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
  19 static const BlockJobDriver test_block_job_driver = {
  20     .instance_size = sizeof(BlockJob),
  21 };
  22
  23 static void block_job_cb(void *opaque, int ret)
  24 {
  25 }
  26
  27 static 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. */
  54 static BlockBackend *create_blk(const char *name)
  55 {
  56     BlockBackend *blk = blk_new();
  57     BlockDriverState *bs;
  58
  59     bs = bdrv_open("null-co://", NULL, NULL, 0, &error_abort);
  60     g_assert_nonnull(bs);
  61
  62     blk_insert_bs(blk, bs);
  63     bdrv_unref(bs);
  64
  65     if (name) {
  66         Error *errp = NULL;
  67         monitor_add_blk(blk, name, &errp);
  68         g_assert_null(errp);
  69     }
  70
  71     return blk;
  72 }
  73
  74 /* This destroys the backend */
  75 static void destroy_blk(BlockBackend *blk)
  76 {
  77     if (blk_name(blk)[0] != '\0') {
  78         monitor_remove_blk(blk);
  79     }
  80
  81     blk_remove_bs(blk);
  82     blk_unref(blk);
  83 }
  84
  85 static void test_job_ids(void)
  86 {
  87     BlockBackend *blk[3];
  88     BlockJob *job[3];
  89
  90     blk[0] = create_blk(NULL);
  91     blk[1] = create_blk("drive1");
  92     blk[2] = create_blk("drive2");
  93
  94     /* No job ID provided and the block backend has no name */
  95     job[0] = do_test_id(blk[0], NULL, false);
  96
  97     /* These are all invalid job IDs */
  98     job[0] = do_test_id(blk[0], "0id", false);
  99     job[0] = do_test_id(blk[0], "",    false);
 100     job[0] = do_test_id(blk[0], "   ", false);
 101     job[0] = do_test_id(blk[0], "123", false);
 102     job[0] = do_test_id(blk[0], "_id", false);
 103     job[0] = do_test_id(blk[0], "-id", false);
 104     job[0] = do_test_id(blk[0], ".id", false);
 105     job[0] = do_test_id(blk[0], "#id", false);
 106
 107     /* This one is valid */
 108     job[0] = do_test_id(blk[0], "id0", true);
 109
 110     /* We cannot have two jobs in the same BDS */
 111     do_test_id(blk[0], "id1", false);
 112
 113     /* Duplicate job IDs are not allowed */
 114     job[1] = do_test_id(blk[1], "id0", false);
 115
 116     /* But once job[0] finishes we can reuse its ID */
 117     block_job_unref(job[0]);
 118     job[1] = do_test_id(blk[1], "id0", true);
 119
 120     /* No job ID specified, defaults to the backend name ('drive1') */
 121     block_job_unref(job[1]);
 122     job[1] = do_test_id(blk[1], NULL, true);
 123
 124     /* Duplicate job ID */
 125     job[2] = do_test_id(blk[2], "drive1", false);
 126
 127     /* The ID of job[2] would default to 'drive2' but it is already in use */
 128     job[0] = do_test_id(blk[0], "drive2", true);
 129     job[2] = do_test_id(blk[2], NULL, false);
 130
 131     /* This one is valid */
 132     job[2] = do_test_id(blk[2], "id_2", true);
 133
 134     block_job_unref(job[0]);
 135     block_job_unref(job[1]);
 136     block_job_unref(job[2]);
 137
 138     destroy_blk(blk[0]);
 139     destroy_blk(blk[1]);
 140     destroy_blk(blk[2]);
 141 }
 142
 143 int main(int argc, char **argv)
 144 {
 145     qemu_init_main_loop(&error_abort);
 146     bdrv_init();
 147
 148     g_test_init(&argc, &argv, NULL);
 149     g_test_add_func("/blockjob/ids", test_job_ids);
 150     return g_test_run();
 151 }