ipc: fix wrong comments

[safe/jmp/linux-2.6] / fs / nfs / callback.c

diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c
index b1f7dc4..a796be5 100644 (file)
--- a/fs/nfs/callback.c
+++ b/fs/nfs/callback.c
@@ -14,11 +14,13 @@
 #include <linux/sunrpc/svcsock.h>
 #include <linux/nfs_fs.h>
 #include <linux/mutex.h>
+#include <linux/freezer.h>
 
 #include <net/inet_sock.h>
 
 #include "nfs4_fs.h"
 #include "callback.h"
+#include "internal.h"
 
 #define NFSDBG_FACILITY NFSDBG_CALLBACK
 
@@ -57,7 +59,6 @@ module_param_call(callback_tcpport, param_set_port, param_get_int,
  */
 static void nfs_callback_svc(struct svc_rqst *rqstp)
 {
-       struct svc_serv *serv = rqstp->rq_server;
        int err;
 
        __module_get(THIS_MODULE);
@@ -67,10 +68,13 @@ static void nfs_callback_svc(struct svc_rqst *rqstp)
        daemonize("nfsv4-svc");
        /* Process request with signals blocked, but allow SIGKILL.  */
        allow_signal(SIGKILL);
+       set_freezable();
 
        complete(&nfs_callback_info.started);
 
        for(;;) {
+               char buf[RPC_MAX_ADDRBUFLEN];
+
                if (signalled()) {
                        if (nfs_callback_info.users == 0)
                                break;
@@ -79,7 +83,7 @@ static void nfs_callback_svc(struct svc_rqst *rqstp)
                /*
                 * Listen for a request on the socket
                 */
-               err = svc_recv(serv, rqstp, MAX_SCHEDULE_TIMEOUT);
+               err = svc_recv(rqstp, MAX_SCHEDULE_TIMEOUT);
                if (err == -EAGAIN || err == -EINTR)
                        continue;
                if (err < 0) {
@@ -88,9 +92,9 @@ static void nfs_callback_svc(struct svc_rqst *rqstp)
                                        __FUNCTION__, -err);
                        break;
                }
-               dprintk("%s: request from %u.%u.%u.%u\n", __FUNCTION__,
-                               NIPQUAD(rqstp->rq_addr.sin_addr.s_addr));
-               svc_process(serv, rqstp);
+               dprintk("%s: request from %s\n", __FUNCTION__,
+                               svc_print_addr(rqstp, buf, sizeof(buf)));
+               svc_process(rqstp);
        }
 
        svc_exit_thread(rqstp);
@@ -106,7 +110,6 @@ static void nfs_callback_svc(struct svc_rqst *rqstp)
 int nfs_callback_up(void)
 {
        struct svc_serv *serv;
-       struct svc_sock *svsk;
        int ret = 0;
 
        lock_kernel();
@@ -115,21 +118,18 @@ int nfs_callback_up(void)
                goto out;
        init_completion(&nfs_callback_info.started);
        init_completion(&nfs_callback_info.stopped);
-       serv = svc_create(&nfs4_callback_program, NFS4_CALLBACK_BUFSIZE);
+       serv = svc_create(&nfs4_callback_program, NFS4_CALLBACK_BUFSIZE, NULL);
        ret = -ENOMEM;
        if (!serv)
                goto out_err;
-       /* FIXME: We don't want to register this socket with the portmapper */
-       ret = svc_makesock(serv, IPPROTO_TCP, nfs_callback_set_tcpport);
-       if (ret < 0)
+
+       ret = svc_makesock(serv, IPPROTO_TCP, nfs_callback_set_tcpport,
+                                                       SVC_SOCK_ANONYMOUS);
+       if (ret <= 0)
                goto out_destroy;
-       if (!list_empty(&serv->sv_permsocks)) {
-               svsk = list_entry(serv->sv_permsocks.next,
-                               struct svc_sock, sk_list);
-               nfs_callback_tcpport = ntohs(inet_sk(svsk->sk_sk)->sport);
-               dprintk ("Callback port = 0x%x\n", nfs_callback_tcpport);
-       } else
-               BUG();
+       nfs_callback_tcpport = ret;
+       dprintk("Callback port = 0x%x\n", nfs_callback_tcpport);
+
        ret = svc_create_thread(nfs_callback_svc, serv);
        if (ret < 0)
                goto out_destroy;
@@ -140,6 +140,8 @@ out:
        unlock_kernel();
        return ret;
 out_destroy:
+       dprintk("Couldn't create callback socket or server thread; err = %d\n",
+               ret);
        svc_destroy(serv);
 out_err:
        nfs_callback_info.users--;
@@ -166,15 +168,19 @@ void nfs_callback_down(void)
 
 static int nfs_callback_authenticate(struct svc_rqst *rqstp)
 {
-       struct in_addr *addr = &rqstp->rq_addr.sin_addr;
-       struct nfs4_client *clp;
+       struct sockaddr_in *addr = svc_addr_in(rqstp);
+       struct nfs_client *clp;
+       char buf[RPC_MAX_ADDRBUFLEN];
 
        /* Don't talk to strangers */
-       clp = nfs4_find_client(addr);
+       clp = nfs_find_client(addr, 4);
        if (clp == NULL)
                return SVC_DROP;
-       dprintk("%s: %u.%u.%u.%u NFSv4 callback!\n", __FUNCTION__, NIPQUAD(addr));
-       nfs4_put_client(clp);
+
+       dprintk("%s: %s NFSv4 callback!\n", __FUNCTION__,
+                       svc_print_addr(rqstp, buf, sizeof(buf)));
+       nfs_put_client(clp);
+
        switch (rqstp->rq_authop->flavour) {
                case RPC_AUTH_NULL:
                        if (rqstp->rq_proc != CB_NULL)