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2.4.5 in [MS-DTYP].pdf describe the data type of num_aces as le16. AceCount (2 bytes): An unsigned 16-bit integer that specifies the count of the number of ACE records in the ACL. Change it to le16 and add reserved field to smb_acl struct. Reported-by: Igor Leite Ladessa <igor-ladessa@hotmail.com> Tested-by: Igor Leite Ladessa <igor-ladessa@hotmail.com> Signed-off-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
122 lines
3.3 KiB
C
122 lines
3.3 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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/*
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* Copyright (c) International Business Machines Corp., 2007
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* Author(s): Steve French (sfrench@us.ibm.com)
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* Modified by Namjae Jeon (linkinjeon@kernel.org)
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*/
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#ifndef _COMMON_SMBACL_H
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#define _COMMON_SMBACL_H
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#define NUM_AUTHS (6) /* number of authority fields */
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#define SID_MAX_SUB_AUTHORITIES (15) /* max number of sub authority fields */
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/* ACE types - see MS-DTYP 2.4.4.1 */
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#define ACCESS_ALLOWED_ACE_TYPE 0x00
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#define ACCESS_DENIED_ACE_TYPE 0x01
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#define SYSTEM_AUDIT_ACE_TYPE 0x02
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#define SYSTEM_ALARM_ACE_TYPE 0x03
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#define ACCESS_ALLOWED_COMPOUND_ACE_TYPE 0x04
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#define ACCESS_ALLOWED_OBJECT_ACE_TYPE 0x05
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#define ACCESS_DENIED_OBJECT_ACE_TYPE 0x06
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#define SYSTEM_AUDIT_OBJECT_ACE_TYPE 0x07
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#define SYSTEM_ALARM_OBJECT_ACE_TYPE 0x08
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#define ACCESS_ALLOWED_CALLBACK_ACE_TYPE 0x09
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#define ACCESS_DENIED_CALLBACK_ACE_TYPE 0x0A
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#define ACCESS_ALLOWED_CALLBACK_OBJECT_ACE_TYPE 0x0B
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#define ACCESS_DENIED_CALLBACK_OBJECT_ACE_TYPE 0x0C
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#define SYSTEM_AUDIT_CALLBACK_ACE_TYPE 0x0D
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#define SYSTEM_ALARM_CALLBACK_ACE_TYPE 0x0E /* Reserved */
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#define SYSTEM_AUDIT_CALLBACK_OBJECT_ACE_TYPE 0x0F
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#define SYSTEM_ALARM_CALLBACK_OBJECT_ACE_TYPE 0x10 /* reserved */
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#define SYSTEM_MANDATORY_LABEL_ACE_TYPE 0x11
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#define SYSTEM_RESOURCE_ATTRIBUTE_ACE_TYPE 0x12
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#define SYSTEM_SCOPED_POLICY_ID_ACE_TYPE 0x13
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/* ACE flags */
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#define OBJECT_INHERIT_ACE 0x01
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#define CONTAINER_INHERIT_ACE 0x02
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#define NO_PROPAGATE_INHERIT_ACE 0x04
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#define INHERIT_ONLY_ACE 0x08
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#define INHERITED_ACE 0x10
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#define SUCCESSFUL_ACCESS_ACE_FLAG 0x40
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#define FAILED_ACCESS_ACE_FLAG 0x80
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/*
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* Maximum size of a string representation of a SID:
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*
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* The fields are unsigned values in decimal. So:
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*
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* u8: max 3 bytes in decimal
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* u32: max 10 bytes in decimal
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*
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* "S-" + 3 bytes for version field + 15 for authority field + NULL terminator
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*
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* For authority field, max is when all 6 values are non-zero and it must be
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* represented in hex. So "-0x" + 12 hex digits.
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*
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* Add 11 bytes for each subauthority field (10 bytes each + 1 for '-')
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*/
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#define SID_STRING_BASE_SIZE (2 + 3 + 15 + 1)
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#define SID_STRING_SUBAUTH_SIZE (11) /* size of a single subauth string */
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#define DOMAIN_USER_RID_LE cpu_to_le32(513)
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/*
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* ACE types - see MS-DTYP 2.4.4.1
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*/
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enum {
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ACCESS_ALLOWED,
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ACCESS_DENIED,
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};
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/*
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* Security ID types
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*/
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enum {
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SIDOWNER = 1,
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SIDGROUP,
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SIDCREATOR_OWNER,
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SIDCREATOR_GROUP,
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SIDUNIX_USER,
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SIDUNIX_GROUP,
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SIDNFS_USER,
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SIDNFS_GROUP,
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SIDNFS_MODE,
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};
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struct smb_ntsd {
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__le16 revision; /* revision level */
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__le16 type;
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__le32 osidoffset;
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__le32 gsidoffset;
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__le32 sacloffset;
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__le32 dacloffset;
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} __attribute__((packed));
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struct smb_sid {
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__u8 revision; /* revision level */
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__u8 num_subauth;
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__u8 authority[NUM_AUTHS];
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__le32 sub_auth[SID_MAX_SUB_AUTHORITIES]; /* sub_auth[num_subauth] */
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} __attribute__((packed));
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/* size of a struct smb_sid, sans sub_auth array */
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#define CIFS_SID_BASE_SIZE (1 + 1 + NUM_AUTHS)
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struct smb_acl {
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__le16 revision; /* revision level */
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__le16 size;
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__le16 num_aces;
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__le16 reserved;
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} __attribute__((packed));
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struct smb_ace {
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__u8 type; /* see above and MS-DTYP 2.4.4.1 */
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__u8 flags;
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__le16 size;
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__le32 access_req;
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struct smb_sid sid; /* ie UUID of user or group who gets these perms */
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} __attribute__((packed));
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#endif /* _COMMON_SMBACL_H */
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