diff mbox series

[05/10] linux: Consolidate statfs implementations

Message ID 20210208214936.1502047-6-adhemerval.zanella@linaro.org
State Committed
Commit f6e616435d885afef1761a407ed0ae1256293bf8
Delegated to: Carlos O'Donell
Headers show
Series stat[fs,vfs] consolidation | expand

Commit Message

Adhemerval Zanella Feb. 8, 2021, 9:49 p.m. UTC
The __NR_statfs64 syscall is supported on all architectures but
aarch64, mips64, riscv64, and x86_64.  And newer ABIs also uses
the new statfs64 interface (where the struct size is used as
second argument).

So the default implementation now uses:

  1. __NR_statfs64 for non-LFS call and handle overflow directly
     There is no need to handle __NR_statfs since all architecture
     that only support is are LFS only.

  2. __NR_statfs if defined or __NR_statfs64 otherwise for LFS
     call.

Alpha is the only outlier, since it is a 64-bit architecture which
provides non-LFS interface and only provides __NR_fstatfs64 on
newer kernels.

Checked on x86_64-linux-gnu.
---
 .../{generic/wordsize-32 => alpha}/statfs.c   | 16 ++---
 sysdeps/unix/sysv/linux/alpha/statfs64.c      | 52 +++++++++++++-
 sysdeps/unix/sysv/linux/alpha/syscalls.list   |  3 -
 .../sysv/linux/mips/mips64/n64/statfs64.c     |  1 -
 .../sysv/linux/mips/mips64/n64/syscalls.list  |  2 -
 sysdeps/unix/sysv/linux/statfs.c              | 61 ++++++++++++++++
 sysdeps/unix/sysv/linux/statfs64.c            | 69 +++----------------
 .../unix/sysv/linux/wordsize-64/statfs64.c    |  1 -
 .../unix/sysv/linux/wordsize-64/syscalls.list |  1 -
 9 files changed, 125 insertions(+), 81 deletions(-)
 rename sysdeps/unix/sysv/linux/{generic/wordsize-32 => alpha}/statfs.c (72%)
 delete mode 100644 sysdeps/unix/sysv/linux/mips/mips64/n64/statfs64.c
 create mode 100644 sysdeps/unix/sysv/linux/statfs.c
 delete mode 100644 sysdeps/unix/sysv/linux/wordsize-64/statfs64.c

Comments

Carlos O'Donell Feb. 11, 2021, 12:38 a.m. UTC | #1
On 2/8/21 4:49 PM, Adhemerval Zanella via Libc-alpha wrote:
> The __NR_statfs64 syscall is supported on all architectures but
> aarch64, mips64, riscv64, and x86_64.  And newer ABIs also uses
> the new statfs64 interface (where the struct size is used as
> second argument).
> 
> So the default implementation now uses:
> 
>   1. __NR_statfs64 for non-LFS call and handle overflow directly
>      There is no need to handle __NR_statfs since all architecture
>      that only support is are LFS only.

OK.

>   2. __NR_statfs if defined or __NR_statfs64 otherwise for LFS
>      call.

OK.

> Alpha is the only outlier, since it is a 64-bit architecture which
> provides non-LFS interface and only provides __NR_fstatfs64 on
> newer kernels.

OK.

