| /* |
| * fs/nfs/nfs4xdr.c |
| * |
| * Client-side XDR for NFSv4. |
| * |
| * Copyright (c) 2002 The Regents of the University of Michigan. |
| * All rights reserved. |
| * |
| * Kendrick Smith <kmsmith@umich.edu> |
| * Andy Adamson <andros@umich.edu> |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. Neither the name of the University nor the names of its |
| * contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include <linux/param.h> |
| #include <linux/time.h> |
| #include <linux/mm.h> |
| #include <linux/errno.h> |
| #include <linux/string.h> |
| #include <linux/in.h> |
| #include <linux/pagemap.h> |
| #include <linux/proc_fs.h> |
| #include <linux/kdev_t.h> |
| #include <linux/sunrpc/clnt.h> |
| #include <linux/sunrpc/msg_prot.h> |
| #include <linux/nfs.h> |
| #include <linux/nfs4.h> |
| #include <linux/nfs_fs.h> |
| #include <linux/nfs_idmap.h> |
| #include "nfs4_fs.h" |
| #include "internal.h" |
| #include "pnfs.h" |
| |
| #define NFSDBG_FACILITY NFSDBG_XDR |
| |
| /* Mapping from NFS error code to "errno" error code. */ |
| #define errno_NFSERR_IO EIO |
| |
| static int nfs4_stat_to_errno(int); |
| |
| /* NFSv4 COMPOUND tags are only wanted for debugging purposes */ |
| #ifdef DEBUG |
| #define NFS4_MAXTAGLEN 20 |
| #else |
| #define NFS4_MAXTAGLEN 0 |
| #endif |
| |
| /* lock,open owner id: |
| * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2) |
| */ |
| #define open_owner_id_maxsz (1 + 4) |
| #define lock_owner_id_maxsz (1 + 4) |
| #define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) |
| #define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2)) |
| #define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2)) |
| #define op_encode_hdr_maxsz (1) |
| #define op_decode_hdr_maxsz (2) |
| #define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE)) |
| #define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE)) |
| #define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE)) |
| #define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE)) |
| #define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \ |
| (NFS4_FHSIZE >> 2)) |
| #define decode_putfh_maxsz (op_decode_hdr_maxsz) |
| #define encode_putrootfh_maxsz (op_encode_hdr_maxsz) |
| #define decode_putrootfh_maxsz (op_decode_hdr_maxsz) |
| #define encode_getfh_maxsz (op_encode_hdr_maxsz) |
| #define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \ |
| ((3+NFS4_FHSIZE) >> 2)) |
| #define nfs4_fattr_bitmap_maxsz 3 |
| #define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz) |
| #define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2)) |
| #define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2)) |
| #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) |
| #define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) |
| /* This is based on getfattr, which uses the most attributes: */ |
| #define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \ |
| 3 + 3 + 3 + nfs4_owner_maxsz + nfs4_group_maxsz)) |
| #define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \ |
| nfs4_fattr_value_maxsz) |
| #define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz) |
| #define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \ |
| 1 + 2 + 1 + \ |
| nfs4_owner_maxsz + \ |
| nfs4_group_maxsz + \ |
| 4 + 4) |
| #define encode_savefh_maxsz (op_encode_hdr_maxsz) |
| #define decode_savefh_maxsz (op_decode_hdr_maxsz) |
| #define encode_restorefh_maxsz (op_encode_hdr_maxsz) |
| #define decode_restorefh_maxsz (op_decode_hdr_maxsz) |
| #define encode_fsinfo_maxsz (encode_getattr_maxsz) |
| #define decode_fsinfo_maxsz (op_decode_hdr_maxsz + 11) |
| #define encode_renew_maxsz (op_encode_hdr_maxsz + 3) |
| #define decode_renew_maxsz (op_decode_hdr_maxsz) |
| #define encode_setclientid_maxsz \ |
| (op_encode_hdr_maxsz + \ |
| XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \ |
| XDR_QUADLEN(NFS4_SETCLIENTID_NAMELEN) + \ |
| 1 /* sc_prog */ + \ |
| XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \ |
| XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \ |
| 1) /* sc_cb_ident */ |
| #define decode_setclientid_maxsz \ |
| (op_decode_hdr_maxsz + \ |
| 2 + \ |
| 1024) /* large value for CLID_INUSE */ |
| #define encode_setclientid_confirm_maxsz \ |
| (op_encode_hdr_maxsz + \ |
| 3 + (NFS4_VERIFIER_SIZE >> 2)) |
| #define decode_setclientid_confirm_maxsz \ |
| (op_decode_hdr_maxsz) |
| #define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz) |
| #define decode_lookup_maxsz (op_decode_hdr_maxsz) |
| #define encode_share_access_maxsz \ |
| (2) |
| #define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz) |
| #define encode_opentype_maxsz (1 + encode_createmode_maxsz) |
| #define encode_claim_null_maxsz (1 + nfs4_name_maxsz) |
| #define encode_open_maxsz (op_encode_hdr_maxsz + \ |
| 2 + encode_share_access_maxsz + 2 + \ |
| open_owner_id_maxsz + \ |
| encode_opentype_maxsz + \ |
| encode_claim_null_maxsz) |
| #define decode_ace_maxsz (3 + nfs4_owner_maxsz) |
| #define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \ |
| decode_ace_maxsz) |
| #define decode_change_info_maxsz (5) |
| #define decode_open_maxsz (op_decode_hdr_maxsz + \ |
| decode_stateid_maxsz + \ |
| decode_change_info_maxsz + 1 + \ |
| nfs4_fattr_bitmap_maxsz + \ |
| decode_delegation_maxsz) |
| #define encode_open_confirm_maxsz \ |
| (op_encode_hdr_maxsz + \ |
| encode_stateid_maxsz + 1) |
| #define decode_open_confirm_maxsz \ |
| (op_decode_hdr_maxsz + \ |
| decode_stateid_maxsz) |
| #define encode_open_downgrade_maxsz \ |
| (op_encode_hdr_maxsz + \ |
| encode_stateid_maxsz + 1 + \ |
| encode_share_access_maxsz) |
| #define decode_open_downgrade_maxsz \ |
| (op_decode_hdr_maxsz + \ |
| decode_stateid_maxsz) |
| #define encode_close_maxsz (op_encode_hdr_maxsz + \ |
| 1 + encode_stateid_maxsz) |
| #define decode_close_maxsz (op_decode_hdr_maxsz + \ |
| decode_stateid_maxsz) |
| #define encode_setattr_maxsz (op_encode_hdr_maxsz + \ |
| encode_stateid_maxsz + \ |
| encode_attrs_maxsz) |
| #define decode_setattr_maxsz (op_decode_hdr_maxsz + \ |
| nfs4_fattr_bitmap_maxsz) |
| #define encode_read_maxsz (op_encode_hdr_maxsz + \ |
| encode_stateid_maxsz + 3) |
| #define decode_read_maxsz (op_decode_hdr_maxsz + 2) |
| #define encode_readdir_maxsz (op_encode_hdr_maxsz + \ |
| 2 + encode_verifier_maxsz + 5) |
| #define decode_readdir_maxsz (op_decode_hdr_maxsz + \ |
| decode_verifier_maxsz) |
| #define encode_readlink_maxsz (op_encode_hdr_maxsz) |
| #define decode_readlink_maxsz (op_decode_hdr_maxsz + 1) |
| #define encode_write_maxsz (op_encode_hdr_maxsz + \ |
| encode_stateid_maxsz + 4) |
| #define decode_write_maxsz (op_decode_hdr_maxsz + \ |
| 2 + decode_verifier_maxsz) |
| #define encode_commit_maxsz (op_encode_hdr_maxsz + 3) |
| #define decode_commit_maxsz (op_decode_hdr_maxsz + \ |
| decode_verifier_maxsz) |
| #define encode_remove_maxsz (op_encode_hdr_maxsz + \ |
| nfs4_name_maxsz) |
| #define decode_remove_maxsz (op_decode_hdr_maxsz + \ |
| decode_change_info_maxsz) |
| #define encode_rename_maxsz (op_encode_hdr_maxsz + \ |
| 2 * nfs4_name_maxsz) |
| #define decode_rename_maxsz (op_decode_hdr_maxsz + \ |
| decode_change_info_maxsz + \ |
| decode_change_info_maxsz) |
| #define encode_link_maxsz (op_encode_hdr_maxsz + \ |
| nfs4_name_maxsz) |
| #define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz) |
| #define encode_lockowner_maxsz (7) |
| #define encode_lock_maxsz (op_encode_hdr_maxsz + \ |
| 7 + \ |
| 1 + encode_stateid_maxsz + 1 + \ |
| encode_lockowner_maxsz) |
| #define decode_lock_denied_maxsz \ |
| (8 + decode_lockowner_maxsz) |
| #define decode_lock_maxsz (op_decode_hdr_maxsz + \ |
| decode_lock_denied_maxsz) |
| #define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \ |
| encode_lockowner_maxsz) |
| #define decode_lockt_maxsz (op_decode_hdr_maxsz + \ |
| decode_lock_denied_maxsz) |
| #define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \ |
| encode_stateid_maxsz + \ |
| 4) |
| #define decode_locku_maxsz (op_decode_hdr_maxsz + \ |
| decode_stateid_maxsz) |
| #define encode_release_lockowner_maxsz \ |
| (op_encode_hdr_maxsz + \ |
| encode_lockowner_maxsz) |
| #define decode_release_lockowner_maxsz \ |
| (op_decode_hdr_maxsz) |
| #define encode_access_maxsz (op_encode_hdr_maxsz + 1) |
| #define decode_access_maxsz (op_decode_hdr_maxsz + 2) |
| #define encode_symlink_maxsz (op_encode_hdr_maxsz + \ |
| 1 + nfs4_name_maxsz + \ |
| 1 + \ |
| nfs4_fattr_maxsz) |
| #define decode_symlink_maxsz (op_decode_hdr_maxsz + 8) |
| #define encode_create_maxsz (op_encode_hdr_maxsz + \ |
| 1 + 2 + nfs4_name_maxsz + \ |
| encode_attrs_maxsz) |
| #define decode_create_maxsz (op_decode_hdr_maxsz + \ |
| decode_change_info_maxsz + \ |
| nfs4_fattr_bitmap_maxsz) |
| #define encode_statfs_maxsz (encode_getattr_maxsz) |
| #define decode_statfs_maxsz (decode_getattr_maxsz) |
| #define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4) |
| #define decode_delegreturn_maxsz (op_decode_hdr_maxsz) |
| #define encode_getacl_maxsz (encode_getattr_maxsz) |
| #define decode_getacl_maxsz (op_decode_hdr_maxsz + \ |
| nfs4_fattr_bitmap_maxsz + 1) |
| #define encode_setacl_maxsz (op_encode_hdr_maxsz + \ |
| encode_stateid_maxsz + 3) |
| #define decode_setacl_maxsz (decode_setattr_maxsz) |
| #define encode_fs_locations_maxsz \ |
| (encode_getattr_maxsz) |
| #define decode_fs_locations_maxsz \ |
| (0) |
| |
| #if defined(CONFIG_NFS_V4_1) |
| #define NFS4_MAX_MACHINE_NAME_LEN (64) |
| |
| #define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \ |
| encode_verifier_maxsz + \ |
| 1 /* co_ownerid.len */ + \ |
| XDR_QUADLEN(NFS4_EXCHANGE_ID_LEN) + \ |
| 1 /* flags */ + \ |
| 1 /* spa_how */ + \ |
| 0 /* SP4_NONE (for now) */ + \ |
| 1 /* zero implemetation id array */) |
| #define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \ |
| 2 /* eir_clientid */ + \ |
| 1 /* eir_sequenceid */ + \ |
| 1 /* eir_flags */ + \ |
| 1 /* spr_how */ + \ |
| 0 /* SP4_NONE (for now) */ + \ |
| 2 /* eir_server_owner.so_minor_id */ + \ |
| /* eir_server_owner.so_major_id<> */ \ |
| XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \ |
| /* eir_server_scope<> */ \ |
| XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \ |
| 1 /* eir_server_impl_id array length */ + \ |
| 0 /* ignored eir_server_impl_id contents */) |
| #define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */) |
| #define decode_channel_attrs_maxsz (6 + \ |
| 1 /* ca_rdma_ird.len */ + \ |
| 1 /* ca_rdma_ird */) |
| #define encode_create_session_maxsz (op_encode_hdr_maxsz + \ |
| 2 /* csa_clientid */ + \ |
| 1 /* csa_sequence */ + \ |
| 1 /* csa_flags */ + \ |
| encode_channel_attrs_maxsz + \ |
| encode_channel_attrs_maxsz + \ |
| 1 /* csa_cb_program */ + \ |
| 1 /* csa_sec_parms.len (1) */ + \ |
| 1 /* cb_secflavor (AUTH_SYS) */ + \ |
| 1 /* stamp */ + \ |
| 1 /* machinename.len */ + \ |
| XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \ |
| 1 /* uid */ + \ |
| 1 /* gid */ + \ |
| 1 /* gids.len (0) */) |
| #define decode_create_session_maxsz (op_decode_hdr_maxsz + \ |
| XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \ |
| 1 /* csr_sequence */ + \ |
| 1 /* csr_flags */ + \ |
| decode_channel_attrs_maxsz + \ |
| decode_channel_attrs_maxsz) |
| #define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4) |
| #define decode_destroy_session_maxsz (op_decode_hdr_maxsz) |
| #define encode_sequence_maxsz (op_encode_hdr_maxsz + \ |
| XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4) |
| #define decode_sequence_maxsz (op_decode_hdr_maxsz + \ |
| XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5) |
| #define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4) |
| #define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4) |
| #define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + 4 + \ |
| XDR_QUADLEN(NFS4_DEVICEID4_SIZE)) |
| #define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \ |
| 1 /* layout type */ + \ |
| 1 /* opaque devaddr4 length */ + \ |
| /* devaddr4 payload is read into page */ \ |
| 1 /* notification bitmap length */ + \ |
| 1 /* notification bitmap */) |
| #define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \ |
| encode_stateid_maxsz) |
| #define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \ |
| decode_stateid_maxsz + \ |
| XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE)) |
| #else /* CONFIG_NFS_V4_1 */ |
| #define encode_sequence_maxsz 0 |
| #define decode_sequence_maxsz 0 |
| #endif /* CONFIG_NFS_V4_1 */ |
| |
| #define NFS4_enc_compound_sz (1024) /* XXX: large enough? */ |
| #define NFS4_dec_compound_sz (1024) /* XXX: large enough? */ |
| #define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \ |
| encode_sequence_maxsz + \ |
| encode_putfh_maxsz + \ |
| encode_read_maxsz) |
| #define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \ |
| decode_sequence_maxsz + \ |
| decode_putfh_maxsz + \ |
| decode_read_maxsz) |
| #define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \ |
| encode_sequence_maxsz + \ |
| encode_putfh_maxsz + \ |
| encode_readlink_maxsz) |
| #define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \ |
| decode_sequence_maxsz + \ |
| decode_putfh_maxsz + \ |
| decode_readlink_maxsz) |
| #define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \ |
| encode_sequence_maxsz + \ |
| encode_putfh_maxsz + \ |
| encode_readdir_maxsz) |
| #define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \ |
| decode_sequence_maxsz + \ |
| decode_putfh_maxsz + \ |
| decode_readdir_maxsz) |
| #define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \ |
| encode_sequence_maxsz + \ |
| encode_putfh_maxsz + \ |
| encode_write_maxsz + \ |
| encode_getattr_maxsz) |
| #define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \ |
| decode_sequence_maxsz + \ |
| decode_putfh_maxsz + \ |
| decode_write_maxsz + \ |
| decode_getattr_maxsz) |
| #define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \ |
| encode_sequence_maxsz + \ |
| encode_putfh_maxsz + \ |
| encode_commit_maxsz + \ |
| encode_getattr_maxsz) |
| #define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \ |
| decode_sequence_maxsz + \ |
| decode_putfh_maxsz + \ |
| decode_commit_maxsz + \ |
| decode_getattr_maxsz) |
| #define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \ |
| encode_sequence_maxsz + \ |
| encode_putfh_maxsz + \ |
| encode_savefh_maxsz + \ |
| encode_open_maxsz + \ |
| encode_getfh_maxsz + \ |
| encode_getattr_maxsz + \ |
| encode_restorefh_maxsz + \ |
| encode_getattr_maxsz) |
| #define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \ |
| decode_sequence_maxsz + \ |
| decode_putfh_maxsz + \ |
| decode_savefh_maxsz + \ |
| decode_open_maxsz + \ |
| decode_getfh_maxsz + \ |
| decode_getattr_maxsz + \ |
| decode_restorefh_maxsz + \ |
| decode_getattr_maxsz) |
| #define NFS4_enc_open_confirm_sz \ |
| (compound_encode_hdr_maxsz + \ |
| encode_putfh_maxsz + \ |
| encode_open_confirm_maxsz) |
| #define NFS4_dec_open_confirm_sz \ |
| (compound_decode_hdr_maxsz + \ |
| decode_putfh_maxsz + \ |
| decode_open_confirm_maxsz) |
| #define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \ |
| encode_sequence_maxsz + \ |
| encode_putfh_maxsz + \ |
| encode_open_maxsz + \ |
| encode_getattr_maxsz) |
| #define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \ |
| decode_sequence_maxsz + \ |
| decode_putfh_maxsz + \ |
| decode_open_maxsz + \ |
| decode_getattr_maxsz) |
| #define NFS4_enc_open_downgrade_sz \ |
| (compound_encode_hdr_maxsz + \ |
| encode_sequence_maxsz + \ |
| encode_putfh_maxsz + \ |
| encode_open_downgrade_maxsz + \ |
| encode_getattr_maxsz) |
| #define NFS4_dec_open_downgrade_sz \ |
| (compound_decode_hdr_maxsz + \ |
| decode_sequence_maxsz + \ |
| decode_putfh_maxsz + \ |
| decode_open_downgrade_maxsz + \ |
| decode_getattr_maxsz) |
| #define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \ |
| encode_sequence_maxsz + \ |
| encode_putfh_maxsz + \ |
| encode_close_maxsz + \ |
| encode_getattr_maxsz) |
| #define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \ |
| decode_sequence_maxsz + \ |
| decode_putfh_maxsz + \ |
| decode_close_maxsz + \ |
| decode_getattr_maxsz) |
| #define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \ |
| encode_sequence_maxsz + \ |
| encode_putfh_maxsz + \ |
| encode_setattr_maxsz + \ |
| encode_getattr_maxsz) |
| #define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \ |
| decode_sequence_maxsz + \ |
| decode_putfh_maxsz + \ |
| decode_setattr_maxsz + \ |
| decode_getattr_maxsz) |
| #define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \ |
| encode_sequence_maxsz + \ |
| encode_putfh_maxsz + \ |
| encode_fsinfo_maxsz) |
| #define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \ |
| decode_sequence_maxsz + \ |
| decode_putfh_maxsz + \ |
| decode_fsinfo_maxsz) |
| #define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \ |
| encode_renew_maxsz) |
| #define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \ |
| decode_renew_maxsz) |
| #define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \ |
| encode_setclientid_maxsz) |
| #define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \ |
| decode_setclientid_maxsz) |
| #define NFS4_enc_setclientid_confirm_sz \ |
| (compound_encode_hdr_maxsz + \ |
| encode_setclientid_confirm_maxsz + \ |
| encode_putrootfh_maxsz + \ |
| encode_fsinfo_maxsz) |
| #define NFS4_dec_setclientid_confirm_sz \ |
| (compound_decode_hdr_maxsz + \ |
| decode_setclientid_confirm_maxsz + \ |
| decode_putrootfh_maxsz + \ |
| decode_fsinfo_maxsz) |
| #define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \ |
| encode_sequence_maxsz + \ |
| encode_putfh_maxsz + \ |
| encode_lock_maxsz) |
| #define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \ |
| decode_sequence_maxsz + \ |
| decode_putfh_maxsz + \ |
| decode_lock_maxsz) |
| #define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \ |
| encode_sequence_maxsz + \ |
| encode_putfh_maxsz + \ |
| encode_lockt_maxsz) |
| #define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \ |
| decode_sequence_maxsz + \ |
| decode_putfh_maxsz + \ |
| decode_lockt_maxsz) |
| #define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \ |
| encode_sequence_maxsz + \ |
| encode_putfh_maxsz + \ |
| encode_locku_maxsz) |
| #define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \ |
| decode_sequence_maxsz + \ |
| decode_putfh_maxsz + \ |
| decode_locku_maxsz) |
| #define NFS4_enc_release_lockowner_sz \ |
| (compound_encode_hdr_maxsz + \ |
| encode_lockowner_maxsz) |
| #define NFS4_dec_release_lockowner_sz \ |
| (compound_decode_hdr_maxsz + \ |
| decode_lockowner_maxsz) |
| #define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \ |
| encode_sequence_maxsz + \ |
| encode_putfh_maxsz + \ |
| encode_access_maxsz + \ |
| encode_getattr_maxsz) |
| #define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \ |
| decode_sequence_maxsz + \ |
| decode_putfh_maxsz + \ |
| decode_access_maxsz + \ |
| decode_getattr_maxsz) |
| #define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \ |
| encode_sequence_maxsz + \ |
| encode_putfh_maxsz + \ |
| encode_getattr_maxsz) |
| #define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \ |
| decode_sequence_maxsz + \ |
| decode_putfh_maxsz + \ |
| decode_getattr_maxsz) |
| #define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \ |
| encode_sequence_maxsz + \ |
| encode_putfh_maxsz + \ |
| encode_lookup_maxsz + \ |
| encode_getattr_maxsz + \ |
| encode_getfh_maxsz) |
| #define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \ |
| decode_sequence_maxsz + \ |
| decode_putfh_maxsz + \ |
| decode_lookup_maxsz + \ |
| decode_getattr_maxsz + \ |
| decode_getfh_maxsz) |
| #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \ |
| encode_sequence_maxsz + \ |
| encode_putrootfh_maxsz + \ |
| encode_getattr_maxsz + \ |
| encode_getfh_maxsz) |
| #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \ |
| decode_sequence_maxsz + \ |
| decode_putrootfh_maxsz + \ |
| decode_getattr_maxsz + \ |
| decode_getfh_maxsz) |
| #define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \ |
| encode_sequence_maxsz + \ |
| encode_putfh_maxsz + \ |
| encode_remove_maxsz + \ |
| encode_getattr_maxsz) |
| #define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \ |
| decode_sequence_maxsz + \ |
| decode_putfh_maxsz + \ |
| decode_remove_maxsz + \ |
| decode_getattr_maxsz) |
| #define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \ |
| encode_sequence_maxsz + \ |
| encode_putfh_maxsz + \ |
| encode_savefh_maxsz + \ |
| encode_putfh_maxsz + \ |
| encode_rename_maxsz + \ |
| encode_getattr_maxsz + \ |
| encode_restorefh_maxsz + \ |
| encode_getattr_maxsz) |
| #define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \ |
| decode_sequence_maxsz + \ |
| decode_putfh_maxsz + \ |
| decode_savefh_maxsz + \ |
| decode_putfh_maxsz + \ |
| decode_rename_maxsz + \ |
| decode_getattr_maxsz + \ |
| decode_restorefh_maxsz + \ |
| decode_getattr_maxsz) |
| #define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \ |
| encode_sequence_maxsz + \ |
| encode_putfh_maxsz + \ |
| encode_savefh_maxsz + \ |
| encode_putfh_maxsz + \ |
| encode_link_maxsz + \ |
| decode_getattr_maxsz + \ |
| encode_restorefh_maxsz + \ |
| decode_getattr_maxsz) |
