diff options
Diffstat (limited to 'tests/qtest/virtio-9p-test.c')
| -rw-r--r-- | tests/qtest/virtio-9p-test.c | 1499 |
1 files changed, 1499 insertions, 0 deletions
diff --git a/tests/qtest/virtio-9p-test.c b/tests/qtest/virtio-9p-test.c new file mode 100644 index 000000000..41fed41de --- /dev/null +++ b/tests/qtest/virtio-9p-test.c @@ -0,0 +1,1499 @@ +/* + * 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. + */ + +/* + * Not so fast! You might want to read the 9p developer docs first: + * https://wiki.qemu.org/Documentation/9p + */ + +#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; + +/* + * Used to auto generate new fids. Start with arbitrary high value to avoid + * collision with hard coded fids in basic test code. + */ +static uint32_t fid_generator = 1000; + +static uint32_t genfid(void) +{ + return fid_generator++; +} + +/** + * Splits the @a in string by @a delim into individual (non empty) strings + * and outputs them to @a out. The output array @a out is NULL terminated. + * + * Output array @a out must be freed by calling split_free(). + * + * @returns number of individual elements in output array @a out (without the + * final NULL terminating element) + */ +static int split(const char *in, const char *delim, char ***out) +{ + int n = 0, i = 0; + char *tmp, *p; + + tmp = g_strdup(in); + for (p = strtok(tmp, delim); p != NULL; p = strtok(NULL, delim)) { + if (strlen(p) > 0) { + ++n; + } + } + g_free(tmp); + + *out = g_new0(char *, n + 1); /* last element NULL delimiter */ + + tmp = g_strdup(in); + for (p = strtok(tmp, delim); p != NULL; p = strtok(NULL, delim)) { + if (strlen(p) > 0) { + (*out)[i++] = g_strdup(p); + } + } + g_free(tmp); + + return n; +} + +static void split_free(char ***out) +{ + int i; + for (i = 0; (*out)[i]; ++i) { + g_free((*out)[i]); + } + g_free(*out); + *out = NULL; +} + +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_uint8_read(P9Req *req, uint8_t *val) +{ + v9fs_memread(req, val, 1); +} + +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); +} + +static void v9fs_uint64_read(P9Req *req, uint64_t *val) +{ + v9fs_memread(req, val, 8); + le64_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 + 1); + v9fs_memread(req, *string, local_len); + (*string)[local_len] = 0; + } 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_RMKDIR ? "RMKDIR" : + id == P9_RLCREATE ? "RLCREATE" : + id == P9_RSYMLINK ? "RSYMLINK" : + id == P9_RLINK ? "RLINK" : + id == P9_RUNLINKAT ? "RUNLINKAT" : + id == P9_RFLUSH ? "RFLUSH" : + id == P9_RREADDIR ? "READDIR" : + "<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] Treaddir tag[2] fid[4] offset[8] count[4] */ +static P9Req *v9fs_treaddir(QVirtio9P *v9p, uint32_t fid, uint64_t offset, + uint32_t count, uint16_t tag) +{ + P9Req *req; + + req = v9fs_req_init(v9p, 4 + 8 + 4, P9_TREADDIR, tag); + v9fs_uint32_write(req, fid); + v9fs_uint64_write(req, offset); + v9fs_uint32_write(req, count); + v9fs_req_send(req); + return req; +} + +struct V9fsDirent { + v9fs_qid qid; + uint64_t offset; + uint8_t type; + char *name; + struct V9fsDirent *next; +}; + +/* size[4] Rreaddir tag[2] count[4] data[count] */ +static void v9fs_rreaddir(P9Req *req, uint32_t *count, uint32_t *nentries, + struct V9fsDirent **entries) +{ + uint32_t local_count; + struct V9fsDirent *e = NULL; + uint16_t slen; + uint32_t n = 0; + + v9fs_req_recv(req, P9_RREADDIR); + v9fs_uint32_read(req, &local_count); + + if (count) { + *count = local_count; + } + + for (int32_t togo = (int32_t)local_count; + togo >= 13 + 8 + 1 + 2; + togo -= 13 + 8 + 1 + 2 + slen, ++n) + { + if (!e) { + e = g_malloc(sizeof(struct V9fsDirent)); + if (entries) { + *entries = e; + } + } else { + e = e->next = g_malloc(sizeof(struct V9fsDirent)); + } + e->next = NULL; + /* qid[13] offset[8] type[1] name[s] */ + v9fs_memread(req, &e->qid, 13); + v9fs_uint64_read(req, &e->offset); + v9fs_uint8_read(req, &e->type); + v9fs_string_read(req, &slen, &e->name); + } + + if (nentries) { + *nentries = n; + } + + v9fs_req_free(req); +} + +static void v9fs_free_dirents(struct V9fsDirent *e) +{ + struct V9fsDirent *next = NULL; + + for (; e; e = next) { + next = e->next; + g_free(e->name); + g_free(e); + } +} + +/* 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 do_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, 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); +} + +/* utility function: walk to requested dir and return fid for that dir */ +static uint32_t do_walk(QVirtio9P *v9p, const char *path) +{ + char **wnames; + P9Req *req; + const uint32_t fid = genfid(); + + int nwnames = split(path, "/", &wnames); + + req = v9fs_twalk(v9p, 0, fid, nwnames, wnames, 0); + v9fs_req_wait_for_reply(req, NULL); + v9fs_rwalk(req, NULL, NULL); + + split_free(&wnames); + return fid; +} + +static void fs_version(void *obj, void *data, QGuestAllocator *t_alloc) +{ + alloc = t_alloc; + do_version(obj); +} + +static void do_attach(QVirtio9P *v9p) +{ + P9Req *req; + + do_version(v9p); + req = v9fs_tattach(v9p, 0, getuid(), 0); + v9fs_req_wait_for_reply(req, NULL); + v9fs_rattach(req, NULL); +} + +static void fs_attach(void *obj, void *data, QGuestAllocator *t_alloc) +{ + alloc = t_alloc; + do_attach(obj); +} + +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); + } + + do_attach(v9p); + 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 bool fs_dirents_contain_name(struct V9fsDirent *e, const char* name) +{ + for (; e; e = e->next) { + if (!strcmp(e->name, name)) { + return true; + } + } + return false; +} + +/* size[4] Tmkdir tag[2] dfid[4] name[s] mode[4] gid[4] */ +static P9Req *v9fs_tmkdir(QVirtio9P *v9p, uint32_t dfid, const char *name, + uint32_t mode, uint32_t gid, uint16_t tag) +{ + P9Req *req; + + uint32_t body_size = 4 + 4 + 4; + uint16_t string_size = v9fs_string_size(name); + + g_assert_cmpint(body_size, <=, UINT32_MAX - string_size); + body_size += string_size; + + req = v9fs_req_init(v9p, body_size, P9_TMKDIR, tag); + v9fs_uint32_write(req, dfid); + v9fs_string_write(req, name); + v9fs_uint32_write(req, mode); + v9fs_uint32_write(req, gid); + v9fs_req_send(req); + return req; +} + +/* size[4] Rmkdir tag[2] qid[13] */ +static void v9fs_rmkdir(P9Req *req, v9fs_qid *qid) +{ + v9fs_req_recv(req, P9_RMKDIR); + if (qid) { + v9fs_memread(req, qid, 13); + } else { + v9fs_memskip(req, 13); + } + v9fs_req_free(req); +} + +/* size[4] Tlcreate tag[2] fid[4] name[s] flags[4] mode[4] gid[4] */ +static P9Req *v9fs_tlcreate(QVirtio9P *v9p, uint32_t fid, const char *name, + uint32_t flags, uint32_t mode, uint32_t gid, + uint16_t tag) +{ + P9Req *req; + + uint32_t body_size = 4 + 4 + 4 + 4; + uint16_t string_size = v9fs_string_size(name); + + g_assert_cmpint(body_size, <=, UINT32_MAX - string_size); + body_size += string_size; + + req = v9fs_req_init(v9p, body_size, P9_TLCREATE, tag); + v9fs_uint32_write(req, fid); + v9fs_string_write(req, name); + v9fs_uint32_write(req, flags); + v9fs_uint32_write(req, mode); + v9fs_uint32_write(req, gid); + v9fs_req_send(req); + return req; +} + +/* size[4] Rlcreate tag[2] qid[13] iounit[4] */ +static void v9fs_rlcreate(P9Req *req, v9fs_qid *qid, uint32_t *iounit) +{ + v9fs_req_recv(req, P9_RLCREATE); + 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] Tsymlink tag[2] fid[4] name[s] symtgt[s] gid[4] */ +static P9Req *v9fs_tsymlink(QVirtio9P *v9p, uint32_t fid, const char *name, + const char *symtgt, uint32_t gid, uint16_t tag) +{ + P9Req *req; + + uint32_t body_size = 4 + 4; + uint16_t string_size = v9fs_string_size(name) + v9fs_string_size(symtgt); + + g_assert_cmpint(body_size, <=, UINT32_MAX - string_size); + body_size += string_size; + + req = v9fs_req_init(v9p, body_size, P9_TSYMLINK, tag); + v9fs_uint32_write(req, fid); + v9fs_string_write(req, name); + v9fs_string_write(req, symtgt); + v9fs_uint32_write(req, gid); + v9fs_req_send(req); + return req; +} + +/* size[4] Rsymlink tag[2] qid[13] */ +static void v9fs_rsymlink(P9Req *req, v9fs_qid *qid) +{ + v9fs_req_recv(req, P9_RSYMLINK); + if (qid) { + v9fs_memread(req, qid, 13); + } else { + v9fs_memskip(req, 13); + } + v9fs_req_free(req); +} + +/* size[4] Tlink tag[2] dfid[4] fid[4] name[s] */ +static P9Req *v9fs_tlink(QVirtio9P *v9p, uint32_t dfid, uint32_t fid, + const char *name, uint16_t tag) +{ + P9Req *req; + + uint32_t body_size = 4 + 4; + uint16_t string_size = v9fs_string_size(name); + + g_assert_cmpint(body_size, <=, UINT32_MAX - string_size); + body_size += string_size; + + req = v9fs_req_init(v9p, body_size, P9_TLINK, tag); + v9fs_uint32_write(req, dfid); + v9fs_uint32_write(req, fid); + v9fs_string_write(req, name); + v9fs_req_send(req); + return req; +} + +/* size[4] Rlink tag[2] */ +static void v9fs_rlink(P9Req *req) +{ + v9fs_req_recv(req, P9_RLINK); + v9fs_req_free(req); +} + +/* size[4] Tunlinkat tag[2] dirfd[4] name[s] flags[4] */ +static P9Req *v9fs_tunlinkat(QVirtio9P *v9p, uint32_t dirfd, const char *name, + uint32_t flags, uint16_t tag) +{ + P9Req *req; + + uint32_t body_size = 4 + 4; + uint16_t string_size = v9fs_string_size(name); + + g_assert_cmpint(body_size, <=, UINT32_MAX - string_size); + body_size += string_size; + + req = v9fs_req_init(v9p, body_size, P9_TUNLINKAT, tag); + v9fs_uint32_write(req, dirfd); + v9fs_string_write(req, name); + v9fs_uint32_write(req, flags); + v9fs_req_send(req); + return req; +} + +/* size[4] Runlinkat tag[2] */ +static void v9fs_runlinkat(P9Req *req) +{ + v9fs_req_recv(req, P9_RUNLINKAT); + v9fs_req_free(req); +} + +/* basic readdir test where reply fits into a single response message */ +static void fs_readdir(void *obj, void *data, QGuestAllocator *t_alloc) +{ + QVirtio9P *v9p = obj; + alloc = t_alloc; + char *const wnames[] = { g_strdup(QTEST_V9FS_SYNTH_READDIR_DIR) }; + uint16_t nqid; + v9fs_qid qid; + uint32_t count, nentries; + struct V9fsDirent *entries = NULL; + P9Req *req; + + do_attach(v9p); + req = v9fs_twalk(v9p, 0, 1, 1, wnames, 0); + v9fs_req_wait_for_reply(req, NULL); + v9fs_rwalk(req, &nqid, NULL); + g_assert_cmpint(nqid, ==, 1); + + req = v9fs_tlopen(v9p, 1, O_DIRECTORY, 0); + v9fs_req_wait_for_reply(req, NULL); + v9fs_rlopen(req, &qid, NULL); + + /* + * submit count = msize - 11, because 11 is the header size of Rreaddir + */ + req = v9fs_treaddir(v9p, 1, 0, P9_MAX_SIZE - 11, 