LGTM.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>

> Checked on x86_64-linux-gnu.
> ---
>  .../{generic/wordsize-32 => alpha}/statfs.c   | 16 ++---
>  sysdeps/unix/sysv/linux/alpha/statfs64.c      | 52 +++++++++++++-
>  sysdeps/unix/sysv/linux/alpha/syscalls.list   |  3 -
>  .../sysv/linux/mips/mips64/n64/statfs64.c     |  1 -
>  .../sysv/linux/mips/mips64/n64/syscalls.list  |  2 -
>  sysdeps/unix/sysv/linux/statfs.c              | 61 ++++++++++++++++
>  sysdeps/unix/sysv/linux/statfs64.c            | 69 +++----------------
>  .../unix/sysv/linux/wordsize-64/statfs64.c    |  1 -
>  .../unix/sysv/linux/wordsize-64/syscalls.list |  1 -
>  9 files changed, 125 insertions(+), 81 deletions(-)
>  rename sysdeps/unix/sysv/linux/{generic/wordsize-32 => alpha}/statfs.c (72%)
>  delete mode 100644 sysdeps/unix/sysv/linux/mips/mips64/n64/statfs64.c
>  create mode 100644 sysdeps/unix/sysv/linux/statfs.c
>  delete mode 100644 sysdeps/unix/sysv/linux/wordsize-64/statfs64.c
> 
> diff --git a/sysdeps/unix/sysv/linux/generic/wordsize-32/statfs.c b/sysdeps/unix/sysv/linux/alpha/statfs.c
> similarity index 72%
> rename from sysdeps/unix/sysv/linux/generic/wordsize-32/statfs.c
> rename to sysdeps/unix/sysv/linux/alpha/statfs.c
> index 2c51fbf1b0..33789768ed 100644
> --- a/sysdeps/unix/sysv/linux/generic/wordsize-32/statfs.c
> +++ b/sysdeps/unix/sysv/linux/alpha/statfs.c
> @@ -1,6 +1,6 @@
> -/* Copyright (C) 2011-2021 Free Software Foundation, Inc.
> +/* Return information about the filesystem on which FILE resides.  Linux/alpha.
> +   Copyright (C) 1996-2021 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
> @@ -13,24 +13,18 @@
>     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 <errno.h>
>  #include <sys/statfs.h>
> -#include <kernel_stat.h>
>  #include <sysdep.h>
> -
> -#if !STATFS_IS_STATFS64
> -#include "overflow.h"
> +#include <kernel_stat.h>
>  
>  /* Return information about the filesystem on which FILE resides.  */
>  int
>  __statfs (const char *file, struct statfs *buf)
>  {
> -  int rc = INLINE_SYSCALL (statfs64, 3, file, sizeof (*buf), buf);
> -  return rc ?: statfs_overflow (buf);
> +  return INLINE_SYSCALL_CALL (statfs, file, buf);
>  }
>  libc_hidden_def (__statfs)
>  weak_alias (__statfs, statfs)
> -#endif
> diff --git a/sysdeps/unix/sysv/linux/alpha/statfs64.c b/sysdeps/unix/sysv/linux/alpha/statfs64.c
> index fe39cc4685..083b9a59f3 100644
> --- a/sysdeps/unix/sysv/linux/alpha/statfs64.c
> +++ b/sysdeps/unix/sysv/linux/alpha/statfs64.c
> @@ -1 +1,51 @@
> -#include <sysdeps/unix/sysv/linux/statfs64.c>
> +/* Return information about the filesystem on which FILE resides.  Linux/alpha.
> +   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/>.  */
> +
> +#include <sys/statfs.h>
> +#include <sysdep.h>
> +#include <kernel_stat.h>
> +
> +/* Return information about the filesystem on which FILE resides.  */
> +int
> +__statfs64 (const char *file, struct statfs64 *buf)
> +{
> +  int r = INLINE_SYSCALL_CALL (statfs64, file, sizeof (*buf), buf);
> +#if __ASSUME_STATFS64 == 0
> +  if (r == -1 && errno == ENOSYS)
> +    {
> +      struct statfs buf32;
> +      if (__statfs (file, &buf32) < 0)
> +	return -1;
> +
> +      buf->f_type = buf32.f_type;
> +      buf->f_bsize = buf32.f_bsize;
> +      buf->f_blocks = buf32.f_blocks;
> +      buf->f_bfree = buf32.f_bfree;
> +      buf->f_bavail = buf32.f_bavail;
> +      buf->f_files = buf32.f_files;