| #define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \ |
| decode_sequence_maxsz + \ |
| decode_putfh_maxsz + \ |
| decode_savefh_maxsz + \ |
| decode_putfh_maxsz + \ |
| decode_link_maxsz + \ |
| decode_getattr_maxsz + \ |
| decode_restorefh_maxsz + \ |
| decode_getattr_maxsz) |
| #define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \ |
| encode_sequence_maxsz + \ |
| encode_putfh_maxsz + \ |
| encode_symlink_maxsz + \ |
| encode_getattr_maxsz + \ |
| encode_getfh_maxsz) |
| #define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \ |
| decode_sequence_maxsz + \ |
| decode_putfh_maxsz + \ |
| decode_symlink_maxsz + \ |
| decode_getattr_maxsz + \ |
| decode_getfh_maxsz) |
| #define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \ |
| encode_sequence_maxsz + \ |
| encode_putfh_maxsz + \ |
| encode_savefh_maxsz + \ |
| encode_create_maxsz + \ |
| encode_getfh_maxsz + \ |
| encode_getattr_maxsz + \ |
| encode_restorefh_maxsz + \ |
| encode_getattr_maxsz) |
| #define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \ |
| decode_sequence_maxsz + \ |
| decode_putfh_maxsz + \ |
| decode_savefh_maxsz + \ |
| decode_create_maxsz + \ |
| decode_getfh_maxsz + \ |
| decode_getattr_maxsz + \ |
| decode_restorefh_maxsz + \ |
| decode_getattr_maxsz) |
| #define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \ |
| encode_sequence_maxsz + \ |
| encode_putfh_maxsz + \ |
| encode_getattr_maxsz) |
| #define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \ |
| decode_sequence_maxsz + \ |
| decode_putfh_maxsz + \ |
| decode_getattr_maxsz) |
| #define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \ |
| encode_sequence_maxsz + \ |
| encode_putfh_maxsz + \ |
| encode_statfs_maxsz) |
| #define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \ |
| decode_sequence_maxsz + \ |
| decode_putfh_maxsz + \ |
| decode_statfs_maxsz) |
| #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \ |
| encode_sequence_maxsz + \ |
| encode_putfh_maxsz + \ |
| encode_getattr_maxsz) |
| #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \ |
| decode_sequence_maxsz + \ |
| decode_putfh_maxsz + \ |
| decode_getattr_maxsz) |
| #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \ |
| encode_sequence_maxsz + \ |
| encode_putfh_maxsz + \ |
| encode_delegreturn_maxsz + \ |
| encode_getattr_maxsz) |
| #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \ |
| decode_sequence_maxsz + \ |
| decode_delegreturn_maxsz + \ |
| decode_getattr_maxsz) |
| #define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \ |
| encode_sequence_maxsz + \ |
| encode_putfh_maxsz + \ |
| encode_getacl_maxsz) |
| #define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \ |
| decode_sequence_maxsz + \ |
| decode_putfh_maxsz + \ |
| decode_getacl_maxsz) |
| #define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \ |
| encode_sequence_maxsz + \ |
| encode_putfh_maxsz + \ |
| encode_setacl_maxsz) |
| #define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \ |
| decode_sequence_maxsz + \ |
| decode_putfh_maxsz + \ |
| decode_setacl_maxsz) |
| #define NFS4_enc_fs_locations_sz \ |
| (compound_encode_hdr_maxsz + \ |
| encode_sequence_maxsz + \ |
| encode_putfh_maxsz + \ |
| encode_lookup_maxsz + \ |
| encode_fs_locations_maxsz) |
| #define NFS4_dec_fs_locations_sz \ |
| (compound_decode_hdr_maxsz + \ |
| decode_sequence_maxsz + \ |
| decode_putfh_maxsz + \ |
| decode_lookup_maxsz + \ |
| decode_fs_locations_maxsz) |
| #if defined(CONFIG_NFS_V4_1) |
| #define NFS4_enc_exchange_id_sz \ |
| (compound_encode_hdr_maxsz + \ |
| encode_exchange_id_maxsz) |
| #define NFS4_dec_exchange_id_sz \ |
| (compound_decode_hdr_maxsz + \ |
| decode_exchange_id_maxsz) |
| #define NFS4_enc_create_session_sz \ |
| (compound_encode_hdr_maxsz + \ |
| encode_create_session_maxsz) |
| #define NFS4_dec_create_session_sz \ |
| (compound_decode_hdr_maxsz + \ |
| decode_create_session_maxsz) |
| #define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \ |
| encode_destroy_session_maxsz) |
| #define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \ |
| decode_destroy_session_maxsz) |
| #define NFS4_enc_sequence_sz \ |
| (compound_decode_hdr_maxsz + \ |
| encode_sequence_maxsz) |
| #define NFS4_dec_sequence_sz \ |
| (compound_decode_hdr_maxsz + \ |
| decode_sequence_maxsz) |
| #define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \ |
| encode_sequence_maxsz + \ |
| encode_putrootfh_maxsz + \ |
| encode_fsinfo_maxsz) |
| #define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \ |
| decode_sequence_maxsz + \ |
| decode_putrootfh_maxsz + \ |
| decode_fsinfo_maxsz) |
| #define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \ |
| encode_sequence_maxsz + \ |
| encode_reclaim_complete_maxsz) |
| #define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \ |
| decode_sequence_maxsz + \ |
| decode_reclaim_complete_maxsz) |
| #define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \ |
| encode_sequence_maxsz +\ |
| encode_getdeviceinfo_maxsz) |
| #define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \ |
| decode_sequence_maxsz + \ |
| decode_getdeviceinfo_maxsz) |
| #define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \ |
| encode_sequence_maxsz + \ |
| encode_putfh_maxsz + \ |
| encode_layoutget_maxsz) |
| #define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \ |
| decode_sequence_maxsz + \ |
| decode_putfh_maxsz + \ |
| decode_layoutget_maxsz) |
| |
| const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH + |
| compound_encode_hdr_maxsz + |
| encode_sequence_maxsz + |
| encode_putfh_maxsz + |
| encode_getattr_maxsz) * |
| XDR_UNIT); |
| |
| const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH + |
| compound_decode_hdr_maxsz + |
| decode_sequence_maxsz + |
| decode_putfh_maxsz) * |
| XDR_UNIT); |
| #endif /* CONFIG_NFS_V4_1 */ |
| |
| static const umode_t nfs_type2fmt[] = { |
| [NF4BAD] = 0, |
| [NF4REG] = S_IFREG, |
| [NF4DIR] = S_IFDIR, |
| [NF4BLK] = S_IFBLK, |
| [NF4CHR] = S_IFCHR, |
| [NF4LNK] = S_IFLNK, |
| [NF4SOCK] = S_IFSOCK, |
| [NF4FIFO] = S_IFIFO, |
| [NF4ATTRDIR] = 0, |
| [NF4NAMEDATTR] = 0, |
| }; |
| |
| struct compound_hdr { |
| int32_t status; |
| uint32_t nops; |
| __be32 * nops_p; |
| uint32_t taglen; |
| char * tag; |
| uint32_t replen; /* expected reply words */ |
| u32 minorversion; |
| }; |
| |
| static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes) |
| { |
| __be32 *p = xdr_reserve_space(xdr, nbytes); |
| BUG_ON(!p); |
| return p; |
| } |
| |
| static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str) |
| { |
| __be32 *p; |
| |
| p = xdr_reserve_space(xdr, 4 + len); |
| BUG_ON(p == NULL); |
| xdr_encode_opaque(p, str, len); |
| } |
| |
| static void encode_compound_hdr(struct xdr_stream *xdr, |
| struct rpc_rqst *req, |
| struct compound_hdr *hdr) |
| { |
| __be32 *p; |
| struct rpc_auth *auth = req->rq_cred->cr_auth; |
| |
| /* initialize running count of expected bytes in reply. |
| * NOTE: the replied tag SHOULD be the same is the one sent, |
| * but this is not required as a MUST for the server to do so. */ |
| hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen; |
| |
| dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag); |
| BUG_ON(hdr->taglen > NFS4_MAXTAGLEN); |
| p = reserve_space(xdr, 4 + hdr->taglen + 8); |
| p = xdr_encode_opaque(p, hdr->tag, hdr->taglen); |
| *p++ = cpu_to_be32(hdr->minorversion); |
| hdr->nops_p = p; |
| *p = cpu_to_be32(hdr->nops); |
| } |
| |
| static void encode_nops(struct compound_hdr *hdr) |
| { |
| BUG_ON(hdr->nops > NFS4_MAX_OPS); |
| *hdr->nops_p = htonl(hdr->nops); |
| } |
| |
| static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf) |
| { |
| __be32 *p; |
| |
| p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE); |
| BUG_ON(p == NULL); |
| xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE); |
| } |
| |
| static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server) |
| { |
| char owner_name[IDMAP_NAMESZ]; |
| char owner_group[IDMAP_NAMESZ]; |
| int owner_namelen = 0; |
| int owner_grouplen = 0; |
| __be32 *p; |
| __be32 *q; |
| int len; |
| uint32_t bmval0 = 0; |
| uint32_t bmval1 = 0; |
| |
| /* |
| * We reserve enough space to write the entire attribute buffer at once. |
| * In the worst-case, this would be |
| * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime) |
| * = 36 bytes, plus any contribution from variable-length fields |
| * such as owner/group. |
| */ |
| len = 16; |
| |
| /* Sigh */ |
| if (iap->ia_valid & ATTR_SIZE) |
| len += 8; |
| if (iap->ia_valid & ATTR_MODE) |
| len += 4; |
| if (iap->ia_valid & ATTR_UID) { |
| owner_namelen = nfs_map_uid_to_name(server->nfs_client, iap->ia_uid, owner_name, IDMAP_NAMESZ); |
| if (owner_namelen < 0) { |
| dprintk("nfs: couldn't resolve uid %d to string\n", |
| iap->ia_uid); |
| /* XXX */ |
| strcpy(owner_name, "nobody"); |
| owner_namelen = sizeof("nobody") - 1; |
| /* goto out; */ |
| } |
| len += 4 + (XDR_QUADLEN(owner_namelen) << 2); |
| } |
| if (iap->ia_valid & ATTR_GID) { |
| owner_grouplen = nfs_map_gid_to_group(server->nfs_client, iap->ia_gid, owner_group, IDMAP_NAMESZ); |
| if (owner_grouplen < 0) { |
| dprintk("nfs: couldn't resolve gid %d to string\n", |
| iap->ia_gid); |
| strcpy(owner_group, "nobody"); |
| owner_grouplen = sizeof("nobody") - 1; |
| /* goto out; */ |
| } |
| len += 4 + (XDR_QUADLEN(owner_grouplen) << 2); |
| } |
| if (iap->ia_valid & ATTR_ATIME_SET) |
| len += 16; |
| else if (iap->ia_valid & ATTR_ATIME) |
| len += 4; |
| if (iap->ia_valid & ATTR_MTIME_SET) |
| len += 16; |
| else if (iap->ia_valid & ATTR_MTIME) |
| len += 4; |
| p = reserve_space(xdr, len); |
| |
| /* |
| * We write the bitmap length now, but leave the bitmap and the attribute |
| * buffer length to be backfilled at the end of this routine. |
| */ |
| *p++ = cpu_to_be32(2); |
| q = p; |
| p += 3; |
| |
| if (iap->ia_valid & ATTR_SIZE) { |
| bmval0 |= FATTR4_WORD0_SIZE; |
| p = xdr_encode_hyper(p, iap->ia_size); |
| } |
| if (iap->ia_valid & ATTR_MODE) { |
| bmval1 |= FATTR4_WORD1_MODE; |
| *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO); |
| } |
| if (iap->ia_valid & ATTR_UID) { |
| bmval1 |= FATTR4_WORD1_OWNER; |
| p = xdr_encode_opaque(p, owner_name, owner_namelen); |
| } |
| if (iap->ia_valid & ATTR_GID) { |
| bmval1 |= FATTR4_WORD1_OWNER_GROUP; |
| p = xdr_encode_opaque(p, owner_group, owner_grouplen); |
| } |
| if (iap->ia_valid & ATTR_ATIME_SET) { |
| bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET; |
| *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME); |
| *p++ = cpu_to_be32(0); |
| *p++ = cpu_to_be32(iap->ia_atime.tv_sec); |
| *p++ = cpu_to_be32(iap->ia_atime.tv_nsec); |
| } |
| else if (iap->ia_valid & ATTR_ATIME) { |
| bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET; |
| *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME); |
| } |
| if (iap->ia_valid & ATTR_MTIME_SET) { |
| bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET; |
| *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME); |
| *p++ = cpu_to_be32(0); |
| *p++ = cpu_to_be32(iap->ia_mtime.tv_sec); |
| *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec); |
| } |
| else if (iap->ia_valid & ATTR_MTIME) { |
| bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET; |
| *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME); |
| } |
| |
| /* |
| * Now we backfill the bitmap and the attribute buffer length. |
| */ |
| if (len != ((char *)p - (char *)q) + 4) { |
| printk(KERN_ERR "nfs: Attr length error, %u != %Zu\n", |
| len, ((char *)p - (char *)q) + 4); |
| BUG(); |
| } |
| len = (char *)p - (char *)q - 12; |
| *q++ = htonl(bmval0); |
| *q++ = htonl(bmval1); |
| *q = htonl(len); |
| |
| /* out: */ |
| } |
| |
| static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr) |
| { |
| __be32 *p; |
| |
| p = reserve_space(xdr, 8); |
| *p++ = cpu_to_be32(OP_ACCESS); |
| *p = cpu_to_be32(access); |
| hdr->nops++; |
| hdr->replen += decode_access_maxsz; |
| } |
| |
| static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr) |
| { |
| __be32 *p; |
| |
| p = reserve_space(xdr, 8+NFS4_STATEID_SIZE); |
| *p++ = cpu_to_be32(OP_CLOSE); |
| *p++ = cpu_to_be32(arg->seqid->sequence->counter); |
| xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE); |
| hdr->nops++; |
| hdr->replen += decode_close_maxsz; |
| } |
| |
| static void encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr) |
| { |
| __be32 *p; |
| |
| p = reserve_space(xdr, 16); |
| *p++ = cpu_to_be32(OP_COMMIT); |
| p = xdr_encode_hyper(p, args->offset); |
| *p = cpu_to_be32(args->count); |
| hdr->nops++; |
| hdr->replen += decode_commit_maxsz; |
| } |
| |
| static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr) |
| { |
| __be32 *p; |
| |
| p = reserve_space(xdr, 8); |
| *p++ = cpu_to_be32(OP_CREATE); |
| *p = cpu_to_be32(create->ftype); |
| |
| switch (create->ftype) { |
| case NF4LNK: |
| p = reserve_space(xdr, 4); |
| *p = cpu_to_be32(create->u.symlink.len); |
| xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len); |
| break; |
| |
| case NF4BLK: case NF4CHR: |
| p = reserve_space(xdr, 8); |
| *p++ = cpu_to_be32(create->u.device.specdata1); |
| *p = cpu_to_be32(create->u.device.specdata2); |
| break; |
| |
| default: |
| break; |
| } |
| |
| encode_string(xdr, create->name->len, create->name->name); |
| hdr->nops++; |
| hdr->replen += decode_create_maxsz; |
| |
| encode_attrs(xdr, create->attrs, create->server); |
| } |
| |
| static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr) |
| { |
| __be32 *p; |
| |
| p = reserve_space(xdr, 12); |
| *p++ = cpu_to_be32(OP_GETATTR); |
| *p++ = cpu_to_be32(1); |
| *p = cpu_to_be32(bitmap); |
| hdr->nops++; |
| hdr->replen += decode_getattr_maxsz; |
| } |
| |
| static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr) |
| { |
| __be32 *p; |
| |
| p = reserve_space(xdr, 16); |
| *p++ = cpu_to_be32(OP_GETATTR); |
| *p++ = cpu_to_be32(2); |
| *p++ = cpu_to_be32(bm0); |
| *p = cpu_to_be32(bm1); |
| hdr->nops++; |
| hdr->replen += decode_getattr_maxsz; |
| } |
| |
| static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) |
| { |
| encode_getattr_two(xdr, bitmask[0] & nfs4_fattr_bitmap[0], |
| bitmask[1] & nfs4_fattr_bitmap[1], hdr); |
| } |
| |
| static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) |
| { |
| encode_getattr_two(xdr, bitmask[0] & nfs4_fsinfo_bitmap[0], |
| bitmask[1] & nfs4_fsinfo_bitmap[1], hdr); |
| } |
| |
| static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) |
| { |
| encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0], |
| bitmask[1] & nfs4_fs_locations_bitmap[1], hdr); |
| } |
| |
| static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr) |
| { |
| __be32 *p; |
| |
| p = reserve_space(xdr, 4); |
| *p = cpu_to_be32(OP_GETFH); |
| hdr->nops++; |
| hdr->replen += decode_getfh_maxsz; |
| } |
| |
| static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) |
| { |
| __be32 *p; |
| |
| p = reserve_space(xdr, 8 + name->len); |
| *p++ = cpu_to_be32(OP_LINK); |
| xdr_encode_opaque(p, name->name, name->len); |
| hdr->nops++; |
| hdr->replen += decode_link_maxsz; |
| } |
| |
| static inline int nfs4_lock_type(struct file_lock *fl, int block) |
| { |
| if ((fl->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) == F_RDLCK) |
| return block ? NFS4_READW_LT : NFS4_READ_LT; |
| return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT; |
| } |
| |
| static inline uint64_t nfs4_lock_length(struct file_lock *fl) |
| { |
| if (fl->fl_end == OFFSET_MAX) |
| return ~(uint64_t)0; |
| return fl->fl_end - fl->fl_start + 1; |
| } |
| |
| static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner) |
| { |
| __be32 *p; |
| |
| p = reserve_space(xdr, 28); |
| p = xdr_encode_hyper(p, lowner->clientid); |
| *p++ = cpu_to_be32(16); |
| p = xdr_encode_opaque_fixed(p, "lock id:", 8); |
| xdr_encode_hyper(p, lowner->id); |
| } |
| |
| /* |
| * opcode,type,reclaim,offset,length,new_lock_owner = 32 |
| * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40 |
| */ |
| static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr) |
| { |
| __be32 *p; |
| |
| p = reserve_space(xdr, 32); |
| *p++ = cpu_to_be32(OP_LOCK); |
| *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block)); |
| *p++ = cpu_to_be32(args->reclaim); |
| p = xdr_encode_hyper(p, args->fl->fl_start); |
| p = xdr_encode_hyper(p, nfs4_lock_length(args->fl)); |
| *p = cpu_to_be32(args->new_lock_owner); |
| if (args->new_lock_owner){ |
| p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4); |
| *p++ = cpu_to_be32(args->open_seqid->sequence->counter); |
| p = xdr_encode_opaque_fixed(p, args->open_stateid->data, NFS4_STATEID_SIZE); |
| *p++ = cpu_to_be32(args->lock_seqid->sequence->counter); |
| encode_lockowner(xdr, &args->lock_owner); |
| } |
| else { |
| p = reserve_space(xdr, NFS4_STATEID_SIZE+4); |
| p = xdr_encode_opaque_fixed(p, args->lock_stateid->data, NFS4_STATEID_SIZE); |
| *p = cpu_to_be32(args->lock_seqid->sequence->counter); |
| } |
| hdr->nops++; |
| hdr->replen += decode_lock_maxsz; |
| } |
| |
| static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr) |
| { |
| __be32 *p; |
| |
| p = reserve_space(xdr, 24); |
| *p++ = cpu_to_be32(OP_LOCKT); |
| *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0)); |
| p = xdr_encode_hyper(p, args->fl->fl_start); |
| p = xdr_encode_hyper(p, nfs4_lock_length(args->fl)); |
| encode_lockowner(xdr, &args->lock_owner); |
| hdr->nops++; |
| hdr->replen += decode_lockt_maxsz; |
| } |
| |
| static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr) |
| { |
| __be32 *p; |
| |
| p = reserve_space(xdr, 12+NFS4_STATEID_SIZE+16); |
| *p++ = cpu_to_be32(OP_LOCKU); |
| *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0)); |
| *p++ = cpu_to_be32(args->seqid->sequence->counter); |
| p = xdr_encode_opaque_fixed(p, args->stateid->data, NFS4_STATEID_SIZE); |
| p = xdr_encode_hyper(p, args->fl->fl_start); |
| xdr_encode_hyper(p, nfs4_lock_length(args->fl)); |
| hdr->nops++; |
| hdr->replen += decode_locku_maxsz; |
| } |
| |
| static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr) |
| { |
| __be32 *p; |
| |
| p = reserve_space(xdr, 4); |
| *p = cpu_to_be32(OP_RELEASE_LOCKOWNER); |
| encode_lockowner(xdr, lowner); |
| hdr->nops++; |
| hdr->replen += decode_release_lockowner_maxsz; |
| } |
| |
| static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) |
| { |
| int len = name->len; |
| __be32 *p; |
| |
| p = reserve_space(xdr, 8 + len); |
| *p++ = cpu_to_be32(OP_LOOKUP); |
| xdr_encode_opaque(p, name->name, len); |
| hdr->nops++; |
| hdr->replen += decode_lookup_maxsz; |
| } |
| |
| static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode) |
| { |
| __be32 *p; |
| |
| p = reserve_space(xdr, 8); |
| switch (fmode & (FMODE_READ|FMODE_WRITE)) { |
| case FMODE_READ: |
| *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_READ); |
| break; |
| case FMODE_WRITE: |
| *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_WRITE); |
| break; |
| case FMODE_READ|FMODE_WRITE: |
| *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_BOTH); |
| break; |
| default: |
| *p++ = cpu_to_be32(0); |
| } |
| *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */ |
| } |
| |
| static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg) |
| { |
| __be32 *p; |
| /* |
| * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4, |
| * owner 4 = 32 |
| */ |
| p = reserve_space(xdr, 8); |
| *p++ = cpu_to_be32(OP_OPEN); |
| *p = cpu_to_be32(arg->seqid->sequence->counter); |
| encode_share_access(xdr, arg->fmode); |
| p = reserve_space(xdr, 28); |
| p = xdr_encode_hyper(p, arg->clientid); |
| *p++ = cpu_to_be32(16); |
| p = xdr_encode_opaque_fixed(p, "open id:", 8); |
| xdr_encode_hyper(p, arg->id); |
| } |
| |
| static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg) |
| { |
| __be32 *p; |
| struct nfs_client *clp; |
| |
| p = reserve_space(xdr, 4); |
| switch(arg->open_flags & O_EXCL) { |
| case 0: |
| *p = cpu_to_be32(NFS4_CREATE_UNCHECKED); |
| encode_attrs(xdr, arg->u.attrs, arg->server); |
| break; |
| default: |
| clp = arg->server->nfs_client; |
| if (clp->cl_mvops->minor_version > 0) { |
| if (nfs4_has_persistent_session(clp)) { |
| *p = cpu_to_be32(NFS4_CREATE_GUARDED); |
| encode_attrs(xdr, arg->u.attrs, arg->server); |
| } else { |
| struct iattr dummy; |
| |
| *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1); |
| encode_nfs4_verifier(xdr, &arg->u.verifier); |
| dummy.ia_valid = 0; |
| encode_attrs(xdr, &dummy, arg->server); |
| } |
| } else { |
| *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE); |
| encode_nfs4_verifier(xdr, &arg->u.verifier); |
| } |
| } |
| } |
| |
| static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg) |
| { |
| __be32 *p; |
| |
| p = reserve_space(xdr, 4); |
| switch (arg->open_flags & O_CREAT) { |
| case 0: |
| *p = cpu_to_be32(NFS4_OPEN_NOCREATE); |
| break; |
| default: |
| BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL); |
| *p = cpu_to_be32(NFS4_OPEN_CREATE); |
| encode_createmode(xdr, arg); |
| } |
| } |
| |
| static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type) |
| { |
| __be32 *p; |
| |
| p = reserve_space(xdr, 4); |
| switch (delegation_type) { |
| case 0: |
| *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE); |
