Remove __ASSUME_TRUNCATE64_SYSCALL.

6 files changed, 54 insertions, 194 deletions

diff --git a/ChangeLog b/ChangeLog
index bc1401b1ec..cf0d9e79ae 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,32 @@
 2012-05-30  Joseph Myers  <joseph@codesourcery.com>
 
+	* sysdeps/unix/sysv/linux/kernel-features.h
+	(__ASSUME_TRUNCATE64_SYSCALL): Remove all definitions.
+	* sysdeps/unix/sysv/linux/ftruncate64.c: Do not
+	include <kernel-features.h>.
+	[!__NR_ftruncate64]: Remove conditional code.
+	[!__ASSUME_TRUNCATE64_SYSCALL]: Likewise.
+	[__NR_ftruncate64]: Make code unconditional.
+	[__ASSUME_TRUNCATE64_SYSCALL]: Likewise.
+	* sysdeps/unix/sysv/linux/truncate64.c: Do not
+	include <kernel-features.h>.
+	[!__NR_ftruncate64]: Remove conditional code.
+	[!__ASSUME_TRUNCATE64_SYSCALL]: Likewise.
+	[__NR_ftruncate64]: Make code unconditional.
+	[__ASSUME_TRUNCATE64_SYSCALL]: Likewise.
+	* sysdeps/unix/sysv/linux/powerpc/powerpc32/ftruncate64.c: Do not
+	include <kernel-features.h>.
+	[!__NR_ftruncate64]: Remove conditional code.
+	[!__ASSUME_TRUNCATE64_SYSCALL]: Likewise.
+	[__NR_ftruncate64]: Make code unconditional.
+	[__ASSUME_TRUNCATE64_SYSCALL]: Likewise.
+	* sysdeps/unix/sysv/linux/powerpc/powerpc32/truncate64.c: Do not
+	include <kernel-features.h>.
+	[!__NR_ftruncate64]: Remove conditional code.
+	[!__ASSUME_TRUNCATE64_SYSCALL]: Likewise.
+	[__NR_ftruncate64]: Make code unconditional.
+	[__ASSUME_TRUNCATE64_SYSCALL]: Likewise.
+
 	* configure.in (libc_cv_fpie): Weaken to a compile test using
 	LIBC_TRY_CC_OPTION.
 	* configure: Regenerated.
diff --git a/sysdeps/unix/sysv/linux/ftruncate64.c b/sysdeps/unix/sysv/linux/ftruncate64.c
index 719f025929..af05a4bbba 100644
--- a/sysdeps/unix/sysv/linux/ftruncate64.c
+++ b/sysdeps/unix/sysv/linux/ftruncate64.c
@@ -1,5 +1,4 @@
-/* Copyright (C) 1997,1998,1999,2000,2001,2003,2005,2006,2011
-	 Free Software Foundation, Inc.
+/* Copyright (C) 1997-2012 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
@@ -24,53 +23,14 @@
 #include <sysdep.h>
 #include <sys/syscall.h>
 
-#include <kernel-features.h>
-
-#ifdef __NR_ftruncate64
-#ifndef __ASSUME_TRUNCATE64_SYSCALL
-/* The variable is shared between all wrappers around *truncate64 calls.  */
-extern int __have_no_truncate64;
-#endif
-
-
 /* Truncate the file referenced by FD to LENGTH bytes.  */
 int
 __ftruncate64 (int fd, off64_t length)
 {
-#ifndef __ASSUME_TRUNCATE64_SYSCALL
-  if (! __have_no_truncate64)
-#endif
-    {
-      unsigned int low = length & 0xffffffff;
-      unsigned int high = length >> 32;
-#ifndef __ASSUME_TRUNCATE64_SYSCALL
-      int saved_errno = errno;
-#endif
-      int result = INLINE_SYSCALL (ftruncate64, 3, fd,
-				   __LONG_LONG_PAIR (high, low));
-#ifndef __ASSUME_TRUNCATE64_SYSCALL
-      if (result != -1 || errno != ENOSYS)
-#endif
-	return result;
-
-#ifndef __ASSUME_TRUNCATE64_SYSCALL
-      __set_errno (saved_errno);
-      __have_no_truncate64 = 1;
-#endif
-    }
-
-#ifndef __ASSUME_TRUNCATE64_SYSCALL
-  if ((off_t) length != length)
-    {
-      __set_errno (EINVAL);
-      return -1;
-    }
-  return __ftruncate (fd, (off_t) length);
-#endif
+  unsigned int low = length & 0xffffffff;
+  unsigned int high = length >> 32;
+  int result = INLINE_SYSCALL (ftruncate64, 3, fd,
+			       __LONG_LONG_PAIR (high, low));
+  return result;
 }
 weak_alias (__ftruncate64, ftruncate64)
-
-#else
-/* Use the generic implementation.  */
-# include <misc/ftruncate64.c>
-#endif
diff --git a/sysdeps/unix/sysv/linux/kernel-features.h b/sysdeps/unix/sysv/linux/kernel-features.h
index 0ea453d999..4d333e81ec 100644
--- a/sysdeps/unix/sysv/linux/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/kernel-features.h
@@ -40,11 +40,6 @@
 /* The sendfile syscall was introduced in 2.2.0.  */
 #define __ASSUME_SENDFILE		1
 
