1 /*
2
3 File: msdos.c
4
5 Copyright (C) 1998-2008 Christophe GRENIER <grenier@cgsecurity.org>
6
7 This software is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License along
18 with this program; if not, write the Free Software Foundation, Inc., 51
19 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20
21 */
22 #ifdef HAVE_CONFIG_H
23 #include <config.h>
24 #endif
25 #ifdef DJGPP
26 #include <stdio.h>
27 #ifdef HAVE_STRING_H
28 #include <string.h>
29 #endif
30 #include <errno.h>
31 #include "types.h"
32 #include "common.h"
33 #include <go32.h> /* dosmemget/put */
34 #include <dpmi.h>
35 #include <bios.h> /* bios_k* */
36 #ifdef HAVE_STDLIB_H
37 #include <stdlib.h> /* atexit, posix_memalign */
38 #endif
39 #include "msdos.h"
40 #include "fnctdsk.h"
41 #include "log.h"
42 #include "hdaccess.h"
43 #include "alignio.h"
44
45 #define HD_RW_BUF_SIZ 0x10
46 #define HDPARM_BUF_SIZ 0x1A
47 #define MAX_IO_NBR 3
48 #define MAX_HD_ERR 100
49
50 extern const arch_fnct_t arch_none;
51
52 static void free_dos_buffer(void);
53 static int alloc_cmd_dos_buffer(void);
54 static int hd_identify_enh_bios(disk_t *param_disk,const int verbose);
55 static int check_enh_bios(const unsigned int disk, const int verbose);
56 static int hd_report_error(disk_t *disk_car, const uint64_t hd_offset, const unsigned int count, const int rc);
57 static const char *disk_description_short(disk_t *disk_car);
58 static int disk_pread(disk_t *disk_car, void *buf, const unsigned int count, const uint64_t hd_offset);
59 static int disk_pwrite(disk_t *disk_car, const void *buf, const unsigned int count, const uint64_t hd_offset);
60 static int disk_nopwrite(disk_t *disk_car, const void *buf, const unsigned int count, const uint64_t offset);
61 static int disk_sync(disk_t *disk_car);
62 static void disk_clean(disk_t *disk_car);
63
64 static int cmd_dos_segment = 0;
65 static int cmd_dos_selector = 0;
66
free_dos_buffer(void)67 static void free_dos_buffer(void)
68 {
69 __dpmi_free_dos_memory(cmd_dos_selector);
70 cmd_dos_segment = cmd_dos_selector = 0;
71 }
72
alloc_cmd_dos_buffer(void)73 static int alloc_cmd_dos_buffer(void)
74 {
75 if (cmd_dos_segment)
76 return 0;
77 if ((cmd_dos_segment = __dpmi_allocate_dos_memory(18*DEFAULT_SECTOR_SIZE/16, &cmd_dos_selector))== -1)
78 {
79 cmd_dos_segment = 0;
80 return 1;
81 }
82 #ifdef HAVE_ATEXIT
83 atexit(free_dos_buffer);
84 #endif
85 return 0;
86 }
87
disk_reset_error(disk_t * disk_car)88 static void disk_reset_error(disk_t *disk_car)
89 {
90 struct info_disk_struct *data=(struct info_disk_struct *)disk_car->data;
91 biosdisk(0, data->disk, 0, 0, 1, 1, NULL);
92 }
93
hd_pread(disk_t * disk_car,void * buf,const unsigned int count,const uint64_t offset)94 static int hd_pread(disk_t *disk_car, void *buf, const unsigned int count, const uint64_t offset)
95 {
96 __dpmi_regs r;
97 unsigned char buf_cmd[HD_RW_BUF_SIZ];
98 int xfer_dos_segment, xfer_dos_selector;
99 int nsects;
100 unsigned long int hd_offset;
101 struct info_disk_struct *data=(struct info_disk_struct *)disk_car->data;
102 nsects=count/disk_car->sector_size;
103 hd_offset=offset/disk_car->sector_size;
