#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/nfs_idmap.h>
+#include <linux/nfs_fs.h>
+
+/**
+ * nfs_fattr_init_names - initialise the nfs_fattr owner_name/group_name fields
+ * @fattr: fully initialised struct nfs_fattr
+ * @owner_name: owner name string cache
+ * @group_name: group name string cache
+ */
+void nfs_fattr_init_names(struct nfs_fattr *fattr,
+ struct nfs4_string *owner_name,
+ struct nfs4_string *group_name)
+{
+ fattr->owner_name = owner_name;
+ fattr->group_name = group_name;
+}
+
+static void nfs_fattr_free_owner_name(struct nfs_fattr *fattr)
+{
+ fattr->valid &= ~NFS_ATTR_FATTR_OWNER_NAME;
+ kfree(fattr->owner_name->data);
+}
+
+static void nfs_fattr_free_group_name(struct nfs_fattr *fattr)
+{
+ fattr->valid &= ~NFS_ATTR_FATTR_GROUP_NAME;
+ kfree(fattr->group_name->data);
+}
+
+static bool nfs_fattr_map_owner_name(struct nfs_server *server, struct nfs_fattr *fattr)
+{
+ struct nfs4_string *owner = fattr->owner_name;
+ __u32 uid;
+
+ if (!(fattr->valid & NFS_ATTR_FATTR_OWNER_NAME))
+ return false;
+ if (nfs_map_name_to_uid(server, owner->data, owner->len, &uid) == 0) {
+ fattr->uid = uid;
+ fattr->valid |= NFS_ATTR_FATTR_OWNER;
+ }
+ return true;
+}
+
+static bool nfs_fattr_map_group_name(struct nfs_server *server, struct nfs_fattr *fattr)
+{
+ struct nfs4_string *group = fattr->group_name;
+ __u32 gid;
+
+ if (!(fattr->valid & NFS_ATTR_FATTR_GROUP_NAME))
+ return false;
+ if (nfs_map_group_to_gid(server, group->data, group->len, &gid) == 0) {
+ fattr->gid = gid;
+ fattr->valid |= NFS_ATTR_FATTR_GROUP;
+ }
+ return true;
+}
+
+/**
+ * nfs_fattr_free_names - free up the NFSv4 owner and group strings
+ * @fattr: a fully initialised nfs_fattr structure
+ */
+void nfs_fattr_free_names(struct nfs_fattr *fattr)
+{
+ if (fattr->valid & NFS_ATTR_FATTR_OWNER_NAME)
+ nfs_fattr_free_owner_name(fattr);
+ if (fattr->valid & NFS_ATTR_FATTR_GROUP_NAME)
+ nfs_fattr_free_group_name(fattr);
+}
+
+/**
+ * nfs_fattr_map_and_free_names - map owner/group strings into uid/gid and free
+ * @server: pointer to the filesystem nfs_server structure
+ * @fattr: a fully initialised nfs_fattr structure
+ *
+ * This helper maps the cached NFSv4 owner/group strings in fattr into
+ * their numeric uid/gid equivalents, and then frees the cached strings.
