2 * Bacula File Daemon backup.c send file attributes and data
3 * to the Storage daemon.
5 * Kern Sibbald, March MM
11 Copyright (C) 2000-2003 Kern Sibbald and John Walker
13 This program is free software; you can redistribute it and/or
14 modify it under the terms of the GNU General Public License as
15 published by the Free Software Foundation; either version 2 of
16 the License, or (at your option) any later version.
18 This program is distributed in the hope that it will be useful,
19 but WITHOUT ANY WARRANTY; without even the implied warranty of
20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
21 General Public License for more details.
23 You should have received a copy of the GNU General Public
24 License along with this program; if not, write to the Free
25 Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
33 static int save_file(FF_PKT *ff_pkt, void *pkt);
36 * Find all the requested files and send them
37 * to the Storage daemon.
39 * Note, we normally carry on a one-way
40 * conversation from this point on with the SD, simply blasting
41 * data to him. To properly know what is going on, we
42 * also run a "heartbeat" monitor which reads the socket and
43 * reacts accordingly (at the moment it has nothing to do
44 * except echo the heartbeat to the Director).
47 int blast_data_to_storage_daemon(JCR *jcr, char *addr)
52 sd = jcr->store_bsock;
54 set_jcr_job_status(jcr, JS_Running);
56 Dmsg1(110, "bfiled: opened data connection %d to stored\n", sd->fd);
58 if (!bnet_set_buffer_size(sd, MAX_NETWORK_BUFFER_SIZE, BNET_SETBUF_WRITE)) {
59 set_jcr_job_status(jcr, JS_ErrorTerminated);
63 jcr->buf_size = sd->msglen;
64 /* Adjust for compression so that output buffer is
65 * 12 bytes + 0.1% larger than input buffer plus 18 bytes.
66 * This gives a bit extra plus room for the sparse addr if any.
67 * Note, we adjust the read size to be smaller so that the
68 * same output buffer can be used without growing it.
70 jcr->compress_buf_size = jcr->buf_size + ((jcr->buf_size+999) / 1000) + 30;
71 jcr->compress_buf = get_memory(jcr->compress_buf_size);
73 Dmsg1(100, "set_find_options ff=%p\n", jcr->ff);
74 set_find_options((FF_PKT *)jcr->ff, jcr->incremental, jcr->mtime, jcr->mtime_only);
75 Dmsg0(110, "start find files\n");
77 start_heartbeat_monitor(jcr);
79 /* Subroutine save_file() is called for each file */
80 if (!find_files(jcr, (FF_PKT *)jcr->ff, save_file, (void *)jcr)) {
82 set_jcr_job_status(jcr, JS_ErrorTerminated);
85 stop_heartbeat_monitor(jcr);
87 bnet_sig(sd, BNET_EOD); /* end data connection */
93 if (jcr->compress_buf) {
94 free_pool_memory(jcr->compress_buf);
95 jcr->compress_buf = NULL;
97 Dmsg1(110, "end blast_data stat=%d\n", stat);
102 * Called here by find() for each file included.
104 * *****FIXME***** add FSMs File System Modules
106 * Send the file and its data to the Storage daemon.
