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authorUlrich Drepper <drepper@redhat.com>1998-08-24 16:46:16 +0000
committerUlrich Drepper <drepper@redhat.com>1998-08-24 16:46:16 +0000
commited1ac6a2d6c744bdbd4751efc86326ceafeac26c (patch)
tree5ca6ee6384dfd1a25493058d4debe985b101a3b0 /sysdeps/unix/sysv/linux/powerpc/chown.c
parentc2228a513135bb229cd9c9984e38e52143d5f6dd (diff)
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Update.
1998-08-24 16:34  Ulrich Drepper  <drepper@cygnus.com>

	* debug/catchsegv.sh: Handle text preceding backtrace better.
	* sysdeps/generic/segfault.c: Allow register dump.  Allow handler
	to be installed for other signals than SIGSEGV.
	* sysdeps/generic/register-dump.h: New file.
	* sysdeps/i386/register-dump.h: New file.
	* sysdeps/powerpc/register-dump.h: New file.

	* sysdeps/unix/sysv/linux/i386/profil-counter.h: Use macros from
	sigcontextinfo.h.
	* sysdeps/unix/sysv/linux/powerpc/profil-counter.h: Use i386 version.

1998-08-24  Geoff Keating  <geoffk@ozemail.com.au>

	* sysdeps/unix/sysv/linux/powerpc/sigcontextinfo.h: New file.

1998-08-09  Geoff Keating  <geoffk@ozemail.com.au>

	* sysdeps/unix/sysv/linux/powerpc/chown.c: New file.
	* sysdeps/unix/sysv/linux/powerpc/lchown.S: New file.
	* sysdeps/unix/sysv/linux/powerpc/syscalls.list: Add chown, remove
	getresuid, getresgid.

1998-08-16  Geoff Keating  <geoffk@ozemail.com.au>

	* sysdeps/unix/sysv/linux/powerpc/clone.S: Fix bugs.  Set up stack
	pointer in userland.

1998-08-21  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/unix/sysv/linux/sys/mount.h (MNT_FORCE): Define as enum
	and fix value.

1998-08-22  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* elf/ldd.bash.in: Add missing quotes around $file.  Make loop
	over arguments Bourne shell compatible.  Don't exit unsuccessfully
	if nonelf returns successfully.  Avoid duplicating most of the
	script.
	* sysdeps/unix/sysv/linux/ldd-rewrite.sed: Add missing quotes
	around $file.

1998-08-24 10:37  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* libio/Versions (_IO_do_write, _IO_file_attach,
	_IO_file_close_it, _IO_file_finish, _IO_file_fopen,
	_IO_file_init, _IO_file_overflow, _IO_file_seekoff,
	_IO_file_setbuf, _IO_file_sync, _IO_file_underflow,
	_IO_file_write, _IO_file_xsputn): Added to GLIBC_2.1.

	* libio/fileops.c (_IO_do_write, _IO_file_attach,
	_IO_file_close_it, _IO_file_finish, _IO_file_fopen,
	_IO_file_init, _IO_file_overflow, _IO_file_seekoff,
	_IO_file_setbuf, _IO_file_sync, _IO_file_underflow,
	_IO_file_write, _IO_file_xsputn): Change the prefix to
	"_IO_new_". Added to GLIBC_2.1.

	* libio/libioP.h (_IO_do_write, _IO_file_attach,
	_IO_file_close_it, _IO_file_finish, _IO_file_fopen,
	_IO_file_init, _IO_file_overflow, _IO_file_seekoff,
	_IO_file_setbuf, _IO_file_sync, _IO_file_underflow,
	_IO_file_write, _IO_file_xsputn): Add prototypes for the prefix
	"_IO_new_".

	* libio/oldfileops.c (_IO_do_write, _IO_file_attach,
	_IO_file_close_it, _IO_file_finish, _IO_file_fopen,
	_IO_file_init, _IO_file_overflow, _IO_file_seekoff,
	_IO_file_setbuf, _IO_file_sync, _IO_file_underflow,
	_IO_file_write, _IO_file_xsputn): Added to GLIBC_2.0.