+ */
+void nfs_fattr_map_and_free_names(struct nfs_server *server, struct nfs_fattr *fattr)
+{
+ if (nfs_fattr_map_owner_name(server, fattr))
+ nfs_fattr_free_owner_name(fattr);
+ if (nfs_fattr_map_group_name(server, fattr))
+ nfs_fattr_free_group_name(fattr);
+}
static int nfs_map_string_to_numeric(const char *name, size_t namelen, __u32 *res)
{
encode_getfh(xdr, &hdr);
encode_getfattr(xdr, args->bitmask, &hdr);
encode_restorefh(xdr, &hdr);
- encode_getfattr(xdr, args->bitmask, &hdr);
+ encode_getfattr(xdr, args->dir_bitmask, &hdr);
encode_nops(&hdr);
}
}
static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
- const struct nfs_server *server, uint32_t *uid, int may_sleep)
+ const struct nfs_server *server, uint32_t *uid,
+ struct nfs4_string *owner_name)
{
uint32_t len;
__be32 *p;
p = xdr_inline_decode(xdr, len);
if (unlikely(!p))
goto out_overflow;
- if (!may_sleep) {
- /* do nothing */
+ if (owner_name != NULL) {
+ owner_name->data = kmemdup(p, len, GFP_NOWAIT);
+ if (owner_name->data != NULL) {
+ owner_name->len = len;
+ ret = NFS_ATTR_FATTR_OWNER_NAME;
+ }
} else if (len < XDR_MAX_NETOBJ) {
if (nfs_map_name_to_uid(server, (char *)p, len, uid) == 0)
ret = NFS_ATTR_FATTR_OWNER;
}
static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
- const struct nfs_server *server, uint32_t *gid, int may_sleep)
+ const struct nfs_server *server, uint32_t *gid,
+ struct nfs4_string *group_name)
{
uint32_t len;
__be32 *p;
p = xdr_inline_decode(xdr, len);
if (unlikely(!p))
goto out_overflow;
- if (!may_sleep) {
- /* do nothing */
+ if (group_name != NULL) {
+ group_name->data = kmemdup(p, len, GFP_NOWAIT);
+ if (group_name->data != NULL) {
+ group_name->len = len;
+ ret = NFS_ATTR_FATTR_GROUP_NAME;
+ }
} else if (len < XDR_MAX_NETOBJ) {
if (nfs_map_group_to_gid(server, (char *)p, len, gid) == 0)
ret = NFS_ATTR_FATTR_GROUP;
static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
struct nfs_fattr *fattr, struct nfs_fh *fh,
- const struct nfs_server *server, int may_sleep)
+ const struct nfs_server *server)
{
int status;
umode_t fmode = 0;
goto xdr_error;
fattr->valid |= status;
- status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, may_sleep);
+ status = decode_attr_owner(xdr, bitmap, server, &fattr->uid, fattr->owner_name);
if (status < 0)
goto xdr_error;
fattr->valid |= status;
- status = decode_attr_group(xdr, bitmap, server, &fattr->gid, may_sleep);
+ status = decode_attr_group(xdr, bitmap, server, &fattr->gid, fattr->group_name);
if (status < 0)
goto xdr_error;
fattr->valid |= status;
}
static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
- struct nfs_fh *fh, const struct nfs_server *server, int may_sleep)
+ struct nfs_fh *fh, const struct nfs_server *server)
{
__be32 *savep;
uint32_t attrlen,
if (status < 0)
goto xdr_error;
- status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, server, may_sleep);
+ status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, server);
if (status < 0)
goto xdr_error;
}
static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
- const struct nfs_server *server, int may_sleep)
+ const struct nfs_server *server)
{
- return decode_getfattr_generic(xdr, fattr, NULL, server, may_sleep);
+ return decode_getfattr_generic(xdr, fattr, NULL, server);
}
/*
status = decode_open_downgrade(xdr, res);
if (status != 0)
goto out;
- decode_getfattr(xdr, res->fattr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task));
+ decode_getfattr(xdr, res->fattr, res->server);
out:
return status;
}
status = decode_access(xdr, res);
if (status != 0)
goto out;
- decode_getfattr(xdr, res->fattr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task));
+ decode_getfattr(xdr, res->fattr, res->server);
out:
return status;
}
status = decode_getfh(xdr, res->fh);
if (status)
goto out;
- status = decode_getfattr(xdr, res->fattr, res->server
- ,!RPC_IS_ASYNC(rqstp->rq_task));
+ status = decode_getfattr(xdr, res->fattr, res->server);
out:
return status;
}
goto out;
status = decode_getfh(xdr, res->fh);
if (status == 0)
- status = decode_getfattr(xdr, res->fattr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task));
+ status = decode_getfattr(xdr, res->fattr, res->server);
out:
return status;
}
status = decode_remove(xdr, &res->cinfo);
if (status)
goto out;
- decode_getfattr(xdr, res->dir_attr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task));
+ decode_getfattr(xdr, res->dir_attr, res->server);
out:
return status;
}
if (status)
goto out;
/* Current FH is target directory */
- if (decode_getfattr(xdr, res->new_fattr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
+ if (decode_getfattr(xdr, res->new_fattr, res->server))
goto out;
status = decode_restorefh(xdr);
if (status)
goto out;
- decode_getfattr(xdr, res->old_fattr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task));
+ decode_getfattr(xdr, res->old_fattr, res->server);
out:
return status;
}
* Note order: OP_LINK leaves the directory as the current
* filehandle.
