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/* Test program for libdwfl file decriptors leakage.
Copyright (C) 2007, 2008 Red Hat, Inc.
This file is part of elfutils.
This file 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; either version 3 of the License, or
(at your option) any later version.
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 this program. If not, see <http://www.gnu.org/licenses/>. */
#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) (uintptr_t) &main);
elfutils_close (dwfl);
}
return 0;
}
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