Commit 3dcd3612dc

Andrew Kelley <andrew@ziglang.org>
2021-12-15 23:23:56
glibc: use linux-specific files for nonshared
Upstream, some of the nonshared functions moved to be different for hurd and for linux. Since our glibc is linux-only we update to use the linux-specific files. This fixes std lib tests for x86_64 when linking glibc.
1 parent 19ca241
lib/libc/glibc/sysdeps/unix/sysv/linux/alpha/kernel_stat.h
@@ -0,0 +1,91 @@
+/* Definition of `struct stat' used in the kernel.  */
+struct kernel_stat
+  {
+    unsigned int st_dev;
+    unsigned int st_ino;
+    unsigned int st_mode;
+    unsigned int st_nlink;
+    unsigned int st_uid;
+    unsigned int st_gid;
+    unsigned int st_rdev;
+    long int st_size;
+    unsigned long int st_atime_sec;
+    unsigned long int st_mtime_sec;
+    unsigned long int st_ctime_sec;
+    unsigned int st_blksize;
+    int st_blocks;
+    unsigned int st_flags;
+    unsigned int st_gen;
+  };
+
+/* Definition of `struct stat64' used in the kernel.  */
+struct kernel_stat64
+  {
+    unsigned long   st_dev;
+    unsigned long   st_ino;
+    unsigned long   st_rdev;
+    long            st_size;
+    unsigned long   st_blocks;
+
+    unsigned int    st_mode;
+    unsigned int    st_uid;
+    unsigned int    st_gid;
+    unsigned int    st_blksize;
+    unsigned int    st_nlink;
+    unsigned int    __pad0;
+
+    unsigned long   st_atime_sec;
+    unsigned long   st_atimensec;
+    unsigned long   st_mtime_sec;
+    unsigned long   st_mtimensec;
+    unsigned long   st_ctime_sec;
+    unsigned long   st_ctimensec;
+    long            __glibc_reserved[3];
+  };
+
+/* Definition of `struct stat' used by glibc 2.0.  */
+struct glibc2_stat
+  {
+    __dev_t st_dev;
+    __ino_t st_ino;
+    __mode_t st_mode;
+    __nlink_t st_nlink;
+    __uid_t st_uid;
+    __gid_t st_gid;
+    __dev_t st_rdev;
+    __off_t st_size;
+    __time_t st_atime_sec;
+    __time_t st_mtime_sec;
+    __time_t st_ctime_sec;
+    unsigned int st_blksize;
+    int st_blocks;
+    unsigned int st_flags;
+    unsigned int st_gen;
+  };
+
+/* Definition of `struct stat' used by glibc 2.1.  */
+struct glibc21_stat
+  {
+    __dev_t st_dev;
+    __ino64_t st_ino;
+    __mode_t st_mode;
+    __nlink_t st_nlink;
+    __uid_t st_uid;
+    __gid_t st_gid;
+    __dev_t st_rdev;
+    __off_t st_size;
+    __time_t st_atime_sec;
+    __time_t st_mtime_sec;
+    __time_t st_ctime_sec;
+    __blkcnt64_t st_blocks;
+    __blksize_t st_blksize;
+    unsigned int st_flags;
+    unsigned int st_gen;
+    int __pad3;
+    long __glibc_reserved[4];
+  };
+
+#define STAT_IS_KERNEL_STAT 0
+#define STAT64_IS_KERNEL_STAT64 1
+#define XSTAT_IS_XSTAT64 1
+#define STATFS_IS_STATFS64 0
lib/libc/glibc/sysdeps/unix/sysv/linux/arm/kernel_stat.h
@@ -0,0 +1,40 @@
+/* Definition of `struct stat' used in the kernel..  */
+struct kernel_stat
+  {
+    unsigned short int st_dev;
+    unsigned short int __pad1;
+#define _HAVE___PAD1
+    unsigned long int st_ino;
+    unsigned short int st_mode;
+    unsigned short int st_nlink;
+    unsigned short int st_uid;
+    unsigned short int st_gid;
+    unsigned short int st_rdev;
+    unsigned short int __pad2;
+#define _HAVE___PAD2
+    unsigned long int st_size;
+    unsigned long int st_blksize;
+    unsigned long int st_blocks;
+    struct timespec st_atim;
+    struct timespec st_mtim;
+    struct timespec st_ctim;
+    unsigned long int __glibc_reserved4;
+#define _HAVE___UNUSED4
+    unsigned long int __glibc_reserved5;
+#define _HAVE___UNUSED5
+  };
+
+#define _HAVE_STAT___UNUSED4
+#define _HAVE_STAT___UNUSED5
+#define _HAVE_STAT___PAD1
+#define _HAVE_STAT___PAD2
+#define _HAVE_STAT_NSEC
+#define _HAVE_STAT64___PAD1
+#define _HAVE_STAT64___PAD2
+#define _HAVE_STAT64___ST_INO
+#define _HAVE_STAT64_NSEC
+
+#define STAT_IS_KERNEL_STAT 0
+#define STAT64_IS_KERNEL_STAT64 1
+#define XSTAT_IS_XSTAT64 0
+#define STATFS_IS_STATFS64 0
lib/libc/glibc/io/fstat64.c → lib/libc/glibc/sysdeps/unix/sysv/linux/csky/kernel_stat.h
@@ -1,4 +1,5 @@
-/* Copyright (C) 1996-2021 Free Software Foundation, Inc.
+/* Internal definitions for stat functions.  Linux/csky.
+   Copyright (C) 2011-2021 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
@@ -12,22 +13,9 @@
    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
+   License along with the GNU C Library.  If not, see
    <https://www.gnu.org/licenses/>.  */
 
-#include <sys/stat.h>
-#include <errno.h>
-#include <fcntl.h>
-
-int
-__fstat64 (int fd, struct stat64 *buf)
-{
-  if (fd < 0)
-    {
-      __set_errno (EBADF);
-      return -1;
-    }
-  return __fstatat64 (fd, "", buf, AT_EMPTY_PATH);
-}
-hidden_def (__fstat64)
-weak_alias (__fstat64, fstat64)
+#define STAT_IS_KERNEL_STAT  1
+#define XSTAT_IS_XSTAT64     0
+#define STATFS_IS_STATFS64   0
lib/libc/glibc/sysdeps/unix/sysv/linux/hppa/kernel_stat.h
@@ -0,0 +1,36 @@
+/* definition of "struct stat" from the kernel */
+struct kernel_stat {
+	unsigned long	st_dev;		/* dev_t is 32 bits on parisc */
+	unsigned long	st_ino;		/* 32 bits */
+	unsigned short	st_mode;	/* 16 bits */
+	unsigned short	st_nlink;	/* 16 bits */
+	unsigned short	st_reserved1;	/* old st_uid */
+	unsigned short	st_reserved2;	/* old st_gid */
+	unsigned long	st_rdev;
+	unsigned long   st_size;
+	struct timespec st_atim;
+	struct timespec st_mtim;
+	struct timespec st_ctim;
+	long		st_blksize;
+	long		st_blocks;
+	unsigned long	__glibc_reserved1;	/* ACL stuff */
+	unsigned long	__glibc_reserved2;	/* network */
+	unsigned long	__glibc_reserved3;	/* network */
+	unsigned long	__glibc_reserved4;	/* cnodes */
+	unsigned short	__glibc_reserved5;	/* netsite */
+	short		st_fstype;
+	unsigned long	st_realdev;
+	unsigned short	st_basemode;
+	unsigned short	st_spareshort;
+	unsigned long	st_uid;
+	unsigned long   st_gid;
+	unsigned long	st_spare4[3];
+};
+
+#define _HAVE_STAT_NSEC
+#define _HAVE_STAT64_NSEC
+
+#define STAT_IS_KERNEL_STAT 0
+#define STAT64_IS_KERNEL_STAT64 1
+#define XSTAT_IS_XSTAT64 0
+#define STATFS_IS_STATFS64 0
lib/libc/glibc/sysdeps/unix/sysv/linux/i386/kernel_stat.h
@@ -0,0 +1,40 @@
+/* Definition of `struct stat' used in the kernel..  */
+struct kernel_stat
+  {
+    unsigned short int st_dev;
+    unsigned short int __pad1;
+#define _HAVE___PAD1
+    unsigned long int st_ino;
+    unsigned short int st_mode;
+    unsigned short int st_nlink;
+    unsigned short int st_uid;
+    unsigned short int st_gid;
+    unsigned short int st_rdev;
+    unsigned short int __pad2;
+#define _HAVE___PAD2
+    unsigned long int st_size;
+    unsigned long int st_blksize;
+    unsigned long int st_blocks;
+    struct timespec st_atim;
+    struct timespec st_mtim;
+    struct timespec st_ctim;
+    unsigned long int __glibc_reserved4;
+#define _HAVE___UNUSED4
+    unsigned long int __glibc_reserved5;
+#define _HAVE___UNUSED5
+  };
+
+#define _HAVE_STAT___UNUSED4
+#define _HAVE_STAT___UNUSED5
+#define _HAVE_STAT___PAD1
+#define _HAVE_STAT___PAD2
+#define _HAVE_STAT_NSEC
+#define _HAVE_STAT64___PAD1
+#define _HAVE_STAT64___PAD2
+#define _HAVE_STAT64___ST_INO
+#define _HAVE_STAT64_NSEC
+
+#define STAT_IS_KERNEL_STAT 0
+#define STAT64_IS_KERNEL_STAT64 1
+#define XSTAT_IS_XSTAT64 0
+#define STATFS_IS_STATFS64 0
lib/libc/glibc/sysdeps/unix/sysv/linux/m68k/kernel_stat.h
@@ -0,0 +1,40 @@
+/* Definition of `struct stat' used in the kernel..  */
+struct kernel_stat
+  {
+    unsigned short int st_dev;
+    unsigned short int __pad1;
+#define _HAVE___PAD1
+    unsigned long int st_ino;
+    unsigned short int st_mode;
+    unsigned short int st_nlink;
+    unsigned short int st_uid;
+    unsigned short int st_gid;
+    unsigned short int st_rdev;
+    unsigned short int __pad2;
+#define _HAVE___PAD2
+    unsigned long int st_size;
+    unsigned long int st_blksize;
+    unsigned long int st_blocks;
+    struct timespec st_atim;
+    struct timespec st_mtim;
+    struct timespec st_ctim;
+    unsigned long int __glibc_reserved4;
+#define _HAVE___UNUSED4
+    unsigned long int __glibc_reserved5;
+#define _HAVE___UNUSED5
+  };
+
+#define _HAVE_STAT___UNUSED4
+#define _HAVE_STAT___UNUSED5
+#define _HAVE_STAT___PAD1
+#define _HAVE_STAT___PAD2
+#define _HAVE_STAT_NSEC
+#define _HAVE_STAT64___PAD1
+#define _HAVE_STAT64___PAD2
+#define _HAVE_STAT64___ST_INO
+#define _HAVE_STAT64_NSEC
+
+#define STAT_IS_KERNEL_STAT 0
+#define STAT64_IS_KERNEL_STAT64 1
+#define XSTAT_IS_XSTAT64 0
+#define STATFS_IS_STATFS64 0
lib/libc/glibc/sysdeps/unix/sysv/linux/microblaze/kernel_stat.h
@@ -0,0 +1,54 @@
+/* Definition of `struct stat' used in the kernel
+   Copyright (C) 2013-2021 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, see
+   <https://www.gnu.org/licenses/>.  */
+
+struct kernel_stat
+{
+        unsigned long   st_dev;         /* Device.  */
+        unsigned long   st_ino;         /* File serial number.  */
+        unsigned int    st_mode;        /* File mode.  */
+        unsigned int    st_nlink;       /* Link count.  */
+        unsigned int    st_uid;         /* User ID of the file's owner.  */
+        unsigned int    st_gid;         /* Group ID of the file's group.  */
+        unsigned long   st_rdev;        /* Device number, if device.  */
+        unsigned long   __pad2;
+#define _HAVE_STAT___PAD2
+#define _HAVE_STAT64___PAD2
+        long            st_size;        /* Size of file, in bytes.  */
+        int             st_blksize;     /* Optimal block size for I/O.  */
+        int             __pad3;
+#define _HAVE_STAT___PAD3
+#define _HAVE_STAT64___PAD3
+        long            st_blocks;      /* Number 512-byte blocks allocated.  */
+        struct timespec st_atim;
+        struct timespec st_mtim;
+        struct timespec st_ctim;
+#define _HAVE_STAT_NSEC
+#define _HAVE_STAT64_NSEC
+        unsigned int    __glibc_reserved4;
+#define _HAVE_STAT___UNUSED4
+#define _HAVE_STAT64___UNUSED4
+        unsigned int    __glibc_reserved5;
+#define _HAVE_STAT___UNUSED5
+#define _HAVE_STAT64___UNUSED5
+};
+
+#define STAT_IS_KERNEL_STAT 0
+#define STAT64_IS_KERNEL_STAT64 1
+#define XSTAT_IS_XSTAT64 0
+#define STATFS_IS_STATFS64 0
lib/libc/glibc/sysdeps/unix/sysv/linux/mips/mips64/kstat_cp.h
@@ -0,0 +1,73 @@
+/* Struct stat/stat64 to stat/stat64 conversion for Linux.
+   Copyright (C) 2020-2021 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, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <sys/stat.h>
