diff options
| author | Steve French <stfrench@microsoft.com> | 2018-06-24 23:18:52 -0500 |
|---|---|---|
| committer | Steve French <stfrench@microsoft.com> | 2018-08-07 14:15:41 -0500 |
| commit | 21ba3845b59c733a79ed4fe1c4f3732e7ece9df7 (patch) | |
| tree | 056f8500bf9e7eabdb4d233a11bc78d5fa16860e /fs/cifs/cifsfs.c | |
| parent | a12d0c590cc7ae01892f06c5ad6d19580ecdd0de (diff) | |
| download | linux-21ba3845b59c733a79ed4fe1c4f3732e7ece9df7.tar.gz | |
smb3: fill in statfs fsid and correct namelen
Fil in the correct namelen (typically 255 not 4096) in the
statfs response and also fill in a reasonably unique fsid
(in this case taken from the volume id, and the creation time
of the volume).
In the case of the POSIX statfs all fields are now filled in,
and in the case of non-POSIX mounts, all fields are filled
in which can be.
Signed-off-by: Steve French <stfrench@gmail.com>
CC: Stable <stable@vger.kernel.org>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Diffstat (limited to 'fs/cifs/cifsfs.c')
| -rw-r--r-- | fs/cifs/cifsfs.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index d5aa7ae917bf1..69ec5427769cd 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -209,14 +209,16 @@ cifs_statfs(struct dentry *dentry, struct kstatfs *buf) xid = get_xid(); - /* - * PATH_MAX may be too long - it would presumably be total path, - * but note that some servers (includinng Samba 3) have a shorter - * maximum path. - * - * Instead could get the real value via SMB_QUERY_FS_ATTRIBUTE_INFO. - */ - buf->f_namelen = PATH_MAX; + if (le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength) > 0) + buf->f_namelen = + le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength); + else + buf->f_namelen = PATH_MAX; + + buf->f_fsid.val[0] = tcon->vol_serial_number; + /* are using part of create time for more randomness, see man statfs */ + buf->f_fsid.val[1] = (int)le64_to_cpu(tcon->vol_create_time); + buf->f_files = 0; /* undefined */ buf->f_ffree = 0; /* unlimited */ |