void dvd_remove_empty_part(DCR *dcr)
{
DEVICE *dev = dcr->dev;
/* Remove the last part file if it is empty */
if (dev->is_dvd() && dev->num_dvd_parts > 0) {
struct stat statp;
uint32_t part_save = dev->part;
POOL_MEM archive_name(PM_FNAME);
int status;
dev->part = dev->num_dvd_parts;
make_spooled_dvd_filename(dev, archive_name);
/* Check that the part file is empty */
status = stat(archive_name.c_str(), &statp);
if (status == 0 && statp.st_size == 0) {
Dmsg3(100, "Unlink empty part in close call make_dvd_filename. part=%d num=%d vol=%s\n",
part_save, dev->num_dvd_parts, dev->getVolCatName());
Dmsg1(100, "unlink(%s)\n", archive_name.c_str());
unlink(archive_name.c_str());
if (part_save == dev->part) {
dev->set_part_spooled(false); /* no spooled part left */
}
} else if (status < 0) {
if (part_save == dev->part) {
dev->set_part_spooled(false); /* spool doesn't exit */
}
}
dev->part = part_save; /* restore part number */
}
}
/*
* Wait for a specific device to be released
* We wait a maximum of 1 minute then
* retry just in case a broadcast was lost.
*
* Returns: true if the device has changed state
* false if the total wait time has expired.
*/
bool wait_for_device(DCR *dcr, int &retries)
{
struct timeval tv;
struct timezone tz;
struct timespec timeout;
JCR *jcr = dcr->jcr;
DEVICE *dev = dcr->dev;
int stat = 0;
bool ok = true;
const int max_wait_time = 1 * 60; /* wait 1 minute */
char ed1[50];
Dmsg3(40, "Enter wait_for_device. busy=%d dcrvol=%s devvol=%s\n",
dev->is_busy(), dcr->VolumeName, dev->getVolCatName());
P(device_release_mutex);
if (++retries % 5 == 0) {
/* Print message every 5 minutes */
Jmsg(jcr, M_MOUNT, 0, _("JobId=%s, Job %s waiting device %s.\n"),
edit_uint64(jcr->JobId, ed1), jcr->Job, dcr->dev->print_name());
}
gettimeofday(&tv, &tz);
timeout.tv_nsec = tv.tv_usec * 1000;
timeout.tv_sec = tv.tv_sec + max_wait_time;
Dmsg0(dbglvl, "Going to wait for a device.\n");
/* Wait required time */
stat = pthread_cond_timedwait(&wait_device_release, &device_release_mutex, &timeout);
Dmsg1(dbglvl, "Wokeup from sleep on device stat=%d\n", stat);
V(device_release_mutex);
Dmsg1(dbglvl, "Return from wait_device ok=%d\n", ok);
return ok;
}
/*
* Open the first part file.
* - Close the fd
* - Reopen the device
*/
static bool dvd_open_first_part(DCR *dcr, int mode)
{
DEVICE *dev = dcr->dev;
Dmsg5(29, "Enter: ==== open_first_part dev=%s Vol=%s mode=%d num_dvd_parts=%d append=%d\n", dev->print_name(),
dev->getVolCatName(), dev->openmode, dev->num_dvd_parts, dev->can_append());
dev->close_part(dcr);
Dmsg2(400, "Call dev->open(vol=%s, mode=%d)\n", dcr->getVolCatName(),
mode);
Dmsg0(100, "Set part=1\n");
dev->part = 1;
dev->part_start = 0;
if (dev->open(dcr, mode) < 0) {
Dmsg0(400, "open dev() failed\n");
return false;
}
Dmsg2(400, "Leave open_first_part state=%s append=%d\n", dev->is_open()?"open":"not open", dev->can_append());
return true;
}
/*
* This job is done, so release the device. From a Unix standpoint,
* the device remains open.
*
* Note, if we were spooling, we may enter with the device blocked.
* We unblock at the end, only if it was us who blocked the
* device.
