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15#include "qemu/osdep.h"
16#include "libqtest-single.h"
17#include "qemu/module.h"
18#include "hw/9pfs/9p.h"
19#include "hw/9pfs/9p-synth.h"
20#include "libqos/virtio-9p.h"
21#include "libqos/qgraph.h"
22
23#define QVIRTIO_9P_TIMEOUT_US (10 * 1000 * 1000)
24static QGuestAllocator *alloc;
25
26
27
28
29
30static uint32_t fid_generator = 1000;
31
32static uint32_t genfid(void)
33{
34 return fid_generator++;
35}
36
37
38
39
40
41
42
43
44
45
46static int split(const char *in, const char *delim, char ***out)
47{
48 int n = 0, i = 0;
49 char *tmp, *p;
50
51 tmp = g_strdup(in);
52 for (p = strtok(tmp, delim); p != NULL; p = strtok(NULL, delim)) {
53 if (strlen(p) > 0) {
54 ++n;
55 }
56 }
57 g_free(tmp);
58
59 *out = g_new0(char *, n + 1);
60
61 tmp = g_strdup(in);
62 for (p = strtok(tmp, delim); p != NULL; p = strtok(NULL, delim)) {
63 if (strlen(p) > 0) {
64 (*out)[i++] = g_strdup(p);
65 }
66 }
67 g_free(tmp);
68
69 return n;
70}
71
72static void split_free(char ***out)
73{
74 int i;
75 for (i = 0; (*out)[i]; ++i) {
76 g_free((*out)[i]);
77 }
78 g_free(*out);
79 *out = NULL;
80}
81
82static void pci_config(void *obj, void *data, QGuestAllocator *t_alloc)
83{
84 QVirtio9P *v9p = obj;
85 alloc = t_alloc;
86 size_t tag_len = qvirtio_config_readw(v9p->vdev, 0);
87 g_autofree char *tag = NULL;
88 int i;
89
90 g_assert_cmpint(tag_len, ==, strlen(MOUNT_TAG));
91
92 tag = g_malloc(tag_len);
93 for (i = 0; i < tag_len; i++) {
94 tag[i] = qvirtio_config_readb(v9p->vdev, i + 2);
95 }
96 g_assert_cmpmem(tag, tag_len, MOUNT_TAG, tag_len);
97}
98
99#define P9_MAX_SIZE 4096
100
101typedef struct {
102 QTestState *qts;
103 QVirtio9P *v9p;
104 uint16_t tag;
105 uint64_t t_msg;
106 uint32_t t_size;
107 uint64_t r_msg;
108
109 size_t t_off;
110 size_t r_off;
111 uint32_t free_head;
112} P9Req;
113
114static void v9fs_memwrite(P9Req *req, const void *addr, size_t len)
115{
116 qtest_memwrite(req->qts, req->t_msg + req->t_off, addr, len);
117 req->t_off += len;
118}
119
120static void v9fs_memskip(P9Req *req, size_t len)
121{
122 req->r_off += len;
123}
124
125static void v9fs_memread(P9Req *req, void *addr, size_t len)
126{
127 qtest_memread(req->qts, req->r_msg + req->r_off, addr, len);
128 req->r_off += len;
129}
130
131static void v9fs_uint8_read(P9Req *req, uint8_t *val)
132{
133 v9fs_memread(req, val, 1);
134}
135
136static void v9fs_uint16_write(P9Req *req, uint16_t val)
137{
138 uint16_t le_val = cpu_to_le16(val);
139
140 v9fs_memwrite(req, &le_val, 2);
141}
142
143static void v9fs_uint16_read(P9Req *req, uint16_t *val)
144{
145 v9fs_memread(req, val, 2);
146 le16_to_cpus(val);
147}
148
149static void v9fs_uint32_write(P9Req *req, uint32_t val)
150{
151 uint32_t le_val = cpu_to_le32(val);
152
153 v9fs_memwrite(req, &le_val, 4);
154}
155
156static void v9fs_uint64_write(P9Req *req, uint64_t val)
157{
158 uint64_t le_val = cpu_to_le64(val);
159
160 v9fs_memwrite(req, &le_val, 8);
161}
162
163static void v9fs_uint32_read(P9Req *req, uint32_t *val)
164{
165 v9fs_memread(req, val, 4);
166 le32_to_cpus(val);
167}
168
169static void v9fs_uint64_read(P9Req *req, uint64_t *val)
170{
171 v9fs_memread(req, val, 8);
172 le64_to_cpus(val);
173}
174
175
176static uint16_t v9fs_string_size(const char *string)
177{
178 size_t len = strlen(string);
179
180 g_assert_cmpint(len, <=, UINT16_MAX - 2);
181
182 return 2 + len;
183}
184
185static void v9fs_string_write(P9Req *req, const char *string)
186{
187 int len = strlen(string);
188
189 g_assert_cmpint(len, <=, UINT16_MAX);
190
191 v9fs_uint16_write(req, (uint16_t) len);
192 v9fs_memwrite(req, string, len);
193}
194
195static void v9fs_string_read(P9Req *req, uint16_t *len, char **string)
196{
197 uint16_t local_len;
198
199 v9fs_uint16_read(req, &local_len);
200 if (len) {
201 *len = local_len;
202 }
203 if (string) {
204 *string = g_malloc(local_len + 1);
205 v9fs_memread(req, *string, local_len);
206 (*string)[local_len] = 0;
207 } else {
208 v9fs_memskip(req, local_len);
209 }
210}
211
212 typedef struct {
213 uint32_t size;
214 uint8_t id;
215 uint16_t tag;
216} QEMU_PACKED P9Hdr;
217
218static P9Req *v9fs_req_init(QVirtio9P *v9p, uint32_t size, uint8_t id,
219 uint16_t tag)
220{
221 P9Req *req = g_new0(P9Req, 1);
222 uint32_t total_size = 7;
223 P9Hdr hdr = {
224 .id = id,
225 .tag = cpu_to_le16(tag)
226 };
227
228 g_assert_cmpint(total_size, <=, UINT32_MAX - size);
229 total_size += size;
230 hdr.size = cpu_to_le32(total_size);
231
232 g_assert_cmpint(total_size, <=, P9_MAX_SIZE);
