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| 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/vfs_cache.c | |
| parent | ef24c962d0f29036041a007a75bcd0f50233c83e (diff) | |
| download | linux-af34983e831587472333e47c86a350a2360c6093.tar.bz2 | |
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/vfs_cache.c')
| -rw-r--r-- | fs/ksmbd/vfs_cache.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/ksmbd/vfs_cache.c b/fs/ksmbd/vfs_cache.c index 5c9efcfaeb5c..1941ad3f5aa5 100644 --- a/fs/ksmbd/vfs_cache.c +++ b/fs/ksmbd/vfs_cache.c @@ -251,7 +251,8 @@ static void __ksmbd_inode_close(struct ksmbd_file *fp) filp = fp->filp; if (ksmbd_stream_fd(fp) && (ci->m_flags & S_DEL_ON_CLS_STREAM)) { ci->m_flags &= ~S_DEL_ON_CLS_STREAM; - err = ksmbd_vfs_remove_xattr(filp->f_path.dentry, + err = ksmbd_vfs_remove_xattr(file_mnt_user_ns(filp), + filp->f_path.dentry, fp->stream.name); if (err) pr_err("remove xattr failed : %s\n", @@ -265,7 +266,7 @@ static void __ksmbd_inode_close(struct ksmbd_file *fp) dir = dentry->d_parent; ci->m_flags &= ~(S_DEL_ON_CLS | S_DEL_PENDING); write_unlock(&ci->m_lock); - ksmbd_vfs_unlink(dir, dentry); + ksmbd_vfs_unlink(file_mnt_user_ns(filp), dir, dentry); write_lock(&ci->m_lock); } write_unlock(&ci->m_lock); |