* sysdeps/unix/sysv/linux/libc_fatal.c: Print backtrace and memory

	map if requested.
	* debug/chk_fail.c: Request backtrace and memory map dump.

	* Versions.def: Add GLIBC_2.4 for libc.
	* debug/fgets_chk.c: New file.
	* debug/fgets_u_chk.c: New file.
	* debug/getcwd_chk.c: New file.
	* debug/getwd_chk.c: New file.
	* debug/readlink_chk.c: New file.
	* debug/read_chk.c: New file.
	* debug/pread_chk.c: New file.
	* debug/pread64_chk.c: New file.
	* debug/recv_chk.c: New file.
	* debug/recvfrom_chk.c: New file.
	* debug/Versions: Add all new functions with version GLIBC_2.4.
	* debug/Makefile (routines): Add fgets_chk, fgets_u_chk, read_chk,
	pread_chk, pread64_chk, recv_chk, recvfrom_chk, readlink_chk,
	getwd_chk, and getcwd_chk.  Plus appropriate CFLAGS definitions.
	* debug/tst-chk1.c: Add more tests.
	* libio/bits/stdio2.h: Add macros for fgets and fgets_unlocked.
	* include/stdio.h: Declare __fgets_chk and __fgets_unlocked_chk.
	* posix/unistd.h: Include <bits/unistd.h> for fortification.
	* posix/bits/unistd.h: New file.
	* posix/Makefile (headers): Add bits/unistd.h.
	* socket/sys/socket.h: Include <bits/socket2.h> for fortification.
	* socket/bits/socket2.h: New file.
	* socket/Makefile (headers): Add bits/socket2.h.

	* string/bits/string3.h: Extend memset macro to check for zero 3rd
	parameter and use __memset_zero_constant_len_parameter in that case.
	* sysdeps/generic/memset_chk.c: Add
	__memset_zero_constant_len_parameter alias and linker warning.
	* debug/Versions: Add __memset_zero_constant_len_parameter to libc
	with version GLIBC_2.4.

	* sysdeps/generic/bits/types.h: Don't unnecessarily use __extension__
	in __STD_TYPE definition.

2005-02-21  Jakub Jelinek  <jakub@redhat.com>

	* malloc/malloc.c (malloc_printerr): If MALLOC_CHECK_={5,7}, print
	the error message rather than program name.

2005-02-21  Ulrich Drepper  <drepper@redhat.com>

34 files changed, 789 insertions, 38 deletions

diff --git a/ChangeLog b/ChangeLog
index 587fa4995d..c828841de5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,51 @@
 2005-02-21  Ulrich Drepper  <drepper@redhat.com>
 
+	* sysdeps/unix/sysv/linux/libc_fatal.c: Print backtrace and memory
+	map if requested.
+	* debug/chk_fail.c: Request backtrace and memory map dump.
+
+	* Versions.def: Add GLIBC_2.4 for libc.
+	* debug/fgets_chk.c: New file.
+	* debug/fgets_u_chk.c: New file.
+	* debug/getcwd_chk.c: New file.
+	* debug/getwd_chk.c: New file.
+	* debug/readlink_chk.c: New file.
+	* debug/read_chk.c: New file.
+	* debug/pread_chk.c: New file.
+	* debug/pread64_chk.c: New file.
+	* debug/recv_chk.c: New file.
+	* debug/recvfrom_chk.c: New file.
+	* debug/Versions: Add all new functions with version GLIBC_2.4.
+	* debug/Makefile (routines): Add fgets_chk, fgets_u_chk, read_chk,
+	pread_chk, pread64_chk, recv_chk, recvfrom_chk, readlink_chk,
+	getwd_chk, and getcwd_chk.  Plus appropriate CFLAGS definitions.
+	* debug/tst-chk1.c: Add more tests.
+	* libio/bits/stdio2.h: Add macros for fgets and fgets_unlocked.
+	* include/stdio.h: Declare __fgets_chk and __fgets_unlocked_chk.
+	* posix/unistd.h: Include <bits/unistd.h> for fortification.
+	* posix/bits/unistd.h: New file.
+	* posix/Makefile (headers): Add bits/unistd.h.
+	* socket/sys/socket.h: Include <bits/socket2.h> for fortification.
+	* socket/bits/socket2.h: New file.
+	* socket/Makefile (headers): Add bits/socket2.h.
+
+	* string/bits/string3.h: Extend memset macro to check for zero 3rd
+	parameter and use __memset_zero_constant_len_parameter in that case.
+	* sysdeps/generic/memset_chk.c: Add
+	__memset_zero_constant_len_parameter alias and linker warning.
+	* debug/Versions: Add __memset_zero_constant_len_parameter to libc
+	with version GLIBC_2.4.
+
+	* sysdeps/generic/bits/types.h: Don't unnecessarily use __extension__
+	in __STD_TYPE definition.
+
+2005-02-21  Jakub Jelinek  <jakub@redhat.com>
+
+	* malloc/malloc.c (malloc_printerr): If MALLOC_CHECK_={5,7}, print
+	the error message rather than program name.
+
+2005-02-21  Ulrich Drepper  <drepper@redhat.com>
+
 	* posix/unistd.h: symlink and readlink are unconditionally
 	available in the 2001 spec.
 
