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From: Chuck Lever <chuck.lever@oracle.com>
To: linux-nfs@vger.kernel.org
Subject: [PATCH v1 13/61] NFSD: Replace READ* macros in nfsd4_decode_lock()
Date: Fri, 13 Nov 2020 10:03:31 -0500
Message-ID: <160527981188.6186.5472938610268206294.stgit@klimt.1015granger.net> (raw)
In-Reply-To: <160527962905.6186.17550620763636619885.stgit@klimt.1015granger.net>

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
---
 fs/nfsd/nfs4xdr.c         |  121 +++++++++++++++++++++++++++++++++------------
 include/uapi/linux/nfs4.h |    1 
 2 files changed, 91 insertions(+), 31 deletions(-)

diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index c621a38e7874..35329e3d1339 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -484,6 +484,32 @@ nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval,
 	DECODE_TAIL;
 }
 
+static __be32 nfsd4_decode_clientid4(struct nfsd4_compoundargs *argp,
+				     clientid_t *clientid)
+{
+	__be32 *p;
+
+	p = xdr_inline_decode(argp->xdr, NFS4_CLIENTID_SIZE);
+	if (!p)
+		goto xdr_error;
+	memcpy(clientid, p, sizeof(*clientid));
+	return nfs_ok;
+xdr_error:
+	return nfserr_bad_xdr;
+}
+
+static __be32 nfsd4_decode_state_owner4(struct nfsd4_compoundargs *argp,
+					clientid_t *clientid,
+					struct xdr_netobj *owner)
+{
+	__be32 status;
+
+	status = nfsd4_decode_clientid4(argp, clientid);
+	if (status)
+		return status;
+	return nfsd4_decode_opaque(argp, owner);
+}
+
 static __be32
 nfsd4_decode_stateid4(struct nfsd4_compoundargs *argp, stateid_t *sid)
 {
@@ -706,44 +732,77 @@ nfsd4_decode_link(struct nfsd4_compoundargs *argp, struct nfsd4_link *link)
 	return nfsd4_decode_component4(argp, &link->li_name, &link->li_namelen);
 }
 
+static __be32
+nfsd4_decode_open_to_lock_owner4(struct nfsd4_compoundargs *argp,
+				 struct nfsd4_lock *lock)
+{
+	__be32 status;
+
+	lock->lk_is_new = 1;
+
+	if (xdr_stream_decode_u32(argp->xdr, &lock->lk_new_open_seqid) < 0)
+		goto xdr_error;
+	status = nfsd4_decode_stateid4(argp, &lock->lk_new_open_stateid);
+	if (status)
+		goto out;
+	if (xdr_stream_decode_u32(argp->xdr, &lock->lk_new_lock_seqid) < 0)
+		goto xdr_error;
+	status = nfsd4_decode_state_owner4(argp, &lock->lk_new_clientid,
+					   &lock->lk_new_owner);
+
+out:
+	return status;
+xdr_error:
+	return nfserr_bad_xdr;
+}
+
+static __be32
+nfsd4_decode_exist_lock_owner4(struct nfsd4_compoundargs *argp,
+			       struct nfsd4_lock *lock)
+{
+	__be32 status;
+
+	lock->lk_is_new = 0;
+
+	status = nfsd4_decode_stateid4(argp, &lock->lk_old_lock_stateid);
+	if (status)
+		goto out;
+	if (xdr_stream_decode_u32(argp->xdr, &lock->lk_old_lock_seqid) < 0)
+		goto xdr_error;
+
+	status = nfs_ok;
+out:
+	return status;
+xdr_error:
+	return nfserr_bad_xdr;
+}
+
 static __be32
 nfsd4_decode_lock(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock)
 {
-	DECODE_HEAD;
+	__be32 *p;
 
