qtest/ahci: add qcow2 support to ahci-test

This will enable the testing of high offsets without
wasting a lot of disk space, and does not impact the
previous tests.

mkimg and mkqcow2 are added to libqos for other tests.

Signed-off-by: John Snow <jsnow@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1426274523-22661-2-git-send-email-jsnow@redhat.com

1 files changed, 44 insertions, 0 deletions

diff --git a/tests/libqos/libqos.c b/tests/libqos/libqos.c
index bc8beb281f..097091c61e 100644
--- a/tests/libqos/libqos.c
+++ b/tests/libqos/libqos.c
@@ -61,3 +61,47 @@ void qtest_shutdown(QOSState *qs)
     qtest_quit(qs->qts);
     g_free(qs);
 }
+
+void mkimg(const char *file, const char *fmt, unsigned size_mb)
+{
+    gchar *cli;
+    bool ret;
+    int rc;
+    GError *err = NULL;
+    char *qemu_img_path;
+    gchar *out, *out2;
+    char *abs_path;
+
+    qemu_img_path = getenv("QTEST_QEMU_IMG");
+    abs_path = realpath(qemu_img_path, NULL);
+    assert(qemu_img_path);
+
+    cli = g_strdup_printf("%s create -f %s %s %uM", abs_path,
+                          fmt, file, size_mb);
+    ret = g_spawn_command_line_sync(cli, &out, &out2, &rc, &err);
+    if (err) {
+        fprintf(stderr, "%s\n", err->message);
+        g_error_free(err);
+    }
+    g_assert(ret && !err);
+
+    /* In glib 2.34, we have g_spawn_check_exit_status. in 2.12, we don't.
+     * glib 2.43.91 implementation assumes that any non-zero is an error for
+     * windows, but uses extra precautions for Linux. However,
+     * 0 is only possible if the program exited normally, so that should be
+     * sufficient for our purposes on all platforms, here. */
+    if (rc) {
+        fprintf(stderr, "qemu-img returned status code %d\n", rc);
+    }
+    g_assert(!rc);
+
+    g_free(out);
+    g_free(out2);
+    g_free(cli);
+    free(abs_path);
+}
+
+void mkqcow2(const char *file, unsigned size_mb)
+{
+    return mkimg(file, "qcow2", size_mb);
+}