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Re: [PATCH 3/4] Consolidate Linux ftruncate implementations


Ping (x2).

On 11/10/2016 11:41, Adhemerval Zanella wrote:
> Ping.
> 
> On 20/09/2016 12:01, Adhemerval Zanella wrote:
>> THis patch consolidates all Linux ftruncate implementation on
>> sysdeps/unix/sysv/linux/ftruncate{64}.c.  It is based on
>> {INTERNAL,INLINE}_SYSCALL patch [1] to simplify the syscall construction.
>>
>> General idea is to build ftruncate iff __OFF_T_MATCHES_OFF64_T is not
>> defined, otherwise ftruncate64 will be build and ftruncate will be an
>> alias.  The fallocate will use old compat syscall and pass 32-bit off_t
>> argument, while fallocate64 will handle the correct off64_t passing using
>> __ALIGNMENT_ARG and SYSCALL_LL64 macros.
>>
>> Tested on x86_64, i386, aarch64, and armhf.
>>
>> 	* posix/tst-truncate-common.c: New file.
>> 	* posix/tst-truncate.c: Use tst-truncate-common.c.
>> 	* posix/tst-truncate64.c: Likewise and add LFS tests.
>> 	* sysdeps/unix/sysv/linux/arm/ftruncate64.c: Remove file.
>> 	* sysdeps/unix/sysv/linux/generic/wordsize-32/ftruncate.c: Likewise.
>> 	* sysdeps/unix/sysv/linux/generic/wordsize-32/ftruncate64.c: Likewise.
>> 	* sysdeps/unix/sysv/linux/mips/mips32/ftruncate64.c: Likewise.
>> 	* sysdeps/unix/sysv/linux/mips/mips64/ftruncate64.c: Likewise.
>> 	* sysdeps/unix/sysv/linux/powerpc/powerpc32/ftruncate64.c: Likewise.
>> 	* sysdeps/unix/sysv/linux/wordsize-64/ftruncate64.c: Likewise.
>> 	* sysdeps/unix/sysv/linux/ftruncate.c: New file.
>> 	* sysdeps/unix/sysv/linux/ftruncate64.c (__ftruncate64): Use
>> 	INLINE_SYSCALL_CALL, __ALIGNMENT_ARG and SYSCALL_LL64 macros.
>> 	[__OFF_T_MATCHES_OFF64_T] (ftruncate): Add alias.
>>
>> [1] https://sourceware.org/ml/libc-alpha/2016-08/msg00646.html
>> ---
>>  posix/tst-truncate-common.c                        |  88 ++++++++++++++++
>>  posix/tst-truncate.c                               | 114 +--------------------
>>  posix/tst-truncate64.c                             |  21 +++-
>>  sysdeps/unix/sysv/linux/arm/ftruncate64.c          |  36 -------
>>  sysdeps/unix/sysv/linux/ftruncate.c                |  35 +++++++
>>  sysdeps/unix/sysv/linux/ftruncate64.c              |  21 ++--
>>  .../sysv/linux/generic/wordsize-32/ftruncate.c     |  31 ------
>>  .../sysv/linux/generic/wordsize-32/ftruncate64.c   |  32 ------
>>  sysdeps/unix/sysv/linux/mips/mips32/ftruncate64.c  |  36 -------
>>  sysdeps/unix/sysv/linux/mips/mips64/ftruncate64.c  |   1 -
>>  .../sysv/linux/powerpc/powerpc32/ftruncate64.c     |  36 -------
>>  sysdeps/unix/sysv/linux/wordsize-64/ftruncate64.c  |   1 -
>>  12 files changed, 156 insertions(+), 296 deletions(-)
>>  create mode 100644 posix/tst-truncate-common.c
>>  delete mode 100644 sysdeps/unix/sysv/linux/arm/ftruncate64.c
>>  create mode 100644 sysdeps/unix/sysv/linux/ftruncate.c
>>  delete mode 100644 sysdeps/unix/sysv/linux/generic/wordsize-32/ftruncate.c
>>  delete mode 100644 sysdeps/unix/sysv/linux/generic/wordsize-32/ftruncate64.c
>>  delete mode 100644 sysdeps/unix/sysv/linux/mips/mips32/ftruncate64.c
>>  delete mode 100644 sysdeps/unix/sysv/linux/mips/mips64/ftruncate64.c
>>  delete mode 100644 sysdeps/unix/sysv/linux/powerpc/powerpc32/ftruncate64.c
>>  delete mode 100644 sysdeps/unix/sysv/linux/wordsize-64/ftruncate64.c
>>
>> diff --git a/posix/tst-truncate-common.c b/posix/tst-truncate-common.c
>> new file mode 100644
>> index 0000000..80bf277
>> --- /dev/null
>> +++ b/posix/tst-truncate-common.c
>> @@ -0,0 +1,88 @@
>> +/* Common f{truncate} tests definitions.