| break; |
| case FMODE_READ: |
| *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ); |
| break; |
| case FMODE_WRITE|FMODE_READ: |
| *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE); |
| break; |
| default: |
| BUG(); |
| } |
| } |
| |
| static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name) |
| { |
| __be32 *p; |
| |
| p = reserve_space(xdr, 4); |
| *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL); |
| encode_string(xdr, name->len, name->name); |
| } |
| |
| static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type) |
| { |
| __be32 *p; |
| |
| p = reserve_space(xdr, 4); |
| *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS); |
| encode_delegation_type(xdr, type); |
| } |
| |
| static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid) |
| { |
| __be32 *p; |
| |
| p = reserve_space(xdr, 4+NFS4_STATEID_SIZE); |
| *p++ = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR); |
| xdr_encode_opaque_fixed(p, stateid->data, NFS4_STATEID_SIZE); |
| encode_string(xdr, name->len, name->name); |
| } |
| |
| static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr) |
| { |
| encode_openhdr(xdr, arg); |
| encode_opentype(xdr, arg); |
| switch (arg->claim) { |
| case NFS4_OPEN_CLAIM_NULL: |
| encode_claim_null(xdr, arg->name); |
| break; |
| case NFS4_OPEN_CLAIM_PREVIOUS: |
| encode_claim_previous(xdr, arg->u.delegation_type); |
| break; |
| case NFS4_OPEN_CLAIM_DELEGATE_CUR: |
| encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation); |
| break; |
| default: |
| BUG(); |
| } |
| hdr->nops++; |
| hdr->replen += decode_open_maxsz; |
| } |
| |
| static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr) |
| { |
| __be32 *p; |
| |
| p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4); |
| *p++ = cpu_to_be32(OP_OPEN_CONFIRM); |
| p = xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE); |
| *p = cpu_to_be32(arg->seqid->sequence->counter); |
| hdr->nops++; |
| hdr->replen += decode_open_confirm_maxsz; |
| } |
| |
| static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr) |
| { |
| __be32 *p; |
| |
| p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4); |
| *p++ = cpu_to_be32(OP_OPEN_DOWNGRADE); |
| p = xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE); |
| *p = cpu_to_be32(arg->seqid->sequence->counter); |
| encode_share_access(xdr, arg->fmode); |
| hdr->nops++; |
| hdr->replen += decode_open_downgrade_maxsz; |
| } |
| |
| static void |
| encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr) |
| { |
| int len = fh->size; |
| __be32 *p; |
| |
| p = reserve_space(xdr, 8 + len); |
| *p++ = cpu_to_be32(OP_PUTFH); |
| xdr_encode_opaque(p, fh->data, len); |
| hdr->nops++; |
| hdr->replen += decode_putfh_maxsz; |
| } |
| |
| static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr) |
| { |
| __be32 *p; |
| |
| p = reserve_space(xdr, 4); |
| *p = cpu_to_be32(OP_PUTROOTFH); |
| hdr->nops++; |
| hdr->replen += decode_putrootfh_maxsz; |
| } |
| |
| static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx, const struct nfs_lock_context *l_ctx) |
| { |
| nfs4_stateid stateid; |
| __be32 *p; |
| |
| p = reserve_space(xdr, NFS4_STATEID_SIZE); |
| if (ctx->state != NULL) { |
| nfs4_copy_stateid(&stateid, ctx->state, l_ctx->lockowner, l_ctx->pid); |
| xdr_encode_opaque_fixed(p, stateid.data, NFS4_STATEID_SIZE); |
| } else |
| xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE); |
| } |
| |
| static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr) |
| { |
| __be32 *p; |
| |
| p = reserve_space(xdr, 4); |
| *p = cpu_to_be32(OP_READ); |
| |
| encode_stateid(xdr, args->context, args->lock_context); |
| |
| p = reserve_space(xdr, 12); |
| p = xdr_encode_hyper(p, args->offset); |
| *p = cpu_to_be32(args->count); |
| hdr->nops++; |
| hdr->replen += decode_read_maxsz; |
| } |
| |
| static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr) |
| { |
| uint32_t attrs[2] = {0, 0}; |
| uint32_t dircount = readdir->count >> 1; |
| __be32 *p; |
| |
| if (readdir->plus) { |
| attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE| |
| FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE; |
| attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER| |
| FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV| |
| FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS| |
| FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; |
| dircount >>= 1; |
| } |
| attrs[0] |= FATTR4_WORD0_RDATTR_ERROR|FATTR4_WORD0_FILEID; |
| attrs[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; |
| /* Switch to mounted_on_fileid if the server supports it */ |
| if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) |
| attrs[0] &= ~FATTR4_WORD0_FILEID; |
| else |
| attrs[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID; |
| |
| p = reserve_space(xdr, 12+NFS4_VERIFIER_SIZE+20); |
| *p++ = cpu_to_be32(OP_READDIR); |
| p = xdr_encode_hyper(p, readdir->cookie); |
| p = xdr_encode_opaque_fixed(p, readdir->verifier.data, NFS4_VERIFIER_SIZE); |
| *p++ = cpu_to_be32(dircount); |
| *p++ = cpu_to_be32(readdir->count); |
| *p++ = cpu_to_be32(2); |
| |
| *p++ = cpu_to_be32(attrs[0] & readdir->bitmask[0]); |
| *p = cpu_to_be32(attrs[1] & readdir->bitmask[1]); |
| hdr->nops++; |
| hdr->replen += decode_readdir_maxsz; |
| dprintk("%s: cookie = %Lu, verifier = %08x:%08x, bitmap = %08x:%08x\n", |
| __func__, |
| (unsigned long long)readdir->cookie, |
| ((u32 *)readdir->verifier.data)[0], |
| ((u32 *)readdir->verifier.data)[1], |
| attrs[0] & readdir->bitmask[0], |
| attrs[1] & readdir->bitmask[1]); |
| } |
| |
| static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr) |
| { |
| __be32 *p; |
| |
| p = reserve_space(xdr, 4); |
| *p = cpu_to_be32(OP_READLINK); |
| hdr->nops++; |
| hdr->replen += decode_readlink_maxsz; |
| } |
| |
| static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr) |
| { |
| __be32 *p; |
| |
| p = reserve_space(xdr, 8 + name->len); |
| *p++ = cpu_to_be32(OP_REMOVE); |
| xdr_encode_opaque(p, name->name, name->len); |
| hdr->nops++; |
| hdr->replen += decode_remove_maxsz; |
| } |
| |
| static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr) |
| { |
| __be32 *p; |
| |
| p = reserve_space(xdr, 4); |
| *p = cpu_to_be32(OP_RENAME); |
| encode_string(xdr, oldname->len, oldname->name); |
| encode_string(xdr, newname->len, newname->name); |
| hdr->nops++; |
| hdr->replen += decode_rename_maxsz; |
| } |
| |
| static void encode_renew(struct xdr_stream *xdr, const struct nfs_client *client_stateid, struct compound_hdr *hdr) |
| { |
| __be32 *p; |
| |
| p = reserve_space(xdr, 12); |
| *p++ = cpu_to_be32(OP_RENEW); |
| xdr_encode_hyper(p, client_stateid->cl_clientid); |
| hdr->nops++; |
| hdr->replen += decode_renew_maxsz; |
| } |
| |
| static void |
| encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr) |
| { |
| __be32 *p; |
| |
| p = reserve_space(xdr, 4); |
| *p = cpu_to_be32(OP_RESTOREFH); |
| hdr->nops++; |
| hdr->replen += decode_restorefh_maxsz; |
| } |
| |
| static int |
| encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr) |
| { |
| __be32 *p; |
| |
| p = reserve_space(xdr, 4+NFS4_STATEID_SIZE); |
| *p++ = cpu_to_be32(OP_SETATTR); |
| xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE); |
| p = reserve_space(xdr, 2*4); |
| *p++ = cpu_to_be32(1); |
| *p = cpu_to_be32(FATTR4_WORD0_ACL); |
| if (arg->acl_len % 4) |
| return -EINVAL; |
| p = reserve_space(xdr, 4); |
| *p = cpu_to_be32(arg->acl_len); |
| xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len); |
| hdr->nops++; |
| hdr->replen += decode_setacl_maxsz; |
| return 0; |
| } |
| |
| static void |
| encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr) |
| { |
| __be32 *p; |
| |
| p = reserve_space(xdr, 4); |
| *p = cpu_to_be32(OP_SAVEFH); |
| hdr->nops++; |
| hdr->replen += decode_savefh_maxsz; |
| } |
| |
| static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr) |
| { |
| __be32 *p; |
| |
| p = reserve_space(xdr, 4+NFS4_STATEID_SIZE); |
| *p++ = cpu_to_be32(OP_SETATTR); |
| xdr_encode_opaque_fixed(p, arg->stateid.data, NFS4_STATEID_SIZE); |
| hdr->nops++; |
| hdr->replen += decode_setattr_maxsz; |
| encode_attrs(xdr, arg->iap, server); |
| } |
| |
| static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr) |
| { |
| __be32 *p; |
| |
| p = reserve_space(xdr, 4 + NFS4_VERIFIER_SIZE); |
| *p++ = cpu_to_be32(OP_SETCLIENTID); |
| xdr_encode_opaque_fixed(p, setclientid->sc_verifier->data, NFS4_VERIFIER_SIZE); |
| |
| encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name); |
| p = reserve_space(xdr, 4); |
| *p = cpu_to_be32(setclientid->sc_prog); |
| encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid); |
| encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr); |
| p = reserve_space(xdr, 4); |
| *p = cpu_to_be32(setclientid->sc_cb_ident); |
| hdr->nops++; |
| hdr->replen += decode_setclientid_maxsz; |
| } |
| |
| static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr) |
| { |
| __be32 *p; |
| |
| p = reserve_space(xdr, 12 + NFS4_VERIFIER_SIZE); |
| *p++ = cpu_to_be32(OP_SETCLIENTID_CONFIRM); |
| p = xdr_encode_hyper(p, arg->clientid); |
| xdr_encode_opaque_fixed(p, arg->confirm.data, NFS4_VERIFIER_SIZE); |
| hdr->nops++; |
| hdr->replen += decode_setclientid_confirm_maxsz; |
| } |
| |
| static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr) |
| { |
| __be32 *p; |
| |
| p = reserve_space(xdr, 4); |
| *p = cpu_to_be32(OP_WRITE); |
| |
| encode_stateid(xdr, args->context, args->lock_context); |
| |
| p = reserve_space(xdr, 16); |
| p = xdr_encode_hyper(p, args->offset); |
| *p++ = cpu_to_be32(args->stable); |
| *p = cpu_to_be32(args->count); |
| |
| xdr_write_pages(xdr, args->pages, args->pgbase, args->count); |
| hdr->nops++; |
| hdr->replen += decode_write_maxsz; |
| } |
| |
| static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr) |
| { |
| __be32 *p; |
| |
| p = reserve_space(xdr, 4+NFS4_STATEID_SIZE); |
| |
| *p++ = cpu_to_be32(OP_DELEGRETURN); |
| xdr_encode_opaque_fixed(p, stateid->data, NFS4_STATEID_SIZE); |
| hdr->nops++; |
| hdr->replen += decode_delegreturn_maxsz; |
| } |
| |
| #if defined(CONFIG_NFS_V4_1) |
| /* NFSv4.1 operations */ |
| static void encode_exchange_id(struct xdr_stream *xdr, |
| struct nfs41_exchange_id_args *args, |
| struct compound_hdr *hdr) |
| { |
| __be32 *p; |
| |
| p = reserve_space(xdr, 4 + sizeof(args->verifier->data)); |
| *p++ = cpu_to_be32(OP_EXCHANGE_ID); |
| xdr_encode_opaque_fixed(p, args->verifier->data, sizeof(args->verifier->data)); |
| |
| encode_string(xdr, args->id_len, args->id); |
| |
| p = reserve_space(xdr, 12); |
| *p++ = cpu_to_be32(args->flags); |
| *p++ = cpu_to_be32(0); /* zero length state_protect4_a */ |
| *p = cpu_to_be32(0); /* zero length implementation id array */ |
| hdr->nops++; |
| hdr->replen += decode_exchange_id_maxsz; |
| } |
| |
| static void encode_create_session(struct xdr_stream *xdr, |
| struct nfs41_create_session_args *args, |
| struct compound_hdr *hdr) |
| { |
| __be32 *p; |
| char machine_name[NFS4_MAX_MACHINE_NAME_LEN]; |
| uint32_t len; |
| struct nfs_client *clp = args->client; |
| u32 max_resp_sz_cached; |
| |
| /* |
| * Assumes OPEN is the biggest non-idempotent compound. |
| * 2 is the verifier. |
| */ |
| max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE + |
| RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT; |
| |
| len = scnprintf(machine_name, sizeof(machine_name), "%s", |
| clp->cl_ipaddr); |
| |
| p = reserve_space(xdr, 20 + 2*28 + 20 + len + 12); |
| *p++ = cpu_to_be32(OP_CREATE_SESSION); |
| p = xdr_encode_hyper(p, clp->cl_ex_clid); |
| *p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */ |
| *p++ = cpu_to_be32(args->flags); /*flags */ |
| |
| /* Fore Channel */ |
| *p++ = cpu_to_be32(args->fc_attrs.headerpadsz); /* header padding size */ |
| *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */ |
| *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */ |
| *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */ |
| *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */ |
| *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */ |
| *p++ = cpu_to_be32(0); /* rdmachannel_attrs */ |
| |
| /* Back Channel */ |
| *p++ = cpu_to_be32(args->fc_attrs.headerpadsz); /* header padding size */ |
| *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */ |
| *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */ |
| *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */ |
| *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */ |
| *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */ |
| *p++ = cpu_to_be32(0); /* rdmachannel_attrs */ |
| |
| *p++ = cpu_to_be32(args->cb_program); /* cb_program */ |
| *p++ = cpu_to_be32(1); |
| *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */ |
| |
| /* authsys_parms rfc1831 */ |
| *p++ = cpu_to_be32((u32)clp->cl_boot_time.tv_nsec); /* stamp */ |
| p = xdr_encode_opaque(p, machine_name, len); |
| *p++ = cpu_to_be32(0); /* UID */ |
| *p++ = cpu_to_be32(0); /* GID */ |
| *p = cpu_to_be32(0); /* No more gids */ |
| hdr->nops++; |
| hdr->replen += decode_create_session_maxsz; |
| } |
| |
| static void encode_destroy_session(struct xdr_stream *xdr, |
| struct nfs4_session *session, |
| struct compound_hdr *hdr) |
| { |
| __be32 *p; |
| p = reserve_space(xdr, 4 + NFS4_MAX_SESSIONID_LEN); |
| *p++ = cpu_to_be32(OP_DESTROY_SESSION); |
| xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN); |
| hdr->nops++; |
| hdr->replen += decode_destroy_session_maxsz; |
| } |
| |
| static void encode_reclaim_complete(struct xdr_stream *xdr, |
| struct nfs41_reclaim_complete_args *args, |
| struct compound_hdr *hdr) |
| { |
| __be32 *p; |
| |
| p = reserve_space(xdr, 8); |
| *p++ = cpu_to_be32(OP_RECLAIM_COMPLETE); |
| *p++ = cpu_to_be32(args->one_fs); |
| hdr->nops++; |
| hdr->replen += decode_reclaim_complete_maxsz; |
| } |
| #endif /* CONFIG_NFS_V4_1 */ |
| |
| static void encode_sequence(struct xdr_stream *xdr, |
| const struct nfs4_sequence_args *args, |
| struct compound_hdr *hdr) |
| { |
| #if defined(CONFIG_NFS_V4_1) |
| struct nfs4_session *session = args->sa_session; |
| struct nfs4_slot_table *tp; |
| struct nfs4_slot *slot; |
| __be32 *p; |
| |
| if (!session) |
| return; |
| |
| tp = &session->fc_slot_table; |
| |
| WARN_ON(args->sa_slotid == NFS4_MAX_SLOT_TABLE); |
| slot = tp->slots + args->sa_slotid; |
| |
| p = reserve_space(xdr, 4 + NFS4_MAX_SESSIONID_LEN + 16); |
| *p++ = cpu_to_be32(OP_SEQUENCE); |
| |
| /* |
| * Sessionid + seqid + slotid + max slotid + cache_this |
| */ |
| dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d " |
| "max_slotid=%d cache_this=%d\n", |
| __func__, |
| ((u32 *)session->sess_id.data)[0], |
| ((u32 *)session->sess_id.data)[1], |
| ((u32 *)session->sess_id.data)[2], |
| ((u32 *)session->sess_id.data)[3], |
| slot->seq_nr, args->sa_slotid, |
| tp->highest_used_slotid, args->sa_cache_this); |
| p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN); |
| *p++ = cpu_to_be32(slot->seq_nr); |
| *p++ = cpu_to_be32(args->sa_slotid); |
| *p++ = cpu_to_be32(tp->highest_used_slotid); |
| *p = cpu_to_be32(args->sa_cache_this); |
| hdr->nops++; |
| hdr->replen += decode_sequence_maxsz; |
| #endif /* CONFIG_NFS_V4_1 */ |
| } |
| |
| #ifdef CONFIG_NFS_V4_1 |
| static void |
| encode_getdeviceinfo(struct xdr_stream *xdr, |
| const struct nfs4_getdeviceinfo_args *args, |
| struct compound_hdr *hdr) |
| { |
| __be32 *p; |
| |
| p = reserve_space(xdr, 16 + NFS4_DEVICEID4_SIZE); |
| *p++ = cpu_to_be32(OP_GETDEVICEINFO); |
| p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data, |
| NFS4_DEVICEID4_SIZE); |
| *p++ = cpu_to_be32(args->pdev->layout_type); |
| *p++ = cpu_to_be32(args->pdev->pglen); /* gdia_maxcount */ |
| *p++ = cpu_to_be32(0); /* bitmap length 0 */ |
| hdr->nops++; |
| hdr->replen += decode_getdeviceinfo_maxsz; |
| } |
| |
| static void |
| encode_layoutget(struct xdr_stream *xdr, |
| const struct nfs4_layoutget_args *args, |
| struct compound_hdr *hdr) |
| { |
| nfs4_stateid stateid; |
| __be32 *p; |
| |
| p = reserve_space(xdr, 44 + NFS4_STATEID_SIZE); |
| *p++ = cpu_to_be32(OP_LAYOUTGET); |
| *p++ = cpu_to_be32(0); /* Signal layout available */ |
| *p++ = cpu_to_be32(args->type); |
| *p++ = cpu_to_be32(args->range.iomode); |
| p = xdr_encode_hyper(p, args->range.offset); |
| p = xdr_encode_hyper(p, args->range.length); |
| p = xdr_encode_hyper(p, args->minlength); |
| pnfs_get_layout_stateid(&stateid, NFS_I(args->inode)->layout, |
| args->ctx->state); |
| p = xdr_encode_opaque_fixed(p, &stateid.data, NFS4_STATEID_SIZE); |
| *p = cpu_to_be32(args->maxcount); |
| |
| dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n", |
| __func__, |
| args->type, |
| args->range.iomode, |
| (unsigned long)args->range.offset, |
| (unsigned long)args->range.length, |
| args->maxcount); |
| hdr->nops++; |
| hdr->replen += decode_layoutget_maxsz; |
| } |
| #endif /* CONFIG_NFS_V4_1 */ |
| |
| /* |
| * END OF "GENERIC" ENCODE ROUTINES. |
| */ |
| |
| static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args) |
| { |
| #if defined(CONFIG_NFS_V4_1) |
| if (args->sa_session) |
| return args->sa_session->clp->cl_mvops->minor_version; |
| #endif /* CONFIG_NFS_V4_1 */ |
| return 0; |
| } |
| |
| /* |
| * Encode an ACCESS request |
| */ |
| static int nfs4_xdr_enc_access(struct rpc_rqst *req, __be32 *p, const struct nfs4_accessargs *args) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .minorversion = nfs4_xdr_minorversion(&args->seq_args), |
| }; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_sequence(&xdr, &args->seq_args, &hdr); |
| encode_putfh(&xdr, args->fh, &hdr); |
| encode_access(&xdr, args->access, &hdr); |
| encode_getfattr(&xdr, args->bitmask, &hdr); |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| /* |
| * Encode LOOKUP request |
| */ |
| static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_arg *args) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .minorversion = nfs4_xdr_minorversion(&args->seq_args), |
| }; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_sequence(&xdr, &args->seq_args, &hdr); |
| encode_putfh(&xdr, args->dir_fh, &hdr); |
| encode_lookup(&xdr, args->name, &hdr); |
| encode_getfh(&xdr, &hdr); |
| encode_getfattr(&xdr, args->bitmask, &hdr); |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| /* |
| * Encode LOOKUP_ROOT request |
| */ |
| static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_root_arg *args) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .minorversion = nfs4_xdr_minorversion(&args->seq_args), |
| }; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_sequence(&xdr, &args->seq_args, &hdr); |
| encode_putrootfh(&xdr, &hdr); |
| encode_getfh(&xdr, &hdr); |
| encode_getfattr(&xdr, args->bitmask, &hdr); |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| /* |
| * Encode REMOVE request |
| */ |
| static int nfs4_xdr_enc_remove(struct rpc_rqst *req, __be32 *p, const struct nfs_removeargs *args) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .minorversion = nfs4_xdr_minorversion(&args->seq_args), |
| }; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_sequence(&xdr, &args->seq_args, &hdr); |
| encode_putfh(&xdr, args->fh, &hdr); |
| encode_remove(&xdr, &args->name, &hdr); |
| encode_getfattr(&xdr, args->bitmask, &hdr); |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| /* |
| * Encode RENAME request |
| */ |
| static int nfs4_xdr_enc_rename(struct rpc_rqst *req, __be32 *p, const struct nfs_renameargs *args) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .minorversion = nfs4_xdr_minorversion(&args->seq_args), |
| }; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_sequence(&xdr, &args->seq_args, &hdr); |
| encode_putfh(&xdr, args->old_dir, &hdr); |
| encode_savefh(&xdr, &hdr); |
| encode_putfh(&xdr, args->new_dir, &hdr); |
| encode_rename(&xdr, args->old_name, args->new_name, &hdr); |
| encode_getfattr(&xdr, args->bitmask, &hdr); |
| encode_restorefh(&xdr, &hdr); |
| encode_getfattr(&xdr, args->bitmask, &hdr); |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| /* |
| * Encode LINK request |
| */ |
| static int nfs4_xdr_enc_link(struct rpc_rqst *req, __be32 *p, const struct nfs4_link_arg *args) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .minorversion = nfs4_xdr_minorversion(&args->seq_args), |
| }; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_sequence(&xdr, &args->seq_args, &hdr); |
| encode_putfh(&xdr, args->fh, &hdr); |
| encode_savefh(&xdr, &hdr); |
| encode_putfh(&xdr, args->dir_fh, &hdr); |
| encode_link(&xdr, args->name, &hdr); |
| encode_getfattr(&xdr, args->bitmask, &hdr); |
| encode_restorefh(&xdr, &hdr); |
| encode_getfattr(&xdr, args->bitmask, &hdr); |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| /* |
| * Encode CREATE request |
| */ |
| static int nfs4_xdr_enc_create(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .minorversion = nfs4_xdr_minorversion(&args->seq_args), |
| }; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_sequence(&xdr, &args->seq_args, &hdr); |
| encode_putfh(&xdr, args->dir_fh, &hdr); |
| encode_savefh(&xdr, &hdr); |
| encode_create(&xdr, args, &hdr); |
| encode_getfh(&xdr, &hdr); |
| encode_getfattr(&xdr, args->bitmask, &hdr); |
| encode_restorefh(&xdr, &hdr); |
