1 |
/* |
/* |
2 |
* fs/tomoyo_domain.c |
* security/ccsecurity/domain.c |
|
* |
|
|
* Implementation of the Domain-Based Mandatory Access Control. |
|
3 |
* |
* |
4 |
* Copyright (C) 2005-2009 NTT DATA CORPORATION |
* Copyright (C) 2005-2009 NTT DATA CORPORATION |
5 |
* |
* |
6 |
* Version: 1.6.8-pre 2009/05/08 |
* Version: 1.7.0-pre 2009/08/24 |
7 |
* |
* |
8 |
* 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. |
9 |
* See README.ccs for ChangeLog. |
* See README.ccs for ChangeLog. |
10 |
* |
* |
11 |
*/ |
*/ |
12 |
|
|
13 |
#include <linux/ccs_common.h> |
#include <linux/slab.h> |
|
#include <linux/tomoyo.h> |
|
|
#include <linux/realpath.h> |
|
14 |
#include <linux/highmem.h> |
#include <linux/highmem.h> |
15 |
|
#include <linux/version.h> |
16 |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 5, 0) |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 5, 0) |
17 |
#include <linux/namei.h> |
#include <linux/namei.h> |
18 |
#include <linux/mount.h> |
#include <linux/mount.h> |
20 |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 30) |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 30) |
21 |
#include <linux/fs_struct.h> |
#include <linux/fs_struct.h> |
22 |
#endif |
#endif |
23 |
|
#include "internal.h" |
24 |
|
|
25 |
/* For compatibility with older kernels. */ |
/* For compatibility with older kernels. */ |
26 |
#ifndef for_each_process |
#ifndef for_each_process |
35 |
/* The list for "struct ccs_domain_info". */ |
/* The list for "struct ccs_domain_info". */ |
36 |
LIST_HEAD(ccs_domain_list); |
LIST_HEAD(ccs_domain_list); |
37 |
|
|
|
#ifdef CONFIG_TOMOYO |
|
|
|
|
|
/** |
|
|
* ccs_get_last_name - Get last component of a domainname. |
|
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* |
|
|
* @domain: Pointer to "struct ccs_domain_info". |
|
|
* |
|
|
* Returns the last component of the domainname. |
|
|
*/ |
|
|
const char *ccs_get_last_name(const struct ccs_domain_info *domain) |
|
|
{ |
|
|
const char *cp0 = domain->domainname->name; |
|
|
const char *cp1 = strrchr(cp0, ' '); |
|
|
if (cp1) |
|
|
return cp1 + 1; |
|
|
return cp0; |
|
|
} |
|
|
|
|
|
/** |
|
|
* ccs_add_domain_acl - Add the given ACL to the given domain. |
|
|
* |
|
|
* @domain: Pointer to "struct ccs_domain_info". May be NULL. |
|
|
* @acl: Pointer to "struct ccs_acl_info". |
|
|
* |
|
|
* Returns 0. |
|
|
*/ |
|
|
int ccs_add_domain_acl(struct ccs_domain_info *domain, struct ccs_acl_info *acl) |
|
|
{ |
|
|
if (domain) { |
|
|
if (acl->cond) |
|
|
atomic_inc(&acl->cond->users); |
|
|
list_add_tail(&acl->list, &domain->acl_info_list); |
|
|
} else { |
|
|
acl->type &= ~ACL_DELETED; |
|
|
} |
|
|
ccs_update_counter(CCS_UPDATES_COUNTER_DOMAIN_POLICY); |
|
|
return 0; |
|
|
} |
|
|
|
|
|
/** |
|
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* ccs_del_domain_acl - Delete the given ACL from the domain. |
|
|
* |
|
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* @acl: Pointer to "struct ccs_acl_info". May be NULL. |
|
|
* |
|
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* Returns 0. |
|
|
*/ |
|
|
int ccs_del_domain_acl(struct ccs_acl_info *acl) |
|
|
{ |
|
|
if (acl) |
|
|
acl->type |= ACL_DELETED; |
|
|
ccs_update_counter(CCS_UPDATES_COUNTER_DOMAIN_POLICY); |
|
|
return 0; |
|
|
} |
|
|
|
|
38 |
/** |
/** |
39 |
* ccs_audit_execute_handler_log - Audit execute_handler log. |
* ccs_audit_execute_handler_log - Audit execute_handler log. |
40 |
* |
* |
48 |
{ |
{ |
49 |
struct ccs_request_info *r = &ee->r; |
struct ccs_request_info *r = &ee->r; |
50 |
const char *handler = ee->handler->name; |
const char *handler = ee->handler->name; |
51 |
r->mode = ccs_check_flags(r->cookie.u.domain, CCS_MAC_FOR_FILE); |
r->mode = ccs_get_mode(r->profile, CCS_MAC_FILE_EXECUTE); |
52 |
return ccs_write_audit_log(true, r, "%s %s\n", |
return ccs_write_audit_log(true, r, "%s %s\n", |
53 |
is_default ? KEYWORD_EXECUTE_HANDLER : |
is_default ? CCS_KEYWORD_EXECUTE_HANDLER : |
54 |
KEYWORD_DENIED_EXECUTE_HANDLER, handler); |
CCS_KEYWORD_DENIED_EXECUTE_HANDLER, handler); |
55 |
} |
} |
56 |
|
|
57 |
/** |
/** |
65 |
{ |
{ |
66 |
int error; |
int error; |
67 |
struct ccs_request_info r; |
struct ccs_request_info r; |
68 |
ccs_init_request_info(&r, domain, CCS_MAC_FOR_FILE); |
ccs_init_request_info(&r, domain, CCS_MAC_FILE_EXECUTE); |
69 |
error = ccs_write_audit_log(false, &r, "use_profile %u\n", r.profile); |
error = ccs_write_audit_log(false, &r, "use_profile %u\n", r.profile); |
|
ccs_exit_request_info(&r); |
|
70 |
return error; |
return error; |
71 |
} |
} |
72 |
|
|
90 |
{ |
{ |
91 |
struct ccs_domain_initializer_entry *entry = NULL; |
struct ccs_domain_initializer_entry *entry = NULL; |
92 |
struct ccs_domain_initializer_entry *ptr; |
struct ccs_domain_initializer_entry *ptr; |
93 |
const struct ccs_path_info *saved_program; |
struct ccs_domain_initializer_entry e = { .is_not = is_not }; |
|
const struct ccs_path_info *saved_domainname = NULL; |
|
94 |
int error = is_delete ? -ENOENT : -ENOMEM; |
int error = is_delete ? -ENOENT : -ENOMEM; |
|
bool is_last_name = false; |
|
95 |
if (!ccs_is_correct_path(program, 1, -1, -1)) |
if (!ccs_is_correct_path(program, 1, -1, -1)) |
96 |
return -EINVAL; /* No patterns allowed. */ |
return -EINVAL; /* No patterns allowed. */ |
97 |
if (domainname) { |
if (domainname) { |
98 |
if (!ccs_is_domain_def(domainname) && |
if (!ccs_is_domain_def(domainname) && |
99 |
ccs_is_correct_path(domainname, 1, -1, -1)) |
ccs_is_correct_path(domainname, 1, -1, -1)) |
100 |
is_last_name = true; |
e.is_last_name = true; |
101 |
else if (!ccs_is_correct_domain(domainname)) |
else if (!ccs_is_correct_domain(domainname)) |
102 |
return -EINVAL; |
return -EINVAL; |
103 |
saved_domainname = ccs_get_name(domainname); |
e.domainname = ccs_get_name(domainname); |
104 |
if (!saved_domainname) |
if (!e.domainname) |
105 |
return -ENOMEM; |
goto out; |
|
} |
|
|
saved_program = ccs_get_name(program); |
|
|
if (!saved_program) { |
|
|
ccs_put_name(saved_domainname); |
|
|
return -ENOMEM; |
|
106 |
} |
} |
107 |
|
e.program = ccs_get_name(program); |
108 |
|
if (!e.program) |
109 |
|
goto out; |
110 |
if (!is_delete) |
if (!is_delete) |
111 |
entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
entry = kmalloc(sizeof(e), GFP_KERNEL); |
112 |
/***** WRITER SECTION START *****/ |
mutex_lock(&ccs_policy_lock); |
113 |
down_write(&ccs_policy_lock); |
list_for_each_entry_rcu(ptr, &ccs_domain_initializer_list, list) { |
114 |
list_for_each_entry(ptr, &ccs_domain_initializer_list, list) { |
if (ccs_memcmp(ptr, &e, offsetof(typeof(e), is_not), |
115 |
if (ptr->is_not != is_not || |
sizeof(e))) |
|
ptr->domainname != saved_domainname || |
|
|
ptr->program != saved_program) |
|
116 |
continue; |
continue; |
117 |
ptr->is_deleted = is_delete; |
ptr->is_deleted = is_delete; |
118 |
error = 0; |
error = 0; |
119 |
break; |
break; |
120 |
} |
} |
121 |
if (!is_delete && error && ccs_memory_ok(entry)) { |
if (!is_delete && error && ccs_commit_ok(entry, &e, sizeof(e))) { |
