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1609 lines
44 KiB
1609 lines
44 KiB
/*++
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Copyright (c) 1989 Microsoft Corporation
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Module Name:
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exinit.c
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Abstract:
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The module contains the the initialization code for the executive
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component. It also contains the display string and shutdown system
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services.
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Author:
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Steve Wood (stevewo) 31-Mar-1989
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Revision History:
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--*/
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#include "exp.h"
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#include <zwapi.h>
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//
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// Define forward referenced prototypes.
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//
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ULONG
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static
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ExpSingleStringCheck(
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LPWSTR s1
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);
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VOID
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static
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ExpStringCheck(
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LPWSTR s1,
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LPWSTR s2,
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LPWSTR s3,
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LPWSTR s4,
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LPWSTR s5,
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LPWSTR s6,
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LPWSTR s7,
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LPWSTR s8
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);
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#ifdef ALLOC_PRAGMA
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#pragma alloc_text(INIT, ExInitSystem)
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#pragma alloc_text(INIT, ExpInitSystemPhase0)
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#pragma alloc_text(INIT, ExpInitSystemPhase1)
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#pragma alloc_text(INIT, ExInitSystemPhase2)
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#pragma alloc_text(INIT, ExComputeTickCountMultiplier)
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#pragma alloc_text(INIT, ExpWatchProductTypeInitialization)
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#pragma alloc_text(INIT, ExpSingleStringCheck)
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#pragma alloc_text(INIT, ExpStringCheck)
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#pragma alloc_text(PAGE, NtDisplayString)
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#pragma alloc_text(PAGE, NtShutdownSystem)
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#pragma alloc_text(PAGE, ExpWatchProductTypeWork)
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#pragma alloc_text(PAGE, ExpWatchSystemPrefixWork)
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#endif
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//
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// Tick count multiplier.
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//
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ULONG ExpTickCountMultiplier;
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#define EXP_ST_SETUP 0
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#define EXP_ST_SETUP_TYPE 1
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#define EXP_ST_SYSTEM_PREFIX 2
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#define EXP_ST_PRODUCT_OPTIONS 3
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#define EXP_ST_PRODUCT_TYPE 4
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#define EXP_ST_LANMANNT 5
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#define EXP_ST_SERVERNT 6
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#define EXP_ST_WINNT 7
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LPWSTR
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static
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ExpStrings[8] = {
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L"\\Registry\\Machine\\System\\Setup",
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L"SetupType",
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L"SystemPrefix",
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L"\\Registry\\Machine\\System\\CurrentControlSet\\Control\\ProductOptions",
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L"ProductType",
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L"LanmanNT",
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L"ServerNT",
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L"WinNT"
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};
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//
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// Variable that controls whether it is too late for hard error popups.
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//
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ULONG
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static
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ExpSingleStringCheck(
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LPWSTR s1
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)
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{
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unsigned long crc32_table[256] = { /* lookup table */
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0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F,
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0xE963A535, 0x9E6495A3, 0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988,
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0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91, 0x1DB71064, 0x6AB020F2,
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0xF3B97148, 0x84BE41DE, 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7,
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0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC, 0x14015C4F, 0x63066CD9,
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0xFA0F3D63, 0x8D080DF5, 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172,
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0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B, 0x35B5A8FA, 0x42B2986C,
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0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59,
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0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116, 0x21B4F4B5, 0x56B3C423,
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0xCFBA9599, 0xB8BDA50F, 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924,
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0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D, 0x76DC4190, 0x01DB7106,
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0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433,
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0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, 0x7F6A0DBB, 0x086D3D2D,
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0x91646C97, 0xE6635C01, 0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E,
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0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457, 0x65B0D9C6, 0x12B7E950,
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0x8BBEB8EA, 0xFCB9887C, 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65,
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0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2, 0x4ADFA541, 0x3DD895D7,
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0xA4D1C46D, 0xD3D6F4FB, 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0,
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0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9, 0x5005713C, 0x270241AA,
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0xBE0B1010, 0xC90C2086, 0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F,
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0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, 0x2EB40D81,
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0xB7BD5C3B, 0xC0BA6CAD, 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A,
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0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683, 0xE3630B12, 0x94643B84,
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0x0D6D6A3E, 0x7A6A5AA8, 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1,
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0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE, 0xF762575D, 0x806567CB,
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0x196C3671, 0x6E6B06E7, 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC,
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0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5, 0xD6D6A3E8, 0xA1D1937E,
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0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B,
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0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60, 0xDF60EFC3, 0xA867DF55,
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0x316E8EEF, 0x4669BE79, 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236,
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0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F, 0xC5BA3BBE, 0xB2BD0B28,
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0x2BB45A92, 0x5CB36A04, 0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D,
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0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, 0x9C0906A9, 0xEB0E363F,
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0x72076785, 0x05005713, 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38,
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0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21, 0x86D3D2D4, 0xF1D4E242,
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0x68DDB3F8, 0x1FDA836E, 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777,
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0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, 0x8F659EFF, 0xF862AE69,
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0x616BFFD3, 0x166CCF45, 0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2,
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0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB, 0xAED16A4A, 0xD9D65ADC,
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0x40DF0B66, 0x37D83BF0, 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9,
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0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6, 0xBAD03605, 0xCDD70693,
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0x54DE5729, 0x23D967BF, 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94,
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0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D};
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UNICODE_STRING s;
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ULONG crc;
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unsigned char *buf;
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int i,j,k;
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RtlInitUnicodeString( &s, s1 );
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i = s.Length;
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buf = (unsigned char *)s.Buffer;
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crc = 0xFFFFFFFF; /* preconditioning sets non zero value */
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for(j=0;j<i;j++){
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k=(crc ^ buf[j]) & 0x000000FFL;
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crc=((crc >> 8) & 0x00FFFFFFL) ^ crc32_table[k];
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}
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crc=~crc; /* postconditioning */
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return crc;
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}
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ULONG KdDumpEnableOffset;
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VOID
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static
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ExpStringCheck(
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LPWSTR s1,
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LPWSTR s2,
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LPWSTR s3,
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LPWSTR s4,
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LPWSTR s5,
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LPWSTR s6,
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LPWSTR s7,
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LPWSTR s8
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)
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{
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ULONG Master[8] = {
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0xf54d3d83,
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0x6d3cbfaf,
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0x1418a31c,
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0xe7535704,
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0x720e8093,
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0x1aec49bf,
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0x4d8f8978,
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0xe00497a3
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};
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ULONG StringCheckV[8];
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int i;
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StringCheckV[0] = ExpSingleStringCheck(s1);
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StringCheckV[1] = ExpSingleStringCheck(s2);
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StringCheckV[2] = ExpSingleStringCheck(s3);
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StringCheckV[3] = ExpSingleStringCheck(s4);
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StringCheckV[4] = ExpSingleStringCheck(s5);
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StringCheckV[5] = ExpSingleStringCheck(s6);
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StringCheckV[6] = ExpSingleStringCheck(s7);
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StringCheckV[7] = ExpSingleStringCheck(s8);
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for ( i=0;i<8;i++ ) {
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if ( StringCheckV[i] != Master[i] ) {
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KdDumpEnableOffset = 8;
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}
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}
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}
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extern BOOLEAN ExpTooLateForErrors;
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BOOLEAN
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ExInitSystem (
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VOID
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)
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/*++
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Routine Description:
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This function initializes the executive component of the NT system.
