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fsrtlpc.c
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00001 /* 00002 * PROJECT: ReactOS Kernel 00003 * LICENSE: GPL - See COPYING in the top level directory 00004 * FILE: ntoskrnl/fsrtl/fsrtlpc.c 00005 * PURPOSE: Contains initialization and support code for the FsRtl 00006 * PROGRAMMERS: Alex Ionescu (alex.ionescu@reactos.org) 00007 */ 00008 00009 /* INCLUDES ******************************************************************/ 00010 00011 #include <ntoskrnl.h> 00012 #define NDEBUG 00013 #include <debug.h> 00014 00015 /* GLOBALS *******************************************************************/ 00016 00017 PERESOURCE FsRtlPagingIoResources; 00018 ULONG FsRtlPagingIoResourceSelector; 00019 00020 static UCHAR LegalAnsiCharacterArray[] = 00021 { 00022 0, /* CTRL+@, 0x00 */ 00023 0, /* CTRL+A, 0x01 */ 00024 0, /* CTRL+B, 0x02 */ 00025 0, /* CTRL+C, 0x03 */ 00026 0, /* CTRL+D, 0x04 */ 00027 0, /* CTRL+E, 0x05 */ 00028 0, /* CTRL+F, 0x06 */ 00029 0, /* CTRL+G, 0x07 */ 00030 0, /* CTRL+H, 0x08 */ 00031 0, /* CTRL+I, 0x09 */ 00032 0, /* CTRL+J, 0x0a */ 00033 0, /* CTRL+K, 0x0b */ 00034 0, /* CTRL+L, 0x0c */ 00035 0, /* CTRL+M, 0x0d */ 00036 0, /* CTRL+N, 0x0e */ 00037 0, /* CTRL+O, 0x0f */ 00038 0, /* CTRL+P, 0x10 */ 00039 0, /* CTRL+Q, 0x11 */ 00040 0, /* CTRL+R, 0x12 */ 00041 0, /* CTRL+S, 0x13 */ 00042 0, /* CTRL+T, 0x14 */ 00043 0, /* CTRL+U, 0x15 */ 00044 0, /* CTRL+V, 0x16 */ 00045 0, /* CTRL+W, 0x17 */ 00046 0, /* CTRL+X, 0x18 */ 00047 0, /* CTRL+Y, 0x19 */ 00048 0, /* CTRL+Z, 0x1a */ 00049 0, /* CTRL+[, 0x1b */ 00050 0, /* CTRL+\, 0x1c */ 00051 0, /* CTRL+], 0x1d */ 00052 0, /* CTRL+^, 0x1e */ 00053 0, /* CTRL+_, 0x1f */ 00054 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* ` ', 0x20 */ 00055 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `!', 0x21 */ 00056 FSRTL_WILD_CHARACTER, /* `"', 0x22 */ 00057 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `#', 0x23 */ 00058 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `$', 0x24 */ 00059 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `%', 0x25 */ 00060 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `&', 0x26 */ 00061 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `'', 0x27 */ 00062 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `(', 0x28 */ 00063 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `)', 0x29 */ 00064 FSRTL_WILD_CHARACTER, /* `*', 0x2a */ 00065 FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `+', 0x2b */ 00066 FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `,', 0x2c */ 00067 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `-', 0x2d */ 00068 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `.', 0x2e */ 00069 0, /* `/', 0x2f */ 00070 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `0', 0x30 */ 00071 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `1', 0x31 */ 00072 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `2', 0x32 */ 00073 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `3', 0x33 */ 00074 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `4', 0x34 */ 00075 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `5', 0x35 */ 00076 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `6', 0x36 */ 00077 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `7', 0x37 */ 00078 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `8', 0x38 */ 00079 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `9', 0x39 */ 00080 FSRTL_NTFS_LEGAL, /* `:', 0x3a */ 00081 FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `;', 0x3b */ 00082 FSRTL_WILD_CHARACTER, /* `<', 0x3c */ 00083 FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `=', 0x3d */ 00084 FSRTL_WILD_CHARACTER, /* `>', 0x3e */ 00085 FSRTL_WILD_CHARACTER, /* `?', 0x3f */ 00086 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `@', 0x40 */ 00087 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `A', 0x41 */ 00088 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `B', 0x42 */ 00089 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `C', 0x43 */ 00090 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `D', 0x44 */ 00091 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `E', 0x45 */ 00092 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `F', 0x46 */ 00093 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `G', 0x47 */ 00094 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `H', 0x48 */ 00095 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `I', 0x49 */ 00096 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `J', 0x4a */ 00097 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `K', 0x4b */ 00098 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `L', 0x4c */ 00099 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `M', 0x4d */ 00100 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `N', 0x4e */ 00101 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `O', 0x4f */ 00102 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `P', 