5 |
* |
* |
6 |
* Copyright (C) 2005-2008 NTT DATA CORPORATION |
* Copyright (C) 2005-2008 NTT DATA CORPORATION |
7 |
* |
* |
8 |
* Version: 1.6.0-pre 2008/03/11 |
* Version: 1.6.0-pre 2008/03/24 |
9 |
* |
* |
10 |
* This file is applicable to both 2.4.30 and 2.6.11 and later. |
* This file is applicable to both 2.4.30 and 2.6.11 and later. |
11 |
* See README.ccs for ChangeLog. |
* See README.ccs for ChangeLog. |
12 |
* |
* |
13 |
*/ |
*/ |
|
/***** TOMOYO Linux start. *****/ |
|
14 |
|
|
15 |
#include <linux/ccs_common.h> |
#include <linux/ccs_common.h> |
16 |
#include <linux/tomoyo.h> |
#include <linux/tomoyo.h> |
17 |
#include <linux/realpath.h> |
#include <linux/realpath.h> |
18 |
#include <linux/highmem.h> |
#include <linux/highmem.h> |
19 |
#include <linux/binfmts.h> |
#include <linux/binfmts.h> |
20 |
|
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 5, 0) |
21 |
|
#include <linux/namei.h> |
22 |
|
#include <linux/mount.h> |
23 |
|
#endif |
24 |
|
|
25 |
|
/* For compatibility with older kernels. */ |
26 |
#ifndef for_each_process |
#ifndef for_each_process |
27 |
#define for_each_process for_each_task |
#define for_each_process for_each_task |
28 |
#endif |
#endif |
29 |
|
|
30 |
/************************* VARIABLES *************************/ |
/* Variables definitions.*/ |
31 |
|
|
32 |
/* The initial domain. */ |
/* The initial domain. */ |
33 |
struct domain_info KERNEL_DOMAIN; |
struct domain_info KERNEL_DOMAIN; |
34 |
|
|
35 |
/* List of domains. */ |
/* The list for "struct domain_info". */ |
36 |
LIST1_HEAD(domain_list); |
LIST1_HEAD(domain_list); |
37 |
|
|
38 |
#ifdef CONFIG_TOMOYO |
#ifdef CONFIG_TOMOYO |
40 |
/* Lock for appending domain's ACL. */ |
/* Lock for appending domain's ACL. */ |
41 |
DEFINE_MUTEX(domain_acl_lock); |
DEFINE_MUTEX(domain_acl_lock); |
42 |
|
|
43 |
/************************* UTILITY FUNCTIONS *************************/ |
/* Domain creation lock. */ |
44 |
|
static DEFINE_MUTEX(new_domain_assign_lock); |
|
/***** The structure for program files to force domain reconstruction. *****/ |
|
45 |
|
|
46 |
|
/* Structure for "initialize_domain" and "no_initialize_domain" keyword. */ |
47 |
struct domain_initializer_entry { |
struct domain_initializer_entry { |
48 |
struct list1_head list; |
struct list1_head list; |
49 |
const struct path_info *domainname; /* This may be NULL */ |
const struct path_info *domainname; /* This may be NULL */ |
50 |
const struct path_info *program; |
const struct path_info *program; |
51 |
bool is_deleted; |
bool is_deleted; |
52 |
bool is_not; |
bool is_not; /* True if this entry is "no_initialize_domain". */ |
53 |
bool is_last_name; |
bool is_last_name; /* True if the domainname is ccs_get_last_name(). */ |
54 |
}; |
}; |
55 |
|
|
56 |
/***** The structure for domains to not to transit domains. *****/ |
/* Structure for "keep_domain" and "no_keep_domain" keyword. */ |
|
|
|
57 |
struct domain_keeper_entry { |
struct domain_keeper_entry { |
58 |
struct list1_head list; |
struct list1_head list; |
59 |
const struct path_info *domainname; |
const struct path_info *domainname; |
60 |
const struct path_info *program; /* This may be NULL */ |
const struct path_info *program; /* This may be NULL */ |
61 |
bool is_deleted; |
bool is_deleted; |
62 |
bool is_not; |
bool is_not; /* True if this entry is "no_keep_domain". */ |
63 |
bool is_last_name; |
bool is_last_name; /* True if the domainname is ccs_get_last_name(). */ |
64 |
}; |
}; |
65 |
|
|
66 |
/***** The structure for program files that should be aggregated. *****/ |
/* Structure for "aggregator" keyword. */ |
|
|
|
67 |
struct aggregator_entry { |
struct aggregator_entry { |
68 |
struct list1_head list; |
struct list1_head list; |
69 |
const struct path_info *original_name; |
const struct path_info *original_name; |
71 |
bool is_deleted; |
bool is_deleted; |
72 |
}; |
}; |
73 |
|
|
74 |
/***** The structure for program files that should be aliased. *****/ |
/* Structure for "alias" keyword. */ |
|
|
|
75 |
struct alias_entry { |
struct alias_entry { |
76 |
struct list1_head list; |
struct list1_head list; |
77 |
const struct path_info *original_name; |
const struct path_info *original_name; |
79 |
bool is_deleted; |
bool is_deleted; |
80 |
}; |
}; |
81 |
|
|
82 |
/************************* VARIABLES *************************/ |
/** |
83 |
|
* ccs_set_domain_flag - Set or clear domain's attribute flags. |
84 |
/* Domain creation lock. */ |
* |
85 |
static DEFINE_MUTEX(new_domain_assign_lock); |
* @domain: Pointer to "struct domain_info". |
86 |
|
* @is_delete: True if it is a delete request. |
87 |
/************************* UTILITY FUNCTIONS *************************/ |
* @flags: Flags to set or clear. |
88 |
|
* |
89 |
void SetDomainFlag(struct domain_info *domain, const bool is_delete, const u8 flags) |
* Returns nothing. |
90 |
|
*/ |
91 |
|
void ccs_set_domain_flag(struct domain_info *domain, const bool is_delete, |
92 |
|
const u8 flags) |
93 |
{ |
{ |
94 |
mutex_lock(&new_domain_assign_lock); |
mutex_lock(&new_domain_assign_lock); |
95 |
if (!is_delete) domain->flags |= flags; |
if (!is_delete) |
96 |
else domain->flags &= ~flags; |
domain->flags |= flags; |
97 |
|
else |
98 |
|
domain->flags &= ~flags; |
99 |
mutex_unlock(&new_domain_assign_lock); |
mutex_unlock(&new_domain_assign_lock); |
100 |
} |
} |
101 |
|
|
102 |
const char *GetLastName(const struct domain_info *domain) |
/** |
103 |
|
* ccs_get_last_name - Get last component of a domainname. |
104 |
|
* |
105 |
|
* @domain: Pointer to "struct domain_info". |
106 |
|
* |
107 |
|
* Returns the last component of the domainname. |
108 |
|
*/ |
109 |
|
const char *ccs_get_last_name(const struct domain_info *domain) |
110 |
{ |
{ |
111 |
const char *cp0 = domain->domainname->name, *cp1; |
const char *cp0 = domain->domainname->name, *cp1 = strrchr(cp0, ' '); |
112 |
if ((cp1 = strrchr(cp0, ' ')) != NULL) return cp1 + 1; |
if (cp1) |
113 |
|
return cp1 + 1; |
114 |
return cp0; |
return cp0; |
115 |
} |
} |
116 |
|
|
117 |
int AddDomainACL(struct domain_info *domain, struct acl_info *acl) |
/** |
118 |
|
* ccs_add_domain_acl - Add the given ACL to the given domain. |
119 |
|
* |
120 |
|
* @domain: Pointer to "struct domain_info". |
121 |
|
* @acl: Pointer to "struct acl_info". |
122 |
|
* |
123 |
|
* Returns 0. |
124 |
|
*/ |
125 |
|
int ccs_add_domain_acl(struct domain_info *domain, struct acl_info *acl) |
126 |
{ |
{ |
127 |
if (domain) list1_add_tail_mb(&acl->list, &domain->acl_info_list); |
if (domain) |
128 |
else acl->type &= ~ACL_DELETED; |
list1_add_tail_mb(&acl->list, &domain->acl_info_list); |
129 |
UpdateCounter(CCS_UPDATES_COUNTER_DOMAIN_POLICY); |
else |
130 |
|
acl->type &= ~ACL_DELETED; |
131 |
|
ccs_update_counter(CCS_UPDATES_COUNTER_DOMAIN_POLICY); |
132 |
return 0; |
return 0; |
133 |
} |
} |
134 |
|
|
135 |
int DelDomainACL(struct acl_info *acl) |
/** |
136 |
|
* ccs_del_domain_acl - Delete the given ACL from the domain. |
137 |
|
* |
138 |
|
* @acl: Pointer to "struct acl_info". |
139 |
|
* |
140 |
|
* Returns 0. |
141 |
|
*/ |
142 |
|
int ccs_del_domain_acl(struct acl_info *acl) |
143 |
{ |
{ |
144 |
if (acl) acl->type |= ACL_DELETED; |
if (acl) |
145 |
UpdateCounter(CCS_UPDATES_COUNTER_DOMAIN_POLICY); |
acl->type |= ACL_DELETED; |
146 |
|
ccs_update_counter(CCS_UPDATES_COUNTER_DOMAIN_POLICY); |
147 |
return 0; |
return 0; |
148 |
} |
} |
149 |
|
|
150 |
/************************* DOMAIN INITIALIZER HANDLER *************************/ |
/** |
151 |
|
* audit_execute_handler_log - Audit execute_handler log. |
152 |
|
* |
153 |
|
* @is_preferred: True if it is "preffered_execute_handler" log. |
154 |
|
* @handler: The realpath of the handler. |
155 |
|
* @bprm: Pointer to "struct linux_binprm". |
156 |
|
* |
157 |
|
* Returns 0 on success, negative value otherwise. |
158 |
|
*/ |
159 |
|
static int audit_execute_handler_log(const bool is_preferred, |
160 |
|
const char *handler, |
161 |
|
struct linux_binprm *bprm) |
162 |
|
{ |
163 |
|
char *buf; |
164 |
|
int len; |
165 |
|
int len2; |
166 |
|
u8 profile; |
167 |
|
u8 mode; |
168 |
|
if (ccs_can_save_audit_log(true) < 0) |
169 |
|
return -ENOMEM; |
170 |
|
len = strlen(handler) + 32; |
171 |
|
profile = current->domain_info->profile; |
172 |
|
mode = ccs_check_flags(CCS_TOMOYO_MAC_FOR_FILE); |
173 |
|
buf = ccs_init_audit_log(&len, profile, mode, bprm); |
174 |
|
if (!buf) |
175 |
|
return -ENOMEM; |
176 |
|
len2 = strlen(buf); |
177 |
|
snprintf(buf + len2, len - len2 - 1, "%s %s\n", |
178 |
|
is_preferred ? |
179 |
|
KEYWORD_PREFERRED_EXECUTE_HANDLER : |
180 |
|
KEYWORD_DEFAULT_EXECUTE_HANDLER, |
181 |
|
handler); |
182 |
|
return ccs_write_audit_log(buf, true); |
183 |
|
} |
184 |
|
|
185 |
|
/** |
186 |
|
* audit_domain_creation_log - Audit domain creation log. |
187 |
|
* |
188 |
|
* @domainname: The name of newly created domain. |
189 |
|
* @mode: Access control mode. |
190 |
|
* @profile: Profile number. |
191 |
|
* |
192 |
|
* Returns 0 on success, negative value otherwise. |
193 |
|
*/ |
194 |
|
static int audit_domain_creation_log(const char *domainname, const u8 mode, |
195 |
|
const u8 profile) |
196 |
|
{ |
197 |
|
char *buf; |
198 |
|
char *cp; |
199 |
|
int len; |
200 |
|
int len2; |
201 |
|
if (ccs_can_save_audit_log(false) < 0) |
202 |
|
return -ENOMEM; |
203 |
|
len = strlen(domainname) + 32; |
204 |
|
buf = ccs_init_audit_log(&len, profile, mode, NULL); |
205 |
|
if (!buf) |
206 |
|
return -ENOMEM; |
207 |
|
cp = strchr(buf, '\n'); |
208 |
|
if (!cp) { |
209 |
|
ccs_free(buf); |
210 |
|
return -ENOMEM; |
211 |
|
} |
212 |
|
*++cp = '\0'; |
213 |
|
len2 = strlen(buf); |
214 |
|
snprintf(buf + len2, len - len2 - 1, "%s\nuse_profile %u\n", |
215 |
|
domainname, profile); |
216 |
|
return ccs_write_audit_log(buf, false); |
217 |
|
} |
218 |
|
|
219 |
|
/* The list for "struct domain_initializer_entry". */ |
220 |
static LIST1_HEAD(domain_initializer_list); |
static LIST1_HEAD(domain_initializer_list); |
221 |
|
|
222 |
static int AddDomainInitializerEntry(const char *domainname, const char *program, const bool is_not, const bool is_delete) |
/** |
223 |
|
* update_domain_initializer_entry - Update "struct domain_initializer_entry" |
224 |
|
* list. |
225 |
|
* |
226 |
|
* @domainname: The name of domain. May be NULL. |
227 |
|
* @program: The name of program. |
228 |
|
* @is_not: True if it is "no_initialize_domain" entry. |
229 |
|
* @is_delete: True if it is a delete request. |
230 |
|
* |
231 |
|
* Returns 0 on success, negative value otherwise. |