+#include <kernel_stat.h>
+
+static inline long int
+__cp_kstat_stat (const struct kernel_stat *kst, struct stat *st)
+{
+  if (! in_ino_t_range (kst->st_ino)
+      || ! in_off_t_range (kst->st_size)
+      || ! in_blkcnt_t_range (kst->st_blocks))
+    return -EOVERFLOW;
+
+  st->st_dev = kst->st_dev;
+  memset (&st->st_pad1, 0, sizeof (st->st_pad1));
+  st->st_ino = kst->st_ino;
+  st->st_mode = kst->st_mode;
+  st->st_nlink = kst->st_nlink;
+  st->st_uid = kst->st_uid;
+  st->st_gid = kst->st_gid;
+  st->st_rdev = kst->st_rdev;
+  memset (&st->st_pad2, 0, sizeof (st->st_pad2));
+  st->st_size = kst->st_size;
+  st->st_pad3 = 0;
+  st->st_atim.tv_sec = kst->st_atime_sec;
+  st->st_atim.tv_nsec = kst->st_atime_nsec;
+  st->st_mtim.tv_sec = kst->st_mtime_sec;
+  st->st_mtim.tv_nsec = kst->st_mtime_nsec;
+  st->st_ctim.tv_sec = kst->st_ctime_sec;
+  st->st_ctim.tv_nsec = kst->st_ctime_nsec;
+  st->st_blksize = kst->st_blksize;
+  st->st_blocks = kst->st_blocks;
+  memset (&st->st_pad5, 0, sizeof (st->st_pad5));
+
+  return 0;
+}
+
+static inline void
+__cp_kstat_stat64_t64 (const struct kernel_stat *kst, struct __stat64_t64 *st)
+{
+  st->st_dev = kst->st_dev;
+  st->st_ino = kst->st_ino;
+  st->st_mode = kst->st_mode;
+  st->st_nlink = kst->st_nlink;
+  st->st_uid = kst->st_uid;
+  st->st_gid = kst->st_gid;
+  st->st_rdev = kst->st_rdev;
+  st->st_size = kst->st_size;
+  st->st_blksize = kst->st_blksize;
+  st->st_blocks = kst->st_blocks;
+  st->st_atim.tv_sec = kst->st_atime_sec;
+  st->st_atim.tv_nsec = kst->st_atime_nsec;
+  st->st_mtim.tv_sec = kst->st_mtime_sec;
+  st->st_mtim.tv_nsec = kst->st_mtime_nsec;
+  st->st_ctim.tv_sec = kst->st_ctime_sec;
+  st->st_ctim.tv_nsec = kst->st_ctime_nsec;
+}
lib/libc/glibc/sysdeps/unix/sysv/linux/mips/kernel_stat.h
@@ -0,0 +1,75 @@
+#ifndef _KERNEL_STAT_H
+#define _KERNEL_STAT_H
+
+#include <sgidefs.h>
+/* As tempting as it is to define XSTAT_IS_XSTAT64 for n64, the
+   userland data structures are not identical, because of different
+   padding.  */
+/* Definition of `struct stat' used in the kernel.  */
+#if _MIPS_SIM != _ABIO32
+struct kernel_stat
+  {
+    unsigned int st_dev;
+    unsigned int __pad1[3];
+    unsigned long long st_ino;
+    unsigned int st_mode;
+    unsigned int st_nlink;
+    int st_uid;
+    int st_gid;
+    unsigned int st_rdev;
+    unsigned int __pad2[3];
+    long long st_size;
+    unsigned int st_atime_sec;
+    unsigned int st_atime_nsec;
+    unsigned int st_mtime_sec;
+    unsigned int st_mtime_nsec;
+    unsigned int st_ctime_sec;
+    unsigned int st_ctime_nsec;
+    unsigned int st_blksize;
+    unsigned int __pad3;
+    unsigned long long st_blocks;
+  };
+#else
+struct kernel_stat
+  {
+    unsigned long int st_dev;
+    long int __pad1[3];			/* Reserved for network id */
+    unsigned long int st_ino;
+    unsigned long int st_mode;
+    unsigned long int st_nlink;
+    long int st_uid;
+    long int st_gid;
+    unsigned long int st_rdev;
+    long int __pad2[2];
+    long int st_size;
+    long int __pad3;
+    unsigned int st_atime_sec;
+    unsigned int st_atime_nsec;
+    unsigned int st_mtime_sec;
+    unsigned int st_mtime_nsec;
+    unsigned int st_ctime_sec;
+    unsigned int st_ctime_nsec;
+    long int st_blksize;
+    long int st_blocks;
+    char st_fstype[16];			/* Filesystem type name, unsupported */
+    long st_pad4[8];
+    /* Linux specific fields */
+    unsigned int st_flags;
+    unsigned int st_gen;
+  };
+#endif
+
+#define STAT_IS_KERNEL_STAT 0
+#define STAT64_IS_KERNEL_STAT64 0
+#define XSTAT_IS_XSTAT64 0
+#if _MIPS_SIM == _ABI64
+# define STATFS_IS_STATFS64 1
+#else
+# define STATFS_IS_STATFS64 0
+#endif
+/* MIPS64 has unsigned 32 bit timestamps fields, so use statx as well.  */
+#if _MIPS_SIM == _ABI64
+# define STAT_HAS_TIME32
+#endif
+
+#endif
lib/libc/glibc/sysdeps/unix/sysv/linux/nios2/kernel_stat.h
@@ -0,0 +1,22 @@
+/* Internal definitions for stat functions.  Linux/nios2.
+   Copyright (C) 2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
+
+   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/>.  */
+
+#define STAT_IS_KERNEL_STAT  1
+#define XSTAT_IS_XSTAT64     0
+#define STATFS_IS_STATFS64   0
lib/libc/glibc/sysdeps/unix/sysv/linux/powerpc/powerpc32/kernel_stat.h
@@ -0,0 +1,53 @@
+/* Definition of `struct stat' used in the kernel.
+   Copyright (C) 1997-2021 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, see
+   <https://www.gnu.org/licenses/>.  */
+
+struct kernel_stat
+  {
+    unsigned int st_dev;
+    unsigned int st_ino;
+    unsigned int st_mode;
+    unsigned short st_nlink;
+    unsigned int st_uid;
+    unsigned int st_gid;
+    unsigned int st_rdev;
+    unsigned long int st_size;
+    unsigned long int st_blksize;
+    unsigned long int st_blocks;
+    struct timespec st_atim;
+    struct timespec st_mtim;
+    struct timespec st_ctim;
+    unsigned long int __glibc_reserved4;
+#define _HAVE___UNUSED4
+    unsigned long int __glibc_reserved5;
+#define _HAVE___UNUSED5
+  };
+
+#define _HAVE_STAT___UNUSED4
+#define _HAVE_STAT___UNUSED5
+#define _HAVE_STAT___PAD1
+#define _HAVE_STAT___PAD2
+#define _HAVE_STAT_NSEC
+#define _HAVE_STAT64___UNUSED4
+#define _HAVE_STAT64___UNUSED5
+#define _HAVE_STAT64___PAD2
+#define _HAVE_STAT64_NSEC
+
+#define STAT_IS_KERNEL_STAT 0
+#define STAT64_IS_KERNEL_STAT64 1
+#define XSTAT_IS_XSTAT64 0
+#define STATFS_IS_STATFS64 0
lib/libc/glibc/sysdeps/unix/sysv/linux/s390/s390-32/kernel_stat.h
@@ -0,0 +1,40 @@
+/* Definition of `struct stat' used in the kernel..  */
+struct kernel_stat
+  {
+    unsigned short int st_dev;
+    unsigned short int __pad1;
+#define _HAVE___PAD1
+    unsigned long int st_ino;
+    unsigned short int st_mode;
+    unsigned short int st_nlink;
+    unsigned short int st_uid;
+    unsigned short int st_gid;
+    unsigned short int st_rdev;
+    unsigned short int __pad2;
+#define _HAVE___PAD2
+    unsigned long int st_size;