0); + v9fs_req_wait_for_reply(req, NULL); + v9fs_rreaddir(req, &count, &nentries, &entries); + + /* + * Assuming msize (P9_MAX_SIZE) is large enough so we can retrieve all + * dir entries with only one readdir request. + */ + g_assert_cmpint( + nentries, ==, + QTEST_V9FS_SYNTH_READDIR_NFILES + 2 /* "." and ".." */ + ); + + /* + * Check all file names exist in returned entries, ignore their order + * though. + */ + g_assert_cmpint(fs_dirents_contain_name(entries, "."), ==, true); + g_assert_cmpint(fs_dirents_contain_name(entries, ".."), ==, true); + for (int i = 0; i < QTEST_V9FS_SYNTH_READDIR_NFILES; ++i) { + char *name = g_strdup_printf(QTEST_V9FS_SYNTH_READDIR_FILE, i); + g_assert_cmpint(fs_dirents_contain_name(entries, name), ==, true); + g_free(name); + } + + v9fs_free_dirents(entries); + g_free(wnames[0]); +} + +/* readdir test where overall request is split over several messages */ +static void do_readdir_split(QVirtio9P *v9p, uint32_t count) +{ + char *const wnames[] = { g_strdup(QTEST_V9FS_SYNTH_READDIR_DIR) }; + uint16_t nqid; + v9fs_qid qid; + uint32_t nentries, npartialentries; + struct V9fsDirent *entries, *tail, *partialentries; + P9Req *req; + int fid; + uint64_t offset; + + do_attach(v9p); + + fid = 1; + offset = 0; + entries = NULL; + nentries = 0; + tail = NULL; + + req = v9fs_twalk(v9p, 0, fid, 1, wnames, 0); + v9fs_req_wait_for_reply(req, NULL); + v9fs_rwalk(req, &nqid, NULL); + g_assert_cmpint(nqid, ==, 1); + + req = v9fs_tlopen(v9p, fid, O_DIRECTORY, 0); + v9fs_req_wait_for_reply(req, NULL); + v9fs_rlopen(req, &qid, NULL); + + /* + * send as many Treaddir requests as required to get all directory + * entries + */ + while (true) { + npartialentries = 0; + partialentries = NULL; + + req = v9fs_treaddir(v9p, fid, offset, count, 0); + v9fs_req_wait_for_reply(req, NULL); + v9fs_rreaddir(req, &count, &npartialentries, &partialentries); + if (npartialentries > 0 && partialentries) { + if (!entries) { + entries = partialentries; + nentries = npartialentries; + tail = partialentries; + } else { + tail->next = partialentries; + nentries += npartialentries; + } + while (tail->next) { + tail = tail->next; + } + offset = tail->offset; + } else { + break; + } + } + + g_assert_cmpint( + nentries, ==, + QTEST_V9FS_SYNTH_READDIR_NFILES + 2 /* "." and ".." */ + ); + + /* + * Check all file names exist in returned entries, ignore their order + * though. + */ + g_assert_cmpint(fs_dirents_contain_name(entries, "."), ==, true); + g_assert_cmpint(fs_dirents_contain_name(entries, ".."), ==, true); + for (int i = 0; i < QTEST_V9FS_SYNTH_READDIR_NFILES; ++i) { + char *name = g_strdup_printf(QTEST_V9FS_SYNTH_READDIR_FILE, i); + g_assert_cmpint(fs_dirents_contain_name(entries, name), ==, true); + g_free(name); + } + + v9fs_free_dirents(entries); + + g_free(wnames[0]); +} + +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; + + do_attach(v9p); + 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; + + do_version(v9p); + 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; + + do_attach(v9p); + 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; + + do_attach(v9p); + 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; + + do_attach(v9p); + 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; + + do_attach(v9p); + 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 do_mkdir(QVirtio9P *v9p, const char *path, const char *cname) +{ + char *const name = g_strdup(cname); + uint32_t