130 lines
3.6 KiB
C
130 lines
3.6 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
|
|
/*
|
|
* Copyright (c) International Business Machines Corp., 2007
|
|
* Author(s): Steve French (sfrench@us.ibm.com)
|
|
* Modified by Namjae Jeon (linkinjeon@kernel.org)
|
|
*/
|
|
|
|
#ifndef _SMBACL_H
|
|
#define _SMBACL_H
|
|
|
|
#include "../common/smbacl.h"
|
|
#include <linux/fs.h>
|
|
#include <linux/namei.h>
|
|
#include <linux/posix_acl.h>
|
|
#include <linux/mnt_idmapping.h>
|
|
|
|
#include "mgmt/tree_connect.h"
|
|
|
|
/* Revision for ACLs */
|
|
#define SD_REVISION 1
|
|
|
|
/* Control flags for Security Descriptor */
|
|
#define OWNER_DEFAULTED 0x0001
|
|
#define GROUP_DEFAULTED 0x0002
|
|
#define DACL_PRESENT 0x0004
|
|
#define DACL_DEFAULTED 0x0008
|
|
#define SACL_PRESENT 0x0010
|
|
#define SACL_DEFAULTED 0x0020
|
|
#define DACL_TRUSTED 0x0040
|
|
#define SERVER_SECURITY 0x0080
|
|
#define DACL_AUTO_INHERIT_REQ 0x0100
|
|
#define SACL_AUTO_INHERIT_REQ 0x0200
|
|
#define DACL_AUTO_INHERITED 0x0400
|
|
#define SACL_AUTO_INHERITED 0x0800
|
|
#define DACL_PROTECTED 0x1000
|
|
#define SACL_PROTECTED 0x2000
|
|
#define RM_CONTROL_VALID 0x4000
|
|
#define SELF_RELATIVE 0x8000
|
|
|
|
struct ksmbd_conn;
|
|
|
|
struct smb_fattr {
|
|
kuid_t cf_uid;
|
|
kgid_t cf_gid;
|
|
umode_t cf_mode;
|
|
__le32 daccess;
|
|
struct posix_acl *cf_acls;
|
|
struct posix_acl *cf_dacls;
|
|
};
|
|
|
|
struct posix_ace_state {
|
|
u32 allow;
|
|
u32 deny;
|
|
};
|
|
|
|
struct posix_user_ace_state {
|
|
union {
|
|
kuid_t uid;
|
|
kgid_t gid;
|
|
};
|
|
struct posix_ace_state perms;
|
|
};
|
|
|
|
struct posix_ace_state_array {
|
|
int n;
|
|
struct posix_user_ace_state aces[];
|
|
};
|
|
|
|
/*
|
|
* while processing the nfsv4 ace, this maintains the partial permissions
|
|
* calculated so far:
|
|
*/
|
|
|
|
struct posix_acl_state {
|
|
struct posix_ace_state owner;
|
|
struct posix_ace_state group;
|
|
struct posix_ace_state other;
|
|
struct posix_ace_state everyone;
|
|
struct posix_ace_state mask; /* deny unused in this case */
|
|
struct posix_ace_state_array *users;
|
|
struct posix_ace_state_array *groups;
|
|
};
|
|
|
|
int parse_sec_desc(struct mnt_idmap *idmap, struct smb_ntsd *pntsd,
|
|
int acl_len, struct smb_fattr *fattr);
|
|
int build_sec_desc(struct mnt_idmap *idmap, struct smb_ntsd *pntsd,
|
|
struct smb_ntsd *ppntsd, int ppntsd_size, int addition_info,
|
|
__u32 *secdesclen, struct smb_fattr *fattr);
|
|
int init_acl_state(struct posix_acl_state *state, int cnt);
|
|
void free_acl_state(struct posix_acl_state *state);
|
|
void posix_state_to_acl(struct posix_acl_state *state,
|
|
struct posix_acl_entry *pace);
|
|
int compare_sids(const struct smb_sid *ctsid, const struct smb_sid *cwsid);
|
|
bool smb_inherit_flags(int flags, bool is_dir);
|
|
int smb_inherit_dacl(struct ksmbd_conn *conn, const struct path *path,
|
|
unsigned int uid, unsigned int gid);
|
|
int smb_check_perm_dacl(struct ksmbd_conn *conn, const struct path *path,
|
|
__le32 *pdaccess, int uid);
|
|
int set_info_sec(struct ksmbd_conn *conn, struct ksmbd_tree_connect *tcon,
|
|
const struct path *path, struct smb_ntsd *pntsd, int ntsd_len,
|
|
bool type_check, bool get_write);
|
|
void id_to_sid(unsigned int cid, uint sidtype, struct smb_sid *ssid);
|
|
void ksmbd_init_domain(u32 *sub_auth);
|
|
|
|
static inline uid_t posix_acl_uid_translate(struct mnt_idmap *idmap,
|
|
struct posix_acl_entry *pace)
|
|
{
|
|
vfsuid_t vfsuid;
|
|
|
|
/* If this is an idmapped mount, apply the idmapping. */
|
|
vfsuid = make_vfsuid(idmap, &init_user_ns, pace->e_uid);
|
|
|
|
/* Translate the kuid into a userspace id ksmbd would see. */
|
|
return from_kuid(&init_user_ns, vfsuid_into_kuid(vfsuid));
|
|
}
|
|
|
|
static inline gid_t posix_acl_gid_translate(struct mnt_idmap *idmap,
|
|
struct posix_acl_entry *pace)
|
|
{
|
|
vfsgid_t vfsgid;
|
|
|
|
/* If this is an idmapped mount, apply the idmapping. */
|
|
vfsgid = make_vfsgid(idmap, &init_user_ns, pace->e_gid);
|
|
|
|
/* Translate the kgid into a userspace id ksmbd would see. */
|
|
return from_kgid(&init_user_ns, vfsgid_into_kgid(vfsgid));
|
|
}
|
|
|
|
#endif /* _SMBACL_H */
|