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Steve Frenchbcb02032007-09-25 16:17:24 +00001/*
2 * fs/cifs/cifsacl.c
3 *
4 * Copyright (C) International Business Machines Corp., 2007
5 * Author(s): Steve French (sfrench@us.ibm.com)
6 *
7 * Contains the routines for mapping CIFS/NTFS ACLs
8 *
9 * This library is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU Lesser General Public License as published
11 * by the Free Software Foundation; either version 2.1 of the License, or
12 * (at your option) any later version.
13 *
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
17 * the GNU Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public License
20 * along with this library; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 */
23
Steve French65874002007-09-25 19:53:44 +000024#include <linux/fs.h>
25#include "cifspdu.h"
26#include "cifsglob.h"
Shirish Pargaonkard0d66c42007-10-03 18:22:19 +000027#include "cifsacl.h"
Steve French65874002007-09-25 19:53:44 +000028#include "cifsproto.h"
29#include "cifs_debug.h"
Steve French65874002007-09-25 19:53:44 +000030
Steve French297647c2007-10-12 04:11:59 +000031
32#ifdef CONFIG_CIFS_EXPERIMENTAL
33
Steve Frenchaf6f4612007-10-16 18:40:37 +000034static struct cifs_wksid wksidarr[NUM_WK_SIDS] = {
Steve French297647c2007-10-12 04:11:59 +000035 {{1, 0, {0, 0, 0, 0, 0, 0}, {0, 0, 0, 0, 0} }, "null user"},
36 {{1, 1, {0, 0, 0, 0, 0, 1}, {0, 0, 0, 0, 0} }, "nobody"},
Dave Kleikampce51ae12007-10-16 21:35:39 +000037 {{1, 1, {0, 0, 0, 0, 0, 5}, {cpu_to_le32(11), 0, 0, 0, 0} }, "net-users"},
38 {{1, 1, {0, 0, 0, 0, 0, 5}, {cpu_to_le32(18), 0, 0, 0, 0} }, "sys"},
39 {{1, 2, {0, 0, 0, 0, 0, 5}, {cpu_to_le32(32), cpu_to_le32(544), 0, 0, 0} }, "root"},
40 {{1, 2, {0, 0, 0, 0, 0, 5}, {cpu_to_le32(32), cpu_to_le32(545), 0, 0, 0} }, "users"},
Steve French44093ca2007-10-23 21:22:55 +000041 {{1, 2, {0, 0, 0, 0, 0, 5}, {cpu_to_le32(32), cpu_to_le32(546), 0, 0, 0} }, "guest"} }
42;
Steve French297647c2007-10-12 04:11:59 +000043
44
Steve Frenchbcb02032007-09-25 16:17:24 +000045/* security id for everyone */
Shirish Pargaonkare01b6402007-10-30 04:45:14 +000046static const struct cifs_sid sid_everyone = {
47 1, 1, {0, 0, 0, 0, 0, 1}, {0} };
Steve Frenchbcb02032007-09-25 16:17:24 +000048/* group users */
49static const struct cifs_sid sid_user =
Steve Frenchd12fd122007-10-03 19:43:19 +000050 {1, 2 , {0, 0, 0, 0, 0, 5}, {} };
Shirish Pargaonkard0d66c42007-10-03 18:22:19 +000051
Steve French297647c2007-10-12 04:11:59 +000052
53int match_sid(struct cifs_sid *ctsid)
54{
55 int i, j;
56 int num_subauth, num_sat, num_saw;
57 struct cifs_sid *cwsid;
58
59 if (!ctsid)
60 return (-1);
61
62 for (i = 0; i < NUM_WK_SIDS; ++i) {
63 cwsid = &(wksidarr[i].cifssid);
64
