Update.

2004-11-12  Ulrich Drepper  <drepper@redhat.com>

	* sysdeps/unix/sysv/linux/libc_fatal.c: Add new function __libc_message
	which performs the printing and simple format string handling.  The
	string is written to tty, stderr, syslog in this order, stopping after
	the first successful output.
	(__libc_fatal): Call __libc_message.
	* include/stdio.h: Declare __libc_message.
	* malloc/malloc.c (malloc_printerr): Use __libc_message.
	* debug/chk_fail.c: Also print message with __libc_message.
	* debug/test-strcpy_chk.c: Ensure that debug messages are not printed
	to the terminal or stderr.
	* debug/tst-chk1.c: Likewise.

	* posix/Makefile: Remove gpl2lgpl variable.

6 files changed, 78 insertions, 64 deletions

diff --git a/ChangeLog b/ChangeLog
index b62c2e1..1888ce0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,19 @@
+2004-11-12  Ulrich Drepper  <drepper@redhat.com>
+
+	* sysdeps/unix/sysv/linux/libc_fatal.c: Add new function __libc_message
+	which performs the printing and simple format string handling.  The
+	string is written to tty, stderr, syslog in this order, stopping after
+	the first successful output.
+	(__libc_fatal): Call __libc_message.
+	* include/stdio.h: Declare __libc_message.
+	* malloc/malloc.c (malloc_printerr): Use __libc_message.
+	* debug/chk_fail.c: Also print message with __libc_message.
+	* debug/test-strcpy_chk.c: Ensure that debug messages are not printed
+	to the terminal or stderr.
+	* debug/tst-chk1.c: Likewise.
+
+	* posix/Makefile: Remove gpl2lgpl variable.
+
 2004-11-12  Martin Schwidefsky  <schwidefsky@de.ibm.com>
 
 	* elf/elf.h: Add 20 bit relocations R_390_*20.
diff --git a/debug/chk_fail.c b/debug/chk_fail.c
index 48848fb..dc1c3d7 100644
--- a/debug/chk_fail.c
+++ b/debug/chk_fail.c
@@ -1,3 +1,4 @@
+
 /* Copyright (C) 2004 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
@@ -16,23 +17,14 @@
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */
 
+#include <stdio.h>
 #include <stdlib.h>
-#include <unistd.h>
-#include <abort-instr.h>
 
 
 void
 __attribute__ ((noreturn))
 __chk_fail (void)
 {
-  while (1)
-    {
-      /* This will leave a nice backtrace.  */
-      abort ();
-#ifdef ABORT_INSTRUCTION
-      ABORT_INSTRUCTION;
-#endif
-      _exit (127);
-    }
+  __libc_fatal ("*** buffer overflow detected ***\n");
 }
 libc_hidden_def (__chk_fail)
diff --git a/debug/test-strcpy_chk.c b/debug/test-strcpy_chk.c
index 4c61f4f..ac9f944 100644
--- a/debug/test-strcpy_chk.c
+++ b/debug/test-strcpy_chk.c
@@ -46,6 +46,8 @@ simple_strcpy_chk (char *dst, const char *src, size_t len)
 }
 #endif
 
+#include <fcntl.h>
+#include <paths.h>
 #include <setjmp.h>
 #include <signal.h>
 
@@ -80,8 +82,8 @@ do_one_test (impl_t *impl, char *dst, const char *src,
       if (setjmp (chk_fail_buf) == 0)
 	{
 	  res = CALL (impl, dst, src, dlen);
-	  error (0, 0, "Function %s (%zd; %zd) did not __chk_fail",
-	  	 impl->name, len, dlen);
+	  printf ("*** Function %s (%zd; %zd) did not __chk_fail\n",
+		  impl->name, len, dlen);
 	  chk_fail_ok = 0;
 	  ret = 1;
 	}
@@ -92,16 +94,16 @@ do_one_test (impl_t *impl, char *dst, const char *src,
 