233
234 req->qts = global_qtest;
235 req->v9p = v9p;
236 req->t_size = total_size;
237 req->t_msg = guest_alloc(alloc, req->t_size);
238 v9fs_memwrite(req, &hdr, 7);
239 req->tag = tag;
240 return req;
241}
242
243static void v9fs_req_send(P9Req *req)
244{
245 QVirtio9P *v9p = req->v9p;
246
247 req->r_msg = guest_alloc(alloc, P9_MAX_SIZE);
248 req->free_head = qvirtqueue_add(req->qts, v9p->vq, req->t_msg, req->t_size,
249 false, true);
250 qvirtqueue_add(req->qts, v9p->vq, req->r_msg, P9_MAX_SIZE, true, false);
251 qvirtqueue_kick(req->qts, v9p->vdev, v9p->vq, req->free_head);
252 req->t_off = 0;
253}
254
255static const char *rmessage_name(uint8_t id)
256{
257 return
258 id == P9_RLERROR ? "RLERROR" :
259 id == P9_RVERSION ? "RVERSION" :
260 id == P9_RATTACH ? "RATTACH" :
261 id == P9_RWALK ? "RWALK" :
262 id == P9_RLOPEN ? "RLOPEN" :
263 id == P9_RWRITE ? "RWRITE" :
264 id == P9_RMKDIR ? "RMKDIR" :
265 id == P9_RLCREATE ? "RLCREATE" :
266 id == P9_RSYMLINK ? "RSYMLINK" :
267 id == P9_RLINK ? "RLINK" :
268 id == P9_RUNLINKAT ? "RUNLINKAT" :
269 id == P9_RFLUSH ? "RFLUSH" :
270 id == P9_RREADDIR ? "READDIR" :
271 "<unknown>";
272}
273
274static void v9fs_req_wait_for_reply(P9Req *req, uint32_t *len)
275{
276 QVirtio9P *v9p = req->v9p;
277
278 qvirtio_wait_used_elem(req->qts, v9p->vdev, v9p->vq, req->free_head, len,
279 QVIRTIO_9P_TIMEOUT_US);
280}
281
282static void v9fs_req_recv(P9Req *req, uint8_t id)
283{
284 P9Hdr hdr;
285
286 v9fs_memread(req, &hdr, 7);
287 hdr.size = ldl_le_p(&hdr.size);
288 hdr.tag = lduw_le_p(&hdr.tag);
289
290 g_assert_cmpint(hdr.size, >=, 7);
291 g_assert_cmpint(hdr.size, <=, P9_MAX_SIZE);
292 g_assert_cmpint(hdr.tag, ==, req->tag);
293
294 if (hdr.id != id) {
295 g_printerr("Received response %d (%s) instead of %d (%s)\n",
296 hdr.id, rmessage_name(hdr.id), id, rmessage_name(id));
297
298 if (hdr.id == P9_RLERROR) {
299 uint32_t err;
300 v9fs_uint32_read(req, &err);
301 g_printerr("Rlerror has errno %d (%s)\n", err, strerror(err));
302 }
303 }
304 g_assert_cmpint(hdr.id, ==, id);
305}
306
307static void v9fs_req_free(P9Req *req)
308{
309 guest_free(alloc, req->t_msg);
310 guest_free(alloc, req->r_msg);
311 g_free(req);
312}
313
314
315static void v9fs_rlerror(P9Req *req, uint32_t *err)
316{
317 v9fs_req_recv(req, P9_RLERROR);
318 v9fs_uint32_read(req, err);
319 v9fs_req_free(req);
320}
321
322
323static P9Req *v9fs_tversion(QVirtio9P *v9p, uint32_t msize, const char *version,
324 uint16_t tag)
325{
326 P9Req *req;
327 uint32_t body_size = 4;
328 uint16_t string_size = v9fs_string_size(version);
329
330 g_assert_cmpint(body_size, <=, UINT32_MAX - string_size);
331 body_size += string_size;
332 req = v9fs_req_init(v9p, body_size, P9_TVERSION, tag);
333
334 v9fs_uint32_write(req, msize);
335 v9fs_string_write(req, version);
336 v9fs_req_send(req);
337 return req;
338}
339
340
341static void v9fs_rversion(P9Req *req, uint16_t *len, char **version)
342{
343 uint32_t msize;
344
345 v9fs_req_recv(req, P9_RVERSION);
346 v9fs_uint32_read(req, &msize);
347
348 g_assert_cmpint(msize, ==, P9_MAX_SIZE);
349
350 if (len || version) {
351 v9fs_string_read(req, len, version);
352 }
353
354 v9fs_req_free(req);
355}
356
357
358static P9Req *v9fs_tattach(QVirtio9P *v9p, uint32_t fid, uint32_t n_uname,
359 uint16_t tag)
360{
361 const char *uname = "";
362 const char *aname = "";
363 P9Req *req = v9fs_req_init(v9p, 4 + 4 + 2 + 2 + 4, P9_TATTACH, tag);
364
365 v9fs_uint32_write(req, fid);
366 v9fs_uint32_write(req, P9_NOFID);
367 v9fs_string_write(req, uname);
368 v9fs_string_write(req, aname);
369 v9fs_uint32_write(req, n_uname);
370 v9fs_req_send(req);
371 return req;
372}
373
374typedef char v9fs_qid[13];
375
376
377static void v9fs_rattach(P9Req *req, v9fs_qid *qid)
378{
379 v9fs_req_recv(req, P9_RATTACH);
380 if (qid) {
381 v9fs_memread(req, qid, 13);
382 }
383 v9fs_req_free(req);
384}
385
386
387static P9Req *v9fs_twalk(QVirtio9P *v9p, uint32_t fid, uint32_t newfid,
388 uint16_t nwname, char *const wnames[], uint16_t tag)
389{
390 P9Req *req;
391 int i;
392 uint32_t body_size = 4 + 4 + 2;
393
394 for (i = 0; i < nwname; i++) {
395 uint16_t wname_size = v9fs_string_size(wnames[i]);
396
397 g_assert_cmpint(body_size, <=, UINT32_MAX - wname_size);
398 body_size += wname_size;
399 }
400 req = v9fs_req_init(v9p, body_size, P9_TWALK, tag);
401 v9fs_uint32_write(req, fid);
402 v9fs_uint32_write(req, newfid);
403 v9fs_uint16_write(req, nwname);
404 for (i = 0; i < nwname; i++) {
405 v9fs_string_write(req, wnames[i]);
406 }
407 v9fs_req_send(req);
