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b51174da74
In order to maintain the code more easily, move duplicate definitions to new common header file. Signed-off-by: ChenXiaoSong <chenxiaosong@kylinos.cn> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
111 lines
3.5 KiB
C
111 lines
3.5 KiB
C
/* SPDX-License-Identifier: LGPL-2.1 */
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/*
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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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*
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*/
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#ifndef _CIFSACL_H
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#define _CIFSACL_H
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#include "../common/smbacl.h"
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#define READ_BIT 0x4
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#define WRITE_BIT 0x2
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#define EXEC_BIT 0x1
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#define ACL_OWNER_MASK 0700
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#define ACL_GROUP_MASK 0070
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#define ACL_EVERYONE_MASK 0007
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#define UBITSHIFT 6
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#define GBITSHIFT 3
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/*
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* Security Descriptor length containing DACL with 3 ACEs (one each for
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* owner, group and world).
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*/
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#define DEFAULT_SEC_DESC_LEN (sizeof(struct smb_ntsd) + \
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sizeof(struct smb_acl) + \
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(sizeof(struct smb_ace) * 4))
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/*
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* The current SMB3 form of security descriptor is similar to what was used for
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* cifs (see above) but some fields are split, and fields in the struct below
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* matches names of fields to the spec, MS-DTYP (see sections 2.4.5 and
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* 2.4.6). Note that "CamelCase" fields are used in this struct in order to
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* match the MS-DTYP and MS-SMB2 specs which define the wire format.
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*/
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struct smb3_sd {
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__u8 Revision; /* revision level, MUST be one */
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__u8 Sbz1; /* only meaningful if 'RM' flag set below */
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__le16 Control;
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__le32 OffsetOwner;
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__le32 OffsetGroup;
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__le32 OffsetSacl;
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__le32 OffsetDacl;
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} __packed;
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/* Meaning of 'Control' field flags */
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#define ACL_CONTROL_SR 0x8000 /* Self relative */
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#define ACL_CONTROL_RM 0x4000 /* Resource manager control bits */
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#define ACL_CONTROL_PS 0x2000 /* SACL protected from inherits */
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#define ACL_CONTROL_PD 0x1000 /* DACL protected from inherits */
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#define ACL_CONTROL_SI 0x0800 /* SACL Auto-Inherited */
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#define ACL_CONTROL_DI 0x0400 /* DACL Auto-Inherited */
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#define ACL_CONTROL_SC 0x0200 /* SACL computed through inheritance */
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#define ACL_CONTROL_DC 0x0100 /* DACL computed through inheritence */
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#define ACL_CONTROL_SS 0x0080 /* Create server ACL */
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#define ACL_CONTROL_DT 0x0040 /* DACL provided by trusted source */
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#define ACL_CONTROL_SD 0x0020 /* SACL defaulted */
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#define ACL_CONTROL_SP 0x0010 /* SACL is present on object */
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#define ACL_CONTROL_DD 0x0008 /* DACL defaulted */
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#define ACL_CONTROL_DP 0x0004 /* DACL is present on object */
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#define ACL_CONTROL_GD 0x0002 /* Group was defaulted */
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#define ACL_CONTROL_OD 0x0001 /* User was defaulted */
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/* Meaning of AclRevision flags */
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#define ACL_REVISION 0x02 /* See section 2.4.4.1 of MS-DTYP */
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#define ACL_REVISION_DS 0x04 /* Additional AceTypes allowed */
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struct smb3_acl {
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u8 AclRevision; /* revision level */
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u8 Sbz1; /* MBZ */
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__le16 AclSize;
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__le16 AceCount;
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__le16 Sbz2; /* MBZ */
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} __packed;
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/*
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* Used to store the special 'NFS SIDs' used to persist the POSIX uid and gid
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* See http://technet.microsoft.com/en-us/library/hh509017(v=ws.10).aspx
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*/
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struct owner_sid {
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u8 Revision;
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u8 NumAuth;
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u8 Authority[6];
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__le32 SubAuthorities[3];
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} __packed;
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struct owner_group_sids {
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struct owner_sid owner;
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struct owner_sid group;
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} __packed;
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/*
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* Minimum security identifier can be one for system defined Users
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* and Groups such as NULL SID and World or Built-in accounts such
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* as Administrator and Guest and consists of
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* Revision + Num (Sub)Auths + Authority + Domain (one Subauthority)
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*/
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#define MIN_SID_LEN (1 + 1 + 6 + 4) /* in bytes */
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/*
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* Minimum security descriptor can be one without any SACL and DACL and can
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* consist of revision, type, and two sids of minimum size for owner and group
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*/
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#define MIN_SEC_DESC_LEN (sizeof(struct smb_ntsd) + (2 * MIN_SID_LEN))
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#endif /* _CIFSACL_H */
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