* Version $Id$
*/
/*
- Copyright (C) 2005 Kern Sibbald
+ Copyright (C) 2005-2006 Kern Sibbald
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
#include "stored.h"
/* Forward referenced functions */
-static void edit_device_codes_dev(DEVICE *dev, POOL_MEM &omsg, const char *imsg);
-static bool do_mount_dev(DEVICE* dev, int mount, int dotimeout);
+static bool do_mount_dvd(DEVICE* dev, int mount, int dotimeout);
static void add_file_and_part_name(DEVICE *dev, POOL_MEM &archive_name);
/*
bsnprintf(partnumber, sizeof(partnumber), "%d", dev->part);
pm_strcat(archive_name, partnumber);
}
- Dmsg1(100, "Exit make_dvd_filename: arch=%s\n", archive_name.c_str());
+ Dmsg1(400, "Exit make_dvd_filename: arch=%s\n", archive_name.c_str());
}
/* Mount the device.
* If timeout, wait until the mount command returns 0.
* If !timeout, try to mount the device only once.
*/
-bool mount_dev(DEVICE* dev, int timeout)
+bool mount_dvd(DEVICE* dev, int timeout)
{
- Dmsg0(90, "Enter mount_dev\n");
+ Dmsg0(90, "Enter mount_dvd\n");
if (dev->is_mounted()) {
return true;
} else if (dev->requires_mount()) {
- return do_mount_dev(dev, 1, timeout);
+ return do_mount_dvd(dev, 1, timeout);
}
return true;
}
* If timeout, wait until the unmount command returns 0.
* If !timeout, try to unmount the device only once.
*/
-bool unmount_dev(DEVICE *dev, int timeout)
+bool unmount_dvd(DEVICE *dev, int timeout)
{
- Dmsg0(90, "Enter unmount_dev\n");
+ if (!dev->is_dvd()) {
+ return true;
+ }
+ Dmsg0(90, "Enter unmount_dvd\n");
if (dev->is_mounted()) {
- return do_mount_dev(dev, 0, timeout);
+ return do_mount_dvd(dev, 0, timeout);
}
return true;
}
/* (Un)mount the device */
-static bool do_mount_dev(DEVICE* dev, int mount, int dotimeout)
+static bool do_mount_dvd(DEVICE* dev, int mount, int dotimeout)
{
POOL_MEM ocmd(PM_FNAME);
POOLMEM *results;
icmd = dev->device->unmount_command;
}
- edit_device_codes_dev(dev, ocmd, icmd);
+ dev->edit_mount_codes(ocmd, icmd);
- Dmsg2(200, "do_mount_dev: cmd=%s mounted=%d\n", ocmd.c_str(), !!dev->is_mounted());
+ Dmsg2(200, "do_mount_dvd: cmd=%s mounted=%d\n", ocmd.c_str(), !!dev->is_mounted());
if (dotimeout) {
/* Try at most 1 time to (un)mount the device. This should perhaps be configurable. */
/* If busy retry each second */
while ((status = run_program_full_output(ocmd.c_str(),
dev->max_open_wait/2, results)) != 0) {
+ /* Doesn't work with internationalisation (This is not a problem) */
if (fnmatch("*is already mounted on", results, 0) == 0) {
break;
}
* Try to unmount it, then remount it */
if (mount) {
Dmsg1(400, "Trying to unmount the device %s...\n", dev->print_name());
- do_mount_dev(dev, 0, 0);
+ do_mount_dvd(dev, 0, 0);
}
bmicrosleep(1, 0);
continue;
}
Dmsg2(40, "Device %s cannot be mounted. ERR=%s\n", dev->print_name(), results);
- Mmsg(dev->errmsg, "Device %s cannot be mounted. ERR=%s\n",
+ Mmsg(dev->errmsg, _("Device %s cannot be mounted. ERR=%s\n"),
dev->print_name(), results);
/*
* Now, just to be sure it is not mounted, try to read the
DIR* dp;
struct dirent *entry, *result;
int name_max;
- int count = 0;
+ int count;
name_max = pathconf(".", _PC_NAME_MAX);
if (name_max < 1024) {
if (!(dp = opendir(dev->device->mount_point))) {
berrno be;
dev->dev_errno = errno;
- Dmsg3(29, "open_mounted_dev: failed to open dir %s (dev=%s), ERR=%s\n",
+ Dmsg3(29, "do_mount_dvd: failed to open dir %s (dev=%s), ERR=%s\n",
dev->device->mount_point, dev->print_name(), be.strerror());
goto get_out;
}
entry = (struct dirent *)malloc(sizeof(struct dirent) + name_max + 1000);
+ count = 0;
while (1) {
if ((readdir_r(dp, entry, &result) != 0) || (result == NULL)) {