>> +   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 <unistd.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 ()
>> +
>> +#include <test-skeleton.c>
>> +
>> +static char *temp_filename;
>> +static int temp_fd;
>> +
>> +static void
>> +do_prepare (void)
>> +{
>> +  temp_fd = create_temp_file ("tst-trucate.", &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)
>> +{
>> +  struct stat st;
>> +  char buf[1000];
>> +
>> +  memset (buf, 0xcf, sizeof (buf));
>> +
>> +  if (pwrite (temp_fd, buf, sizeof (buf), offset) != sizeof (buf))
>> +    FAIL ("write failed");
>> +  if (fstat (temp_fd, &st) < 0 || st.st_size != (offset + sizeof (buf)))
>> +    FAIL ("initial size wrong");
>> +
>> +  if (ftruncate (temp_fd, offset + 800) < 0)
>> +    FAIL ("size reduction with ftruncate failed");
>> +  if (fstat (temp_fd, &st) < 0 || st.st_size != (offset + 800))
>> +    FAIL ("size after reduction with ftruncate is incorrect");
>> +
>> +  /* The following test covers more than POSIX.  POSIX does not require
>> +     that ftruncate() can increase the file size.  But we are testing
>> +     Unix systems.  */
>> +  if (ftruncate (temp_fd, offset + 1200) < 0)
>> +    FAIL ("size increate with ftruncate failed");
>> +  if (fstat (temp_fd, &st) < 0 || st.st_size != (offset + 1200))
>> +    FAIL ("size after increase is incorrect");
>> +
>> +  if (truncate (temp_filename, offset + 800) < 0)
>> +    FAIL ("size reduction with truncate failed");
>> +  if (fstat (temp_fd, &st) < 0 || st.st_size != (offset + 800))
>> +    FAIL ("size after reduction with truncate incorrect");
>> +
>> +  /* The following test covers more than POSIX.  POSIX does not require
>> +     that truncate() can increase the file size.  But we are testing
>> +     Unix systems.  */
>> +  if (truncate (temp_filename, (offset + 1200)) < 0)
>> +    FAIL ("size increase with truncate failed");
>> +  if (fstat (temp_fd, &st) < 0 || st.st_size != (offset + 1200))
>> +    FAIL ("size increase with truncate is incorrect");
>> +
>> +  return 0;
>> +}
>> diff --git a/posix/tst-truncate.c b/posix/tst-truncate.c
>> index 99bddb3..3166c3b 100644
>> --- a/posix/tst-truncate.c
>> +++ b/posix/tst-truncate.c
>> @@ -17,116 +17,10 @@
>>     License along with the GNU C Library; if not, see
>>     <http://www.gnu.org/licenses/>.  */
>>  
>> -#include <errno.h>
>> -#include <error.h>
>> -#include <string.h>
>> -#include <unistd.h>
>> -#include <sys/stat.h>
>> +#include "tst-truncate-common.c"
>>  
>> -
>> -/* Allow testing of the 64-bit versions as well.  */
>> -#ifndef TRUNCATE
>> -# define TRUNCATE truncate
>> -# define FTRUNCATE ftruncate
>> -#endif
>> -
>> -#define STRINGIFY(s) STRINGIFY2 (s)
>> -#define STRINGIFY2(s) #s
>> -
>> -/* Prototype for our test function.  */
>> -extern void do_prepare (int argc, char *argv[]);
>> -extern int do_test (int argc, char *argv[]);
>> -
>> -/* We have a preparation function.  */
>> -#define PREPARE do_prepare
>> -
>> -/* We might need a bit longer timeout.  */
>> -#define TIMEOUT 20 /* sec */
>> -
>> -/* This defines the `main' function and some more.  */
>> -#include <test-skeleton.c>
>> -
>> -/* These are for the temporary file we generate.  */
>> -char *name;
>> -int fd;
>> -
>> -void
>> -do_prepare (int argc, char *argv[])
>> +static int
>> +do_test (void)
>>  {
>> -   size_t name_len;
>> -
>> -#define FNAME FNAME2(TRUNCATE)
>> -#define FNAME2(s) "/" STRINGIFY(s) "XXXXXX"
