Patchwork [2/4] Consolidate fallocate{64} implementations

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Submitter Adhemerval Zanella Netto
Date Aug. 19, 2016, 2:41 p.m.
Message ID <1471617709-16267-3-git-send-email-adhemerval.zanella@linaro.org>
Download mbox | patch
Permalink /patch/14783/
State New
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Adhemerval Zanella Netto - Aug. 19, 2016, 2:41 p.m.
This patch consolidates all the fallocate{64} implementation for Linux
in only one (sysdeps/unix/sysv/linux/fallocate{64}.c).  It also removes the
syscall from the auto-generation using assembly macros.

The new macro SYSCALL_LL{64} is used to handle the offset argument.

Checked on x86_64, x32, i386, aarch64, and ppc64le.

	* sysdeps/unix/sysv/linux/Makefile (test): Add tst-fallocate and
	tst-fallocate64.
	* sysdeps/unix/sysv/linux/tst-fallocate.c: New file.
	* sysdeps/unix/sysv/linux/tst-fallocate64.c: Likewise.
	* sysdeps/unix/sysv/linux/tst-fallocate-common.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/n32/fallocate.c: Remove file.
	* sysdeps/unix/sysv/linux/mips/mips64/n32/fallocate64.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/n64/fallocate.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/n64/fallocate64.c: Likewise.
	* sysdeps/unix/sysv/linux/wordsize-64/fallocate.c: Likewise.
	* sysdeps/unix/sysv/linux/wordsize-64/fallocate64.c: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/x32/syscalls.list (fallocate): Remove
	syscall auto-generation.
	* sysdeps/unix/sysv/linux/fallocate.c (fallocate): Use SYSCALL_LL
	macro on offset argument.
	* sysdeps/unix/sysv/linux/fallocate64.c (fallocate64): Use
	SYSCALL_LL64 on offset argument.
---
 ChangeLog                                          | 18 +++++
 sysdeps/unix/sysv/linux/Makefile                   |  3 +-
 sysdeps/unix/sysv/linux/fallocate.c                | 11 +--
 sysdeps/unix/sysv/linux/fallocate64.c              | 14 ++--
 .../unix/sysv/linux/mips/mips64/n32/fallocate.c    | 33 --------
 .../unix/sysv/linux/mips/mips64/n32/fallocate64.c  | 33 --------
 .../unix/sysv/linux/mips/mips64/n64/fallocate.c    |  1 -
 .../unix/sysv/linux/mips/mips64/n64/fallocate64.c  |  1 -
 sysdeps/unix/sysv/linux/tst-fallocate-common.c     | 88 ++++++++++++++++++++++
 sysdeps/unix/sysv/linux/tst-fallocate.c            | 25 ++++++
 sysdeps/unix/sysv/linux/tst-fallocate64.c          | 54 +++++++++++++
 sysdeps/unix/sysv/linux/wordsize-64/fallocate.c    | 34 ---------
 sysdeps/unix/sysv/linux/wordsize-64/fallocate64.c  |  1 -
 sysdeps/unix/sysv/linux/x86_64/x32/syscalls.list   |  1 -
 14 files changed, 195 insertions(+), 122 deletions(-)
 delete mode 100644 sysdeps/unix/sysv/linux/mips/mips64/n32/fallocate.c
 delete mode 100644 sysdeps/unix/sysv/linux/mips/mips64/n32/fallocate64.c
 delete mode 100644 sysdeps/unix/sysv/linux/mips/mips64/n64/fallocate.c
 delete mode 100644 sysdeps/unix/sysv/linux/mips/mips64/n64/fallocate64.c
 create mode 100644 sysdeps/unix/sysv/linux/tst-fallocate-common.c
 create mode 100644 sysdeps/unix/sysv/linux/tst-fallocate.c
 create mode 100644 sysdeps/unix/sysv/linux/tst-fallocate64.c
 delete mode 100644 sysdeps/unix/sysv/linux/wordsize-64/fallocate.c
 delete mode 100644 sysdeps/unix/sysv/linux/wordsize-64/fallocate64.c
Yury Norov - Aug. 22, 2016, 3:14 p.m.
On Fri, Aug 19, 2016 at 11:41:47AM -0300, Adhemerval Zanella wrote:
> This patch consolidates all the fallocate{64} implementation for Linux
> in only one (sysdeps/unix/sysv/linux/fallocate{64}.c).  It also removes the
> syscall from the auto-generation using assembly macros.
> 
> The new macro SYSCALL_LL{64} is used to handle the offset argument.
> 
> Checked on x86_64, x32, i386, aarch64, and ppc64le.
> 
> 	* sysdeps/unix/sysv/linux/Makefile (test): Add tst-fallocate and
