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-rw-r--r--tests/test-block-iothread.c372
1 files changed, 372 insertions, 0 deletions
diff --git a/tests/test-block-iothread.c b/tests/test-block-iothread.c
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+++ b/tests/test-block-iothread.c
@@ -0,0 +1,372 @@
+/*
+ * Block tests for iothreads
+ *
+ * Copyright (c) 2018 Kevin Wolf <kwolf@redhat.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "qemu/osdep.h"
+#include "block/block.h"
+#include "block/blockjob_int.h"
+#include "sysemu/block-backend.h"
+#include "qapi/error.h"
+#include "iothread.h"
+
+static int coroutine_fn bdrv_test_co_prwv(BlockDriverState *bs,
+ uint64_t offset, uint64_t bytes,
+ QEMUIOVector *qiov, int flags)
+{
+ return 0;
+}
+
+static int coroutine_fn bdrv_test_co_pdiscard(BlockDriverState *bs,
+ int64_t offset, int bytes)
+{
+ return 0;
+}
+
+static int coroutine_fn
+bdrv_test_co_truncate(BlockDriverState *bs, int64_t offset,
+ PreallocMode prealloc, Error **errp)
+{
+ return 0;
+}
+
+static int coroutine_fn bdrv_test_co_block_status(BlockDriverState *bs,
+ bool want_zero,
+ int64_t offset, int64_t count,
+ int64_t *pnum, int64_t *map,
+ BlockDriverState **file)
+{
+ *pnum = count;
+ return 0;
+}
+
+static BlockDriver bdrv_test = {
+ .format_name = "test",
+ .instance_size = 1,
+
+ .bdrv_co_preadv = bdrv_test_co_prwv,
+ .bdrv_co_pwritev = bdrv_test_co_prwv,
+ .bdrv_co_pdiscard = bdrv_test_co_pdiscard,
+ .bdrv_co_truncate = bdrv_test_co_truncate,
+ .bdrv_co_block_status = bdrv_test_co_block_status,
+};
+
+static void test_sync_op_pread(BdrvChild *c)
+{
+ uint8_t buf[512];
+ int ret;
+
+ /* Success */
+ ret = bdrv_pread(c, 0, buf, sizeof(buf));
+ g_assert_cmpint(ret, ==, 512);
+
+ /* Early error: Negative offset */
+ ret = bdrv_pread(c, -2, buf, sizeof(buf));
+ g_assert_cmpint(ret, ==, -EIO);
+}
+
+static void test_sync_op_pwrite(BdrvChild *c)
+{
+ uint8_t buf[512];
+ int ret;
+
+ /* Success */
+ ret = bdrv_pwrite(c, 0, buf, sizeof(buf));
+ g_assert_cmpint(ret, ==, 512);
+
+ /* Early error: Negative offset */
+ ret = bdrv_pwrite(c, -2, buf, sizeof(buf));
+ g_assert_cmpint(ret, ==, -EIO);
+}
+
+static void test_sync_op_blk_pread(BlockBackend *blk)
+{
+ uint8_t buf[512];
+ int ret;
+
+ /* Success */
+ ret = blk_pread(blk, 0, buf, sizeof(buf));
+ g_assert_cmpint(ret, ==, 512);
+
+ /* Early error: Negative offset */
+ ret = blk_pread(blk, -2, buf, sizeof(buf));
+ g_assert_cmpint(ret, ==, -EIO);
+}
+
+static void test_sync_op_blk_pwrite(BlockBackend *blk)
+{
+ uint8_t buf[512];
+ int ret;
+
+ /* Success */
+ ret = blk_pwrite(blk, 0, buf, sizeof(buf), 0);
+ g_assert_cmpint(ret, ==, 512);
+
+ /* Early error: Negative offset */
+ ret = blk_pwrite(blk, -2, buf, sizeof(buf), 0);
+ g_assert_cmpint(ret, ==, -EIO);
+}
+
+static void test_sync_op_load_vmstate(BdrvChild *c)
+{
+ uint8_t buf[512];
