137 lines
2.8 KiB
C
137 lines
2.8 KiB
C
/*++
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Copyright (c) 1989 Microsoft Corporation
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Module Name:
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startup.c
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Abstract:
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This module contains the startup code for an NT Application
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Author:
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Steve Wood (stevewo) 22-Aug-1989
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Environment:
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User Mode only
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Revision History:
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--*/
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#include <nt.h>
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#include <ntrtl.h>
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#include <nturtl.h>
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//
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// User mode process entry point.
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//
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NTSTATUS
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_CRTAPI1
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main(
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int argc,
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char *argv[],
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char *envp[],
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ULONG DebugParameter OPTIONAL
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);
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VOID
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NtProcessStartup(
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PPEB Peb
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)
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{
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int argc;
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char **argv;
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char **envp;
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char **dst;
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char *nullPtr = NULL;
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PCH s, d;
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ULONG n, DebugParameter;
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PULONG BadPointer;
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PRTL_USER_PROCESS_PARAMETERS ProcessParameters;
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PUNICODE_STRING p;
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ANSI_STRING AnsiString;
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ASSERT( Peb != NULL );
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ProcessParameters = RtlNormalizeProcessParams( Peb->ProcessParameters );
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DebugParameter = 0;
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argc = 0;
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argv = &nullPtr;
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envp = &nullPtr;
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if (ARGUMENT_PRESENT( ProcessParameters )) {
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DebugParameter = ProcessParameters->DebugFlags;
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dst = RtlAllocateHeap( Peb->ProcessHeap, 0, 512 * sizeof( PCH ) );
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argv = dst;
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*dst = NULL;
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//
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// Now extract the arguments from the process command line.
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// using whitespace as separator characters.
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//
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p = &ProcessParameters->CommandLine;
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if (p->Buffer == NULL || p->Length == 0) {
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p = &ProcessParameters->ImagePathName;
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}
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RtlUnicodeStringToAnsiString( &AnsiString, p, TRUE );
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s = AnsiString.Buffer;
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n = AnsiString.Length;
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if (s != NULL) {
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d = RtlAllocateHeap( Peb->ProcessHeap, 0, n+2 );
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while (*s) {
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//
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// Skip over any white space.
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//
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while (*s && *s <= ' ') {
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s++;
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}
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//
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// Copy token to next white space separator and null terminate
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//
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if (*s) {
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*dst++ = d;
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argc++;
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while (*s > ' ') {
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*d++ = *s++;
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}
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*d++ = '\0';
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}
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}
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}
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*dst++ = NULL;
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envp = dst;
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s = ProcessParameters->Environment;
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if (s != NULL) {
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while (*s) {
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*dst++ = s;
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while (*s++) {
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;
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}
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}
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}
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*dst++ = NULL;
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}
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if (DebugParameter != 0) {
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DbgBreakPoint();
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}
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NtTerminateProcess( NtCurrentProcess(),
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main( argc, argv, envp, DebugParameter )
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);
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BadPointer = (PULONG)1;
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*BadPointer = 0;
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}
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