propagate from branch 'com.redhat.elfutils.roland.pending' (head e0c7abd450c9e49093cfae30af8a22782a74a403)

            to branch 'com.redhat.elfutils' (head 2c784d50eee72e33972c333138a3a28df304da63)

1 files changed, 110 insertions, 0 deletions

diff --git a/tests/dwfl-bug-fd-leak.c b/tests/dwfl-bug-fd-leak.c
new file mode 100644
index 00000000..c75a79b6
--- /dev/null
+++ b/tests/dwfl-bug-fd-leak.c
@@ -0,0 +1,110 @@
+/* Test program for libdwfl file decriptors leakage.
+   Copyright (C) 2007 Red Hat, Inc.
+   This file is part of Red Hat elfutils.
+
+   Red Hat elfutils is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by the
+   Free Software Foundation; version 2 of the License.
+
+   Red Hat elfutils 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
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License along
+   with Red Hat elfutils; if not, write to the Free Software Foundation,
+   Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA.
+
+   Red Hat elfutils is an included package of the Open Invention Network.
+   An included package of the Open Invention Network is a package for which
+   Open Invention Network licensees cross-license their patents.  No patent
+   license is granted, either expressly or impliedly, by designation as an
+   included package.  Should you wish to participate in the Open Invention
+   Network licensing program, please visit www.openinventionnetwork.com
+   <http://www.openinventionnetwork.com>.  */
+
+#include <config.h>
+#include <assert.h>
+#include <inttypes.h>
+#include <stdio.h>
+#include <stdio_ext.h>
+#include <locale.h>
+#include <dirent.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <error.h>
+#include <unistd.h>
+#include <dwarf.h>
+#include <sys/resource.h>
+#include ELFUTILS_HEADER(dwfl)
+
+
+static Dwfl *
+elfutils_open (pid_t pid, Dwarf_Addr address)
+{
+  static char *debuginfo_path;
+  static const Dwfl_Callbacks proc_callbacks =
+    {
+      .find_debuginfo = dwfl_standard_find_debuginfo,
+      .debuginfo_path = &debuginfo_path,
+
+      .find_elf = dwfl_linux_proc_find_elf,
+    };
+  Dwfl *dwfl = dwfl_begin (&proc_callbacks);
+  if (dwfl == NULL)
+    error (2, 0, "dwfl_begin: %s", dwfl_errmsg (-1));
+
+  int result = dwfl_linux_proc_report (dwfl, pid);
+  if (result < 0)
+    error (2, 0, "dwfl_linux_proc_report: %s", dwfl_errmsg (-1));
+  else if (result > 0)
+    error (2, result, "dwfl_linux_proc_report");
+
+  if (dwfl_report_end (dwfl, NULL, NULL) != 0)
+    error (2, 0, "dwfl_report_end: %s", dwfl_errmsg (-1));
+
+  Dwarf_Addr bias;
+  Dwarf *dbg = dwfl_addrdwarf (dwfl, address, &bias);
+  if (dbg != NULL)
+    {
+      Elf *elf = dwarf_getelf (dbg);
+      if (elf == NULL)
+	error (2, 0, "dwarf_getelf: %s", dwarf_errmsg (-1));
+    }
+  else
+    {
+      Elf *elf = dwfl_module_getelf (dwfl_addrmodule (dwfl, address), &bias);
+      if (elf == NULL)
+	error (2, 0, "dwfl_module_getelf: %s", dwfl_errmsg (-1));
+    }
+
+  return dwfl;
+}
+
+static void
+elfutils_close (Dwfl *dwfl)
+{
+  dwfl_end (dwfl);
+}
+
+int
+main (void)
+{
+  /* We use no threads here which can interfere with handling a stream.  */
+  (void) __fsetlocking (stdout, FSETLOCKING_BYCALLER);
+
+  /* Set locale.  */
+  (void) setlocale (LC_ALL, "");
+
+  struct rlimit fd_limit = { .rlim_cur = 32, .rlim_max = 32 };
+  if (setrlimit (RLIMIT_NOFILE, &fd_limit) < 0)
+    error (2, errno, "setrlimit");
+
+  for (int i = 0; i < 5000; ++i)
+    {
+      Dwfl *dwfl = elfutils_open (getpid (), (Dwarf_Addr) main);
+      elfutils_close (dwfl);
+    }
+
+  return 0;
+}