#include "libqos/virtio-pci.h"
#include "standard-headers/linux/virtio_ids.h"
#include "standard-headers/linux/virtio_pci.h"
+#include "hw/9pfs/9p.h"
static const char mount_tag[] = "qtest";
QOSState *qs;
QVirtQueue *vq;
char *test_share;
+ uint16_t p9_req_tag;
} QVirtIO9P;
static QVirtIO9P *qvirtio_9p_start(const char *driver)
{
qvirtqueue_cleanup(v9p->dev->bus, v9p->vq, v9p->qs->alloc);
qvirtio_pci_device_disable(container_of(v9p->dev, QVirtioPCIDevice, vdev));
- g_free(v9p->dev);
+ qvirtio_pci_device_free((QVirtioPCIDevice *)v9p->dev);
qvirtio_9p_stop(v9p);
}
g_free(tag);
}
+#define P9_MAX_SIZE 4096 /* Max size of a T-message or R-message */
+
+typedef struct {
+ 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;
+} P9Req;
+
+static void v9fs_memwrite(P9Req *req, const void *addr, size_t len)
+{
+ memwrite(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_memrewind(P9Req *req, size_t len)
+{
+ req->r_off -= len;
+}
+
+static void v9fs_memread(P9Req *req, void *addr, size_t len)
+{
+ memread(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_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);
+
+ 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 t_size = 7 + size; /* 9P header has well-known size of 7 bytes */
+ P9Hdr hdr = {
+ .size = cpu_to_le32(t_size),
+ .id = id,
+ .tag = cpu_to_le16(tag)
+ };
+
+ g_assert_cmpint(t_size, <=, P9_MAX_SIZE);
+
+ req->v9p = v9p;
+ req->t_size = t_size;
+ req->t_msg = guest_alloc(v9p->qs->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;
+ uint32_t free_head;
+
+ req->r_msg = guest_alloc(v9p->qs->alloc, P9_MAX_SIZE);
+ free_head = qvirtqueue_add(v9p->vq, req->t_msg, req->t_size, false, true);
+ qvirtqueue_add(v9p->vq, req->r_msg, P9_MAX_SIZE, true, false);
+ qvirtqueue_kick(v9p->dev, v9p->vq, 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" :
+ "<unknown>";
+}
+
+static void v9fs_req_recv(P9Req *req, uint8_t id)
+{
+ QVirtIO9P *v9p = req->v9p;
+ P9Hdr hdr;
+ int i;
+
+ for (i = 0; i < 10; i++) {
+ qvirtio_wait_queue_isr(v9p->dev, v9p->vq, 1000 * 1000);
+
+ v9fs_memread(req, &hdr, 7);
+ hdr.size = ldl_le_p(&hdr.size);
+ hdr.tag = lduw_le_p(&hdr.tag);
+ if (hdr.size >= 7) {
+ break;
+ }
+ v9fs_memrewind(req, 7);
+ }
+
+ 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)
+{
+ QVirtIO9P *v9p = req->v9p;
+
+ guest_free(v9p->qs->alloc, req->t_msg);
+ guest_free(v9p->qs->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)
+{
+ P9Req *req = v9fs_req_init(v9p, 4 + v9fs_string_size(version), P9_TVERSION,
+ P9_NOTAG);
+
+ 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)
+{
+ 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,
+ ++(v9p->p9_req_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[])
+{
+ P9Req *req;
+ int i;
+ uint32_t size = 4 + 4 + 2;
+
+ for (i = 0; i < nwname; i++) {
+ size += v9fs_string_size(wnames[i]);
+ }
+ req = v9fs_req_init(v9p, size, P9_TWALK, ++(v9p->p9_req_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);
+}
+
+static void fs_version(QVirtIO9P *v9p)
+{
+ const char *version = "9P2000.L";
+ uint16_t server_len;
+ char *server_version;
+ P9Req *req;
+
+ req = v9fs_tversion(v9p, P9_MAX_SIZE, version);
+ 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(QVirtIO9P *v9p)
+{
+ P9Req *req;
+
+ fs_version(v9p);
+ req = v9fs_tattach(v9p, 0, getuid());
+ v9fs_rattach(req, NULL);
+}
+
+static void fs_walk(QVirtIO9P *v9p)
+{
+ char *wnames[P9_MAXWELEM], *paths[P9_MAXWELEM];
+ char *last_path = v9p->test_share;
+ uint16_t nwqid;
+ v9fs_qid *wqid;
+ int i;
+ P9Req *req;
+
+ for (i = 0; i < P9_MAXWELEM; i++) {
+ wnames[i] = g_strdup_printf("%s%d", __func__, i);
+ last_path = paths[i] = g_strdup_printf("%s/%s", last_path, wnames[i]);
+ g_assert(!mkdir(paths[i], 0700));
+ }
+
+ fs_attach(v9p);
+ req = v9fs_twalk(v9p, 0, 1, P9_MAXWELEM, wnames);
+ v9fs_rwalk(req, &nwqid, &wqid);
+
+ g_assert_cmpint(nwqid, ==, P9_MAXWELEM);
+
+ for (i = 0; i < P9_MAXWELEM; i++) {
+ rmdir(paths[P9_MAXWELEM - i - 1]);
+ g_free(paths[P9_MAXWELEM - i - 1]);
+ g_free(wnames[i]);
+ }
+
+ g_free(wqid);
+}
+
+static void fs_walk_no_slash(QVirtIO9P *v9p)
+{
+ char *const wnames[] = { g_strdup(" /") };
+ P9Req *req;
+ uint32_t err;
+
+ fs_attach(v9p);
+ req = v9fs_twalk(v9p, 0, 1, 1, wnames);
+ v9fs_rlerror(req, &err);
+
+ g_assert_cmpint(err, ==, ENOENT);
+
+ g_free(wnames[0]);
+}
+
+static void fs_walk_dotdot(QVirtIO9P *v9p)
+{
+ char *const wnames[] = { g_strdup("..") };
+ v9fs_qid root_qid, *wqid;
+ P9Req *req;
+
+ fs_version(v9p);
+ req = v9fs_tattach(v9p, 0, getuid());
+ v9fs_rattach(req, &root_qid);
+
+ req = v9fs_twalk(v9p, 0, 1, 1, wnames);
+ 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]);
+}
+
typedef void (*v9fs_test_fn)(QVirtIO9P *v9p);
static void v9fs_run_pci_test(gconstpointer data)
g_test_init(&argc, &argv, NULL);
v9fs_qtest_pci_add("/virtio/9p/pci/nop", NULL);
v9fs_qtest_pci_add("/virtio/9p/pci/config", pci_config);
+ v9fs_qtest_pci_add("/virtio/9p/pci/fs/version/basic", fs_version);
+ v9fs_qtest_pci_add("/virtio/9p/pci/fs/attach/basic", fs_attach);
+ v9fs_qtest_pci_add("/virtio/9p/pci/fs/walk/basic", fs_walk);
+ v9fs_qtest_pci_add("/virtio/9p/pci/fs/walk/no_slash", fs_walk_no_slash);
+ v9fs_qtest_pci_add("/virtio/9p/pci/fs/walk/dotdot_from_root",
+ fs_walk_dotdot);
return g_test_run();
}
projects / mirror_qemu.git / blobdiff