> 	tst-fallocate64.
> 	* sysdeps/unix/sysv/linux/tst-fallocate.c: New file.
> 	* sysdeps/unix/sysv/linux/tst-fallocate64.c: Likewise.
> 	* sysdeps/unix/sysv/linux/tst-fallocate-common.c: Likewise.
> 	* sysdeps/unix/sysv/linux/mips/mips64/n32/fallocate.c: Remove file.
> 	* sysdeps/unix/sysv/linux/mips/mips64/n32/fallocate64.c: Likewise.
> 	* sysdeps/unix/sysv/linux/mips/mips64/n64/fallocate.c: Likewise.
> 	* sysdeps/unix/sysv/linux/mips/mips64/n64/fallocate64.c: Likewise.
> 	* sysdeps/unix/sysv/linux/wordsize-64/fallocate.c: Likewise.
> 	* sysdeps/unix/sysv/linux/wordsize-64/fallocate64.c: Likewise.
> 	* sysdeps/unix/sysv/linux/x86_64/x32/syscalls.list (fallocate): Remove
> 	syscall auto-generation.
> 	* sysdeps/unix/sysv/linux/fallocate.c (fallocate): Use SYSCALL_LL
> 	macro on offset argument.
> 	* sysdeps/unix/sysv/linux/fallocate64.c (fallocate64): Use
> 	SYSCALL_LL64 on offset argument.
> ---
>  ChangeLog                                          | 18 +++++
>  sysdeps/unix/sysv/linux/Makefile                   |  3 +-
>  sysdeps/unix/sysv/linux/fallocate.c                | 11 +--
>  sysdeps/unix/sysv/linux/fallocate64.c              | 14 ++--
>  .../unix/sysv/linux/mips/mips64/n32/fallocate.c    | 33 --------
>  .../unix/sysv/linux/mips/mips64/n32/fallocate64.c  | 33 --------
>  .../unix/sysv/linux/mips/mips64/n64/fallocate.c    |  1 -
>  .../unix/sysv/linux/mips/mips64/n64/fallocate64.c  |  1 -
>  sysdeps/unix/sysv/linux/tst-fallocate-common.c     | 88 ++++++++++++++++++++++
>  sysdeps/unix/sysv/linux/tst-fallocate.c            | 25 ++++++
>  sysdeps/unix/sysv/linux/tst-fallocate64.c          | 54 +++++++++++++
>  sysdeps/unix/sysv/linux/wordsize-64/fallocate.c    | 34 ---------
>  sysdeps/unix/sysv/linux/wordsize-64/fallocate64.c  |  1 -
>  sysdeps/unix/sysv/linux/x86_64/x32/syscalls.list   |  1 -
>  14 files changed, 195 insertions(+), 122 deletions(-)
>  delete mode 100644 sysdeps/unix/sysv/linux/mips/mips64/n32/fallocate.c
>  delete mode 100644 sysdeps/unix/sysv/linux/mips/mips64/n32/fallocate64.c
>  delete mode 100644 sysdeps/unix/sysv/linux/mips/mips64/n64/fallocate.c
>  delete mode 100644 sysdeps/unix/sysv/linux/mips/mips64/n64/fallocate64.c
>  create mode 100644 sysdeps/unix/sysv/linux/tst-fallocate-common.c
>  create mode 100644 sysdeps/unix/sysv/linux/tst-fallocate.c
>  create mode 100644 sysdeps/unix/sysv/linux/tst-fallocate64.c
>  delete mode 100644 sysdeps/unix/sysv/linux/wordsize-64/fallocate.c
>  delete mode 100644 sysdeps/unix/sysv/linux/wordsize-64/fallocate64.c
> 
> diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile
> index f0b052d..4ece07c 100644
> --- a/sysdeps/unix/sysv/linux/Makefile
> +++ b/sysdeps/unix/sysv/linux/Makefile
> @@ -42,7 +42,8 @@ sysdep_headers += sys/mount.h sys/acct.h sys/sysctl.h \
>  		  bits/socket_type.h bits/syscall.h bits/sysctl.h \
>  		  bits/mman-linux.h
>  
> -tests += tst-clone tst-clone2 tst-fanotify tst-personality
> +tests += tst-clone tst-clone2 tst-fanotify tst-personality tst-fallocate \
> +	 tst-fallocate64
>  
>  # Generate the list of SYS_* macros for the system calls (__NR_* macros).
>  
> diff --git a/sysdeps/unix/sysv/linux/fallocate.c b/sysdeps/unix/sysv/linux/fallocate.c
> index 6a58a5f..a38e9a6 100644
> --- a/sysdeps/unix/sysv/linux/fallocate.c
> +++ b/sysdeps/unix/sysv/linux/fallocate.c
> @@ -19,17 +19,12 @@
>  #include <fcntl.h>
>  #include <sysdep-cancel.h>
>  
> -
> +#ifndef __OFF_T_MATCHES_OFF64_T
>  /* Reserve storage for the data of the file associated with FD.  */
>  int
>  fallocate (int fd, int mode, __off_t offset, __off_t len)
>  {
> -#ifdef __NR_fallocate
>    return SYSCALL_CANCEL (fallocate, fd, mode,
> -			 __LONG_LONG_PAIR (offset >> 31, offset),