108 static int save_file(FF_PKT *ff_pkt, void *vjcr)
110 char attribs[MAXSTRING];
111 char attribsEx[MAXSTRING];
112 int stat, attr_stream, data_stream;
113 struct MD5Context md5c;
114 struct SHA1Context sha1c;
117 unsigned char signature[30]; /* large enough for either signature */
119 JCR *jcr = (JCR *)vjcr;
122 if (job_canceled(jcr)) {
126 sd = jcr->store_bsock;
127 jcr->num_files_examined++; /* bump total file count */
129 switch (ff_pkt->type) {
130 case FT_LNKSAVED: /* Hard linked, file already saved */
131 Dmsg2(130, "FT_LNKSAVED hard link: %s => %s\n", ff_pkt->fname, ff_pkt->link);
134 Dmsg1(130, "FT_REGE saving: %s\n", ff_pkt->fname);
137 Dmsg1(130, "FT_REG saving: %s\n", ff_pkt->fname);
140 Dmsg2(130, "FT_LNK saving: %s -> %s\n", ff_pkt->fname, ff_pkt->link);
143 Dmsg1(130, "FT_DIR saving: %s\n", ff_pkt->link);
146 Dmsg1(130, "FT_SPEC saving: %s\n", ff_pkt->fname);
149 Dmsg1(130, "FT_RAW saving: %s\n", ff_pkt->fname);
152 Dmsg1(130, "FT_FIFO saving: %s\n", ff_pkt->fname);
155 Jmsg(jcr, M_NOTSAVED, -1, _(" Could not access %s: ERR=%s\n"), ff_pkt->fname,
156 strerror(ff_pkt->ff_errno));
160 Jmsg(jcr, M_NOTSAVED, -1, _(" Could not follow link %s: ERR=%s\n"), ff_pkt->fname,
161 strerror(ff_pkt->ff_errno));
165 Jmsg(jcr, M_NOTSAVED, -1, _(" Could not stat %s: ERR=%s\n"), ff_pkt->fname,
166 strerror(ff_pkt->ff_errno));
171 Jmsg(jcr, M_SKIPPED, -1, _(" Unchanged file skipped: %s\n"), ff_pkt->fname);
174 Jmsg(jcr, M_NOTSAVED, -1, _(" Archive file not saved: %s\n"), ff_pkt->fname);
177 Jmsg(jcr, M_SKIPPED, -1, _(" Recursion turned off. Directory skipped: %s\n"),
181 Jmsg(jcr, M_SKIPPED, -1, _(" File system change prohibited. Directory skipped. %s\n"),
185 Jmsg(jcr, M_NOTSAVED, -1, _(" Could not open directory %s: ERR=%s\n"), ff_pkt->fname,
186 strerror(ff_pkt->ff_errno));
190 Jmsg(jcr, M_NOTSAVED, 0, _(" Unknown file type %d; not saved: %s\n"), ff_pkt->type, ff_pkt->fname);
198 * Open any file with data that we intend to save.
199 * Note, if is_win32_backup, we must open the Directory so that
200 * the BackupRead will save its permissions and ownership streams.
202 if (ff_pkt->type != FT_LNKSAVED && (S_ISREG(ff_pkt->statp.st_mode) &&
203 ff_pkt->statp.st_size > 0) ||
204 ff_pkt->type == FT_RAW || ff_pkt->type == FT_FIFO ||
205 (is_win32_backup() && ff_pkt->type == FT_DIR)) {
207 if (ff_pkt->type == FT_FIFO) {
208 tid = start_thread_timer(pthread_self(), 60);
212 if (bopen(&ff_pkt->bfd, ff_pkt->fname, O_RDONLY | O_BINARY, 0) < 0) {
213 ff_pkt->ff_errno = errno;
214 Jmsg(jcr, M_NOTSAVED, -1, _(" Cannot open %s: ERR=%s.\n"), ff_pkt->fname,
215 berror(&ff_pkt->bfd));
217 stop_thread_timer(tid);
220 stop_thread_timer(tid);
223 Dmsg1(130, "bfiled: sending %s to stored\n", ff_pkt->fname);
225 /* Find what data stream we will use, then encode the attributes */
226 data_stream = select_data_stream(ff_pkt);
227 encode_stat(attribs, ff_pkt, data_stream);
229 /* Now possibly extend the attributes */
230 attr_stream = encode_attribsEx(jcr, attribsEx, ff_pkt);
232 Dmsg3(200, "File %s\nattribs=%s\nattribsEx=%s\n", ff_pkt->fname, attribs, attribsEx);
235 jcr->JobFiles++; /* increment number of files sent */
236 ff_pkt->FileIndex = jcr->JobFiles; /* return FileIndex */
237 pm_strcpy(&jcr->last_fname, ff_pkt->fname);
241 * Send Attributes header to Storage daemon
242 * <file-index> <stream> <info>
244 if (!bnet_fsend(sd, "%ld %d 0", jcr->JobFiles, attr_stream)) {
245 if (is_bopen(&ff_pkt->bfd)) {
246 bclose(&ff_pkt->bfd);
248 set_jcr_job_status(jcr, JS_ErrorTerminated);
251 Dmsg1(100, ">stored: attrhdr %s\n", sd->msg);
254 * Send file attributes to Storage daemon
257 * Filename (full path)
259 * Link name (if type==FT_LNK or FT_LNKSAVED)
260 * Encoded extended-attributes (for Win32)
262 * For a directory, link is the same as fname, but with trailing
263 * slash. For a linked file, link is the link.
