2 Unix SMB/Netbios implementation.
3 VFS module to get and set posix acls
4 Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2006
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
21 #include "system/filesys.h"
22 #include "smbd/smbd.h"
23 #include "vfs_aixacl_util.h"
25 SMB_ACL_T aixacl_to_smbacl(struct acl *file_acl)
27 struct acl_entry *acl_entry;
30 struct smb_acl_t *result = sys_acl_init(0);
31 struct smb_acl_entry *ace;
38 /* Point to the first acl entry in the acl */
39 acl_entry = file_acl->acl_ext;
43 DEBUG(10,("acl_entry is %p\n",(void *)acl_entry));
44 DEBUG(10,("acl_last(file_acl) id %p\n",(void *)acl_last(file_acl)));
46 /* Check if the extended acl bit is on. *
47 * If it isn't, do not show the *
48 * contents of the acl since AIX intends *
49 * the extended info to remain unused */
51 if(file_acl->acl_mode & S_IXACL){
52 /* while we are not pointing to the very end */
53 while(acl_entry < acl_last(file_acl)) {
54 /* before we malloc anything, make sure this is */
55 /* a valid acl entry and one that we want to map */
56 idp = id_nxt(acl_entry->ace_id);
57 if((acl_entry->ace_type == ACC_SPECIFY ||
58 (acl_entry->ace_type == ACC_PERMIT)) && (idp != id_last(acl_entry))) {
59 acl_entry = acl_nxt(acl_entry);
63 idp = acl_entry->ace_id;
64 DEBUG(10,("idp->id_data is %d\n",idp->id_data[0]));
66 result->acl = talloc_realloc(result, result->acl, result->count+1);
68 DEBUG(0, ("talloc_realloc failed\n"));
74 DEBUG(10,("idp->id_type is %d\n",idp->id_type));
75 ace = &result->acl[result->count];
77 ace->a_type = idp->id_type;
81 ace->uid = idp->id_data[0];
82 DEBUG(10,("case ACEID_USER ace->uid is %d\n",ace->uid));
83 ace->a_type = SMB_ACL_USER;
88 ace->gid = idp->id_data[0];
89 DEBUG(10,("case ACEID_GROUP ace->gid is %d\n",ace->gid));
90 ace->a_type = SMB_ACL_GROUP;
96 /* The access in the acl entries must be left shifted by *
97 * three bites, because they will ultimately be compared *
98 * to S_IRUSR, S_IWUSR, and S_IXUSR. */
100 switch(acl_entry->ace_type){
103 ace->a_perm = acl_entry->ace_access;
105 DEBUG(10,("ace->a_perm is %d\n",ace->a_perm));
108 /* Since there is no way to return a DENY acl entry *
109 * change to PERMIT and then shift. */
110 DEBUG(10,("acl_entry->ace_access is %d\n",acl_entry->ace_access));
111 ace->a_perm = ~acl_entry->ace_access & 7;
112 DEBUG(10,("ace->a_perm is %d\n",ace->a_perm));
116 DEBUG(0, ("unknown ace->type\n"));
122 ace->a_perm |= (ace->a_perm & S_IRUSR) ? SMB_ACL_READ : 0;
123 ace->a_perm |= (ace->a_perm & S_IWUSR) ? SMB_ACL_WRITE : 0;
124 ace->a_perm |= (ace->a_perm & S_IXUSR) ? SMB_ACL_EXECUTE : 0;
125 DEBUG(10,("ace->a_perm is %d\n",ace->a_perm));
127 DEBUG(10,("acl_entry = %p\n",(void *)acl_entry));
128 DEBUG(10,("The ace_type is %d\n",acl_entry->ace_type));
130 acl_entry = acl_nxt(acl_entry);
132 } /* end of if enabled */
134 /* Since owner, group, other acl entries are not *
135 * part of the acl entries in an acl, they must *
136 * be dummied up to become part of the list. */
138 for( i = 1; i < 4; i++) {
139 DEBUG(10,("i is %d\n",i));
141 result->acl = talloc_realloc(result, result->acl, result->count+1);
142 if (result->acl == NULL) {
144 DEBUG(0, ("talloc_realloc failed\n"));
146 DEBUG(0,("Error in AIX sys_acl_get_file is %d\n",errno));
150 ace = &result->acl[result->count];