122 |
entry->domainname = saved_domainname; |
list_add_tail_rcu(&entry->list, &ccs_domain_initializer_list); |
|
saved_domainname = NULL; |
|
|
entry->program = saved_program; |
|
|
saved_program = NULL; |
|
|
entry->is_not = is_not; |
|
|
entry->is_last_name = is_last_name; |
|
|
list_add_tail(&entry->list, &ccs_domain_initializer_list); |
|
123 |
entry = NULL; |
entry = NULL; |
124 |
error = 0; |
error = 0; |
125 |
} |
} |
126 |
up_write(&ccs_policy_lock); |
mutex_unlock(&ccs_policy_lock); |
127 |
/***** WRITER SECTION END *****/ |
out: |
128 |
ccs_put_name(saved_domainname); |
ccs_put_name(e.domainname); |
129 |
ccs_put_name(saved_program); |
ccs_put_name(e.program); |
130 |
kfree(entry); |
kfree(entry); |
|
ccs_update_counter(CCS_UPDATES_COUNTER_EXCEPTION_POLICY); |
|
131 |
return error; |
return error; |
132 |
} |
} |
133 |
|
|
137 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
138 |
* |
* |
139 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
140 |
|
* |
141 |
|
* Caller holds ccs_read_lock(). |
142 |
*/ |
*/ |
143 |
bool ccs_read_domain_initializer_policy(struct ccs_io_buffer *head) |
bool ccs_read_domain_initializer_policy(struct ccs_io_buffer *head) |
144 |
{ |
{ |
145 |
struct list_head *pos; |
struct list_head *pos; |
146 |
bool done = true; |
bool done = true; |
147 |
/***** READER SECTION START *****/ |
list_for_each_cookie(pos, head->read_var2, |
148 |
down_read(&ccs_policy_lock); |
&ccs_domain_initializer_list) { |
|
list_for_each_cookie(pos, head->read_var2.u.list, |
|
|
&ccs_domain_initializer_list) { |
|
149 |
const char *no; |
const char *no; |
150 |
const char *from = ""; |
const char *from = ""; |
151 |
const char *domain = ""; |
const char *domain = ""; |
152 |
struct ccs_domain_initializer_entry *ptr; |
struct ccs_domain_initializer_entry *ptr; |
153 |
ptr = list_entry(pos, struct ccs_domain_initializer_entry, |
ptr = list_entry(pos, struct ccs_domain_initializer_entry, |
154 |
list); |
list); |
155 |
if (ptr->is_deleted) |
if (ptr->is_deleted) |
156 |
continue; |
continue; |
157 |
no = ptr->is_not ? "no_" : ""; |
no = ptr->is_not ? "no_" : ""; |
159 |
from = " from "; |
from = " from "; |
160 |
domain = ptr->domainname->name; |
domain = ptr->domainname->name; |
161 |
} |
} |
162 |
done = ccs_io_printf(head, |
done = ccs_io_printf(head, "%s" CCS_KEYWORD_INITIALIZE_DOMAIN |
163 |
"%s" KEYWORD_INITIALIZE_DOMAIN "%s%s%s\n", |
"%s%s%s\n", no, ptr->program->name, from, |
164 |
no, ptr->program->name, from, domain); |
domain); |
165 |
if (!done) |
if (!done) |
166 |
break; |
break; |
167 |
} |
} |
|
up_read(&ccs_policy_lock); |
|
|
/***** READER SECTION END *****/ |
|
168 |
return done; |
return done; |
169 |
} |
} |
170 |
|
|
199 |
* |
* |
200 |
* Returns true if executing @program reinitializes domain transition, |
* Returns true if executing @program reinitializes domain transition, |
201 |
* false otherwise. |
* false otherwise. |
202 |
|
* |
203 |
|
* Caller holds ccs_read_lock(). |
204 |
*/ |
*/ |
205 |
static bool ccs_is_domain_initializer(const struct ccs_path_info *domainname, |
static bool ccs_is_domain_initializer(const struct ccs_path_info *domainname, |
206 |
const struct ccs_path_info *program, |
const struct ccs_path_info *program, |
208 |
{ |
{ |
209 |
struct ccs_domain_initializer_entry *ptr; |
struct ccs_domain_initializer_entry *ptr; |
210 |
bool flag = false; |
bool flag = false; |
211 |
/***** READER SECTION START *****/ |
list_for_each_entry_rcu(ptr, &ccs_domain_initializer_list, list) { |
|
down_read(&ccs_policy_lock); |
|
|
list_for_each_entry(ptr, &ccs_domain_initializer_list, list) { |
|
212 |
if (ptr->is_deleted) |
if (ptr->is_deleted) |
213 |
continue; |
continue; |
214 |
if (ptr->domainname) { |
if (ptr->domainname) { |
228 |
} |
} |
229 |
flag = true; |
flag = true; |
230 |
} |
} |
|
up_read(&ccs_policy_lock); |
|
|
/***** READER SECTION END *****/ |
|
231 |
return flag; |
return flag; |
232 |
} |
} |
233 |
|
|
251 |
{ |
{ |
252 |
struct ccs_domain_keeper_entry *entry = NULL; |
struct ccs_domain_keeper_entry *entry = NULL; |
253 |
struct ccs_domain_keeper_entry *ptr; |
struct ccs_domain_keeper_entry *ptr; |
254 |
const struct ccs_path_info *saved_domainname; |
struct ccs_domain_keeper_entry e = { .is_not = is_not }; |
|
const struct ccs_path_info *saved_program = NULL; |
|
255 |
int error = is_delete ? -ENOENT : -ENOMEM; |
int error = is_delete ? -ENOENT : -ENOMEM; |
|
bool is_last_name = false; |
|
256 |
if (!ccs_is_domain_def(domainname) && |
if (!ccs_is_domain_def(domainname) && |
257 |
ccs_is_correct_path(domainname, 1, -1, -1)) |
ccs_is_correct_path(domainname, 1, -1, -1)) |
258 |
is_last_name = true; |
e.is_last_name = true; |
259 |
else if (!ccs_is_correct_domain(domainname)) |
else if (!ccs_is_correct_domain(domainname)) |
260 |
return -EINVAL; |
return -EINVAL; |
261 |
if (program) { |
if (program) { |
262 |
if (!ccs_is_correct_path(program, 1, -1, -1)) |
if (!ccs_is_correct_path(program, 1, -1, -1)) |
263 |
return -EINVAL; |
return -EINVAL; |
264 |
saved_program = ccs_get_name(program); |
e.program = ccs_get_name(program); |
265 |
if (!saved_program) |
if (!e.program) |
266 |
return -ENOMEM; |
goto out; |
|
} |
|
|
saved_domainname = ccs_get_name(domainname); |
|
|
if (!saved_domainname) { |
|
|
ccs_put_name(saved_program); |
|
|
return -ENOMEM; |
|
267 |
} |
} |
268 |
|
e.domainname = ccs_get_name(domainname); |
269 |
|
if (!e.domainname) |
270 |
|
goto out; |
271 |
if (!is_delete) |
if (!is_delete) |
272 |
entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
entry = kmalloc(sizeof(e), GFP_KERNEL); |
273 |
/***** WRITER SECTION START *****/ |
mutex_lock(&ccs_policy_lock); |
274 |
down_write(&ccs_policy_lock); |
list_for_each_entry_rcu(ptr, &ccs_domain_keeper_list, list) { |
275 |
list_for_each_entry(ptr, &ccs_domain_keeper_list, list) { |
if (ccs_memcmp(ptr, &e, offsetof(typeof(e), is_not), |
276 |
if (ptr->is_not != is_not || |
sizeof(e))) |
|
ptr->domainname != saved_domainname || |
|
|
ptr->program != saved_program) |
|
277 |
continue; |
continue; |
278 |
ptr->is_deleted = is_delete; |
ptr->is_deleted = is_delete; |
279 |
error = 0; |
error = 0; |
280 |
break; |
break; |
281 |
} |
} |
282 |
if (!is_delete && error && ccs_memory_ok(entry)) { |
if (!is_delete && error && ccs_commit_ok(entry, &e, sizeof(e))) { |
283 |
entry->domainname = saved_domainname; |
list_add_tail_rcu(&entry->list, &ccs_domain_keeper_list); |
|
saved_domainname = NULL; |
|
|
entry->program = saved_program; |
|
|
saved_program = NULL; |
|
|
entry->is_not = is_not; |
|
|
entry->is_last_name = is_last_name; |
|
|
list_add_tail(&entry->list, &ccs_domain_keeper_list); |
|
284 |
entry = NULL; |
entry = NULL; |
285 |
error = 0; |
error = 0; |
286 |
} |
} |
287 |
up_write(&ccs_policy_lock); |
mutex_unlock(&ccs_policy_lock); |
288 |
/***** WRITER SECTION END *****/ |
out: |
289 |
ccs_put_name(saved_domainname); |
ccs_put_name(e.domainname); |
290 |
ccs_put_name(saved_program); |
ccs_put_name(e.program); |
291 |
kfree(entry); |
