Move some chown / lchown / fchown definitions to syscalls.list (bug 14138).

Continuing the move of syscall definitions to syscalls.list, where the
removal of support for old kernel versions has made this possible,
this patch moves various definitions of chown, lchown and fchown.

In most cases the need for special syscalls.list entries (rather than
existing generic ones) is because these architectures use chown32,
lchown32 and fchown32 as syscall names.  Some architectures also have
symbol versioning compatibility for older versions of chown having
been equivalent to lchown.

In the case of powerpc, chown.c (providing the chown@@GLIBC_2.1
default version) is replaced by a syscalls.list entry (for powerpc32;
powerpc64 has no need for this because of its more recent minimum
symbol version, so can just use the entry in
sysdeps/unix/syscalls.list), but lchown.S is left as-is because it
provides the compat version of chown as an actual alias for __lchown,
which is not yet supported by syscalls.list.  This file can be removed
once such aliases are supported in syscalls.list.

	[BZ #14138]
	* sysdeps/unix/sysv/linux/arm/fchown.c: Remove file.
	* sysdeps/unix/sysv/linux/arm/lchown.c: Likewise.
	* sysdeps/unix/sysv/linux/m68k/fchown.c: Likewise.
	* sysdeps/unix/sysv/linux/m68k/lchown.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/chown.c: Likewise.
	* sysdeps/unix/sysv/linux/arm/syscalls.list (lchown): Add syscall.
	(fchown): Likewise.
	* sysdeps/unix/sysv/linux/m68k/syscalls.list (lchown): Likewise.
	(fchown): Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/syscalls.list (chown):
	Likewise.

9 files changed, 21 insertions, 47 deletions

diff --git a/ChangeLog b/ChangeLog
index 0d37530437..5a89797b45 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,18 @@
+2014-10-06  Joseph Myers  <joseph@codesourcery.com>
+
+	[BZ #14138]
+	* sysdeps/unix/sysv/linux/arm/fchown.c: Remove file.
+	* sysdeps/unix/sysv/linux/arm/lchown.c: Likewise.
+	* sysdeps/unix/sysv/linux/m68k/fchown.c: Likewise.
+	* sysdeps/unix/sysv/linux/m68k/lchown.c: Likewise.
+	* sysdeps/unix/sysv/linux/powerpc/chown.c: Likewise.
+	* sysdeps/unix/sysv/linux/arm/syscalls.list (lchown): Add syscall.
+	(fchown): Likewise.
+	* sysdeps/unix/sysv/linux/m68k/syscalls.list (lchown): Likewise.
+	(fchown): Likewise.
+	* sysdeps/unix/sysv/linux/powerpc/powerpc32/syscalls.list (chown):
+	Likewise.
+
 2014-10-06  Adhemerval Zanella  <azanella@linux.vnet.ibm.com>
 
 	* sysdeps/unix/sysv/linux/powerpc/lowlevellock.h: Remove file.
diff --git a/sysdeps/unix/sysv/linux/arm/fchown.c b/sysdeps/unix/sysv/linux/arm/fchown.c
deleted file mode 100644
index 3a69ecc9e7..0000000000
--- a/sysdeps/unix/sysv/linux/arm/fchown.c
+++ /dev/null
@@ -1 +0,0 @@
-#include <sysdeps/unix/sysv/linux/i386/fchown.c>
diff --git a/sysdeps/unix/sysv/linux/arm/lchown.c b/sysdeps/unix/sysv/linux/arm/lchown.c
deleted file mode 100644
index c89de99ba2..0000000000
--- a/sysdeps/unix/sysv/linux/arm/lchown.c
+++ /dev/null
@@ -1 +0,0 @@
-#include <sysdeps/unix/sysv/linux/i386/lchown.c>
diff --git a/sysdeps/unix/sysv/linux/arm/syscalls.list b/sysdeps/unix/sysv/linux/arm/syscalls.list
index ba8cdd7e65..f2133bc404 100644
--- a/sysdeps/unix/sysv/linux/arm/syscalls.list
+++ b/sysdeps/unix/sysv/linux/arm/syscalls.list
@@ -1,6 +1,8 @@
 # File name	Caller	Syscall name	# args	Strong name	Weak names
 