+    unsigned long int st_blksize;
+    unsigned long int st_blocks;
+    struct timespec st_atim;
+    struct timespec st_mtim;
+    struct timespec st_ctim;
+    unsigned long int __glibc_reserved4;
+#define _HAVE___UNUSED4
+    unsigned long int __glibc_reserved5;
+#define _HAVE___UNUSED5
+  };
+
+#define _HAVE_STAT___UNUSED4
+#define _HAVE_STAT___UNUSED5
+#define _HAVE_STAT___PAD1
+#define _HAVE_STAT___PAD2
+#define _HAVE_STAT_NSEC
+#define _HAVE_STAT64___PAD1
+#define _HAVE_STAT64___PAD2
+#define _HAVE_STAT64___ST_INO
+#define _HAVE_STAT64_NSEC
+
+#define STAT_IS_KERNEL_STAT 0
+#define STAT64_IS_KERNEL_STAT64 1
+#define XSTAT_IS_XSTAT64 0
+#define STATFS_IS_STATFS64 0
lib/libc/glibc/sysdeps/unix/sysv/linux/sh/kernel_stat.h
@@ -0,0 +1,40 @@
+/* Definition of `struct stat' used in the kernel..  */
+struct kernel_stat
+  {
+    unsigned short int st_dev;
+    unsigned short int __pad1;
+#define _HAVE___PAD1
+    unsigned long int st_ino;
+    unsigned short int st_mode;
+    unsigned short int st_nlink;
+    unsigned short int st_uid;
+    unsigned short int st_gid;
+    unsigned short int st_rdev;
+    unsigned short int __pad2;
+#define _HAVE___PAD2
+    unsigned long int st_size;
+    unsigned long int st_blksize;
+    unsigned long int st_blocks;
+    struct timespec st_atim;
+    struct timespec st_mtim;
+    struct timespec st_ctim;
+    unsigned long int __glibc_reserved4;
+#define _HAVE___UNUSED4
+    unsigned long int __glibc_reserved5;
+#define _HAVE___UNUSED5
+  };
+
+#define _HAVE_STAT___UNUSED4
+#define _HAVE_STAT___UNUSED5
+#define _HAVE_STAT___PAD1
+#define _HAVE_STAT___PAD2
+#define _HAVE_STAT_NSEC
+#define _HAVE_STAT64___PAD1
+#define _HAVE_STAT64___PAD2
+#define _HAVE_STAT64___ST_INO
+#define _HAVE_STAT64_NSEC
+
+#define STAT_IS_KERNEL_STAT 0
+#define STAT64_IS_KERNEL_STAT64 1
+#define XSTAT_IS_XSTAT64 0
+#define STATFS_IS_STATFS64 0
lib/libc/glibc/sysdeps/unix/sysv/linux/sparc/sparc32/kernel_stat.h
@@ -0,0 +1,37 @@
+/* Definition of `struct stat' used in the kernel */
+struct kernel_stat
+  {
+    unsigned short int st_dev;
+    unsigned long int st_ino;
+    unsigned short int st_mode;
+    short int st_nlink;
+    unsigned short int st_uid;
+    unsigned short int st_gid;
+    unsigned short int st_rdev;
+    long int st_size;
+    struct timespec st_atim;
+    struct timespec st_mtim;
+    struct timespec st_ctim;
+    long int st_blksize;
+    long int st_blocks;
+    unsigned long int __glibc_reserved4;
+    unsigned long int __glibc_reserved5;
+  };
+
+#define _HAVE___UNUSED4
+#define _HAVE___UNUSED5
+
+#define _HAVE_STAT___UNUSED4
+#define _HAVE_STAT___UNUSED5
+#define _HAVE_STAT___PAD1
+#define _HAVE_STAT___PAD2
+#define _HAVE_STAT64___UNUSED4
+#define _HAVE_STAT64___UNUSED5
+#define _HAVE_STAT64___PAD2
+#define _HAVE_STAT_NSEC
+#define _HAVE_STAT64_NSEC
+
+#define STAT_IS_KERNEL_STAT 0
+#define STAT64_IS_KERNEL_STAT64 1
+#define XSTAT_IS_XSTAT64 0
+#define STATFS_IS_STATFS64 0
lib/libc/glibc/sysdeps/unix/sysv/linux/sparc/sparc64/kernel_stat.h
@@ -0,0 +1,58 @@
+#ifndef _KERNEL_STAT_H
+#define _KERNEL_STAT_H
+
+/* Definition of `struct stat' used in the kernel */
+struct kernel_stat
+  {
+    unsigned int st_dev;
+    unsigned long int st_ino;
+    unsigned int st_mode;
+    short int st_nlink;
+    unsigned int st_uid;
+    unsigned int st_gid;
+    unsigned int st_rdev;
+    long int st_size;
+    long int st_atime_sec;
+    long int st_mtime_sec;
+    long int st_ctime_sec;
+    long int st_blksize;
+    long int st_blocks;
+    unsigned long int __glibc_reserved1;
+    unsigned long int __glibc_reserved2;
+  };
+
+/* Definition of `struct stat64' used in the kernel.  */
+struct kernel_stat64
+  {
+    unsigned long int st_dev;
+    unsigned long int st_ino;
+    unsigned long int st_nlink;
+
+    unsigned int st_mode;
+    unsigned int st_uid;
+    unsigned int st_gid;
+    unsigned int __pad0;
+
+    unsigned long int st_rdev;
+    long int st_size;
+    long int st_blksize;
+    long int st_blocks;
+
+    unsigned long int st_atime_sec;
+    unsigned long int st_atime_nsec;
+    unsigned long int st_mtime_sec;
+    unsigned long int st_mtime_nsec;
+    unsigned long int st_ctime_sec;
+    unsigned long int st_ctime_nsec;
+    long int __glibc_reserved[3];
+  };
+
+#define STAT_IS_KERNEL_STAT 0
+#define STAT64_IS_KERNEL_STAT64 0
+#define XSTAT_IS_XSTAT64 1
+#ifdef __arch64__
+# define STATFS_IS_STATFS64 1
+#else
+# define STATFS_IS_STATFS64 0
+#endif
+#endif /* _KERNEL_STAT_H  */
lib/libc/glibc/sysdeps/unix/sysv/linux/sparc/sparc64/kstat_cp.h
@@ -0,0 +1,44 @@
+/* Struct kernel_stat64 to stat64.  Linux/SPARC version.
+   Copyright (C) 2020-2021 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, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+
+static inline void
+__cp_stat64_kstat64 (struct stat64 *st64, const struct kernel_stat64 *kst64)
+{
+  st64->st_dev = kst64->st_dev;
+  st64->__pad1 = 0;
+  st64->st_ino = kst64->st_ino;
+  st64->st_mode = kst64->st_mode;
+  st64->st_nlink = kst64->st_nlink;
+  st64->st_uid = kst64->st_uid;
+  st64->st_gid = kst64->st_gid;
+  st64->st_rdev = kst64->st_rdev;
+  st64->__pad2 = 0;
+  st64->st_size = kst64->st_size;
+  st64->st_blksize = kst64->st_blksize;
+  st64->st_blocks = kst64->st_blocks;
+  st64->st_atim.tv_sec = kst64->st_atime_sec;
+  st64->st_atim.tv_nsec = kst64->st_atime_nsec;
+  st64->st_mtim.tv_sec = kst64->st_mtime_sec;
+  st64->st_mtim.tv_nsec = kst64->st_mtime_nsec;
+  st64->st_ctim.tv_sec = kst64->st_ctime_sec;
+  st64->st_ctim.tv_nsec = kst64->st_ctime_nsec;
+  st64->__glibc_reserved4 = 0;
+  st64->__glibc_reserved5 = 0;
+}
lib/libc/glibc/io/fstat.c → lib/libc/glibc/sysdeps/unix/sysv/linux/fstat.c
@@ -1,4 +1,5 @@
-/* Copyright (C) 1996-2021 Free Software Foundation, Inc.
+/* Get file status.  Linux version.
+   Copyright (C) 2020-2021 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
@@ -16,9 +17,11 @@
    <https://www.gnu.org/licenses/>.  */
 
