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Commit 713404d6 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'for-2.6.29' of git://linux-nfs.org/~bfields/linux 

* 'for-2.6.29' of git://linux-nfs.org/~bfields/linux: (67 commits)
  nfsd: get rid of NFSD_VERSION
  nfsd: last_byte_offset
  nfsd: delete wrong file comment from nfsd/nfs4xdr.c
  nfsd: git rid of nfs4_cb_null_ops declaration
  nfsd: dprint each op status in nfsd4_proc_compound
  nfsd: add etoosmall to nfserrno
  NFSD: FIDs need to take precedence over UUIDs
  SUNRPC: The sunrpc server code should not be used by out-of-tree modules
  svc: Clean up deferred requests on transport destruction
  nfsd: fix double-locks of directory mutex
  svc: Move kfree of deferral record to common code
  CRED: Fix NFSD regression
  NLM: Clean up flow of control in make_socks() function
  NLM: Refactor make_socks() function
  nfsd: Ensure nfsv4 calls the underlying filesystem on LOCKT
  SUNRPC: Ensure the server closes sockets in a timely fashion
  NFSD: Add documenting comments for nfsctl interface
  NFSD: Replace open-coded integer with macro
  NFSD: Fix a handful of coding style issues in write_filehandle()
  NFSD: clean up failover sysctl function naming
  ...
parents d599edca db43910c

fs/lockd/clntproc.c

+2 −5
Original line number Diff line number Diff line
@@ -16,7 +16,6 @@ 
#include <linux/sunrpc/clnt.h>

#include <linux/sunrpc/svc.h>

#include <linux/lockd/lockd.h>

#include <linux/lockd/sm_inter.h>



#define NLMDBG_FACILITY		NLMDBG_CLIENT

#define NLMCLNT_GRACE_WAIT	(5*HZ)
@@ -518,11 +517,9 @@ nlmclnt_lock(struct nlm_rqst *req, struct file_lock *fl) 
	unsigned char fl_type;

	int status = -ENOLCK;



	if (nsm_monitor(host) < 0) {

		printk(KERN_NOTICE "lockd: failed to monitor %s\n",

					host->h_name);

	if (nsm_monitor(host) < 0)

		goto out;

	}



	fl->fl_flags |= FL_ACCESS;

	status = do_vfs_lock(fl);

	fl->fl_flags = fl_flags;

fs/lockd/host.c

+17 −153
Original line number Diff line number Diff line
@@ -15,7 +15,6 @@ 
#include <linux/sunrpc/clnt.h>

#include <linux/sunrpc/svc.h>

#include <linux/lockd/lockd.h>

#include <linux/lockd/sm_inter.h>

#include <linux/mutex.h>



#include <net/ipv6.h>
@@ -32,11 +31,6 @@ static int nrhosts; 
static DEFINE_MUTEX(nlm_host_mutex);



static void			nlm_gc_hosts(void);

static struct nsm_handle	*nsm_find(const struct sockaddr *sap,

						const size_t salen,

						const char *hostname,

						const size_t hostname_len,

						const int create);



struct nlm_lookup_host_info {

	const int		server;		/* search for server|client */
@@ -105,32 +99,6 @@ static void nlm_clear_port(struct sockaddr *sap) 
	}

}



static void nlm_display_address(const struct sockaddr *sap,

				char *buf, const size_t len)

{

	const struct sockaddr_in *sin = (struct sockaddr_in *)sap;

	const struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sap;



	switch (sap->sa_family) {

	case AF_UNSPEC:

		snprintf(buf, len, "unspecified");

		break;

	case AF_INET:

		snprintf(buf, len, "%pI4", &sin->sin_addr.s_addr);

		break;

	case AF_INET6:

		if (ipv6_addr_v4mapped(&sin6->sin6_addr))

			snprintf(buf, len, "%pI4",

				 &sin6->sin6_addr.s6_addr32[3]);

		else

			snprintf(buf, len, "%pI6", &sin6->sin6_addr);

		break;

	default:

		snprintf(buf, len, "unsupported address family");

		break;

	}

}



/*

 * Common host lookup routine for server & client

 */
@@ -190,8 +158,8 @@ static struct nlm_host *nlm_lookup_host(struct nlm_lookup_host_info *ni) 
		atomic_inc(&nsm->sm_count);

	else {

		host = NULL;

		nsm = nsm_find(ni->sap, ni->salen,

				ni->hostname, ni->hostname_len, 1);

		nsm = nsm_get_handle(ni->sap, ni->salen,

					ni->hostname, ni->hostname_len);

		if (!nsm) {

			dprintk("lockd: nlm_lookup_host failed; "

