Re: [PATCH 3/6] tests/9pfs: compare QIDs in fs_walk_none() test
On Freitag, 11. März 2022 18:02:36 CET Greg Kurz wrote:
> On Fri, 11 Mar 2022 17:39:56 +0100
>
> Christian Schoenebeck wrote:
> > On Freitag, 11. März 2022 17:11:24 CET Greg Kurz wrote:
> > > On Thu, 10 Mar 2022 10:04:50 +0100
> > >
> > > Christian Schoenebeck wrote:
> > > > On Mittwoch, 9. März 2022 15:49:04 CET Christian Schoenebeck wrote:
> > > > > Extend previously added fs_walk_none() test by comparing the QID
> > > > > of the root fid with the QID of the cloned fid. They should be
> > > > > equal.
> > >
> > > Ha, I understand your suggestion of changing the name now :-) but I'll
> > > personally leave it named according to the test scenario of "sending
> > > a Twalk with no names" and checking everything that is expected in this
> > > case.
> >
> > NP
> >
> > > > > Signed-off-by: Christian Schoenebeck
> > > > > ---
> > > > >
> > > > > tests/qtest/virtio-9p-test.c | 70
> > > > >
> > > > > 1 file changed, 70 insertions(+)
> > > > >
> > > > > diff --git a/tests/qtest/virtio-9p-test.c
> > > > > b/tests/qtest/virtio-9p-test.c
> > > > > index 6c00da03f4..9098e21173 100644
> > > > > --- a/tests/qtest/virtio-9p-test.c
> > > > > +++ b/tests/qtest/virtio-9p-test.c
> > > > > @@ -146,6 +146,11 @@ static void v9fs_uint16_read(P9Req *req,
> > > > > uint16_t
> > > > > *val) le16_to_cpus(val);
> > > > >
> > > > > }
> > > > >
> > > > > +static void v9fs_int16_read(P9Req *req, int16_t *val)
> > > > > +{
> > > > > +v9fs_uint16_read(req, (uint16_t *)val);
> > > > > +}
> > > > > +
> > > > >
> > > > > static void v9fs_uint32_write(P9Req *req, uint32_t val)
> > > > > {
> > > > >
> > > > > uint32_t le_val = cpu_to_le32(val);
> > > > >
> > > > > @@ -166,12 +171,22 @@ static void v9fs_uint32_read(P9Req *req,
> > > > > uint32_t
> > > > > *val) le32_to_cpus(val);
> > > > >
> > > > > }
> > > > >
> > > > > +static void v9fs_int32_read(P9Req *req, int32_t *val)
> > > > > +{
> > > > > +v9fs_uint32_read(req, (uint32_t *)val);
> > > > > +}
> > > > > +
> > > > >
> > > > > static void v9fs_uint64_read(P9Req *req, uint64_t *val)
> > > > > {
> > > > >
> > > > > v9fs_memread(req, val, 8);
> > > > > le64_to_cpus(val);
> > > > >
> > > > > }
> > > > >
> > > > > +static void v9fs_int64_read(P9Req *req, int64_t *val)
> > > > > +{
> > > > > +v9fs_uint64_read(req, (uint64_t *)val);
> > > > > +}
> > > > > +
> > > > >
> > > > > /* len[2] string[len] */
> > > > > static uint16_t v9fs_string_size(const char *string)
> > > > > {
> > > > >
> > > > > @@ -425,6 +440,40 @@ static void v9fs_rwalk(P9Req *req, uint16_t
> > > > > *nwqid,
> > > > > v9fs_qid **wqid) v9fs_req_free(req);
> > > > >
> > > > > }
> > > > >
> > > > > +/* size[4] Tstat tag[2] fid[4] */
> > > > > +static P9Req *v9fs_tstat(QVirtio9P *v9p, uint32_t fid, uint16_t
> > > > > tag)
> > >
> > > Tstat/Rstat aren't part of 9p2000.L, you should use Tgetattr/Rgetattr
> > > instead (see https://github.com/chaos/diod/blob/master/protocol.md).
> >
> > Ah right, I forgot.
