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), 0,
  34                           BLOCK_JOB_DEFAULT, block_job_cb, NULL, &errp);
  35    if (should_succeed) {
  36        g_assert_null(errp);
  37        g_assert_nonnull(job);
  38        if (id) {
  39            g_assert_cmpstr(job->id, ==, id);
  40        } else {
  41            g_assert_cmpstr(job->id, ==, blk_name(blk));
  42        }
  43    } else {
  44        g_assert_nonnull(errp);
  45        g_assert_null(job);
  46        error_free(errp);
  47    }
  48
  49    return job;
  50}
  51
  52/* This creates a BlockBackend (optionally with a name) with a
  53 * BlockDriverState inserted. */
  54static BlockBackend *create_blk(const char *name)
  55{
  56    BlockBackend *blk = blk_new();
  57    BlockDriverState *bs = bdrv_new();
  58
  59    blk_insert_bs(blk, bs);
  60    bdrv_unref(bs);
  61
  62    if (name) {
  63        Error *errp = NULL;
  64        monitor_add_blk(blk, name, &errp);
  65        g_assert_null(errp);
  66    }
  67
  68    return blk;
  69}
  70
  71/* This destroys the backend */
  72static void destroy_blk(BlockBackend *blk)
  73{
  74    if (blk_name(blk)[0] != '\0') {
  75        monitor_remove_blk(blk);
  76    }
  77
  78    blk_remove_bs(blk);
  79    blk_unref(blk);
  80}
  81
  82static void test_job_ids(void)
  83{
  84    BlockBackend *blk[3];
  85    BlockJob *job[3];
  86
  87    blk[0] = create_blk(NULL);
  88    blk[1] = create_blk("drive1");
  89    blk[2] = create_blk("drive2");
  90
  91    /* No job ID provided and the block backend has no name */
  92    job[0] = do_test_id(blk[0], NULL, false);
  93
  94    /* These are all invalid job IDs */
  95    job[0] = do_test_id(blk[0], "0id", false);
  96    job[0] = do_test_id(blk[0], "",    false);
  97    job[0] = do_test_id(blk[0], "   ", false);
  98    job[0] = do_test_id(blk[0], "123", false);
  99    job[0] = do_test_id(blk[0], "_id", false);
 100    job[0] = do_test_id(blk[0], "-id", false);
 101    job[0] = do_test_id(blk[0], ".id", false);
 102    job[0] = do_test_id(blk[0], "#id", false);
 103
 104    /* This one is valid */
 105    job[0] = do_test_id(blk[0], "id0", true);
 106
 107    /* We cannot have two jobs in the same BDS */
 108    do_test_id(blk[0], "id1", false);
 109
 110    /* Duplicate job IDs are not allowed */
 111    job[1] = do_test_id(blk[1], "id0", false);
 112
 113    /* But once job[0] finishes we can reuse its ID */
 114    block_job_unref(job[0]);
 115    job[1] = do_test_id(blk[1], "id0", true);
 116
 117    /* No job ID specified, defaults to the backend name ('drive1') */
 118    block_job_unref(job[1]);
 119    job[1] = do_test_id(blk[1], NULL, true);
 120
 121    /* Duplicate job ID */
 122    job[2] = do_test_id(blk[2], "drive1", false);
 123
 124    /* The ID of job[2] would default to 'drive2' but it is already in use */
 125    job[0] = do_test_id(blk[0], "drive2", true);
 126    job[2] = do_test_id(blk[2], NULL, false);
 127
 128    /* This one is valid */
 129    job[2] = do_test_id(blk[2], "id_2", true);
 130
 131    block_job_unref(job[0]);
 132    block_job_unref(job[1]);
 133    block_job_unref(job[2]);
 134
 135    destroy_blk(blk[0]);
 136    destroy_blk(blk[1]);
 137    destroy_blk(blk[2]);
 138}
 139
 140int main(int argc, char **argv)
 141{
 142    qemu_init_main_loop(&error_abort);
 143
 144    g_test_init(&argc, &argv, NULL);
 145    g_test_add_func("/blockjob/ids", test_job_ids);
 146    return g_test_run();
 147}
 148