/*
- * linux/fs/nfs/mount_clnt.c
- *
- * MOUNT client to support NFSroot.
+ * In-kernel MOUNT protocol client
*
* Copyright (C) 1997, Olaf Kirch <okir@monad.swb.de>
*/
#include <linux/sunrpc/clnt.h>
#include <linux/sunrpc/sched.h>
#include <linux/nfs_fs.h>
+#include "internal.h"
#ifdef RPC_DEBUG
# define NFSDBG_FACILITY NFSDBG_MOUNT
#endif
-/*
-#define MOUNT_PROGRAM 100005
-#define MOUNT_VERSION 1
-#define MOUNT_MNT 1
-#define MOUNT_UMNT 3
- */
-
static struct rpc_program mnt_program;
struct mnt_fhstatus {
- unsigned int status;
- struct nfs_fh * fh;
+ 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
+ * @info: pointer to mount request arguments
*
* 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)
+int nfs_mount(struct nfs_mount_request *info)
{
struct mnt_fhstatus result = {
- .fh = fh
+ .fh = info->fh
};
struct rpc_message msg = {
- .rpc_argp = path,
+ .rpc_argp = info->dirpath,
.rpc_resp = &result,
};
struct rpc_create_args args = {
- .protocol = protocol,
- .address = addr,
- .addrsize = len,
- .servername = hostname,
+ .protocol = info->protocol,
+ .address = info->sap,
+ .addrsize = info->salen,
+ .servername = info->hostname,
.program = &mnt_program,
- .version = version,
+ .version = info->version,
.authflavor = RPC_AUTH_UNIX,
- .flags = RPC_CLNT_CREATE_INTR,
};
struct rpc_clnt *mnt_clnt;
int status;
dprintk("NFS: sending MNT request for %s:%s\n",
- (hostname ? hostname : "server"), path);
+ (info->hostname ? info->hostname : "server"),
+ info->dirpath);
+
+ if (info->noresvport)
+ args.flags |= RPC_CLNT_CREATE_NONPRIVPORT;
mnt_clnt = rpc_create(&args);
if (IS_ERR(mnt_clnt))
- return PTR_ERR(mnt_clnt);
+ goto out_clnt_err;
- if (version == NFS_MNT3_VERSION)
+ if (info->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);
- return status < 0? status : (result.status? -EACCES : 0);
+
+ 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 = nfs_stat_to_errno(result.status);
+ goto out;
}
/*
* XDR encode/decode functions for MOUNT
*/
-static int
-xdr_encode_dirpath(struct rpc_rqst *req, __be32 *p, const char *path)
+static int xdr_encode_dirpath(struct rpc_rqst *req, __be32 *p,
+ const char *path)
{
p = xdr_encode_string(p, path);
return 0;
}
-static int
-xdr_decode_fhstatus(struct rpc_rqst *req, __be32 *p, struct mnt_fhstatus *res)
+static int xdr_decode_fhstatus(struct rpc_rqst *req, __be32 *p,
+ struct mnt_fhstatus *res)
{
struct nfs_fh *fh = res->fh;
return 0;
}
-static int
-xdr_decode_fhstatus3(struct rpc_rqst *req, __be32 *p, struct mnt_fhstatus *res)
+static int xdr_decode_fhstatus3(struct rpc_rqst *req, __be32 *p,
+ struct mnt_fhstatus *res)
{
struct nfs_fh *fh = res->fh;
+ unsigned size;
if ((res->status = ntohl(*p++)) == 0) {
- int size = ntohl(*p++);
- if (size <= NFS3_FHSIZE) {
+ size = ntohl(*p++);
+ if (size <= NFS3_FHSIZE && size != 0) {
fh->size = size;
memcpy(fh->data, p, size);
} else
#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 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",
+ [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_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_version3 = {
+ .number = 3,
+ .nrprocs = 2,
+ .procs = mnt3_procedures,
};
-static struct rpc_version * mnt_version[] = {
+static struct rpc_version *mnt_version[] = {
NULL,
&mnt_version1,
NULL,
&mnt_version3,
};
-static struct rpc_stat mnt_stats;
+static struct rpc_stat mnt_stats;
-static struct rpc_program mnt_program = {
+static struct rpc_program mnt_program = {
.name = "mount",
.number = NFS_MNT_PROGRAM,
.nrvers = ARRAY_SIZE(mnt_version),
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff