Prepare for radical source tree reorganization.zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 0 insertions, 102 deletions

diff --git a/sysdeps/unix/sysv/linux/readonly-area.c b/sysdeps/unix/sysv/linux/readonly-area.c
deleted file mode 100644
index e2288e98d6..0000000000
--- a/sysdeps/unix/sysv/linux/readonly-area.c
+++ /dev/null
@@ -1,102 +0,0 @@
-/* Copyright (C) 2004-2017 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 <stdint.h>
-#include <stdio.h>
-#include <stdio_ext.h>
-#include <stdlib.h>
-#include <string.h>
-#include "libio/libioP.h"
-
-/* Return 1 if the whole area PTR .. PTR+SIZE is not writable.
-   Return -1 if it is writable.  */
-
-int
-__readonly_area (const char *ptr, size_t size)
-{
-  const void *ptr_end = ptr + size;
-
-  FILE *fp = fopen ("/proc/self/maps", "rce");
-  if (fp == NULL)
-    {
-      /* It is the system administrator's choice to not have /proc
-	 available to this process (e.g., because it runs in a chroot
-	 environment.  Don't fail in this case.  */
-      if (errno == ENOENT
-	  /* The kernel has a bug in that a process is denied access
-	     to the /proc filesystem if it is set[ug]id.  There has
-	     been no willingness to change this in the kernel so
-	     far.  */
-	  || errno == EACCES)
-	return 1;
-      return -1;
-    }
-
-  /* We need no locking.  */
-  __fsetlocking (fp, FSETLOCKING_BYCALLER);
-
-  char *line = NULL;
-  size_t linelen = 0;
-
-  while (! feof_unlocked (fp))
-    {
-      if (_IO_getdelim (&line, &linelen, '\n', fp) <= 0)
-	break;
-
-      char *p;
-      uintptr_t from = strtoul (line, &p, 16);
-
-      if (p == line || *p++ != '-')
-	break;
-
-      char *q;
-      uintptr_t to = strtoul (p, &q, 16);
-
-      if (q == p || *q++ != ' ')
-	break;
-
-      if (from < (uintptr_t) ptr_end && to > (uintptr_t) ptr)
-	{
-	  /* Found an entry that at least partially covers the area.  */
-	  if (*q++ != 'r' || *q++ != '-')
-	    break;
-
-	  if (from <= (uintptr_t) ptr && to >= (uintptr_t) ptr_end)
-	    {
-	      size = 0;
-	      break;
-	    }
-	  else if (from <= (uintptr_t) ptr)
-	    size -= to - (uintptr_t) ptr;
-	  else if (to >= (uintptr_t) ptr_end)
-	    size -= (uintptr_t) ptr_end - from;
-	  else
-	    size -= to - from;
-
-	  if (!size)
-	    break;
-	}
-    }
-
-  fclose (fp);
-  free (line);
-
-  /* If the whole area between ptr and ptr_end is covered by read-only
-     VMAs, return 1.  Otherwise return -1.  */
-  return size == 0 ? 1 : -1;
-}