-/* On x86 the truncate64/ftruncate64 syscalls were introduced in 2.3.31.  */
-#ifdef __i386__
-# define __ASSUME_TRUNCATE64_SYSCALL	1
-#endif
-
 /* On x86 the mmap2 syscall was introduced in 2.3.31.  */
 #ifdef __i386__
 # define __ASSUME_MMAP2_SYSCALL	1
@@ -55,10 +50,9 @@
 # define __ASSUME_STAT64_SYSCALL	1
 #endif
 
-/* On sparc the truncate64/ftruncate64/mmap2/stat64/lstat64/fstat64
-   syscalls were introduced in 2.3.35.  */
+/* On sparc the mmap2/stat64/lstat64/fstat64 syscalls were introduced
+   in 2.3.35.  */
 #if defined __sparc__ && !defined __arch64__
-# define __ASSUME_TRUNCATE64_SYSCALL	1
 # define __ASSUME_MMAP2_SYSCALL		1
 # define __ASSUME_STAT64_SYSCALL	1
 #endif
@@ -66,7 +60,6 @@
 /* I know for sure that these are in 2.3.35 on powerpc. But PowerPC64 does not
    support separate 64-bit syscalls, already 64-bit.  */
 #if defined __powerpc__ && !defined __powerpc64__
-# define __ASSUME_TRUNCATE64_SYSCALL	1
 # define __ASSUME_STAT64_SYSCALL	1
 #endif
 
@@ -77,9 +70,8 @@
 # define __ASSUME_IPC64		1
 #endif
 
-/* SH kernels got stat64, mmap2, and truncate64 during 2.4.0-test.  */
+/* SH kernels got stat64 and mmap2 during 2.4.0-test.  */
 #ifdef __sh__
-# define __ASSUME_TRUNCATE64_SYSCALL	1
 # define __ASSUME_MMAP2_SYSCALL		1
 # define __ASSUME_STAT64_SYSCALL	1
 #endif
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/ftruncate64.c b/sysdeps/unix/sysv/linux/powerpc/powerpc32/ftruncate64.c
index 0b696635a7..494d898b2f 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/ftruncate64.c
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/ftruncate64.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1997-2002,2005,2006,2011 Free Software Foundation, Inc.
+/* Copyright (C) 1997-2012 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
@@ -22,56 +22,17 @@
 #include <sysdep.h>
 #include <sys/syscall.h>
 
-#include <kernel-features.h>
-
-#ifdef __NR_ftruncate64
-#ifndef __ASSUME_TRUNCATE64_SYSCALL
-/* The variable is shared between all wrappers around *truncate64 calls.  */
-extern int __have_no_truncate64;
-#endif
-
-
 /* Truncate the file referenced by FD to LENGTH bytes.  */
 int
 __ftruncate64 (fd, length)
      int fd;
      off64_t length;
 {
-#ifndef __ASSUME_TRUNCATE64_SYSCALL
-  if (! __have_no_truncate64)
-#endif
-    {
-#ifndef __ASSUME_TRUNCATE64_SYSCALL
-      int saved_errno = errno;
-#endif
-      /* On PPC32 64bit values are aligned in odd/even register pairs.  */
-      int result = INLINE_SYSCALL (ftruncate64, 4, fd, 0,
-				   (long) (length >> 32),
-				   (long) 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);
 
-#ifndef __ASSUME_TRUNCATE64_SYSCALL
-      if (result != -1 || errno != ENOSYS)
-#endif
-	return result;
-
-#ifndef __ASSUME_TRUNCATE64_SYSCALL
-      __set_errno (saved_errno);
-      __have_no_truncate64 = 1;
-#endif
-    }
-
-#ifndef __ASSUME_TRUNCATE64_SYSCALL
-  if ((off_t) length != length)
-    {
-      __set_errno (EINVAL);
-      return -1;
-    }
-  return __ftruncate (fd, (off_t) length);
-#endif
+  return result;
 }
 weak_alias (__ftruncate64, ftruncate64)
-
-#else
-/* Use the generic implementation.  */
-# include <misc/ftruncate64.c>
-#endif
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/truncate64.c b/sysdeps/unix/sysv/linux/powerpc/powerpc32/truncate64.c
index 316d59c337..c9f66164ce 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/truncate64.c
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/truncate64.c
@@ -1,5 +1,4 @@
-/* Copyright (C) 1997,1998,1999,2000,2002,2005,2006,2011
-	Free Software Foundation, Inc.
+/* Copyright (C) 1997-2012 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
@@ -24,55 +23,15 @@
 #include <sys/syscall.h>
 #include <bp-checks.h>
 
