diff options
Diffstat (limited to 'checkfs')
| -rw-r--r-- | checkfs/Makefile | 14 | ||||
| -rw-r--r-- | checkfs/README | 173 | ||||
| -rw-r--r-- | checkfs/checkfs.c | 695 | ||||
| -rw-r--r-- | checkfs/comm.c | 67 | ||||
| -rw-r--r-- | checkfs/common.h | 7 | ||||
| -rw-r--r-- | checkfs/makefiles.c | 264 |
6 files changed, 0 insertions, 1220 deletions
diff --git a/checkfs/Makefile b/checkfs/Makefile deleted file mode 100644 index ac94dde..0000000 --- a/checkfs/Makefile +++ /dev/null @@ -1,14 +0,0 @@ - -all: checkfs makefiles - -checkfs: checkfs.c Makefile common.h comm.o - gcc -g -Wall checkfs.c comm.o -o checkfs - -comm.o: comm.c Makefile - gcc -g -Wall -c comm.c -o comm.o - -makefiles: makefiles.c Makefile common.h - gcc -g -Wall makefiles.c -o makefiles - -clean: - rm -f makefiles checkfs *~ *.o diff --git a/checkfs/README b/checkfs/README deleted file mode 100644 index d9966a5..0000000 --- a/checkfs/README +++ /dev/null @@ -1,173 +0,0 @@ -$Id: README,v 1.2 2001/06/21 23:07:06 dwmw2 Exp $ -$Log: README,v $ -Revision 1.2 2001/06/21 23:07:06 dwmw2 -Initial import to MTD CVS - -Revision 1.1 2001/06/11 19:34:40 vipin -Added README file to dir. - - -This is the README file for the "checkfs" power fail test program. -By: Vipin Malik - -NOTE: This program requires an external "power cycling box" -connected to one of the com ports of the system under test. -This power cycling box should wait for a random amount of time -after it receives a "ok to power me down" message over the -serial port, and then yank power to the system under test. -(The box that I rigged up tested with waits anywhere from -0 to ~40 seconds). - - -It should then restore power after a few seconds and wait for the -message again. - - -ABOUT: - -This program's primary purpose it to test the reliiability -of various file systems under Linux. - -SETUP: - -You need to setup the file system you want to test and run the -"makefiles" program ONCE. This creates a set of files that are -required by the "checkfs" program. - -Also copy the "checkfs" executable program to the same dir. - -Then you need to make sure that the program "checkfs" is called -automatically on startup. You can customise the operation of -the "checkfs" program by passing it various cmd line arguments. -run "checkfs -?" for more details. - -****NOTE******* -Make sure that you call the checkfs program only after you have -mounted the file system you want to test (this is obvious), but -also after you have run any "scan" utilities to check for and -fix any file systems errors. The e2fsck is one utility for the -ext2 file system. For an automated setup you of course need to -provide these scan programs to run in standalone mode (-f -y -flags for e2fsck for example). - -File systems like JFFS and JFFS2 do not have any such external -utilities and you may call "checkfs" right after you have mounted -the respective file system under test. - -There are two ways you can mount the file system under test: - -1. Mount your root fs on a "standard" fs like ext2 and then -mount the file system under test (which may be ext2 on another -partition or device) and then run "checkfs" on this mounted -partition OR - -2. Make your fs AND device that you have put this fs as your -root fs and run "checkfs" on the root device (i.e. "/"). -You can of course still run checkfs under a separate dir -under your "/" root dir. - -I have found the second method to be a particularly stringent -arrangement (and thus preferred when you are trying to break -something). - -Using this arrangement I was able to find that JFFS clobbered -some "sister" files on the root fs even though "checkfs" would -run fine through all its own check files. - -(I found this out when one of the clobbered sister file happened -to be /bin/bash. The system refused to run rc.local thus -preventing my "checkfs" program from being launched :) - -"checkfs": - -The "formatting" reliability of the fs as well as the file data integrity -of files on the fs can be checked using this program. - -"formatiing" reliability can only be checked via an indirect method. -If there is severe formatting reliability issues with the file system, -it will most likely cause other system failures that will prevent this -program from running successfully on a power up. This will prevent -a "ok to power me down" message from going out to the power cycling -black box and prevent power being turned off again. - -File data reliability is checked more directly. A fixed number of -files are created in the current dir (using the program "makefiles"). - -Each file has a random number of bytes in it (set by using the --s cmd line flag). The number of "ints" in the file is stored as the -first "int" in it (note: 0 length files are not allowed). Each file -is then filled with random data and a 16 bit CRC appended at the end. - -When "checkfs" is run, it runs through all files (with predetermined -file