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Diffstat (limited to 'cleopatre/linux-2.6.25.10-spc300/fs/nfs/mount_clnt.c')
-rw-r--r--cleopatre/linux-2.6.25.10-spc300/fs/nfs/mount_clnt.c201
1 files changed, 201 insertions, 0 deletions
diff --git a/cleopatre/linux-2.6.25.10-spc300/fs/nfs/mount_clnt.c b/cleopatre/linux-2.6.25.10-spc300/fs/nfs/mount_clnt.c
new file mode 100644
index 0000000000..49c7cd0502
--- /dev/null
+++ b/cleopatre/linux-2.6.25.10-spc300/fs/nfs/mount_clnt.c
@@ -0,0 +1,201 @@
+/*
+ * In-kernel MOUNT protocol client
+ *
+ * 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/sched.h>
+#include <linux/nfs_fs.h>
+
+#ifdef RPC_DEBUG
+# define NFSDBG_FACILITY NFSDBG_MOUNT
+#endif
+
+static struct rpc_program mnt_program;
+
+struct mnt_fhstatus {
+ u32 status;
+ struct nfs_fh *fh;
+};
+
+/**
+ * nfs_mount - Obtain an NFS file handle for the given host and path
+ * @addr: pointer to server's address
+ * @len: size of server's address
+ * @hostname: name of server host, or NULL
+ * @path: pointer to string containing export path to mount
+ * @version: mount version to use for this request
+ * @protocol: transport protocol to use for thie request
+ * @fh: pointer to location to place returned file handle
+ *
+ * Uses default timeout parameters specified by underlying transport.
+ */
+int nfs_mount(struct sockaddr *addr, size_t len, char *hostname, char *path,
+ int version, int protocol, struct nfs_fh *fh)
+{
+ struct mnt_fhstatus result = {
+ .fh = fh
+ };
+ struct rpc_message msg = {
+ .rpc_argp = path,
+ .rpc_resp = &result,
+ };
+ struct rpc_create_args args = {
+ .protocol = protocol,
+ .address = addr,
+ .addrsize = len,
+ .servername = hostname,
+ .program = &mnt_program,
+ .version = version,
+ .authflavor = RPC_AUTH_UNIX,
+ .flags = 0,
+ };
+ struct rpc_clnt *mnt_clnt;
+ int status;
+
+ dprintk("NFS: sending MNT request for %s:%s\n",
+ (hostname ? hostname : "server"), path);
+
+ mnt_clnt = rpc_create(&args);
+ if (IS_ERR(mnt_clnt))
+ goto out_clnt_err;
+
+ if (version == NFS_MNT3_VERSION)
+ msg.rpc_proc = &mnt_clnt->cl_procinfo[MOUNTPROC3_MNT];
+ else
+ msg.rpc_proc = &mnt_clnt->cl_procinfo[MNTPROC_MNT];
+
+ status = rpc_call_sync(mnt_clnt, &msg, 0);
+ rpc_shutdown_client(mnt_clnt);
+
+ if (status < 0)
+ goto out_call_err;
+ if (result.status != 0)
+ goto out_mnt_err;
+
+ dprintk("NFS: MNT request succeeded\n");
+ status = 0;
+
+out:
+ return status;
+
+out_clnt_err:
+ status = PTR_ERR(mnt_clnt);
+ dprintk("NFS: failed to create RPC client, status=%d\n", status);
+ goto out;
+
+out_call_err:
+ dprintk("NFS: failed to start MNT request, status=%d\n", status);
+ goto out;
+
+out_mnt_err:
+ dprintk("NFS: MNT server returned result %d\n", result.status);
+ status = -EACCES;
+ goto out;
+}
+
+/*
+ * XDR encode/decode functions for MOUNT
+ */
+static int xdr_encode_dirpath(struct rpc_rqst *req, __be32 *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, __be32 *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, __be32 *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)
+#define MNT_fhstatus3_sz (1 + 16)
+
+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_arglen = MNT_dirpath_sz,
+ .p_replen = MNT_fhstatus_sz,
+ .p_statidx = MNTPROC_MNT,
+ .p_name = "MOUNT",
+ },
+};
+
+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_arglen = MNT_dirpath_sz,
+ .p_replen = MNT_fhstatus3_sz,
+ .p_statidx = MOUNTPROC3_MNT,
+ .p_name = "MOUNT",
+ },
+};
+
+
+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 = ARRAY_SIZE(mnt_version),
+ .version = mnt_version,
+ .stats = &mnt_stats,
+};