232 |
|
*/ |
233 |
|
static int update_domain_initializer_entry(const char *domainname, |
234 |
|
const char *program, |
235 |
|
const bool is_not, |
236 |
|
const bool is_delete) |
237 |
{ |
{ |
238 |
struct domain_initializer_entry *new_entry, *ptr; |
struct domain_initializer_entry *new_entry, *ptr; |
239 |
static DEFINE_MUTEX(lock); |
static DEFINE_MUTEX(lock); |
240 |
const struct path_info *saved_program, *saved_domainname = NULL; |
const struct path_info *saved_program, *saved_domainname = NULL; |
241 |
int error = -ENOMEM; |
int error = -ENOMEM; |
242 |
bool is_last_name = false; |
bool is_last_name = false; |
243 |
if (!IsCorrectPath(program, 1, -1, -1, __FUNCTION__)) return -EINVAL; /* No patterns allowed. */ |
if (!ccs_is_correct_path(program, 1, -1, -1, __func__)) |
244 |
|
return -EINVAL; /* No patterns allowed. */ |
245 |
if (domainname) { |
if (domainname) { |
246 |
if (!IsDomainDef(domainname) && IsCorrectPath(domainname, 1, -1, -1, __FUNCTION__)) { |
if (!ccs_is_domain_def(domainname) && |
247 |
|
ccs_is_correct_path(domainname, 1, -1, -1, __func__)) |
248 |
is_last_name = true; |
is_last_name = true; |
249 |
} else if (!IsCorrectDomain(domainname, __FUNCTION__)) { |
else if (!ccs_is_correct_domain(domainname, __func__)) |
250 |
return -EINVAL; |
return -EINVAL; |
251 |
} |
saved_domainname = ccs_save_name(domainname); |
252 |
if ((saved_domainname = SaveName(domainname)) == NULL) return -ENOMEM; |
if (!saved_domainname) |
253 |
} |
return -ENOMEM; |
254 |
if ((saved_program = SaveName(program)) == NULL) return -ENOMEM; |
} |
255 |
|
saved_program = ccs_save_name(program); |
256 |
|
if (!saved_program) |
257 |
|
return -ENOMEM; |
258 |
mutex_lock(&lock); |
mutex_lock(&lock); |
259 |
list1_for_each_entry(ptr, &domain_initializer_list, list) { |
list1_for_each_entry(ptr, &domain_initializer_list, list) { |
260 |
if (ptr->is_not == is_not && ptr->domainname == saved_domainname && ptr->program == saved_program) { |
if (ptr->is_not != is_not || |
261 |
ptr->is_deleted = is_delete; |
ptr->domainname != saved_domainname || |
262 |
error = 0; |
ptr->program != saved_program) |
263 |
goto out; |
continue; |
264 |
} |
ptr->is_deleted = is_delete; |
265 |
|
error = 0; |
266 |
|
goto out; |
267 |
} |
} |
268 |
if (is_delete) { |
if (is_delete) { |
269 |
error = -ENOENT; |
error = -ENOENT; |
270 |
goto out; |
goto out; |
271 |
} |
} |
272 |
if ((new_entry = alloc_element(sizeof(*new_entry))) == NULL) goto out; |
new_entry = ccs_alloc_element(sizeof(*new_entry)); |
273 |
|
if (!new_entry) |
274 |
|
goto out; |
275 |
new_entry->domainname = saved_domainname; |
new_entry->domainname = saved_domainname; |
276 |
new_entry->program = saved_program; |
new_entry->program = saved_program; |
277 |
new_entry->is_not = is_not; |
new_entry->is_not = is_not; |
283 |
return error; |
return error; |
284 |
} |
} |
285 |
|
|
286 |
int ReadDomainInitializerPolicy(struct io_buffer *head) |
/** |
287 |
|
* ccs_read_domain_initializer_policy - Dump "struct domain_initializer_entry" |
288 |
|
* list. |
289 |
|
* |
290 |
|
* @head: Pointer to "struct ccs_io_buffer". |
291 |
|
* |
292 |
|
* Returns true on success, false otherwise. |
293 |
|
*/ |
294 |
|
bool ccs_read_domain_initializer_policy(struct ccs_io_buffer *head) |
295 |
{ |
{ |
296 |
struct list1_head *pos; |
struct list1_head *pos; |
297 |
list1_for_each_cookie(pos, head->read_var2, &domain_initializer_list) { |
list1_for_each_cookie(pos, head->read_var2, &domain_initializer_list) { |
298 |
struct domain_initializer_entry *ptr; |
struct domain_initializer_entry *ptr; |
299 |
ptr = list1_entry(pos, struct domain_initializer_entry, list); |
ptr = list1_entry(pos, struct domain_initializer_entry, list); |
300 |
if (ptr->is_deleted) continue; |
if (ptr->is_deleted) |
301 |
|
continue; |
302 |
if (ptr->domainname) { |
if (ptr->domainname) { |
303 |
if (io_printf(head, "%s" KEYWORD_INITIALIZE_DOMAIN "%s from %s\n", ptr->is_not ? "no_" : "", ptr->program->name, ptr->domainname->name)) return -ENOMEM; |
if (!ccs_io_printf(head, "%s" KEYWORD_INITIALIZE_DOMAIN |
304 |
|
"%s from %s\n", |
305 |
|
ptr->is_not ? "no_" : "", |
306 |
|
ptr->program->name, |
307 |
|
ptr->domainname->name)) |
308 |
|
goto out; |
309 |
} else { |
} else { |
310 |
if (io_printf(head, "%s" KEYWORD_INITIALIZE_DOMAIN "%s\n", ptr->is_not ? "no_" : "", ptr->program->name)) return -ENOMEM; |
if (!ccs_io_printf(head, "%s" |
311 |
|
KEYWORD_INITIALIZE_DOMAIN "%s\n", |
312 |
|
ptr->is_not ? "no_" : "", |
313 |
|
ptr->program->name)) |
314 |
|
goto out; |
315 |
} |
} |
316 |
} |
} |
317 |
return 0; |
return true; |
318 |
|
out: |
319 |
|
return false; |
320 |
} |
} |
321 |
|
|
322 |
int AddDomainInitializerPolicy(char *data, const bool is_not, const bool is_delete) |
/** |
323 |
|
* ccs_write_domain_initializer_policy - Write "struct domain_initializer_entry" |
324 |
|
* list. |
325 |
|
* |
326 |
|
* @data: String to parse. |
327 |
|
* @is_not: True if it is "no_initialize_domain" entry. |
328 |
|
* @is_delete: True if it is a delete request. |
329 |
|
* |
330 |
|
* Returns 0 on success, negative value otherwise. |
331 |
|
*/ |
332 |
|
int ccs_write_domain_initializer_policy(char *data, const bool is_not, |
333 |
|
const bool is_delete) |
334 |
{ |
{ |
335 |
char *cp = strstr(data, " from "); |
char *cp = strstr(data, " from "); |
336 |
if (cp) { |
if (cp) { |
337 |
*cp = '\0'; |
*cp = '\0'; |
338 |
return AddDomainInitializerEntry(cp + 6, data, is_not, is_delete); |
return update_domain_initializer_entry(cp + 6, data, is_not, |
339 |
|
is_delete); |
340 |
} else { |
} else { |
341 |
return AddDomainInitializerEntry(NULL, data, is_not, is_delete); |
return update_domain_initializer_entry(NULL, data, is_not, |
342 |
|
is_delete); |
343 |
} |
} |
344 |
} |
} |
345 |
|
|
346 |
static bool IsDomainInitializer(const struct path_info *domainname, const struct path_info *program, const struct path_info *last_name) |
/** |
347 |
|
* is_domain_initializer - Check whether the given program causes |
348 |
|
* domainname reinitialization. |
349 |
|
* |
350 |
|
* @domainname: The name of domain. |
351 |
|
* @program: The name of program. |
352 |
|
* @last_name: The last component of @domainname. |
353 |
|
* |
354 |
|
* Returns true if executing @program reinitializes domain transition, |
355 |
|
* false otherwise. |
356 |
|
*/ |
357 |
|
static bool is_domain_initializer(const struct path_info *domainname, |
358 |
|
const struct path_info *program, |
359 |
|
const struct path_info *last_name) |
360 |
{ |
{ |
361 |
struct domain_initializer_entry *ptr; |
struct domain_initializer_entry *ptr; |
362 |
bool flag = false; |
bool flag = false; |
363 |
list1_for_each_entry(ptr, &domain_initializer_list, list) { |
list1_for_each_entry(ptr, &domain_initializer_list, list) { |
364 |
if (ptr->is_deleted) continue; |
if (ptr->is_deleted) |
365 |
|
continue; |
366 |
if (ptr->domainname) { |
if (ptr->domainname) { |
367 |
if (!ptr->is_last_name) { |
if (!ptr->is_last_name) { |
368 |
if (ptr->domainname != domainname) continue; |
if (ptr->domainname != domainname) |
369 |
|
continue; |
370 |
} else { |
} else { |
371 |
if (pathcmp(ptr->domainname, last_name)) continue; |
if (ccs_pathcmp(ptr->domainname, last_name)) |
372 |
|
continue; |
373 |
} |
} |
374 |
} |
} |
375 |
if (pathcmp(ptr->program, program)) continue; |
if (ccs_pathcmp(ptr->program, program)) |
376 |
if (ptr->is_not) return false; |
continue; |
377 |
|
if (ptr->is_not) |
378 |
|
return false; |
379 |
flag = true; |
flag = true; |
380 |
} |
} |
381 |
return flag; |
return flag; |
382 |
} |
} |
383 |
|
|
384 |
/************************* DOMAIN KEEPER HANDLER *************************/ |
/* The list for "struct domain_keeper_entry". */ |
|
|
|
385 |
static LIST1_HEAD(domain_keeper_list); |
static LIST1_HEAD(domain_keeper_list); |
386 |
|
|
387 |
static int AddDomainKeeperEntry(const char *domainname, const char *program, const bool is_not, const bool is_delete) |
/** |
388 |
|
* update_domain_keeper_entry - Update "struct domain_keeper_entry" list. |
389 |
|
* |
390 |
|
* @domainname: The name of domain. |
391 |
|
* @program: The name of program. May be NULL. |
392 |
|
* @is_not: True if it is "no_keep_domain" entry. |
393 |
|
* @is_delete: True if it is a delete request. |
394 |
|
* |
395 |
|
* Returns 0 on success, negative value otherwise. |
396 |
|
*/ |
397 |
|
static int update_domain_keeper_entry(const char *domainname, |
398 |
|
const char *program, |
399 |
|
const bool is_not, const bool is_delete) |
400 |
{ |
{ |
401 |
struct domain_keeper_entry *new_entry, *ptr; |
struct domain_keeper_entry *new_entry, *ptr; |
402 |
const struct path_info *saved_domainname, *saved_program = NULL; |
const struct path_info *saved_domainname, *saved_program = NULL; |
403 |
static DEFINE_MUTEX(lock); |
static DEFINE_MUTEX(lock); |
404 |
int error = -ENOMEM; |
int error = -ENOMEM; |
405 |
bool is_last_name = false; |
bool is_last_name = false; |
406 |
if (!IsDomainDef(domainname) && IsCorrectPath(domainname, 1, -1, -1, __FUNCTION__)) { |
if (!ccs_is_domain_def(domainname) && |
407 |
|
ccs_is_correct_path(domainname, 1, -1, -1, __func__)) |
408 |
is_last_name = true; |
is_last_name = true; |
409 |
} else if (!IsCorrectDomain(domainname, __FUNCTION__)) { |
else if (!ccs_is_correct_domain(domainname, __func__)) |
410 |
return -EINVAL; |
return -EINVAL; |
|
} |
|
411 |
if (program) { |
if (program) { |
412 |
if (!IsCorrectPath(program, 1, -1, -1, __FUNCTION__)) return -EINVAL; |
if (!ccs_is_correct_path(program, 1, -1, -1, __func__)) |
413 |
if ((saved_program = SaveName(program)) == NULL) return -ENOMEM; |
return -EINVAL; |
414 |
} |
saved_program = ccs_save_name(program); |
415 |
if ((saved_domainname = SaveName(domainname)) == NULL) return -ENOMEM; |
if (!saved_program) |
416 |
|
return -ENOMEM; |
417 |
|
} |
418 |
|
saved_domainname = ccs_save_name(domainname); |
419 |
|
if (!saved_domainname) |
420 |
|
return -ENOMEM; |
421 |
mutex_lock(&lock); |
mutex_lock(&lock); |
422 |
list1_for_each_entry(ptr, &domain_keeper_list, list) { |
list1_for_each_entry(ptr, &domain_keeper_list, list) { |
423 |
if (ptr->is_not == is_not && ptr->domainname == saved_domainname && ptr->program == saved_program) { |
if (ptr->is_not != is_not || |
424 |
ptr->is_deleted = is_delete; |
ptr->domainname != saved_domainname || |
425 |
error = 0; |
ptr->program != saved_program) |
426 |
goto out; |
continue; |
427 |
} |
ptr->is_deleted = is_delete; |
428 |
|
error = 0; |
429 |
|
goto out; |
430 |
} |
} |
