Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/fs/lockd/mon.c b/fs/lockd/mon.c
new file mode 100644
index 0000000..6fc1beb
--- /dev/null
+++ b/fs/lockd/mon.c
@@ -0,0 +1,246 @@
+/*
+ * linux/fs/lockd/mon.c
+ *
+ * The kernel statd client.
+ *
+ * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
+ */
+
+#include <linux/types.h>
+#include <linux/utsname.h>
+#include <linux/kernel.h>
+#include <linux/sunrpc/clnt.h>
+#include <linux/sunrpc/svc.h>
+#include <linux/lockd/lockd.h>
+#include <linux/lockd/sm_inter.h>
+
+
+#define NLMDBG_FACILITY NLMDBG_MONITOR
+
+static struct rpc_clnt * nsm_create(void);
+
+static struct rpc_program nsm_program;
+
+/*
+ * Local NSM state
+ */
+u32 nsm_local_state;
+
+/*
+ * Common procedure for SM_MON/SM_UNMON calls
+ */
+static int
+nsm_mon_unmon(struct nlm_host *host, u32 proc, struct nsm_res *res)
+{
+ struct rpc_clnt *clnt;
+ int status;
+ struct nsm_args args;
+
+ clnt = nsm_create();
+ if (IS_ERR(clnt)) {
+ status = PTR_ERR(clnt);
+ goto out;
+ }
+
+ args.addr = host->h_addr.sin_addr.s_addr;
+ args.proto= (host->h_proto<<1) | host->h_server;
+ args.prog = NLM_PROGRAM;
+ args.vers = host->h_version;
+ args.proc = NLMPROC_NSM_NOTIFY;
+ memset(res, 0, sizeof(*res));
+
+ status = rpc_call(clnt, proc, &args, res, 0);
+ if (status < 0)
+ printk(KERN_DEBUG "nsm_mon_unmon: rpc failed, status=%d\n",
+ status);
+ else
+ status = 0;
+ out:
+ return status;
+}
+
+/*
+ * Set up monitoring of a remote host
+ */
+int
+nsm_monitor(struct nlm_host *host)
+{
+ struct nsm_res res;
+ int status;
+
+ dprintk("lockd: nsm_monitor(%s)\n", host->h_name);
+
+ status = nsm_mon_unmon(host, SM_MON, &res);
+
+ if (status < 0 || res.status != 0)
+ printk(KERN_NOTICE "lockd: cannot monitor %s\n", host->h_name);
+ else
+ host->h_monitored = 1;
+ return status;
+}
+
+/*
+ * Cease to monitor remote host
+ */
+int
+nsm_unmonitor(struct nlm_host *host)
+{
+ struct nsm_res res;
+ int status;
+
+ dprintk("lockd: nsm_unmonitor(%s)\n", host->h_name);
+
+ status = nsm_mon_unmon(host, SM_UNMON, &res);
+ if (status < 0)
+ printk(KERN_NOTICE "lockd: cannot unmonitor %s\n", host->h_name);
+ else
+ host->h_monitored = 0;
+ return status;
+}
+
+/*
+ * Create NSM client for the local host
+ */
+static struct rpc_clnt *
+nsm_create(void)
+{
+ struct rpc_xprt *xprt;
+ struct rpc_clnt *clnt;
+ struct sockaddr_in sin;
+
+ sin.sin_family = AF_INET;
+ sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
+ sin.sin_port = 0;
+
+ xprt = xprt_create_proto(IPPROTO_UDP, &sin, NULL);
+ if (IS_ERR(xprt))
+ return (struct rpc_clnt *)xprt;
+
+ clnt = rpc_create_client(xprt, "localhost",
+ &nsm_program, SM_VERSION,
+ RPC_AUTH_NULL);
+ if (IS_ERR(clnt))
+ goto out_destroy;
+ clnt->cl_softrtry = 1;
+ clnt->cl_chatty = 1;
+ clnt->cl_oneshot = 1;
+ xprt->resvport = 1; /* NSM requires a reserved port */
+ return clnt;
+
+out_destroy:
+ xprt_destroy(xprt);
+ return clnt;
+}
+
+/*
+ * XDR functions for NSM.
