LXR qemu/tests/test-blockjob.c

   1/*
   2 * Blockjob tests
   3 *
   4 * Copyright Igalia, S.L. 2016
   5 *
   6 * Authors:
   7 *  Alberto Garcia   <berto@igalia.com>
   8 *
   9 * This work is licensed under the terms of the GNU LGPL, version 2 or later.
  10 * See the COPYING.LIB file in the top-level directory.
  11 */
  12
  13#include "qemu/osdep.h"
  14#include "qapi/error.h"
  15#include "qemu/main-loop.h"
  16#include "block/blockjob_int.h"
  17#include "sysemu/block-backend.h"
  18
  19static const BlockJobDriver test_block_job_driver = {
  20    .instance_size = sizeof(BlockJob),
  21};
  22
  23static void block_job_cb(void *opaque, int ret)
  24{
  25}
  26
  27static BlockJob *do_test_id(BlockBackend *blk, const char *id,
  28                            bool should_succeed)
  29{
  30    BlockJob *job;
  31    Error *errp = NULL;
  32
  33    job = block_job_create(id, &test_block_job_driver, blk_bs(blk),
  34                           0, BLK_PERM_ALL, 0, BLOCK_JOB_DEFAULT, block_job_cb,
  35                           NULL, &errp);
  36    if (should_succeed) {
  37        g_assert_null(errp);
  38        g_assert_nonnull(job);
  39        if (id) {
  40            g_assert_cmpstr(job->id, ==, id);
  41        } else {
  42            g_assert_cmpstr(job->id, ==, blk_name(blk));
  43        }
  44    } else {
  45        g_assert_nonnull(errp);
  46        g_assert_null(job);
  47        error_free(errp);
  48    }
  49
  50    return job;
  51}
  52
  53/* This creates a BlockBackend (optionally with a name) with a
  54 * BlockDriverState inserted. */
  55static BlockBackend *create_blk(const char *name)
  56{
  57    /* No I/O is performed on this device */
  58    BlockBackend *blk = blk_new(0, BLK_PERM_ALL);
  59    BlockDriverState *bs;
  60
  61    bs = bdrv_open("null-co://", NULL, NULL, 0, &error_abort);
  62    g_assert_nonnull(bs);
  63
  64    blk_insert_bs(blk, bs, &error_abort);
  65    bdrv_unref(bs);
  66
  67    if (name) {
  68        Error *errp = NULL;
  69        monitor_add_blk(blk, name, &errp);
  70        g_assert_null(errp);
  71    }
  72
  73    return blk;
  74}
  75
  76/* This destroys the backend */
  77static void destroy_blk(BlockBackend *blk)
  78{
  79    if (blk_name(blk)[0] != '\0') {
  80        monitor_remove_blk(blk);
  81    }
  82
  83    blk_remove_bs(blk);
  84    blk_unref(blk);
  85}
  86
  87static void test_job_ids(void)
  88{
  89    BlockBackend *blk[3];
  90    BlockJob *job[3];
  91
  92    blk[0] = create_blk(NULL);
  93    blk[1] = create_blk("drive1");
  94    blk[2] = create_blk("drive2");
  95
  96    /* No job ID provided and the block backend has no name */
  97    job[0] = do_test_id(blk[0], NULL, false);
  98
  99    /* These are all invalid job IDs */
 100    job[0] = do_test_id(blk[0], "0id", false);
 101    job[0] = do_test_id(blk[0], "",    false);
 102    job[0] = do_test_id(blk[0], "   ", false);
 103    job[0] = do_test_id(blk[0], "123", false);
 104    job[0] = do_test_id(blk[0], "_id", false);
 105    job[0] = do_test_id(blk[0], "-id", false);
 106    job[0] = do_test_id(blk[0], ".id", false);
 107    job[0] = do_test_id(blk[0], "#id", false);
 108
 109    /* This one is valid */
 110    job[0] = do_test_id(blk[0], "id0", true);
 111
 112    /* We cannot have two jobs in the same BDS */
 113    do_test_id(blk[0], "id1", false);
 114
 115    /* Duplicate job IDs are not allowed */
 116    job[1] = do_test_id(blk[1], "id0", false);
 117
 118    /* But once job[0] finishes we can reuse its ID */
 119    block_job_early_fail(job[0]);
 120    job[1] = do_test_id(blk[1], "id0", true);
 121
 122    /* No job ID specified, defaults to the backend name ('drive1') */
 123    block_job_early_fail(job[1]);
 124    job[1] = do_test_id(blk[1], NULL, true);
 125
 126    /* Duplicate job ID */
 127    job[2] = do_test_id(blk[2], "drive1", false);
 128
 129    /* The ID of job[2] would default to 'drive2' but it is already in use */
 130    job[0] = do_test_id(blk[0], "drive2", true);
 131    job[2] = do_test_id(blk[2], NULL, false);
 132
 133    /* This one is valid */
 134    job[2] = do_test_id(blk[2], "id_2", true);
 135
 136    block_job_early_fail(job[0]);
 137    block_job_early_fail(job[1]);
 138    block_job_early_fail(job[2]);
 139
 140    destroy_blk(blk[0]);
 141    destroy_blk(blk[1]);
 142    destroy_blk(blk[2]);
 143}
 144
 145int main(int argc, char **argv)
 146{
 147    qemu_init_main_loop(&error_abort);
 148    bdrv_init();
 149
 150    g_test_init(&argc, &argv, NULL);
 151    g_test_add_func("/blockjob/ids", test_job_ids);
 152    return g_test_run();
 153}
 154