2 Bacula® - The Network Backup Solution
4 Copyright (C) 2007-2010 Free Software Foundation Europe e.V.
6 The main author of Bacula is Kern Sibbald, with contributions from
7 many others, a complete list can be found in the file AUTHORS.
8 This program is Free Software; you can redistribute it and/or
9 modify it under the terms of version three of the GNU Affero General Public
10 License as published by the Free Software Foundation and included
13 This program is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU Affero General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
23 Bacula® is a registered trademark of Kern Sibbald.
24 The licensor of Bacula is the Free Software Foundation Europe
25 (FSFE), Fiduciary Program, Sumatrastrasse 25, 8006 Zürich,
26 Switzerland, email:ftf@fsfeurope.org.
30 * Kern Sibbald, August MMVII
38 * Attempt to save the current working directory by various means so that
39 * we can optimize code by doing a cwd and then restore the cwd.
43 static bool fchdir_failed = false; /* set if we get a fchdir failure */
45 static bool fchdir_failed = true; /* set if we get a fchdir failure */
49 * Save current working directory.
53 bool saveCWD::save(JCR *jcr)
55 release(); /* clean up */
57 m_fd = open(".", O_RDONLY);
60 Jmsg1(jcr, M_ERROR, 0, _("Cannot open current directory: ERR=%s\n"), be.bstrerror());
67 POOLMEM *buf = get_memory(5000);
68 m_cwd = (POOLMEM *)getcwd(buf, sizeof_pool_memory(buf));
71 Jmsg1(jcr, M_ERROR, 0, _("Cannot get current directory: ERR=%s\n"), be.bstrerror());
72 free_pool_memory(buf);
82 * Restore previous working directory.
86 bool saveCWD::restore(JCR *jcr)
93 if (fchdir(m_fd) != 0) {
95 Jmsg1(jcr, M_ERROR, 0, _("Cannot reset current directory: ERR=%s\n"), be.bstrerror());
99 chdir("/"); /* punt */
104 if (chdir(m_cwd) < 0) {
106 Jmsg1(jcr, M_ERROR, 0, _("Cannot reset current directory: ERR=%s\n"), be.bstrerror());
108 free_pool_memory(m_cwd);
115 void saveCWD::release()
126 free_pool_memory(m_cwd);