408 return req;
409}
410
411
412static void v9fs_rwalk(P9Req *req, uint16_t *nwqid, v9fs_qid **wqid)
413{
414 uint16_t local_nwqid;
415
416 v9fs_req_recv(req, P9_RWALK);
417 v9fs_uint16_read(req, &local_nwqid);
418 if (nwqid) {
419 *nwqid = local_nwqid;
420 }
421 if (wqid) {
422 *wqid = g_malloc(local_nwqid * 13);
423 v9fs_memread(req, *wqid, local_nwqid * 13);
424 }
425 v9fs_req_free(req);
426}
427
428
429static P9Req *v9fs_treaddir(QVirtio9P *v9p, uint32_t fid, uint64_t offset,
430 uint32_t count, uint16_t tag)
431{
432 P9Req *req;
433
434 req = v9fs_req_init(v9p, 4 + 8 + 4, P9_TREADDIR, tag);
435 v9fs_uint32_write(req, fid);
436 v9fs_uint64_write(req, offset);
437 v9fs_uint32_write(req, count);
438 v9fs_req_send(req);
439 return req;
440}
441
442struct V9fsDirent {
443 v9fs_qid qid;
444 uint64_t offset;
445 uint8_t type;
446 char *name;
447 struct V9fsDirent *next;
448};
449
450
451static void v9fs_rreaddir(P9Req *req, uint32_t *count, uint32_t *nentries,
452 struct V9fsDirent **entries)
453{
454 uint32_t local_count;
455 struct V9fsDirent *e = NULL;
456 uint16_t slen;
457 uint32_t n = 0;
458
459 v9fs_req_recv(req, P9_RREADDIR);
460 v9fs_uint32_read(req, &local_count);
461
462 if (count) {
463 *count = local_count;
464 }
465
466 for (int32_t togo = (int32_t)local_count;
467 togo >= 13 + 8 + 1 + 2;
468 togo -= 13 + 8 + 1 + 2 + slen, ++n)
469 {
470 if (!e) {
471 e = g_new(struct V9fsDirent, 1);
472 if (entries) {
473 *entries = e;
474 }
475 } else {
476 e = e->next = g_new(struct V9fsDirent, 1);
477 }
478 e->next = NULL;
479
480 v9fs_memread(req, &e->qid, 13);
481 v9fs_uint64_read(req, &e->offset);
482 v9fs_uint8_read(req, &e->type);
483 v9fs_string_read(req, &slen, &e->name);
484 }
485
486 if (nentries) {
487 *nentries = n;
488 }
489
490 v9fs_req_free(req);
491}
492
493static void v9fs_free_dirents(struct V9fsDirent *e)
494{
495 struct V9fsDirent *next = NULL;
496
497 for (; e; e = next) {
498 next = e->next;
499 g_free(e->name);
500 g_free(e);
501 }
502}
503
504
505static P9Req *v9fs_tlopen(QVirtio9P *v9p, uint32_t fid, uint32_t flags,
506 uint16_t tag)
507{
508 P9Req *req;
509
510 req = v9fs_req_init(v9p, 4 + 4, P9_TLOPEN, tag);
511 v9fs_uint32_write(req, fid);
512 v9fs_uint32_write(req, flags);
513 v9fs_req_send(req);
514 return req;
515}
516
517
518static void v9fs_rlopen(P9Req *req, v9fs_qid *qid, uint32_t *iounit)
519{
520 v9fs_req_recv(req, P9_RLOPEN);
521 if (qid) {
522 v9fs_memread(req, qid, 13);
523 } else {
524 v9fs_memskip(req, 13);
525 }
526 if (iounit) {
527 v9fs_uint32_read(req, iounit);
528 }
529 v9fs_req_free(req);
530}
531
532
533static P9Req *v9fs_twrite(QVirtio9P *v9p, uint32_t fid, uint64_t offset,
534 uint32_t count, const void *data, uint16_t tag)
535{
536 P9Req *req;
537 uint32_t body_size = 4 + 8 + 4;
538
539 g_assert_cmpint(body_size, <=, UINT32_MAX - count);
540 body_size += count;
541 req = v9fs_req_init(v9p, body_size, P9_TWRITE, tag);
542 v9fs_uint32_write(req, fid);
543 v9fs_uint64_write(req, offset);
544 v9fs_uint32_write(req, count);
545 v9fs_memwrite(req, data, count);
546 v9fs_req_send(req);
547 return req;
548}
549
550
551static void v9fs_rwrite(P9Req *req, uint32_t *count)
552{
553 v9fs_req_recv(req, P9_RWRITE);
554 if (count) {
555 v9fs_uint32_read(req, count);
556 }
557 v9fs_req_free(req);
558}
559
560
561static P9Req *v9fs_tflush(QVirtio9P *v9p, uint16_t oldtag, uint16_t tag)
562{
563 P9Req *req;
564
565 req = v9fs_req_init(v9p, 2, P9_TFLUSH, tag);
566 v9fs_uint32_write(req, oldtag);
567 v9fs_req_send(req);
568 return req;
569}
570
571
572static void v9fs_rflush(P9Req *req)
573{
574 v9fs_req_recv(req, P9_RFLUSH);
575 v9fs_req_free(req);
576}
577
578static void do_version(QVirtio9P *v9p)
579{
580 const char *version = "9P2000.L";
581 uint16_t server_len;
582 g_autofree char *server_version = NULL;
583 P9Req *req;
584
585 req = v9fs_tversion(v9p, P9_MAX_SIZE, version, P9_NOTAG);
586 v9fs_req_wait_for_reply(req, NULL);
587 v9fs_rversion(req, &server_len, &server_version);
588
589 g_assert_cmpmem(server_version, server_len, version, strlen(version));
590}
591
592
593static uint32_t do_walk(QVirtio9P *v9p, const char *path)
594{
595 char **wnames;
596 P9Req *req;
597 const uint32_t fid = genfid();
598
599 int nwnames = split(path, "/", &wnames);
600
601 req = v9fs_twalk(v9p, 0, fid, nwnames, wnames, 0);
602 v9fs_req_wait_for_reply(req, NULL);
603 v9fs_rwalk(req, NULL, NULL);
604
605 split_free(&wnames);
606 return fid;
607}
608
609static void fs_version(void *obj, void *data, QGuestAllocator *t_alloc)
