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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>
130 lines
3.6 KiB
C
130 lines
3.6 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 _SMBACL_H
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#define _SMBACL_H
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#include "../common/smbacl.h"
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#include <linux/fs.h>
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#include <linux/namei.h>
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#include <linux/posix_acl.h>
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#include <linux/mnt_idmapping.h>
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#include "mgmt/tree_connect.h"
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/* Revision for ACLs */
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#define SD_REVISION 1
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/* Control flags for Security Descriptor */
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#define OWNER_DEFAULTED 0x0001
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#define GROUP_DEFAULTED 0x0002
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#define DACL_PRESENT 0x0004
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#define DACL_DEFAULTED 0x0008
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#define SACL_PRESENT 0x0010
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#define SACL_DEFAULTED 0x0020
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#define DACL_TRUSTED 0x0040
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#define SERVER_SECURITY 0x0080
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#define DACL_AUTO_INHERIT_REQ 0x0100
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#define SACL_AUTO_INHERIT_REQ 0x0200
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#define DACL_AUTO_INHERITED 0x0400
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#define SACL_AUTO_INHERITED 0x0800
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#define DACL_PROTECTED 0x1000
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#define SACL_PROTECTED 0x2000
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#define RM_CONTROL_VALID 0x4000
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#define SELF_RELATIVE 0x8000
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struct ksmbd_conn;
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struct smb_fattr {
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kuid_t cf_uid;
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kgid_t cf_gid;
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umode_t cf_mode;
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__le32 daccess;
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struct posix_acl *cf_acls;
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struct posix_acl *cf_dacls;
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};
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struct posix_ace_state {
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u32 allow;
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u32 deny;
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};
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struct posix_user_ace_state {
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union {
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kuid_t uid;
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kgid_t gid;
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};
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struct posix_ace_state perms;
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};
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struct posix_ace_state_array {
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int n;
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struct posix_user_ace_state aces[];
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};
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/*
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* while processing the nfsv4 ace, this maintains the partial permissions
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* calculated so far:
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*/
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struct posix_acl_state {
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struct posix_ace_state owner;
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struct posix_ace_state group;
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struct posix_ace_state other;
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struct posix_ace_state everyone;
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struct posix_ace_state mask; /* deny unused in this case */
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struct posix_ace_state_array *users;
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struct posix_ace_state_array *groups;
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};
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int parse_sec_desc(struct mnt_idmap *idmap, struct smb_ntsd *pntsd,
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int acl_len, struct smb_fattr *fattr);
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int build_sec_desc(struct mnt_idmap *idmap, struct smb_ntsd *pntsd,
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struct smb_ntsd *ppntsd, int ppntsd_size, int addition_info,
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__u32 *secdesclen, struct smb_fattr *fattr);
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int init_acl_state(struct posix_acl_state *state, int cnt);
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void free_acl_state(struct posix_acl_state *state);
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void posix_state_to_acl(struct posix_acl_state *state,
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struct posix_acl_entry *pace);
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int compare_sids(const struct smb_sid *ctsid, const struct smb_sid *cwsid);
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bool smb_inherit_flags(int flags, bool is_dir);
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int smb_inherit_dacl(struct ksmbd_conn *conn, const struct path *path,
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unsigned int uid, unsigned int gid);
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int smb_check_perm_dacl(struct ksmbd_conn *conn, const struct path *path,
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__le32 *pdaccess, int uid);
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int set_info_sec(struct ksmbd_conn *conn, struct ksmbd_tree_connect *tcon,
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const struct path *path, struct smb_ntsd *pntsd, int ntsd_len,
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bool type_check, bool get_write);
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void id_to_sid(unsigned int cid, uint sidtype, struct smb_sid *ssid);
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void ksmbd_init_domain(u32 *sub_auth);
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static inline uid_t posix_acl_uid_translate(struct mnt_idmap *idmap,
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struct posix_acl_entry *pace)
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{
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vfsuid_t vfsuid;
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/* If this is an idmapped mount, apply the idmapping. */
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vfsuid = make_vfsuid(idmap, &init_user_ns, pace->e_uid);
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/* Translate the kuid into a userspace id ksmbd would see. */
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return from_kuid(&init_user_ns, vfsuid_into_kuid(vfsuid));
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}
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static inline gid_t posix_acl_gid_translate(struct mnt_idmap *idmap,
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struct posix_acl_entry *pace)
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{
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vfsgid_t vfsgid;
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/* If this is an idmapped mount, apply the idmapping. */
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vfsgid = make_vfsgid(idmap, &init_user_ns, pace->e_gid);
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/* Translate the kgid into a userspace id ksmbd would see. */
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return from_kgid(&init_user_ns, vfsgid_into_kgid(vfsgid));
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}
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#endif /* _SMBACL_H */
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