diff --git a/Versions.def b/Versions.def
index 33409f1143..45b2127914 100644
--- a/Versions.def
+++ b/Versions.def
@@ -20,6 +20,7 @@ libc {
   GLIBC_2.3.2
   GLIBC_2.3.3
   GLIBC_2.3.4
+  GLIBC_2.4
 %ifdef USE_IN_LIBIO
   HURD_CTHREADS_0.3
 %endif
diff --git a/bits/types.h b/bits/types.h
index ce48964f14..65c8a9fe90 100644
--- a/bits/types.h
+++ b/bits/types.h
@@ -1,5 +1,5 @@
 /* bits/types.h -- definitions of __*_t types underlying *_t types.
-   Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2003, 2004, 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
@@ -114,6 +114,9 @@ typedef struct
 # define __ULONG32_TYPE		unsigned long int
 # define __S64_TYPE		__quad_t
 # define __U64_TYPE		__u_quad_t
+/* We want __extension__ before typedef's that use nonstandard base types
+   such as `long long' in C89 mode.  */
+# define __STD_TYPE		__extension__ typedef
 #elif __WORDSIZE == 64
 # define __SQUAD_TYPE		long int
 # define __UQUAD_TYPE		unsigned long int
@@ -123,15 +126,13 @@ typedef struct
 # define __ULONG32_TYPE		unsigned int
 # define __S64_TYPE		long int
 # define __U64_TYPE		unsigned long int
+/* No need to mark the typedef with __extension__.   */
+# define __STD_TYPE		typedef
 #else
 # error
 #endif
 #include <bits/typesizes.h>	/* Defines __*_T_TYPE macros.  */
 
-/* We want __extension__ before typedef's that use nonstandard base types
-   such as `long long' in C89 mode.  */
-#define __STD_TYPE __extension__ typedef
-
 
 __STD_TYPE __DEV_T_TYPE __dev_t;	/* Type of device numbers.  */
 __STD_TYPE __UID_T_TYPE __uid_t;	/* Type of user identifications.  */
diff --git a/debug/Makefile b/debug/Makefile
index 6df06116b7..a3f20fd9a7 100644
--- a/debug/Makefile
+++ b/debug/Makefile
@@ -1,4 +1,4 @@
-# Copyright (C) 1998, 1999, 2000, 2001, 2004 Free Software Foundation, Inc.
+# Copyright (C) 1998,1999,2000,2001,2004,2005 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
@@ -29,7 +29,9 @@ routines := backtrace backtracesyms backtracesymsfd noophooks \
 	    strcat_chk strcpy_chk strncat_chk strncpy_chk \
 	    sprintf_chk vsprintf_chk snprintf_chk vsnprintf_chk \
 	    printf_chk fprintf_chk vprintf_chk vfprintf_chk \
-	    gets_chk chk_fail readonly-area
+	    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
 
