From patchwork Fri Apr 9 11:43:14 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [-V4,11/21] virtio-9p: Add P9_TSTAT support From: "Aneesh Kumar K.V" X-Patchwork-Id: 49836 Message-Id: <1270813404-23004-12-git-send-email-aneesh.kumar@linux.vnet.ibm.com> To: qemu-devel@nongnu.org Cc: ericvh@gmail.com, aliguori@us.ibm.com, aneesh.kumar@linux.vnet.ibm.com Date: Fri, 9 Apr 2010 17:13:14 +0530 From: Anthony Liguori 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 Signed-off-by: Aneesh Kumar K.V --- hw/virtio-9p.c | 55 +++++++++++++++++++++++++++++++++++++++++++++++++++++-- 1 files changed, 53 insertions(+), 2 deletions(-) diff --git a/hw/virtio-9p.c b/hw/virtio-9p.c index 4ab4f9a..342eb5e 100644 --- a/hw/virtio-9p.c +++ b/hw/virtio-9p.c @@ -897,11 +897,62 @@ 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)