fid; + P9Req *req; + + fid = do_walk(v9p, path); + + req = v9fs_tmkdir(v9p, fid, name, 0750, 0, 0); + v9fs_req_wait_for_reply(req, NULL); + v9fs_rmkdir(req, NULL); + + g_free(name); +} + +/* create a regular file with Tlcreate and return file's fid */ +static uint32_t do_lcreate(QVirtio9P *v9p, const char *path, + const char *cname) +{ + char *const name = g_strdup(cname); + uint32_t fid; + P9Req *req; + + fid = do_walk(v9p, path); + + req = v9fs_tlcreate(v9p, fid, name, 0, 0750, 0, 0); + v9fs_req_wait_for_reply(req, NULL); + v9fs_rlcreate(req, NULL, NULL); + + g_free(name); + return fid; +} + +/* create symlink named @a clink in directory @a path pointing to @a to */ +static void do_symlink(QVirtio9P *v9p, const char *path, const char *clink, + const char *to) +{ + char *const name = g_strdup(clink); + char *const dst = g_strdup(to); + uint32_t fid; + P9Req *req; + + fid = do_walk(v9p, path); + + req = v9fs_tsymlink(v9p, fid, name, dst, 0, 0); + v9fs_req_wait_for_reply(req, NULL); + v9fs_rsymlink(req, NULL); + + g_free(dst); + g_free(name); +} + +/* create a hard link named @a clink in directory @a path pointing to @a to */ +static void do_hardlink(QVirtio9P *v9p, const char *path, const char *clink, + const char *to) +{ + uint32_t dfid, fid; + P9Req *req; + + dfid = do_walk(v9p, path); + fid = do_walk(v9p, to); + + req = v9fs_tlink(v9p, dfid, fid, clink, 0); + v9fs_req_wait_for_reply(req, NULL); + v9fs_rlink(req); +} + +static void do_unlinkat(QVirtio9P *v9p, const char *atpath, const char *rpath, + uint32_t flags) +{ + char *const name = g_strdup(rpath); + uint32_t fid; + P9Req *req; + + fid = do_walk(v9p, atpath); + + req = v9fs_tunlinkat(v9p, fid, name, flags, 0); + v9fs_req_wait_for_reply(req, NULL); + v9fs_runlinkat(req); + + g_free(name); +} + +static void fs_readdir_split_128(void *obj, void *data, + QGuestAllocator *t_alloc) +{ + alloc = t_alloc; + do_readdir_split(obj, 128); +} + +static void fs_readdir_split_256(void *obj, void *data, + QGuestAllocator *t_alloc) +{ + alloc = t_alloc; + do_readdir_split(obj, 256); +} + +static void fs_readdir_split_512(void *obj, void *data, + QGuestAllocator *t_alloc) +{ + alloc = t_alloc; + do_readdir_split(obj, 512); +} + + +/* tests using the 9pfs 'local' fs driver */ + +static void fs_create_dir(void *obj, void *data, QGuestAllocator *t_alloc) +{ + QVirtio9P *v9p = obj; + alloc = t_alloc; + struct stat st; + char *root_path = virtio_9p_test_path(""); + char *new_dir = virtio_9p_test_path("01"); + + g_assert(root_path != NULL); + + do_attach(v9p); + do_mkdir(v9p, "/", "01"); + + /* check if created directory really exists now ... */ + g_assert(stat(new_dir, &st) == 0); + /* ... and is actually a directory */ + g_assert((st.st_mode & S_IFMT) == S_IFDIR); + + g_free(new_dir); + g_free(root_path); +} + +static void fs_unlinkat_dir(void *obj, void *data, QGuestAllocator *t_alloc) +{ + QVirtio9P *v9p = obj; + alloc = t_alloc; + struct stat st; + char *root_path = virtio_9p_test_path(""); + char *new_dir = virtio_9p_test_path("02"); + + g_assert(root_path != NULL); + + do_attach(v9p); + do_mkdir(v9p, "/", "02"); + + /* check if created directory really exists now ... */ + g_assert(stat(new_dir, &st) == 0); + /* ... and is actually a directory */ + g_assert((st.st_mode & S_IFMT) == S_IFDIR); + + do_unlinkat(v9p, "/", "02", AT_REMOVEDIR); + /* directory should be gone now */ + g_assert(stat(new_dir, &st) != 