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ceph: allow idmapped atomic_open inode op

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

[ aleksandr.mikhalitsyn: adapted to 5fadbd9929 ("ceph: rely on vfs for
  setgid stripping") ]

Signed-off-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com>
Reviewed-by: Xiubo Li <xiubli@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Christian Brauner 2023-08-07 15:26:25 +02:00 committed by Ilya Dryomov
parent 2cce72dda2
commit 8a051b40ab
1 changed files with 9 additions and 2 deletions
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11
fs/ceph/file.c
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@ -668,7 +668,9 @@ static int ceph_finish_async_create(struct inode *dir, struct inode *inode,
in.truncate_seq = cpu_to_le32(1);
in.truncate_size = cpu_to_le64(-1ULL);
in.xattr_version = cpu_to_le64(1);
in.uid = cpu_to_le32(from_kuid(&init_user_ns, current_fsuid()));
in.uid = cpu_to_le32(from_kuid(&init_user_ns,
mapped_fsuid(req->r_mnt_idmap,
&init_user_ns)));
if (dir->i_mode & S_ISGID) {
in.gid = cpu_to_le32(from_kgid(&init_user_ns, dir->i_gid));
@ -676,7 +678,9 @@ static int ceph_finish_async_create(struct inode *dir, struct inode *inode,
if (S_ISDIR(mode))
mode |= S_ISGID;
} else {
in.gid = cpu_to_le32(from_kgid(&init_user_ns, current_fsgid()));
in.gid = cpu_to_le32(from_kgid(&init_user_ns,
mapped_fsgid(req->r_mnt_idmap,
&init_user_ns)));
}
in.mode = cpu_to_le32((u32)mode);
@ -743,6 +747,7 @@ static int ceph_finish_async_create(struct inode *dir, struct inode *inode,
int ceph_atomic_open(struct inode *dir, struct dentry *dentry,
struct file *file, unsigned flags, umode_t mode)
{
struct mnt_idmap *idmap = file_mnt_idmap(file);
struct ceph_fs_client *fsc = ceph_sb_to_fs_client(dir->i_sb);
struct ceph_client *cl = fsc->client;
struct ceph_mds_client *mdsc = fsc->mdsc;
@ -802,6 +807,8 @@ retry:
mask |= CEPH_CAP_XATTR_SHARED;
req->r_args.open.mask = cpu_to_le32(mask);
req->r_parent = dir;
if (req->r_op == CEPH_MDS_OP_CREATE)
req->r_mnt_idmap = mnt_idmap_get(idmap);
ihold(dir);
if (IS_ENCRYPTED(dir)) {
set_bit(CEPH_MDS_R_FSCRYPT_FILE, &req->r_req_flags);