2 * Create a file, and reset the modes
4 * Kern Sibbald, November MM
10 Copyright (C) 2000-2003 Kern Sibbald and John Walker
12 This program is free software; you can redistribute it and/or
13 modify it under the terms of the GNU General Public License as
14 published by the Free Software Foundation; either version 2 of
15 the License, or (at your option) any later version.
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 General Public License for more details.
22 You should have received a copy of the GNU General Public
23 License along with this program; if not, write to the Free
24 Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
33 #define S_IRWXUGO (S_IRWXU | S_IRWXG | S_IRWXO)
41 static int separate_path_and_file(JCR *jcr, char *fname, char *ofile);
42 static int path_already_seen(char *path, int pnl);
46 * Create the file, or the directory
48 * fname is the original filename
49 * ofile is the output filename (may be in a different directory)
51 * Returns: CF_SKIP if file should be skipped
53 * CF_EXTRACT file created and data to restore
54 * CF_CREATED file created no data to restore
56 * Note, we create the file here, except for special files,
57 * we do not set the attributes because we want to first
58 * write the file, then when the writing is done, set the
60 * So, we return with the file descriptor open for normal
64 int create_file(JCR *jcr, ATTR *attr, BFILE *ofd, int replace)
66 int new_mode, parent_mode, mode;
74 new_mode = attr->statp.st_mode;
75 Dmsg2(300, "newmode=%x file=%s\n", new_mode, attr->ofname);
76 parent_mode = S_IWUSR | S_IXUSR | new_mode;
77 gid = attr->statp.st_gid;
78 uid = attr->statp.st_uid;
80 Dmsg2(400, "Replace=%c %d\n", (char)replace, replace);
81 if (lstat(attr->ofname, &mstatp) == 0) {
85 if (attr->statp.st_mtime <= mstatp.st_mtime) {
86 Jmsg(jcr, M_SKIPPED, 0, _("File skipped. Not newer: %s\n"), attr->ofname);
92 if (attr->statp.st_mtime >= mstatp.st_mtime) {
93 Jmsg(jcr, M_SKIPPED, 0, _("File skipped. Not older: %s\n"), attr->ofname);
99 Jmsg(jcr, M_SKIPPED, 0, _("File skipped. Already exists: %s\n"), attr->ofname);
106 switch (attr->type) {
107 case FT_LNKSAVED: /* Hard linked, file already saved */
112 case FT_REGE: /* empty file */
113 case FT_REG: /* regular file */
115 /* Get rid of old copy */
116 if (unlink(attr->ofname) == -1) {
117 Jmsg(jcr, M_ERROR, 0, _("File %s already exists and could not be replaced. ERR=%s.\n"),
118 attr->ofname, strerror(errno));
119 /* Continue despite error */
123 * Here we do some preliminary work for all the above
124 * types to create the path to the file if it does
125 * not already exist. Below, we will split to
126 * do the file type specific work
128 pnl = separate_path_and_file(jcr, attr->fname, attr->ofname);
134 * If path length is <= 0 we are making a file in the root
135 * directory. Assume that the directory already exists.
139 savechr = attr->ofname[pnl];
140 attr->ofname[pnl] = 0; /* terminate path */
142 if (!path_already_seen(attr->ofname, pnl)) {
143 Dmsg1(50, "Make path %s\n", attr->ofname);
145 * If we need to make the directory, ensure that it is with
146 * execute bit set (i.e. parent_mode), and preserve what already
147 * exists. Normally, this should do nothing.