> >
> > > > > +{
> > > > > +P9Req *req;
> > > > > +
> > > > > +req = v9fs_req_init(v9p, 4, P9_TSTAT, tag);
> > > > > +v9fs_uint32_write(req, fid);
> > > > > +v9fs_req_send(req);
> > > > > +return req;
> > > > > +}
> > > > > +
> > > > > +/* size[4] Rstat tag[2] stat[n] */
> > > > > +static void v9fs_rstat(P9Req *req, struct V9fsStat *st)
> > > > > +{
> > > > > +v9fs_req_recv(req, P9_RSTAT);
> > > > > +
> > >
> > > For the records, this is a stat[n], i.e. "n[2] followed by n bytes of
> > > data forming the parameter", so you should read an uint16_t first.
> > >
> > > > > +v9fs_int16_read(req, &st->size);
> >
> > Which I did here? --^
>
> From the BUGS section of
> https://ericvh.github.io/9p-rfc/rfc9p2000.html#anchor32 :
>
> BUGS
> To make the contents of a directory, such as returned by
> read(5), easy to parse, each directory entry begins with a
> size field. For consistency, the entries in Twstat and
> Rstat messages also contain their size, which means the size
>
> appears twice. For example, the Rstat message is formatted
> ^
> as ``(4+1+2+2+n)[4] Rstat tag[2] n[2] (n-2)[2] type[2]
> dev[4]...,'' where n is the value returned by Styx->packdir.
>
> I realized that when giving a try to convert a v9fs_qid to a V9fsQID on
> top of this patch.
Ouch, what a trap. Yeah, I didn't realize that.
> > > > > +v9fs_int16_read(req, &st->type);
> > > > > +v9fs_int32_read(req, &st->dev);
> > > > > +v9fs_uint8_read(req, &st->qid.type);
> > > > > +v9fs_uint32_read(req, &st->qid.version);
> > > > > +v9fs_uint64_read(req, &st->qid.path);
> > > > > +v9fs_int32_read(req, &st->mode);
> > > > > +v9fs_int32_read(req, &st->mtime);
> > > > > +v9fs_int32_read(req, &st->atime);
> > > > > +v9fs_int64_read(req, &st->l
Re: [PATCH 3/6] tests/9pfs: compare QIDs in fs_walk_none() test
On Fri, 11 Mar 2022 17:39:56 +0100
Christian Schoenebeck wrote:
> On Freitag, 11. März 2022 17:11:24 CET Greg Kurz wrote:
> > On Thu, 10 Mar 2022 10:04:50 +0100
> >
> > Christian Schoenebeck wrote:
> > > On Mittwoch, 9. März 2022 15:49:04 CET Christian Schoenebeck wrote:
> > > > Extend previously added fs_walk_none() test by comparing the QID
> > > > of the root fid with the QID of the cloned fid. They should be
> > > > equal.
> >
> > Ha, I understand your suggestion of changing the name now :-) but I'll
> > personally leave it named according to the test scenario of "sending
> > a Twalk with no names" and checking everything that is expected in this
> > case.
>
> NP
>
> > > > Signed-off-by: Christian Schoenebeck
> > > > ---
> > > >
> > > > tests/qtest/virtio-9p-test.c | 70
> > > > 1 file changed, 70 insertions(+)
> > > >
> > > > diff --git a/tests/qtest/virtio-9p-test.c b/tests/qtest/virtio-9p-test.c
> > > > index 6c00da03f4..9098e21173 100644
> > > > --- a/tests/qtest/virtio-9p-test.c
> > > > +++ b/tests/qtest/virtio-9p-test.c
> > > > @@ -146,6 +146,11 @@ static void v9fs_uint16_read(P9Req *req, uint16_t
> > > > *val) le16_to_cpus(val);
> > > >
> > > > }
> > > >
> > > > +static void v9fs_int16_read(P9Req *req, int16_t *val)
> > > > +{
> > > > +v9fs_uint16_read(req, (uint16_t *)val);
> > > > +}
> > > > +
> > > >
> > > > static void v9fs_uint32_write(P9Req *req, uint32_t val)
> > > > {
> > > >
> > > > uint32_t le_val = cpu_to_le32(val);
> > > >
> > > > @@ -166,12 +171,22 @@ static void v9fs_uint32_read(P9Req *req, uint32_t
> > > > *val) le32_to_cpus(val);
> > > >
> > > > }
> > > >
> > > > +static void v9fs_int32_read(P9Req *req, int32_t *val)
> > > > +{
> > > > +v9fs_uint32_read(req, (uint32_t *)val);
> > > > +}
> > > > +
> > > >
> > > > static void v9fs_uint64_read(P9Req *req, uint64_t *val)
> > > > {
> > > >
> > > > v9fs_memread(req, val, 8);
> > > > le64_to_cpus(val);
> > > >
> > > > }
> > > >
> > > > +static void v9fs_int64_read(P9Req *req, int64_t *val)
> > > > +{
> > > > +v9fs_uint64_read(req, (uint64_t *)val);
> > > > +}
> > > > +
> > > >
> > > > /* len[2] string[len] */
> > > > static uint16_t v9fs_string_size(const char *string)
> > > > {
> > > >
> > > > @@ -425,6 +440,40 @@ static void v9fs_rwalk(P9Req *req, uint16_t *nwqid,
> > > > v9fs_qid **wqid) v9fs_req_free(req);
> > > >
> > > > }
> > > >
> > > > +/* size[4] Tstat tag[2] fid[4] */
> > > > +static P9Req *v9fs_tstat(QVirtio9P *v9p, uint32_t fid, uint16_t tag)
> >
> > Tstat/Rstat aren't part of 9p2000.L, you should use Tgetattr/Rgetattr
> > instead (see https://github.com/chaos/diod/blob/master/protocol.md).