>> -
>> -   name_len = strlen (test_dir);
>> -   name = xmalloc (name_len + sizeof (FNAME));
>> -   mempcpy (mempcpy (name, test_dir, name_len), FNAME, sizeof (FNAME));
>> -   add_temp_file (name);
>> -
>> -   /* Open our test file.   */
>> -   fd = mkstemp (name);
>> -   if (fd == -1)
>> -     error (EXIT_FAILURE, errno, "cannot open test file `%s'", name);
>> -}
>> -
>> -
>> -int
>> -do_test (int argc, char *argv[])
>> -{
>> -  struct stat st;
>> -  char buf[1000];
>> -
>> -  memset (buf, '\0', sizeof (buf));
>> -
>> -  if (write (fd, buf, sizeof (buf)) != sizeof (buf))
>> -    error (EXIT_FAILURE, errno, "during write");
>> -
>> -  if (fstat (fd, &st) < 0 || st.st_size != sizeof (buf))
>> -    error (EXIT_FAILURE, 0, "initial size wrong");
>> -
>> -
>> -  if (FTRUNCATE (fd, 800) < 0)
>> -    error (EXIT_FAILURE, errno, "size reduction with %s failed",
>> -	   STRINGIFY (FTRUNCATE));
>> -
>> -  if (fstat (fd, &st) < 0 || st.st_size != 800)
>> -    error (EXIT_FAILURE, 0, "size after reduction with %s incorrect",
>> -	   STRINGIFY (FTRUNCATE));
>> -
>> -  /* The following test covers more than POSIX.  POSIX does not require
>> -     that ftruncate() can increase the file size.  But we are testing
>> -     Unix systems.  */
>> -  if (FTRUNCATE (fd, 1200) < 0)
>> -    error (EXIT_FAILURE, errno, "size increase with %s failed",
>> -	   STRINGIFY (FTRUNCATE));
>> -
>> -  if (fstat (fd, &st) < 0 || st.st_size != 1200)
>> -    error (EXIT_FAILURE, 0, "size after increase with %s incorrect",
>> -	   STRINGIFY (FTRUNCATE));
>> -
>> -
>> -  if (TRUNCATE (name, 800) < 0)
>> -    error (EXIT_FAILURE, errno, "size reduction with %s failed",
>> -	   STRINGIFY (TRUNCATE));
>> -
>> -  if (fstat (fd, &st) < 0 || st.st_size != 800)
>> -    error (EXIT_FAILURE, 0, "size after reduction with %s incorrect",
>> -	   STRINGIFY (TRUNCATE));
>> -
>> -  /* The following test covers more than POSIX.  POSIX does not require
>> -     that truncate() can increase the file size.  But we are testing
>> -     Unix systems.  */
>> -  if (TRUNCATE (name, 1200) < 0)
>> -    error (EXIT_FAILURE, errno, "size increase with %s failed",
>> -	   STRINGIFY (TRUNCATE));
>> -
>> -  if (fstat (fd, &st) < 0 || st.st_size != 1200)
>> -    error (EXIT_FAILURE, 0, "size after increase with %s incorrect",
>> -	   STRINGIFY (TRUNCATE));
>> -
>> -
>> -  close (fd);
>> -  unlink (name);
>> -
>> -  return 0;
>> +  return do_test_with_offset (0);
>>  }
>> diff --git a/posix/tst-truncate64.c b/posix/tst-truncate64.c
>> index 64eb0a4..08c4942 100644
>> --- a/posix/tst-truncate64.c
>> +++ b/posix/tst-truncate64.c
>> @@ -17,7 +17,22 @@
>>     License along with the GNU C Library; if not, see
>>     <http://www.gnu.org/licenses/>.  */
>>  
>> -#define TRUNCATE truncate64
>> -#define FTRUNCATE ftruncate64
>> +#define _FILE_OFFSET_BITS 64
>> +#include "tst-truncate-common.c"
>>  
>> -#include "tst-truncate.c"
>> +static int
>> +do_test (void)
>> +{
>> +  int ret;
>> +
>> +  ret = do_test_with_offset (0);
>> +  if (ret == -1)
>> +    return -1;
>> +
>> +  off_t base_offset = UINT32_MAX + 512LL;
>> +  ret = do_test_with_offset (base_offset);
>> +  if (ret == -1)
>> +    return 1;
>> +
>> +  return 0;
>> +}
>> diff --git a/sysdeps/unix/sysv/linux/arm/ftruncate64.c b/sysdeps/unix/sysv/linux/arm/ftruncate64.c
>> deleted file mode 100644
>> index 0e8d8ba..0000000
>> --- a/sysdeps/unix/sysv/linux/arm/ftruncate64.c