- dev->dev_errno = ENOENT;
- Dmsg2(29, "open_mounted_dev: failed to find suitable file in dir %s (dev=%s)\n",
+ dev->dev_errno = EIO;
+ Dmsg2(129, "do_mount_dvd: failed to find suitable file in dir %s (dev=%s)\n",
dev->device->mount_point, dev->print_name());
break;
}
- count++;
+ if (strcmp(result->d_name, ".") && strcmp(result->d_name, "..") &&
+ strcmp(result->d_name, ".keep")) {
+ count++; /* result->d_name != ., .. or .keep (Gentoo-specific) */
+ break;
+ }
+ else {
+ Dmsg2(129, "do_mount_dvd: ignoring %s in %s\n",
+ result->d_name, dev->device->mount_point);
+ }
}
free(entry);
closedir(dp);
- if (count > 2) {
- mount = 1; /* If we got more than . and .. */
+
+ Dmsg1(29, "do_mount_dvd: got %d files in the mount point (not counting ., .. and .keep)\n", count);
+
+ if (count > 0) {
+ mount = 1; /* If we got more than ., .. and .keep */
break; /* there must be something mounted */
}
get_out:
dev->set_mounted(mount); /* set/clear mounted flag */
free_pool_memory(results);
- /* Do not check free space when unmounting (otherwise it will mount it again) */
+ /* Do not check free space when unmounting */
if (mount) {
update_free_space_dev(dev);
}
char ed1[50];
/* The device must be mounted in order to dvd-freespace to work */
- mount_dev(dev, 1);
+ mount_dvd(dev, 1);
sm_check(__FILE__, __LINE__, false);
icmd = dev->device->free_space_command;
if (!icmd) {
dev->free_space = 0;
dev->free_space_errno = 0;
+ dev->clear_freespace_ok(); /* No valid freespace */
dev->clear_media();
- Dmsg2(29, "update_free_space_dev: free_space=%d, free_space_errno=%d (!icmd)\n", dev->free_space, dev->free_space_errno);
+ Dmsg2(29, "update_free_space_dev: free_space=%s, free_space_errno=%d (!icmd)\n",
+ edit_uint64(dev->free_space, ed1), dev->free_space_errno);
return;
}
- edit_device_codes_dev(dev, ocmd, icmd);
+ dev->edit_mount_codes(ocmd, icmd);
Dmsg1(29, "update_free_space_dev: cmd=%s\n", ocmd.c_str());
while (1) {
if (run_program_full_output(ocmd.c_str(), dev->max_open_wait/2, results) == 0) {
- Dmsg1(100, "Free space program run : %s\n", results);
+ Dmsg1(400, "Free space program run : %s\n", results);
free = str_to_int64(results);
if (free >= 0) {
dev->free_space = free;
- dev->free_space_errno = 1;
+ dev->free_space_errno = 0;
+ dev->set_freespace_ok(); /* have valid freespace */
dev->set_media();
Mmsg0(dev->errmsg, "");
break;
}
}
dev->free_space = 0;
- dev->free_space_errno = -EPIPE;
- Mmsg1(dev->errmsg, "Cannot run free space command (%s)\n", results);
+ dev->free_space_errno = EPIPE;
+ dev->clear_freespace_ok(); /* no valid freespace */
+ Mmsg1(dev->errmsg, _("Cannot run free space command (%s)\n"), results);
if (--timeout > 0) {
Dmsg4(40, "Cannot get free space on device %s. free_space=%s, "
continue;
}
- dev->dev_errno = -dev->free_space_errno;
+ dev->dev_errno = dev->free_space_errno;
Dmsg4(40, "Cannot get free space on device %s. free_space=%s, "
"free_space_errno=%d ERR=%s\n",
dev->print_name(), edit_uint64(dev->free_space, ed1),
}
free_pool_memory(results);
- Dmsg3(29, "update_free_space_dev: free_space=%s, free_space_errno=%d have_media=%d\n",
- edit_uint64(dev->free_space, ed1), dev->free_space_errno, dev->have_media());
+ Dmsg4(29, "update_free_space_dev: free_space=%s freespace_ok=%d free_space_errno=%d have_media=%d\n",
+ edit_uint64(dev->free_space, ed1), !!dev->is_freespace_ok(), dev->free_space_errno, !!dev->have_media());
sm_check(__FILE__, __LINE__, false);
return;
}
/*
* Write a part (Vol, Vol.1, ...) from the spool to the DVD
- * This MUST only be called from open_next_part. Otherwise the part number
- * is not updated.
