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116 lines
2.7 KiB
116 lines
2.7 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* Copyright (c) 2016 Tom Haynes <[email protected]> |
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*/ |
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#include <linux/sunrpc/svc.h> |
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#include <linux/nfs4.h> |
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#include "nfsd.h" |
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#include "flexfilelayoutxdr.h" |
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#define NFSDDBG_FACILITY NFSDDBG_PNFS |
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struct ff_idmap { |
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char buf[11]; |
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int len; |
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}; |
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__be32 |
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nfsd4_ff_encode_layoutget(struct xdr_stream *xdr, |
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struct nfsd4_layoutget *lgp) |
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{ |
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struct pnfs_ff_layout *fl = lgp->lg_content; |
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int len, mirror_len, ds_len, fh_len; |
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__be32 *p; |
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/* |
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* Unlike nfsd4_encode_user, we know these will |
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* always be stringified. |
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*/ |
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struct ff_idmap uid; |
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struct ff_idmap gid; |
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fh_len = 4 + fl->fh.size; |
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uid.len = sprintf(uid.buf, "%u", from_kuid(&init_user_ns, fl->uid)); |
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gid.len = sprintf(gid.buf, "%u", from_kgid(&init_user_ns, fl->gid)); |
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/* 8 + len for recording the length, name, and padding */ |
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ds_len = 20 + sizeof(stateid_opaque_t) + 4 + fh_len + |
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8 + uid.len + 8 + gid.len; |
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mirror_len = 4 + ds_len; |
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/* The layout segment */ |
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len = 20 + mirror_len; |
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p = xdr_reserve_space(xdr, sizeof(__be32) + len); |
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if (!p) |
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return nfserr_toosmall; |
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*p++ = cpu_to_be32(len); |
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p = xdr_encode_hyper(p, 0); /* stripe unit of 1 */ |
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*p++ = cpu_to_be32(1); /* single mirror */ |
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*p++ = cpu_to_be32(1); /* single data server */ |
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p = xdr_encode_opaque_fixed(p, &fl->deviceid, |
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sizeof(struct nfsd4_deviceid)); |
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*p++ = cpu_to_be32(1); /* efficiency */ |
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*p++ = cpu_to_be32(fl->stateid.si_generation); |
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p = xdr_encode_opaque_fixed(p, &fl->stateid.si_opaque, |
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sizeof(stateid_opaque_t)); |
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*p++ = cpu_to_be32(1); /* single file handle */ |
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p = xdr_encode_opaque(p, fl->fh.data, fl->fh.size); |
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p = xdr_encode_opaque(p, uid.buf, uid.len); |
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p = xdr_encode_opaque(p, gid.buf, gid.len); |
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*p++ = cpu_to_be32(fl->flags); |
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*p++ = cpu_to_be32(0); /* No stats collect hint */ |
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return 0; |
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} |
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__be32 |
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nfsd4_ff_encode_getdeviceinfo(struct xdr_stream *xdr, |
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struct nfsd4_getdeviceinfo *gdp) |
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{ |
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struct pnfs_ff_device_addr *da = gdp->gd_device; |
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int len; |
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int ver_len; |
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int addr_len; |
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__be32 *p; |
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/* len + padding for two strings */ |
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addr_len = 16 + da->netaddr.netid_len + da->netaddr.addr_len; |
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ver_len = 20; |
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len = 4 + ver_len + 4 + addr_len; |
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p = xdr_reserve_space(xdr, len + sizeof(__be32)); |
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if (!p) |
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return nfserr_resource; |
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/* |
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* Fill in the overall length and number of volumes at the beginning |
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* of the layout. |
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*/ |
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*p++ = cpu_to_be32(len); |
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*p++ = cpu_to_be32(1); /* 1 netaddr */ |
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p = xdr_encode_opaque(p, da->netaddr.netid, da->netaddr.netid_len); |
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p = xdr_encode_opaque(p, da->netaddr.addr, da->netaddr.addr_len); |
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*p++ = cpu_to_be32(1); /* 1 versions */ |
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*p++ = cpu_to_be32(da->version); |
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*p++ = cpu_to_be32(da->minor_version); |
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*p++ = cpu_to_be32(da->rsize); |
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*p++ = cpu_to_be32(da->wsize); |
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*p++ = cpu_to_be32(da->tightly_coupled); |
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return 0; |
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}
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