From: Olaf Kirch <[email protected]>
Subject: When looking up a lockd host, pass hostname & length
This patch adds the peer's hostname (and name length) to
all calls to nlm*_lookup_host functions. A subsequent patch
will make use of these.
Signed-off-by: [email protected]
fs/lockd/clntproc.c | 4 +++-
fs/lockd/host.c | 37 +++++++++++++++++++++++++------------
fs/lockd/svc4proc.c | 4 ++--
fs/lockd/svclock.c | 3 ++-
fs/lockd/svcproc.c | 4 ++--
include/linux/lockd/lockd.h | 6 +++---
6 files changed, 37 insertions(+), 21 deletions(-)
Index: build/fs/lockd/clntproc.c
===================================================================
--- build.orig/fs/lockd/clntproc.c
+++ build/fs/lockd/clntproc.c
@@ -151,6 +151,7 @@ static void nlmclnt_release_lockargs(str
int
nlmclnt_proc(struct inode *inode, int cmd, struct file_lock *fl)
{
+ struct nfs_server *nfssrv = NFS_SERVER(inode);
struct nlm_host *host;
struct nlm_rqst *call;
sigset_t oldset;
@@ -166,7 +167,8 @@ nlmclnt_proc(struct inode *inode, int cm
/* Retrieve transport protocol from NFS client */
proto = NFS_CLIENT(inode)->cl_xprt->prot;
- host = nlmclnt_lookup_host(NFS_ADDR(inode), proto, vers);
+ host = nlmclnt_lookup_host(NFS_ADDR(inode), proto, vers,
+ nfssrv->hostname, strlen(nfssrv->hostname));
if (host == NULL)
return -ENOLCK;
Index: build/fs/lockd/host.c
===================================================================
--- build.orig/fs/lockd/host.c
+++ build/fs/lockd/host.c
@@ -39,19 +39,23 @@ static void nlm_gc_hosts(void);
* Find an NLM server handle in the cache. If there is none, create it.
*/
struct nlm_host *
-nlmclnt_lookup_host(const struct sockaddr_in *sin, int proto, int version)
+nlmclnt_lookup_host(const struct sockaddr_in *sin, int proto, int version,
+ const char *hostname, int hostname_len)
{
- return nlm_lookup_host(0, sin, proto, version);
+ return nlm_lookup_host(0, sin, proto, version,
+ hostname, hostname_len);
}
/*
* Find an NLM client handle in the cache. If there is none, create it.
*/
struct nlm_host *
-nlmsvc_lookup_host(struct svc_rqst *rqstp)
+nlmsvc_lookup_host(struct svc_rqst *rqstp,
+ const char *hostname, int hostname_len)
{
return nlm_lookup_host(1, &rqstp->rq_addr,
- rqstp->rq_prot, rqstp->rq_vers);
+ rqstp->rq_prot, rqstp->rq_vers,
+ hostname, hostname_len);
}
/*
@@ -59,14 +63,20 @@ nlmsvc_lookup_host(struct svc_rqst *rqst
*/
struct nlm_host *
nlm_lookup_host(int server, const struct sockaddr_in *sin,
- int proto, int version)
+ int proto, int version,
+ const char *hostname,
+ int hostname_len)
{
struct nlm_host *host, **hp;
u32 addr;
int hash;
- dprintk("lockd: nlm_lookup_host(%08x, p=%d, v=%d)\n",
- (unsigned)(sin? ntohl(sin->sin_addr.s_addr) : 0), proto, version);
+ dprintk("lockd: nlm_lookup_host(%u.%u.%u.%u, p=%d, v=%d, my role=%s, name=%.*s)\n",
+ NIPQUAD(sin->sin_addr.s_addr), proto, version,
+ server? "server" : "client",
+ hostname_len,
+ hostname? hostname : "<none>");
+
hash = NLM_ADDRHASH(sin->sin_addr.s_addr);
@@ -263,19 +273,22 @@ void nlm_release_host(struct nlm_host *h
void nlm_host_rebooted(const struct sockaddr_in *sin, const struct nlm_reboot *argp)
{
struct nlm_host *host;
+ int server;
/* Obtain the host pointer for this NFS server and try to
* reclaim all locks we hold on this server.
