test: Move qtests to a separate directory

The tests directory itself is pretty overcrowded, and it's hard to
see which test belongs to which test subsystem (unit, qtest, ...).
Let's move the qtests to a separate folder for more clarity.

Message-Id: <20191218103059.11729-6-thuth@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

1 files changed, 662 insertions, 0 deletions

diff --git a/tests/qtest/virtio-9p-test.c b/tests/qtest/virtio-9p-test.c
new file mode 100644
index 0000000000..e7b58e3a0c
--- /dev/null
+++ b/tests/qtest/virtio-9p-test.c
@@ -0,0 +1,662 @@
+/*
+ * QTest testcase for VirtIO 9P
+ *
+ * Copyright (c) 2014 SUSE LINUX Products GmbH
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include "qemu/osdep.h"
+#include "libqtest-single.h"
+#include "qemu/module.h"
+#include "hw/9pfs/9p.h"
+#include "hw/9pfs/9p-synth.h"
+#include "libqos/virtio-9p.h"
+#include "libqos/qgraph.h"
+
+#define QVIRTIO_9P_TIMEOUT_US (10 * 1000 * 1000)
+static QGuestAllocator *alloc;
+
+static void pci_config(void *obj, void *data, QGuestAllocator *t_alloc)
+{
+    QVirtio9P *v9p = obj;
+    alloc = t_alloc;
+    size_t tag_len = qvirtio_config_readw(v9p->vdev, 0);
+    char *tag;
+    int i;
+
+    g_assert_cmpint(tag_len, ==, strlen(MOUNT_TAG));
+
+    tag = g_malloc(tag_len);
+    for (i = 0; i < tag_len; i++) {
+        tag[i] = qvirtio_config_readb(v9p->vdev, i + 2);
+    }
+    g_assert_cmpmem(tag, tag_len, MOUNT_TAG, tag_len);
+    g_free(tag);
+}
+
+#define P9_MAX_SIZE 4096 /* Max size of a T-message or R-message */
+
+typedef struct {
+    QTestState *qts;
+    QVirtio9P *v9p;
+    uint16_t tag;
+    uint64_t t_msg;
+    uint32_t t_size;
+    uint64_t r_msg;
+    /* No r_size, it is hardcoded to P9_MAX_SIZE */
+    size_t t_off;
+    size_t r_off;
+    uint32_t free_head;
+} P9Req;
+
+static void v9fs_memwrite(P9Req *req, const void *addr, size_t len)
+{
+    qtest_memwrite(req->qts, req->t_msg + req->t_off, addr, len);
+    req->t_off += len;
+}
+
+static void v9fs_memskip(P9Req *req, size_t len)
+{
+    req->r_off += len;
+}
+
+static void v9fs_memread(P9Req *req, void *addr, size_t len)
+{
+    qtest_memread(req->qts, req->r_msg + req->r_off, addr, len);
+    req->r_off += len;
+}
+
+static void v9fs_uint16_write(P9Req *req, uint16_t val)
+{
+    uint16_t le_val = cpu_to_le16(val);
+
+    v9fs_memwrite(req, &le_val, 2);
+}
+
+static void v9fs_uint16_read(P9Req *req, uint16_t *val)
+{
+    v9fs_memread(req, val, 2);
+    le16_to_cpus(val);
+}
+
+static void v9fs_uint32_write(P9Req *req, uint32_t val)
+{
+    uint32_t le_val = cpu_to_le32(val);
+
+    v9fs_memwrite(req, &le_val, 4);
+}
+
+static void v9fs_uint64_write(P9Req *req, uint64_t val)
+{
+    uint64_t le_val = cpu_to_le64(val);
+
+    v9fs_memwrite(req, &le_val, 8);
+}
+
+static void v9fs_uint32_read(P9Req *req, uint32_t *val)
+{
+    v9fs_memread(req, val, 4);
+    le32_to_cpus(val);
+}
+
+/* len[2] string[len] */
+static uint16_t v9fs_string_size(const char *string)
+{
+    size_t len = strlen(string);
+
+    g_assert_cmpint(len, <=, UINT16_MAX - 2);
+
+    return 2 + len;
+}
+
+static void v9fs_string_write(P9Req *req, const char *string)
+{
+    int len = strlen(string);
+
+    g_assert_cmpint(len, <=, UINT16_MAX);