+ * This routine does not update the part number, so normally, you
+ * should call open_next_part()
+ * It is also called from truncate_dvd to "blank" the medium, as
+ * well as from block.c when the DVD is full to write the last part.
*/
-static bool dvd_write_part(DCR *dcr)
+bool dvd_write_part(DCR *dcr)
{
DEVICE *dev = dcr->dev;
+ POOL_MEM archive_name(PM_FNAME);
+
+ /* Don't write empty part files.
+ * This is only useful when growisofs does not support write beyond
+ * the 4GB boundary.
+ * Example :
+ * - 3.9 GB on the volume, dvd-freespace reports 0.4 GB free
+ * - Write 0.2 GB on the volume, Bacula thinks it could still
+ * append data, it creates a new empty part.
+ * - dvd-freespace reports 0 GB free, as the 4GB boundary has
+ * been crossed
+ * - Bacula thinks he must finish to write to the device, so it
+ * tries to write the last part (0-byte), but dvd-writepart fails...
+ *
+ * There is one exception: when recycling a volume, we write a blank part
+ * file, so, then, we need to accept to write it.
+ */
+ if ((dev->part_size == 0) && (dev->part > 0)) {
+ Dmsg2(29, "dvd_write_part: device is %s, won't write blank part %d\n", dev->print_name(), dev->part);
+ /* Delete spool file */
+ make_spooled_dvd_filename(dev, archive_name);
+ unlink(archive_name.c_str());
+ Dmsg1(29, "unlink(%s)\n", archive_name.c_str());
+ sm_check(__FILE__, __LINE__, false);
+ return true;
+ }
+
POOL_MEM ocmd(PM_FNAME);
+ POOL_MEM results(PM_MESSAGE);
char* icmd;
int status;
int timeout;
Dmsg3(29, "dvd_write_part: device is %s, part is %d, is_mounted=%d\n", dev->print_name(), dev->part, dev->is_mounted());
icmd = dev->device->write_part_command;
- edit_device_codes_dev(dev, ocmd, icmd);
+ dev->edit_mount_codes(ocmd, icmd);
/*
- * Wait at most the time a maximum size part is written in DVD 0.5x speed
- * FIXME: Minimum speed should be in device configuration
+ * original line follows
+ * timeout = dev->max_open_wait + (dev->max_part_size/(1350*1024/2));
+ * I modified this for a longer timeout; pre-formatting, blanking and
+ * writing can take quite a while
*/
- timeout = dev->max_open_wait + (dev->max_part_size/(1350*1024/2));
-
+
+ /* Explanation of the timeout value, when writing the first part,
+ * by Arno Lehmann :
+ * 9 GB, write speed 1x: 6990 seconds (almost 2 hours...)
+ * Overhead: 900 seconds (starting, initializing, finalizing,probably
+ * reloading 15 minutes)
+ * Sum: 15780.
+ * A reasonable last-exit timeout would be 16000 seconds. Quite long -
+ * almost 4.5 hours, but hopefully, that timeout will only ever be needed
+ * in case of a serious emergency.