> -			 __LONG_LONG_PAIR (len >> 31, len));
> -#else
> -  __set_errno (ENOSYS);
> -  return -1;
> -#endif
> +			 SYSCALL_LL (offset), SYSCALL_LL (len));
>  }
> +#endif
> diff --git a/sysdeps/unix/sysv/linux/fallocate64.c b/sysdeps/unix/sysv/linux/fallocate64.c
> index 8e76d6f..d466095 100644
> --- a/sysdeps/unix/sysv/linux/fallocate64.c
> +++ b/sysdeps/unix/sysv/linux/fallocate64.c
> @@ -24,14 +24,10 @@
>  int
>  fallocate64 (int fd, int mode, __off64_t offset, __off64_t len)
>  {
> -#ifdef __NR_fallocate
>    return SYSCALL_CANCEL (fallocate, fd, mode,
> -			 __LONG_LONG_PAIR ((long int) (offset >> 32),
> -					   (long int) offset),
> -			 __LONG_LONG_PAIR ((long int) (len >> 32),
> -					   (long int) len));
> -#else
> -  __set_errno (ENOSYS);
> -  return -1;
> -#endif
> +			 SYSCALL_LL64 (offset), SYSCALL_LL64 (len));
>  }
> +
> +#ifdef __OFF_T_MATCHES_OFF64_T
> +weak_alias (fallocate64, fallocate)
> +#endif
> diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/fallocate.c b/sysdeps/unix/sysv/linux/mips/mips64/n32/fallocate.c
> deleted file mode 100644
> index 4e432f4..0000000
> --- a/sysdeps/unix/sysv/linux/mips/mips64/n32/fallocate.c
> +++ /dev/null
> @@ -1,33 +0,0 @@
> -/* Copyright (C) 2007-2016 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
> -   <http://www.gnu.org/licenses/>.  */
> -
> -#include <errno.h>
> -#include <fcntl.h>
> -#include <sysdep-cancel.h>
> -
> -
> -/* Reserve storage for the data of the file associated with FD.  */
> -int
> -fallocate (int fd, int mode, __off_t offset, __off_t len)
> -{
> -#ifdef __NR_fallocate
> -  return SYSCALL_CANCEL (fallocate, fd, mode, offset, len);
> -#else
> -  __set_errno (ENOSYS);
> -  return -1;
> -#endif
> -}
> diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/fallocate64.c b/sysdeps/unix/sysv/linux/mips/mips64/n32/fallocate64.c
> deleted file mode 100644
> index 95c9eab..0000000
> --- a/sysdeps/unix/sysv/linux/mips/mips64/n32/fallocate64.c
> +++ /dev/null
> @@ -1,33 +0,0 @@
> -/* Copyright (C) 2007-2016 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
> -   <http://www.gnu.org/licenses/>.  */
> -
> -#include <errno.h>
> -#include <fcntl.h>
> -#include <sysdep-cancel.h>
> -
> -
> -/* Reserve storage for the data of the file associated with FD.  */
> -int
> -fallocate64 (int fd, int mode, __off64_t offset, __off64_t len)
> -{
> -#ifdef __NR_fallocate
> -  return SYSCALL_CANCEL (fallocate, fd, mode, offset, len);
> -#else
> -  __set_errno (ENOSYS);
> -  return -1;
> -#endif
> -}
> diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/fallocate.c b/sysdeps/unix/sysv/linux/mips/mips64/n64/fallocate.c
> deleted file mode 100644
> index d3b7218..0000000
> --- a/sysdeps/unix/sysv/linux/mips/mips64/n64/fallocate.c
> +++ /dev/null
> @@ -1 +0,0 @@
> -#include <sysdeps/unix/sysv/linux/wordsize-64/fallocate.c>
> diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/fallocate64.c b/sysdeps/unix/sysv/linux/mips/mips64/n64/fallocate64.c
> deleted file mode 100644
> index fb2b681..0000000
> --- a/sysdeps/unix/sysv/linux/mips/mips64/n64/fallocate64.c
> +++ /dev/null
> @@ -1 +0,0 @@
> -/* fallocate64 is in fallocate.c */
> diff --git a/sysdeps/unix/sysv/linux/tst-fallocate-common.c b/sysdeps/unix/sysv/linux/tst-fallocate-common.c
> new file mode 100644
> index 0000000..cceaa1d
> --- /dev/null
> +++ b/sysdeps/unix/sysv/linux/tst-fallocate-common.c
> @@ -0,0 +1,88 @@
> +/* Basic fallocate test (no specific flags is checked).
> +   Copyright (C) 2016 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
> +   <http://www.gnu.org/licenses/>.  */
> +
> +#include <fcntl.h>
> +#include <sys/types.h>
> +#include <sys/stat.h>
> +#include <unistd.h>
> +
> +static void do_prepare (void);
> +#define PREPARE(argc, argv)     do_prepare () 