 chown		-	chown32		i:sii	__chown		chown
+lchown		-	lchown32	i:sii	__lchown	lchown
+fchown		-	fchown32	i:iii	__fchown	fchown
 
 prlimit64	EXTRA	prlimit64	i:iipp	prlimit64
 
diff --git a/sysdeps/unix/sysv/linux/m68k/fchown.c b/sysdeps/unix/sysv/linux/m68k/fchown.c
deleted file mode 100644
index 3a69ecc9e7..0000000000
--- a/sysdeps/unix/sysv/linux/m68k/fchown.c
+++ /dev/null
@@ -1 +0,0 @@
-#include <sysdeps/unix/sysv/linux/i386/fchown.c>
diff --git a/sysdeps/unix/sysv/linux/m68k/lchown.c b/sysdeps/unix/sysv/linux/m68k/lchown.c
deleted file mode 100644
index c89de99ba2..0000000000
--- a/sysdeps/unix/sysv/linux/m68k/lchown.c
+++ /dev/null
@@ -1 +0,0 @@
-#include <sysdeps/unix/sysv/linux/i386/lchown.c>
diff --git a/sysdeps/unix/sysv/linux/m68k/syscalls.list b/sysdeps/unix/sysv/linux/m68k/syscalls.list
index aee1011a62..7896b870b8 100644
--- a/sysdeps/unix/sysv/linux/m68k/syscalls.list
+++ b/sysdeps/unix/sysv/linux/m68k/syscalls.list
@@ -1,6 +1,8 @@
 # File name	Caller	Syscall name	Args	Strong name	Weak names
 
 chown		-	chown32		i:sii	__chown		chown
+lchown		-	lchown32	i:sii	__lchown	lchown
+fchown		-	fchown32	i:iii	__fchown	fchown
 waitpid		-	waitpid		Ci:ipi	__waitpid	waitpid	__libc_waitpid
 
 cacheflush	EXTRA	cacheflush	i:iiii	__cacheflush	cacheflush
diff --git a/sysdeps/unix/sysv/linux/powerpc/chown.c b/sysdeps/unix/sysv/linux/powerpc/chown.c
deleted file mode 100644
index 59c6147c25..0000000000
--- a/sysdeps/unix/sysv/linux/powerpc/chown.c
+++ /dev/null
@@ -1,43 +0,0 @@
-/* chown() compatibility.
-   Copyright (C) 1998-2014 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 <string.h>
-#include <unistd.h>
-#include <limits.h>
-#include <sysdep.h>
-#include <stdlib.h>
-
-/* Consider moving to syscalls.list.  */
-
-/*
-  In Linux 2.1.x the chown functions have been changed.  A new function lchown
-  was introduced.  The new chown now follows symlinks - the old chown and the
-  new lchown do not follow symlinks.
-  This file emulates chown() under the old kernels.
-*/
-
-int
-__chown (const char *file, uid_t owner, gid_t group)
-{
-  return INLINE_SYSCALL (chown, 3, file, owner, group);
-}
-libc_hidden_def (__chown)
-
-#include <shlib-compat.h>
-versioned_symbol (libc, __chown, chown, GLIBC_2_1);
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/syscalls.list b/sysdeps/unix/sysv/linux/powerpc/powerpc32/syscalls.list
index fb6535aa8a..25487cc3e0 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/syscalls.list
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/syscalls.list
@@ -1,5 +1,7 @@
 # File name	Caller	Syscall name	# args	Strong name	Weak names
 
+chown		-	chown		i:sii	__chown		chown@@GLIBC_2.1
+
 # System calls with wrappers.
 oldgetrlimit	EXTRA	getrlimit	i:ip	__old_getrlimit	getrlimit@GLIBC_2.0
 oldsetrlimit	EXTRA	setrlimit	i:ip	__old_setrlimit	setrlimit@GLIBC_2.0