task: user-mode programm must send array driver using api writefile
gpdwrite.c(89) error code 1
#include <windows.h> #include <stddef.h> #include <stdio.h> #include <stdlib.h> #include <winioctl.h> #include "gpioctl.h" // defines ioctl constants. #include <dontuse.h> void __cdecl main( __in ulong argc, __in_ecount(argc) pchar argv[] ) { // following returned ioctl. true if write succeeds. bool ioctlresult; lpdword writtenbytes; // following parameters used in ioctl call handle hndfile; // handle device, obtain createfile genport_write_input inputbuffer; // input buffer deviceiocontrol long ioctlcode; ulong datavalue; ulong datalength; ulong returnedlength; // number of bytes returned in output buffer char datastr[20]; int j = 0; (j=0; j<20; j++) datastr[j] = ' '; if (argc < 4) { printf("gpdwrite -b|-w|-d <port#> <value>\n\n"); printf(" byte (-b), word (-w), or doubleword (-d) specified\n"); printf(" value written given port. ports numbered\n"); printf(" 0, 1, ... relative base port assinged driver\n"); printf(" pnp manager according driver preferences\n"); printf(" in inf file. numbers printed in hex.\n"); exit(1); } hndfile = createfile( "\\\\.\\gpddev", // open device "file" generic_write, file_share_write, null, open_existing, file_attribute_normal, null); if (hndfile == invalid_handle_value) // device opened? { printf("unable open device.\n"); exit(1); } if (sscanf_s(argv[2], "%x", &inputbuffer.portnumber) == 0) { // port number printf("sscanf_s failed\n"); exit(1); } if (sscanf_s(argv[3], "%x", &datavalue) == 0) { // data written. printf("sscanf_s failed scan hex\n"); //exit(1); } //*********************************************************************************************** if (!writefile(hndfile,datastr,sizeof(datastr), 0, null)) { printf("writefile failed!!! %ld\n",getlasterror()); } //*********************************************************************************************** switch (argv[1][1]) { /*case 'b': ioctlcode = ioctl_gpd_write_port_uchar; inputbuffer.chardata = (uchar)datavalue; datalength = offsetof(genport_write_input, chardata) + sizeof(inputbuffer.chardata); printf("datavalue = %d (uchar)datavalue = %d\n",datavalue, (uchar)datavalue); break; case 'w': ioctlcode = ioctl_gpd_write_port_ushort; inputbuffer.shortdata = (ushort)datavalue; datalength = offsetof(genport_write_input, shortdata) + sizeof(inputbuffer.shortdata); break; case 'd': ioctlcode = ioctl_gpd_write_port_ulong; inputbuffer.longdata = (ulong)datavalue; datalength = offsetof(genport_write_input, longdata) + sizeof(inputbuffer.longdata); break; */ case 'c': if (sscanf_s(argv[3], "%19s", datastr,20) == 0) { // data written. printf("sscanf_s failed\n"); exit(1); } ioctlcode = ioctl_gpd_write_port_str; (j=0;j < 20;j++) { inputbuffer.mystr[j] = datastr[j]; } datalength = offsetof(genport_write_input, mystr) + sizeof(inputbuffer.mystr); //writefile(hndfile,(void *)datavalue,sizeof(datavalue),null,null); break; default: printf("wrong command line argument %c\n", argv[1][1]); exit(1); } ioctlresult = deviceiocontrol( hndfile, // handle device ioctlcode, // io control code write &inputbuffer, // buffer driver. holds port & data. datalength, // length of buffer in bytes. null, // buffer driver. not used. 0, // length of buffer in bytes. &returnedlength, // bytes placed in outbuf. should 0. null // null means wait till i/o completes. ); if (ioctlresult) // did ioctl succeed? { printf( "wrote data %x port %x\n", datavalue, inputbuffer.portnumber); } else { printf( "ioctl failed code %ld\n", getlasterror() ); } if (!closehandle(hndfile)) // close device "file". { printf("failed close device.\n"); } exit(0); } i'm bad in this. can tell me how fix this? driver ready (i think). need make user-mode program using it
Comments
Post a Comment