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It will perform Phase 0 or Phase 1 initialization as appropriate.
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Arguments:
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None.
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Return Value:
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A value of TRUE is returned if the initialization is success. Otherwise
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a value of FALSE is returned.
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--*/
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{
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switch ( InitializationPhase ) {
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case 0:
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ExpStringCheck(
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ExpStrings[EXP_ST_SETUP],
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ExpStrings[EXP_ST_SETUP_TYPE],
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ExpStrings[EXP_ST_SYSTEM_PREFIX],
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ExpStrings[EXP_ST_PRODUCT_OPTIONS],
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ExpStrings[EXP_ST_PRODUCT_TYPE],
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ExpStrings[EXP_ST_LANMANNT],
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ExpStrings[EXP_ST_SERVERNT],
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ExpStrings[EXP_ST_WINNT]
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);
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return ExpInitSystemPhase0();
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case 1:
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return ExpInitSystemPhase1();
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default:
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KeBugCheck(UNEXPECTED_INITIALIZATION_CALL);
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}
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}
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BOOLEAN
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ExpInitSystemPhase0(
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VOID
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)
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/*++
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Routine Description:
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This function performs Phase 0 initialization of the executive component
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of the NT system.
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Arguments:
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None.
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Return Value:
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A value of TRUE is returned if the initialization is success. Otherwise
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a value of FALSE is returned.
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--*/
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{
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ULONG Index;
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BOOLEAN Initialized = TRUE;
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PSMALL_POOL_LOOKASIDE Lookaside;
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//
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// Initialize Resource objects, currently required during SE
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// Phase 0 initialization.
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//
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if (ExpResourceInitialization() == FALSE) {
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Initialized = FALSE;
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KdPrint(("Executive: Resource initialization failed\n"));
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}
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//
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// Initialize query/set environment variable synchronization fast
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// mutex.
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//
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ExInitializeFastMutex(&ExpEnvironmentLock);
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//
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// Initialize the paged and nonpaged small pool lookaside structures.
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//
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for (Index = 0; Index < POOL_SMALL_LISTS; Index += 1) {
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Lookaside = &ExpSmallNPagedPoolLookasideLists[Index];
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Lookaside->SListHead.Next.Next = NULL;
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Lookaside->SListHead.Depth = 0;
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Lookaside->SListHead.Sequence = 0;
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Lookaside->Depth = 2;
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Lookaside->MaximumDepth = 256;
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Lookaside->TotalAllocates = 0;
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Lookaside->AllocateHits = 0;
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Lookaside->TotalFrees = 0;
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Lookaside->FreeHits = 0;
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Lookaside->LastTotalAllocates = 0;
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Lookaside->LastAllocateHits = 0;
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KeInitializeSpinLock(&Lookaside->Lock);
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#if !defined(_PPC_)
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Lookaside = &ExpSmallPagedPoolLookasideLists[Index];
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Lookaside->SListHead.Next.Next = NULL;
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Lookaside->SListHead.Depth = 0;
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Lookaside->SListHead.Sequence = 0;
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Lookaside->Depth = 2;
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Lookaside->MaximumDepth = 256;
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Lookaside->TotalAllocates = 0;
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Lookaside->AllocateHits = 0;
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Lookaside->TotalFrees = 0;
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Lookaside->FreeHits = 0;
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Lookaside->LastTotalAllocates = 0;
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Lookaside->LastAllocateHits = 0;
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Lookaside->Lock = 0;
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#endif
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}
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//
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// Set the maximum depth of small nonpaged and paged lookaside structures
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// which get a larger maximum than the derfault.
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//
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ExpSmallNPagedPoolLookasideLists[0].MaximumDepth = 512;
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ExpSmallNPagedPoolLookasideLists[1].MaximumDepth = 512;
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#if !defined(_PPC_)
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ExpSmallPagedPoolLookasideLists[0].MaximumDepth = 512;
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ExpSmallPagedPoolLookasideLists[1].MaximumDepth = 512;
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#endif
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//
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// Initialize the nonpaged and paged system lookaside lists.
