X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=fs%2Flockd%2Fsvc.c;h=f45cdce5c31f4de695a81221e14090a0e39d0adb;hb=refs%2Fheads%2Fvserver;hp=a945261fa0bae5eda0f2b6b28b5cbc7f0687ba02;hpb=16c70f8c1b54b61c3b951b6fb220df250fe09b32;p=linux-2.6.git diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c index a945261fa..f45cdce5c 100644 --- a/fs/lockd/svc.c +++ b/fs/lockd/svc.c @@ -31,7 +31,9 @@ #include #include #include +#include #include +#include #include #define NLMDBG_FACILITY NLMDBG_SVC @@ -46,6 +48,7 @@ EXPORT_SYMBOL(nlmsvc_ops); static DEFINE_MUTEX(nlmsvc_mutex); static unsigned int nlmsvc_users; static pid_t nlmsvc_pid; +static struct svc_serv *nlmsvc_serv; int nlmsvc_grace_period; unsigned long nlmsvc_timeout; @@ -59,6 +62,7 @@ static DECLARE_WAIT_QUEUE_HEAD(lockd_exit); static unsigned long nlm_grace_period; static unsigned long nlm_timeout = LOCKD_DFLT_TIMEO; static int nlm_udpport, nlm_tcpport; +int nsm_use_hostnames = 0; /* * Constants needed for the sysctl interface. @@ -96,7 +100,6 @@ static inline void clear_grace_period(void) static void lockd(struct svc_rqst *rqstp) { - struct svc_serv *serv = rqstp->rq_server; int err = 0; unsigned long grace_period_expire; @@ -112,6 +115,7 @@ lockd(struct svc_rqst *rqstp) * Let our maker know we're running. */ nlmsvc_pid = current->pid; + nlmsvc_serv = rqstp->rq_server; complete(&lockd_start_done); daemonize("lockd"); @@ -161,7 +165,7 @@ lockd(struct svc_rqst *rqstp) * Find a socket with data available and call its * recvfrom routine. */ - err = svc_recv(serv, rqstp, timeout); + err = svc_recv(rqstp, timeout); if (err == -EAGAIN || err == -EINTR) continue; if (err < 0) { @@ -174,7 +178,7 @@ lockd(struct svc_rqst *rqstp) dprintk("lockd: request from %08x\n", (unsigned)ntohl(rqstp->rq_addr.sin_addr.s_addr)); - svc_process(serv, rqstp); + svc_process(rqstp); } @@ -189,6 +193,7 @@ lockd(struct svc_rqst *rqstp) nlmsvc_invalidate_all(); nlm_shutdown_hosts(); nlmsvc_pid = 0; + nlmsvc_serv = NULL; } else printk(KERN_DEBUG "lockd: new process, skipping host shutdown\n"); @@ -205,54 +210,77 @@ lockd(struct svc_rqst *rqstp) module_put_and_exit(0); } + +static int find_socket(struct svc_serv *serv, int proto) +{ + struct svc_sock *svsk; + int found = 0; + list_for_each_entry(svsk, &serv->sv_permsocks, sk_list) + if (svsk->sk_sk->sk_protocol == proto) { + found = 1; + break; + } + return found; +} + +static int make_socks(struct svc_serv *serv, int proto) +{ + /* Make any sockets that are needed but not present. + * If nlm_udpport or nlm_tcpport were set as module + * options, make those sockets unconditionally + */ + static int warned; + int err = 0; + if (proto == IPPROTO_UDP || nlm_udpport) + if (!find_socket(serv, IPPROTO_UDP)) + err = svc_makesock(serv, IPPROTO_UDP, nlm_udpport); + if (err == 0 && (proto == IPPROTO_TCP || nlm_tcpport)) + if (!find_socket(serv, IPPROTO_TCP)) + err= svc_makesock(serv, IPPROTO_TCP, nlm_tcpport); + if (!err) + warned = 0; + else if (warned++ == 0) + printk(KERN_WARNING + "lockd_up: makesock failed, error=%d\n", err); + return err; +} + /* * Bring up the lockd process if it's not already up. */ int -lockd_up(void) +lockd_up(int proto) /* Maybe add a 'family' option when IPv6 is supported ?? */ { - static int warned; struct svc_serv * serv; int error = 0; mutex_lock(&nlmsvc_mutex); - /* - * Unconditionally increment the user count ... this is - * the number of clients who _want_ a lockd process. - */ - nlmsvc_users++; /* * Check whether we're already up and running. */ - if (nlmsvc_pid) + if (nlmsvc_pid) { + if (proto) + error = make_socks(nlmsvc_serv, proto); goto out; + } /* * Sanity check: if there's no pid, * we should be the first user ... */ - if (nlmsvc_users > 1) + if (nlmsvc_users) printk(KERN_WARNING "lockd_up: no pid, %d users??\n", nlmsvc_users); error = -ENOMEM; - serv = svc_create(&nlmsvc_program, LOCKD_BUFSIZE); + serv = svc_create(&nlmsvc_program, LOCKD_BUFSIZE, NULL); if (!serv) { printk(KERN_WARNING "lockd_up: create service failed\n"); goto out; } - if ((error = svc_makesock(serv, IPPROTO_UDP, nlm_udpport)) < 0 -#ifdef CONFIG_NFSD_TCP - || (error = svc_makesock(serv, IPPROTO_TCP, nlm_tcpport)) < 0 -#endif - ) { - if (warned++ == 0) - printk(KERN_WARNING - "lockd_up: makesock failed, error=%d\n", error); + if ((error = make_socks(serv, proto)) < 0) goto destroy_and_out; - } - warned = 0; /* * Create the kernel thread and wait for it to start. @@ -272,6 +300,8 @@ lockd_up(void) destroy_and_out: svc_destroy(serv); out: + if (!error) + nlmsvc_users++; mutex_unlock(&nlmsvc_mutex); return error; } @@ -323,9 +353,6 @@ EXPORT_SYMBOL(lockd_down); * Sysctl parameters (same as module parameters, different interface). */ -/* Something that isn't CTL_ANY, CTL_NONE or a value that may clash. */ -#define CTL_UNNUMBERED -2 - static ctl_table nlm_sysctls[] = { { .ctl_name = CTL_UNNUMBERED, @@ -367,6 +394,22 @@ static ctl_table nlm_sysctls[] = { .extra1 = (int *) &nlm_port_min, .extra2 = (int *) &nlm_port_max, }, + { + .ctl_name = CTL_UNNUMBERED, + .procname = "nsm_use_hostnames", + .data = &nsm_use_hostnames, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec, + }, + { + .ctl_name = CTL_UNNUMBERED, + .procname = "nsm_local_state", + .data = &nsm_local_state, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec, + }, { .ctl_name = 0 } }; @@ -455,6 +498,7 @@ module_param_call(nlm_udpport, param_set_port, param_get_int, &nlm_udpport, 0644); module_param_call(nlm_tcpport, param_set_port, param_get_int, &nlm_tcpport, 0644); +module_param(nsm_use_hostnames, bool, 0644); /* * Initialising and terminating the module.