kfree(entry); |
|
ccs_update_counter(CCS_UPDATES_COUNTER_EXCEPTION_POLICY); |
|
292 |
return error; |
return error; |
293 |
} |
} |
294 |
|
|
318 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
319 |
* |
* |
320 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
321 |
|
* |
322 |
|
* Caller holds ccs_read_lock(). |
323 |
*/ |
*/ |
324 |
bool ccs_read_domain_keeper_policy(struct ccs_io_buffer *head) |
bool ccs_read_domain_keeper_policy(struct ccs_io_buffer *head) |
325 |
{ |
{ |
326 |
struct list_head *pos; |
struct list_head *pos; |
327 |
bool done = true; |
bool done = true; |
328 |
/***** READER SECTION START *****/ |
list_for_each_cookie(pos, head->read_var2, |
329 |
down_read(&ccs_policy_lock); |
&ccs_domain_keeper_list) { |
|
list_for_each_cookie(pos, head->read_var2.u.list, |
|
|
&ccs_domain_keeper_list) { |
|
330 |
struct ccs_domain_keeper_entry *ptr; |
struct ccs_domain_keeper_entry *ptr; |
331 |
const char *no; |
const char *no; |
332 |
const char *from = ""; |
const char *from = ""; |
339 |
from = " from "; |
from = " from "; |
340 |
program = ptr->program->name; |
program = ptr->program->name; |
341 |
} |
} |
342 |
done = ccs_io_printf(head, |
done = ccs_io_printf(head, "%s" CCS_KEYWORD_KEEP_DOMAIN |
343 |
"%s" KEYWORD_KEEP_DOMAIN "%s%s%s\n", no, |
"%s%s%s\n", no, program, from, |
344 |
program, from, ptr->domainname->name); |
ptr->domainname->name); |
345 |
if (!done) |
if (!done) |
346 |
break; |
break; |
347 |
} |
} |
|
up_read(&ccs_policy_lock); |
|
|
/***** READER SECTION END *****/ |
|
348 |
return done; |
return done; |
349 |
} |
} |
350 |
|
|
357 |
* |
* |
358 |
* Returns true if executing @program supresses domain transition, |
* Returns true if executing @program supresses domain transition, |
359 |
* false otherwise. |
* false otherwise. |
360 |
|
* |
361 |
|
* Caller holds ccs_read_lock(). |
362 |
*/ |
*/ |
363 |
static bool ccs_is_domain_keeper(const struct ccs_path_info *domainname, |
static bool ccs_is_domain_keeper(const struct ccs_path_info *domainname, |
364 |
const struct ccs_path_info *program, |
const struct ccs_path_info *program, |
366 |
{ |
{ |
367 |
struct ccs_domain_keeper_entry *ptr; |
struct ccs_domain_keeper_entry *ptr; |
368 |
bool flag = false; |
bool flag = false; |
369 |
/***** READER SECTION START *****/ |
list_for_each_entry_rcu(ptr, &ccs_domain_keeper_list, list) { |
|
down_read(&ccs_policy_lock); |
|
|
list_for_each_entry(ptr, &ccs_domain_keeper_list, list) { |
|
370 |
if (ptr->is_deleted) |
if (ptr->is_deleted) |
371 |
continue; |
continue; |
372 |
if (!ptr->is_last_name) { |
if (!ptr->is_last_name) { |
384 |
} |
} |
385 |
flag = true; |
flag = true; |
386 |
} |
} |
|
up_read(&ccs_policy_lock); |
|
|
/***** READER SECTION END *****/ |
|
387 |
return flag; |
return flag; |
388 |
} |
} |
389 |
|
|
|
/* The list for "struct ccs_alias_entry". */ |
|
|
LIST_HEAD(ccs_alias_list); |
|
|
|
|
|
/** |
|
|
* ccs_update_alias_entry - Update "struct ccs_alias_entry" list. |
|
|
* |
|
|
* @original_name: The original program's real name. |
|
|
* @aliased_name: The symbolic program's symbolic link's name. |
|
|
* @is_delete: True if it is a delete request. |
|
|
* |
|
|
* Returns 0 on success, negative value otherwise. |
|
|
*/ |
|
|
static int ccs_update_alias_entry(const char *original_name, |
|
|
const char *aliased_name, |
|
|
const bool is_delete) |
|
|
{ |
|
|
struct ccs_alias_entry *entry = NULL; |
|
|
struct ccs_alias_entry *ptr; |
|
|
const struct ccs_path_info *saved_original_name; |
|
|
const struct ccs_path_info *saved_aliased_name; |
|
|
int error = is_delete ? -ENOENT : -ENOMEM; |
|
|
if (!ccs_is_correct_path(original_name, 1, -1, -1) || |
|
|
!ccs_is_correct_path(aliased_name, 1, -1, -1)) |
|
|
return -EINVAL; /* No patterns allowed. */ |
|
|
saved_original_name = ccs_get_name(original_name); |
|
|
saved_aliased_name = ccs_get_name(aliased_name); |
|
|
if (!saved_original_name || !saved_aliased_name) { |
|
|
ccs_put_name(saved_original_name); |
|
|
ccs_put_name(saved_aliased_name); |
|
|
return -ENOMEM; |
|
|
} |
|
|
if (!is_delete) |
|
|
entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
|
|
/***** WRITER SECTION START *****/ |
|
|
down_write(&ccs_policy_lock); |
|
|
list_for_each_entry(ptr, &ccs_alias_list, list) { |
|
|
if (ptr->original_name != saved_original_name || |
|
|
ptr->aliased_name != saved_aliased_name) |
|
|
continue; |
|
|
ptr->is_deleted = is_delete; |
|
|
error = 0; |
|
|
break; |
|
|
} |
|
|
if (!is_delete && error && ccs_memory_ok(entry)) { |
|
|
entry->original_name = saved_original_name; |
|
|
saved_original_name = NULL; |
|
|
entry->aliased_name = saved_aliased_name; |
|
|
saved_aliased_name = NULL; |
|
|
list_add_tail(&entry->list, &ccs_alias_list); |
|
|
entry = NULL; |
|
|
error = 0; |
|
|
} |
|
|
up_write(&ccs_policy_lock); |
|
|
/***** WRITER SECTION END *****/ |
|
|
ccs_put_name(saved_original_name); |
|
|
ccs_put_name(saved_aliased_name); |
|
|
kfree(entry); |
|
|
ccs_update_counter(CCS_UPDATES_COUNTER_EXCEPTION_POLICY); |
|
|
return error; |
|
|
} |
|
|
|
|
|
/** |
|
|
* ccs_read_alias_policy - Read "struct ccs_alias_entry" list. |
|
|
* |
|
|
* @head: Pointer to "struct ccs_io_buffer". |
|
|
* |
|
|
* Returns true on success, false otherwise. |
|
|
*/ |
|
|
bool ccs_read_alias_policy(struct ccs_io_buffer *head) |
|
|
{ |
|
|
struct list_head *pos; |
|
|
bool done = true; |
|
|
/***** READER SECTION START *****/ |
|
|
down_read(&ccs_policy_lock); |
|
|
list_for_each_cookie(pos, head->read_var2.u.list, &ccs_alias_list) { |
|
|
struct ccs_alias_entry *ptr; |
|
|
ptr = list_entry(pos, struct ccs_alias_entry, list); |
|
|
if (ptr->is_deleted) |
|
|
continue; |
|
|
done = ccs_io_printf(head, KEYWORD_ALIAS "%s %s\n", |
|
|
ptr->original_name->name, |
|
|
ptr->aliased_name->name); |
|
|
if (!done) |
|
|
break; |
|
|
} |
|
|
up_read(&ccs_policy_lock); |
|
|
/***** READER SECTION END *****/ |
|
|
return done; |
|
|
} |
|
|
|
|
|
/** |
|
|
* ccs_write_alias_policy - Write "struct ccs_alias_entry" list. |
|
|
* |
|
|
* @data: String to parse. |
|
|
* @is_delete: True if it is a delete request. |
|
|
* |
|
|
* Returns 0 on success, negative value otherwise. |
|
|
*/ |
|
|
int ccs_write_alias_policy(char *data, const bool is_delete) |
|
|
{ |
|
|
char *cp = strchr(data, ' '); |
|
|
if (!cp) |
|
|
return -EINVAL; |
|
|
*cp++ = '\0'; |
|
|
return ccs_update_alias_entry(data, cp, is_delete); |
|
|
} |
|
|
|
|
390 |
/* The list for "struct ccs_aggregator_entry". */ |
/* The list for "struct ccs_aggregator_entry". */ |
391 |
LIST_HEAD(ccs_aggregator_list); |
LIST_HEAD(ccs_aggregator_list); |
392 |
|
|
405 |
{ |
{ |
406 |
struct ccs_aggregator_entry *entry = NULL; |
struct ccs_aggregator_entry *entry = NULL; |
407 |
struct ccs_aggregator_entry *ptr; |
struct ccs_aggregator_entry *ptr; |
408 |
const struct ccs_path_info *saved_original_name; |
struct ccs_aggregator_entry e = { }; |
|
const struct ccs_path_info *saved_aggregated_name; |
|
409 |
int error = is_delete ? -ENOENT : -ENOMEM; |
