dm-dust.c (4f7f590b152444c1403ece9eeeddd1e8b22ba04e) dm-dust.c (0c248ea27fc88cf8a3035ba0ed75b210be9abf80)
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (c) 2018 Red Hat, Inc.
4 *
5 * This is a test "dust" device, which fails reads on specified
6 * sectors, emulating the behavior of a hard disk drive sending
7 * a "Read Medium Error" sense.
8 *

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279 if (!__dust_clear_badblocks(&badblocklist, badblock_count))
280 DMEMIT("%s: no badblocks found", __func__);
281 else
282 DMEMIT("%s: badblocks cleared", __func__);
283
284 return 1;
285}
286
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (c) 2018 Red Hat, Inc.
4 *
5 * This is a test "dust" device, which fails reads on specified
6 * sectors, emulating the behavior of a hard disk drive sending
7 * a "Read Medium Error" sense.
8 *

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279 if (!__dust_clear_badblocks(&badblocklist, badblock_count))
280 DMEMIT("%s: no badblocks found", __func__);
281 else
282 DMEMIT("%s: badblocks cleared", __func__);
283
284 return 1;
285}
286
287static int dust_list_badblocks(struct dust_device *dd, char *result, unsigned int maxlen,
288 unsigned int *sz_ptr)
289{
290 unsigned long flags;
291 struct rb_root badblocklist;
292 struct rb_node *node;
293 struct badblock *bblk;
294 unsigned int sz = *sz_ptr;
295 unsigned long long num = 0;
296
297 spin_lock_irqsave(&dd->dust_lock, flags);
298 badblocklist = dd->badblocklist;
299 for (node = rb_first(&badblocklist); node; node = rb_next(node)) {
300 bblk = rb_entry(node, struct badblock, node);
301 DMEMIT("%llu\n", bblk->bb);
302 num++;
303 }
304
305 spin_unlock_irqrestore(&dd->dust_lock, flags);
306 if (!num)
307 DMEMIT("No blocks in badblocklist");
308
309 return 1;
310}
311
287/*
288 * Target parameters:
289 *
290 * <device_path> <offset> <blksz>
291 *
292 * device_path: path to the block device
293 * offset: offset to data area from start of device_path
294 * blksz: block size (minimum 512, maximum 1073741824, must be a power of 2)

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422 } else if (!strcasecmp(argv[0], "clearbadblocks")) {
423 r = dust_clear_badblocks(dd, result, maxlen, &sz);
424 } else if (!strcasecmp(argv[0], "quiet")) {
425 if (!dd->quiet_mode)
426 dd->quiet_mode = true;
427 else
428 dd->quiet_mode = false;
429 r = 0;
312/*
313 * Target parameters:
314 *
315 * <device_path> <offset> <blksz>
316 *
317 * device_path: path to the block device
318 * offset: offset to data area from start of device_path
319 * blksz: block size (minimum 512, maximum 1073741824, must be a power of 2)

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447 } else if (!strcasecmp(argv[0], "clearbadblocks")) {
448 r = dust_clear_badblocks(dd, result, maxlen, &sz);
449 } else if (!strcasecmp(argv[0], "quiet")) {
450 if (!dd->quiet_mode)
451 dd->quiet_mode = true;
452 else
453 dd->quiet_mode = false;
454 r = 0;
455 } else if (!strcasecmp(argv[0], "listbadblocks")) {
456 r = dust_list_badblocks(dd, result, maxlen, &sz);
430 } else {
431 invalid_msg = true;
432 }
433 } else if (argc == 2) {
434 if (sscanf(argv[1], "%llu%c", &tmp, &dummy) != 1)
435 return r;
436
437 block = tmp;

--- 127 unchanged lines hidden --- 		457 } else {
458 invalid_msg = true;
459 }
460 } else if (argc == 2) {
461 if (sscanf(argv[1], "%llu%c", &tmp, &dummy) != 1)
462 return r;
463
464 block = tmp;

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