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block: Add blk_[co_]preadv_part()

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Implement blk_preadv_part() using generated_co_wrapper.

Signed-off-by: Alberto Faria <afaria@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20220705161527.1054072-9-afaria@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
This commit is contained in:
Alberto Faria 2022-07-05 17:15:16 +01:00 • committed by Hanna Reitz
parent 7c8cd723c7
commit d1d3fc3d1d
4 changed files with 49 additions and 12 deletions
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19
tests/unit/test-block-iothread.c
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@ -168,6 +168,21 @@ static void test_sync_op_blk_pwritev(BlockBackend *blk)
g_assert_cmpint(ret, ==, -EIO);
}
static void test_sync_op_blk_preadv_part(BlockBackend *blk)
{
uint8_t buf[512];
QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, sizeof(buf));
int ret;
/* Success */
ret = blk_preadv_part(blk, 0, sizeof(buf), &qiov, 0, 0);
g_assert_cmpint(ret, ==, 0);
/* Early error: Negative offset */
ret = blk_preadv_part(blk, -2, sizeof(buf), &qiov, 0, 0);
g_assert_cmpint(ret, ==, -EIO);
}
static void test_sync_op_load_vmstate(BdrvChild *c)
{
uint8_t buf[512];
@ -339,6 +354,10 @@ const SyncOpTest sync_op_tests[] = {
.name = "/sync-op/pwritev",
.fn = NULL,
.blkfn = test_sync_op_blk_pwritev,
}, {
.name = "/sync-op/preadv_part",
.fn = NULL,
.blkfn = test_sync_op_blk_preadv_part,
}, {
.name = "/sync-op/load_vmstate",
.fn = test_sync_op_load_vmstate,