49 lines
1.0 KiB
C
49 lines
1.0 KiB
C
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//BuildpDES.c
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//<2F>5/18/02 David "Potatoswatter" Krauss
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#include <SCSI.h>
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extern UInt16 DriverChecksum( Handle dH ) {
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UInt32 bcnt;
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UInt32 sum;
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sum = 0;
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for ( bcnt = 0; bcnt < GetHandleSize( dH ); bcnt++ ) {
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sum += (UInt8) *( *dH + bcnt );
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sum <<= 1;
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if ( sum & 0x10000 ) sum |= 1;
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}
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if ( (UInt16) sum == 0 ) {
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sum = -1;
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PtrToXHand( &sum, dH, 1 );
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return DriverChecksum( dH );
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}
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return sum;
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}
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void main( void ) {
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Handle patch;
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PatchDescriptor **pd;
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patch = Get1Resource( 'ptch', 128 );
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DetachResource( patch );
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pd = (PatchDescriptor **) Get1Resource( 'pDES', 128 );
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DetachResource( (Handle) pd );
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(**pd).patchDescriptorLen = ( GetHandleSize((Handle)pd) + 1 ) & ~1;
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(**pd).patchCRC = DriverChecksum( patch );
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(**pd).patchSize = GetHandleSize( patch );
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OpenResFile( "\pEphemerboot Installer" );
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RemoveResource( Get1Resource( 'pDES', 128 ) );
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AddResource( (Handle) pd, 'pDES', 128, "\p" );
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RemoveResource( Get1Resource( 'ptch', 128 ) );
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AddResource( patch, 'ptch', 128, "\p" );
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}
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