/*
* 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;
}
void set_os_device_parameters(DCR *dcr)
{
DEVICE *dev = dcr->dev;
if (strcmp(dev->dev_name, "/dev/null") == 0) {
return; /* no use trying to set /dev/null */
}
#if defined(HAVE_LINUX_OS) || defined(HAVE_WIN32)
struct mtop mt_com;
Dmsg0(100, "In set_os_device_parameters\n");
#if defined(MTSETBLK)
if (dev->min_block_size == dev->max_block_size &&
dev->min_block_size == 0) { /* variable block mode */
mt_com.mt_op = MTSETBLK;
mt_com.mt_count = 0;
Dmsg0(100, "Set block size to zero\n");
if (dev->d_ioctl(dev->fd(), MTIOCTOP, (char *)&mt_com) < 0) {
dev->clrerror(MTSETBLK);
}
}
#endif
#if defined(MTSETDRVBUFFER)
if (getuid() == 0) { /* Only root can do this */
mt_com.mt_op = MTSETDRVBUFFER;
mt_com.mt_count = MT_ST_CLEARBOOLEANS;
if (!dev->has_cap(CAP_TWOEOF)) {
mt_com.mt_count |= MT_ST_TWO_FM;
}
if (dev->has_cap(CAP_EOM)) {
mt_com.mt_count |= MT_ST_FAST_MTEOM;
}
Dmsg0(100, "MTSETDRVBUFFER\n");
if (dev->d_ioctl(dev->fd(), MTIOCTOP, (char *)&mt_com) < 0) {
dev->clrerror(MTSETDRVBUFFER);
}
}
#endif
return;
#endif
#ifdef HAVE_NETBSD_OS
struct mtop mt_com;
if (dev->min_block_size == dev->max_block_size &&
dev->min_block_size == 0) { /* variable block mode */
mt_com.mt_op = MTSETBSIZ;
mt_com.mt_count = 0;
if (dev->d_ioctl(dev->fd(), MTIOCTOP, (char *)&mt_com) < 0) {
dev->clrerror(MTSETBSIZ);
}
/* Get notified at logical end of tape */
mt_com.mt_op = MTEWARN;
mt_com.mt_count = 1;
if (dev->d_ioctl(dev->fd(), MTIOCTOP, (char *)&mt_com) < 0) {
dev->clrerror(MTEWARN);
}
}
return;
#endif
#if HAVE_FREEBSD_OS || HAVE_OPENBSD_OS
struct mtop mt_com;
if (dev->min_block_size == dev->max_block_size &&
dev->min_block_size == 0) { /* variable block mode */
mt_com.mt_op = MTSETBSIZ;
mt_com.mt_count = 0;
if (dev->d_ioctl(dev->fd(), MTIOCTOP, (char *)&mt_com) < 0) {
dev->clrerror(MTSETBSIZ);
}
}
#if defined(MTIOCSETEOTMODEL)
uint32_t neof;
if (dev->has_cap(CAP_TWOEOF)) {
neof = 2;
} else {
neof = 1;
}
if (dev->d_ioctl(dev->fd(), MTIOCSETEOTMODEL, (caddr_t)&neof) < 0) {
berrno be;
dev->dev_errno = errno; /* save errno */
Mmsg2(dev->errmsg, _("Unable to set eotmodel on device %s: ERR=%s\n"),
dev->print_name(), be.bstrerror(dev->dev_errno));
Jmsg(dcr->jcr, M_FATAL, 0, dev->errmsg);
}
#endif
return;
#endif
#ifdef HAVE_SUN_OS
struct mtop mt_com;
if (dev->min_block_size == dev->max_block_size &&
dev->min_block_size == 0) { /* variable block mode */
mt_com.mt_op = MTSRSZ;
mt_com.mt_count = 0;
if (dev->d_ioctl(dev->fd(), MTIOCTOP, (char *)&mt_com) < 0) {
dev->clrerror(MTSRSZ);
}
}
return;
#endif
}