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//
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InitializeListHead(&ExNPagedLookasideListHead);
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KeInitializeSpinLock(&ExNPagedLookasideLock);
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InitializeListHead(&ExPagedLookasideListHead);
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KeInitializeSpinLock(&ExPagedLookasideLock);
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return Initialized;
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}
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#define MAX_PRODUCT_TYPE_BYTES 18 // lanmannt, servernt, winnt are only options
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HANDLE ExpProductTypeKey;
|
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PKEY_VALUE_PARTIAL_INFORMATION ExpProductTypeValueInfo;
|
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ULONG ExpProductTypeChangeBuffer;
|
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ULONG ExpSystemPrefixChangeBuffer;
|
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IO_STATUS_BLOCK ExpProductTypeIoSb;
|
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IO_STATUS_BLOCK ExpSystemPrefixIoSb;
|
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WORK_QUEUE_ITEM ExpWatchProductTypeWorkItem;
|
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WORK_QUEUE_ITEM ExpWatchSystemPrefixWorkItem;
|
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BOOLEAN ExpSetupModeDetected;
|
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BOOLEAN ExpInTextModeSetup;
|
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|
|
|
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VOID
|
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static
|
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ExpWatchProductTypeWork(
|
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IN PVOID Context
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)
|
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{
|
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UNICODE_STRING KeyName;
|
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UNICODE_STRING KeyValueName;
|
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OBJECT_ATTRIBUTES ObjectAttributes;
|
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NTSTATUS Status;
|
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HANDLE Thread;
|
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//
|
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// our change notify triggered. Simply rewrite the boot time product type
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// back out to the registry
|
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//
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|
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NtClose(ExpProductTypeKey);
|
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|
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RtlInitUnicodeString(&KeyName,ExpStrings[EXP_ST_PRODUCT_OPTIONS]);
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|
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InitializeObjectAttributes( &ObjectAttributes,
|
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&KeyName,
|
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OBJ_CASE_INSENSITIVE,
|
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NULL,
|
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NULL
|
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);
|
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Status = NtOpenKey( &ExpProductTypeKey,
|
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KEY_READ | KEY_NOTIFY | KEY_WRITE,
|
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&ObjectAttributes
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);
|
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|
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if ( !NT_SUCCESS(Status) ) {
|
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KeBugCheckEx(
|
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SYSTEM_LICENSE_VIOLATION,
|
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13,
|
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(ULONG)Status,
|
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0,
|
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0
|
|
);
|
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return;
|
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}
|
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|
|
|
|
|
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if ( !ExpSetupModeDetected ) {
|
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|
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RtlInitUnicodeString( &KeyValueName, ExpStrings[EXP_ST_PRODUCT_TYPE]);
|
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Status = NtSetValueKey( ExpProductTypeKey,
|
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&KeyValueName,
|
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0,
|
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ExpProductTypeValueInfo->Type,
|
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&ExpProductTypeValueInfo->Data,
|
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ExpProductTypeValueInfo->DataLength
|
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);
|
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if ( !NT_SUCCESS(Status) ) {
|
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KeBugCheckEx(
|
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SYSTEM_LICENSE_VIOLATION,
|
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17,
|
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(ULONG)Status,
|
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0,
|
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0
|
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);
|
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}
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|
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NtFlushKey(ExpProductTypeKey);
|
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}
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|
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Status = NtNotifyChangeKey(
|
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ExpProductTypeKey,
|
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NULL,
|
|
(PIO_APC_ROUTINE)&ExpWatchProductTypeWorkItem,
|
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(PVOID)DelayedWorkQueue,
|
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&ExpProductTypeIoSb,
|
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REG_LEGAL_CHANGE_FILTER,
|
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FALSE,
|
|
&ExpProductTypeChangeBuffer,
|
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sizeof(ExpProductTypeChangeBuffer),
|
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TRUE
|
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);
|
|
|
|
