ULONG ExtensionFlags;
} DEVOBJ_EXTENSION2;
-typedef enum {
- system_root_unknown,
- system_root_partition,
- system_root_btrfs
-} system_root_type;
-
-typedef struct {
- uint32_t disk_num;
- uint32_t partition_num;
- BTRFS_UUID uuid;
- system_root_type type;
-} system_root;
-
-static void get_system_root(system_root* sr) {
+static bool get_system_root() {
NTSTATUS Status;
HANDLE h;
UNICODE_STRING us, target;
static const WCHAR system_root[] = L"\\SystemRoot";
static const WCHAR boot_device[] = L"\\Device\\BootDevice";
- static const WCHAR arc_prefix[] = L"\\ArcName\\multi(0)disk(0)rdisk(";
- static const WCHAR arc_middle[] = L")partition(";
static const WCHAR arc_btrfs_prefix[] = L"\\ArcName\\btrfs(";
us.Buffer = (WCHAR*)system_root;
Status = ZwOpenSymbolicLinkObject(&h, GENERIC_READ, &objatt);
if (!NT_SUCCESS(Status)) {
ERR("ZwOpenSymbolicLinkObject returned %08lx\n", Status);
- return;
+ return false;
}
target.Length = target.MaximumLength = 0;
if (Status != STATUS_BUFFER_TOO_SMALL) {
ERR("ZwQuerySymbolicLinkObject returned %08lx\n", Status);
NtClose(h);
- return;
+ return false;
}
if (retlen == 0) {
NtClose(h);
- return;
+ return false;
}
target.Buffer = ExAllocatePoolWithTag(NonPagedPool, retlen, ALLOC_TAG);
if (!target.Buffer) {
ERR("out of memory\n");
NtClose(h);
- return;
+ return false;
}
target.Length = target.MaximumLength = (USHORT)retlen;
ERR("ZwQuerySymbolicLinkObject returned %08lx\n", Status);
NtClose(h);
ExFreePool(target.Buffer);
- return;
+ return false;
}
NtClose(h);
break;
}
- sr->type = system_root_unknown;
-
- if (target.Length >= sizeof(arc_prefix) - sizeof(WCHAR) &&
- RtlCompareMemory(target.Buffer, arc_prefix, sizeof(arc_prefix) - sizeof(WCHAR)) == sizeof(arc_prefix) - sizeof(WCHAR)) {
- WCHAR* s = &target.Buffer[(sizeof(arc_prefix) / sizeof(WCHAR)) - 1];
- ULONG left = ((target.Length - sizeof(arc_prefix)) / sizeof(WCHAR)) + 1;
-
- if (left == 0 || s[0] < '0' || s[0] > '9') {
- ExFreePool(target.Buffer);
- return;
- }
-
- sr->disk_num = 0;
-
- while (left > 0 && s[0] >= '0' && s[0] <= '9') {
- sr->disk_num *= 10;
- sr->disk_num += s[0] - '0';
- s++;
- left--;
- }
-
- if (left <= (sizeof(arc_middle) / sizeof(WCHAR)) - 1 ||
- RtlCompareMemory(s, arc_middle, sizeof(arc_middle) - sizeof(WCHAR)) != sizeof(arc_middle) - sizeof(WCHAR)) {
- ExFreePool(target.Buffer);
- return;
- }
-
- s = &s[(sizeof(arc_middle) / sizeof(WCHAR)) - 1];
- left -= (sizeof(arc_middle) / sizeof(WCHAR)) - 1;
-
- if (left == 0 || s[0] < '0' || s[0] > '9') {
- ExFreePool(target.Buffer);
- return;
- }
-
- sr->partition_num = 0;
-
- while (left > 0 && s[0] >= '0' && s[0] <= '9') {
- sr->partition_num *= 10;
- sr->partition_num += s[0] - '0';
- s++;
- left--;
- }
-
- sr->type = system_root_partition;
- } else if (target.Length >= sizeof(arc_btrfs_prefix) - sizeof(WCHAR) &&
+ if (target.Length >= sizeof(arc_btrfs_prefix) - sizeof(WCHAR) &&
RtlCompareMemory(target.Buffer, arc_btrfs_prefix, sizeof(arc_btrfs_prefix) - sizeof(WCHAR)) == sizeof(arc_btrfs_prefix) - sizeof(WCHAR)) {
WCHAR* s = &target.Buffer[(sizeof(arc_btrfs_prefix) / sizeof(WCHAR)) - 1];
-#ifdef __REACTOS__
- unsigned int i;
-#endif // __REACTOS__
-#ifndef __REACTOS__
for (unsigned int i = 0; i < 16; i++) {
-#else
- for (i = 0; i < 16; i++) {