+ */
+
+static u32 *
+xdr_encode_common(struct rpc_rqst *rqstp, u32 *p, struct nsm_args *argp)
+{
+ char buffer[20];
+
+ /*
+ * Use the dotted-quad IP address of the remote host as
+ * identifier. Linux statd always looks up the canonical
+ * hostname first for whatever remote hostname it receives,
+ * so this works alright.
+ */
+ sprintf(buffer, "%u.%u.%u.%u", NIPQUAD(argp->addr));
+ if (!(p = xdr_encode_string(p, buffer))
+ || !(p = xdr_encode_string(p, system_utsname.nodename)))
+ return ERR_PTR(-EIO);
+ *p++ = htonl(argp->prog);
+ *p++ = htonl(argp->vers);
+ *p++ = htonl(argp->proc);
+
+ return p;
+}
+
+static int
+xdr_encode_mon(struct rpc_rqst *rqstp, u32 *p, struct nsm_args *argp)
+{
+ p = xdr_encode_common(rqstp, p, argp);
+ if (IS_ERR(p))
+ return PTR_ERR(p);
+ *p++ = argp->addr;
+ *p++ = argp->vers;
+ *p++ = argp->proto;
+ *p++ = 0;
+ rqstp->rq_slen = xdr_adjust_iovec(rqstp->rq_svec, p);
+ return 0;
+}
+
+static int
+xdr_encode_unmon(struct rpc_rqst *rqstp, u32 *p, struct nsm_args *argp)
+{
+ p = xdr_encode_common(rqstp, p, argp);
+ if (IS_ERR(p))
+ return PTR_ERR(p);
+ rqstp->rq_slen = xdr_adjust_iovec(rqstp->rq_svec, p);
+ return 0;
+}
+
+static int
+xdr_decode_stat_res(struct rpc_rqst *rqstp, u32 *p, struct nsm_res *resp)
+{
+ resp->status = ntohl(*p++);
+ resp->state = ntohl(*p++);
+ dprintk("nsm: xdr_decode_stat_res status %d state %d\n",
+ resp->status, resp->state);
+ return 0;
+}
+
+static int
+xdr_decode_stat(struct rpc_rqst *rqstp, u32 *p, struct nsm_res *resp)
+{
+ resp->state = ntohl(*p++);
+ return 0;
+}
+
+#define SM_my_name_sz (1+XDR_QUADLEN(SM_MAXSTRLEN))
+#define SM_my_id_sz (3+1+SM_my_name_sz)
+#define SM_mon_id_sz (1+XDR_QUADLEN(20)+SM_my_id_sz)
+#define SM_mon_sz (SM_mon_id_sz+4)
+#define SM_monres_sz 2
+#define SM_unmonres_sz 1
+
+#ifndef MAX
+# define MAX(a, b) (((a) > (b))? (a) : (b))
+#endif
+
+static struct rpc_procinfo nsm_procedures[] = {
+[SM_MON] = {
+ .p_proc = SM_MON,
+ .p_encode = (kxdrproc_t) xdr_encode_mon,
+ .p_decode = (kxdrproc_t) xdr_decode_stat_res,
+ .p_bufsiz = MAX(SM_mon_sz, SM_monres_sz) << 2,
+ },
+[SM_UNMON] = {
+ .p_proc = SM_UNMON,
+ .p_encode = (kxdrproc_t) xdr_encode_unmon,
+ .p_decode = (kxdrproc_t) xdr_decode_stat,
+ .p_bufsiz = MAX(SM_mon_id_sz, SM_unmonres_sz) << 2,
+ },
+};
+
+static struct rpc_version nsm_version1 = {
+ .number = 1,
+ .nrprocs = sizeof(nsm_procedures)/sizeof(nsm_procedures[0]),
+ .procs = nsm_procedures
+};
+
+static struct rpc_version * nsm_version[] = {
+ [1] = &nsm_version1,
+};
+
+static struct rpc_stat nsm_stats;
+
+static struct rpc_program nsm_program = {
+ .name = "statd",
+ .number = SM_PROGRAM,
+ .nrvers = sizeof(nsm_version)/sizeof(nsm_version[0]),
+ .version = nsm_version,
+ .stats = &nsm_stats
+};
