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.

The aliases specified for s390-32 had the effect of exporting
__chown@@GLIBC_2.1 (but not __chown@GLIBC_2.0) despite it not being
listed in Versions files.  (I'm not sure why versioned_symbol but not
compat_symbol were effective like that to create such __chown exports
in the absence of Versions entries.)  The natural way to preserve that
versioned export of __chown seems to be to add it in a Versions file,
so I did so.  (Maybe actually it should be a compat symbol,
__chown@GLIBC_2.1, unless there's a good reason for that export, but
this patch doesn't change anything there.)

Tested for x86.

	[BZ #14138]
	* sysdeps/unix/sysv/linux/i386/chown.c: Remove file.
	* sysdeps/unix/sysv/linux/i386/fchown.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/lchown.c: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/chown.c: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/fchown.c: Remove file.
	* sysdeps/unix/sysv/linux/s390/s390-32/lchown.c: Likewise.
	* sysdeps/unix/sysv/linux/sh/chown.c: Likewise.
	* sysdeps/unix/sysv/linux/sh/fchown.c: Likewise.
	* sysdeps/unix/sysv/linux/sh/lchown.c: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/chown.c: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/fchown.c: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/lchown.c: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/Versions (GLIBC_2.1): Add
	__chown.
	* sysdeps/unix/sysv/linux/i386/syscalls.list (chown): Add syscall.
	(lchown): Likewise.
	(fchown): Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/syscalls.list (chown):
	Likewise.
	(lchown): Likewise.
	(fchown): Likewise.
	* sysdeps/unix/sysv/linux/sh/syscalls.list (chown): Likewise.
	(lchown): Likewise.
	(fchown): Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/syscalls.list (chown):
	Likewise.
	(lchown): Likewise.
	(fchown): Likewise.

17 files changed, 19 insertions, 280 deletions

diff --git a/sysdeps/unix/sysv/linux/i386/chown.c b/sysdeps/unix/sysv/linux/i386/chown.c
deleted file mode 100644
index 4f63b2c..0000000
--- a/sysdeps/unix/sysv/linux/i386/chown.c
+++ /dev/null
@@ -1,67 +0,0 @@
-/* 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 <unistd.h>
-
-#include <sysdep.h>
-#include <sys/syscall.h>
-#include <shlib-compat.h>
-
-#include <linux/posix_types.h>
-
-/*
-  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.
-  The new lchown function has the same number as the old chown had and the
-  new chown has a new number.  When compiling with headers from Linux > 2.1.8x
-  it's impossible to run this libc with older kernels.  In these cases libc
-  has therefore to route calls to chown to the old chown function.
-*/
-
-extern int __chown_is_lchown (const char *__file, uid_t __owner,
-			      gid_t __group);
-extern int __real_chown (const char *__file, uid_t __owner, gid_t __group);
-
-
-/* Consider moving to syscalls.list.  */
-
-int
-__real_chown (const char *file, uid_t owner, gid_t group)
-{
-  return INLINE_SYSCALL (chown32, 3, file, owner, group);
-}
-
-
-#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
-/* Compiling for compatibility.  */
-int
-attribute_compat_text_section
-__chown_is_lchown (const char *file, uid_t owner, gid_t group)
-{
-  return __lchown (file, owner, group);
-}
-#endif
-
-#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
-compat_symbol (libc, __chown_is_lchown, chown, GLIBC_2_0);
-#endif
-
-versioned_symbol (libc, __real_chown, chown, GLIBC_2_1);
-strong_alias (__real_chown, __chown)
-libc_hidden_def (__chown)
diff --git a/sysdeps/unix/sysv/linux/i386/fchown.c b/sysdeps/unix/sysv/linux/i386/fchown.c
deleted file mode 100644
index 7fbfd93..0000000
--- a/sysdeps/unix/sysv/linux/i386/fchown.c
+++ /dev/null
@@ -1,34 +0,0 @@
-/* Copyright (C) 2000-2014 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 <unistd.h>
-
-#include <sysdep.h>
-#include <sys/syscall.h>
-
-#include <linux/posix_types.h>
-
-/* Consider moving to syscalls.list.  */
-
-int
-__fchown (int fd, uid_t owner, gid_t group)
-{
-  return INLINE_SYSCALL (fchown32, 3, fd, owner, group);
-}
-
-weak_alias (__fchown, fchown)
diff --git a/sysdeps/unix/sysv/linux/i386/lchown.c b/sysdeps/unix/sysv/linux/i386/lchown.c
deleted file mode 100644
index cfa7e97..0000000
--- a/sysdeps/unix/sysv/linux/i386/lchown.c
+++ /dev/null
@@ -1,34 +0,0 @@
-/* Copyright (C) 2000-2014 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 <unistd.h>
-
-#include <sysdep.h>
-#include <sys/syscall.h>
-
-#include <linux/posix_types.h>
-
-/* Consider moving to syscalls.list.  */
-
-int
-__lchown (const char *file, uid_t owner, gid_t group)
-{
-  return INLINE_SYSCALL (lchown32, 3, file, owner, group);
-}
-
-weak_alias (__lchown, lchown)
diff --git a/sysdeps/unix/sysv/linux/i386/syscalls.list b/sysdeps/unix/sysv/linux/i386/syscalls.list
index 0d3eabe..db375a8 100644
--- a/sysdeps/unix/sysv/linux/i386/syscalls.list
+++ b/sysdeps/unix/sysv/linux/i386/syscalls.list
@@ -1,5 +1,9 @@
 # File name	Caller	Syscall name	Args	Strong name	Weak names
 
