/*
- * Read code for Storage daemon
- * Kern Sibbald, November MM
- */
-/*
- Copyright (C) 2000, 2001, 2002 Kern Sibbald and John Walker
+ Bacula® - The Network Backup Solution
- This program is free software; you can redistribute it and/or
- modify it under the terms of the GNU General Public License as
- published by the Free Software Foundation; either version 2 of
- the License, or (at your option) any later version.
+ Copyright (C) 2000-2009 Free Software Foundation Europe e.V.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
+ The main author of Bacula is Kern Sibbald, with contributions from
+ many others, a complete list can be found in the file AUTHORS.
+ This program is Free Software; you can redistribute it and/or
+ modify it under the terms of version two of the GNU General Public
+ License as published by the Free Software Foundation and included
+ in the file LICENSE.
+
+ This program is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
- You should have received a copy of the GNU General Public
- License along with this program; if not, write to the Free
- Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- MA 02111-1307, USA.
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ 02110-1301, USA.
+ Bacula® is a registered trademark of Kern Sibbald.
+ The licensor of Bacula is the Free Software Foundation Europe
+ (FSFE), Fiduciary Program, Sumatrastrasse 25, 8006 Zürich,
+ Switzerland, email:ftf@fsfeurope.org.
+*/
+/*
+ * Read code for Storage daemon
+ *
+ * Kern Sibbald, November MM
+ *
+ * Version $Id$
*/
#include "bacula.h"
#include "stored.h"
/* Forward referenced subroutines */
-
-/* Variables used by Child process */
-/* Global statistics */
-/* Note, these probably should be in shared memory so that
- * they are truly global for all processes
- */
-extern struct s_shm *shm; /* shared memory structure */
-extern int FiledDataChan; /* File daemon data channel (port) */
+static bool record_cb(DCR *dcr, DEV_RECORD *rec);
/* Responses sent to the File daemon */
static char OK_data[] = "3000 OK data\n";
+static char FD_error[] = "3000 error\n";
static char rec_header[] = "rechdr %ld %ld %ld %ld %ld";
-/*
+/*
* Read Data and send to File Daemon
- * Returns: 0 on failure
- * 1 on success
+ * Returns: false on failure
+ * true on success
*/
-int do_read_data(JCR *jcr)
+bool do_read_data(JCR *jcr)
{
- BSOCK *ds;
- BSOCK *fd_sock = jcr->file_bsock;
- int ok = TRUE;
- DEVICE *dev;
- DEV_RECORD rec;
- DEV_BLOCK *block;
- char *hdr, *p;
-
-
+ BSOCK *fd = jcr->file_bsock;
+ bool ok = true;
+ DCR *dcr = jcr->read_dcr;
+
Dmsg0(20, "Start read data.\n");
- dev = jcr->device->dev;
+ if (!bnet_set_buffer_size(fd, dcr->device->max_network_buffer_size, BNET_SETBUF_WRITE)) {
+ return false;
+ }
- /* Tell File daemon we will send data */
- bnet_fsend(fd_sock, OK_data);
- Dmsg1(10, "bstored>filed: %s\n", fd_sock->msg);
+ if (jcr->NumReadVolumes == 0) {
+ Jmsg(jcr, M_FATAL, 0, _("No Volume names found for restore.\n"));
+ fd->fsend(FD_error);
+ return false;
+ }
- ds = fd_sock;
+ Dmsg2(200, "Found %d volumes names to restore. First=%s\n", jcr->NumReadVolumes,
+ jcr->VolList->VolumeName);
- if (!bnet_set_buffer_size(ds, MAX_NETWORK_BUFFER_SIZE, BNET_SETBUF_READ)) {
- return 0;
+ /* Ready device for reading */
+ if (!acquire_device_for_read(dcr)) {
+ fd->fsend(FD_error);
+ return false;
}
+ /* Tell File daemon we will send data */
+ fd->fsend(OK_data);
+ ok = read_records(dcr, record_cb, mount_next_read_volume);
- Dmsg1(20, "Begin read device=%s\n", dev_name(dev));
-
- block = new_block(dev);
+ /* Send end of data to FD */
+ fd->signal(BNET_EOD);
- /* Find out if we were passed multiple volumes */
- jcr->NumVolumes = 1;
- jcr->CurVolume = 1;
- /* Scan through VolumeNames terminating them and counting them */
- for (p = jcr->VolumeName; p && *p; ) {
- p = strchr(p, '|'); /* volume name separator */
- if (p) {
- *p++ = 0; /* Terminate name */
- jcr->NumVolumes++;
- }
+ if (!release_device(jcr->read_dcr)) {
+ ok = false;
}
- Dmsg1(20, "Found %d volumes names to restore.\n", jcr->NumVolumes);
+ Dmsg0(30, "Done reading.\n");
+ return ok;
+}
- /*
- * Ready device for reading, and read records
- */
- if (!acquire_device_for_read(jcr, dev, block)) {
- free_block(block);
- return 0;
+/*
+ * Called here for each record from read_records()
+ * Returns: true if OK
+ * false if error
+ */
+static bool record_cb(DCR *dcr, DEV_RECORD *rec)
+{
+ JCR *jcr = dcr->jcr;
+ BSOCK *fd = jcr->file_bsock;
+ bool ok = true;
+ POOLMEM *save_msg;
+ char ec1[50], ec2[50];
+
+ if (rec->FileIndex < 0) {
+ return true;
}
-
- memset(&rec, 0, sizeof(rec));
- rec.data = ds->msg; /* use socket message buffer */
- hdr = (char *) get_pool_memory(PM_MESSAGE);
-
- /*
- * ****FIXME**** enhance this to look for
- * more things than just a session.
