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NFSD: Replace READ* macros in nfsd4_decode_layoutcommit()

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Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever 2020-11-04 10:40:07 -05:00
parent 044959715f
commit 5185980d8a
1 changed files with 58 additions and 62 deletions
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120
fs/nfsd/nfs4xdr.c
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@ -274,20 +274,6 @@ nfsd4_decode_component4(struct nfsd4_compoundargs *argp, char **namp, u32 *lenp)
return nfs_ok;
}
static __be32
nfsd4_decode_time(struct nfsd4_compoundargs *argp, struct timespec64 *tv)
{
DECODE_HEAD;
READ_BUF(12);
p = xdr_decode_hyper(p, &tv->tv_sec);
tv->tv_nsec = be32_to_cpup(p++);
if (tv->tv_nsec >= (u32)1000000000)
return nfserr_inval;
DECODE_TAIL;
}
static __be32
nfsd4_decode_nfstime4(struct nfsd4_compoundargs *argp, struct timespec64 *tv)
{
@ -651,6 +637,29 @@ nfsd4_decode_deviceid4(struct nfsd4_compoundargs *argp,
memcpy(devid, p, sizeof(*devid));
return nfs_ok;
}
static __be32
nfsd4_decode_layoutupdate4(struct nfsd4_compoundargs *argp,
struct nfsd4_layoutcommit *lcp)
{
if (xdr_stream_decode_u32(argp->xdr, &lcp->lc_layout_type) < 0)
return nfserr_bad_xdr;
if (lcp->lc_layout_type < LAYOUT_NFSV4_1_FILES)
return nfserr_bad_xdr;
if (lcp->lc_layout_type >= LAYOUT_TYPE_MAX)
return nfserr_bad_xdr;
if (xdr_stream_decode_u32(argp->xdr, &lcp->lc_up_len) < 0)
return nfserr_bad_xdr;
if (lcp->lc_up_len > 0) {
lcp->lc_up_layout = xdr_inline_decode(argp->xdr, lcp->lc_up_len);
if (!lcp->lc_up_layout)
return nfserr_bad_xdr;
}
return nfs_ok;
}
#endif /* CONFIG_NFSD_PNFS */
static __be32
@ -1796,6 +1805,41 @@ nfsd4_decode_getdeviceinfo(struct nfsd4_compoundargs *argp,
return nfs_ok;
}
static __be32
nfsd4_decode_layoutcommit(struct nfsd4_compoundargs *argp,
struct nfsd4_layoutcommit *lcp)
{
__be32 *p, status;
if (xdr_stream_decode_u64(argp->xdr, &lcp->lc_seg.offset) < 0)
return nfserr_bad_xdr;
if (xdr_stream_decode_u64(argp->xdr, &lcp->lc_seg.length) < 0)
return nfserr_bad_xdr;
if (xdr_stream_decode_bool(argp->xdr, &lcp->lc_reclaim) < 0)
return nfserr_bad_xdr;
status = nfsd4_decode_stateid4(argp, &lcp->lc_sid);
if (status)
return status;
if (xdr_stream_decode_u32(argp->xdr, &lcp->lc_newoffset) < 0)
return nfserr_bad_xdr;
if (lcp->lc_newoffset) {
if (xdr_stream_decode_u64(argp->xdr, &lcp->lc_last_wr) < 0)
return nfserr_bad_xdr;
} else
lcp->lc_last_wr = 0;
p = xdr_inline_decode(argp->xdr, XDR_UNIT);
if (!p)
return nfserr_bad_xdr;
if (xdr_item_is_present(p)) {
status = nfsd4_decode_nfstime4(argp, &lcp->lc_mtime);
if (status)
return status;
} else {
lcp->lc_mtime.tv_nsec = UTIME_NOW;
}
return nfsd4_decode_layoutupdate4(argp, lcp);
}
static __be32
nfsd4_decode_layoutget(struct nfsd4_compoundargs *argp,
struct nfsd4_layoutget *lgp)
@ -1820,54 +1864,6 @@ nfsd4_decode_layoutget(struct nfsd4_compoundargs *argp,
DECODE_TAIL;
}
static __be32
nfsd4_decode_layoutcommit(struct nfsd4_compoundargs *argp,
struct nfsd4_layoutcommit *lcp)
{
DECODE_HEAD;
u32 timechange;
READ_BUF(20);
p = xdr_decode_hyper(p, &lcp->lc_seg.offset);
p = xdr_decode_hyper(p, &lcp->lc_seg.length);
lcp->lc_reclaim = be32_to_cpup(p++);
status = nfsd4_decode_stateid(argp, &lcp->lc_sid);
if (status)
return status;
READ_BUF(4);
lcp->lc_newoffset = be32_to_cpup(p++);
if (lcp->lc_newoffset) {
READ_BUF(8);
p = xdr_decode_hyper(p, &lcp->lc_last_wr);
} else
lcp->lc_last_wr = 0;
READ_BUF(4);
timechange = be32_to_cpup(p++);
if (timechange) {
status = nfsd4_decode_time(argp, &lcp->lc_mtime);
if (status)
return status;
} else {
lcp->lc_mtime.tv_nsec = UTIME_NOW;
}
READ_BUF(8);
lcp->lc_layout_type = be32_to_cpup(p++);
/*
* Save the layout update in XDR format and let the layout driver deal
* with it later.
*/
lcp->lc_up_len = be32_to_cpup(p++);
if (lcp->lc_up_len > 0) {
READ_BUF(lcp->lc_up_len);
READMEM(lcp->lc_up_layout, lcp->lc_up_len);
}
DECODE_TAIL;
}
static __be32
nfsd4_decode_layoutreturn(struct nfsd4_compoundargs *argp,
struct nfsd4_layoutreturn *lrp)