104 if(data->mode_enh==0)
105 { /* Limite CHS = 1023,255,63 = 8,064Mo ~= 7.8 Go */
106 int head, track, sector;
107 if(data->geo_phys.sectors_per_head==0)
108 {
109 log_critical("hd_pread: BUG geo_phys.sectors_per_head=0 !\n");
110 return -1;
111 }
112 sector=(hd_offset%data->geo_phys.sectors_per_head)+1;
113 hd_offset/=data->geo_phys.sectors_per_head;
114 head=hd_offset%data->geo_phys.heads_per_cylinder;
115 track=hd_offset/data->geo_phys.heads_per_cylinder;
116 if(track<1024)
117 {
118 const int res=biosdisk(2, data->disk, head, track, sector, nsects, buf);
119 return (res!=0 ? -res: count);
120 }
121 return -1;
122 }
123 if(cmd_dos_segment==0)
124 if(alloc_cmd_dos_buffer())
125 return -1;
126 if ( (xfer_dos_segment=__dpmi_allocate_dos_memory((count + 15) >> 4, &xfer_dos_selector)) == -1 )
127 return -1;
128 *(uint16_t*)&buf_cmd[0]=HD_RW_BUF_SIZ;
129 *(uint16_t*)&buf_cmd[2]=nsects;
130 *(uint32_t*)&buf_cmd[0x4]=xfer_dos_segment<<16;
131 *(uint32_t*)&buf_cmd[0x8]=hd_offset;
132 *(uint32_t*)&buf_cmd[0xC]=0;
133
134 r.x.ds = cmd_dos_segment;
135 r.x.si = 0;
136 r.h.dl = data->disk;
137 r.h.ah = 0x42; /* Extended read */
138 dosmemput(&buf_cmd, HD_RW_BUF_SIZ, cmd_dos_segment<<4);
139 __dpmi_int(0x13, &r);
140 dosmemget(xfer_dos_segment<<4, count, buf);
141 __dpmi_free_dos_memory(xfer_dos_selector);
142 return (r.h.ah!=0 ? -r.h.ah : count);
143 }
144
hd_pwrite(disk_t * disk_car,const void * buf,const unsigned int count,const uint64_t offset)145 static int hd_pwrite(disk_t *disk_car, const void *buf, const unsigned int count, const uint64_t offset)
146 {
147 __dpmi_regs r;
148 unsigned char buf_cmd[HD_RW_BUF_SIZ];
149 int xfer_dos_segment, xfer_dos_selector;
150 int nsects;
151 unsigned long int hd_offset;
152 struct info_disk_struct *data=(struct info_disk_struct *)disk_car->data;
153 nsects=count/disk_car->sector_size;
154 hd_offset=offset/disk_car->sector_size;
155
156 if(data->mode_enh==0)
157 { /* Limite CHS = 1023,255,63 = 8,064Mo ~= 7.8 Go */
158 int head, track, sector;
159 if(data->geo_phys.sectors_per_head==0)
160 {
161 log_critical("hd_pwrite: BUG geo_phys.sectors_per_head=0 !\n");
162 return -1;
163 }
164 sector=(hd_offset%data->geo_phys.sectors_per_head)+1;
165 hd_offset/=data->geo_phys.sectors_per_head;
166 head=hd_offset%data->geo_phys.heads_per_cylinder;
167 track=hd_offset/data->geo_phys.heads_per_cylinder;
168 if(track<1024)
169 {
170 const int res=biosdisk(3, data->disk, head, track, sector, nsects, buf);
171 return (res!=0 ? -res : count);
172 }
173 return -1;
174 }
175 if(cmd_dos_segment==0)
176 if(alloc_cmd_dos_buffer())
177 return -1;
178 if ( (xfer_dos_segment=__dpmi_allocate_dos_memory((count + 15) >> 4, &xfer_dos_selector)) == -1 )
179 return -1;
180 *(uint16_t*)&buf_cmd[0]=HD_RW_BUF_SIZ;
181 *(uint16_t*)&buf_cmd[2]=nsects;
182 *(uint32_t*)&buf_cmd[0x4]=xfer_dos_segment<<16;
183 *(uint32_t*)&buf_cmd[0x8]=hd_offset;
184 *(uint32_t*)&buf_cmd[0xC]=0;
185
186 r.x.ds = cmd_dos_segment;
187 r.x.si = 0;
188 r.h.dl = data->disk;
189 r.x.ax = 0x4300;
190 dosmemput(buf, count, xfer_dos_segment<<4);
191 dosmemput(&buf_cmd, HD_RW_BUF_SIZ, cmd_dos_segment<<4);
192 __dpmi_int(0x13, &r);
