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# Date Author Comment
82cc3ee8 10/20/2010 08:10 pm M. Mohan Kumar

[virto-9p] Implement TLOCK

Synopsis

size[4] TLock tag[2] fid[4] flock[n]
size[4] RLock tag[2] status[1]

Description

Tlock is used to acquire/release byte range posix locks on a file
identified by given fid. The reply contains status of the lock request...

8f354003 10/20/2010 08:10 pm M. Mohan Kumar

qemu-virtio9p: Implement TGETLOCK

Synopsis

size[4] TGetlock tag[2] fid[4] getlock[n]
size[4] RGetlock tag[2] getlock[n]

Description

TGetlock is used to test for the existence of byte range posix locks on
a file identified by given fid. The reply contains getlock structure. If...

b41e95d3 10/20/2010 08:10 pm Venkateswararao Jujjuri (JV)

[virtio-9p] Introduce server side TFSYNC/RFSYNC for dotl

SYNOPSIS
size4 Tfsync tag2 fid4

size[4] Rfsync tag[2]

DESCRIPTION

The Tfsync transaction transfers ("flushes") all modified in-core data of
file identified by fid to the disk device (or other permanent storage...

df0973a4 10/20/2010 08:10 pm M. Mohan Kumar

qemu-virtio-9p: Implement TREADLINK operation for 9p2000.L

Synopsis

size[4] TReadlink tag[2] fid[4]
size[4] RReadlink tag[2] target[s]

Description
Readlink is used to return the contents of the symoblic link
referred by fid. Contents of symboic link is returned as a...

8f4d1ca5 09/08/2010 08:28 pm Arun R Bharadwaj

[virtio-9p] This patch implements TLERROR/RLERROR on the qemu 9P server.

Signed-off-by: Arun R Bharadwaj <>
Signed-off-by: Venkateswararao Jujjuri <>

c7b4b0b3 09/08/2010 08:26 pm M. Mohan Kumar

rename - change name of file or directory

size4 Trename tag2 fid4 newdirfid4 name[s]
size4 Rrename tag2

Implement the 2000.L rename operation. A new function
v9fs_complete_rename is introduced that acts as a common entry point
for 2000.L rename operation and 2000.U rename opearation (via wstat)....

771e9d4c 09/08/2010 08:26 pm M. Mohan Kumar

[virtio-9p] qemu: virtio-9p: Implement LOPEN

Implement 9p2000.L version of open(LOPEN) interface in qemu 9p server.

For LOPEN, no need to convert the flags to and from 9p mode to VFS mode.

Synopsis:

size[4] Tlopen tag[2] fid[4] mode[4]
size[4] Rlopen tag[2] qid[13] iounit[4]...
d62dbb51 09/08/2010 08:26 pm Aneesh Kumar K.V

virtio-9p: Add fidtype so that we can do type specific operation

We want to add type specific operation during read/write

Signed-off-by: Aneesh Kumar K.V <>

fa32ef88 09/08/2010 08:26 pm Aneesh Kumar K.V

virtio-9p: Implement TXATTRWALK

TXATTRWALK: Descend a ATTR namespace

size[4] TXATTRWALK tag[2] fid[4] newfid[4] name[s]
size[4] RXATTRWALK tag[2] size[8]

txattrwalk gets a fid pointing to xattr. This fid can later be
used to get read the xattr value. If name is NULL the fid returned...

10b468bd 09/08/2010 08:26 pm Aneesh Kumar K.V

virtio-9p: Implement TXATTRCREATE

TXATTRCREATE: Prepare a fid for setting xattr value on a file system object.

size[4] TXATTRCREATE tag[2] fid[4] name[s] attr_size[8] flags[4]
size[4] RXATTRWALK tag[2]

txattrcreate gets a fid pointing to xattr. This fid can later be...

c79ce737 09/08/2010 08:26 pm Sripathi Kodi

virtio-9p: Implement server side of setattr for 9P2000.L protocol.

SYNOPSIS

size[4] Tsetattr tag[2] attr[n]
size[4] Rsetattr tag[2]
DESCRIPTION
The setattr command changes some of the file status information.
attr resembles the iattr structure used in Linux kernel. It...
b2c224be 09/08/2010 08:26 pm Venkateswararao Jujjuri (JV)

[virtio-9p] Implement TLINK for 9P2000.L

Create a Hardlink.