65 /* compare the revision */
66 if (ctsid->revision != cwsid->revision)
67 continue;
68
69 /* compare all of the six auth values */
70 for (j = 0; j < 6; ++j) {
71 if (ctsid->authority[j] != cwsid->authority[j])
72 break;
73 }
74 if (j < 6)
75 continue; /* all of the auth values did not match */
76
77 /* compare all of the subauth values if any */
Dave Kleikampce51ae12007-10-16 21:35:39 +000078 num_sat = ctsid->num_subauth;
79 num_saw = cwsid->num_subauth;
Steve French297647c2007-10-12 04:11:59 +000080 num_subauth = num_sat < num_saw ? num_sat : num_saw;
81 if (num_subauth) {
82 for (j = 0; j < num_subauth; ++j) {
83 if (ctsid->sub_auth[j] != cwsid->sub_auth[j])
84 break;
85 }
86 if (j < num_subauth)
87 continue; /* all sub_auth values do not match */
88 }
89
90 cFYI(1, ("matching sid: %s\n", wksidarr[i].sidname));
91 return (0); /* sids compare/match */
92 }
93
94 cFYI(1, ("No matching sid"));
95 return (-1);
96}
97
Steve Frencha750e772007-10-17 22:50:39 +000098/* if the two SIDs (roughly equivalent to a UUID for a user or group) are
99 the same returns 1, if they do not match returns 0 */
Steve French630f3f0c2007-10-25 21:17:17 +0000100int compare_sids(const struct cifs_sid *ctsid, const struct cifs_sid *cwsid)
Steve French297647c2007-10-12 04:11:59 +0000101{
102 int i;
103 int num_subauth, num_sat, num_saw;
104
105 if ((!ctsid) || (!cwsid))
Steve Frencha750e772007-10-17 22:50:39 +0000106 return (0);
Steve French297647c2007-10-12 04:11:59 +0000107
108 /* compare the revision */
109 if (ctsid->revision != cwsid->revision)
Steve Frencha750e772007-10-17 22:50:39 +0000110 return (0);
Steve French297647c2007-10-12 04:11:59 +0000111
112 /* compare all of the six auth values */
113 for (i = 0; i < 6; ++i) {
114 if (ctsid->authority[i] != cwsid->authority[i])
Steve Frencha750e772007-10-17 22:50:39 +0000115 return (0);
Steve French297647c2007-10-12 04:11:59 +0000116 }
117
118 /* compare all of the subauth values if any */
Steve Frenchadbc0352007-10-17 02:12:46 +0000119 num_sat = ctsid->num_subauth;
Steve Frenchadddd492007-10-17 02:48:17 +0000120 num_saw = cwsid->num_subauth;
Steve French297647c2007-10-12 04:11:59 +0000121 num_subauth = num_sat < num_saw ? num_sat : num_saw;
122 if (num_subauth) {
123 for (i = 0; i < num_subauth; ++i) {
124 if (ctsid->sub_auth[i] != cwsid->sub_auth[i])
Steve Frencha750e772007-10-17 22:50:39 +0000125 return (0);
Steve French297647c2007-10-12 04:11:59 +0000126 }
127 }
128
Steve Frencha750e772007-10-17 22:50:39 +0000129 return (1); /* sids compare/match */
Steve French297647c2007-10-12 04:11:59 +0000130}
131
Steve French630f3f0c2007-10-25 21:17:17 +0000132/*
133 change posix mode to reflect permissions
134 pmode is the existing mode (we only want to overwrite part of this