193 __dpmi_free_dos_memory(xfer_dos_selector);
194 return (r.h.ah!=0 ? -r.h.ah : count);
195 }
196
check_enh_bios(const unsigned int disk,const int verbose)197 static int check_enh_bios(const unsigned int disk, const int verbose)
198 {
199 __dpmi_regs r;
200 r.h.ah = 0x41;
201 r.x.bx = 0x55AA;
202 r.h.dl = disk;
203 __dpmi_int(0x13, &r);
204 if(r.x.bx != 0xAA55) /* INT 13 Extensions not installed */
205 {
206 if(verbose>0)
207 log_warning("Disk %02X - INT 13 Extensions not installed\n",disk);
208 return 0;
209 }
210 if(verbose>0)
211 {
212 log_info("Disk %02X ",disk);
213 switch(r.h.ah)
214 {
215 case 0x01:
216 log_info("Enhanced BIOS 1.x");
217 break;
218 case 0x20:
219 log_info("Enhanced BIOS 2.0 / EDD-1.0");
220 break;
221 case 0x21:
222 log_info("Enhanced BIOS 2.1 / EDD-1.1");
223 break;
224 case 0x30:
225 log_info("Enhanced BIOS EDD-3.0");
226 break;
227 default:
228 log_info("Enhanced BIOS unknown %02X",r.h.ah);
229 break;
230 }
231 if((r.x.cx & 1)!=0)
232 log_info(" - R/W/I");
233 if((r.x.cx & 4)!=0)
234 log_info(" - Identify");
235 log_info("\n");
236 }
237 return ((r.x.cx&1)!=0);
238 }
239
hd_identify_enh_bios(disk_t * disk_car,const int verbose)240 static int hd_identify_enh_bios(disk_t *disk_car,const int verbose)
241 {
242 uint64_t computed_size;
243 int compute_LBA=0;
244 __dpmi_regs r;
245 unsigned char buf[0x200]; /* Don't change it! */
246 struct info_disk_struct *data=(struct info_disk_struct *)disk_car->data;
247 if(cmd_dos_segment==0)
248 if(alloc_cmd_dos_buffer())
249 return 1;
250 buf[0]=HDPARM_BUF_SIZ;
251 buf[1]=0;
252 r.h.ah = 0x48;
253 r.x.ds = cmd_dos_segment;
254 r.x.si = 0;
255 r.h.dl = data->disk;
256 dosmemput(&buf, HDPARM_BUF_SIZ, cmd_dos_segment<<4);
257 __dpmi_int(0x13, &r);
258 dosmemget(cmd_dos_segment<<4, HDPARM_BUF_SIZ, &buf);
259 if(r.h.ah)
260 return 1;
261 disk_car->geom.cylinders=*(uint16_t*)&buf[0x04];
262 disk_car->geom.heads_per_cylinder=*(uint16_t*)&buf[0x08];
263 disk_car->geom.sectors_per_head=*(uint16_t*)&buf[0x0C];
264 disk_car->disk_size=(*(uint32_t*)&buf[0x10])*(uint64_t)disk_car->sector_size;
265 if(disk_car->disk_size==0)
266 {
267 if(disk_car->geom.cylinders==0 || disk_car->geom.heads_per_cylinder==0 || disk_car->geom.sectors_per_head==0)
268 {
269 if(verbose>0)
270 log_warning("hd_identify_enh_bios: No size returned by BIOS.\n");
271 return 1;
272 }
273 else
274 {
275 compute_LBA=1;
276 disk_car->disk_size=(uint64_t)disk_car->geom.cylinders*disk_car->geom.heads_per_cylinder*disk_car->geom.sectors_per_head*disk_car->sector_size;
277 if(verbose>0)
278 log_verbose("Computes LBA from CHS\n");
279 }
280 }
281 else
282 {
283 if(disk_car->geom.cylinders>0 && disk_car->geom.heads_per_cylinder>0 && disk_car->geom.sectors_per_head>0)
284 {
285 /* Some bios are buggy */
286 if(disk_car->disk_size>(uint64_t)(disk_car->geom.cylinders+1)*disk_car->geom.heads_per_cylinder*disk_car->geom.sectors_per_head*disk_car->sector_size)
287 {
288 disk_car->geom.cylinders=disk_car->disk_size /
289 disk_car->geom.heads_per_cylinder /
290 disk_car->geom.sectors_per_head /
291 disk_car->sector_size;
292 if(verbose>0)
293 log_verbose("Computes C from number of sectors\n");