Trailing whitespace.

> +static int do_test (void);
> +#define TEST_FUNCTION           do_test ()
> +
> +#define TIMEOUT 20 /* sec.  */
> +
> +#include <test-skeleton.c>
> +
> +static char *temp_filename;
> +static int temp_fd;
> +
> +void
> +do_prepare (void)
> +{
> +  temp_fd = create_temp_file ("tst-fallocate.", &temp_filename);
> +  if (temp_fd == -1)
> +    {
> +      printf ("cannot create temporary file: %m\n");
> +      exit (1);
> +    }
> +}
> +
> +#define FAIL(str) \
> +  do { printf ("error: %s (line %d)\n", str, __LINE__); return 1; } while (0)
> +
> +static int
> +do_test_with_offset (off_t offset)
> +{
> +  int ret;
> +  struct stat finfo;
> +  char bwrite[1024] = { 0xf0 };
> +  char bread[1024];
> +
> +  /* It tries to fallocate 1024 bytes from 'offset' and then write 1024 bytes.
> +     After both operation rewind the file descriptor and read 1024 bytes
> +     and check if both buffer have the same contents.  */
> +  ret = fallocate (temp_fd, 0, offset, 1024);
> +  if (ret == -1)
> +    FAIL ("fallocate failed");
> +
> +  ret = fstat (temp_fd, &finfo);
> +  if (ret == -1)
> +    FAIL ("fstat failed");
> +
> +  if (finfo.st_size < (offset + 1024))
> +    FAIL ("size of first fallocate less than expected (1024)");
> +
> +  if (lseek (temp_fd, offset, SEEK_SET) == (off_t) -1)
> +    FAIL ("fseek (0, SEEK_SET) failed");
> +
> +  if (write (temp_fd, bwrite, 1024) != 1024)
> +    FAIL ("fail trying to write 1024 bytes");
> +
> +  if (lseek (temp_fd, offset, SEEK_SET) == (off_t) -1)
> +    FAIL ("fseek (0, SEEK_SET) failed");
> +
> +  if (read (temp_fd, bread, 1024) != 1024)
> +    FAIL ("fail trying to read 1024 bytes");
> +
> +  if (memcmp (bwrite, bread, 1024) != 0)
> +    FAIL ("buffer writted different than buffer readed");
> +
> +  return 0;
> +}
> diff --git a/sysdeps/unix/sysv/linux/tst-fallocate.c b/sysdeps/unix/sysv/linux/tst-fallocate.c
> new file mode 100644
> index 0000000..ec3867c
> --- /dev/null
> +++ b/sysdeps/unix/sysv/linux/tst-fallocate.c
> @@ -0,0 +1,25 @@
> +/* Basic fallocate test (no specific flags is checked).
> +   Copyright (C) 2016 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
> +   <http://www.gnu.org/licenses/>.  */
> +
> +#include "tst-fallocate-common.c"
> +
> +static int
> +do_test (void)
> +{
> +  return do_test_with_offset (0);
> +}
> diff --git a/sysdeps/unix/sysv/linux/tst-fallocate64.c b/sysdeps/unix/sysv/linux/tst-fallocate64.c
> new file mode 100644
> index 0000000..78bcb8c
> --- /dev/null
> +++ b/sysdeps/unix/sysv/linux/tst-fallocate64.c
> @@ -0,0 +1,54 @@
> +/* Basic fallocate64 test (no specific flags is checked).
> +   Copyright (C) 2016 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
> +   <http://www.gnu.org/licenses/>.  */
