From ff9aa5e56df60cc8565a93cc868fe25ae3f20e49 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Tue, 22 Aug 2006 20:06:21 -0400 Subject: [PATCH] SUNRPC: Eliminate xprt_create_proto and rpc_create_client The two function call API for creating a new RPC client is now obsolete. Remove it. Also, remove an unnecessary check to see whether the caller is capable of using privileged network services. The kernel RPC client always uses a privileged ephemeral port by default; callers are responsible for checking the authority of users to make use of any RPC service, or for specifying that a nonprivileged port is acceptable. Test plan: Repeated runs of Connectathon locking suite. Check network trace to ensure correctness of NLM requests and replies. Signed-off-by: Chuck Lever Signed-off-by: Trond Myklebust --- include/linux/sunrpc/clnt.h | 7 ---- include/linux/sunrpc/xprt.h | 1 - net/sunrpc/clnt.c | 42 +------------------- net/sunrpc/sunrpc_syms.c | 3 -- net/sunrpc/xprt.c | 79 ------------------------------------- net/sunrpc/xprtsock.c | 2 - 6 files changed, 1 insertion(+), 133 deletions(-) diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h index 7817ba82f1..f6d1d646ce 100644 --- a/include/linux/sunrpc/clnt.h +++ b/include/linux/sunrpc/clnt.h @@ -91,13 +91,6 @@ struct rpc_procinfo { #ifdef __KERNEL__ -struct rpc_clnt *rpc_create_client(struct rpc_xprt *xprt, char *servname, - struct rpc_program *info, - u32 version, rpc_authflavor_t authflavor); -struct rpc_clnt *rpc_new_client(struct rpc_xprt *xprt, char *servname, - struct rpc_program *info, - u32 version, rpc_authflavor_t authflavor); - struct rpc_create_args { int protocol; struct sockaddr *address; diff --git a/include/linux/sunrpc/xprt.h b/include/linux/sunrpc/xprt.h index bc80fcfdd8..de4efea7c8 100644 --- a/include/linux/sunrpc/xprt.h +++ b/include/linux/sunrpc/xprt.h @@ -231,7 +231,6 @@ struct rpc_xprt { /* * Transport operations used by ULPs */ -struct rpc_xprt * xprt_create_proto(int proto, struct sockaddr_in *addr, struct rpc_timeout *to); void xprt_set_timeout(struct rpc_timeout *to, unsigned int retr, unsigned long incr); /* diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index dbb93bdf6c..428704dd5b 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -97,17 +97,7 @@ rpc_setup_pipedir(struct rpc_clnt *clnt, char *dir_name) } } -/* - * Create an RPC client - * FIXME: This should also take a flags argument (as in task->tk_flags). - * It's called (among others) from pmap_create_client, which may in - * turn be called by an async task. In this case, rpciod should not be - * made to sleep too long. - */ -struct rpc_clnt * -rpc_new_client(struct rpc_xprt *xprt, char *servname, - struct rpc_program *program, u32 vers, - rpc_authflavor_t flavor) +static struct rpc_clnt * rpc_new_client(struct rpc_xprt *xprt, char *servname, struct rpc_program *program, u32 vers, rpc_authflavor_t flavor) { struct rpc_version *version; struct rpc_clnt *clnt = NULL; @@ -253,36 +243,6 @@ struct rpc_clnt *rpc_create(struct rpc_create_args *args) } EXPORT_SYMBOL(rpc_create); -/** - * Create an RPC client - * @xprt - pointer to xprt struct - * @servname - name of server - * @info - rpc_program - * @version - rpc_program version - * @authflavor - rpc_auth flavour to use - * - * Creates an RPC client structure, then pings the server in order to - * determine if it is up, and if it supports this program and version. - * - * This function should never be called by asynchronous tasks such as - * the portmapper. - */ -struct rpc_clnt *rpc_create_client(struct rpc_xprt *xprt, char *servname, - struct rpc_program *info, u32 version, rpc_authflavor_t authflavor) -{ - struct rpc_clnt *clnt; - int err; - - clnt = rpc_new_client(xprt, servname, info, version, authflavor); - if (IS_ERR(clnt)) - return clnt; - err = rpc_ping(clnt, RPC_TASK_SOFT|RPC_TASK_NOINTR); - if (err == 0) - return clnt; - rpc_shutdown_client(clnt); - return ERR_PTR(err); -} - /* * This function clones the RPC client structure. It