 #include <sys/stat.h>
-#include <errno.h>
+#include <kernel_stat.h>
 #include <fcntl.h>
+#include <errno.h>
 
+#if !XSTAT_IS_XSTAT64
 int
 __fstat (int fd, struct stat *buf)
 {
@@ -31,3 +34,4 @@ __fstat (int fd, struct stat *buf)
 }
 
 weak_alias (__fstat, fstat)
+#endif
lib/libc/glibc/io/fstatat.c → lib/libc/glibc/sysdeps/unix/sysv/linux/fstat64.c
@@ -1,4 +1,5 @@
-/* Copyright (C) 2005-2021 Free Software Foundation, Inc.
+/* Get file status.  Linux version.
+   Copyright (C) 2020-2021 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
@@ -15,28 +16,49 @@
    License along with the GNU C Library; if not, see
    <https://www.gnu.org/licenses/>.  */
 
+#define __fstat __redirect___fstat
+#define fstat   __redirect_fstat
 #include <sys/stat.h>
-#include <errno.h>
 #include <fcntl.h>
+#include <kernel_stat.h>
+#include <stat_t64_cp.h>
+#include <errno.h>
 
 int
-__fstatat (int fd, const char *file, struct stat *buf, int flag)
+__fstat64_time64 (int fd, struct __stat64_t64 *buf)
 {
-  if (fd < 0 && fd != AT_FDCWD)
+  if (fd < 0)
     {
       __set_errno (EBADF);
       return -1;
     }
-  if (buf == 0 || (flag & ~AT_SYMLINK_NOFOLLOW) != 0)
+  return __fstatat64_time64 (fd, "", buf, AT_EMPTY_PATH);
+}
+#if __TIMESIZE != 64
+hidden_def (__fstat64_time64)
+
+int
+__fstat64 (int fd, struct stat64 *buf)
+{
+  if (fd < 0)
     {
-      __set_errno (EINVAL);
+      __set_errno (EBADF);
       return -1;
     }
 
-  __set_errno (ENOSYS);
-  return -1;
+  struct __stat64_t64 st_t64;
+  return __fstat64_time64 (fd, &st_t64)
+	 ?: __cp_stat64_t64_stat64 (&st_t64, buf);
 }
+#endif
+
+#undef __fstat
+#undef fstat
 
-weak_alias (__fstatat, fstatat)
+hidden_def (__fstat64)
+weak_alias (__fstat64, fstat64)
 