431 |
if (is_delete) { |
if (is_delete) { |
432 |
error = -ENOENT; |
error = -ENOENT; |
433 |
goto out; |
goto out; |
434 |
} |
} |
435 |
if ((new_entry = alloc_element(sizeof(*new_entry))) == NULL) goto out; |
new_entry = ccs_alloc_element(sizeof(*new_entry)); |
436 |
|
if (!new_entry) |
437 |
|
goto out; |
438 |
new_entry->domainname = saved_domainname; |
new_entry->domainname = saved_domainname; |
439 |
new_entry->program = saved_program; |
new_entry->program = saved_program; |
440 |
new_entry->is_not = is_not; |
new_entry->is_not = is_not; |
446 |
return error; |
return error; |
447 |
} |
} |
448 |
|
|
449 |
int AddDomainKeeperPolicy(char *data, const bool is_not, const bool is_delete) |
/** |
450 |
|
* ccs_write_domain_keeper_policy - Write "struct domain_keeper_entry" list. |
451 |
|
* |
452 |
|
* @data: String to parse. |
453 |
|
* @is_not: True if it is "no_keep_domain" entry. |
454 |
|
* @is_delete: True if it is a delete request. |
455 |
|
* |
456 |
|
*/ |
457 |
|
int ccs_write_domain_keeper_policy(char *data, const bool is_not, |
458 |
|
const bool is_delete) |
459 |
{ |
{ |
460 |
char *cp = strstr(data, " from "); |
char *cp = strstr(data, " from "); |
461 |
if (cp) { |
if (cp) { |
462 |
*cp = '\0'; |
*cp = '\0'; |
463 |
return AddDomainKeeperEntry(cp + 6, data, is_not, is_delete); |
return update_domain_keeper_entry(cp + 6, data, |
464 |
|
is_not, is_delete); |
465 |
} else { |
} else { |
466 |
return AddDomainKeeperEntry(data, NULL, is_not, is_delete); |
return update_domain_keeper_entry(data, NULL, |
467 |
|
is_not, is_delete); |
468 |
} |
} |
469 |
} |
} |
470 |
|
|
471 |
int ReadDomainKeeperPolicy(struct io_buffer *head) |
/** |
472 |
|
* ccs_read_domain_keeper_policy - Dump "struct domain_keeper_entry" list. |
473 |
|
* |
474 |
|
* @head: Pointer to "struct ccs_io_buffer". |
475 |
|
* |
476 |
|
* Returns true on success, false otherwise. |
477 |
|
*/ |
478 |
|
bool ccs_read_domain_keeper_policy(struct ccs_io_buffer *head) |
479 |
{ |
{ |
480 |
struct list1_head *pos; |
struct list1_head *pos; |
481 |
list1_for_each_cookie(pos, head->read_var2, &domain_keeper_list) { |
list1_for_each_cookie(pos, head->read_var2, &domain_keeper_list) { |
482 |
struct domain_keeper_entry *ptr; |
struct domain_keeper_entry *ptr; |
483 |
|
const char *is_not; |
484 |
ptr = list1_entry(pos, struct domain_keeper_entry, list); |
ptr = list1_entry(pos, struct domain_keeper_entry, list); |
485 |
if (ptr->is_deleted) continue; |
if (ptr->is_deleted) |
486 |
|
continue; |
487 |
|
is_not = ptr->is_not ? "no_" : ""; |
488 |
if (ptr->program) { |
if (ptr->program) { |
489 |
if (io_printf(head, "%s" KEYWORD_KEEP_DOMAIN "%s from %s\n", ptr->is_not ? "no_" : "", ptr->program->name, ptr->domainname->name)) return -ENOMEM; |
if (!ccs_io_printf(head, |
490 |
|
"%s" KEYWORD_KEEP_DOMAIN "%s " |
491 |
|
"from %s\n", |
492 |
|
is_not, ptr->program->name, |
493 |
|
ptr->domainname->name)) |
494 |
|
goto out; |
495 |
} else { |
} else { |
496 |
if (io_printf(head, "%s" KEYWORD_KEEP_DOMAIN "%s\n", ptr->is_not ? "no_" : "", ptr->domainname->name)) return -ENOMEM; |
if (!ccs_io_printf(head, |
497 |
|
"%s" KEYWORD_KEEP_DOMAIN "%s\n", |
498 |
|
is_not, ptr->domainname->name)) |
499 |
|
goto out; |
500 |
} |
} |
501 |
} |
} |
502 |
return 0; |
return true; |
503 |
|
out: |
504 |
|
return false; |
505 |
} |
} |
506 |
|
|
507 |
static bool IsDomainKeeper(const struct path_info *domainname, const struct path_info *program, const struct path_info *last_name) |
/** |
508 |
|
* is_domain_keeper - Check whether the given program causes domain transition |
509 |
|
* suppression. |
510 |
|
* |
511 |
|
* @domainname: The name of domain. |
512 |
|
* @program: The name of program. |
513 |
|
* @last_name: The last component of @domainname. |
514 |
|
* |
515 |
|
* Returns true if executing @program supresses domain transition, |
516 |
|
* false otherwise. |
517 |
|
*/ |
518 |
|
static bool is_domain_keeper(const struct path_info *domainname, |
519 |
|
const struct path_info *program, |
520 |
|
const struct path_info *last_name) |
521 |
{ |
{ |
522 |
struct domain_keeper_entry *ptr; |
struct domain_keeper_entry *ptr; |
523 |
bool flag = false; |
bool flag = false; |
524 |
list1_for_each_entry(ptr, &domain_keeper_list, list) { |
list1_for_each_entry(ptr, &domain_keeper_list, list) { |
525 |
if (ptr->is_deleted) continue; |
if (ptr->is_deleted) |
526 |
|
continue; |
527 |
if (!ptr->is_last_name) { |
if (!ptr->is_last_name) { |
528 |
if (ptr->domainname != domainname) continue; |
if (ptr->domainname != domainname) |
529 |
|
continue; |
530 |
} else { |
} else { |
531 |
if (pathcmp(ptr->domainname, last_name)) continue; |
if (ccs_pathcmp(ptr->domainname, last_name)) |
532 |
|
continue; |
533 |
} |
} |
534 |
if (ptr->program && pathcmp(ptr->program, program)) continue; |
if (ptr->program && ccs_pathcmp(ptr->program, program)) |
535 |
if (ptr->is_not) return false; |
continue; |
536 |
|
if (ptr->is_not) |
537 |
|
return false; |
538 |
flag = true; |
flag = true; |
539 |
} |
} |
540 |
return flag; |
return flag; |
541 |
} |
} |
542 |
|
|
543 |
/************************* SYMBOLIC LINKED PROGRAM HANDLER *************************/ |
/* The list for "struct alias_entry". */ |
|
|
|
544 |
static LIST1_HEAD(alias_list); |
static LIST1_HEAD(alias_list); |
545 |
|
|
546 |
static int AddAliasEntry(const char *original_name, const char *aliased_name, const bool is_delete) |
/** |
547 |
|
* update_alias_entry - Update "struct alias_entry" list. |
548 |
|
* |
549 |
|
* @original_name: The original program's real name. |
550 |
|
* @aliased_name: The symbolic program's symbolic link's name. |
551 |
|
* @is_delete: True if it is a delete request. |
552 |
|
* |
553 |
|
* Returns 0 on success, negative value otherwise. |
554 |
|
*/ |
555 |
|
static int update_alias_entry(const char *original_name, |
556 |
|
const char *aliased_name, |
557 |
|
const bool is_delete) |
558 |
{ |
{ |
559 |
struct alias_entry *new_entry, *ptr; |
struct alias_entry *new_entry, *ptr; |
560 |
static DEFINE_MUTEX(lock); |
static DEFINE_MUTEX(lock); |
561 |
const struct path_info *saved_original_name, *saved_aliased_name; |
const struct path_info *saved_original_name, *saved_aliased_name; |
562 |
int error = -ENOMEM; |
int error = -ENOMEM; |
563 |
if (!IsCorrectPath(original_name, 1, -1, -1, __FUNCTION__) || !IsCorrectPath(aliased_name, 1, -1, -1, __FUNCTION__)) return -EINVAL; /* No patterns allowed. */ |
if (!ccs_is_correct_path(original_name, 1, -1, -1, __func__) || |
564 |
if ((saved_original_name = SaveName(original_name)) == NULL || (saved_aliased_name = SaveName(aliased_name)) == NULL) return -ENOMEM; |
!ccs_is_correct_path(aliased_name, 1, -1, -1, __func__)) |
565 |
|
return -EINVAL; /* No patterns allowed. */ |
566 |
|
saved_original_name = ccs_save_name(original_name); |
567 |
|
saved_aliased_name = ccs_save_name(aliased_name); |
568 |
|
if (!saved_original_name || !saved_aliased_name) |
569 |
|
return -ENOMEM; |
570 |
mutex_lock(&lock); |
mutex_lock(&lock); |
571 |
list1_for_each_entry(ptr, &alias_list, list) { |
list1_for_each_entry(ptr, &alias_list, list) { |
572 |
if (ptr->original_name == saved_original_name && ptr->aliased_name == saved_aliased_name) { |
if (ptr->original_name != saved_original_name || |
573 |
ptr->is_deleted = is_delete; |
ptr->aliased_name != saved_aliased_name) |
574 |
error = 0; |
continue; |
575 |
goto out; |
ptr->is_deleted = is_delete; |
576 |
} |
error = 0; |
577 |
|
goto out; |
578 |
} |
} |
579 |
if (is_delete) { |
if (is_delete) { |
580 |
error = -ENOENT; |
error = -ENOENT; |
581 |
goto out; |
goto out; |
582 |
} |
} |
583 |
if ((new_entry = alloc_element(sizeof(*new_entry))) == NULL) goto out; |
new_entry = ccs_alloc_element(sizeof(*new_entry)); |
584 |
|
if (!new_entry) |
585 |
|
goto out; |
586 |
new_entry->original_name = saved_original_name; |
new_entry->original_name = saved_original_name; |
587 |
new_entry->aliased_name = saved_aliased_name; |
new_entry->aliased_name = saved_aliased_name; |
588 |
list1_add_tail_mb(&new_entry->list, &alias_list); |
list1_add_tail_mb(&new_entry->list, &alias_list); |
592 |
return error; |
return error; |
593 |
} |
} |
594 |
|
|
595 |
int ReadAliasPolicy(struct io_buffer *head) |
/** |
596 |
|
* ccs_read_alias_policy - Dump "struct alias_entry" list. |
597 |
|
* |
598 |
|
* @head: Pointer to "struct ccs_io_buffer". |
599 |
|
* |
600 |
|
* Returns true on success, false otherwise. |
601 |
|
*/ |
602 |
|
bool ccs_read_alias_policy(struct ccs_io_buffer *head) |
603 |
{ |
{ |
604 |
struct list1_head *pos; |
struct list1_head *pos; |
605 |
list1_for_each_cookie(pos, head->read_var2, &alias_list) { |
list1_for_each_cookie(pos, head->read_var2, &alias_list) { |
606 |
struct alias_entry *ptr; |
struct alias_entry *ptr; |
607 |
ptr = list1_entry(pos, struct alias_entry, list); |
ptr = list1_entry(pos, struct alias_entry, list); |
608 |
if (ptr->is_deleted) continue; |
if (ptr->is_deleted) |
609 |
if (io_printf(head, KEYWORD_ALIAS "%s %s\n", ptr->original_name->name, ptr->aliased_name->name)) return -ENOMEM; |
continue; |
610 |
|
if (!ccs_io_printf(head, KEYWORD_ALIAS "%s %s\n", |
611 |
|
ptr->original_name->name, |
612 |
|
ptr->aliased_name->name)) |
613 |
|
goto out; |
614 |
} |
} |
615 |
return 0; |
return true; |
616 |
|
out: |
617 |
|
return false; |
618 |
} |
} |
619 |
|
|
620 |
int AddAliasPolicy(char *data, const bool is_delete) |
/** |
621 |
|
* ccs_write_alias_policy - Write "struct alias_entry" list. |
622 |
|
* |
623 |
|
* @data: String to parse. |
624 |
|
* @is_delete: True if it is a delete request. |
625 |
|
* |
626 |
|
* Returns 0 on success, negative value otherwise. |
627 |
|
*/ |
628 |
|
int ccs_write_alias_policy(char *data, const bool is_delete) |
629 |
{ |
{ |
630 |
char *cp = strchr(data, ' '); |
char *cp = strchr(data, ' '); |
631 |
if (!cp) return -EINVAL; |
if (!cp) |
632 |
|
return -EINVAL; |
633 |
*cp++ = '\0'; |
*cp++ = '\0'; |
634 |
return AddAliasEntry(data, cp, is_delete); |
return update_alias_entry(data, cp, is_delete); |
635 |
} |
} |
636 |
|
|
637 |
/************************* DOMAIN AGGREGATOR HANDLER *************************/ |
/* The list for "struct aggregator_entry". */ |
|
|
|
638 |
static LIST1_HEAD(aggregator_list); |
static LIST1_HEAD(aggregator_list); |
639 |
|
|
640 |
static int AddAggregatorEntry(const char *original_name, const char *aggregated_name, const bool is_delete) |
/** |
641 |
|
* update_aggregator_entry - Update "struct aggregator_entry" list. |
642 |
|
* |
643 |
|
