From 412094a8fb0711e9f332bed6723aa59706a4ff7e Mon Sep 17 00:00:00 2001 From: Steve French Date: Mon, 24 Jun 2019 02:01:42 -0500 Subject: smb3: add new mount option to retrieve mode from special ACE There is a special ACE used by some servers to allow the mode bits to be stored. This can be especially helpful in scenarios in which the client is trusted, and access checking on the client vs the POSIX mode bits is sufficient. Add mount option to allow enabling this behavior. Follow on patch will add support for chmod and queryinfo (stat) by retrieving the POSIX mode bits from the special ACE, SID: S-1-5-88-3 See e.g. https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2008-R2-and-2008/hh509017(v=ws.10) Signed-off-by: Steve French Reviewed-by: Ronnie Sahlberg --- fs/cifs/cifsglob.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'fs/cifs/cifsglob.h') diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index 16f240911192..a4af850cd20a 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -550,6 +550,7 @@ struct smb_vol { bool override_gid:1; bool dynperm:1; bool noperm:1; + bool mode_ace:1; bool no_psx_acl:1; /* set if posix acl support should be disabled */ bool cifs_acl:1; bool backupuid_specified; /* mount option backupuid is specified */ @@ -618,7 +619,7 @@ struct smb_vol { CIFS_MOUNT_MULTIUSER | CIFS_MOUNT_STRICT_IO | \ CIFS_MOUNT_CIFS_BACKUPUID | CIFS_MOUNT_CIFS_BACKUPGID | \ CIFS_MOUNT_UID_FROM_ACL | CIFS_MOUNT_NO_HANDLE_CACHE | \ - CIFS_MOUNT_NO_DFS) + CIFS_MOUNT_NO_DFS | CIFS_MOUNT_MODE_FROM_SID) /** * Generic VFS superblock mount flags (s_flags) to consider when -- cgit v1.2.3