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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, 11 Oct 2016 11:41:37 -0300
- 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>
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. */
>