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Re: [Qemu-devel] [PATCH 12/22] 9pfs: use V9fsBlob to transmit xattr
From: |
Aneesh Kumar K.V |
Subject: |
Re: [Qemu-devel] [PATCH 12/22] 9pfs: use V9fsBlob to transmit xattr |
Date: |
Thu, 07 Jan 2016 22:19:47 +0530 |
User-agent: |
Notmuch/0.20.2 (http://notmuchmail.org) Emacs/24.5.1 (x86_64-pc-linux-gnu) |
Wei Liu <address@hidden> writes:
> And make v9fs_pack static function. Now we only need to export
> v9fs_{,un}marshal to device.
Any advantage of doing this ? compared to v9fs_pack ?. Trying to
understand if i am missing something here
>
> Signed-off-by: Wei Liu <address@hidden>
> ---
> fsdev/virtio-9p-marshal.c | 4 ++--
> fsdev/virtio-9p-marshal.h | 3 ---
> hw/9pfs/virtio-9p.c | 21 +++++++++++++--------
> 3 files changed, 15 insertions(+), 13 deletions(-)
>
> diff --git a/fsdev/virtio-9p-marshal.c b/fsdev/virtio-9p-marshal.c
> index c3ac316..d120bd2 100644
> --- a/fsdev/virtio-9p-marshal.c
> +++ b/fsdev/virtio-9p-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/virtio-9p-marshal.h b/fsdev/virtio-9p-marshal.h
> index 0709bcd..766a48e 100644
> --- a/fsdev/virtio-9p-marshal.h
> +++ b/fsdev/virtio-9p-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_unmarshal(struct iovec *out_sg, int out_num, size_t offset,
> int bswap, const char *fmt, ...);
> ssize_t v9fs_marshal(struct iovec *in_sg, int in_num, size_t offset,
> diff --git a/hw/9pfs/virtio-9p.c b/hw/9pfs/virtio-9p.c
> index 084fa6a..5da25ec 100644
> --- a/hw/9pfs/virtio-9p.c
> +++ b/hw/9pfs/virtio-9p.c
> @@ -1561,6 +1561,7 @@ 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;
> @@ -1572,14 +1573,18 @@ 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);
> + blob.size = read_count;
> +
> + err = pdu_marshal(pdu, offset, "dB", read_count, &blob);
> +
> + v9fs_blob_free(&blob);
> +
> if (err < 0) {
> return err;
> }
> --
> 2.1.4
- [Qemu-devel] [PATCH 16/22] 9pfs: make pdu_{, un}marshal proper functions, (continued)
- [Qemu-devel] [PATCH 16/22] 9pfs: make pdu_{, un}marshal proper functions, Wei Liu, 2016/01/05
- [Qemu-devel] [PATCH 20/22] 9pfs: break out generic code from virtio-9p.{c, h}, Wei Liu, 2016/01/05
- Re: [Qemu-devel] [PATCH 20/22] 9pfs: break out generic code from virtio-9p.{c, h}, Aneesh Kumar K.V, 2016/01/07
- Re: [Qemu-devel] [PATCH 20/22] 9pfs: break out generic code from virtio-9p.{c, h}, Wei Liu, 2016/01/07
- Re: [Qemu-devel] [PATCH 20/22] 9pfs: break out generic code from virtio-9p.{c, h}, Aneesh Kumar K.V, 2016/01/07
- Re: [Qemu-devel] [PATCH 20/22] 9pfs: break out generic code from virtio-9p.{c, h}, Greg Kurz, 2016/01/07
- Re: [Qemu-devel] [PATCH 20/22] 9pfs: break out generic code from virtio-9p.{c, h}, Wei Liu, 2016/01/07
- Re: [Qemu-devel] [PATCH 20/22] 9pfs: break out generic code from virtio-9p.{c, h}, Wei Liu, 2016/01/07
[Qemu-devel] [PATCH 17/22] 9pfs: factor out virtio_pdu_{, un}marshal, Wei Liu, 2016/01/05
[Qemu-devel] [PATCH 12/22] 9pfs: use V9fsBlob to transmit xattr, Wei Liu, 2016/01/05
- Re: [Qemu-devel] [PATCH 12/22] 9pfs: use V9fsBlob to transmit xattr,
Aneesh Kumar K.V <=
[Qemu-devel] [PATCH 13/22] fsdev: rename virtio-9p-marshal.{c, h} to 9p-iov-marshal.{c, h}, Wei Liu, 2016/01/05
[Qemu-devel] [PATCH 14/22] 9pfs: PDU processing functions don't need to take V9fsState as argument, Wei Liu, 2016/01/05
Re: [Qemu-devel] [PATCH 00/22] 9pfs: disentangling virtio and generic code, Stefano Stabellini, 2016/01/07
Re: [Qemu-devel] [PATCH 00/22] 9pfs: disentangling virtio and generic code, Aneesh Kumar K.V, 2016/01/07