1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
|
/*
* Convert ZFS/NFSv4 acls to NT acls and vice versa.
*
* Copyright (C) Jiri Sasek, 2007
* based on the foobar.c module which is copyrighted by Volker Lendecke
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include "includes.h"
#include "nfs4_acls.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_VFS
#define ZFSACL_MODULE_NAME "zfsacl"
/* zfs_get_nt_acl()
* read the local file's acls and return it in NT form
* using the NFSv4 format conversion
*/
static size_t zfs_get_nt_acl(struct files_struct *fsp, uint32 security_info,
struct security_descriptor **ppdesc)
{
int naces, i;
ace_t *acebuf;
SMB4ACL_T *pacl;
TALLOC_CTX *mem_ctx;
/* read the number of file aces */
if((naces = acl(fsp->fsp_name, ACE_GETACLCNT, 0, NULL)) == -1) {
if(errno == ENOSYS) {
DEBUG(9, ("acl(ACE_GETACLCNT, %s): Operation is not supported on the filesystem where the file reside"));
} else {
DEBUG(9, ("acl(ACE_GETACLCNT, %s): %s ", fsp->fsp_name,
strerror(errno)));
}
return 0;
}
/* allocate the field of ZFS aces */
mem_ctx = main_loop_talloc_get();
acebuf = (ace_t *) talloc_size(mem_ctx, sizeof(ace_t)*naces);
if(acebuf == NULL) {
errno = ENOMEM;
return 0;
}
/* read the aces into the field */
if(acl(fsp->fsp_name, ACE_GETACL, naces, acebuf) < 0) {
DEBUG(9, ("acl(ACE_GETACL, %s): %s ", fsp->fsp_name,
strerror(errno)));
return 0;
}
/* create SMB4ACL data */
if((pacl = smb_create_smb4acl()) == NULL) return 0;
for(i=0; i<naces; i++) {
SMB_ACE4PROP_T aceprop;
aceprop.aceType = (uint32) acebuf[i].a_type;
aceprop.aceFlags = (uint32) acebuf[i].a_flags;
aceprop.aceMask = (uint32) acebuf[i].a_access_mask;
aceprop.who.id = (uint32) acebuf[i].a_who;
aceprop.flags = 0;
if(smb_add_ace4(pacl, &aceprop) == NULL) return 0;
}
return smb_get_nt_acl_nfs4(fsp, security_info, ppdesc, pacl);
}
/* call-back function processing the NT acl -> ZFS acl using NFSv4 conv. */
static BOOL zfs_process_smbacl(files_struct *fsp, SMB4ACL_T *smbacl)
{
int naces = smb_get_naces(smbacl), i;
ace_t *acebuf;
SMB4ACE_T *smbace;
TALLOC_CTX *mem_ctx;
/* allocate the field of ZFS aces */
mem_ctx = main_loop_talloc_get();
acebuf = (ace_t *) talloc_size(mem_ctx, sizeof(ace_t)*naces);
if(acebuf == NULL) {
errno = ENOMEM;
return False;
}
/* handle all aces */
for(smbace = smb_first_ace4(smbacl), i = 0;
smbace!=NULL;
smbace = smb_next_ace4(smbace), i++) {
SMB_ACE4PROP_T *aceprop = smb_get_ace4(smbace);
acebuf[i].a_type = aceprop->aceType;
acebuf[i].a_flags = aceprop->aceFlags;
acebuf[i].a_access_mask = aceprop->aceMask;
acebuf[i].a_who = aceprop->who.id;
}
SMB_ASSERT(i == naces);
/* store acl */
if(acl(fsp->fsp_name, ACE_SETACL, naces, acebuf)) {
if(errno == ENOSYS) {
DEBUG(9, ("acl(ACE_SETACL, %s): Operation is not supported on the filesystem where the file reside"));
} else {
DEBUG(9, ("acl(ACE_SETACL, %s): %s ", fsp->fsp_name,
strerror(errno)));
}
return 0;
}
return True;
}
/* zfs_set_nt_acl()
* set the local file's acls obtaining it in NT form
* using the NFSv4 format conversion
*/
static BOOL zfs_set_nt_acl(vfs_handle_struct *handle, files_struct *fsp,
uint32 security_info_sent,
struct security_descriptor *psd)
{
return smb_set_nt_acl_nfs4(fsp, security_info_sent, psd,
zfs_process_smbacl);
}
size_t zfsacl_fget_nt_acl(struct vfs_handle_struct *handle,
struct files_struct *fsp,
int fd, uint32 security_info,
struct security_descriptor **ppdesc)
{
return zfs_get_nt_acl(fsp, security_info, ppdesc);
}
size_t zfsacl_get_nt_acl(struct vfs_handle_struct *handle,
struct files_struct *fsp,
const char *name, uint32 security_info,
struct security_descriptor **ppdesc)
{
return zfs_get_nt_acl(fsp, security_info, ppdesc);
}
BOOL zfsacl_fset_nt_acl(vfs_handle_struct *handle,
files_struct *fsp,
int fd, uint32 security_info_sent,
SEC_DESC *psd)
{
return zfs_set_nt_acl(handle, fsp, security_info_sent, psd);
}
BOOL zfsacl_set_nt_acl(vfs_handle_struct *handle,
files_struct *fsp,
const char *name, uint32 security_info_sent,
SEC_DESC *psd)
{
return zfs_set_nt_acl(handle, fsp, security_info_sent, psd);
}
/* VFS operations structure */
static vfs_op_tuple zfsacl_ops[] = {
{SMB_VFS_OP(zfsacl_fget_nt_acl), SMB_VFS_OP_FGET_NT_ACL,
SMB_VFS_LAYER_TRANSPARENT},
{SMB_VFS_OP(zfsacl_get_nt_acl), SMB_VFS_OP_GET_NT_ACL,
SMB_VFS_LAYER_TRANSPARENT},
{SMB_VFS_OP(zfsacl_fset_nt_acl), SMB_VFS_OP_FSET_NT_ACL,
SMB_VFS_LAYER_TRANSPARENT},
{SMB_VFS_OP(zfsacl_set_nt_acl), SMB_VFS_OP_SET_NT_ACL,
SMB_VFS_LAYER_TRANSPARENT},
{SMB_VFS_OP(NULL), SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP}
};
NTSTATUS vfs_zfsacl_init(void);
NTSTATUS vfs_zfsacl_init(void)
{
return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "zfsacl",
zfsacl_ops);
}
|