0); + + g_free(new_dir); + g_free(root_path); +} + +static void fs_create_file(void *obj, void *data, QGuestAllocator *t_alloc) +{ + QVirtio9P *v9p = obj; + alloc = t_alloc; + struct stat st; + char *new_file = virtio_9p_test_path("03/1st_file"); + + do_attach(v9p); + do_mkdir(v9p, "/", "03"); + do_lcreate(v9p, "03", "1st_file"); + + /* check if created file exists now ... */ + g_assert(stat(new_file, &st) == 0); + /* ... and is a regular file */ + g_assert((st.st_mode & S_IFMT) == S_IFREG); + + g_free(new_file); +} + +static void fs_unlinkat_file(void *obj, void *data, QGuestAllocator *t_alloc) +{ + QVirtio9P *v9p = obj; + alloc = t_alloc; + struct stat st; + char *new_file = virtio_9p_test_path("04/doa_file"); + + do_attach(v9p); + do_mkdir(v9p, "/", "04"); + do_lcreate(v9p, "04", "doa_file"); + + /* check if created file exists now ... */ + g_assert(stat(new_file, &st) == 0); + /* ... and is a regular file */ + g_assert((st.st_mode & S_IFMT) == S_IFREG); + + do_unlinkat(v9p, "04", "doa_file", 0); + /* file should be gone now */ + g_assert(stat(new_file, &st) != 0); + + g_free(new_file); +} + +static void fs_symlink_file(void *obj, void *data, QGuestAllocator *t_alloc) +{ + QVirtio9P *v9p = obj; + alloc = t_alloc; + struct stat st; + char *real_file = virtio_9p_test_path("05/real_file"); + char *symlink_file = virtio_9p_test_path("05/symlink_file"); + + do_attach(v9p); + do_mkdir(v9p, "/", "05"); + do_lcreate(v9p, "05", "real_file"); + g_assert(stat(real_file, &st) == 0); + g_assert((st.st_mode & S_IFMT) == S_IFREG); + + do_symlink(v9p, "05", "symlink_file", "real_file"); + + /* check if created link exists now */ + g_assert(stat(symlink_file, &st) == 0); + + g_free(symlink_file); + g_free(real_file); +} + +static void fs_unlinkat_symlink(void *obj, void *data, + QGuestAllocator *t_alloc) +{ + QVirtio9P *v9p = obj; + alloc = t_alloc; + struct stat st; + char *real_file = virtio_9p_test_path("06/real_file"); + char *symlink_file = virtio_9p_test_path("06/symlink_file"); + + do_attach(v9p); + do_mkdir(v9p, "/", "06"); + do_lcreate(v9p, "06", "real_file"); + g_assert(stat(real_file, &st) == 0); + g_assert((st.st_mode & S_IFMT) == S_IFREG); + + do_symlink(v9p, "06", "symlink_file", "real_file"); + g_assert(stat(symlink_file, &st) == 0); + + do_unlinkat(v9p, "06", "symlink_file", 0); + /* symlink should be gone now */ + g_assert(stat(symlink_file, &st) != 0); + + g_free(symlink_file); + g_free(real_file); +} + +static void fs_hardlink_file(void *obj, void *data, QGuestAllocator *t_alloc) +{ + QVirtio9P *v9p = obj; + alloc = t_alloc; + struct stat st_real, st_link; + char *real_file = virtio_9p_test_path("07/real_file"); + char *hardlink_file = virtio_9p_test_path("07/hardlink_file"); + + do_attach(v9p); + do_mkdir(v9p, "/", "07"); + do_lcreate(v9p, "07", "real_file"); + g_assert(stat(real_file, &st_real) == 0); + g_assert((st_real.st_mode & S_IFMT) == S_IFREG); + + do_hardlink(v9p, "07", "hardlink_file", "07/real_file"); + + /* check if link exists now ... */ + g_assert(stat(hardlink_file, &st_link) == 0); + /* ... and it's a hard link, right? */ + g_assert((st_link.st_mode & S_IFMT) == S_IFREG); + g_assert(st_link.st_dev == st_real.st_dev); + g_assert(st_link.st_ino == st_real.st_ino); + + g_free(hardlink_file); + g_free(real_file); +} + +static void fs_unlinkat_hardlink(void *obj, void *data, + QGuestAllocator *t_alloc) +{ + QVirtio9P *v9p = obj; + alloc = t_alloc; + struct stat