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/* SPDX-License-Identifier: LGPL-2.1 */
/*
*
* Copyright (c) International Business Machines Corp., 2007
* Author(s): Steve French (sfrench@us.ibm.com)
*
*/
#ifndef _CIFSACL_H
#define _CIFSACL_H
#include "../common/smbacl.h"
#define READ_BIT 0x4
#define WRITE_BIT 0x2
#define EXEC_BIT 0x1
#define ACL_OWNER_MASK 0700
#define ACL_GROUP_MASK 0070
#define ACL_EVERYONE_MASK 0007
#define UBITSHIFT 6
#define GBITSHIFT 3
/*
* Security Descriptor length containing DACL with 3 ACEs (one each for
* owner, group and world).
*/
#define DEFAULT_SEC_DESC_LEN (sizeof(struct smb_ntsd) + \
sizeof(struct smb_acl) + \
(sizeof(struct smb_ace) * 4))
/*
* The current SMB3 form of security descriptor is similar to what was used for
* cifs (see above) but some fields are split, and fields in the struct below
* matches names of fields to the spec, MS-DTYP (see sections 2.4.5 and
* 2.4.6). Note that "CamelCase" fields are used in this struct in order to
* match the MS-DTYP and MS-SMB2 specs which define the wire format.
*/
struct smb3_sd {
__u8 Revision; /* revision level, MUST be one */
__u8 Sbz1; /* only meaningful if 'RM' flag set below */
__le16 Control;
__le32 OffsetOwner;
__le32 OffsetGroup;
__le32 OffsetSacl;
__le32 OffsetDacl;
} __packed;
/* Meaning of 'Control' field flags */
#define ACL_CONTROL_SR 0x8000 /* Self relative */
#define ACL_CONTROL_RM 0x4000 /* Resource manager control bits */
#define ACL_CONTROL_PS 0x2000 /* SACL protected from inherits */
#define ACL_CONTROL_PD 0x1000 /* DACL protected from inherits */
#define ACL_CONTROL_SI 0x0800 /* SACL Auto-Inherited */
#define ACL_CONTROL_DI 0x0400 /* DACL Auto-Inherited */
#define ACL_CONTROL_SC 0x0200 /* SACL computed through inheritance */
#define ACL_CONTROL_DC 0x0100 /* DACL computed through inheritence */
#define ACL_CONTROL_SS 0x0080 /* Create server ACL */
#define ACL_CONTROL_DT 0x0040 /* DACL provided by trusted source */
#define ACL_CONTROL_SD 0x0020 /* SACL defaulted */
#define ACL_CONTROL_SP 0x0010 /* SACL is present on object */
#define ACL_CONTROL_DD 0x0008 /* DACL defaulted */
#define ACL_CONTROL_DP 0x0004 /* DACL is present on object */
#define ACL_CONTROL_GD 0x0002 /* Group was defaulted */
#define ACL_CONTROL_OD 0x0001 /* User was defaulted */
/* Meaning of AclRevision flags */
#define ACL_REVISION 0x02 /* See section 2.4.4.1 of MS-DTYP */
#define ACL_REVISION_DS 0x04 /* Additional AceTypes allowed */
struct smb3_acl {
u8 AclRevision; /* revision level */
u8 Sbz1; /* MBZ */
__le16 AclSize;
__le16 AceCount;
__le16 Sbz2; /* MBZ */
} __packed;
/*
* Used to store the special 'NFS SIDs' used to persist the POSIX uid and gid
* See http://technet.microsoft.com/en-us/library/hh509017(v=ws.10).aspx
*/
struct owner_sid {
u8 Revision;
u8 NumAuth;
u8 Authority[6];
__le32 SubAuthorities[3];
} __packed;
struct owner_group_sids {
struct owner_sid owner;
struct owner_sid group;
} __packed;
/*
* Minimum security identifier can be one for system defined Users
* and Groups such as NULL SID and World or Built-in accounts such
* as Administrator and Guest and consists of
* Revision + Num (Sub)Auths + Authority + Domain (one Subauthority)
*/
#define MIN_SID_LEN (1 + 1 + 6 + 4) /* in bytes */
/*
* Minimum security descriptor can be one without any SACL and DACL and can
* consist of revision, type, and two sids of minimum size for owner and group
*/
#define MIN_SEC_DESC_LEN (sizeof(struct smb_ntsd) + (2 * MIN_SID_LEN))
#endif /* _CIFSACL_H */
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