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[v3,14/85] NFSD: Replace READ* macros that decode the fattr4 owner attribute

Message ID 160616191276.51996.13499570109676145470.stgit@klimt.1015granger.net (mailing list archive)
State New
Headers show
Series Update NFSD XDR functions | expand

Commit Message

Chuck Lever Nov. 23, 2020, 8:05 p.m. UTC
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
---
 fs/nfsd/nfs4xdr.c |   15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)
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Patch

diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 597da7cb28af..0b46cb9e3867 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -360,11 +360,16 @@  nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval,
 		iattr->ia_valid |= ATTR_MODE;
 	}
 	if (bmval[1] & FATTR4_WORD1_OWNER) {
-		READ_BUF(4);
-		dummy32 = be32_to_cpup(p++);
-		READ_BUF(dummy32);
-		READMEM(buf, dummy32);
-		if ((status = nfsd_map_name_to_uid(argp->rqstp, buf, dummy32, &iattr->ia_uid)))
+		u32 length;
+
+		if (xdr_stream_decode_u32(argp->xdr, &length) < 0)
+			return nfserr_bad_xdr;
+		p = xdr_inline_decode(argp->xdr, length);
+		if (!p)
+			return nfserr_bad_xdr;
+		status = nfsd_map_name_to_uid(argp->rqstp, (char *)p, length,
+					      &iattr->ia_uid);
+		if (status)
 			return status;
 		iattr->ia_valid |= ATTR_UID;
 	}