> +      buf->f_ffree = buf32.f_ffree;
> +      buf->f_fsid = buf32.f_fsid;
> +      buf->f_namelen = buf32.f_namelen;
> +      buf->f_frsize = buf32.f_frsize;
> +      buf->f_flags = buf32.f_flags;
> +      memcpy (buf->f_spare, buf32.f_spare, sizeof (buf32.f_spare));
> +    }
> +#endif
> +  return r;
> +}
> +weak_alias (__statfs64, statfs64)
> diff --git a/sysdeps/unix/sysv/linux/alpha/syscalls.list b/sysdeps/unix/sysv/linux/alpha/syscalls.list
> index 8cb588cb2c..c848fcbd99 100644
> --- a/sysdeps/unix/sysv/linux/alpha/syscalls.list
> +++ b/sysdeps/unix/sysv/linux/alpha/syscalls.list
> @@ -27,6 +27,3 @@ getitimer	-	getitimer	i:ip	__getitimer	getitimer@@GLIBC_2.1
>  setitimer	-	setitimer	i:ipP	__setitimer	setitimer@@GLIBC_2.1
>  utimes		-	utimes		i:sp	__utimes	utimes@@GLIBC_2.1
>  getrusage	-	getrusage	i:ip	__getrusage	getrusage@@GLIBC_2.1
> -
> -# avoid 64-bit aliases on 32-bit statfs syscalls
> -statfs		-	statfs		i:sp	__statfs	statfs
> diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/statfs64.c b/sysdeps/unix/sysv/linux/mips/mips64/n64/statfs64.c
> deleted file mode 100644
> index 6e25b021ab..0000000000
> --- a/sysdeps/unix/sysv/linux/mips/mips64/n64/statfs64.c
> +++ /dev/null
> @@ -1 +0,0 @@
> -/* Empty.  */
> diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list b/sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list
> index b6a0c92829..e4e16dfa49 100644
> --- a/sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list
> +++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list
> @@ -4,6 +4,4 @@ prlimit		EXTRA	prlimit64	i:iipp	prlimit		prlimit64
>  
>  fanotify_mark	EXTRA	fanotify_mark	i:iiiis	fanotify_mark
>  
> -statfs		-	statfs		i:sp	__statfs	statfs statfs64 __statfs64
> -
>  sendfile	-	sendfile	i:iipi	sendfile	sendfile64
> diff --git a/sysdeps/unix/sysv/linux/statfs.c b/sysdeps/unix/sysv/linux/statfs.c
> new file mode 100644
> index 0000000000..ee248b4212
> --- /dev/null
> +++ b/sysdeps/unix/sysv/linux/statfs.c
> @@ -0,0 +1,61 @@
> +/* Copyright (C) 2011-2021 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/>.  */
> +
> +#include <sys/statfs.h>
> +#include <time.h>
> +#include <sysdep.h>
> +#include <kernel_stat.h>
> +
> +#if !STATFS_IS_STATFS64
> +
> +/* Return information about the filesystem on which FILE resides.  */
> +int
> +__statfs (const char *file, struct statfs *buf)
> +{
> +  struct statfs64 buf64;
> +  int rc = INLINE_SYSCALL_CALL (statfs64, file, sizeof (buf64), &buf64);
> +  if (rc == 0)
> +    {
> +      buf->f_type = buf64.f_type;
> +      buf->f_bsize = buf64.f_bsize;
> +      buf->f_blocks = buf64.f_blocks;
> +      buf->f_bfree = buf64.f_bfree;
> +      buf->f_bavail = buf64.f_bavail;
> +      buf->f_files = buf64.f_files;
> +      buf->f_ffree = buf64.f_ffree;
> +      buf->f_fsid = buf64.f_fsid;
> +      buf->f_namelen = buf64.f_namelen;
> +      buf->f_frsize = buf64.f_frsize;
> +      buf->f_flags = buf64.f_flags;
> +      memcpy (buf->f_spare, buf64.f_spare, sizeof (buf64.f_spare));
> +
> +      if ((fsblkcnt_t) buf64.f_blocks != buf64.f_blocks
> +	  || (fsblkcnt_t) buf64.f_bfree != buf64.f_bfree
> +	  || (fsblkcnt_t) buf64.f_bavail != buf64.f_bavail
> +	  || (fsblkcnt_t) buf64.f_files != buf64.f_files
> +	  || (fsblkcnt_t) buf64.f_ffree != buf64.f_ffree)
> +	{
> +	  __set_errno (EOVERFLOW);
> +	  return -1;
> +	}
> +    }
> +  return rc;
> +}
> +libc_hidden_def (__statfs)
> +weak_alias (__statfs, statfs)
> +#endif
