--- /dev/null
+/*
+ * Copyright (C) 2013 Marin Hannache <ipxe@mareo.fr>.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+#include <stdint.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <assert.h>
+#include <errno.h>
+#include <libgen.h>
+#include <byteswap.h>
+#include <ipxe/time.h>
+#include <ipxe/iobuf.h>
+#include <ipxe/open.h>
+#include <ipxe/features.h>
+#include <ipxe/nfs.h>
+#include <ipxe/oncrpc.h>
+#include <ipxe/oncrpc_iob.h>
+#include <ipxe/portmap.h>
+#include <ipxe/mount.h>
+#include <ipxe/settings.h>
+
+/** @file
+ *
+ * Network File System protocol
+ *
+ */
+
+/** NFS LOOKUP procedure */
+#define NFS_LOOKUP 3
+/** NFS READLINK procedure */
+#define NFS_READLINK 5
+/** NFS READ procedure */
+#define NFS_READ 6
+
+/**
+ * Extract a file handle from the beginning of an I/O buffer
+ *
+ * @v io_buf I/O buffer
+ * @v fh File handle
+ * @ret size Size of the data read
+ */
+size_t nfs_iob_get_fh ( struct io_buffer *io_buf, struct nfs_fh *fh ) {
+ fh->size = oncrpc_iob_get_int ( io_buf );
+
+ if ( fh->size > 64 )
+ return sizeof ( uint32_t );
+
+ memcpy (fh->fh, io_buf->data, fh->size );
+ iob_pull ( io_buf, fh->size );
+
+ return fh->size + sizeof ( uint32_t );
+}
+
+/**
+ * Add a file handle to the end of an I/O buffer
+ *
+ * @v io_buf I/O buffer
+ * @v fh File handle
+ * @ret size Size of the data written
+ */
+size_t nfs_iob_add_fh ( struct io_buffer *io_buf, const struct nfs_fh *fh ) {
+ size_t s;
+
+ s = oncrpc_iob_add_int ( io_buf, fh->size );
+ memcpy ( iob_put ( io_buf, fh->size ), &fh->fh, fh->size );
+
+ return s + fh->size;
+}
+
+/**
+ * Send a LOOKUP request
+ *
+ * @v intf Interface to send the request on
+ * @v session ONC RPC session
+ * @v fh The file handle of the the directory
+ * @v filename The file name
+ * @ret rc Return status code
+ */
+int nfs_lookup ( struct interface *intf, struct oncrpc_session *session,
+ const struct nfs_fh *fh, const char *filename ) {
+ struct oncrpc_field fields[] = {
+ ONCRPC_SUBFIELD ( array, fh->size, &fh->fh ),
+ ONCRPC_FIELD ( str, filename ),
+ ONCRPC_FIELD_END,
+ };
+
+ return oncrpc_call ( intf, session, NFS_LOOKUP, fields );
+}
+
+/**
+ * Send a READLINK request
+ *
+ * @v intf Interface to send the request on
+ * @v session ONC RPC session
+ * @v fh The symlink file handle
+ * @ret rc Return status code
+ */
+int nfs_readlink ( struct interface *intf, struct oncrpc_session *session,
+ const struct nfs_fh *fh ) {
+ struct oncrpc_field fields[] = {
+ ONCRPC_SUBFIELD ( array, fh->size, &fh->fh ),
+ ONCRPC_FIELD_END,
+ };
+
+ return oncrpc_call ( intf, session, NFS_READLINK, fields );
+}
+
+/**
+ * Send a READ request
+ *
+ * @v intf Interface to send the request on
+ * @v session ONC RPC session
+ * @v fh The file handle
+ * @v offset Offset
+ * @v count Byte count
+ * @ret rc Return status code
+ */
+int nfs_read ( struct interface *intf, struct oncrpc_session *session,
+ const struct nfs_fh *fh, uint64_t offset, uint32_t count ) {
+ struct oncrpc_field fields[] = {
+ ONCRPC_SUBFIELD ( array, fh->size, &fh->fh ),
+ ONCRPC_FIELD ( int64, offset ),
+ ONCRPC_FIELD ( int32, count ),
+ ONCRPC_FIELD_END,
+ };
+
+ return oncrpc_call ( intf, session, NFS_READ, fields );
+}
+
+/**
+ * Parse a LOOKUP reply
+ *
+ * @v lookup_reply A structure where the data will be saved