* @original_name: The original program's name. |
644 |
|
* @aggregated_name: The aggregated program's name. |
645 |
|
* @is_delete: True if it is a delete request. |
646 |
|
* |
647 |
|
* Returns 0 on success, negative value otherwise. |
648 |
|
*/ |
649 |
|
static int update_aggregator_entry(const char *original_name, |
650 |
|
const char *aggregated_name, |
651 |
|
const bool is_delete) |
652 |
{ |
{ |
653 |
struct aggregator_entry *new_entry, *ptr; |
struct aggregator_entry *new_entry, *ptr; |
654 |
static DEFINE_MUTEX(lock); |
static DEFINE_MUTEX(lock); |
655 |
const struct path_info *saved_original_name, *saved_aggregated_name; |
const struct path_info *saved_original_name, *saved_aggregated_name; |
656 |
int error = -ENOMEM; |
int error = -ENOMEM; |
657 |
if (!IsCorrectPath(original_name, 1, 0, -1, __FUNCTION__) || !IsCorrectPath(aggregated_name, 1, -1, -1, __FUNCTION__)) return -EINVAL; |
if (!ccs_is_correct_path(original_name, 1, 0, -1, __func__) || |
658 |
if ((saved_original_name = SaveName(original_name)) == NULL || (saved_aggregated_name = SaveName(aggregated_name)) == NULL) return -ENOMEM; |
!ccs_is_correct_path(aggregated_name, 1, -1, -1, __func__)) |
659 |
|
return -EINVAL; |
660 |
|
saved_original_name = ccs_save_name(original_name); |
661 |
|
saved_aggregated_name = ccs_save_name(aggregated_name); |
662 |
|
if (!saved_original_name || !saved_aggregated_name) |
663 |
|
return -ENOMEM; |
664 |
mutex_lock(&lock); |
mutex_lock(&lock); |
665 |
list1_for_each_entry(ptr, &aggregator_list, list) { |
list1_for_each_entry(ptr, &aggregator_list, list) { |
666 |
if (ptr->original_name == saved_original_name && ptr->aggregated_name == saved_aggregated_name) { |
if (ptr->original_name != saved_original_name || |
667 |
ptr->is_deleted = is_delete; |
ptr->aggregated_name != saved_aggregated_name) |
668 |
error = 0; |
continue; |
669 |
goto out; |
ptr->is_deleted = is_delete; |
670 |
} |
error = 0; |
671 |
|
goto out; |
672 |
} |
} |
673 |
if (is_delete) { |
if (is_delete) { |
674 |
error = -ENOENT; |
error = -ENOENT; |
675 |
goto out; |
goto out; |
676 |
} |
} |
677 |
if ((new_entry = alloc_element(sizeof(*new_entry))) == NULL) goto out; |
new_entry = ccs_alloc_element(sizeof(*new_entry)); |
678 |
|
if (!new_entry) |
679 |
|
goto out; |
680 |
new_entry->original_name = saved_original_name; |
new_entry->original_name = saved_original_name; |
681 |
new_entry->aggregated_name = saved_aggregated_name; |
new_entry->aggregated_name = saved_aggregated_name; |
682 |
list1_add_tail_mb(&new_entry->list, &aggregator_list); |
list1_add_tail_mb(&new_entry->list, &aggregator_list); |
686 |
return error; |
return error; |
687 |
} |
} |
688 |
|
|
689 |
int ReadAggregatorPolicy(struct io_buffer *head) |
/** |
690 |
|
* ccs_read_aggregator_policy - Dump "struct aggregator_entry" list. |
691 |
|
* |
692 |
|
* @head: Pointer to "struct ccs_io_buffer". |
693 |
|
* |
694 |
|
* Returns true on success, false otherwise. |
695 |
|
*/ |
696 |
|
bool ccs_read_aggregator_policy(struct ccs_io_buffer *head) |
697 |
{ |
{ |
698 |
struct list1_head *pos; |
struct list1_head *pos; |
699 |
list1_for_each_cookie(pos, head->read_var2, &aggregator_list) { |
list1_for_each_cookie(pos, head->read_var2, &aggregator_list) { |
700 |
struct aggregator_entry *ptr; |
struct aggregator_entry *ptr; |
701 |
ptr = list1_entry(pos, struct aggregator_entry, list); |
ptr = list1_entry(pos, struct aggregator_entry, list); |
702 |
if (ptr->is_deleted) continue; |
if (ptr->is_deleted) |
703 |
if (io_printf(head, KEYWORD_AGGREGATOR "%s %s\n", ptr->original_name->name, ptr->aggregated_name->name)) return -ENOMEM; |
continue; |
704 |
|
if (!ccs_io_printf(head, KEYWORD_AGGREGATOR "%s %s\n", |
705 |
|
ptr->original_name->name, |
706 |
|
ptr->aggregated_name->name)) |
707 |
|
goto out; |
708 |
} |
} |
709 |
return 0; |
return true; |
710 |
|
out: |
711 |
|
return false; |
712 |
} |
} |
713 |
|
|
714 |
int AddAggregatorPolicy(char *data, const bool is_delete) |
/** |
715 |
|
* ccs_write_aggregator_policy - Write "struct aggregator_entry" list. |
716 |
|
* |
717 |
|
* @data: String to parse. |
718 |
|
* @is_delete: True if it is a delete request. |
719 |
|
* |
720 |
|
* Returns 0 on success, negative value otherwise. |
721 |
|
*/ |
722 |
|
int ccs_write_aggregator_policy(char *data, const bool is_delete) |
723 |
{ |
{ |
724 |
char *cp = strchr(data, ' '); |
char *cp = strchr(data, ' '); |
725 |
if (!cp) return -EINVAL; |
if (!cp) |
726 |
|
return -EINVAL; |
727 |
*cp++ = '\0'; |
*cp++ = '\0'; |
728 |
return AddAggregatorEntry(data, cp, is_delete); |
return update_aggregator_entry(data, cp, is_delete); |
729 |
} |
} |
730 |
|
|
731 |
/************************* DOMAIN DELETION HANDLER *************************/ |
/* Domain create/delete/undelete handler. */ |
732 |
|
|
733 |
/* #define DEBUG_DOMAIN_UNDELETE */ |
/* #define DEBUG_DOMAIN_UNDELETE */ |
734 |
|
|
735 |
int DeleteDomain(char *domainname0) |
/** |
736 |
|
* ccs_delete_domain - Delete a domain. |
737 |
|
* |
738 |
|
* @domainname: The name of domain. |
739 |
|
* |
740 |
|
* Returns 0. |
741 |
|
*/ |
742 |
|
int ccs_delete_domain(char *domainname) |
743 |
{ |
{ |
744 |
struct domain_info *domain; |
struct domain_info *domain; |
745 |
struct path_info domainname; |
struct path_info name; |
746 |
domainname.name = domainname0; |
name.name = domainname; |
747 |
fill_path_info(&domainname); |
ccs_fill_path_info(&name); |
748 |
mutex_lock(&new_domain_assign_lock); |
mutex_lock(&new_domain_assign_lock); |
749 |
#ifdef DEBUG_DOMAIN_UNDELETE |
#ifdef DEBUG_DOMAIN_UNDELETE |
750 |
printk("DeleteDomain %s\n", domainname0); |
printk(KERN_DEBUG "ccs_delete_domain %s\n", domainname); |
751 |
list1_for_each_entry(domain, &domain_list, list) { |
list1_for_each_entry(domain, &domain_list, list) { |
752 |
if (pathcmp(domain->domainname, &domainname)) continue; |
if (ccs_pathcmp(domain->domainname, &name)) |
753 |
printk("List: %p %u\n", domain, domain->is_deleted); |
continue; |
754 |
|
printk(KERN_DEBUG "List: %p %u\n", domain, domain->is_deleted); |
755 |
} |
} |
756 |
#endif |
#endif |
757 |
/* Is there an active domain? */ |
/* Is there an active domain? */ |
758 |
list1_for_each_entry(domain, &domain_list, list) { |
list1_for_each_entry(domain, &domain_list, list) { |
759 |
struct domain_info *domain2; |
struct domain_info *domain2; |
760 |
/* Never delete KERNEL_DOMAIN */ |
/* Never delete KERNEL_DOMAIN */ |
761 |
if (domain == &KERNEL_DOMAIN || domain->is_deleted || pathcmp(domain->domainname, &domainname)) continue; |
if (domain == &KERNEL_DOMAIN) |
762 |
|
continue; |
763 |
|
if (domain->is_deleted || |
764 |
|
ccs_pathcmp(domain->domainname, &name)) |
765 |
|
continue; |
766 |
/* Mark already deleted domains as non undeletable. */ |
/* Mark already deleted domains as non undeletable. */ |
767 |
list1_for_each_entry(domain2, &domain_list, list) { |
list1_for_each_entry(domain2, &domain_list, list) { |
768 |
if (!domain2->is_deleted || pathcmp(domain2->domainname, &domainname)) continue; |
if (!domain2->is_deleted || |
769 |
|
ccs_pathcmp(domain2->domainname, &name)) |
770 |
|
continue; |
771 |
#ifdef DEBUG_DOMAIN_UNDELETE |
#ifdef DEBUG_DOMAIN_UNDELETE |
772 |
if (domain2->is_deleted != 255) printk("Marked %p as non undeletable\n", domain2); |
if (domain2->is_deleted != 255) |
773 |
|
printk(KERN_DEBUG |
774 |
|
"Marked %p as non undeletable\n", |
775 |
|
domain2); |
776 |
#endif |
#endif |
777 |
domain2->is_deleted = 255; |
domain2->is_deleted = 255; |
778 |
} |
} |
779 |
/* Delete and mark active domain as undeletable. */ |
/* Delete and mark active domain as undeletable. */ |
780 |
domain->is_deleted = 1; |
domain->is_deleted = 1; |
781 |
#ifdef DEBUG_DOMAIN_UNDELETE |
#ifdef DEBUG_DOMAIN_UNDELETE |
782 |
printk("Marked %p as undeletable\n", domain); |
printk(KERN_DEBUG "Marked %p as undeletable\n", domain); |
783 |
#endif |
#endif |
784 |
break; |
break; |
785 |
} |
} |
787 |
return 0; |
return 0; |
788 |
} |
} |
789 |
|
|
790 |
struct domain_info *UndeleteDomain(const char *domainname0) |
/** |
791 |
|
* ccs_undelete_domain - Undelete a domain. |
792 |
|
* |
793 |
|
* @domainname: The name of domain. |
794 |
|
* |
795 |
|
* Returns pointer to "struct domain_info" on success, NULL otherwise. |
796 |
|
*/ |
797 |
|
struct domain_info *ccs_undelete_domain(const char *domainname) |
798 |
{ |
{ |
799 |
struct domain_info *domain, *candidate_domain = NULL; |
struct domain_info *domain, *candidate_domain = NULL; |
800 |
struct path_info domainname; |
struct path_info name; |
801 |
domainname.name = domainname0; |
name.name = domainname; |
802 |
fill_path_info(&domainname); |
ccs_fill_path_info(&name); |
803 |
mutex_lock(&new_domain_assign_lock); |
mutex_lock(&new_domain_assign_lock); |
804 |
#ifdef DEBUG_DOMAIN_UNDELETE |
#ifdef DEBUG_DOMAIN_UNDELETE |
805 |
printk("UndeleteDomain %s\n", domainname0); |
printk(KERN_DEBUG "ccs_undelete_domain %s\n", domainname); |
806 |
list1_for_each_entry(domain, &domain_list, list) { |
list1_for_each_entry(domain, &domain_list, list) { |
807 |
if (pathcmp(domain->domainname, &domainname)) continue; |
if (ccs_pathcmp(domain->domainname, &name)) |
808 |
printk("List: %p %u\n", domain, domain->is_deleted); |
continue; |
809 |
|
printk(KERN_DEBUG "List: %p %u\n", domain, domain->is_deleted); |
810 |
} |
} |
811 |
#endif |
#endif |
812 |
list1_for_each_entry(domain, &domain_list, list) { |
list1_for_each_entry(domain, &domain_list, list) { |
813 |
if (pathcmp(&domainname, domain->domainname)) continue; |
if (ccs_pathcmp(&name, domain->domainname)) |
814 |
|
continue; |
815 |
if (!domain->is_deleted) { |
if (!domain->is_deleted) { |
816 |
/* This domain is active. I can't undelete. */ |
/* This domain is active. I can't undelete. */ |
817 |
candidate_domain = NULL; |
candidate_domain = NULL; |
818 |
#ifdef DEBUG_DOMAIN_UNDELETE |
#ifdef DEBUG_DOMAIN_UNDELETE |
819 |
printk("%p is active. I can't undelete.\n", domain); |
printk(KERN_DEBUG "%p is active. I can't undelete.\n", |
820 |
|
domain); |
821 |
#endif |
#endif |
822 |
break; |
break; |
823 |
} |
} |
824 |
/* Is this domain undeletable? */ |
/* Is this domain undeletable? */ |
825 |
if (domain->is_deleted == 1) candidate_domain = domain; |
if (domain->is_deleted == 1) |
826 |
|
candidate_domain = domain; |
827 |
} |
} |
828 |
if (candidate_domain) { |
if (candidate_domain) { |
829 |
candidate_domain->is_deleted = 0; |
candidate_domain->is_deleted = 0; |
830 |
#ifdef DEBUG_DOMAIN_UNDELETE |
#ifdef DEBUG_DOMAIN_UNDELETE |
831 |