if ( !NT_SUCCESS(Status) ) {
|
|
KeBugCheckEx(
|
|
SYSTEM_LICENSE_VIOLATION,
|
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17,
|
|
(ULONG)Status,
|
|
1,
|
|
0
|
|
);
|
|
}
|
|
|
|
if ( !ExpSetupModeDetected ) {
|
|
Status = PsCreateSystemThread(&Thread,
|
|
THREAD_ALL_ACCESS,
|
|
NULL,
|
|
0L,
|
|
NULL,
|
|
ExpExpirationThread,
|
|
(PVOID)STATUS_LICENSE_VIOLATION
|
|
);
|
|
|
|
if (NT_SUCCESS(Status)) {
|
|
ZwClose(Thread);
|
|
}
|
|
}
|
|
}
|
|
|
|
extern BOOLEAN ExpShuttingDown;
|
|
|
|
VOID
|
|
static
|
|
ExpWatchSystemPrefixWork(
|
|
IN PVOID Context
|
|
)
|
|
{
|
|
UNICODE_STRING KeyName;
|
|
UNICODE_STRING KeyValueName;
|
|
OBJECT_ATTRIBUTES ObjectAttributes;
|
|
NTSTATUS Status;
|
|
HANDLE Thread;
|
|
|
|
if ( !ExpShuttingDown ) {
|
|
|
|
//
|
|
// our change notify triggered. Simply rewrite the boot time product type
|
|
// back out to the registry
|
|
//
|
|
|
|
NtClose(ExpSetupKey);
|
|
|
|
RtlInitUnicodeString(&KeyName,ExpStrings[EXP_ST_SETUP] );
|
|
|
|
InitializeObjectAttributes( &ObjectAttributes,
|
|
&KeyName,
|
|
OBJ_CASE_INSENSITIVE,
|
|
NULL,
|
|
NULL
|
|
);
|
|
|
|
Status = NtOpenKey( &ExpSetupKey,
|
|
KEY_READ | KEY_NOTIFY | KEY_WRITE,
|
|
&ObjectAttributes
|
|
);
|
|
|
|
if ( !NT_SUCCESS(Status) ) {
|
|
KeBugCheckEx(
|
|
SYSTEM_LICENSE_VIOLATION,
|
|
15,
|
|
(ULONG)Status,
|
|
0,
|
|
0
|
|
);
|
|
return;
|
|
}
|
|
|
|
|
|
|
|
if ( !ExpSetupModeDetected ) {
|
|
|
|
RtlInitUnicodeString( &KeyValueName,ExpStrings[EXP_ST_SYSTEM_PREFIX]);
|
|
|
|
Status = NtSetValueKey( ExpSetupKey,
|
|
&KeyValueName,
|
|
0,
|
|
REG_BINARY,
|
|
&ExpSetupSystemPrefix,
|
|
sizeof(ExpSetupSystemPrefix)
|
|
);
|
|
if ( !NT_SUCCESS(Status) ) {
|
|
KeBugCheckEx(
|
|
SYSTEM_LICENSE_VIOLATION,
|
|
16,
|
|
(ULONG)Status,
|
|
0,
|
|
0
|
|
);
|
|
}
|
|
ZwFlushKey(ExpSetupKey);
|
|
}
|
|
|
|
Status = NtNotifyChangeKey(
|
|
ExpSetupKey,
|
|
NULL,
|
|
(PIO_APC_ROUTINE)&ExpWatchSystemPrefixWorkItem,
|
|
(PVOID)DelayedWorkQueue,
|
|
&ExpSystemPrefixIoSb,
|
|
REG_LEGAL_CHANGE_FILTER,
|
|
FALSE,
|
|
&ExpSystemPrefixChangeBuffer,
|
|
sizeof(ExpSystemPrefixChangeBuffer),
|
|
TRUE
|
|
);
|
|
if ( !NT_SUCCESS(Status) ) {
|
|
KeBugCheckEx(
|
|
SYSTEM_LICENSE_VIOLATION,
|
|
16,
|
|
(ULONG)Status,
|
|
1,
|
|
0
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
//
|
|
// Setup to watch changes on the product type. Main part of this effort is to get
|
|
// the boot time value of product type and do not allow it to change
|
|
//
|
|
extern POBJECT_TYPE CmpKeyObjectType;
|
|
PVOID ExpControlKey[2];
|
|
BOOLEAN
|
|
static
|
|
ExpWatchProductTypeInitialization(
|
|
VOID
|
|
)
|
|
{
|
|
UNICODE_STRING KeyName;
|
|
UNICODE_STRING KeyValueName;
|
|
OBJECT_ATTRIBUTES ObjectAttributes;
|
|
NTSTATUS Status;
|
|
ULONG DataLength;
|
|
ULONG ValueInfoBuffer[sizeof(KEY_VALUE_PARTIAL_INFORMATION)+2];
|
|
PKEY_VALUE_PARTIAL_INFORMATION ValueInfo;
|
|
PULONG SetupType;
|
|
UNICODE_STRING ProductTypeName;
|
|
UNICODE_STRING RegistryProductTypeName;
|
|
ULONG RegTypeAsUlong;
|
|
LARGE_INTEGER EvaluationTime;
|
|
ULONG NumberOfProcessors;
|
|
PVOID KeyBody;
|
|
|
|
//
|
|
// decide if we are in setup mode. Allow writes in this mode
|
|
//
|
|
|
|
ExpSystemPrefixValid = FALSE;
|
|
ExpSetupModeDetected = FALSE;
|
|
SharedUserData->ProductTypeIsValid = TRUE;
|
|
|
|
RtlInitUnicodeString(&KeyName,ExpStrings[EXP_ST_SETUP]);
|
|
|
|
InitializeObjectAttributes( &ObjectAttributes,
|
|
&KeyName,
|
|
OBJ_CASE_INSENSITIVE,
|
|
NULL,
|
|
NULL
|
|
);
|
|
|
|
Status = NtOpenKey( &ExpSetupKey,
|
|
KEY_READ | KEY_WRITE | KEY_NOTIFY,
|
|
&ObjectAttributes
|
|
);
|
|
|
|
if ( NT_SUCCESS(Status) ) {
|
|
|
|
Status = ObReferenceObjectByHandle(ExpSetupKey,
|
|
0,
|
|
CmpKeyObjectType,
|
|
KernelMode,
|
|
(PVOID *)(&KeyBody),
|
|
NULL);
|
|
if ( NT_SUCCESS(Status) ) {
|
|
ExpControlKey[0] = KeyBody;
|
|
}
|
|
else {
|
|
KeBugCheckEx(
|
|
SYSTEM_LICENSE_VIOLATION,
|
|
11,
|
|
(ULONG)Status,
|
|
0,
|
|
0
|
|
);
|
|
}
|
|
|
|
RtlInitUnicodeString( &KeyValueName, ExpStrings[EXP_ST_SETUP_TYPE]);
|
|
|
|
ValueInfo = (PKEY_VALUE_PARTIAL_INFORMATION)ValueInfoBuffer;
|
|
|
|
Status = NtQueryValueKey( ExpSetupKey,
|
|
&KeyValueName,
|
|
KeyValuePartialInformation,
|
|
ValueInfo,
|
|
sizeof(ValueInfoBuffer),
|
|
&DataLength
|
|
);
|
|
|
|
if ( NT_SUCCESS(Status) ) {
|
|
SetupType = (PULONG)&ValueInfo->Data;
|
|
|
|
//
|
|
// Set setup.h from winlogon
|
|
//
|
|
|
|
if ( *SetupType >=1 && *SetupType <= 4 ) {
|
|
SharedUserData->ProductTypeIsValid = FALSE;
|
|
ExpSetupModeDetected = TRUE;
|
|
ObDereferenceObject(ExpControlKey[0]);
|
|
ExpControlKey[0] = NULL;
|
|
}
|
|
}
|
|
else {
|
|
if ( !ExpInTextModeSetup ) {
|
|
KeBugCheckEx(
|
|
SYSTEM_LICENSE_VIOLATION,
|
|
3,
|
|
(ULONG)Status,
|
|
0,
|
|
0
|
|
);
|
|
}
|
|
}
|
|
|
|
//
|
|
// Pick up the system prefix data
|
|
//
|
|
|
|
RtlInitUnicodeString( &KeyValueName, ExpStrings[EXP_ST_SYSTEM_PREFIX]);
|
|
|
|
ValueInfo = (PKEY_VALUE_PARTIAL_INFORMATION)ValueInfoBuffer;
|
|
|
|
Status = NtQueryValueKey( ExpSetupKey,
|
|
&KeyValueName,
|
|
KeyValuePartialInformation,
|
|
ValueInfo,
|
|
sizeof(ValueInfoBuffer),
|
|
&DataLength
|
|
);
|
|
|
|
if ( NT_SUCCESS(Status) ) {
|
|
|
|
RtlCopyMemory(&ExpSetupSystemPrefix,&ValueInfo->Data,sizeof(LARGE_INTEGER));
|
|
|
|
//
|
|
// Put a change notify on the setup key that is used
|
|
// to continuously monitor SystemPrefix
|
|
|
|
|
|
if ( !ExpSetupModeDetected ) {
|
|
|
|
ExpSystemPrefixValid = TRUE;
|
|
|
|
ExInitializeWorkItem(
|
|
&ExpWatchSystemPrefixWorkItem,
|
|
ExpWatchSystemPrefixWork,
|
|
NULL
|
|
);
|
|
|
|
Status = NtNotifyChangeKey(
|
|
ExpSetupKey,
|
|
NULL,
|
|
(PIO_APC_ROUTINE)&ExpWatchSystemPrefixWorkItem,
|
|
(PVOID)DelayedWorkQueue,
|
|
&ExpSystemPrefixIoSb,
|
|
REG_LEGAL_CHANGE_FILTER,
|
|
FALSE,
|
|
&ExpSystemPrefixChangeBuffer,
|
|
sizeof(ExpSystemPrefixChangeBuffer),
|
|
TRUE
|
|
);
|
|
|
|
if ( !NT_SUCCESS(Status) ) {
|
|
|
|
//
|
|
// don't boot if change notify fails
|
|
//
|
|
|
|
KeBugCheckEx(
|
|
SYSTEM_LICENSE_VIOLATION,
|
|
9,
|
|
(ULONG)Status,
|
|
0,
|
|
0
|
|
);
|
|
return FALSE;
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
if ( !ExpInTextModeSetup ) {
|
|
KeBugCheckEx(
|
|
SYSTEM_LICENSE_VIOLATION,
|
|
4,
|
|
(ULONG)Status,
|
|
0,
|
|
0
|
|
);
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
|
|
//
|
|
// open of setup key failed. This is only allowed while in textmode setup
|
|
//
|
|
|
|
if ( !ExpInTextModeSetup ) {
|
|
KeBugCheckEx(
|
|
SYSTEM_LICENSE_VIOLATION,
|
|
2,
|
|
(ULONG)Status,
|
|
0,
|
|
0
|
|
);
|
|
}
|
|
|
|
|
|
|
|
}
|
|
|
|
ExInitializeWorkItem(&ExpWatchProductTypeWorkItem, ExpWatchProductTypeWork, NULL);
|
|
|
|
RtlInitUnicodeString(&KeyName,ExpStrings[EXP_ST_PRODUCT_OPTIONS]);
|
|
|
|
InitializeObjectAttributes( &ObjectAttributes,
|
|
&KeyName,
|
|
OBJ_CASE_INSENSITIVE,
|
|
NULL,
|
|
NULL
|
|
);
|
|
Status = NtOpenKey( &ExpProductTypeKey,
|
|
KEY_READ | KEY_NOTIFY | KEY_WRITE,
|
|
&ObjectAttributes
|
|
);
|
|
|
|
if ( !NT_SUCCESS(Status) ) {
|
|
if ( ExpSetupModeDetected || ExpInTextModeSetup ) {
|
|
return FALSE;
|
|
}
|
|
else {
|
|
|
|
//
|
|
// don't boot with missing product type post setup !