135 bits to set can be: S_IRWXU, S_IRWXG or S_IRWXO ie 00700 or 00070 or 00007
136*/
Steve Frenchd61e5802007-10-26 04:32:43 +0000137static void access_flags_to_mode(__u32 ace_flags, umode_t *pmode,
Steve French630f3f0c2007-10-25 21:17:17 +0000138 umode_t bits_to_set)
Steve French4879b442007-10-19 21:57:39 +0000139{
Steve French44093ca2007-10-23 21:22:55 +0000140
Steve Frenchd61e5802007-10-26 04:32:43 +0000141 if (ace_flags & GENERIC_ALL) {
142 *pmode |= (S_IRWXUGO & bits_to_set);
143#ifdef CONFIG_CIFS_DEBUG2
144 cFYI(1, ("all perms"));
145#endif
146 return;
147 }
Shirish Pargaonkare01b6402007-10-30 04:45:14 +0000148 if ((ace_flags & GENERIC_WRITE) ||
149 ((ace_flags & FILE_WRITE_RIGHTS) == FILE_WRITE_RIGHTS))
Steve Frenchd61e5802007-10-26 04:32:43 +0000150 *pmode |= (S_IWUGO & bits_to_set);
Shirish Pargaonkare01b6402007-10-30 04:45:14 +0000151 if ((ace_flags & GENERIC_READ) ||
152 ((ace_flags & FILE_READ_RIGHTS) == FILE_READ_RIGHTS))
Steve Frenchd61e5802007-10-26 04:32:43 +0000153 *pmode |= (S_IRUGO & bits_to_set);
Shirish Pargaonkare01b6402007-10-30 04:45:14 +0000154 if ((ace_flags & GENERIC_EXECUTE) ||
155 ((ace_flags & FILE_EXEC_RIGHTS) == FILE_EXEC_RIGHTS))
Steve Frenchd61e5802007-10-26 04:32:43 +0000156 *pmode |= (S_IXUGO & bits_to_set);
157
158#ifdef CONFIG_CIFS_DEBUG2
Steve Frenchb9c7a2b2007-10-26 23:40:20 +0000159 cFYI(1, ("access flags 0x%x mode now 0x%x", ace_flags, *pmode));
Steve Frenchd61e5802007-10-26 04:32:43 +0000160#endif
Steve French630f3f0c2007-10-25 21:17:17 +0000161 return;
162}
163
Steve French297647c2007-10-12 04:11:59 +0000164
Steve French953f8682007-10-31 04:54:42 +0000165#ifdef CONFIG_CIFS_DEBUG2
166static void dump_ace(struct cifs_ace *pace, char *end_of_acl)
Shirish Pargaonkard0d66c42007-10-03 18:22:19 +0000167{
Shirish Pargaonkard0d66c42007-10-03 18:22:19 +0000168 int num_subauth;
Shirish Pargaonkard0d66c42007-10-03 18:22:19 +0000169
170 /* validate that we do not go past end of acl */
Steve French297647c2007-10-12 04:11:59 +0000171
Steve French44093ca2007-10-23 21:22:55 +0000172 if (le16_to_cpu(pace->size) < 16) {
173 cERROR(1, ("ACE too small, %d", le16_to_cpu(pace->size)));
174 return;
175 }
176
177 if (end_of_acl < (char *)pace + le16_to_cpu(pace->size)) {
Shirish Pargaonkard0d66c42007-10-03 18:22:19 +0000178 cERROR(1, ("ACL too small to parse ACE"));
179 return;
Steve French44093ca2007-10-23 21:22:55 +0000180 }
Shirish Pargaonkard0d66c42007-10-03 18:22:19 +0000181
Steve French44093ca2007-10-23 21:22:55 +0000182 num_subauth = pace->sid.num_subauth;
Shirish Pargaonkard0d66c42007-10-03 18:22:19 +0000183 if (num_subauth) {
Steve French8f18c132007-10-12 18:54:12 +0000184 int i;
Steve French44093ca2007-10-23 21:22:55 +0000185 cFYI(1, ("ACE revision %d num_auth %d type %d flags %d size %d",
