fs/9p: Add xattr callbacks for POSIX ACL
This patch implement fetching POSIX ACL from the server
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
diff --git a/fs/9p/acl.c b/fs/9p/acl.c
index a8c0136..4293b45 100644
--- a/fs/9p/acl.c
+++ b/fs/9p/acl.c
@@ -94,3 +94,44 @@
}
return -EAGAIN;
}
+
+static int v9fs_xattr_get_acl(struct dentry *dentry, const char *name,
+ void *buffer, size_t size, int type)
+{
+ struct posix_acl *acl;
+ int error;
+
+ if (strcmp(name, "") != 0)
+ return -EINVAL;
+
+ acl = v9fs_get_cached_acl(dentry->d_inode, type);
+ if (IS_ERR(acl))
+ return PTR_ERR(acl);
+ if (acl == NULL)
+ return -ENODATA;
+ error = posix_acl_to_xattr(acl, buffer, size);
+ posix_acl_release(acl);
+
+ return error;
+}
+
+static int v9fs_xattr_set_acl(struct dentry *dentry, const char *name,
+ const void *value, size_t size,
+ int flags, int type)
+{
+ return 0;
+}
+
+const struct xattr_handler v9fs_xattr_acl_access_handler = {
+ .prefix = POSIX_ACL_XATTR_ACCESS,
+ .flags = ACL_TYPE_ACCESS,
+ .get = v9fs_xattr_get_acl,
+ .set = v9fs_xattr_set_acl,
+};
+
+const struct xattr_handler v9fs_xattr_acl_default_handler = {
+ .prefix = POSIX_ACL_XATTR_DEFAULT,
+ .flags = ACL_TYPE_DEFAULT,
+ .get = v9fs_xattr_get_acl,
+ .set = v9fs_xattr_set_acl,
+};