> diff --git a/sysdeps/unix/sysv/linux/statfs64.c b/sysdeps/unix/sysv/linux/statfs64.c
> index c52b3d8ae6..4f68212e9f 100644
> --- a/sysdeps/unix/sysv/linux/statfs64.c
> +++ b/sysdeps/unix/sysv/linux/statfs64.c
> @@ -16,79 +16,26 @@
>     License along with the GNU C Library; if not, see
>     <https://www.gnu.org/licenses/>.  */
>  
> -#include <errno.h>
> -#include <string.h>
> -#include <stddef.h>
> +#define __statfs __statfs_disable
> +#define statfs statfs_disable
> +#include <sys/statfs.h>
>  #include <sysdep.h>
>  #include <kernel_stat.h>
> -
> -/* Hide the prototypes for __statfs and statfs so that GCC will not
> -   complain about the different function signatures if they are aliased
> -   to  __stat64.  If STATFS_IS_STATFS64 is not zero then the statfs and
> -   statfs64 structures have an identical layout but different type names.  */
> -
> -#if STATFS_IS_STATFS64
> -# define __statfs __statfs_disable
> -# define statfs statfs_disable
> -#endif
> -#include <sys/statfs.h>
> -
> -#include <kernel-features.h>
> -
> -
> -# if __ASSUME_STATFS64 == 0
> -int __no_statfs64 attribute_hidden;
> -#endif
> +#undef __statfs
> +#undef statfs
>  
>  /* Return information about the filesystem on which FILE resides.  */
>  int
>  __statfs64 (const char *file, struct statfs64 *buf)
>  {
>  #ifdef __NR_statfs64
> -# if __ASSUME_STATFS64 == 0
> -  if (! __no_statfs64)
> -# endif
> -    {
> -      int result = INLINE_SYSCALL (statfs64, 3, file, sizeof (*buf), buf);
> -
> -# if __ASSUME_STATFS64 == 0
> -      if (result == 0 || errno != ENOSYS)
> -# endif
> -	return result;
> -
> -# if __ASSUME_STATFS64 == 0
> -      __no_statfs64 = 1;
> -# endif
> -    }
> -#endif
> -
> -#if __ASSUME_STATFS64 == 0
> -  struct statfs buf32;
> -
> -  if (__statfs (file, &buf32) < 0)
> -    return -1;
> -
> -  buf->f_type = buf32.f_type;
> -  buf->f_bsize = buf32.f_bsize;
> -  buf->f_blocks = buf32.f_blocks;
> -  buf->f_bfree = buf32.f_bfree;
> -  buf->f_bavail = buf32.f_bavail;
> -  buf->f_files = buf32.f_files;
> -  buf->f_ffree = buf32.f_ffree;
> -  buf->f_fsid = buf32.f_fsid;
> -  buf->f_namelen = buf32.f_namelen;
> -  buf->f_frsize = buf32.f_frsize;
> -  buf->f_flags = buf32.f_flags;
> -  memcpy (buf->f_spare, buf32.f_spare, sizeof (buf32.f_spare));
> -
> -  return 0;
> +  return INLINE_SYSCALL_CALL (statfs64, file, sizeof (*buf), buf);
> +#else
> +  return INLINE_SYSCALL_CALL (statfs, file, buf);
>  #endif
>  }
>  weak_alias (__statfs64, statfs64)
>  
> -#undef __statfs
> -#undef statfs
> -
>  #if STATFS_IS_STATFS64
>  weak_alias (__statfs64, __statfs)
>  weak_alias (__statfs64, statfs)
> diff --git a/sysdeps/unix/sysv/linux/wordsize-64/statfs64.c b/sysdeps/unix/sysv/linux/wordsize-64/statfs64.c
> deleted file mode 100644
> index 06bc68826f..0000000000
> --- a/sysdeps/unix/sysv/linux/wordsize-64/statfs64.c
> +++ /dev/null
> @@ -1 +0,0 @@
> -/* statfs64 is the same as statfs. */
> diff --git a/sysdeps/unix/sysv/linux/wordsize-64/syscalls.list b/sysdeps/unix/sysv/linux/wordsize-64/syscalls.list
> index 5a0c910847..68e3c60536 100644
> --- a/sysdeps/unix/sysv/linux/wordsize-64/syscalls.list
> +++ b/sysdeps/unix/sysv/linux/wordsize-64/syscalls.list
> @@ -1,6 +1,5 @@
>  # File name	Caller	Syscall name	# args	Strong name	Weak names
>  
> -statfs		-	statfs		i:sp	__statfs	statfs statfs64
>  sendfile	-	sendfile	i:iipi	sendfile	sendfile64
>  prlimit		EXTRA	prlimit64	i:iipp	prlimit		prlimit64
>  
>
diff mbox series