	* csu/initfini.c: Return to .text before __gmon_start__.
	* elf/elf.h (EM_FAKE_ALPHA): Rename from EM_OLD_ALPHA.
	(STO_MIPS_*): Rename from STO_*.
	(STB_MIPS_SPLIT_COMMON): Rename from STB_SPLIT_COMMON.
	(STO_ALPHA_NOPV, STO_ALPHA_STD_GPLOAD): New.
	* math/atest-exp.c (mpn_bitsize): Fix bit location calculation.
	(main): e3s is negative on zero.
	* math/atest-exp2.c: Likewise.
1998-08-23  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* Makerules (install): Add comment about absolute paths.
Diffstat (limited to 'sysdeps/unix/sysv/linux/powerpc/chown.c')
-rw-r--r--sysdeps/unix/sysv/linux/powerpc/chown.c131
1 files changed, 131 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/powerpc/chown.c b/sysdeps/unix/sysv/linux/powerpc/chown.c
new file mode 100644
index 0000000000..5f6c3d29ce
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/chown.c
@@ -0,0 +1,131 @@
+/* chown() compatibility.
+   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 <string.h>
+#include <unistd.h>
+#include <limits.h>
+#include <sys/syscall.h>
+#include <stdlib.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.
+  This file emulates chown() under the old kernels.
+*/
+
+extern int __syscall_chown (const char *__file,
+			    uid_t __owner, gid_t __group);
+
+int
+__chown (const char *file, uid_t owner, gid_t group)
+{
+   int err;
+   int old_errno;
+   char link[PATH_MAX+2];
+   char path[2*PATH_MAX+4];
+   int loopct;
+   int filelen;
+   static int libc_old_chown = 0 /* -1=old linux, 1=new linux, 0=unknown */;
+   
+   if (libc_old_chown == 1)
+     return __syscall_chown (file, owner, group);
+
+   old_errno = errno;
+
+#ifdef __NR_lchown
+   if (libc_old_chown == 0)
+     {
+       err = __syscall_chown (file, owner, group);
+       if (err != -1 || errno != ENOSYS)
+	 {
+	   libc_old_chown = 1;
+	   return err;
+	 }
+       libc_old_chown = -1;
+     }
+#endif
+   
+   err = __readlink (file, link, PATH_MAX+1);
+   if (err == -1)
+     {
+       errno = old_errno;
+       return __lchown(file, owner, group);
+     }
+
+   filelen = strlen (file) + 1;
+   if (filelen > sizeof(path))
+     {
+       errno = ENAMETOOLONG;
+       return -1;
+     }
+   memcpy (path, file, filelen);
+
+   /* 'The system has an arbitrary limit...'  In practise, we'll hit
+      ENAMETOOLONG before this, usually.  */
+   for (loopct = 0; loopct < 128; loopct++)
+   {
+     int linklen;
+     
+     if (err >= PATH_MAX+1)
+       {
+	 errno = ENAMETOOLONG;
+	 return -1;
+       }
+
+      link[err] = 0;  /* Null-terminate string, just-in-case.  */
+
+      linklen = strlen (link) + 1;
+      
+      if (link[0] == '/')
+	memcpy (path, link, linklen);
+      else
+	{
+	  filelen = strlen (path);
+	  
+	  while (filelen > 1 && path[filelen-1] == '/')
+	    filelen--;
+	  while (filelen > 0 && path[filelen-1] != '/')
+	    filelen--;
+	  if (filelen + linklen > sizeof(path))
+	    {
+	      errno = ENAMETOOLONG;
+	      return -1;
+	    }
+	  memcpy (path+filelen, link, linklen);
+	}
+
+      err = __readlink(path, link, PATH_MAX+1);
+      
+      if (err == -1)
+      {  
+	errno = old_errno;
+	return __lchown(path, owner, group);
+      }
+   }
+   errno = ELOOP;
+   return -1;
+}
+
+#if defined PIC && defined DO_VERSIONING
+default_symbol_version (__chown, chown, GLIBC_2.1);
+#else
+weak_alias (__chown, chown)
+#endif