+ */
+
+ if (dev->part == 0)
+ timeout = 16000;
+ else
+ timeout = dev->max_open_wait + (dev->part_size/(1350*1024/4));
+
Dmsg2(29, "dvd_write_part: cmd=%s timeout=%d\n", ocmd.c_str(), timeout);
-{
- POOL_MEM results(PM_MESSAGE);
- sm_check(__FILE__, __LINE__, false);
status = run_program_full_output(ocmd.c_str(), timeout, results.c_str());
- sm_check(__FILE__, __LINE__, false);
if (status != 0) {
- Mmsg1(dev->errmsg, "Error while writing current part to the DVD: %s",
+ Mmsg1(dev->errmsg, _("Error while writing current part to the DVD: %s"),
results.c_str());
Dmsg1(000, "%s", dev->errmsg);
dev->dev_errno = EIO;
+ mark_volume_in_error(dcr);
+ sm_check(__FILE__, __LINE__, false);
return false;
+ } else {
+ dev->num_parts++; /* there is now one more part on DVD */
}
- sm_check(__FILE__, __LINE__, false);
-}
-{
- POOL_MEM archive_name(PM_FNAME);
/* Delete spool file */
make_spooled_dvd_filename(dev, archive_name);
unlink(archive_name.c_str());
Dmsg1(29, "unlink(%s)\n", archive_name.c_str());
sm_check(__FILE__, __LINE__, false);
-}
- /* growisofs umount the device, so remount it (it will update the free space) */
+ /* growisofs umounted the device, so remount it (it will update the free space) */
dev->clear_mounted();
- mount_dev(dev, 1);
+ mount_dvd(dev, 1);
Jmsg(dcr->jcr, M_INFO, 0, _("Remaining free space %s on %s\n"),
edit_uint64_with_commas(dev->free_space, ed1), dev->print_name());
sm_check(__FILE__, __LINE__, false);
* - Increment part number
* - Reopen the device
*/
-int open_next_part(DCR *dcr)
+int dvd_open_next_part(DCR *dcr)
{
DEVICE *dev = dcr->dev;
*/
if (dev->is_dvd() && (dev->part >= dev->num_parts) && dev->can_append()) {
if (!dvd_write_part(dcr)) {
+ Dmsg0(29, "Error in dvd_write part.\n");
return -1;
}
}
}
}
- Dmsg2(100, "Set npart=%d to part=%d\n", dev->num_parts, dev->part);
- dev->num_parts = dev->part;
+ Dmsg2(400, "num_parts=%d part=%d\n", dev->num_parts, dev->part);
dev->VolCatInfo.VolCatParts = dev->part;
make_spooled_dvd_filename(dev, archive_name); /* makes spool name */
}
}
}
+ /* KES. It seems to me that this if should not be
+ * needed. If num_parts represents what is on the DVD
+ * we should only need to change it when writing a part
+ * to the DVD.
+ * NB. As dvd_write_part increments dev->num_parts, I also
+ * think it is not needed.
+ */
if (dev->num_parts < dev->part) {
- Dmsg2(100, "Set npart=%d to part=%d\n", dev->num_parts, dev->part);
+ Dmsg2(400, "Set npart=%d to part=%d\n", dev->num_parts, dev->part);
dev->num_parts = dev->part;
dev->VolCatInfo.VolCatParts = dev->part;
}
- Dmsg2(50, "Call dev->open(vol=%s, mode=%d\n", dev->VolCatInfo.VolCatName,
+ Dmsg2(400, "Call dev->open(vol=%s, mode=%d\n", dev->VolCatInfo.VolCatName,
dev->openmode);
/* Open next part */
* - Close the fd
* - Reopen the device
*/
-int open_first_part(DCR *dcr, int mode)
+int dvd_open_first_part(DCR *dcr, int mode)
{
DEVICE *dev = dcr->dev;
- Dmsg3(29, "Enter: ==== open_first_part dev=%s Vol=%s mode=%d\n", dev->print_name(),
- dev->VolCatInfo.VolCatName, dev->openmode);
+ Dmsg5(29, "Enter: ==== open_first_part dev=%s Vol=%s mode=%d num_parts=%d append=%d\n", dev->print_name(),