|
|
//
|
|
|
|
KeBugCheckEx(
|
|
SYSTEM_LICENSE_VIOLATION,
|
|
6,
|
|
(ULONG)Status,
|
|
0,
|
|
0
|
|
);
|
|
|
|
|
|
}
|
|
}
|
|
|
|
if ( !ExpSetupModeDetected && !ExpInTextModeSetup ) {
|
|
|
|
Status = ObReferenceObjectByHandle(ExpProductTypeKey,
|
|
0,
|
|
CmpKeyObjectType,
|
|
KernelMode,
|
|
(PVOID *)(&KeyBody),
|
|
NULL);
|
|
if ( NT_SUCCESS(Status) ) {
|
|
ExpControlKey[1] = KeyBody;
|
|
}
|
|
else {
|
|
KeBugCheckEx(
|
|
SYSTEM_LICENSE_VIOLATION,
|
|
12,
|
|
(ULONG)Status,
|
|
0,
|
|
0
|
|
);
|
|
}
|
|
}
|
|
|
|
RtlInitUnicodeString( &KeyValueName, ExpStrings[EXP_ST_PRODUCT_TYPE]);
|
|
|
|
ExpProductTypeValueInfo = ExAllocatePool(PagedPool,sizeof(*ExpProductTypeValueInfo)+MAX_PRODUCT_TYPE_BYTES);
|
|
if ( !ExpProductTypeValueInfo ) {
|
|
return FALSE;
|
|
}
|
|
|
|
Status = NtQueryValueKey( ExpProductTypeKey,
|
|
&KeyValueName,
|
|
KeyValuePartialInformation,
|
|
ExpProductTypeValueInfo,
|
|
sizeof(*ExpProductTypeValueInfo)+MAX_PRODUCT_TYPE_BYTES,
|
|
&DataLength
|
|
);
|
|
|
|
if ( !NT_SUCCESS(Status) ) {
|
|
if ( ExpSetupModeDetected || ExpInTextModeSetup ) {
|
|
return FALSE;
|
|
}
|
|
else {
|
|
|
|
//
|
|
// don't boot if product type can not be read
|
|
//
|
|
|
|
KeBugCheckEx(
|
|
SYSTEM_LICENSE_VIOLATION,
|
|
7,
|
|
(ULONG)Status,
|
|
0,
|
|
0
|
|
);
|
|
}
|
|
}
|
|
|
|
//
|
|
// Isolate product type bit in SystemPrefix. If product type indicates workstation
|
|
// then product type had better be WinNt, Otherwise product type
|
|
// can be ServerNT or LanmanNT
|
|
//
|
|
// Note that ExpSystemPrefixValid is only set to true if we are not in
|
|
// setup mode and we were able to read the system prefix data
|
|
//
|
|
|
|
if ( ExpSystemPrefixValid ) {
|
|
|
|
RegistryProductTypeName.Buffer = (PWCHAR)&ExpProductTypeValueInfo->Data[0];
|
|
|
|
RtlCopyMemory(&RegTypeAsUlong,RegistryProductTypeName.Buffer,sizeof(ULONG));
|
|
|
|
//
|
|
// Compute Licensed Processors
|
|
//
|
|
|
|
NumberOfProcessors = ExpSetupSystemPrefix.LowPart;
|
|
NumberOfProcessors = NumberOfProcessors >> 5;
|
|
NumberOfProcessors = ~NumberOfProcessors;
|
|
NumberOfProcessors = NumberOfProcessors & 0x0000001f;
|
|
NumberOfProcessors++;
|
|
|
|
if ( ExpSetupSystemPrefix.HighPart & 0x04000000 ) {
|
|
|
|
|
|
//
|
|
// System is some form of NTS. Make sure LicensedProcessors is
|
|
// set correctly. If it is less than 4, then tampering occured.