149 if (make_path(jcr, attr->ofname, parent_mode, parent_mode, uid, gid, 1, NULL) != 0) {
150 Dmsg1(0, "Could not make path. %s\n", attr->ofname);
154 attr->ofname[pnl] = savechr; /* restore full name */
157 /* Now we do the specific work for each file type */
161 Dmsg1(100, "Create file %s\n", attr->ofname);
162 mode = O_WRONLY | O_CREAT | O_TRUNC | O_BINARY; /* O_NOFOLLOW; */
163 if (IS_CTG(attr->statp.st_mode)) {
164 mode |= O_CTG; /* set contiguous bit if needed */
166 Dmsg1(50, "Create file: %s\n", attr->ofname);
167 if ((bopen(ofd, attr->ofname, mode, S_IRUSR | S_IWUSR)) < 0) {
168 Jmsg2(jcr, M_ERROR, 0, _("Could not create %s: ERR=%s\n"),
169 attr->ofname, berror(ofd));
174 case FT_RAW: /* Bacula raw device e.g. /dev/sda1 */
175 case FT_FIFO: /* Bacula fifo to save data */
177 if (S_ISFIFO(attr->statp.st_mode)) {
178 Dmsg1(200, "Restore fifo: %s\n", attr->ofname);
179 if (mkfifo(attr->ofname, attr->statp.st_mode) != 0 && errno != EEXIST) {
180 Jmsg2(jcr, M_ERROR, 0, _("Cannot make fifo %s: ERR=%s\n"),
181 attr->ofname, strerror(errno));
185 Dmsg1(200, "Restore node: %s\n", attr->ofname);
186 if (mknod(attr->ofname, attr->statp.st_mode, attr->statp.st_rdev) != 0 && errno != EEXIST) {
187 Jmsg2(jcr, M_ERROR, 0, _("Cannot make node %s: ERR=%s\n"),
188 attr->ofname, strerror(errno));
192 if (attr->type == FT_RAW || attr->type == FT_FIFO) {
194 Dmsg1(200, "FT_RAW|FT_FIFO %s\n", attr->ofname);
195 mode = O_WRONLY | O_BINARY;
196 /* Timeout open() in 60 seconds */
197 if (attr->type == FT_FIFO) {
198 tid = start_thread_timer(pthread_self(), 60);
202 if ((bopen(ofd, attr->ofname, mode, 0)) < 0) {
203 Jmsg2(jcr, M_ERROR, 0, _("Could not open %s: ERR=%s\n"),
204 attr->ofname, berror(ofd));
205 stop_thread_timer(tid);
208 stop_thread_timer(tid);
211 Dmsg1(200, "FT_SPEC %s\n", attr->ofname);
215 Dmsg2(130, "FT_LNK should restore: %s -> %s\n", attr->ofname, attr->olname);
216 if (symlink(attr->olname, attr->ofname) != 0 && errno != EEXIST) {
217 Jmsg3(jcr, M_ERROR, 0, _("Could not symlink %s -> %s: ERR=%s\n"),
218 attr->ofname, attr->olname, strerror(errno));
223 case FT_LNKSAVED: /* Hard linked, file already saved */
224 Dmsg2(130, "Hard link %s => %s\n", attr->ofname, attr->olname);
225 if (link(attr->olname, attr->ofname) != 0) {
226 Jmsg3(jcr, M_ERROR, 0, _("Could not hard link %s -> %s: ERR=%s\n"),
227 attr->ofname, attr->olname, strerror(errno));
232 } /* End inner switch */
235 Dmsg2(200, "Make dir mode=%o dir=%s\n", new_mode, attr->ofname);
236 if (make_path(jcr, attr->ofname, new_mode, parent_mode, uid, gid, 0, NULL) != 0) {
240 * If we are using the Win32 Backup API, we open the
241 * directory so that the security info will be read
244 if (is_win32_backup()) {
245 if ((bopen(ofd, attr->ofname, O_WRONLY|O_BINARY, 0)) < 0) {
246 Jmsg2(jcr, M_ERROR, 0, _("Could not open %s: ERR=%s\n"),
247 attr->ofname, berror(ofd));
255 /* The following should not occur */
265 Jmsg2(jcr, M_ERROR, 0, _("Original file %s not saved: type=%d\n"), attr->fname, attr->type);
268 Jmsg2(jcr, M_ERROR, 0, _("Unknown file type %d; not restored: %s\n"), attr->type, attr->fname);
275 * Returns: > 0 index into path where last path char is.
277 * -1 filename is zero length
279 static int separate_path_and_file(JCR *jcr, char *fname, char *ofile)
284 /* Separate pathname and filename */
285 for (p=f=ofile; *p; p++) {
287 f = p; /* possible filename */
296 /* The filename length must not be zero here because we
297 * are dealing with a file (i.e. FT_REGE or FT_REG).
299 Jmsg1(jcr, M_ERROR, 0, _("Zero length filename: %s\n"), fname);
306 static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
309 * Primitive caching of path to prevent recreating a pathname
310 * each time as long as we remain in the same directory.
312 static int path_already_seen(char *path, int pnl)
314 static int cached_pnl = 0;
315 static char cached_path[1000];
318 if (cached_pnl == pnl && strcmp(path, cached_path) == 0) {
322 if (pnl < (int)(sizeof(cached_path)-1)) {
323 strcpy(cached_path, path);