-	/*
-	* type, reclaim(boolean), offset, length, new_lock_owner(boolean)
-	*/
-	READ_BUF(28);
-	lock->lk_type = be32_to_cpup(p++);
+	if (xdr_stream_decode_u32(argp->xdr, &lock->lk_type) < 0)
+		goto xdr_error;
 	if ((lock->lk_type < NFS4_READ_LT) || (lock->lk_type > NFS4_WRITEW_LT))
 		goto xdr_error;
-	lock->lk_reclaim = be32_to_cpup(p++);
-	p = xdr_decode_hyper(p, &lock->lk_offset);
-	p = xdr_decode_hyper(p, &lock->lk_length);
-	lock->lk_is_new = be32_to_cpup(p++);
-
-	if (lock->lk_is_new) {
-		READ_BUF(4);
-		lock->lk_new_open_seqid = be32_to_cpup(p++);
-		status = nfsd4_decode_stateid4(argp, &lock->lk_new_open_stateid);
-		if (status)
-			return status;
-		READ_BUF(8 + sizeof(clientid_t));
-		lock->lk_new_lock_seqid = be32_to_cpup(p++);
-		COPYMEM(&lock->lk_new_clientid, sizeof(clientid_t));
-		lock->lk_new_owner.len = be32_to_cpup(p++);
-		READ_BUF(lock->lk_new_owner.len);
-		READMEM(lock->lk_new_owner.data, lock->lk_new_owner.len);
-	} else {
-		status = nfsd4_decode_stateid4(argp, &lock->lk_old_lock_stateid);
-		if (status)
-			return status;
-		READ_BUF(4);
-		lock->lk_old_lock_seqid = be32_to_cpup(p++);
-	}
+	p = xdr_inline_decode(argp->xdr, sizeof(__be32));
+	if (!p)
+		goto xdr_error;
+	lock->lk_reclaim = (*p == xdr_zero) ? 0 : 1;
+	if (xdr_stream_decode_u64(argp->xdr, &lock->lk_offset) < 0)
+		goto xdr_error;
+	if (xdr_stream_decode_u64(argp->xdr, &lock->lk_length) < 0)
+		goto xdr_error;
+	p = xdr_inline_decode(argp->xdr, sizeof(__be32));
+	if (!p)
+		goto xdr_error;
+	if (*p != xdr_zero)
+		return nfsd4_decode_open_to_lock_owner4(argp, lock);
+	return nfsd4_decode_exist_lock_owner4(argp, lock);
 
-	DECODE_TAIL;
+xdr_error:
+	return nfserr_bad_xdr;
 }
 
 static __be32
diff --git a/include/uapi/linux/nfs4.h b/include/uapi/linux/nfs4.h
index ed5415e0f1c1..31072a653436 100644
--- a/include/uapi/linux/nfs4.h
+++ b/include/uapi/linux/nfs4.h
@@ -21,6 +21,7 @@
 #define NFS4_STATEID_SEQID_SIZE 4
 #define NFS4_STATEID_OTHER_SIZE 12
 #define NFS4_STATEID_SIZE	(NFS4_STATEID_SEQID_SIZE + NFS4_STATEID_OTHER_SIZE)
+#define NFS4_CLIENTID_SIZE	8
 #define NFS4_FHSIZE		128
 #define NFS4_MAXPATHLEN		PATH_MAX
 #define NFS4_MAXNAMLEN		NAME_MAX