154 DEBUG(10,("ace->uid = %d\n",ace->uid));
158 ace->a_perm = file_acl->g_access << 6;
159 ace->a_type = SMB_ACL_GROUP_OBJ;
163 ace->a_perm = file_acl->o_access << 6;
164 ace->a_type = SMB_ACL_OTHER;
168 ace->a_perm = file_acl->u_access << 6;
169 ace->a_type = SMB_ACL_USER_OBJ;
176 ace->a_perm |= ((ace->a_perm & S_IRUSR) ? SMB_ACL_READ : 0);
177 ace->a_perm |= ((ace->a_perm & S_IWUSR) ? SMB_ACL_WRITE : 0);
178 ace->a_perm |= ((ace->a_perm & S_IXUSR) ? SMB_ACL_EXECUTE : 0);
180 memcpy(&result->acl[result->count],ace,sizeof(struct smb_acl_entry));
182 DEBUG(10,("ace->a_perm = %d\n",ace->a_perm));
183 DEBUG(10,("ace->a_type = %d\n",ace->a_type));
192 static ushort aixacl_smb_to_aixperm(SMB_ACL_PERM_T a_perm)
194 ushort ret = (ushort)0;
195 if (a_perm & SMB_ACL_READ)
197 if (a_perm & SMB_ACL_WRITE)
199 if (a_perm & SMB_ACL_EXECUTE)
204 struct acl *aixacl_smb_to_aixacl(SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl)
206 struct smb_acl_entry *smb_entry = NULL;
207 struct acl *file_acl = NULL;
208 struct acl *file_acl_temp = NULL;
209 struct acl_entry *acl_entry = NULL;
210 struct ace_id *ace_id = NULL;
211 unsigned int id_type;
212 unsigned int acl_length;
215 DEBUG(10,("Entering aixacl_smb_to_aixacl\n"));
216 /* AIX has no default ACL */
217 if(acltype == SMB_ACL_TYPE_DEFAULT)
221 file_acl = (struct acl *)SMB_MALLOC(BUFSIZ);
222 if(file_acl == NULL) {
224 DEBUG(0,("Error in aixacl_smb_to_aixacl is %d\n",errno));
228 memset(file_acl,0,BUFSIZ);
230 file_acl->acl_len = ACL_SIZ;
231 file_acl->acl_mode = S_IXACL;
233 for(i=0; i<theacl->count; i++ ) {
234 smb_entry = &(theacl->acl[i]);
235 id_type = smb_entry->a_type;
236 DEBUG(10,("The id_type is %d\n",id_type));
239 case SMB_ACL_USER_OBJ:
240 file_acl->u_access = aixacl_smb_to_aixperm(smb_entry->a_perm);
242 case SMB_ACL_GROUP_OBJ:
243 file_acl->g_access = aixacl_smb_to_aixperm(smb_entry->a_perm);
246 file_acl->o_access = aixacl_smb_to_aixperm(smb_entry->a_perm);
251 break; /* process this */
253 break; /* process this */
254 default: /* abnormal case */
255 DEBUG(10,("The id_type is unknown !\n"));
259 if((file_acl->acl_len + sizeof(struct acl_entry)) > acl_length) {
260 acl_length += sizeof(struct acl_entry);
261 file_acl_temp = (struct acl *)SMB_MALLOC(acl_length);
262 if(file_acl_temp == NULL) {
265 DEBUG(0,("Error in aixacl_smb_to_aixacl is %d\n",errno));
269 memcpy(file_acl_temp,file_acl,file_acl->acl_len);
271 file_acl = file_acl_temp;
274 acl_entry = (struct acl_entry *)((char *)file_acl + file_acl->acl_len);
275 file_acl->acl_len += sizeof(struct acl_entry);
276 acl_entry->ace_len = sizeof(struct acl_entry); /* contains 1 ace_id */
277 acl_entry->ace_access = aixacl_smb_to_aixperm(smb_entry->a_perm);
279 /* In order to use this, we'll need to wait until we can get denies */
280 /* if(!acl_entry->ace_access && acl_entry->ace_type == ACC_PERMIT)
281 acl_entry->ace_type = ACC_SPECIFY; */
283 acl_entry->ace_type = ACC_SPECIFY;
285 ace_id = acl_entry->ace_id;
287 ace_id->id_type = (smb_entry->a_type==SMB_ACL_GROUP) ? ACEID_GROUP : ACEID_USER;
288 DEBUG(10,("The id type is %d\n",ace_id->id_type));
289 ace_id->id_len = sizeof(struct ace_id); /* contains 1 id_data */
290 ace_id->id_data[0] = (smb_entry->a_type==SMB_ACL_GROUP) ? smb_entry->gid : smb_entry->uid;