st_real, st_link; + char *real_file = virtio_9p_test_path("08/real_file"); + char *hardlink_file = virtio_9p_test_path("08/hardlink_file"); + + do_attach(v9p); + do_mkdir(v9p, "/", "08"); + do_lcreate(v9p, "08", "real_file"); + g_assert(stat(real_file, &st_real) == 0); + g_assert((st_real.st_mode & S_IFMT) == S_IFREG); + + do_hardlink(v9p, "08", "hardlink_file", "08/real_file"); + g_assert(stat(hardlink_file, &st_link) == 0); + + do_unlinkat(v9p, "08", "hardlink_file", 0); + /* symlink should be gone now */ + g_assert(stat(hardlink_file, &st_link) != 0); + /* and old file should still exist */ + g_assert(stat(real_file, &st_real) == 0); + + g_free(hardlink_file); + g_free(real_file); +} + +static void *assign_9p_local_driver(GString *cmd_line, void *arg) +{ + virtio_9p_assign_local_driver(cmd_line, "security_model=mapped-xattr"); + return arg; +} + +static void register_virtio_9p_test(void) +{ + + QOSGraphTestOptions opts = { + }; + + /* 9pfs test cases using the 'synth' filesystem driver */ + qos_add_test("synth/config", "virtio-9p", pci_config, &opts); + qos_add_test("synth/version/basic", "virtio-9p", fs_version, &opts); + qos_add_test("synth/attach/basic", "virtio-9p", fs_attach, &opts); + qos_add_test("synth/walk/basic", "virtio-9p", fs_walk, &opts); + qos_add_test("synth/walk/no_slash", "virtio-9p", fs_walk_no_slash, + &opts); + qos_add_test("synth/walk/dotdot_from_root", "virtio-9p", + fs_walk_dotdot, &opts); + qos_add_test("synth/lopen/basic", "virtio-9p", fs_lopen, &opts); + qos_add_test("synth/write/basic", "virtio-9p", fs_write, &opts); + qos_add_test("synth/flush/success", "virtio-9p", fs_flush_success, + &opts); + qos_add_test("synth/flush/ignored", "virtio-9p", fs_flush_ignored, + &opts); + qos_add_test("synth/readdir/basic", "virtio-9p", fs_readdir, &opts); + qos_add_test("synth/readdir/split_512", "virtio-9p", + fs_readdir_split_512, &opts); + qos_add_test("synth/readdir/split_256", "virtio-9p", + fs_readdir_split_256, &opts); + qos_add_test("synth/readdir/split_128", "virtio-9p", + fs_readdir_split_128, &opts); + + + /* 9pfs test cases using the 'local' filesystem driver */ + + /* + * XXX: Until we are sure that these tests can run everywhere, + * keep them as "slow" so that they aren't run with "make check". + */ + if (!g_test_slow()) { + return; + } + + opts.before = assign_9p_local_driver; + qos_add_test("local/config", "virtio-9p", pci_config, &opts); + qos_add_test("local/create_dir", "virtio-9p", fs_create_dir, &opts); + qos_add_test("local/unlinkat_dir", "virtio-9p", fs_unlinkat_dir, &opts); + qos_add_test("local/create_file", "virtio-9p", fs_create_file, &opts); + qos_add_test("local/unlinkat_file", "virtio-9p", fs_unlinkat_file, &opts); + qos_add_test("local/symlink_file", "virtio-9p", fs_symlink_file, &opts); + qos_add_test("local/unlinkat_symlink", "virtio-9p", fs_unlinkat_symlink, + &opts); + qos_add_test("local/hardlink_file", "virtio-9p", fs_hardlink_file, &opts); + qos_add_test("local/unlinkat_hardlink", "virtio-9p", fs_unlinkat_hardlink, + &opts); +} + +libqos_init(register_virtio_9p_test); + +static void __attribute__((constructor)) construct_9p_test(void) +{ + /* make sure test dir for the 'local' tests exists */ + virtio_9p_create_local_test_dir(); +} + +static void __attribute__((destructor)) destruct_9p_test(void) +{ + /* remove previously created test dir when test suite completed */ + virtio_9p_remove_local_test_dir(); +} |