186 pace->sid.revision, pace->sid.num_subauth, pace->type,
187 pace->flags, pace->size));
Steve Frenchd12fd122007-10-03 19:43:19 +0000188 for (i = 0; i < num_subauth; ++i) {
189 cFYI(1, ("ACE sub_auth[%d]: 0x%x", i,
Steve French44093ca2007-10-23 21:22:55 +0000190 le32_to_cpu(pace->sid.sub_auth[i])));
Steve Frenchd12fd122007-10-03 19:43:19 +0000191 }
Shirish Pargaonkard0d66c42007-10-03 18:22:19 +0000192
Steve Frenchd12fd122007-10-03 19:43:19 +0000193 /* BB add length check to make sure that we do not have huge
194 num auths and therefore go off the end */
Steve Frenchd12fd122007-10-03 19:43:19 +0000195 }
Shirish Pargaonkard0d66c42007-10-03 18:22:19 +0000196
Steve Frenchd12fd122007-10-03 19:43:19 +0000197 return;
198}
Steve French953f8682007-10-31 04:54:42 +0000199#endif
Shirish Pargaonkard0d66c42007-10-03 18:22:19 +0000200
Shirish Pargaonkard0d66c42007-10-03 18:22:19 +0000201
Steve Frencha750e772007-10-17 22:50:39 +0000202static void parse_dacl(struct cifs_acl *pdacl, char *end_of_acl,
Steve Frenchd61e5802007-10-26 04:32:43 +0000203 struct cifs_sid *pownersid, struct cifs_sid *pgrpsid,
Steve French630f3f0c2007-10-25 21:17:17 +0000204 struct inode *inode)
Shirish Pargaonkard0d66c42007-10-03 18:22:19 +0000205{
206 int i;
207 int num_aces = 0;
208 int acl_size;
209 char *acl_base;
Shirish Pargaonkard0d66c42007-10-03 18:22:19 +0000210 struct cifs_ace **ppace;
211
212 /* BB need to add parm so we can store the SID BB */
213
214 /* validate that we do not go past end of acl */
Steve Frenchaf6f4612007-10-16 18:40:37 +0000215 if (end_of_acl < (char *)pdacl + le16_to_cpu(pdacl->size)) {
Shirish Pargaonkard0d66c42007-10-03 18:22:19 +0000216 cERROR(1, ("ACL too small to parse DACL"));
217 return;
218 }
219
220#ifdef CONFIG_CIFS_DEBUG2
221 cFYI(1, ("DACL revision %d size %d num aces %d",
Steve Frenchaf6f4612007-10-16 18:40:37 +0000222 le16_to_cpu(pdacl->revision), le16_to_cpu(pdacl->size),
223 le32_to_cpu(pdacl->num_aces)));
Shirish Pargaonkard0d66c42007-10-03 18:22:19 +0000224#endif
225
226 acl_base = (char *)pdacl;
227 acl_size = sizeof(struct cifs_acl);
228
Steve Frenchadbc0352007-10-17 02:12:46 +0000229 num_aces = le32_to_cpu(pdacl->num_aces);
Shirish Pargaonkard0d66c42007-10-03 18:22:19 +0000230 if (num_aces > 0) {
Shirish Pargaonkard0d66c42007-10-03 18:22:19 +0000231 ppace = kmalloc(num_aces * sizeof(struct cifs_ace *),
232 GFP_KERNEL);
233
Steve Frenchd12fd122007-10-03 19:43:19 +0000234/* cifscred->cecount = pdacl->num_aces;
Steve Frenchd12fd122007-10-03 19:43:19 +0000235 cifscred->aces = kmalloc(num_aces *
236 sizeof(struct cifs_ace *), GFP_KERNEL);*/
Shirish Pargaonkard0d66c42007-10-03 18:22:19 +0000237
Shirish Pargaonkare01b6402007-10-30 04:45:14 +0000238 /* reset rwx permissions for user/group/other */
