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[virtio-9p] Use preadv/pwritev instead of readv/writev
readv & writev, read & write respectively from the current offsetof the file & hence their use has to be preceeded by a call to lseek.preadv/writev can be used instead, as they take the offset as an argument....
virtio-9p: Use layered xattr approach
We would need this to make sure we handle the mappedsecurity model correctly for different xattr names.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com>
virtio-9p: Add SM_NONE security model
This is equivalent to SM_PASSTHROUGH security model.The only exception is, failure of privilige operation like chownare ignored. This makes a passthrough like security model usablefor people who runs kvm as non root...
virtio-9p: Add support for removing xattr
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
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 beused to get read the xattr value. If name is NULL the fid returned...
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...
qemu: virtio-9p: Implement statfs support in server
Implement statfs support in qemu server based on Sripathi'sinitial statfs patch.
Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com>Signed-off-by: Sripathi Kodi <sripathik@in.ibm.com>Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com>
virtio-9p: Do not reset atime
Current code resets file's atime to 0 when there is a change in mtime. This results in resetting the atime to "1970-01-01 05:30:00". For example, truncate -s 0 filename results in changing the mtime to the truncate time, but resets the atime to "1970-01-01 05:30:00". utime...
virtio-9p: Security model for mkdir
Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com>Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
virtio-9p: Security model for symlink and readlink
Mapped mode stores extended attributes in the user space of the extendedattributes. Given that the user space extended attributes are availableto regular files only, special files are created as regular files on the...
virtio-9p: Implement Security model for mknod
virtio-9p: Implement Security model for mksock using mknod.
This patch uses mknod to create socket.
On Host/Fileserver:rw------. 1 virfsuid virtfsgid 0 2010-05-11 09:57 asocket1
On Guest/Client:srwxr-xr-x 1 guestuser guestuser 0 2010-05-11 12:57 asocket1...
virtio-9p: Make infrastructure for the new security model.
This patch adds required infrastructure for the new security model.
- A new configure option for attr/xattr.- if CONFIG_VIRTFS will be defined if both CONFIG_LINUX and CONFIG_ATTR defined.- Defines routines related to both security models....
virtio-9p: Security model for chmod
virtio-9p: Security model for chown
mapped model changes the owner in the extended attributes.passthrough model does the change through lchown() as theserver don't need to follow the link and client will send theactual filesystem object.
Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com>...
virtio-9p: Security model for create/open2
In the mapped security model, VirtFS server intercepts and mapsthe file object create and get/set attribute requests. Files on the fileserverwill be created with VirtFS servers (QEMU) user credentials and theclient-users credentials are stored in extended attributes. On the request...
virtio-9p: Add P9_TOPEN support.
Implement P9_TOPEN support.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
virtio-9p: Add P9_TREAD support
Implement P9_TREAD support.
virtio-9p: Add P9_TWRITE support
Implement P9_TWRITE support.This gets write to file to work
virtio-9p: Add P9_TCREATE support
Implement P9_TCREATE support.[jvrao@linux.vnet.ibm.com: strdup to qemu_strdup conversion]
virtio-9p: Add P9_TWSTAT support
Implement P9_TWSTAT support.This gets file and directory creation to work.
[jvrao@linux.vnet.ibm.com: strdup to qemu_strdup conversion][aneesh.kumar@linux.vnet.ibm.com: v9fs_fix_path]
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>...
virtio-9p: Add P9_TREMOVE support.
Implement P9_TREMOVE support.This gets file deletion to work.
[mohan@in.ibm.com: Fix truncate to use the relative path]
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>...
virtio-9p: Add minimal set of FileOperations
Add minimal set of FileOperations and the corresponding implementations forlocal fstype. These will be required for the FID management patches later on.
[aneesh.kumar@linux.vnet.ibm.com: rpath fix ]Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>...
virtio-9p: Create a commandline option -fsdev
This patch creates a new command line option named -fsdev to hold any filesystem specific information.
The option will currently hold the following attributes:-fsdev fstype id=id,path=path_to_sharewherefstype: Type of the file system....