|
|
// Do not boot
|
|
//
|
|
|
|
if ( NumberOfProcessors < 4 ) {
|
|
|
|
//
|
|
// NTS systems should always have 4 or more configured
|
|
// processors
|
|
//
|
|
|
|
KeBugCheckEx(
|
|
SYSTEM_LICENSE_VIOLATION,
|
|
10,
|
|
(ULONG)NumberOfProcessors,
|
|
0,
|
|
0
|
|
);
|
|
|
|
}
|
|
|
|
|
|
RtlInitUnicodeString(&ProductTypeName,ExpStrings[EXP_ST_LANMANNT]);
|
|
|
|
RegistryProductTypeName.Length = ProductTypeName.Length;
|
|
RegistryProductTypeName.MaximumLength = ProductTypeName.Length;
|
|
|
|
if ( !RtlEqualUnicodeString(&ProductTypeName,&RegistryProductTypeName,FALSE) ) {
|
|
RtlInitUnicodeString(&ProductTypeName,ExpStrings[EXP_ST_SERVERNT]);
|
|
if ( !RtlEqualUnicodeString(&ProductTypeName,&RegistryProductTypeName,FALSE) ) {
|
|
KeBugCheckEx(
|
|
SYSTEM_LICENSE_VIOLATION,
|
|
0,
|
|
1,
|
|
(ExpSetupSystemPrefix.HighPart & 0x04000000) << 3,
|
|
RegTypeAsUlong
|
|
);
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
|
|
RtlInitUnicodeString(&ProductTypeName,ExpStrings[EXP_ST_WINNT]);
|
|
|
|
RegistryProductTypeName.Length = ProductTypeName.Length;
|
|
RegistryProductTypeName.MaximumLength = ProductTypeName.Length;
|
|
|
|
if ( !RtlEqualUnicodeString(&ProductTypeName,&RegistryProductTypeName,FALSE) ) {
|
|
KeBugCheckEx(
|
|
SYSTEM_LICENSE_VIOLATION,
|
|
0,
|
|
0,
|
|
(ExpSetupSystemPrefix.HighPart & 0x04000000) << 3,
|
|
RegTypeAsUlong
|
|
);
|
|
}
|
|
}
|
|
|
|
//
|
|
// Check to see if this is an evaluation unit that might have been
|
|
// tampered with
|
|
//
|
|
|
|
EvaluationTime.QuadPart = ExpSetupSystemPrefix.QuadPart >> 13;
|
|
if ( EvaluationTime.LowPart != ExpNtExpirationData[1] ) {
|
|
KeBugCheckEx(
|
|
SYSTEM_LICENSE_VIOLATION,
|
|
1,
|
|
EvaluationTime.LowPart,
|
|
(ExpSetupSystemPrefix.HighPart & 0x04000000) << 3,
|
|
ExpNtExpirationData[1]
|
|
);
|
|
}
|
|
|
|
#if !defined(NT_UP)
|
|
|
|
//
|
|
// Make sure LicensedProcessors exists, and matches the licensed processor
|
|
// count stored in the system prefix
|
|
//
|
|
|
|
if ( KeLicensedProcessors != NumberOfProcessors ) {
|
|
KeBugCheckEx(
|
|
SYSTEM_LICENSE_VIOLATION,
|
|
5,
|
|
ExpSetupSystemPrefix.LowPart,
|
|
KeLicensedProcessors,
|
|
NumberOfProcessors
|
|
);
|
|
}
|
|
|
|
#endif // NT_UP
|
|
|
|
}
|
|
|
|
Status = NtNotifyChangeKey(
|
|
ExpProductTypeKey,
|
|
NULL,
|
|
(PIO_APC_ROUTINE)&ExpWatchProductTypeWorkItem,
|
|
(PVOID)DelayedWorkQueue,
|
|
&ExpProductTypeIoSb,
|
|
REG_LEGAL_CHANGE_FILTER,
|
|
FALSE,
|
|
&ExpProductTypeChangeBuffer,
|
|
sizeof(ExpProductTypeChangeBuffer),
|
|
TRUE
|
|
);
|
|
|
|
if ( !NT_SUCCESS(Status) ) {
|
|
if ( ExpSetupModeDetected || ExpInTextModeSetup ) {
|
|
return FALSE;
|
|
}
|
|
else {
|
|
|
|
//
|
|
// don't boot if change notify fails
|
|
//
|
|
|
|
KeBugCheckEx(
|
|
SYSTEM_LICENSE_VIOLATION,
|
|
8,
|
|
(ULONG)Status,
|
|
0,
|
|
0
|
|
);
|
|
}
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
|
|
BOOLEAN
|
|
ExpInitSystemPhase1(
|
|
VOID
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This function performs Phase 1 initializaion of the executive component
|
|
of the NT system.
|
|
|
|
Arguments:
|
|
|
|
None.
|
|
|
|
Return Value:
|
|
|
|
A value of TRUE is returned if the initialization is success. Otherwise
|
|
a value of FALSE is returned.
|
|
|
|
--*/
|
|
|
|
{
|
|
|
|
BOOLEAN Initialized = TRUE;
|
|
|
|
//
|
|
// Initialize the ATOM package
|
|
//
|
|
|
|
RtlInitializeAtomPackage( 'motA' );
|
|
|
|
//
|
|
// Initialize the worker thread.
|
|
//
|
|
|
|
if (ExpWorkerInitialization() == FALSE) {
|
|
Initialized = FALSE;
|
|
KdPrint(("Executive: Worker thread initialization failed\n"));
|
|
}
|
|
|
|
//
|
|
// Initialize the executive objects.
|
|
//
|
|
|
|
if (ExpEventInitialization() == FALSE) {
|
|
Initialized = FALSE;
|
|
KdPrint(("Executive: Event initialization failed\n"));
|
|
}
|
|
|
|
if (ExpEventPairInitialization() == FALSE) {
|
|
Initialized = FALSE;
|
|
KdPrint(("Executive: Event Pair initialization failed\n"));
|
|
}
|
|
|
|
if (ExpMutantInitialization() == FALSE) {
|
|
Initialized = FALSE;
|
|
KdPrint(("Executive: Mutant initialization failed\n"));
|
|
}
|
|
#ifdef _PNP_POWER_
|
|
if (ExpInitializeCallbacks() == FALSE) {
|
|
Initialized = FALSE;
|
|
KdPrint(("Executive: Callback initialization failed\n"));
|
|
}
|
|
if (ExpSysEventInitialization() == FALSE) {
|
|
Initialized = FALSE;
|
|
KdPrint(("Executive: SysEvent initialization failed\n"));
|
|
}
|
|
#endif // _PNP_POWER_
|
|
if (ExpSemaphoreInitialization() == FALSE) {
|
|
Initialized = FALSE;
|
|
KdPrint(("Executive: Semaphore initialization failed\n"));
|
|
}
|
|
|
|
if (ExpTimerInitialization() == FALSE) {
|
|
Initialized = FALSE;
|
|
KdPrint(("Executive: Timer initialization failed\n"));
|
|
}
|
|
|
|
if (ExpProfileInitialization() == FALSE) {
|
|
Initialized = FALSE;
|
|
KdPrint(("Executive: Profile initialization failed\n"));
|
|
}
|
|
|
|
if (ExpUuidInitialization() == FALSE) {
|
|
Initialized = FALSE;
|
|
KdPrint(("Executive: Uuid initialization failed\n"));
|
|
}
|
|
|
|
if (ExpWin32Initialization() == FALSE) {
|
|
Initialized = FALSE;
|
|
KdPrint(("Executive: Win32 initialization failed\n"));
|
|
}
|
|
|
|
return Initialized;
|
|
}
|
|
|
|
VOID
|
|
ExInitSystemPhase2(
|
|
VOID
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This function performs Phase 1 initializaion of the executive component
|
|
of the NT system.
|
|
|
|
Arguments:
|
|
|
|
None.
|
|
|
|
Return Value:
|
|
|
|
A value of TRUE is returned if the initialization is success. Otherwise
|
|
a value of FALSE is returned.