				"no nsm handle\n");
@@ -206,6 +174,7 @@ static struct nlm_host *nlm_lookup_host(struct nlm_lookup_host_info *ni) 
		goto out;

	}

	host->h_name	   = nsm->sm_name;

	host->h_addrbuf    = nsm->sm_addrbuf;

	memcpy(nlm_addr(host), ni->sap, ni->salen);

	host->h_addrlen = ni->salen;

	nlm_clear_port(nlm_addr(host));
@@ -232,11 +201,6 @@ static struct nlm_host *nlm_lookup_host(struct nlm_lookup_host_info *ni) 


	nrhosts++;



	nlm_display_address((struct sockaddr *)&host->h_addr,

				host->h_addrbuf, sizeof(host->h_addrbuf));

	nlm_display_address((struct sockaddr *)&host->h_srcaddr,

				host->h_srcaddrbuf, sizeof(host->h_srcaddrbuf));



	dprintk("lockd: nlm_lookup_host created host %s\n",

			host->h_name);
@@ -256,10 +220,8 @@ nlm_destroy_host(struct nlm_host *host) 
	BUG_ON(!list_empty(&host->h_lockowners));

	BUG_ON(atomic_read(&host->h_count));



	/*

	 * Release NSM handle and unmonitor host.

	 */

	nsm_unmonitor(host);

	nsm_release(host->h_nsmhandle);



	clnt = host->h_rpcclnt;

	if (clnt != NULL)
@@ -378,8 +340,8 @@ nlm_bind_host(struct nlm_host *host) 
{

	struct rpc_clnt	*clnt;



	dprintk("lockd: nlm_bind_host %s (%s), my addr=%s\n",

			host->h_name, host->h_addrbuf, host->h_srcaddrbuf);

	dprintk("lockd: nlm_bind_host %s (%s)\n",

			host->h_name, host->h_addrbuf);



	/* Lock host handle */

	mutex_lock(&host->h_mutex);
@@ -481,35 +443,23 @@ void nlm_release_host(struct nlm_host *host) 
	}

}



/*

 * We were notified that the host indicated by address &sin

 * has rebooted.

 * Release all resources held by that peer.

/**

 * nlm_host_rebooted - Release all resources held by rebooted host

 * @info: pointer to decoded results of NLM_SM_NOTIFY call

 *

 * We were notified that the specified host has rebooted.  Release

 * all resources held by that peer.

 */

void nlm_host_rebooted(const struct sockaddr_in *sin,

				const char *hostname,

				unsigned int hostname_len,

				u32 new_state)

void nlm_host_rebooted(const struct nlm_reboot *info)

{

	struct hlist_head *chain;

	struct hlist_node *pos;

	struct nsm_handle *nsm;

	struct nlm_host	*host;



	nsm = nsm_find((struct sockaddr *)sin, sizeof(*sin),

			hostname, hostname_len, 0);

	if (nsm == NULL) {

		dprintk("lockd: never saw rebooted peer '%.*s' before\n",

				hostname_len, hostname);

	nsm = nsm_reboot_lookup(info);

	if (unlikely(nsm == NULL))

		return;

	}



	dprintk("lockd: nlm_host_rebooted(%.*s, %s)\n",

			hostname_len, hostname, nsm->sm_addrbuf);



	/* When reclaiming locks on this peer, make sure that

	 * we set up a new notification */

	nsm->sm_monitored = 0;



	/* Mark all hosts tied to this NSM state as having rebooted.

	 * We run the loop repeatedly, because we drop the host table
@@ -520,8 +470,8 @@ again: mutex_lock(&nlm_host_mutex); 
	for (chain = nlm_hosts; chain < nlm_hosts + NLM_HOST_NRHASH; ++chain) {

		hlist_for_each_entry(host, pos, chain, h_hash) {

			if (host->h_nsmhandle == nsm

			 && host->h_nsmstate != new_state) {

				host->h_nsmstate = new_state;

			 && host->h_nsmstate != info->state) {

				host->h_nsmstate = info->state;

				host->h_state++;



				nlm_get_host(host);
@@ -629,89 +579,3 @@ nlm_gc_hosts(void) 


	next_gc = jiffies + NLM_HOST_COLLECT;