allows us to share the * same transport while varying parameters such as the authentication diff --git a/net/sunrpc/sunrpc_syms.c b/net/sunrpc/sunrpc_syms.c index f38f939ce9..26c0531d7e 100644 --- a/net/sunrpc/sunrpc_syms.c +++ b/net/sunrpc/sunrpc_syms.c @@ -36,8 +36,6 @@ EXPORT_SYMBOL(rpc_wake_up_status); EXPORT_SYMBOL(rpc_release_task); /* RPC client functions */ -EXPORT_SYMBOL(rpc_create_client); -EXPORT_SYMBOL(rpc_new_client); EXPORT_SYMBOL(rpc_clone_client); EXPORT_SYMBOL(rpc_bind_new_program); EXPORT_SYMBOL(rpc_destroy_client); @@ -57,7 +55,6 @@ EXPORT_SYMBOL(rpc_queue_upcall); EXPORT_SYMBOL(rpc_mkpipe); /* Client transport */ -EXPORT_SYMBOL(xprt_create_proto); EXPORT_SYMBOL(xprt_set_timeout); /* Client credential cache */ diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c index 17f56cfe24..e4f64fb58f 100644 --- a/net/sunrpc/xprt.c +++ b/net/sunrpc/xprt.c @@ -962,85 +962,6 @@ struct rpc_xprt *xprt_create_transport(int proto, struct sockaddr *ap, size_t si return xprt; } -static struct rpc_xprt *xprt_setup(int proto, struct sockaddr_in *ap, struct rpc_timeout *to) -{ - int result; - struct rpc_xprt *xprt; - struct rpc_rqst *req; - - if ((xprt = kzalloc(sizeof(struct rpc_xprt), GFP_KERNEL)) == NULL) - return ERR_PTR(-ENOMEM); - - memcpy(&xprt->addr, ap, sizeof(*ap)); - xprt->addrlen = sizeof(*ap); - - switch (proto) { - case IPPROTO_UDP: - result = xs_setup_udp(xprt, to); - break; - case IPPROTO_TCP: - result = xs_setup_tcp(xprt, to); - break; - default: - printk(KERN_ERR "RPC: unrecognized transport protocol: %d\n", - proto); - result = -EIO; - break; - } - if (result) { - kfree(xprt); - return ERR_PTR(result); - } - - spin_lock_init(&xprt->transport_lock); - spin_lock_init(&xprt->reserve_lock); - - INIT_LIST_HEAD(&xprt->free); - INIT_LIST_HEAD(&xprt->recv); - INIT_WORK(&xprt->task_cleanup, xprt_autoclose, xprt); - init_timer(&xprt->timer); - xprt->timer.function = xprt_init_autodisconnect; - xprt->timer.data = (unsigned long) xprt; - xprt->last_used = jiffies; - xprt->cwnd = RPC_INITCWND; - - rpc_init_wait_queue(&xprt->binding, "xprt_binding"); - rpc_init_wait_queue(&xprt->pending, "xprt_pending"); - rpc_init_wait_queue(&xprt->sending, "xprt_sending"); - rpc_init_wait_queue(&xprt->resend, "xprt_resend"); - rpc_init_priority_wait_queue(&xprt->backlog, "xprt_backlog"); - - /* initialize free list */ - for (req = &xprt->slot[xprt->max_reqs-1]; req >= &xprt->slot[0]; req--) - list_add(&req->rq_list, &xprt->free); - - xprt_init_xid(xprt); - - dprintk("RPC: created transport %p with %u slots\n", xprt, - xprt->max_reqs); - - return xprt; -} - -/** - * xprt_create_proto - create an RPC client transport - * @proto: requested transport protocol - * @sap: remote peer's address - * @to: timeout parameters for new transport - * - */ -struct rpc_xprt *xprt_create_proto(int proto, struct sockaddr_in *sap, struct rpc_timeout *to) -{ - struct rpc_xprt *xprt; - - xprt = xprt_setup(proto, sap, to); - if (IS_ERR(xprt)) - dprintk("RPC: xprt_create_proto failed\n"); - else - dprintk("RPC: xprt_create_proto created xprt %p\n", xprt); - return xprt; -} - /** * xprt_destroy - destroy an RPC transport, killing off all requests. * @xprt: transport to destroy diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c index 17179aa4c2..0b84fab68d 100644 --- a/net/sunrpc/xprtsock.c +++ b/net/sunrpc/xprtsock.c @@ -1376,7 +1376,6 @@ int xs_setup_udp(struct rpc_xprt *xprt, struct rpc_timeout *to) xprt->prot = IPPROTO_UDP; xprt->tsh_size = 0; - xprt->resvport = capable(CAP_NET_BIND_SERVICE) ? 1 : 0; /* XXX: header size can vary due to auth type, IPv6, etc. */ xprt->max_payload = (1U << 16) - (MAX_HEADER << 3); @@ -1423,7 +1422,6 @@ int xs_setup_tcp(struct rpc_xprt *xprt, struct rpc_timeout *to) xprt->prot = IPPROTO_TCP; xprt->tsh_size = sizeof(rpc_fraghdr) / sizeof(u32); - xprt->resvport = capable(CAP_NET_BIND_SERVICE) ? 1 : 0; xprt->max_payload = RPC_MAX_FRAGMENT_SIZE; INIT_WORK(&xprt->connect_worker, xs_tcp_connect_worker, xprt); -- 2.39.5