  parent reply index

Thread overview: 70+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-13 15:02 [PATCH v1 00/61] Update NFSD XDR functions Chuck Lever
2020-11-13 15:02 ` [PATCH v1 01/61] NFSD: Fix returned READDIR offset cookie Chuck Lever
2020-11-13 15:02 ` [PATCH v1 02/61] SUNRPC: Add xdr_set_scratch_page() and xdr_reset_scratch_buffer() Chuck Lever
2020-11-13 15:02 ` [PATCH v1 03/61] SUNRPC: Prepare for xdr_stream-style decoding on the server-side Chuck Lever
2020-11-13 15:02 ` [PATCH v1 04/61] NFSD: Add common helpers to decode void args and encode void results Chuck Lever
2020-11-13 15:02 ` [PATCH v1 05/61] NFSD: Replace the internals of the READ_BUF() macro Chuck Lever
2020-11-13 15:02 ` [PATCH v1 06/61] NFSD: Replace READ* macros in nfsd4_decode_access() Chuck Lever
2020-11-14  9:28   ` Christoph Hellwig
2020-11-14 18:26     ` Chuck Lever
2020-11-14 18:45       ` Christoph Hellwig
2020-11-14 18:48         ` Chuck Lever
2020-11-14 18:49           ` Christoph Hellwig
2020-11-13 15:03 ` [PATCH v1 07/61] NFSD: Replace READ* macros in nfsd4_decode_close() Chuck Lever
2020-11-14  9:29   ` Christoph Hellwig
2020-11-14 18:30     ` Chuck Lever
2020-11-14 18:47       ` Christoph Hellwig
2020-11-13 15:03 ` [PATCH v1 08/61] NFSD: Replace READ* macros in nfsd4_decode_commit() Chuck Lever
2020-11-13 15:03 ` [PATCH v1 09/61] NFSD: Replace READ* macros in nfsd4_decode_create() Chuck Lever
2020-11-13 15:03 ` [PATCH v1 10/61] NFSD: Replace READ* macros in nfsd4_decode_bitmap() Chuck Lever
2020-11-13 15:03 ` [PATCH v1 11/61] NFSD: Replace READ* macros in nfsd4_decode_link() Chuck Lever
2020-11-13 15:03 ` [PATCH v1 12/61] NFSD: Relocate nfsd4_decode_opaque() Chuck Lever
2020-11-13 15:03 ` Chuck Lever [this message]
2020-11-13 15:03 ` [PATCH v1 14/61] NFSD: Replace READ* macros in nfsd4_decode_lockt() Chuck Lever
2020-11-13 15:03 ` [PATCH v1 15/61] NFSD: Replace READ* macros in nfsd4_decode_locku() Chuck Lever
2020-11-13 15:03 ` [PATCH v1 16/61] NFSD: Replace READ* macros in nfsd4_decode_lookup() Chuck Lever
2020-11-13 15:03 ` [PATCH v1 17/61] NFSD: Replace READ* macros in nfsd4_decode_time() Chuck Lever
2020-11-13 15:03 ` [PATCH v1 18/61] NFSD: Replace READ* macros in nfsd4_decode_fattr() Chuck Lever
2020-11-13 15:04 ` [PATCH v1 19/61] NFSD: Replace READ* macros in nfsd4_decode_open() Chuck Lever
2020-11-13 15:04 ` [PATCH v1 20/61] NFSD: Replace READ* macros in nfsd4_decode_open_confirm() Chuck Lever
2020-11-13 15:04 ` [PATCH v1 21/61] NFSD: Replace READ* macros in nfsd4_decode_open_downgrade() Chuck Lever
2020-11-13 15:04 ` [PATCH v1 22/61] NFSD: Replace READ* macros in nfsd4_decode_putfh() Chuck Lever
2020-11-13 15:04 ` [PATCH v1 23/61] NFSD: Replace READ* macros in nfsd4_decode_read() Chuck Lever
2020-11-13 15:04 ` [PATCH v1 24/61] NFSD: Replace READ* macros in nfsd4_decode_readdir() Chuck Lever
2020-11-13 15:04 ` [PATCH v1 25/61] NFSD: Replace READ* macros in nfsd4_decode_remove() Chuck Lever
2020-11-13 15:04 ` [PATCH v1 26/61] NFSD: Replace READ* macros in nfsd4_decode_rename() Chuck Lever
2020-11-13 15:04 ` [PATCH v1 27/61] NFSD: Replace READ* macros in nfsd4_decode_renew() Chuck Lever
2020-11-13 15:04 ` [PATCH v1 28/61] NFSD: Replace READ* macros in nfsd4_decode_secinfo() Chuck Lever
2020-11-13 15:04 ` [PATCH v1 29/61] NFSD: Replace READ* macros in nfsd4_decode_setclientid() Chuck Lever
