Wei Liu <[email protected]> writes:
> And make v9fs_pack static function. Now we only need to export
> v9fs_{,un}marshal to device.
>
> Signed-off-by: Wei Liu <[email protected]>
> ---
> v3: fix bug discovered by Aneesh
> ---
> fsdev/9p-iov-marshal.c | 4 ++--
> fsdev/9p-iov-marshal.h | 3 ---
> hw/9pfs/9p.c | 21 +++++++++++++--------
> 3 files changed, 15 insertions(+), 13 deletions(-)
>
> diff --git a/fsdev/9p-iov-marshal.c b/fsdev/9p-iov-marshal.c
> index 1f9edf3..5c911c8 100644
> --- a/fsdev/9p-iov-marshal.c
> +++ b/fsdev/9p-iov-marshal.c
> @@ -70,8 +70,8 @@ static ssize_t v9fs_unpack(void *dst, struct iovec *out_sg,
> int out_num,
> return v9fs_packunpack(dst, out_sg, out_num, offset, size, 0);
> }
>
> -ssize_t v9fs_pack(struct iovec *in_sg, int in_num, size_t offset,
> - const void *src, size_t size)
> +static ssize_t v9fs_pack(struct iovec *in_sg, int in_num, size_t offset,
> + const void *src, size_t size)
> {
> return v9fs_packunpack((void *)src, in_sg, in_num, offset, size, 1);
> }
> diff --git a/fsdev/9p-iov-marshal.h b/fsdev/9p-iov-marshal.h
> index 6bccbfb..410a1ea 100644
> --- a/fsdev/9p-iov-marshal.h
> +++ b/fsdev/9p-iov-marshal.h
> @@ -3,9 +3,6 @@
>
> #include "9p-marshal.h"
>
> -
> -ssize_t v9fs_pack(struct iovec *in_sg, int in_num, size_t offset,
> - const void *src, size_t size);
> ssize_t v9fs_iov_unmarshal(struct iovec *out_sg, int out_num, size_t offset,
> int bswap, const char *fmt, ...);
> ssize_t v9fs_iov_marshal(struct iovec *in_sg, int in_num, size_t offset,
> diff --git a/hw/9pfs/9p.c b/hw/9pfs/9p.c
> index a904403..84cb1d9 100644
> --- a/hw/9pfs/9p.c
> +++ b/hw/9pfs/9p.c
> @@ -1585,6 +1585,7 @@ static int v9fs_xattr_read(V9fsState *s, V9fsPDU *pdu,
> V9fsFidState *fidp,
> size_t offset = 7;
> int read_count;
> int64_t xattr_len;
> + V9fsBlob blob;
>
> xattr_len = fidp->fs.xattr.len;
> read_count = xattr_len - off;
> @@ -1596,14 +1597,18 @@ static int v9fs_xattr_read(V9fsState *s, V9fsPDU
> *pdu, V9fsFidState *fidp,
> */
> read_count = 0;
> }
> - err = pdu_marshal(pdu, offset, "d", read_count);
> - if (err < 0) {
> - return err;
> - }
> - offset += err;
> - err = v9fs_pack(pdu->elem.in_sg, pdu->elem.in_num, offset,
> - ((char *)fidp->fs.xattr.value) + off,
> - read_count);
> +
> + v9fs_blob_init(&blob);
> +
> + blob.data = g_malloc(read_count);
> + memcpy(blob.data, ((char *)fidp->fs.xattr.value) + off,
> + read_count);
Can we do this without the malloc and memcpy ? . I am sure you need this
for Xen abstraction. But for now i am inclined to drop this from the
series and add this later with Xen transport. v9fs_xattr_read is
essentially T_READ on a xattr fid and we don't use blob ("B") in other
code path. We also want to avoid that extra malloc and memcpy.
> + blob.size = read_count;
> +
> + err = pdu_marshal(pdu, offset, "B", &blob);
> +
> + v9fs_blob_free(&blob);
> +
> if (err < 0) {
> return err;
> }
> --
> 2.1.4
-aneesh