294 }
295 }
296 else
297 {
298 if(verbose>0)
299 log_verbose("Computes CHS from number of sectors\n");
300 disk_car->geom.heads_per_cylinder=255;
301 disk_car->geom.sectors_per_head=63;
302 disk_car->geom.cylinders=disk_car->disk_size /
303 disk_car->geom.heads_per_cylinder /
304 disk_car->geom.sectors_per_head /
305 disk_car->sector_size;
306 }
307 }
308 if(disk_car->geom.sectors_per_head==0)
309 {
310 data->bad_geometry=1;
311 disk_car->geom.sectors_per_head=1;
312 log_critical("Incorrect number of sectors\n");
313 }
314 if(disk_car->geom.sectors_per_head>63)
315 {
316 /* data->bad_geometry=1; */
317 log_critical("Incorrect number of sectors\n");
318 }
319 if(disk_car->geom.heads_per_cylinder>255)
320 {
321 data->bad_geometry=1;
322 log_critical("Incorrect number of heads\n");
323 }
324 computed_size=(uint64_t)disk_car->geom.cylinders*disk_car->geom.heads_per_cylinder*disk_car->geom.sectors_per_head*disk_car->sector_size;
325 if(verbose>0 || data->bad_geometry!=0)
326 log_info("LBA %lu, computed %lu (CHS=%lu,%u,%u)\n",
327 (long unsigned)(disk_car->disk_size/disk_car->sector_size),
328 (long unsigned)(computed_size/disk_car->sector_size),
329 disk_car->geom.cylinders,
330 disk_car->geom.heads_per_cylinder,
331 disk_car->geom.sectors_per_head);
332 if(compute_LBA)
333 disk_car->disk_size=computed_size;
334 else
335 {
336 if(disk_car->disk_size < computed_size)
337 {
338 log_info("Computes LBA from CHS, previous value may be false.\n");
339 disk_car->disk_size=computed_size;
340 }
341 }
342 disk_car->disk_real_size=disk_car->disk_size;
343 data->geo_phys.cylinders=disk_car->geom.cylinders;
344 data->geo_phys.heads_per_cylinder=disk_car->geom.heads_per_cylinder;
345 data->geo_phys.sectors_per_head=disk_car->geom.sectors_per_head;
346 if(verbose>0)
347 {
348 log_info("hd_identify_enh_bios\n");
349 log_info("%s\n",disk_description(disk_car));
350 log_info("LBA size=%lu\n",(long unsigned)(disk_car->disk_size/disk_car->sector_size));
351 }
352 return 0;
353 }
354
hd_identify(const int verbose,const unsigned int disk,const int testdisk_mode)355 disk_t *hd_identify(const int verbose, const unsigned int disk, const int testdisk_mode)
356 {
357 unsigned char buf[0x200];
358 memset(buf,0,sizeof(buf));
359 /* standard BIOS access */
360 if(biosdisk(8,disk,0,0,1,1,buf))
361 return NULL;
362 if(verbose>1)
363 log_verbose("Disk %02X %u max %02X\n",disk,buf[2],(0x80+buf[2]-1));
364 if(disk>(unsigned int)(0x80+buf[2]-1))
365 return NULL;
366 {
367 char device[100];
368 struct info_disk_struct*data=(struct info_disk_struct*)MALLOC(sizeof(*data));
369 disk_t *disk_car=(disk_t *)MALLOC(sizeof(*disk_car));
370 data->disk=disk;
371 data->bad_geometry=0;
372 data->mode_enh=0;
373 disk_car->arch=&arch_none;
374 snprintf(device,sizeof(device),"/dev/sda%u",disk);
375 disk_car->device=strdup(device);
376 disk_car->model=NULL;
377 disk_car->write_used=0;
378 disk_car->autodetect=0;
379 disk_car->sector_size=DEFAULT_SECTOR_SIZE;
380 disk_car->description=disk_description;
381 disk_car->description_short=disk_description_short;
382 disk_car->pread=disk_pread;
