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hw/9pfs: Update v9fs_lock to use coroutines 

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
This commit is contained in:
Aneesh Kumar K.V 2011-08-22 09:14:04 +05:30
parent 03feb1e172
commit 0c27bf2a45
2 changed files with 20 additions and 34 deletions
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44
hw/9pfs/virtio-9p.c
View File

@ -3006,47 +3006,43 @@ out:
* do any thing in * qemu 9p server side lock code path.
* So when a TLOCK request comes, always return success
*/
static void v9fs_lock(void *opaque)
{
int8_t status;
V9fsFlock *flock;
size_t offset = 7;
struct stat stbuf;
V9fsFidState *fidp;
int32_t fid, err = 0;
V9fsPDU *pdu = opaque;
V9fsState *s = pdu->s;
int32_t fid, err = 0;
V9fsLockState *vs;
vs = g_malloc0(sizeof(*vs));
vs->pdu = pdu;
vs->offset = 7;
vs->flock = g_malloc(sizeof(*vs->flock));
pdu_unmarshal(vs->pdu, vs->offset, "dbdqqds", &fid, &vs->flock->type,
&vs->flock->flags, &vs->flock->start, &vs->flock->length,
&vs->flock->proc_id, &vs->flock->client_id);
vs->status = P9_LOCK_ERROR;
flock = g_malloc(sizeof(*flock));
pdu_unmarshal(pdu, offset, "dbdqqds", &fid, &flock->type,
&flock->flags, &flock->start, &flock->length,
&flock->proc_id, &flock->client_id);
status = P9_LOCK_ERROR;
/* We support only block flag now (that too ignored currently) */
if (vs->flock->flags & ~P9_LOCK_FLAGS_BLOCK) {
if (flock->flags & ~P9_LOCK_FLAGS_BLOCK) {
err = -EINVAL;
goto out;
}
vs->fidp = lookup_fid(s, fid);
if (vs->fidp == NULL) {
fidp = lookup_fid(s, fid);
if (fidp == NULL) {
err = -ENOENT;
goto out;
}
err = v9fs_do_fstat(s, vs->fidp->fs.fd, &vs->stbuf);
err = v9fs_co_fstat(s, fidp->fs.fd, &stbuf);
if (err < 0) {
err = -errno;
goto out;
}
vs->status = P9_LOCK_SUCCESS;
status = P9_LOCK_SUCCESS;
out:
vs->offset += pdu_marshal(vs->pdu, vs->offset, "b", vs->status);
complete_pdu(s, vs->pdu, err);
g_free(vs->flock);
g_free(vs);
err = offset;
err += pdu_marshal(pdu, offset, "b", status);
complete_pdu(s, pdu, err);
g_free(flock);
}
/*

10
hw/9pfs/virtio-9p.h
View File

@ -403,16 +403,6 @@ typedef struct V9fsFlock
V9fsString client_id;
} V9fsFlock;
typedef struct V9fsLockState
{
V9fsPDU *pdu;
size_t offset;
int8_t status;
struct stat stbuf;
V9fsFidState *fidp;
V9fsFlock *flock;
} V9fsLockState;
typedef struct V9fsGetlock
{
uint8_t type;