+
+    v9fs_uint16_write(req, (uint16_t) len);
+    v9fs_memwrite(req, string, len);
+}
+
+static void v9fs_string_read(P9Req *req, uint16_t *len, char **string)
+{
+    uint16_t local_len;
+
+    v9fs_uint16_read(req, &local_len);
+    if (len) {
+        *len = local_len;
+    }
+    if (string) {
+        *string = g_malloc(local_len);
+        v9fs_memread(req, *string, local_len);
+    } else {
+        v9fs_memskip(req, local_len);
+    }
+}
+
+ typedef struct {
+    uint32_t size;
+    uint8_t id;
+    uint16_t tag;
+} QEMU_PACKED P9Hdr;
+
+static P9Req *v9fs_req_init(QVirtio9P *v9p, uint32_t size, uint8_t id,
+                            uint16_t tag)
+{
+    P9Req *req = g_new0(P9Req, 1);
+    uint32_t total_size = 7; /* 9P header has well-known size of 7 bytes */
+    P9Hdr hdr = {
+        .id = id,
+        .tag = cpu_to_le16(tag)
+    };
+
+    g_assert_cmpint(total_size, <=, UINT32_MAX - size);
+    total_size += size;
+    hdr.size = cpu_to_le32(total_size);
+
+    g_assert_cmpint(total_size, <=, P9_MAX_SIZE);
+
+    req->qts = global_qtest;
+    req->v9p = v9p;
+    req->t_size = total_size;
+    req->t_msg = guest_alloc(alloc, req->t_size);
+    v9fs_memwrite(req, &hdr, 7);
+    req->tag = tag;
+    return req;
+}
+
+static void v9fs_req_send(P9Req *req)
+{
+    QVirtio9P *v9p = req->v9p;
+
+    req->r_msg = guest_alloc(alloc, P9_MAX_SIZE);
+    req->free_head = qvirtqueue_add(req->qts, v9p->vq, req->t_msg, req->t_size,
+                                    false, true);
+    qvirtqueue_add(req->qts, v9p->vq, req->r_msg, P9_MAX_SIZE, true, false);
+    qvirtqueue_kick(req->qts, v9p->vdev, v9p->vq, req->free_head);
+    req->t_off = 0;
+}
+
+static const char *rmessage_name(uint8_t id)
+{
+    return
+        id == P9_RLERROR ? "RLERROR" :
+        id == P9_RVERSION ? "RVERSION" :
+        id == P9_RATTACH ? "RATTACH" :
+        id == P9_RWALK ? "RWALK" :
+        id == P9_RLOPEN ? "RLOPEN" :
+        id == P9_RWRITE ? "RWRITE" :
+        id == P9_RFLUSH ? "RFLUSH" :
+        "<unknown>";
+}
+
+static void v9fs_req_wait_for_reply(P9Req *req, uint32_t *len)
+{
+    QVirtio9P *v9p = req->v9p;
+
+    qvirtio_wait_used_elem(req->qts, v9p->vdev, v9p->vq, req->free_head, len,
+                           QVIRTIO_9P_TIMEOUT_US);
+}
+
+static void v9fs_req_recv(P9Req *req, uint8_t id)
+{
+    P9Hdr hdr;
+
+    v9fs_memread(req, &hdr, 7);
+    hdr.size = ldl_le_p(&hdr.size);
+    hdr.tag = lduw_le_p(&hdr.tag);
+
+    g_assert_cmpint(hdr.size, >=, 7);
+    g_assert_cmpint(hdr.size, <=, P9_MAX_SIZE);
+    g_assert_cmpint(hdr.tag, ==, req->tag);
+
+    if (hdr.id != id) {
+        g_printerr("Received response %d (%s) instead of %d (%s)\n",
+                   hdr.id, rmessage_name(hdr.id), id, rmessage_name(id));
+
+        if (hdr.id == P9_RLERROR) {
+            uint32_t err;
+            v9fs_uint32_read(req, &err);
+            g_printerr("Rlerror has errno %d (%s)\n", err, strerror(err));
+        }
+    }
+    g_assert_cmpint(hdr.id, ==, id);
+}
+
+static void v9fs_req_free(P9Req *req)
+{
+    guest_free(alloc, req->t_msg);
+    guest_free(alloc, req->r_msg);
+    g_free(req);
+}
+
+/* size[4] Rlerror tag[2] ecode[4] */
+static void v9fs_rlerror(P9Req *req, uint32_t *err)