-#endif // __REACTOS__
if (*s >= '0' && *s <= '9')
- sr->uuid.uuid[i] = (*s - '0') << 4;
+ boot_uuid.uuid[i] = (*s - '0') << 4;
else if (*s >= 'a' && *s <= 'f')
- sr->uuid.uuid[i] = (*s - 'a' + 0xa) << 4;
+ boot_uuid.uuid[i] = (*s - 'a' + 0xa) << 4;
else if (*s >= 'A' && *s <= 'F')
- sr->uuid.uuid[i] = (*s - 'A' + 0xa) << 4;
+ boot_uuid.uuid[i] = (*s - 'A' + 0xa) << 4;
else {
ExFreePool(target.Buffer);
- return;
+ return false;
}
s++;
if (*s >= '0' && *s <= '9')
- sr->uuid.uuid[i] |= *s - '0';
+ boot_uuid.uuid[i] |= *s - '0';
else if (*s >= 'a' && *s <= 'f')
- sr->uuid.uuid[i] |= *s - 'a' + 0xa;
+ boot_uuid.uuid[i] |= *s - 'a' + 0xa;
else if (*s >= 'A' && *s <= 'F')
- sr->uuid.uuid[i] |= *s - 'A' + 0xa;
+ boot_uuid.uuid[i] |= *s - 'A' + 0xa;
else {
ExFreePool(target.Buffer);
- return;
+ return false;
}
s++;
if (i == 3 || i == 5 || i == 7 || i == 9) {
if (*s != '-') {
ExFreePool(target.Buffer);
- return;
+ return false;
}
s++;
if (*s != ')') {
ExFreePool(target.Buffer);
- return;
+ return false;
}
- sr->type = system_root_btrfs;
- }
-
- ExFreePool(target.Buffer);
-}
-
-static void append_int_to_us(UNICODE_STRING* us, unsigned int n) {
- unsigned int num, digits = 0;
- WCHAR* ptr;
-
- if (n == 0) {
- us->Buffer[us->Length / sizeof(WCHAR)] = '0';
- us->Length += sizeof(WCHAR);
- return;
- }
-
- num = n;
-
- while (num > 0) {
- digits++;
- num /= 10;
- }
-
- ptr = &us->Buffer[(us->Length / sizeof(WCHAR)) + digits - 1];
+ ExFreePool(target.Buffer);
- while (n > 0) {
- *ptr = L'0' + (n % 10);
- ptr--;
- n /= 10;
+ return true;
}
- us->Length += digits * sizeof(WCHAR);
-}
-
-static void change_symlink(uint32_t disk_num, uint32_t partition_num, BTRFS_UUID* uuid) {
- NTSTATUS Status;
- UNICODE_STRING us, us2;
- WCHAR symlink[60], target[(sizeof(BTRFS_VOLUME_PREFIX) / sizeof(WCHAR)) + 36], *w;
-#ifdef __REACTOS__
- unsigned int i;
-#endif
-
- static const WCHAR dev_path1[] = L"\\Device\\Harddisk";
- static const WCHAR dev_path2[] = L"\\Partition";
-
- us.Buffer = symlink;
- us.Length = sizeof(dev_path1) - sizeof(WCHAR);
- us.MaximumLength = sizeof(symlink);
-
- RtlCopyMemory(symlink, dev_path1, sizeof(dev_path1) - sizeof(WCHAR));
-
- append_int_to_us(&us, disk_num);
-
- RtlCopyMemory(&us.Buffer[us.Length / sizeof(WCHAR)], dev_path2, sizeof(dev_path2) - sizeof(WCHAR));
- us.Length += sizeof(dev_path2) - sizeof(WCHAR);
-
- append_int_to_us(&us, partition_num);
-
- Status = IoDeleteSymbolicLink(&us);
- if (!NT_SUCCESS(Status))
- ERR("IoDeleteSymbolicLink returned %08lx\n", Status);
-
- RtlCopyMemory(target, BTRFS_VOLUME_PREFIX, sizeof(BTRFS_VOLUME_PREFIX) - sizeof(WCHAR));
-
- w = &target[(sizeof(BTRFS_VOLUME_PREFIX) / sizeof(WCHAR)) - 1];
-
-#ifndef __REACTOS__
- for (unsigned int i = 0; i < 16; i++) {
-#else
- for (i = 0; i < 16; i++) {
-#endif
- *w = hex_digit(uuid->uuid[i] >> 4); w++;
- *w = hex_digit(uuid->uuid[i] & 0xf); w++;
-
- if (i == 3 || i == 5 || i == 7 || i == 9) {
- *w = L'-';
- w++;
- }
- }
-
- *w = L'}';
-
- us2.Buffer = target;
- us2.Length = us2.MaximumLength = sizeof(target);
+ ExFreePool(target.Buffer);
- Status = IoCreateSymbolicLink(&us, &us2);
- if (!NT_SUCCESS(Status))
- ERR("IoCreateSymbolicLink returned %08lx\n", Status);
+ return false;
}
static void mountmgr_notification(BTRFS_UUID* uuid) {