+ dev->VolCatInfo.VolCatName, dev->openmode, dev->num_parts, dev->can_append());
if (dev->fd >= 0) {
close(dev->fd);
dev->part_start = 0;
dev->part = 0;
- Dmsg2(50, "Call dev->open(vol=%s, mode=%d)\n", dcr->VolCatInfo.VolCatName,
+ Dmsg2(400, "Call dev->open(vol=%s, mode=%d)\n", dcr->VolCatInfo.VolCatName,
mode);
+ int append = dev->can_append();
if (dev->open(dcr, mode) < 0) {
- Dmsg0(50, "open dev() failed\n");
+ Dmsg0(400, "open dev() failed\n");
return -1;
}
- Dmsg1(50, "Leave open_first_part state=%s\n", dev->is_open()?"open":"not open");
+ if (append && (dev->part == dev->num_parts)) { /* If needed, set the append flag back */
+ dev->set_append();
+ }
+ Dmsg2(400, "Leave open_first_part state=%s append=%d\n", dev->is_open()?"open":"not open", dev->can_append());
+
return dev->fd;
}
{
DCR *dcr;
off_t pos;
+ char ed1[50], ed2[50];
- Dmsg3(100, "Enter lseek_dev fd=%d part=%d nparts=%d\n", dev->fd,
+ Dmsg3(400, "Enter lseek_dev fd=%d part=%d nparts=%d\n", dev->fd,
dev->part, dev->num_parts);
if (!dev->is_dvd()) {
- Dmsg0(100, "Using sys lseek\n");
+ Dmsg0(400, "Using sys lseek\n");
return lseek(dev->fd, offset, whence);
}
dcr = (DCR *)dev->attached_dcrs->first(); /* any dcr will do */
switch(whence) {
case SEEK_SET:
- Dmsg2(100, "lseek_dev SEEK_SET to %d (part_start=%d)\n", (int)offset, (int)dev->part_start);
+ Dmsg2(400, "lseek_dev SEEK_SET to %s (part_start=%s)\n",
+ edit_uint64(offset, ed1), edit_uint64(dev->part_start, ed2));
if ((uint64_t)offset >= dev->part_start) {
if (((uint64_t)offset == dev->part_start) || ((uint64_t)offset < (dev->part_start+dev->part_size))) {
/* We are staying in the current part, just seek */
}
} else {
/* Load next part, and start again */
- if (open_next_part(dcr) < 0) {
- Dmsg0(100, "lseek_dev failed while trying to open the next part\n");
+ if (dvd_open_next_part(dcr) < 0) {
+ Dmsg0(400, "lseek_dev failed while trying to open the next part\n");
return -1;
}
return lseek_dev(dev, offset, SEEK_SET);
* so just load the first one, and seek again
* until the right one is loaded
*/
- if (open_first_part(dcr, dev->openmode) < 0) {
- Dmsg0(100, "lseek_dev failed while trying to open the first part\n");
+ if (dvd_open_first_part(dcr, dev->openmode) < 0) {
+ Dmsg0(400, "lseek_dev failed while trying to open the first part\n");
return -1;
}
return lseek_dev(dev, offset, SEEK_SET);
}
break;
case SEEK_CUR:
- Dmsg1(100, "lseek_dev SEEK_CUR to %d\n", (int)offset);
+ Dmsg1(400, "lseek_dev SEEK_CUR to %s\n", edit_uint64(offset, ed1));
if ((pos = lseek(dev->fd, (off_t)0, SEEK_CUR)) < 0) {
return pos;
}
pos += dev->part_start;
if (offset == 0) {
- Dmsg1(100, "lseek_dev SEEK_CUR returns %d\n", pos);
+ Dmsg1(400, "lseek_dev SEEK_CUR returns %s\n", edit_uint64(pos, ed1));
return pos;
} else { /* Not used in Bacula, but should work */
return lseek_dev(dev, pos, SEEK_SET);
}
break;
case SEEK_END:
- Dmsg1(100, "lseek_dev SEEK_END to %d\n", (int)offset);
+ Dmsg1(400, "lseek_dev SEEK_END to %s\n", edit_uint64(offset, ed1));
/*
* Bacula does not use offsets for SEEK_END
* Also, Bacula uses seek_end only when it wants to
* itself is read-only (as currently implemented).