int error = is_delete ? -ENOENT : -ENOMEM; |
410 |
if (!ccs_is_correct_path(original_name, 1, 0, -1) || |
if (!ccs_is_correct_path(original_name, 1, 0, -1) || |
411 |
!ccs_is_correct_path(aggregated_name, 1, -1, -1)) |
!ccs_is_correct_path(aggregated_name, 1, -1, -1)) |
412 |
return -EINVAL; |
return -EINVAL; |
413 |
saved_original_name = ccs_get_name(original_name); |
e.original_name = ccs_get_name(original_name); |
414 |
saved_aggregated_name = ccs_get_name(aggregated_name); |
e.aggregated_name = ccs_get_name(aggregated_name); |
415 |
if (!saved_original_name || !saved_aggregated_name) { |
if (!e.original_name || !e.aggregated_name) |
416 |
ccs_put_name(saved_original_name); |
goto out; |
|
ccs_put_name(saved_aggregated_name); |
|
|
return -ENOMEM; |
|
|
} |
|
417 |
if (!is_delete) |
if (!is_delete) |
418 |
entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
entry = kmalloc(sizeof(e), GFP_KERNEL); |
419 |
/***** WRITER SECTION START *****/ |
mutex_lock(&ccs_policy_lock); |
420 |
down_write(&ccs_policy_lock); |
list_for_each_entry_rcu(ptr, &ccs_aggregator_list, list) { |
421 |
list_for_each_entry(ptr, &ccs_aggregator_list, list) { |
if (ccs_memcmp(ptr, &e, offsetof(typeof(e), original_name), |
422 |
if (ptr->original_name != saved_original_name || |
sizeof(e))) |
|
ptr->aggregated_name != saved_aggregated_name) |
|
423 |
continue; |
continue; |
424 |
ptr->is_deleted = is_delete; |
ptr->is_deleted = is_delete; |
425 |
error = 0; |
error = 0; |
426 |
break; |
break; |
427 |
} |
} |
428 |
if (!is_delete && error && ccs_memory_ok(entry)) { |
if (!is_delete && error && ccs_commit_ok(entry, &e, sizeof(e))) { |
429 |
entry->original_name = saved_original_name; |
list_add_tail_rcu(&entry->list, &ccs_aggregator_list); |
|
saved_original_name = NULL; |
|
|
entry->aggregated_name = saved_aggregated_name; |
|
|
saved_aggregated_name = NULL; |
|
|
list_add_tail(&entry->list, &ccs_aggregator_list); |
|
430 |
entry = NULL; |
entry = NULL; |
431 |
error = 0; |
error = 0; |
432 |
} |
} |
433 |
up_write(&ccs_policy_lock); |
mutex_unlock(&ccs_policy_lock); |
434 |
/***** WRITER SECTION END *****/ |
out: |
435 |
ccs_put_name(saved_original_name); |
ccs_put_name(e.original_name); |
436 |
ccs_put_name(saved_aggregated_name); |
ccs_put_name(e.aggregated_name); |
437 |
kfree(entry); |
kfree(entry); |
|
ccs_update_counter(CCS_UPDATES_COUNTER_EXCEPTION_POLICY); |
|
438 |
return error; |
return error; |
439 |
} |
} |
440 |
|
|
444 |
* @head: Pointer to "struct ccs_io_buffer". |
* @head: Pointer to "struct ccs_io_buffer". |
445 |
* |
* |
446 |
* Returns true on success, false otherwise. |
* Returns true on success, false otherwise. |
447 |
|
* |
448 |
|
* Caller holds ccs_read_lock(). |
449 |
*/ |
*/ |
450 |
bool ccs_read_aggregator_policy(struct ccs_io_buffer *head) |
bool ccs_read_aggregator_policy(struct ccs_io_buffer *head) |
451 |
{ |
{ |
452 |
struct list_head *pos; |
struct list_head *pos; |
453 |
bool done = true; |
bool done = true; |
454 |
/***** READER SECTION START *****/ |
list_for_each_cookie(pos, head->read_var2, &ccs_aggregator_list) { |
|
down_read(&ccs_policy_lock); |
|
|
list_for_each_cookie(pos, head->read_var2.u.list, |
|
|
&ccs_aggregator_list) { |
|
455 |
struct ccs_aggregator_entry *ptr; |
struct ccs_aggregator_entry *ptr; |
456 |
ptr = list_entry(pos, struct ccs_aggregator_entry, list); |
ptr = list_entry(pos, struct ccs_aggregator_entry, list); |
457 |
if (ptr->is_deleted) |
if (ptr->is_deleted) |
458 |
continue; |
continue; |
459 |
done = ccs_io_printf(head, KEYWORD_AGGREGATOR "%s %s\n", |
done = ccs_io_printf(head, CCS_KEYWORD_AGGREGATOR "%s %s\n", |
460 |
ptr->original_name->name, |
ptr->original_name->name, |
461 |
ptr->aggregated_name->name); |
ptr->aggregated_name->name); |
462 |
if (!done) |
if (!done) |
463 |
break; |
break; |
464 |
} |
} |
|
up_read(&ccs_policy_lock); |
|
|
/***** READER SECTION END *****/ |
|
465 |
return done; |
return done; |
466 |
} |
} |
467 |
|
|
475 |
*/ |
*/ |
476 |
int ccs_write_aggregator_policy(char *data, const bool is_delete) |
int ccs_write_aggregator_policy(char *data, const bool is_delete) |
477 |
{ |
{ |
478 |
char *cp = strchr(data, ' '); |
char *w[2]; |
479 |
if (!cp) |
if (!ccs_tokenize(data, w, sizeof(w)) || !w[1][0]) |
480 |
return -EINVAL; |
return -EINVAL; |
481 |
*cp++ = '\0'; |
return ccs_update_aggregator_entry(w[0], w[1], is_delete); |
|
return ccs_update_aggregator_entry(data, cp, is_delete); |
|
482 |
} |
} |
483 |
|
|
484 |
/* Domain create/delete handler. */ |
/* Domain create/delete handler. */ |
496 |
struct ccs_path_info name; |
struct ccs_path_info name; |
497 |
name.name = domainname; |
name.name = domainname; |
498 |
ccs_fill_path_info(&name); |
ccs_fill_path_info(&name); |
499 |
/***** WRITER SECTION START *****/ |
mutex_lock(&ccs_policy_lock); |
|
down_write(&ccs_policy_lock); |
|
500 |
/* Is there an active domain? */ |
/* Is there an active domain? */ |
501 |
list_for_each_entry(domain, &ccs_domain_list, list) { |
list_for_each_entry_rcu(domain, &ccs_domain_list, list) { |
502 |
/* Never delete ccs_kernel_domain */ |
/* Never delete ccs_kernel_domain */ |
503 |
if (domain == &ccs_kernel_domain) |
if (domain == &ccs_kernel_domain) |
504 |
continue; |
continue; |
508 |
domain->is_deleted = true; |
domain->is_deleted = true; |
509 |
break; |
break; |
510 |
} |
} |
511 |
up_write(&ccs_policy_lock); |
mutex_unlock(&ccs_policy_lock); |
|
/***** WRITER SECTION END *****/ |
|
512 |
return 0; |
return 0; |
513 |
} |
} |
514 |
|
|
517 |
* |
* |
518 |
* @domainname: The name of domain. |
* @domainname: The name of domain. |
519 |
* @profile: Profile number to assign if the domain was newly created. |
* @profile: Profile number to assign if the domain was newly created. |
|
* @cookie: Pointer to "struct ccs_cookie". |
|
520 |
* |
* |
521 |
* Returns true on success, false otherwise. |
* Returns pointer to "struct ccs_domain_info" on success, NULL otherwise. |
522 |
*/ |
*/ |
523 |
bool ccs_find_or_assign_new_domain(const char *domainname, const u8 profile, |
struct ccs_domain_info *ccs_find_or_assign_new_domain(const char *domainname, |
524 |
struct ccs_cookie *cookie) |
const u8 profile) |
525 |
{ |
{ |
526 |
struct ccs_domain_info *entry; |
struct ccs_domain_info *entry; |
527 |
struct ccs_domain_info *domain; |
struct ccs_domain_info *domain; |
528 |
const struct ccs_path_info *saved_domainname; |
const struct ccs_path_info *saved_domainname; |
529 |
cookie->u.domain = NULL; |
bool found = false; |
530 |
|
|
531 |
if (!ccs_is_correct_domain(domainname)) |
if (!ccs_is_correct_domain(domainname)) |
532 |
return false; |
return NULL; |
533 |
saved_domainname = ccs_get_name(domainname); |
saved_domainname = ccs_get_name(domainname); |
534 |
if (!saved_domainname) |
if (!saved_domainname) |
535 |
return false; |
return NULL; |
536 |
entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
entry = kzalloc(sizeof(*entry), GFP_KERNEL); |
537 |
/***** WRITER SECTION START *****/ |
mutex_lock(&ccs_policy_lock); |