610{
611 alloc = t_alloc;
612 do_version(obj);
613}
614
615static void do_attach(QVirtio9P *v9p)
616{
617 P9Req *req;
618
619 do_version(v9p);
620 req = v9fs_tattach(v9p, 0, getuid(), 0);
621 v9fs_req_wait_for_reply(req, NULL);
622 v9fs_rattach(req, NULL);
623}
624
625static void fs_attach(void *obj, void *data, QGuestAllocator *t_alloc)
626{
627 alloc = t_alloc;
628 do_attach(obj);
629}
630
631static void fs_walk(void *obj, void *data, QGuestAllocator *t_alloc)
632{
633 QVirtio9P *v9p = obj;
634 alloc = t_alloc;
635 char *wnames[P9_MAXWELEM];
636 uint16_t nwqid;
637 g_autofree v9fs_qid *wqid = NULL;
638 int i;
639 P9Req *req;
640
641 for (i = 0; i < P9_MAXWELEM; i++) {
642 wnames[i] = g_strdup_printf(QTEST_V9FS_SYNTH_WALK_FILE, i);
643 }
644
645 do_attach(v9p);
646 req = v9fs_twalk(v9p, 0, 1, P9_MAXWELEM, wnames, 0);
647 v9fs_req_wait_for_reply(req, NULL);
648 v9fs_rwalk(req, &nwqid, &wqid);
649
650 g_assert_cmpint(nwqid, ==, P9_MAXWELEM);
651
652 for (i = 0; i < P9_MAXWELEM; i++) {
653 g_free(wnames[i]);
654 }
655}
656
657static bool fs_dirents_contain_name(struct V9fsDirent *e, const char* name)
658{
659 for (; e; e = e->next) {
660 if (!strcmp(e->name, name)) {
661 return true;
662 }
663 }
664 return false;
665}
666
667
668static P9Req *v9fs_tmkdir(QVirtio9P *v9p, uint32_t dfid, const char *name,
669 uint32_t mode, uint32_t gid, uint16_t tag)
670{
671 P9Req *req;
672
673 uint32_t body_size = 4 + 4 + 4;
674 uint16_t string_size = v9fs_string_size(name);
675
676 g_assert_cmpint(body_size, <=, UINT32_MAX - string_size);
677 body_size += string_size;
678
679 req = v9fs_req_init(v9p, body_size, P9_TMKDIR, tag);
680 v9fs_uint32_write(req, dfid);
681 v9fs_string_write(req, name);
682 v9fs_uint32_write(req, mode);
683 v9fs_uint32_write(req, gid);
684 v9fs_req_send(req);
685 return req;
686}
687
688
689static void v9fs_rmkdir(P9Req *req, v9fs_qid *qid)
690{
691 v9fs_req_recv(req, P9_RMKDIR);
692 if (qid) {
693 v9fs_memread(req, qid, 13);
694 } else {
695 v9fs_memskip(req, 13);
696 }
697 v9fs_req_free(req);
698}
699
700
701static P9Req *v9fs_tlcreate(QVirtio9P *v9p, uint32_t fid, const char *name,
702 uint32_t flags, uint32_t mode, uint32_t gid,
703 uint16_t tag)
704{
705 P9Req *req;
706
707 uint32_t body_size = 4 + 4 + 4 + 4;
708 uint16_t string_size = v9fs_string_size(name);
709
710 g_assert_cmpint(body_size, <=, UINT32_MAX - string_size);
711 body_size += string_size;
712
713 req = v9fs_req_init(v9p, body_size, P9_TLCREATE, tag);
714 v9fs_uint32_write(req, fid);
715 v9fs_string_write(req, name);
716 v9fs_uint32_write(req, flags);
717 v9fs_uint32_write(req, mode);
718 v9fs_uint32_write(req, gid);
719 v9fs_req_send(req);
720 return req;
721}
722
723
724static void v9fs_rlcreate(P9Req *req, v9fs_qid *qid, uint32_t *iounit)
725{
726 v9fs_req_recv(req, P9_RLCREATE);
727 if (qid) {
728 v9fs_memread(req, qid, 13);
729 } else {
730 v9fs_memskip(req, 13);
731 }
732 if (iounit) {
733 v9fs_uint32_read(req, iounit);
734 }
735 v9fs_req_free(req);
736}
737
738
739static P9Req *v9fs_tsymlink(QVirtio9P *v9p, uint32_t fid, const char *name,
740 const char *symtgt, uint32_t gid, uint16_t tag)
741{
742 P9Req *req;
743
744 uint32_t body_size = 4 + 4;
745 uint16_t string_size = v9fs_string_size(name) + v9fs_string_size(symtgt);
746
747 g_assert_cmpint(body_size, <=, UINT32_MAX - string_size);
748 body_size += string_size;
749
750 req = v9fs_req_init(v9p, body_size, P9_TSYMLINK, tag);
751 v9fs_uint32_write(req, fid);
752 v9fs_string_write(req, name);
753 v9fs_string_write(req, symtgt);
754 v9fs_uint32_write(req, gid);
755 v9fs_req_send(req);
756 return req;
757}
758
759
760static void v9fs_rsymlink(P9Req *req, v9fs_qid *qid)
761{
762 v9fs_req_recv(req, P9_RSYMLINK);
763 if (qid) {
764 v9fs_memread(req, qid, 13);
765 } else {
766 v9fs_memskip(req, 13);
767 }
768 v9fs_req_free(req);
769}
770
771
772static P9Req *v9fs_tlink(QVirtio9P *v9p, uint32_t dfid, uint32_t fid,
773 const char *name, uint16_t tag)
774{
775 P9Req *req;
776
777 uint32_t body_size = 4 + 4;
778 uint16_t string_size = v9fs_string_size(name);
779
780 g_assert_cmpint(body_size, <=, UINT32_MAX - string_size);
781 body_size += string_size;
782
783 req = v9fs_req_init(v9p, body_size, P9_TLINK, tag);
784 v9fs_uint32_write(req, dfid);
785 v9fs_uint32_write(req, fid);
786 v9fs_string_write(req, name);
787 v9fs_req_send(req);
788 return req;
789}
790
791
792static void v9fs_rlink(P9Req *req)
793{
794 v9fs_req_recv(req, P9_RLINK);
795 v9fs_req_free(req);
796}
797
798
799static P9Req *v9fs_tunlinkat(QVirtio9P *v9p, uint32_t dirfd, const char *name,