>
> Ah right, I forgot.
>
> > > > +{
> > > > +P9Req *req;
> > > > +
> > > > +req = v9fs_req_init(v9p, 4, P9_TSTAT, tag);
> > > > +v9fs_uint32_write(req, fid);
> > > > +v9fs_req_send(req);
> > > > +return req;
> > > > +}
> > > > +
> > > > +/* size[4] Rstat tag[2] stat[n] */
> > > > +static void v9fs_rstat(P9Req *req, struct V9fsStat *st)
> > > > +{
> > > > +v9fs_req_recv(req, P9_RSTAT);
> > > > +
> >
> > For the records, this is a stat[n], i.e. "n[2] followed by n bytes of
> > data forming the parameter", so you should read an uint16_t first.
> >
> > > > +v9fs_int16_read(req, &st->size);
>
> Which I did here? --^
>
>From the BUGS section of
>https://ericvh.github.io/9p-rfc/rfc9p2000.html#anchor32 :
BUGS
To make the contents of a directory, such as returned by
read(5), easy to parse, each directory entry begins with a
size field. For consistency, the entries in Twstat and
Rstat messages also contain their size, which means the size
appears twice. For example, the Rstat message is formatted
^
as ``(4+1+2+2+n)[4] Rstat tag[2] n[2] (n-2)[2] type[2]
dev[4]...,'' where n is the value returned by Styx->packdir.
I realized that when giving a try to convert a v9fs_qid to a V9fsQID on
top of this patch.
> > > > +v9fs_int16_read(req, &st->type);
> > > > +v9fs_int32_read(req, &st->dev);
> > > > +v9fs_uint8_read(req, &st->qid.type);
> > > > +v9fs_uint32_read(req, &st->qid.version);
> > > > +v9fs_uint64_read(req, &st->qid.path);
> > > > +v9fs_int32_read(req, &st->mode);
> > > > +v9fs_int32_read(req, &st->mtime);
> > > > +v9fs_int32_read(req, &st->atime);
> > > > +v9fs_int64_read(req, &st->length);
> > > > +v9fs_string_read(req, &st->name.size, &st->name.data);
> > > > +v9fs_string_read(req, &st->uid.size, &st->uid.data);
> > > > +v9fs_string_read(req, &st->gid.size, &st->gid.data);
> > > > +v9fs_string_read(req, &st->muid.size, &st->muid.data);
> > > > +
> > > > +v9fs_req_free(req);
> > > > +}
> > > > +
> > > >
> > > > /* size[4] Treaddir tag[2] fid[4] offset[8] count[4] */
> > > > stati
Re: [PATCH 3/6] tests/9pfs: compare QIDs in fs_walk_none() test
On Freitag, 11. März 2022 17:11:24 CET Greg Kurz wrote:
> On Thu, 10 Mar 2022 10:04:50 +0100
>
> Christian Schoenebeck wrote:
> > On Mittwoch, 9. März 2022 15:49:04 CET Christian Schoenebeck wrote:
> > > Extend previously added fs_walk_none() test by comparing the QID
> > > of the root fid with the QID of the cloned fid. They should be
> > > equal.
