NFS: added FREE_STATEID call
[deliverable/linux.git] / fs / nfs / nfs4xdr.c
index d464badc00673057898db1bba7cb345ea20555bd..c191a9baa42262acabeed48b4c557e29ffdfd3db 100644 (file)
@@ -91,7 +91,7 @@ static int nfs4_stat_to_errno(int);
 #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 nfs4_fattr_bitmap_maxsz 4
 #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))
@@ -255,7 +255,7 @@ static int nfs4_stat_to_errno(int);
 #define decode_fs_locations_maxsz \
                                (0)
 #define encode_secinfo_maxsz   (op_encode_hdr_maxsz + nfs4_name_maxsz)
-#define decode_secinfo_maxsz   (op_decode_hdr_maxsz + 4 + (NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)))
+#define decode_secinfo_maxsz   (op_decode_hdr_maxsz + 1 + ((NFS_MAX_SECFLAVORS * (16 + GSS_OID_MAX_LEN)) / 4))
 
 #if defined(CONFIG_NFS_V4_1)
 #define NFS4_MAX_MACHINE_NAME_LEN (64)
@@ -343,6 +343,14 @@ static int nfs4_stat_to_errno(int);
                                1 /* FIXME: opaque lrf_body always empty at the moment */)
 #define decode_layoutreturn_maxsz (op_decode_hdr_maxsz + \
                                1 + decode_stateid_maxsz)
+#define encode_secinfo_no_name_maxsz (op_encode_hdr_maxsz + 1)
+#define decode_secinfo_no_name_maxsz decode_secinfo_maxsz
+#define encode_test_stateid_maxsz      (op_encode_hdr_maxsz + 2 + \
+                                        XDR_QUADLEN(NFS4_STATEID_SIZE))
+#define decode_test_stateid_maxsz      (op_decode_hdr_maxsz + 2 + 1)
+#define encode_free_stateid_maxsz      (op_encode_hdr_maxsz + 1 + \
+                                        XDR_QUADLEN(NFS4_STATEID_SIZE))
+#define decode_free_stateid_maxsz      (op_decode_hdr_maxsz + 1)
 #else /* CONFIG_NFS_V4_1 */
 #define encode_sequence_maxsz  0
 #define decode_sequence_maxsz  0
@@ -772,6 +780,26 @@ static int nfs4_stat_to_errno(int);
                                decode_sequence_maxsz + \
                                decode_putfh_maxsz + \
                                decode_layoutreturn_maxsz)
+#define NFS4_enc_secinfo_no_name_sz    (compound_encode_hdr_maxsz + \
+                                       encode_sequence_maxsz + \
+                                       encode_putrootfh_maxsz +\
+                                       encode_secinfo_no_name_maxsz)
+#define NFS4_dec_secinfo_no_name_sz    (compound_decode_hdr_maxsz + \
+                                       decode_sequence_maxsz + \
+                                       decode_putrootfh_maxsz + \
+                                       decode_secinfo_no_name_maxsz)
+#define NFS4_enc_test_stateid_sz       (compound_encode_hdr_maxsz + \
+                                        encode_sequence_maxsz + \
+                                        encode_test_stateid_maxsz)
+#define NFS4_dec_test_stateid_sz       (compound_decode_hdr_maxsz + \
+                                        decode_sequence_maxsz + \
+                                        decode_test_stateid_maxsz)
+#define NFS4_enc_free_stateid_sz       (compound_encode_hdr_maxsz + \
+                                        encode_sequence_maxsz + \
+                                        encode_free_stateid_maxsz)
+#define NFS4_dec_free_stateid_sz       (compound_decode_hdr_maxsz + \
+                                        decode_sequence_maxsz + \
+                                        decode_free_stateid_maxsz)
 
 const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
                                      compound_encode_hdr_maxsz +
@@ -1725,7 +1753,7 @@ static void encode_create_session(struct xdr_stream *xdr,
        *p++ = cpu_to_be32(args->flags);                        /*flags */
 
        /* Fore Channel */
-       *p++ = cpu_to_be32(args->fc_attrs.headerpadsz); /* header padding size */
+       *p++ = cpu_to_be32(0);                          /* 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 */
@@ -1734,7 +1762,7 @@ static void encode_create_session(struct xdr_stream *xdr,
        *p++ = cpu_to_be32(0);                          /* rdmachannel_attrs */
 
