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From 342446a4a624d4ee8254af859bb7f1de6d268679 Mon Sep 17 00:00:00 2001
From: Weston Andros Adamson <dros@netapp.com>
Date: Tue, 7 May 2013 11:25:29 -0400
Subject: [PATCH] statd: exit if a statd is already running
Moves nfs_probe_statd from mount to nfs support lib to share with statd.
Acked-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Weston Andros Adamson <dros@netapp.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
---
support/include/nfsrpc.h | 5 +++++
support/nfs/getport.c | 22 ++++++++++++++++++++++
utils/mount/network.c | 17 -----------------
utils/statd/statd.c | 7 +++++++
4 files changed, 34 insertions(+), 17 deletions(-)
diff --git a/support/include/nfsrpc.h b/support/include/nfsrpc.h
index a0b80e1..1bfae7a 100644
--- a/support/include/nfsrpc.h
+++ b/support/include/nfsrpc.h
@@ -156,6 +156,11 @@ extern unsigned long nfs_pmap_getport(const struct sockaddr_in *,
const struct timeval *);
/*
+ * Use nfs_pmap_getport to see if statd is running locally
+ */
+extern int nfs_probe_statd(void);
+
+/*
* Contact a remote RPC service to discover whether it is responding
* to requests.
*/
diff --git a/support/nfs/getport.c b/support/nfs/getport.c
index 3331ad4..081594c 100644
--- a/support/nfs/getport.c
+++ b/support/nfs/getport.c
@@ -1102,3 +1102,25 @@ unsigned long nfs_pmap_getport(const struct sockaddr_in *sin,
return port;
}
+
+static const char *nfs_ns_pgmtbl[] = {
+ "status",
+ NULL,
+};
+
+/*
+ * nfs_probe_statd - use nfs_pmap_getport to see if statd is running locally
+ *
+ * Returns non-zero if statd is running locally.
+ */
+int nfs_probe_statd(void)
+{
+ struct sockaddr_in addr = {
+ .sin_family = AF_INET,
+ .sin_addr.s_addr = htonl(INADDR_LOOPBACK),
+ };
+ rpcprog_t program = nfs_getrpcbyname(NSMPROG, nfs_ns_pgmtbl);
+
+ return nfs_getport_ping((struct sockaddr *)(char *)&addr, sizeof(addr),
+ program, (rpcvers_t)1, IPPROTO_UDP);
+}
diff --git a/utils/mount/network.c b/utils/mount/network.c
index 4be48cd..e2cdcaf 100644
--- a/utils/mount/network.c
+++ b/utils/mount/network.c
@@ -65,11 +65,6 @@ extern int nfs_mount_data_version;
extern char *progname;
extern int verbose;
-static const char *nfs_ns_pgmtbl[] = {
- "status",
- NULL,
-};
-
static const char *nfs_mnt_pgmtbl[] = {
"mount",
"mountd",
@@ -761,18 +756,6 @@ int probe_bothports(clnt_addr_t *mnt_server, clnt_addr_t *nfs_server)
&nfs_server->pmap);
}
-static int nfs_probe_statd(void)
-{
- struct sockaddr_in addr = {
- .sin_family = AF_INET,
- .sin_addr.s_addr = htonl(INADDR_LOOPBACK),
- };
- rpcprog_t program = nfs_getrpcbyname(NSMPROG, nfs_ns_pgmtbl);
-
- return nfs_getport_ping(SAFE_SOCKADDR(&addr), sizeof(addr),
- program, (rpcvers_t)1, IPPROTO_UDP);
-}
-
/**
* start_statd - attempt to start rpc.statd
*
diff --git a/utils/statd/statd.c b/utils/statd/statd.c
index 652546c..8c51bcc 100644
--- a/utils/statd/statd.c
+++ b/utils/statd/statd.c
@@ -28,6 +28,7 @@
#include "statd.h"
#include "nfslib.h"
+#include "nfsrpc.h"
#include "nsm.h"
/* Socket operations */
@@ -237,6 +238,12 @@ int main (int argc, char **argv)
/* Set hostname */
MY_NAME = NULL;
+ /* Refuse to start if another statd is running */
+ if (nfs_probe_statd()) {
+ fprintf(stderr, "Statd service already running!\n");
+ exit(1);
+ }
+
/* Process command line switches */
while ((arg = getopt_long(argc, argv, "h?vVFNH:dn:p:o:P:L", longopts, NULL)) != EOF) {
switch (arg) {
--
1.8.3.2
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