   if (res != STRCPY_RESULT (dst, len))
     {
-      error (0, 0, "Wrong result in function %s %p %p", impl->name,
-	     res, STRCPY_RESULT (dst, len));
+      printf ("Wrong result in function %s %p %p\n", impl->name,
+	      res, STRCPY_RESULT (dst, len));
       ret = 1;
       return;
     }
 
   if (strcmp (dst, src) != 0)
     {
-      error (0, 0, "Wrong result in function %s dst \"%s\" src \"%s\"",
-	     impl->name, dst, src);
+      printf ("Wrong result in function %s dst \"%s\" src \"%s\"\n",
+	      impl->name, dst, src);
       ret = 1;
       return;
     }
@@ -232,7 +234,7 @@ do_random_tests (void)
 		  if (setjmp (chk_fail_buf) == 0)
 		    {
 		      res = CALL (impl, p2 + align2, p1 + align1, dlen);
-		      error (0, 0, "Iteration %zd - did not __chk_fail", n);
+		      printf ("Iteration %zd - did not __chk_fail\n", n);
 		      chk_fail_ok = 0;
 		      ret = 1;
 		    }
@@ -243,17 +245,19 @@ do_random_tests (void)
 	  res = CALL (impl, p2 + align2, p1 + align1, dlen);
 	  if (res != STRCPY_RESULT (p2 + align2, len))
 	    {
-	      error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %zd, %zd) %p != %p",
-		     n, impl->name, align1, align2, len, res,
-		     STRCPY_RESULT (p2 + align2, len));
+	      printf ("\
+Iteration %zd - wrong result in function %s (%zd, %zd, %zd) %p != %p\n",
+		      n, impl->name, align1, align2, len, res,
+		      STRCPY_RESULT (p2 + align2, len));
 	      ret = 1;
 	    }
 	  for (j = 0; j < align2 + 64; ++j)
 	    {
 	      if (p2[j - 64] != '\1')
 		{
-		  error (0, 0, "Iteration %zd - garbage before, %s (%zd, %zd, %zd)",
-			 n, impl->name, align1, align2, len);
+		  printf ("\
+Iteration %zd - garbage before, %s (%zd, %zd, %zd)\n",
+			  n, impl->name, align1, align2, len);
 		  ret = 1;
 		  break;
 		}
@@ -262,16 +266,18 @@ do_random_tests (void)
 	    {
 	      if (p2[j] != '\1')
 		{
-		  error (0, 0, "Iteration %zd - garbage after, %s (%zd, %zd, %zd)",
-			 n, impl->name, align1, align2, len);
+		  printf ("\
+Iteration %zd - garbage after, %s (%zd, %zd, %zd)\n",
+			  n, impl->name, align1, align2, len);
 		  ret = 1;
 		  break;
 		}
 	    }
 	  if (memcmp (p1 + align1, p2 + align2, len + 1))
 	    {
-	      error (0, 0, "Iteration %zd - different strings, %s (%zd, %zd, %zd)",
-		     n, impl->name, align1, align2, len);
+	      printf ("\
+Iteration %zd - different strings, %s (%zd, %zd, %zd)\n",
+		      n, impl->name, align1, align2, len);
 	      ret = 1;
 	    }
 	}
@@ -290,6 +296,17 @@ test_main (void)
 
   sigaction (SIGABRT, &sa, NULL);
 
+  /* Avoid all the buffer overflow messages on stderr.  */
+  int fd = open (_PATH_DEVNULL, O_WRONLY);
+  if (fd == -1)
+    close (STDERR_FILENO);
+  else
+    {
+      dup2 (fd, STDERR_FILENO);
+      close (fd);
+    }
+  setenv ("LIBC_FATAL_STDERR_", "1", 1);
+
   test_init ();
 
   printf ("%23s", "");
diff --git a/debug/tst-chk1.c b/debug/tst-chk1.c
index fb2074d..37320c3 100644
--- a/debug/tst-chk1.c
+++ b/debug/tst-chk1.c
@@ -17,6 +17,8 @@
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */
 
