[FASTFAT] Fix size checking in VfatGetFileNameInformation()
[reactos.git] / drivers / filesystems / fs_rec / udfs.c
1 /*
2 * COPYRIGHT: See COPYING in the top level directory
3 * PROJECT: ReactOS File System Recognizer
4 * FILE: drivers/filesystems/fs_rec/udfs.c
5 * PURPOSE: USFS Recognizer
6 * PROGRAMMER: Alex Ionescu (alex.ionescu@reactos.org)
7 * Eric Kohl
8 */
9
10 /* INCLUDES *****************************************************************/
11
12 #include "fs_rec.h"
13
14 #define NDEBUG
15 #include <debug.h>
16
17 #include "udfs.h"
18
19 /* FUNCTIONS ****************************************************************/
20
21 BOOLEAN
22 NTAPI
23 FsRecIsUdfsVolume(IN PDEVICE_OBJECT DeviceObject,
24 IN ULONG SectorSize)
25 {
26 PVOLSTRUCTDESC VolumeStructDesc = NULL;
27 LARGE_INTEGER Offset;
28 BOOLEAN ret = FALSE;
29 int i;
30 PAGED_CODE();
31
32 Offset.QuadPart = 16 * SectorSize;
33 for (i = 0; i < 16; i++)
34 {
35 if (!FsRecReadBlock(DeviceObject,
36 &Offset,
37 SectorSize,
38 SectorSize,
39 (PVOID *)&VolumeStructDesc,
40 NULL))
41 {
42 break;
43 }
44
45 if (!strncmp((const char*)VolumeStructDesc->Ident,
46 VSD_STD_ID_BEA01,
47 VSD_STD_ID_LEN))
48 {
49 DPRINT("BEA01 found\n");
50 }
51
52 if (!strncmp((const char*)VolumeStructDesc->Ident,
53 VSD_STD_ID_NSR03,
54 VSD_STD_ID_LEN))
55 {
56 DPRINT("NSR03 found\n");
57 ret = TRUE;
58 }
59
60 if (!strncmp((const char*)VolumeStructDesc->Ident,
61 VSD_STD_ID_NSR02,
62 VSD_STD_ID_LEN))
63 {
64 DPRINT("NSR02 found\n");
65 ret = TRUE;
66 }
67
68 if (!strncmp((const char*)VolumeStructDesc->Ident,
69 VSD_STD_ID_TEA01,
70 VSD_STD_ID_LEN))
71 {
72 DPRINT("TEA01 found\n");
73 }
74
75 if (!strncmp((const char*)VolumeStructDesc->Ident,
76 VSD_STD_ID_CD001,
77 VSD_STD_ID_LEN))
78 {
79 DPRINT("CD001 found\n");
80 }
81
82 if (!strncmp((const char*)VolumeStructDesc->Ident,
83 VSD_STD_ID_CDW02,
84 VSD_STD_ID_LEN))
85 {
86 DPRINT("CDW02 found\n");
87 }
88
89 if (!strncmp((const char*)VolumeStructDesc->Ident,
90 VSD_STD_ID_BOOT2,
91 VSD_STD_ID_LEN))
92 {
93 DPRINT("BOOT2 found\n");
94 }
95
96 Offset.QuadPart += SectorSize;
97 }
98
99 if (VolumeStructDesc)
100 ExFreePool(VolumeStructDesc);
101 return ret;
102 }
103
104 NTSTATUS
105 NTAPI
106 FsRecUdfsFsControl(IN PDEVICE_OBJECT DeviceObject,
107 IN PIRP Irp)
108 {
109 PIO_STACK_LOCATION Stack;
110 NTSTATUS Status;
111 PDEVICE_OBJECT MountDevice;
112 ULONG SectorSize;
113 PAGED_CODE();
114
115 /* Get the I/O Stack and check the function type */
116 Stack = IoGetCurrentIrpStackLocation(Irp);
117 switch (Stack->MinorFunction)
118 {
119 case IRP_MN_MOUNT_VOLUME:
120
121 /* Assume failure */
122 Status = STATUS_UNRECOGNIZED_VOLUME;
123
124 /* Get the device object and request the sector size */
125 MountDevice = Stack->Parameters.MountVolume.DeviceObject;
126 if (FsRecGetDeviceSectorSize(MountDevice, &SectorSize))
127 {
128 /* Check if it's an actual UDF volume */
129 if (FsRecIsUdfsVolume(MountDevice, SectorSize))
130 {
131 /* It is! */
132 Status = STATUS_FS_DRIVER_REQUIRED;
133 }
134 }
135
136 break;
137
138 case IRP_MN_LOAD_FILE_SYSTEM:
139
140 /* Load the file system */
141 Status = FsRecLoadFileSystem(DeviceObject,
142 L"\\Registry\\Machine\\System\\CurrentControlSet\\Services\\Udfs");
143 break;
144
145 default:
146
147 /* Invalid request */
148 Status = STATUS_INVALID_DEVICE_REQUEST;
149 }
150
151 /* Return Status */
152 return Status;
153 }
154
155 /* EOF */