From: Andreas Gruenbacher <[email protected]>
The dacl attribute includes Automatic Inheritance flags not supported by the
acl attribute. it is only supported in NFS version 4.1 and higher. On systems
where NFS version 4.0 is still the default, an additional mount option is
needed:
mount -t nfs4 -o minorversion=1 [...]
Signed-off-by: Andreas Gruenbacher <[email protected]>
---
fs/nfs/nfs4proc.c | 2 +-
fs/nfs/nfs4xdr.c | 55 ++++++++++++++++++++++++++++++++++++++++++-------
include/linux/nfs_xdr.h | 2 +-
3 files changed, 50 insertions(+), 9 deletions(-)
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 5ba49c3..39f5548 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -4469,7 +4469,7 @@ static struct richacl *__nfs4_get_acl_uncached(struct
inode *inode)
struct nfs_server *server = NFS_SERVER(inode);
struct page *pages[DIV_ROUND_UP(NFS4ACL_SIZE_MAX, PAGE_SIZE)] = {};
struct nfs_getaclargs args = {
- .fh = NFS_FH(inode),
+ .inode = inode,
.acl_pages = pages,
.acl_len = ARRAY_SIZE(pages) * PAGE_SIZE,
};
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 85270df..06f5759 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -1649,9 +1649,16 @@ encode_setacl(struct xdr_stream *xdr, struct
nfs_setaclargs *arg, struct compoun
encode_nfs4_stateid(xdr, &zero_stateid);
/* Encode attribute bitmap. */
- p = reserve_space(xdr, 2*4);
- *p++ = cpu_to_be32(1);
- *p = cpu_to_be32(FATTR4_WORD0_ACL);
+ if (arg->server->attr_bitmask[1] & FATTR4_WORD1_DACL) {
+ p = reserve_space(xdr, 3*4);
+ *p++ = cpu_to_be32(2);
+ *p++ = 0;
+ *p = cpu_to_be32(FATTR4_WORD1_DACL);
+ } else {
+ p = reserve_space(xdr, 2*4);
+ *p++ = cpu_to_be32(1);
+ *p = cpu_to_be32(FATTR4_WORD0_ACL);
+ }
attrlen_offset = xdr->buf->len;
xdr_reserve_space(xdr, 4); /* to be backfilled later */
@@ -2486,9 +2493,12 @@ static void nfs4_xdr_enc_getacl(struct rpc_rqst *req,
struct xdr_stream *xdr,
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
- encode_putfh(xdr, args->fh, &hdr);
+ encode_putfh(xdr, NFS_FH(args->inode), &hdr);
replen = hdr.replen + op_decode_hdr_maxsz + 1;
- encode_getattr_two(xdr, FATTR4_WORD0_ACL, FATTR4_WORD1_MODE, &hdr);
+ if (NFS_SERVER(args->inode)->attr_bitmask[1] & FATTR4_WORD1_DACL)
+ encode_getattr_two(xdr, 0, FATTR4_WORD1_MODE |
FATTR4_WORD1_DACL, &hdr);
+ else
+ encode_getattr_two(xdr, FATTR4_WORD0_ACL, FATTR4_WORD1_MODE,
&hdr);
xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
args->acl_pages, 0, args->acl_len);
@@ -5376,14 +5386,28 @@ static int decode_getacl(struct xdr_stream *xdr, struct
rpc_rqst *req,
if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
return -EIO;
- if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
+
+ if (bitmap[0] & FATTR4_WORD0_ACL) {
+ struct richace *ace;
+
+ if (bitmap[1] & FATTR4_WORD1_DACL)
+ return -EIO;
+
acl = decode_acl_entries(xdr, res->server);
status = PTR_ERR(acl);
if (IS_ERR(acl))
goto out;
+
+ status = -EIO;
+ richacl_for_each_entry(ace, acl) {
+ if (ace->e_flags & RICHACE_INHERITED_ACE)
+ goto out;
+ }
bitmap[0] &= ~FATTR4_WORD0_ACL;
- } else
+ } else if (!(bitmap[1] & FATTR4_WORD1_DACL)) {
status = -EOPNOTSUPP;
+ goto out;
+ }
status = -EIO;
if (unlikely(bitmap[0]))
@@ -5391,6 +5415,23 @@ static int decode_getacl(struct xdr_stream *xdr, struct
rpc_rqst *req,
if ((status = decode_attr_mode(xdr, bitmap, &res->mode)) < 0)
goto out;
+ if (bitmap[1] & FATTR4_WORD1_DACL) {
+ unsigned int flags;
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, 4);
+ status = -EIO;
+ if (unlikely(!p))
+ goto out;
+ flags = be32_to_cpup(p);
+
+ acl = decode_acl_entries(xdr, res->server);
+ status = PTR_ERR(acl);
+ if (IS_ERR(acl))
+ goto out;
+ acl->a_flags = flags;
+ bitmap[1] &= ~FATTR4_WORD1_DACL;
+ }
status = 0;
out:
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index f1c8f93..abe0b66 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -695,7 +695,7 @@ struct nfs_setaclres {
struct nfs_getaclargs {
struct nfs4_sequence_args seq_args;
- struct nfs_fh * fh;
+ struct inode * inode;
size_t acl_len;
struct page ** acl_pages;
};
--
2.4.3
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