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authorArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2008-01-16 17:35:41 +0200
committerArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2008-01-16 17:35:41 +0200
commitd78b73e2ca216777e17066091ef449e9cdaffae7 (patch)
tree082198023b2dcc680252a05b9d50475c4048c430 /checkfs/checkfs.c
parent396643e2cbf05cdc3d2a8fa34cf2d4f8cc1d8441 (diff)
tests: move checkfs test to tests directory
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Diffstat (limited to 'checkfs/checkfs.c')
-rw-r--r--checkfs/checkfs.c695
1 files changed, 0 insertions, 695 deletions
diff --git a/checkfs/checkfs.c b/checkfs/checkfs.c
deleted file mode 100644
index da2d0c4..0000000
--- a/checkfs/checkfs.c
+++ /dev/null
@@ -1,695 +0,0 @@
-/*
-
- * Copyright Daniel Industries.
- *
- * Created by: Vipin Malik (vipin.malik@daniel.com)
- *
- * This code is released under the GPL version 2. 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.
-
- This program opens files in progression (file00001, file00002 etc),
- upto MAX_NUM_FILES and checks their CRC. If a file is not found or the
- CRC does not match it stops it's operation.
-
- Everything is logged in a logfile called './logfile'.
-
- If everything is ok this program sends a signal, via com1, to the remote
- power control box to power cycle this computer.
-
- This program then proceeds to create new files file0....file<MAX_NUM_FILES>
- in a endless loop and checksum each before closing them.
-
- STRUCTURE OF THE FILES:
- The fist int is the size of the file in bytes.
- The last 2 bytes are the CRC for the entire file.
- There is random data in between.
-
- The files are opened in the current dir.
-
- $Id: checkfs.c,v 1.8 2005/11/07 11:15:17 gleixner Exp $
- $Log: checkfs.c,v $
- Revision 1.8 2005/11/07 11:15:17 gleixner
- [MTD / JFFS2] Clean up trailing white spaces
-
- Revision 1.7 2001/06/21 23:04:17 dwmw2
- Initial import to MTD CVS
-
- Revision 1.6 2001/06/08 22:26:05 vipin
- Split the modbus comm part of the program (that sends the ok to pwr me down
- message) into another file "comm.c"
-
- Revision 1.5 2001/06/08 21:29:56 vipin
- fixed small issue with write() checking for < 0 instead of < (bytes to be written).
- Now it does the latter (as it should).
-
- Revision 1.4 2001/05/11 22:29:40 vipin
- Added a test to check and err out if the first int in file (which tells us
- how many bytes there are in the file) is zero. This will prevent a corrupt
- file with zero's in it from passing the crc test.
-
- Revision 1.3 2001/05/11 21:33:54 vipin
- Changed to use write() rather than fwrite() when creating new file. Additionally,
- and more important, it now does a single write() for the entire data. This will
- enable us to use this program to test for power fail *data* reliability when
- writing over an existing file, specially on powr fail "safe" file systems as
- jffs/jffs2. Also added a new cmdline parameter "-e" that specifies the max # of
- errors that can be tolerated. This should be set to ZERO to test for the above,
- as old data should be reliabily maintained if the newer write never "took" before
- power failed. If the write did succeed, then the newer data will have its own
- CRC in place when it gets checked => hence no error. In theory at least!
-
-
- Revision 1.2 2001/05/11 19:27:33 vipin
- Added cmd line args to change serial port, and specify max size of
- random files created. Some cleanup. Added -Wall to Makefile.
-
- Revision 1.1 2001/05/11 16:06:28 vipin
- Importing checkfs (the power fail test program) into CVS. This was
- originally done for NEWS. NEWS had a lot of version, this is
- based off the last one done for NEWS. The "makefiles" program
- is run once initially to create the files in the current dir.
- "checkfs" is then run on every powerup to check consistancy
- of the files. See checkfs.c for more details.
-
-
-*/
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <termios.h>
-#include <unistd.h>
-#include <errno.h>
-#include <unistd.h>
-#include <string.h>
-#include <time.h>
-#include "common.h"
-
-
-
-extern int do_pwr_dn(int fd, int cycleCnt);
-
-#define CMDLINE_PORT "-p"
-#define CMDLINE_MAXFILEBYTES "-s"
-#define CMDLINE_MAXERROR "-e"
-#define CMDLINE_HELPSHORT "-?"