>
> Ha, I understand your suggestion of changing the name now :-) but I'll
> personally leave it named according to the test scenario of "sending
> a Twalk with no names" and checking everything that is expected in this
> case.
NP
> > > Signed-off-by: Christian Schoenebeck
> > > ---
> > >
> > > tests/qtest/virtio-9p-test.c | 70
> > > 1 file changed, 70 insertions(+)
> > >
> > > diff --git a/tests/qtest/virtio-9p-test.c b/tests/qtest/virtio-9p-test.c
> > > index 6c00da03f4..9098e21173 100644
> > > --- a/tests/qtest/virtio-9p-test.c
> > > +++ b/tests/qtest/virtio-9p-test.c
> > > @@ -146,6 +146,11 @@ static void v9fs_uint16_read(P9Req *req, uint16_t
> > > *val) le16_to_cpus(val);
> > >
> > > }
> > >
> > > +static void v9fs_int16_read(P9Req *req, int16_t *val)
> > > +{
> > > +v9fs_uint16_read(req, (uint16_t *)val);
> > > +}
> > > +
> > >
> > > static void v9fs_uint32_write(P9Req *req, uint32_t val)
> > > {
> > >
> > > uint32_t le_val = cpu_to_le32(val);
> > >
> > > @@ -166,12 +171,22 @@ static void v9fs_uint32_read(P9Req *req, uint32_t
> > > *val) le32_to_cpus(val);
> > >
> > > }
> > >
> > > +static void v9fs_int32_read(P9Req *req, int32_t *val)
> > > +{
> > > +v9fs_uint32_read(req, (uint32_t *)val);
> > > +}
> > > +
> > >
> > > static void v9fs_uint64_read(P9Req *req, uint64_t *val)
> > > {
> > >
> > > v9fs_memread(req, val, 8);
> > > le64_to_cpus(val);
> > >
> > > }
> > >
> > > +static void v9fs_int64_read(P9Req *req, int64_t *val)
> > > +{
> > > +v9fs_uint64_read(req, (uint64_t *)val);
> > > +}
> > > +
> > >
> > > /* len[2] string[len] */
> > > static uint16_t v9fs_string_size(const char *string)
> > > {
> > >
> > > @@ -425,6 +440,40 @@ static void v9fs_rwalk(P9Req *req, uint16_t *nwqid,
> > > v9fs_qid **wqid) v9fs_req_free(req);
> > >
> > > }
> > >
> > > +/* size[4] Tstat tag[2] fid[4] */
> > > +static P9Req *v9fs_tstat(QVirtio9P *v9p, uint32_t fid, uint16_t tag)
>
> Tstat/Rstat aren't part of 9p2000.L, you should use Tgetattr/Rgetattr
> instead (see https://github.com/chaos/diod/blob/master/protocol.md).
Ah right, I forgot.
> > > +{
> > > +P9Req *req;
> > > +
> > > +req = v9fs_req_init(v9p, 4, P9_TSTAT, tag);
> > > +v9fs_uint32_write(req, fid);
> > > +v9fs_req_send(req);
> > > +return req;
> > > +}
> > > +
> > > +/* size[4] Rstat tag[2] stat[n] */
> > > +static void v9fs_rstat(P9Req *req, struct V9fsStat *st)
> > > +{
> > > +v9fs_req_recv(req, P9_RSTAT);
> > > +
>
> For the records, this is a stat[n], i.e. "n[2] followed by n bytes of
> data forming the parameter", so you should read an uint16_t first.
