| 1 | /******************************************************************************
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| 2 |
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| 3 | lbatest.c - simple (dumb) test program for os2ahci
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| 4 |
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| 5 | Writes the actual LBA to each sector on a hard disk. The purpose is to
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| 6 | find out if the sector mapping of os2ahci.add is correct.
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| 7 |
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| 8 | THe program was written to run under Linux, since OS/2 physical disk
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| 9 | access IOCTLs support CHS addressing, only.
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| 10 |
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| 11 | The os2ahci.add driver provides a special operating mode that does nothing
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| 12 | but verifying that the tests drive's sector's are addressed in the correct
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| 13 | manner by verifying the sector numbers written under Linux.
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| 14 |
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| 15 | Author: Markus Thielen
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| 16 |
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| 17 | Compilation: gcc -o lbatest lbatest.c
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| 18 |
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| 19 | Copyright (c) 2010 by thi.guten Software development, www.thiguten.de
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| 20 |
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| 21 | This program is free software; you can redistribute it and/or modify
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| 22 | it under the terms of the GNU General Public License as published by
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| 23 | the Free Software Foundation; either version 2 of the License, or
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| 24 | (at your option) any later version.
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| 25 |
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| 26 | This program is distributed in the hope that it will be useful,
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| 27 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 28 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 29 | GNU General Public License for more details.
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| 30 |
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| 31 | You should have received a copy of the GNU General Public License
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| 32 | along with this program; if not, write to the Free Software
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| 33 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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| 34 |
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| 35 | ******************************************************************************/
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| 36 |
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| 37 | /*---- includes -------------------------------------------------------------*/
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| 38 |
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| 39 | #include <stddef.h>
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| 40 | #include <stdlib.h>
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| 41 | #include <ctype.h>
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| 42 | #include <string.h>
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| 43 | #include <stdio.h>
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| 44 |
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| 45 | #define SECTOR_SIZE 512
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| 46 | #define SECTORS_PER_WRITE 256
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| 47 |
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| 48 |
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| 49 | /*--- function prototypes ---------------------------------------------------*/
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| 50 |
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| 51 | void usage (void);
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| 52 |
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| 53 | void write_test (char *dev);
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| 54 |
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| 55 | /*--- global data -----------------------------------------------------------*/
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| 56 |
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| 57 |
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| 58 | /*--- start of code ---------------------------------------------------------*/
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| 59 |
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| 60 | /******************************************************************************
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| 61 | * main()
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| 62 | */
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| 63 | int main(int argc, char **argv)
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| 64 | {
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| 65 |
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| 66 | if (argc < 2) {
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| 67 | usage();
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| 68 | return -1;
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| 69 | }
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| 70 |
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| 71 | write_test(argv[1]);
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| 72 |
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| 73 | return 0;
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| 74 | }
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| 75 |
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| 76 |
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| 77 |
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| 78 | /******************************************************************************
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| 79 | * write_test() - write each sector's address to the sector itself
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| 80 | */
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| 81 | void write_test(char *dev)
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| 82 | {
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| 83 | unsigned long lba;
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| 84 | float gbf = 1024.0 * 1024.0 * 1024.0 / 512.0;
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| 85 | size_t i;
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| 86 | unsigned char *wbuf;
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| 87 | char buf[100];
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| 88 | size_t cbtake = SECTOR_SIZE * SECTORS_PER_WRITE;
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| 89 | size_t cb_written;
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| 90 | FILE *fp;
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| 91 |
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| 92 | /* ask for confirmation, we destroy the drive's contents */
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| 93 | printf("I'm going to destroy ALL DATA on drive %s now.\n"
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| 94 | "type 'DESTROY' to continue, anything else to bail out.\n", dev);
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| 95 | if (fgets(buf, sizeof(buf), stdin) == NULL || strcmp(buf, "DESTROY\n")) {
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| 96 | return;
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| 97 | }
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| 98 |
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| 99 | /* open drive */
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| 100 | if ((fp = fopen(dev, "wb")) == NULL) {
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| 101 | perror("Failed to open device");
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| 102 | return;
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| 103 | }
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| 104 |
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| 105 | /* allocate big write buffer */
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| 106 | wbuf = calloc(SECTOR_SIZE, SECTORS_PER_WRITE);
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| 107 |
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| 108 | /* go... */
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| 109 | for (lba = 0; ; lba += SECTORS_PER_WRITE) {
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| 110 |
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| 111 | /* prepare buffer; set the first 4 bytes of each sector
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| 112 | * to its LBA */
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| 113 | for (i = 0; i < SECTORS_PER_WRITE; i++) {
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| 114 | *((unsigned long *)(wbuf + i * SECTOR_SIZE)) = lba + i;
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| 115 | }
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| 116 |
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| 117 | /* write buffer to disk */
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| 118 | cb_written = fwrite(wbuf, 1, cbtake, fp);
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| 119 | if (cb_written < cbtake) {
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| 120 | if (!feof(fp)) {
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| 121 | perror("Failed to write to target device");
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| 122 | }
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| 123 | break;
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| 124 | }
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| 125 |
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| 126 | /* write progress */
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| 127 | printf("\r%uk sectors written (%0.02f GB)",
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| 128 | (size_t)(lba / 1000), (float)lba / gbf);
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| 129 |
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| 130 | }
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| 131 |
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| 132 | /* cleanup */
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| 133 | fclose(fp);
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| 134 | free(wbuf);
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| 135 |
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| 136 | }
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| 137 |
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| 138 | /******************************************************************************
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| 139 | * usage() - print usage summary to STDOUT
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| 140 | */
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| 141 | void usage(void)
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| 142 | {
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| 143 | printf("lbatest for os2ahci.add\n"
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| 144 | "Usage:\n\n"
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| 145 | "lbatest <device>\n\n");
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| 146 | }
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| 147 |
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