printk("%p was undeleted.\n", candidate_domain); |
printk(KERN_DEBUG "%p was undeleted.\n", candidate_domain); |
832 |
#endif |
#endif |
833 |
} |
} |
834 |
mutex_unlock(&new_domain_assign_lock); |
mutex_unlock(&new_domain_assign_lock); |
835 |
return candidate_domain; |
return candidate_domain; |
836 |
} |
} |
837 |
|
|
838 |
/************************* DOMAIN TRANSITION HANDLER *************************/ |
/** |
839 |
|
* ccs_find_or_assign_new_domain - Create a domain. |
840 |
struct domain_info *FindOrAssignNewDomain(const char *domainname, const u8 profile) |
* |
841 |
|
* @domainname: The name of domain. |
842 |
|
* @profile: Profile number to assign if the domain was newly created. |
843 |
|
* |
844 |
|
* Returns pointer to "struct domain_info" on success, NULL otherwise. |
845 |
|
*/ |
846 |
|
struct domain_info *ccs_find_or_assign_new_domain(const char *domainname, |
847 |
|
const u8 profile) |
848 |
{ |
{ |
849 |
struct domain_info *domain = NULL; |
struct domain_info *domain = NULL; |
850 |
const struct path_info *saved_domainname; |
const struct path_info *saved_domainname; |
851 |
mutex_lock(&new_domain_assign_lock); |
mutex_lock(&new_domain_assign_lock); |
852 |
if ((domain = FindDomain(domainname)) != NULL) goto out; |
domain = ccs_find_domain(domainname); |
853 |
if (!IsCorrectDomain(domainname, __FUNCTION__)) goto out; |
if (domain) |
854 |
if ((saved_domainname = SaveName(domainname)) == NULL) goto out; |
goto out; |
855 |
|
if (!ccs_is_correct_domain(domainname, __func__)) |
856 |
|
goto out; |
857 |
|
saved_domainname = ccs_save_name(domainname); |
858 |
|
if (!saved_domainname) |
859 |
|
goto out; |
860 |
/* Can I reuse memory of deleted domain? */ |
/* Can I reuse memory of deleted domain? */ |
861 |
list1_for_each_entry(domain, &domain_list, list) { |
list1_for_each_entry(domain, &domain_list, list) { |
862 |
struct task_struct *p; |
struct task_struct *p; |
863 |
struct acl_info *ptr; |
struct acl_info *ptr; |
864 |
bool flag; |
bool flag; |
865 |
if (!domain->is_deleted || domain->domainname != saved_domainname) continue; |
if (!domain->is_deleted || |
866 |
|
domain->domainname != saved_domainname) |
867 |
|
continue; |
868 |
flag = false; |
flag = false; |
869 |
/***** CRITICAL SECTION START *****/ |
/***** CRITICAL SECTION START *****/ |
870 |
read_lock(&tasklist_lock); |
read_lock(&tasklist_lock); |
871 |
for_each_process(p) { |
for_each_process(p) { |
872 |
if (p->domain_info == domain) { flag = true; break; } |
if (p->domain_info == domain) { |
873 |
|
flag = true; |
874 |
|
break; |
875 |
|
} |
876 |
} |
} |
877 |
read_unlock(&tasklist_lock); |
read_unlock(&tasklist_lock); |
878 |
/***** CRITICAL SECTION END *****/ |
/***** CRITICAL SECTION END *****/ |
879 |
if (flag) continue; |
if (flag) |
880 |
|
continue; |
881 |
#ifdef DEBUG_DOMAIN_UNDELETE |
#ifdef DEBUG_DOMAIN_UNDELETE |
882 |
printk("Reusing %p %s\n", domain, domain->domainname->name); |
printk(KERN_DEBUG "Reusing %p %s\n", domain, |
883 |
|
domain->domainname->name); |
884 |
#endif |
#endif |
885 |
list1_for_each_entry(ptr, &domain->acl_info_list, list) { |
list1_for_each_entry(ptr, &domain->acl_info_list, list) { |
886 |
ptr->type |= ACL_DELETED; |
ptr->type |= ACL_DELETED; |
887 |
} |
} |
888 |
|
/* |
889 |
|
* Don't use ccs_set_domain_flag() because |
890 |
|
* new_domain_assign_lock is held. |
891 |
|
*/ |
892 |
domain->flags = 0; |
domain->flags = 0; |
893 |
domain->profile = profile; |
domain->profile = profile; |
894 |
domain->quota_warned = false; |
domain->quota_warned = false; |
897 |
goto out; |
goto out; |
898 |
} |
} |
899 |
/* No memory reusable. Create using new memory. */ |
/* No memory reusable. Create using new memory. */ |
900 |
if ((domain = alloc_element(sizeof(*domain))) != NULL) { |
domain = ccs_alloc_element(sizeof(*domain)); |
901 |
|
if (domain) { |
902 |
INIT_LIST1_HEAD(&domain->acl_info_list); |
INIT_LIST1_HEAD(&domain->acl_info_list); |
903 |
domain->domainname = saved_domainname; |
domain->domainname = saved_domainname; |
904 |
domain->profile = profile; |
domain->profile = profile; |
905 |
list1_add_tail_mb(&domain->list, &domain_list); |
list1_add_tail_mb(&domain->list, &domain_list); |
906 |
} |
} |
907 |
out: ; |
out: |
908 |
mutex_unlock(&new_domain_assign_lock); |
mutex_unlock(&new_domain_assign_lock); |
909 |
return domain; |
return domain; |
910 |
} |
} |
911 |
|
|
912 |
|
/** |
913 |
|
* get_argv0 - Get argv[0]. |
914 |
|
* |
915 |
|
* @bprm: Pointer to "struct linux_binprm". |
916 |
|
* @tmp: Buffer for temporal use. |
917 |
|
* |
918 |
|
* Returns true on success, false otherwise. |
919 |
|
*/ |
920 |
static bool get_argv0(struct linux_binprm *bprm, struct ccs_page_buffer *tmp) |
static bool get_argv0(struct linux_binprm *bprm, struct ccs_page_buffer *tmp) |
921 |
{ |
{ |
922 |
char *arg_ptr = tmp->buffer; |
char *arg_ptr = tmp->buffer; |
923 |
int arg_len = 0; |
int arg_len = 0; |
924 |
unsigned long pos = bprm->p; |
unsigned long pos = bprm->p; |
925 |
int i = pos / PAGE_SIZE, offset = pos % PAGE_SIZE; |
int i = pos / PAGE_SIZE; |
926 |
|
int offset = pos % PAGE_SIZE; |
927 |
bool done = false; |
bool done = false; |
928 |
if (!bprm->argc) goto out; |
if (!bprm->argc) |
929 |
|
goto out; |
930 |
while (1) { |
while (1) { |
931 |
struct page *page; |
struct page *page; |
932 |
const char *kaddr; |
const char *kaddr; |
933 |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,23) && defined(CONFIG_MMU) |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 23) && defined(CONFIG_MMU) |
934 |
if (get_user_pages(current, bprm->mm, pos, 1, 0, 1, &page, NULL) <= 0) goto out; |
if (get_user_pages(current, bprm->mm, pos, 1, 0, 1, &page, |
935 |
|
NULL) <= 0) |
936 |
|
goto out; |
937 |
pos += PAGE_SIZE - offset; |
pos += PAGE_SIZE - offset; |
938 |
#else |
#else |
939 |
page = bprm->page[i]; |
page = bprm->page[i]; |
941 |
/* Map. */ |
/* Map. */ |
942 |
kaddr = kmap(page); |
kaddr = kmap(page); |
943 |
if (!kaddr) { /* Mapping failed. */ |
if (!kaddr) { /* Mapping failed. */ |
944 |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,23) && defined(CONFIG_MMU) |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 23) && defined(CONFIG_MMU) |
945 |
put_page(page); |
put_page(page); |
946 |
#endif |
#endif |
947 |
goto out; |
goto out; |
960 |
} else { |
} else { |
961 |
arg_ptr[arg_len++] = '\\'; |
arg_ptr[arg_len++] = '\\'; |
962 |
arg_ptr[arg_len++] = (c >> 6) + '0'; |
arg_ptr[arg_len++] = (c >> 6) + '0'; |
963 |
arg_ptr[arg_len++] = ((c >> 3) & 7) + '0'; |
arg_ptr[arg_len++] |
964 |
|
= ((c >> 3) & 7) + '0'; |
965 |
arg_ptr[arg_len++] = (c & 7) + '0'; |
arg_ptr[arg_len++] = (c & 7) + '0'; |
966 |
} |
} |
967 |
} else { |
} else { |
972 |
} |
} |
973 |
/* Unmap. */ |
/* Unmap. */ |
974 |
kunmap(page); |
kunmap(page); |
975 |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,23) && defined(CONFIG_MMU) |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 23) && defined(CONFIG_MMU) |
976 |
put_page(page); |
put_page(page); |
977 |
#endif |
#endif |
978 |
i++; |
i++; |
979 |
offset = 0; |
offset = 0; |
980 |
if (done) break; |
if (done) |
981 |
|
break; |
982 |
} |
} |
983 |
return true; |
return true; |
984 |
out: |
out: |
985 |
return false; |
return false; |
986 |
} |
} |
987 |
|
|
988 |
static int FindNextDomain(struct linux_binprm *bprm, struct domain_info **next_domain, const struct path_info *path_to_verify, struct ccs_page_buffer *tmp) |
/** |
989 |
|
* find_next_domain - Find a domain. |
990 |
|
* |
991 |
|
* @bprm: Pointer to "struct linux_binprm". |
992 |
|
* @next_domain: Pointer to pointer to "struct domain_info". |
993 |
|
* @path_to_verify: Pathname to verify. May be NULL. |
994 |
|
* @tmp: Buffer for temporal use. |
995 |
|
* |
996 |
|
* Returns 0 on success, negative value otherwise. |
997 |
|
*/ |
998 |
|
static int find_next_domain(struct linux_binprm *bprm, |
999 |
|
struct domain_info **next_domain, |
1000 |
|
const struct path_info *path_to_verify, |
1001 |
|
struct ccs_page_buffer *tmp) |
1002 |
{ |
{ |
1003 |
/* This function assumes that the size of buffer returned by realpath() = CCS_MAX_PATHNAME_LEN. */ |
/* |
1004 |
struct domain_info *old_domain = current->domain_info, *domain = NULL; |
* This function assumes that the size of buffer returned by |
1005 |
|
* ccs_realpath() = CCS_MAX_PATHNAME_LEN. |
1006 |
|
*/ |
1007 |
|
struct domain_info *old_domain = current->domain_info; |
1008 |
|
struct domain_info *domain = NULL; |
1009 |
const char *old_domain_name = old_domain->domainname->name; |
const char *old_domain_name = old_domain->domainname->name; |
1010 |
const char *original_name = bprm->filename; |
const char *original_name = bprm->filename; |
1011 |
char *new_domain_name = NULL; |
char *new_domain_name = NULL; |
1012 |
char *real_program_name = NULL, *symlink_program_name = NULL; |
char *real_program_name = NULL; |
1013 |
const bool is_enforce = (CheckCCSFlags(CCS_TOMOYO_MAC_FOR_FILE) == 3); |
char *symlink_program_name = NULL; |
1014 |
|
const u8 mode = ccs_check_flags(CCS_TOMOYO_MAC_FOR_FILE); |
1015 |
|
const bool is_enforce = (mode == 3); |
1016 |
int retval; |
int retval; |
1017 |
struct path_info r, s, l; |
struct path_info r, s, l; |
1018 |
|
|
1019 |
{ |
{ |
1020 |
/* |
/* |
1021 |
* Built-in initializers. This is needed because policies are not loaded until starting /sbin/init . |
* Built-in initializers. This is needed because policies are |
1022 |
|
* not loaded until starting /sbin/init . |
1023 |
*/ |
*/ |
1024 |
static bool first = true; |
static bool first = true; |
1025 |
if (first) { |
if (first) { |
1026 |
AddDomainInitializerEntry(NULL, "/sbin/hotplug", 0, 0); |
update_domain_initializer_entry(NULL, "/sbin/hotplug", |
1027 |
AddDomainInitializerEntry(NULL, "/sbin/modprobe", 0, 0); |
false, false); |
1028 |
|
update_domain_initializer_entry(NULL, "/sbin/modprobe", |
1029 |
|
false, false); |
1030 |
first = false; |
first = false; |
1031 |
} |
} |
1032 |
} |
} |
1033 |
|
|
1034 |
/* Get realpath of program. */ |
/* Get ccs_realpath of program. */ |
1035 |
retval = -ENOENT; /* I hope realpath() won't fail with -ENOMEM. */ |
retval = -ENOENT; /* I hope ccs_realpath() won't fail with -ENOMEM. */ |
1036 |
if ((real_program_name = realpath(original_name)) == NULL) goto out; |
real_program_name = ccs_realpath(original_name); |
1037 |
/* Get realpath of symbolic link. */ |
if (!real_program_name) |
1038 |
if ((symlink_program_name = realpath_nofollow(original_name)) == NULL) goto out; |
goto out; |
1039 |
|
/* Get ccs_realpath of symbolic link. */ |