-#include <kernel-features.h>
-
-#ifdef __NR_truncate64
-#ifndef __ASSUME_TRUNCATE64_SYSCALL
-/* The variable is shared between all wrappers around *truncate64 calls.  */
-int __have_no_truncate64;
-#endif
-
-
 /* Truncate the file referenced by FD to LENGTH bytes.  */
 int
 truncate64 (path, length)
      const char *path;
      off64_t length;
 {
-#ifndef __ASSUME_TRUNCATE64_SYSCALL
-  if (! __have_no_truncate64)
-#endif
-    {
-#ifndef __ASSUME_TRUNCATE64_SYSCALL
-      int saved_errno = errno;
-#endif
-      /* On PPC32 64bit values are aligned in odd/even register pairs.  */
-      int result = INLINE_SYSCALL (truncate64, 4, CHECK_STRING (path), 0,
-				   (long) (length >> 32),
-				   (long) length);
-
-#ifndef __ASSUME_TRUNCATE64_SYSCALL
-      if (result != -1 || errno != ENOSYS)
-#endif
-	return result;
-
-#ifndef __ASSUME_TRUNCATE64_SYSCALL
-      __set_errno (saved_errno);
-      __have_no_truncate64 = 1;
-#endif
-    }
-
-#ifndef __ASSUME_TRUNCATE64_SYSCALL
-  if ((off_t) length != length)
-    {
-      __set_errno (EINVAL);
-      return -1;
-    }
-  return __truncate (path, (off_t) length);
-#endif
+  /* On PPC32 64bit values are aligned in odd/even register pairs.  */
+  int result = INLINE_SYSCALL (truncate64, 4, CHECK_STRING (path), 0,
+			       (long) (length >> 32),
+			       (long) length);
+  return result;
 }
-
-#else
-/* Use the generic implementation.  */
-# include <misc/truncate64.c>
-#endif
diff --git a/sysdeps/unix/sysv/linux/truncate64.c b/sysdeps/unix/sysv/linux/truncate64.c
index 12ae4b5dd3..b31b74d1de 100644
--- a/sysdeps/unix/sysv/linux/truncate64.c
+++ b/sysdeps/unix/sysv/linux/truncate64.c
@@ -1,5 +1,4 @@
-/* Copyright (C) 1997-2000,2003,2004,2005,2006,2011
-	Free Software Foundation, Inc.
+/* Copyright (C) 1997-2012 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
@@ -25,51 +24,13 @@
 #include <sys/syscall.h>
 #include <bp-checks.h>
 
-#include <kernel-features.h>
-
-#ifdef __NR_truncate64
-#ifndef __ASSUME_TRUNCATE64_SYSCALL
-/* The variable is shared between all wrappers around *truncate64 calls.  */
-int __have_no_truncate64;
-#endif
-
 /* Truncate the file referenced by FD to LENGTH bytes.  */
 int
 truncate64 (const char *path, off64_t length)
 {
-#ifndef __ASSUME_TRUNCATE64_SYSCALL
-  if (! __have_no_truncate64)
-#endif
-    {
-      unsigned int low = length & 0xffffffff;
-      unsigned int high = length >> 32;
-#ifndef __ASSUME_TRUNCATE64_SYSCALL
-      int saved_errno = errno;
-#endif
-      int result = INLINE_SYSCALL (truncate64, 3, CHECK_STRING (path),
-				   __LONG_LONG_PAIR (high, low));
-#ifndef __ASSUME_TRUNCATE64_SYSCALL
-      if (result != -1 || errno != ENOSYS)
-#endif
-	return result;
-
-#ifndef __ASSUME_TRUNCATE64_SYSCALL
-      __set_errno (saved_errno);
-      __have_no_truncate64 = 1;
-#endif
-    }
-
-#ifndef __ASSUME_TRUNCATE64_SYSCALL
-  if ((off_t) length != length)
-    {
-      __set_errno (EINVAL);
-      return -1;
-    }
-  return __truncate (path, (off_t) length);
-#endif
+  unsigned int low = length & 0xffffffff;
+  unsigned int high = length >> 32;
+  int result = INLINE_SYSCALL (truncate64, 3, CHECK_STRING (path),
+			       __LONG_LONG_PAIR (high, low));
+  return result;
 }
-
-#else
-/* Use the generic implementation.  */
-# include <misc/truncate64.c>
-#endif