nfsd: clean up supported attribute handling
Minor cleanup, no change in behavior.
Provide helpers for some common attribute bitmap operations. Drop some
comments that just echo the code.
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index c2d2895..a99bbb8 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -57,6 +57,20 @@
#define NFSDDBG_FACILITY NFSDDBG_XDR
+u32 nfsd_suppattrs[3][3] = {
+ {NFSD4_SUPPORTED_ATTRS_WORD0,
+ NFSD4_SUPPORTED_ATTRS_WORD1,
+ NFSD4_SUPPORTED_ATTRS_WORD2},
+
+ {NFSD4_1_SUPPORTED_ATTRS_WORD0,
+ NFSD4_1_SUPPORTED_ATTRS_WORD1,
+ NFSD4_1_SUPPORTED_ATTRS_WORD2},
+
+ {NFSD4_1_SUPPORTED_ATTRS_WORD0,
+ NFSD4_1_SUPPORTED_ATTRS_WORD1,
+ NFSD4_2_SUPPORTED_ATTRS_WORD2},
+};
+
/*
* As per referral draft, the fsid for a referral MUST be different from the fsid of the containing
* directory in order to indicate to the client that a filesystem boundary is present
@@ -2340,9 +2354,7 @@ nfsd4_encode_fattr(struct xdr_stream *xdr, struct svc_fh *fhp,
struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id);
BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1);
- BUG_ON(bmval0 & ~nfsd_suppattrs0(minorversion));
- BUG_ON(bmval1 & ~nfsd_suppattrs1(minorversion));
- BUG_ON(bmval2 & ~nfsd_suppattrs2(minorversion));
+ BUG_ON(!nfsd_attrs_supported(minorversion, bmval));
if (exp->ex_fslocs.migrated) {
status = fattr_handle_absent_fs(&bmval0, &bmval1, &bmval2, &rdattr_err);
@@ -2409,29 +2421,27 @@ nfsd4_encode_fattr(struct xdr_stream *xdr, struct svc_fh *fhp,
p++; /* to be backfilled later */
if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) {
- u32 word0 = nfsd_suppattrs0(minorversion);
- u32 word1 = nfsd_suppattrs1(minorversion);
- u32 word2 = nfsd_suppattrs2(minorversion);
+ u32 *supp = nfsd_suppattrs[minorversion];
if (!IS_POSIXACL(dentry->d_inode))
- word0 &= ~FATTR4_WORD0_ACL;
+ supp[0] &= ~FATTR4_WORD0_ACL;
if (!contextsupport)
- word2 &= ~FATTR4_WORD2_SECURITY_LABEL;
- if (!word2) {
+ supp[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
+ if (!supp[2]) {
p = xdr_reserve_space(xdr, 12);
if (!p)
goto out_resource;
*p++ = cpu_to_be32(2);
- *p++ = cpu_to_be32(word0);
- *p++ = cpu_to_be32(word1);
+ *p++ = cpu_to_be32(supp[0]);
+ *p++ = cpu_to_be32(supp[1]);
} else {
p = xdr_reserve_space(xdr, 16);
if (!p)
goto out_resource;
*p++ = cpu_to_be32(3);
- *p++ = cpu_to_be32(word0);
- *p++ = cpu_to_be32(word1);
- *p++ = cpu_to_be32(word2);
+ *p++ = cpu_to_be32(supp[0]);
+ *p++ = cpu_to_be32(supp[1]);
+ *p++ = cpu_to_be32(supp[2]);
}
}
if (bmval0 & FATTR4_WORD0_TYPE) {