> +
> +#define _FILE_OFFSET_BITS 64
> +#include "tst-fallocate-common.c"
> +
> +static int
> +do_test (void)
> +{
> +  ssize_t ret;
> +
> +  ret = do_test_with_offset (0);
> +  if (ret == -1)
> +    return 1;
> +
> +  off_t base_offset = UINT32_MAX + 2048LL;
> +  ret = do_test_with_offset (base_offset);
> +  if (ret == -1)
> +    return 1;
> +
> +  struct stat st;
> +  if (fstat (temp_fd, &st) == -1)
> +    {
> +      printf ("error: fstat on temporary file failed: %m");
> +      return 1;
> +    }
> +
> +  /* The file size should >= base_offset plus bytes written.  */
> +  off_t expected_value = base_offset + ret;
> +  if (st.st_size < expected_value)
> +    {
> +      printf ("error: file size less than expected (%jd > %jd)\n",
> +              (intmax_t) expected_value, (intmax_t) st.st_size);
> +      return 1;
> +    }
> +
> +  return 0;
> +}
> +
> diff --git a/sysdeps/unix/sysv/linux/wordsize-64/fallocate.c b/sysdeps/unix/sysv/linux/wordsize-64/fallocate.c
> deleted file mode 100644
> index c1dd0b4..0000000
> --- a/sysdeps/unix/sysv/linux/wordsize-64/fallocate.c
> +++ /dev/null
> @@ -1,34 +0,0 @@
> -/* Copyright (C) 2007-2016 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
> -   <http://www.gnu.org/licenses/>.  */
> -
> -#include <errno.h>
> -#include <fcntl.h>
> -#include <sysdep-cancel.h>
> -
> -
> -/* Reserve storage for the data of the file associated with FD.  */
> -int
> -fallocate (int fd, int mode, __off_t offset, __off_t len)
> -{
> -#ifdef __NR_fallocate
> -  return SYSCALL_CANCEL (fallocate, fd, mode, offset, len);
> -#else
> -  __set_errno (ENOSYS);
> -  return -1;
> -#endif
> -}
> -strong_alias (fallocate, fallocate64)
> diff --git a/sysdeps/unix/sysv/linux/wordsize-64/fallocate64.c b/sysdeps/unix/sysv/linux/wordsize-64/fallocate64.c
> deleted file mode 100644
> index df33112..0000000
> --- a/sysdeps/unix/sysv/linux/wordsize-64/fallocate64.c
> +++ /dev/null
> @@ -1 +0,0 @@
> -/* fallocate64 is in posix_fallocate.c */
> diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/syscalls.list b/sysdeps/unix/sysv/linux/x86_64/x32/syscalls.list
> index dce4302..8cccb1d 100644
> --- a/sysdeps/unix/sysv/linux/x86_64/x32/syscalls.list
> +++ b/sysdeps/unix/sysv/linux/x86_64/x32/syscalls.list
> @@ -1,6 +1,5 @@
>  # File name	Caller	Syscall name	# args	Strong name	Weak names
>  
> -fallocate	-	fallocate	Ci:iiii	fallocate	fallocate64
>  gettimeofday	-	gettimeofday:__vdso_gettimeofday@LINUX_2.6	i:pP	__gettimeofday	gettimeofday
>  personality	EXTRA	personality	Ei:i	__personality	personality
>  posix_fadvise	-	fadvise64	Vi:iiii	posix_fadvise	posix_fadvise64
> -- 
> 2.7.4
Adhemerval Zanella Netto - Aug. 23, 2016, 7:20 p.m.
Thanks for the review, comments below.

