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[PATCH] RPC,NFS: new rpc_pipefs patch

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Currently rpc_mkdir/rpc_rmdir and rpc_mkpipe/mk_unlink have an API that's
 a little unfortunate.  They take a path relative to the rpc_pipefs root and
 thus need to perform a full lookup.  If you look at debugfs or usbfs they
 always store the dentry for directories they created and thus can pass in
 a dentry + single pathname component pair into their equivalents of the
 above functions.

 And in fact rpc_pipefs actually stores a dentry for all but one component so
 this change not only simplifies the core rpc_pipe code but also the callers.

 Unfortuntately this code path is only used by the NFS4 idmapper and
 AUTH_GSSAPI for which I don't have a test enviroment.  Could someone give
 it a spin?  It's the last bit needed before we can rework the
 lookup_hash API

 Signed-off-by: Christoph Hellwig <hch@lst.de>
 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Christoph Hellwig
2005-07-24 23:53:01 +01:00
committed by Trond Myklebust
parent 470056c288
commit 278c995c8a
6 changed files with 149 additions and 216 deletions
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9
net/sunrpc/auth_gss/auth_gss.c
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@@ -87,7 +87,6 @@ struct gss_auth {
struct list_head upcalls;
struct rpc_clnt *client;
struct dentry *dentry;
char path[48];
spinlock_t lock;
};
@@ -690,10 +689,8 @@ gss_create(struct rpc_clnt *clnt, rpc_authflavor_t flavor)
if (err)
goto err_put_mech;
snprintf(gss_auth->path, sizeof(gss_auth->path), "%s/%s",
clnt->cl_pathname,
gss_auth->mech->gm_name);
gss_auth->dentry = rpc_mkpipe(gss_auth->path, clnt, &gss_upcall_ops, RPC_PIPE_WAIT_FOR_OPEN);
gss_auth->dentry = rpc_mkpipe(clnt->cl_dentry, gss_auth->mech->gm_name,
clnt, &gss_upcall_ops, RPC_PIPE_WAIT_FOR_OPEN);
if (IS_ERR(gss_auth->dentry)) {
err = PTR_ERR(gss_auth->dentry);
goto err_put_mech;
@@ -718,7 +715,7 @@ gss_destroy(struct rpc_auth *auth)
auth, auth->au_flavor);
gss_auth = container_of(auth, struct gss_auth, rpc_auth);
rpc_unlink(gss_auth->path);
rpc_unlink(gss_auth->dentry);
gss_mech_put(gss_auth->mech);
rpcauth_free_credcache(auth);