*
*/
bool release_device(DCR *dcr)
{
utime_t now;
JCR *jcr = dcr->jcr;
DEVICE *dev = dcr->dev;
bool ok = true;
char tbuf[100];
int was_blocked = BST_NOT_BLOCKED;
/*
* Capture job statistics now that we are done using this device.
*/
now = (utime_t)time(NULL);
update_job_statistics(jcr, now);
dev->Lock();
if (!dev->is_blocked()) {
block_device(dev, BST_RELEASING);
} else {
was_blocked = dev->blocked();
dev->set_blocked(BST_RELEASING);
}
lock_volumes();
Dmsg2(100, "release_device device %s is %s\n", dev->print_name(), dev->is_tape() ? "tape" : "disk");
/*
* If device is reserved, job never started, so release the reserve here
*/
dcr->clear_reserved();
if (dev->can_read()) {
VOLUME_CAT_INFO *vol = &dev->VolCatInfo;
dev->clear_read(); /* clear read bit */
Dmsg2(150, "dir_update_vol_info. label=%d Vol=%s\n",
dev->is_labeled(), vol->VolCatName);
if (dev->is_labeled() && vol->VolCatName[0] != 0) {
dcr->dir_update_volume_info(false, false); /* send Volume info to Director */
remove_read_volume(jcr, dcr->VolumeName);
volume_unused(dcr);
}
} else if (dev->num_writers > 0) {
/*
* Note if WEOT is set, we are at the end of the tape and may not be positioned correctly,
* so the job_media_record and update_vol_info have already been done,
* which means we skip them here.
*/
dev->num_writers--;
Dmsg1(100, "There are %d writers in release_device\n", dev->num_writers);
if (dev->is_labeled()) {
Dmsg2(200, "dir_create_jobmedia. Release vol=%s dev=%s\n",
dev->getVolCatName(), dev->print_name());
if (!dev->at_weot() && !dcr->dir_create_jobmedia_record(false)) {
Jmsg2(jcr, M_FATAL, 0, _("Could not create JobMedia record for Volume=\"%s\" Job=%s\n"),
dcr->getVolCatName(), jcr->Job);
}
/*
* If no more writers, and no errors, and wrote something, write an EOF
*/
if (!dev->num_writers && dev->can_write() && dev->block_num > 0) {
dev->weof(1);
write_ansi_ibm_labels(dcr, ANSI_EOF_LABEL, dev->VolHdr.VolumeName);
}
if (!dev->at_weot()) {
dev->VolCatInfo.VolCatFiles = dev->file; /* set number of files */
/*
* Note! do volume update before close, which zaps VolCatInfo
*/
dcr->dir_update_volume_info(false, false); /* send Volume info to Director */
Dmsg2(200, "dir_update_vol_info. Release vol=%s dev=%s\n",
dev->getVolCatName(), dev->print_name());
}
if (dev->num_writers == 0) { /* if not being used */
volume_unused(dcr); /* we obviously are not using the volume */
}
}
} else {
/*
* If we reach here, it is most likely because the job has failed,
* since the device is not in read mode and there are no writers.
* It was probably reserved.
*/
volume_unused(dcr);
}
Dmsg3(100, "%d writers, %d reserve, dev=%s\n", dev->num_writers, dev->num_reserved(), dev->print_name());
/*
* If no writers, close if file or !CAP_ALWAYS_OPEN
*/
if (dev->num_writers == 0 && (!dev->is_tape() || !dev->has_cap(CAP_ALWAYSOPEN))) {
dev->close(dcr);
free_volume(dev);
}
unlock_volumes();
/*
* Fire off Alert command and include any output
*/
if (!job_canceled(jcr)) {
if (!dcr->device->drive_tapealert_enabled && dcr->device->alert_command) {
int status = 1;
POOLMEM *alert, *line;
BPIPE *bpipe;
alert = get_pool_memory(PM_FNAME);
line = get_pool_memory(PM_FNAME);
alert = edit_device_codes(dcr, alert, dcr->device->alert_command, "");
/*
* Wait maximum 5 minutes
*/
bpipe = open_bpipe(alert, 60 * 5, "r");
if (bpipe) {
while (bfgets(line, bpipe->rfd)) {
Jmsg(jcr, M_ALERT, 0, _("Alert: %s"), line);
}
status = close_bpipe(bpipe);
} else {
status = errno;
}
if (status != 0) {
berrno be;
Jmsg(jcr, M_ALERT, 0, _("3997 Bad alert command: %s: ERR=%s.\n"), alert, be.bstrerror(status));
}
Dmsg1(400, "alert status=%d\n", status);
free_pool_memory(alert);
free_pool_memory(line);
} else {
/*
* If all reservations are cleared for this device raise an event that SD plugins can register to.