-stub_warning (fstatat)
+#if XSTAT_IS_XSTAT64
+strong_alias (__fstat64, __fstat)
+weak_alias (__fstat64, fstat)
+#endif
lib/libc/glibc/sysdeps/unix/sysv/linux/fstatat.c
@@ -0,0 +1,62 @@
+/* Get file status.  Linux version.
+   Copyright (C) 2020-2021 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, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <sys/stat.h>
+#include <kernel_stat.h>
+#include <sysdep.h>
+
+#if !XSTAT_IS_XSTAT64
+# include <kstat_cp.h>
+
+int
+__fstatat (int fd, const char *file, struct stat *buf, int flag)
+{
+  struct __stat64_t64 st64;
+  int r = __fstatat64_time64 (fd, file, &st64, flag);
+  if (r == 0)
+    {
+      if (! in_ino_t_range (st64.st_ino)
+	  || ! in_off_t_range (st64.st_size)
+	  || ! in_blkcnt_t_range (st64.st_blocks)
+	  || ! in_time_t_range (st64.st_atim.tv_sec)
+	  || ! in_time_t_range (st64.st_mtim.tv_sec)
+	  || ! in_time_t_range (st64.st_ctim.tv_sec))
+	return INLINE_SYSCALL_ERROR_RETURN_VALUE (EOVERFLOW);
+
+      /* Clear internal pad and reserved fields.  */
+      memset (buf, 0, sizeof (*buf));
+
+      buf->st_dev = st64.st_dev;
+      buf->st_ino = st64.st_ino;
+      buf->st_mode = st64.st_mode;
+      buf->st_nlink = st64.st_nlink;
+      buf->st_uid = st64.st_uid;
+      buf->st_gid = st64.st_gid;
+      buf->st_rdev = st64.st_rdev;
+      buf->st_size = st64.st_size;
+      buf->st_blksize = st64.st_blksize;
+      buf->st_blocks  = st64.st_blocks;
+      buf->st_atim = valid_timespec64_to_timespec (st64.st_atim);
+      buf->st_mtim = valid_timespec64_to_timespec (st64.st_mtim);
+      buf->st_ctim = valid_timespec64_to_timespec (st64.st_ctim);
+    }
+  return r;
+}
+
+weak_alias (__fstatat, fstatat)
+#endif
lib/libc/glibc/sysdeps/unix/sysv/linux/fstatat64.c
@@ -0,0 +1,188 @@
+/* Get file status.  Linux version.
+   Copyright (C) 2020-2021 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, see
+   <https://www.gnu.org/licenses/>.  */
+
+#define __fstatat __redirect___fstatat
+#define fstatat   __redirect_fstatat
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <string.h>
+#include <kernel_stat.h>
+#include <sysdep.h>
+#include <time.h>
+#include <kstat_cp.h>
+#include <stat_t64_cp.h>
+#include <sys/sysmacros.h>
+
+#if __TIMESIZE == 64 \
+     && (__WORDSIZE == 32 \
+     && (!defined __SYSCALL_WORDSIZE || __SYSCALL_WORDSIZE == 32))
+/* Sanity check to avoid newer 32-bit ABI to support non-LFS calls.  */
+_Static_assert (sizeof (__off_t) == sizeof (__off64_t),
+                "__blkcnt_t and __blkcnt64_t must match");
+_Static_assert (sizeof (__ino_t) == sizeof (__ino64_t),
+                "__blkcnt_t and __blkcnt64_t must match");
+_Static_assert (sizeof (__blkcnt_t) == sizeof (__blkcnt64_t),
+                "__blkcnt_t and __blkcnt64_t must match");
+#endif
+
+static inline int
+fstatat64_time64_statx (int fd, const char *file, struct __stat64_t64 *buf,
+			int flag)
+{
+  /* 32-bit kABI with default 64-bit time_t, e.g. arc, riscv32.   Also
+     64-bit time_t support is done through statx syscall.  */
+  struct statx tmp;
+  int r = INTERNAL_SYSCALL_CALL (statx, fd, file, AT_NO_AUTOMOUNT | flag,
+				 STATX_BASIC_STATS, &tmp);
+  if (r != 0)
+    return r;
+
+  *buf = (struct __stat64_t64) {
+    .st_dev = __gnu_dev_makedev (tmp.stx_dev_major, tmp.stx_dev_minor),
+    .st_rdev = __gnu_dev_makedev (tmp.stx_rdev_major, tmp.stx_rdev_minor),
+    .st_ino = tmp.stx_ino,
+    .st_mode = tmp.stx_mode,
+    .st_nlink = tmp.stx_nlink,
+    .st_uid = tmp.stx_uid,
+    .st_gid = tmp.stx_gid,
+    .st_atime = tmp.stx_atime.tv_sec,
+    .st_atim.tv_nsec = tmp.stx_atime.tv_nsec,
+    .st_mtime = tmp.stx_mtime.tv_sec,
+    .st_mtim.tv_nsec = tmp.stx_mtime.tv_nsec,
+    .st_ctime = tmp.stx_ctime.tv_sec,
+    .st_ctim.tv_nsec = tmp.stx_ctime.tv_nsec,
+    .st_size = tmp.stx_size,
+    .st_blocks = tmp.stx_blocks,
+    .st_blksize = tmp.stx_blksize,
+  };
+
+  return r;
+}
+
+static inline int
+fstatat64_time64_stat (int fd, const char *file, struct __stat64_t64 *buf,
+		       int flag)
+{
+  int r;
+
+#if XSTAT_IS_XSTAT64
+# ifdef __NR_newfstatat
+  /* 64-bit kABI, e.g. aarch64, ia64, powerpc64*, s390x, riscv64, and
+     x86_64.  */
+  r = INTERNAL_SYSCALL_CALL (newfstatat, fd, file, buf, flag);
+# elif defined __NR_fstatat64
+#  if STAT64_IS_KERNEL_STAT64
+  /* 64-bit kABI outlier, e.g. alpha  */
+  r = INTERNAL_SYSCALL_CALL (fstatat64, fd, file, buf, flag);
+#  else
+  /* 64-bit kABI outlier, e.g. sparc64.  */
+  struct kernel_stat64 kst64;
+  r = INTERNAL_SYSCALL_CALL (fstatat64, fd, file, &kst64, flag);
+  if (r == 0)
+    __cp_stat64_kstat64 (buf, &kst64);
+#  endif
+# endif
+#else
+# ifdef __NR_fstatat64
+  /* All kABIs with non-LFS support and with old 32-bit time_t support
+     e.g. arm, csky, i386, hppa, m68k, microblaze, nios2, sh, powerpc32,
+     and sparc32.  */
+  struct stat64 st64;
+  r = INTERNAL_SYSCALL_CALL (fstatat64, fd, file, &st64, flag);
+  if (r == 0)
+    {
+      /* Clear both pad and reserved fields.  */
+      memset (buf, 0, sizeof (*buf));
+
+      buf->st_dev = st64.st_dev,
+      buf->st_ino = st64.st_ino;
+      buf->st_mode = st64.st_mode;
+      buf->st_nlink = st64.st_nlink;
+      buf->st_uid = st64.st_uid;
+      buf->st_gid = st64.st_gid;
+      buf->st_rdev = st64.st_rdev;
+      buf->st_size = st64.st_size;
+      buf->st_blksize = st64.st_blksize;
+      buf->st_blocks  = st64.st_blocks;
+      buf->st_atim = valid_timespec_to_timespec64 (st64.st_atim);
+      buf->st_mtim = valid_timespec_to_timespec64 (st64.st_mtim);
+      buf->st_ctim = valid_timespec_to_timespec64 (st64.st_ctim);
+    }
+# else
+  /* 64-bit kabi outlier, e.g. mips64 and mips64-n32.  */
+  struct kernel_stat kst;
+  r = INTERNAL_SYSCALL_CALL (newfstatat, fd, file, &kst, flag);
+  if (r == 0)
+    __cp_kstat_stat64_t64 (&kst, buf);
+# endif
+#endif
+
+  return r;
+}
+
+#if (__WORDSIZE == 32 \
+     && (!defined __SYSCALL_WORDSIZE || __SYSCALL_WORDSIZE == 32)) \
+     || defined STAT_HAS_TIME32
+# define FSTATAT_USE_STATX 1
+#else
+# define FSTATAT_USE_STATX 0
+#endif
+
+int
+__fstatat64_time64 (int fd, const char *file, struct __stat64_t64 *buf,
+		    int flag)
+{
+  int r;
+
+#if FSTATAT_USE_STATX
+  r = fstatat64_time64_statx (fd, file, buf, flag);
+# ifndef __ASSUME_STATX
+  if (r == -ENOSYS)
+    r = fstatat64_time64_stat (fd, file, buf, flag);
+# endif
+#else
+  r = fstatat64_time64_stat (fd, file, buf, flag);
+#endif
+
+  return INTERNAL_SYSCALL_ERROR_P (r)
+	 ? INLINE_SYSCALL_ERROR_RETURN_VALUE (-r)
+	 : 0;
+}
+#if __TIMESIZE != 64
+hidden_def (__fstatat64_time64)
+
+int
+__fstatat64 (int fd, const char *file, struct stat64 *buf, int flags)
+{
+  struct __stat64_t64 st_t64;
+  return __fstatat64_time64 (fd, file, &st_t64, flags)
+	 ?: __cp_stat64_t64_stat64 (&st_t64, buf);
+}
+#endif
+
+#undef __fstatat
+#undef fstatat
+
+hidden_def (__fstatat64)
+weak_alias (__fstatat64, fstatat64)
+
+#if XSTAT_IS_XSTAT64
+strong_alias (__fstatat64, __fstatat)
+weak_alias (__fstatat64, fstatat)
+strong_alias (__fstatat64, __GI___fstatat);
+#endif
lib/libc/glibc/io/stat64.c → lib/libc/glibc/sysdeps/unix/sysv/linux/kernel_stat.h
@@ -1,4 +1,5 @@
-/* Copyright (C) 1996-2021 Free Software Foundation, Inc.
+/* Internal definitions for stat functions.
+   Copyright (C) 2021 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
@@ -15,13 +16,7 @@
    License along with the GNU C Library; if not, see
    <https://www.gnu.org/licenses/>.  */
 