*/
- if ((argp->proto & 1)==0) {
+ server = (argp->proto & 1)? 1 : 0;
+ host = nlm_lookup_host(server, sin, argp->proto >> 1, argp->vers,
+ argp->mon, argp->len);
+ if (host == NULL)
+ return;
+
+ if (server == 0) {
/* We are client, he's the server: try to reclaim all locks. */
- if ((host = nlmclnt_lookup_host(sin, argp->proto >> 1, argp->vers)) == NULL)
- return;
nlmclnt_recovery(host, argp->state);
} else {
/* He's the client, we're the server: delete all locks held by the client */
- if ((host = nlm_lookup_host(1, sin, argp->proto >> 1, argp->vers)) == NULL)
- return;
nlmsvc_free_host_resources(host);
}
nlm_release_host(host);
Index: build/fs/lockd/svc4proc.c
===================================================================
--- build.orig/fs/lockd/svc4proc.c
+++ build/fs/lockd/svc4proc.c
@@ -38,7 +38,7 @@ nlm4svc_retrieve_args(struct svc_rqst *r
return nlm_lck_denied_nolocks;
/* Obtain host handle */
- if (!(host = nlmsvc_lookup_host(rqstp))
+ if (!(host = nlmsvc_lookup_host(rqstp, lock->caller, lock->len))
|| (argp->monitor && nsm_monitor(host) < 0))
goto no_locks;
*hostp = host;
@@ -260,7 +260,7 @@ static int nlm4svc_callback(struct svc_r
struct nlm_rqst *call;
int stat;
- host = nlmsvc_lookup_host(rqstp);
+ host = nlmsvc_lookup_host(rqstp, NULL, 0);
if (host == NULL)
return rpc_system_err;
Index: build/fs/lockd/svclock.c
===================================================================
--- build.orig/fs/lockd/svclock.c
+++ build/fs/lockd/svclock.c
@@ -179,7 +179,7 @@ nlmsvc_create_block(struct svc_rqst *rqs
struct nlm_rqst *call = NULL;
/* Create host handle for callback */
- host = nlmsvc_lookup_host(rqstp);
+ host = nlmsvc_lookup_host(rqstp, lock->caller, lock->len);
if (host == NULL)
return NULL;
@@ -451,6 +451,7 @@ nlmsvc_testlock(struct nlm_file *file, s
(long long)conflock->fl.fl_start,
(long long)conflock->fl.fl_end);
conflock->caller = "somehost"; /* FIXME */
+ conflock->len = strlen(conflock->caller);
conflock->oh.len = 0; /* don't return OH info */
conflock->svid = conflock->fl.fl_pid;
return nlm_lck_denied;
Index: build/fs/lockd/svcproc.c
===================================================================
--- build.orig/fs/lockd/svcproc.c
+++ build/fs/lockd/svcproc.c
@@ -66,7 +66,7 @@ nlmsvc_retrieve_args(struct svc_rqst *rq
return nlm_lck_denied_nolocks;
/* Obtain host handle */
- if (!(host = nlmsvc_lookup_host(rqstp))
+ if (!(host = nlmsvc_lookup_host(rqstp, lock->caller, lock->len))
|| (argp->monitor && nsm_monitor(host) < 0))
goto no_locks;
*hostp = host;
@@ -287,7 +287,7 @@ static int nlmsvc_callback(struct svc_rq
struct nlm_rqst *call;
int stat;
- host = nlmsvc_lookup_host(rqstp);
+ host = nlmsvc_lookup_host(rqstp, NULL, 0);
if (host == NULL)
return rpc_system_err;
Index: build/include/linux/lockd/lockd.h
===================================================================
--- build.orig/include/linux/lockd/lockd.h
+++ build/include/linux/lockd/lockd.h
@@ -163,9 +163,9 @@ int nlmclnt_reclaim(struct nlm_host *
/*
* Host cache
*/
-struct nlm_host * nlmclnt_lookup_host(const struct sockaddr_in *, int, int);
-struct nlm_host * nlmsvc_lookup_host(struct svc_rqst *);
-struct nlm_host * nlm_lookup_host(int server, const struct sockaddr_in *, int, int);
+struct nlm_host * nlmclnt_lookup_host(const struct sockaddr_in *, int, int, const char *, int);
+struct nlm_host * nlmsvc_lookup_host(struct svc_rqst *, const char *, int);
+struct nlm_host * nlm_lookup_host(int server, const struct sockaddr_in *, int, int, const char *, int);
struct rpc_clnt * nlm_bind_host(struct nlm_host *);
void nlm_rebind_host(struct nlm_host *);
struct nlm_host * nlm_get_host(struct nlm_host *);
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