* Version $Id$
*/
/*
- Copyright (C) 2000-2005 Kern Sibbald
+ Copyright (C) 2000-2006 Kern Sibbald
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
init_dev(JCR *jcr, DEVRES *device)
{
struct stat statp;
- bool tape, fifo;
int errstat;
DCR *dcr = NULL;
DEVICE *dev;
- /* Check that device is available */
- if (stat(device->device_name, &statp) < 0) {
- berrno be;
- Jmsg2(jcr, M_ERROR, 0, _("Unable to stat device %s: ERR=%s\n"),
- device->device_name, be.strerror());
- return NULL;
- }
-
-
- tape = false;
- fifo = false;
- if (S_ISDIR(statp.st_mode)) {
- tape = false;
- } else if (S_ISCHR(statp.st_mode)) {
- tape = true;
- } else if (S_ISFIFO(statp.st_mode)) {
- fifo = true;
- } else if (!(device->cap_bits & CAP_REQMOUNT)) {
- Jmsg2(jcr, M_ERROR, 0, _("%s is an unknown device type. Must be tape or directory\n"
- " or have RequiresMount=yes for DVD. st_mode=%x\n"),
- device->device_name, statp.st_mode);
- return NULL;
+
+ /* If no device type specified, try to guess */
+ if (!device->dev_type) {
+ /* Check that device is available */
+ if (stat(device->device_name, &statp) < 0) {
+ berrno be;
+ Jmsg2(jcr, M_ERROR, 0, _("Unable to stat device %s: ERR=%s\n"),
+ device->device_name, be.strerror());
+ return NULL;
+ }
+ if (S_ISDIR(statp.st_mode)) {
+ device->dev_type = B_FILE_DEV;
+ } else if (S_ISCHR(statp.st_mode)) {
+ device->dev_type = B_TAPE_DEV;
+ } else if (S_ISFIFO(statp.st_mode)) {
+ device->dev_type = B_FILE_DEV;
+ } else if (!(device->cap_bits & CAP_REQMOUNT)) {
+ Jmsg2(jcr, M_ERROR, 0, _("%s is an unknown device type. Must be tape or directory\n"
+ " or have RequiresMount=yes for DVD. st_mode=%x\n"),
+ device->device_name, statp.st_mode);
+ return NULL;
+ } else {
+ device->dev_type = B_DVD_DEV;
+ }
}
dev = (DEVICE *)get_memory(sizeof(DEVICE));
dev->max_spool_size = device->max_spool_size;
dev->drive_index = device->drive_index;
dev->autoselect = device->autoselect;
- if (tape) { /* No parts on tapes */
- dev->max_part_size = 0;
- }
- else {
+ dev->dev_type = device->dev_type;
+ if (dev->is_tape()) { /* No parts on tapes */
+ dev->max_part_size = 0;
+ } else {
dev->max_part_size = device->max_part_size;
}
/* Sanity check */
}
dev->device = device;
- if (tape) {
- dev->state |= ST_TAPE;
- } else if (fifo) {
- dev->state |= ST_FIFO;
+ if (dev->is_fifo()) {
dev->capabilities |= CAP_STREAM; /* set stream device */
- } else {
- dev->state |= ST_FILE;
}
/* If the device requires mount :
* - Check that the mount point is available
* - Check that (un)mount commands are defined
*/
- if (dev->is_file() && dev->requires_mount()) {
- if (stat(device->mount_point, &statp) < 0) {
+ if ((dev->is_file() || dev->is_dvd()) && dev->requires_mount()) {
+ if (!device->mount_point || stat(device->mount_point, &statp) < 0) {
berrno be;
dev->dev_errno = errno;
Jmsg2(jcr, M_ERROR, 0, _("Unable to stat mount point %s: ERR=%s\n"),
device->mount_point, be.strerror());
return NULL;
}
+ }
+ if (dev->is_dvd()) {
if (!device->mount_command || !device->unmount_command) {
Jmsg0(jcr, M_ERROR_TERM, 0, _("Mount and unmount commands must defined for a device which requires mount.\n"));
}
if (!device->write_part_command) {
Jmsg0(jcr, M_ERROR_TERM, 0, _("Write part command must be defined for a device which requires mount.\n"));
}
- dev->state |= ST_DVD;
}
if (dev->max_block_size > 1000000) {