        /* Back Channel */
-       *p++ = cpu_to_be32(args->fc_attrs.headerpadsz); /* header padding size */
+       *p++ = cpu_to_be32(0);                          /* 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 */
@@ -1875,6 +1903,7 @@ encode_layoutget(struct xdr_stream *xdr,
 
 static int
 encode_layoutcommit(struct xdr_stream *xdr,
+                   struct inode *inode,
                    const struct nfs4_layoutcommit_args *args,
                    struct compound_hdr *hdr)
 {
@@ -1883,7 +1912,7 @@ encode_layoutcommit(struct xdr_stream *xdr,
        dprintk("%s: lbw: %llu type: %d\n", __func__, args->lastbytewritten,
                NFS_SERVER(args->inode)->pnfs_curr_ld->id);
 
-       p = reserve_space(xdr, 48 + NFS4_STATEID_SIZE);
+       p = reserve_space(xdr, 44 + NFS4_STATEID_SIZE);
        *p++ = cpu_to_be32(OP_LAYOUTCOMMIT);
        /* Only whole file layouts */
        p = xdr_encode_hyper(p, 0); /* offset */
@@ -1894,7 +1923,14 @@ encode_layoutcommit(struct xdr_stream *xdr,
        p = xdr_encode_hyper(p, args->lastbytewritten);
        *p++ = cpu_to_be32(0); /* Never send time_modify_changed */
        *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */
-       *p++ = cpu_to_be32(0); /* no file layout payload */
+
+       if (NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit)
+               NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit(
+                       NFS_I(inode)->layout, xdr, args);
+       else {
+               p = reserve_space(xdr, 4);
+               *p = cpu_to_be32(0); /* no layout-type payload */
+       }
 
        hdr->nops++;
        hdr->replen += decode_layoutcommit_maxsz;
@@ -1930,6 +1966,46 @@ encode_layoutreturn(struct xdr_stream *xdr,
        hdr->nops++;
        hdr->replen += decode_layoutreturn_maxsz;
 }
+
+static int
+encode_secinfo_no_name(struct xdr_stream *xdr,
+                      const struct nfs41_secinfo_no_name_args *args,
+                      struct compound_hdr *hdr)
+{
+       __be32 *p;
+       p = reserve_space(xdr, 8);
+       *p++ = cpu_to_be32(OP_SECINFO_NO_NAME);
+       *p++ = cpu_to_be32(args->style);
+       hdr->nops++;
+       hdr->replen += decode_secinfo_no_name_maxsz;
+       return 0;
+}
+
+static void encode_test_stateid(struct xdr_stream *xdr,
+                               struct nfs41_test_stateid_args *args,
+                               struct compound_hdr *hdr)
+{
+       __be32 *p;
+
+       p = reserve_space(xdr, 8 + NFS4_STATEID_SIZE);
+       *p++ = cpu_to_be32(OP_TEST_STATEID);
+       *p++ = cpu_to_be32(1);
+       xdr_encode_opaque_fixed(p, args->stateid->data, NFS4_STATEID_SIZE);
+       hdr->nops++;
+       hdr->replen += decode_test_stateid_maxsz;
+}
+
+static void encode_free_stateid(struct xdr_stream *xdr,
+                               struct nfs41_free_stateid_args *args,
+                               struct compound_hdr *hdr)
+{
+       __be32 *p;
+       p = reserve_space(xdr, 4 + NFS4_STATEID_SIZE);
+       *p++ = cpu_to_be32(OP_FREE_STATEID);
+       xdr_encode_opaque_fixed(p, args->stateid->data, NFS4_STATEID_SIZE);
+       hdr->nops++;
+       hdr->replen += decode_free_stateid_maxsz;
+}
 #endif /* CONFIG_NFS_V4_1 */
 