ULONG mmtnlen;
MOUNTMGR_TARGET_NAME* mmtn;
WCHAR* w;
-#ifdef __REACTOS__
- unsigned int i;
-#endif
RtlInitUnicodeString(&mmdevpath, MOUNTMGR_DEVICE_NAME);
Status = IoGetDeviceObjectPointer(&mmdevpath, FILE_READ_ATTRIBUTES, &FileObject, &mountmgr);
w = &mmtn->DeviceName[(sizeof(BTRFS_VOLUME_PREFIX) / sizeof(WCHAR)) - 1];
-#ifndef __REACTOS__
for (unsigned int i = 0; i < 16; i++) {
-#else
- for (i = 0; i < 16; i++) {
-#endif
*w = hex_digit(uuid->uuid[i] >> 4); w++;
*w = hex_digit(uuid->uuid[i] & 0xf); w++;
mountmgr_notification(&pdode->uuid);
}
-/* If booting from Btrfs, Windows will pass the device object for the raw partition to
- * mount_vol - which is no good to us, as we only use the \Device\Btrfs{} devices we
- * create so that RAID works correctly.
- * At the time check_system_root gets called, \SystemRoot is a symlink to the ARC device,
- * e.g. \ArcName\multi(0)disk(0)rdisk(0)partition(1)\Windows. We can't change the symlink,
- * as it gets clobbered by IopReassignSystemRoot shortly afterwards, and we can't touch
- * the \ArcName symlinks as they haven't been created yet. Instead, we need to change the
- * symlink \Device\HarddiskX\PartitionY, which is what the ArcName symlink will shortly
- * point to.
- */
-void __stdcall check_system_root(PDRIVER_OBJECT DriverObject, PVOID Context, ULONG Count) {
- system_root sr;
+void check_system_root() {
LIST_ENTRY* le;
- bool done = false;
PDEVICE_OBJECT pdo_to_add = NULL;
- volume_child* boot_vc = NULL;
-
- TRACE("(%p, %p, %lu)\n", DriverObject, Context, Count);
- UNUSED(DriverObject);
- UNUSED(Context);
- UNUSED(Count);
+ TRACE("()\n");
// wait for any PNP notifications in progress to finish
ExAcquireResourceExclusiveLite(&boot_lock, TRUE);
ExReleaseResourceLite(&boot_lock);
- get_system_root(&sr);
-
- if (sr.type == system_root_partition) {
- TRACE("system boot partition is disk %u, partition %u\n", sr.disk_num, sr.partition_num);
-
- ExAcquireResourceSharedLite(&pdo_list_lock, true);
-
- le = pdo_list.Flink;
- while (le != &pdo_list) {
- LIST_ENTRY* le2;
- pdo_device_extension* pdode = CONTAINING_RECORD(le, pdo_device_extension, list_entry);
-
- ExAcquireResourceSharedLite(&pdode->child_lock, true);
-
- le2 = pdode->children.Flink;
-
- while (le2 != &pdode->children) {
- volume_child* vc = CONTAINING_RECORD(le2, volume_child, list_entry);
-
- if (vc->disk_num == sr.disk_num && vc->part_num == sr.partition_num) {
- change_symlink(sr.disk_num, sr.partition_num, &pdode->uuid);
- done = true;
-
- vc->boot_volume = true;
- boot_uuid = pdode->uuid;
-
- if (!pdode->vde)
- pdo_to_add = pdode->pdo;
-
- boot_vc = vc;
-
- break;
- }
-
- le2 = le2->Flink;
- }
-
- if (done) {
- le2 = pdode->children.Flink;
-
- while (le2 != &pdode->children) {
- volume_child* vc = CONTAINING_RECORD(le2, volume_child, list_entry);
-
- /* On Windows 7 we need to clear the DO_SYSTEM_BOOT_PARTITION flag of
- * all of our underlying partition objects - otherwise IopMountVolume
- * will bugcheck with UNMOUNTABLE_BOOT_VOLUME when it tries and fails
- * to mount one. */
- if (vc->devobj) {
- PDEVICE_OBJECT dev = vc->devobj;
-
- ObReferenceObject(dev);
-
- while (dev) {
- PDEVICE_OBJECT dev2 = IoGetLowerDeviceObject(dev);
-
- dev->Flags &= ~DO_SYSTEM_BOOT_PARTITION;