*/
if (dev->num_reserved() == 0) {
generate_plugin_event(jcr, bsdEventDeviceReleased, dcr);
}
}
}
pthread_cond_broadcast(&dev->wait_next_vol);
Dmsg2(100, "JobId=%u broadcast wait_device_release at %s\n",
(uint32_t)jcr->JobId, bstrftimes(tbuf, sizeof(tbuf), (utime_t)time(NULL)));
release_device_cond();
/*
* If we are the thread that blocked the device, then unblock it
*/
if (pthread_equal(dev->no_wait_id, pthread_self())) {
dev->dunblock(true);
} else {
/*
* Otherwise, reset the prior block status and unlock
*/
dev->set_blocked(was_blocked);
dev->Unlock();
}
if (dcr->keep_dcr) {
detach_dcr_from_dev(dcr);
} else {
free_dcr(dcr);
}
Dmsg2(100, "Device %s released by JobId=%u\n", dev->print_name(), (uint32_t)jcr->JobId);
return ok;
}
/*
* Checks if we can write on a non-blank DVD: meaning that it just have been
* truncated (there is only one zero-sized file on the DVD).
*
* Note! Normally if we can mount the device, which should be the case
* when we get here, it is not a blank DVD. Hence we check if
* if all files are of zero length (i.e. no data), in which case we allow it.
*
*/
bool check_can_write_on_non_blank_dvd(DCR *dcr)
{
DEVICE* dev = dcr->dev;
DIR* dp;
struct dirent *entry, *result;
int name_max;
struct stat filestat;
bool ok = true;
name_max = pathconf(".", _PC_NAME_MAX);
if (name_max < 1024) {
name_max = 1024;
}
if (!(dp = opendir(dev->device->mount_point))) {
berrno be;
dev->dev_errno = errno;
Dmsg3(29, "check_can_write_on_non_blank_dvd: failed to open dir %s (dev=%s), ERR=%s\n",
dev->device->mount_point, dev->print_name(), be.bstrerror());
return false;
}
entry = (struct dirent *)malloc(sizeof(struct dirent) + name_max + 1000);
for ( ;; ) {
if ((readdir_r(dp, entry, &result) != 0) || (result == NULL)) {
dev->dev_errno = EIO;
Dmsg2(129, "check_can_write_on_non_blank_dvd: no more files in dir %s (dev=%s)\n",
dev->device->mount_point, dev->print_name());
break;
} else {
Dmsg2(99, "check_can_write_on_non_blank_dvd: found %s (versus %s)\n",
result->d_name, dev->getVolCatName());
if (strcmp(result->d_name, ".") && strcmp(result->d_name, "..") &&
strcmp(result->d_name, ".keep")) {
/* Found a file, checking it is empty */
POOL_MEM filename(PM_FNAME);
pm_strcpy(filename, dev->device->mount_point);
if (!IsPathSeparator(filename.c_str()[strlen(filename.c_str())-1])) {
pm_strcat(filename, "/");
}
pm_strcat(filename, result->d_name);
if (stat(filename.c_str(), &filestat) < 0) {
berrno be;
dev->dev_errno = errno;
Dmsg2(29, "check_can_write_on_non_blank_dvd: cannot stat file (file=%s), ERR=%s\n",
filename.c_str(), be.bstrerror());
ok = false;
break;
}
Dmsg2(99, "check_can_write_on_non_blank_dvd: size of %s is %lld\n",
filename.c_str(), filestat.st_size);
if (filestat.st_size != 0) {
ok = false;
break;
}
}
}
}
free(entry);
closedir(dp);
Dmsg1(29, "OK can_write_on_non_blank_dvd: OK=%d\n", ok);
return ok;
}
/*
* Open the next part file.