>> +++ /dev/null
>> @@ -1,36 +0,0 @@
>> -/* Copyright (C) 1997-2016 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 <sys/types.h>
>> -#include <errno.h>
>> -#include <endian.h>
>> -#include <unistd.h>
>> -
>> -#include <sysdep.h>
>> -#include <sys/syscall.h>
>> -
>> -/* Truncate the file FD refers to to LENGTH bytes.  */
>> -int
>> -__ftruncate64 (int fd, off64_t length)
>> -{
>> -  unsigned int low = length & 0xffffffff;
>> -  unsigned int high = length >> 32;
>> -  int result = INLINE_SYSCALL (ftruncate64, 4, fd, 0,
>> -			       __LONG_LONG_PAIR (high, low));
>> -  return result;
>> -}
>> -weak_alias (__ftruncate64, ftruncate64)
>> diff --git a/sysdeps/unix/sysv/linux/ftruncate.c b/sysdeps/unix/sysv/linux/ftruncate.c
>> new file mode 100644
>> index 0000000..5c0cd44
>> --- /dev/null
>> +++ b/sysdeps/unix/sysv/linux/ftruncate.c
>> @@ -0,0 +1,35 @@
>> +/* 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 <unistd.h>
>> +#include <sysdep.h>
>> +#include <errno.h>
>> +
>> +#ifndef __OFF_T_MATCHES_OFF64_T
>> +/* Truncate the file FD refers to LENGTH bytes.  */
>> +int
>> +__ftruncate (int fd, off_t length)
>> +{
>> +# ifndef __NR_ftruncate
>> +  return INLINE_SYSCALL_CALL (ftruncate64, fd,
>> +			      __ALIGNMENT_ARG SYSCALL_LL (length));
>> +# else
>> +  return INLINE_SYSCALL_CALL (ftruncate, fd, length);
>> +# endif
>> +}
>> +weak_alias (__ftruncate, ftruncate)
>> +#endif
>> diff --git a/sysdeps/unix/sysv/linux/ftruncate64.c b/sysdeps/unix/sysv/linux/ftruncate64.c
>> index a6bf878..914ce67 100644
>> --- a/sysdeps/unix/sysv/linux/ftruncate64.c
>> +++ b/sysdeps/unix/sysv/linux/ftruncate64.c
>> @@ -15,22 +15,23 @@
>>     License along with the GNU C Library; if not, see
>>     <http://www.gnu.org/licenses/>.  */
>>  
>> -#include <sys/types.h>
>> -#include <errno.h>
>> -#include <endian.h>
>>  #include <unistd.h>
>> -
>>  #include <sysdep.h>
>> -#include <sys/syscall.h>
>> +#include <errno.h>
>> +
>> +#ifndef __NR_ftruncate64
>> +# define __NR_ftruncate64 __NR_ftruncate
>> +#endif
>>  
>>  /* Truncate the file referenced by FD to LENGTH bytes.  */
>>  int
>>  __ftruncate64 (int fd, off64_t length)
>>  {
>> -  unsigned int low = length & 0xffffffff;
>> -  unsigned int high = length >> 32;
>> -  int result = INLINE_SYSCALL (ftruncate64, 3, fd,
>> -			       __LONG_LONG_PAIR (high, low));
>> -  return result;
>> +  return INLINE_SYSCALL_CALL (ftruncate64, fd,
>> +			      __ALIGNMENT_ARG SYSCALL_LL64 (length));
>>  }
>>  weak_alias (__ftruncate64, ftruncate64)
>> +
>> +#ifdef __OFF_T_MATCHES_OFF64_T
>> +weak_alias (__ftruncate64, ftruncate);
>> +#endif
>> diff --git a/sysdeps/unix/sysv/linux/generic/wordsize-32/ftruncate.c b/sysdeps/unix/sysv/linux/generic/wordsize-32/ftruncate.c
>> deleted file mode 100644
>> index e1b500d..0000000
>> --- a/sysdeps/unix/sysv/linux/generic/wordsize-32/ftruncate.c
>> +++ /dev/null
>> @@ -1,31 +0,0 @@
>> -/* Copyright (C) 2011-2016 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
>> -   <http://www.gnu.org/licenses/>.  */
>> -
>> -#include <errno.h>
>> -#include <sys/types.h>
>> -#include <unistd.h>
>> -
>> -/* Truncate the file FD refers to to LENGTH bytes.  */
>> -int
>> -__ftruncate (int fd, off_t length)
>> -{
>> -  return INLINE_SYSCALL (ftruncate64, __ALIGNMENT_COUNT (3, 4), fd,
>> -                         __ALIGNMENT_ARG
>> -                         __LONG_LONG_PAIR (length >> 31, length));