-
- ObDereferenceObject(dev);
-
- dev = dev2;
- }
- }
-
- le2 = le2->Flink;
- }
-
- ExReleaseResourceLite(&pdode->child_lock);
-
- break;
- }
-
- ExReleaseResourceLite(&pdode->child_lock);
+ if (!get_system_root())
+ return;
- le = le->Flink;
- }
+ ExAcquireResourceSharedLite(&pdo_list_lock, true);
- ExReleaseResourceLite(&pdo_list_lock);
- } else if (sr.type == system_root_btrfs) {
- boot_uuid = sr.uuid;
+ le = pdo_list.Flink;
+ while (le != &pdo_list) {
+ pdo_device_extension* pdode = CONTAINING_RECORD(le, pdo_device_extension, list_entry);
- ExAcquireResourceSharedLite(&pdo_list_lock, true);
+ if (RtlCompareMemory(&pdode->uuid, &boot_uuid, sizeof(BTRFS_UUID)) == sizeof(BTRFS_UUID)) {
+ if (!pdode->vde)
+ pdo_to_add = pdode->pdo;
+ else if (pdode->vde->device && !(pdode->vde->device->Flags & DO_SYSTEM_BOOT_PARTITION)) { // AddDevice has beaten us to it
+ NTSTATUS Status;
- le = pdo_list.Flink;
- while (le != &pdo_list) {
- pdo_device_extension* pdode = CONTAINING_RECORD(le, pdo_device_extension, list_entry);
+ pdode->vde->device->Flags |= DO_SYSTEM_BOOT_PARTITION;
+ pdode->pdo->Flags |= DO_SYSTEM_BOOT_PARTITION;
- if (RtlCompareMemory(&pdode->uuid, &sr.uuid, sizeof(BTRFS_UUID)) == sizeof(BTRFS_UUID)) {
- if (!pdode->vde)
- pdo_to_add = pdode->pdo;
+ Status = IoSetDeviceInterfaceState(&pdode->vde->bus_name, false);
+ if (!NT_SUCCESS(Status))
+ ERR("IoSetDeviceInterfaceState returned %08lx\n", Status);
- break;
+ Status = IoSetDeviceInterfaceState(&pdode->vde->bus_name, true);
+ if (!NT_SUCCESS(Status))
+ ERR("IoSetDeviceInterfaceState returned %08lx\n", Status);
}
- le = le->Flink;
+ break;
}
- ExReleaseResourceLite(&pdo_list_lock);
+ le = le->Flink;
}
- if (boot_vc) {
- NTSTATUS Status;
- UNICODE_STRING name;
-
- /* On Windows 8, mountmgr!MountMgrFindBootVolume returns the first volume in its database
- * with the DO_SYSTEM_BOOT_PARTITION flag set. We've cleared the bit on the underlying devices,
- * but as it caches it we need to disable and re-enable the volume so mountmgr receives a PNP
- * notification to refresh its list. */
-
- static const WCHAR prefix[] = L"\\??";
-
- name.Length = name.MaximumLength = boot_vc->pnp_name.Length + sizeof(prefix) - sizeof(WCHAR);
-
- name.Buffer = ExAllocatePoolWithTag(PagedPool, name.MaximumLength, ALLOC_TAG);
- if (!name.Buffer)
- ERR("out of memory\n");
- else {
- RtlCopyMemory(name.Buffer, prefix, sizeof(prefix) - sizeof(WCHAR));
- RtlCopyMemory(&name.Buffer[(sizeof(prefix) / sizeof(WCHAR)) - 1], boot_vc->pnp_name.Buffer, boot_vc->pnp_name.Length);
-
- Status = IoSetDeviceInterfaceState(&name, false);
- if (!NT_SUCCESS(Status))
- ERR("IoSetDeviceInterfaceState returned %08lx\n", Status);
-
- Status = IoSetDeviceInterfaceState(&name, true);
- if (!NT_SUCCESS(Status))
- ERR("IoSetDeviceInterfaceState returned %08lx\n", Status);
-
- ExFreePool(name.Buffer);
- }
- }
+ ExReleaseResourceLite(&pdo_list_lock);
- if (sr.type == system_root_btrfs || boot_vc)
- check_boot_options();
+ check_boot_options();
// If our FS depends on volumes that aren't there when we do our IoRegisterPlugPlayNotification calls
// in DriverEntry, bus_query_device_relations won't get called until it's too late. We need to do our
projects / reactos.git / blobdiff