1 files changed, 68 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/unix/sysv/linux/libc_fatal.c b/REORG.TODO/sysdeps/unix/sysv/linux/libc_fatal.c
new file mode 100644
index 0000000000..d22bfdcc67
--- /dev/null
+++ b/REORG.TODO/sysdeps/unix/sysv/linux/libc_fatal.c
@@ -0,0 +1,68 @@
+/* Catastrophic failure reports.  Linux version.
+   Copyright (C) 1993-2017 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 <execinfo.h>
+#include <fcntl.h>
+#include <not-cancel.h>
+#include <string.h>
+#include <sys/mman.h>
+#include <sys/uio.h>
+
+static bool
+writev_for_fatal (int fd, const struct iovec *iov, size_t niov, size_t total)
+{
+  INTERNAL_SYSCALL_DECL (err);
+  ssize_t cnt;
+  do
+    cnt = INTERNAL_SYSCALL (writev, err, 3, fd, iov, niov);
+  while (INTERNAL_SYSCALL_ERROR_P (cnt, err)
+         && INTERNAL_SYSCALL_ERRNO (cnt, err) == EINTR);
+  return cnt == total;
+}
+#define WRITEV_FOR_FATAL	writev_for_fatal
+
+static void
+backtrace_and_maps (int do_abort, bool written, int fd)
+{
+  if (do_abort > 1 && written)
+    {
+      void *addrs[64];
+#define naddrs (sizeof (addrs) / sizeof (addrs[0]))
+      int n = __backtrace (addrs, naddrs);
+      if (n > 2)
+        {
+#define strnsize(str) str, strlen (str)
+#define writestr(str) write_not_cancel (fd, str)
+          writestr (strnsize ("======= Backtrace: =========\n"));
+          __backtrace_symbols_fd (addrs + 1, n - 1, fd);
+
+          writestr (strnsize ("======= Memory map: ========\n"));
+          int fd2 = open_not_cancel_2 ("/proc/self/maps", O_RDONLY);
+          char buf[1024];
+          ssize_t n2;
+          while ((n2 = read_not_cancel (fd2, buf, sizeof (buf))) > 0)
+            if (write_not_cancel (fd, buf, n2) != n2)
+              break;
+          close_not_cancel_no_status (fd2);
+        }
+    }
+}
+#define BEFORE_ABORT		backtrace_and_maps
+
+#include <sysdeps/posix/libc_fatal.c>