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Added code to identify the cdrom drive when ReactOS is booted from a CD because the bios does not provide any usable information.

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The Boot-CD must be labeled 'REACTOS'.

svn path=/trunk/; revision=3456
This commit is contained in:
Eric Kohl 2002-09-04 13:58:56 +00:00
parent afe56d0970
commit 3e871a4ef6
1 changed files with 108 additions and 4 deletions
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112
reactos/ntoskrnl/io/arcname.c
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@ -16,7 +16,7 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* $Id: arcname.c,v 1.6 2002/08/20 20:37:12 hyperion Exp $
/* $Id: arcname.c,v 1.7 2002/09/04 13:58:56 ekohl Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
@ -36,6 +36,9 @@
#define NDEBUG
#include <internal/debug.h>
/* MACROS *******************************************************************/
#define FS_VOLUME_BUFFER_SIZE (MAX_PATH + sizeof(FILE_FS_VOLUME_INFORMATION))
/* FUNCTIONS ****************************************************************/
@ -165,16 +168,82 @@ IoCreateArcNames(VOID)
return(Status);
}
DPRINT("IoCreateArcNames() done\n");
return(STATUS_SUCCESS);
}
static NTSTATUS
IopCheckCdromDevices(PULONG DeviceNumber)
{
PFILE_FS_VOLUME_INFORMATION FileFsVolume;
PCONFIGURATION_INFORMATION ConfigInfo;
OBJECT_ATTRIBUTES ObjectAttributes;
UNICODE_STRING DeviceName;
WCHAR DeviceNameBuffer[32];
HANDLE Handle;
ULONG i;
NTSTATUS Status;
IO_STATUS_BLOCK IoStatusBlock;
USHORT Buffer[FS_VOLUME_BUFFER_SIZE];
FileFsVolume = (PFILE_FS_VOLUME_INFORMATION)Buffer;
ConfigInfo = IoGetConfigurationInformation();
for (i = 0; i < ConfigInfo->CDRomCount; i++)
{
swprintf(DeviceNameBuffer,
L"\\Device\\CdRom%lu\\",
i);
RtlInitUnicodeString(&DeviceName,
DeviceNameBuffer);
InitializeObjectAttributes(&ObjectAttributes,
&DeviceName,
0,
NULL,
NULL);
Status = NtOpenFile(&Handle,
FILE_ALL_ACCESS,
&ObjectAttributes,
NULL,
0,
0);
DPRINT("NtOpenFile() DeviceNumber %lu Status %lx\n", i, Status);
if (NT_SUCCESS(Status))
{
Status = NtQueryVolumeInformationFile(Handle,
&IoStatusBlock,
FileFsVolume,
FS_VOLUME_BUFFER_SIZE,
FileFsVolumeInformation);
DPRINT("NtQueryVolumeInformationFile() Status %lx\n", Status);
if (NT_SUCCESS(Status))
{
DPRINT("VolumeLabel: '%S'\n", FileFsVolume->VolumeLabel);
if (_wcsicmp(FileFsVolume->VolumeLabel, L"REACTOS") == 0)
{
NtClose(Handle);
*DeviceNumber = i;
return(STATUS_SUCCESS);
}
}
NtClose(Handle);
}
}
*DeviceNumber = (ULONG)-1;
return(STATUS_UNSUCCESSFUL);
}
NTSTATUS
IoCreateSystemRootLink(PCHAR ParameterLine)
{
OBJECT_ATTRIBUTES ObjectAttributes;
UNICODE_STRING LinkName;
UNICODE_STRING DeviceName;
UNICODE_STRING ArcName;
@ -184,7 +253,6 @@ IoCreateSystemRootLink(PCHAR ParameterLine)
PCHAR p;
NTSTATUS Status;
ULONG Length;
OBJECT_ATTRIBUTES ObjectAttributes;
HANDLE Handle;
/* Create local parameter line copy */
@ -213,7 +281,43 @@ IoCreateSystemRootLink(PCHAR ParameterLine)
DPRINT("Boot path: %s\n", "\\");
RtlCreateUnicodeStringFromAsciiz(&BootPath, "\\");
}
DPRINT("Arc name: %s\n", ParamBuffer);
DPRINT("ARC name: %s\n", ParamBuffer);
p = strstr(ParamBuffer, "cdrom");
if (p != NULL)
{
ULONG DeviceNumber;
DPRINT("Booting from CD-ROM!\n");
Status = IopCheckCdromDevices(&DeviceNumber);
if (!NT_SUCCESS(Status))
{
CPRINT("Failed to find setup disk!\n");
return(Status);
}
sprintf(p, "cdrom(%lu)", DeviceNumber);
DPRINT("New ARC name: %s\n", ParamBuffer);
/* Adjust original command line */
p = strstr(ParameterLine, "cdrom");
if (p != NULL);
{
char temp[256];
char *q;
q = strchr(p, ')');
if (q != NULL)
{
q++;
strcpy(temp, q);
sprintf(p, "cdrom(%lu)", DeviceNumber);
strcat(p, temp);
}
}
}
/* Only arc name left - build full arc name */
ArcNameBuffer = ExAllocatePool(PagedPool, 256 * sizeof(WCHAR));