>> -}
>> -weak_alias (__ftruncate, ftruncate)
>> diff --git a/sysdeps/unix/sysv/linux/generic/wordsize-32/ftruncate64.c b/sysdeps/unix/sysv/linux/generic/wordsize-32/ftruncate64.c
>> deleted file mode 100644
>> index 946f05a..0000000
>> --- a/sysdeps/unix/sysv/linux/generic/wordsize-32/ftruncate64.c
>> +++ /dev/null
>> @@ -1,32 +0,0 @@
>> -/* Copyright (C) 2011-2016 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
>> -   <http://www.gnu.org/licenses/>.  */
>> -
>> -#include <errno.h>
>> -#include <sys/types.h>
>> -#include <unistd.h>
>> -
>> -/* Truncate the file FD refers to to LENGTH bytes.  */
>> -int
>> -__ftruncate64 (int fd, off64_t length)
>> -{
>> -  unsigned int low = length & 0xffffffff;
>> -  unsigned int high = length >> 32;
>> -  return INLINE_SYSCALL (ftruncate64, __ALIGNMENT_COUNT (3, 4), fd,
>> -                         __ALIGNMENT_ARG __LONG_LONG_PAIR (high, low));
>> -}
>> -weak_alias (__ftruncate64, ftruncate64)
>> diff --git a/sysdeps/unix/sysv/linux/mips/mips32/ftruncate64.c b/sysdeps/unix/sysv/linux/mips/mips32/ftruncate64.c
>> deleted file mode 100644
>> index 0e8d8ba..0000000
>> --- a/sysdeps/unix/sysv/linux/mips/mips32/ftruncate64.c
>> +++ /dev/null
>> @@ -1,36 +0,0 @@
>> -/* Copyright (C) 1997-2016 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 <sys/types.h>
>> -#include <errno.h>
>> -#include <endian.h>
>> -#include <unistd.h>
>> -
>> -#include <sysdep.h>
>> -#include <sys/syscall.h>
>> -
>> -/* Truncate the file FD refers to to LENGTH bytes.  */
>> -int
>> -__ftruncate64 (int fd, off64_t length)
>> -{
>> -  unsigned int low = length & 0xffffffff;
>> -  unsigned int high = length >> 32;
>> -  int result = INLINE_SYSCALL (ftruncate64, 4, fd, 0,
>> -			       __LONG_LONG_PAIR (high, low));
>> -  return result;
>> -}
>> -weak_alias (__ftruncate64, ftruncate64)
>> diff --git a/sysdeps/unix/sysv/linux/mips/mips64/ftruncate64.c b/sysdeps/unix/sysv/linux/mips/mips64/ftruncate64.c
>> deleted file mode 100644
>> index 6e25b02..0000000
>> --- a/sysdeps/unix/sysv/linux/mips/mips64/ftruncate64.c
>> +++ /dev/null
>> @@ -1 +0,0 @@
>> -/* Empty.  */
>> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/ftruncate64.c b/sysdeps/unix/sysv/linux/powerpc/powerpc32/ftruncate64.c
>> deleted file mode 100644
>> index 9eee1d7..0000000
>> --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/ftruncate64.c
>> +++ /dev/null
>> @@ -1,36 +0,0 @@
>> -/* Copyright (C) 1997-2016 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 <sys/types.h>
>> -#include <errno.h>
>> -#include <unistd.h>
>> -
>> -#include <sysdep.h>
>> -#include <sys/syscall.h>
>> -
>> -/* Truncate the file referenced by FD to LENGTH bytes.  */
>> -int
>> -__ftruncate64 (int fd, off64_t length)
>> -{
>> -  /* On PPC32 64bit values are aligned in odd/even register pairs.  */
>> -  int result = INLINE_SYSCALL (ftruncate64, 4, fd, 0,
>> -			       (long) (length >> 32),
>> -			       (long) length);
>> -
>> -  return result;
>> -}
>> -weak_alias (__ftruncate64, ftruncate64)
>> diff --git a/sysdeps/unix/sysv/linux/wordsize-64/ftruncate64.c b/sysdeps/unix/sysv/linux/wordsize-64/ftruncate64.c
>> deleted file mode 100644
>> index 673a8b5..0000000
>> --- a/sysdeps/unix/sysv/linux/wordsize-64/ftruncate64.c
>> +++ /dev/null
>> @@ -1 +0,0 @@
>> -/* ftruncate64 is the same as ftruncate. */
>>


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