800 uint32_t flags, uint16_t tag)
801{
802 P9Req *req;
803
804 uint32_t body_size = 4 + 4;
805 uint16_t string_size = v9fs_string_size(name);
806
807 g_assert_cmpint(body_size, <=, UINT32_MAX - string_size);
808 body_size += string_size;
809
810 req = v9fs_req_init(v9p, body_size, P9_TUNLINKAT, tag);
811 v9fs_uint32_write(req, dirfd);
812 v9fs_string_write(req, name);
813 v9fs_uint32_write(req, flags);
814 v9fs_req_send(req);
815 return req;
816}
817
818
819static void v9fs_runlinkat(P9Req *req)
820{
821 v9fs_req_recv(req, P9_RUNLINKAT);
822 v9fs_req_free(req);
823}
824
825
826static void fs_readdir(void *obj, void *data, QGuestAllocator *t_alloc)
827{
828 QVirtio9P *v9p = obj;
829 alloc = t_alloc;
830 char *const wnames[] = { g_strdup(QTEST_V9FS_SYNTH_READDIR_DIR) };
831 uint16_t nqid;
832 v9fs_qid qid;
833 uint32_t count, nentries;
834 struct V9fsDirent *entries = NULL;
835 P9Req *req;
836
837 do_attach(v9p);
838 req = v9fs_twalk(v9p, 0, 1, 1, wnames, 0);
839 v9fs_req_wait_for_reply(req, NULL);
840 v9fs_rwalk(req, &nqid, NULL);
841 g_assert_cmpint(nqid, ==, 1);
842
843 req = v9fs_tlopen(v9p, 1, O_DIRECTORY, 0);
844 v9fs_req_wait_for_reply(req, NULL);
845 v9fs_rlopen(req, &qid, NULL);
846
847
848
849
850 req = v9fs_treaddir(v9p, 1, 0, P9_MAX_SIZE - 11, 0);
851 v9fs_req_wait_for_reply(req, NULL);
852 v9fs_rreaddir(req, &count, &nentries, &entries);
853
854
855
856
857
858 g_assert_cmpint(
859 nentries, ==,
860 QTEST_V9FS_SYNTH_READDIR_NFILES + 2
861 );
862
863
864
865
866
867 g_assert_cmpint(fs_dirents_contain_name(entries, "."), ==, true);
868 g_assert_cmpint(fs_dirents_contain_name(entries, ".."), ==, true);
869 for (int i = 0; i < QTEST_V9FS_SYNTH_READDIR_NFILES; ++i) {
870 g_autofree char *name =
871 g_strdup_printf(QTEST_V9FS_SYNTH_READDIR_FILE, i);
872 g_assert_cmpint(fs_dirents_contain_name(entries, name), ==, true);
873 }
874
875 v9fs_free_dirents(entries);
876 g_free(wnames[0]);
877}
878
879
880static void do_readdir_split(QVirtio9P *v9p, uint32_t count)
881{
882 char *const wnames[] = { g_strdup(QTEST_V9FS_SYNTH_READDIR_DIR) };
883 uint16_t nqid;
884 v9fs_qid qid;
885 uint32_t nentries, npartialentries;
886 struct V9fsDirent *entries, *tail, *partialentries;
887 P9Req *req;
888 int fid;
889 uint64_t offset;
890
891 do_attach(v9p);
892
893 fid = 1;
894 offset = 0;
895 entries = NULL;
896 nentries = 0;
897 tail = NULL;
898
899 req = v9fs_twalk(v9p, 0, fid, 1, wnames, 0);
900 v9fs_req_wait_for_reply(req, NULL);
901 v9fs_rwalk(req, &nqid, NULL);
902 g_assert_cmpint(nqid, ==, 1);
903
904 req = v9fs_tlopen(v9p, fid, O_DIRECTORY, 0);
905 v9fs_req_wait_for_reply(req, NULL);
906 v9fs_rlopen(req, &qid, NULL);
907
908
909
910
911
912 while (true) {
913 npartialentries = 0;
914 partialentries = NULL;
915
916 req = v9fs_treaddir(v9p, fid, offset, count, 0);
917 v9fs_req_wait_for_reply(req, NULL);
918 v9fs_rreaddir(req, &count, &npartialentries, &partialentries);
919 if (npartialentries > 0 && partialentries) {
920 if (!entries) {
921 entries = partialentries;
922 nentries = npartialentries;
923 tail = partialentries;
924 } else {
925 tail->next = partialentries;
926 nentries += npartialentries;
927 }
928 while (tail->next) {
929 tail = tail->next;
930 }
931 offset = tail->offset;
932 } else {
933 break;
934 }
935 }
936
937 g_assert_cmpint(
938 nentries, ==,
939 QTEST_V9FS_SYNTH_READDIR_NFILES + 2
940 );
941
942
943
944
945
946 g_assert_cmpint(fs_dirents_contain_name(entries, "."), ==, true);
947 g_assert_cmpint(fs_dirents_contain_name(entries, ".."), ==, true);
948 for (int i = 0; i < QTEST_V9FS_SYNTH_READDIR_NFILES; ++i) {
949 char *name = g_strdup_printf(QTEST_V9FS_SYNTH_READDIR_FILE, i);
950 g_assert_cmpint(fs_dirents_contain_name(entries, name), ==, true);
951 g_free(name);
952 }
953
954 v9fs_free_dirents(entries);
955
956 g_free(wnames[0]);
957}
958
959static void fs_walk_no_slash(void *obj, void *data, QGuestAllocator *t_alloc)
960{
961 QVirtio9P *v9p = obj;
962 alloc = t_alloc;
963 char *const wnames[] = { g_strdup(" /") };
964 P9Req *req;
965 uint32_t err;
966
967 do_attach(v9p);
968 req = v9fs_twalk(v9p, 0, 1, 1, wnames, 0);
969 v9fs_req_wait_for_reply(req, NULL);
970 v9fs_rlerror(req, &err);
971
972 g_assert_cmpint(err, ==, ENOENT);
973
974 g_free(wnames[0]);
975}
976
977static void fs_walk_dotdot(void *obj, void *data, QGuestAllocator *t_alloc)
978{
979 QVirtio9P *v9p = obj;
980 alloc = t_alloc;
981 char *const wnames[] = { g_strdup("..") };
982 v9fs_qid root_qid;
983 g_autofree v9fs_qid *wqid = NULL;
984 P9Req *req;