-#define CMDLINE_HELPLONG "--help"
-
-
-int CycleCount;
-
-char SerialDevice[255] = "/dev/ttyS0"; /* default, can be changed
- through cmd line. */
-
-#define MAX_INTS_ALLOW 100000 /* max # of int's in the file written.
- Statis limit to size struct. */
-float FileSizeMax = 1024.0; /*= (file size in bytes), MUST be float*/
-
-int MaxErrAllowed = 1; /* default, can ge changed thru cmd line*/
-
-
-/* Needed for CRC generation/checking */
-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
-};
-
-
-/*
- Set's up the Linux serial port. Must be passed string to device to
- open. Parameters are fixed to 9600,e,1
-
- [A possible enhancement to this program would be to pass these
- parameters via the command line.]
-
- Returns file descriptor to open port. Use this fd to write to port
- and close it later, when done.
-*/
-int setupSerial (const char *dev) {
- int i, fd;
- struct termios tios;
-
- fd = open(dev,O_RDWR | O_NDELAY );
- if (fd < 0) {
- fprintf(stderr, "%s: %s\n", dev, sys_errlist[errno]);
- exit(1);
- }
- if (tcgetattr(fd, &tios) < 0) {
- fprintf(stderr,"Could not get terminal attributes: %s",sys_errlist[errno]);
- exit(1);
- }
-
- tios.c_cflag =
- CS7 |
- CREAD | // Enable Receiver
- HUPCL | // Hangup after close
- CLOCAL | // Ignore modem control lines
- PARENB; // Enable parity (even by default)
-
-
-
- tios.c_iflag = IGNBRK; // Ignore break
- tios.c_oflag = 0;
- tios.c_lflag = 0;
- for(i = 0; i < NCCS; i++) {
- tios.c_cc[i] = '\0'; // no special characters
- }
- tios.c_cc[VMIN] = 1;
- tios.c_cc[VTIME] = 0;
-
- cfsetospeed (&tios, B9600);
- cfsetispeed (&tios, B9600);
-
- if (tcsetattr(fd, TCSAFLUSH, &tios) < 0) {
- fprintf(stderr,"Could not set attributes: ,%s",sys_errlist[errno]);
- exit(1);
- }
- return fd;
-}
-
-
-
-
-
-//A portion of 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!!!!
-int check_crc_ccitt(char *filename)
-{
- FILE *fp;
- FILE *logfp;
- unsigned short crc = 0xffff;
- int len;
- char dataByte;
- int retry;
- char done;
-
- fp = fopen(filename,"rb");
- if(!fp){
- logfp = fopen("logfile","a"); /*open for appending only.*/
- fprintf(logfp, "Verify checksum:Error! Cannot open filename passed for verify checksum: %s\n",filename);
- fclose(logfp);
- return FALSE;
- }
-
-
- /*the first int contains an int that is the length of the file in long.*/
- if(fread(&len, sizeof(int), 1, fp) != 1){
- logfp = fopen("logfile","a"); /*open for appending only.*/
- fprintf(logfp, "verify checksum:Error reading from file: %s\n", filename);
- fclose(fp);
- fclose(logfp);
- return FALSE;
- }
-
- /* printf("Checking %i bytes for CRC in \"%s\".\n", len, filename); */
-
- /* Make sure that we did not read 0 as the number of bytes in file. This
- check prevents a corrupt file with zero's in it from passing the
- CRC test. A good file will always have some data in it. */
- if(len == 0)
- {
-
- logfp = fopen("logfile","a"); /*open for appending only.*/
- fprintf(logfp, "verify checksum: first int claims there are 0 data in file. Error!: %s\n", filename);
- fclose(fp);
- fclose(logfp);
- return FALSE;
- }
-
-
- 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*/
- done = FALSE;
- while(!done){
- if(fread(&dataByte, sizeof(char), 1, fp) != 1){
- retry--;
- }else{
- done = TRUE;
- }
- if(retry == 0){
- done = TRUE;
- }
- }
- if(!retry){
- logfp = fopen("logfile","a"); /*open for appending only.*/
- fprintf(logfp, "Unexpected end of file: %s\n", filename);
- fprintf(logfp, "...bytes left to be read %i.\n",len);
- fclose(logfp);
- fclose(fp);
- return FALSE;
- }
- crc = (crc >> 8) ^ crc_ccitt_table[(crc ^ dataByte) & 0xff];
- }
- fclose(fp);
- if( (crc & 0xffff) != 0xf0b8){
- /*printf("The CRC of read file:%x\n", crc); */
- return FALSE;
- }
- return TRUE;
-}/*end check_crc_ccitt() */
-
-
-
-/*
- Sends "OK to power me down" message to the remote
- power cycling box, via the serial port.
