kernel/device_manager/devfs.cpp

81 			struct devfs_partition*	partition;
298 		if (vnode->stream.u.dev.partition == NULL) {
305 			put_vnode(fs->volume, vnode->stream.u.dev.partition->raw_device->id);
437 	if (device->stream.u.dev.partition != NULL)
444 	// create partition
445 	struct devfs_partition* partition = (struct devfs_partition*)malloc(
447 	if (partition == NULL)
450 	memcpy(&partition->info, &info, sizeof(partition_info));
454 	// you cannot change a partition once set
461 	// the partition device really needs it
462 	status = get_vnode(fs->volume, device->id, (void**)&partition->raw_device);
466 	// now create the partition vnode
475 	partitionNode->stream.u.dev.partition = partition;
488 	free(partition);
494 translate_partition_access(devfs_partition* partition, off_t& offset,
498 	ASSERT(offset < partition->info.size);
500 	size = (size_t)min_c((off_t)size, partition->info.size - offset);
501 	offset += partition->info.offset;
506 translate_partition_access(devfs_partition* partition, uint64& offset,
509 	const off_t partitionSize = partition->info.size;
510 	const off_t partitionOffset = partition->info.offset;
513 	// partition offset can theoretically be negative
537 translate_partition_access(devfs_partition* partition, io_request* request)
542 	ASSERT(offset + (off_t)request->Length() <= partition->info.size);
544 	request->SetOffset(offset + partition->info.offset);
850 		kprintf(" partition:   %p\n", vnode->stream.u.dev.partition);
851 		if (vnode->stream.u.dev.partition != NULL) {
852 			partition_info& info = vnode->stream.u.dev.partition->info;
854 				vnode->stream.u.dev.partition->raw_device);
859 			kprintf("  partition:       %" B_PRId32 "\n", info.partition);
862 				(addr_t)vnode->stream.u.dev.partition->raw_device);
1227 	if (vnode->stream.u.dev.partition != NULL) {
1228 		if (pos >= vnode->stream.u.dev.partition->info.size)
1231 		translate_partition_access(vnode->stream.u.dev.partition, pos,
1260 	if (vnode->stream.u.dev.partition != NULL) {
1261 		if (pos >= vnode->stream.u.dev.partition->info.size)
1264 		translate_partition_access(vnode->stream.u.dev.partition, pos,
1458 				struct devfs_partition* partition
1459 					= vnode->stream.u.dev.partition;
1460 				if (partition == NULL)
1469 				// patch values to match partition size
1474 					partition->info.size / geometry.bytes_per_sector,
1482 				struct devfs_partition* partition
1483 					= vnode->stream.u.dev.partition;
1502 				if (partition != NULL) {
1503 					// If there is a partition, offset all ranges according
1504 					// to the partition start.
1505 					// Range size may be reduced to fit the partition size.
1507 						if (!translate_partition_access(partition,
1515 					dprintf("TRIM: devfs: TRIM ranges after partition"
1539 				struct devfs_partition* partition
1540 					= vnode->stream.u.dev.partition;
1542 					|| partition == NULL
1546 				return user_memcpy(buffer, &partition->info,
1686 	if (vnode->stream.u.dev.partition != NULL) {
1687 		if (pos >= vnode->stream.u.dev.partition->info.size)
1690 		translate_partition_access(vnode->stream.u.dev.partition, pos,
1745 	if (vnode->stream.u.dev.partition != NULL) {
1746 		if (pos >= vnode->stream.u.dev.partition->info.size)
1749 		translate_partition_access(vnode->stream.u.dev.partition, pos,
1803 	if (vnode->stream.u.dev.partition != NULL) {
1805 				> vnode->stream.u.dev.partition->info.size) {
1809 		translate_partition_access(vnode->stream.u.dev.partition, request);
1846 		if (vnode->stream.u.dev.partition != NULL) {
1847 			stat->st_size = vnode->stream.u.dev.partition->info.size;
2096 	TRACE(("publish partition: %s (device \"%s\", offset %" B_PRIdOFF
2221 	if (!S_ISCHR(node->stream.type) || node->stream.u.dev.partition != NULL) {