Created
May 11, 2015 15:24
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#include <windows.h> | |
#include <stdio.h> | |
#define BUF_SIZE 8192 | |
// http://osandamalith.wordpress.com | |
int main(int argc, LPTSTR argv[]) | |
{ | |
HANDLE hIn, hOut; | |
DWORD nIn, nOut; | |
CHAR buffer[BUF_SIZE]; | |
if (argc != 3) { | |
fprintf(stderr, "Usage: cp file1 file2\n"); | |
return 1; | |
} | |
hIn = CreateFile(argv[1], GENERIC_READ, 0, NULL, OPEN_EXISTING, | |
FILE_ATTRIBUTE_NORMAL | FILE_FLAG_SEQUENTIAL_SCAN, NULL); | |
if (hIn == INVALID_HANDLE_VALUE) { | |
fprintf(stderr, "Cannot open input file. Error: %x\n", GetLastError()); | |
return 2; | |
} | |
hOut = CreateFile(argv[2], GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, | |
FILE_ATTRIBUTE_NORMAL | FILE_FLAG_SEQUENTIAL_SCAN, NULL); | |
if (hOut == INVALID_HANDLE_VALUE) { | |
fprintf(stderr, "Cannot open output file. Error: %x\n", GetLastError()); | |
CloseHandle(hIn); | |
return 3; | |
} | |
while (ReadFile(hIn, buffer, BUF_SIZE, &nIn, NULL) && nIn > 0) { | |
WriteFile(hOut, buffer, nIn, &nOut, NULL); | |
if (nIn != nOut) { | |
fprintf(stderr, "Fatal write error: %x\n", GetLastError()); | |
CloseHandle(hIn); CloseHandle(hOut); | |
return 4; | |
} | |
} | |
CloseHandle(hIn); | |
CloseHandle(hOut); | |
return 0; | |
} |
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