;
+
+ data->dirbufsize = 2 * new_buflen;
+ newp = (char *) realloc (data->dirbuf, data->dirbufsize);
+ if (newp == NULL)
+ return -1;
+ data->dirbuf = newp;
}
- *((char *) mempcpy (data->dirbuf + data->ftw.base, name, namlen)) = '\0';
+ *((char *) __mempcpy (data->dirbuf + data->ftw.base, name, namlen)) = '\0';
- if ((data->flags & FTW_CHDIR) == 0)
- name = data->dirbuf;
+ if ((data->flags & FTW_CHDIR) == 0)
+ name = data->dirbuf;
- if (((data->flags & FTW_PHYS)
- ? LSTAT (name, &st)
- : XSTAT (name, &st)) < 0)
+ if (((data->flags & FTW_PHYS)
+ ? LXSTAT (_STAT_VER, name, &st)
+ : XSTAT (_STAT_VER, name, &st)) < 0)
{
- if (errno != EACCES && errno != ENOENT)
- result = -1;
- else if (!(data->flags & FTW_PHYS)
- && LSTAT (name, &st) == 0
- && S_ISLNK (st.st_mode))
- flag = FTW_SLN;
- else
- flag = FTW_NS;
+ if (errno != EACCES && errno != ENOENT)
+ result = -1;
+ else if (!(data->flags & FTW_PHYS)
+ && LXSTAT (_STAT_VER, name, &st) == 0
+ && S_ISLNK (st.st_mode))
+ flag = FTW_SLN;
+ else
+ flag = FTW_NS;
}
- else
+ else
{
- if (S_ISDIR (st.st_mode))
- flag = FTW_D;
- else if (S_ISLNK (st.st_mode))
- flag = FTW_SL;
- else
- flag = FTW_F;
+ if (S_ISDIR (st.st_mode))
+ flag = FTW_D;
+ else if (S_ISLNK (st.st_mode))
+ flag = FTW_SL;
+ else
+ flag = FTW_F;
}
- if (result == 0
- && (flag == FTW_NS
- || !(data->flags & FTW_MOUNT) || st.st_dev == data->dev))
+ if (result == 0
+ && (flag == FTW_NS
+ || !(data->flags & FTW_MOUNT) || st.st_dev == data->dev))
{
- if (flag == FTW_D)
+ if (flag == FTW_D)
{
- if ((data->flags & FTW_PHYS)
- || (!find_object (data, &st)
- /* Remember the object. */
- && (result = add_object (data, &st)) == 0))
- {
- result = ftw_dir (data, &st);
-
- if (result == 0 && (data->flags & FTW_CHDIR))
- {
- /* Change back to the parent directory. */
- int done = 0;
- if (dir->stream != NULL)
- if (fchdir (dirfd (dir->stream)) == 0)
- done = 1;
-
- if (!done)
- {
- if (data->ftw.base == 1)
- {
- if (chdir ("/") < 0)
- result = -1;
- }
- else
- if (chdir ("..") < 0)
- result = -1;
- }
- }
- }
+ if ((data->flags & FTW_PHYS)
+ || (!find_object (data, &st)
+ /* Remember the object. */
+ && (result = add_object (data, &st)) == 0))
+ result = ftw_dir (data, &st, dir);
}
- else
- result = (*data->func) (data->dirbuf, &st, data->cvt_arr[flag],
- &data->ftw);
+ else
+ result = (*data->func) (data->dirbuf, &st, data->cvt_arr[flag],
+ &data->ftw);
}
- return result;
+ if ((data->flags & FTW_ACTIONRETVAL) && result == FTW_SKIP_SUBTREE)
+ result = 0;
+
+ return result;
}
+
static int
+__attribute ((noinline))
internal_function
-ftw_dir (struct ftw_data *data, struct STAT *st)
+ftw_dir (struct ftw_data *data, struct STAT *st, struct dir_data *old_dir)
{
- struct dir_data dir;
- struct dirent *d;
- int previous_base = data->ftw.base;
- int result;
- char *startp;
-
- /* Open the stream for this directory. This might require that
- another stream has to be closed. */
- result = open_dir_stream (data, &dir);
- if (result != 0)
+ struct dir_data dir;
+ struct dirent64 *d;
+ int previous_base = data->ftw.base;
+ int result;
+ char *startp;
+
+ /* Open the stream for this directory. This might require that
+ another stream has to be closed. */
+ result = open_dir_stream (data, &dir);
