/* SPDX-License-Identifier: LGPL-2.1+ */
/*
* Copyright (c) International Business Machines Corp., 2007
* Author(s): Steve French ([email protected])
* Modified by Namjae Jeon ([email protected])
*/
#ifndef _COMMON_SMBACL_H
#define _COMMON_SMBACL_H
#define NUM_AUTHS (6) /* number of authority fields */
#define SID_MAX_SUB_AUTHORITIES (15) /* max number of sub authority fields */
/* ACE types - see MS-DTYP 2.4.4.1 */
#define ACCESS_ALLOWED_ACE_TYPE 0x00
#define ACCESS_DENIED_ACE_TYPE 0x01
#define SYSTEM_AUDIT_ACE_TYPE 0x02
#define SYSTEM_ALARM_ACE_TYPE 0x03
#define ACCESS_ALLOWED_COMPOUND_ACE_TYPE 0x04
#define ACCESS_ALLOWED_OBJECT_ACE_TYPE 0x05
#define ACCESS_DENIED_OBJECT_ACE_TYPE 0x06
#define SYSTEM_AUDIT_OBJECT_ACE_TYPE 0x07
#define SYSTEM_ALARM_OBJECT_ACE_TYPE 0x08
#define ACCESS_ALLOWED_CALLBACK_ACE_TYPE 0x09
#define ACCESS_DENIED_CALLBACK_ACE_TYPE 0x0A
#define ACCESS_ALLOWED_CALLBACK_OBJECT_ACE_TYPE 0x0B
#define ACCESS_DENIED_CALLBACK_OBJECT_ACE_TYPE 0x0C
#define SYSTEM_AUDIT_CALLBACK_ACE_TYPE 0x0D
#define SYSTEM_ALARM_CALLBACK_ACE_TYPE 0x0E /* Reserved */
#define SYSTEM_AUDIT_CALLBACK_OBJECT_ACE_TYPE 0x0F
#define SYSTEM_ALARM_CALLBACK_OBJECT_ACE_TYPE 0x10 /* reserved */
#define SYSTEM_MANDATORY_LABEL_ACE_TYPE 0x11
#define SYSTEM_RESOURCE_ATTRIBUTE_ACE_TYPE 0x12
#define SYSTEM_SCOPED_POLICY_ID_ACE_TYPE 0x13
/* ACE flags */
#define OBJECT_INHERIT_ACE 0x01
#define CONTAINER_INHERIT_ACE 0x02
#define NO_PROPAGATE_INHERIT_ACE 0x04
#define INHERIT_ONLY_ACE 0x08
#define INHERITED_ACE 0x10
#define SUCCESSFUL_ACCESS_ACE_FLAG 0x40
#define FAILED_ACCESS_ACE_FLAG 0x80
/*
* Maximum size of a string representation of a SID:
*
* The fields are unsigned values in decimal. So:
*
* u8: max 3 bytes in decimal
* u32: max 10 bytes in decimal
*
* "S-" + 3 bytes for version field + 15 for authority field + NULL terminator
*
* For authority field, max is when all 6 values are non-zero and it must be
* represented in hex. So "-0x" + 12 hex digits.
*
* Add 11 bytes for each subauthority field (10 bytes each + 1 for '-')
*/
#define SID_STRING_BASE_SIZE (2 + 3 + 15 + 1)
#define SID_STRING_SUBAUTH_SIZE (11) /* size of a single subauth string */
#define DOMAIN_USER_RID_LE cpu_to_le32(513)
/*
* ACE types - see MS-DTYP 2.4.4.1
*/
enum {
ACCESS_ALLOWED,
ACCESS_DENIED,
};
/*
* Security ID types
*/
enum {
SIDOWNER = 1,
SIDGROUP,
SIDCREATOR_OWNER,
SIDCREATOR_GROUP,
SIDUNIX_USER,
SIDUNIX_GROUP,
SIDNFS_USER,
SIDNFS_GROUP,
SIDNFS_MODE,
};
struct smb_ntsd {
__le16 revision; /* revision level */
__le16 type;
__le32 osidoffset;
__le32 gsidoffset;
__le32 sacloffset;
__le32 dacloffset;
} __attribute__((packed));
struct smb_sid {
__u8 revision; /* revision level */
__u8 num_subauth;
__u8 authority[NUM_AUTHS];
__le32 sub_auth[SID_MAX_SUB_AUTHORITIES]; /* sub_auth[num_subauth] */
} __attribute__((packed));
/* size of a struct smb_sid, sans sub_auth array */
#define CIFS_SID_BASE_SIZE (1 + 1 + NUM_AUTHS)
struct smb_acl {
__le16 revision; /* revision level */
__le16 size;
__le32 num_aces;
} __attribute__((packed));
struct smb_ace {
__u8 type; /* see above and MS-DTYP 2.4.4.1 */
__u8 flags;
__le16 size;
__le32 access_req;
struct smb_sid sid; /* ie UUID of user or group who gets these perms */
} __attribute__((packed));
#endif /* _COMMON_SMBACL_H */
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