}
 




/*

 * Manage NSM handles

 */

static LIST_HEAD(nsm_handles);

static DEFINE_SPINLOCK(nsm_lock);



static struct nsm_handle *nsm_find(const struct sockaddr *sap,

				   const size_t salen,

				   const char *hostname,

				   const size_t hostname_len,

				   const int create)

{

	struct nsm_handle *nsm = NULL;

	struct nsm_handle *pos;



	if (!sap)

		return NULL;



	if (hostname && memchr(hostname, '/', hostname_len) != NULL) {

		if (printk_ratelimit()) {

			printk(KERN_WARNING "Invalid hostname \"%.*s\" "

					    "in NFS lock request\n",

				(int)hostname_len, hostname);

		}

		return NULL;

	}



retry:

	spin_lock(&nsm_lock);

	list_for_each_entry(pos, &nsm_handles, sm_link) {



		if (hostname && nsm_use_hostnames) {

			if (strlen(pos->sm_name) != hostname_len

			 || memcmp(pos->sm_name, hostname, hostname_len))

				continue;

		} else if (!nlm_cmp_addr(nsm_addr(pos), sap))

			continue;

		atomic_inc(&pos->sm_count);

		kfree(nsm);

		nsm = pos;

		goto found;

	}

	if (nsm) {

		list_add(&nsm->sm_link, &nsm_handles);

		goto found;

	}

	spin_unlock(&nsm_lock);



	if (!create)

		return NULL;



	nsm = kzalloc(sizeof(*nsm) + hostname_len + 1, GFP_KERNEL);

	if (nsm == NULL)

		return NULL;



	memcpy(nsm_addr(nsm), sap, salen);

	nsm->sm_addrlen = salen;

	nsm->sm_name = (char *) (nsm + 1);

	memcpy(nsm->sm_name, hostname, hostname_len);

	nsm->sm_name[hostname_len] = '\0';

	nlm_display_address((struct sockaddr *)&nsm->sm_addr,

				nsm->sm_addrbuf, sizeof(nsm->sm_addrbuf));

	atomic_set(&nsm->sm_count, 1);

	goto retry;



found:

	spin_unlock(&nsm_lock);

	return nsm;

}



/*

 * Release an NSM handle

 */

void

nsm_release(struct nsm_handle *nsm)

{

	if (!nsm)

		return;

	if (atomic_dec_and_lock(&nsm->sm_count, &nsm_lock)) {

		list_del(&nsm->sm_link);

		spin_unlock(&nsm_lock);

		kfree(nsm);

	}

}

fs/lockd/mon.c

+424 −145

File changed.

Preview size limit exceeded, changes collapsed.

fs/lockd/svc.c

+48 −24
Original line number Diff line number Diff line
@@ -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
@@ -53,6 +52,17 @@ static struct task_struct *nlmsvc_task; 
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
@@ -60,7 +70,9 @@ unsigned long nlmsvc_timeout; 
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.

 *
@@ -202,27 +230,21 @@ lockd(void *vrqstp) 
static int make_socks(struct svc_serv *serv)

{

	static int warned;

	struct svc_xprt *xprt;

	int err = 0;

	int err;



	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;



	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)

	return 0;



out_err:

	if (warned++ == 0)

		printk(KERN_WARNING

			"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)) {
@@ -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.

fs/lockd/svc4proc.c

+1 −12
Original line number Diff line number Diff line
@@ -16,8 +16,6 @@ 
#include <linux/nfsd/nfsd.h>

#include <linux/lockd/lockd.h>

#include <linux/lockd/share.h>

#include <linux/lockd/sm_inter.h>





#define NLMDBG_FACILITY		NLMDBG_CLIENT
@@ -419,8 +417,6 @@ static __be32 
nlm4svc_proc_sm_notify(struct svc_rqst *rqstp, struct nlm_reboot *argp,

					      void	        *resp)

{

	struct sockaddr_in	saddr;



	dprintk("lockd: SM_NOTIFY     called\n");



	if (!nlm_privileged_requester(rqstp)) {
@@ -430,14 +426,7 @@ nlm4svc_proc_sm_notify(struct svc_rqst *rqstp, struct nlm_reboot *argp, 
		return rpc_system_err;

	}



	/* Obtain the host pointer for this NFS server and try to

	 * reclaim all locks we hold on this server.

	 */

	memset(&saddr, 0, sizeof(saddr));

	saddr.sin_family = AF_INET;

	saddr.sin_addr.s_addr = argp->addr;

	nlm_host_rebooted(&saddr, argp->mon, argp->len, argp->state);



	nlm_host_rebooted(argp);

	return rpc_success;

}