985
986 do_version(v9p);
987 req = v9fs_tattach(v9p, 0, getuid(), 0);
988 v9fs_req_wait_for_reply(req, NULL);
989 v9fs_rattach(req, &root_qid);
990
991 req = v9fs_twalk(v9p, 0, 1, 1, wnames, 0);
992 v9fs_req_wait_for_reply(req, NULL);
993 v9fs_rwalk(req, NULL, &wqid);
994
995 g_assert_cmpmem(&root_qid, 13, wqid[0], 13);
996
997 g_free(wnames[0]);
998}
999
1000static void fs_lopen(void *obj, void *data, QGuestAllocator *t_alloc)
1001{
1002 QVirtio9P *v9p = obj;
1003 alloc = t_alloc;
1004 char *const wnames[] = { g_strdup(QTEST_V9FS_SYNTH_LOPEN_FILE) };
1005 P9Req *req;
1006
1007 do_attach(v9p);
1008 req = v9fs_twalk(v9p, 0, 1, 1, wnames, 0);
1009 v9fs_req_wait_for_reply(req, NULL);
1010 v9fs_rwalk(req, NULL, NULL);
1011
1012 req = v9fs_tlopen(v9p, 1, O_WRONLY, 0);
1013 v9fs_req_wait_for_reply(req, NULL);
1014 v9fs_rlopen(req, NULL, NULL);
1015
1016 g_free(wnames[0]);
1017}
1018
1019static void fs_write(void *obj, void *data, QGuestAllocator *t_alloc)
1020{
1021 QVirtio9P *v9p = obj;
1022 alloc = t_alloc;
1023 static const uint32_t write_count = P9_MAX_SIZE / 2;
1024 char *const wnames[] = { g_strdup(QTEST_V9FS_SYNTH_WRITE_FILE) };
1025 g_autofree char *buf = g_malloc0(write_count);
1026 uint32_t count;
1027 P9Req *req;
1028
1029 do_attach(v9p);
1030 req = v9fs_twalk(v9p, 0, 1, 1, wnames, 0);
1031 v9fs_req_wait_for_reply(req, NULL);
1032 v9fs_rwalk(req, NULL, NULL);
1033
1034 req = v9fs_tlopen(v9p, 1, O_WRONLY, 0);
1035 v9fs_req_wait_for_reply(req, NULL);
1036 v9fs_rlopen(req, NULL, NULL);
1037
1038 req = v9fs_twrite(v9p, 1, 0, write_count, buf, 0);
1039 v9fs_req_wait_for_reply(req, NULL);
1040 v9fs_rwrite(req, &count);
1041 g_assert_cmpint(count, ==, write_count);
1042
1043 g_free(wnames[0]);
1044}
1045
1046static void fs_flush_success(void *obj, void *data, QGuestAllocator *t_alloc)
1047{
1048 QVirtio9P *v9p = obj;
1049 alloc = t_alloc;
1050 char *const wnames[] = { g_strdup(QTEST_V9FS_SYNTH_FLUSH_FILE) };
1051 P9Req *req, *flush_req;
1052 uint32_t reply_len;
1053 uint8_t should_block;
1054
1055 do_attach(v9p);
1056 req = v9fs_twalk(v9p, 0, 1, 1, wnames, 0);
1057 v9fs_req_wait_for_reply(req, NULL);
1058 v9fs_rwalk(req, NULL, NULL);
1059
1060 req = v9fs_tlopen(v9p, 1, O_WRONLY, 0);
1061 v9fs_req_wait_for_reply(req, NULL);
1062 v9fs_rlopen(req, NULL, NULL);
1063
1064
1065
1066
1067 should_block = 1;
1068 req = v9fs_twrite(v9p, 1, 0, sizeof(should_block), &should_block, 0);
1069
1070 flush_req = v9fs_tflush(v9p, req->tag, 1);
1071
1072
1073
1074
1075 v9fs_req_wait_for_reply(req, &reply_len);
1076 g_assert_cmpint(reply_len, ==, 0);
1077 v9fs_req_free(req);
1078 v9fs_rflush(flush_req);
1079
1080 g_free(wnames[0]);
1081}
1082
1083static void fs_flush_ignored(void *obj, void *data, QGuestAllocator *t_alloc)
1084{
1085 QVirtio9P *v9p = obj;
1086 alloc = t_alloc;
1087 char *const wnames[] = { g_strdup(QTEST_V9FS_SYNTH_FLUSH_FILE) };
1088 P9Req *req, *flush_req;
1089 uint32_t count;
1090 uint8_t should_block;
1091
1092 do_attach(v9p);
1093 req = v9fs_twalk(v9p, 0, 1, 1, wnames, 0);
1094 v9fs_req_wait_for_reply(req, NULL);
1095 v9fs_rwalk(req, NULL, NULL);
1096
1097 req = v9fs_tlopen(v9p, 1, O_WRONLY, 0);
1098 v9fs_req_wait_for_reply(req, NULL);
1099 v9fs_rlopen(req, NULL, NULL);
1100
1101
1102
1103
1104 should_block = 0;
1105 req = v9fs_twrite(v9p, 1, 0, sizeof(should_block), &should_block, 0);
1106
1107 flush_req = v9fs_tflush(v9p, req->tag, 1);
1108
1109
1110
1111
1112 v9fs_req_wait_for_reply(req, NULL);
1113 v9fs_rwrite(req, &count);
1114 g_assert_cmpint(count, ==, sizeof(should_block));
1115 v9fs_rflush(flush_req);
1116
1117 g_free(wnames[0]);
1118}
1119
1120static void do_mkdir(QVirtio9P *v9p, const char *path, const char *cname)
1121{
1122 g_autofree char *name = g_strdup(cname);
1123 uint32_t fid;
1124 P9Req *req;
1125
1126 fid = do_walk(v9p, path);
1127
1128 req = v9fs_tmkdir(v9p, fid, name, 0750, 0, 0);
1129 v9fs_req_wait_for_reply(req, NULL);
1130 v9fs_rmkdir(req, NULL);
1131}
1132
1133
1134static uint32_t do_lcreate(QVirtio9P *v9p, const char *path,
1135 const char *cname)
1136{
1137 g_autofree char *name = g_strdup(cname);
1138 uint32_t fid;
1139 P9Req *req;
1140
1141 fid = do_walk(v9p, path);
1142
1143 req = v9fs_tlcreate(v9p, fid, name, 0, 0750, 0, 0);
1144 v9fs_req_wait_for_reply(req, NULL);
1145 v9fs_rlcreate(req, NULL, NULL);
1146
1147 return fid;
1148}
1149
1150
1151static void do_symlink(QVirtio9P *v9p, const char *path, const char *clink,
1152 const char *to)
1153{
1154 g_autofree char *name = g_strdup(clink);