-#include <sys/stat.h>
-#include <fcntl.h>
-
-int
-__stat64 (const char *file, struct stat64 *buf)
-{
-  return __fstatat64 (AT_FDCWD, file, buf, 0);
-}
-hidden_def (__stat64)
-weak_alias (__stat64, stat64)
+/* The default Linux ABI assumes only LFS support.  */
+#define XSTAT_IS_XSTAT64     1
+#define STATFS_IS_STATFS64   __STATFS_MATCHES_STATFS64
+#define STAT_IS_KERNEL_STAT  1
lib/libc/glibc/sysdeps/unix/sysv/linux/kstat_cp.h
@@ -0,0 +1,2 @@
+/* Empty, it is overridden by an architecture which might require copy to or
+   from a kernel_stat stat struct to glibc export stat{64}.  */
lib/libc/glibc/io/lstat.c → lib/libc/glibc/sysdeps/unix/sysv/linux/lstat.c
@@ -1,4 +1,5 @@
-/* Copyright (C) 1996-2021 Free Software Foundation, Inc.
+/* Get file status.  Linux version.
+   Copyright (C) 2020-2021 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
@@ -17,7 +18,9 @@
 
 #include <sys/stat.h>
 #include <fcntl.h>
+#include <kernel_stat.h>
 
+#if !XSTAT_IS_XSTAT64
 int
 __lstat (const char *file, struct stat *buf)
 {
@@ -25,3 +28,4 @@ __lstat (const char *file, struct stat *buf)
 }
 
 weak_alias (__lstat, lstat)
+#endif
lib/libc/glibc/sysdeps/unix/sysv/linux/lstat64.c
@@ -0,0 +1,51 @@
+/* Get file status.
+   Copyright (C) 1996-2021 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, see
+   <https://www.gnu.org/licenses/>.  */
+
+#define __lstat __redirect___lstat
+#define lstat   __redirect_lstat
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <kernel_stat.h>
+#include <stat_t64_cp.h>
+
+int
+__lstat64_time64 (const char *file, struct __stat64_t64 *buf)
+{
+  return __fstatat64_time64 (AT_FDCWD, file, buf, AT_SYMLINK_NOFOLLOW);
+}
+#if __TIMESIZE != 64
+hidden_def (__lstat64_time64)
+
+int
+__lstat64 (const char *file, struct stat64 *buf)
+{
+  struct __stat64_t64 st_t64;
+  return __lstat64_time64 (file, &st_t64)
+	 ?: __cp_stat64_t64_stat64 (&st_t64, buf);
+}
+#endif
+hidden_def (__lstat64)
+weak_alias (__lstat64, lstat64)
+
+#undef __lstat
+#undef lstat
+
+#if XSTAT_IS_XSTAT64
+strong_alias (__lstat64, __lstat)
+weak_alias (__lstat64, lstat)
+#endif
lib/libc/glibc/io/mknodat.c → lib/libc/glibc/sysdeps/unix/sysv/linux/mknodat.c
@@ -1,4 +1,5 @@
-/* Copyright (C) 1995-2021 Free Software Foundation, Inc.
+/* Create a special or ordinary file.  Linux version.
+   Copyright (C) 2020-2021 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
@@ -18,14 +19,18 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <errno.h>
+#include <sysdep.h>
 
 int
 __mknodat (int fd, const char *path, mode_t mode, dev_t dev)
 {
-  __set_errno (ENOSYS);
-  return -1;
+  /* The user-exported dev_t is 64-bit while the kernel interface is
+     32-bit.  */
+  unsigned int k_dev = dev;
+  if (k_dev != dev)
+    return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
+
+  return INLINE_SYSCALL_CALL (mknodat, fd, path, mode, k_dev);
 }
 libc_hidden_def (__mknodat)
 weak_alias (__mknodat, mknodat)
-
-stub_warning (mknodat)
lib/libc/glibc/io/stat.c → lib/libc/glibc/sysdeps/unix/sysv/linux/stat.c
@@ -1,4 +1,5 @@
-/* Copyright (C) 1996-2021 Free Software Foundation, Inc.
+/* Get file status.  Linux version.
+   Copyright (C) 2020-2021 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
@@ -17,7 +18,9 @@
 