538 |
down_write(&ccs_policy_lock); |
list_for_each_entry_rcu(domain, &ccs_domain_list, list) { |
|
list_for_each_entry(domain, &ccs_domain_list, list) { |
|
539 |
if (domain->is_deleted || |
if (domain->is_deleted || |
540 |
ccs_pathcmp(saved_domainname, domain->domainname)) |
ccs_pathcmp(saved_domainname, domain->domainname)) |
541 |
continue; |
continue; |
542 |
cookie->u.domain = domain; |
found = true; |
543 |
break; |
break; |
544 |
} |
} |
545 |
if (!cookie->u.domain && ccs_memory_ok(entry)) { |
if (!found && ccs_memory_ok(entry, sizeof(*entry))) { |
546 |
INIT_LIST_HEAD(&entry->acl_info_list); |
INIT_LIST_HEAD(&entry->acl_info_list); |
547 |
entry->domainname = saved_domainname; |
entry->domainname = saved_domainname; |
548 |
saved_domainname = NULL; |
saved_domainname = NULL; |
549 |
entry->profile = profile; |
entry->profile = profile; |
550 |
list_add_tail(&entry->list, &ccs_domain_list); |
list_add_tail_rcu(&entry->list, &ccs_domain_list); |
551 |
cookie->u.domain = entry; |
domain = entry; |
552 |
entry = NULL; |
entry = NULL; |
553 |
|
found = true; |
554 |
} |
} |
555 |
up_write(&ccs_policy_lock); |
mutex_unlock(&ccs_policy_lock); |
|
/***** WRITER SECTION END *****/ |
|
556 |
ccs_put_name(saved_domainname); |
ccs_put_name(saved_domainname); |
557 |
kfree(entry); |
kfree(entry); |
558 |
return cookie->u.domain != NULL; |
return found ? domain : NULL; |
|
} |
|
|
|
|
|
/** |
|
|
* ccs_get_argv0 - Get argv[0]. |
|
|
* |
|
|
* @ee: Pointer to "struct ccs_execve_entry". |
|
|
* |
|
|
* Returns true on success, false otherwise. |
|
|
*/ |
|
|
static bool ccs_get_argv0(struct ccs_execve_entry *ee) |
|
|
{ |
|
|
struct linux_binprm *bprm = ee->bprm; |
|
|
char *arg_ptr = ee->tmp; |
|
|
int arg_len = 0; |
|
|
unsigned long pos = bprm->p; |
|
|
int offset = pos % PAGE_SIZE; |
|
|
bool done = false; |
|
|
if (!bprm->argc) |
|
|
goto out; |
|
|
while (1) { |
|
|
if (!ccs_dump_page(bprm, pos, &ee->dump)) |
|
|
goto out; |
|
|
pos += PAGE_SIZE - offset; |
|
|
/* Read. */ |
|
|
while (offset < PAGE_SIZE) { |
|
|
const char *kaddr = ee->dump.data; |
|
|
const unsigned char c = kaddr[offset++]; |
|
|
if (c && arg_len < CCS_MAX_PATHNAME_LEN - 10) { |
|
|
if (c == '\\') { |
|
|
arg_ptr[arg_len++] = '\\'; |
|
|
arg_ptr[arg_len++] = '\\'; |
|
|
} else if (c == '/') { |
|
|
arg_len = 0; |
|
|
} else if (c > ' ' && c < 127) { |
|
|
arg_ptr[arg_len++] = c; |
|
|
} else { |
|
|
arg_ptr[arg_len++] = '\\'; |
|
|
arg_ptr[arg_len++] = (c >> 6) + '0'; |
|
|
arg_ptr[arg_len++] |
|
|
= ((c >> 3) & 7) + '0'; |
|
|
arg_ptr[arg_len++] = (c & 7) + '0'; |
|
|
} |
|
|
} else { |
|
|
arg_ptr[arg_len] = '\0'; |
|
|
done = true; |
|
|
break; |
|
|
} |
|
|
} |
|
|
offset = 0; |
|
|
if (done) |
|
|
break; |
|
|
} |
|
|
return true; |
|
|
out: |
|
|
return false; |
|
559 |
} |
} |
560 |
|
|
561 |
/** |
/** |
564 |
* @ee: Pointer to "struct ccs_execve_entry". |
* @ee: Pointer to "struct ccs_execve_entry". |
565 |
* |
* |
566 |
* Returns 0 on success, negative value otherwise. |
* Returns 0 on success, negative value otherwise. |
567 |
|
* |
568 |
|
* Caller holds ccs_read_lock(). |
569 |
*/ |
*/ |
570 |
static int ccs_find_next_domain(struct ccs_execve_entry *ee) |
static int ccs_find_next_domain(struct ccs_execve_entry *ee) |
571 |
{ |
{ |
572 |
struct ccs_request_info *r = &ee->r; |
struct ccs_request_info *r = &ee->r; |
573 |
const struct ccs_path_info *handler = ee->handler; |
const struct ccs_path_info *handler = ee->handler; |
574 |
const char *old_domain_name = r->cookie.u.domain->domainname->name; |
struct ccs_domain_info *domain = NULL; |
575 |
|
const char *old_domain_name = r->domain->domainname->name; |
576 |
struct linux_binprm *bprm = ee->bprm; |
struct linux_binprm *bprm = ee->bprm; |
|
const u8 mode = r->mode; |
|
|
const bool is_enforce = (mode == 3); |
|
577 |
const u32 ccs_flags = current->ccs_flags; |
const u32 ccs_flags = current->ccs_flags; |
578 |
char *new_domain_name = NULL; |
struct ccs_path_info rn = { }; /* real name */ |
|
struct ccs_path_info rn; /* real name */ |
|
|
struct ccs_path_info sn; /* symlink name */ |
|
579 |
struct ccs_path_info ln; /* last name */ |
struct ccs_path_info ln; /* last name */ |
580 |
int retval; |
int retval; |
581 |
bool found = false; |
bool need_kfree = false; |
582 |
|
ln.name = ccs_last_word(old_domain_name); |
583 |
|
ccs_fill_path_info(&ln); |
584 |
retry: |
retry: |
585 |
current->ccs_flags = ccs_flags; |
current->ccs_flags = ccs_flags; |
586 |
r->condition_cookie.u.cond = NULL; |
r->cond = NULL; |
587 |
/* Get realpath of program and symbolic link. */ |
if (need_kfree) { |
588 |
retval = ccs_realpath_both(bprm->filename, ee); |
kfree(rn.name); |
589 |
|
need_kfree = false; |
590 |
|
} |
591 |
|
|
592 |
|
/* Get symlink's pathname of program. */ |
593 |
|
retval = ccs_symlink_path(bprm->filename, &rn); |
594 |
if (retval < 0) |
if (retval < 0) |
595 |
goto out; |
goto out; |
596 |
|
need_kfree = true; |
|
rn.name = ee->program_path; |
|
|
ccs_fill_path_info(&rn); |
|
|
sn.name = ee->tmp; |
|
|
ccs_fill_path_info(&sn); |
|
|
ln.name = ccs_get_last_name(r->cookie.u.domain); |
|
|
ccs_fill_path_info(&ln); |
|
597 |
|
|
598 |
if (handler) { |
if (handler) { |
599 |
if (ccs_pathcmp(&rn, handler)) { |
if (ccs_pathcmp(&rn, handler)) { |
606 |
} |
} |
607 |
goto out; |
goto out; |
608 |
} |
} |
609 |
goto calculate_domain; |
} else { |
|
} |
|
|
|
|
|
/* Check 'alias' directive. */ |
|
|
if (ccs_pathcmp(&rn, &sn)) { |
|
|
struct ccs_alias_entry *ptr; |
|
|
/* Is this program allowed to be called via symbolic links? */ |
|
|
/***** READER SECTION START *****/ |
|
|
down_read(&ccs_policy_lock); |
|
|
list_for_each_entry(ptr, &ccs_alias_list, list) { |
|
|
if (ptr->is_deleted || |
|
|
ccs_pathcmp(&rn, ptr->original_name) || |
|
|
ccs_pathcmp(&sn, ptr->aliased_name)) |
|
|
continue; |
|
|
strncpy(ee->program_path, ptr->aliased_name->name, |
|
|
CCS_MAX_PATHNAME_LEN - 1); |
|
|
ccs_fill_path_info(&rn); |
|
|
break; |
|
|
} |
|
|
up_read(&ccs_policy_lock); |
|
|
/***** READER SECTION END *****/ |
|
|
} |
|
|
/* sn will be overwritten after here. */ |
|
|
|
|
|
/* Compare basename of program_path and argv[0] */ |
|
|
r->mode = ccs_check_flags(r->cookie.u.domain, CCS_MAC_FOR_ARGV0); |
|
|
if (bprm->argc > 0 && r->mode) { |
|
|
char *base_argv0 = ee->tmp; |
|
|
const char *base_filename; |
|
|
retval = -ENOMEM; |
|
|
if (!ccs_get_argv0(ee)) |
|
|
goto out; |
|
|
base_filename = strrchr(ee->program_path, '/'); |
|
|
if (!base_filename) |
|
|
base_filename = ee->program_path; |
|
|
else |
|
|
base_filename++; |
|
|
if (strcmp(base_argv0, base_filename)) { |
|
|
retval = ccs_check_argv0_perm(r, &rn, base_argv0); |
|
|
if (retval == 1) |
|
|
goto retry; |
|
|
if (retval < 0) |
|
|
goto out; |
|
|
} |
|
|
} |
|
|
|
|
|
/* Check 'aggregator' directive. */ |
|
|
{ |
|
610 |
struct ccs_aggregator_entry *ptr; |
struct ccs_aggregator_entry *ptr; |
611 |
/* Is this program allowed to be aggregated? */ |
/* Check 'aggregator' directive. */ |
612 |