1040 |
|
symlink_program_name = ccs_realpath_nofollow(original_name); |
1041 |
|
if (!symlink_program_name) |
1042 |
|
goto out; |
1043 |
|
|
1044 |
r.name = real_program_name; |
r.name = real_program_name; |
1045 |
fill_path_info(&r); |
ccs_fill_path_info(&r); |
1046 |
s.name = symlink_program_name; |
s.name = symlink_program_name; |
1047 |
fill_path_info(&s); |
ccs_fill_path_info(&s); |
1048 |
if ((l.name = strrchr(old_domain_name, ' ')) != NULL) l.name++; |
l.name = ccs_get_last_name(old_domain); |
1049 |
else l.name = old_domain_name; |
ccs_fill_path_info(&l); |
|
fill_path_info(&l); |
|
1050 |
|
|
1051 |
if (path_to_verify) { |
if (path_to_verify) { |
1052 |
if (pathcmp(&r, path_to_verify)) { |
if (ccs_pathcmp(&r, path_to_verify)) { |
1053 |
static u8 counter = 20; |
static u8 counter = 20; |
1054 |
if (counter) { |
if (counter) { |
1055 |
counter--; |
counter--; |
1056 |
printk("Failed to verify: %s\n", path_to_verify->name); |
printk(KERN_WARNING "Failed to verify: %s\n", |
1057 |
|
path_to_verify->name); |
1058 |
} |
} |
1059 |
goto out; |
goto out; |
1060 |
} |
} |
1061 |
goto ok; |
goto calculate_domain; |
1062 |
} |
} |
1063 |
|
|
1064 |
/* Check 'alias' directive. */ |
/* Check 'alias' directive. */ |
1065 |
if (pathcmp(&r, &s)) { |
if (ccs_pathcmp(&r, &s)) { |
1066 |
struct alias_entry *ptr; |
struct alias_entry *ptr; |
1067 |
/* Is this program allowed to be called via symbolic links? */ |
/* Is this program allowed to be called via symbolic links? */ |
1068 |
list1_for_each_entry(ptr, &alias_list, list) { |
list1_for_each_entry(ptr, &alias_list, list) { |
1069 |
if (ptr->is_deleted || pathcmp(&r, ptr->original_name) || pathcmp(&s, ptr->aliased_name)) continue; |
if (ptr->is_deleted || |
1070 |
|
ccs_pathcmp(&r, ptr->original_name) || |
1071 |
|
ccs_pathcmp(&s, ptr->aliased_name)) |
1072 |
|
continue; |
1073 |
memset(real_program_name, 0, CCS_MAX_PATHNAME_LEN); |
memset(real_program_name, 0, CCS_MAX_PATHNAME_LEN); |
1074 |
strncpy(real_program_name, ptr->aliased_name->name, CCS_MAX_PATHNAME_LEN - 1); |
strncpy(real_program_name, ptr->aliased_name->name, |
1075 |
fill_path_info(&r); |
CCS_MAX_PATHNAME_LEN - 1); |
1076 |
|
ccs_fill_path_info(&r); |
1077 |
break; |
break; |
1078 |
} |
} |
1079 |
} |
} |
1080 |
|
|
1081 |
/* Compare basename of real_program_name and argv[0] */ |
/* Compare basename of real_program_name and argv[0] */ |
1082 |
if (bprm->argc > 0 && CheckCCSFlags(CCS_TOMOYO_MAC_FOR_ARGV0)) { |
if (bprm->argc > 0 && ccs_check_flags(CCS_TOMOYO_MAC_FOR_ARGV0)) { |
1083 |
char *base_argv0 = tmp->buffer; |
char *base_argv0 = tmp->buffer; |
1084 |
const char *base_filename; |
const char *base_filename; |
1085 |
retval = -ENOMEM; |
retval = -ENOMEM; |
1086 |
if (!get_argv0(bprm, tmp)) goto out; |
if (!get_argv0(bprm, tmp)) |
1087 |
if ((base_filename = strrchr(real_program_name, '/')) == NULL) base_filename = real_program_name; else base_filename++; |
goto out; |
1088 |
|
base_filename = strrchr(real_program_name, '/'); |
1089 |
|
if (!base_filename) |
1090 |
|
base_filename = real_program_name; |
1091 |
|
else |
1092 |
|
base_filename++; |
1093 |
if (strcmp(base_argv0, base_filename)) { |
if (strcmp(base_argv0, base_filename)) { |
1094 |
retval = CheckArgv0Perm(&r, base_argv0); |
retval = ccs_check_argv0_perm(&r, base_argv0); |
1095 |
if (retval) goto out; |
if (retval) |
1096 |
|
goto out; |
1097 |
} |
} |
1098 |
} |
} |
1099 |
|
|
1102 |
struct aggregator_entry *ptr; |
struct aggregator_entry *ptr; |
1103 |
/* Is this program allowed to be aggregated? */ |
/* Is this program allowed to be aggregated? */ |
1104 |
list1_for_each_entry(ptr, &aggregator_list, list) { |
list1_for_each_entry(ptr, &aggregator_list, list) { |
1105 |
if (ptr->is_deleted || !PathMatchesToPattern(&r, ptr->original_name)) continue; |
if (ptr->is_deleted || |
1106 |
|
!ccs_path_matches_pattern(&r, ptr->original_name)) |
1107 |
|
continue; |
1108 |
memset(real_program_name, 0, CCS_MAX_PATHNAME_LEN); |
memset(real_program_name, 0, CCS_MAX_PATHNAME_LEN); |
1109 |
strncpy(real_program_name, ptr->aggregated_name->name, CCS_MAX_PATHNAME_LEN - 1); |
strncpy(real_program_name, ptr->aggregated_name->name, |
1110 |
fill_path_info(&r); |
CCS_MAX_PATHNAME_LEN - 1); |
1111 |
|
ccs_fill_path_info(&r); |
1112 |
break; |
break; |
1113 |
} |
} |
1114 |
} |
} |
1115 |
|
|
1116 |
/* Check execute permission. */ |
/* Check execute permission. */ |
1117 |
if ((retval = CheckExecPerm(&r, bprm, tmp)) < 0) goto out; |
retval = ccs_check_exec_perm(&r, bprm, tmp); |
1118 |
|
if (retval < 0) |
1119 |
|
goto out; |
1120 |
|
|
1121 |
ok: ; |
calculate_domain: |
1122 |
new_domain_name = tmp->buffer; |
new_domain_name = tmp->buffer; |
1123 |
if (IsDomainInitializer(old_domain->domainname, &r, &l)) { |
if (is_domain_initializer(old_domain->domainname, &r, &l)) { |
1124 |
/* Transit to the child of KERNEL_DOMAIN domain. */ |
/* Transit to the child of KERNEL_DOMAIN domain. */ |
1125 |
snprintf(new_domain_name, CCS_MAX_PATHNAME_LEN + 1, ROOT_NAME " " "%s", real_program_name); |
snprintf(new_domain_name, CCS_MAX_PATHNAME_LEN + 1, |
1126 |
|
ROOT_NAME " " "%s", real_program_name); |
1127 |
} else if (old_domain == &KERNEL_DOMAIN && !sbin_init_started) { |
} else if (old_domain == &KERNEL_DOMAIN && !sbin_init_started) { |
1128 |
/* |
/* |
1129 |
* Needn't to transit from kernel domain before starting /sbin/init . |
* Needn't to transit from kernel domain before starting |
1130 |
* But transit from kernel domain if executing initializers, for they might start before /sbin/init . |
* /sbin/init . But transit from kernel domain if executing |
1131 |
|
* initializers because they might start before /sbin/init . |
1132 |
*/ |
*/ |
1133 |
domain = old_domain; |
domain = old_domain; |
1134 |
} else if (IsDomainKeeper(old_domain->domainname, &r, &l)) { |
} else if (is_domain_keeper(old_domain->domainname, &r, &l)) { |
1135 |
/* Keep current domain. */ |
/* Keep current domain. */ |
1136 |
domain = old_domain; |
domain = old_domain; |
1137 |
} else { |
} else { |
1138 |
/* Normal domain transition. */ |
/* Normal domain transition. */ |
1139 |
snprintf(new_domain_name, CCS_MAX_PATHNAME_LEN + 1, "%s %s", old_domain_name, real_program_name); |
snprintf(new_domain_name, CCS_MAX_PATHNAME_LEN + 1, |
1140 |
} |
"%s %s", old_domain_name, real_program_name); |
|
if (!domain && strlen(new_domain_name) < CCS_MAX_PATHNAME_LEN) { |
|
|
if (is_enforce) { |
|
|
domain = FindDomain(new_domain_name); |
|
|
if (!domain) if (CheckSupervisor("#Need to create domain\n%s\n", new_domain_name) == 0) domain = FindOrAssignNewDomain(new_domain_name, current->domain_info->profile); |
|
|
} else { |
|
|
domain = FindOrAssignNewDomain(new_domain_name, current->domain_info->profile); |
|
|
} |
|
1141 |
} |
} |
1142 |
|
if (domain || strlen(new_domain_name) >= CCS_MAX_PATHNAME_LEN) |
1143 |
|
goto done; |
1144 |
|
domain = ccs_find_domain(new_domain_name); |
1145 |
|
if (domain) |
1146 |
|
goto done; |
1147 |
|
if (is_enforce) { |
1148 |
|
if (ccs_check_supervisor("#Need to create domain\n%s\n", |
1149 |
|
new_domain_name)) |
1150 |
|
goto done; |
1151 |
|
} |
1152 |
|
domain = ccs_find_or_assign_new_domain(new_domain_name, |
1153 |
|
old_domain->profile); |
1154 |
|
if (domain) |
1155 |
|
audit_domain_creation_log(new_domain_name, mode, |
1156 |
|
domain->profile); |
1157 |
|
done: |
1158 |
if (!domain) { |
if (!domain) { |
1159 |
printk("TOMOYO-ERROR: Domain '%s' not defined.\n", new_domain_name); |
printk(KERN_WARNING "TOMOYO-ERROR: Domain '%s' not defined.\n", |
1160 |
if (is_enforce) retval = -EPERM; |
new_domain_name); |
1161 |
|
if (is_enforce) |
1162 |
|
retval = -EPERM; |
1163 |
} else { |
} else { |
1164 |
retval = 0; |
retval = 0; |
1165 |
} |
} |
1166 |
out: ; |
out: |
1167 |
ccs_free(real_program_name); |
ccs_free(real_program_name); |
1168 |
ccs_free(symlink_program_name); |
ccs_free(symlink_program_name); |
1169 |
*next_domain = domain ? domain : old_domain; |
*next_domain = domain ? domain : old_domain; |
1170 |
return retval; |
return retval; |
1171 |
} |
} |
1172 |
|
|
1173 |
static int CheckEnviron(struct linux_binprm *bprm, struct ccs_page_buffer *tmp) |
/** |
1174 |
|
* check_environ - Check permission for environment variable names. |
1175 |
|
* |
1176 |
|
* @bprm: Pointer to "struct linux_binprm". |
1177 |
|
* @tmp: Buffer for temporal use. |
1178 |
|
* |
1179 |
|
* Returns 0 on success, negative value otherwise. |
1180 |
|
*/ |
1181 |
|
static int check_environ(struct linux_binprm *bprm, struct ccs_page_buffer *tmp) |
1182 |
{ |
{ |
1183 |
const u8 profile = current->domain_info->profile; |
const u8 profile = current->domain_info->profile; |
1184 |
const u8 mode = CheckCCSFlags(CCS_TOMOYO_MAC_FOR_ENV); |
const u8 mode = ccs_check_flags(CCS_TOMOYO_MAC_FOR_ENV); |
1185 |
char *arg_ptr = tmp->buffer; |
char *arg_ptr = tmp->buffer; |
1186 |
int arg_len = 0; |
int arg_len = 0; |
1187 |
unsigned long pos = bprm->p; |
unsigned long pos = bprm->p; |
1188 |
int i = pos / PAGE_SIZE, offset = pos % PAGE_SIZE; |
int i = pos / PAGE_SIZE, offset = pos % PAGE_SIZE; |
1189 |
int argv_count = bprm->argc; |
int argv_count = bprm->argc; |
1190 |
int envp_count = bprm->envc; |
int envp_count = bprm->envc; |
1191 |
//printk("start %d %d\n", argv_count, envp_count); |
/* printk(KERN_DEBUG "start %d %d\n", argv_count, envp_count); */ |
1192 |
int error = -ENOMEM; |
int error = -ENOMEM; |
1193 |
if (!mode || !envp_count) return 0; |
if (!mode || !envp_count) |
1194 |
|
return 0; |
1195 |
while (error == -ENOMEM) { |
while (error == -ENOMEM) { |
1196 |
struct page *page; |
struct page *page; |
1197 |
const char *kaddr; |
const char *kaddr; |
1198 |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,23) && defined(CONFIG_MMU) |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 23) && defined(CONFIG_MMU) |
1199 |
if (get_user_pages(current, bprm->mm, pos, 1, 0, 1, &page, NULL) <= 0) goto out; |
if (get_user_pages(current, bprm->mm, pos, 1, 0, 1, &page, |
1200 |
|
NULL) <= 0) |
1201 |
|
goto out; |
1202 |
pos += PAGE_SIZE - offset; |
pos += PAGE_SIZE - offset; |
1203 |
#else |
#else |
1204 |
page = bprm->page[i]; |
page = bprm->page[i]; |
1206 |
/* Map. */ |
/* Map. */ |
1207 |
kaddr = kmap(page); |
kaddr = kmap(page); |
1208 |
if (!kaddr) { /* Mapping failed. */ |
if (!kaddr) { /* Mapping failed. */ |
1209 |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,23) && defined(CONFIG_MMU) |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 23) && defined(CONFIG_MMU) |