Jmsg0(jcr, M_ERROR_TERM, 0, dev->errmsg);
}
- dev->fd = -1;
+ dev->clear_opened();
dev->attached_dcrs = New(dlist(dcr, &dcr->dev_link));
Dmsg2(29, "init_dev: tape=%d dev_name=%s\n", dev->is_tape(), dev->dev_name);
int
DEVICE::open(DCR *dcr, int omode)
{
+ int preserve = 0;
if (is_open()) {
if (openmode == omode) {
return fd;
} else {
::close(fd); /* use system close so correct mode will be used on open */
- fd = -1;
+ clear_opened();
Dmsg0(100, "Close fd for mode change.\n");
+ preserve = state & (ST_LABEL|ST_APPEND|ST_READ);
}
}
if (dcr) {
Dmsg1(100, "call open_file_device mode=%s\n", mode_to_str(omode));
open_file_device(omode);
}
+ state |= preserve; /* reset any important state info */
return fd;
}
}
/*
- * If the flage open_nowait is set, which is the case
- * when the daemon is initially trying to open the device,
- * we open it with O_NONBLOCK set and O_RONLY, which will
- * allow us to open normal Linux tape drives with no tape
- * in the drive without blocking. We then immediately
- * set blocking status so that if we read from the device they
- * will be normal blocking reads.
- *
- * If later, we want to write on the device, it will be freed and
- * reopened, but hopefully there will be a tape in the drive so
- * we will not block.
*/
void DEVICE::open_tape_device(DCR *dcr, int omode)
{
- int nonblocking = 0;
file_size = 0;
int timeout;
- int ioerrcnt = 10;
+ int nonblocking = O_NONBLOCK;
Dmsg0(29, "open dev: device is tape\n");
- if (is_tape() && is_autochanger()) {
+ if (is_autochanger()) {
get_autochanger_loaded_slot(dcr);
}
set_mode(omode);
timeout = max_open_wait;
errno = 0;
-#ifdef HAVE_LINUX_OS
- if (open_nowait) {
- /* Set wait counters to zero for no wait */
- timeout = ioerrcnt = 0;
- /* Open drive in non-block mode */
- nonblocking = O_NONBLOCK;
- }
-#endif
if (is_fifo() && timeout) {
/* Set open timer */
tid = start_thread_timer(pthread_self(), timeout);
Dmsg3(100, "Try open %s mode=%s nonblocking=%d\n", print_name(),
mode_to_str(omode), nonblocking);
/* Use system open() */
- while ((fd = ::open(dev_name, mode+nonblocking, MODE_RW)) < 0) {
+ while ((fd = ::open(dev_name, mode+nonblocking)) < 0) {
berrno be;
- Dmsg2(100, "Open error errno=%d ERR=%s\n", errno, be.strerror());
- if (errno == EINTR || errno == EAGAIN) {
+ dev_errno = errno;
+ Dmsg5(050, "Open omode=%d mode=%x nonblock=%d error errno=%d ERR=%s\n",
+ omode, mode, nonblocking, errno, be.strerror());
+ if (dev_errno == EINTR || dev_errno == EAGAIN) {
Dmsg0(100, "Continue open\n");
continue;
}
/* Busy wait for specified time (default = 5 mins) */
- if (errno == EBUSY && timeout-- > 0) {
+ if (dev_errno == EBUSY && timeout-- > 0) {
Dmsg2(100, "Device %s busy. ERR=%s\n", print_name(), be.strerror());
bmicrosleep(1, 0);
continue;
}
- /* IO error (no volume) try 10 times every 6 seconds */
- if (errno == EIO && ioerrcnt-- > 0) {
- bmicrosleep(5, 0);
- Dmsg0(100, "Continue open\n");
- continue;
- }
- dev_errno = errno;
Mmsg2(errmsg, _("Unable to open device %s: ERR=%s\n"),
print_name(), be.strerror(dev_errno));
/* Stop any open timer we set */
break;
}
- if (nonblocking) {
- set_blocking();
- }
-
if (fd >= 0) {
openmode = omode; /* save open mode */
+ set_blocking();
Dmsg2(100, "openmode=%d %s\n", openmode, mode_to_str(openmode));
dev_errno = 0;
- set_opened();
- use_count = 1;