*/
if (offset > 0) { /* Not used by bacula */
- Dmsg1(100, "lseek_dev SEEK_END called with an invalid offset %d\n", (int)offset);
+ Dmsg1(400, "lseek_dev SEEK_END called with an invalid offset %s\n",
+ edit_uint64(offset, ed1));
errno = EINVAL;
return -1;
}
if ((pos = lseek(dev->fd, (off_t)0, SEEK_END)) < 0) {
return pos;
} else {
- Dmsg1(100, "lseek_dev SEEK_END returns %d\n", pos + dev->part_start);
+ Dmsg1(400, "lseek_dev SEEK_END returns %s\n",
+ edit_uint64(pos + dev->part_start, ed1));
return pos + dev->part_start;
}
} else {
*/
int modesave = dev->openmode;
/* Works because num_parts > 0. */
- if (open_first_part(dcr, OPEN_READ_ONLY) < 0) {
- Dmsg0(100, "lseek_dev failed while trying to open the first part\n");
+ if (dvd_open_first_part(dcr, OPEN_READ_ONLY) < 0) {
+ Dmsg0(400, "lseek_dev failed while trying to open the first part\n");
return -1;
}
if (dev->num_parts > 0) {
while (dev->part < (dev->num_parts-1)) {
- if (open_next_part(dcr) < 0) {
- Dmsg0(100, "lseek_dev failed while trying to open the next part\n");
+ if (dvd_open_next_part(dcr) < 0) {
+ Dmsg0(400, "lseek_dev failed while trying to open the next part\n");
return -1;
}
}
dev->openmode = modesave;
- if (open_next_part(dcr) < 0) {
- Dmsg0(100, "lseek_dev failed while trying to open the next part\n");
+ if (dvd_open_next_part(dcr) < 0) {
+ Dmsg0(400, "lseek_dev failed while trying to open the next part\n");
return -1;
}
}
* that requires mount, it will be written to the device.
*/
if (dev->is_dvd() && jcr->write_part_after_job && (dev->part_size > 0)) {
- Dmsg1(100, "Writing last part=%d write_partafter_job is set.\n",
+ Dmsg1(400, "Writing last part=%d write_partafter_job is set.\n",
dev->part);
if (dev->part < dev->num_parts) {
Jmsg3(jcr, M_FATAL, 0, _("Error while writing, current part number is less than the total number of parts (%d/%d, device=%s)\n"),
NB: No! If you call dvd_write_part, the part number is not updated.
You must open the next part, it will automatically write the part and
update the part number. */
- if (ok && (open_next_part(dcr) < 0)) {
-// if (ok && !dvd_write_part(dcr)) {
+ if (ok && (dvd_open_next_part(dcr) < 0)) {
Jmsg2(jcr, M_FATAL, 0, _("Unable to write part %s: ERR=%s\n"),
- dev->print_name(), strerror_dev(dev));
+ dev->print_name(), dev->bstrerror());
dev->dev_errno = EIO;
ok = false;
}
return ok;
}
+bool truncate_dvd(DCR *dcr) {
+ DEVICE* dev = dcr->dev;
-/*
- * Edit codes into (Un)MountCommand, Write(First)PartCommand
- * %% = %
- * %a = archive device name
- * %e = erase (set if cannot mount and first part)
- * %m = mount point
- * %v = last part name
- *
- * omsg = edited output message
- * imsg = input string containing edit codes (%x)
- *
- */
-static void edit_device_codes_dev(DEVICE* dev, POOL_MEM &omsg, const char *imsg)
-{
- const char *p;
- const char *str;
- char add[20];
+ /* Set num_parts to zero (on disk) */
+ dev->num_parts = 0;
+ dcr->VolCatInfo.VolCatParts = 0;
+ dev->VolCatInfo.VolCatParts = 0;
- POOL_MEM archive_name(PM_FNAME);
+ Dmsg0(400, "truncate_dvd: Opening first part (1)...\n");
+
+ dev->truncating = true;
+ if (dvd_open_first_part(dcr, OPEN_READ_WRITE) < 0) {
+ Dmsg0(400, "truncate_dvd: Error while opening first part (1).\n");
+ dev->truncating = false;
+ return false;
+ }
