Update.

1998-03-09 08:21  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/unix/sysv/linux/chown.c: Moved to ...
	* sysdeps/unix/sysv/linux/i386/chown.c: ...here.

	* sysdeps/unix/sysv/linux/i386/chown.c: Correct versioning information.
	* libc.map: Add chown to GLIBC_2.1.
	* sysdeps/unix/sysv/linux/i386/syscalls.list: Add s_chown here.
	* sysdeps/unix/sysv/linux/syscalls.list: Remove s_chown here.

1998-03-06  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/generic/ffs.S: Rename function to __ffs and make ffs a
	weak alias.
	* sysdeps/alpha/ffs.c: Likewise.
	* sysdeps/am29k/ffs.c: Likewise.
	* sysdeps/i386/ffs.c: Likewise.
	* sysdeps/i960/ffs.c: Likewise.
	* sysdeps/m68k/ffs.c: Likewise.
	* sysdeps/m88k/ffs.c: Likewise.
	* sysdeps/powerpc/ffs.c: Likewise.
	* sysdeps/rs6000/ffs.c: Likewise.
	* sysdeps/vax/ffs.s: Likewise.
	* string/string.h: Declare __ffs.
	* libc.map: Export it.
	* elf/dl-profile.c (_dl_start_profile): Use __ffs instead of
	__builtin_ffs, which is not guaranteed to be namespace clean.

1998-03-06  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* elf/sprof.c: Rewrite symbol handling to use the normal symbol
	table, which is much more likely to exist than debugging symbols.
	(printsym): Remove const.
	(load_shobj): Don't use _dl_pagesize.  Fix mapping of section
	header table.

	* libc.map: Export __profile_frequency, used by elf/sprof, to
	avoid infinite recursion during startup.

1998-03-09 12:16  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

13 files changed, 117 insertions, 12 deletions

diff --git a/sysdeps/alpha/ffs.S b/sysdeps/alpha/ffs.S
index 23dff6e06b..6eb3afdff7 100644
--- a/sysdeps/alpha/ffs.S
+++ b/sysdeps/alpha/ffs.S
@@ -25,7 +25,7 @@
 	.set noreorder
 	.set noat
 
-ENTRY(ffs)
+ENTRY(__ffs)
 #ifdef PROF
 	ldgp	gp, 0(pv)
 	lda	AT, _mcount
@@ -69,4 +69,5 @@ ENTRY(ffs)
 
 $done:	ret
 
-	END(ffs)
+	END(__ffs)
+weak_alias (__ffs, ffs)
diff --git a/sysdeps/am29k/ffs.c b/sysdeps/am29k/ffs.c
index fe656e1697..bccec883df 100644
--- a/sysdeps/am29k/ffs.c
+++ b/sysdeps/am29k/ffs.c
@@ -26,7 +26,7 @@
 #ifdef	__GNUC__
 
 int
-ffs (x)
+__ffs (x)
      int x;
 {
   int cnt;
@@ -35,6 +35,7 @@ ffs (x)
 
   return 32 - cnt;
 }
+weak_alias (__ffs, ffs)
 
 #else
 #include <sysdeps/generic/ffs.c>
diff --git a/sysdeps/generic/ffs.c b/sysdeps/generic/ffs.c
index 8e1c699f51..35cf218c4b 100644
--- a/sysdeps/generic/ffs.c
+++ b/sysdeps/generic/ffs.c
@@ -24,7 +24,7 @@
 
 /* Find the first bit set in I.  */
 int
-ffs (i)
+__ffs (i)
      int i;
 {
   static const unsigned char table[] =
@@ -45,3 +45,4 @@ ffs (i)
 
   return table[x >> a] + a;
 }
+weak_alias (__ffs, ffs)
diff --git a/sysdeps/i386/ffs.c b/sysdeps/i386/ffs.c
index 411439d0cd..4f46dc7256 100644
--- a/sysdeps/i386/ffs.c
+++ b/sysdeps/i386/ffs.c
@@ -26,7 +26,7 @@
 #ifdef	__GNUC__
 
 int
-ffs (x)
+__ffs (x)
      int x;
 {
   int cnt;
@@ -40,6 +40,7 @@ ffs (x)
 
   return cnt;
 }
+weak_alias (__ffs, ffs)
 