>> diff --git a/sysdeps/unix/sysv/linux/tst-fallocate-common.c b/sysdeps/unix/sysv/linux/tst-fallocate-common.c
>> new file mode 100644
>> index 0000000..cceaa1d
>> --- /dev/null
>> +++ b/sysdeps/unix/sysv/linux/tst-fallocate-common.c
>> @@ -0,0 +1,88 @@
>> +/* Basic fallocate test (no specific flags is checked).
>> +   Copyright (C) 2016 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
>> +   <http://www.gnu.org/licenses/>.  */
>> +
>> +#include <fcntl.h>
>> +#include <sys/types.h>
>> +#include <sys/stat.h>
>> +#include <unistd.h>
>> +
>> +static void do_prepare (void);
>> +#define PREPARE(argc, argv)     do_prepare () 
> 
> Trailing whitespace.
> 

Ack, I will fix it.

Patch

diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile
index f0b052d..4ece07c 100644
--- a/sysdeps/unix/sysv/linux/Makefile
+++ b/sysdeps/unix/sysv/linux/Makefile
@@ -42,7 +42,8 @@  sysdep_headers += sys/mount.h sys/acct.h sys/sysctl.h \
 		  bits/socket_type.h bits/syscall.h bits/sysctl.h \
 		  bits/mman-linux.h
 
-tests += tst-clone tst-clone2 tst-fanotify tst-personality
+tests += tst-clone tst-clone2 tst-fanotify tst-personality tst-fallocate \
+	 tst-fallocate64
 
 # Generate the list of SYS_* macros for the system calls (__NR_* macros).
 
diff --git a/sysdeps/unix/sysv/linux/fallocate.c b/sysdeps/unix/sysv/linux/fallocate.c
index 6a58a5f..a38e9a6 100644
--- a/sysdeps/unix/sysv/linux/fallocate.c
+++ b/sysdeps/unix/sysv/linux/fallocate.c
@@ -19,17 +19,12 @@ 
 #include <fcntl.h>
 #include <sysdep-cancel.h>
 