1155 g_autofree char *dst = g_strdup(to);
1156 uint32_t fid;
1157 P9Req *req;
1158
1159 fid = do_walk(v9p, path);
1160
1161 req = v9fs_tsymlink(v9p, fid, name, dst, 0, 0);
1162 v9fs_req_wait_for_reply(req, NULL);
1163 v9fs_rsymlink(req, NULL);
1164}
1165
1166
1167static void do_hardlink(QVirtio9P *v9p, const char *path, const char *clink,
1168 const char *to)
1169{
1170 uint32_t dfid, fid;
1171 P9Req *req;
1172
1173 dfid = do_walk(v9p, path);
1174 fid = do_walk(v9p, to);
1175
1176 req = v9fs_tlink(v9p, dfid, fid, clink, 0);
1177 v9fs_req_wait_for_reply(req, NULL);
1178 v9fs_rlink(req);
1179}
1180
1181static void do_unlinkat(QVirtio9P *v9p, const char *atpath, const char *rpath,
1182 uint32_t flags)
1183{
1184 g_autofree char *name = g_strdup(rpath);
1185 uint32_t fid;
1186 P9Req *req;
1187
1188 fid = do_walk(v9p, atpath);
1189
1190 req = v9fs_tunlinkat(v9p, fid, name, flags, 0);
1191 v9fs_req_wait_for_reply(req, NULL);
1192 v9fs_runlinkat(req);
1193}
1194
1195static void fs_readdir_split_128(void *obj, void *data,
1196 QGuestAllocator *t_alloc)
1197{
1198 alloc = t_alloc;
1199 do_readdir_split(obj, 128);
1200}
1201
1202static void fs_readdir_split_256(void *obj, void *data,
1203 QGuestAllocator *t_alloc)
1204{
1205 alloc = t_alloc;
1206 do_readdir_split(obj, 256);
1207}
1208
1209static void fs_readdir_split_512(void *obj, void *data,
1210 QGuestAllocator *t_alloc)
1211{
1212 alloc = t_alloc;
1213 do_readdir_split(obj, 512);
1214}
1215
1216
1217
1218
1219static void fs_create_dir(void *obj, void *data, QGuestAllocator *t_alloc)
1220{
1221 QVirtio9P *v9p = obj;
1222 alloc = t_alloc;
1223 struct stat st;
1224 g_autofree char *root_path = virtio_9p_test_path("");
1225 g_autofree char *new_dir = virtio_9p_test_path("01");
1226
1227 g_assert(root_path != NULL);
1228
1229 do_attach(v9p);
1230 do_mkdir(v9p, "/", "01");
1231
1232
1233 g_assert(stat(new_dir, &st) == 0);
1234
1235 g_assert((st.st_mode & S_IFMT) == S_IFDIR);
1236}
1237
1238static void fs_unlinkat_dir(void *obj, void *data, QGuestAllocator *t_alloc)
1239{
1240 QVirtio9P *v9p = obj;
1241 alloc = t_alloc;
1242 struct stat st;
1243 g_autofree char *root_path = virtio_9p_test_path("");
1244 g_autofree char *new_dir = virtio_9p_test_path("02");
1245
1246 g_assert(root_path != NULL);
1247
1248 do_attach(v9p);
1249 do_mkdir(v9p, "/", "02");
1250
1251
1252 g_assert(stat(new_dir, &st) == 0);
1253
1254 g_assert((st.st_mode & S_IFMT) == S_IFDIR);
1255
1256 do_unlinkat(v9p, "/", "02", P9_DOTL_AT_REMOVEDIR);
1257
1258 g_assert(stat(new_dir, &st) != 0);
1259}
1260
1261static void fs_create_file(void *obj, void *data, QGuestAllocator *t_alloc)
1262{
1263 QVirtio9P *v9p = obj;
1264 alloc = t_alloc;
1265 struct stat st;
1266 g_autofree char *new_file = virtio_9p_test_path("03/1st_file");
1267
1268 do_attach(v9p);
1269 do_mkdir(v9p, "/", "03");
1270 do_lcreate(v9p, "03", "1st_file");
1271
1272
1273 g_assert(stat(new_file, &st) == 0);
1274
1275 g_assert((st.st_mode & S_IFMT) == S_IFREG);
1276}
1277
1278static void fs_unlinkat_file(void *obj, void *data, QGuestAllocator *t_alloc)
1279{
1280 QVirtio9P *v9p = obj;
1281 alloc = t_alloc;
1282 struct stat st;
1283 g_autofree char *new_file = virtio_9p_test_path("04/doa_file");
1284
1285 do_attach(v9p);
1286 do_mkdir(v9p, "/", "04");
1287 do_lcreate(v9p, "04", "doa_file");
1288
1289
1290 g_assert(stat(new_file, &st) == 0);
1291
1292 g_assert((st.st_mode & S_IFMT) == S_IFREG);
1293
1294 do_unlinkat(v9p, "04", "doa_file", 0);
1295
1296 g_assert(stat(new_file, &st) != 0);
1297}
1298
1299static void fs_symlink_file(void *obj, void *data, QGuestAllocator *t_alloc)
1300{
1301 QVirtio9P *v9p = obj;
1302 alloc = t_alloc;
1303 struct stat st;
1304 g_autofree char *real_file = virtio_9p_test_path("05/real_file");
1305 g_autofree char *symlink_file = virtio_9p_test_path("05/symlink_file");
1306
1307 do_attach(v9p);
1308 do_mkdir(v9p, "/", "05");
1309 do_lcreate(v9p, "05", "real_file");
1310 g_assert(stat(real_file, &st) == 0);
1311 g_assert((st.st_mode & S_IFMT) == S_IFREG);
1312
1313 do_symlink(v9p, "05", "symlink_file", "real_file");
1314
1315
1316 g_assert(stat(symlink_file, &st) == 0);
1317}
1318
1319static void fs_unlinkat_symlink(void *obj, void *data,
1320 QGuestAllocator *t_alloc)
1321{
1322 QVirtio9P *v9p = obj;
1323 alloc = t_alloc;
1324 struct stat st;
1325 g_autofree char *real_file = virtio_9p_test_path("06/real_file");
1326 g_autofree char *symlink_file = virtio_9p_test_path("06/symlink_file");
1327
1328 do_attach(v9p);
1329 do_mkdir(v9p, "/", "06");
1330 do_lcreate(v9p, "06", "real_file");