* - Close the fd
* - Increment part number
* - Reopen the device
*/
int dvd_open_next_part(DCR *dcr)
{
DEVICE *dev = dcr->dev;
Dmsg6(29, "Enter: == open_next_part part=%d npart=%d dev=%s vol=%s mode=%d file_addr=%d\n",
dev->part, dev->num_dvd_parts, dev->print_name(),
dev->getVolCatName(), dev->openmode, dev->file_addr);
if (!dev->is_dvd()) {
Dmsg1(100, "Device %s is not dvd!!!!\n", dev->print_name());
return -1;
}
/* When appending, do not open a new part if the current is empty */
if (dev->can_append() && (dev->part > dev->num_dvd_parts) &&
(dev->part_size == 0)) {
Dmsg0(29, "open_next_part exited immediately (dev->part_size == 0).\n");
return dev->fd();
}
dev->close_part(dcr); /* close current part */
/*
* If we have a spooled part open, write it to the
* DVD before opening the next part.
*/
if (dev->is_part_spooled()) {
Dmsg2(100, "Before open next write previous. part=%d num_parts=%d\n",
dev->part, dev->num_dvd_parts);
if (!dvd_write_part(dcr)) {
Dmsg0(29, "Error in dvd_write part.\n");
return -1;
}
}
dev->part_start += dev->part_size;
dev->part++;
Dmsg2(29, "Inc part=%d num_dvd_parts=%d\n", dev->part, dev->num_dvd_parts);
/* Are we working on a part past what is written in the DVD? */
if (dev->num_dvd_parts < dev->part) {
POOL_MEM archive_name(PM_FNAME);
struct stat buf;
/*
* First check what is on DVD. If our part is there, we
* are in trouble, so bail out.
* NB: This is however not a problem if we are writing the first part.
* It simply means that we are over writing an existing volume...
*/
if (dev->num_dvd_parts > 0) {
make_mounted_dvd_filename(dev, archive_name); /* makes dvd name */
Dmsg1(100, "Check if part on DVD: %s\n", archive_name.c_str());
if (stat(archive_name.c_str(), &buf) == 0) {
/* bad news bail out */
dev->set_part_spooled(false);
Mmsg1(&dev->errmsg, _("Next Volume part already exists on DVD. Cannot continue: %s\n"),
archive_name.c_str());
return -1;
}
}
#ifdef neeeded
Dmsg2(400, "num_dvd_parts=%d part=%d\n", dev->num_dvd_parts, dev->part);
make_spooled_dvd_filename(dev, archive_name); /* makes spool name */
/* Check if the next part exists in spool directory . */
Dmsg1(100, "Check if part on spool: %s\n", archive_name.c_str());
if ((stat(archive_name.c_str(), &buf) == 0) || (errno != ENOENT)) {
Dmsg1(29, "======= Part %s is in the way, deleting it...\n", archive_name.c_str());
/* Then try to unlink it */
if (unlink(archive_name.c_str()) < 0) {
berrno be;
dev->set_part_spooled(false);
dev->dev_errno = errno;
Mmsg2(dev->errmsg, _("open_next_part can't unlink existing part %s, ERR=%s\n"),
archive_name.c_str(), be.bstrerror());
return -1;
}
}
#endif
}
Dmsg2(400, "Call dev->open(vol=%s, mode=%d)\n", dcr->getVolCatName(),
dev->openmode);
/* Open next part. Note, this sets part_size for part opened. */
if (dev->open(dcr, OPEN_READ_ONLY) < 0) {
return -1;
}
dev->set_labeled(); /* all next parts are "labeled" */
return dev->fd();
}