0x50 */ 00103 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `Q', 0x51 */ 00104 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `R', 0x52 */ 00105 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `S', 0x53 */ 00106 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `T', 0x54 */ 00107 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `U', 0x55 */ 00108 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `V', 0x56 */ 00109 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `W', 0x57 */ 00110 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `X', 0x58 */ 00111 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `Y', 0x59 */ 00112 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `Z', 0x5a */ 00113 FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `[', 0x5b */ 00114 0, /* `\', 0x5c */ 00115 FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `]', 0x5d */ 00116 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `^', 0x5e */ 00117 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `_', 0x5f */ 00118 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* ``', 0x60 */ 00119 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `a', 0x61 */ 00120 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `b', 0x62 */ 00121 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `c', 0x63 */ 00122 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `d', 0x64 */ 00123 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `e', 0x65 */ 00124 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `f', 0x66 */ 00125 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `g', 0x67 */ 00126 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `h', 0x68 */ 00127 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `i', 0x69 */ 00128 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `j', 0x6a */ 00129 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `k', 0x6b */ 00130 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `l', 0x6c */ 00131 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `m', 0x6d */ 00132 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `n', 0x6e */ 00133 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `o', 0x6f */ 00134 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `p', 0x70 */ 00135 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `q', 0x71 */ 00136 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `r', 0x72 */ 00137 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `s', 0x73 */ 00138 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `t', 0x74 */ 00139 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `u', 0x75 */ 00140 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `v', 0x76 */ 00141 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `w', 0x77 */ 00142 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `x', 0x78 */ 00143 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `y', 0x79 */ 00144 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `z', 0x7a */ 00145 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `{', 0x7b */ 00146 0, /* `|', 0x7c */ 00147 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `}', 0x7d */ 00148 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL, /* `~', 0x7e */ 00149 FSRTL_FAT_LEGAL | FSRTL_HPFS_LEGAL | FSRTL_NTFS_LEGAL /* 0x7f */ 00150 }; 00151 00152 PUCHAR FsRtlLegalAnsiCharacterArray = LegalAnsiCharacterArray; 00153 00154 /* PRIVATE FUNCTIONS *********************************************************/ 00155 00156 BOOLEAN 00157 NTAPI 00158 INIT_FUNCTION 00159 FsRtlInitSystem(VOID) 00160 { 00161 ULONG i; 00162 00163 /* Initialize the list for granted locks */ 00164 ExInitializePagedLookasideList(&FsRtlFileLockLookasideList, 00165 NULL, 00166 NULL, 00167 0, 00168 sizeof(FILE_LOCK), 00169 IFS_POOL_TAG, 00170 0); 00171 00172 FsRtlInitializeLargeMcbs(); 00173 00174 /* Allocate the Resource Buffer */ 00175 FsRtlPagingIoResources = FsRtlAllocatePoolWithTag(NonPagedPool, 00176 FSRTL_MAX_RESOURCES * 00177 sizeof(ERESOURCE), 00178 'eRsF'); 00179 00180 /* Initialize the Resources */ 00181 for (i = 0; i < FSRTL_MAX_RESOURCES; i++) 00182 { 00183 ExInitializeResource(&FsRtlPagingIoResources[i]); 00184 } 00185 00186 return TRUE; 00187 } 00188 00189 /* PUBLIC FUNCTIONS **********************************************************/ 00190 00191 /*++ 00192 * @name FsRtlAllocateResource 00193 * @implemented NT 4.0 00194 * 00195 * The FsRtlAllocateResource routine returns a pre-initialized ERESOURCE 00196 * for use by a File System Driver. 00197 * 00198 * @return A Pointer to a pre-initialized ERESOURCE. 00199 * 00200 * @remarks The File System Library only provides up to 16 Resources. 00201 * 00202 *--*/ 00203 PERESOURCE 00204 NTAPI 00205 FsRtlAllocateResource(VOID) 00206 { 00207 PAGED_CODE(); 00208 00209 /* Return a preallocated ERESOURCE */ 00210 return &FsRtlPagingIoResources[FsRtlPagingIoResourceSelector++ % 00211 FSRTL_MAX_RESOURCES]; 00212 } 00213
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