diff options
Diffstat (limited to 'fs/lockd/svc.c')
| -rw-r--r-- | fs/lockd/svc.c | 78 |
1 files changed, 51 insertions, 27 deletions
diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c index 56b076736b5..64f1c31b585 100644 --- a/fs/lockd/svc.c +++ b/fs/lockd/svc.c @@ -35,7 +35,6 @@ #include <linux/sunrpc/svcsock.h> #include <net/ip.h> #include <linux/lockd/lockd.h> -#include <linux/lockd/sm_inter.h> #include <linux/nfs.h> #define NLMDBG_FACILITY NLMDBG_SVC @@ -45,7 +44,7 @@ static struct svc_program nlmsvc_program; struct nlmsvc_binding * nlmsvc_ops; -EXPORT_SYMBOL(nlmsvc_ops); +EXPORT_SYMBOL_GPL(nlmsvc_ops); static DEFINE_MUTEX(nlmsvc_mutex); static unsigned int nlmsvc_users; @@ -54,13 +53,26 @@ static struct svc_rqst *nlmsvc_rqst; unsigned long nlmsvc_timeout; /* + * If the kernel has IPv6 support available, always listen for + * both AF_INET and AF_INET6 requests. + */ +#if (defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)) && \ + defined(CONFIG_SUNRPC_REGISTER_V4) +static const sa_family_t nlmsvc_family = AF_INET6; +#else /* (CONFIG_IPV6 || CONFIG_IPV6_MODULE) && CONFIG_SUNRPC_REGISTER_V4 */ +static const sa_family_t nlmsvc_family = AF_INET; +#endif /* (CONFIG_IPV6 || CONFIG_IPV6_MODULE) && CONFIG_SUNRPC_REGISTER_V4 */ + +/* * These can be set at insmod time (useful for NFS as root filesystem), * and also changed through the sysctl interface. -- Jamie Lokier, Aug 2003 */ 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; + +/* RLIM_NOFILE defaults to 1024. That seems like a reasonable default here. */ +static unsigned int nlm_max_connections = 1024; /* * Constants needed for the sysctl interface. @@ -143,6 +155,9 @@ lockd(void *vrqstp) long timeout = MAX_SCHEDULE_TIMEOUT; RPC_IFDEBUG(char buf[RPC_MAX_ADDRBUFLEN]); + /* update sv_maxconn if it has changed */ + rqstp->rq_server->sv_maxconn = nlm_max_connections; + if (signalled()) { flush_signals(current); if (nlmsvc_ops) { @@ -189,6 +204,19 @@ lockd(void *vrqstp) return 0; } +static int create_lockd_listener(struct svc_serv *serv, char *name, + unsigned short port) +{ + struct svc_xprt *xprt; + + xprt = svc_find_xprt(serv, name, 0, 0); + if (xprt == NULL) + return svc_create_xprt(serv, name, port, SVC_SOCK_DEFAULTS); + + svc_xprt_put(xprt); + return 0; +} + /* * Ensure there are active UDP and TCP listeners for lockd. * @@ -202,29 +230,23 @@ lockd(void *vrqstp) static int make_socks(struct svc_serv *serv) { static int warned; - struct svc_xprt *xprt; - int err = 0; + int err; - xprt = svc_find_xprt(serv, "udp", 0, 0); - if (!xprt) - err = svc_create_xprt(serv, "udp", nlm_udpport, - SVC_SOCK_DEFAULTS); - else - svc_xprt_put(xprt); - if (err >= 0) { - xprt = svc_find_xprt(serv, "tcp", 0, 0); - if (!xprt) - err = svc_create_xprt(serv, "tcp", nlm_tcpport, - SVC_SOCK_DEFAULTS); - else - svc_xprt_put(xprt); - } - if (err >= 0) { - warned = 0; - err = 0; - } else if (warned++ == 0) + err = create_lockd_listener(serv, "udp", nlm_udpport); + if (err < 0) + goto out_err; + + err = create_lockd_listener(serv, "tcp", nlm_tcpport); + if (err < 0) + goto out_err; + + warned = 0; + return 0; + +out_err: + if (warned++ == 0) printk(KERN_WARNING - "lockd_up: makesock failed, error=%d\n", err); + "lockd_up: makesock failed, error=%d\n", err); return err; } @@ -252,7 +274,7 @@ int lockd_up(void) "lockd_up: no pid, %d users??\n", nlmsvc_users); error = -ENOMEM; - serv = svc_create(&nlmsvc_program, LOCKD_BUFSIZE, AF_INET, NULL); + serv = svc_create(&nlmsvc_program, LOCKD_BUFSIZE, nlmsvc_family, NULL); if (!serv) { printk(KERN_WARNING "lockd_up: create service failed\n"); goto out; @@ -276,6 +298,7 @@ int lockd_up(void) } svc_sock_update_bufs(serv); + serv->sv_maxconn = nlm_max_connections; nlmsvc_task = kthread_run(lockd, nlmsvc_rqst, serv->sv_name); if (IS_ERR(nlmsvc_task)) { @@ -300,7 +323,7 @@ out: mutex_unlock(&nlmsvc_mutex); return error; } -EXPORT_SYMBOL(lockd_up); +EXPORT_SYMBOL_GPL(lockd_up); /* * Decrement the user count and bring down lockd if we're the last. @@ -329,7 +352,7 @@ lockd_down(void) out: mutex_unlock(&nlmsvc_mutex); } -EXPORT_SYMBOL(lockd_down); +EXPORT_SYMBOL_GPL(lockd_down); #ifdef CONFIG_SYSCTL @@ -485,6 +508,7 @@ module_param_call(nlm_udpport, param_set_port, param_get_int, module_param_call(nlm_tcpport, param_set_port, param_get_int, &nlm_tcpport, 0644); module_param(nsm_use_hostnames, bool, 0644); +module_param(nlm_max_connections, uint, 0644); /* * Initialising and terminating the module. |