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hw/9pfs: Update v9fs_getlock 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 2011-05-07 17:21:38 +05:30
parent 0c27bf2a45
commit e4e414a427
2 changed files with 19 additions and 32 deletions
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42
hw/9pfs/virtio-9p.c
View File

@ -3049,42 +3049,38 @@ out:
* When a TGETLOCK request comes, always return success because all lock * When a TGETLOCK request comes, always return success because all lock
* handling is done by client's VFS layer. * handling is done by client's VFS layer.
*/ */
static void v9fs_getlock(void *opaque) static void v9fs_getlock(void *opaque)
{ {
size_t offset = 7;
struct stat stbuf;
V9fsFidState *fidp;
V9fsGetlock *glock;
int32_t fid, err = 0;
V9fsPDU *pdu = opaque; V9fsPDU *pdu = opaque;
V9fsState *s = pdu->s; V9fsState *s = pdu->s;
int32_t fid, err = 0;
V9fsGetlockState *vs;
vs = g_malloc0(sizeof(*vs)); glock = g_malloc(sizeof(*glock));
vs->pdu = pdu; pdu_unmarshal(pdu, offset, "dbqqds", &fid, &glock->type,
vs->offset = 7; &glock->start, &glock->length, &glock->proc_id,
&glock->client_id);
vs->glock = g_malloc(sizeof(*vs->glock)); fidp = lookup_fid(s, fid);
pdu_unmarshal(vs->pdu, vs->offset, "dbqqds", &fid, &vs->glock->type, if (fidp == NULL) {
&vs->glock->start, &vs->glock->length, &vs->glock->proc_id,
&vs->glock->client_id);
vs->fidp = lookup_fid(s, fid);
if (vs->fidp == NULL) {
err = -ENOENT; err = -ENOENT;
goto out; goto out;
} }
err = v9fs_co_fstat(s, fidp->fs.fd, &stbuf);
err = v9fs_do_fstat(s, vs->fidp->fs.fd, &vs->stbuf);
if (err < 0) { if (err < 0) {
err = -errno;
goto out; goto out;
} }
vs->glock->type = F_UNLCK; glock->type = F_UNLCK;
vs->offset += pdu_marshal(vs->pdu, vs->offset, "bqqds", vs->glock->type, offset += pdu_marshal(pdu, offset, "bqqds", glock->type,
vs->glock->start, vs->glock->length, vs->glock->proc_id, glock->start, glock->length, glock->proc_id,
&vs->glock->client_id); &glock->client_id);
err = offset;
out: out:
complete_pdu(s, vs->pdu, err); complete_pdu(s, pdu, err);
g_free(vs->glock); g_free(glock);
g_free(vs);
} }
static void v9fs_mkdir(void *opaque) static void v9fs_mkdir(void *opaque)

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

@ -412,15 +412,6 @@ typedef struct V9fsGetlock
V9fsString client_id; V9fsString client_id;
} V9fsGetlock; } V9fsGetlock;
typedef struct V9fsGetlockState
{
V9fsPDU *pdu;
size_t offset;
struct stat stbuf;
V9fsFidState *fidp;
V9fsGetlock *glock;
} V9fsGetlockState;
size_t pdu_packunpack(void *addr, struct iovec *sg, int sg_count, size_t pdu_packunpack(void *addr, struct iovec *sg, int sg_count,
size_t offset, size_t size, int pack); size_t offset, size_t size, int pack);