- */
- for ( ;ok; ) {
- DEV_RECORD *record; /* for reading label of multi-volumes */
-
- if (job_cancelled(jcr)) {
- ok = FALSE;
- break;
- }
- /* Read Record */
- Dmsg1(500, "Main read_record. rem=%d\n", rec.remainder);
- if (!read_record(dev, block, &rec)) {
- Dmsg1(500, "Main read record failed. rem=%d\n", rec.remainder);
- if (dev->state & ST_EOT) {
- if (rec.remainder) {
- Dmsg0(500, "Not end of record.\n");
- }
- Dmsg2(90, "NumVolumes=%d CurVolume=%d\n", jcr->NumVolumes, jcr->CurVolume);
- if (jcr->NumVolumes > 1 && jcr->CurVolume < jcr->NumVolumes) {
- close_dev(dev);
- for (p=jcr->VolumeName; *p++; ) /* skip to next volume name */
- { }
- jcr->CurVolume++;
- Dmsg1(20, "There is another volume %s.\n", p);
- strcpy(jcr->VolumeName, p);
- dev->state &= ~ST_READ;
- if (!acquire_device_for_read(jcr, dev, block)) {
- Emsg2(M_ERROR, 0, "Cannot open Dev=%s, Vol=%s\n", dev_name(dev), p);
- ok = FALSE;
- break;
- }
- record = new_record();
- Dmsg1(500, "read record after new tape. rem=%d\n", record->remainder);
- read_record(dev, block, record); /* read vol label */
- dump_label_record(dev, record, 0);
- free_record(record);
- continue;
- }
- Dmsg0(90, "End of Device reached.\n");
- break; /* End of Tape */
- }
- if (dev->state & ST_EOF) {
- Dmsg0(90, "Got End of File. Trying again ...\n");
- continue; /* End of File */
- }
-
- Emsg2(M_ABORT, 0, "Read error on Record Header %s ERR=%s\n", dev_name(dev), strerror(errno));
- }
-
- /* Some sort of label? */
- if (rec.FileIndex < 0) {
- Dmsg1(40, "Got label = %d\n", rec.FileIndex);
- if (rec.FileIndex == EOM_LABEL) { /* end of tape? */
- Dmsg0(40, "Get EOM LABEL\n");
- break; /* yes, get out */
- }
- continue; /* ignore other labels */
- }
-
- if (rec.VolSessionId != jcr->read_VolSessionId ||
- rec.VolSessionTime != jcr->read_VolSessionTime) {
- Dmsg0(50, "Ignore record ids not equal\n");
- continue; /* ignore */
- }
-
- /* Generate Header parameters and send to File daemon
- * Note, we build header in hdr buffer to avoid wiping
- * out the data record
- */
- ds->msg = hdr;
- if (!bnet_fsend(ds, rec_header, rec.VolSessionId, rec.VolSessionTime,
- rec.FileIndex, rec.Stream, rec.data_len)) {
- Dmsg1(30, ">filed: Error Hdr=%s\n", ds->msg);
- ds->msg = rec.data;
- ok = FALSE;
- break;
- } else {
- Dmsg1(30, ">filed: Hdr=%s\n", ds->msg);
- }
-
- ds->msg = rec.data; /* restore data record address */
-
- /* Send data record to File daemon */
- ds->msglen = rec.data_len;
- Dmsg1(40, ">filed: send %d bytes data.\n", ds->msglen);
- if (!bnet_send(ds)) {
- Dmsg0(0, "Error sending to FD\n");
- Jmsg1(jcr, M_FATAL, 0, _("Error sending to File daemon. ERR=%s\n"),
- bnet_strerror(ds));
- ok = FALSE;
- }
+ Dmsg5(400, "Send to FD: SessId=%u SessTim=%u FI=%s Strm=%s, len=%d\n",
+ rec->VolSessionId, rec->VolSessionTime,
+ FI_to_ascii(ec1, rec->FileIndex),
+ stream_to_ascii(ec2, rec->Stream, rec->FileIndex),
+ rec->data_len);
+
+ /* Send record header to File daemon */
+ if (!fd->fsend(rec_header, rec->VolSessionId, rec->VolSessionTime,
+ rec->FileIndex, rec->Stream, rec->data_len)) {
+ Pmsg1(000, _(">filed: Error Hdr=%s\n"), fd->msg);
+ Jmsg1(jcr, M_FATAL, 0, _("Error sending to File daemon. ERR=%s\n"),
+ fd->bstrerror());
+ return false;
+ } else {
+ Dmsg1(400, ">filed: Hdr=%s\n", fd->msg);
}
- /* Send end of data to FD */
- bnet_sig(ds, BNET_EOF);
- if (!release_device(jcr, dev, block)) {
- ok = FALSE;
+
+ /* Send data record to File daemon */
+ save_msg = fd->msg; /* save fd message pointer */
+ fd->msg = rec->data; /* pass data directly to the FD */
+ fd->msglen = rec->data_len;
+ Dmsg1(400, ">filed: send %d bytes data.\n", fd->msglen);
+ if (!fd->send()) {
+ Pmsg1(000, _("Error sending to FD. ERR=%s\n"), fd->bstrerror());
+ Jmsg1(jcr, M_FATAL, 0, _("Error sending to File daemon. ERR=%s\n"),
+ fd->bstrerror());
+
+ ok = false;
}
- free_pool_memory(hdr);
- free_block(block);
- Dmsg0(30, "Done reading.\n");
- return ok ? 1 : 0;
+ fd->msg = save_msg; /* restore fd message pointer */
+ return ok;
}
projects / bacula / bacula / blobdiff