+ int ret;
+
+ /* Error: Driver does not support snapshots */
+ ret = bdrv_load_vmstate(c->bs, buf, 0, sizeof(buf));
+ g_assert_cmpint(ret, ==, -ENOTSUP);
+}
+
+static void test_sync_op_save_vmstate(BdrvChild *c)
+{
+ uint8_t buf[512];
+ int ret;
+
+ /* Error: Driver does not support snapshots */
+ ret = bdrv_save_vmstate(c->bs, buf, 0, sizeof(buf));
+ g_assert_cmpint(ret, ==, -ENOTSUP);
+}
+
+static void test_sync_op_pdiscard(BdrvChild *c)
+{
+ int ret;
+
+ /* Normal success path */
+ c->bs->open_flags |= BDRV_O_UNMAP;
+ ret = bdrv_pdiscard(c, 0, 512);
+ g_assert_cmpint(ret, ==, 0);
+
+ /* Early success: UNMAP not supported */
+ c->bs->open_flags &= ~BDRV_O_UNMAP;
+ ret = bdrv_pdiscard(c, 0, 512);
+ g_assert_cmpint(ret, ==, 0);
+
+ /* Early error: Negative offset */
+ ret = bdrv_pdiscard(c, -2, 512);
+ g_assert_cmpint(ret, ==, -EIO);
+}
+
+static void test_sync_op_blk_pdiscard(BlockBackend *blk)
+{
+ int ret;
+
+ /* Early success: UNMAP not supported */
+ ret = blk_pdiscard(blk, 0, 512);
+ g_assert_cmpint(ret, ==, 0);
+
+ /* Early error: Negative offset */
+ ret = blk_pdiscard(blk, -2, 512);
+ g_assert_cmpint(ret, ==, -EIO);
+}
+
+static void test_sync_op_truncate(BdrvChild *c)
+{
+ int ret;
+
+ /* Normal success path */
+ ret = bdrv_truncate(c, 65536, PREALLOC_MODE_OFF, NULL);
+ g_assert_cmpint(ret, ==, 0);
+
+ /* Early error: Negative offset */
+ ret = bdrv_truncate(c, -2, PREALLOC_MODE_OFF, NULL);
+ g_assert_cmpint(ret, ==, -EINVAL);
+
+ /* Error: Read-only image */
+ c->bs->read_only = true;
+ c->bs->open_flags &= ~BDRV_O_RDWR;
+
+ ret = bdrv_truncate(c, 65536, PREALLOC_MODE_OFF, NULL);
+ g_assert_cmpint(ret, ==, -EACCES);
+
+ c->bs->read_only = false;
+ c->bs->open_flags |= BDRV_O_RDWR;
+}
+
+static void test_sync_op_block_status(BdrvChild *c)
+{
+ int ret;
+ int64_t n;
+
+ /* Normal success path */
+ ret = bdrv_is_allocated(c->bs, 0, 65536, &n);
+ g_assert_cmpint(ret, ==, 0);
+
+ /* Early success: No driver support */
+ bdrv_test.bdrv_co_block_status = NULL;
+ ret = bdrv_is_allocated(c->bs, 0, 65536, &n);
+ g_assert_cmpint(ret, ==, 1);
+
+ /* Early success: bytes = 0 */
+ ret = bdrv_is_allocated(c->bs, 0, 0, &n);
+ g_assert_cmpint(ret, ==, 0);
+
+ /* Early success: Offset > image size*/
+ ret = bdrv_is_allocated(c->bs, 0x1000000, 0x1000000, &n);
+ g_assert_cmpint(ret, ==, 0);
+}
+
+static void test_sync_op_flush(BdrvChild *c)
+{
+ int ret;
+
+ /* Normal success path */
+ ret = bdrv_flush(c->bs);
+ g_assert_cmpint(ret, ==, 0);
+
+ /* Early success: Read-only image */
+ c->bs->read_only = true;
+ c->bs->open_flags &= ~BDRV_O_RDWR;
+
+ ret = bdrv_flush(c->bs);
+ g_assert_cmpint(ret, ==, 0);
+
+ c->bs->read_only = false;
+ c->bs->open_flags |= BDRV_O_RDWR;
+}
+
+static void test_sync_op_blk_flush(BlockBackend *blk)
+{
+ BlockDriverState *bs = blk_bs(blk);
+ int ret;
+
+ /* Normal success path */
+ ret = blk_flush(blk);
