1 /* Copyright (C) 2008 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by David Bartley <dtbartle@csclub.uwaterloo.ca>, 2008.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
22 #include <sys/resource.h>
24 /* Docs: http://docs.sun.com/app/docs/doc/816-5168/fdwalk-3c */
26 int fdwalk (int (*func)(void *, int), void *cd)
31 dir = opendir ("/proc/self/fd");
34 /* Note that fdwalk is not required to be thread-safe so we don't need to
35 use the _r version. */
36 struct dirent *dirent;
37 while ((dirent = readdir (dir)))
41 if (dirent->d_name[0] == '.')
43 fd = atoi (dirent->d_name);
44 if (fd == dirfd (dir))
46 res = (*func)(cd, fd);
51 (void) closedir (dir);
58 if (getrlimit (RLIMIT_NOFILE, &rlim) != 0)
60 for (fd = 0; fd < rlim.rlim_max; fd++)
62 res = (*func)(cd, fd);