-
+#ifndef __OFF_T_MATCHES_OFF64_T
 /* Reserve storage for the data of the file associated with FD.  */
 int
 fallocate (int fd, int mode, __off_t offset, __off_t len)
 {
-#ifdef __NR_fallocate
   return SYSCALL_CANCEL (fallocate, fd, mode,
-			 __LONG_LONG_PAIR (offset >> 31, offset),
-			 __LONG_LONG_PAIR (len >> 31, len));
-#else
-  __set_errno (ENOSYS);
-  return -1;
-#endif
+			 SYSCALL_LL (offset), SYSCALL_LL (len));
 }
+#endif
diff --git a/sysdeps/unix/sysv/linux/fallocate64.c b/sysdeps/unix/sysv/linux/fallocate64.c
index 8e76d6f..d466095 100644
--- a/sysdeps/unix/sysv/linux/fallocate64.c
+++ b/sysdeps/unix/sysv/linux/fallocate64.c
@@ -24,14 +24,10 @@ 
 int
 fallocate64 (int fd, int mode, __off64_t offset, __off64_t len)
 {
-#ifdef __NR_fallocate
   return SYSCALL_CANCEL (fallocate, fd, mode,
-			 __LONG_LONG_PAIR ((long int) (offset >> 32),
-					   (long int) offset),
-			 __LONG_LONG_PAIR ((long int) (len >> 32),
-					   (long int) len));
-#else
-  __set_errno (ENOSYS);
-  return -1;
-#endif
+			 SYSCALL_LL64 (offset), SYSCALL_LL64 (len));
 }
+
+#ifdef __OFF_T_MATCHES_OFF64_T
+weak_alias (fallocate64, fallocate)
+#endif
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/fallocate.c b/sysdeps/unix/sysv/linux/mips/mips64/n32/fallocate.c
deleted file mode 100644
index 4e432f4..0000000
--- a/sysdeps/unix/sysv/linux/mips/mips64/n32/fallocate.c
+++ /dev/null
@@ -1,33 +0,0 @@ 
-/* Copyright (C) 2007-2016 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
-   <http://www.gnu.org/licenses/>.  */
-
-#include <errno.h>
-#include <fcntl.h>
-#include <sysdep-cancel.h>
-
-
-/* Reserve storage for the data of the file associated with FD.  */
-int
-fallocate (int fd, int mode, __off_t offset, __off_t len)
-{
-#ifdef __NR_fallocate
-  return SYSCALL_CANCEL (fallocate, fd, mode, offset, len);
-#else
-  __set_errno (ENOSYS);
-  return -1;
-#endif
-}
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/fallocate64.c b/sysdeps/unix/sysv/linux/mips/mips64/n32/fallocate64.c
deleted file mode 100644
index 95c9eab..0000000
--- a/sysdeps/unix/sysv/linux/mips/mips64/n32/fallocate64.c
+++ /dev/null
@@ -1,33 +0,0 @@ 
-/* Copyright (C) 2007-2016 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
-   <http://www.gnu.org/licenses/>.  */
-
-#include <errno.h>
-#include <fcntl.h>
-#include <sysdep-cancel.h>
-
-
-/* Reserve storage for the data of the file associated with FD.  */
-int
-fallocate64 (int fd, int mode, __off64_t offset, __off64_t len)
-{
-#ifdef __NR_fallocate
-  return SYSCALL_CANCEL (fallocate, fd, mode, offset, len);
-#else
-  __set_errno (ENOSYS);
-  return -1;
-#endif
-}
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/fallocate.c b/sysdeps/unix/sysv/linux/mips/mips64/n64/fallocate.c
deleted file mode 100644
index d3b7218..0000000
--- a/sysdeps/unix/sysv/linux/mips/mips64/n64/fallocate.c
+++ /dev/null
@@ -1 +0,0 @@ 
-#include <sysdeps/unix/sysv/linux/wordsize-64/fallocate.c>
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/fallocate64.c b/sysdeps/unix/sysv/linux/mips/mips64/n64/fallocate64.c
deleted file mode 100644
index fb2b681..0000000
--- a/sysdeps/unix/sysv/linux/mips/mips64/n64/fallocate64.c
+++ /dev/null
@@ -1 +0,0 @@ 
-/* fallocate64 is in fallocate.c */
diff --git a/sysdeps/unix/sysv/linux/tst-fallocate-common.c b/sysdeps/unix/sysv/linux/tst-fallocate-common.c
new file mode 100644
index 0000000..cceaa1d
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/tst-fallocate-common.c
@@ -0,0 +1,88 @@ 
+/* Basic fallocate test (no specific flags is checked).
+   Copyright (C) 2016 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
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+static void do_prepare (void);
+#define PREPARE(argc, argv)     do_prepare () 
+static int do_test (void);
+#define TEST_FUNCTION           do_test ()
+
+#define TIMEOUT 20 /* sec.  */
+
+#include <test-skeleton.c>
+
+static char *temp_filename;
+static int temp_fd;
+
+void
+do_prepare (void)
+{
+  temp_fd = create_temp_file ("tst-fallocate.", &temp_filename);
+  if (temp_fd == -1)
+    {
+      printf ("cannot create temporary file: %m\n");
+      exit (1);
+    }
+}
+
+#define FAIL(str) \
+  do { printf ("error: %s (line %d)\n", str, __LINE__); return 1; } while (0)
+
+static int
+do_test_with_offset (off_t offset)
+{
+  int ret;
+  struct stat finfo;
+  char bwrite[1024] = { 0xf0 };
+  char bread[1024];
