io: Add ftw64 with 64-bit time_t support

Similar to fts, ftw routines passes a stat pointer that might
differ of size and layout when 64-bit time API is used.

Checked on i686-linux-gnu and x86_64-linux-gnu.

Reviewed-by: Lukasz Majewski <lukma@denx.de>
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>

4 files changed, 83 insertions, 6 deletions

diff --git a/io/Makefile b/io/Makefile
index 12c832c..d35e966 100644
--- a/io/Makefile
+++ b/io/Makefile
@@ -55,7 +55,8 @@ routines :=								\
 	posix_fallocate posix_fallocate64				\
 	sendfile sendfile64 copy_file_range 				\
 	utimensat futimens file_change_detection			\
-	fts64-time64
+	fts64-time64							\
+	ftw64-time64
 
 others		:= pwd
 test-srcs	:= ftwtest
@@ -106,6 +107,7 @@ CFLAGS-fts64.c += -Wno-uninitialized $(uses-callbacks) -fexceptions
 CFLAGS-fts64-time64.c += -Wno-uninitialized $(uses-callbacks) -fexceptions
 CFLAGS-ftw.c += $(uses-callbacks) -fexceptions
 CFLAGS-ftw64.c += $(uses-callbacks) -fexceptions
+CFLAGS-ftw64-time64.c += $(uses-callbacks) -fexceptions
 CFLAGS-posix_fallocate.c += -fexceptions
 CFLAGS-posix_fallocate64.c += -fexceptions
 CFLAGS-fallocate.c += -fexceptions
diff --git a/io/ftw.c b/io/ftw.c
index baca3de..ce1c6a1 100644
--- a/io/ftw.c
+++ b/io/ftw.c
@@ -821,7 +821,7 @@ FTW_NAME (const char *path, FTW_FUNC_T func, int descriptors)
   return ftw_startup (path, 0, func, descriptors, 0);
 }
 
-#ifndef _LIBC
+#ifndef NFTW_OLD_NAME
 int
 NFTW_NAME (const char *path, NFTW_FUNC_T func, int descriptors, int flags)
 {
@@ -844,7 +844,6 @@ NFTW_NEW_NAME (const char *path, NFTW_FUNC_T func, int descriptors, int flags)
     }
   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)
@@ -863,4 +862,4 @@ NFTW_OLD_NAME (const char *path, NFTW_FUNC_T func, int descriptors, int flags)
 
 compat_symbol (libc, NFTW_OLD_NAME, NFTW_NAME, GLIBC_2_1);
 # endif
-#endif
+#endif /* NFTW_OLD_NAME  */
diff --git a/io/ftw.h b/io/ftw.h
index 751d689..4464988 100644
--- a/io/ftw.h
+++ b/io/ftw.h
@@ -137,15 +137,36 @@ extern int ftw (const char *__dir, __ftw_func_t __func, int __descriptors)
      __nonnull ((1, 2));
 #else
 # ifdef __REDIRECT
+#  ifndef __USE_TIME_BITS64
 extern int __REDIRECT (ftw, (const char *__dir, __ftw_func_t __func,
 			     int __descriptors), ftw64) __nonnull ((1, 2));
+#  else
+extern int __REDIRECT (ftw, (const char *__dir, __ftw_func_t __func,
+			     int __descriptors), __ftw64_time64)
+     __nonnull ((1, 2));
+#  endif
 # else
-#  define ftw ftw64
+#  ifndef __USE_TIME_BITS64
+#   define ftw ftw64
+#  else
+#   define ftw __ftw64_time64
+#  endif
 # endif
 #endif
 #ifdef __USE_LARGEFILE64
+# ifndef __USE_TIME_BITS64
 extern int ftw64 (const char *__dir, __ftw64_func_t __func,
 		  int __descriptors) __nonnull ((1, 2));
+# else
+#  ifdef __REDIRECT
+extern int __REDIRECT (ftw64, (const char *__dir, __ftw64_func_t __func,
+			       int __descriptors),
+		       __ftw64_time64)
+     __nonnull ((1, 2));
+#  else
+#   define nftw64 __nftw64_time64
+#  endif
+# endif
 #endif
 
 #ifdef __USE_XOPEN_EXTENDED
@@ -159,16 +180,37 @@ extern int nftw (const char *__dir, __nftw_func_t __func, int __descriptors,
 		 int __flag) __nonnull ((1, 2));
 # else
 #  ifdef __REDIRECT
+#   ifndef __USE_TIME_BITS64
 extern int __REDIRECT (nftw, (const char *__dir, __nftw_func_t __func,
 			      int __descriptors, int __flag), nftw64)
      __nonnull ((1, 2));
+#   else
+extern int __REDIRECT (nftw, (const char *__dir, __nftw_func_t __func,
+			      int __descriptors, int __flag), __nftw64_time64)
+     __nonnull ((1, 2));
+#   endif
 #  else
-#   define nftw nftw64
+#   ifndef __USE_TIME_BITS64
+#    define nftw nftw64
+#   else
+#    define nftw __nftw64_time64
+#   endif
 #  endif
 # endif
 # ifdef __USE_LARGEFILE64
+#  ifndef __USE_TIME_BITS64
 extern int nftw64 (const char *__dir, __nftw64_func_t __func,
 		   int __descriptors, int __flag) __nonnull ((1, 2));
+#  else
+#   ifdef __REDIRECT
+extern int __REDIRECT (nftw64, (const char *__dir, __nftw64_func_t __func,
+				int __descriptors, int __flag),
+		       __nftw64_time64)
+     __nonnull ((1, 2));
+#   else
+#    define nftw64 __nftw64_time64
+#   endif
+#  endif
 # endif
 #endif
 
diff --git a/io/ftw64-time64.c b/io/ftw64-time64.c
new file mode 100644
index 0000000..7c9db54
--- /dev/null
+++ b/io/ftw64-time64.c
@@ -0,0 +1,34 @@
+/* File tree walker functions.  LFS version.
+   Copyright (C) 1996-2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
+
+   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, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <sys/types.h>
+
+#if __TIMESIZE != 64
+# define FTW_NAME       __ftw64_time64
+# define NFTW_NAME      __nftw64_time64
+# define INO_T          ino64_t
+# define STRUCT_STAT    __stat64_t64
+# define LSTAT          __lstat64_time64
+# define STAT           __stat64_time64
+# define FSTATAT        __fstatat64_time64
+# define FTW_FUNC_T     __ftw64_time64_func_t
+# define NFTW_FUNC_T    __nftw64_time64_func_t
+
+# include "ftw.c"
+#endif