 CFLAGS-backtrace.c = -fno-omit-frame-pointer
 CFLAGS-sprintf_chk.c = -D_IO_MTSAFE_IO
@@ -41,6 +43,13 @@ CFLAGS-fprintf_chk.c = -D_IO_MTSAFE_IO $(exceptions)
 CFLAGS-vprintf_chk.c = -D_IO_MTSAFE_IO $(exceptions)
 CFLAGS-vfprintf_chk.c = -D_IO_MTSAFE_IO $(exceptions)
 CFLAGS-gets_chk.c = -D_IO_MTSAFE_IO $(exceptions)
+CFLAGS-fgets_chk.c = -D_IO_MTSAFE_IO $(exceptions)
+CFLAGS-fgets_u_chk.c = -D_IO_MTSAFE_IO $(exceptions)
+CFLAGS-read_chk.c = -fexceptions -fasynchronous-unwind-tables
+CFLAGS-pread_chk.c = -fexceptions -fasynchronous-unwind-tables
+CFLAGS-pread64_chk.c = -fexceptions -fasynchronous-unwind-tables
+CFLAGS-recv_chk.c = -fexceptions -fasynchronous-unwind-tables
+CFLAGS-recvfrom_chk.c = -fexceptions -fasynchronous-unwind-tables
 