- Also updates the num power cycle count in a local
- file.
- This file "./cycleCnt" must be present. This is
- initially (and once) created by the separate "makefiles.c"
- program.
-*/
-void send_pwrdn_ok(void){
-
- int fd;
- FILE *cyclefp;
- int cycle_fd;
-
- cyclefp = fopen("cycleCnt","rb");
- if(!cyclefp){
- printf("expecting file \"cycleCnt\". Cannot continue.\n");
- exit(1);
- }
- if(fread(&CycleCount, sizeof(CycleCount),1,cyclefp) != 1){
- fprintf(stderr, "Error! Unexpected end of file cycleCnt.\n");
- exit(1);
- }
- fclose(cyclefp);
-
- CycleCount++;
-
- /*now write this puppy back*/
- cyclefp = fopen("cycleCnt","wb");
- cycle_fd = fileno(cyclefp);
- if(!cyclefp){
- fprintf(stderr, "Error! cannot open file for write:\"cycleCnt\". Cannot continue.\n");
- exit(1);
- }
- if(fwrite(&CycleCount, sizeof(CycleCount), 1,cyclefp) !=1){
- fprintf(stderr, "Error writing to file cycleCnt. Cannot continue.\n");
- exit(1);
- }
- if(fdatasync(cycle_fd)){
- fprintf(stderr, "Error! cannot sync file buffer with disk.\n");
- exit(1);
- }
-
- fclose(cyclefp);
- (void)sync();
-
- printf("\n\n Sending Power down command to the remote box.\n");
- fd = setupSerial(SerialDevice);
-
- if(do_pwr_dn(fd, CycleCount) < 0)
- {
- fprintf(stderr, "Error sending power down command.\n");
- exit(1);
- }
-
- close(fd);
-}//end send_pwrnd_ok()
-
-
-
-
-/*
- Appends 16bit CRC at the end of numBytes long buffer.
- Make sure buf, extends at least 2 bytes beyond.
- */
-void appendChecksum(char *buf, int numBytes){
-
- unsigned short crc = 0xffff;
- int index = 0;
-
- /* printf("Added CRC (2 bytes) to %i bytes.\n", numBytes); */
-
- for (; numBytes > 0; numBytes--){
-
- crc = (crc >> 8) ^ crc_ccitt_table[(crc ^ buf[index++]) & 0xff];
- }
- crc ^= 0xffff;
- /*printf("The CRC: %x\n\n", crc);*/
-
- buf[index++] = crc;
- buf[index++] = crc >> 8;
-
-
-
-}/*end checksum()*/
-
-
-
-
-
-/*
- This guy make a new "random data file" with the filename
- passed to it. This file is checksummed with the checksum
- stored at the end. The first "int" in the file is the
- number of int's in it (this is needed to know how much
- data to read and checksum later).
-*/
-void make_new_file(char *filename){
-
-
- int dfd; /* data file descriptor */
- int rand_data;
- int data_size;
- int temp_size;
- int dataIndex = 0;
- int err;
-
-
- struct {
- int sizeInBytes; /* must be int */
- int dataInt[MAX_INTS_ALLOW+1]; /* how many int's can we write? */
- }__attribute((packed)) dataBuf;
-
-
- fprintf(stderr, "Creating File:%s. ", filename);
-
- if((dfd = open(filename, O_RDWR | O_CREAT | O_SYNC)) <= 0)
- {
- printf("Error! Cannot open file: %s\n",filename);
- perror("Error");
- 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.*/
-
- /*file should not be less than 5 ints long. (so that we have decent length files,
- that's all)*/
- while(
- ((data_size = (int)(1+(int)((FileSizeMax/sizeof(int))*rand()/(RAND_MAX+1.0)))) < 5)
- );
-
- /* printf("Writing %i ints to the file.\n", data_size); */
-
- temp_size = data_size * sizeof(int);
-
- /* Make sure that all data is written in one go! This is important to
- check for reliability of file systems like JFFS/JFFS that purport to
- have "reliable" writes during powre fail.
