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Diffstat (limited to 'checkfs/makefiles.c')
| -rw-r--r-- | checkfs/makefiles.c | 264 |
1 files changed, 0 insertions, 264 deletions
diff --git a/checkfs/makefiles.c b/checkfs/makefiles.c deleted file mode 100644 index 662fe86..0000000 --- a/checkfs/makefiles.c +++ /dev/null @@ -1,264 +0,0 @@ -/* - - * Copyright Daniel Industries. - - * Created by: Vipin Malik (vipin.malik@daniel.com) - * - * This is GPL code. See the file COPYING for more details - * - * Software distributed under the Licence is distributed on an "AS IS" - * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. - * See the Licence for the specific language governing rights and - * limitations under the Licence. - - * $Id: makefiles.c,v 1.2 2005/11/07 11:15:17 gleixner Exp $ - -This program creates MAX_NUM_FILES files (file00001, file00002 etc) and -fills them with random numbers till they are a random length. Then it checksums -the files (with the checksum as the last two bytes) and closes the file. - -The fist int is the size of the file in bytes. - -It then opens another file and the process continues. - -The files are opened in the current dir. - -*/ -#include <sys/types.h> -#include <sys/stat.h> -#include <fcntl.h> -#include <stdio.h> -#include <stdlib.h> -#include "common.h" - -#define FILESIZE_MAX 20000.0 /* for each file in sizeof(int). Must be a float # - Hence, 20000.0 = 20000*4 = 80KB max file size - */ - -static const unsigned short crc_ccitt_table[] = { - 0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf, - 0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7, - 0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e, - 0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876, - 0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd, - 0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5, - 0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c, - 0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974, - 0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb, - 0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3, - 0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a, - 0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72, - 0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9, - 0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1, - 0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738, - 0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70, - 0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7, - 0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff, - 0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036, - 0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e, - 0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5, - 0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd, - 0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134, - 0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c, - 0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3, - 0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb, - 0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232, - 0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a, - 0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1, - 0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9, - 0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330, - 0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78 -}; - -//This code was taken from the AX.25 HDLC packet driver -//in LINUX. Once I test and have a better understanding of what -//it is doing, it will be better commented. - -//For now one can speculate that the CRC routine always expects the -//CRC to calculate out to 0xf0b8 (the hardcoded value at the end) -//and returns TRUE if it is and FALSE if it doesn't. -//Why don't people document better!!!! -void check_crc_ccitt(char *filename) -{ - FILE *fp; - unsigned short crc = 0xffff; - int len; - char dataByte; - int retry; - - fp = fopen(filename,"rb"); - if(!fp){ - printf("Verify checksum:Error! Cannot open filename passed for verify checksum: %s\n",filename); - exit(1); - } - /*the first int contains an int that is the length of the file in long.