+chown		-	chown32		i:sii	__chown		chown@@GLIBC_2.1
+lchown		-	lchown32	i:sii	__lchown	lchown@@GLIBC_2.0 chown@GLIBC_2.0
+fchown		-	fchown32	i:iii	__fchown	fchown
+
 modify_ldt	EXTRA	modify_ldt	i:ipi	__modify_ldt	modify_ldt
 vm86old		EXTRA	vm86old		i:p	__vm86old	vm86@GLIBC_2.0
 vm86		-	vm86		i:ip	__vm86		vm86@@GLIBC_2.3.4
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/Versions b/sysdeps/unix/sysv/linux/s390/s390-32/Versions
index 24e0b1d4..1c120e8 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/Versions
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/Versions
@@ -4,6 +4,9 @@ libc {
     __register_frame; __register_frame_table; __deregister_frame;
     __frame_state_for; __register_frame_info_table;
   }
+  GLIBC_2.1 {
+    __chown;
+  }
   GLIBC_2.2 {
     # functions used in other libraries
     __xstat64; __fxstat64; __lxstat64;
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/chown.c b/sysdeps/unix/sysv/linux/s390/s390-32/chown.c
deleted file mode 100644
index 1fee84a..0000000
--- a/sysdeps/unix/sysv/linux/s390/s390-32/chown.c
+++ /dev/null
@@ -1,71 +0,0 @@
-/* Copyright (C) 2000-2014 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 <unistd.h>
-
-#include <sysdep.h>
-#include <sys/syscall.h>
-#include <shlib-compat.h>
-
-#include <linux/posix_types.h>
-
-/*
-  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.
-  The new lchown function has the same number as the old chown had and the
-  new chown has a new number.  When compiling with headers from Linux > 2.1.8x
-  it's impossible to run this libc with older kernels.  In these cases libc
-  has therefore to route calls to chown to the old chown function.
-*/
-
-/* Running under Linux > 2.1.80.  */
-
-/* Consider moving to syscalls.list.  */
-
-int
-__real_chown (const char *file, uid_t owner, gid_t group)
-{
-  return INLINE_SYSCALL (chown32, 3, file, owner, group);
-}
-
-
-#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
-/* Compiling for compatibility.  */
-int
-attribute_compat_text_section
-__chown_is_lchown (const char *file, uid_t owner, gid_t group)
-{
-  return __lchown (file, owner, group);
-}
-#endif
-
-#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
-strong_alias (__chown_is_lchown, _chown_is_lchown)
-compat_symbol (libc, __chown_is_lchown, __chown, GLIBC_2_0);
-compat_symbol (libc, _chown_is_lchown, chown, GLIBC_2_0);
-
-strong_alias (__real_chown, _real_chown)
-versioned_symbol (libc, __real_chown, __chown, GLIBC_2_1);
-versioned_symbol (libc, _real_chown, chown, GLIBC_2_1);
-libc_hidden_ver (__real_chown, __chown)
-#else
-strong_alias (__real_chown, __chown)
-libc_hidden_def (__chown)
-weak_alias (__real_chown, chown)
-#endif
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/fchown.c b/sysdeps/unix/sysv/linux/s390/s390-32/fchown.c
deleted file mode 100644
index 3a69ecc..0000000
--- a/sysdeps/unix/sysv/linux/s390/s390-32/fchown.c
+++ /dev/null
@@ -1 +0,0 @@
-#include <sysdeps/unix/sysv/linux/i386/fchown.c>
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/lchown.c b/sysdeps/unix/sysv/linux/s390/s390-32/lchown.c
deleted file mode 100644
index cfa7e97..0000000
--- a/sysdeps/unix/sysv/linux/s390/s390-32/lchown.c
+++ /dev/null
@@ -1,34 +0,0 @@
-/* Copyright (C) 2000-2014 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 <unistd.h>
-
-#include <sysdep.h>
-#include <sys/syscall.h>
-
-#include <linux/posix_types.h>
-
-/* Consider moving to syscalls.list.  */
-
-int
-__lchown (const char *file, uid_t owner, gid_t group)
-{
-  return INLINE_SYSCALL (lchown32, 3, file, owner, group);
-}
-
-weak_alias (__lchown, lchown)
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/syscalls.list b/sysdeps/unix/sysv/linux/s390/s390-32/syscalls.list
index 902491c..7a6015a 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/syscalls.list
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/syscalls.list
@@ -1,5 +1,9 @@
 # File name	Caller	Syscall name	Args	Strong name	Weak names
 
