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virtio-9p: Add P9_TSTAT support 

Implement P9_TSTAT support. This get the mount to work on the guest.

[kiran@linux.vnet.ibm.com: malloc to qemu_malloc conversion]

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Anthony Liguori 2010-04-29 17:44:53 +05:30
parent 955efc4755
commit 4da7d3fa2d
1 changed files with 53 additions and 2 deletions
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55
hw/virtio-9p.c
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@ -895,11 +895,62 @@ out:
v9fs_string_free(&aname);
}
typedef struct V9fsStatState {
V9fsPDU *pdu;
size_t offset;
V9fsStat v9stat;
V9fsFidState *fidp;
struct stat stbuf;
} V9fsStatState;
static void v9fs_stat_post_lstat(V9fsState *s, V9fsStatState *vs, int err)
{
if (err == -1) {
err = -errno;
goto out;
}
err = stat_to_v9stat(s, &vs->fidp->path, &vs->stbuf, &vs->v9stat);
if (err) {
goto out;
}
vs->offset += pdu_marshal(vs->pdu, vs->offset, "wS", 0, &vs->v9stat);
err = vs->offset;
out:
complete_pdu(s, vs->pdu, err);
v9fs_stat_free(&vs->v9stat);
qemu_free(vs);
}
static void v9fs_stat(V9fsState *s, V9fsPDU *pdu)
{
if (debug_9p_pdu) {
pprint_pdu(pdu);
int32_t fid;
V9fsStatState *vs;
ssize_t err = 0;
vs = qemu_malloc(sizeof(*vs));
vs->pdu = pdu;
vs->offset = 7;
memset(&vs->v9stat, 0, sizeof(vs->v9stat));
pdu_unmarshal(vs->pdu, vs->offset, "d", &fid);
vs->fidp = lookup_fid(s, fid);
if (vs->fidp == NULL) {
err = -ENOENT;
goto out;
}
err = v9fs_do_lstat(s, &vs->fidp->path, &vs->stbuf);
v9fs_stat_post_lstat(s, vs, err);
return;
out:
complete_pdu(s, vs->pdu, err);
v9fs_stat_free(&vs->v9stat);
qemu_free(vs);
}
static void v9fs_walk(V9fsState *s, V9fsPDU *pdu)