+{
+    v9fs_req_recv(req, P9_RLERROR);
+    v9fs_uint32_read(req, err);
+    v9fs_req_free(req);
+}
+
+/* size[4] Tversion tag[2] msize[4] version[s] */
+static P9Req *v9fs_tversion(QVirtio9P *v9p, uint32_t msize, const char *version,
+                            uint16_t tag)
+{
+    P9Req *req;
+    uint32_t body_size = 4;
+    uint16_t string_size = v9fs_string_size(version);
+
+    g_assert_cmpint(body_size, <=, UINT32_MAX - string_size);
+    body_size += string_size;
+    req = v9fs_req_init(v9p, body_size, P9_TVERSION, tag);
+
+    v9fs_uint32_write(req, msize);
+    v9fs_string_write(req, version);
+    v9fs_req_send(req);
+    return req;
+}
+
+/* size[4] Rversion tag[2] msize[4] version[s] */
+static void v9fs_rversion(P9Req *req, uint16_t *len, char **version)
+{
+    uint32_t msize;
+
+    v9fs_req_recv(req, P9_RVERSION);
+    v9fs_uint32_read(req, &msize);
+
+    g_assert_cmpint(msize, ==, P9_MAX_SIZE);
+
+    if (len || version) {
+        v9fs_string_read(req, len, version);
+    }
+
+    v9fs_req_free(req);
+}
+
+/* size[4] Tattach tag[2] fid[4] afid[4] uname[s] aname[s] n_uname[4] */
+static P9Req *v9fs_tattach(QVirtio9P *v9p, uint32_t fid, uint32_t n_uname,
+                           uint16_t tag)
+{
+    const char *uname = ""; /* ignored by QEMU */
+    const char *aname = ""; /* ignored by QEMU */
+    P9Req *req = v9fs_req_init(v9p, 4 + 4 + 2 + 2 + 4, P9_TATTACH, tag);
+
+    v9fs_uint32_write(req, fid);
+    v9fs_uint32_write(req, P9_NOFID);
+    v9fs_string_write(req, uname);
+    v9fs_string_write(req, aname);
+    v9fs_uint32_write(req, n_uname);
+    v9fs_req_send(req);
+    return req;
+}
+
+typedef char v9fs_qid[13];
+
+/* size[4] Rattach tag[2] qid[13] */
+static void v9fs_rattach(P9Req *req, v9fs_qid *qid)
+{
+    v9fs_req_recv(req, P9_RATTACH);
+    if (qid) {
+        v9fs_memread(req, qid, 13);
+    }
+    v9fs_req_free(req);
+}
+
+/* size[4] Twalk tag[2] fid[4] newfid[4] nwname[2] nwname*(wname[s]) */
+static P9Req *v9fs_twalk(QVirtio9P *v9p, uint32_t fid, uint32_t newfid,
+                         uint16_t nwname, char *const wnames[], uint16_t tag)
+{
+    P9Req *req;
+    int i;
+    uint32_t body_size = 4 + 4 + 2;
+
+    for (i = 0; i < nwname; i++) {
+        uint16_t wname_size = v9fs_string_size(wnames[i]);
+
+        g_assert_cmpint(body_size, <=, UINT32_MAX - wname_size);
+        body_size += wname_size;
+    }
+    req = v9fs_req_init(v9p,  body_size, P9_TWALK, tag);
+    v9fs_uint32_write(req, fid);
+    v9fs_uint32_write(req, newfid);
+    v9fs_uint16_write(req, nwname);
+    for (i = 0; i < nwname; i++) {
+        v9fs_string_write(req, wnames[i]);
+    }
+    v9fs_req_send(req);
+    return req;
+}
+
+/* size[4] Rwalk tag[2] nwqid[2] nwqid*(wqid[13]) */
+static void v9fs_rwalk(P9Req *req, uint16_t *nwqid, v9fs_qid **wqid)
+{
+    uint16_t local_nwqid;
+
+    v9fs_req_recv(req, P9_RWALK);
+    v9fs_uint16_read(req, &local_nwqid);
+    if (nwqid) {
+        *nwqid = local_nwqid;
+    }
+    if (wqid) {
+        *wqid = g_malloc(local_nwqid * 13);
+        v9fs_memread(req, *wqid, local_nwqid * 13);
+    }
+    v9fs_req_free(req);
+}
+
+/* size[4] Tlopen tag[2] fid[4] flags[4] */
+static P9Req *v9fs_tlopen(QVirtio9P *v9p, uint32_t fid, uint32_t flags,