| encode_getfattr(&xdr, args->bitmask, &hdr); |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| /* |
| * Encode SYMLINK request |
| */ |
| static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args) |
| { |
| return nfs4_xdr_enc_create(req, p, args); |
| } |
| |
| /* |
| * Encode GETATTR request |
| */ |
| static int nfs4_xdr_enc_getattr(struct rpc_rqst *req, __be32 *p, const struct nfs4_getattr_arg *args) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .minorversion = nfs4_xdr_minorversion(&args->seq_args), |
| }; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_sequence(&xdr, &args->seq_args, &hdr); |
| encode_putfh(&xdr, args->fh, &hdr); |
| encode_getfattr(&xdr, args->bitmask, &hdr); |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| /* |
| * Encode a CLOSE request |
| */ |
| static int nfs4_xdr_enc_close(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .minorversion = nfs4_xdr_minorversion(&args->seq_args), |
| }; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_sequence(&xdr, &args->seq_args, &hdr); |
| encode_putfh(&xdr, args->fh, &hdr); |
| encode_close(&xdr, args, &hdr); |
| encode_getfattr(&xdr, args->bitmask, &hdr); |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| /* |
| * Encode an OPEN request |
| */ |
| static int nfs4_xdr_enc_open(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .minorversion = nfs4_xdr_minorversion(&args->seq_args), |
| }; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_sequence(&xdr, &args->seq_args, &hdr); |
| encode_putfh(&xdr, args->fh, &hdr); |
| encode_savefh(&xdr, &hdr); |
| encode_open(&xdr, args, &hdr); |
| encode_getfh(&xdr, &hdr); |
| encode_getfattr(&xdr, args->bitmask, &hdr); |
| encode_restorefh(&xdr, &hdr); |
| encode_getfattr(&xdr, args->bitmask, &hdr); |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| /* |
| * Encode an OPEN_CONFIRM request |
| */ |
| static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_open_confirmargs *args) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .nops = 0, |
| }; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_putfh(&xdr, args->fh, &hdr); |
| encode_open_confirm(&xdr, args, &hdr); |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| /* |
| * Encode an OPEN request with no attributes. |
| */ |
| static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .minorversion = nfs4_xdr_minorversion(&args->seq_args), |
| }; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_sequence(&xdr, &args->seq_args, &hdr); |
| encode_putfh(&xdr, args->fh, &hdr); |
| encode_open(&xdr, args, &hdr); |
| encode_getfattr(&xdr, args->bitmask, &hdr); |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| /* |
| * Encode an OPEN_DOWNGRADE request |
| */ |
| static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .minorversion = nfs4_xdr_minorversion(&args->seq_args), |
| }; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_sequence(&xdr, &args->seq_args, &hdr); |
| encode_putfh(&xdr, args->fh, &hdr); |
| encode_open_downgrade(&xdr, args, &hdr); |
| encode_getfattr(&xdr, args->bitmask, &hdr); |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| /* |
| * Encode a LOCK request |
| */ |
| static int nfs4_xdr_enc_lock(struct rpc_rqst *req, __be32 *p, struct nfs_lock_args *args) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .minorversion = nfs4_xdr_minorversion(&args->seq_args), |
| }; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_sequence(&xdr, &args->seq_args, &hdr); |
| encode_putfh(&xdr, args->fh, &hdr); |
| encode_lock(&xdr, args, &hdr); |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| /* |
| * Encode a LOCKT request |
| */ |
| static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, __be32 *p, struct nfs_lockt_args *args) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .minorversion = nfs4_xdr_minorversion(&args->seq_args), |
| }; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_sequence(&xdr, &args->seq_args, &hdr); |
| encode_putfh(&xdr, args->fh, &hdr); |
| encode_lockt(&xdr, args, &hdr); |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| /* |
| * Encode a LOCKU request |
| */ |
| static int nfs4_xdr_enc_locku(struct rpc_rqst *req, __be32 *p, struct nfs_locku_args *args) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .minorversion = nfs4_xdr_minorversion(&args->seq_args), |
| }; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_sequence(&xdr, &args->seq_args, &hdr); |
| encode_putfh(&xdr, args->fh, &hdr); |
| encode_locku(&xdr, args, &hdr); |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| static int nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req, __be32 *p, struct nfs_release_lockowner_args *args) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .minorversion = 0, |
| }; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_release_lockowner(&xdr, &args->lock_owner, &hdr); |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| /* |
| * Encode a READLINK request |
| */ |
| static int nfs4_xdr_enc_readlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_readlink *args) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .minorversion = nfs4_xdr_minorversion(&args->seq_args), |
| }; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_sequence(&xdr, &args->seq_args, &hdr); |
| encode_putfh(&xdr, args->fh, &hdr); |
| encode_readlink(&xdr, args, req, &hdr); |
| |
| xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages, |
| args->pgbase, args->pglen); |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| /* |
| * Encode a READDIR request |
| */ |
| static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, __be32 *p, const struct nfs4_readdir_arg *args) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .minorversion = nfs4_xdr_minorversion(&args->seq_args), |
| }; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_sequence(&xdr, &args->seq_args, &hdr); |
| encode_putfh(&xdr, args->fh, &hdr); |
| encode_readdir(&xdr, args, req, &hdr); |
| |
| xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages, |
| args->pgbase, args->count); |
| dprintk("%s: inlined page args = (%u, %p, %u, %u)\n", |
| __func__, hdr.replen << 2, args->pages, |
| args->pgbase, args->count); |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| /* |
| * Encode a READ request |
| */ |
| static int nfs4_xdr_enc_read(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .minorversion = nfs4_xdr_minorversion(&args->seq_args), |
| }; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_sequence(&xdr, &args->seq_args, &hdr); |
| encode_putfh(&xdr, args->fh, &hdr); |
| encode_read(&xdr, args, &hdr); |
| |
| xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, |
| args->pages, args->pgbase, args->count); |
| req->rq_rcv_buf.flags |= XDRBUF_READ; |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| /* |
| * Encode an SETATTR request |
| */ |
| static int nfs4_xdr_enc_setattr(struct rpc_rqst *req, __be32 *p, struct nfs_setattrargs *args) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .minorversion = nfs4_xdr_minorversion(&args->seq_args), |
| }; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_sequence(&xdr, &args->seq_args, &hdr); |
| encode_putfh(&xdr, args->fh, &hdr); |
| encode_setattr(&xdr, args, args->server, &hdr); |
| encode_getfattr(&xdr, args->bitmask, &hdr); |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| /* |
| * Encode a GETACL request |
| */ |
| static int |
| nfs4_xdr_enc_getacl(struct rpc_rqst *req, __be32 *p, |
| struct nfs_getaclargs *args) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .minorversion = nfs4_xdr_minorversion(&args->seq_args), |
| }; |
| uint32_t replen; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_sequence(&xdr, &args->seq_args, &hdr); |
| encode_putfh(&xdr, args->fh, &hdr); |
| replen = hdr.replen + op_decode_hdr_maxsz + nfs4_fattr_bitmap_maxsz + 1; |
| encode_getattr_two(&xdr, FATTR4_WORD0_ACL, 0, &hdr); |
| |
| xdr_inline_pages(&req->rq_rcv_buf, replen << 2, |
| args->acl_pages, args->acl_pgbase, args->acl_len); |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| /* |
| * Encode a WRITE request |
| */ |
| static int nfs4_xdr_enc_write(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .minorversion = nfs4_xdr_minorversion(&args->seq_args), |
| }; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_sequence(&xdr, &args->seq_args, &hdr); |
| encode_putfh(&xdr, args->fh, &hdr); |
| encode_write(&xdr, args, &hdr); |
| req->rq_snd_buf.flags |= XDRBUF_WRITE; |
| encode_getfattr(&xdr, args->bitmask, &hdr); |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| /* |
| * a COMMIT request |
| */ |
| static int nfs4_xdr_enc_commit(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .minorversion = nfs4_xdr_minorversion(&args->seq_args), |
| }; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_sequence(&xdr, &args->seq_args, &hdr); |
| encode_putfh(&xdr, args->fh, &hdr); |
| encode_commit(&xdr, args, &hdr); |
| encode_getfattr(&xdr, args->bitmask, &hdr); |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| /* |
| * FSINFO request |
| */ |
| static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, __be32 *p, struct nfs4_fsinfo_arg *args) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .minorversion = nfs4_xdr_minorversion(&args->seq_args), |
| }; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_sequence(&xdr, &args->seq_args, &hdr); |
| encode_putfh(&xdr, args->fh, &hdr); |
| encode_fsinfo(&xdr, args->bitmask, &hdr); |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| /* |
| * a PATHCONF request |
| */ |
| static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, __be32 *p, const struct nfs4_pathconf_arg *args) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .minorversion = nfs4_xdr_minorversion(&args->seq_args), |
| }; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_sequence(&xdr, &args->seq_args, &hdr); |
| encode_putfh(&xdr, args->fh, &hdr); |
| encode_getattr_one(&xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0], |
| &hdr); |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| /* |
| * a STATFS request |
| */ |
| static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, __be32 *p, const struct nfs4_statfs_arg *args) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .minorversion = nfs4_xdr_minorversion(&args->seq_args), |
| }; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_sequence(&xdr, &args->seq_args, &hdr); |
| encode_putfh(&xdr, args->fh, &hdr); |
| encode_getattr_two(&xdr, args->bitmask[0] & nfs4_statfs_bitmap[0], |
| args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr); |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| /* |
| * GETATTR_BITMAP request |
| */ |
| static int nfs4_xdr_enc_server_caps(struct rpc_rqst *req, __be32 *p, |
| struct nfs4_server_caps_arg *args) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .minorversion = nfs4_xdr_minorversion(&args->seq_args), |
| }; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_sequence(&xdr, &args->seq_args, &hdr); |
| encode_putfh(&xdr, args->fhandle, &hdr); |
| encode_getattr_one(&xdr, FATTR4_WORD0_SUPPORTED_ATTRS| |
| FATTR4_WORD0_LINK_SUPPORT| |
| FATTR4_WORD0_SYMLINK_SUPPORT| |
| FATTR4_WORD0_ACLSUPPORT, &hdr); |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| /* |
| * a RENEW request |
| */ |
| static int nfs4_xdr_enc_renew(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .nops = 0, |
| }; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_renew(&xdr, clp, &hdr); |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| /* |
| * a SETCLIENTID request |
| */ |
| static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, __be32 *p, struct nfs4_setclientid *sc) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .nops = 0, |
| }; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_setclientid(&xdr, sc, &hdr); |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| /* |
| * a SETCLIENTID_CONFIRM request |
| */ |
| static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs4_setclientid_res *arg) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .nops = 0, |
| }; |
| const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 }; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_setclientid_confirm(&xdr, arg, &hdr); |
| encode_putrootfh(&xdr, &hdr); |
| encode_fsinfo(&xdr, lease_bitmap, &hdr); |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| /* |
| * DELEGRETURN request |
| */ |
| static int nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, __be32 *p, const struct nfs4_delegreturnargs *args) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .minorversion = nfs4_xdr_minorversion(&args->seq_args), |
| }; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_sequence(&xdr, &args->seq_args, &hdr); |
| encode_putfh(&xdr, args->fhandle, &hdr); |
| encode_delegreturn(&xdr, args->stateid, &hdr); |
| encode_getfattr(&xdr, args->bitmask, &hdr); |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| /* |
| * Encode FS_LOCATIONS request |
| */ |
| static int nfs4_xdr_enc_fs_locations(struct rpc_rqst *req, __be32 *p, struct nfs4_fs_locations_arg *args) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .minorversion = nfs4_xdr_minorversion(&args->seq_args), |
| }; |
| uint32_t replen; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_sequence(&xdr, &args->seq_args, &hdr); |
| encode_putfh(&xdr, args->dir_fh, &hdr); |
| encode_lookup(&xdr, args->name, &hdr); |
| replen = hdr.replen; /* get the attribute into args->page */ |
| encode_fs_locations(&xdr, args->bitmask, &hdr); |
| |
| xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page, |
| 0, PAGE_SIZE); |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| #if defined(CONFIG_NFS_V4_1) |
| /* |
| * EXCHANGE_ID request |
| */ |
| static int nfs4_xdr_enc_exchange_id(struct rpc_rqst *req, uint32_t *p, |
| struct nfs41_exchange_id_args *args) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .minorversion = args->client->cl_mvops->minor_version, |
| }; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_exchange_id(&xdr, args, &hdr); |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| /* |
| * a CREATE_SESSION request |
| */ |
| static int nfs4_xdr_enc_create_session(struct rpc_rqst *req, uint32_t *p, |
| struct nfs41_create_session_args *args) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .minorversion = args->client->cl_mvops->minor_version, |
| }; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_create_session(&xdr, args, &hdr); |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| /* |
| * a DESTROY_SESSION request |
| */ |
| static int nfs4_xdr_enc_destroy_session(struct rpc_rqst *req, uint32_t *p, |
| struct nfs4_session *session) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .minorversion = session->clp->cl_mvops->minor_version, |
| }; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_destroy_session(&xdr, session, &hdr); |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| /* |
| * a SEQUENCE request |
| */ |
| static int nfs4_xdr_enc_sequence(struct rpc_rqst *req, uint32_t *p, |
| struct nfs4_sequence_args *args) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .minorversion = nfs4_xdr_minorversion(args), |
| }; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_sequence(&xdr, args, &hdr); |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| /* |
| * a GET_LEASE_TIME request |
| */ |
| static int nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req, uint32_t *p, |
| struct nfs4_get_lease_time_args *args) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .minorversion = nfs4_xdr_minorversion(&args->la_seq_args), |
| }; |
| const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 }; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_sequence(&xdr, &args->la_seq_args, &hdr); |
| encode_putrootfh(&xdr, &hdr); |
| encode_fsinfo(&xdr, lease_bitmap, &hdr); |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| /* |
| * a RECLAIM_COMPLETE request |
| */ |
| static int nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req, uint32_t *p, |
| struct nfs41_reclaim_complete_args *args) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .minorversion = nfs4_xdr_minorversion(&args->seq_args) |
| }; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_sequence(&xdr, &args->seq_args, &hdr); |
| encode_reclaim_complete(&xdr, args, &hdr); |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| /* |
| * Encode GETDEVICEINFO request |
| */ |
| static int nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req, uint32_t *p, |
| struct nfs4_getdeviceinfo_args *args) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .minorversion = nfs4_xdr_minorversion(&args->seq_args), |
| }; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_sequence(&xdr, &args->seq_args, &hdr); |
| encode_getdeviceinfo(&xdr, args, &hdr); |
| |
| /* set up reply kvec. Subtract notification bitmap max size (2) |
| * so that notification bitmap is put in xdr_buf tail */ |
| xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2, |
| args->pdev->pages, args->pdev->pgbase, |
| args->pdev->pglen); |
| |
| encode_nops(&hdr); |
| return 0; |
| } |
| |
| /* |
| * Encode LAYOUTGET request |
| */ |
| static int nfs4_xdr_enc_layoutget(struct rpc_rqst *req, uint32_t *p, |
| struct nfs4_layoutget_args *args) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .minorversion = nfs4_xdr_minorversion(&args->seq_args), |
| }; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_sequence(&xdr, &args->seq_args, &hdr); |
| encode_putfh(&xdr, NFS_FH(args->inode), &hdr); |
| encode_layoutget(&xdr, args, &hdr); |
| encode_nops(&hdr); |
| return 0; |
| } |
| #endif /* CONFIG_NFS_V4_1 */ |
| |
| static void print_overflow_msg(const char *func, const struct xdr_stream *xdr) |
| { |
| dprintk("nfs: %s: prematurely hit end of receive buffer. " |
| "Remaining buffer length is %tu words.\n", |
| func, xdr->end - xdr->p); |
| } |
| |
| static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string) |
| { |
| __be32 *p; |
| |
| p = xdr_inline_decode(xdr, 4); |
| if (unlikely(!p)) |
| goto out_overflow; |
| *len = be32_to_cpup(p); |
| p = xdr_inline_decode(xdr, *len); |
| if (unlikely(!p)) |
| goto out_overflow; |
| *string = (char *)p; |
| return 0; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr) |
| { |
| __be32 *p; |
| |
| p = xdr_inline_decode(xdr, 8); |
| if (unlikely(!p)) |
| goto out_overflow; |
| hdr->status = be32_to_cpup(p++); |
| hdr->taglen = be32_to_cpup(p); |
| |
| p = xdr_inline_decode(xdr, hdr->taglen + 4); |
| if (unlikely(!p)) |
| goto out_overflow; |
| hdr->tag = (char *)p; |
| p += XDR_QUADLEN(hdr->taglen); |
| hdr->nops = be32_to_cpup(p); |
| if (unlikely(hdr->nops < 1)) |
| return nfs4_stat_to_errno(hdr->status); |
| return 0; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected) |
| { |
| __be32 *p; |
| uint32_t opnum; |
| int32_t nfserr; |
| |
| p = xdr_inline_decode(xdr, 8); |
| if (unlikely(!p)) |
| goto out_overflow; |
| opnum = be32_to_cpup(p++); |
| if (opnum != expected) { |
| dprintk("nfs: Server returned operation" |
| " %d but we issued a request for %d\n", |
| opnum, expected); |
| return -EIO; |
| } |
| nfserr = be32_to_cpup(p); |
| if (nfserr != NFS_OK) |
| return nfs4_stat_to_errno(nfserr); |
| return 0; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| /* Dummy routine */ |
| static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp) |
| { |
| __be32 *p; |
| unsigned int strlen; |
| char *str; |
| |
| p = xdr_inline_decode(xdr, 12); |
| if (likely(p)) |
| return decode_opaque_inline(xdr, &strlen, &str); |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap) |
| { |
| uint32_t bmlen; |
| __be32 *p; |
| |
| p = xdr_inline_decode(xdr, 4); |
| if (unlikely(!p)) |
| goto out_overflow; |
| bmlen = be32_to_cpup(p); |
| |
| bitmap[0] = bitmap[1] = 0; |
| p = xdr_inline_decode(xdr, (bmlen << 2)); |
| if (unlikely(!p)) |
| goto out_overflow; |
| if (bmlen > 0) { |
| bitmap[0] = be32_to_cpup(p++); |
| if (bmlen > 1) |
| bitmap[1] = be32_to_cpup(p); |
| } |
| return 0; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, __be32 **savep) |
| { |
| __be32 *p; |
| |
| p = xdr_inline_decode(xdr, 4); |
| if (unlikely(!p)) |
| goto out_overflow; |
| *attrlen = be32_to_cpup(p); |
| *savep = xdr->p; |
| return 0; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask) |
| { |
| if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) { |
| int ret; |
| ret = decode_attr_bitmap(xdr, bitmask); |
| if (unlikely(ret < 0)) |
| return ret; |
| bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS; |
| } else |
| bitmask[0] = bitmask[1] = 0; |
| dprintk("%s: bitmask=%08x:%08x\n", __func__, bitmask[0], bitmask[1]); |
| return 0; |
| } |
| |
| static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type) |
| { |
| __be32 *p; |
| int ret = 0; |
| |
| *type = 0; |
| if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U))) |
| return -EIO; |
| if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) { |
| p = xdr_inline_decode(xdr, 4); |
| if (unlikely(!p)) |
| goto out_overflow; |
| *type = be32_to_cpup(p); |
| if (*type < NF4REG || *type > NF4NAMEDATTR) { |
| dprintk("%s: bad type %d\n", __func__, *type); |
| return -EIO; |
| } |
| bitmap[0] &= ~FATTR4_WORD0_TYPE; |
| ret = NFS_ATTR_FATTR_TYPE; |