 tests = backtrace-tst tst-chk1 tst-chk2 tst-chk3 \
 	test-strcpy_chk test-stpcpy_chk
diff --git a/debug/Versions b/debug/Versions
index 07d6fbb830..a4229d7852 100644
--- a/debug/Versions
+++ b/debug/Versions
@@ -18,4 +18,11 @@ libc {
     __printf_chk; __fprintf_chk; __vprintf_chk; __vfprintf_chk;
     __gets_chk;
   }
+  GLIBC_2.4 {
+    __fgets_chk; __fgets_unlocked_chk;
+    __read_chk; __pread_chk; __pread64_chk;
+    __readlink_chk; __getcwd_chk; __getwd_chk;
+    __memset_zero_constant_len_parameter;
+    __recv_chk; __recvfrom_chk;
+  }
 }
diff --git a/debug/chk_fail.c b/debug/chk_fail.c
index 6921ca4686..0cfca295a9 100644
--- a/debug/chk_fail.c
+++ b/debug/chk_fail.c
@@ -28,7 +28,7 @@ __chk_fail (void)
 {
   /* The loop is added only to keep gcc happy.  */
   while (1)
-    __libc_message (1, "*** buffer overflow detected ***: %s terminated\n",
+    __libc_message (2, "*** buffer overflow detected ***: %s terminated\n",
 		    __libc_argv[0] ?: "<unknown>");
 }
 libc_hidden_def (__chk_fail)
diff --git a/debug/fgets_chk.c b/debug/fgets_chk.c
new file mode 100644
index 0000000000..27fbede7f0
--- /dev/null
+++ b/debug/fgets_chk.c
@@ -0,0 +1,67 @@
+/* Copyright (C) 1993, 1995, 1996, 1997, 1998, 1999, 2002, 2003, 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.
+
+   As a special exception, if you link the code in this file with
+   files compiled with a GNU compiler to produce an executable,
+   that does not cause the resulting executable to be covered by
+   the GNU Lesser General Public License.  This exception does not
+   however invalidate any other reasons why the executable file
+   might be covered by the GNU Lesser General Public License.
+   This exception applies to code released by its copyright holders
+   in files containing the exception.  */
+
+#include "libioP.h"
+#include <stdio.h>
+#include <sys/param.h>
+
+char *
+__fgets_chk (buf, size, n, fp)
+     char *buf;
+     size_t size;
+     int n;
+     _IO_FILE *fp;
+{
+  _IO_size_t count;
+  char *result;
+  CHECK_FILE (fp, NULL);
+  if (n <= 0)
+    return NULL;
+  _IO_acquire_lock (fp);
+  /* This is very tricky since a file descriptor may be in the
+     non-blocking mode. The error flag doesn't mean much in this
+     case. We return an error only when there is a new error. */
+  int old_error = fp->_IO_file_flags & _IO_ERR_SEEN;
+  fp->_IO_file_flags &= ~_IO_ERR_SEEN;
+  count = INTUSE(_IO_getline) (fp, buf, MIN ((size_t) n - 1, size), '\n', 1);
+  /* If we read in some bytes and errno is EAGAIN, that error will
+     be reported for next read. */
+  if (count == 0 || ((fp->_IO_file_flags & _IO_ERR_SEEN)
+		     && errno != EAGAIN))
+    result = NULL;
+  else if (count >= size)
+    __chk_fail ();
+  else
+    {
+      buf[count] = '\0';
+      result = buf;
+    }
+  fp->_IO_file_flags |= old_error;
+  _IO_release_lock (fp);
+  return result;
+}
diff --git a/debug/fgets_u_chk.c b/debug/fgets_u_chk.c
new file mode 100644
index 0000000000..324d7e371b
--- /dev/null
+++ b/debug/fgets_u_chk.c
@@ -0,0 +1,65 @@
+/* Copyright (C) 1993, 1995, 1996, 1997, 1998, 1999, 2002, 2003, 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.
+
+   As a special exception, if you link the code in this file with
+   files compiled with a GNU compiler to produce an executable,
+   that does not cause the resulting executable to be covered by
+   the GNU Lesser General Public License.  This exception does not
+   however invalidate any other reasons why the executable file
+   might be covered by the GNU Lesser General Public License.
+   This exception applies to code released by its copyright holders
+   in files containing the exception.  */
+
+#include "libioP.h"
+#include <stdio.h>
+#include <sys/param.h>
+
+char *
+__fgets_unlocked_chk (buf, size, n, fp)
+     char *buf;
+     size_t size;
+     int n;
+     _IO_FILE *fp;
+{
+  _IO_size_t count;
+  char *result;
+  CHECK_FILE (fp, NULL);
+  if (n <= 0)
+    return NULL;
+  /* This is very tricky since a file descriptor may be in the
+     non-blocking mode. The error flag doesn't mean much in this
+     case. We return an error only when there is a new error. */
+  int old_error = fp->_IO_file_flags & _IO_ERR_SEEN;
+  fp->_IO_file_flags &= ~_IO_ERR_SEEN;
+  count = INTUSE(_IO_getline) (fp, buf, MIN ((size_t) n - 1, size), '\n', 1);
+  /* If we read in some bytes and errno is EAGAIN, that error will
+     be reported for next read. */
+  if (count == 0 || ((fp->_IO_file_flags & _IO_ERR_SEEN)
+		     && errno != EAGAIN))
+    result = NULL;
+  else if (count >= size)
+    __chk_fail ();
+  else
+    {
+      buf[count] = '\0';
+      result = buf;
+    }
+  fp->_IO_file_flags |= old_error;
+  return result;
+}
diff --git a/debug/getcwd_chk.c b/debug/getcwd_chk.c
new file mode 100644
index 0000000000..9e14a0102e
--- /dev/null
+++ b/debug/getcwd_chk.c
@@ -0,0 +1,31 @@
+/* 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 <errno.h>
+#include <unistd.h>
+#include <sys/param.h>
+
+
+char *
+__getcwd_chk (char *buf, size_t size, size_t buflen)
+{
+  char *res = __getcwd (buf, MIN (size, buflen));
+  if (res == NULL && errno == ERANGE && size > buflen)
+    __chk_fail ();
+  return res;
+}
diff --git a/debug/getwd_chk.c b/debug/getwd_chk.c
new file mode 100644
index 0000000000..898af28d3f
--- /dev/null
+++ b/debug/getwd_chk.c
@@ -0,0 +1,34 @@
+/* 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 <errno.h>
+#include <unistd.h>
+#include <sys/param.h>
+
+
+char *
+__getwd_chk (char *buf, size_t buflen)
+{
+  char *res = __getcwd (buf, buflen);
+  if (res == NULL && errno == ERANGE)
+    __chk_fail ();
+  return res;
+}
+
+link_warning (getwd,
+	      "the `getwd' function is dangerous and should not be used.")
diff --git a/debug/pread64_chk.c b/debug/pread64_chk.c
new file mode 100644
index 0000000000..5402e05b86
--- /dev/null
+++ b/debug/pread64_chk.c
@@ -0,0 +1,33 @@
+/* Copyright (C) 2005 Free Software