265 if (ff_pkt->type == FT_LNK || ff_pkt->type == FT_LNKSAVED) {
266 Dmsg2(100, "Link %s to %s\n", ff_pkt->fname, ff_pkt->link);
267 stat = bnet_fsend(sd, "%ld %d %s%c%s%c%s%c%s%c", jcr->JobFiles,
268 ff_pkt->type, ff_pkt->fname, 0, attribs, 0, ff_pkt->link, 0,
270 } else if (ff_pkt->type == FT_DIR) {
271 /* Here link is the canonical filename (i.e. with trailing slash) */
272 stat = bnet_fsend(sd, "%ld %d %s%c%s%c%c%s%c", jcr->JobFiles,
273 ff_pkt->type, ff_pkt->link, 0, attribs, 0, 0, attribsEx, 0);
275 stat = bnet_fsend(sd, "%ld %d %s%c%s%c%c%s%c", jcr->JobFiles,
276 ff_pkt->type, ff_pkt->fname, 0, attribs, 0, 0, attribsEx, 0);
279 Dmsg2(100, ">stored: attr len=%d: %s\n", sd->msglen, sd->msg);
281 if (is_bopen(&ff_pkt->bfd)) {
282 bclose(&ff_pkt->bfd);
284 set_jcr_job_status(jcr, JS_ErrorTerminated);
287 bnet_sig(sd, BNET_EOD); /* indicate end of attributes data */
290 * If the file has data, read it and send to the Storage daemon
293 if (is_bopen(&ff_pkt->bfd)) {
294 uint64_t fileAddr = 0; /* file address */
296 int rsize = jcr->buf_size; /* read buffer size */
299 rbuf = sd->msg; /* read buffer */
300 wbuf = sd->msg; /* write buffer */
303 Dmsg1(100, "Saving data, type=%d\n", ff_pkt->type);
307 uLong compress_len, max_compress_len = 0;
308 const Bytef *cbuf = NULL;
310 if (ff_pkt->flags & FO_GZIP) {
311 if (ff_pkt->flags & FO_SPARSE) {
312 cbuf = (Bytef *)jcr->compress_buf + SPARSE_FADDR_SIZE;
313 max_compress_len = jcr->compress_buf_size - SPARSE_FADDR_SIZE;
315 cbuf = (Bytef *)jcr->compress_buf;
316 max_compress_len = jcr->compress_buf_size; /* set max length */
318 wbuf = jcr->compress_buf; /* compressed output here */
323 * Send Data header to Storage daemon
324 * <file-index> <stream> <info>
326 if (!bnet_fsend(sd, "%ld %d 0", jcr->JobFiles, data_stream)) {
327 bclose(&ff_pkt->bfd);
328 set_jcr_job_status(jcr, JS_ErrorTerminated);
331 Dmsg1(100, ">stored: datahdr %s\n", sd->msg);
333 if (ff_pkt->flags & FO_MD5) {
335 } else if (ff_pkt->flags & FO_SHA1) {
340 * Make space at beginning of buffer for fileAddr because this
341 * same buffer will be used for writing if compression if off.