+#include <fcntl.h>
+#include <paths.h>
 #include <setjmp.h>
 #include <signal.h>
 #include <stdio.h>
@@ -106,6 +108,17 @@ do_test (void)
 
   sigaction (SIGABRT, &sa, NULL);
 
+  /* Avoid all the buffer overflow messages on stderr.  */
+  int fd = open (_PATH_DEVNULL, O_WRONLY);
+  if (fd == -1)
+    close (STDERR_FILENO);
+  else
+    {
+      dup2 (fd, STDERR_FILENO);
+      close (fd);
+    }
+  setenv ("LIBC_FATAL_STDERR_", "1", 1);
+
   struct A { char buf1[9]; char buf2[1]; } a;
 
   printf ("Test checking routines at fortify level %d\n",
diff --git a/include/stdio.h b/include/stdio.h
index 05a91b4..ad8f157 100644
--- a/include/stdio.h
+++ b/include/stdio.h
@@ -62,6 +62,8 @@ extern int __gen_tempname (char *__tmpl, int __kind);
 /* Print out MESSAGE on the error output and abort.  */
 extern void __libc_fatal (__const char *__message)
      __attribute__ ((__noreturn__));
+extern void __libc_message (int do_abort, __const char *__fnt, ...)
+     __attribute__ ((__noreturn__));
 
 /* Acquire ownership of STREAM.  */
 extern void __flockfile (FILE *__stream);
diff --git a/malloc/malloc.c b/malloc/malloc.c
index 6d6294c..3f4fd77 100644
--- a/malloc/malloc.c
+++ b/malloc/malloc.c
@@ -5474,45 +5474,19 @@ malloc_printerr(int action, const char *str, void *ptr)
 {
   if (action & 1)
     {
-      /* output string will be ": ADDR ***\n"  */
-      static const char suffix[] = " ***\n";
-      static const char prefix[] = ": 0x";
-      char buf[sizeof (prefix) - 1 + sizeof (void *) * 2 + sizeof (suffix)];
-      char *cp;
-      if (action & 4)
-	cp = memcpy (&buf[sizeof (buf) - 2], "\n", 2);
-      else
-	{
-	  cp = memcpy (&buf[sizeof (buf) - sizeof (suffix)], suffix,
-		       sizeof (suffix));
-	  cp = _itoa_word ((unsigned long int) ptr, cp, 16, 0);
-	  while (cp > &buf[sizeof (prefix) - 1])
-	    *--cp = '0';
-	  cp = memcpy (buf, prefix, sizeof (prefix) - 1);
-	}
+      char buf[2 * sizeof (uintptr_t) + 1];
 
-      struct iovec iov[3];
-      int n = 0;
-      if ((action & 4) == 0)
-	{
-	  iov[0].iov_base = (char *) "*** glibc detected *** ";
-	  iov[0].iov_len = strlen (iov[0].iov_base);
-	  ++n;
-	}
-      iov[n].iov_base = (char *) str;
-      iov[n].iov_len = strlen (str);
-      ++n;
-      iov[n].iov_base = cp;
-      iov[n].iov_len = &buf[sizeof (buf) - 1] - cp;
-      ++n;
-      if (TEMP_FAILURE_RETRY (__writev (STDERR_FILENO, iov, n)) == -1
-	  && errno == EBADF)
-	/* Standard error is not opened.  Try using syslog.  */
-	syslog (LOG_ERR, "%s%s%s", (char *) iov[0].iov_base,
-		(char *) iov[1].iov_base,
-		n == 3 ? (const char *) iov[2].iov_base : "");
+      buf[sizeof (buf) - 1] = '\0';
+      char *cp = _itoa_word ((uintptr_t) ptr, &buf[sizeof (buf) - 1], 16, 0);
+      while (cp > buf)
+	*--cp = '0';
+
+      __libc_message (action & 2,
+		      action & 4
+		      ? "%s\n" : "*** glibc detected *** %s: 0x%s ***\n",
+		      str, cp);
     }
-  if (action & 2)
+  else if (action & 2)
     abort ();
 }