Linux-2.6.12-rc2v2.6.12-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!

1 files changed, 183 insertions, 0 deletions

diff --git a/fs/nfs/mount_clnt.c b/fs/nfs/mount_clnt.c
new file mode 100644
index 00000000000..9d3ddad96d9
--- /dev/null
+++ b/fs/nfs/mount_clnt.c
@@ -0,0 +1,183 @@
+/*
+ * linux/fs/nfs/mount_clnt.c
+ *
+ * MOUNT client to support NFSroot.
+ *
+ * Copyright (C) 1997, Olaf Kirch <okir@monad.swb.de>
+ */
+
+#include <linux/types.h>
+#include <linux/socket.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/uio.h>
+#include <linux/net.h>
+#include <linux/in.h>
+#include <linux/sunrpc/clnt.h>
+#include <linux/sunrpc/xprt.h>
+#include <linux/sunrpc/sched.h>
+#include <linux/nfs_fs.h>
+
+#ifdef RPC_DEBUG
+# define NFSDBG_FACILITY	NFSDBG_ROOT
+#endif
+
+/*
+#define MOUNT_PROGRAM		100005
+#define MOUNT_VERSION		1
+#define MOUNT_MNT		1
+#define MOUNT_UMNT		3
+ */
+
+static struct rpc_clnt *	mnt_create(char *, struct sockaddr_in *,
+								int, int);
+static struct rpc_program	mnt_program;
+
+struct mnt_fhstatus {
+	unsigned int		status;
+	struct nfs_fh *		fh;
+};
+
+/*
+ * Obtain an NFS file handle for the given host and path
+ */
+int
+nfsroot_mount(struct sockaddr_in *addr, char *path, struct nfs_fh *fh,
+		int version, int protocol)
+{
+	struct rpc_clnt		*mnt_clnt;
+	struct mnt_fhstatus	result = {
+		.fh		= fh
+	};
+	char			hostname[32];
+	int			status;
+	int			call;
+
+	dprintk("NFS:      nfs_mount(%08x:%s)\n",
+			(unsigned)ntohl(addr->sin_addr.s_addr), path);
+
+	sprintf(hostname, "%u.%u.%u.%u", NIPQUAD(addr->sin_addr.s_addr));
+	mnt_clnt = mnt_create(hostname, addr, version, protocol);
+	if (IS_ERR(mnt_clnt))
+		return PTR_ERR(mnt_clnt);
+
+	call = (version == NFS_MNT3_VERSION) ? MOUNTPROC3_MNT : MNTPROC_MNT;
+	status = rpc_call(mnt_clnt, call, path, &result, 0);
+	return status < 0? status : (result.status? -EACCES : 0);
+}
+
+static struct rpc_clnt *
+mnt_create(char *hostname, struct sockaddr_in *srvaddr, int version,
+		int protocol)
+{
+	struct rpc_xprt	*xprt;
+	struct rpc_clnt	*clnt;
+
+	xprt = xprt_create_proto(protocol, srvaddr, NULL);
+	if (IS_ERR(xprt))
+		return (struct rpc_clnt *)xprt;
+
+	clnt = rpc_create_client(xprt, hostname,
+				&mnt_program, version,
+				RPC_AUTH_UNIX);
+	if (IS_ERR(clnt)) {
+		xprt_destroy(xprt);
+	} else {
+		clnt->cl_softrtry = 1;
+		clnt->cl_chatty   = 1;
+		clnt->cl_oneshot  = 1;
+		clnt->cl_intr = 1;
+	}
+	return clnt;
+}
+
+/*
+ * XDR encode/decode functions for MOUNT
+ */
+static int
+xdr_encode_dirpath(struct rpc_rqst *req, u32 *p, const char *path)
+{
+	p = xdr_encode_string(p, path);
+
+	req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
+	return 0;
+}
+
+static int
+xdr_decode_fhstatus(struct rpc_rqst *req, u32 *p, struct mnt_fhstatus *res)
+{
+	struct nfs_fh *fh = res->fh;
+
+	if ((res->status = ntohl(*p++)) == 0) {
+		fh->size = NFS2_FHSIZE;
+		memcpy(fh->data, p, NFS2_FHSIZE);
+	}
+	return 0;
+}
+
+static int
+xdr_decode_fhstatus3(struct rpc_rqst *req, u32 *p, struct mnt_fhstatus *res)
+{
+	struct nfs_fh *fh = res->fh;
+
+	if ((res->status = ntohl(*p++)) == 0) {
+		int size = ntohl(*p++);
+		if (size <= NFS3_FHSIZE) {
+			fh->size = size;
+			memcpy(fh->data, p, size);
+		} else
+			res->status = -EBADHANDLE;
+	}
+	return 0;
+}
+
+#define MNT_dirpath_sz		(1 + 256)
+#define MNT_fhstatus_sz		(1 + 8)
+
+static struct rpc_procinfo	mnt_procedures[] = {
+[MNTPROC_MNT] = {
+	  .p_proc		= MNTPROC_MNT,
+	  .p_encode		= (kxdrproc_t) xdr_encode_dirpath,	
+	  .p_decode		= (kxdrproc_t) xdr_decode_fhstatus,
+	  .p_bufsiz		= MNT_dirpath_sz << 2,
+	},
+};
+
+static struct rpc_procinfo mnt3_procedures[] = {
+[MOUNTPROC3_MNT] = {
+	  .p_proc		= MOUNTPROC3_MNT,
+	  .p_encode		= (kxdrproc_t) xdr_encode_dirpath,
+	  .p_decode		= (kxdrproc_t) xdr_decode_fhstatus3,
+	  .p_bufsiz		= MNT_dirpath_sz << 2,
+	},
+};
+
+
+static struct rpc_version	mnt_version1 = {
+		.number		= 1,
+		.nrprocs 	= 2,
+		.procs 		= mnt_procedures
+};
+
+static struct rpc_version       mnt_version3 = {
+		.number		= 3,
+		.nrprocs	= 2,
+		.procs		= mnt3_procedures
+};
+
+static struct rpc_version *	mnt_version[] = {
+	NULL,
+	&mnt_version1,
+	NULL,
+	&mnt_version3,
+};
+
+static struct rpc_stat		mnt_stats;
+
+static struct rpc_program	mnt_program = {
+	.name		= "mount",
+	.number		= NFS_MNT_PROGRAM,
+	.nrvers		= sizeof(mnt_version)/sizeof(mnt_version[0]),
+	.version	= mnt_version,
+	.stats		= &mnt_stats,
+};