[PATCH] knfsd: SUNRPC: Add a function to format the address in an svc_rqst for printing
There are loads of places where the RPC server assumes that the rq_addr fields
contains an IPv4 address. Top among these are error and debugging messages
that display the server's IP address.
Let's refactor the address printing into a separate function that's smart
enough to figure out the difference between IPv4 and IPv6 addresses.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Cc: Aurelien Charbon <aurelien.charbon@ext.bull.net>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c
index 2c3d5ac..80fcacc 100644
--- a/fs/lockd/svc.c
+++ b/fs/lockd/svc.c
@@ -141,6 +141,7 @@
*/
while ((nlmsvc_users || !signalled()) && nlmsvc_pid == current->pid) {
long timeout = MAX_SCHEDULE_TIMEOUT;
+ char buf[RPC_MAX_ADDRBUFLEN];
if (signalled()) {
flush_signals(current);
@@ -175,11 +176,10 @@
break;
}
- dprintk("lockd: request from %08x\n",
- (unsigned)ntohl(rqstp->rq_addr.sin_addr.s_addr));
+ dprintk("lockd: request from %s\n",
+ svc_print_addr(rqstp, buf, sizeof(buf)));
svc_process(rqstp);
-
}
flush_signals(current);
diff --git a/fs/lockd/svc4proc.c b/fs/lockd/svc4proc.c
index f67146a..9b591bc 100644
--- a/fs/lockd/svc4proc.c
+++ b/fs/lockd/svc4proc.c
@@ -426,10 +426,9 @@
dprintk("lockd: SM_NOTIFY called\n");
if (saddr.sin_addr.s_addr != htonl(INADDR_LOOPBACK)
|| ntohs(saddr.sin_port) >= 1024) {
- printk(KERN_WARNING
- "lockd: rejected NSM callback from %08x:%d\n",
- ntohl(rqstp->rq_addr.sin_addr.s_addr),
- ntohs(rqstp->rq_addr.sin_port));
+ char buf[RPC_MAX_ADDRBUFLEN];
+ printk(KERN_WARNING "lockd: rejected NSM callback from %s\n",
+ svc_print_addr(rqstp, buf, sizeof(buf)));
return rpc_system_err;
}
diff --git a/fs/lockd/svcproc.c b/fs/lockd/svcproc.c
index 3707c3a..f590304 100644
--- a/fs/lockd/svcproc.c
+++ b/fs/lockd/svcproc.c
@@ -457,10 +457,9 @@
dprintk("lockd: SM_NOTIFY called\n");
if (saddr.sin_addr.s_addr != htonl(INADDR_LOOPBACK)
|| ntohs(saddr.sin_port) >= 1024) {
- printk(KERN_WARNING
- "lockd: rejected NSM callback from %08x:%d\n",
- ntohl(rqstp->rq_addr.sin_addr.s_addr),
- ntohs(rqstp->rq_addr.sin_port));
+ char buf[RPC_MAX_ADDRBUFLEN];
+ printk(KERN_WARNING "lockd: rejected NSM callback from %s\n",
+ svc_print_addr(rqstp, buf, sizeof(buf)));
return rpc_system_err;
}
diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c
index a070109..8c790af 100644
--- a/fs/nfs/callback.c
+++ b/fs/nfs/callback.c
@@ -71,6 +71,8 @@
complete(&nfs_callback_info.started);
for(;;) {
+ char buf[RPC_MAX_ADDRBUFLEN];
+
if (signalled()) {
if (nfs_callback_info.users == 0)
break;
@@ -88,8 +90,8 @@
__FUNCTION__, -err);
break;
}
- dprintk("%s: request from %u.%u.%u.%u\n", __FUNCTION__,
- NIPQUAD(rqstp->rq_addr.sin_addr.s_addr));
+ dprintk("%s: request from %s\n", __FUNCTION__,
+ svc_print_addr(rqstp, buf, sizeof(buf)));
svc_process(rqstp);
}
@@ -166,13 +168,17 @@
{
struct sockaddr_in *addr = &rqstp->rq_addr;
struct nfs_client *clp;
+ char buf[RPC_MAX_ADDRBUFLEN];
/* Don't talk to strangers */
clp = nfs_find_client(addr, 4);
if (clp == NULL)
return SVC_DROP;
- dprintk("%s: %u.%u.%u.%u NFSv4 callback!\n", __FUNCTION__, NIPQUAD(addr->sin_addr));
+
+ dprintk("%s: %s NFSv4 callback!\n", __FUNCTION__,
+ svc_print_addr(rqstp, buf, sizeof(buf)));
nfs_put_client(clp);
+
switch (rqstp->rq_authop->flavour) {
case RPC_AUTH_NULL:
if (rqstp->rq_proc != CB_NULL)