2020-11-13 15:05 ` [PATCH v1 30/61] NFSD: Replace READ* macros in nfsd4_decode_setclientid_confirm() Chuck Lever
2020-11-13 15:05 ` [PATCH v1 31/61] NFSD: Replace READ* macros in nfsd4_decode_verify() Chuck Lever
2020-11-13 15:05 ` [PATCH v1 32/61] NFSD: Replace READ* macros in nfsd4_decode_write() Chuck Lever
2020-11-13 15:05 ` [PATCH v1 33/61] NFSD: Replace READ* macros in nfsd4_decode_release_lockowner() Chuck Lever
2020-11-13 15:05 ` [PATCH v1 34/61] NFSD: Replace READ* macros in nfsd4_decode_cb_sec() Chuck Lever
2020-11-13 15:05 ` [PATCH v1 35/61] NFSD: Replace READ* macros in nfsd4_decode_backchannel_ctl() Chuck Lever
2020-11-13 15:05 ` [PATCH v1 36/61] NFSD: Replace READ* macros in nfsd4_decode_bind_conn_to_session() Chuck Lever
2020-11-13 15:05 ` [PATCH v1 37/61] NFSD: Add a separate decoder to handle state_protect_ops Chuck Lever
2020-11-13 15:05 ` [PATCH v1 38/61] NFSD: Add a separate decoder for ssv_sp_parms Chuck Lever
2020-11-13 15:05 ` [PATCH v1 39/61] NFSD: Add a helper to decode state_protect4_a Chuck Lever
2020-11-13 15:05 ` [PATCH v1 40/61] NFSD: Replace READ* macros in nfsd4_decode_exchange_id() Chuck Lever
2020-11-13 15:05 ` [PATCH v1 41/61] NFSD: Replace READ* macros in nfsd4_decode_create_session() Chuck Lever
2020-11-13 15:06 ` [PATCH v1 42/61] NFSD: Replace READ* macros in nfsd4_decode_destroy_session() Chuck Lever
2020-11-13 15:06 ` [PATCH v1 43/61] NFSD: Replace READ* macros in nfsd4_decode_free_stateid() Chuck Lever
2020-11-13 15:06 ` [PATCH v1 44/61] NFSD: Replace READ* macros in nfsd4_decode_getdeviceinfo() Chuck Lever
2020-11-13 15:06 ` [PATCH v1 45/61] NFSD: Replace READ* macros in nfsd4_decode_layoutcommit() Chuck Lever
2020-11-13 15:06 ` [PATCH v1 46/61] NFSD: Replace READ* macros in nfsd4_decode_layoutget() Chuck Lever
2020-11-13 15:06 ` [PATCH v1 47/61] NFSD: Replace READ* macros in nfsd4_decode_layoutreturn() Chuck Lever
2020-11-13 15:06 ` [PATCH v1 48/61] NFSD: Replace READ* macros in nfsd4_decode_secinfo_no_name() Chuck Lever
2020-11-13 15:06 ` [PATCH v1 49/61] NFSD: Replace READ* macros in nfsd4_decode_sequence() Chuck Lever
2020-11-13 15:06 ` [PATCH v1 50/61] NFSD: Replace READ* macros in nfsd4_decode_test_stateid() Chuck Lever
2020-11-13 15:06 ` [PATCH v1 51/61] NFSD: Replace READ* macros in nfsd4_decode_destroy_clientid() Chuck Lever
2020-11-13 15:06 ` [PATCH v1 52/61] NFSD: Replace READ* macros in nfsd4_decode_reclaim_complete() Chuck Lever
2020-11-13 15:07 ` [PATCH v1 53/61] NFSD: Replace READ* macros in nfsd4_decode_fallocate() Chuck Lever
2020-11-13 15:07 ` [PATCH v1 54/61] NFSD: Replace READ* macros in nfsd4_decode_clone() Chuck Lever
2020-11-13 15:07 ` [PATCH v1 55/61] NFSD: Replace READ* macros in nfsd4_decode_copy() Chuck Lever
2020-11-13 15:07 ` [PATCH v1 56/61] NFSD: Replace READ* macros in nfsd4_decode_seek() Chuck Lever
2020-11-13 15:07 ` [PATCH v1 57/61] NFSD: Replace READ* macros in nfsd4_decode_xattr_name() Chuck Lever
2020-11-13 15:07 ` [PATCH v1 58/61] NFSD: Replace READ* macros in nfsd4_decode_setxattr() Chuck Lever
2020-11-13 15:07 ` [PATCH v1 59/61] NFSD: Replace READ* macros in nfsd4_decode_listxattrs() Chuck Lever
2020-11-13 15:07 ` [PATCH v1 60/61] NFSD: Replace READ* macros in nfsd4_decode_compound() Chuck Lever
2020-11-13 15:07 ` [PATCH v1 61/61] NFSD: Remove macros that are no longer used Chuck Lever

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