239 inode->i_mode &= ~(S_IRWXUGO);
240
Shirish Pargaonkard0d66c42007-10-03 18:22:19 +0000241 for (i = 0; i < num_aces; ++i) {
Steve French44093ca2007-10-23 21:22:55 +0000242 ppace[i] = (struct cifs_ace *) (acl_base + acl_size);
Steve French953f8682007-10-31 04:54:42 +0000243#ifdef CONFIG_CIFS_DEBUG2
244 dump_ace(ppace[i], end_of_acl);
245#endif
Shirish Pargaonkare01b6402007-10-30 04:45:14 +0000246 if (compare_sids(&(ppace[i]->sid), pownersid))
247 access_flags_to_mode(ppace[i]->access_req,
248 &(inode->i_mode), S_IRWXU);
249 if (compare_sids(&(ppace[i]->sid), pgrpsid))
250 access_flags_to_mode(ppace[i]->access_req,
251 &(inode->i_mode), S_IRWXG);
252 if (compare_sids(&(ppace[i]->sid), &sid_everyone))
253 access_flags_to_mode(ppace[i]->access_req,
254 &(inode->i_mode), S_IRWXO);
255
Steve French44093ca2007-10-23 21:22:55 +0000256/* memcpy((void *)(&(cifscred->aces[i])),
Steve Frenchd12fd122007-10-03 19:43:19 +0000257 (void *)ppace[i],
258 sizeof(struct cifs_ace)); */
Shirish Pargaonkard0d66c42007-10-03 18:22:19 +0000259
Steve French44093ca2007-10-23 21:22:55 +0000260 acl_base = (char *)ppace[i];
261 acl_size = le16_to_cpu(ppace[i]->size);
Shirish Pargaonkard0d66c42007-10-03 18:22:19 +0000262 }
263
264 kfree(ppace);
Shirish Pargaonkard0d66c42007-10-03 18:22:19 +0000265 }
266
267 return;
268}
269
Steve Frenchbcb02032007-09-25 16:17:24 +0000270
271static int parse_sid(struct cifs_sid *psid, char *end_of_acl)
272{
273 /* BB need to add parm so we can store the SID BB */
274
Steve Frenchb9c7a2b2007-10-26 23:40:20 +0000275 /* validate that we do not go past end of ACL - sid must be at least 8
276 bytes long (assuming no sub-auths - e.g. the null SID */
277 if (end_of_acl < (char *)psid + 8) {
278 cERROR(1, ("ACL too small to parse SID %p", psid));
Steve Frenchbcb02032007-09-25 16:17:24 +0000279 return -EINVAL;
280 }
Steve Frenchbcb02032007-09-25 16:17:24 +0000281
Steve Frenchaf6f4612007-10-16 18:40:37 +0000282 if (psid->num_subauth) {
Shirish Pargaonkard0d66c42007-10-03 18:22:19 +0000283#ifdef CONFIG_CIFS_DEBUG2
Steve French8f18c132007-10-12 18:54:12 +0000284 int i;
Steve French44093ca2007-10-23 21:22:55 +0000285 cFYI(1, ("SID revision %d num_auth %d",
286 psid->revision, psid->num_subauth));
Shirish Pargaonkard0d66c42007-10-03 18:22:19 +0000287
Steve Frenchaf6f4612007-10-16 18:40:37 +0000288 for (i = 0; i < psid->num_subauth; i++) {
Shirish Pargaonkard0d66c42007-10-03 18:22:19 +0000289 cFYI(1, ("SID sub_auth[%d]: 0x%x ", i,
Steve French297647c2007-10-12 04:11:59 +0000290 le32_to_cpu(psid->sub_auth[i])));
Shirish Pargaonkard0d66c42007-10-03 18:22:19 +0000291 }
292
Steve Frenchd12fd122007-10-03 19:43:19 +0000293 /* BB add length check to make sure that we do not have huge