Patch

diff --git a/sysdeps/unix/sysv/linux/generic/wordsize-32/statfs.c b/sysdeps/unix/sysv/linux/alpha/statfs.c
similarity index 72%
rename from sysdeps/unix/sysv/linux/generic/wordsize-32/statfs.c
rename to sysdeps/unix/sysv/linux/alpha/statfs.c
index 2c51fbf1b0..33789768ed 100644
--- a/sysdeps/unix/sysv/linux/generic/wordsize-32/statfs.c
+++ b/sysdeps/unix/sysv/linux/alpha/statfs.c
@@ -1,6 +1,6 @@ 
-/* Copyright (C) 2011-2021 Free Software Foundation, Inc.
+/* Return information about the filesystem on which FILE resides.  Linux/alpha.
+   Copyright (C) 1996-2021 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
@@ -13,24 +13,18 @@ 
    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 <errno.h>
 #include <sys/statfs.h>
-#include <kernel_stat.h>
 #include <sysdep.h>
-
-#if !STATFS_IS_STATFS64
-#include "overflow.h"
+#include <kernel_stat.h>
 
 /* Return information about the filesystem on which FILE resides.  */
 int
 __statfs (const char *file, struct statfs *buf)
 {
-  int rc = INLINE_SYSCALL (statfs64, 3, file, sizeof (*buf), buf);
-  return rc ?: statfs_overflow (buf);
+  return INLINE_SYSCALL_CALL (statfs, file, buf);
 }
 libc_hidden_def (__statfs)
 weak_alias (__statfs, statfs)
-#endif
diff --git a/sysdeps/unix/sysv/linux/alpha/statfs64.c b/sysdeps/unix/sysv/linux/alpha/statfs64.c
index fe39cc4685..083b9a59f3 100644
--- a/sysdeps/unix/sysv/linux/alpha/statfs64.c
+++ b/sysdeps/unix/sysv/linux/alpha/statfs64.c
@@ -1 +1,51 @@ 
-#include <sysdeps/unix/sysv/linux/statfs64.c>
+/* Return information about the filesystem on which FILE resides.  Linux/alpha.
+   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/>.  */
+
+#include <sys/statfs.h>
+#include <sysdep.h>
+#include <kernel_stat.h>
+
+/* Return information about the filesystem on which FILE resides.  */
+int
+__statfs64 (const char *file, struct statfs64 *buf)
+{
+  int r = INLINE_SYSCALL_CALL (statfs64, file, sizeof (*buf), buf);
+#if __ASSUME_STATFS64 == 0
+  if (r == -1 && errno == ENOSYS)
+    {
+      struct statfs buf32;
+      if (__statfs (file, &buf32) < 0)
+	return -1;
+
+      buf->f_type = buf32.f_type;
+      buf->f_bsize = buf32.f_bsize;
+      buf->f_blocks = buf32.f_blocks;
+      buf->f_bfree = buf32.f_bfree;
+      buf->f_bavail = buf32.f_bavail;
+      buf->f_files = buf32.f_files;
+      buf->f_ffree = buf32.f_ffree;
+      buf->f_fsid = buf32.f_fsid;
+      buf->f_namelen = buf32.f_namelen;
+      buf->f_frsize = buf32.f_frsize;
+      buf->f_flags = buf32.f_flags;
+      memcpy (buf->f_spare, buf32.f_spare, sizeof (buf32.f_spare));
+    }
+#endif
+  return r;
+}
+weak_alias (__statfs64, statfs64)
diff --git a/sysdeps/unix/sysv/linux/alpha/syscalls.list b/sysdeps/unix/sysv/linux/alpha/syscalls.list
index 8cb588cb2c..c848fcbd99 100644
--- a/sysdeps/unix/sysv/linux/alpha/syscalls.list
+++ b/sysdeps/unix/sysv/linux/alpha/syscalls.list
@@ -27,6 +27,3 @@  getitimer	-	getitimer	i:ip	__getitimer	getitimer@@GLIBC_2.1
 setitimer	-	setitimer	i:ipP	__setitimer	setitimer@@GLIBC_2.1
 utimes		-	utimes		i:sp	__utimes	utimes@@GLIBC_2.1
 getrusage	-	getrusage	i:ip	__getrusage	getrusage@@GLIBC_2.1
-
-# avoid 64-bit aliases on 32-bit statfs syscalls
-statfs		-	statfs		i:sp	__statfs	statfs
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/statfs64.c b/sysdeps/unix/sysv/linux/mips/mips64/n64/statfs64.c
deleted file mode 100644
index 6e25b021ab..0000000000
--- a/sysdeps/unix/sysv/linux/mips/mips64/n64/statfs64.c
+++ /dev/null
@@ -1 +0,0 @@ 
-/* Empty.  */
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list b/sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list
index b6a0c92829..e4e16dfa49 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list
@@ -4,6 +4,4 @@  prlimit		EXTRA	prlimit64	i:iipp	prlimit		prlimit64
 
