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hw/9pfs: Update v9fs_mknod 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 2011-05-18 16:06:51 -07:00
parent 00ace8c5c5
commit 1b733fed7f
1 changed files with 31 additions and 59 deletions
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90
hw/9pfs/virtio-9p.c
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@ -3019,77 +3019,49 @@ out:
return; return;
} }
static void v9fs_mknod_post_lstat(V9fsState *s, V9fsMkState *vs, int err)
{
if (err == -1) {
err = -errno;
goto out;
}
stat_to_qid(&vs->stbuf, &vs->qid);
vs->offset += pdu_marshal(vs->pdu, vs->offset, "Q", &vs->qid);
err = vs->offset;
out:
complete_pdu(s, vs->pdu, err);
v9fs_string_free(&vs->fullname);
v9fs_string_free(&vs->name);
qemu_free(vs);
}
static void v9fs_mknod_post_mknod(V9fsState *s, V9fsMkState *vs, int err)
{
if (err == -1) {
err = -errno;
goto out;
}
err = v9fs_do_lstat(s, &vs->fullname, &vs->stbuf);
v9fs_mknod_post_lstat(s, vs, err);
return;
out:
complete_pdu(s, vs->pdu, err);
v9fs_string_free(&vs->fullname);
v9fs_string_free(&vs->name);
qemu_free(vs);
}
static void v9fs_mknod(void *opaque) static void v9fs_mknod(void *opaque)
{ {
int mode;
gid_t gid;
int32_t fid;
V9fsQID qid;
int err = 0;
int major, minor;
size_t offset = 7;
V9fsString name;
struct stat stbuf;
V9fsString fullname;
V9fsFidState *fidp;
V9fsPDU *pdu = opaque; V9fsPDU *pdu = opaque;
V9fsState *s = pdu->s; V9fsState *s = pdu->s;
int32_t fid;
V9fsMkState *vs;
int err = 0;
V9fsFidState *fidp;
gid_t gid;
int mode;
int major, minor;
vs = qemu_malloc(sizeof(*vs)); v9fs_string_init(&fullname);
vs->pdu = pdu; pdu_unmarshal(pdu, offset, "dsdddd", &fid, &name, &mode,
vs->offset = 7; &major, &minor, &gid);
v9fs_string_init(&vs->fullname);
pdu_unmarshal(vs->pdu, vs->offset, "dsdddd", &fid, &vs->name, &mode,
&major, &minor, &gid);
fidp = lookup_fid(s, fid); fidp = lookup_fid(s, fid);
if (fidp == NULL) { if (fidp == NULL) {
err = -ENOENT; err = -ENOENT;
goto out; goto out;
} }
v9fs_string_sprintf(&fullname, "%s/%s", fidp->path.data, name.data);
v9fs_string_sprintf(&vs->fullname, "%s/%s", fidp->path.data, vs->name.data); err = v9fs_co_mknod(s, &fullname, fidp->uid, gid,
err = v9fs_do_mknod(s, vs->fullname.data, mode, makedev(major, minor), makedev(major, minor), mode);
fidp->uid, gid); if (err < 0) {
v9fs_mknod_post_mknod(s, vs, err); goto out;
return; }
err = v9fs_co_lstat(s, &fullname, &stbuf);
if (err < 0) {
goto out;
}
stat_to_qid(&stbuf, &qid);
err = offset;
err += pdu_marshal(pdu, offset, "Q", &qid);
out: out:
complete_pdu(s, vs->pdu, err); complete_pdu(s, pdu, err);
v9fs_string_free(&vs->fullname); v9fs_string_free(&fullname);
v9fs_string_free(&vs->name); v9fs_string_free(&name);
qemu_free(vs);
} }
/* /*