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[/] [eco32/] [tags/] [eco32-0.26/] [stdalone/] [dskchk2/] [chkimg.c] - Rev 198
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/* * chkimg.c -- check test image */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <stdarg.h> #define NUM_SECTORS 262144 /* sync with image generator */ #define SECTOR_SIZE 512 /**************************************************************/ void error(char *fmt, ...) { va_list ap; va_start(ap, fmt); printf("Error: "); vprintf(fmt, ap); printf("\n"); va_end(ap); exit(1); } /**************************************************************/ static unsigned int randomState = 0; void setRandomSeed(unsigned int seed) { randomState = seed; } unsigned int nextRandomNumber(void) { unsigned int retVal; retVal = randomState; randomState = randomState * 1103515245 + 12345; return retVal; } /**************************************************************/ static unsigned int randomSector = 0xDEADBEEF; unsigned int nextRandomSector(unsigned int numSectors) { randomSector = randomSector * 1103515245 + 12345; return randomSector % numSectors; } /**************************************************************/ static void usage(char *myself) { printf("Usage: %s <image file name> <number of checks>\n", myself); exit(1); } int main(int argc, char *argv[]) { char *imageFileName; unsigned int numChecks; char *endptr; FILE *imageFile; unsigned int check; unsigned int sectorRequ; unsigned char buffer[SECTOR_SIZE]; int i; unsigned int sectorRead; unsigned int number; unsigned int wrong, corrupted; printf("\nIDE disk check\n\n"); if (argc != 3) { usage(argv[0]); } imageFileName = argv[1]; imageFile = fopen(imageFileName, "r"); if (imageFile == NULL) { error("cannot open image file '%s'", imageFileName); } numChecks = strtoul(argv[2], &endptr, 0); if (*endptr != '\0') { error("illegal number of checks"); } if (numChecks < 1) { error("number of checks too small"); } wrong = 0; corrupted = 0; for (check = 0; check < numChecks; check++) { sectorRequ = nextRandomSector(NUM_SECTORS); fseek(imageFile, sectorRequ * SECTOR_SIZE, SEEK_SET); if (fread(buffer, 1, SECTOR_SIZE, imageFile) != SECTOR_SIZE) { error("cannot read image file '%s'", imageFileName); } sectorRead = (buffer[0] << 24) | (buffer[1] << 16) | (buffer[2] << 8) | (buffer[3] << 0); if (sectorRead != sectorRequ) { wrong++; } setRandomSeed(sectorRead); for (i = 0; i < SECTOR_SIZE / 4; i++) { number = (buffer[4 * i + 0] << 24) | (buffer[4 * i + 1] << 16) | (buffer[4 * i + 2] << 8) | (buffer[4 * i + 3] << 0); if (number != nextRandomNumber()) { corrupted++; break; } } printf("check #%06d: requ 0x%08x, read 0x%08x, sector %s\n", check, sectorRequ, sectorRead, i == SECTOR_SIZE / 4 ? "ok" : "corrupted"); } fclose(imageFile); printf("\nTotal number of sectors: %u read, %u wrong, %u corrupted\n\n", numChecks, wrong, corrupted); return 0; }
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