kernel.git/net/9p/client.c, branch linux-2.6.27.y

9p: implement proper trans module refcounting and unregistration

2008-09-24T21:22:23Z

9p trans modules aren't refcounted nor were they unregistered properly. Fix it. * Add 9p_trans_module->owner and reference the module on each trans instance creation and put it on destruction. * Protect v9fs_trans_list with a spinlock. This isn't strictly necessary as the list is manipulated only during module loading / unloading but it's a good idea to make the API safe. * Unregister trans modules when the corresponding module is being unloaded. * While at it, kill unnecessary EXPORT_SYMBOL on p9_trans_fd_init(). Signed-off-by: Tejun Heo Signed-off-by: Eric Van Hensbergen

9p: Correct fidpool creation failure in p9_client_create

2008-05-15T00:23:26Z

On error, p9_idpool_create returns an ERR_PTR-encoded errno. Signed-off-by: Josef 'Jeff' Sipek Acked-by: Eric Van Hensbergen

9p: propagate parse_option changes to client and transports

2008-05-15T00:23:26Z

Propagate changes that were made to the parse_options code to the other parse options pieces present in the other modules. Looks like the client parse options was probably corrupting the parse string and causing problems for others. Signed-off-by: Eric Van Hensbergen

9p: transport API reorganization

2008-02-07T01:25:03Z

This merges the mux.c (including the connection interface) with trans_fd in preparation for transport API changes. Ultimately, trans_fd will need to be rewritten to clean it up and simplify the implementation, but this reorganization is viewed as the first step. Signed-off-by: Eric Van Hensbergen

9p: block-based virtio client

2008-02-07T01:25:58Z

This replaces the console-based virto client with a block-based client using a single request queue. Signed-off-by: Eric Van Hensbergen

9p: create transport rpc cut-thru

2008-02-07T01:25:09Z

Add a new transport function which allows a cut-thru directly to the transport instead of processing request through the mux if the cut-thru exists. Signed-off-by: Eric Van Hensbergen

9p: fix bug in p9_clone_stat

2008-02-07T01:20:44Z

This patch fixes a bug in the copying of 9P stat information where string references weren't being updated properly. Signed-off-by: Martin Sava Signed-off-by: Eric Van Hensbergen

9p: fix bad kconfig cross-dependency

2007-10-17T19:31:07Z

This patch moves transport dynamic registration and matching to the net module to prevent a bad Kconfig dependency between the net and fs 9p modules. Signed-off-by: Eric Van Hensbergen

9p: attach-per-user

2007-10-17T19:31:07Z

The 9P2000 protocol requires the authentication and permission checks to be done in the file server. For that reason every user that accesses the file server tree has to authenticate and attach to the server separately. Multiple users can share the same connection to the server. Currently v9fs does a single attach and executes all I/O operations as a single user. This makes using v9fs in multiuser environment unsafe as it depends on the client doing the permission checking. This patch improves the 9P2000 support by allowing every user to attach separately. The patch defines three modes of access (new mount option 'access'): - attach-per-user (access=user) (default mode for 9P2000.u) If a user tries to access a file served by v9fs for the first time, v9fs sends an attach command to the server (Tattach) specifying the user. If the attach succeeds, the user can access the v9fs tree. As there is no uname->uid (string->integer) mapping yet, this mode works only with the 9P2000.u dialect. - allow only one user to access the tree (access=) Only the user with uid can access the v9fs tree. Other users that attempt to access it will get EPERM error. - do all operations as a single user (access=any) (default for 9P2000) V9fs does a single attach and all operations are done as a single user. If this mode is selected, the v9fs behavior is identical with the current one. Signed-off-by: Latchesar Ionkov Signed-off-by: Eric Van Hensbergen

9p: Make transports dynamic

2007-10-17T19:31:07Z

This patch abstracts out the interfaces to underlying transports so that new transports can be added as modules. This should also allow kernel configuration of transports without ifdef-hell. Signed-off-by: Eric Van Hensbergen