+ if (result != 0)
{
- if (errno == EACCES)
- /* We cannot read the directory. Signal this with a special flag. */
- result = (*data->func) (data->dirbuf, st, FTW_DNR, &data->ftw);
+ if (errno == EACCES)
+ /* We cannot read the directory. Signal this with a special flag. */
+ result = (*data->func) (data->dirbuf, st, FTW_DNR, &data->ftw);
- return result;
+ return result;
}
- /* First, report the directory (if not depth-first). */
- if (!(data->flags & FTW_DEPTH))
+ /* First, report the directory (if not depth-first). */
+ if (!(data->flags & FTW_DEPTH))
{
- result = (*data->func) (data->dirbuf, st, FTW_D, &data->ftw);
- if (result != 0)
- return result;
+ result = (*data->func) (data->dirbuf, st, FTW_D, &data->ftw);
+ if (result != 0)
+ {
+ int save_err;
+fail:
+ save_err = errno;
+ __closedir (dir.stream);
+ __set_errno (save_err);
+
+ if (data->actdir-- == 0)
+ data->actdir = data->maxdir - 1;
+ data->dirstreams[data->actdir] = NULL;
+ return result;
+ }
}
- /* If necessary, change to this directory. */
- if (data->flags & FTW_CHDIR)
+ /* If necessary, change to this directory. */
+ if (data->flags & FTW_CHDIR)
{
- if (fchdir (dirfd (dir.stream)) < 0)
+ if (__fchdir (dirfd (dir.stream)) < 0)
{
- int save_err = errno;
- closedir (dir.stream);
- __set_errno (save_err);
-
- if (data->actdir-- == 0)
- data->actdir = data->maxdir - 1;
- data->dirstreams[data->actdir] = NULL;
-
- return -1;
+ result = -1;
+ goto fail;
}
}
- /* Next, update the `struct FTW' information. */
- ++data->ftw.level;
- startp = __strchr (data->dirbuf, '\0');
- /* There always must be a directory name. */
- assert (startp != data->dirbuf);
- if (startp[-1] != '/')
- *startp++ = '/';
- data->ftw.base = startp - data->dirbuf;
+ /* Next, update the `struct FTW' information. */
+ ++data->ftw.level;
+ startp = __strchr (data->dirbuf, '\0');
+ /* There always must be a directory name. */
+ assert (startp != data->dirbuf);
+ if (startp[-1] != '/')
+ *startp++ = '/';
+ data->ftw.base = startp - data->dirbuf;
- while (dir.stream != NULL && (d = __readdir (dir.stream)) != NULL)
+ while (dir.stream != NULL && (d = __readdir64 (dir.stream)) != NULL)
{
- result = process_entry (data, &dir, d->d_name, _D_EXACT_NAMLEN (d));
- if (result != 0)
- break;
+ result = process_entry (data, &dir, d->d_name, NAMLEN (d));
+ if (result != 0)
+ break;
}
- if (dir.stream != NULL)
+ if (dir.stream != NULL)
{
- /* The stream is still open. I.e., we did not need more
- descriptors. Simply close the stream now. */
- int save_err = errno;
+ /* The stream is still open. I.e., we did not need more
+ descriptors. Simply close the stream now. */
+ int save_err = errno;
- assert (dir.content == NULL);
+ assert (dir.content == NULL);
- closedir (dir.stream);
- __set_errno (save_err);
+ __closedir (dir.stream);
+ __set_errno (save_err);
- if (data->actdir-- == 0)
- data->actdir = data->maxdir - 1;
- data->dirstreams[data->actdir] = NULL;
+ if (data->actdir-- == 0)
+ data->actdir = data->maxdir - 1;
+ data->dirstreams[data->actdir] = NULL;
}
- else
+ else
{
- int save_err;
- char *runp = dir.content;
+ int save_err;
+ char *runp = dir.content;
- while (result == 0 && *runp != '\0')
+ while (result == 0 && *runp != '\0')
{