383 disk_car->pwrite=((testdisk_mode&TESTDISK_O_RDWR)==TESTDISK_O_RDWR?disk_pwrite:disk_nopwrite);
384 disk_car->sync=disk_sync;
385 disk_car->access_mode=testdisk_mode;
386 disk_car->clean=disk_clean;
387 disk_car->data=data;
388 disk_car->geom.cylinders=1+(((buf[0] & 0x0C0)<<2)|buf[1]);
389 disk_car->geom.heads_per_cylinder=1+buf[3];
390 disk_car->geom.sectors_per_head=buf[0] & 0x3F;
391 if(disk_car->geom.heads_per_cylinder>255)
392 { /* Problem found by G Rowe */
393 log_critical("BIOS reports an invalid heads number\n");
394 data->bad_geometry=1;
395 disk_car->geom.heads_per_cylinder=255;
396 }
397 if(disk_car->geom.sectors_per_head==0)
398 { /* Problem found by Brian Barrett */
399 log_critical("BIOS reports an invalid number of sectors per head\n");
400 data->bad_geometry=1;
401 disk_car->geom.sectors_per_head=1;
402 }
403 disk_car->disk_size=(uint64_t)disk_car->geom.cylinders*disk_car->geom.heads_per_cylinder*disk_car->geom.sectors_per_head*disk_car->sector_size;
404 disk_car->disk_real_size=disk_car->disk_size;
405 data->geo_phys.cylinders=disk_car->geom.cylinders;
406 data->geo_phys.heads_per_cylinder=disk_car->geom.heads_per_cylinder;
407 data->geo_phys.sectors_per_head=disk_car->geom.sectors_per_head;
408 if(verbose>0)
409 log_info("%s\n",disk_description(disk_car));
410 if(check_enh_bios(disk,verbose))
411 {
412 /* enhanced BIOS access */
413 disk_t *param_disk_enh=(disk_t*)MALLOC(sizeof(*param_disk_enh));
414 param_disk_enh->write_used=0;
415 param_disk_enh->sector_size=disk_car->sector_size;
416 param_disk_enh->data=data;
417 data->mode_enh=1;
418 if(!hd_identify_enh_bios(param_disk_enh,verbose))
419 {
420 /* standard geometry H,S, compute C from LBA */
421 disk_car->disk_size=param_disk_enh->disk_size;
422 disk_car->disk_real_size=disk_car->disk_size;
423 disk_car->geom.cylinders=(disk_car->disk_size/disk_car->geom.heads_per_cylinder)/disk_car->geom.sectors_per_head/disk_car->sector_size;
424 }
425 else
426 data->mode_enh=0;
427 free(param_disk_enh);
428 }
429 disk_car->unit=UNIT_CHS;
430 return disk_car;
431 }
432 }
433
disk_description(disk_t * disk_car)434 const char *disk_description(disk_t *disk_car)
435 {
436 struct info_disk_struct *data=(struct info_disk_struct *)disk_car->data;
437 char buffer_disk_size[100];
438 size_to_unit(disk_car->disk_size, buffer_disk_size),
439 snprintf(disk_car->description_txt, sizeof(disk_car->description_txt),"Disk %2x - %s - CHS %lu %u %u%s",
440 data->disk, buffer_disk_size,
441 disk_car->geom.cylinders, disk_car->geom.heads_per_cylinder, disk_car->geom.sectors_per_head,
442 data->bad_geometry!=0?" (Buggy BIOS)":"");
443 return disk_car->description_txt;
444 }
445
disk_description_short(disk_t * disk_car)446 static const char *disk_description_short(disk_t *disk_car)
447 {
448 struct info_disk_struct *data=(struct info_disk_struct *)disk_car->data;
449 char buffer_disk_size[100];
450 size_to_unit(disk_car->disk_size, buffer_disk_size);
451 snprintf(disk_car->description_short_txt, sizeof(disk_car->description_txt),"Disk %2x - %s",
452 data->disk, buffer_disk_size);
453 return disk_car->description_short_txt;
454 }
455