| } |
| dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]); |
| return ret; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change) |
| { |
| __be32 *p; |
| int ret = 0; |
| |
| *change = 0; |
| if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U))) |
| return -EIO; |
| if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) { |
| p = xdr_inline_decode(xdr, 8); |
| if (unlikely(!p)) |
| goto out_overflow; |
| xdr_decode_hyper(p, change); |
| bitmap[0] &= ~FATTR4_WORD0_CHANGE; |
| ret = NFS_ATTR_FATTR_CHANGE; |
| } |
| dprintk("%s: change attribute=%Lu\n", __func__, |
| (unsigned long long)*change); |
| return ret; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size) |
| { |
| __be32 *p; |
| int ret = 0; |
| |
| *size = 0; |
| if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U))) |
| return -EIO; |
| if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) { |
| p = xdr_inline_decode(xdr, 8); |
| if (unlikely(!p)) |
| goto out_overflow; |
| xdr_decode_hyper(p, size); |
| bitmap[0] &= ~FATTR4_WORD0_SIZE; |
| ret = NFS_ATTR_FATTR_SIZE; |
| } |
| dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size); |
| return ret; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) |
| { |
| __be32 *p; |
| |
| *res = 0; |
| if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U))) |
| return -EIO; |
| if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) { |
| p = xdr_inline_decode(xdr, 4); |
| if (unlikely(!p)) |
| goto out_overflow; |
| *res = be32_to_cpup(p); |
| bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT; |
| } |
| dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true"); |
| return 0; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) |
| { |
| __be32 *p; |
| |
| *res = 0; |
| if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U))) |
| return -EIO; |
| if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) { |
| p = xdr_inline_decode(xdr, 4); |
| if (unlikely(!p)) |
| goto out_overflow; |
| *res = be32_to_cpup(p); |
| bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT; |
| } |
| dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true"); |
| return 0; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid) |
| { |
| __be32 *p; |
| int ret = 0; |
| |
| fsid->major = 0; |
| fsid->minor = 0; |
| if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U))) |
| return -EIO; |
| if (likely(bitmap[0] & FATTR4_WORD0_FSID)) { |
| p = xdr_inline_decode(xdr, 16); |
| if (unlikely(!p)) |
| goto out_overflow; |
| p = xdr_decode_hyper(p, &fsid->major); |
| xdr_decode_hyper(p, &fsid->minor); |
| bitmap[0] &= ~FATTR4_WORD0_FSID; |
| ret = NFS_ATTR_FATTR_FSID; |
| } |
| dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__, |
| (unsigned long long)fsid->major, |
| (unsigned long long)fsid->minor); |
| return ret; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) |
| { |
| __be32 *p; |
| |
| *res = 60; |
| if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U))) |
| return -EIO; |
| if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) { |
| p = xdr_inline_decode(xdr, 4); |
| if (unlikely(!p)) |
| goto out_overflow; |
| *res = be32_to_cpup(p); |
| bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME; |
| } |
| dprintk("%s: file size=%u\n", __func__, (unsigned int)*res); |
| return 0; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap) |
| { |
| __be32 *p; |
| |
| if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U))) |
| return -EIO; |
| if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) { |
| p = xdr_inline_decode(xdr, 4); |
| if (unlikely(!p)) |
| goto out_overflow; |
| bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR; |
| } |
| return 0; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh) |
| { |
| __be32 *p; |
| int len; |
| |
| if (fh != NULL) |
| memset(fh, 0, sizeof(*fh)); |
| |
| if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U))) |
| return -EIO; |
| if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) { |
| p = xdr_inline_decode(xdr, 4); |
| if (unlikely(!p)) |
| goto out_overflow; |
| len = be32_to_cpup(p); |
| if (len > NFS4_FHSIZE) |
| return -EIO; |
| p = xdr_inline_decode(xdr, len); |
| if (unlikely(!p)) |
| goto out_overflow; |
| if (fh != NULL) { |
| memcpy(fh->data, p, len); |
| fh->size = len; |
| } |
| bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE; |
| } |
| return 0; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) |
| { |
| __be32 *p; |
| |
| *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL; |
| if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U))) |
| return -EIO; |
| if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) { |
| p = xdr_inline_decode(xdr, 4); |
| if (unlikely(!p)) |
| goto out_overflow; |
| *res = be32_to_cpup(p); |
| bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT; |
| } |
| dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res); |
| return 0; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid) |
| { |
| __be32 *p; |
| int ret = 0; |
| |
| *fileid = 0; |
| if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U))) |
| return -EIO; |
| if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) { |
| p = xdr_inline_decode(xdr, 8); |
| if (unlikely(!p)) |
| goto out_overflow; |
| xdr_decode_hyper(p, fileid); |
| bitmap[0] &= ~FATTR4_WORD0_FILEID; |
| ret = NFS_ATTR_FATTR_FILEID; |
| } |
| dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid); |
| return ret; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid) |
| { |
| __be32 *p; |
| int ret = 0; |
| |
| *fileid = 0; |
| if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U))) |
| return -EIO; |
| if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) { |
| p = xdr_inline_decode(xdr, 8); |
| if (unlikely(!p)) |
| goto out_overflow; |
| xdr_decode_hyper(p, fileid); |
| bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID; |
| ret = NFS_ATTR_FATTR_FILEID; |
| } |
| dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid); |
| return ret; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) |
| { |
| __be32 *p; |
| int status = 0; |
| |
| *res = 0; |
| if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U))) |
| return -EIO; |
| if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) { |
| p = xdr_inline_decode(xdr, 8); |
| if (unlikely(!p)) |
| goto out_overflow; |
| xdr_decode_hyper(p, res); |
| bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL; |
| } |
| dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res); |
| return status; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) |
| { |
| __be32 *p; |
| int status = 0; |
| |
| *res = 0; |
| if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U))) |
| return -EIO; |
| if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) { |
| p = xdr_inline_decode(xdr, 8); |
| if (unlikely(!p)) |
| goto out_overflow; |
| xdr_decode_hyper(p, res); |
| bitmap[0] &= ~FATTR4_WORD0_FILES_FREE; |
| } |
| dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res); |
| return status; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) |
| { |
| __be32 *p; |
| int status = 0; |
| |
| *res = 0; |
| if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U))) |
| return -EIO; |
| if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) { |
| p = xdr_inline_decode(xdr, 8); |
| if (unlikely(!p)) |
| goto out_overflow; |
| xdr_decode_hyper(p, res); |
| bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL; |
| } |
| dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res); |
| return status; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path) |
| { |
| u32 n; |
| __be32 *p; |
| int status = 0; |
| |
| p = xdr_inline_decode(xdr, 4); |
| if (unlikely(!p)) |
| goto out_overflow; |
| n = be32_to_cpup(p); |
| if (n == 0) |
| goto root_path; |
| dprintk("path "); |
| path->ncomponents = 0; |
| while (path->ncomponents < n) { |
| struct nfs4_string *component = &path->components[path->ncomponents]; |
| status = decode_opaque_inline(xdr, &component->len, &component->data); |
| if (unlikely(status != 0)) |
| goto out_eio; |
| if (path->ncomponents != n) |
| dprintk("/"); |
| dprintk("%s", component->data); |
| if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS) |
| path->ncomponents++; |
| else { |
| dprintk("cannot parse %d components in path\n", n); |
| goto out_eio; |
| } |
| } |
| out: |
| dprintk("\n"); |
| return status; |
| root_path: |
| /* a root pathname is sent as a zero component4 */ |
| path->ncomponents = 1; |
| path->components[0].len=0; |
| path->components[0].data=NULL; |
| dprintk("path /\n"); |
| goto out; |
| out_eio: |
| dprintk(" status %d", status); |
| status = -EIO; |
| goto out; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res) |
| { |
| int n; |
| __be32 *p; |
| int status = -EIO; |
| |
| if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U))) |
| goto out; |
| status = 0; |
| if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS))) |
| goto out; |
| dprintk("%s: fsroot ", __func__); |
| status = decode_pathname(xdr, &res->fs_path); |
| if (unlikely(status != 0)) |
| goto out; |
| p = xdr_inline_decode(xdr, 4); |
| if (unlikely(!p)) |
| goto out_overflow; |
| n = be32_to_cpup(p); |
| if (n <= 0) |
| goto out_eio; |
| res->nlocations = 0; |
| while (res->nlocations < n) { |
| u32 m; |
| struct nfs4_fs_location *loc = &res->locations[res->nlocations]; |
| |
| p = xdr_inline_decode(xdr, 4); |
| if (unlikely(!p)) |
| goto out_overflow; |
| m = be32_to_cpup(p); |
| |
| loc->nservers = 0; |
| dprintk("%s: servers ", __func__); |
| while (loc->nservers < m) { |
| struct nfs4_string *server = &loc->servers[loc->nservers]; |
| status = decode_opaque_inline(xdr, &server->len, &server->data); |
| if (unlikely(status != 0)) |
| goto out_eio; |
| dprintk("%s ", server->data); |
| if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS) |
| loc->nservers++; |
| else { |
| unsigned int i; |
| dprintk("%s: using first %u of %u servers " |
| "returned for location %u\n", |
| __func__, |
| NFS4_FS_LOCATION_MAXSERVERS, |
| m, res->nlocations); |
| for (i = loc->nservers; i < m; i++) { |
| unsigned int len; |
| char *data; |
| status = decode_opaque_inline(xdr, &len, &data); |
| if (unlikely(status != 0)) |
| goto out_eio; |
| } |
| } |
| } |
| status = decode_pathname(xdr, &loc->rootpath); |
| if (unlikely(status != 0)) |
| goto out_eio; |
| if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES) |
| res->nlocations++; |
| } |
| if (res->nlocations != 0) |
| status = NFS_ATTR_FATTR_V4_REFERRAL; |
| out: |
| dprintk("%s: fs_locations done, error = %d\n", __func__, status); |
| return status; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| out_eio: |
| status = -EIO; |
| goto out; |
| } |
| |
| static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) |
| { |
| __be32 *p; |
| int status = 0; |
| |
| *res = 0; |
| if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U))) |
| return -EIO; |
| if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) { |
| p = xdr_inline_decode(xdr, 8); |
| if (unlikely(!p)) |
| goto out_overflow; |
| xdr_decode_hyper(p, res); |
| bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE; |
| } |
| dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res); |
| return status; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink) |
| { |
| __be32 *p; |
| int status = 0; |
| |
| *maxlink = 1; |
| if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U))) |
| return -EIO; |
| if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) { |
| p = xdr_inline_decode(xdr, 4); |
| if (unlikely(!p)) |
| goto out_overflow; |
| *maxlink = be32_to_cpup(p); |
| bitmap[0] &= ~FATTR4_WORD0_MAXLINK; |
| } |
| dprintk("%s: maxlink=%u\n", __func__, *maxlink); |
| return status; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname) |
| { |
| __be32 *p; |
| int status = 0; |
| |
| *maxname = 1024; |
| if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U))) |
| return -EIO; |
| if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) { |
| p = xdr_inline_decode(xdr, 4); |
| if (unlikely(!p)) |
| goto out_overflow; |
| *maxname = be32_to_cpup(p); |
| bitmap[0] &= ~FATTR4_WORD0_MAXNAME; |
| } |
| dprintk("%s: maxname=%u\n", __func__, *maxname); |
| return status; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) |
| { |
| __be32 *p; |
| int status = 0; |
| |
| *res = 1024; |
| if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U))) |
| return -EIO; |
| if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) { |
| uint64_t maxread; |
| p = xdr_inline_decode(xdr, 8); |
| if (unlikely(!p)) |
| goto out_overflow; |
| xdr_decode_hyper(p, &maxread); |
| if (maxread > 0x7FFFFFFF) |
| maxread = 0x7FFFFFFF; |
| *res = (uint32_t)maxread; |
| bitmap[0] &= ~FATTR4_WORD0_MAXREAD; |
| } |
| dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res); |
| return status; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) |
| { |
| __be32 *p; |
| int status = 0; |
| |
| *res = 1024; |
| if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U))) |
| return -EIO; |
| if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) { |
| uint64_t maxwrite; |
| p = xdr_inline_decode(xdr, 8); |
| if (unlikely(!p)) |
| goto out_overflow; |
| xdr_decode_hyper(p, &maxwrite); |
| if (maxwrite > 0x7FFFFFFF) |
| maxwrite = 0x7FFFFFFF; |
| *res = (uint32_t)maxwrite; |
| bitmap[0] &= ~FATTR4_WORD0_MAXWRITE; |
| } |
| dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res); |
| return status; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode) |
| { |
| uint32_t tmp; |
| __be32 *p; |
| int ret = 0; |
| |
| *mode = 0; |
| if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U))) |
| return -EIO; |
| if (likely(bitmap[1] & FATTR4_WORD1_MODE)) { |
| p = xdr_inline_decode(xdr, 4); |
| if (unlikely(!p)) |
| goto out_overflow; |
| tmp = be32_to_cpup(p); |
| *mode = tmp & ~S_IFMT; |
| bitmap[1] &= ~FATTR4_WORD1_MODE; |
| ret = NFS_ATTR_FATTR_MODE; |
| } |
| dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode); |
| return ret; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink) |
| { |
| __be32 *p; |
| int ret = 0; |
| |
| *nlink = 1; |
| if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U))) |
| return -EIO; |
| if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) { |
| p = xdr_inline_decode(xdr, 4); |
| if (unlikely(!p)) |
| goto out_overflow; |
| *nlink = be32_to_cpup(p); |
| bitmap[1] &= ~FATTR4_WORD1_NUMLINKS; |
| ret = NFS_ATTR_FATTR_NLINK; |
| } |
| dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink); |
| return ret; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, |
| struct nfs_client *clp, uint32_t *uid, int may_sleep) |
| { |
| uint32_t len; |
| __be32 *p; |
| int ret = 0; |
| |
| *uid = -2; |
| if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U))) |
| return -EIO; |
| if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) { |
| p = xdr_inline_decode(xdr, 4); |
| if (unlikely(!p)) |
| goto out_overflow; |
| len = be32_to_cpup(p); |
| p = xdr_inline_decode(xdr, len); |
| if (unlikely(!p)) |
| goto out_overflow; |
| if (!may_sleep) { |
| /* do nothing */ |
| } else if (len < XDR_MAX_NETOBJ) { |
| if (nfs_map_name_to_uid(clp, (char *)p, len, uid) == 0) |
| ret = NFS_ATTR_FATTR_OWNER; |
| else |
| dprintk("%s: nfs_map_name_to_uid failed!\n", |
| __func__); |
| } else |
| dprintk("%s: name too long (%u)!\n", |
| __func__, len); |
| bitmap[1] &= ~FATTR4_WORD1_OWNER; |
| } |
| dprintk("%s: uid=%d\n", __func__, (int)*uid); |
| return ret; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, |
| struct nfs_client *clp, uint32_t *gid, int may_sleep) |
| { |
| uint32_t len; |
| __be32 *p; |
| int ret = 0; |
| |
| *gid = -2; |
| if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U))) |
| return -EIO; |
| if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) { |
| p = xdr_inline_decode(xdr, 4); |
| if (unlikely(!p)) |
| goto out_overflow; |
| len = be32_to_cpup(p); |
| p = xdr_inline_decode(xdr, len); |
| if (unlikely(!p)) |
| goto out_overflow; |
| if (!may_sleep) { |
| /* do nothing */ |
| } else if (len < XDR_MAX_NETOBJ) { |
| if (nfs_map_group_to_gid(clp, (char *)p, len, gid) == 0) |
| ret = NFS_ATTR_FATTR_GROUP; |
| else |
| dprintk("%s: nfs_map_group_to_gid failed!\n", |
| __func__); |
| } else |
| dprintk("%s: name too long (%u)!\n", |
| __func__, len); |
| bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP; |
| } |
| dprintk("%s: gid=%d\n", __func__, (int)*gid); |
| return ret; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev) |
| { |
| uint32_t major = 0, minor = 0; |
| __be32 *p; |
| int ret = 0; |
| |
| *rdev = MKDEV(0,0); |
| if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U))) |
| return -EIO; |
| if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) { |
| dev_t tmp; |
| |
| p = xdr_inline_decode(xdr, 8); |
| if (unlikely(!p)) |
| goto out_overflow; |
| major = be32_to_cpup(p++); |
| minor = be32_to_cpup(p); |
| tmp = MKDEV(major, minor); |
| if (MAJOR(tmp) == major && MINOR(tmp) == minor) |
| *rdev = tmp; |
| bitmap[1] &= ~ FATTR4_WORD1_RAWDEV; |
| ret = NFS_ATTR_FATTR_RDEV; |
| } |
| dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor); |
| return ret; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) |
| { |
| __be32 *p; |
| int status = 0; |
| |
| *res = 0; |
| if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U))) |
| return -EIO; |
| if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) { |
| p = xdr_inline_decode(xdr, 8); |
| if (unlikely(!p)) |
| goto out_overflow; |
| xdr_decode_hyper(p, res); |
| bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL; |
| } |
| dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res); |
| return status; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) |
| { |
| __be32 *p; |
| int status = 0; |
| |
| *res = 0; |
| if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U))) |
| return -EIO; |
| if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) { |
| p = xdr_inline_decode(xdr, 8); |
| if (unlikely(!p)) |
| goto out_overflow; |
| xdr_decode_hyper(p, res); |
| bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE; |
| } |
| dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res); |
| return status; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) |
| { |
| __be32 *p; |
| int status = 0; |
| |
| *res = 0; |
| if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U))) |
| return -EIO; |
| if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) { |
| p = xdr_inline_decode(xdr, 8); |
| if (unlikely(!p)) |
| goto out_overflow; |
| xdr_decode_hyper(p, res); |
| bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL; |
| } |
| dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res); |
| return status; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used) |
| { |
| __be32 *p; |
| int ret = 0; |
| |
| *used = 0; |
| if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U))) |
| return -EIO; |
| if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) { |
| p = xdr_inline_decode(xdr, 8); |
| if (unlikely(!p)) |
| goto out_overflow; |
| xdr_decode_hyper(p, used); |
| bitmap[1] &= ~FATTR4_WORD1_SPACE_USED; |
| ret = NFS_ATTR_FATTR_SPACE_USED; |
| } |
| dprintk("%s: space used=%Lu\n", __func__, |
| (unsigned long long)*used); |
| return ret; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time) |
| { |
| __be32 *p; |
| uint64_t sec; |
| uint32_t nsec; |
| |
| p = xdr_inline_decode(xdr, 12); |
| if (unlikely(!p)) |
| goto out_overflow; |
| p = xdr_decode_hyper(p, &sec); |
| nsec = be32_to_cpup(p); |
| time->tv_sec = (time_t)sec; |
| time->tv_nsec = (long)nsec; |
| return 0; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time) |
| { |
| int status = 0; |
| |
| time->tv_sec = 0; |
| time->tv_nsec = 0; |
| if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U))) |
| return -EIO; |
| if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) { |
| status = decode_attr_time(xdr, time); |
| if (status == 0) |
| status = NFS_ATTR_FATTR_ATIME; |
| bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS; |
| } |
| dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec); |
| return status; |
| } |
| |
| static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time) |
| { |
| int status = 0; |
| |
| time->tv_sec = 0; |
| time->tv_nsec = 0; |
| if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U))) |
| return -EIO; |
| if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) { |
| status = decode_attr_time(xdr, time); |
| if (status == 0) |
| status = NFS_ATTR_FATTR_CTIME; |
| bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA; |
| } |
| dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec); |
| return status; |
| } |
| |
| static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap, |
| struct timespec *time) |
| { |
| int status = 0; |
| |
| time->tv_sec = 0; |
| time->tv_nsec = 0; |
| if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U))) |
| return -EIO; |
| if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) { |
| status = decode_attr_time(xdr, time); |
| bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA; |
| } |
| dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec, |
| (long)time->tv_nsec); |
| return status; |
| } |
