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Re: [PATCH 3/4] Consolidate Linux ftruncate implementations
- From: Adhemerval Zanella <adhemerval dot zanella at linaro dot org>
- To: libc-alpha at sourceware dot org
- Date: Tue, 25 Oct 2016 15:53:56 -0200
- Subject: Re: [PATCH 3/4] Consolidate Linux ftruncate implementations
- Authentication-results: sourceware.org; auth=none
- References: <1474383714-15187-1-git-send-email-adhemerval.zanella@linaro.org> <1474383714-15187-4-git-send-email-adhemerval.zanella@linaro.org> <233a183a-8327-4077-77ad-f90d20505f2e@linaro.org>
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. */
>>