+                          uint16_t tag)
+{
+    P9Req *req;
+
+    req = v9fs_req_init(v9p,  4 + 4, P9_TLOPEN, tag);
+    v9fs_uint32_write(req, fid);
+    v9fs_uint32_write(req, flags);
+    v9fs_req_send(req);
+    return req;
+}
+
+/* size[4] Rlopen tag[2] qid[13] iounit[4] */
+static void v9fs_rlopen(P9Req *req, v9fs_qid *qid, uint32_t *iounit)
+{
+    v9fs_req_recv(req, P9_RLOPEN);
+    if (qid) {
+        v9fs_memread(req, qid, 13);
+    } else {
+        v9fs_memskip(req, 13);
+    }
+    if (iounit) {
+        v9fs_uint32_read(req, iounit);
+    }
+    v9fs_req_free(req);
+}
+
+/* size[4] Twrite tag[2] fid[4] offset[8] count[4] data[count] */
+static P9Req *v9fs_twrite(QVirtio9P *v9p, uint32_t fid, uint64_t offset,
+                          uint32_t count, const void *data, uint16_t tag)
+{
+    P9Req *req;
+    uint32_t body_size = 4 + 8 + 4;
+
+    g_assert_cmpint(body_size, <=, UINT32_MAX - count);
+    body_size += count;
+    req = v9fs_req_init(v9p,  body_size, P9_TWRITE, tag);
+    v9fs_uint32_write(req, fid);
+    v9fs_uint64_write(req, offset);
+    v9fs_uint32_write(req, count);
+    v9fs_memwrite(req, data, count);
+    v9fs_req_send(req);
+    return req;
+}
+
+/* size[4] Rwrite tag[2] count[4] */
+static void v9fs_rwrite(P9Req *req, uint32_t *count)
+{
+    v9fs_req_recv(req, P9_RWRITE);
+    if (count) {
+        v9fs_uint32_read(req, count);
+    }
+    v9fs_req_free(req);
+}
+
+/* size[4] Tflush tag[2] oldtag[2] */
+static P9Req *v9fs_tflush(QVirtio9P *v9p, uint16_t oldtag, uint16_t tag)
+{
+    P9Req *req;
+
+    req = v9fs_req_init(v9p,  2, P9_TFLUSH, tag);
+    v9fs_uint32_write(req, oldtag);
+    v9fs_req_send(req);
+    return req;
+}
+
+/* size[4] Rflush tag[2] */
+static void v9fs_rflush(P9Req *req)
+{
+    v9fs_req_recv(req, P9_RFLUSH);
+    v9fs_req_free(req);
+}
+
+static void fs_version(void *obj, void *data, QGuestAllocator *t_alloc)
+{
+    QVirtio9P *v9p = obj;
+    alloc = t_alloc;
+    const char *version = "9P2000.L";
+    uint16_t server_len;
+    char *server_version;
+    P9Req *req;
+
+    req = v9fs_tversion(v9p, P9_MAX_SIZE, version, P9_NOTAG);
+    v9fs_req_wait_for_reply(req, NULL);
+    v9fs_rversion(req, &server_len, &server_version);
+
+    g_assert_cmpmem(server_version, server_len, version, strlen(version));
+
+    g_free(server_version);
+}
+
+static void fs_attach(void *obj, void *data, QGuestAllocator *t_alloc)
+{
+    QVirtio9P *v9p = obj;
+    alloc = t_alloc;
+    P9Req *req;
+
+    fs_version(v9p, NULL, t_alloc);
+    req = v9fs_tattach(v9p, 0, getuid(), 0);
+    v9fs_req_wait_for_reply(req, NULL);
+    v9fs_rattach(req, NULL);
+}
+
+static void fs_walk(void *obj, void *data, QGuestAllocator *t_alloc)
+{
+    QVirtio9P *v9p = obj;
+    alloc = t_alloc;
+    char *wnames[P9_MAXWELEM];
+    uint16_t nwqid;
+    v9fs_qid *wqid;
+    int i;
+    P9Req *req;
+
+    for (i = 0; i < P9_MAXWELEM; i++) {
+        wnames[i] = g_strdup_printf(QTEST_V9FS_SYNTH_WALK_FILE, i);
+    }
+
+    fs_attach(v9p, NULL, t_alloc);
+    req = v9fs_twalk(v9p, 0, 1, P9_MAXWELEM, wnames, 0);
+    v9fs_req_wait_for_reply(req, NULL);
+    v9fs_rwalk(req, &nwqid, &wqid);
+
+    g_assert_cmpint(nwqid, ==, P9_MAXWELEM);
+