Shirish Pargaonkard0d66c42007-10-03 18:22:19 +0000294 num auths and therefore go off the end */
Steve Frenchd12fd122007-10-03 19:43:19 +0000295 cFYI(1, ("RID 0x%x",
Steve Frenchaf6f4612007-10-16 18:40:37 +0000296 le32_to_cpu(psid->sub_auth[psid->num_subauth-1])));
Steve Frenchbcb02032007-09-25 16:17:24 +0000297#endif
Shirish Pargaonkard0d66c42007-10-03 18:22:19 +0000298 }
299
Steve Frenchbcb02032007-09-25 16:17:24 +0000300 return 0;
301}
302
Shirish Pargaonkard0d66c42007-10-03 18:22:19 +0000303
Steve Frenchbcb02032007-09-25 16:17:24 +0000304/* Convert CIFS ACL to POSIX form */
Steve French630f3f0c2007-10-25 21:17:17 +0000305static int parse_sec_desc(struct cifs_ntsd *pntsd, int acl_len,
306 struct inode *inode)
Steve Frenchbcb02032007-09-25 16:17:24 +0000307{
Shirish Pargaonkard0d66c42007-10-03 18:22:19 +0000308 int rc;
Steve Frenchbcb02032007-09-25 16:17:24 +0000309 struct cifs_sid *owner_sid_ptr, *group_sid_ptr;
310 struct cifs_acl *dacl_ptr; /* no need for SACL ptr */
Steve Frenchbcb02032007-09-25 16:17:24 +0000311 char *end_of_acl = ((char *)pntsd) + acl_len;
312
Steve Frenchb9c7a2b2007-10-26 23:40:20 +0000313 if ((inode == NULL) || (pntsd == NULL))
314 return -EIO;
315
Steve Frenchbcb02032007-09-25 16:17:24 +0000316 owner_sid_ptr = (struct cifs_sid *)((char *)pntsd +
Steve Frenchaf6f4612007-10-16 18:40:37 +0000317 le32_to_cpu(pntsd->osidoffset));
Steve Frenchbcb02032007-09-25 16:17:24 +0000318 group_sid_ptr = (struct cifs_sid *)((char *)pntsd +
Steve Frenchaf6f4612007-10-16 18:40:37 +0000319 le32_to_cpu(pntsd->gsidoffset));
Steve Frenchbcb02032007-09-25 16:17:24 +0000320 dacl_ptr = (struct cifs_acl *)((char *)pntsd +
Steve Frenchaf6f4612007-10-16 18:40:37 +0000321 le32_to_cpu(pntsd->dacloffset));
Steve Frenchbcb02032007-09-25 16:17:24 +0000322#ifdef CONFIG_CIFS_DEBUG2
323 cFYI(1, ("revision %d type 0x%x ooffset 0x%x goffset 0x%x "
324 "sacloffset 0x%x dacloffset 0x%x",
Steve Frenchaf6f4612007-10-16 18:40:37 +0000325 pntsd->revision, pntsd->type, le32_to_cpu(pntsd->osidoffset),
326 le32_to_cpu(pntsd->gsidoffset),
327 le32_to_cpu(pntsd->sacloffset),
Dave Kleikampce51ae12007-10-16 21:35:39 +0000328 le32_to_cpu(pntsd->dacloffset)));
Steve Frenchbcb02032007-09-25 16:17:24 +0000329#endif
Steve Frenchb9c7a2b2007-10-26 23:40:20 +0000330/* cifs_dump_mem("owner_sid: ", owner_sid_ptr, 64); */
Steve Frenchbcb02032007-09-25 16:17:24 +0000331 rc = parse_sid(owner_sid_ptr, end_of_acl);
332 if (rc)
333 return rc;
334
335 rc = parse_sid(group_sid_ptr, end_of_acl);
336 if (rc)
337 return rc;
338
Steve French630f3f0c2007-10-25 21:17:17 +0000339 parse_dacl(dacl_ptr, end_of_acl, owner_sid_ptr, group_sid_ptr, inode);
Shirish Pargaonkard0d66c42007-10-03 18:22:19 +0000340