disk_pread_aux(disk_t * disk_car,void * buf,const unsigned int count,const uint64_t offset)456 static int disk_pread_aux(disk_t *disk_car, void *buf, const unsigned int count, const uint64_t offset)
457 {
458 struct info_disk_struct *data=(struct info_disk_struct *)disk_car->data;
459 if(data->geo_phys.cylinders>0 && offset+count>disk_car->disk_size)
460 {
461 log_error("disk_pread_aux: Don't read after the end of the disk\n");
462 return -1;
463 }
464 {
465 uint64_t read_offset=0;
466 do
467 {
468 int i=0;
469 int rc;
470 unsigned int read_size;
471 read_size=count-read_offset>16*512?16*512:count-read_offset;
472 do
473 {
474 rc=hd_pread(disk_car, (char*)buf+read_offset, read_size, offset+read_offset);
475 if(rc < 0)
476 disk_reset_error(disk_car);
477 } while(rc!=read_size && rc!=-1 && ++i<MAX_IO_NBR);
478 // <0 invalid function in AH or invalid parameter
479 if(rc < 0)
480 {
481 log_error("disk_pread_aux failed ");
482 hd_report_error(disk_car, offset, count, -rc);
483 }
484 if(rc != read_size)
485 return (read_offset==0 ? rc : read_offset);
486 read_offset+=read_size;
487 } while(read_offset<count);
488 }
489 return count;
490 }
491
disk_pread(disk_t * disk_car,void * buf,const unsigned int count,const uint64_t offset)492 static int disk_pread(disk_t *disk_car, void *buf, const unsigned int count, const uint64_t offset)
493 {
494 return align_pread(&disk_pread_aux, disk_car, buf, count, offset);
495 }
496
disk_pwrite_aux(disk_t * disk_car,const void * buf,const unsigned int count,const uint64_t hd_offset)497 static int disk_pwrite_aux(disk_t *disk_car, const void *buf, const unsigned int count, const uint64_t hd_offset)
498 {
499 int i=0;
500 int rc;
501 disk_car->write_used=1;
502 {
503 rc=hd_pwrite(disk_car, buf, count, hd_offset);
504 if(rc < 0)
505 disk_reset_error(disk_car);
506 } while(rc==-4 && ++i<MAX_IO_NBR);
507 /* 4=sector not found/read error */
508 if(rc < 0)
509 {
510 log_error("disk_pwrite error\n");
511 hd_report_error(disk_car, hd_offset, count, -rc);
512 }
513 return rc;
514 }
515
disk_pwrite(disk_t * disk_car,const void * buf,const unsigned int count,const uint64_t offset)516 static int disk_pwrite(disk_t *disk_car, const void *buf, const unsigned int count, const uint64_t offset)
517 {
518 return align_pwrite(&disk_pread_aux, &disk_pwrite_aux, disk_car, buf, count, offset);
519 }
520
disk_nopwrite(disk_t * disk_car,const void * buf,const unsigned int count,const uint64_t offset)521 static int disk_nopwrite(disk_t *disk_car, const void *buf, const unsigned int count, const uint64_t offset)
522 {
523 struct info_disk_struct *data=(struct info_disk_struct *)disk_car->data;
524 log_warning("disk_nopwrite(%d,%u,buffer,%lu(%u/%u/%u)) write refused\n", data->disk,
525 (unsigned)(count/disk_car->sector_size),(long unsigned)(offset/disk_car->sector_size),
526 offset2cylinder(disk_car,offset),offset2head(disk_car,offset),offset2sector(disk_car,offset));
527 return -1;
528 }
529
disk_sync(disk_t * disk_car)530 static int disk_sync(disk_t *disk_car)
531 {
532 errno=EINVAL;
533 return -1;
534 }
535
disk_clean(disk_t * disk_car)536 static void disk_clean(disk_t *disk_car)
537 {
538 /*
539 if(disk_car->data!=NULL)
540 {