>
> > > +v9fs_int16_read(req, &st->size);
Which I did here? --^
> > > +v9fs_int16_read(req, &st->type);
> > > +v9fs_int32_read(req, &st->dev);
> > > +v9fs_uint8_read(req, &st->qid.type);
> > > +v9fs_uint32_read(req, &st->qid.version);
> > > +v9fs_uint64_read(req, &st->qid.path);
> > > +v9fs_int32_read(req, &st->mode);
> > > +v9fs_int32_read(req, &st->mtime);
> > > +v9fs_int32_read(req, &st->atime);
> > > +v9fs_int64_read(req, &st->length);
> > > +v9fs_string_read(req, &st->name.size, &st->name.data);
> > > +v9fs_string_read(req, &st->uid.size, &st->uid.data);
> > > +v9fs_string_read(req, &st->gid.size, &st->gid.data);
> > > +v9fs_string_read(req, &st->muid.size, &st->muid.data);
> > > +
> > > +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)
> > >
> > > @@ -1009,6 +1058,8 @@ static void fs_walk_none(void *obj, void *data,
> > > QGuestAllocator *t_alloc) v9fs_qid root_qid;
> > >
> > > g_autofree v9fs_qid *wqid = NULL;
> > > P9Req *req;
> > >
> > > +struct V9fsStat st[2];
> > > +int i;
> > >
> > > do_version(v9p);
> > > req = v9fs_tattach(v9p, 0, getuid(), 0);
> > >
> > > @@ -1021,6 +1072,25 @@ static void fs_walk_none(void *obj, void *data,
> > > QGuestAllocator *t_alloc)
> > >
> > > /* special case: no QID is returned if nwname=0 was sent */
> > > g_assert(wqid == NULL);
> > >
> > > +
> > > +req = v9fs_tstat(v9p, 0, 0);
> > > +v9fs_req_wait_for_reply(req, NULL);
> > > +v9fs_rstat(req, &st[0]);
> >
> > Probably stat-ing the root fid (0) should happen before sending Twalk, to
> > better counter the 1st fid (0) having become potentially mutated?
>
> You already have the root qid from Rattach, no need t
Re: [PATCH 3/6] tests/9pfs: compare QIDs in fs_walk_none() test
On Thu, 10 Mar 2022 10:04:50 +0100
Christian Schoenebeck wrote:
> On Mittwoch, 9. März 2022 15:49:04 CET Christian Schoenebeck wrote:
> > Extend previously added fs_walk_none() test by comparing the QID
> > of the root fid with the QID of the cloned fid. They should be
> > equal.
> >
Ha, I understand your suggestion of changing the name now :-) but I'll
personally leave it named according to the test scenario of "sending
a Twalk with no names" and checking everything that is expected in this
case.
> > Signed-off-by: Christian Schoenebeck
> > ---
> > tests/qtest/virtio-9p-test.c | 70
> > 1 file changed, 70 insertions(+)
> >
> > diff --git a/tests/qtest/virtio-9p-test.c b/tests/qtest/virtio-9p-test.c
> > index 6c00da03f4..9098e21173 100644
> > --- a/tests/qtest/virtio-9p-test.c
> > +++ b/tests/qtest/virtio-9p-test.c
> > @@ -146,6 +146,11 @@ static void v9fs_uint16_read(P9Req *req, uint16_t *val)
> > le16_to_cpus(val);
> > }
> >
> > +static void v9fs_int16_read(P9Req *req, int16_t *val)
> > +{
> > +v9fs_uint16_read(req, (uint16_t *)val);
> > +}
> > +
> > static void v9fs_uint32_write(P9Req *req, uint32_t val)
> > {
> > uint32_t le_val = cpu_to_le32(val);
> > @@ -166,12 +171,22 @@ static void v9fs_uint32_read(P9Req *req, uint32_t
> > *val) le32_to_cpus(val);
> > }
> >
> > +static void v9fs_int32_read(P9Req *req, int32_t *val)
> > +{
> > +v9fs_uint32_read(req, (uint32_t *)val);
> > +}
> > +
> > static void v9fs_uint64_read(P9Req *req, uint64_t *val)
> > {
> > v9fs_memread(req, val, 8);
> > le64_to_cpus(val);
> > }
> >
> > +static void v9fs_int64_read(P9Req *req, int64_t *val)
> > +{
> > +v9fs_uint64_read(req, (uint64_t *)val);
> > +}
> > +
> > /* len[2] string[len] */
> > static uint16_t v9fs_string_size(const char *string)
> > {
> > @@ -425,6 +440,40 @@ static void v9fs_rwalk(P9Req *req, uint16_t *nwqid,
> > v9fs_qid **wqid) v9fs_req_free(req);
> > }
> >
> > +/* size[4] Tstat tag[2] fid[4] */
> > +static P9Req *v9fs_tstat(QVirtio9P *v9p, uint32_t fid, uint16_t tag)
Tstat/Rstat aren't part of 9p2000.L, you should use Tgetattr/Rgetattr
instead (see https://github.com/chaos/diod/blob/master/protocol.md).