diff --git a/fs/nfsd/nfsfh.c b/fs/nfsd/nfsfh.c
index c59d6fb..a0b4282 100644
--- a/fs/nfsd/nfsfh.c
+++ b/fs/nfsd/nfsfh.c
@@ -20,6 +20,7 @@
#include <linux/mount.h>
#include <asm/pgtable.h>
+#include <linux/sunrpc/clnt.h>
#include <linux/sunrpc/svc.h>
#include <linux/nfsd/nfsd.h>
@@ -180,10 +181,10 @@
/* Check if the request originated from a secure port. */
error = nfserr_perm;
if (!rqstp->rq_secure && EX_SECURE(exp)) {
+ char buf[RPC_MAX_ADDRBUFLEN];
printk(KERN_WARNING
- "nfsd: request from insecure port (%u.%u.%u.%u:%d)!\n",
- NIPQUAD(rqstp->rq_addr.sin_addr.s_addr),
- ntohs(rqstp->rq_addr.sin_port));
+ "nfsd: request from insecure port %s!\n",
+ svc_print_addr(rqstp, buf, sizeof(buf)));
goto out;
}
diff --git a/fs/nfsd/nfsproc.c b/fs/nfsd/nfsproc.c
index ec983b7..5cc2eec 100644
--- a/fs/nfsd/nfsproc.c
+++ b/fs/nfsd/nfsproc.c
@@ -19,6 +19,7 @@
#include <linux/unistd.h>
#include <linux/slab.h>
+#include <linux/sunrpc/clnt.h>
#include <linux/sunrpc/svc.h>
#include <linux/nfsd/nfsd.h>
#include <linux/nfsd/cache.h>
@@ -147,10 +148,10 @@
*/
if (NFSSVC_MAXBLKSIZE_V2 < argp->count) {
+ char buf[RPC_MAX_ADDRBUFLEN];
printk(KERN_NOTICE
- "oversized read request from %u.%u.%u.%u:%d (%d bytes)\n",
- NIPQUAD(rqstp->rq_addr.sin_addr.s_addr),
- ntohs(rqstp->rq_addr.sin_port),
+ "oversized read request from %s (%d bytes)\n",
+ svc_print_addr(rqstp, buf, sizeof(buf)),
argp->count);
argp->count = NFSSVC_MAXBLKSIZE_V2;
}
diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h
index 64f3d60..1178689 100644
--- a/include/linux/sunrpc/svc.h
+++ b/include/linux/sunrpc/svc.h
@@ -368,5 +368,8 @@
void svc_wake_up(struct svc_serv *);
void svc_reserve(struct svc_rqst *rqstp, int space);
struct svc_pool * svc_pool_for_cpu(struct svc_serv *serv, int cpu);
+char * svc_print_addr(struct svc_rqst *, char *, size_t);
+
+#define RPC_MAX_ADDRBUFLEN (63U)
#endif /* SUNRPC_SVC_H */
diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index a98be09..08de328 100644
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c
@@ -41,6 +41,7 @@
#include <asm/ioctls.h>
#include <linux/sunrpc/types.h>
+#include <linux/sunrpc/clnt.h>
#include <linux/sunrpc/xdr.h>
#include <linux/sunrpc/svcsock.h>
#include <linux/sunrpc/stats.h>
@@ -121,6 +122,41 @@
}
#endif
+static char *__svc_print_addr(struct sockaddr *addr, char *buf, size_t len)
+{
+ switch (addr->sa_family) {
+ case AF_INET:
+ snprintf(buf, len, "%u.%u.%u.%u, port=%u",
+ NIPQUAD(((struct sockaddr_in *) addr)->sin_addr),
+ htons(((struct sockaddr_in *) addr)->sin_port));
+ break;
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+ case AF_INET6:
+ snprintf(buf, len, "%x:%x:%x:%x:%x:%x:%x:%x, port=%u",
+ NIP6(((struct sockaddr_in6 *) addr)->sin6_addr),
+ htons(((struct sockaddr_in6 *) addr)->sin6_port));
+ break;
+#endif
+ default:
+ snprintf(buf, len, "unknown address type: %d", addr->sa_family);
+ break;
+ }
+ return buf;
+}
+
+/**
+ * svc_print_addr - Format rq_addr field for printing
+ * @rqstp: svc_rqst struct containing address to print
+ * @buf: target buffer for formatted address
+ * @len: length of target buffer
+ *
+ */
+char *svc_print_addr(struct svc_rqst *rqstp, char *buf, size_t len)
+{
+ return __svc_print_addr((struct sockaddr *) &rqstp->rq_addr, buf, len);
+}
+EXPORT_SYMBOL_GPL(svc_print_addr);
+
/*
* Queue up an idle server thread. Must have pool->sp_lock held.