+    for (i = 0; i < P9_MAXWELEM; i++) {
+        g_free(wnames[i]);
+    }
+
+    g_free(wqid);
+}
+
+static void fs_walk_no_slash(void *obj, void *data, QGuestAllocator *t_alloc)
+{
+    QVirtio9P *v9p = obj;
+    alloc = t_alloc;
+    char *const wnames[] = { g_strdup(" /") };
+    P9Req *req;
+    uint32_t err;
+
+    fs_attach(v9p, NULL, t_alloc);
+    req = v9fs_twalk(v9p, 0, 1, 1, wnames, 0);
+    v9fs_req_wait_for_reply(req, NULL);
+    v9fs_rlerror(req, &err);
+
+    g_assert_cmpint(err, ==, ENOENT);
+
+    g_free(wnames[0]);
+}
+
+static void fs_walk_dotdot(void *obj, void *data, QGuestAllocator *t_alloc)
+{
+    QVirtio9P *v9p = obj;
+    alloc = t_alloc;
+    char *const wnames[] = { g_strdup("..") };
+    v9fs_qid root_qid, *wqid;
+    P9Req *req;
+
+    fs_version(v9p, NULL, t_alloc);
+    req = v9fs_tattach(v9p, 0, getuid(), 0);
+    v9fs_req_wait_for_reply(req, NULL);
+    v9fs_rattach(req, &root_qid);
+
+    req = v9fs_twalk(v9p, 0, 1, 1, wnames, 0);
+    v9fs_req_wait_for_reply(req, NULL);
+    v9fs_rwalk(req, NULL, &wqid); /* We now we'll get one qid */
+
+    g_assert_cmpmem(&root_qid, 13, wqid[0], 13);
+
+    g_free(wqid);
+    g_free(wnames[0]);
+}
+
+static void fs_lopen(void *obj, void *data, QGuestAllocator *t_alloc)
+{
+    QVirtio9P *v9p = obj;
+    alloc = t_alloc;
+    char *const wnames[] = { g_strdup(QTEST_V9FS_SYNTH_LOPEN_FILE) };
+    P9Req *req;
+
+    fs_attach(v9p, NULL, t_alloc);
+    req = v9fs_twalk(v9p, 0, 1, 1, wnames, 0);
+    v9fs_req_wait_for_reply(req, NULL);
+    v9fs_rwalk(req, NULL, NULL);
+
+    req = v9fs_tlopen(v9p, 1, O_WRONLY, 0);
+    v9fs_req_wait_for_reply(req, NULL);
+    v9fs_rlopen(req, NULL, NULL);
+
+    g_free(wnames[0]);
+}
+
+static void fs_write(void *obj, void *data, QGuestAllocator *t_alloc)
+{
+    QVirtio9P *v9p = obj;
+    alloc = t_alloc;
+    static const uint32_t write_count = P9_MAX_SIZE / 2;
+    char *const wnames[] = { g_strdup(QTEST_V9FS_SYNTH_WRITE_FILE) };
+    char *buf = g_malloc0(write_count);
+    uint32_t count;
+    P9Req *req;
+
+    fs_attach(v9p, NULL, t_alloc);
+    req = v9fs_twalk(v9p, 0, 1, 1, wnames, 0);
+    v9fs_req_wait_for_reply(req, NULL);
+    v9fs_rwalk(req, NULL, NULL);
+
+    req = v9fs_tlopen(v9p, 1, O_WRONLY, 0);
+    v9fs_req_wait_for_reply(req, NULL);
+    v9fs_rlopen(req, NULL, NULL);
+
+    req = v9fs_twrite(v9p, 1, 0, write_count, buf, 0);
+    v9fs_req_wait_for_reply(req, NULL);
+    v9fs_rwrite(req, &count);
+    g_assert_cmpint(count, ==, write_count);
+
+    g_free(buf);
+    g_free(wnames[0]);
+}
+
+static void fs_flush_success(void *obj, void *data, QGuestAllocator *t_alloc)
+{
+    QVirtio9P *v9p = obj;
+    alloc = t_alloc;
+    char *const wnames[] = { g_strdup(QTEST_V9FS_SYNTH_FLUSH_FILE) };
+    P9Req *req, *flush_req;
+    uint32_t reply_len;
+    uint8_t should_block;
+
+    fs_attach(v9p, NULL, t_alloc);
+    req = v9fs_twalk(v9p, 0, 1, 1, wnames, 0);
+    v9fs_req_wait_for_reply(req, NULL);
+    v9fs_rwalk(req, NULL, NULL);
+
+    req = v9fs_tlopen(v9p, 1, O_WRONLY, 0);
+    v9fs_req_wait_for_reply(req, NULL);
+    v9fs_rlopen(req, NULL, NULL);
+
+    /* This will cause the 9p server to try to write data to the backend,
+     * until the write request gets cancelled.