- char *endp = __strchr (runp, '\0');
+ char *endp = __strchr (runp, '\0');
- result = process_entry (data, &dir, runp, endp - runp);
+ result = process_entry (data, &dir, runp, endp - runp);
- runp = endp + 1;
+ runp = endp + 1;
}
- save_err = errno;
- free (dir.content);
- __set_errno (save_err);
+ save_err = errno;
+ free (dir.content);
+ __set_errno (save_err);
}
- /* Prepare the return, revert the `struct FTW' information. */
- data->dirbuf[data->ftw.base - 1] = '\0';
- --data->ftw.level;
- data->ftw.base = previous_base;
+ if ((data->flags & FTW_ACTIONRETVAL) && result == FTW_SKIP_SIBLINGS)
+ result = 0;
+
+ /* Prepare the return, revert the `struct FTW' information. */
+ data->dirbuf[data->ftw.base - 1] = '\0';
+ --data->ftw.level;
+ data->ftw.base = previous_base;
- /* Finally, if we process depth-first report the directory. */
- if (result == 0 && (data->flags & FTW_DEPTH))
- result = (*data->func) (data->dirbuf, st, FTW_DP, &data->ftw);
+ /* Finally, if we process depth-first report the directory. */
+ if (result == 0 && (data->flags & FTW_DEPTH))
+ result = (*data->func) (data->dirbuf, st, FTW_DP, &data->ftw);
+
+ if (old_dir
+ && (data->flags & FTW_CHDIR)
+ && (result == 0
+ || ((data->flags & FTW_ACTIONRETVAL)
+ && (result != -1 && result != FTW_STOP))))
+ {
+ /* Change back to the parent directory. */
+ int done = 0;
+ if (old_dir->stream != NULL)
+ if (__fchdir (dirfd (old_dir->stream)) == 0)
+ done = 1;
- return result;
+ if (!done)
+ {
+ if (data->ftw.base == 1)
+ {
+ if (__chdir ("/") < 0)
+ result = -1;
+ }
+ else
+ if (__chdir ("..") < 0)
+ result = -1;
+ }
+ }
+
+ return result;
}
static int
+__attribute ((noinline))
internal_function
-ftw_startup (const char *dir, int is_nftw, void *func, int descriptors, int flags)
+ftw_startup (const char *dir, int is_nftw, void *func, int descriptors,
+ int flags)
{
- struct ftw_data data;
- struct STAT st;
- int result = 0;
- int save_err;
- char *cwd = NULL;
- char *cp;
-
- /* First make sure the parameters are reasonable. */
- if (unlikely(dir==NULL || *dir=='\0')) {
- __set_errno (ENOENT);
- return -1;
- }
- if ((__strlen(dir)+1) > NAME_MAX) {
- __set_errno(ENAMETOOLONG);
- return -1;
+ struct ftw_data data;
+ struct STAT st;
+ int result = 0;
+ int save_err;
+ char *cwd = NULL;
+ char *cp;
+
+ /* First make sure the parameters are reasonable. */
+ if (dir[0] == '\0')
+ {
+ __set_errno (ENOENT);
+ return -1;
}
- data.maxdir = descriptors < 1 ? 1 : descriptors;
- data.actdir = 0;
- data.dirstreams = (struct dir_data **) alloca (data.maxdir
- * sizeof (struct dir_data *));
- __memset (data.dirstreams, '\0', data.maxdir * sizeof (struct dir_data *));
-
- /* PATH_MAX is always defined when we get here. */
- data.dirbufsize = MAX (2 * __strlen (dir), PATH_MAX);
- data.dirbuf = (char *) malloc (data.dirbufsize);
- if (data.dirbuf == NULL)
- return -1;
- cp = stpcpy (data.dirbuf, dir);
- /* Strip trailing slashes. */
- while (cp > data.dirbuf + 1 && cp[-1] == '/')
- --cp;
- *cp = '\0';
-
- data.ftw.level = 0;
-
- /* Find basename. */
- while (cp > data.dirbuf && cp[-1] != '/')
- --cp;
- data.ftw.base = cp - data.dirbuf;
-
- data.flags = flags;
-
- /* This assignment might seem to be strange but it is what we want.
