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
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
|
/*
Unix SMB/Netbios implementation.
VFS module to get and set posix acls
Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2006
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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
SMB_ACL_T aixacl_to_smbacl(struct acl *file_acl)
{
struct acl_entry *acl_entry;
struct ace_id *idp;
struct smb_acl_t *result = SMB_MALLOC_P(struct smb_acl_t);
struct smb_acl_entry *ace;
int i;
if (result == NULL) {
return NULL;
}
ZERO_STRUCTP(result);
/* Point to the first acl entry in the acl */
acl_entry = file_acl->acl_ext;
DEBUG(10,("acl_entry is %d\n",acl_entry));
DEBUG(10,("acl_last(file_acl) id %d\n",acl_last(file_acl)));
/* Check if the extended acl bit is on. *
* If it isn't, do not show the *
* contents of the acl since AIX intends *
* the extended info to remain unused */
if(file_acl->acl_mode & S_IXACL){
/* while we are not pointing to the very end */
while(acl_entry < acl_last(file_acl)) {
/* before we malloc anything, make sure this is */
/* a valid acl entry and one that we want to map */
idp = id_nxt(acl_entry->ace_id);
if((acl_entry->ace_type == ACC_SPECIFY ||
(acl_entry->ace_type == ACC_PERMIT)) && (idp != id_last(acl_entry))) {
acl_entry = acl_nxt(acl_entry);
continue;
}
idp = acl_entry->ace_id;
DEBUG(10,("idp->id_data is %d\n",idp->id_data[0]));
result = SMB_REALLOC(result, sizeof(struct smb_acl_t) +
(sizeof(struct smb_acl_entry) *
(result->count+1)));
if (result == NULL) {
DEBUG(0, ("SMB_REALLOC failed\n"));
errno = ENOMEM;
return NULL;
}
DEBUG(10,("idp->id_type is %d\n",idp->id_type));
ace = &result->acl[result->count];
ace->a_type = idp->id_type;
switch(ace->a_type) {
case ACEID_USER: {
ace->uid = idp->id_data[0];
DEBUG(10,("case ACEID_USER ace->uid is %d\n",ace->uid));
ace->a_type = SMB_ACL_USER;
break;
}
case ACEID_GROUP: {
ace->gid = idp->id_data[0];
DEBUG(10,("case ACEID_GROUP ace->gid is %d\n",ace->gid));
ace->a_type = SMB_ACL_GROUP;
break;
}
default:
break;
}
/* The access in the acl entries must be left shifted by *
* three bites, because they will ultimately be compared *
* to S_IRUSR, S_IWUSR, and S_IXUSR. */
switch(acl_entry->ace_type){
case ACC_PERMIT:
case ACC_SPECIFY:
ace->a_perm = acl_entry->ace_access;
ace->a_perm <<= 6;
DEBUG(10,("ace->a_perm is %d\n",ace->a_perm));
break;
case ACC_DENY:
/* Since there is no way to return a DENY acl entry *
* change to PERMIT and then shift. */
DEBUG(10,("acl_entry->ace_access is %d\n",acl_entry->ace_access));
ace->a_perm = ~acl_entry->ace_access & 7;
DEBUG(10,("ace->a_perm is %d\n",ace->a_perm));
ace->a_perm <<= 6;
break;
default:
DEBUG(0, ("unknown ace->type\n"));
SAFE_FREE(result);
return(0);
}
result->count++;
ace->a_perm |= (ace->a_perm & S_IRUSR) ? SMB_ACL_READ : 0;
ace->a_perm |= (ace->a_perm & S_IWUSR) ? SMB_ACL_WRITE : 0;
ace->a_perm |= (ace->a_perm & S_IXUSR) ? SMB_ACL_EXECUTE : 0;
DEBUG(10,("ace->a_perm is %d\n",ace->a_perm));
DEBUG(10,("acl_entry = %d\n",acl_entry));
DEBUG(10,("The ace_type is %d\n",acl_entry->ace_type));
acl_entry = acl_nxt(acl_entry);
}
} /* end of if enabled */
/* Since owner, group, other acl entries are not *
* part of the acl entries in an acl, they must *
* be dummied up to become part of the list. */
for( i = 1; i < 4; i++) {
DEBUG(10,("i is %d\n",i));
result = SMB_REALLOC(result, sizeof(struct smb_acl_t) +
(sizeof(struct smb_acl_entry) *
(result->count+1)));
if (result == NULL) {
DEBUG(0, ("SMB_REALLOC failed\n"));
errno = ENOMEM;
DEBUG(0,("Error in AIX sys_acl_get_file is %d\n",errno));
