1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2016 Tom Haynes <loghyr@primarydata.com>
5 #include <linux/sunrpc/svc.h>
6 #include <linux/nfs4.h>
9 #include "flexfilelayoutxdr.h"
11 #define NFSDDBG_FACILITY NFSDDBG_PNFS
19 nfsd4_ff_encode_layoutget(struct xdr_stream *xdr,
20 struct nfsd4_layoutget *lgp)
22 struct pnfs_ff_layout *fl = lgp->lg_content;
23 int len, mirror_len, ds_len, fh_len;
27 * Unlike nfsd4_encode_user, we know these will
28 * always be stringified.
33 fh_len = 4 + fl->fh.size;
35 uid.len = sprintf(uid.buf, "%u", from_kuid(&init_user_ns, fl->uid));
36 gid.len = sprintf(gid.buf, "%u", from_kgid(&init_user_ns, fl->gid));
38 /* 8 + len for recording the length, name, and padding */
39 ds_len = 20 + sizeof(stateid_opaque_t) + 4 + fh_len +
40 8 + uid.len + 8 + gid.len;
42 mirror_len = 4 + ds_len;
44 /* The layout segment */
45 len = 20 + mirror_len;
47 p = xdr_reserve_space(xdr, sizeof(__be32) + len);
49 return nfserr_toosmall;
51 *p++ = cpu_to_be32(len);
52 p = xdr_encode_hyper(p, 0); /* stripe unit of 1 */
54 *p++ = cpu_to_be32(1); /* single mirror */
55 *p++ = cpu_to_be32(1); /* single data server */
57 p = xdr_encode_opaque_fixed(p, &fl->deviceid,
58 sizeof(struct nfsd4_deviceid));
60 *p++ = cpu_to_be32(1); /* efficiency */
62 *p++ = cpu_to_be32(fl->stateid.si_generation);
63 p = xdr_encode_opaque_fixed(p, &fl->stateid.si_opaque,
64 sizeof(stateid_opaque_t));
66 *p++ = cpu_to_be32(1); /* single file handle */
67 p = xdr_encode_opaque(p, fl->fh.data, fl->fh.size);
69 p = xdr_encode_opaque(p, uid.buf, uid.len);
70 p = xdr_encode_opaque(p, gid.buf, gid.len);
72 *p++ = cpu_to_be32(fl->flags);
73 *p++ = cpu_to_be32(0); /* No stats collect hint */
79 nfsd4_ff_encode_getdeviceinfo(struct xdr_stream *xdr,
80 struct nfsd4_getdeviceinfo *gdp)
82 struct pnfs_ff_device_addr *da = gdp->gd_device;
88 /* len + padding for two strings */
89 addr_len = 16 + da->netaddr.netid_len + da->netaddr.addr_len;
92 len = 4 + ver_len + 4 + addr_len;
94 p = xdr_reserve_space(xdr, len + sizeof(__be32));
96 return nfserr_resource;
99 * Fill in the overall length and number of volumes at the beginning
102 *p++ = cpu_to_be32(len);
103 *p++ = cpu_to_be32(1); /* 1 netaddr */
104 p = xdr_encode_opaque(p, da->netaddr.netid, da->netaddr.netid_len);
105 p = xdr_encode_opaque(p, da->netaddr.addr, da->netaddr.addr_len);
107 *p++ = cpu_to_be32(1); /* 1 versions */
109 *p++ = cpu_to_be32(da->version);
110 *p++ = cpu_to_be32(da->minor_version);
111 *p++ = cpu_to_be32(da->rsize);
112 *p++ = cpu_to_be32(da->wsize);
113 *p++ = cpu_to_be32(da->tightly_coupled);