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Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: LGPL-2.1+ */
2/*
3 * Copyright (c) International Business Machines Corp., 2007
4 * Author(s): Steve French (sfrench@us.ibm.com)
5 * Modified by Namjae Jeon (linkinjeon@kernel.org)
6 */
7
8#ifndef _COMMON_SMBACL_H
9#define _COMMON_SMBACL_H
10
11#define NUM_AUTHS (6) /* number of authority fields */
12#define SID_MAX_SUB_AUTHORITIES (15) /* max number of sub authority fields */
13
14/* ACE types - see MS-DTYP 2.4.4.1 */
15#define ACCESS_ALLOWED_ACE_TYPE 0x00
16#define ACCESS_DENIED_ACE_TYPE 0x01
17#define SYSTEM_AUDIT_ACE_TYPE 0x02
18#define SYSTEM_ALARM_ACE_TYPE 0x03
19#define ACCESS_ALLOWED_COMPOUND_ACE_TYPE 0x04
20#define ACCESS_ALLOWED_OBJECT_ACE_TYPE 0x05
21#define ACCESS_DENIED_OBJECT_ACE_TYPE 0x06
22#define SYSTEM_AUDIT_OBJECT_ACE_TYPE 0x07
23#define SYSTEM_ALARM_OBJECT_ACE_TYPE 0x08
24#define ACCESS_ALLOWED_CALLBACK_ACE_TYPE 0x09
25#define ACCESS_DENIED_CALLBACK_ACE_TYPE 0x0A
26#define ACCESS_ALLOWED_CALLBACK_OBJECT_ACE_TYPE 0x0B
27#define ACCESS_DENIED_CALLBACK_OBJECT_ACE_TYPE 0x0C
28#define SYSTEM_AUDIT_CALLBACK_ACE_TYPE 0x0D
29#define SYSTEM_ALARM_CALLBACK_ACE_TYPE 0x0E /* Reserved */
30#define SYSTEM_AUDIT_CALLBACK_OBJECT_ACE_TYPE 0x0F
31#define SYSTEM_ALARM_CALLBACK_OBJECT_ACE_TYPE 0x10 /* reserved */
32#define SYSTEM_MANDATORY_LABEL_ACE_TYPE 0x11
33#define SYSTEM_RESOURCE_ATTRIBUTE_ACE_TYPE 0x12
34#define SYSTEM_SCOPED_POLICY_ID_ACE_TYPE 0x13
35
36/* ACE flags */
37#define OBJECT_INHERIT_ACE 0x01
38#define CONTAINER_INHERIT_ACE 0x02
39#define NO_PROPAGATE_INHERIT_ACE 0x04
40#define INHERIT_ONLY_ACE 0x08
41#define INHERITED_ACE 0x10
42#define SUCCESSFUL_ACCESS_ACE_FLAG 0x40
43#define FAILED_ACCESS_ACE_FLAG 0x80
44
45/*
46 * Maximum size of a string representation of a SID:
47 *
48 * The fields are unsigned values in decimal. So:
49 *
50 * u8: max 3 bytes in decimal
51 * u32: max 10 bytes in decimal
52 *
53 * "S-" + 3 bytes for version field + 15 for authority field + NULL terminator
54 *
55 * For authority field, max is when all 6 values are non-zero and it must be
56 * represented in hex. So "-0x" + 12 hex digits.
57 *
58 * Add 11 bytes for each subauthority field (10 bytes each + 1 for '-')
59 */
60#define SID_STRING_BASE_SIZE (2 + 3 + 15 + 1)
61#define SID_STRING_SUBAUTH_SIZE (11) /* size of a single subauth string */
62
63#define DOMAIN_USER_RID_LE cpu_to_le32(513)
64
65/*
66 * ACE types - see MS-DTYP 2.4.4.1
67 */
68enum {
69 ACCESS_ALLOWED,
70 ACCESS_DENIED,
71};
72
73/*
74 * Security ID types
75 */
76enum {
77 SIDOWNER = 1,
78 SIDGROUP,
79 SIDCREATOR_OWNER,
80 SIDCREATOR_GROUP,
81 SIDUNIX_USER,
82 SIDUNIX_GROUP,
83 SIDNFS_USER,
84 SIDNFS_GROUP,
85 SIDNFS_MODE,
86};
87
88struct smb_ntsd {
89 __le16 revision; /* revision level */
90 __le16 type;
91 __le32 osidoffset;
92 __le32 gsidoffset;
93 __le32 sacloffset;
94 __le32 dacloffset;
95} __packed;
96
97struct smb_sid {
98 __u8 revision; /* revision level */
99 __u8 num_subauth;
100 __u8 authority[NUM_AUTHS];
101 __le32 sub_auth[SID_MAX_SUB_AUTHORITIES]; /* sub_auth[num_subauth] */
102} __packed;
103
104/* size of a struct smb_sid, sans sub_auth array */
105#define CIFS_SID_BASE_SIZE (1 + 1 + NUM_AUTHS)
106
107struct smb_acl {
108 __le16 revision; /* revision level */
109 __le16 size;
110 __le16 num_aces;
111 __le16 reserved;
112} __packed;
113
114struct smb_ace {
115 __u8 type; /* see above and MS-DTYP 2.4.4.1 */
116 __u8 flags;
117 __le16 size;
118 __le32 access_req;
119 struct smb_sid sid; /* ie UUID of user or group who gets these perms */
120} __packed;
121
122#endif /* _COMMON_SMBACL_H */