 #else
 #include <sysdeps/generic/ffs.c>
diff --git a/sysdeps/i960/ffs.c b/sysdeps/i960/ffs.c
index 7846c4b1db..dc09ba90e8 100644
--- a/sysdeps/i960/ffs.c
+++ b/sysdeps/i960/ffs.c
@@ -27,7 +27,7 @@
 #if	defined (__GNUC__) && defined (__i960__)
 
 int
-ffs (x)
+__ffs (x)
      int x;
 {
   int cnt;
@@ -36,6 +36,7 @@ ffs (x)
 
   return cnt;
 }
+weak_alias (__ffs, ffs)
 
 #else
 
diff --git a/sysdeps/m68k/ffs.c b/sysdeps/m68k/ffs.c
index 26044b12ec..d30bd9d6ff 100644
--- a/sysdeps/m68k/ffs.c
+++ b/sysdeps/m68k/ffs.c
@@ -26,7 +26,7 @@
 #if	defined (__GNUC__) && defined (__mc68020__)
 
 int
-ffs (x)
+__ffs (x)
      int x;
 {
   int cnt;
@@ -35,6 +35,7 @@ ffs (x)
 
   return 32 - cnt;
 }
+weak_alias (__ffs, ffs)
 
 #else
 
diff --git a/sysdeps/m88k/ffs.c b/sysdeps/m88k/ffs.c
index 3658f0882d..7aac897735 100644
--- a/sysdeps/m88k/ffs.c
+++ b/sysdeps/m88k/ffs.c
@@ -26,7 +26,7 @@
 #ifdef	__GNUC__
 
 int
-ffs (x)
+__ffs (x)
      int x;
 {
   int cnt;
@@ -37,6 +37,7 @@ ffs (x)
   asm ("ff1 %0,%1" : "=r" (cnt) : "r" (x & -x));
   return cnt + 1;
 }
+weak_alias (__ffs, ffs)
 
 #else
 #include <sysdeps/generic/ffs.c>
diff --git a/sysdeps/powerpc/ffs.c b/sysdeps/powerpc/ffs.c
index 1e65bea459..2ae12e6338 100644
--- a/sysdeps/powerpc/ffs.c
+++ b/sysdeps/powerpc/ffs.c
@@ -21,10 +21,11 @@
 #include <string.h>
 
 int
-ffs (int x)
+__ffs (int x)
 {
   int cnt;
 
   asm ("cntlzw %0,%1" : "=r" (cnt) : "r" (x & -x));
   return 32 - cnt;
 }
+weak_alias (__ffs, ffs)
diff --git a/sysdeps/rs6000/ffs.c b/sysdeps/rs6000/ffs.c
index f078c91e98..2cf2302605 100644
--- a/sysdeps/rs6000/ffs.c
+++ b/sysdeps/rs6000/ffs.c
@@ -26,7 +26,7 @@
 #ifdef	__GNUC__
 
 int
-ffs (x)
+__ffs (x)
      int x;
 {
   int cnt;
@@ -34,6 +34,7 @@ ffs (x)
   asm ("cntlz %0,%1" : "=r" (cnt) : "r" (x & -x));
   return 32 - cnt;
 }
+weak_alias (__ffs, ffs)
 