+
+  /* It tries to fallocate 1024 bytes from 'offset' and then write 1024 bytes.
+     After both operation rewind the file descriptor and read 1024 bytes
+     and check if both buffer have the same contents.  */
+  ret = fallocate (temp_fd, 0, offset, 1024);
+  if (ret == -1)
+    FAIL ("fallocate failed");
+
+  ret = fstat (temp_fd, &finfo);
+  if (ret == -1)
+    FAIL ("fstat failed");
+
+  if (finfo.st_size < (offset + 1024))
+    FAIL ("size of first fallocate less than expected (1024)");
+
+  if (lseek (temp_fd, offset, SEEK_SET) == (off_t) -1)
+    FAIL ("fseek (0, SEEK_SET) failed");
+
+  if (write (temp_fd, bwrite, 1024) != 1024)
+    FAIL ("fail trying to write 1024 bytes");
+
+  if (lseek (temp_fd, offset, SEEK_SET) == (off_t) -1)
+    FAIL ("fseek (0, SEEK_SET) failed");
+
+  if (read (temp_fd, bread, 1024) != 1024)
+    FAIL ("fail trying to read 1024 bytes");
+
+  if (memcmp (bwrite, bread, 1024) != 0)
+    FAIL ("buffer writted different than buffer readed");
+
+  return 0;
+}
diff --git a/sysdeps/unix/sysv/linux/tst-fallocate.c b/sysdeps/unix/sysv/linux/tst-fallocate.c
new file mode 100644
index 0000000..ec3867c
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/tst-fallocate.c
@@ -0,0 +1,25 @@ 
+/* Basic fallocate test (no specific flags is checked).
+   Copyright (C) 2016 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
+   <http://www.gnu.org/licenses/>.  */
+
+#include "tst-fallocate-common.c"
+
+static int
+do_test (void)
+{
+  return do_test_with_offset (0);
+}
diff --git a/sysdeps/unix/sysv/linux/tst-fallocate64.c b/sysdeps/unix/sysv/linux/tst-fallocate64.c
new file mode 100644
index 0000000..78bcb8c
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/tst-fallocate64.c
@@ -0,0 +1,54 @@ 
+/* Basic fallocate64 test (no specific flags is checked).
+   Copyright (C) 2016 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
+   <http://www.gnu.org/licenses/>.  */
+
+#define _FILE_OFFSET_BITS 64
+#include "tst-fallocate-common.c"
+
+static int
+do_test (void)
+{
+  ssize_t ret;
+
+  ret = do_test_with_offset (0);
+  if (ret == -1)
+    return 1;
+
+  off_t base_offset = UINT32_MAX + 2048LL;
+  ret = do_test_with_offset (base_offset);
+  if (ret == -1)
+    return 1;
+
+  struct stat st;
+  if (fstat (temp_fd, &st) == -1)
+    {
+      printf ("error: fstat on temporary file failed: %m");
+      return 1;
+    }
+
+  /* The file size should >= base_offset plus bytes written.  */
+  off_t expected_value = base_offset + ret;
+  if (st.st_size < expected_value)
+    {
+      printf ("error: file size less than expected (%jd > %jd)\n",
+              (intmax_t) expected_value, (intmax_t) st.st_size);
+      return 1;
+    }
+
+  return 0;
+}
+
diff --git a/sysdeps/unix/sysv/linux/wordsize-64/fallocate.c b/sysdeps/unix/sysv/linux/wordsize-64/fallocate.c
deleted file mode 100644
index c1dd0b4..0000000
--- a/sysdeps/unix/sysv/linux/wordsize-64/fallocate.c
+++ /dev/null
@@ -1,34 +0,0 @@ 
-/* Copyright (C) 2007-2016 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
-   <http://www.gnu.org/licenses/>.  */
-
-#include <errno.h>
-#include <fcntl.h>
-#include <sysdep-cancel.h>
-
-
-/* Reserve storage for the data of the file associated with FD.  */
-int
-fallocate (int fd, int mode, __off_t offset, __off_t len)
-{
-#ifdef __NR_fallocate
-  return SYSCALL_CANCEL (fallocate, fd, mode, offset, len);
-#else
-  __set_errno (ENOSYS);
-  return -1;
-#endif
-}
-strong_alias (fallocate, fallocate64)
diff --git a/sysdeps/unix/sysv/linux/wordsize-64/fallocate64.c b/sysdeps/unix/sysv/linux/wordsize-64/fallocate64.c
deleted file mode 100644
index df33112..0000000
--- a/sysdeps/unix/sysv/linux/wordsize-64/fallocate64.c
+++ /dev/null
@@ -1 +0,0 @@ 
-/* fallocate64 is in posix_fallocate.c */
diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/syscalls.list b/sysdeps/unix/sysv/linux/x86_64/x32/syscalls.list
index dce4302..8cccb1d 100644
--- a/sysdeps/unix/sysv/linux/x86_64/x32/syscalls.list
+++ b/sysdeps/unix/sysv/linux/x86_64/x32/syscalls.list
@@ -1,6 +1,5 @@ 
 # File name	Caller	Syscall name	# args	Strong name	Weak names
 
-fallocate	-	fallocate	Ci:iiii	fallocate	fallocate64
 gettimeofday	-	gettimeofday:__vdso_gettimeofday@LINUX_2.6	i:pP	__gettimeofday	gettimeofday
 personality	EXTRA	personality	Ei:i	__personality	personality
 posix_fadvise	-	fadvise64	Vi:iiii	posix_fadvise	posix_fadvise64