- */
-
- dataBuf.sizeInBytes = temp_size;
-
- data_size--; /*one alrady written*/
- dataIndex = 0;
-
- while(data_size--){
- rand_data = (int)(1 + (int)(10000.0*rand()/(RAND_MAX+1.0)));
-
- dataBuf.dataInt[dataIndex++] = rand_data;
-
- }
-
- /*now calculate the file checksum and append it to the end*/
- appendChecksum((char *)&dataBuf, dataBuf.sizeInBytes);
-
- /* Don't forget to increase the size of data written by the 2 chars of CRC at end.
- These 2 bytes are NOT included in the sizeInBytes field. */
- if((err = write(dfd, (void *)&dataBuf, dataBuf.sizeInBytes + sizeof(short))) <
- (dataBuf.sizeInBytes + sizeof(short))
- )
- {
- printf("Error writing data buffer to file. Written %i bytes rather than %i bytes.",
- err, dataBuf.sizeInBytes);
- perror("Error");
- exit(1);
- }
-
- /* Now that the data is (hopefully) safely written. I can truncate the file to the new
- length so that I can reclaim any unused space, if the older file was larger.
- */
- if(ftruncate(dfd, dataBuf.sizeInBytes + sizeof(short)) < 0)
- {
- perror("Error: Unable to truncate file.");
- exit(1);
- }
-
-
- close(dfd);
-
-
-}//end make_new_file()
-
-
-
-/*
- Show's help on stdout
- */
-void printHelp(char **argv)
-{
- printf("Usage:%s <options, defined below>\n", argv[0]);
- printf("%s </dev/ttyS0,1,2...>: Set com port to send ok to pwr dn msg on\n",
- CMDLINE_PORT);
- printf("%s <n>: Set Max size in bytes of each file to be created.\n",
- CMDLINE_MAXFILEBYTES);
- printf("%s <n>: Set Max errors allowed when checking all files for CRC on start.\n",
- CMDLINE_MAXERROR);
- printf("%s or %s: This Help screen.\n", CMDLINE_HELPSHORT,
- CMDLINE_HELPLONG);
-
-}/* end printHelp()*/
-
-
-
-void processCmdLine(int argc, char **argv)
-{
-
- int cnt;
-
- /* skip past name of this program, process rest */
- for(cnt = 1; cnt < argc; cnt++)
- {
- if(strcmp(argv[cnt], CMDLINE_PORT) == 0)
- {
- strncpy(SerialDevice, argv[++cnt], sizeof(SerialDevice));
- continue;
- }else
- if(strcmp(argv[cnt], CMDLINE_MAXFILEBYTES) == 0)
- {
- FileSizeMax = (float)atoi(argv[++cnt]);
- if(FileSizeMax > (MAX_INTS_ALLOW*sizeof(int)))
- {
- printf("Max file size allowd is %i.\n",
- MAX_INTS_ALLOW*sizeof(int));
- exit(0);
- }
-
- continue;
- }else
- if(strcmp(argv[cnt], CMDLINE_HELPSHORT) == 0)
- {
- printHelp(argv);
- exit(0);
-
- }else
- if(strcmp(argv[cnt], CMDLINE_HELPLONG) == 0)
- {
- printHelp(argv);
- exit(0);
- }else
-
- if(strcmp(argv[cnt], CMDLINE_MAXERROR) == 0)
- {
- MaxErrAllowed = atoi(argv[++cnt]);
- }
- else
- {
- printf("Unknown cmd line option:%s\n", argv[cnt]);
- printHelp(argv);
- exit(0);
-
- }
- }
-
-
-}/* end processCmdLine() */
-
-
-
-
-
-int main(int argc, char **argv){
-
- FILE *logfp;
- int log_fd;
- char filename[30];
- short filenameCounter = 0;
- unsigned short counter;
- unsigned short numberFiles;
- char error = FALSE;
- short errorCnt = 0;
- time_t timep;
- char * time_string;
- unsigned int seed;
-
-
- numberFiles = MAX_NUM_FILES;
-
- if(argc >= 1)
- {
- processCmdLine(argc, argv);
- }
-
-
- /*
- First open MAX_NUM_FILES and make sure that the checksum is ok.
