2 Bacula® - The Network Backup Solution
4 Copyright (C) 2007-2011 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, September MMVII
32 * This is tricky code, especially when writing from scratch. Fortunately,
33 * a non-copyrighted version of mkdir was available to consult.
35 * ***FIXME*** the mkpath code could be significantly optimized by
36 * walking up the path chain from the bottom until it either gets
37 * to the top or finds an existing directory then walk back down
38 * creating the path components. Currently, it always starts at
39 * the top, which can be rather inefficient for long path names.
45 static bool makedir(JCR *jcr, char *path, mode_t mode, int *created)
49 if (mkdir(path, mode) != 0) {
52 if (stat(path, &statp) != 0) {
53 Jmsg2(jcr, M_ERROR, 0, _("Cannot create directory %s: ERR=%s\n"),
54 path, be.bstrerror());
56 } else if (!S_ISDIR(statp.st_mode)) {
57 Jmsg1(jcr, M_ERROR, 0, _("%s exists but is not a directory.\n"), path);
60 return true; /* directory exists */
66 static void set_own_mod(ATTR *attr, char *path, uid_t owner, gid_t group, mode_t mode)
68 if (chown(path, owner, group) != 0 && attr->uid == 0
74 Jmsg2(attr->jcr, M_WARNING, 0, _("Cannot change owner and/or group of %s: ERR=%s\n"),
75 path, be.bstrerror());
77 if (chmod(path, mode) != 0 && attr->uid == 0) {
79 Jmsg2(attr->jcr, M_WARNING, 0, _("Cannot change permissions of %s: ERR=%s\n"),
80 path, be.bstrerror());
85 * mode is the mode bits to use in creating a new directory
87 * parent_mode are the parent's modes if we need to create parent
90 * owner and group are to set on any created dirs
92 * keep_dir_modes if set means don't change mode bits if dir exists
94 bool makepath(ATTR *attr, const char *apath, mode_t mode, mode_t parent_mode,
95 uid_t owner, gid_t group, int keep_dir_modes)
99 char *path = (char *)apath;
107 int max_dirs = (int)sizeof(new_dir);
108 JCR *jcr = attr->jcr;
110 if (stat(path, &statp) == 0) { /* Does dir exist? */
111 if (!S_ISDIR(statp.st_mode)) {
112 Jmsg1(jcr, M_ERROR, 0, _("%s exists but is not a directory.\n"), path);
115 /* Full path exists */
116 if (keep_dir_modes) {
119 set_own_mod(attr, path, owner, group, mode);
125 path = (char *)alloca(len+1);
126 bstrncpy(path, apath, len+1);
127 strip_trailing_slashes(path);
129 * Now for one of the complexities. If we are not running as root,
130 * then if the parent_mode does not have wx user perms, or we are
131 * setting the userid or group, and the parent_mode has setuid, setgid,
132 * or sticky bits, we must create the dir with open permissions, then
133 * go back and patch all the dirs up with the correct perms.
134 * Solution, set everything to 0777, then go back and reset them at the
139 #if defined(HAVE_WIN32)
140 /* Validate drive letter */
141 if (path[1] == ':') {
142 char drive[4] = "X:\\";
146 UINT drive_type = GetDriveType(drive);
148 if (drive_type == DRIVE_UNKNOWN || drive_type == DRIVE_NO_ROOT_DIR) {
149 Jmsg1(jcr, M_ERROR, 0, _("%c: is not a valid drive.\n"), path[0]);
153 if (path[2] == '\0') { /* attempt to create a drive */
155 goto bail_out; /* OK, it is already there */
166 /* Skip leading slash(es) */
167 while (IsPathSeparator(*p)) {
170 while ((p = first_path_separator(p))) {
174 if (!makedir(jcr, path, tmode, &created)) {
177 Dmsg2(400, "makedir: created=%d %s\n", created, path);
178 if (ndir < max_dirs) {
179 new_dir[ndir++] = created;
182 while (IsPathSeparator(*p)) {
186 /* Create final component */
187 if (!makedir(jcr, path, tmode, &created)) {
190 Dmsg2(400, "makedir: created=%d %s\n", created, path);
191 if (ndir < max_dirs) {
192 new_dir[ndir++] = created;
194 if (ndir >= max_dirs) {
195 Jmsg0(jcr, M_WARNING, 0, _("Too many subdirectories. Some permissions not reset.\n"));
198 /* Now set the proper owner and modes */
199 #if defined(HAVE_WIN32)
200 if (path[1] == ':') {
208 /* Skip leading slash(es) */
209 while (IsPathSeparator(*p)) {
212 while ((p = first_path_separator(p))) {
216 if (i < ndir && new_dir[i++] && !keep_dir_modes) {
217 set_own_mod(attr, path, owner, group, parent_mode);
220 while (IsPathSeparator(*p)) {
225 /* Set for final component */
226 if (i < ndir && new_dir[i++]) {
227 set_own_mod(attr, path, owner, group, mode);