|
|
|
|
--*/
|
|
{
|
|
HAL_CALLBACKS HalCallbacks;
|
|
ULONG ReturnedLength;
|
|
ULONG NumberOfProcessors;
|
|
|
|
ExpWatchProductTypeInitialization();
|
|
|
|
//
|
|
// Initialize periodic time refresh
|
|
//
|
|
|
|
ExInitializeTimeRefresh ();
|
|
|
|
#ifdef _PNP_POWER_
|
|
//
|
|
// Initialize WorkItem for keep registry up to date with SystemInformation
|
|
//
|
|
|
|
ExInitializeWorkItem (&ExpCheckSystemInfoWorkItem, ExpCheckSystemInfoWork, NULL);
|
|
|
|
//
|
|
// Initialize lock data for SystemInfoWork
|
|
//
|
|
|
|
ExpCheckSystemInfoBusy = -1;
|
|
KeInitializeSpinLock (&ExpCheckSystemInfoLock);
|
|
|
|
//
|
|
// Get hal callbacks
|
|
//
|
|
|
|
RtlZeroMemory (&HalCallbacks, sizeof (HalCallbacks));
|
|
HalQuerySystemInformation (
|
|
HalCallbackInformation,
|
|
sizeof (HalCallbacks),
|
|
&HalCallbacks,
|
|
&ReturnedLength
|
|
);
|
|
|
|
//
|
|
// Add callback notification for whenever HalGetSystemInforamtion changes
|
|
//
|
|
|
|
if (HalCallbacks.SetSystemInformation) {
|
|
ExRegisterCallback (
|
|
HalCallbacks.SetSystemInformation,
|
|
ExpCheckSystemInformation,
|
|
(PVOID) 1
|
|
);
|
|
}
|
|
|
|
//
|
|
// Make initial notification to prime SystemInformation data in registry
|
|
//
|
|
|
|
ExpCheckSystemInformation (NULL, NULL, NULL);
|
|
#endif // _PNP_POWER_
|
|
}
|
|
|
|
|
|
|
|
ULONG
|
|
ExComputeTickCountMultiplier(
|
|
IN ULONG TimeIncrement
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This routine computes the tick count multiplier that is used to
|
|
compute a tick count value.
|
|
|
|
Arguments:
|
|
|
|
TimeIncrement - Supplies the clock increment value in 100ns units.
|
|
|
|
Return Value:
|
|
|
|
A scaled integer/fraction value is returned as the fucntion result.
|
|
|
|
--*/
|
|
|
|
{
|
|
|
|
ULONG FractionPart;
|
|
ULONG IntegerPart;
|
|
ULONG Index;
|
|
ULONG Remainder;
|
|
|
|
//
|
|
// Compute the integer part of the tick count multiplier.
|
|
//
|
|
// The integer part is the whole number of milliseconds between
|
|
// clock interrupts. It is assumed that this value is always less
|
|
// than 128.
|
|
//
|
|
|
|
IntegerPart = TimeIncrement / (10 * 1000);
|
|
|
|
//
|
|
// Compute the fraction part of the tick count multiplier.
|
|
//
|
|
// The fraction part is the fraction milliseconds between clock
|
|
// interrupts and is computed to an accuracy of 24 bits.
|
|
//
|
|
|
|
Remainder = TimeIncrement - (IntegerPart * (10 * 1000));
|
|
FractionPart = 0;
|
|
for (Index = 0; Index < 24; Index += 1) {
|
|
FractionPart <<= 1;
|
|
Remainder <<= 1;
|
|
if (Remainder >= (10 * 1000)) {
|
|
Remainder -= (10 * 1000);
|
|
FractionPart |= 1;
|
|
}
|
|
}
|
|
|
|
//
|
|
// The tick count multiplier is equal to the integer part shifted
|
|
// left by 24 bits and added to the 24 bit fraction.
|
|
//
|
|
|
|
return (IntegerPart << 24) | FractionPart;
|
|
}
|
|
|
|
NTSTATUS
|
|
NtShutdownSystem(
|
|
IN SHUTDOWN_ACTION Action
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This service is used to safely shutdown the system.
|
|
|
|
N.B. The caller must have SeShutdownPrivilege to shut down the
|
|
system.
|
|
|
|
Arguments:
|
|
|
|
Action - Supplies an action that is to be taken after having shutdown.
|
|
|
|
Return Value:
|
|
|
|
!NT_SUCCESS - The operation failed or the caller did not have appropriate
|
|
priviledges.
|
|
|
|
--*/
|
|
|
|
{
|
|
|
|
KPROCESSOR_MODE PreviousMode;
|
|
BOOLEAN Reboot;
|
|
|
|
//
|
|
// If the action to perform is not shutdown, reboot, or poweroff, then
|
|
// the action is invalid.
|
|
//
|
|
|
|
if ((Action != ShutdownNoReboot) &&
|
|
(Action != ShutdownReboot) &&
|
|
(Action != ShutdownPowerOff)) {
|
|
return STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
|
|
//
|
|
// Check to determine if the caller has the privilege to shutdown the
|
|
// system.
|
|
//
|
|
|
|
PreviousMode = KeGetPreviousMode();
|
|
if (PreviousMode != KernelMode) {
|
|
|
|
//
|
|
// Check to see if the caller has the privilege to make this
|
|
// call.
|
|
//
|
|
|
|
if (!SeSinglePrivilegeCheck( SeShutdownPrivilege, PreviousMode )) {
|
|
return STATUS_PRIVILEGE_NOT_HELD;
|
|
}
|
|
|
|
return ZwShutdownSystem(Action);
|
|
} else {
|
|
MmLockPagableCodeSection((PVOID)MmShutdownSystem);
|
|
}
|
|
|
|
//
|
|
// Prevent further hard error popups.
|
|
//
|
|
|
|
ExpTooLateForErrors = TRUE;
|
|
|
|
//
|
|
// Invoke each component of the executive that needs to be notified
|
|
// that a shutdown is about to take place.
|
|
//
|
|
|
|
Reboot = (Action != ShutdownNoReboot);
|
|
ExShutdownSystem(Reboot);
|
|
IoShutdownSystem(Reboot, 0);
|
|
CmShutdownSystem(Reboot);
|
|
MmShutdownSystem(Reboot);
|
|
IoShutdownSystem(Reboot, 1);
|
|
|
|
//
|
|
// If the system is to be rebooted or powered off, then perform the
|
|
// final operations.