| |
| static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time) |
| { |
| int status = 0; |
| |
| time->tv_sec = 0; |
| time->tv_nsec = 0; |
| if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U))) |
| return -EIO; |
| if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) { |
| status = decode_attr_time(xdr, time); |
| if (status == 0) |
| status = NFS_ATTR_FATTR_MTIME; |
| bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY; |
| } |
| dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec); |
| return status; |
| } |
| |
| static int verify_attr_len(struct xdr_stream *xdr, __be32 *savep, uint32_t attrlen) |
| { |
| unsigned int attrwords = XDR_QUADLEN(attrlen); |
| unsigned int nwords = xdr->p - savep; |
| |
| if (unlikely(attrwords != nwords)) { |
| dprintk("%s: server returned incorrect attribute length: " |
| "%u %c %u\n", |
| __func__, |
| attrwords << 2, |
| (attrwords < nwords) ? '<' : '>', |
| nwords << 2); |
| return -EIO; |
| } |
| return 0; |
| } |
| |
| static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) |
| { |
| __be32 *p; |
| |
| p = xdr_inline_decode(xdr, 20); |
| if (unlikely(!p)) |
| goto out_overflow; |
| cinfo->atomic = be32_to_cpup(p++); |
| p = xdr_decode_hyper(p, &cinfo->before); |
| xdr_decode_hyper(p, &cinfo->after); |
| return 0; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access) |
| { |
| __be32 *p; |
| uint32_t supp, acc; |
| int status; |
| |
| status = decode_op_hdr(xdr, OP_ACCESS); |
| if (status) |
| return status; |
| p = xdr_inline_decode(xdr, 8); |
| if (unlikely(!p)) |
| goto out_overflow; |
| supp = be32_to_cpup(p++); |
| acc = be32_to_cpup(p); |
| access->supported = supp; |
| access->access = acc; |
| return 0; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len) |
| { |
| __be32 *p; |
| |
| p = xdr_inline_decode(xdr, len); |
| if (likely(p)) { |
| memcpy(buf, p, len); |
| return 0; |
| } |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) |
| { |
| return decode_opaque_fixed(xdr, stateid->data, NFS4_STATEID_SIZE); |
| } |
| |
| static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res) |
| { |
| int status; |
| |
| status = decode_op_hdr(xdr, OP_CLOSE); |
| if (status != -EIO) |
| nfs_increment_open_seqid(status, res->seqid); |
| if (!status) |
| status = decode_stateid(xdr, &res->stateid); |
| return status; |
| } |
| |
| static int decode_verifier(struct xdr_stream *xdr, void *verifier) |
| { |
| return decode_opaque_fixed(xdr, verifier, 8); |
| } |
| |
| static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res) |
| { |
| int status; |
| |
| status = decode_op_hdr(xdr, OP_COMMIT); |
| if (!status) |
| status = decode_verifier(xdr, res->verf->verifier); |
| return status; |
| } |
| |
| static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) |
| { |
| __be32 *p; |
| uint32_t bmlen; |
| int status; |
| |
| status = decode_op_hdr(xdr, OP_CREATE); |
| if (status) |
| return status; |
| if ((status = decode_change_info(xdr, cinfo))) |
| return status; |
| p = xdr_inline_decode(xdr, 4); |
| if (unlikely(!p)) |
| goto out_overflow; |
| bmlen = be32_to_cpup(p); |
| p = xdr_inline_decode(xdr, bmlen << 2); |
| if (likely(p)) |
| return 0; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res) |
| { |
| __be32 *savep; |
| uint32_t attrlen, bitmap[2] = {0}; |
| int status; |
| |
| if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) |
| goto xdr_error; |
| if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) |
| goto xdr_error; |
| if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) |
| goto xdr_error; |
| if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0) |
| goto xdr_error; |
| if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0) |
| goto xdr_error; |
| if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0) |
| goto xdr_error; |
| if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0) |
| goto xdr_error; |
| status = verify_attr_len(xdr, savep, attrlen); |
| xdr_error: |
| dprintk("%s: xdr returned %d!\n", __func__, -status); |
| return status; |
| } |
| |
| static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat) |
| { |
| __be32 *savep; |
| uint32_t attrlen, bitmap[2] = {0}; |
| int status; |
| |
| if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) |
| goto xdr_error; |
| if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) |
| goto xdr_error; |
| if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) |
| goto xdr_error; |
| |
| if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0) |
| goto xdr_error; |
| if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0) |
| goto xdr_error; |
| if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0) |
| goto xdr_error; |
| if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0) |
| goto xdr_error; |
| if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0) |
| goto xdr_error; |
| if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0) |
| goto xdr_error; |
| |
| status = verify_attr_len(xdr, savep, attrlen); |
| xdr_error: |
| dprintk("%s: xdr returned %d!\n", __func__, -status); |
| return status; |
| } |
| |
| static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf) |
| { |
| __be32 *savep; |
| uint32_t attrlen, bitmap[2] = {0}; |
| int status; |
| |
| if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) |
| goto xdr_error; |
| if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) |
| goto xdr_error; |
| if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) |
| goto xdr_error; |
| |
| if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0) |
| goto xdr_error; |
| if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0) |
| goto xdr_error; |
| |
| status = verify_attr_len(xdr, savep, attrlen); |
| xdr_error: |
| dprintk("%s: xdr returned %d!\n", __func__, -status); |
| return status; |
| } |
| |
| static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap, |
| struct nfs_fattr *fattr, struct nfs_fh *fh, |
| const struct nfs_server *server, int may_sleep) |
| { |
| int status; |
| umode_t fmode = 0; |
| uint64_t fileid; |
| uint32_t type; |
| |
| status = decode_attr_type(xdr, bitmap, &type); |
| if (status < 0) |
| goto xdr_error; |
| fattr->mode = 0; |
| if (status != 0) { |
| fattr->mode |= nfs_type2fmt[type]; |
| fattr->valid |= status; |
| } |
| |
| status = decode_attr_change(xdr, bitmap, &fattr->change_attr); |
| if (status < 0) |
| goto xdr_error; |
| fattr->valid |= status; |
| |
| status = decode_attr_size(xdr, bitmap, &fattr->size); |
| if (status < 0) |
| goto xdr_error; |
| fattr->valid |= status; |
| |
| status = decode_attr_fsid(xdr, bitmap, &fattr->fsid); |
| if (status < 0) |
| goto xdr_error; |
| fattr->valid |= status; |
| |
| status = decode_attr_error(xdr, bitmap); |
| if (status < 0) |
| goto xdr_error; |
| |
| status = decode_attr_filehandle(xdr, bitmap, fh); |
| if (status < 0) |
| goto xdr_error; |
| |
| status = decode_attr_fileid(xdr, bitmap, &fattr->fileid); |
| if (status < 0) |
| goto xdr_error; |
| fattr->valid |= status; |
| |
| status = decode_attr_fs_locations(xdr, bitmap, container_of(fattr, |
| struct nfs4_fs_locations, |
| fattr)); |
| if (status < 0) |
| goto xdr_error; |
| fattr->valid |= status; |
| |
| status = decode_attr_mode(xdr, bitmap, &fmode); |
| if (status < 0) |
| goto xdr_error; |
| if (status != 0) { |
| fattr->mode |= fmode; |
| fattr->valid |= status; |
| } |
| |
| status = decode_attr_nlink(xdr, bitmap, &fattr->nlink); |
| if (status < 0) |
| goto xdr_error; |
| fattr->valid |= status; |
| |
| status = decode_attr_owner(xdr, bitmap, server->nfs_client, |
| &fattr->uid, may_sleep); |
| if (status < 0) |
| goto xdr_error; |
| fattr->valid |= status; |
| |
| status = decode_attr_group(xdr, bitmap, server->nfs_client, |
| &fattr->gid, may_sleep); |
| if (status < 0) |
| goto xdr_error; |
| fattr->valid |= status; |
| |
| status = decode_attr_rdev(xdr, bitmap, &fattr->rdev); |
| if (status < 0) |
| goto xdr_error; |
| fattr->valid |= status; |
| |
| status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used); |
| if (status < 0) |
| goto xdr_error; |
| fattr->valid |= status; |
| |
| status = decode_attr_time_access(xdr, bitmap, &fattr->atime); |
| if (status < 0) |
| goto xdr_error; |
| fattr->valid |= status; |
| |
| status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime); |
| if (status < 0) |
| goto xdr_error; |
| fattr->valid |= status; |
| |
| status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime); |
| if (status < 0) |
| goto xdr_error; |
| fattr->valid |= status; |
| |
| status = decode_attr_mounted_on_fileid(xdr, bitmap, &fileid); |
| if (status < 0) |
| goto xdr_error; |
| if (status != 0 && !(fattr->valid & status)) { |
| fattr->fileid = fileid; |
| fattr->valid |= status; |
| } |
| |
| xdr_error: |
| dprintk("%s: xdr returned %d\n", __func__, -status); |
| return status; |
| } |
| |
| static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr, |
| struct nfs_fh *fh, const struct nfs_server *server, int may_sleep) |
| { |
| __be32 *savep; |
| uint32_t attrlen, |
| bitmap[2] = {0}; |
| int status; |
| |
| status = decode_op_hdr(xdr, OP_GETATTR); |
| if (status < 0) |
| goto xdr_error; |
| |
| status = decode_attr_bitmap(xdr, bitmap); |
| if (status < 0) |
| goto xdr_error; |
| |
| status = decode_attr_length(xdr, &attrlen, &savep); |
| if (status < 0) |
| goto xdr_error; |
| |
| status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, server, may_sleep); |
| if (status < 0) |
| goto xdr_error; |
| |
| status = verify_attr_len(xdr, savep, attrlen); |
| xdr_error: |
| dprintk("%s: xdr returned %d\n", __func__, -status); |
| return status; |
| } |
| |
| static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, |
| const struct nfs_server *server, int may_sleep) |
| { |
| return decode_getfattr_generic(xdr, fattr, NULL, server, may_sleep); |
| } |
| |
| /* |
| * Decode potentially multiple layout types. Currently we only support |
| * one layout driver per file system. |
| */ |
| static int decode_first_pnfs_layout_type(struct xdr_stream *xdr, |
| uint32_t *layouttype) |
| { |
| uint32_t *p; |
| int num; |
| |
| p = xdr_inline_decode(xdr, 4); |
| if (unlikely(!p)) |
| goto out_overflow; |
| num = be32_to_cpup(p); |
| |
| /* pNFS is not supported by the underlying file system */ |
| if (num == 0) { |
| *layouttype = 0; |
| return 0; |
| } |
| if (num > 1) |
| printk(KERN_INFO "%s: Warning: Multiple pNFS layout drivers " |
| "per filesystem not supported\n", __func__); |
| |
| /* Decode and set first layout type, move xdr->p past unused types */ |
| p = xdr_inline_decode(xdr, num * 4); |
| if (unlikely(!p)) |
| goto out_overflow; |
| *layouttype = be32_to_cpup(p); |
| return 0; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| /* |
| * The type of file system exported. |
| * Note we must ensure that layouttype is set in any non-error case. |
| */ |
| static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap, |
| uint32_t *layouttype) |
| { |
| int status = 0; |
| |
| dprintk("%s: bitmap is %x\n", __func__, bitmap[1]); |
| if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U))) |
| return -EIO; |
| if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) { |
| status = decode_first_pnfs_layout_type(xdr, layouttype); |
| bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES; |
| } else |
| *layouttype = 0; |
| return status; |
| } |
| |
| static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo) |
| { |
| __be32 *savep; |
| uint32_t attrlen, bitmap[2]; |
| int status; |
| |
| if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) |
| goto xdr_error; |
| if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) |
| goto xdr_error; |
| if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) |
| goto xdr_error; |
| |
| fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */ |
| |
| if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0) |
| goto xdr_error; |
| if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0) |
| goto xdr_error; |
| if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0) |
| goto xdr_error; |
| fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax; |
| if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0) |
| goto xdr_error; |
| fsinfo->wtpref = fsinfo->wtmax; |
| status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta); |
| if (status != 0) |
| goto xdr_error; |
| status = decode_attr_pnfstype(xdr, bitmap, &fsinfo->layouttype); |
| if (status != 0) |
| goto xdr_error; |
| |
| status = verify_attr_len(xdr, savep, attrlen); |
| xdr_error: |
| dprintk("%s: xdr returned %d!\n", __func__, -status); |
| return status; |
| } |
| |
| static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh) |
| { |
| __be32 *p; |
| uint32_t len; |
| int status; |
| |
| /* Zero handle first to allow comparisons */ |
| memset(fh, 0, sizeof(*fh)); |
| |
| status = decode_op_hdr(xdr, OP_GETFH); |
| if (status) |
| return status; |
| |
| p = xdr_inline_decode(xdr, 4); |
| if (unlikely(!p)) |
| goto out_overflow; |
| len = be32_to_cpup(p); |
| if (len > NFS4_FHSIZE) |
| return -EIO; |
| fh->size = len; |
| p = xdr_inline_decode(xdr, len); |
| if (unlikely(!p)) |
| goto out_overflow; |
| memcpy(fh->data, p, len); |
| return 0; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) |
| { |
| int status; |
| |
| status = decode_op_hdr(xdr, OP_LINK); |
| if (status) |
| return status; |
| return decode_change_info(xdr, cinfo); |
| } |
| |
| /* |
| * We create the owner, so we know a proper owner.id length is 4. |
| */ |
| static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl) |
| { |
| uint64_t offset, length, clientid; |
| __be32 *p; |
| uint32_t namelen, type; |
| |
| p = xdr_inline_decode(xdr, 32); /* read 32 bytes */ |
| if (unlikely(!p)) |
| goto out_overflow; |
| p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */ |
| p = xdr_decode_hyper(p, &length); |
| type = be32_to_cpup(p++); /* 4 byte read */ |
| if (fl != NULL) { /* manipulate file lock */ |
| fl->fl_start = (loff_t)offset; |
| fl->fl_end = fl->fl_start + (loff_t)length - 1; |
| if (length == ~(uint64_t)0) |
| fl->fl_end = OFFSET_MAX; |
| fl->fl_type = F_WRLCK; |
| if (type & 1) |
| fl->fl_type = F_RDLCK; |
| fl->fl_pid = 0; |
| } |
| p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */ |
| namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */ |
| p = xdr_inline_decode(xdr, namelen); /* variable size field */ |
| if (likely(p)) |
| return -NFS4ERR_DENIED; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res) |
| { |
| int status; |
| |
| status = decode_op_hdr(xdr, OP_LOCK); |
| if (status == -EIO) |
| goto out; |
| if (status == 0) { |
| status = decode_stateid(xdr, &res->stateid); |
| if (unlikely(status)) |
| goto out; |
| } else if (status == -NFS4ERR_DENIED) |
| status = decode_lock_denied(xdr, NULL); |
| if (res->open_seqid != NULL) |
| nfs_increment_open_seqid(status, res->open_seqid); |
| nfs_increment_lock_seqid(status, res->lock_seqid); |
| out: |
| return status; |
| } |
| |
| static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res) |
| { |
| int status; |
| status = decode_op_hdr(xdr, OP_LOCKT); |
| if (status == -NFS4ERR_DENIED) |
| return decode_lock_denied(xdr, res->denied); |
| return status; |
| } |
| |
| static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res) |
| { |
| int status; |
| |
| status = decode_op_hdr(xdr, OP_LOCKU); |
| if (status != -EIO) |
| nfs_increment_lock_seqid(status, res->seqid); |
| if (status == 0) |
| status = decode_stateid(xdr, &res->stateid); |
| return status; |
| } |
| |
| static int decode_release_lockowner(struct xdr_stream *xdr) |
| { |
| return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER); |
| } |
| |
| static int decode_lookup(struct xdr_stream *xdr) |
| { |
| return decode_op_hdr(xdr, OP_LOOKUP); |
| } |
| |
| /* This is too sick! */ |
| static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize) |
| { |
| __be32 *p; |
| uint32_t limit_type, nblocks, blocksize; |
| |
| p = xdr_inline_decode(xdr, 12); |
| if (unlikely(!p)) |
| goto out_overflow; |
| limit_type = be32_to_cpup(p++); |
| switch (limit_type) { |
| case 1: |
| xdr_decode_hyper(p, maxsize); |
| break; |
| case 2: |
| nblocks = be32_to_cpup(p++); |
| blocksize = be32_to_cpup(p); |
| *maxsize = (uint64_t)nblocks * (uint64_t)blocksize; |
| } |
| return 0; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res) |
| { |
| __be32 *p; |
| uint32_t delegation_type; |
| int status; |
| |
| p = xdr_inline_decode(xdr, 4); |
| if (unlikely(!p)) |
| goto out_overflow; |
| delegation_type = be32_to_cpup(p); |
| if (delegation_type == NFS4_OPEN_DELEGATE_NONE) { |
| res->delegation_type = 0; |
| return 0; |
| } |
| status = decode_stateid(xdr, &res->delegation); |
| if (unlikely(status)) |
| return status; |
| p = xdr_inline_decode(xdr, 4); |
| if (unlikely(!p)) |
| goto out_overflow; |
| res->do_recall = be32_to_cpup(p); |
| |
| switch (delegation_type) { |
| case NFS4_OPEN_DELEGATE_READ: |
| res->delegation_type = FMODE_READ; |
| break; |
| case NFS4_OPEN_DELEGATE_WRITE: |
| res->delegation_type = FMODE_WRITE|FMODE_READ; |
| if (decode_space_limit(xdr, &res->maxsize) < 0) |
| return -EIO; |
| } |
| return decode_ace(xdr, NULL, res->server->nfs_client); |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res) |
| { |
| __be32 *p; |
| uint32_t savewords, bmlen, i; |
| int status; |
| |
| status = decode_op_hdr(xdr, OP_OPEN); |
| if (status != -EIO) |
| nfs_increment_open_seqid(status, res->seqid); |
| if (!status) |
| status = decode_stateid(xdr, &res->stateid); |
| if (unlikely(status)) |
| return status; |
| |
| decode_change_info(xdr, &res->cinfo); |
| |
| p = xdr_inline_decode(xdr, 8); |
| if (unlikely(!p)) |
| goto out_overflow; |
| res->rflags = be32_to_cpup(p++); |
| bmlen = be32_to_cpup(p); |
| if (bmlen > 10) |
| goto xdr_error; |
| |
| p = xdr_inline_decode(xdr, bmlen << 2); |
| if (unlikely(!p)) |
| goto out_overflow; |
| savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE); |
| for (i = 0; i < savewords; ++i) |
| res->attrset[i] = be32_to_cpup(p++); |
| for (; i < NFS4_BITMAP_SIZE; i++) |
| res->attrset[i] = 0; |
| |
| return decode_delegation(xdr, res); |
| xdr_error: |
| dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen); |
| return -EIO; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res) |
| { |
| int status; |
| |
| status = decode_op_hdr(xdr, OP_OPEN_CONFIRM); |
| if (status != -EIO) |
| nfs_increment_open_seqid(status, res->seqid); |
| if (!status) |
| status = decode_stateid(xdr, &res->stateid); |
| return status; |
| } |
| |
| static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res) |
| { |
| int status; |
| |
| status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE); |
| if (status != -EIO) |
| nfs_increment_open_seqid(status, res->seqid); |
| if (!status) |
| status = decode_stateid(xdr, &res->stateid); |
| return status; |
| } |
| |
| static int decode_putfh(struct xdr_stream *xdr) |
| { |
| return decode_op_hdr(xdr, OP_PUTFH); |
| } |
| |
| static int decode_putrootfh(struct xdr_stream *xdr) |
| { |
| return decode_op_hdr(xdr, OP_PUTROOTFH); |
| } |
| |
| static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res) |
| { |
| struct kvec *iov = req->rq_rcv_buf.head; |
| __be32 *p; |
| uint32_t count, eof, recvd, hdrlen; |
| int status; |
| |
| status = decode_op_hdr(xdr, OP_READ); |
| if (status) |
| return status; |
| p = xdr_inline_decode(xdr, 8); |
| if (unlikely(!p)) |
| goto out_overflow; |
| eof = be32_to_cpup(p++); |
| count = be32_to_cpup(p); |
| hdrlen = (u8 *) xdr->p - (u8 *) iov->iov_base; |
| recvd = req->rq_rcv_buf.len - hdrlen; |
| if (count > recvd) { |
| dprintk("NFS: server cheating in read reply: " |
| "count %u > recvd %u\n", count, recvd); |
| count = recvd; |
| eof = 0; |
| } |
| xdr_read_pages(xdr, count); |
| res->eof = eof; |
| res->count = count; |
| return 0; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir) |
| { |
| struct xdr_buf *rcvbuf = &req->rq_rcv_buf; |
| struct kvec *iov = rcvbuf->head; |
| size_t hdrlen; |
| u32 recvd, pglen = rcvbuf->page_len; |
| int status; |
| |
| status = decode_op_hdr(xdr, OP_READDIR); |
| if (!status) |
| status = decode_verifier(xdr, readdir->verifier.data); |
| if (unlikely(status)) |
| return status; |
| dprintk("%s: verifier = %08x:%08x\n", |
| __func__, |
| ((u32 *)readdir->verifier.data)[0], |
| ((u32 *)readdir->verifier.data)[1]); |
| |
| |
| hdrlen = (char *) xdr->p - (char *) iov->iov_base; |
| recvd = rcvbuf->len - hdrlen; |
| if (pglen > recvd) |
| pglen = recvd; |
| xdr_read_pages(xdr, pglen); |
| |
| |
| return pglen; |
| } |
| |
| static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req) |
| { |
| struct xdr_buf *rcvbuf = &req->rq_rcv_buf; |
| struct kvec *iov = rcvbuf->head; |
| size_t hdrlen; |
| u32 len, recvd; |
| __be32 *p; |
| int status; |
| |
| status = decode_op_hdr(xdr, OP_READLINK); |
| if (status) |
| return status; |
| |
| /* Convert length of symlink */ |
| p = xdr_inline_decode(xdr, 4); |
| if (unlikely(!p)) |
| goto out_overflow; |
| len = be32_to_cpup(p); |
| if (len >= rcvbuf->page_len || len <= 0) { |
| dprintk("nfs: server returned giant symlink!\n"); |
| return -ENAMETOOLONG; |
| } |
| hdrlen = (char *) xdr->p - (char *) iov->iov_base; |
