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NFSD: Replace READ* macros in nfsd4_decode_getdeviceinfo()

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Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever 2020-11-03 15:03:50 -05:00
parent aec387d590
commit 044959715f
1 changed files with 28 additions and 20 deletions
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48
fs/nfsd/nfs4xdr.c
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@ -638,6 +638,21 @@ nfsd4_decode_state_owner4(struct nfsd4_compoundargs *argp,
return nfsd4_decode_opaque(argp, owner);
}
#ifdef CONFIG_NFSD_PNFS
static __be32
nfsd4_decode_deviceid4(struct nfsd4_compoundargs *argp,
struct nfsd4_deviceid *devid)
{
__be32 *p;
p = xdr_inline_decode(argp->xdr, NFS4_DEVICEID4_SIZE);
if (!p)
return nfserr_bad_xdr;
memcpy(devid, p, sizeof(*devid));
return nfs_ok;
}
#endif /* CONFIG_NFSD_PNFS */
static __be32
nfsd4_decode_sessionid4(struct nfsd4_compoundargs *argp,
struct nfs4_sessionid *sessionid)
@ -1765,27 +1780,20 @@ static __be32
nfsd4_decode_getdeviceinfo(struct nfsd4_compoundargs *argp,
struct nfsd4_getdeviceinfo *gdev)
{
DECODE_HEAD;
u32 num, i;
__be32 status;
READ_BUF(sizeof(struct nfsd4_deviceid) + 3 * 4);
COPYMEM(&gdev->gd_devid, sizeof(struct nfsd4_deviceid));
gdev->gd_layout_type = be32_to_cpup(p++);
gdev->gd_maxcount = be32_to_cpup(p++);
num = be32_to_cpup(p++);
if (num) {
if (num > 1000)
goto xdr_error;
READ_BUF(4 * num);
gdev->gd_notify_types = be32_to_cpup(p++);
for (i = 1; i < num; i++) {
if (be32_to_cpup(p++)) {
status = nfserr_inval;
goto out;
}
}
}
DECODE_TAIL;
status = nfsd4_decode_deviceid4(argp, &gdev->gd_devid);
if (status)
return status;
if (xdr_stream_decode_u32(argp->xdr, &gdev->gd_layout_type) < 0)
return nfserr_bad_xdr;
if (xdr_stream_decode_u32(argp->xdr, &gdev->gd_maxcount) < 0)
return nfserr_bad_xdr;
if (xdr_stream_decode_uint32_array(argp->xdr,
&gdev->gd_notify_types, 1) < 0)
return nfserr_bad_xdr;
return nfs_ok;
}
static __be32