343 if (ff_pkt->flags & FO_SPARSE) {
344 rbuf += SPARSE_FADDR_SIZE;
345 rsize -= SPARSE_FADDR_SIZE;
351 while ((sd->msglen=bread(&ff_pkt->bfd, rbuf, rsize)) > 0) {
354 /* Check for sparse blocks */
355 if (ff_pkt->flags & FO_SPARSE) {
357 if (sd->msglen == rsize &&
358 (fileAddr+sd->msglen < (uint64_t)ff_pkt->statp.st_size)) {
359 sparseBlock = is_buf_zero(rbuf, rsize);
362 ser_begin(wbuf, SPARSE_FADDR_SIZE);
363 ser_uint64(fileAddr); /* store fileAddr in begin of buffer */
366 jcr->ReadBytes += sd->msglen; /* count bytes read */
367 fileAddr += sd->msglen;
369 /* Update MD5 if requested */
370 if (ff_pkt->flags & FO_MD5) {
371 MD5Update(&md5c, (unsigned char *)rbuf, sd->msglen);
373 } else if (ff_pkt->flags & FO_SHA1) {
374 SHA1Update(&sha1c, (unsigned char *)rbuf, sd->msglen);
379 /* Do compression if turned on */
380 if (!sparseBlock && ff_pkt->flags & FO_GZIP) {
382 compress_len = max_compress_len;
383 Dmsg4(400, "cbuf=0x%x len=%u rbuf=0x%x len=%u\n", cbuf, compress_len,
385 /* NOTE! This call modifies compress_len !!! */
386 if ((zstat=compress2((Bytef *)cbuf, &compress_len,
387 (const Bytef *)rbuf, (uLong)sd->msglen,
388 ff_pkt->GZIP_level)) != Z_OK) {
389 Jmsg(jcr, M_FATAL, 0, _("Compression error: %d\n"), zstat);
392 bclose(&ff_pkt->bfd);
393 set_jcr_job_status(jcr, JS_ErrorTerminated);
396 Dmsg2(400, "compressed len=%d uncompressed len=%d\n",
397 compress_len, sd->msglen);
399 sd->msglen = compress_len; /* set compressed length */
403 /* Send the buffer to the Storage daemon */
405 if (ff_pkt->flags & FO_SPARSE) {
406 sd->msglen += SPARSE_FADDR_SIZE; /* include fileAddr in size */
408 sd->msg = wbuf; /* set correct write buffer */
409 if (!bnet_send(sd)) {
410 sd->msg = msgsave; /* restore bnet buffer */
412 bclose(&ff_pkt->bfd);
413 set_jcr_job_status(jcr, JS_ErrorTerminated);
417 Dmsg1(130, "Send data to SD len=%d\n", sd->msglen);
419 jcr->JobBytes += sd->msglen; /* count bytes saved possibly compressed */
420 sd->msg = msgsave; /* restore read buffer */
422 } /* end while read file data */
425 if (sd->msglen < 0) {
426 Jmsg(jcr, M_ERROR, 0, _("Read error on file %s. ERR=%s\n"),
427 ff_pkt->fname, berror(&ff_pkt->bfd));
430 bclose(&ff_pkt->bfd); /* close file */
431 if (!bnet_sig(sd, BNET_EOD)) { /* indicate end of file data */
432 set_jcr_job_status(jcr, JS_ErrorTerminated);
437 /* Terminate any MD5 signature and send it to Storage daemon and the Director */
438 if (gotMD5 && ff_pkt->flags & FO_MD5) {
439 MD5Final(signature, &md5c);
440 bnet_fsend(sd, "%ld %d 0", jcr->JobFiles, STREAM_MD5_SIGNATURE);
441 Dmsg1(100, "bfiled>stored:header %s\n", sd->msg);
442 memcpy(sd->msg, signature, 16);
445 bnet_sig(sd, BNET_EOD); /* end of MD5 */
448 } else if (gotSHA1 && ff_pkt->flags & FO_SHA1) {
449 /* Terminate any SHA1 signature and send it to Storage daemon and the Director */
450 SHA1Final(&sha1c, signature);
451 bnet_fsend(sd, "%ld %d 0", jcr->JobFiles, STREAM_SHA1_SIGNATURE);
452 Dmsg1(100, "bfiled>stored:header %s\n", sd->msg);
453 memcpy(sd->msg, signature, 20);
456 bnet_sig(sd, BNET_EOD); /* end of SHA1 */