+     */
+    should_block = 1;
+    req = v9fs_twrite(v9p, 1, 0, sizeof(should_block), &should_block, 0);
+
+    flush_req = v9fs_tflush(v9p, req->tag, 1);
+
+    /* The write request is supposed to be flushed: the server should just
+     * mark the write request as used and reply to the flush request.
+     */
+    v9fs_req_wait_for_reply(req, &reply_len);
+    g_assert_cmpint(reply_len, ==, 0);
+    v9fs_req_free(req);
+    v9fs_rflush(flush_req);
+
+    g_free(wnames[0]);
+}
+
+static void fs_flush_ignored(void *obj, void *data, QGuestAllocator *t_alloc)
+{
+    QVirtio9P *v9p = obj;
+    alloc = t_alloc;
+    char *const wnames[] = { g_strdup(QTEST_V9FS_SYNTH_FLUSH_FILE) };
+    P9Req *req, *flush_req;
+    uint32_t count;
+    uint8_t should_block;
+
+    fs_attach(v9p, NULL, t_alloc);
+    req = v9fs_twalk(v9p, 0, 1, 1, wnames, 0);
+    v9fs_req_wait_for_reply(req, NULL);
+    v9fs_rwalk(req, NULL, NULL);
+
+    req = v9fs_tlopen(v9p, 1, O_WRONLY, 0);
+    v9fs_req_wait_for_reply(req, NULL);
+    v9fs_rlopen(req, NULL, NULL);
+
+    /* This will cause the write request to complete right away, before it
+     * could be actually cancelled.
+     */
+    should_block = 0;
+    req = v9fs_twrite(v9p, 1, 0, sizeof(should_block), &should_block, 0);
+
+    flush_req = v9fs_tflush(v9p, req->tag, 1);
+
+    /* The write request is supposed to complete. The server should
+     * reply to the write request and the flush request.
+     */
+    v9fs_req_wait_for_reply(req, NULL);
+    v9fs_rwrite(req, &count);
+    g_assert_cmpint(count, ==, sizeof(should_block));
+    v9fs_rflush(flush_req);
+
+    g_free(wnames[0]);
+}
+
+static void register_virtio_9p_test(void)
+{
+    qos_add_test("config", "virtio-9p", pci_config, NULL);
+    qos_add_test("fs/version/basic", "virtio-9p", fs_version, NULL);
+    qos_add_test("fs/attach/basic", "virtio-9p", fs_attach, NULL);
+    qos_add_test("fs/walk/basic", "virtio-9p", fs_walk, NULL);
+    qos_add_test("fs/walk/no_slash", "virtio-9p", fs_walk_no_slash,
+                 NULL);
+    qos_add_test("fs/walk/dotdot_from_root", "virtio-9p",
+                 fs_walk_dotdot, NULL);
+    qos_add_test("fs/lopen/basic", "virtio-9p", fs_lopen, NULL);
+    qos_add_test("fs/write/basic", "virtio-9p", fs_write, NULL);
+    qos_add_test("fs/flush/success", "virtio-9p", fs_flush_success,
+                 NULL);
+    qos_add_test("fs/flush/ignored", "virtio-9p", fs_flush_ignored,
+                 NULL);
+}
+
+libqos_init(register_virtio_9p_test);