|
|
//
|
|
|
|
if (Reboot != FALSE) {
|
|
DbgUnLoadImageSymbols( NULL, (PVOID)-1, 0 );
|
|
if (Action == ShutdownReboot) {
|
|
HalReturnToFirmware( HalRebootRoutine );
|
|
|
|
} else {
|
|
HalReturnToFirmware( HalPowerDownRoutine );
|
|
}
|
|
}
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
NTSTATUS
|
|
NtDisplayString(
|
|
IN PUNICODE_STRING String
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This service calls the HAL to display a string on the console.
|
|
|
|
The caller must have SeTcbPrivilege to display a message.
|
|
|
|
Arguments:
|
|
|
|
RebootAfterShutdown - A pointer to the string that is to be displayed.
|
|
|
|
Return Value:
|
|
|
|
!NT_SUCCESS - The operation failed or the caller did not have appropriate
|
|
priviledges.
|
|
|
|
--*/
|
|
|
|
{
|
|
KPROCESSOR_MODE PreviousMode;
|
|
UNICODE_STRING CapturedString;
|
|
PUCHAR StringBuffer = NULL;
|
|
PUCHAR AnsiStringBuffer = NULL;
|
|
STRING AnsiString;
|
|
|
|
//
|
|
// Check to determine if the caller has the privilege to make this
|
|
// call.
|
|
//
|
|
|
|
PreviousMode = KeGetPreviousMode();
|
|
if (!SeSinglePrivilegeCheck(SeTcbPrivilege, PreviousMode)) {
|
|
return STATUS_PRIVILEGE_NOT_HELD;
|
|
}
|
|
|
|
try {
|
|
|
|
//
|
|
// If the previous mode was user, then check the input parameters.
|
|
//
|
|
|
|
if (PreviousMode != KernelMode) {
|
|
|
|
//
|
|
// Probe and capture the input unicode string descriptor.
|
|
//
|
|
|
|
CapturedString = ProbeAndReadUnicodeString(String);
|
|
|
|
//
|
|
// If the captured string descriptor has a length of zero, then
|
|
// return success.
|
|
//
|
|
|
|
if ((CapturedString.Buffer == 0) ||
|
|
(CapturedString.MaximumLength == 0)) {
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
//
|
|
// Probe and capture the input string.
|
|
//
|
|
// N.B. Note the length is in bytes.
|
|
//
|
|
|
|
ProbeForRead(
|
|
CapturedString.Buffer,
|
|
CapturedString.MaximumLength,
|
|
sizeof(UCHAR)
|
|
);
|
|
|
|
//
|
|
// Allocate a non-paged string buffer because the buffer passed to
|
|
// HalDisplay string must be non-paged.
|
|
//
|
|
|
|
StringBuffer = ExAllocatePoolWithTag(NonPagedPool,
|
|
CapturedString.MaximumLength,
|
|
'grtS');
|
|
|
|
if ( !StringBuffer ) {
|
|
return STATUS_NO_MEMORY;
|
|
}
|
|
|
|
RtlMoveMemory(StringBuffer,
|
|
CapturedString.Buffer,
|
|
CapturedString.MaximumLength);
|
|
|
|
CapturedString.Buffer = (PWSTR)StringBuffer;
|
|
|
|
//
|
|
// Allocate a string buffer for the ansi string.
|
|
//
|
|
|
|
AnsiStringBuffer = ExAllocatePoolWithTag(NonPagedPool,
|
|
CapturedString.MaximumLength,
|
|
'grtS');
|
|
|
|
|
|
if (AnsiStringBuffer == NULL) {
|
|
ExFreePool(StringBuffer);
|
|
return STATUS_NO_MEMORY;
|
|
}
|
|
|
|
AnsiString.MaximumLength = CapturedString.MaximumLength;
|
|
AnsiString.Length = 0;
|
|
AnsiString.Buffer = AnsiStringBuffer;
|
|
|
|
//
|
|
// Transform the string to ANSI until the HAL handles unicode.
|
|
//
|
|
|
|
RtlUnicodeStringToOemString(
|
|
&AnsiString,
|
|
&CapturedString,
|
|
FALSE
|
|
);
|
|
|
|
} else {
|
|
|
|
//
|
|
// Allocate a string buffer for the ansi string.
|
|
//
|
|
|
|
AnsiStringBuffer = ExAllocatePoolWithTag(NonPagedPool,
|
|
String->MaximumLength,
|
|
'grtS');
|
|
|
|
|
|
if (AnsiStringBuffer == NULL) {
|
|
return STATUS_NO_MEMORY;
|
|
}
|
|
|
|
AnsiString.MaximumLength = String->MaximumLength;
|
|
AnsiString.Length = 0;
|
|
AnsiString.Buffer = AnsiStringBuffer;
|
|
|
|
//
|
|
// We were in kernel mode; just transform the original string.
|
|
//
|
|
|
|
RtlUnicodeStringToOemString(
|
|
&AnsiString,
|
|
String,
|
|
FALSE
|
|
);
|
|
}
|
|
|
|
HalDisplayString( AnsiString.Buffer );
|
|
|
|
//
|
|
// Free up the memory we used to store the strings.
|
|
//
|
|
|
|
if (PreviousMode != KernelMode) {
|
|
ExFreePool(StringBuffer);
|
|
}
|
|
|
|
ExFreePool(AnsiStringBuffer);
|
|
|
|
} except(EXCEPTION_EXECUTE_HANDLER) {
|
|
if (StringBuffer != NULL) {
|
|
ExFreePool(StringBuffer);
|
|
}
|
|
|
|
return GetExceptionCode();
|
|
}
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
|
|
int
|
|
ExSystemExceptionFilter( VOID )
|
|
{
|
|
return( KeGetPreviousMode() != KernelMode ? EXCEPTION_EXECUTE_HANDLER
|
|
: EXCEPTION_CONTINUE_SEARCH
|
|
);
|
|
}
|
|
|
|
|
|
|
|
NTKERNELAPI
|
|
KPROCESSOR_MODE
|
|
ExGetPreviousMode(
|
|
VOID
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Returns previous mode. This routine is exported from the kernel so
|
|
that drivers can call it, as they may have to do probling of
|
|
imbedded pointers to user structures on IOCTL calls that the I/O
|
|
system can't probe for them on the FastIo path, which does not pass
|
|
previous mode via the FastIo parameters.
|
|
|
|
Arguments:
|
|
|
|
None.
|
|
|
|
Return Value:
|
|
|
|
return-value - Either KernelMode or UserMode
|
|
|
|
--*/
|
|
|
|
{
|
|
return KeGetPreviousMode();
|
|
}
|