> > +{
> > +P9Req *req;
> > +
> > +req = v9fs_req_init(v9p, 4, P9_TSTAT, tag);
> > +v9fs_uint32_write(req, fid);
> > +v9fs_req_send(req);
> > +return req;
> > +}
> > +
> > +/* size[4] Rstat tag[2] stat[n] */
> > +static void v9fs_rstat(P9Req *req, struct V9fsStat *st)
> > +{
> > +v9fs_req_recv(req, P9_RSTAT);
> > +
For the records, this is a stat[n], i.e. "n[2] followed by n bytes of
data forming the parameter", so you should read an uint16_t first.
> > +v9fs_int16_read(req, &st->size);
> > +v9fs_int16_read(req, &st->type);
> > +v9fs_int32_read(req, &st->dev);
> > +v9fs_uint8_read(req, &st->qid.type);
> > +v9fs_uint32_read(req, &st->qid.version);
> > +v9fs_uint64_read(req, &st->qid.path);
> > +v9fs_int32_read(req, &st->mode);
> > +v9fs_int32_read(req, &st->mtime);
> > +v9fs_int32_read(req, &st->atime);
> > +v9fs_int64_read(req, &st->length);
> > +v9fs_string_read(req, &st->name.size, &st->name.data);
> > +v9fs_string_read(req, &st->uid.size, &st->uid.data);
> > +v9fs_string_read(req, &st->gid.size, &st->gid.data);
> > +v9fs_string_read(req, &st->muid.size, &st->muid.data);
> > +
> > +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)
> > @@ -1009,6 +1058,8 @@ static void fs_walk_none(void *obj, void *data,
> > QGuestAllocator *t_alloc) v9fs_qid root_qid;
> > g_autofree v9fs_qid *wqid = NULL;
> > P9Req *req;
> > +struct V9fsStat st[2];
> > +int i;
> >
> > do_version(v9p);
> > req = v9fs_tattach(v9p, 0, getuid(), 0);
> > @@ -1021,6 +1072,25 @@ static void fs_walk_none(void *obj, void *data,
> > QGuestAllocator *t_alloc)
> >
> > /* special case: no QID is returned if nwname=0 was sent */
> > g_assert(wqid == NULL);
> > +
> > +req = v9fs_tstat(v9p, 0, 0);
> > +v9fs_req_wait_for_reply(req, NULL);
> > +v9fs_rstat(req, &st[0]);
>
> Probably stat-ing the root fid (0) should happen before sending Twalk, to
> better counter the 1st fid (0) having become potentially mutated?
>
You already have the root qid from Rattach, no need to stat.
> > +
> > +req = v9fs_tstat(v9p, 1, 0);
> > +v9fs_req_wait_for_reply(req, NULL);
> > +v9fs_rstat(req, &st[1]);
> > +
> > +/* don't compare QID version for checking for file ID equalness */
> > +g_assert(st[0].qid.type == st[1].qid.type);
> > +g_assert(st[0].qid.path == st[1].qid.path);
>
> I could add a helper function is_same_qid() for this if desired.
>
Rgetattr provides a qid[13] like Rattach. Since we control everything,
the version bits won't change
Re: [PATCH 3/6] tests/9pfs: compare QIDs in fs_walk_none() test
On Mittwoch, 9. März 2022 15:49:04 CET Christian Schoenebeck wrote:
> Extend previously added fs_walk_none() test by comparing the QID
> of the root fid with the QID of the cloned fid. They should be
> equal.