1210 |
put_page(page); |
put_page(page); |
1211 |
#endif |
#endif |
1212 |
goto out; |
goto out; |
1213 |
} |
} |
1214 |
/* Read. */ |
/* Read. */ |
1215 |
while (argv_count && offset < PAGE_SIZE) { |
while (argv_count && offset < PAGE_SIZE) { |
1216 |
if (!kaddr[offset++]) argv_count--; |
if (!kaddr[offset++]) |
1217 |
|
argv_count--; |
1218 |
} |
} |
1219 |
if (argv_count) goto unmap_page; |
if (argv_count) |
1220 |
|
goto unmap_page; |
1221 |
while (offset < PAGE_SIZE) { |
while (offset < PAGE_SIZE) { |
1222 |
const unsigned char c = kaddr[offset++]; |
const unsigned char c = kaddr[offset++]; |
1223 |
if (c && arg_len < CCS_MAX_PATHNAME_LEN - 10) { |
if (c && arg_len < CCS_MAX_PATHNAME_LEN - 10) { |
1231 |
} else { |
} else { |
1232 |
arg_ptr[arg_len++] = '\\'; |
arg_ptr[arg_len++] = '\\'; |
1233 |
arg_ptr[arg_len++] = (c >> 6) + '0'; |
arg_ptr[arg_len++] = (c >> 6) + '0'; |
1234 |
arg_ptr[arg_len++] = ((c >> 3) & 7) + '0'; |
arg_ptr[arg_len++] |
1235 |
|
= ((c >> 3) & 7) + '0'; |
1236 |
arg_ptr[arg_len++] = (c & 7) + '0'; |
arg_ptr[arg_len++] = (c & 7) + '0'; |
1237 |
} |
} |
1238 |
} else { |
} else { |
1239 |
arg_ptr[arg_len] = '\0'; |
arg_ptr[arg_len] = '\0'; |
1240 |
} |
} |
1241 |
if (c) continue; |
if (c) |
1242 |
if (CheckEnvPerm(arg_ptr, profile, mode)) { |
continue; |
1243 |
|
if (ccs_check_env_perm(arg_ptr, profile, mode)) { |
1244 |
error = -EPERM; |
error = -EPERM; |
1245 |
break; |
break; |
1246 |
} |
} |
1250 |
} |
} |
1251 |
arg_len = 0; |
arg_len = 0; |
1252 |
} |
} |
1253 |
unmap_page: |
unmap_page: |
1254 |
/* Unmap. */ |
/* Unmap. */ |
1255 |
kunmap(page); |
kunmap(page); |
1256 |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,23) && defined(CONFIG_MMU) |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 23) && defined(CONFIG_MMU) |
1257 |
put_page(page); |
put_page(page); |
1258 |
#endif |
#endif |
1259 |
i++; |
i++; |
1260 |
offset = 0; |
offset = 0; |
1261 |
} |
} |
1262 |
out: |
out: |
1263 |
if (error && mode != 3) error = 0; |
if (error && mode != 3) |
1264 |
|
error = 0; |
1265 |
return error; |
return error; |
1266 |
} |
} |
1267 |
|
|
1268 |
static void UnEscape(unsigned char *dest) |
/** |
1269 |
|
* unescape - Unescape escaped string. |
1270 |
|
* |
1271 |
|
* @dest: String to unescape. |
1272 |
|
* |
1273 |
|
* Returns nothing. |
1274 |
|
*/ |
1275 |
|
static void unescape(unsigned char *dest) |
1276 |
{ |
{ |
1277 |
unsigned char *src = dest; |
unsigned char *src = dest; |
1278 |
unsigned char c, d, e; |
unsigned char c, d, e; |
1284 |
c = *src++; |
c = *src++; |
1285 |
if (c == '\\') { |
if (c == '\\') { |
1286 |
*dest++ = c; |
*dest++ = c; |
1287 |
} else if (c >= '0' && c <= '3' && |
continue; |
|
(d = *src++) >= '0' && d <= '7' && |
|
|
(e = *src++) >= '0' && e <= '7') { |
|
|
*dest++ = ((c - '0') << 6) | ((d - '0') << 3) | (e - '0'); |
|
|
} else { |
|
|
break; |
|
1288 |
} |
} |
1289 |
|
if (c < '0' || c > '3') |
1290 |
|
break; |
1291 |
|
d = *src++; |
1292 |
|
if (d < '0' || d > '7') |
1293 |
|
break; |
1294 |
|
e = *src++; |
1295 |
|
if (e < '0' || e > '7') |
1296 |
|
break; |
1297 |
|
*dest++ = ((c - '0') << 6) + ((d - '0') << 3) + (e - '0'); |
1298 |
} |
} |
1299 |
*dest = '\0'; |
*dest = '\0'; |
1300 |
} |
} |
1301 |
|
|
1302 |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) |
/** |
1303 |
#include <linux/namei.h> |
* root_depth - Get number of directories to strip. |
1304 |
#include <linux/mount.h> |
* |
1305 |
#endif |
* @dentry: Pointer to "struct dentry". |
1306 |
|
* @vfsmnt: Pointer to "struct vfsmount". |
1307 |
/* |
* |
1308 |
* GetRootDepth - return the depth of root directory. |
* Returns number of directories to strip. |
1309 |
*/ |
*/ |
1310 |
static int GetRootDepth(void) |
static inline int root_depth(struct dentry *dentry, struct vfsmount *vfsmnt) |
1311 |
{ |
{ |
1312 |
int depth = 0; |
int depth = 0; |
|
struct dentry *dentry; |
|
|
struct vfsmount *vfsmnt; |
|
|
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,25) |
|
|
struct path root; |
|
|
#else |
|
|
struct dentry *dentry0; |
|
|
struct vfsmount *vfsmnt0; |
|
|
#endif |
|
|
read_lock(¤t->fs->lock); |
|
|
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,25) |
|
|
root = current->fs->root; |
|
|
path_get(¤t->fs->root); |
|
|
dentry = root.dentry; |
|
|
vfsmnt = root.mnt; |
|
|
#else |
|
|
dentry0 = dentry = dget(current->fs->root); |
|
|
vfsmnt0 = vfsmnt = mntget(current->fs->rootmnt); |
|
|
#endif |
|
|
read_unlock(¤t->fs->lock); |
|
1313 |
/***** CRITICAL SECTION START *****/ |
/***** CRITICAL SECTION START *****/ |
1314 |
spin_lock(&dcache_lock); |
spin_lock(&dcache_lock); |
1315 |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 5, 0) |
1316 |
spin_lock(&vfsmount_lock); |
spin_lock(&vfsmount_lock); |
1317 |
#endif |
#endif |
1318 |
for (;;) { |
for (;;) { |
1319 |
if (dentry == vfsmnt->mnt_root || IS_ROOT(dentry)) { |
if (dentry == vfsmnt->mnt_root || IS_ROOT(dentry)) { |
1320 |
/* Global root? */ |
/* Global root? */ |
1321 |
if (vfsmnt->mnt_parent == vfsmnt) break; |
if (vfsmnt->mnt_parent == vfsmnt) |
1322 |
|
break; |
1323 |
dentry = vfsmnt->mnt_mountpoint; |
dentry = vfsmnt->mnt_mountpoint; |
1324 |
vfsmnt = vfsmnt->mnt_parent; |
vfsmnt = vfsmnt->mnt_parent; |
1325 |
continue; |
continue; |
1327 |
dentry = dentry->d_parent; |
dentry = dentry->d_parent; |
1328 |
depth++; |
depth++; |
1329 |
} |
} |
1330 |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 5, 0) |
1331 |
spin_unlock(&vfsmount_lock); |
spin_unlock(&vfsmount_lock); |
1332 |
#endif |
#endif |
1333 |
spin_unlock(&dcache_lock); |
spin_unlock(&dcache_lock); |
1334 |
/***** CRITICAL SECTION END *****/ |
/***** CRITICAL SECTION END *****/ |
1335 |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,25) |
return depth; |
1336 |
|
} |
1337 |
|
|
1338 |
|
/** |
1339 |
|
* get_root_depth - return the depth of root directory. |
1340 |
|
* |
1341 |
|
* Returns number of directories to strip. |
1342 |
|
*/ |
1343 |
|
static int get_root_depth(void) |
1344 |
|
{ |
1345 |
|
int depth; |
1346 |
|
struct dentry *dentry; |
1347 |
|
struct vfsmount *vfsmnt; |
1348 |
|
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 25) |
1349 |
|
struct path root; |
1350 |
|
#endif |
1351 |
|
/***** CRITICAL SECTION START *****/ |
1352 |
|
read_lock(¤t->fs->lock); |
1353 |
|
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 25) |
1354 |
|
root = current->fs->root; |
1355 |
|
path_get(¤t->fs->root); |
1356 |
|
dentry = root.dentry; |
1357 |
|
vfsmnt = root.mnt; |
1358 |
|
#else |
1359 |
|
dentry = dget(current->fs->root); |
1360 |
|
vfsmnt = mntget(current->fs->rootmnt); |
1361 |
|
#endif |
1362 |
|
read_unlock(¤t->fs->lock); |
1363 |
|
/***** CRITICAL SECTION END *****/ |
1364 |
|
depth = root_depth(dentry, vfsmnt); |
1365 |
|
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 25) |
1366 |
path_put(&root); |
path_put(&root); |
1367 |
#else |
#else |
1368 |
dput(dentry0); |
dput(dentry); |
1369 |
mntput(vfsmnt0); |
mntput(vfsmnt); |
1370 |
#endif |
#endif |
1371 |
return depth; |
return depth; |
1372 |
} |
} |
1373 |
|
|
1374 |
static int try_alt_exec(struct linux_binprm *bprm, const struct path_info *filename, char **work, struct domain_info **next_domain, struct ccs_page_buffer *tmp) |
/** |
1375 |
|
* try_alt_exec - Try to start execute handler. |
1376 |
|
* |
1377 |
|
* @bprm: Pointer to "struct linux_binprm". |
1378 |
|
* @filename: The name of requested program. |
1379 |
|
* @work: Pointer to pointer to the name of execute handler. |
1380 |
|
* @next_domain: Pointer to pointer to "struct domain_info". |
1381 |
|
* @tmp: Buffer for temporal use. |
1382 |
|
* |
1383 |
|
* Returns 0 on success, negative value otherwise. |
1384 |
|
*/ |
1385 |
|
static int try_alt_exec(struct linux_binprm *bprm, |
1386 |
|
const struct path_info *filename, char **work, |
1387 |
|
struct domain_info **next_domain, |
1388 |
|
struct ccs_page_buffer *tmp) |
1389 |
{ |
{ |
1390 |
/* |
/* |
1391 |
* Contents of modified bprm. |
* Contents of modified bprm. |
1432 |
/* Allocate memory for execute handler's pathname. */ |
/* Allocate memory for execute handler's pathname. */ |
1433 |
char *execute_handler = ccs_alloc(sizeof(struct ccs_page_buffer)); |
char *execute_handler = ccs_alloc(sizeof(struct ccs_page_buffer)); |
1434 |
*work = execute_handler; |
*work = execute_handler; |
1435 |
if (!execute_handler) return -ENOMEM; |
if (!execute_handler) |
1436 |
strncpy(execute_handler, filename->name, sizeof(struct ccs_page_buffer) - 1); |
return -ENOMEM; |
1437 |
UnEscape(execute_handler); |
strncpy(execute_handler, filename->name, |
1438 |
|
sizeof(struct ccs_page_buffer) - 1); |
1439 |
|
unescape(execute_handler); |
1440 |
|
|
1441 |
/* Close the requested program's dentry. */ |
/* Close the requested program's dentry. */ |
1442 |
allow_write_access(bprm->file); |
allow_write_access(bprm->file); |
1444 |
bprm->file = NULL; |
bprm->file = NULL; |
1445 |
|
|
1446 |
{ /* Adjust root directory for open_exec(). */ |
{ /* Adjust root directory for open_exec(). */ |
1447 |
int depth = GetRootDepth(); |
int depth = get_root_depth(); |
1448 |
char *cp = execute_handler; |
char *cp = execute_handler; |
1449 |
if (!*cp || *cp != '/') return -ENOENT; |
if (!*cp || *cp != '/') |
1450 |
|
return -ENOENT; |
1451 |
while (depth) { |
while (depth) { |
1452 |
cp = strchr(cp + 1, '/'); |
cp = strchr(cp + 1, '/'); |
1453 |
if (!cp) return -ENOENT; |
if (!cp) |
1454 |
|
return -ENOENT; |
1455 |
depth--; |
depth--; |
1456 |
} |
} |
1457 |
memmove(execute_handler, cp, strlen(cp) + 1); |
memmove(execute_handler, cp, strlen(cp) + 1); |
1463 |
|
|
1464 |
/* Set argv[6] */ |
/* Set argv[6] */ |
1465 |
{ |
{ |
1466 |
snprintf(buffer, sizeof(struct ccs_page_buffer) - 1, "%d", original_envc); |
snprintf(buffer, sizeof(struct ccs_page_buffer) - 1, "%d", |
1467 |
|
original_envc); |
1468 |
retval = copy_strings_kernel(1, &buffer, bprm); |
retval = copy_strings_kernel(1, &buffer, bprm); |
1469 |
if (retval < 0) goto out; |
if (retval < 0) |
1470 |
|
goto out; |
1471 |
bprm->argc++; |
bprm->argc++; |
1472 |
} |
} |
1473 |
|
|
1474 |
/* Set argv[5] */ |
/* Set argv[5] */ |
1475 |
{ |
{ |
1476 |
snprintf(buffer, sizeof(struct ccs_page_buffer) - 1, "%d", original_argc); |
snprintf(buffer, sizeof(struct ccs_page_buffer) - 1, "%d", |
1477 |
|
original_argc); |
1478 |
retval = copy_strings_kernel(1, &buffer, bprm); |
retval = copy_strings_kernel(1, &buffer, bprm); |
1479 |
if (retval < 0) goto out; |
if (retval < 0) |
1480 |
|
goto out; |
1481 |
bprm->argc++; |