*/
- if (decode_getfattr(xdr, res->dir_attr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
+ if (decode_getfattr(xdr, res->dir_attr, res->server))
goto out;
status = decode_restorefh(xdr);
if (status)
goto out;
- decode_getfattr(xdr, res->fattr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task));
+ decode_getfattr(xdr, res->fattr, res->server);
out:
return status;
}
status = decode_getfh(xdr, res->fh);
if (status)
goto out;
- if (decode_getfattr(xdr, res->fattr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
+ if (decode_getfattr(xdr, res->fattr, res->server))
goto out;
status = decode_restorefh(xdr);
if (status)
goto out;
- decode_getfattr(xdr, res->dir_fattr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task));
+ decode_getfattr(xdr, res->dir_fattr, res->server);
out:
return status;
}
status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_getfattr(xdr, res->fattr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task));
+ status = decode_getfattr(xdr, res->fattr, res->server);
out:
return status;
}
* an ESTALE error. Shouldn't be a problem,
* though, since fattr->valid will remain unset.
*/
- decode_getfattr(xdr, res->fattr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task));
+ decode_getfattr(xdr, res->fattr, res->server);
out:
return status;
}
goto out;
if (decode_getfh(xdr, &res->fh) != 0)
goto out;
- if (decode_getfattr(xdr, res->f_attr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
+ if (decode_getfattr(xdr, res->f_attr, res->server) != 0)
goto out;
if (decode_restorefh(xdr) != 0)
goto out;
- decode_getfattr(xdr, res->dir_attr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task));
+ decode_getfattr(xdr, res->dir_attr, res->server);
out:
return status;
}
status = decode_open(xdr, res);
if (status)
goto out;
- decode_getfattr(xdr, res->f_attr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task));
+ decode_getfattr(xdr, res->f_attr, res->server);
out:
return status;
}
status = decode_setattr(xdr);
if (status)
goto out;
- decode_getfattr(xdr, res->fattr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task));
+ decode_getfattr(xdr, res->fattr, res->server);
out:
return status;
}
if (status)
goto out;
if (res->fattr)
- decode_getfattr(xdr, res->fattr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task));
+ decode_getfattr(xdr, res->fattr, res->server);
if (!status)
status = res->count;
out:
if (status)
goto out;
if (res->fattr)
- decode_getfattr(xdr, res->fattr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task));
+ decode_getfattr(xdr, res->fattr, res->server);
out:
return status;
}
status = decode_delegreturn(xdr);
if (status != 0)
goto out;
- decode_getfattr(xdr, res->fattr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task));
+ decode_getfattr(xdr, res->fattr, res->server);
out:
return status;
}
goto out;
xdr_enter_page(xdr, PAGE_SIZE);
status = decode_getfattr(xdr, &res->fs_locations->fattr,
- res->fs_locations->server,
- !RPC_IS_ASYNC(req->rq_task));
+ res->fs_locations->server);
out:
return status;
}
status = decode_layoutcommit(xdr, rqstp, res);
if (status)
goto out;
- decode_getfattr(xdr, res->fattr, res->server,
- !RPC_IS_ASYNC(rqstp->rq_task));
+ decode_getfattr(xdr, res->fattr, res->server);
out:
return status;
}
goto out_overflow;
if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
- entry->server, 1) < 0)
+ entry->server) < 0)
goto out_overflow;
if (entry->fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
entry->ino = entry->fattr->mounted_on_fileid;