+ * @v reply The ONC RPC reply to get data from
+ * @ret rc Return status code
+ */
+int nfs_get_lookup_reply ( struct nfs_lookup_reply *lookup_reply,
+ struct oncrpc_reply *reply ) {
+ if ( ! lookup_reply || ! reply )
+ return -EINVAL;
+
+ lookup_reply->status = oncrpc_iob_get_int ( reply->data );
+ switch ( lookup_reply->status )
+ {
+ case NFS3_OK:
+ break;
+ case NFS3ERR_PERM:
+ return -EPERM;
+ case NFS3ERR_NOENT:
+ return -ENOENT;
+ case NFS3ERR_IO:
+ return -EIO;
+ case NFS3ERR_ACCES:
+ return -EACCES;
+ case NFS3ERR_NOTDIR:
+ return -ENOTDIR;
+ case NFS3ERR_NAMETOOLONG:
+ return -ENAMETOOLONG;
+ case NFS3ERR_STALE:
+ return -ESTALE;
+ case NFS3ERR_BADHANDLE:
+ case NFS3ERR_SERVERFAULT:
+ default:
+ return -EPROTO;
+ }
+
+ nfs_iob_get_fh ( reply->data, &lookup_reply->fh );
+
+ if ( oncrpc_iob_get_int ( reply->data ) == 1 )
+ lookup_reply->ent_type = oncrpc_iob_get_int ( reply->data );
+
+ return 0;
+}
+/**
+ * Parse a READLINK reply
+ *
+ * @v readlink_reply A structure where the data will be saved
+ * @v reply The ONC RPC reply to get data from
+ * @ret rc Return status code
+ */
+int nfs_get_readlink_reply ( struct nfs_readlink_reply *readlink_reply,
+ struct oncrpc_reply *reply ) {
+ if ( ! readlink_reply || ! reply )
+ return -EINVAL;
+
+ readlink_reply->status = oncrpc_iob_get_int ( reply->data );
+ switch ( readlink_reply->status )
+ {
+ case NFS3_OK:
+ break;
+ case NFS3ERR_IO:
+ return -EIO;
+ case NFS3ERR_ACCES:
+ return -EACCES;
+ case NFS3ERR_INVAL:
+ return -EINVAL;
+ case NFS3ERR_NOTSUPP:
+ return -ENOTSUP;
+ case NFS3ERR_STALE:
+ return -ESTALE;
+ case NFS3ERR_BADHANDLE:
+ case NFS3ERR_SERVERFAULT:
+ default:
+ return -EPROTO;
+ }
+
+ if ( oncrpc_iob_get_int ( reply->data ) == 1 )
+ iob_pull ( reply->data, 5 * sizeof ( uint32_t ) +
+ 8 * sizeof ( uint64_t ) );
+
+ readlink_reply->path_len = oncrpc_iob_get_int ( reply->data );
+ readlink_reply->path = reply->data->data;
+
+ return 0;
+}
+
+/**
+ * Parse a READ reply
+ *
+ * @v read_reply A structure where the data will be saved
+ * @v reply The ONC RPC reply to get data from
+ * @ret rc Return status code
+ */
+int nfs_get_read_reply ( struct nfs_read_reply *read_reply,
+ struct oncrpc_reply *reply ) {
+ if ( ! read_reply || ! reply )
+ return -EINVAL;
+
+ read_reply->status = oncrpc_iob_get_int ( reply->data );
+ switch ( read_reply->status )
+ {
+ case NFS3_OK:
+ break;
+ case NFS3ERR_PERM:
+ return -EPERM;
+ case NFS3ERR_NOENT:
+ return -ENOENT;
+ case NFS3ERR_IO:
+ return -EIO;
+ case NFS3ERR_NXIO:
+ return -ENXIO;
+ case NFS3ERR_ACCES:
+ return -EACCES;
+ case NFS3ERR_INVAL:
+ return -EINVAL;
+ case NFS3ERR_STALE:
+ return -ESTALE;
+ case NFS3ERR_BADHANDLE:
+ case NFS3ERR_SERVERFAULT:
+ default:
+ return -EPROTO;
+ }
+
+ if ( oncrpc_iob_get_int ( reply->data ) == 1 )
+ {
+ iob_pull ( reply->data, 5 * sizeof ( uint32_t ) );
+ read_reply->filesize = oncrpc_iob_get_int64 ( reply->data );
+ iob_pull ( reply->data, 7 * sizeof ( uint64_t ) );
+ }
+
+ read_reply->count = oncrpc_iob_get_int ( reply->data );
+ read_reply->eof = oncrpc_iob_get_int ( reply->data );
+ read_reply->data_len = oncrpc_iob_get_int ( reply->data );
+ read_reply->data = reply->data->data;
+
+ if ( read_reply->count != read_reply->data_len )
+ return -EPROTO;
+
+ return 0;
+}
+
Code Review / kvmfornfv.git / blobdiff