+ g_assert_cmpint(ret, ==, 0);
+
+ /* Early success: Read-only image */
+ bs->read_only = true;
+ bs->open_flags &= ~BDRV_O_RDWR;
+
+ ret = blk_flush(blk);
+ g_assert_cmpint(ret, ==, 0);
+
+ bs->read_only = false;
+ bs->open_flags |= BDRV_O_RDWR;
+}
+
+static void test_sync_op_check(BdrvChild *c)
+{
+ BdrvCheckResult result;
+ int ret;
+
+ /* Error: Driver does not implement check */
+ ret = bdrv_check(c->bs, &result, 0);
+ g_assert_cmpint(ret, ==, -ENOTSUP);
+}
+
+static void test_sync_op_invalidate_cache(BdrvChild *c)
+{
+ /* Early success: Image is not inactive */
+ bdrv_invalidate_cache(c->bs, NULL);
+}
+
+
+typedef struct SyncOpTest {
+ const char *name;
+ void (*fn)(BdrvChild *c);
+ void (*blkfn)(BlockBackend *blk);
+} SyncOpTest;
+
+const SyncOpTest sync_op_tests[] = {
+ {
+ .name = "/sync-op/pread",
+ .fn = test_sync_op_pread,
+ .blkfn = test_sync_op_blk_pread,
+ }, {
+ .name = "/sync-op/pwrite",
+ .fn = test_sync_op_pwrite,
+ .blkfn = test_sync_op_blk_pwrite,
+ }, {
+ .name = "/sync-op/load_vmstate",
+ .fn = test_sync_op_load_vmstate,
+ }, {
+ .name = "/sync-op/save_vmstate",
+ .fn = test_sync_op_save_vmstate,
+ }, {
+ .name = "/sync-op/pdiscard",
+ .fn = test_sync_op_pdiscard,
+ .blkfn = test_sync_op_blk_pdiscard,
+ }, {
+ .name = "/sync-op/truncate",
+ .fn = test_sync_op_truncate,
+ }, {
+ .name = "/sync-op/block_status",
+ .fn = test_sync_op_block_status,
+ }, {
+ .name = "/sync-op/flush",
+ .fn = test_sync_op_flush,
+ .blkfn = test_sync_op_blk_flush,
+ }, {
+ .name = "/sync-op/check",
+ .fn = test_sync_op_check,
+ }, {
+ .name = "/sync-op/invalidate_cache",
+ .fn = test_sync_op_invalidate_cache,
+ },
+};
+
+/* Test synchronous operations that run in a different iothread, so we have to
+ * poll for the coroutine there to return. */
+static void test_sync_op(const void *opaque)
+{
+ const SyncOpTest *t = opaque;
+ IOThread *iothread = iothread_new();
+ AioContext *ctx = iothread_get_aio_context(iothread);
+ BlockBackend *blk;
+ BlockDriverState *bs;
+ BdrvChild *c;
+
+ blk = blk_new(BLK_PERM_ALL, BLK_PERM_ALL);
+ bs = bdrv_new_open_driver(&bdrv_test, "base", BDRV_O_RDWR, &error_abort);
+ bs->total_sectors = 65536 / BDRV_SECTOR_SIZE;
+ blk_insert_bs(blk, bs, &error_abort);
+ c = QLIST_FIRST(&bs->parents);
+
+ blk_set_aio_context(blk, ctx);
+ aio_context_acquire(ctx);
+ t->fn(c);
+ if (t->blkfn) {
+ t->blkfn(blk);
+ }
+ aio_context_release(ctx);
+ blk_set_aio_context(blk, qemu_get_aio_context());
+
+ bdrv_unref(bs);
+ blk_unref(blk);
+}
+
+int main(int argc, char **argv)
+{
+ int i;
+
+ bdrv_init();
+ qemu_init_main_loop(&error_abort);
+
+ g_test_init(&argc, &argv, NULL);
+
+ for (i = 0; i < ARRAY_SIZE(sync_op_tests); i++) {
+ const SyncOpTest *t = &sync_op_tests[i];
+ g_test_add_data_func(t->name, t, test_sync_op);
+ }
+
+ return g_test_run();
+}
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