- Also make an intry into the logfile.
- */
- /* timestamp! */
- time(&timep);
- time_string = (char *)ctime((time_t *)&timep);
-
- /*start a new check, make a log entry and continue*/
- logfp = fopen("logfile","a"); /*open for appending only.*/
- log_fd = fileno(logfp);
- fprintf(logfp,"%s", time_string);
- fprintf(logfp,"Starting new check.\n");
- if(fdatasync(log_fd) == -1){
- fprintf(stderr,"Error! Cannot sync file data with disk.\n");
- exit(1);
- }
-
- fclose(logfp);
- (void)sync();
-
- /*
- Now check all random data files in this dir.
- */
- for(counter=0;counter<MAX_NUM_FILES;counter++){
-
- fprintf(stderr, "%i.", counter);
-
- /*create the filename in sequence. The number of files
- to check and the algorithm to create the filename is
- fixed and known in advance.*/
- sprintf(filename,"file%i",filenameCounter++);
-
- if(!check_crc_ccitt(filename)){
- /*oops, checksum does not match. Make an entry into the log file
- and decide if we can continue or not.*/
- fprintf(stderr, "crcError:%s ", filename);
- logfp = fopen("logfile","a"); /*open for appending only.*/
- log_fd = fileno(logfp);
- fprintf(logfp,"CRC error in file: %s\n", filename);
- if(fdatasync(log_fd) == -1){
- fprintf(stderr,"Error! Cannot sync file data with disk.\n");
- exit(1);
- }
- fclose(logfp);
- (void)sync();
-
- error = TRUE;
- errorCnt++;
-
- if(errorCnt > MaxErrAllowed){
- logfp = fopen("logfile","a"); /*open for appending only.*/
- log_fd = fileno(logfp);
- fprintf(logfp,"\nMax Error count exceed. Stopping!\n");
- if(fdatasync(log_fd) == -1){
- fprintf(stderr,"Error! Cannot sync file data with disk.\n");
- exit(1);
- }
- fclose(logfp);
- (void)sync();
-
- fprintf(stderr, "Too many errors. See \"logfile\".\n");
- exit(1);
- }/* if too many errors */
-
- /*we have decided to continue, however first repair this file
- so that we do not cumulate errors across power cycles.*/
- make_new_file(filename);
- }
- }//for
-
- /*all files checked, make a log entry and continue*/
- logfp = fopen("logfile","a"); /*open for appending only.*/
- log_fd = fileno(logfp);
- fprintf(logfp,"All files checked. Total errors found: %i\n\n", errorCnt);
- if(fdatasync(log_fd)){
- fprintf(stderr, "Error! cannot sync file buffer with disk.\n");
- exit(1);
- }
-
- fclose(logfp);
- (void)sync();
-
- /*now send a message to the remote power box and have it start a random
- pwer down timer after which power will be killed to this unit.
- */
- send_pwrdn_ok();
-
- /*now go into a forever loop of writing to files and CRC'ing them on
- a continious basis.*/
-
- /*start from a random file #*/
- /*seed rand based on the current time*/
- seed = (unsigned int)time(NULL);
- srand(seed);
-
- filenameCounter=(int)(1+(int)((float)(MAX_NUM_FILES-1)*rand()/(RAND_MAX+1.0)));
-
- while(1){
-
- for(;filenameCounter<MAX_NUM_FILES;filenameCounter++){
-
- /*create the filename in sequence*/
- sprintf(filename,"file%i",filenameCounter);
- make_new_file(filename);
- }
- filenameCounter = 0;
- }
-
- exit(0); /* though we will never reach here, but keeps the compiler happy*/
-}/*end main()*/