- The trick is that the first three arguments to the `ftw' and
- `nftw' callback functions are equal. Therefore we can call in
- every case the callback using the format of the `nftw' version
- and get the correct result since the stack layout for a function
- call in C allows this. */
- data.func = (NFTW_FUNC_T) func;
-
- /* Since we internally use the complete set of FTW_* values we need
- to reduce the value range before calling a `ftw' callback. */
- data.cvt_arr = is_nftw ? nftw_arr : ftw_arr;
-
- /* No object known so far. */
- data.known_objects = NULL;
-
- /* Now go to the directory containing the initial file/directory. */
- if (flags & FTW_CHDIR)
+ data.maxdir = descriptors < 1 ? 1 : descriptors;
+ data.actdir = 0;
+ data.dirstreams = (struct dir_data **) alloca (data.maxdir
+ * sizeof (struct dir_data *));
+ __memset (data.dirstreams, '\0', data.maxdir * sizeof (struct dir_data *));
+
+ /* PATH_MAX is always defined when we get here. */
+ data.dirbufsize = MAX (2 * __strlen (dir), PATH_MAX);
+ data.dirbuf = (char *) malloc (data.dirbufsize);
+ if (data.dirbuf == NULL)
+ return -1;
+ cp = __stpcpy (data.dirbuf, dir);
+ /* Strip trailing slashes. */
+ while (cp > data.dirbuf + 1 && cp[-1] == '/')
+ --cp;
+ *cp = '\0';
+
+ data.ftw.level = 0;
+
+ /* Find basename. */
+ while (cp > data.dirbuf && cp[-1] != '/')
+ --cp;
+ data.ftw.base = cp - data.dirbuf;
+
+ data.flags = flags;
+
+ /* This assignment might seem to be strange but it is what we want.
+ The trick is that the first three arguments to the `ftw' and
+ `nftw' callback functions are equal. Therefore we can call in
+ every case the callback using the format of the `nftw' version
+ and get the correct result since the stack layout for a function
+ call in C allows this. */
+ data.func = (NFTW_FUNC_T) func;
+
+ /* Since we internally use the complete set of FTW_* values we need
+ to reduce the value range before calling a `ftw' callback. */
+ data.cvt_arr = is_nftw ? nftw_arr : ftw_arr;
+
+ /* No object known so far. */
+ data.known_objects = NULL;
+
+ /* Now go to the directory containing the initial file/directory. */
+ if (flags & FTW_CHDIR)
{
- /* GNU extension ahead. */
- cwd = getcwd (NULL, 0);
- if (cwd == NULL)
- result = -1;
- else if (data.ftw.base > 0)
+ /* GNU extension ahead. */
+ cwd = __getcwd (NULL, 0);
+ if (cwd == NULL)
+ result = -1;
+ else if (data.ftw.base > 0)
{
- /* Change to the directory the file is in. In data.dirbuf
- we have a writable copy of the file name. Just NUL
- terminate it for now and change the directory. */
- if (data.ftw.base == 1)
- /* I.e., the file is in the root directory. */
- result = chdir ("/");
- else
+ /* Change to the directory the file is in. In data.dirbuf
+ we have a writable copy of the file name. Just NUL
+ terminate it for now and change the directory. */
+ if (data.ftw.base == 1)
+ /* I.e., the file is in the root directory. */
+ result = __chdir ("/");
+ else
{
- char ch = data.dirbuf[data.ftw.base - 1];
- data.dirbuf[data.ftw.base - 1] = '\0';
- result = chdir (data.dirbuf);
- data.dirbuf[data.ftw.base - 1] = ch;
+ char ch = data.dirbuf[data.ftw.base - 1];
+ data.dirbuf[data.ftw.base - 1] = '\0';
+ result = __chdir (data.dirbuf);
+ data.dirbuf[data.ftw.base - 1] = ch;
}
}
}
- /* Get stat info for start directory. */
- if (result == 0)
+ /* Get stat info for start directory. */
+ if (result == 0)
{
- const char *name = ((data.flags & FTW_CHDIR)
- ? data.dirbuf + data.ftw.base
- : data.dirbuf);
+ const char *name = ((data.flags & FTW_CHDIR)
+ ? data.dirbuf + data.ftw.base
+ : data.dirbuf);
- if (((flags & FTW_PHYS)
- ? LSTAT (name, &st)
- : XSTAT (name, &st)) < 0)
+ if (((flags & FTW_PHYS)
+ ? LXSTAT (_STAT_VER, name, &st)
+ : XSTAT (_STAT_VER, name, &st)) < 0)
{
- if (!(flags & FTW_PHYS)
- && errno == ENOENT
- && LSTAT (name, &st) == 0