/***** READER SECTION START *****/ |
list_for_each_entry_rcu(ptr, &ccs_aggregator_list, list) { |
|
down_read(&ccs_policy_lock); |
|
|
list_for_each_entry(ptr, &ccs_aggregator_list, list) { |
|
613 |
if (ptr->is_deleted || |
if (ptr->is_deleted || |
614 |
!ccs_path_matches_pattern(&rn, ptr->original_name)) |
!ccs_path_matches_pattern(&rn, ptr->original_name)) |
615 |
continue; |
continue; |
616 |
strncpy(ee->program_path, ptr->aggregated_name->name, |
kfree(rn.name); |
617 |
CCS_MAX_PATHNAME_LEN - 1); |
need_kfree = false; |
618 |
ccs_fill_path_info(&rn); |
/* This is OK because it is read only. */ |
619 |
|
rn = *ptr->aggregated_name; |
620 |
break; |
break; |
621 |
} |
} |
|
up_read(&ccs_policy_lock); |
|
|
/***** READER SECTION END *****/ |
|
|
} |
|
622 |
|
|
623 |
/* Check execute permission. */ |
/* Check execute permission. */ |
624 |
r->mode = mode; |
retval = ccs_exec_perm(r, &rn); |
625 |
retval = ccs_check_exec_perm(r, &rn); |
if (retval == 1) |
626 |
if (retval == 1) |
goto retry; |
627 |
goto retry; |
if (retval < 0) |
628 |
if (retval < 0) |
goto out; |
629 |
goto out; |
} |
630 |
|
|
631 |
calculate_domain: |
/* Calculate domain to transit to. */ |
632 |
new_domain_name = ee->tmp; |
if (ccs_is_domain_initializer(r->domain->domainname, &rn, &ln)) { |
|
if (ccs_is_domain_initializer(r->cookie.u.domain->domainname, &rn, |
|
|
&ln)) { |
|
633 |
/* Transit to the child of ccs_kernel_domain domain. */ |
/* Transit to the child of ccs_kernel_domain domain. */ |
634 |
snprintf(new_domain_name, CCS_EXEC_TMPSIZE - 1, |
snprintf(ee->tmp, CCS_EXEC_TMPSIZE - 1, ROOT_NAME " " "%s", |
635 |
ROOT_NAME " " "%s", ee->program_path); |
rn.name); |
636 |
} else if (r->cookie.u.domain == &ccs_kernel_domain && |
} else if (r->domain == &ccs_kernel_domain && !ccs_policy_loaded) { |
|
!ccs_policy_loaded) { |
|
637 |
/* |
/* |
638 |
* Needn't to transit from kernel domain before starting |
* Needn't to transit from kernel domain before starting |
639 |
* /sbin/init. But transit from kernel domain if executing |
* /sbin/init. But transit from kernel domain if executing |
640 |
* initializers because they might start before /sbin/init. |
* initializers because they might start before /sbin/init. |
641 |
*/ |
*/ |
642 |
found = true; |
domain = r->domain; |
643 |
} else if (ccs_is_domain_keeper(r->cookie.u.domain->domainname, &rn, &ln)) { |
} else if (ccs_is_domain_keeper(r->domain->domainname, &rn, &ln)) { |
644 |
/* Keep current domain. */ |
/* Keep current domain. */ |
645 |
found = true; |
domain = r->domain; |
646 |
} else { |
} else { |
647 |
/* Normal domain transition. */ |
/* Normal domain transition. */ |
648 |
snprintf(new_domain_name, CCS_EXEC_TMPSIZE - 1, |
snprintf(ee->tmp, CCS_EXEC_TMPSIZE - 1, "%s %s", |
649 |
"%s %s", old_domain_name, ee->program_path); |
old_domain_name, rn.name); |
650 |
} |
} |
651 |
if (found || strlen(new_domain_name) >= CCS_MAX_PATHNAME_LEN) |
if (domain || strlen(ee->tmp) >= CCS_EXEC_TMPSIZE - 10) |
652 |
goto done; |
goto done; |
653 |
found = ccs_find_domain(new_domain_name, &r->cookie); |
domain = ccs_find_domain(ee->tmp); |
654 |
if (found) |
if (domain) |
655 |
goto done; |
goto done; |
656 |
if (is_enforce) { |
if (r->mode == CCS_MAC_MODE_ENFORCING) { |
657 |
int error = ccs_check_supervisor(r, |
int error = ccs_supervisor(r, "# wants to create domain\n" |
658 |
"# wants to create domain\n" |
"%s\n", ee->tmp); |
|
"%s\n", new_domain_name); |
|
659 |
if (error == 1) |
if (error == 1) |
660 |
goto retry; |
goto retry; |
661 |
if (error < 0) |
if (error < 0) |
662 |
goto done; |
goto done; |
663 |
} |
} |
664 |
found = ccs_find_or_assign_new_domain(new_domain_name, r->profile, |
domain = ccs_find_or_assign_new_domain(ee->tmp, r->profile); |
665 |
&r->cookie); |
if (domain) |
666 |
if (found) |
ccs_audit_domain_creation_log(r->domain); |
|
ccs_audit_domain_creation_log(r->cookie.u.domain); |
|
667 |
done: |
done: |
668 |
if (found) { |
if (!domain) { |
669 |
retval = 0; |
printk(KERN_WARNING "ERROR: Domain '%s' not defined.\n", |
670 |
goto out; |
ee->tmp); |
671 |
} |
if (r->mode == CCS_MAC_MODE_ENFORCING) |
672 |
printk(KERN_WARNING "TOMOYO-ERROR: Domain '%s' not defined.\n", |
retval = -EPERM; |
673 |
new_domain_name); |
else { |
674 |
if (is_enforce) |
retval = 0; |
675 |
retval = -EPERM; |
r->domain->domain_transition_failed = true; |
676 |
else { |
} |
677 |
|
} else { |
678 |
retval = 0; |
retval = 0; |
|
r->cookie.u.domain->domain_transition_failed = true; |
|
679 |
} |
} |
680 |
out: |
out: |
681 |
|
if (domain) |
682 |
|
r->domain = domain; |
683 |
|
if (need_kfree) |
684 |
|
kfree(rn.name); |
685 |
return retval; |
return retval; |
686 |
} |
} |
687 |
|
|
688 |
/** |
/** |
689 |
* ccs_check_environ - Check permission for environment variable names. |
* ccs_environ - Check permission for environment variable names. |
690 |
* |
* |
691 |
* @ee: Pointer to "struct ccs_execve_entry". |
* @ee: Pointer to "struct ccs_execve_entry". |
692 |
* |
* |
693 |
* Returns 0 on success, negative value otherwise. |
* Returns 0 on success, negative value otherwise. |
694 |
*/ |
*/ |
695 |
static int ccs_check_environ(struct ccs_execve_entry *ee) |
static int ccs_environ(struct ccs_execve_entry *ee) |
696 |
{ |
{ |
697 |
struct ccs_request_info *r = &ee->r; |
struct ccs_request_info *r = &ee->r; |
698 |
struct linux_binprm *bprm = ee->bprm; |
struct linux_binprm *bprm = ee->bprm; |
723 |
while (offset < PAGE_SIZE) { |
while (offset < PAGE_SIZE) { |
724 |
const char *kaddr = ee->dump.data; |
const char *kaddr = ee->dump.data; |
725 |
const unsigned char c = kaddr[offset++]; |
const unsigned char c = kaddr[offset++]; |
726 |
if (c && arg_len < CCS_MAX_PATHNAME_LEN - 10) { |
if (c && arg_len < CCS_EXEC_TMPSIZE - 10) { |
727 |
if (c == '=') { |
if (c == '=') { |
728 |
arg_ptr[arg_len++] = '\0'; |
arg_ptr[arg_len++] = '\0'; |
729 |
} else if (c == '\\') { |
} else if (c == '\\') { |
743 |
} |
} |
744 |
if (c) |
if (c) |
745 |
continue; |
continue; |
746 |
if (ccs_check_env_perm(r, arg_ptr)) { |
if (ccs_env_perm(r, arg_ptr)) { |
747 |
error = -EPERM; |
error = -EPERM; |
748 |
break; |
break; |
749 |
} |
} |
811 |
static inline int ccs_root_depth(struct dentry *dentry, struct vfsmount *vfsmnt) |
static inline int ccs_root_depth(struct dentry *dentry, struct vfsmount *vfsmnt) |
812 |
{ |
{ |
813 |
int depth = 0; |
int depth = 0; |
|
/***** CRITICAL SECTION START *****/ |
|
814 |
ccs_realpath_lock(); |
ccs_realpath_lock(); |
815 |
for (;;) { |
for (;;) { |
816 |
if (dentry == vfsmnt->mnt_root || IS_ROOT(dentry)) { |
if (dentry == vfsmnt->mnt_root || IS_ROOT(dentry)) { |
825 |
depth++; |
depth++; |
826 |
} |
} |
827 |
ccs_realpath_unlock(); |
ccs_realpath_unlock(); |
|
/***** CRITICAL SECTION END *****/ |
|
828 |
return depth; |
return depth; |
829 |
} |
} |
830 |
|
|
841 |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 25) |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 25) |
842 |
struct path root; |
struct path root; |
843 |
#endif |
#endif |
|
