diff mbox series

[09/12] ceph: allow idmapped setattr inode op

Message ID 20220104140414.155198-10-brauner@kernel.org (mailing list archive)
State New, archived
Headers show
Series ceph: support idmapped mounts | expand

Commit Message

Christian Brauner Jan. 4, 2022, 2:04 p.m. UTC 
From: Christian Brauner <christian.brauner@ubuntu.com>

Enable __ceph_setattr() to handle idmapped mounts. This is just a matter
of passing down the mount's idmapping.

Cc: Jeff Layton <jlayton@kernel.org>
Cc: Ilya Dryomov <idryomov@gmail.com>
Cc: ceph-devel@vger.kernel.org
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
---
 fs/ceph/inode.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index d5cecc3519fa..658b620efd50 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -2032,6 +2032,13 @@  int __ceph_setattr(struct inode *inode, struct iattr *attr)
 
 	dout("setattr %p issued %s\n", inode, ceph_cap_string(issued));
 
+	/*
+	 * The attr->ia_{g,u}id members contain the target {g,u}id we're
+	 * sending over the wire. The mount idmapping only matters when we
+	 * create new filesystem objects based on the caller's mapped
+	 * fs{g,u}id.
+	 */
+	req->mnt_userns = &init_user_ns;
 	if (ia_valid & ATTR_UID) {
 		dout("setattr %p uid %d -> %d\n", inode,
 		     from_kuid(&init_user_ns, inode->i_uid),
@@ -2222,7 +2229,7 @@  int ceph_setattr(struct user_namespace *mnt_userns, struct dentry *dentry,
 	if (ceph_inode_is_shutdown(inode))
 		return -ESTALE;
 
-	err = setattr_prepare(&init_user_ns, dentry, attr);
+	err = setattr_prepare(mnt_userns, dentry, attr);
 	if (err != 0)
 		return err;
 
@@ -2237,7 +2244,7 @@  int ceph_setattr(struct user_namespace *mnt_userns, struct dentry *dentry,
 	err = __ceph_setattr(inode, attr);
 
 	if (err >= 0 && (attr->ia_valid & ATTR_MODE))
-		err = posix_acl_chmod(&init_user_ns, inode, attr->ia_mode);
+		err = posix_acl_chmod(mnt_userns, inode, attr->ia_mode);
 
 	return err;
 }