| 1 | /*
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| 2 | * Copyright (c) 2025 Miroslav Cimerman
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | /** @addtogroup hr
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| 30 | * @{
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| 31 | */
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| 32 | /**
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| 33 | * @file
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| 34 | */
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| 35 |
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| 36 | #include <block.h>
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| 37 | #include <errno.h>
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| 38 | #include <hr.h>
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| 39 | #include <inttypes.h>
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| 40 | #include <stdio.h>
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| 41 | #include <str_error.h>
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| 42 |
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| 43 | #include "io.h"
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| 44 | #include "util.h"
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| 45 | #include "var.h"
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| 46 |
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| 47 | errno_t hr_io_worker(void *arg)
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| 48 | {
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| 49 | hr_io_t *io = arg;
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| 50 | hr_extent_t *extents = (hr_extent_t *)&io->vol->extents;
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| 51 | size_t ext_idx = io->extent;
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| 52 | errno_t rc;
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| 53 |
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| 54 | const char *debug_type_str = NULL;
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| 55 | switch (io->type) {
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| 56 | case HR_BD_SYNC:
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| 57 | debug_type_str = "SYNC";
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| 58 | break;
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| 59 | case HR_BD_READ:
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| 60 | debug_type_str = "READ";
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| 61 | break;
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| 62 | case HR_BD_WRITE:
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| 63 | debug_type_str = "WRITE";
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| 64 | break;
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| 65 | }
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| 66 |
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| 67 | HR_DEBUG("%s WORKER (%p) on extent: %zu, ba: %" PRIu64 ", "
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| 68 | "cnt: %" PRIu64 "\n",
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| 69 | debug_type_str, io, io->extent, io->ba, io->cnt);
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| 70 |
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| 71 | switch (io->type) {
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| 72 | case HR_BD_SYNC:
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| 73 | rc = block_sync_cache(extents[ext_idx].svc_id,
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| 74 | io->ba, io->cnt);
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| 75 | if (rc == ENOTSUP)
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| 76 | rc = EOK;
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| 77 | break;
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| 78 | case HR_BD_READ:
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| 79 | rc = block_read_direct(extents[ext_idx].svc_id, io->ba,
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| 80 | io->cnt, io->data_read);
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| 81 | break;
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| 82 | case HR_BD_WRITE:
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| 83 | rc = block_write_direct(extents[ext_idx].svc_id, io->ba,
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| 84 | io->cnt, io->data_write);
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| 85 | break;
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| 86 | default:
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| 87 | return EINVAL;
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| 88 | }
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| 89 |
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| 90 | HR_DEBUG("WORKER (%p) rc: %s\n", io, str_error(rc));
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| 91 |
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| 92 | /*
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| 93 | * We don't have to invalidate extents who got ENOMEM
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| 94 | * on READ/SYNC. But when we get ENOMEM on a WRITE, we have
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| 95 | * to invalidate it, because there could have been
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| 96 | * other writes, there is no way to rollback.
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| 97 | */
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| 98 | if (rc != EOK && (rc != ENOMEM || io->type == HR_BD_WRITE))
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| 99 | io->state_callback(io->vol, io->extent, rc);
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| 100 |
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| 101 | return rc;
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| 102 | }
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| 103 |
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| 104 | /** @}
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| 105 | */
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