* Note: this is really a stack rather than a queue, so that we only
@@ -429,6 +465,7 @@
size_t base = xdr->page_base;
unsigned int pglen = xdr->page_len;
unsigned int flags = MSG_MORE;
+ char buf[RPC_MAX_ADDRBUFLEN];
slen = xdr->len;
@@ -491,9 +528,9 @@
len += result;
}
out:
- dprintk("svc: socket %p sendto([%p %Zu... ], %d) = %d (addr %x)\n",
- rqstp->rq_sock, xdr->head[0].iov_base, xdr->head[0].iov_len, xdr->len, len,
- rqstp->rq_addr.sin_addr.s_addr);
+ dprintk("svc: socket %p sendto([%p %Zu... ], %d) = %d (addr %s)\n",
+ rqstp->rq_sock, xdr->head[0].iov_base, xdr->head[0].iov_len,
+ xdr->len, len, svc_print_addr(rqstp, buf, sizeof(buf)));
return len;
}
@@ -878,6 +915,7 @@
struct socket *newsock;
struct svc_sock *newsvsk;
int err, slen;
+ char buf[RPC_MAX_ADDRBUFLEN];
dprintk("svc: tcp_accept %p sock %p\n", svsk, sock);
if (!sock)
@@ -908,18 +946,19 @@
}
/* Ideally, we would want to reject connections from unauthorized
- * hosts here, but when we get encription, the IP of the host won't
- * tell us anything. For now just warn about unpriv connections.
+ * hosts here, but when we get encryption, the IP of the host won't
+ * tell us anything. For now just warn about unpriv connections.
*/
if (ntohs(sin.sin_port) >= 1024) {
dprintk(KERN_WARNING
- "%s: connect from unprivileged port: %u.%u.%u.%u:%d\n",
+ "%s: connect from unprivileged port: %s\n",
serv->sv_name,
- NIPQUAD(sin.sin_addr.s_addr), ntohs(sin.sin_port));
+ __svc_print_addr((struct sockaddr *) &sin, buf,
+ sizeof(buf)));
}
-
- dprintk("%s: connect from %u.%u.%u.%u:%04x\n", serv->sv_name,
- NIPQUAD(sin.sin_addr.s_addr), ntohs(sin.sin_port));
+ dprintk("%s: connect from %s\n", serv->sv_name,
+ __svc_print_addr((struct sockaddr *) &sin, buf,
+ sizeof(buf)));
/* make sure that a write doesn't block forever when
* low on memory
@@ -955,11 +994,9 @@
"sockets, consider increasing the "
"number of nfsd threads\n",
serv->sv_name);
- printk(KERN_NOTICE "%s: last TCP connect from "
- "%u.%u.%u.%u:%d\n",
- serv->sv_name,
- NIPQUAD(sin.sin_addr.s_addr),
- ntohs(sin.sin_port));
+ printk(KERN_NOTICE
+ "%s: last TCP connect from %s\n",
+ serv->sv_name, buf);
}
/*
* Always select the oldest socket. It's not fair,
@@ -1587,11 +1624,12 @@
struct socket *sock;
int error;
int type;
+ char buf[RPC_MAX_ADDRBUFLEN];
- dprintk("svc: svc_create_socket(%s, %d, %u.%u.%u.%u:%d)\n",
- serv->sv_program->pg_name, protocol,
- NIPQUAD(sin->sin_addr.s_addr),
- ntohs(sin->sin_port));
+ dprintk("svc: svc_create_socket(%s, %d, %s)\n",
+ serv->sv_program->pg_name, protocol,
+ __svc_print_addr((struct sockaddr *) sin, buf,
+ sizeof(buf)));
if (protocol != IPPROTO_UDP && protocol != IPPROTO_TCP) {
printk(KERN_WARNING "svc: only UDP and TCP "