/***** CRITICAL SECTION START *****/ |
|
844 |
read_lock(¤t->fs->lock); |
read_lock(¤t->fs->lock); |
845 |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 25) |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 25) |
846 |
root = current->fs->root; |
root = current->fs->root; |
852 |
vfsmnt = mntget(current->fs->rootmnt); |
vfsmnt = mntget(current->fs->rootmnt); |
853 |
#endif |
#endif |
854 |
read_unlock(¤t->fs->lock); |
read_unlock(¤t->fs->lock); |
|
/***** CRITICAL SECTION END *****/ |
|
855 |
depth = ccs_root_depth(dentry, vfsmnt); |
depth = ccs_root_depth(dentry, vfsmnt); |
856 |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 25) |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 25) |
857 |
path_put(&root); |
path_put(&root); |
872 |
*/ |
*/ |
873 |
static struct ccs_execve_entry *ccs_allocate_execve_entry(void) |
static struct ccs_execve_entry *ccs_allocate_execve_entry(void) |
874 |
{ |
{ |
875 |
struct ccs_execve_entry *ee = ccs_alloc(sizeof(*ee), false); |
struct ccs_execve_entry *ee = kzalloc(sizeof(*ee), GFP_KERNEL); |
876 |
if (!ee) |
if (!ee) |
877 |
return NULL; |
return NULL; |
878 |
memset(ee, 0, sizeof(*ee)); |
ee->tmp = kzalloc(CCS_EXEC_TMPSIZE, GFP_KERNEL); |
879 |
ee->program_path = ccs_alloc(CCS_MAX_PATHNAME_LEN, false); |
if (!ee->tmp) { |
880 |
ee->tmp = ccs_alloc(CCS_MAX_PATHNAME_LEN, false); |
kfree(ee); |
|
if (!ee->program_path || !ee->tmp) { |
|
|
ccs_free(ee->program_path); |
|
|
ccs_free(ee->tmp); |
|
|
ccs_free(ee); |
|
881 |
return NULL; |
return NULL; |
882 |
} |
} |
883 |
|
ee->reader_idx = ccs_read_lock(); |
884 |
/* ee->dump->data is allocated by ccs_dump_page(). */ |
/* ee->dump->data is allocated by ccs_dump_page(). */ |
885 |
ee->task = current; |
ee->task = current; |
|
/***** CRITICAL SECTION START *****/ |
|
886 |
spin_lock(&ccs_execve_list_lock); |
spin_lock(&ccs_execve_list_lock); |
887 |
list_add(&ee->list, &ccs_execve_list); |
list_add(&ee->list, &ccs_execve_list); |
888 |
spin_unlock(&ccs_execve_list_lock); |
spin_unlock(&ccs_execve_list_lock); |
|
/***** CRITICAL SECTION END *****/ |
|
889 |
return ee; |
return ee; |
890 |
} |
} |
891 |
|
|
899 |
struct task_struct *task = current; |
struct task_struct *task = current; |
900 |
struct ccs_execve_entry *ee = NULL; |
struct ccs_execve_entry *ee = NULL; |
901 |
struct ccs_execve_entry *p; |
struct ccs_execve_entry *p; |
|
/***** CRITICAL SECTION START *****/ |
|
902 |
spin_lock(&ccs_execve_list_lock); |
spin_lock(&ccs_execve_list_lock); |
903 |
list_for_each_entry(p, &ccs_execve_list, list) { |
list_for_each_entry(p, &ccs_execve_list, list) { |
904 |
if (p->task != task) |
if (p->task != task) |
907 |
break; |
break; |
908 |
} |
} |
909 |
spin_unlock(&ccs_execve_list_lock); |
spin_unlock(&ccs_execve_list_lock); |
|
/***** CRITICAL SECTION END *****/ |
|
910 |
return ee; |
return ee; |
911 |
} |
} |
912 |
|
|
919 |
{ |
{ |
920 |
if (!ee) |
if (!ee) |
921 |
return; |
return; |
|
/***** CRITICAL SECTION START *****/ |
|
922 |
spin_lock(&ccs_execve_list_lock); |
spin_lock(&ccs_execve_list_lock); |
923 |
list_del(&ee->list); |
list_del(&ee->list); |
924 |
spin_unlock(&ccs_execve_list_lock); |
spin_unlock(&ccs_execve_list_lock); |
925 |
/***** CRITICAL SECTION END *****/ |
kfree(ee->handler_path); |
926 |
ccs_free(ee->program_path); |
kfree(ee->tmp); |
|
ccs_free(ee->tmp); |
|
927 |
kfree(ee->dump.data); |
kfree(ee->dump.data); |
928 |
ccs_free(ee); |
ccs_read_unlock(ee->reader_idx); |
929 |
|
kfree(ee); |
930 |
} |
} |
931 |
|
|
932 |
/** |
/** |
1045 |
char *exe = (char *) ccs_get_exe(); |
char *exe = (char *) ccs_get_exe(); |
1046 |
if (exe) { |
if (exe) { |
1047 |
retval = copy_strings_kernel(1, &exe, bprm); |
retval = copy_strings_kernel(1, &exe, bprm); |
1048 |
ccs_free(exe); |
kfree(exe); |
1049 |
} else { |
} else { |
1050 |
exe = ee->tmp; |
exe = ee->tmp; |
1051 |
strncpy(ee->tmp, "<unknown>", CCS_EXEC_TMPSIZE - 1); |
snprintf(ee->tmp, CCS_EXEC_TMPSIZE - 1, "<unknown>"); |
1052 |
retval = copy_strings_kernel(1, &exe, bprm); |
retval = copy_strings_kernel(1, &exe, bprm); |
1053 |
} |
} |
1054 |
if (retval < 0) |
if (retval < 0) |
1059 |
/* Set argv[1] */ |
/* Set argv[1] */ |
1060 |
{ |
{ |
1061 |
char *cp = ee->tmp; |
char *cp = ee->tmp; |
1062 |
strncpy(ee->tmp, ccs_current_domain()->domainname->name, |
snprintf(ee->tmp, CCS_EXEC_TMPSIZE - 1, "%s", |
1063 |
CCS_EXEC_TMPSIZE - 1); |
ccs_current_domain()->domainname->name); |
1064 |
retval = copy_strings_kernel(1, &cp, bprm); |
retval = copy_strings_kernel(1, &cp, bprm); |
1065 |
if (retval < 0) |
if (retval < 0) |
1066 |
goto out; |
goto out; |
1070 |
/* Set argv[0] */ |
/* Set argv[0] */ |
1071 |
{ |
{ |
1072 |
int depth = ccs_get_root_depth(); |
int depth = ccs_get_root_depth(); |
1073 |
char *cp = ee->program_path; |
int len = ee->handler->total_len + 1; |
1074 |
strncpy(cp, ee->handler->name, CCS_MAX_PATHNAME_LEN - 1); |
char *cp = kmalloc(len, GFP_KERNEL); |
1075 |
|
if (!cp) { |
1076 |
|
retval = ENOMEM; |
1077 |
|
goto out; |
1078 |
|
} |
1079 |
|
ee->handler_path = cp; |
1080 |
|
memmove(cp, ee->handler->name, len); |
1081 |
ccs_unescape(cp); |
ccs_unescape(cp); |
1082 |
retval = -ENOENT; |
retval = -ENOENT; |
1083 |
if (!*cp || *cp != '/') |
if (!*cp || *cp != '/') |
1089 |
goto out; |
goto out; |
1090 |
depth--; |
depth--; |
1091 |
} |
} |
1092 |
memmove(ee->program_path, cp, strlen(cp) + 1); |
memmove(ee->handler_path, cp, strlen(cp) + 1); |
1093 |
cp = ee->program_path; |
cp = ee->handler_path; |
1094 |
retval = copy_strings_kernel(1, &cp, bprm); |
retval = copy_strings_kernel(1, &cp, bprm); |
1095 |
if (retval < 0) |
if (retval < 0) |
1096 |
goto out; |
goto out; |
1103 |
#endif |
#endif |
1104 |
|
|
1105 |
/* OK, now restart the process with execute handler program's dentry. */ |
/* OK, now restart the process with execute handler program's dentry. */ |
1106 |
filp = open_exec(ee->program_path); |
filp = open_exec(ee->handler_path); |
1107 |
if (IS_ERR(filp)) { |
if (IS_ERR(filp)) { |
1108 |
retval = PTR_ERR(filp); |
retval = PTR_ERR(filp); |
1109 |
goto out; |
goto out; |
1110 |
} |
} |
1111 |
bprm->file = filp; |
bprm->file = filp; |
1112 |
bprm->filename = ee->program_path; |
bprm->filename = ee->handler_path; |
1113 |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 5, 0) |
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 5, 0) |
1114 |
bprm->interp = bprm->filename; |
bprm->interp = bprm->filename; |
1115 |
#endif |
#endif |
1116 |
retval = prepare_binprm(bprm); |
retval = prepare_binprm(bprm); |
1117 |
if (retval < 0) |
if (retval < 0) |
1118 |
goto out; |
goto out; |
1119 |
{ |
task->ccs_flags |= CCS_DONT_SLEEP_ON_ENFORCE_ERROR; |
1120 |
/* |
retval = ccs_find_next_domain(ee); |
1121 |
* Backup ee->program_path because ccs_find_next_domain() will |
task->ccs_flags &= ~CCS_DONT_SLEEP_ON_ENFORCE_ERROR; |
|
* overwrite ee->program_path and ee->tmp. |
|
|
*/ |
|
|
const int len = strlen(ee->program_path) + 1; |
|
|
char *cp = kmalloc(len, GFP_KERNEL); |
|
|
if (!cp) { |
|
|