SYNOPSIS

size4 Tlink tag2 dfid4 oldfid4 newpath[s]

size4 Rlink tag2

DESCRIPTION

Create a link 'newpath' in directory pointed by dfid linking to oldfid path.

Signed-off-by: Venkateswararao Jujjuri <>

08c60fc9 09/08/2010 08:26 pm Venkateswararao Jujjuri (JV)

[virtio-9p] Define and implement TSYMLINK for 9P2000.L

This patch implements creating a symlink for TSYMLINK request
and responds with RSYMLINK. In the case of error, we return RERROR.

SYNOPSIS

size[4] Tsymlink tag[2] fid[4] name[s] symtgt[s] gid[4]...
c1568af5 09/08/2010 08:26 pm Venkateswararao Jujjuri (JV)

[virtio-9p] This patch implements TLCREATE for 9p2000.L protocol.

SYNOPSIS

size[4] Tlcreate tag[2] fid[4] name[s] flags[4] mode[4] gid[4]
size[4] Rlcreate tag[2] qid[13] iounit[4]

DESCRIPTION

The Tlreate request asks the file server to create a new regular file with the...

5268cecc 09/08/2010 08:26 pm M. Mohan Kumar

qemu: virtio-9p: Implement TMKNOD

Implement TMKNOD as part of 2000.L Work

Synopsis

size[4] Tmknod tag[2] fid[4] name[s] mode[4] major[4] minor[4] gid[4]
size[4] Rmknod tag[2] qid[13]

Description

mknod asks the file server to create a device node with given device...
b67592ea 09/08/2010 08:26 pm M. Mohan Kumar

qemu: virtio-9p: Implement TMKDIR

Synopsis

size[4] Tmkdir tag[2] fid[4] name[s] mode[4] gid[4]
size[4] Rmkdir tag[2] qid[13]

Description

mkdir asks the file server to create a directory with given name,
mode and gid. The qid for the new directory is returned with...
be940c87 09/08/2010 08:26 pm M. Mohan Kumar

qemu: virtio-9p: Implement statfs support in server

Implement statfs support in qemu server based on Sripathi's
initial statfs patch.

Signed-off-by: M. Mohan Kumar <>
Signed-off-by: Sripathi Kodi <>
Signed-off-by: Venkateswararao Jujjuri <>

c18e2f94 09/08/2010 08:26 pm Sripathi Kodi

[V4] virtio-9p: readdir implementation for 9p2000.L

This patch implements the server part of readdir() implementation for
9p2000.L

SYNOPSIS
size[4] Treaddir tag[2] fid[4] offset[8] count[4]
size[4] Rreaddir tag[2] count[4] data[count]
DESCRIPTION...
5e94c103 09/08/2010 08:26 pm M. Mohan Kumar

virtio-9p: Compute iounit based on host filesystem block size

Compute iounit based on the host filesystem block size and pass it to
client with open/create response. Also return iounit as statfs's f_bsize
for optimal block size transfers.

Signed-off-by: M. Mohan Kumar <>...

00ede4c2 09/08/2010 08:26 pm Sripathi Kodi

virtio-9p: getattr server implementation for 9P2000.L protocol.

SYNOPSIS
size[4] Tgetattr tag[2] fid[4] request_mask[8]
size[4] Rgetattr tag[2] lstat[n]
DESCRIPTION
The getattr transaction inquires about the file identified by fid....
84151514 09/08/2010 08:26 pm M. Mohan Kumar

qemu: virtio-9p: Recognize 9P2000.L protocol

Make 9P server recognize 9P2000.L protocol version

Signed-off-by: M. Mohan Kumar <>
Signed-off-by: Venkateswararao Jujjuri <>

fac4f111 06/22/2010 11:15 pm Venkateswararao Jujjuri (JV)

virtio-9p: Rearrange fileop structures

This patch rearranges the fileop structures by moving the structure definitions
from virtio-9p.c to virtio-9p.h file. No functional changes.

Signed-off-by: Venkateswararao Jujjuri <>
Signed-off-by: Anthony Liguori <>

9f107513 05/03/2010 08:17 pm Anthony Liguori

virtio-9p: Add a virtio 9p device to qemu

This patch doesn't implement the 9p protocol handling
code. It adds a simple device which dump the protocol data.

[: Little-Endian to host format conversion]
[: Multiple-mounts support]...