Steve Frenchbcb02032007-09-25 16:17:24 +0000341/* cifscred->uid = owner_sid_ptr->rid;
342 cifscred->gid = group_sid_ptr->rid;
343 memcpy((void *)(&(cifscred->osid)), (void *)owner_sid_ptr,
Steve French630f3f0c2007-10-25 21:17:17 +0000344 sizeof(struct cifs_sid));
Steve Frenchbcb02032007-09-25 16:17:24 +0000345 memcpy((void *)(&(cifscred->gsid)), (void *)group_sid_ptr,
Steve French630f3f0c2007-10-25 21:17:17 +0000346 sizeof(struct cifs_sid)); */
Steve Frenchbcb02032007-09-25 16:17:24 +0000347
Steve French297647c2007-10-12 04:11:59 +0000348
Steve Frenchbcb02032007-09-25 16:17:24 +0000349 return (0);
350}
Steve Frenchb9c7a2b2007-10-26 23:40:20 +0000351
352
353/* Translate the CIFS ACL (simlar to NTFS ACL) for a file into mode bits */
354
355void acl_to_uid_mode(struct inode *inode, const char *path)
356{
357 struct cifsFileInfo *open_file;
358 int unlock_file = FALSE;
359 int xid;
360 int rc = -EIO;
361 __u16 fid;
362 struct super_block *sb;
363 struct cifs_sb_info *cifs_sb;
364 struct cifs_ntsd *pntsd = NULL;
365 __u32 acllen;
366
367 cFYI(1, ("get mode from ACL for %s", path));
368
369 if (inode == NULL)
370 return;
371
372 xid = GetXid();
373 open_file = find_readable_file(CIFS_I(inode));
374 sb = inode->i_sb;
375 if (sb == NULL) {
376 FreeXid(xid);
377 return;
378 }
379 cifs_sb = CIFS_SB(sb);
380
381 if (open_file) {
382 unlock_file = TRUE;
383 fid = open_file->netfid;
384 } else {
385 int oplock = FALSE;
386 /* open file */
387 rc = CIFSSMBOpen(xid, cifs_sb->tcon, path, FILE_OPEN,
Steve French953f8682007-10-31 04:54:42 +0000388 READ_CONTROL, 0, &fid, &oplock, NULL,
Steve Frenchb9c7a2b2007-10-26 23:40:20 +0000389 cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
390 CIFS_MOUNT_MAP_SPECIAL_CHR);
391 if (rc != 0) {
392 cERROR(1, ("Unable to open file to get ACL"));
393 FreeXid(xid);
394 return;
395 }
396 }
397
398 rc = CIFSSMBGetCIFSACL(xid, cifs_sb->tcon, fid, &pntsd, &acllen);
399 cFYI(1, ("GetCIFSACL rc = %d ACL len %d", rc, acllen));
400 if (unlock_file == TRUE)
401 atomic_dec(&open_file->wrtPending);
402 else
403 CIFSSMBClose(xid, cifs_sb->tcon, fid);
404
405 /* parse ACEs */
406 if (!rc)
407 rc = parse_sec_desc(pntsd, acllen, inode);
408 kfree(pntsd);
409 FreeXid(xid);
410 return;
411}
Steve French953f8682007-10-31 04:54:42 +0000412
413int mode_to_acl(struct inode *inode, const char *path)
414{
415 int rc = 0;
416 __u32 acllen = 0;
417 struct cifs_ntsd *pntsd = NULL;
418
419 cFYI(1, ("set ACL from mode for %s", path));
420
421 /* Get the security descriptor */
422
423 /* Add/Modify the three ACEs for owner, group, everyone */
424
425 /* Set the security descriptor */
426 kfree(pntsd);
427
428 return rc;
429}
Steve French297647c2007-10-12 04:11:59 +0000430#endif /* CONFIG_CIFS_EXPERIMENTAL */