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authorChuck Lever <chuck.lever@oracle.com>2008-12-05 19:02:45 -0500
committerJ. Bruce Fields <bfields@citi.umich.edu>2009-01-06 11:53:53 -0500
commit67c6d107a689243979a2b5f15244b5261634a924 (patch)
tree36e2093df96a449c284640c9cc329fc251e98bd0 /fs/lockd/host.c
parent03eb1dcbb799304b58730f4dba65812f49fb305e (diff)
NSM: Move nsm_find() to fs/lockd/mon.c
The nsm_find() function sets up fresh nsm_handle entries. This is where we will store the "priv" cookie used to lookup nsm_handles during reboot recovery. The cookie will be constructed when nsm_find() creates a new nsm_handle. As much as possible, I would like to keep everything that handles a "priv" cookie in fs/lockd/mon.c so that all the smarts are in one source file. That organization should make it pretty simple to see how all this works. To me, it makes more sense than the current arrangement to keep nsm_find() with nsm_monitor() and nsm_unmonitor(). So, start reorganizing by moving nsm_find() into fs/lockd/mon.c. The nsm_release() function comes along too, since it shares the nsm_lock global variable. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Diffstat (limited to 'fs/lockd/host.c')
-rw-r--r--fs/lockd/host.c128
1 files changed, 0 insertions, 128 deletions
diff --git a/fs/lockd/host.c b/fs/lockd/host.c
index 1d523c1a7b6..dbdeaa88d2f 100644
--- a/fs/lockd/host.c
+++ b/fs/lockd/host.c
@@ -32,12 +32,6 @@ 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);
-static void nsm_release(struct nsm_handle *nsm);
struct nlm_lookup_host_info {
const int server; /* search for server|client */
@@ -106,43 +100,6 @@ static void nlm_clear_port(struct sockaddr *sap)
}
}
-static void nlm_display_ipv4_address(const struct sockaddr *sap, char *buf,
- const size_t len)
-{
- const struct sockaddr_in *sin = (struct sockaddr_in *)sap;
- snprintf(buf, len, "%pI4", &sin->sin_addr.s_addr);
-}
-
-static void nlm_display_ipv6_address(const struct sockaddr *sap, char *buf,
- const size_t len)
-{
- const struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sap;
-
- if (ipv6_addr_v4mapped(&sin6->sin6_addr))
- snprintf(buf, len, "%pI4", &sin6->sin6_addr.s6_addr32[3]);
- else if (sin6->sin6_scope_id != 0)
- snprintf(buf, len, "%pI6%%%u", &sin6->sin6_addr,
- sin6->sin6_scope_id);
- else
- snprintf(buf, len, "%pI6", &sin6->sin6_addr);
-}
-
-static void nlm_display_address(const struct sockaddr *sap,
- char *buf, const size_t len)
-{
- switch (sap->sa_family) {
- case AF_INET:
- nlm_display_ipv4_address(sap, buf, len);
- break;
- case AF_INET6:
- nlm_display_ipv6_address(sap, buf, len);
- break;
- default:
- snprintf(buf, len, "unsupported address family");
- break;
- }
-}
-
/*
* Common host lookup routine for server & client
*/
@@ -635,88 +592,3 @@ 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
- */
-static 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);
- }
-}