 fanotify_mark	EXTRA	fanotify_mark	i:iiiis	fanotify_mark
 
-statfs		-	statfs		i:sp	__statfs	statfs statfs64 __statfs64
-
 sendfile	-	sendfile	i:iipi	sendfile	sendfile64
diff --git a/sysdeps/unix/sysv/linux/statfs.c b/sysdeps/unix/sysv/linux/statfs.c
new file mode 100644
index 0000000000..ee248b4212
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/statfs.c
@@ -0,0 +1,61 @@ 
+/* Copyright (C) 2011-2021 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/>.  */
+
+#include <sys/statfs.h>
+#include <time.h>
+#include <sysdep.h>
+#include <kernel_stat.h>
+
+#if !STATFS_IS_STATFS64
+
+/* Return information about the filesystem on which FILE resides.  */
+int
+__statfs (const char *file, struct statfs *buf)
+{
+  struct statfs64 buf64;
+  int rc = INLINE_SYSCALL_CALL (statfs64, file, sizeof (buf64), &buf64);
+  if (rc == 0)
+    {
+      buf->f_type = buf64.f_type;
+      buf->f_bsize = buf64.f_bsize;
+      buf->f_blocks = buf64.f_blocks;
+      buf->f_bfree = buf64.f_bfree;
+      buf->f_bavail = buf64.f_bavail;
+      buf->f_files = buf64.f_files;
+      buf->f_ffree = buf64.f_ffree;
+      buf->f_fsid = buf64.f_fsid;
+      buf->f_namelen = buf64.f_namelen;
+      buf->f_frsize = buf64.f_frsize;
+      buf->f_flags = buf64.f_flags;
+      memcpy (buf->f_spare, buf64.f_spare, sizeof (buf64.f_spare));
+
+      if ((fsblkcnt_t) buf64.f_blocks != buf64.f_blocks
+	  || (fsblkcnt_t) buf64.f_bfree != buf64.f_bfree
+	  || (fsblkcnt_t) buf64.f_bavail != buf64.f_bavail
+	  || (fsblkcnt_t) buf64.f_files != buf64.f_files
+	  || (fsblkcnt_t) buf64.f_ffree != buf64.f_ffree)
+	{
+	  __set_errno (EOVERFLOW);
+	  return -1;
+	}
+    }
+  return rc;
+}
+libc_hidden_def (__statfs)
+weak_alias (__statfs, statfs)
+#endif
diff --git a/sysdeps/unix/sysv/linux/statfs64.c b/sysdeps/unix/sysv/linux/statfs64.c
index c52b3d8ae6..4f68212e9f 100644
--- a/sysdeps/unix/sysv/linux/statfs64.c
+++ b/sysdeps/unix/sysv/linux/statfs64.c
@@ -16,79 +16,26 @@ 
    License along with the GNU C Library; if not, see
    <https://www.gnu.org/licenses/>.  */
 