| recvd = req->rq_rcv_buf.len - hdrlen; |
| if (recvd < len) { |
| dprintk("NFS: server cheating in readlink reply: " |
| "count %u > recvd %u\n", len, recvd); |
| return -EIO; |
| } |
| xdr_read_pages(xdr, len); |
| /* |
| * The XDR encode routine has set things up so that |
| * the link text will be copied directly into the |
| * buffer. We just have to do overflow-checking, |
| * and and null-terminate the text (the VFS expects |
| * null-termination). |
| */ |
| xdr_terminate_string(rcvbuf, len); |
| return 0; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) |
| { |
| int status; |
| |
| status = decode_op_hdr(xdr, OP_REMOVE); |
| if (status) |
| goto out; |
| status = decode_change_info(xdr, cinfo); |
| out: |
| return status; |
| } |
| |
| static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo, |
| struct nfs4_change_info *new_cinfo) |
| { |
| int status; |
| |
| status = decode_op_hdr(xdr, OP_RENAME); |
| if (status) |
| goto out; |
| if ((status = decode_change_info(xdr, old_cinfo))) |
| goto out; |
| status = decode_change_info(xdr, new_cinfo); |
| out: |
| return status; |
| } |
| |
| static int decode_renew(struct xdr_stream *xdr) |
| { |
| return decode_op_hdr(xdr, OP_RENEW); |
| } |
| |
| static int |
| decode_restorefh(struct xdr_stream *xdr) |
| { |
| return decode_op_hdr(xdr, OP_RESTOREFH); |
| } |
| |
| static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req, |
| size_t *acl_len) |
| { |
| __be32 *savep; |
| uint32_t attrlen, |
| bitmap[2] = {0}; |
| struct kvec *iov = req->rq_rcv_buf.head; |
| int status; |
| |
| *acl_len = 0; |
| if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) |
| goto out; |
| if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) |
| goto out; |
| if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) |
| goto out; |
| |
| if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U))) |
| return -EIO; |
| if (likely(bitmap[0] & FATTR4_WORD0_ACL)) { |
| size_t hdrlen; |
| u32 recvd; |
| |
| /* We ignore &savep and don't do consistency checks on |
| * the attr length. Let userspace figure it out.... */ |
| hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base; |
| recvd = req->rq_rcv_buf.len - hdrlen; |
| if (attrlen > recvd) { |
| dprintk("NFS: server cheating in getattr" |
| " acl reply: attrlen %u > recvd %u\n", |
| attrlen, recvd); |
| return -EINVAL; |
| } |
| xdr_read_pages(xdr, attrlen); |
| *acl_len = attrlen; |
| } else |
| status = -EOPNOTSUPP; |
| |
| out: |
| return status; |
| } |
| |
| static int |
| decode_savefh(struct xdr_stream *xdr) |
| { |
| return decode_op_hdr(xdr, OP_SAVEFH); |
| } |
| |
| static int decode_setattr(struct xdr_stream *xdr) |
| { |
| __be32 *p; |
| uint32_t bmlen; |
| int status; |
| |
| status = decode_op_hdr(xdr, OP_SETATTR); |
| if (status) |
| return status; |
| p = xdr_inline_decode(xdr, 4); |
| if (unlikely(!p)) |
| goto out_overflow; |
| bmlen = be32_to_cpup(p); |
| p = xdr_inline_decode(xdr, bmlen << 2); |
| if (likely(p)) |
| return 0; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res) |
| { |
| __be32 *p; |
| uint32_t opnum; |
| int32_t nfserr; |
| |
| p = xdr_inline_decode(xdr, 8); |
| if (unlikely(!p)) |
| goto out_overflow; |
| opnum = be32_to_cpup(p++); |
| if (opnum != OP_SETCLIENTID) { |
| dprintk("nfs: decode_setclientid: Server returned operation" |
| " %d\n", opnum); |
| return -EIO; |
| } |
| nfserr = be32_to_cpup(p); |
| if (nfserr == NFS_OK) { |
| p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE); |
| if (unlikely(!p)) |
| goto out_overflow; |
| p = xdr_decode_hyper(p, &res->clientid); |
| memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE); |
| } else if (nfserr == NFSERR_CLID_INUSE) { |
| uint32_t len; |
| |
| /* skip netid string */ |
| p = xdr_inline_decode(xdr, 4); |
| if (unlikely(!p)) |
| goto out_overflow; |
| len = be32_to_cpup(p); |
| p = xdr_inline_decode(xdr, len); |
| if (unlikely(!p)) |
| goto out_overflow; |
| |
| /* skip uaddr string */ |
| p = xdr_inline_decode(xdr, 4); |
| if (unlikely(!p)) |
| goto out_overflow; |
| len = be32_to_cpup(p); |
| p = xdr_inline_decode(xdr, len); |
| if (unlikely(!p)) |
| goto out_overflow; |
| return -NFSERR_CLID_INUSE; |
| } else |
| return nfs4_stat_to_errno(nfserr); |
| |
| return 0; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_setclientid_confirm(struct xdr_stream *xdr) |
| { |
| return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM); |
| } |
| |
| static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res) |
| { |
| __be32 *p; |
| int status; |
| |
| status = decode_op_hdr(xdr, OP_WRITE); |
| if (status) |
| return status; |
| |
| p = xdr_inline_decode(xdr, 16); |
| if (unlikely(!p)) |
| goto out_overflow; |
| res->count = be32_to_cpup(p++); |
| res->verf->committed = be32_to_cpup(p++); |
| memcpy(res->verf->verifier, p, 8); |
| return 0; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_delegreturn(struct xdr_stream *xdr) |
| { |
| return decode_op_hdr(xdr, OP_DELEGRETURN); |
| } |
| |
| #if defined(CONFIG_NFS_V4_1) |
| static int decode_exchange_id(struct xdr_stream *xdr, |
| struct nfs41_exchange_id_res *res) |
| { |
| __be32 *p; |
| uint32_t dummy; |
| char *dummy_str; |
| int status; |
| struct nfs_client *clp = res->client; |
| |
| status = decode_op_hdr(xdr, OP_EXCHANGE_ID); |
| if (status) |
| return status; |
| |
| p = xdr_inline_decode(xdr, 8); |
| if (unlikely(!p)) |
| goto out_overflow; |
| xdr_decode_hyper(p, &clp->cl_ex_clid); |
| p = xdr_inline_decode(xdr, 12); |
| if (unlikely(!p)) |
| goto out_overflow; |
| clp->cl_seqid = be32_to_cpup(p++); |
| clp->cl_exchange_flags = be32_to_cpup(p++); |
| |
| /* We ask for SP4_NONE */ |
| dummy = be32_to_cpup(p); |
| if (dummy != SP4_NONE) |
| return -EIO; |
| |
| /* Throw away minor_id */ |
| p = xdr_inline_decode(xdr, 8); |
| if (unlikely(!p)) |
| goto out_overflow; |
| |
| /* Throw away Major id */ |
| status = decode_opaque_inline(xdr, &dummy, &dummy_str); |
| if (unlikely(status)) |
| return status; |
| |
| /* Throw away server_scope */ |
| status = decode_opaque_inline(xdr, &dummy, &dummy_str); |
| if (unlikely(status)) |
| return status; |
| |
| /* Throw away Implementation id array */ |
| status = decode_opaque_inline(xdr, &dummy, &dummy_str); |
| if (unlikely(status)) |
| return status; |
| |
| return 0; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_chan_attrs(struct xdr_stream *xdr, |
| struct nfs4_channel_attrs *attrs) |
| { |
| __be32 *p; |
| u32 nr_attrs; |
| |
| p = xdr_inline_decode(xdr, 28); |
| if (unlikely(!p)) |
| goto out_overflow; |
| attrs->headerpadsz = be32_to_cpup(p++); |
| attrs->max_rqst_sz = be32_to_cpup(p++); |
| attrs->max_resp_sz = be32_to_cpup(p++); |
| attrs->max_resp_sz_cached = be32_to_cpup(p++); |
| attrs->max_ops = be32_to_cpup(p++); |
| attrs->max_reqs = be32_to_cpup(p++); |
| nr_attrs = be32_to_cpup(p); |
| if (unlikely(nr_attrs > 1)) { |
| printk(KERN_WARNING "%s: Invalid rdma channel attrs count %u\n", |
| __func__, nr_attrs); |
| return -EINVAL; |
| } |
| if (nr_attrs == 1) { |
| p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */ |
| if (unlikely(!p)) |
| goto out_overflow; |
| } |
| return 0; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid) |
| { |
| return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN); |
| } |
| |
| static int decode_create_session(struct xdr_stream *xdr, |
| struct nfs41_create_session_res *res) |
| { |
| __be32 *p; |
| int status; |
| struct nfs_client *clp = res->client; |
| struct nfs4_session *session = clp->cl_session; |
| |
| status = decode_op_hdr(xdr, OP_CREATE_SESSION); |
| if (!status) |
| status = decode_sessionid(xdr, &session->sess_id); |
| if (unlikely(status)) |
| return status; |
| |
| /* seqid, flags */ |
| p = xdr_inline_decode(xdr, 8); |
| if (unlikely(!p)) |
| goto out_overflow; |
| clp->cl_seqid = be32_to_cpup(p++); |
| session->flags = be32_to_cpup(p); |
| |
| /* Channel attributes */ |
| status = decode_chan_attrs(xdr, &session->fc_attrs); |
| if (!status) |
| status = decode_chan_attrs(xdr, &session->bc_attrs); |
| return status; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_destroy_session(struct xdr_stream *xdr, void *dummy) |
| { |
| return decode_op_hdr(xdr, OP_DESTROY_SESSION); |
| } |
| |
| static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy) |
| { |
| return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE); |
| } |
| #endif /* CONFIG_NFS_V4_1 */ |
| |
| static int decode_sequence(struct xdr_stream *xdr, |
| struct nfs4_sequence_res *res, |
| struct rpc_rqst *rqstp) |
| { |
| #if defined(CONFIG_NFS_V4_1) |
| struct nfs4_sessionid id; |
| u32 dummy; |
| int status; |
| __be32 *p; |
| |
| if (!res->sr_session) |
| return 0; |
| |
| status = decode_op_hdr(xdr, OP_SEQUENCE); |
| if (!status) |
| status = decode_sessionid(xdr, &id); |
| if (unlikely(status)) |
| goto out_err; |
| |
| /* |
| * If the server returns different values for sessionID, slotID or |
| * sequence number, the server is looney tunes. |
| */ |
| status = -EREMOTEIO; |
| |
| if (memcmp(id.data, res->sr_session->sess_id.data, |
| NFS4_MAX_SESSIONID_LEN)) { |
| dprintk("%s Invalid session id\n", __func__); |
| goto out_err; |
| } |
| |
| p = xdr_inline_decode(xdr, 20); |
| if (unlikely(!p)) |
| goto out_overflow; |
| |
| /* seqid */ |
| dummy = be32_to_cpup(p++); |
| if (dummy != res->sr_slot->seq_nr) { |
| dprintk("%s Invalid sequence number\n", __func__); |
| goto out_err; |
| } |
| /* slot id */ |
| dummy = be32_to_cpup(p++); |
| if (dummy != res->sr_slot - res->sr_session->fc_slot_table.slots) { |
| dprintk("%s Invalid slot id\n", __func__); |
| goto out_err; |
| } |
| /* highest slot id - currently not processed */ |
| dummy = be32_to_cpup(p++); |
| /* target highest slot id - currently not processed */ |
| dummy = be32_to_cpup(p++); |
| /* result flags */ |
| res->sr_status_flags = be32_to_cpup(p); |
| status = 0; |
| out_err: |
| res->sr_status = status; |
| return status; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| status = -EIO; |
| goto out_err; |
| #else /* CONFIG_NFS_V4_1 */ |
| return 0; |
| #endif /* CONFIG_NFS_V4_1 */ |
| } |
| |
| #if defined(CONFIG_NFS_V4_1) |
| |
| static int decode_getdeviceinfo(struct xdr_stream *xdr, |
| struct pnfs_device *pdev) |
| { |
| __be32 *p; |
| uint32_t len, type; |
| int status; |
| |
| status = decode_op_hdr(xdr, OP_GETDEVICEINFO); |
| if (status) { |
| if (status == -ETOOSMALL) { |
| p = xdr_inline_decode(xdr, 4); |
| if (unlikely(!p)) |
| goto out_overflow; |
| pdev->mincount = be32_to_cpup(p); |
| dprintk("%s: Min count too small. mincnt = %u\n", |
| __func__, pdev->mincount); |
| } |
| return status; |
| } |
| |
| p = xdr_inline_decode(xdr, 8); |
| if (unlikely(!p)) |
| goto out_overflow; |
| type = be32_to_cpup(p++); |
| if (type != pdev->layout_type) { |
| dprintk("%s: layout mismatch req: %u pdev: %u\n", |
| __func__, pdev->layout_type, type); |
| return -EINVAL; |
| } |
| /* |
| * Get the length of the opaque device_addr4. xdr_read_pages places |
| * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages) |
| * and places the remaining xdr data in xdr_buf->tail |
| */ |
| pdev->mincount = be32_to_cpup(p); |
| xdr_read_pages(xdr, pdev->mincount); /* include space for the length */ |
| |
| /* Parse notification bitmap, verifying that it is zero. */ |
| p = xdr_inline_decode(xdr, 4); |
| if (unlikely(!p)) |
| goto out_overflow; |
| len = be32_to_cpup(p); |
| if (len) { |
| uint32_t i; |
| |
| p = xdr_inline_decode(xdr, 4 * len); |
| if (unlikely(!p)) |
| goto out_overflow; |
| for (i = 0; i < len; i++, p++) { |
| if (be32_to_cpup(p)) { |
| dprintk("%s: notifications not supported\n", |
| __func__); |
| return -EIO; |
| } |
| } |
| } |
| return 0; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| |
| static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req, |
| struct nfs4_layoutget_res *res) |
| { |
| __be32 *p; |
| int status; |
| u32 layout_count; |
| |
| status = decode_op_hdr(xdr, OP_LAYOUTGET); |
| if (status) |
| return status; |
| p = xdr_inline_decode(xdr, 8 + NFS4_STATEID_SIZE); |
| if (unlikely(!p)) |
| goto out_overflow; |
| res->return_on_close = be32_to_cpup(p++); |
| p = xdr_decode_opaque_fixed(p, res->stateid.data, NFS4_STATEID_SIZE); |
| layout_count = be32_to_cpup(p); |
| if (!layout_count) { |
| dprintk("%s: server responded with empty layout array\n", |
| __func__); |
| return -EINVAL; |
| } |
| |
| p = xdr_inline_decode(xdr, 24); |
| if (unlikely(!p)) |
| goto out_overflow; |
| p = xdr_decode_hyper(p, &res->range.offset); |
| p = xdr_decode_hyper(p, &res->range.length); |
| res->range.iomode = be32_to_cpup(p++); |
| res->type = be32_to_cpup(p++); |
| |
| status = decode_opaque_inline(xdr, &res->layout.len, (char **)&p); |
| if (unlikely(status)) |
| return status; |
| |
| dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n", |
| __func__, |
| (unsigned long)res->range.offset, |
| (unsigned long)res->range.length, |
| res->range.iomode, |
| res->type, |
| res->layout.len); |
| |
| /* nfs4_proc_layoutget allocated a single page */ |
| if (res->layout.len > PAGE_SIZE) |
| return -ENOMEM; |
| memcpy(res->layout.buf, p, res->layout.len); |
| |
| if (layout_count > 1) { |
| /* We only handle a length one array at the moment. Any |
| * further entries are just ignored. Note that this means |
| * the client may see a response that is less than the |
| * minimum it requested. |
| */ |
| dprintk("%s: server responded with %d layouts, dropping tail\n", |
| __func__, layout_count); |
| } |
| |
| return 0; |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EIO; |
| } |
| #endif /* CONFIG_NFS_V4_1 */ |
| |
| /* |
| * END OF "GENERIC" DECODE ROUTINES. |
| */ |
| |
| /* |
| * Decode OPEN_DOWNGRADE response |
| */ |
| static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (status) |
| goto out; |
| status = decode_sequence(&xdr, &res->seq_res, rqstp); |
| if (status) |
| goto out; |
| status = decode_putfh(&xdr); |
| if (status) |
| goto out; |
| status = decode_open_downgrade(&xdr, res); |
| if (status != 0) |
| goto out; |
| decode_getfattr(&xdr, res->fattr, res->server, |
| !RPC_IS_ASYNC(rqstp->rq_task)); |
| out: |
| return status; |
| } |
| |
| /* |
| * Decode ACCESS response |
| */ |
| static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_accessres *res) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (status) |
| goto out; |
| status = decode_sequence(&xdr, &res->seq_res, rqstp); |
| if (status) |
| goto out; |
| status = decode_putfh(&xdr); |
| if (status != 0) |
| goto out; |
| status = decode_access(&xdr, res); |
| if (status != 0) |
| goto out; |
| decode_getfattr(&xdr, res->fattr, res->server, |
| !RPC_IS_ASYNC(rqstp->rq_task)); |
| out: |
| return status; |
| } |
| |
| /* |
| * Decode LOOKUP response |
| */ |
| static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (status) |
| goto out; |
| status = decode_sequence(&xdr, &res->seq_res, rqstp); |
| if (status) |
| goto out; |
| if ((status = decode_putfh(&xdr)) != 0) |
| goto out; |
| if ((status = decode_lookup(&xdr)) != 0) |
| goto out; |
| if ((status = decode_getfh(&xdr, res->fh)) != 0) |
| goto out; |
| status = decode_getfattr(&xdr, res->fattr, res->server |
| ,!RPC_IS_ASYNC(rqstp->rq_task)); |
| out: |
| return status; |
| } |
| |
| /* |
| * Decode LOOKUP_ROOT response |
| */ |
| static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (status) |
| goto out; |
| status = decode_sequence(&xdr, &res->seq_res, rqstp); |
| if (status) |
| goto out; |
| if ((status = decode_putrootfh(&xdr)) != 0) |
| goto out; |
| if ((status = decode_getfh(&xdr, res->fh)) == 0) |
| status = decode_getfattr(&xdr, res->fattr, res->server, |
| !RPC_IS_ASYNC(rqstp->rq_task)); |
| out: |
| return status; |
| } |
| |
| /* |
| * Decode REMOVE response |
| */ |
| static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, __be32 *p, struct nfs_removeres *res) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (status) |
| goto out; |
| status = decode_sequence(&xdr, &res->seq_res, rqstp); |
| if (status) |
| goto out; |
| if ((status = decode_putfh(&xdr)) != 0) |
| goto out; |
| if ((status = decode_remove(&xdr, &res->cinfo)) != 0) |
| goto out; |
| decode_getfattr(&xdr, res->dir_attr, res->server, |
| !RPC_IS_ASYNC(rqstp->rq_task)); |
| out: |
| return status; |
| } |
| |
| /* |
| * Decode RENAME response |
| */ |
| static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, __be32 *p, struct nfs_renameres *res) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (status) |
| goto out; |
| status = decode_sequence(&xdr, &res->seq_res, rqstp); |
| if (status) |
| goto out; |
| if ((status = decode_putfh(&xdr)) != 0) |
| goto out; |
| if ((status = decode_savefh(&xdr)) != 0) |
| goto out; |
| if ((status = decode_putfh(&xdr)) != 0) |
| goto out; |
| if ((status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo)) != 0) |
| goto out; |
| /* Current FH is target directory */ |
| if (decode_getfattr(&xdr, res->new_fattr, res->server, |
| !RPC_IS_ASYNC(rqstp->rq_task)) != 0) |
| goto out; |
| if ((status = decode_restorefh(&xdr)) != 0) |
| goto out; |
| decode_getfattr(&xdr, res->old_fattr, res->server, |
| !RPC_IS_ASYNC(rqstp->rq_task)); |
| out: |
| return status; |
| } |
| |
| /* |
| * Decode LINK response |
| */ |
| static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_link_res *res) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (status) |
| goto out; |
| status = decode_sequence(&xdr, &res->seq_res, rqstp); |
| if (status) |
| goto out; |
| if ((status = decode_putfh(&xdr)) != 0) |
| goto out; |
| if ((status = decode_savefh(&xdr)) != 0) |
| goto out; |
| if ((status = decode_putfh(&xdr)) != 0) |
| goto out; |
| if ((status = decode_link(&xdr, &res->cinfo)) != 0) |
| goto out; |
| /* |
| * Note order: OP_LINK leaves the directory as the current |
| * filehandle. |
| */ |
| if (decode_getfattr(&xdr, res->dir_attr, res->server, |
| !RPC_IS_ASYNC(rqstp->rq_task)) != 0) |
| goto out; |
| if ((status = decode_restorefh(&xdr)) != 0) |
| goto out; |
| decode_getfattr(&xdr, res->fattr, res->server, |
| !RPC_IS_ASYNC(rqstp->rq_task)); |
| out: |
| return status; |
| } |
| |
| /* |
| * Decode CREATE response |
| */ |
| static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (status) |
| goto out; |
| status = decode_sequence(&xdr, &res->seq_res, rqstp); |
| if (status) |
| goto out; |
| if ((status = decode_putfh(&xdr)) != 0) |
| goto out; |
| if ((status = decode_savefh(&xdr)) != 0) |
| goto out; |
| if ((status = decode_create(&xdr,&res->dir_cinfo)) != 0) |
| goto out; |
| if ((status = decode_getfh(&xdr, res->fh)) != 0) |
| goto out; |
| if (decode_getfattr(&xdr, res->fattr, res->server, |
| !RPC_IS_ASYNC(rqstp->rq_task)) != 0) |
| goto out; |
| if ((status = decode_restorefh(&xdr)) != 0) |
| goto out; |
| decode_getfattr(&xdr, res->dir_fattr, res->server, |
| !RPC_IS_ASYNC(rqstp->rq_task)); |
| out: |
| return status; |
| } |
| |
| /* |
| * Decode SYMLINK response |
| */ |
| static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res) |
| { |
| return nfs4_xdr_dec_create(rqstp, p, res); |
| } |
| |
| /* |
| * Decode GETATTR response |
| */ |
| static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_getattr_res *res) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (status) |
| goto out; |
| status = decode_sequence(&xdr, &res->seq_res, rqstp); |
| if (status) |
| goto out; |
| status = decode_putfh(&xdr); |
| if (status) |
| goto out; |
| status = decode_getfattr(&xdr, res->fattr, res->server, |
| !RPC_IS_ASYNC(rqstp->rq_task)); |
| out: |
| return status; |
| } |
| |
| /* |
| * Encode an SETACL request |
| */ |
| static int |
| nfs4_xdr_enc_setacl(struct rpc_rqst *req, __be32 *p, struct nfs_setaclargs *args) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr = { |
| .minorversion = nfs4_xdr_minorversion(&args->seq_args), |
| }; |
| int status; |
| |
| xdr_init_encode(&xdr, &req->rq_snd_buf, p); |
| encode_compound_hdr(&xdr, req, &hdr); |
| encode_sequence(&xdr, &args->seq_args, &hdr); |
| encode_putfh(&xdr, args->fh, &hdr); |
| status = encode_setacl(&xdr, args, &hdr); |
| encode_nops(&hdr); |
| return status; |
| } |
| |
| /* |
| * Decode SETACL response |
| */ |
| static int |
| nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, __be32 *p, |
| struct nfs_setaclres *res) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (status) |
| goto out; |
| status = decode_sequence(&xdr, &res->seq_res, rqstp); |
| if (status) |
| goto out; |
| status = decode_putfh(&xdr); |
| if (status) |
| goto out; |
| status = decode_setattr(&xdr); |
| out: |
| return status; |
| } |
| |
| /* |
| * Decode GETACL response |
| */ |
| static int |
| nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, __be32 *p, |
| struct nfs_getaclres *res) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (status) |
| goto out; |
| status = decode_sequence(&xdr, &res->seq_res, rqstp); |
| if (status) |
| goto out; |
| status = decode_putfh(&xdr); |
| if (status) |
| goto out; |
| status = decode_getacl(&xdr, rqstp, &res->acl_len); |
| |
| out: |
| return status; |
| } |
| |
| /* |
| * Decode CLOSE response |
| */ |
| static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (status) |
| goto out; |