1331 g_assert(stat(real_file, &st) == 0);
1332 g_assert((st.st_mode & S_IFMT) == S_IFREG);
1333
1334 do_symlink(v9p, "06", "symlink_file", "real_file");
1335 g_assert(stat(symlink_file, &st) == 0);
1336
1337 do_unlinkat(v9p, "06", "symlink_file", 0);
1338
1339 g_assert(stat(symlink_file, &st) != 0);
1340}
1341
1342static void fs_hardlink_file(void *obj, void *data, QGuestAllocator *t_alloc)
1343{
1344 QVirtio9P *v9p = obj;
1345 alloc = t_alloc;
1346 struct stat st_real, st_link;
1347 g_autofree char *real_file = virtio_9p_test_path("07/real_file");
1348 g_autofree char *hardlink_file = virtio_9p_test_path("07/hardlink_file");
1349
1350 do_attach(v9p);
1351 do_mkdir(v9p, "/", "07");
1352 do_lcreate(v9p, "07", "real_file");
1353 g_assert(stat(real_file, &st_real) == 0);
1354 g_assert((st_real.st_mode & S_IFMT) == S_IFREG);
1355
1356 do_hardlink(v9p, "07", "hardlink_file", "07/real_file");
1357
1358
1359 g_assert(stat(hardlink_file, &st_link) == 0);
1360
1361 g_assert((st_link.st_mode & S_IFMT) == S_IFREG);
1362 g_assert(st_link.st_dev == st_real.st_dev);
1363 g_assert(st_link.st_ino == st_real.st_ino);
1364}
1365
1366static void fs_unlinkat_hardlink(void *obj, void *data,
1367 QGuestAllocator *t_alloc)
1368{
1369 QVirtio9P *v9p = obj;
1370 alloc = t_alloc;
1371 struct stat st_real, st_link;
1372 g_autofree char *real_file = virtio_9p_test_path("08/real_file");
1373 g_autofree char *hardlink_file = virtio_9p_test_path("08/hardlink_file");
1374
1375 do_attach(v9p);
1376 do_mkdir(v9p, "/", "08");
1377 do_lcreate(v9p, "08", "real_file");
1378 g_assert(stat(real_file, &st_real) == 0);
1379 g_assert((st_real.st_mode & S_IFMT) == S_IFREG);
1380
1381 do_hardlink(v9p, "08", "hardlink_file", "08/real_file");
1382 g_assert(stat(hardlink_file, &st_link) == 0);
1383
1384 do_unlinkat(v9p, "08", "hardlink_file", 0);
1385
1386 g_assert(stat(hardlink_file, &st_link) != 0);
1387
1388 g_assert(stat(real_file, &st_real) == 0);
1389}
1390
1391static void *assign_9p_local_driver(GString *cmd_line, void *arg)
1392{
1393 virtio_9p_assign_local_driver(cmd_line, "security_model=mapped-xattr");
1394 return arg;
1395}
1396
1397static void register_virtio_9p_test(void)
1398{
1399
1400 QOSGraphTestOptions opts = {
1401 };
1402
1403
1404 qos_add_test("synth/config", "virtio-9p", pci_config, &opts);
1405 qos_add_test("synth/version/basic", "virtio-9p", fs_version, &opts);
1406 qos_add_test("synth/attach/basic", "virtio-9p", fs_attach, &opts);
1407 qos_add_test("synth/walk/basic", "virtio-9p", fs_walk, &opts);
1408 qos_add_test("synth/walk/no_slash", "virtio-9p", fs_walk_no_slash,
1409 &opts);
1410 qos_add_test("synth/walk/dotdot_from_root", "virtio-9p",
1411 fs_walk_dotdot, &opts);
1412 qos_add_test("synth/lopen/basic", "virtio-9p", fs_lopen, &opts);
1413 qos_add_test("synth/write/basic", "virtio-9p", fs_write, &opts);
1414 qos_add_test("synth/flush/success", "virtio-9p", fs_flush_success,
1415 &opts);
1416 qos_add_test("synth/flush/ignored", "virtio-9p", fs_flush_ignored,
1417 &opts);
1418 qos_add_test("synth/readdir/basic", "virtio-9p", fs_readdir, &opts);
1419 qos_add_test("synth/readdir/split_512", "virtio-9p",
1420 fs_readdir_split_512, &opts);
1421 qos_add_test("synth/readdir/split_256", "virtio-9p",
1422 fs_readdir_split_256, &opts);
1423 qos_add_test("synth/readdir/split_128", "virtio-9p",
1424 fs_readdir_split_128, &opts);
1425
1426
1427
1428
1429
1430
1431
1432
1433 if (!g_test_slow()) {
1434 return;
1435 }
1436
1437 opts.before = assign_9p_local_driver;
1438 qos_add_test("local/config", "virtio-9p", pci_config, &opts);
1439 qos_add_test("local/create_dir", "virtio-9p", fs_create_dir, &opts);
1440 qos_add_test("local/unlinkat_dir", "virtio-9p", fs_unlinkat_dir, &opts);
1441 qos_add_test("local/create_file", "virtio-9p", fs_create_file, &opts);
1442 qos_add_test("local/unlinkat_file", "virtio-9p", fs_unlinkat_file, &opts);
1443 qos_add_test("local/symlink_file", "virtio-9p", fs_symlink_file, &opts);
1444 qos_add_test("local/unlinkat_symlink", "virtio-9p", fs_unlinkat_symlink,
1445 &opts);
1446 qos_add_test("local/hardlink_file", "virtio-9p", fs_hardlink_file, &opts);
1447 qos_add_test("local/unlinkat_hardlink", "virtio-9p", fs_unlinkat_hardlink,
1448 &opts);
1449}
1450
1451libqos_init(register_virtio_9p_test);
1452
1453static void __attribute__((constructor)) construct_9p_test(void)
1454{
1455
1456 virtio_9p_create_local_test_dir();
1457}
1458
1459static void __attribute__((destructor)) destruct_9p_test(void)
1460{
1461
1462 virtio_9p_remove_local_test_dir();
1463}
1464