-#include <errno.h>
-#include <string.h>
-#include <stddef.h>
+#define __statfs __statfs_disable
+#define statfs statfs_disable
+#include <sys/statfs.h>
 #include <sysdep.h>
 #include <kernel_stat.h>
-
-/* Hide the prototypes for __statfs and statfs so that GCC will not
-   complain about the different function signatures if they are aliased
-   to  __stat64.  If STATFS_IS_STATFS64 is not zero then the statfs and
-   statfs64 structures have an identical layout but different type names.  */
-
-#if STATFS_IS_STATFS64
-# define __statfs __statfs_disable
-# define statfs statfs_disable
-#endif
-#include <sys/statfs.h>
-
-#include <kernel-features.h>
-
-
-# if __ASSUME_STATFS64 == 0
-int __no_statfs64 attribute_hidden;
-#endif
+#undef __statfs
+#undef statfs
 
 /* Return information about the filesystem on which FILE resides.  */
 int
 __statfs64 (const char *file, struct statfs64 *buf)
 {
 #ifdef __NR_statfs64
-# if __ASSUME_STATFS64 == 0
-  if (! __no_statfs64)
-# endif
-    {
-      int result = INLINE_SYSCALL (statfs64, 3, file, sizeof (*buf), buf);
-
-# if __ASSUME_STATFS64 == 0
-      if (result == 0 || errno != ENOSYS)
-# endif
-	return result;
-
-# if __ASSUME_STATFS64 == 0
-      __no_statfs64 = 1;
-# endif
-    }
-#endif
-
-#if __ASSUME_STATFS64 == 0
-  struct statfs buf32;
-
-  if (__statfs (file, &buf32) < 0)
-    return -1;
-
-  buf->f_type = buf32.f_type;
-  buf->f_bsize = buf32.f_bsize;
-  buf->f_blocks = buf32.f_blocks;
-  buf->f_bfree = buf32.f_bfree;
-  buf->f_bavail = buf32.f_bavail;
-  buf->f_files = buf32.f_files;
-  buf->f_ffree = buf32.f_ffree;
-  buf->f_fsid = buf32.f_fsid;
-  buf->f_namelen = buf32.f_namelen;
-  buf->f_frsize = buf32.f_frsize;
-  buf->f_flags = buf32.f_flags;
-  memcpy (buf->f_spare, buf32.f_spare, sizeof (buf32.f_spare));
-
-  return 0;
+  return INLINE_SYSCALL_CALL (statfs64, file, sizeof (*buf), buf);
+#else
+  return INLINE_SYSCALL_CALL (statfs, file, buf);
 #endif
 }
 weak_alias (__statfs64, statfs64)
 
-#undef __statfs
-#undef statfs
-
 #if STATFS_IS_STATFS64
 weak_alias (__statfs64, __statfs)
 weak_alias (__statfs64, statfs)
diff --git a/sysdeps/unix/sysv/linux/wordsize-64/statfs64.c b/sysdeps/unix/sysv/linux/wordsize-64/statfs64.c
deleted file mode 100644
index 06bc68826f..0000000000
--- a/sysdeps/unix/sysv/linux/wordsize-64/statfs64.c
+++ /dev/null
@@ -1 +0,0 @@ 
-/* statfs64 is the same as statfs. */
diff --git a/sysdeps/unix/sysv/linux/wordsize-64/syscalls.list b/sysdeps/unix/sysv/linux/wordsize-64/syscalls.list
index 5a0c910847..68e3c60536 100644
--- a/sysdeps/unix/sysv/linux/wordsize-64/syscalls.list
+++ b/sysdeps/unix/sysv/linux/wordsize-64/syscalls.list
@@ -1,6 +1,5 @@ 
 # File name	Caller	Syscall name	# args	Strong name	Weak names
 
-statfs		-	statfs		i:sp	__statfs	statfs statfs64
 sendfile	-	sendfile	i:iipi	sendfile	sendfile64
 prlimit		EXTRA	prlimit64	i:iipp	prlimit		prlimit64