 /*
@@ -2751,6 +2827,8 @@ static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
                                      struct xdr_stream *xdr,
                                      struct nfs4_layoutcommit_args *args)
 {
+       struct nfs4_layoutcommit_data *data =
+               container_of(args, struct nfs4_layoutcommit_data, args);
        struct compound_hdr hdr = {
                .minorversion = nfs4_xdr_minorversion(&args->seq_args),
        };
@@ -2758,7 +2836,7 @@ static void nfs4_xdr_enc_layoutcommit(struct rpc_rqst *req,
        encode_compound_hdr(xdr, req, &hdr);
        encode_sequence(xdr, &args->seq_args, &hdr);
        encode_putfh(xdr, NFS_FH(args->inode), &hdr);
-       encode_layoutcommit(xdr, args, &hdr);
+       encode_layoutcommit(xdr, data->args.inode, args, &hdr);
        encode_getfattr(xdr, args->bitmask, &hdr);
        encode_nops(&hdr);
 }
@@ -2780,6 +2858,59 @@ static void nfs4_xdr_enc_layoutreturn(struct rpc_rqst *req,
        encode_layoutreturn(xdr, args, &hdr);
        encode_nops(&hdr);
 }
+
+/*
+ * Encode SECINFO_NO_NAME request
+ */
+static int nfs4_xdr_enc_secinfo_no_name(struct rpc_rqst *req,
+                                       struct xdr_stream *xdr,
+                                       struct nfs41_secinfo_no_name_args *args)
+{
+       struct compound_hdr hdr = {
+               .minorversion = nfs4_xdr_minorversion(&args->seq_args),
+       };
+
+       encode_compound_hdr(xdr, req, &hdr);
+       encode_sequence(xdr, &args->seq_args, &hdr);
+       encode_putrootfh(xdr, &hdr);
+       encode_secinfo_no_name(xdr, args, &hdr);
+       encode_nops(&hdr);
+       return 0;
+}
+
+/*
+ *  Encode TEST_STATEID request
+ */
+static void nfs4_xdr_enc_test_stateid(struct rpc_rqst *req,
+                                     struct xdr_stream *xdr,
+                                     struct nfs41_test_stateid_args *args)
+{
+       struct compound_hdr hdr = {
+               .minorversion = nfs4_xdr_minorversion(&args->seq_args),
+       };
+
+       encode_compound_hdr(xdr, req, &hdr);
+       encode_sequence(xdr, &args->seq_args, &hdr);
+       encode_test_stateid(xdr, args, &hdr);
+       encode_nops(&hdr);
+}
+
+/*
+ *  Encode FREE_STATEID request
+ */
+static void nfs4_xdr_enc_free_stateid(struct rpc_rqst *req,
+                                    struct xdr_stream *xdr,
+                                    struct nfs41_free_stateid_args *args)
+{
+       struct compound_hdr hdr = {
+               .minorversion = nfs4_xdr_minorversion(&args->seq_args),
+       };
+
+       encode_compound_hdr(xdr, req, &hdr);
+       encode_sequence(xdr, &args->seq_args, &hdr);
+       encode_free_stateid(xdr, args, &hdr);
+       encode_nops(&hdr);
+}
 #endif /* CONFIG_NFS_V4_1 */
 
 static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
@@ -3088,7 +3219,7 @@ out_overflow:
        return -EIO;
 }
 
-static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap)
+static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap, int32_t *res)
 {
        __be32 *p;
 
@@ -3099,7 +3230,7 @@ static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap)
                if (unlikely(!p))
                        goto out_overflow;
                bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
-               return -be32_to_cpup(p);
+               *res = -be32_to_cpup(p);
        }
        return 0;
 out_overflow:
@@ -4060,6 +4191,7 @@ static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
        int status;
        umode_t fmode = 0;
        uint32_t type;
+       int32_t err;
 
        status = decode_attr_type(xdr, bitmap, &type);
        if (status < 0)
@@ -4085,13 +4217,12 @@ static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
                goto xdr_error;
        fattr->valid |= status;
 
-       status = decode_attr_error(xdr, bitmap);
-       if (status == -NFS4ERR_WRONGSEC) {
-               nfs_fixup_secinfo_attributes(fattr, fh);
-               status = 0;
-       }
+       err = 0;
+       status = decode_attr_error(xdr, bitmap, &err);
        if (status < 0)
                goto xdr_error;
+       if (err == -NFS4ERR_WRONGSEC)
+               nfs_fixup_secinfo_attributes(fattr, fh);
 
        status = decode_attr_filehandle(xdr, bitmap, fh);
        if (status < 0)
@@ -4967,11 +5098,17 @@ static int decode_exchange_id(struct xdr_stream *xdr,
        if (unlikely(status))
                return status;
 
-       /* Throw away server_scope */
+       /* Save server_scope */
        status = decode_opaque_inline(xdr, &dummy, &dummy_str);
        if (unlikely(status))
                return status;
 
+       if (unlikely(dummy > NFS4_OPAQUE_LIMIT))
+               return -EIO;
+
+       memcpy(res->server_scope->server_scope, dummy_str, dummy);
+       res->server_scope->server_scope_sz = dummy;
+
        /* Throw away Implementation id array */
        status = decode_opaque_inline(xdr, &dummy, &dummy_str);
        if (unlikely(status))
@@ -4987,12 +5124,14 @@ static int decode_chan_attrs(struct xdr_stream *xdr,
                             struct nfs4_channel_attrs *attrs)
 {
        __be32 *p;
-       u32 nr_attrs;
+       u32 nr_attrs, val;
 