| status = decode_sequence(&xdr, &res->seq_res, rqstp); |
| if (status) |
| goto out; |
| status = decode_putfh(&xdr); |
| if (status) |
| goto out; |
| status = decode_close(&xdr, res); |
| if (status != 0) |
| goto out; |
| /* |
| * Note: Server may do delete on close for this file |
| * in which case the getattr call will fail with |
| * an ESTALE error. Shouldn't be a problem, |
| * though, since fattr->valid will remain unset. |
| */ |
| decode_getfattr(&xdr, res->fattr, res->server, |
| !RPC_IS_ASYNC(rqstp->rq_task)); |
| out: |
| return status; |
| } |
| |
| /* |
| * Decode OPEN response |
| */ |
| static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (status) |
| goto out; |
| status = decode_sequence(&xdr, &res->seq_res, rqstp); |
| if (status) |
| goto out; |
| status = decode_putfh(&xdr); |
| if (status) |
| goto out; |
| status = decode_savefh(&xdr); |
| if (status) |
| goto out; |
| status = decode_open(&xdr, res); |
| if (status) |
| goto out; |
| if (decode_getfh(&xdr, &res->fh) != 0) |
| goto out; |
| if (decode_getfattr(&xdr, res->f_attr, res->server, |
| !RPC_IS_ASYNC(rqstp->rq_task)) != 0) |
| goto out; |
| if (decode_restorefh(&xdr) != 0) |
| goto out; |
| decode_getfattr(&xdr, res->dir_attr, res->server, |
| !RPC_IS_ASYNC(rqstp->rq_task)); |
| out: |
| return status; |
| } |
| |
| /* |
| * Decode OPEN_CONFIRM response |
| */ |
| static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, __be32 *p, struct nfs_open_confirmres *res) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (status) |
| goto out; |
| status = decode_putfh(&xdr); |
| if (status) |
| goto out; |
| status = decode_open_confirm(&xdr, res); |
| out: |
| return status; |
| } |
| |
| /* |
| * Decode OPEN response |
| */ |
| static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (status) |
| goto out; |
| status = decode_sequence(&xdr, &res->seq_res, rqstp); |
| if (status) |
| goto out; |
| status = decode_putfh(&xdr); |
| if (status) |
| goto out; |
| status = decode_open(&xdr, res); |
| if (status) |
| goto out; |
| decode_getfattr(&xdr, res->f_attr, res->server, |
| !RPC_IS_ASYNC(rqstp->rq_task)); |
| out: |
| return status; |
| } |
| |
| /* |
| * Decode SETATTR response |
| */ |
| static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_setattrres *res) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (status) |
| goto out; |
| status = decode_sequence(&xdr, &res->seq_res, rqstp); |
| if (status) |
| goto out; |
| status = decode_putfh(&xdr); |
| if (status) |
| goto out; |
| status = decode_setattr(&xdr); |
| if (status) |
| goto out; |
| decode_getfattr(&xdr, res->fattr, res->server, |
| !RPC_IS_ASYNC(rqstp->rq_task)); |
| out: |
| return status; |
| } |
| |
| /* |
| * Decode LOCK response |
| */ |
| static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lock_res *res) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (status) |
| goto out; |
| status = decode_sequence(&xdr, &res->seq_res, rqstp); |
| if (status) |
| goto out; |
| status = decode_putfh(&xdr); |
| if (status) |
| goto out; |
| status = decode_lock(&xdr, res); |
| out: |
| return status; |
| } |
| |
| /* |
| * Decode LOCKT response |
| */ |
| static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lockt_res *res) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (status) |
| goto out; |
| status = decode_sequence(&xdr, &res->seq_res, rqstp); |
| if (status) |
| goto out; |
| status = decode_putfh(&xdr); |
| if (status) |
| goto out; |
| status = decode_lockt(&xdr, res); |
| out: |
| return status; |
| } |
| |
| /* |
| * Decode LOCKU response |
| */ |
| static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, __be32 *p, struct nfs_locku_res *res) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (status) |
| goto out; |
| status = decode_sequence(&xdr, &res->seq_res, rqstp); |
| if (status) |
| goto out; |
| status = decode_putfh(&xdr); |
| if (status) |
| goto out; |
| status = decode_locku(&xdr, res); |
| out: |
| return status; |
| } |
| |
| static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp, __be32 *p, void *dummy) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (!status) |
| status = decode_release_lockowner(&xdr); |
| return status; |
| } |
| |
| /* |
| * Decode READLINK response |
| */ |
| static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, __be32 *p, |
| struct nfs4_readlink_res *res) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (status) |
| goto out; |
| status = decode_sequence(&xdr, &res->seq_res, rqstp); |
| if (status) |
| goto out; |
| status = decode_putfh(&xdr); |
| if (status) |
| goto out; |
| status = decode_readlink(&xdr, rqstp); |
| out: |
| return status; |
| } |
| |
| /* |
| * Decode READDIR response |
| */ |
| static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_readdir_res *res) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (status) |
| goto out; |
| status = decode_sequence(&xdr, &res->seq_res, rqstp); |
| if (status) |
| goto out; |
| status = decode_putfh(&xdr); |
| if (status) |
| goto out; |
| status = decode_readdir(&xdr, rqstp, res); |
| out: |
| return status; |
| } |
| |
| /* |
| * Decode Read response |
| */ |
| static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, __be32 *p, struct nfs_readres *res) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (status) |
| goto out; |
| status = decode_sequence(&xdr, &res->seq_res, rqstp); |
| if (status) |
| goto out; |
| status = decode_putfh(&xdr); |
| if (status) |
| goto out; |
| status = decode_read(&xdr, rqstp, res); |
| if (!status) |
| status = res->count; |
| out: |
| return status; |
| } |
| |
| /* |
| * Decode WRITE response |
| */ |
| static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (status) |
| goto out; |
| status = decode_sequence(&xdr, &res->seq_res, rqstp); |
| if (status) |
| goto out; |
| status = decode_putfh(&xdr); |
| if (status) |
| goto out; |
| status = decode_write(&xdr, res); |
| if (status) |
| goto out; |
| decode_getfattr(&xdr, res->fattr, res->server, |
| !RPC_IS_ASYNC(rqstp->rq_task)); |
| if (!status) |
| status = res->count; |
| out: |
| return status; |
| } |
| |
| /* |
| * Decode COMMIT response |
| */ |
| static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (status) |
| goto out; |
| status = decode_sequence(&xdr, &res->seq_res, rqstp); |
| if (status) |
| goto out; |
| status = decode_putfh(&xdr); |
| if (status) |
| goto out; |
| status = decode_commit(&xdr, res); |
| if (status) |
| goto out; |
| decode_getfattr(&xdr, res->fattr, res->server, |
| !RPC_IS_ASYNC(rqstp->rq_task)); |
| out: |
| return status; |
| } |
| |
| /* |
| * Decode FSINFO response |
| */ |
| static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, __be32 *p, |
| struct nfs4_fsinfo_res *res) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &req->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (!status) |
| status = decode_sequence(&xdr, &res->seq_res, req); |
| if (!status) |
| status = decode_putfh(&xdr); |
| if (!status) |
| status = decode_fsinfo(&xdr, res->fsinfo); |
| return status; |
| } |
| |
| /* |
| * Decode PATHCONF response |
| */ |
| static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, __be32 *p, |
| struct nfs4_pathconf_res *res) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &req->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (!status) |
| status = decode_sequence(&xdr, &res->seq_res, req); |
| if (!status) |
| status = decode_putfh(&xdr); |
| if (!status) |
| status = decode_pathconf(&xdr, res->pathconf); |
| return status; |
| } |
| |
| /* |
| * Decode STATFS response |
| */ |
| static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, __be32 *p, |
| struct nfs4_statfs_res *res) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &req->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (!status) |
| status = decode_sequence(&xdr, &res->seq_res, req); |
| if (!status) |
| status = decode_putfh(&xdr); |
| if (!status) |
| status = decode_statfs(&xdr, res->fsstat); |
| return status; |
| } |
| |
| /* |
| * Decode GETATTR_BITMAP response |
| */ |
| static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, __be32 *p, struct nfs4_server_caps_res *res) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &req->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (status) |
| goto out; |
| status = decode_sequence(&xdr, &res->seq_res, req); |
| if (status) |
| goto out; |
| if ((status = decode_putfh(&xdr)) != 0) |
| goto out; |
| status = decode_server_caps(&xdr, res); |
| out: |
| return status; |
| } |
| |
| /* |
| * Decode RENEW response |
| */ |
| static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, __be32 *p, void *dummy) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (!status) |
| status = decode_renew(&xdr); |
| return status; |
| } |
| |
| /* |
| * Decode SETCLIENTID response |
| */ |
| static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, __be32 *p, |
| struct nfs4_setclientid_res *res) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &req->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (!status) |
| status = decode_setclientid(&xdr, res); |
| return status; |
| } |
| |
| /* |
| * Decode SETCLIENTID_CONFIRM response |
| */ |
| static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *fsinfo) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &req->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (!status) |
| status = decode_setclientid_confirm(&xdr); |
| if (!status) |
| status = decode_putrootfh(&xdr); |
| if (!status) |
| status = decode_fsinfo(&xdr, fsinfo); |
| return status; |
| } |
| |
| /* |
| * Decode DELEGRETURN response |
| */ |
| static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_delegreturnres *res) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (status) |
| goto out; |
| status = decode_sequence(&xdr, &res->seq_res, rqstp); |
| if (status) |
| goto out; |
| status = decode_putfh(&xdr); |
| if (status != 0) |
| goto out; |
| status = decode_delegreturn(&xdr); |
| if (status != 0) |
| goto out; |
| decode_getfattr(&xdr, res->fattr, res->server, |
| !RPC_IS_ASYNC(rqstp->rq_task)); |
| out: |
| return status; |
| } |
| |
| /* |
| * Decode FS_LOCATIONS response |
| */ |
| static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, __be32 *p, |
| struct nfs4_fs_locations_res *res) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &req->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (status) |
| goto out; |
| status = decode_sequence(&xdr, &res->seq_res, req); |
| if (status) |
| goto out; |
| if ((status = decode_putfh(&xdr)) != 0) |
| goto out; |
| if ((status = decode_lookup(&xdr)) != 0) |
| goto out; |
| xdr_enter_page(&xdr, PAGE_SIZE); |
| status = decode_getfattr(&xdr, &res->fs_locations->fattr, |
| res->fs_locations->server, |
| !RPC_IS_ASYNC(req->rq_task)); |
| out: |
| return status; |
| } |
| |
| #if defined(CONFIG_NFS_V4_1) |
| /* |
| * Decode EXCHANGE_ID response |
| */ |
| static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp, uint32_t *p, |
| void *res) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (!status) |
| status = decode_exchange_id(&xdr, res); |
| return status; |
| } |
| |
| /* |
| * Decode CREATE_SESSION response |
| */ |
| static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp, uint32_t *p, |
| struct nfs41_create_session_res *res) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (!status) |
| status = decode_create_session(&xdr, res); |
| return status; |
| } |
| |
| /* |
| * Decode DESTROY_SESSION response |
| */ |
| static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp, uint32_t *p, |
| void *dummy) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (!status) |
| status = decode_destroy_session(&xdr, dummy); |
| return status; |
| } |
| |
| /* |
| * Decode SEQUENCE response |
| */ |
| static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp, uint32_t *p, |
| struct nfs4_sequence_res *res) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (!status) |
| status = decode_sequence(&xdr, res, rqstp); |
| return status; |
| } |
| |
| /* |
| * Decode GET_LEASE_TIME response |
| */ |
| static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp, uint32_t *p, |
| struct nfs4_get_lease_time_res *res) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (!status) |
| status = decode_sequence(&xdr, &res->lr_seq_res, rqstp); |
| if (!status) |
| status = decode_putrootfh(&xdr); |
| if (!status) |
| status = decode_fsinfo(&xdr, res->lr_fsinfo); |
| return status; |
| } |
| |
| /* |
| * Decode RECLAIM_COMPLETE response |
| */ |
| static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp, uint32_t *p, |
| struct nfs41_reclaim_complete_res *res) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (!status) |
| status = decode_sequence(&xdr, &res->seq_res, rqstp); |
| if (!status) |
| status = decode_reclaim_complete(&xdr, (void *)NULL); |
| return status; |
| } |
| |
| /* |
| * Decode GETDEVINFO response |
| */ |
| static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp, uint32_t *p, |
| struct nfs4_getdeviceinfo_res *res) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (status != 0) |
| goto out; |
| status = decode_sequence(&xdr, &res->seq_res, rqstp); |
| if (status != 0) |
| goto out; |
| status = decode_getdeviceinfo(&xdr, res->pdev); |
| out: |
| return status; |
| } |
| |
| /* |
| * Decode LAYOUTGET response |
| */ |
| static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp, uint32_t *p, |
| struct nfs4_layoutget_res *res) |
| { |
| struct xdr_stream xdr; |
| struct compound_hdr hdr; |
| int status; |
| |
| xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); |
| status = decode_compound_hdr(&xdr, &hdr); |
| if (status) |
| goto out; |
| status = decode_sequence(&xdr, &res->seq_res, rqstp); |
| if (status) |
| goto out; |
| status = decode_putfh(&xdr); |
| if (status) |
| goto out; |
| status = decode_layoutget(&xdr, rqstp, res); |
| out: |
| return status; |
| } |
| #endif /* CONFIG_NFS_V4_1 */ |
| |
| /** |
| * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in |
| * the local page cache. |
| * @xdr: XDR stream where entry resides |
| * @entry: buffer to fill in with entry data |
| * @plus: boolean indicating whether this should be a readdirplus entry |
| * |
| * Returns zero if successful, otherwise a negative errno value is |
| * returned. |
| * |
| * This function is not invoked during READDIR reply decoding, but |
| * rather whenever an application invokes the getdents(2) system call |
| * on a directory already in our cache. |
| */ |
| int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, |
| int plus) |
| { |
| uint32_t bitmap[2] = {0}; |
| uint32_t len; |
| __be32 *p = xdr_inline_decode(xdr, 4); |
| if (unlikely(!p)) |
| goto out_overflow; |
| if (!ntohl(*p++)) { |
| p = xdr_inline_decode(xdr, 4); |
| if (unlikely(!p)) |
| goto out_overflow; |
| if (!ntohl(*p++)) |
| return -EAGAIN; |
| entry->eof = 1; |
| return -EBADCOOKIE; |
| } |
| |
| p = xdr_inline_decode(xdr, 12); |
| if (unlikely(!p)) |
| goto out_overflow; |
| entry->prev_cookie = entry->cookie; |
| p = xdr_decode_hyper(p, &entry->cookie); |
| entry->len = ntohl(*p++); |
| |
| p = xdr_inline_decode(xdr, entry->len); |
| if (unlikely(!p)) |
| goto out_overflow; |
| entry->name = (const char *) p; |
| |
| /* |
| * In case the server doesn't return an inode number, |
| * we fake one here. (We don't use inode number 0, |
| * since glibc seems to choke on it...) |
| */ |
| entry->ino = 1; |
| entry->fattr->valid = 0; |
| |
| if (decode_attr_bitmap(xdr, bitmap) < 0) |
| goto out_overflow; |
| |
| if (decode_attr_length(xdr, &len, &p) < 0) |
| goto out_overflow; |
| |
| if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh, |
| entry->server, 1) < 0) |
| goto out_overflow; |
| if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID) |
| entry->ino = entry->fattr->fileid; |
| |
| entry->d_type = DT_UNKNOWN; |
| if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE) |
| entry->d_type = nfs_umode_to_dtype(entry->fattr->mode); |
| |
| if (verify_attr_len(xdr, p, len) < 0) |
| goto out_overflow; |
| |
| p = xdr_inline_peek(xdr, 8); |
| if (p != NULL) |
| entry->eof = !p[0] && p[1]; |
| else |
| entry->eof = 0; |
| |
| return 0; |
| |
| out_overflow: |
| print_overflow_msg(__func__, xdr); |
| return -EAGAIN; |
| } |
| |
| /* |
| * We need to translate between nfs status return values and |
| * the local errno values which may not be the same. |
| */ |
| static struct { |
| int stat; |
| int errno; |
| } nfs_errtbl[] = { |
| { NFS4_OK, 0 }, |
| { NFS4ERR_PERM, -EPERM }, |
| { NFS4ERR_NOENT, -ENOENT }, |
| { NFS4ERR_IO, -errno_NFSERR_IO}, |
| { NFS4ERR_NXIO, -ENXIO }, |
| { NFS4ERR_ACCESS, -EACCES }, |
| { NFS4ERR_EXIST, -EEXIST }, |
| { NFS4ERR_XDEV, -EXDEV }, |
| { NFS4ERR_NOTDIR, -ENOTDIR }, |
| { NFS4ERR_ISDIR, -EISDIR }, |
| { NFS4ERR_INVAL, -EINVAL }, |
| { NFS4ERR_FBIG, -EFBIG }, |
| { NFS4ERR_NOSPC, -ENOSPC }, |
| { NFS4ERR_ROFS, -EROFS }, |
| { NFS4ERR_MLINK, -EMLINK }, |
| { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG }, |
| { NFS4ERR_NOTEMPTY, -ENOTEMPTY }, |
| { NFS4ERR_DQUOT, -EDQUOT }, |
| { NFS4ERR_STALE, -ESTALE }, |
| { NFS4ERR_BADHANDLE, -EBADHANDLE }, |
| { NFS4ERR_BADOWNER, -EINVAL }, |
| { NFS4ERR_BADNAME, -EINVAL }, |
| { NFS4ERR_BAD_COOKIE, -EBADCOOKIE }, |
| { NFS4ERR_NOTSUPP, -ENOTSUPP }, |
| { NFS4ERR_TOOSMALL, -ETOOSMALL }, |
| { NFS4ERR_SERVERFAULT, -EREMOTEIO }, |
| { NFS4ERR_BADTYPE, -EBADTYPE }, |
| { NFS4ERR_LOCKED, -EAGAIN }, |
| { NFS4ERR_SYMLINK, -ELOOP }, |
| { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP }, |
| { NFS4ERR_DEADLOCK, -EDEADLK }, |
| { NFS4ERR_WRONGSEC, -EPERM }, /* FIXME: this needs |
| * to be handled by a |
| * middle-layer. |
| */ |
| { -1, -EIO } |
| }; |
| |
| /* |
| * Convert an NFS error code to a local one. |
| * This one is used jointly by NFSv2 and NFSv3. |
| */ |
| static int |
| nfs4_stat_to_errno(int stat) |
| { |
| int i; |
| for (i = 0; nfs_errtbl[i].stat != -1; i++) { |
| if (nfs_errtbl[i].stat == stat) |
| return nfs_errtbl[i].errno; |
| } |
| if (stat <= 10000 || stat > 10100) { |
| /* The server is looney tunes. */ |
| return -EREMOTEIO; |
| } |
| /* If we cannot translate the error, the recovery routines should |
| * handle it. |
| * Note: remaining NFSv4 error codes have values > 10000, so should |
| * not conflict with native Linux error codes. |
| */ |
| return -stat; |
| } |
| |
| #define PROC(proc, argtype, restype) \ |
| [NFSPROC4_CLNT_##proc] = { \ |
| .p_proc = NFSPROC4_COMPOUND, \ |
| .p_encode = (kxdrproc_t)nfs4_xdr_##argtype, \ |
| .p_decode = (kxdrproc_t)nfs4_xdr_##restype, \ |
| .p_arglen = NFS4_##argtype##_sz, \ |
| .p_replen = NFS4_##restype##_sz, \ |
| .p_statidx = NFSPROC4_CLNT_##proc, \ |
| .p_name = #proc, \ |
| } |
| |
| struct rpc_procinfo nfs4_procedures[] = { |
| PROC(READ, enc_read, dec_read), |
| PROC(WRITE, enc_write, dec_write), |
| PROC(COMMIT, enc_commit, dec_commit), |
| PROC(OPEN, enc_open, dec_open), |
| PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm), |
| PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr), |
| PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade), |
| PROC(CLOSE, enc_close, dec_close), |
| PROC(SETATTR, enc_setattr, dec_setattr), |
| PROC(FSINFO, enc_fsinfo, dec_fsinfo), |
| PROC(RENEW, enc_renew, dec_renew), |
| PROC(SETCLIENTID, enc_setclientid, dec_setclientid), |
| PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm), |
| PROC(LOCK, enc_lock, dec_lock), |
| PROC(LOCKT, enc_lockt, dec_lockt), |
| PROC(LOCKU, enc_locku, dec_locku), |
| PROC(ACCESS, enc_access, dec_access), |
| PROC(GETATTR, enc_getattr, dec_getattr), |
| PROC(LOOKUP, enc_lookup, dec_lookup), |
| PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root), |
| PROC(REMOVE, enc_remove, dec_remove), |
| PROC(RENAME, enc_rename, dec_rename), |
| PROC(LINK, enc_link, dec_link), |
| PROC(SYMLINK, enc_symlink, dec_symlink), |
| PROC(CREATE, enc_create, dec_create), |
| PROC(PATHCONF, enc_pathconf, dec_pathconf), |
| PROC(STATFS, enc_statfs, dec_statfs), |
| PROC(READLINK, enc_readlink, dec_readlink), |
| PROC(READDIR, enc_readdir, dec_readdir), |
| PROC(SERVER_CAPS, enc_server_caps, dec_server_caps), |
| PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn), |
| PROC(GETACL, enc_getacl, dec_getacl), |
| PROC(SETACL, enc_setacl, dec_setacl), |
| PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations), |
| PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner), |
| #if defined(CONFIG_NFS_V4_1) |
| PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id), |
| PROC(CREATE_SESSION, enc_create_session, dec_create_session), |
| PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session), |
| PROC(SEQUENCE, enc_sequence, dec_sequence), |
| PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time), |
| PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete), |
| PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo), |
| PROC(LAYOUTGET, enc_layoutget, dec_layoutget), |
| #endif /* CONFIG_NFS_V4_1 */ |
| }; |
| |
| struct rpc_version nfs_version4 = { |
| .number = 4, |
| .nrprocs = ARRAY_SIZE(nfs4_procedures), |
| .procs = nfs4_procedures |
| }; |
| |
| /* |
| * Local variables: |
| * c-basic-offset: 8 |
| * End: |
| */ |
