From 6e84c7b66a0aa0be16a7728d1e687c57978dac2c Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Thu, 7 Jun 2007 15:31:36 -0400 Subject: [PATCH] SUNRPC: Add a downcall queue to struct rpc_inode Currently, the downcall queue is tied to the struct gss_auth, which means that different RPCSEC_GSS pseudoflavours must use different upcall pipes. Add a list to struct rpc_inode that can be used instead. Signed-off-by: Trond Myklebust --- include/linux/sunrpc/rpc_pipe_fs.h | 1 + net/sunrpc/auth_gss/auth_gss.c | 29 ++++++++++------------------- net/sunrpc/rpc_pipe.c | 1 + 3 files changed, 12 insertions(+), 19 deletions(-) diff --git a/include/linux/sunrpc/rpc_pipe_fs.h b/include/linux/sunrpc/rpc_pipe_fs.h index ad293760f6eb..430cea104817 100644 --- a/include/linux/sunrpc/rpc_pipe_fs.h +++ b/include/linux/sunrpc/rpc_pipe_fs.h @@ -23,6 +23,7 @@ struct rpc_inode { void *private; struct list_head pipe; struct list_head in_upcall; + struct list_head in_downcall; int pipelen; int nreaders; int nwriters; diff --git a/net/sunrpc/auth_gss/auth_gss.c b/net/sunrpc/auth_gss/auth_gss.c index e407a352440f..50809086fa1b 100644 --- a/net/sunrpc/auth_gss/auth_gss.c +++ b/net/sunrpc/auth_gss/auth_gss.c @@ -85,7 +85,6 @@ struct gss_auth { struct rpc_auth rpc_auth; struct gss_api_mech *mech; enum rpc_gss_svc service; - struct list_head upcalls; struct rpc_clnt *client; struct dentry *dentry; }; @@ -268,10 +267,10 @@ gss_release_msg(struct gss_upcall_msg *gss_msg) } static struct gss_upcall_msg * -__gss_find_upcall(struct gss_auth *gss_auth, uid_t uid) +__gss_find_upcall(struct rpc_inode *rpci, uid_t uid) { struct gss_upcall_msg *pos; - list_for_each_entry(pos, &gss_auth->upcalls, list) { + list_for_each_entry(pos, &rpci->in_downcall, list) { if (pos->uid != uid) continue; atomic_inc(&pos->count); @@ -290,13 +289,14 @@ static inline struct gss_upcall_msg * gss_add_msg(struct gss_auth *gss_auth, struct gss_upcall_msg *gss_msg) { struct inode *inode = gss_auth->dentry->d_inode; + struct rpc_inode *rpci = RPC_I(inode); struct gss_upcall_msg *old; spin_lock(&inode->i_lock); - old = __gss_find_upcall(gss_auth, gss_msg->uid); + old = __gss_find_upcall(rpci, gss_msg->uid); if (old == NULL) { atomic_inc(&gss_msg->count); - list_add(&gss_msg->list, &gss_auth->upcalls); + list_add(&gss_msg->list, &rpci->in_downcall); } else gss_msg = old; spin_unlock(&inode->i_lock); @@ -493,7 +493,6 @@ gss_pipe_downcall(struct file *filp, const char __user *src, size_t mlen) const void *p, *end; void *buf; struct rpc_clnt *clnt; - struct gss_auth *gss_auth; struct gss_upcall_msg *gss_msg; struct inode *inode = filp->f_path.dentry->d_inode; struct gss_cl_ctx *ctx; @@ -526,9 +525,8 @@ gss_pipe_downcall(struct file *filp, const char __user *src, size_t mlen) err = -ENOENT; /* Find a matching upcall */ - gss_auth = container_of(clnt->cl_auth, struct gss_auth, rpc_auth); spin_lock(&inode->i_lock); - gss_msg = __gss_find_upcall(gss_auth, uid); + gss_msg = __gss_find_upcall(RPC_I(inode), uid); if (gss_msg == NULL) { spin_unlock(&inode->i_lock); goto err_put_ctx; @@ -536,7 +534,7 @@ gss_pipe_downcall(struct file *filp, const char __user *src, size_t mlen) list_del_init(&gss_msg->list); spin_unlock(&inode->i_lock); - p = gss_fill_context(p, end, ctx, gss_auth->mech); + p = gss_fill_context(p, end, ctx, gss_msg->auth->mech); if (IS_ERR(p)) { err = PTR_ERR(p); gss_msg->msg.errno = (err == -EACCES) ? -EACCES : -EAGAIN; @@ -563,18 +561,12 @@ static void gss_pipe_release(struct inode *inode) { struct rpc_inode *rpci = RPC_I(inode); - struct rpc_clnt *clnt; - struct rpc_auth *auth; - struct gss_auth *gss_auth; + struct gss_upcall_msg *gss_msg; - clnt = rpci->private; - auth = clnt->cl_auth; - gss_auth = container_of(auth, struct gss_auth, rpc_auth); spin_lock(&inode->i_lock); - while (!list_empty(&gss_auth->upcalls)) { - struct gss_upcall_msg *gss_msg; + while (!list_empty(&rpci->in_downcall)) { - gss_msg = list_entry(gss_auth->upcalls.next, + gss_msg = list_entry(rpci->in_downcall.next, struct gss_upcall_msg, list); gss_msg->msg.errno = -EPIPE; atomic_inc(&gss_msg->count); @@ -637,7 +629,6 @@ gss_create(struct rpc_clnt *clnt, rpc_authflavor_t flavor) gss_auth->service = gss_pseudoflavor_to_service(gss_auth->mech, flavor); if (gss_auth->service == 0) goto err_put_mech; - INIT_LIST_HEAD(&gss_auth->upcalls); auth = &gss_auth->rpc_auth; auth->au_cslack = GSS_CRED_SLACK >> 2; auth->au_rslack = GSS_VERF_SLACK >> 2; diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c index 826190dacfce..2320f1e42da4 100644 --- a/net/sunrpc/rpc_pipe.c +++ b/net/sunrpc/rpc_pipe.c @@ -833,6 +833,7 @@ init_once(void * foo, struct kmem_cache * cachep, unsigned long flags) rpci->nreaders = 0; rpci->nwriters = 0; INIT_LIST_HEAD(&rpci->in_upcall); + INIT_LIST_HEAD(&rpci->in_downcall); INIT_LIST_HEAD(&rpci->pipe); rpci->pipelen = 0; init_waitqueue_head(&rpci->waitq); -- 2.20.1