diff options
| author | Hyunchul Lee <hyc.lee@gmail.com> | 2021-06-30 18:25:53 +0900 |
|---|---|---|
| committer | Namjae Jeon <namjae.jeon@samsung.com> | 2021-07-02 16:27:10 +0900 |
| commit | af34983e831587472333e47c86a350a2360c6093 (patch) | |
| tree | 0db387e95eb0372e4e6ebb6304671603d0c9690a /fs/ksmbd/ndr.c | |
| parent | ef24c962d0f29036041a007a75bcd0f50233c83e (diff) | |
| download | lwn-af34983e831587472333e47c86a350a2360c6093.tar.gz lwn-af34983e831587472333e47c86a350a2360c6093.zip | |
ksmbd: add user namespace support
For user namespace support, call vfs functions
with struct user_namespace got from struct path.
This patch have been tested mannually as below.
Create an id-mapped mount using the mount-idmapped utility
(https://github.com/brauner/mount-idmapped).
$ mount-idmapped --map-mount b:1003:1002:1 /home/foo <EXPORT DIR>/foo
(the user, "foo" is 1003, and the user "bar" is 1002).
And mount the export directory using cifs with the user, "bar".
succeed to create/delete/stat/read/write files and directory in
the <EXPORT DIR>/foo. But fail with a bind mount for /home/foo.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs/ksmbd/ndr.c')
| -rw-r--r-- | fs/ksmbd/ndr.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/fs/ksmbd/ndr.c b/fs/ksmbd/ndr.c index bcf13a2aa9d4..cf0df78259c9 100644 --- a/fs/ksmbd/ndr.c +++ b/fs/ksmbd/ndr.c @@ -222,7 +222,9 @@ static int ndr_encode_posix_acl_entry(struct ndr *n, struct xattr_smb_acl *acl) return 0; } -int ndr_encode_posix_acl(struct ndr *n, struct inode *inode, +int ndr_encode_posix_acl(struct ndr *n, + struct user_namespace *user_ns, + struct inode *inode, struct xattr_smb_acl *acl, struct xattr_smb_acl *def_acl) { @@ -250,8 +252,8 @@ int ndr_encode_posix_acl(struct ndr *n, struct inode *inode, ndr_write_int32(n, 0); } - ndr_write_int64(n, from_kuid(&init_user_ns, inode->i_uid)); - ndr_write_int64(n, from_kgid(&init_user_ns, inode->i_gid)); + ndr_write_int64(n, from_kuid(user_ns, inode->i_uid)); + ndr_write_int64(n, from_kgid(user_ns, inode->i_gid)); ndr_write_int32(n, inode->i_mode); if (acl) { |