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NFSD: Replace READ* macros in nfsd4_decode_commit()

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Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever 2020-11-03 13:19:51 -05:00
parent d3d2f38154
commit cbd9abb370
2 changed files with 26 additions and 7 deletions
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12
fs/nfsd/nfs4xdr.c
View File

@ -581,13 +581,11 @@ nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close)
static __be32
nfsd4_decode_commit(struct nfsd4_compoundargs *argp, struct nfsd4_commit *commit)
{
DECODE_HEAD;
READ_BUF(12);
p = xdr_decode_hyper(p, &commit->co_offset);
commit->co_count = be32_to_cpup(p++);
DECODE_TAIL;
if (xdr_stream_decode_u64(argp->xdr, &commit->co_offset) < 0)
return nfserr_bad_xdr;
if (xdr_stream_decode_u32(argp->xdr, &commit->co_count) < 0)
return nfserr_bad_xdr;
return nfs_ok;
}
static __be32

21
include/linux/sunrpc/xdr.h
View File

@ -571,6 +571,27 @@ xdr_stream_decode_u32(struct xdr_stream *xdr, __u32 *ptr)
return 0;
}
/**
* xdr_stream_decode_u64 - Decode a 64-bit integer
* @xdr: pointer to xdr_stream
* @ptr: location to store 64-bit integer
*
* Return values:
* %0 on success
* %-EBADMSG on XDR buffer overflow
*/
static inline ssize_t
xdr_stream_decode_u64(struct xdr_stream *xdr, __u64 *ptr)
{
const size_t count = sizeof(*ptr);
__be32 *p = xdr_inline_decode(xdr, count);
if (unlikely(!p))
return -EBADMSG;
xdr_decode_hyper(p, ptr);
return 0;
}
/**
* xdr_stream_decode_opaque_fixed - Decode fixed length opaque xdr data
* @xdr: pointer to xdr_stream