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),
  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. */
  55 static 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 */
  77 static 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
  87 static 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_unref(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_unref(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_unref(job[0]);
 137     block_job_unref(job[1]);
 138     block_job_unref(job[2]);
 139
 140     destroy_blk(blk[0]);
 141     destroy_blk(blk[1]);
 142     destroy_blk(blk[2]);
 143 }
 144
 145 int 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 }