update_pos_dev(this); /* update position */
set_os_device_parameters(this); /* do system dependent stuff */
+ } else {
+ clear_opened();
}
/* Stop any open() timer we started */
{
int oflags;
/* Try to reset blocking */
+#ifdef xxx
if ((oflags = fcntl(fd, F_GETFL, 0)) < 0 ||
fcntl(fd, F_SETFL, oflags & ~O_NONBLOCK) < 0) {
berrno be;
::close(fd); /* use system close() */
- fd = ::open(dev_name, mode, MODE_RW);
+ fd = ::open(dev_name, mode);
Dmsg2(100, "fcntl error. ERR=%s. Close-reopen fd=%d\n", be.strerror(), fd);
}
+#endif
+ oflags = fcntl(fd, F_GETFL, 0);
+ if (oflags > 0 && (oflags & O_NONBLOCK)) {
+ fcntl(fd, F_SETFL, oflags & ~O_NONBLOCK);
+ }
}
/*
/*
* Handle opening of File Archive (not a tape)
*/
- Dmsg3(29, "Enter: open_file_dev: %s dev=%s mode=%s\n", is_dvd()?"DVD":"disk",
- archive_name.c_str(), mode_to_str(omode));
-
- if (VolCatInfo.VolCatName[0] == 0) {
- Mmsg(errmsg, _("Could not open file device %s. No Volume name given.\n"),
- print_name());
- fd = -1;
- return;
- }
pm_strcpy(archive_name, dev_name);
- if (archive_name.c_str()[strlen(archive_name.c_str())-1] != '/') {
- pm_strcat(archive_name, "/");
+ /*
+ * If this is a virtual autochanger (i.e. changer_res != NULL)
+ * we simply use the deviced name, assuming it has been
+ * appropriately setup by the "autochanger".
+ */
+ if (!device->changer_res) {
+ if (VolCatInfo.VolCatName[0] == 0) {
+ Mmsg(errmsg, _("Could not open file device %s. No Volume name given.\n"),
+ print_name());
+ clear_opened();
+ return;
+ }
+
+ if (archive_name.c_str()[strlen(archive_name.c_str())-1] != '/') {
+ pm_strcat(archive_name, "/");
+ }
+ pm_strcat(archive_name, VolCatInfo.VolCatName);
}
- pm_strcat(archive_name, VolCatInfo.VolCatName);
+
Dmsg3(29, "open dev: %s dev=%s mode=%s\n", is_dvd()?"DVD":"disk",
archive_name.c_str(), mode_to_str(omode));
Emsg0(M_FATAL, 0, errmsg);
} else {
dev_errno = 0;
- set_opened();
- use_count = 1;
update_pos_dev(this); /* update position */
}
Dmsg5(29, "open dev: %s fd=%d opened, part=%d/%d, part_size=%u\n",
print_name());
Mmsg(errmsg, _("Could not open file device %s. No Volume name given.\n"),
print_name());
- fd = -1;
+ clear_opened();
return;
}
if (!check_can_write_on_non_blank_dvd(dcr)) {
Mmsg(errmsg, _("The media in the device %s is not empty, please blank it before writing anything to it.\n"), print_name());
Emsg0(M_FATAL, 0, errmsg);
- fd = -1;
+ unmount_dev(this, 1); /* Unmount the device, so the operator can change it. */
+ clear_opened();
return;
}
}
else {
Mmsg(errmsg, _("There is no valid media in the device %s.\n"), print_name());
Emsg0(M_FATAL, 0, errmsg);
- fd = -1;
+ clear_opened();
return;
}
}
else {
Mmsg(errmsg, _("Could not mount device %s.\n"), print_name());
Emsg0(M_FATAL, 0, errmsg);
- fd = -1;
+ clear_opened();
return;
}
}
Dmsg1(29, "open failed: %s", errmsg);
/* Use system close() */
::close(fd);
- fd = -1;
+ clear_opened();
} else {
part_size = filestat.st_size;
dev_errno = 0;
- set_opened();
- use_count = 1;
update_pos_dev(this); /* update position */
/* NB: It seems this code is wrong... part number is incremented in open_next_part, not here */
}
-#ifdef debug_tracing
-#undef rewind_dev
-bool _rewind_dev(char *file, int line, DEVICE *dev)
-{
- Dmsg3(100, "rewind_dev fd=%d called from %s:%d\n", dev->fd, file, line);
- return rewind_dev(dev);
-}
-#endif
-
/*
* Rewind the device.