        p = xdr_inline_decode(xdr, 28);
        if (unlikely(!p))
                goto out_overflow;
-       attrs->headerpadsz = be32_to_cpup(p++);
+       val = be32_to_cpup(p++);        /* headerpadsz */
+       if (val)
+               return -EINVAL;         /* no support for header padding yet */
        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++);
@@ -5310,6 +5449,55 @@ out_overflow:
        print_overflow_msg(__func__, xdr);
        return -EIO;
 }
+
+static int decode_test_stateid(struct xdr_stream *xdr,
+                              struct nfs41_test_stateid_res *res)
+{
+       __be32 *p;
+       int status;
+       int num_res;
+
+       status = decode_op_hdr(xdr, OP_TEST_STATEID);
+       if (status)
+               return status;
+
+       p = xdr_inline_decode(xdr, 4);
+       if (unlikely(!p))
+               goto out_overflow;
+       num_res = be32_to_cpup(p++);
+       if (num_res != 1)
+               goto out;
+
+       p = xdr_inline_decode(xdr, 4);
+       if (unlikely(!p))
+               goto out_overflow;
+       res->status = be32_to_cpup(p++);
+       return res->status;
+out_overflow:
+       print_overflow_msg(__func__, xdr);
+out:
+       return -EIO;
+}
+
+static int decode_free_stateid(struct xdr_stream *xdr,
+                              struct nfs41_free_stateid_res *res)
+{
+       __be32 *p;
+       int status;
+
+       status = decode_op_hdr(xdr, OP_FREE_STATEID);
+       if (status)
+               return status;
+
+       p = xdr_inline_decode(xdr, 4);
+       if (unlikely(!p))
+               goto out_overflow;
+       res->status = be32_to_cpup(p++);
+       return res->status;
+out_overflow:
+       print_overflow_msg(__func__, xdr);
+       return -EIO;
+}
 #endif /* CONFIG_NFS_V4_1 */
 
 /*
@@ -6449,6 +6637,72 @@ static int nfs4_xdr_dec_layoutcommit(struct rpc_rqst *rqstp,
 out:
        return status;
 }
+
+/*
+ * Decode SECINFO_NO_NAME response
+ */
+static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp,
+                                       struct xdr_stream *xdr,
+                                       struct nfs4_secinfo_res *res)
+{
+       struct compound_hdr hdr;
+       int status;
+
+       status = decode_compound_hdr(xdr, &hdr);
+       if (status)
+               goto out;
+       status = decode_sequence(xdr, &res->seq_res, rqstp);
+       if (status)
+               goto out;
+       status = decode_putrootfh(xdr);
+       if (status)
+               goto out;
+       status = decode_secinfo(xdr, res);
+out:
+       return status;
+}
+
+/*
+ * Decode TEST_STATEID response
+ */
+static int nfs4_xdr_dec_test_stateid(struct rpc_rqst *rqstp,
+                                    struct xdr_stream *xdr,
+                                    struct nfs41_test_stateid_res *res)
+{
+       struct compound_hdr hdr;
+       int status;
+
+       status = decode_compound_hdr(xdr, &hdr);
+       if (status)
+               goto out;
+       status = decode_sequence(xdr, &res->seq_res, rqstp);
+       if (status)
+               goto out;
+       status = decode_test_stateid(xdr, res);
+out:
+       return status;
+}
+
+/*
+ * Decode FREE_STATEID response
+ */
+static int nfs4_xdr_dec_free_stateid(struct rpc_rqst *rqstp,
+                                    struct xdr_stream *xdr,
+                                    struct nfs41_free_stateid_res *res)
+{
+       struct compound_hdr hdr;
+       int status;
+
+       status = decode_compound_hdr(xdr, &hdr);
+       if (status)
+               goto out;
+       status = decode_sequence(xdr, &res->seq_res, rqstp);
+       if (status)
+               goto out;
+       status = decode_free_stateid(xdr, res);
+out:
+       return status;
+}
 #endif /* CONFIG_NFS_V4_1 */
 
 /**
@@ -6651,6 +6905,9 @@ struct rpc_procinfo       nfs4_procedures[] = {
        PROC(LAYOUTGET,         enc_layoutget,          dec_layoutget),
        PROC(LAYOUTCOMMIT,      enc_layoutcommit,       dec_layoutcommit),
        PROC(LAYOUTRETURN,      enc_layoutreturn,       dec_layoutreturn),
+       PROC(SECINFO_NO_NAME,   enc_secinfo_no_name,    dec_secinfo_no_name),
+       PROC(TEST_STATEID,      enc_test_stateid,       dec_test_stateid),
+       PROC(FREE_STATEID,      enc_free_stateid,       dec_free_stateid),
 #endif /* CONFIG_NFS_V4_1 */
 };
 
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