 #else
 #include <sysdeps/generic/ffs.c>
diff --git a/sysdeps/unix/sysv/linux/i386/chown.c b/sysdeps/unix/sysv/linux/i386/chown.c
new file mode 100644
index 0000000000..e985ce0dae
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/i386/chown.c
@@ -0,0 +1,95 @@
+/* Copyright (C) 1998 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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <errno.h>
+#include <unistd.h>
+#include <sys/syscall.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 __syscall_chown (const char *__file,
+			    uid_t __owner, gid_t __group);
+#ifdef __NR_lchown
+/* running under Linux 2.0 or < 2.1.8x */
+static int __libc_old_chown;
+
+
+int
+__real_chown (const char *file, uid_t owner, gid_t group)
+{
+  int result;
+
+  if (!__libc_old_chown)
+    {
+      int saved_errno = errno;
+      result = __syscall_chown (file, owner, group);
+
+      if (result >= 0 || errno != ENOSYS)
+	return result;
+
+      __set_errno (saved_errno);
+      __libc_old_chown = 1;
+    }
+
+  return __lchown (file, owner, group);
+}
+#endif
+
+
+#if !defined __NR_lchown || \
+    (defined HAVE_ELF && defined PIC && defined DO_VERSIONING)
+/* compiling under older kernels or for compatibiity */
+int
+__chown_is_lchown (const char *file, uid_t owner, gid_t group)
+{
+  return __lchown (file, owner, group);
+}
+#endif
+
+#if defined HAVE_ELF && defined PIC && defined DO_VERSIONING
+strong_alias (__chown_is_lchown, _chown_is_lchown)
+symbol_version (__chown_is_lchown, __chown, GLIBC_2.0);
+symbol_version (_chown_is_lchown, chown, GLIBC_2.0);
+
+# ifdef __NR_lchown
+strong_alias (__real_chown, _real_chown)
+default_symbol_version (__real_chown, __chown, GLIBC_2.1);
+default_symbol_version (_real_chown, chown, GLIBC_2.1);
+# else
+strong_alias (__chown_is_lchown, __chown_is_lchown21)
+strong_alias (__chown_is_lchown, _chown_is_lchown21)
+default_symbol_version (__chown_is_lchown21, __chown, GLIBC_2.1);
+default_symbol_version (_chown_is_lchown21, chown, GLIBC_2.1);
+# endif
+#else
+# ifdef __NR_lchown
+strong_alias (__real_chown, __chown)
+weak_alias (__real_chown, chown)
+# else
+strong_alias (__chown_is_lchown, __chown)
+weak_alias (__chown_is_lchown, chown)
+# endif
+#endif
diff --git a/sysdeps/unix/sysv/linux/i386/syscalls.list b/sysdeps/unix/sysv/linux/i386/syscalls.list
index 392a257194..a66ccc0a12 100644
--- a/sysdeps/unix/sysv/linux/i386/syscalls.list
+++ b/sysdeps/unix/sysv/linux/i386/syscalls.list
@@ -1,5 +1,6 @@
 # File name	Caller	Syscall name	# args	Strong name	Weak names
 
+s_chown		chown	chown		3	__syscall_chown
 s_getgroups	getgroups getgroups	2	__syscall_getgroups
 s_llseek	llseek	_llseek		5	__sys_llseek
 s_setgroups	setgroups setgroups	2	__syscall_setgroups
diff --git a/sysdeps/unix/sysv/linux/syscalls.list b/sysdeps/unix/sysv/linux/syscalls.list
index d0ab7d2170..f55c3f6fff 100644
--- a/sysdeps/unix/sysv/linux/syscalls.list
+++ b/sysdeps/unix/sysv/linux/syscalls.list
@@ -40,7 +40,6 @@ rt_sigprocmask	-	rt_sigprocmask	4	__syscall_rt_sigprocmask
 rt_sigqueueinfo	-	rt_sigqueueinfo	3	__syscall_rt_sigqueueinfo
 rt_sigsuspend	-	rt_sigsuspend	2	__syscall_rt_sigsuspend
 rt_sigtimedwait	-	rt_sigtimedwait	4	__syscall_rt_sigtimedwait
-s_chown		chown	chown		3	__syscall_chown
 s_getdents	EXTRA	getdents	3	__getdents
 s_getpriority	getpriority getpriority	2	__syscall_getpriority
 s_getresgid	getresgid getresgid	3	__syscall_getresgid
diff --git a/sysdeps/vax/ffs.s b/sysdeps/vax/ffs.s
index 49faffb060..9f7ebc95fe 100644
--- a/sysdeps/vax/ffs.s
+++ b/sysdeps/vax/ffs.s
@@ -39,10 +39,11 @@
 
 #include "DEFS.h"
 
-ENTRY(ffs, 0)
+ENTRY(__ffs, 0)
 	ffs	$0,$32,4(ap),r0
 	bneq	1f
 	mnegl	$1,r0
 1:
 	incl	r0
 	ret
+weak_alias (__ffs, ffs)