* stdlib/bits/stdlib.h: New file.

	* stdlib/stdlib.h: Include <bits/stdlib.h> if fortification is
	requested.
	* Makefile (headers): Add bits/stdlib.h.
	* include/bits/stdlib.h: New file.
	* debug/Depend: New file.
	* debug/ptsname_r_chk.c: New file.
	* debug/realpath_chk.c: New file.
	* debug/wctomb_chk.c: New file.
	* debug/Makefile (routines): Add ptsname_r_chk, realpath_chk, and
	wctomb_chk.
	* debug/Versions: Export __ptsname_r_chk, __realpath_chk, and
	__wctomb_chk.
	* debug/tst-chk1.c: Add tests for __ptsname_r_chk, __realpath_chk, and
	__wctomb_chk.

7 files changed, 194 insertions, 1 deletions

diff --git a/debug/Depend b/debug/Depend
new file mode 100644
index 0000000000..f3e1156a4e
--- /dev/null
+++ b/debug/Depend
@@ -0,0 +1 @@
+localedata
diff --git a/debug/Makefile b/debug/Makefile
index 6ec08dc94a..51a9c9d42a 100644
--- a/debug/Makefile
+++ b/debug/Makefile
@@ -31,7 +31,8 @@ routines  = backtrace backtracesyms backtracesymsfd noophooks \
 	    printf_chk fprintf_chk vprintf_chk vfprintf_chk \
 	    gets_chk chk_fail readonly-area fgets_chk fgets_u_chk \
 	    read_chk pread_chk pread64_chk recv_chk recvfrom_chk \
-	    readlink_chk getwd_chk getcwd_chk stack_chk_fail \
+	    readlink_chk getwd_chk getcwd_chk realpath_chk ptsname_r_chk \
+	    wctomb_chk stack_chk_fail \
 	    $(static-only-routines)
 static-only-routines := warning-nop stack_chk_fail_local
 
diff --git a/debug/Versions b/debug/Versions
index 051f4df000..53fe6c02b0 100644
--- a/debug/Versions
+++ b/debug/Versions
@@ -23,6 +23,7 @@ libc {
     __read_chk; __pread_chk; __pread64_chk;
     __readlink_chk; __getcwd_chk; __getwd_chk;
     __recv_chk; __recvfrom_chk;
+    __realpath_chk; __ptsname_r_chk; __wctomb_chk;
 
     __stack_chk_fail;
   }
diff --git a/debug/ptsname_r_chk.c b/debug/ptsname_r_chk.c
new file mode 100644
index 0000000000..5f03592bd1
--- /dev/null
+++ b/debug/ptsname_r_chk.c
@@ -0,0 +1,29 @@
+/* Copyright (C) 2005 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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <stdlib.h>
+
+
+int
+__ptsname_r_chk (int fd, char *buf, size_t buflen, size_t nreal)
+{
+  if (buflen > nreal)
+    __chk_fail ();
+
+  return __ptsname_r (fd, buf, buflen);
+}
diff --git a/debug/realpath_chk.c b/debug/realpath_chk.c
new file mode 100644
index 0000000000..961aea0b85
--- /dev/null
+++ b/debug/realpath_chk.c
@@ -0,0 +1,60 @@
+/* Copyright (C) 2005 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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <limits.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+
+char *
+__realpath_chk (const char *buf, char *resolved, size_t resolvedlen)
+{
+#ifdef PATH_MAX
+  if (resolvedlen < PATH_MAX)
+    __chk_fail ();
+
+  return __realpath (buf, resolved);
+#else
+  long int pathmax =__pathconf (buf, _PC_PATH_MAX);
+  if (pathmax != -1)
+    {
+      /* We do have a fixed limit.  */
+      if (resolvedlen < pathmax)
+	__chk_fail ();
+
+      return __realpath (buf, resolved);
+    }
+
+  /* Since there is no fixed limit we check whether the size is large
+     enough.  */
+  char *res = __realpath (buf, NULL);
+  if (res != NULL)
+    {
+      size_t actlen = strlen (res) + 1;
+      if (actlen > resolvedlen)
+	__chk_fail ();
+
+      memcpy (resolved, res, actlen);
+      free (res);
+      res = resolved;
+    }
+
+  return res;
+#endif
+}
diff --git a/debug/tst-chk1.c b/debug/tst-chk1.c
index 6389d1150e..ba50973868 100644
--- a/debug/tst-chk1.c
+++ b/debug/tst-chk1.c
@@ -18,6 +18,7 @@
    02111-1307 USA.  */
 
 #include <fcntl.h>
+#include <locale.h>
 #include <paths.h>
 #include <setjmp.h>
 #include <signal.h>
@@ -791,5 +792,69 @@ do_test (void)
   if (rmdir (fname) != 0)
     FAIL ();
 
+
+#if PATH_MAX > 0
+  char largebuf[PATH_MAX];
+  char *realres = realpath (".", largebuf);
+#endif
+#if __USE_FORTIFY_LEVEL >= 1
+  CHK_FAIL_START
+  char realbuf[1];
+  realres = realpath (".", realbuf);
+  CHK_FAIL_END
+#endif
+
+  if (setlocale (LC_ALL, "de_DE.UTF-8") != NULL)
+    {
+      /* First a simple test.  */
+      char enough[MB_CUR_MAX];
+      if (wctomb (enough, L'A') != 1)
+	{
+	  puts ("first wctomb test failed");
+	  ret = 1;
+	}
+
+#if __USE_FORTIFY_LEVEL >= 1
+      /* We know the wchar_t encoding is ISO 10646.  So pick a
+	 character which has a multibyte representation which does not
+	 fit.  */
+      CHK_FAIL_START
+      char smallbuf[2];
+      if (wctomb (smallbuf, L'\x100') != 2)
+	{
+	  puts ("second wctomb test failed");
+	  ret = 1;
+	}
+      CHK_FAIL_END
+#endif
+    }
+  else
+    {
+      puts ("cannot set locale");
+      ret = 1;
+    }
+
+  fd = posix_openpt (O_RDWR);
+  if (fd != -1)
+    {
+      char enough[1000];
+      if (ptsname_r (fd, enough, sizeof (enough)) != 0)
+	{
+	  puts ("first ptsname_r failed");
+	  ret = 1;
+	}
+
+#if __USE_FORTIFY_LEVEL >= 1
+      CHK_FAIL_START
+      char smallbuf[2];
+      if (ptsname_r (fd, smallbuf, sizeof (smallbuf) + 1) == 0)
+	{
+	  puts ("second ptsname_r somehow suceeded");
+	  ret = 1;
+	}
+      CHK_FAIL_END
+#endif
+    }
+
   return ret;
 }
diff --git a/debug/wctomb_chk.c b/debug/wctomb_chk.c
new file mode 100644
index 0000000000..d0366346b8
--- /dev/null
+++ b/debug/wctomb_chk.c
@@ -0,0 +1,36 @@
+/* Copyright (C) 2005 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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <locale.h>
+#include <stdlib.h>
+#include <wcsmbs/wcsmbsload.h>
+
+
+extern mbstate_t __no_r_state attribute_hidden;	/* Defined in mbtowc.c.  */
+
+
+int
+__wctomb_chk (char *s, wchar_t wchar, size_t buflen)
+{
+  /* We do not have to implement the full wctomb semantics since we
+     know that S cannot be NULL when we come here.  */
+  if (buflen < MB_CUR_MAX)
+    __chk_fail ();
+
+  return __wcrtomb (s, wchar, &__no_r_state);
+}