* Returns: true on success
* false on failure
*/
-bool rewind_dev(DEVICE *dev)
+bool DEVICE::rewind(DCR *dcr)
{
struct mtop mt_com;
unsigned int i;
+ bool first = true;
- Dmsg2(29, "rewind_dev fd=%d %s\n", dev->fd, dev->print_name());
- if (dev->fd < 0) {
- if (!dev->is_dvd()) { /* In case of major error, the fd is not open on DVD, so we don't want to abort. */
- dev->dev_errno = EBADF;
- Mmsg1(dev->errmsg, _("Bad call to rewind_dev. Device %s not open\n"),
- dev->print_name());
- Emsg0(M_ABORT, 0, dev->errmsg);
+ Dmsg3(29, "rewind res=%d fd=%d %s\n", reserved_device, fd, print_name());
+ if (fd < 0) {
+ if (!is_dvd()) { /* In case of major error, the fd is not open on DVD, so we don't want to abort. */
+ dev_errno = EBADF;
+ Mmsg1(errmsg, _("Bad call to rewind. Device %s not open\n"),
+ print_name());
+ Emsg0(M_ABORT, 0, errmsg);
}
return false;
}
- dev->state &= ~(ST_EOT|ST_EOF|ST_WEOT); /* remove EOF/EOT flags */
- dev->block_num = dev->file = 0;
- dev->file_size = 0;
- dev->file_addr = 0;
- if (dev->is_tape()) {
+ state &= ~(ST_EOT|ST_EOF|ST_WEOT); /* remove EOF/EOT flags */
+ block_num = file = 0;
+ file_size = 0;
+ file_addr = 0;
+ if (is_tape()) {
mt_com.mt_op = MTREW;
mt_com.mt_count = 1;
/* If we get an I/O error on rewind, it is probably because
* the drive is actually busy. We loop for (about 5 minutes)
* retrying every 5 seconds.
*/
- for (i=dev->max_rewind_wait; ; i -= 5) {
- if (ioctl(dev->fd, MTIOCTOP, (char *)&mt_com) < 0) {
+ for (i=max_rewind_wait; ; i -= 5) {
+ if (ioctl(fd, MTIOCTOP, (char *)&mt_com) < 0) {
berrno be;
- clrerror_dev(dev, MTREW);
- if (i == dev->max_rewind_wait) {
+ clrerror_dev(this, MTREW);
+ if (i == max_rewind_wait) {
Dmsg1(200, "Rewind error, %s. retrying ...\n", be.strerror());
}
- if (dev->dev_errno == EIO && i > 0) {
+ /*
+ * This is a gross hack, because if the user has the
+ * device mounted (i.e. open), then uses mtx to load
+ * a tape, the current open file descriptor is invalid.
+ * So, we close the drive and re-open it.