names)- one at a time- and checks for the number of "int's" -in it as well as the ending CRC. - -The program exits if the numbers of files that are corrupt are greater -that a user specified parameter (set by using the -e cmd line flag). - -If the number of corrupt files is less than this parameter, the corrupt -files are repaired and operation resumes as explained below. - -The idea behind allowing a user specified amount of corrupt files is as -follows: - -If you are testing for "formatting" reliability of a fs, and for -the data reliability of "other" files present of the fs, use -e 1. -"other" files are defined as sister files on the fs, not being written to -by the "checkfs" test program. - -As mentioned, in this case you would set -e 1, or allow at most 1 file -to be corrupt each time after a power fail. This would be the file -that was probably being written to when power failed (and CRC was not -updated to reflect the new data being written). You would check file -systems like ext2 etc. with such a configuration. -(As you have no hope that these file systems provide for either your -new data or old data to be present in the file if power failed during -the write. This is called "roll back and recover".) - -With JFFS2 I tested for such "roll back and recover" file data reliability -by setting -e 0 and making sure that all writes to the file being -updated are done in a *single* write(). - -This is how I found that JFFS2 (yet) does NOT support this functionality. -(There was a great debate if this was a bug or a feature that was lacking -or even an issue at all. See the mtd archives for more details). - -In other words, JFFS2 will partially update a file on FLASH even before -the write() command has completed, thus leaving part old data part new -data in your file if power failed in the middle of a write(). - -This is bad functionality if you are updating a binary structure or a -CRC protected file (as in our case). - - -If All Files Check Out OK: - -On the startup scan, if there are less errors than specified by the "-e flag" -a "ok to power me down message" is sent via the specified com port. - -The actual format of this message will depend on the format expected -by the power cycling box that will receive this message. One may customise -the actual message that goes out in the "do_pwr_dn)" routine in "comm.c". - -This file is called with an open file descriptor to the comm port that -this message needs to go out over and the count of the current power -cycle (in case your power cycling box can display/log this count). - -After this message has been sent out, the checkfs program goes into -a while(1) loop of writing new data (with CRC), one at a time, into -all the "check files" in the dir. - -Its life comes to a sudden end when power is asynchronously pulled from -under its feet (by your external power cycling box). - -It comes back to life when power is restored and the system boots and -checkfs is called from the rc.local script file. - -The cycle then repeats till a problem is detected, at which point -the "ok to power me down" message is not sent and the cycle stops -waiting for the user to examine the system. - - - - 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()*/ diff --git a/checkfs/comm.c b/checkfs/comm.c deleted file mode 100644 index 57fc7ed..0000000 --- a/checkfs/comm.c +++ /dev/null @@ -1,67 +0,0 @@ -/* - File: comm.c - Desc: This file implements the actual transmission portion - of the "ok to power me down" message to the remote - power cycling black box. - - It's been sepatated into a separate file so that - it may be replaced by any other comm mechanism desired. - - (including none or non serial mode at all) - - $Id: comm.c,v 1.3 2005/11/07 11:15:17 gleixner Exp $ - $Log: comm.c,v $ - Revision 1.3 2005/11/07 11:15:17 gleixner - [MTD / JFFS2] Clean up trailing white spaces - - Revision 1.2 2001/06/21 23:07:18 dwmw2 - Initial import to MTD CVS - - Revision 1.1 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" - - - - */ - -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> - - - -/* - This is the routine that forms and - sends the "ok to pwr me down" message - to the remote power cycling "black box". - - */ -int do_pwr_dn(int fd, int cycleCnt) -{ - - char buf[200]; - - sprintf(buf, "ok to power me down!\nCount = %i\n", cycleCnt); - - if(write(fd, buf, strlen(buf)) < strlen(buf)) - { - perror("write error"); - return -1; - } - - return 0; -} - - - - - - - - - - - - - diff --git a/checkfs/common.h b/checkfs/common.h deleted file mode 100644 index 1d33f8b..0000000 --- a/checkfs/common.h +++ /dev/null @@ -1,7 +0,0 @@ -/* $Id: common.h,v 1.1 2001/06/21 23:07:56 dwmw2 Exp $ */ -//this .h file is common to both the file creation utility and -//the file checking utility. -#define TRUE 1 -#define FALSE 0 - -#define MAX_NUM_FILES 100 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()*/ - - - - - - - |