 #include <sys/stat.h>
 #include <fcntl.h>
+#include <kernel_stat.h>
 
+#if !XSTAT_IS_XSTAT64
 int
 __stat (const char *file, struct stat *buf)
 {
@@ -25,3 +28,4 @@ __stat (const char *file, struct stat *buf)
 }
 
 weak_alias (__stat, stat)
+#endif
lib/libc/glibc/io/fstatat64.c → lib/libc/glibc/sysdeps/unix/sysv/linux/stat64.c
@@ -1,4 +1,5 @@
-/* Copyright (C) 2005-2021 Free Software Foundation, Inc.
+/* Get file status.  Linux version.
+   Copyright (C) 2020-2021 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
@@ -15,28 +16,37 @@
    License along with the GNU C Library; if not, see
    <https://www.gnu.org/licenses/>.  */
 
+#define __stat __redirect___stat
+#define stat   __redirect_stat
 #include <sys/stat.h>
-#include <errno.h>
 #include <fcntl.h>
+#include <kernel_stat.h>
+#include <stat_t64_cp.h>
 
 int
-__fstatat64 (int fd, const char *file, struct stat64 *buf, int flag)
+__stat64_time64 (const char *file, struct __stat64_t64 *buf)
 {
-  if (fd < 0 && fd != AT_FDCWD)
-    {
-      __set_errno (EBADF);
-      return -1;
-    }
-  if (buf == 0 || (flag & ~AT_SYMLINK_NOFOLLOW) != 0)
-    {
-      __set_errno (EINVAL);
-      return -1;
-    }
-
-  __set_errno (ENOSYS);
-  return -1;
+  return __fstatat64_time64 (AT_FDCWD, file, buf, 0);
 }
-hidden_def (__fstatat64)
-weak_alias (__fstatat64, fstatat64)
+#if __TIMESIZE != 64
+hidden_def (__stat64_time64)
 
-stub_warning (fstatat64)
+int
+__stat64 (const char *file, struct stat64 *buf)
+{
+  struct __stat64_t64 st_t64;
+  return __stat64_time64 (file, &st_t64)
+	 ?: __cp_stat64_t64_stat64 (&st_t64, buf);
+}
+#endif
+
+#undef __stat
+#undef stat
+
+hidden_def (__stat64)
+weak_alias (__stat64, stat64)
+
+#if XSTAT_IS_XSTAT64
+strong_alias (__stat64, __stat)
+weak_alias (__stat64, stat)
+#endif
lib/libc/glibc/io/lstat64.c → lib/libc/glibc/sysdeps/unix/sysv/linux/stat_t64_cp.h
@@ -1,4 +1,5 @@
-/* Copyright (C) 1996-2021 Free Software Foundation, Inc.
+/* Copy to/from struct stat with and without 64-bit time_t support.
+   Copyright (C) 2020-2021 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
@@ -12,16 +13,13 @@
    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
+   License along with the GNU C Library.  If not, see
    <https://www.gnu.org/licenses/>.  */
 
 #include <sys/stat.h>
-#include <fcntl.h>
 
-int
-__lstat64 (const char *file, struct stat64 *buf)
-{
-  return __fstatat64 (AT_FDCWD, file, buf, AT_SYMLINK_NOFOLLOW);
-}
-hidden_def (__lstat64)
-weak_alias (__lstat64, lstat64)
+#if __TIMESIZE != 64
+extern int __cp_stat64_t64_stat64 (const struct __stat64_t64 *st64_t64,
+				   struct stat64 *st64)
+  attribute_hidden;
+#endif
src/glibc.zig
@@ -269,23 +269,25 @@ pub fn buildCRTFile(comp: *Compilation, crt_file: CRTFile) !void {
             return comp.build_crt_file("Scrt1", .Obj, &[_]Compilation.CSourceFile{ start_os, abi_note_o });
         },
         .libc_nonshared_a => {
+            const s = path.sep_str;
+            const linux_prefix = lib_libc_glibc ++
+                "sysdeps" ++ s ++ "unix" ++ s ++ "sysv" ++ s ++ "linux" ++ s;
             const deps = [_][]const u8{
-                lib_libc_glibc ++ "stdlib" ++ path.sep_str ++ "atexit.c",
-                lib_libc_glibc ++ "stdlib" ++ path.sep_str ++ "at_quick_exit.c",
-                lib_libc_glibc ++ "io" ++ path.sep_str ++ "stat.c",
-                lib_libc_glibc ++ "io" ++ path.sep_str ++ "fstat.c",
-                lib_libc_glibc ++ "io" ++ path.sep_str ++ "lstat.c",
-                lib_libc_glibc ++ "io" ++ path.sep_str ++ "stat64.c",
-                lib_libc_glibc ++ "io" ++ path.sep_str ++ "fstat64.c",
-                lib_libc_glibc ++ "io" ++ path.sep_str ++ "lstat64.c",
-                lib_libc_glibc ++ "io" ++ path.sep_str ++ "fstatat.c",
-                lib_libc_glibc ++ "io" ++ path.sep_str ++ "fstatat64.c",
-                lib_libc_glibc ++ "io" ++ path.sep_str ++ "mknod.c",
-                lib_libc_glibc ++ "io" ++ path.sep_str ++ "mknodat.c",
-                lib_libc_glibc ++ "sysdeps" ++ path.sep_str ++ "pthread" ++ path.sep_str ++
-                    "pthread_atfork.c",
-                lib_libc_glibc ++ "debug" ++ path.sep_str ++ "stack_chk_fail_local.c",
-                lib_libc_glibc ++ "csu" ++ path.sep_str ++ "errno.c",
+                lib_libc_glibc ++ "stdlib" ++ s ++ "atexit.c",
+                lib_libc_glibc ++ "stdlib" ++ s ++ "at_quick_exit.c",
+                linux_prefix ++ "stat.c",
+                linux_prefix ++ "fstat.c",
+                linux_prefix ++ "lstat.c",
+                linux_prefix ++ "stat64.c",
+                linux_prefix ++ "fstat64.c",
+                linux_prefix ++ "lstat64.c",
+                linux_prefix ++ "fstatat.c",
+                linux_prefix ++ "fstatat64.c",
+                linux_prefix ++ "mknodat.c",
+                lib_libc_glibc ++ "io" ++ s ++ "mknod.c",
+                lib_libc_glibc ++ "sysdeps" ++ s ++ "pthread" ++ s ++ "pthread_atfork.c",
+                lib_libc_glibc ++ "debug" ++ s ++ "stack_chk_fail_local.c",
+                lib_libc_glibc ++ "csu" ++ s ++ "errno.c",
             };
 
             var c_source_files: [deps.len]Compilation.CSourceFile = undefined;