+ */
+ if (first && dcr) {
+ int open_mode = openmode;
+ ::close(fd);
+ clear_opened();
+ open(dcr, open_mode);
+ if (fd < 0) {
+ return false;
+ }
+ first = false;
+ continue;
+ }
+ if (dev_errno == EIO && i > 0) {
Dmsg0(200, "Sleeping 5 seconds.\n");
bmicrosleep(5, 0);
continue;
}
- Mmsg2(dev->errmsg, _("Rewind error on %s. ERR=%s.\n"),
- dev->print_name(), be.strerror());
+ Mmsg2(errmsg, _("Rewind error on %s. ERR=%s.\n"),
+ print_name(), be.strerror());
return false;
}
break;
}
- } else if (dev->is_file()) {
- if (lseek_dev(dev, (off_t)0, SEEK_SET) < 0) {
+ } else if (is_file()) {
+ if (lseek_dev(this, (off_t)0, SEEK_SET) < 0) {
berrno be;
- dev->dev_errno = errno;
- Mmsg2(dev->errmsg, _("lseek_dev error on %s. ERR=%s.\n"),
- dev->print_name(), be.strerror());
+ dev_errno = errno;
+ Mmsg2(errmsg, _("lseek_dev error on %s. ERR=%s.\n"),
+ print_name(), be.strerror());
return false;
}
}
void DEVICE::set_ateof()
{
set_eof();
- file++;
+ if (is_tape()) {
+ file++;
+ }
file_addr = 0;
file_size = 0;
block_num = 0;
dev->block_num = dev->file = 0;
dev->file_size = 0;
dev->file_addr = 0;
- if (dev->state & (ST_FIFO | ST_PROG)) {
+ if (dev->is_fifo() || dev->is_prog()) {
return true;
}
if (!dev->is_tape()) {
Dmsg0(100,"Using FAST FSF for EOM\n");
/* If unknown position, rewind */
if (!dev_get_os_pos(dev, &mt_stat)) {
- if (!rewind_dev(dev)) {
+ if (!dev->rewind(NULL)) {
return false;
}
}
/*
* Rewind then use FSF until EOT reached
*/
- if (!rewind_dev(dev)) {
+ if (!dev->rewind(NULL)) {
return false;
}
/*
* done, all future references to the drive get and I/O error.
*/
clrerror_dev(dev, MTREW);
- return rewind_dev(dev);
+ return dev->rewind(NULL);
}
}
Dmsg4(100, "reposition_dev from %u:%u to %u:%u\n",
dev->file, dev->block_num, file, block);
if (file < dev->file) {
- Dmsg0(100, "Rewind_dev\n");
- if (!rewind_dev(dev)) {
+ Dmsg0(100, "Rewind\n");
+ if (!dev->rewind(NULL)) {
return false;
}
}
static void do_close(DEVICE *dev)
{
- Dmsg1(29, "really close_dev %s\n", dev->print_name());
+ Dmsg1(100, "really close_dev %s\n", dev->print_name());
if (dev->fd >= 0) {
- close(dev->fd);
+ ::close(dev->fd);
}
if (!unmount_dev(dev, 1)) {
}
/* Clean up device packet so it can be reused */
- dev->fd = -1;
- dev->state &= ~(ST_OPENED|ST_LABEL|ST_READ|ST_APPEND|ST_EOT|ST_WEOT|ST_EOF);
+ dev->clear_opened();
+ dev->state &= ~(ST_LABEL|ST_READ|ST_APPEND|ST_EOT|ST_WEOT|ST_EOF);
dev->label_type = B_BACULA_LABEL;
dev->file = dev->block_num = 0;
dev->file_size = 0;
dev->part_size = 0;
dev->part_start = 0;
dev->EndFile = dev->EndBlock = 0;
- memset(&dev->VolCatInfo, 0, sizeof(dev->VolCatInfo));
free_volume(dev);
+ memset(&dev->VolCatInfo, 0, sizeof(dev->VolCatInfo));
memset(&dev->VolHdr, 0, sizeof(dev->VolHdr));
if (dev->tid) {
stop_thread_timer(dev->tid);
dev->tid = 0;
}
- dev->use_count = 0;
dev->openmode = 0;
}
*/
void DEVICE::close()
{
- /*if (fd >= 0 && use_count == 1) {*/
- /* No need to check if fd >= 0: it is checked again
- * in do_close, and do_close MUST be called for volumes
- * splitted in parts, even if fd == -1. */
- if (use_count == 1) {
- do_close(this);
- } else if (use_count > 0) {
- use_count--;
- }
-
-#ifdef FULL_DEBUG
- ASSERT(use_count >= 0);
-#endif
+ do_close(this);
}
projects / bacula / bacula / blobdiff