- && S_ISLNK (st.st_mode))
- result = (*data.func) (data.dirbuf, &st, data.cvt_arr[FTW_SLN],
- &data.ftw);
- else
- /* No need to call the callback since we cannot say anything
- about the object. */
- result = -1;
+ if (!(flags & FTW_PHYS)
+ && errno == ENOENT
+ && LXSTAT (_STAT_VER, name, &st) == 0
+ && S_ISLNK (st.st_mode))
+ result = (*data.func) (data.dirbuf, &st, data.cvt_arr[FTW_SLN],
+ &data.ftw);
+ else
+ /* No need to call the callback since we cannot say anything
+ about the object. */
+ result = -1;
}
- else
+ else
{
- if (S_ISDIR (st.st_mode))
+ if (S_ISDIR (st.st_mode))
{
- /* Remember the device of the initial directory in case
- FTW_MOUNT is given. */
- data.dev = st.st_dev;
+ /* Remember the device of the initial directory in case
+ FTW_MOUNT is given. */
+ data.dev = st.st_dev;
- /* We know this directory now. */
- if (!(flags & FTW_PHYS))
- result = add_object (&data, &st);
+ /* We know this directory now. */
+ if (!(flags & FTW_PHYS))
+ result = add_object (&data, &st);
- if (result == 0)
- result = ftw_dir (&data, &st);
+ if (result == 0)
+ result = ftw_dir (&data, &st, NULL);
}
- else
+ else
{
- int flag = S_ISLNK (st.st_mode) ? FTW_SL : FTW_F;
+ int flag = S_ISLNK (st.st_mode) ? FTW_SL : FTW_F;
- result = (*data.func) (data.dirbuf, &st, data.cvt_arr[flag],
- &data.ftw);
+ result = (*data.func) (data.dirbuf, &st, data.cvt_arr[flag],
+ &data.ftw);
}
}
+
+ if ((flags & FTW_ACTIONRETVAL)
+ && (result == FTW_SKIP_SUBTREE || result == FTW_SKIP_SIBLINGS))
+ result = 0;
}
- /* Return to the start directory (if necessary). */
- if (cwd != NULL)
+ /* Return to the start directory (if necessary). */
+ if (cwd != NULL)
{
- int save_err = errno;
- chdir (cwd);
- free (cwd);
- __set_errno (save_err);
+ int save_err = errno;
+ __chdir (cwd);
+ free (cwd);
+ __set_errno (save_err);
}
- /* Free all memory. */
- save_err = errno;
- tdestroy (data.known_objects, free);
- free (data.dirbuf);
- __set_errno (save_err);
+ /* Free all memory. */
+ save_err = errno;
+ __tdestroy (data.known_objects, free);
+ free (data.dirbuf);
+ __set_errno (save_err);
- return result;
+ return result;
}
/* Entry points. */
-int FTW_NAME (const char *path, FTW_FUNC_T func, int descriptors)
+int
+FTW_NAME (path, func, descriptors)
+ const char *path;
+ FTW_FUNC_T func;
+ int descriptors;
{
- return ftw_startup (path, 0, func, descriptors, 0);
+ return ftw_startup (path, 0, func, descriptors, 0);
}
-int NFTW_NAME (const char *path, NFTW_FUNC_T func, int descriptors, int flags)
+#ifndef _LIBC
+int
+NFTW_NAME (path, func, descriptors, flags)
+ const char *path;
+ NFTW_FUNC_T func;
+ int descriptors;
+ int flags;
{
- return ftw_startup (path, 1, func, descriptors, flags);
+ return ftw_startup (path, 1, func, descriptors, flags);
}
+#else
+
+#include <shlib-compat.h>
+
+int NFTW_NEW_NAME (const char *, NFTW_FUNC_T, int, int);
+
+int
+NFTW_NEW_NAME (path, func, descriptors, flags)
+ const char *path;
+ NFTW_FUNC_T func;
+ int descriptors;
+ int flags;
+{
+ if (flags
+ & ~(FTW_PHYS | FTW_MOUNT | FTW_CHDIR | FTW_DEPTH | FTW_ACTIONRETVAL))
+ {
+ __set_errno (EINVAL);
+ return -1;
+ }
+ return ftw_startup (path, 1, func, descriptors, flags);
+}
+
+versioned_symbol (libc, NFTW_NEW_NAME, NFTW_NAME, GLIBC_2_3_3);
+
+#if SHLIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_3_3)
+
+/* Older nftw* version just ignored all unknown flags. */
+
+int NFTW_OLD_NAME (const char *, NFTW_FUNC_T, int, int);
+
+int
+attribute_compat_text_section
+NFTW_OLD_NAME (path, func, descriptors, flags)
+ const char *path;
+ NFTW_FUNC_T func;
+ int descriptors;
+ int flags;
+{
+ flags &= (FTW_PHYS | FTW_MOUNT | FTW_CHDIR | FTW_DEPTH);
+ return ftw_startup (path, 1, func, descriptors, flags);
+}
+
+compat_symbol (libc, NFTW_OLD_NAME, NFTW_NAME, GLIBC_2_1);
+#endif
#endif
OSDN Git Service