+chown		-	chown32		i:sii	__chown		chown@@GLIBC_2.1
+lchown		-	lchown32	i:sii	__lchown	lchown@@GLIBC_2.0 chown@GLIBC_2.0
+fchown		-	fchown32	i:iii	__fchown	fchown
+
 oldgetrlimit	EXTRA	getrlimit	i:ip	__old_getrlimit	getrlimit@GLIBC_2.0
 setrlimit	-	setrlimit	i:ip	__setrlimit	setrlimit@GLIBC_2.0 setrlimit@@GLIBC_2.2
 
diff --git a/sysdeps/unix/sysv/linux/sh/chown.c b/sysdeps/unix/sysv/linux/sh/chown.c
deleted file mode 100644
index 27be894..0000000
--- a/sysdeps/unix/sysv/linux/sh/chown.c
+++ /dev/null
@@ -1,34 +0,0 @@
-/* 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 <unistd.h>
-
-#include <sysdep.h>
-#include <sys/syscall.h>
-
-#include <linux/posix_types.h>
-
-/* Consider moving to syscalls.list.  */
-
-int
-__chown (const char *file, uid_t owner, gid_t group)
-{
-  return INLINE_SYSCALL (chown32, 3, file, owner, group);
-}
-libc_hidden_def (__chown)
-weak_alias (__chown, chown)
diff --git a/sysdeps/unix/sysv/linux/sh/fchown.c b/sysdeps/unix/sysv/linux/sh/fchown.c
deleted file mode 100644
index 3a69ecc..0000000
--- a/sysdeps/unix/sysv/linux/sh/fchown.c
+++ /dev/null
@@ -1 +0,0 @@
-#include <sysdeps/unix/sysv/linux/i386/fchown.c>
diff --git a/sysdeps/unix/sysv/linux/sh/lchown.c b/sysdeps/unix/sysv/linux/sh/lchown.c
deleted file mode 100644
index c89de99..0000000
--- a/sysdeps/unix/sysv/linux/sh/lchown.c
+++ /dev/null
@@ -1 +0,0 @@
-#include <sysdeps/unix/sysv/linux/i386/lchown.c>
diff --git a/sysdeps/unix/sysv/linux/sh/syscalls.list b/sysdeps/unix/sysv/linux/sh/syscalls.list
index faffe37..899d4e7 100644
--- a/sysdeps/unix/sysv/linux/sh/syscalls.list
+++ b/sysdeps/unix/sysv/linux/sh/syscalls.list
@@ -1,5 +1,9 @@
 # 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
 
 prlimit64	EXTRA	prlimit64	i:iipp	prlimit64
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/chown.c b/sysdeps/unix/sysv/linux/sparc/sparc32/chown.c
deleted file mode 100644
index 3741316..0000000
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/chown.c
+++ /dev/null
@@ -1 +0,0 @@
-#include <sysdeps/unix/sysv/linux/sh/chown.c>
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/fchown.c b/sysdeps/unix/sysv/linux/sparc/sparc32/fchown.c
deleted file mode 100644
index 3a69ecc..0000000
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/fchown.c
+++ /dev/null
@@ -1 +0,0 @@
-#include <sysdeps/unix/sysv/linux/i386/fchown.c>
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/lchown.c b/sysdeps/unix/sysv/linux/sparc/sparc32/lchown.c
deleted file mode 100644
index c89de99..0000000
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/lchown.c
+++ /dev/null
@@ -1 +0,0 @@
-#include <sysdeps/unix/sysv/linux/i386/lchown.c>
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/syscalls.list b/sysdeps/unix/sysv/linux/sparc/sparc32/syscalls.list
index 3d70185..e71a044 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/syscalls.list
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/syscalls.list
@@ -1,5 +1,9 @@
 # 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
+
 setrlimit	-	setrlimit	2	__setrlimit	setrlimit
 getrlimit	-	getrlimit	2	__getrlimit	getrlimit
 getresuid	-	getresuid32	3	getresuid