541 struct info_disk_struct *data=disk_car->data;
542 }
543 */
544 generic_clean(disk_car);
545 }
546
hd_report_error(disk_t * disk_car,const uint64_t hd_offset,const unsigned int count,const int rc)547 static int hd_report_error(disk_t *disk_car, const uint64_t hd_offset, const unsigned int count, const int rc)
548 {
549 log_error(" lba=%lu(%u/%u/%u) nbr_sector=%u, rc=%d\n",(long unsigned int)(hd_offset/disk_car->sector_size),
550 offset2cylinder(disk_car,hd_offset),offset2head(disk_car,hd_offset),offset2sector(disk_car,hd_offset),
551 count/disk_car->sector_size,rc);
552 switch(rc)
553 {
554 case 0x00: log_error("successful completion"); break;
555 case 0x01: log_error("invalid function in AH or invalid parameter"); break;
556 case 0x02: log_error("address mark not found"); break;
557 case 0x03: log_error("disk write-protected"); break;
558 case 0x04: log_error("sector not found/read error"); break;
559 case 0x05: log_error("reset failed (hard disk)"); break;
560 case 0x06: log_error("disk changed (floppy)"); break;
561 case 0x07: log_error("drive parameter activity failed (hard disk)"); break;
562 case 0x08: log_error("DMA overrun"); break;
563 case 0x09: log_error("data boundary error (attempted DMA across 64K boundary or >80h sectors)"); break;
564 case 0x0A: log_error("bad sector detected (hard disk)"); break;
565 case 0x0B: log_error("bad track detected (hard disk)"); break;
566 case 0x0C: log_error("unsupported track or invalid media"); break;
567 case 0x0D: log_error("invalid number of sectors on format (PS/2 hard disk)"); break;
568 case 0x0E: log_error("control data address mark detected (hard disk)"); break;
569 case 0x0F: log_error("DMA arbitration level out of range (hard disk)"); break;
570 case 0x10: log_error("uncorrectable CRC or ECC error on read"); break;
571 case 0x11: log_error("data ECC corrected (hard disk)"); break;
572 case 0x20: log_error("controller failure"); break;
573 case 0x31: log_error("no media in drive (IBM/MS INT 13 extensions)"); break;
574 case 0x32: log_error("incorrect drive type stored in CMOS (Compaq)"); break;
575 case 0x40: log_error("seek failed"); break;
576 case 0x80: log_error("timeout (not ready)"); break;
577 case 0xAA: log_error("drive not ready (hard disk)"); break;
578 case 0xB0: log_error("volume not locked in drive (INT 13 extensions)"); break;
579 case 0xB1: log_error("volume locked in drive (INT 13 extensions)"); break;
580 case 0xB2: log_error("volume not removable (INT 13 extensions)"); break;
581 case 0xB3: log_error("volume in use (INT 13 extensions)"); break;
582 case 0xB4: log_error("lock count exceeded (INT 13 extensions)"); break;
583 case 0xB5: log_error("valid eject request failed (INT 13 extensions)"); break;
584 case 0xB6: log_error("volume present but read protected (INT 13 extensions)"); break;
585 case 0xBB: log_error("undefined error (hard disk)"); break;
586 case 0xCC: log_error("write fault (hard disk)"); break;
587 case 0xE0: log_error("status register error (hard disk)"); break;
588 case 0xFF: log_error("sense operation failed (hard disk)"); break;
589 }
590 log_error("\n");
591 return 0;
592 }
593 #endif
594