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Commit 7e44d3be authored by Chuck Lever's avatar Chuck Lever Committed by J. Bruce Fields
Browse files

NSM: Generate NSMPROC_MON's "priv" argument when nsm_handle is created 



Introduce a new data type, used by both the in-kernel NLM and NSM
implementations, that is used to manage the opaque "priv" argument
for the NSMPROC_MON and NLMPROC_SM_NOTIFY calls.

Construct the "priv" cookie when the nsm_handle is created.

The nsm_init_private() function may look a little strange, but it is
roughly equivalent to how the XDR encoder formed the "priv" argument.
It's going to go away soon.

Signed-off-by: default avatarChuck Lever <chuck.lever@oracle.com>
Signed-off-by: default avatarJ. Bruce Fields <bfields@citi.umich.edu>
parent 05f3a9af

fs/lockd/mon.c

+16 −0
Original line number Diff line number Diff line
@@ -201,6 +201,21 @@ void nsm_unmonitor(const struct nlm_host *host) 
	}

}



/*

 * Construct a unique cookie to match this nsm_handle to this monitored

 * host.  It is passed to the local rpc.statd via NSMPROC_MON, and

 * returned via NLMPROC_SM_NOTIFY, in the "priv" field of these

 * requests.

 *

 * Linux provides the raw IP address of the monitored host,

 * left in network byte order.

 */

static void nsm_init_private(struct nsm_handle *nsm)

{

	__be32 *p = (__be32 *)&nsm->sm_priv.data;

	*p = nsm_addr_in(nsm)->sin_addr.s_addr;

}



/**

 * nsm_find - Find or create a cached nsm_handle

 * @sap: pointer to socket address of handle to find
@@ -271,6 +286,7 @@ struct nsm_handle *nsm_find(const struct sockaddr *sap, const size_t salen, 
	nsm->sm_name = (char *) (nsm + 1);

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

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

	nsm_init_private(nsm);

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

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

	atomic_set(&nsm->sm_count, 1);

include/linux/lockd/lockd.h

+1 −0
Original line number Diff line number Diff line
@@ -85,6 +85,7 @@ struct nsm_handle { 
	size_t			sm_addrlen;

	unsigned int		sm_monitored : 1,

				sm_sticky : 1;	/* don't unmonitor */

	struct nsm_private	sm_priv;

	char			sm_addrbuf[NSM_ADDRBUF];

};

include/linux/lockd/sm_inter.h

+0 −1
Original line number Diff line number Diff line
@@ -10,7 +10,6 @@ 
#define LINUX_LOCKD_SM_INTER_H



#define SM_MAXSTRLEN	1024

#define SM_PRIV_SIZE	16



extern int	nsm_local_state;

include/linux/lockd/xdr.h

+6 −0
Original line number Diff line number Diff line
@@ -13,6 +13,12 @@ 
#include <linux/nfs.h>

#include <linux/sunrpc/xdr.h>



#define SM_PRIV_SIZE		16



struct nsm_private {

	unsigned char		data[SM_PRIV_SIZE];

};



struct svc_rqst;



#define NLM_MAXCOOKIELEN    	32