retval = -ENOMEM; |
|
|
goto out; |
|
|
} |
|
|
memmove(cp, ee->program_path, len); |
|
|
bprm->filename = cp; |
|
|
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 5, 0) |
|
|
bprm->interp = bprm->filename; |
|
|
#endif |
|
|
task->ccs_flags |= CCS_DONT_SLEEP_ON_ENFORCE_ERROR; |
|
|
retval = ccs_find_next_domain(ee); |
|
|
task->ccs_flags &= ~CCS_DONT_SLEEP_ON_ENFORCE_ERROR; |
|
|
/* Restore ee->program_path for search_binary_handler(). */ |
|
|
memmove(ee->program_path, cp, len); |
|
|
bprm->filename = ee->program_path; |
|
|
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 5, 0) |
|
|
bprm->interp = bprm->filename; |
|
|
#endif |
|
|
kfree(cp); |
|
|
} |
|
1122 |
out: |
out: |
1123 |
return retval; |
return retval; |
1124 |
} |
} |
1130 |
* @type: Type of execute handler. |
* @type: Type of execute handler. |
1131 |
* |
* |
1132 |
* Returns true if found, false otherwise. |
* Returns true if found, false otherwise. |
1133 |
|
* |
1134 |
|
* Caller holds ccs_read_lock(). |
1135 |
*/ |
*/ |
1136 |
static bool ccs_find_execute_handler(struct ccs_execve_entry *ee, |
static bool ccs_find_execute_handler(struct ccs_execve_entry *ee, |
1137 |
const u8 type) |
const u8 type) |
1146 |
*/ |
*/ |
1147 |
if (task->ccs_flags & CCS_TASK_IS_EXECUTE_HANDLER) |
if (task->ccs_flags & CCS_TASK_IS_EXECUTE_HANDLER) |
1148 |
return false; |
return false; |
|
/***** READER SECTION START *****/ |
|
|
down_read(&ccs_policy_lock); |
|
1149 |
list_for_each_entry(ptr, &domain->acl_info_list, list) { |
list_for_each_entry(ptr, &domain->acl_info_list, list) { |
1150 |
struct ccs_execute_handler_record *acl; |
struct ccs_execute_handler_record *acl; |
1151 |
if (ptr->type != type) |
if (ptr->type != type) |
1156 |
found = true; |
found = true; |
1157 |
break; |
break; |
1158 |
} |
} |
|
up_read(&ccs_policy_lock); |
|
|
/***** READER SECTION END *****/ |
|
1159 |
return found; |
return found; |
1160 |
} |
} |
1161 |
|
|
1174 |
struct page *page; |
struct page *page; |
1175 |
/* dump->data is released by ccs_free_execve_entry(). */ |
/* dump->data is released by ccs_free_execve_entry(). */ |
1176 |
if (!dump->data) { |
if (!dump->data) { |
1177 |
dump->data = kmalloc(PAGE_SIZE, GFP_KERNEL); |
dump->data = kzalloc(PAGE_SIZE, GFP_KERNEL); |
1178 |
if (!dump->data) |
if (!dump->data) |
1179 |
return false; |
return false; |
1180 |
} |
} |
1220 |
struct ccs_execve_entry *ee = ccs_find_execve_entry(); |
struct ccs_execve_entry *ee = ccs_find_execve_entry(); |
1221 |
struct ccs_domain_info *next_domain = NULL; |
struct ccs_domain_info *next_domain = NULL; |
1222 |
if (ee) |
if (ee) |
1223 |
next_domain = ee->r.cookie.u.domain; |
next_domain = ee->r.domain; |
1224 |
if (!next_domain) |
if (!next_domain) |
1225 |
next_domain = ccs_current_domain(); |
next_domain = ccs_current_domain(); |
1226 |
return next_domain; |
return next_domain; |
1242 |
ccs_load_policy(bprm->filename); |
ccs_load_policy(bprm->filename); |
1243 |
if (!ee) |
if (!ee) |
1244 |
return -ENOMEM; |
return -ENOMEM; |
1245 |
ccs_init_request_info(&ee->r, NULL, CCS_MAC_FOR_FILE); |
ccs_init_request_info(&ee->r, NULL, CCS_MAC_FILE_EXECUTE); |
1246 |
ee->r.ee = ee; |
ee->r.ee = ee; |
1247 |
ee->bprm = bprm; |
ee->bprm = bprm; |
1248 |
ee->r.obj = &ee->obj; |
ee->r.obj = &ee->obj; |
1249 |
ee->obj.path1_dentry = bprm->file->f_dentry; |
ee->obj.path1.dentry = bprm->file->f_dentry; |
1250 |
ee->obj.path1_vfsmnt = bprm->file->f_vfsmnt; |
ee->obj.path1.mnt = bprm->file->f_vfsmnt; |
1251 |
/* Clear manager flag. */ |
/* Clear manager flag. */ |
1252 |
task->ccs_flags &= ~CCS_TASK_IS_POLICY_MANAGER; |
task->ccs_flags &= ~CCS_TASK_IS_POLICY_MANAGER; |
1253 |
if (ccs_find_execute_handler(ee, TYPE_EXECUTE_HANDLER)) { |
if (ccs_find_execute_handler(ee, CCS_TYPE_EXECUTE_HANDLER)) { |
1254 |
retval = ccs_try_alt_exec(ee); |
retval = ccs_try_alt_exec(ee); |
1255 |
if (!retval) |
if (!retval) |
1256 |
ccs_audit_execute_handler_log(ee, true); |
ccs_audit_execute_handler_log(ee, true); |
1259 |
retval = ccs_find_next_domain(ee); |
retval = ccs_find_next_domain(ee); |
1260 |
if (retval != -EPERM) |
if (retval != -EPERM) |
1261 |
goto ok; |
goto ok; |
1262 |
if (ccs_find_execute_handler(ee, TYPE_DENIED_EXECUTE_HANDLER)) { |
if (ccs_find_execute_handler(ee, CCS_TYPE_DENIED_EXECUTE_HANDLER)) { |
1263 |
retval = ccs_try_alt_exec(ee); |
retval = ccs_try_alt_exec(ee); |
1264 |
if (!retval) |
if (!retval) |
1265 |
ccs_audit_execute_handler_log(ee, false); |
ccs_audit_execute_handler_log(ee, false); |
1267 |
ok: |
ok: |
1268 |
if (retval < 0) |
if (retval < 0) |
1269 |
goto out; |
goto out; |
1270 |
ee->r.mode = ccs_check_flags(ee->r.cookie.u.domain, CCS_MAC_FOR_ENV); |
ee->r.mode = ccs_get_mode(ee->r.profile, CCS_MAC_ENVIRON); |
1271 |
retval = ccs_check_environ(ee); |
retval = ccs_environ(ee); |
1272 |
if (retval < 0) |
if (retval < 0) |
1273 |
goto out; |
goto out; |
1274 |
task->ccs_flags |= CCS_CHECK_READ_FOR_OPEN_EXEC; |
task->ccs_flags |= CCS_CHECK_READ_FOR_OPEN_EXEC; |
1283 |
* ccs_finish_execve - Clean up execve() operation. |
* ccs_finish_execve - Clean up execve() operation. |
1284 |
* |
* |
1285 |
* @retval: Return code of an execve() operation. |
* @retval: Return code of an execve() operation. |
1286 |
|
* |
1287 |
|
* Caller holds ccs_read_lock(). |
1288 |
*/ |
*/ |
1289 |
void ccs_finish_execve(int retval) |
void ccs_finish_execve(int retval) |
1290 |
{ |
{ |
1295 |
return; |
return; |
1296 |
if (retval < 0) |
if (retval < 0) |
1297 |
goto out; |
goto out; |
|
/***** READER SECTION START *****/ |
|
|
down_read(&ccs_policy_lock); |
|
1298 |
/* Proceed to next domain if execution suceeded. */ |
/* Proceed to next domain if execution suceeded. */ |
1299 |
task->ccs_domain_info = ee->r.cookie.u.domain; |
task->ccs_domain_info = ee->r.domain; |
|
up_read(&ccs_policy_lock); |
|
|
/***** READER SECTION END *****/ |
|
1300 |
/* Mark the current process as execute handler. */ |
/* Mark the current process as execute handler. */ |
1301 |
if (ee->handler) |
if (ee->handler) |
1302 |
task->ccs_flags |= CCS_TASK_IS_EXECUTE_HANDLER; |
task->ccs_flags |= CCS_TASK_IS_EXECUTE_HANDLER; |
1304 |
else |
else |
1305 |
task->ccs_flags &= ~CCS_TASK_IS_EXECUTE_HANDLER; |
task->ccs_flags &= ~CCS_TASK_IS_EXECUTE_HANDLER; |
1306 |
out: |
out: |
|
ccs_exit_request_info(&ee->r); |
|
1307 |
ccs_free_execve_entry(ee); |
ccs_free_execve_entry(ee); |
1308 |
} |
} |
|
|
|
|
#else |
|
|
|
|
|
/** |
|
|
* ccs_start_execve - Prepare for execve() operation. |
|
|
* |
|
|
* @bprm: Pointer to "struct linux_binprm". |
|
|
* |
|
|
* Returns 0. |
|
|
*/ |
|
|
int ccs_start_execve(struct linux_binprm *bprm) |
|
|
{ |
|
|
#ifdef CONFIG_SAKURA |
|
|
/* Clear manager flag. */ |
|
|
current->ccs_flags &= ~CCS_TASK_IS_POLICY_MANAGER; |
|
|
if (!ccs_policy_loaded) |
|
|
ccs_load_policy(bprm->filename); |
|
|
#endif |
|
|
return 0; |
|
|
} |
|
|
|
|
|
/** |
|
|
* ccs_finish_execve - Clean up execve() operation. |
|
|
*/ |
|
|
void ccs_finish_execve(int retval) |
|
|
{ |
|
|
} |
|
|
|
|
|
#endif |
|