+ dev->truncating = false;
- omsg.c_str()[0] = 0;
- Dmsg1(800, "edit_device_codes: %s\n", imsg);
- for (p=imsg; *p; p++) {
- if (*p == '%') {
- switch (*++p) {
- case '%':
- str = "%";
- break;
- case 'a':
- str = dev->dev_name;
- break;
- case 'e':
- if (dev->part == 0 && !dev->is_mounted()) {
- str = "1";
- } else {
- str = "0";
+ Dmsg0(400, "truncate_dvd: Truncating...\n");
+
+ /* If necessary, truncate it. */
+ if (ftruncate(dev->fd, 0) != 0) {
+ berrno be;
+ Mmsg2(dev->errmsg, _("Unable to truncate device %s. ERR=%s\n"),
+ dev->print_name(), be.strerror());
+ return false;
+ }
+
+ close(dev->fd);
+ dev->fd = -1;
+ dev->clear_opened();
+
+ Dmsg0(400, "truncate_dvd: Opening first part (2)...\n");
+
+ if (!dvd_write_part(dcr)) {
+ Dmsg0(400, "truncate_dvd: Error while writing to DVD.\n");
+ return false;
+ }
+
+ /* Set num_parts to zero (on disk) */
+ dev->num_parts = 0;
+ dcr->VolCatInfo.VolCatParts = 0;
+ dev->VolCatInfo.VolCatParts = 0;
+
+ if (dvd_open_first_part(dcr, OPEN_READ_WRITE) < 0) {
+ Dmsg0(400, "truncate_dvd: Error while opening first part (2).\n");
+ return false;
+ }
+
+ return true;
+}
+
+/* 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, with the right
+ * volume name). */
+bool check_can_write_on_non_blank_dvd(DCR *dcr) {
+ DEVICE* dev = dcr->dev;
+ DIR* dp;
+ struct dirent *entry, *result;
+ int name_max;
+ int count = 0;
+ int matched = 0; /* We found an empty file with the right name. */
+ struct stat filestat;
+
+ 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.strerror());
+ return false;
+ }
+
+ entry = (struct dirent *)malloc(sizeof(struct dirent) + name_max + 1000);
+ while (1) {
+ if ((readdir_r(dp, entry, &result) != 0) || (result == NULL)) {
+ dev->dev_errno = EIO;
+ Dmsg2(129, "check_can_write_on_non_blank_dvd: failed to find suitable file 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->VolCatInfo.VolCatName);
+ if (strcmp(result->d_name, dev->VolCatInfo.VolCatName) == 0) {
+ /* Found the file, checking it is empty */
+ POOL_MEM filename(PM_FNAME);
+ pm_strcpy(filename, dev->device->mount_point);
+ if (filename.c_str()[strlen(filename.c_str())-1] != '/') {
+ pm_strcat(filename, "/");
}
- break;
- case 'n':
- bsnprintf(add, sizeof(add), "%d", dev->part);
- str = add;
- break;
- case 'm':
- str = dev->device->mount_point;
- break;
- case 'v':
- make_spooled_dvd_filename(dev, archive_name);
- str = archive_name.c_str();
- break;
- default:
- add[0] = '%';
- add[1] = *p;
- add[2] = 0;
- str = add;
- break;
+ pm_strcat(filename, dev->VolCatInfo.VolCatName);
+ 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.strerror());
+ return false;
+ }
+ Dmsg2(99, "check_can_write_on_non_blank_dvd: size of %s is %d\n",
+ filename.c_str(), filestat.st_size);
+ matched = filestat.st_size == 0;
}
- } else {
- add[0] = *p;
- add[1] = 0;
- str = add;
}
- Dmsg1(1900, "add_str %s\n", str);
- pm_strcat(omsg, (char *)str);
- Dmsg1(1800, "omsg=%s\n", omsg.c_str());
+ count++;
}
+ free(entry);
+ closedir(dp);
+
+ Dmsg2(29, "check_can_write_on_non_blank_dvd: got %d files in the mount point (matched=%d)\n", count, matched);
+
+ if (count != 3) {
+ /* There are more than 3 files (., .., and the volume file) */
+ return false;
+ }
+
+ return matched;
}
projects / bacula / bacula / blobdiff