>
> Signed-off-by: Christian Schoenebeck
> ---
> tests/qtest/virtio-9p-test.c | 70
> 1 file changed, 70 insertions(+)
>
> diff --git a/tests/qtest/virtio-9p-test.c b/tests/qtest/virtio-9p-test.c
> index 6c00da03f4..9098e21173 100644
> --- a/tests/qtest/virtio-9p-test.c
> +++ b/tests/qtest/virtio-9p-test.c
> @@ -146,6 +146,11 @@ static void v9fs_uint16_read(P9Req *req, uint16_t *val)
> le16_to_cpus(val);
> }
>
> +static void v9fs_int16_read(P9Req *req, int16_t *val)
> +{
> +v9fs_uint16_read(req, (uint16_t *)val);
> +}
> +
> static void v9fs_uint32_write(P9Req *req, uint32_t val)
> {
> uint32_t le_val = cpu_to_le32(val);
> @@ -166,12 +171,22 @@ static void v9fs_uint32_read(P9Req *req, uint32_t
> *val) le32_to_cpus(val);
> }
>
> +static void v9fs_int32_read(P9Req *req, int32_t *val)
> +{
> +v9fs_uint32_read(req, (uint32_t *)val);
> +}
> +
> static void v9fs_uint64_read(P9Req *req, uint64_t *val)
> {
> v9fs_memread(req, val, 8);
> le64_to_cpus(val);
> }
>
> +static void v9fs_int64_read(P9Req *req, int64_t *val)
> +{
> +v9fs_uint64_read(req, (uint64_t *)val);
> +}
> +
> /* len[2] string[len] */
> static uint16_t v9fs_string_size(const char *string)
> {
> @@ -425,6 +440,40 @@ static void v9fs_rwalk(P9Req *req, uint16_t *nwqid,
> v9fs_qid **wqid) v9fs_req_free(req);
> }
>
> +/* size[4] Tstat tag[2] fid[4] */
> +static P9Req *v9fs_tstat(QVirtio9P *v9p, uint32_t fid, uint16_t tag)
> +{
> +P9Req *req;
> +
> +req = v9fs_req_init(v9p, 4, P9_TSTAT, tag);
> +v9fs_uint32_write(req, fid);
> +v9fs_req_send(req);
> +return req;
> +}
> +
> +/* size[4] Rstat tag[2] stat[n] */
> +static void v9fs_rstat(P9Req *req, struct V9fsStat *st)
> +{
> +v9fs_req_recv(req, P9_RSTAT);
> +
> +v9fs_int16_read(req, &st->size);
> +v9fs_int16_read(req, &st->type);
> +v9fs_int32_read(req, &st->dev);
> +v9fs_uint8_read(req, &st->qid.type);
> +v9fs_uint32_read(req, &st->qid.version);
> +v9fs_uint64_read(req, &st->qid.path);
> +v9fs_int32_read(req, &st->mode);
> +v9fs_int32_read(req, &st->mtime);
> +v9fs_int32_read(req, &st->atime);
> +v9fs_int64_read(req, &st->length);
> +v9fs_string_read(req, &st->name.size, &st->name.data);
> +v9fs_string_read(req, &st->uid.size, &st->uid.data);
> +v9fs_string_read(req, &st->gid.size, &st->gid.data);
> +v9fs_string_read(req, &st->muid.size, &st->muid.data);
> +
> +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)
> @@ -1009,6 +1058,8 @@ static void fs_walk_none(void *obj, void *data,
> QGuestAllocator *t_alloc) v9fs_qid root_qid;
> g_autofree v9fs_qid *wqid = NULL;
> P9Req *req;
> +struct V9fsStat st[2];
> +int i;
>
> do_version(v9p);
> req = v9fs_tattach(v9p, 0, getuid(), 0);
> @@ -1021,6 +1072,25 @@ static void fs_walk_none(void *obj, void *data,
> QGuestAllocator *t_alloc)
>
> /* special case: no QID is returned if nwname=0 was sent */
> g_assert(wqid == NULL);
> +
> +req = v9fs_tstat(v9p, 0, 0);
> +v9fs_req_wait_for_reply(req, NULL);
> +v9fs_rstat(req, &st[0]);
Probably stat-ing the root fid (0) should happen before sending Twalk, to
better counter the 1st fid (0) having become potentially mutated?
> +
> +req = v9fs_tstat(v9p, 1, 0);
> +v9fs_req_wait_for_reply(req, NULL);
> +v9fs_rstat(req, &st[1]);
> +
> +/* don't compare QID version for checking for file ID equalness */
> +g_assert(st[0].qid.type == st[1].qid.type);
> +g_assert(st[0].qid.path == st[1].qid.path);
I could add a helper function is_same_qid() for this if desired.
> +
> +for (i = 0; i < 2; ++i) {
> +g_free(st[i].name.data);
> +g_free(st[i].uid.data);
> +g_free(st[i].gid.data);
> +g_free(st[i].muid.data);
> +}
I didn't find a more elegant way to do this cleanup.
> }
>
> static void fs_walk_dotdot(void *obj, void *data, QGuestAllocator *t_alloc)