return NULL;
}
ace = &result->acl[result->count];
ace->uid = 0;
ace->gid = 0;
DEBUG(10,("ace->uid = %d\n",ace->uid));
switch(i) {
case 2:
ace->a_perm = file_acl->g_access << 6;
ace->a_type = SMB_ACL_GROUP_OBJ;
break;
case 3:
ace->a_perm = file_acl->o_access << 6;
ace->a_type = SMB_ACL_OTHER;
break;
case 1:
ace->a_perm = file_acl->u_access << 6;
ace->a_type = SMB_ACL_USER_OBJ;
break;
default:
return(NULL);
}
ace->a_perm |= ((ace->a_perm & S_IRUSR) ? SMB_ACL_READ : 0);
ace->a_perm |= ((ace->a_perm & S_IWUSR) ? SMB_ACL_WRITE : 0);
ace->a_perm |= ((ace->a_perm & S_IXUSR) ? SMB_ACL_EXECUTE : 0);
memcpy(&result->acl[result->count],ace,sizeof(struct smb_acl_entry));
result->count++;
DEBUG(10,("ace->a_perm = %d\n",ace->a_perm));
DEBUG(10,("ace->a_type = %d\n",ace->a_type));
}
return result;
}
static ushort aixacl_smb_to_aixperm(SMB_ACL_PERM_T a_perm)
{
ushort ret = (ushort)0;
if (a_perm & SMB_ACL_READ)
ret |= R_ACC;
if (a_perm & SMB_ACL_WRITE)
ret |= W_ACC;
if (a_perm & SMB_ACL_EXECUTE)
ret |= X_ACC;
return ret;
}
struct acl *aixacl_smb_to_aixacl(SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl)
{
struct smb_acl_entry *smb_entry = NULL;
struct acl *file_acl = NULL;
struct acl *file_acl_temp = NULL;
struct acl_entry *acl_entry = NULL;
struct ace_id *ace_id = NULL;
unsigned int id_type;
unsigned int user_id;
unsigned int acl_length;
int i;
DEBUG(10,("Entering aixacl_smb_to_aixacl\n"));
/* AIX has no default ACL */
if(acltype == SMB_ACL_TYPE_DEFAULT)
return NULL;
acl_length = BUFSIZ;
file_acl = (struct acl *)SMB_MALLOC(BUFSIZ);
if(file_acl == NULL) {
errno = ENOMEM;
DEBUG(0,("Error in aixacl_smb_to_aixacl is %d\n",errno));
return NULL;
}
memset(file_acl,0,BUFSIZ);
file_acl->acl_len = ACL_SIZ;
file_acl->acl_mode = S_IXACL;
for(i=0; i<theacl->count; i++ ) {
smb_entry = &(theacl->acl[i]);
id_type = smb_entry->a_type;
DEBUG(10,("The id_type is %d\n",id_type));
switch(id_type) {
case SMB_ACL_USER_OBJ:
file_acl->u_access = aixacl_smb_to_aixperm(smb_entry->a_perm);
continue;
case SMB_ACL_GROUP_OBJ:
file_acl->g_access = aixacl_smb_to_aixperm(smb_entry->a_perm);
continue;
case SMB_ACL_OTHER:
file_acl->o_access = aixacl_smb_to_aixperm(smb_entry->a_perm);
continue;
case SMB_ACL_MASK:
continue;
case SMB_ACL_GROUP:
break; /* process this */
case SMB_ACL_USER:
break; /* process this */
default: /* abnormal case */
DEBUG(10,("The id_type is unknown !\n"));
continue;
}
if((file_acl->acl_len + sizeof(struct acl_entry)) > acl_length) {
acl_length += sizeof(struct acl_entry);
file_acl_temp = (struct acl *)SMB_MALLOC(acl_length);
if(file_acl_temp == NULL) {
SAFE_FREE(file_acl);
errno = ENOMEM;
DEBUG(0,("Error in aixacl_smb_to_aixacl is %d\n",errno));
return NULL;
}
memcpy(file_acl_temp,file_acl,file_acl->acl_len);
SAFE_FREE(file_acl);
file_acl = file_acl_temp;
}
acl_entry = (struct acl_entry *)((char *)file_acl + file_acl->acl_len);
file_acl->acl_len += sizeof(struct acl_entry);
acl_entry->ace_len = sizeof(struct acl_entry); /* contains 1 ace_id */
acl_entry->ace_access = aixacl_smb_to_aixperm(smb_entry->a_perm);
/* In order to use this, we'll need to wait until we can get denies */
/* if(!acl_entry->ace_access && acl_entry->ace_type == ACC_PERMIT)
acl_entry->ace_type = ACC_SPECIFY; */
acl_entry->ace_type = ACC_SPECIFY;
ace_id = acl_entry->ace_id;
ace_id->id_type = (smb_entry->a_type==SMB_ACL_GROUP) ? ACEID_GROUP : ACEID_USER;
DEBUG(10,("The id type is %d\n",ace_id->id_type));
ace_id->id_len = sizeof(struct ace_id); /* contains 1 id_data */
ace_id->id_data[0] = (smb_entry->a_type==SMB_ACL_GROUP) ? smb_entry->gid : smb_entry->uid;
}
return file_acl;
}
|
