本文整理汇总了C++中DEVICE::unmount方法的典型用法代码示例。如果您正苦于以下问题：C++ DEVICE::unmount方法的具体用法？C++ DEVICE::unmount怎么用？C++ DEVICE::unmount使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类DEVICE的用法示例。
在下文中一共展示了DEVICE::unmount方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: find_num_dvd_parts
/*
* Mount a DVD device, then scan to find out how many parts
* there are.
*/
int find_num_dvd_parts(DCR *dcr)
{
DEVICE *dev = dcr->dev;
int num_parts = 0;
if (!dev->is_dvd()) {
return 0;
}
if (dev->mount(1)) {
DIR* dp;
struct dirent *entry, *result;
int name_max;
int len = strlen(dcr->getVolCatName());
/* Now count the number of parts */
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, "find_num_dvd_parts: failed to open dir %s (dev=%s), ERR=%s\n",
dev->device->mount_point, dev->print_name(), be.bstrerror());
goto get_out;
}
entry = (struct dirent *)malloc(sizeof(struct dirent) + name_max + 1000);
Dmsg1(100, "Looking for Vol=%s\n", dcr->getVolCatName());
for ( ;; ) {
int flen;
bool ignore;
if ((readdir_r(dp, entry, &result) != 0) || (result == NULL)) {
dev->dev_errno = EIO;
Dmsg2(129, "find_num_dvd_parts: failed to find suitable file in dir %s (dev=%s)\n",
dev->device->mount_point, dev->print_name());
break;
}
flen = strlen(result->d_name);
ignore = true;
if (flen >= len) {
result->d_name[len] = 0;
if (strcmp(dcr->getVolCatName(), result->d_name) == 0) {
num_parts++;
Dmsg1(100, "find_num_dvd_parts: found part: %s\n", result->d_name);
ignore = false;
}
}
if (ignore) {
Dmsg2(129, "find_num_dvd_parts: ignoring %s in %s\n",
result->d_name, dev->device->mount_point);
}
}
free(entry);
closedir(dp);
Dmsg1(29, "find_num_dvd_parts = %d\n", num_parts);
}
get_out:
dev->set_freespace_ok();
if (dev->is_mounted()) {
dev->unmount(0);
}
return num_parts;
}示例2: truncate_dvd
bool truncate_dvd(DCR *dcr)
{
DEVICE* dev = dcr->dev;
dev->clear_freespace_ok(); /* need to update freespace */
dev->close_part(dcr);
if (!dev->unmount(1)) {
Dmsg0(400, "truncate_dvd: Failed to unmount DVD\n");
return false;
}
/* If necessary, delete its spool file. */
if (dev->is_part_spooled()) {
POOL_MEM archive_name(PM_FNAME);
/* Delete spool file */
make_spooled_dvd_filename(dev, archive_name);
unlink(archive_name.c_str());
dev->set_part_spooled(false);
}
/* Set num_dvd_parts to zero (on disk) */
dev->part = 0;
dev->num_dvd_parts = 0;
dcr->VolCatInfo.VolCatParts = 0;
dev->VolCatInfo.VolCatParts = 0;
Dmsg0(400, "truncate_dvd: Opening first part (1)...\n");
dev->truncating = true;
/* This creates a zero length spool file and sets part=1 */
if (!dvd_open_first_part(dcr, CREATE_READ_WRITE)) {
Dmsg0(400, "truncate_dvd: Error while opening first part (1).\n");
dev->truncating = false;
return false;
}
dev->close_part(dcr);
Dmsg0(400, "truncate_dvd: Opening first part (2)...\n");
/*
* Now actually truncate the DVD which is done by writing
* a zero length part to the DVD/
*/
if (!dvd_write_part(dcr)) {
Dmsg0(400, "truncate_dvd: Error while writing to DVD.\n");
dev->truncating = false;
return false;
}
dev->truncating = false;
/* Set num_dvd_parts to zero (on disk) */
dev->part = 0;
dev->num_dvd_parts = 0;
dcr->VolCatInfo.VolCatParts = 0;
dev->VolCatInfo.VolCatParts = 0;
/* Clear the size of the volume */
dev->VolCatInfo.VolCatBytes = 0;
dcr->VolCatInfo.VolCatBytes = 0;
/* Update catalog */
if (!dir_update_volume_info(dcr, false, true)) {
return false;
}
return true;
}