bprm->argc++; |
1482 |
} |
} |
1483 |
|
|
1484 |
/* Set argv[4] */ |
/* Set argv[4] */ |
1485 |
{ |
{ |
1486 |
retval = copy_strings_kernel(1, &bprm->filename, bprm); |
retval = copy_strings_kernel(1, &bprm->filename, bprm); |
1487 |
if (retval < 0) goto out; |
if (retval < 0) |
1488 |
|
goto out; |
1489 |
bprm->argc++; |
bprm->argc++; |
1490 |
} |
} |
1491 |
|
|
1492 |
/* Set argv[3] */ |
/* Set argv[3] */ |
1493 |
{ |
{ |
1494 |
const u32 tomoyo_flags = task->tomoyo_flags; |
const u32 tomoyo_flags = task->tomoyo_flags; |
1495 |
snprintf(buffer, sizeof(struct ccs_page_buffer) - 1, "pid=%d uid=%d gid=%d euid=%d egid=%d suid=%d sgid=%d fsuid=%d fsgid=%d state[0]=%u state[1]=%u state[2]=%u", task->pid, task->uid, task->gid, task->euid, task->egid, task->suid, task->sgid, task->fsuid, task->fsgid, (u8) (tomoyo_flags >> 24), (u8) (tomoyo_flags >> 16), (u8) (tomoyo_flags >> 8)); |
snprintf(buffer, sizeof(struct ccs_page_buffer) - 1, |
1496 |
|
"pid=%d uid=%d gid=%d euid=%d egid=%d suid=%d " |
1497 |
|
"sgid=%d fsuid=%d fsgid=%d state[0]=%u " |
1498 |
|
"state[1]=%u state[2]=%u", |
1499 |
|
task->pid, task->uid, task->gid, task->euid, |
1500 |
|
task->egid, task->suid, task->sgid, task->fsuid, |
1501 |
|
task->fsgid, (u8) (tomoyo_flags >> 24), |
1502 |
|
(u8) (tomoyo_flags >> 16), (u8) (tomoyo_flags >> 8)); |
1503 |
retval = copy_strings_kernel(1, &buffer, bprm); |
retval = copy_strings_kernel(1, &buffer, bprm); |
1504 |
if (retval < 0) goto out; |
if (retval < 0) |
1505 |
|
goto out; |
1506 |
bprm->argc++; |
bprm->argc++; |
1507 |
} |
} |
1508 |
|
|
1509 |
/* Set argv[2] */ |
/* Set argv[2] */ |
1510 |
{ |
{ |
1511 |
char *exe = (char *) GetEXE(); |
char *exe = (char *) ccs_get_exe(); |
1512 |
if (exe) { |
if (exe) { |
1513 |
retval = copy_strings_kernel(1, &exe, bprm); |
retval = copy_strings_kernel(1, &exe, bprm); |
1514 |
ccs_free(exe); |
ccs_free(exe); |
1515 |
} else { |
} else { |
1516 |
snprintf(buffer, sizeof(struct ccs_page_buffer) - 1, "<unknown>"); |
snprintf(buffer, sizeof(struct ccs_page_buffer) - 1, |
1517 |
|
"<unknown>"); |
1518 |
retval = copy_strings_kernel(1, &buffer, bprm); |
retval = copy_strings_kernel(1, &buffer, bprm); |
1519 |
} |
} |
1520 |
if (retval < 0) goto out; |
if (retval < 0) |
1521 |
|
goto out; |
1522 |
bprm->argc++; |
bprm->argc++; |
1523 |
} |
} |
1524 |
|
|
1525 |
/* Set argv[1] */ |
/* Set argv[1] */ |
1526 |
{ |
{ |
1527 |
strncpy(buffer, task->domain_info->domainname->name, sizeof(struct ccs_page_buffer) - 1); |
strncpy(buffer, task->domain_info->domainname->name, |
1528 |
|
sizeof(struct ccs_page_buffer) - 1); |
1529 |
retval = copy_strings_kernel(1, &buffer, bprm); |
retval = copy_strings_kernel(1, &buffer, bprm); |
1530 |
if (retval < 0) goto out; |
if (retval < 0) |
1531 |
|
goto out; |
1532 |
bprm->argc++; |
bprm->argc++; |
1533 |
} |
} |
1534 |
|
|
1535 |
/* Set argv[0] */ |
/* Set argv[0] */ |
1536 |
{ |
{ |
1537 |
retval = copy_strings_kernel(1, &execute_handler, bprm); |
retval = copy_strings_kernel(1, &execute_handler, bprm); |
1538 |
if (retval < 0) goto out; |
if (retval < 0) |
1539 |
|
goto out; |
1540 |
bprm->argc++; |
bprm->argc++; |
1541 |
} |
} |
1542 |
#if LINUX_VERSION_CODE == KERNEL_VERSION(2,6,23) || LINUX_VERSION_CODE == KERNEL_VERSION(2,6,24) |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 23) |
1543 |
|
#if LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 24) |
1544 |
bprm->argv_len = bprm->exec - bprm->p; |
bprm->argv_len = bprm->exec - bprm->p; |
1545 |
#endif |
#endif |
1546 |
|
#endif |
1547 |
|
|
1548 |
/* OK, now restart the process with execute handler program's dentry. */ |
/* OK, now restart the process with execute handler program's dentry. */ |
1549 |
filp = open_exec(execute_handler); |
filp = open_exec(execute_handler); |
1551 |
retval = PTR_ERR(filp); |
retval = PTR_ERR(filp); |
1552 |
goto out; |
goto out; |
1553 |
} |
} |
1554 |
bprm->file= filp; |
bprm->file = filp; |
1555 |
bprm->filename = execute_handler; |
bprm->filename = execute_handler; |
1556 |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 5, 0) |
1557 |
bprm->interp = execute_handler; |
bprm->interp = execute_handler; |
1558 |
#endif |
#endif |
1559 |
retval = prepare_binprm(bprm); |
retval = prepare_binprm(bprm); |
1560 |
if (retval < 0) goto out; |
if (retval < 0) |
1561 |
|
goto out; |
1562 |
task->tomoyo_flags |= CCS_DONT_SLEEP_ON_ENFORCE_ERROR; |
task->tomoyo_flags |= CCS_DONT_SLEEP_ON_ENFORCE_ERROR; |
1563 |
retval = FindNextDomain(bprm, next_domain, filename, tmp); |
retval = find_next_domain(bprm, next_domain, filename, tmp); |
1564 |
task->tomoyo_flags &= ~CCS_DONT_SLEEP_ON_ENFORCE_ERROR; |
task->tomoyo_flags &= ~CCS_DONT_SLEEP_ON_ENFORCE_ERROR; |
1565 |
out: |
out: |
1566 |
return retval; |
return retval; |
1567 |
} |
} |
1568 |
|
|
1569 |
static const struct path_info *FindExecuteHandler(bool is_preferred_handler) |
/** |
1570 |
|
* find_execute_handler - Find an execute handler. |
1571 |
|
* |
1572 |
|
* @type: Type of execute handler. |
1573 |
|
* |
1574 |
|
* Returns pointer to "struct path_info" if found, NULL otherwise. |
1575 |
|
*/ |
1576 |
|
static const struct path_info *find_execute_handler(const u8 type) |
1577 |
{ |
{ |
1578 |
const struct domain_info *domain = current->domain_info; |
const struct domain_info *domain = current->domain_info; |
1579 |
struct acl_info *ptr; |
struct acl_info *ptr; |
|
const u8 type = is_preferred_handler ? TYPE_PREFERRED_EXECUTE_HANDLER : TYPE_DEFAULT_EXECUTE_HANDLER; |
|
1580 |
list1_for_each_entry(ptr, &domain->acl_info_list, list) { |
list1_for_each_entry(ptr, &domain->acl_info_list, list) { |
1581 |
struct execute_handler_record *acl; |
struct execute_handler_record *acl; |
1582 |
if (ptr->type != type) continue; |
if ((ptr->type & ~ACL_DELETED) != type) |
1583 |
|
continue; |
1584 |
acl = container_of(ptr, struct execute_handler_record, head); |
acl = container_of(ptr, struct execute_handler_record, head); |
1585 |
return acl->handler; |
return acl->handler; |
1586 |
} |
} |
1587 |
return NULL; |
return NULL; |
1588 |
} |
} |
1589 |
|
|
1590 |
int search_binary_handler_with_transition(struct linux_binprm *bprm, struct pt_regs *regs) |
/** |
1591 |
|
* search_binary_handler_with_transition - Perform domain transition. |
1592 |
|
* |
1593 |
|
* @bprm: Pointer to "struct linux_binprm". |
1594 |
|
* @regs: Pointer to "struct pt_regs". |
1595 |
|
* |
1596 |
|
* Returns result of search_binary_handler() on success, |
1597 |
|
* negative value otherwise. |
1598 |
|
*/ |
1599 |
|
int search_binary_handler_with_transition(struct linux_binprm *bprm, |
1600 |
|
struct pt_regs *regs) |
1601 |
{ |
{ |
1602 |
struct task_struct *task = current; |
struct task_struct *task = current; |
1603 |
struct domain_info *next_domain = NULL, *prev_domain = task->domain_info; |
struct domain_info *next_domain = NULL; |
1604 |
|
struct domain_info *prev_domain = task->domain_info; |
1605 |
const struct path_info *handler; |
const struct path_info *handler; |
1606 |
int retval; |
int retval; |
1607 |
char *work = NULL; /* Keep valid until search_binary_handler() finishes. */ |
/* |
1608 |
|
* "work" holds path to program. |
1609 |
|
* Thus, keep valid until search_binary_handler() finishes. |
1610 |
|
*/ |
1611 |
|
char *work = NULL; |
1612 |
struct ccs_page_buffer *buf = ccs_alloc(sizeof(struct ccs_page_buffer)); |
struct ccs_page_buffer *buf = ccs_alloc(sizeof(struct ccs_page_buffer)); |
1613 |
CCS_LoadPolicy(bprm->filename); |
ccs_load_policy(bprm->filename); |
1614 |
if (!buf) return -ENOMEM; |
if (!buf) |
1615 |
//printk("rootdepth=%d\n", GetRootDepth()); |
return -ENOMEM; |
1616 |
handler = FindExecuteHandler(true); |
/* printk(KERN_DEBUG "rootdepth=%d\n", get_root_depth()); */ |
1617 |
|
handler = find_execute_handler(TYPE_PREFERRED_EXECUTE_HANDLER); |
1618 |
|
if (handler) { |
1619 |
|
retval = try_alt_exec(bprm, handler, &work, &next_domain, buf); |
1620 |
|
if (!retval) |
1621 |
|
audit_execute_handler_log(true, work, bprm); |
1622 |
|
goto ok; |
1623 |
|
} |
1624 |
|
retval = find_next_domain(bprm, &next_domain, NULL, buf); |
1625 |
|
if (retval != -EPERM) |
1626 |
|
goto ok; |
1627 |
|
handler = find_execute_handler(TYPE_DEFAULT_EXECUTE_HANDLER); |
1628 |
if (handler) { |
if (handler) { |
1629 |
retval = try_alt_exec(bprm, handler, &work, &next_domain, buf); |
retval = try_alt_exec(bprm, handler, &work, &next_domain, buf); |
1630 |
} else if ((retval = FindNextDomain(bprm, &next_domain, NULL, buf)) == -EPERM) { |
if (!retval) |
1631 |
handler = FindExecuteHandler(false); |
audit_execute_handler_log(false, work, bprm); |
|
if (handler) retval = try_alt_exec(bprm, handler, &work, &next_domain, buf); |
|
1632 |
} |
} |
1633 |
if (retval) goto out; |
ok: |
1634 |
|
if (retval) |
1635 |
|
goto out; |
1636 |
task->domain_info = next_domain; |
task->domain_info = next_domain; |
1637 |
retval = CheckEnviron(bprm, buf); |
retval = check_environ(bprm, buf); |
1638 |
if (retval) goto out; |
if (retval) |
1639 |
|
goto out; |
1640 |
task->tomoyo_flags |= TOMOYO_CHECK_READ_FOR_OPEN_EXEC; |
task->tomoyo_flags |= TOMOYO_CHECK_READ_FOR_OPEN_EXEC; |
1641 |
retval = search_binary_handler(bprm, regs); |
retval = search_binary_handler(bprm, regs); |
1642 |
task->tomoyo_flags &= ~TOMOYO_CHECK_READ_FOR_OPEN_EXEC; |
task->tomoyo_flags &= ~TOMOYO_CHECK_READ_FOR_OPEN_EXEC; |
1643 |
out: |
out: |
1644 |
if (retval < 0) task->domain_info = prev_domain; |
if (retval < 0) |
1645 |
|
task->domain_info = prev_domain; |
1646 |
ccs_free(work); |
ccs_free(work); |
1647 |
ccs_free(buf); |
ccs_free(buf); |
1648 |
return retval; |
return retval; |
1650 |
|
|
1651 |
#else |
#else |
1652 |
|
|
1653 |
int search_binary_handler_with_transition(struct linux_binprm *bprm, struct pt_regs *regs) |
/** |
1654 |
|
* search_binary_handler_with_transition - Wrapper for search_binary_handler(). |
1655 |
|
* |
1656 |
|
* @bprm: Pointer to "struct linux_binprm". |
1657 |
|
* @regs: Pointer to "struct pt_regs". |
1658 |
|
* |
1659 |
|
* Returns the result of search_binary_handler(). |
1660 |
|
*/ |
1661 |
|
int search_binary_handler_with_transition(struct linux_binprm *bprm, |
1662 |
|
struct pt_regs *regs) |
1663 |
{ |
{ |
1664 |
#ifdef CONFIG_SAKURA |
#ifdef CONFIG_SAKURA |
1665 |
CCS_LoadPolicy(bprm->filename); |
ccs_load_policy(bprm->filename); |
1666 |
#endif |
#endif |
1667 |
return search_binary_handler(bprm, regs); |
return search_binary_handler(bprm, regs); |
1668 |
} |
} |
1669 |
|
|
1670 |
#endif |
#endif |
|
|
|
|
/***** TOMOYO Linux end. *****/ |
|