*/ - if(fread(&len, sizeof(int), 1, fp) != 1){ - printf("verify checksum:Error reading from file: %s", filename); - fclose(fp); - exit(1); - } - rewind(fp); - len+=2; /*the file has two extra bytes at the end, it's checksum. Those - two MUST also be included in the checksum calculation. - */ - - for (;len>0;len--){ - retry=5; /*retry 5 times*/ - while(!fread(&dataByte, sizeof(char), 1, fp) && retry--); - if(!retry){ - printf("Unexpected error reading from file: %s\n", filename); - printf("...bytes left to be read %i.\n\n",len); - fclose(fp); - exit(1); - } - crc = (crc >> 8) ^ crc_ccitt_table[(crc ^ dataByte) & 0xff]; - } - fclose(fp); - if( (crc & 0xffff) != 0xf0b8){ - printf("Verify checksum: Error in file %s.\n\n",filename); - exit(1); - } -}//end check_crc_ccitt() - - - -/*this routine opens a file 'filename' and checksumn's the entire - contents, and then appends the checksum at the end of the file, - closes the file and returns. -*/ -void checksum(char *filename){ - - FILE *fp; - unsigned short crc = 0xffff; - int len; - char dataByte; - int retry; - - fp = fopen(filename,"rb"); - if(!fp){ - printf("Error! Cannot open filename passed for checksum: %s\n",filename); - exit(1); - } - /*the first int contains an int that is the length of the file in longs.*/ - if(fread(&len, sizeof(int), 1, fp) != 1){ - printf("Error reading from file: %s", filename); - fclose(fp); - exit(1); - } - printf("Calculating checksum on %i bytes.\n",len); - rewind(fp); /*the # of bytes int is also included in the checksum.*/ - - for (;len>0;len--){ - retry=5; /*retry 5 times*/ - while(!fread(&dataByte, sizeof(char), 1, fp) && retry--); - if(!retry){ - printf("Unexpected error reading from file: %s\n", filename); - printf("...bytes left to be read %i.\n\n",len); - fclose(fp); - exit(1); - } - crc = (crc >> 8) ^ crc_ccitt_table[(crc ^ dataByte) & 0xff]; - } - crc ^= 0xffff; - printf("The CRC: %x\n\n", crc); - - /*the CRC has been calculated. now close the file and open it in append mode*/ - fclose(fp); - - fp = fopen(filename,"ab"); /*open in append mode. CRC goes at the end.*/ - if(!fp){ - printf("Error! Cannot open filename to update checksum: %s\n",filename); - exit(1); - } - if(fwrite(&crc, sizeof(crc), 1, fp) != 1){ - printf("error! unable to update the file for checksum.\n"); - fclose(fp); - exit(1); - } - fflush(fp); - fclose(fp); - - -}/*end checksum()*/ - - - -int main(void){ - - FILE *fp, *cyclefp; - int cycleCount; - int rand_data; - int data_size; - int temp_size; - char filename[30]; - short filenameCounter = 0; - unsigned short counter; - unsigned short numberFiles; - - numberFiles = MAX_NUM_FILES; - - for(counter=0;counter<numberFiles;counter++){ - /*create the filename in sequence*/ - sprintf(filename,"file%i",filenameCounter++); - fp = fopen(filename,"wb"); - if(!fp){ - printf("Error! Cannot open file: %s\n",filename); - exit(1); - } - /*now write a bunch of random binary data to the file*/ - /*first figure out how much data to write. That is random also.*/ - - while( - ((data_size = (int)(1 + (int)(FILESIZE_MAX*rand()/(RAND_MAX+1.0)))) < 100) - )/*file should not be less than 100 ints long. (so that we have decent length files, that's all)*/ - - printf("Writing %i ints to the file.\n", data_size); - - temp_size = data_size * sizeof(int); - - if(!fwrite(&temp_size, sizeof(int), 1, fp)){ - printf("File write error!!.\n"); - fclose(fp); - exit(1); - } - data_size--; /*one alrady written*/ - - while(data_size--){ - rand_data = (int)(1 + (int)(10000.0*rand()/(RAND_MAX+1.0))); - if(!fwrite(&rand_data, sizeof(int), 1, fp)){ - printf("File write error!!.\n"); - fclose(fp); - exit(1); - } - } - fflush(fp); - fclose(fp); - /*now calculate the file checksum and append it to the end*/ - checksum(filename); - /*this is just a test. Check the CRC to amek sure that it is OK.*/ - check_crc_ccitt(filename); - } - - /*now make a file called "cycleCnt" and put a binary (int)0 in it. - This file keeps count as to how many cycles have taken place!*/ - cyclefp = fopen("cycleCnt","wb"); - if(!cyclefp){ - printf("cannot open file \"cycleCnt\". Cannot continue.\n"); - exit(1); - } - cycleCount = 0; - if(fwrite(&cycleCount, sizeof(cycleCount), 1,cyclefp) !=1){ - printf("Error writing to file cycleCnt. Cannot continue.\n"); - exit(1); - } - fclose(cyclefp); - exit(0); - -}/*end main()*/ - - - - - - - |