+++ /dev/null
-/*
- * 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.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 {
- 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)
-{
- 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_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_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->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(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->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(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);
projects / mirror_qemu.git / blobdiff