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This pull request fixes a 2.9 regression and a long standing bug that can 

cause 9p clients to hang. Other patches are minor enhancements.
 -----BEGIN PGP SIGNATURE-----
 
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 soYAn0YYXJUAykyjNEMLdhhNp+rABzNk
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Merge remote-tracking branch 'remotes/gkurz/tags/for-upstream' into staging

This pull request fixes a 2.9 regression and a long standing bug that can
cause 9p clients to hang. Other patches are minor enhancements.

# gpg: Signature made Wed 25 Jan 2017 10:12:27 GMT
# gpg:                using DSA key 0x02FC3AEB0101DBC2
# gpg: Good signature from "Greg Kurz <groug@kaod.org>"
# gpg:                 aka "Greg Kurz <groug@free.fr>"
# gpg:                 aka "Greg Kurz <gkurz@fr.ibm.com>"
# gpg:                 aka "Greg Kurz <gkurz@linux.vnet.ibm.com>"
# gpg:                 aka "Gregory Kurz (Groug) <groug@free.fr>"
# gpg:                 aka "Gregory Kurz (Cimai Technology) <gkurz@cimai.com>"
# gpg:                 aka "Gregory Kurz (Meiosys Technology) <gkurz@meiosys.com>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 2BD4 3B44 535E C0A7 9894  DBA2 02FC 3AEB 0101 DBC2

* remotes/gkurz/tags/for-upstream:
  9pfs: fix offset error in v9fs_xattr_read()
  9pfs: local: trivial cosmetic fix in pwritev op
  9pfs: fix off-by-one error in PDU free list
  tests: virtio-9p: improve error reporting
  9pfs: add missing coroutine_fn annotations

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2017-01-25 17:54:14 +00:00
parent e32c41e4f6 fa0eb5c512
commit c7f1cf01b8
3 changed files with 26 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
hw/9pfs/9p-local.c
View File

@ -436,8 +436,7 @@ static ssize_t local_pwritev(FsContext *ctx, V9fsFidOpenState *fs,
const struct iovec *iov,
int iovcnt, off_t offset)
{
ssize_t ret
;
ssize_t ret;
#ifdef CONFIG_PREADV
ret = pwritev(fs->fd, iov, iovcnt, offset);
#else

12
hw/9pfs/9p.c
View File

@ -1582,7 +1582,7 @@ out_nofid:
v9fs_string_free(&name);
}
static void v9fs_fsync(void *opaque)
static void coroutine_fn v9fs_fsync(void *opaque)
{
int err;
int32_t fid;
@ -1666,7 +1666,7 @@ static void v9fs_init_qiov_from_pdu(QEMUIOVector *qiov, V9fsPDU *pdu,
if (is_write) {
pdu->s->transport->init_out_iov_from_pdu(pdu, &iov, &niov);
} else {
pdu->s->transport->init_in_iov_from_pdu(pdu, &iov, &niov, size);
pdu->s->transport->init_in_iov_from_pdu(pdu, &iov, &niov, size + skip);
}
qemu_iovec_init_external(&elem, iov, niov);
@ -1696,8 +1696,8 @@ static int v9fs_xattr_read(V9fsState *s, V9fsPDU *pdu, V9fsFidState *fidp,
}
offset += err;
v9fs_init_qiov_from_pdu(&qiov_full, pdu, 0, read_count, false);
err = v9fs_pack(qiov_full.iov, qiov_full.niov, offset,
v9fs_init_qiov_from_pdu(&qiov_full, pdu, offset, read_count, false);
err = v9fs_pack(qiov_full.iov, qiov_full.niov, 0,
((char *)fidp->fs.xattr.value) + off,
read_count);
qemu_iovec_destroy(&qiov_full);
@ -2348,7 +2348,7 @@ out_nofid:
v9fs_string_free(&symname);
}
static void v9fs_flush(void *opaque)
static void coroutine_fn v9fs_flush(void *opaque)
{
ssize_t err;
int16_t tag;
@ -3465,7 +3465,7 @@ int v9fs_device_realize_common(V9fsState *s, Error **errp)
/* initialize pdu allocator */
QLIST_INIT(&s->free_list);
QLIST_INIT(&s->active_list);
for (i = 0; i < (MAX_REQ - 1); i++) {
for (i = 0; i < MAX_REQ; i++) {
QLIST_INSERT_HEAD(&s->free_list, &s->pdus[i], next);
s->pdus[i].s = s;
s->pdus[i].idx = i;

24
tests/virtio-9p-test.c
View File

@ -236,6 +236,16 @@ static void v9fs_req_send(P9Req *req)
req->t_off = 0;
}
static const char *rmessage_name(uint8_t id)
{
return
id == P9_RLERROR ? "RLERROR" :
id == P9_RVERSION ? "RVERSION" :
id == P9_RATTACH ? "RATTACH" :
id == P9_RWALK ? "RWALK" :
"<unknown>";
}
static void v9fs_req_recv(P9Req *req, uint8_t id)
{
QVirtIO9P *v9p = req->v9p;
@ -258,11 +268,15 @@ static void v9fs_req_recv(P9Req *req, uint8_t id)
g_assert_cmpint(hdr.size, <=, P9_MAX_SIZE);
g_assert_cmpint(hdr.tag, ==, req->tag);
if (hdr.id != id && hdr.id == P9_RLERROR) {
uint32_t err;
v9fs_uint32_read(req, &err);
g_printerr("Received Rlerror (%d) instead of Response %d\n", err, id);
g_assert_not_reached();
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);
}